Gas concentration determination method and related device

Abstract

The invention discloses a gas concentration determination method and a related device, which are suitable for first communication equipment. Comprises: sending a first communication signal to a second communication device; a first echo signal of the first communication signal is received, the frequency of the first communication signal is f1, and f1 is used for the first gas; determining the first concentration of the first gas according to the sending power of the first communication signal and the receiving power of the first echo signal; and determining whether to send the second communication signal to the second communication equipment according to the first concentration. According to the method, gas concentration estimation is realized by using a wireless communication system, and the cost of gas concentration estimation is reduced.

Description

Gas concentration determination method and related device Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method for determining gas concentration and related devices. Background Art

[0002] Gas detection can be applied in a variety of scenarios. For example, in industrial scenarios, detecting gases as main (or by-product) products can effectively monitor production line progress. In environmental monitoring, by detecting the concentration of specific gases in the atmosphere, air quality can be monitored in real time, allowing regulators to implement more targeted air pollution prevention and control programs. In agricultural and animal husbandry scenarios, by detecting gases released by crops and livestock, the life cycle or physiological condition of crops and livestock can be monitored. Currently, gas detection requires proprietary gas detection equipment, which is bulky and expensive, making it unsuitable for large-scale deployment.

[0003] Summary of the Invention

[0004] The present application provides a gas concentration determination method and related devices, which can utilize a wireless communication system to achieve gas concentration estimation and reduce the cost of gas concentration estimation.

[0005] In a first aspect, the present application provides a method for determining gas concentration, which is applied to a first communication device and includes:

[0006] sending a first communication signal to a second communication device;

[0007] receiving a first echo signal of the first communication signal, where the frequency of the first communication signal is f1, and the frequency f1 is for a first gas;

[0008] determining a first concentration of the first gas according to the transmission power of the first communication signal and the reception power of the first echo signal;

[0009] Whether to transmit a second communication signal to the second communication device is determined based on the first density.

[0010] In a first aspect, a first communication device transmits a first communication signal to a second communication device, and the first communication device receives an echo signal of the first communication signal (i.e., a first echo signal). This allows the first communication device to determine a first concentration of a first gas based on the transmit power of the first communication signal and the receive power of the first echo signal. In other words, the wireless communication system can be used to detect the gas surrounding the communication link to estimate the gas concentration. Furthermore, whether to transmit a second communication signal can be determined based on the first concentration. If the second communication signal is transmitted, the transmit power of the second communication signal and the receive power of the second echo signal can be combined with the transmit power of the first communication signal and the receive power of the first echo signal to estimate a more accurate gas concentration. If the second communication signal is not transmitted, this can contribute to energy conservation for the first communication device.

[0011] In a possible implementation, determining whether to send a second communication signal to the second communication device according to the first concentration includes:

[0012] Determining to send a second communication signal to the second communication device according to one of the following:

[0013] When the first concentration is greater than or equal to a first concentration threshold, determining to send the second communication signal to the second communication device; or,

[0014] When the first concentration is less than the first concentration threshold and the second communication signal is not sent to the second communication device for more than a preset time period, it is determined to send the second communication signal to the second communication device.

[0015] In a possible implementation, determining whether to send a second communication signal to the second communication device according to the first concentration includes:

[0016] Determine not to send the second communication signal to the second communication device according to the following conditions:

[0017] When the first density is less than a first density threshold, it is determined not to transmit the second communication signal to the second communication device.

[0018] In a possible implementation, after determining, according to the first concentration, to send a second communication signal to the second communication device, the method further includes:

[0019] sending the first communication signal and the second communication signal to a second communication device;

[0020] receiving a first echo signal of the first communication signal and a second echo signal of the second communication signal, where the frequency of the second communication signal is f2, the frequency f2 is for the first gas, and an absorption coefficient of the first gas at the frequency f1 is greater than an absorption coefficient of the first gas at the frequency f2;

[0021] A second concentration of the first gas is determined based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, and the reception power of the second echo signal.

[0022] In a possible implementation, after sending the first communication signal and the second communication signal to the second communication device, the method further includes:

[0023] When the first concentration is less than the first concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time; or

[0024] When the second concentration is less than the first concentration threshold, the sending of the second communication signal to the second communication device is stopped or the number of times the second communication signal is sent to the second communication device per unit time is reduced.

[0025] In a possible implementation, after sending the first communication signal and the second communication signal to the second communication device, the method further includes:

[0026] When the concentration difference between the first concentration and the second concentration is less than or equal to a second concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0027] In a possible implementation, the number of times the first communication signal is sent within a unit time is greater than or equal to the number of times the second communication signal is sent within the unit time.

[0028] In a possible implementation, determining the first concentration of the first gas according to the transmit power of the first communication signal and the receive power of the first echo signal includes:

[0029] The first concentration of the first gas is determined based on the transmission power of the first communication signal, the reception power of the first echo signal, the distance between the first communication device and the second communication device, and the absorption coefficient of the first gas at the frequency f1.

[0030] In a possible implementation, the first concentration satisfies:

[0031]

[0032] Among them, the M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal.

[0033] In a possible implementation, determining the second concentration of the first gas based on the transmit power of the first communication signal, the receive power of the first echo signal, the transmit power of the second communication signal, and the receive power of the second echo signal includes:

[0034] Determine a second concentration of the first gas on the communication link between the second communication device and the second communication device based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, the reception power of the second echo signal, the distance between the first communication device and the second communication device, the absorption coefficient of the first gas at the frequency f1, and the absorption coefficient of the first gas at the frequency f2.

[0035] In one possible implementation, the second concentration satisfies:

[0036]

[0037] Among them, the M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second echo signal.

[0038] In a possible implementation, both f1 and f2 belong to licensed frequency bands, or f1 belongs to a licensed frequency band and f2 belongs to an unlicensed frequency band.

[0039] In a second aspect, the present application provides a method for determining gas concentration, which is applied to a first communication device and includes:

[0040] Sending a first communication signal to a second communication device, where the frequency of the first communication signal is f1, the f1 is for a first gas, and the transmission power and the reception power of the first communication signal are used to determine a first concentration of the first gas;

[0041] Determine whether to send a second communication signal to the second communication device based on the first indication information from the second communication device, where the frequency of the second communication signal is f2, and f2 is used for the first gas, and the absorption coefficient of the first gas at the frequency of f1 is greater than the absorption coefficient of the first gas at the frequency of f2.

[0042] In a second aspect, a first communication device transmits a first communication signal to a second communication device. In response, the second communication device receives the first communication signal from the first communication device, enabling the second communication device to determine a first concentration of a first gas based on the transmit power and receive power of the first communication signal. In other words, the wireless communication system can be used to detect the gas surrounding the communication link between the first communication device and the second communication device to estimate the gas concentration. Furthermore, the first communication device can determine whether to transmit a second communication signal based on first indication information from the second communication device. If the second communication signal is transmitted, the second communication device can combine the transmit power and receive power of the second communication signal with the transmit power and receive power of the first communication signal to estimate a more accurate gas concentration. If the second communication signal is not transmitted, this can save energy for the first communication device.

[0043] In a possible implementation, the first indication information is used to instruct the first communication device to send the second communication signal to the second communication device.

[0044] In a possible implementation, the first indication information includes the first concentration.

[0045] In a possible implementation, after determining, according to the first indication information from the second communication device, to send the second communication signal to the second communication device, the method further includes:

[0046] The first communication signal and the second communication signal are sent to the second communication device.

[0047] In a possible implementation, the number of times the first communication signal is sent within a unit time is greater than or equal to the number of times the second communication signal is sent within the unit time.

[0048] In a possible implementation, after sending the first communication signal and the second communication signal to the second communication device, the method further includes:

[0049] According to the second instruction information from the second communication device, it is determined to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0050] In a possible implementation, the second indication information is used to instruct to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0051] In a possible implementation, the second indication information includes the first concentration and / or the second concentration of the first gas, where the second concentration is determined based on the transmit power and receive power of the first communication signal, and the transmit power and receive power of the second communication signal.

[0052] In a possible implementation, both f1 and f2 belong to licensed frequency bands, or f1 belongs to a licensed frequency band and f2 belongs to an unlicensed frequency band.

[0053] In a third aspect, the present application provides a method for determining gas concentration, which is applied to a second communication device, and the method includes:

[0054] receiving a first communication signal from the first communication device, wherein the frequency of the first communication signal is f1, and the frequency f1 is for a first gas;

[0055] determining a first concentration of the first gas according to the received power and the transmitted power of the first communication signal;

[0056] determining whether to send first indication information to the first communication device according to the first concentration, where the first indication information is used to determine whether the first communication device sends the second communication signal to the second communication device; or

[0057] First indication information is sent to the first communication device, where the first indication information is used to determine whether the first communication device sends the second communication signal to the second communication device, and the first indication information includes the first concentration.

[0058] In a possible implementation, determining whether to send first indication information to the first communication device according to the first concentration includes:

[0059] Determining to send the first indication information to the first communication device according to one of the following:

[0060] When the first concentration is greater than or equal to a first concentration threshold, determining to send the first indication information to the first communication device; or,

[0061] When the first concentration is less than the first concentration threshold and the first indication information is not sent to the first communication device for more than a preset time period, it is determined to send the first indication information to the first communication device.

[0062] In a possible implementation, determining whether to send first indication information to the first communication device according to the first concentration includes:

[0063] Determine not to send the first indication information to the first communication device according to the following conditions:

[0064] When the first concentration is less than a first concentration threshold, it is determined not to send the first indication information to the first communication device.

[0065] In a possible implementation, the first indication information is used to determine that the first communication device sends the second communication signal to the second communication device;

[0066] After determining, based on the first concentration, to send the first indication information to the second communication device, the method further includes:

[0067] receiving the first communication signal and the second communication signal from the first communication device;

[0068] A second concentration of the first gas is determined based on the transmission power and the reception power of the first communication signal and the transmission power and the reception power of the second communication signal.

[0069] In a possible implementation, after receiving the first communication signal and the second communication signal from the first communication device, the method further includes:

[0070] When the first concentration is less than the first concentration threshold, second indication information is sent to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time; or

[0071] When the second concentration is less than the first concentration threshold, second indication information is sent to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0072] In a possible implementation, after receiving the first communication signal and the second communication signal from the first communication device, the method further includes:

[0073] When the concentration difference between the first concentration and the second concentration is less than or equal to a second concentration threshold, second indication information is sent to the first communication device, and the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0074] In a possible implementation, after receiving the first communication signal and the second communication signal from the first communication device, the method further includes:

[0075] Second indication information is sent to the first communication device, where the second indication information includes the first concentration and / or the second concentration.

[0076] In a possible implementation, determining the first concentration of the first gas according to the received power and the transmitted power of the first communication signal includes:

[0077] The first concentration of the first gas is determined according to the transmission power of the first communication signal, the reception power of the first communication signal, the distance between the second communication device and the first communication device, and the absorption coefficient of the first gas at the frequency f1.

[0078] In a possible implementation, the first concentration satisfies:

[0079]

[0080] Among them, the M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the second communication device and the first communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal.

[0081] In a possible implementation, determining the second concentration of the first gas based on the transmit power and receive power of the first communication signal and the transmit power and receive power of the second communication signal includes:

[0082] Determine a second concentration of the first gas on the communication link between the first communication device and the first communication device based on the transmission power of the first communication signal, the reception power of the first communication signal, the transmission power of the second communication signal, the reception power of the second communication signal, the distance between the second communication device and the first communication device, the absorption coefficient of the first gas at the frequency f1, and the absorption coefficient of the first gas at the frequency f2.

[0083] In one possible implementation, the second concentration satisfies:

[0084]

[0085] Among them, the M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the second communication device and the first communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second communication signal.

[0086] In a possible implementation, both f1 and f2 belong to licensed frequency bands, or f1 belongs to a licensed frequency band and f2 belongs to an unlicensed frequency band.

[0087] In a fourth aspect, the present application provides a gas concentration determination device, which is a first communication device and includes:

[0088] a transceiver unit, configured to send a first communication signal to a second communication device;

[0089] The transceiver unit is configured to receive a first echo signal of the first communication signal, wherein the frequency of the first communication signal is f1, and the frequency f1 is for the first gas;

[0090] a processing unit, configured to determine a first concentration of the first gas according to a transmission power of the first communication signal and a reception power of the first echo signal;

[0091] The processing unit is configured to determine whether to send a second communication signal to the second communication device according to the first concentration.

[0092] In a possible implementation, when determining whether to send the second communication signal to the second communication device according to the first concentration, the processing unit is configured to:

[0093] Determining to send a second communication signal to the second communication device according to one of the following:

[0094] When the first concentration is greater than or equal to a first concentration threshold, determining to send the second communication signal to the second communication device; or,

[0095] When the first concentration is less than the first concentration threshold and the second communication signal is not sent to the second communication device for more than a preset time period, it is determined to send the second communication signal to the second communication device.

[0096] In a possible implementation, when determining whether to send the second communication signal to the second communication device according to the first concentration, the processing unit is configured to:

[0097] Determine not to send the second communication signal to the second communication device according to the following conditions:

[0098] When the first density is less than a first density threshold, it is determined not to transmit the second communication signal to the second communication device.

[0099] In a possible implementation, the transceiver unit is configured to send the first communication signal and the second communication signal to a second communication device;

[0100] The transceiver unit is configured to receive a first echo signal of the first communication signal and a second echo signal of the second communication signal, wherein the frequency of the second communication signal is f2, the frequency f2 is used for the first gas, and the absorption coefficient of the first gas at the frequency f1 is greater than the absorption coefficient of the first gas at the frequency f2;

[0101] The processing unit is configured to determine the second concentration of the first gas based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, and the reception power of the second echo signal.

[0102] In a possible implementation, the processing unit is further configured to:

[0103] When the first concentration is less than the first concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time; or

[0104] When the second concentration is less than the first concentration threshold, the sending of the second communication signal to the second communication device is stopped or the number of times the second communication signal is sent to the second communication device per unit time is reduced.

[0105] In a possible implementation, the processing unit is further configured to:

[0106] When the concentration difference between the first concentration and the second concentration is less than or equal to a second concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0107] In a possible implementation, the number of times the first communication signal is sent within a unit time is greater than or equal to the number of times the second communication signal is sent within the unit time.

[0108] In a possible implementation, when determining the first concentration of the first gas based on the transmit power of the first communication signal and the receive power of the first echo signal, the processing unit is configured to:

[0109] The first concentration of the first gas is determined based on the transmission power of the first communication signal, the reception power of the first echo signal, the distance between the first communication device and the second communication device, and the absorption coefficient of the first gas at the frequency f1.

[0110] In a possible implementation, the first concentration satisfies:

[0111]

[0112] Among them, the M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal.

[0113] In a possible implementation, when determining the second concentration of the first gas based on the transmit power of the first communication signal, the receive power of the first echo signal, the transmit power of the second communication signal, and the receive power of the second echo signal, the processing unit is configured to:

[0114] Determine a second concentration of the first gas on the communication link between the second communication device and the second communication device based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, the reception power of the second echo signal, the distance between the first communication device and the second communication device, the absorption coefficient of the first gas at the frequency f1, and the absorption coefficient of the first gas at the frequency f2.

[0115] In one possible implementation, the second concentration satisfies:

[0116]

[0117] Among them, the M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second echo signal.

[0118] In a possible implementation, both f1 and f2 belong to licensed frequency bands, or f1 belongs to a licensed frequency band and f2 belongs to an unlicensed frequency band.

[0119] In a fifth aspect, the present application provides a gas concentration determination device, which is a first communication device and includes:

[0120] a transceiver unit, configured to send a first communication signal to a second communication device, wherein the frequency of the first communication signal is f1, the f1 being for a first gas, and the transmit power and receive power of the first communication signal being used to determine a first concentration of the first gas;

[0121] A processing unit is used to determine whether to send a second communication signal to the second communication device based on the first indication information from the second communication device, where the frequency of the second communication signal is f2, and the f2 is used for the first gas, and the absorption coefficient of the first gas at the frequency of f1 is greater than the absorption coefficient of the first gas at the frequency of f2.

[0122] In a possible implementation, the first indication information is used to instruct the first communication device to send the second communication signal to the second communication device.

[0123] In a possible implementation, the first indication information includes the first concentration.

[0124] In a possible implementation, the processing unit is further configured to:

[0125] The first communication signal and the second communication signal are sent to the second communication device.

[0126] In a possible implementation, the number of times the first communication signal is sent within a unit time is greater than or equal to the number of times the second communication signal is sent within the unit time.

[0127] In a possible implementation, the processing unit is further configured to:

[0128] According to the second instruction information from the second communication device, it is determined to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0129] In a possible implementation, the second indication information is used to instruct to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0130] In a possible implementation, the second indication information includes the first concentration and / or the second concentration of the first gas, where the second concentration is determined based on the transmit power and receive power of the first communication signal, and the transmit power and receive power of the second communication signal.

[0131] In a possible implementation, both f1 and f2 belong to licensed frequency bands, or f1 belongs to a licensed frequency band and f2 belongs to an unlicensed frequency band.

[0132] In a sixth aspect, the present application provides a gas concentration determination device, which is a second communication device and includes:

[0133] a transceiver unit, configured to receive a first communication signal from the first communication device, wherein the frequency of the first communication signal is f1, and the frequency f1 is for a first gas;

[0134] a processing unit, configured to determine a first concentration of the first gas based on a received power and a transmitted power of the first communication signal;

[0135] the processing unit is configured to determine, based on the first concentration, whether to send first indication information to the first communication device, the first indication information being used to determine whether the first communication device sends the second communication signal to the second communication device; or

[0136] The transceiver unit is configured to send first indication information to the first communication device, where the first indication information is used to determine whether the first communication device sends the second communication signal to the second communication device, and the first indication information includes the first concentration.

[0137] In a possible implementation, when determining, according to the first concentration, whether to send first indication information to the first communication device, the processing unit is configured to:

[0138] Determining to send the first indication information to the first communication device according to one of the following:

[0139] When the first concentration is greater than or equal to a first concentration threshold, determining to send the first indication information to the first communication device; or,

[0140] When the first concentration is less than the first concentration threshold and the first indication information is not sent to the first communication device for more than a preset time period, it is determined to send the first indication information to the first communication device.

[0141] In a possible implementation, when determining, according to the first concentration, whether to send first indication information to the first communication device, the processing unit is configured to:

[0142] Determine not to send the first indication information to the first communication device according to the following conditions:

[0143] When the first concentration is less than a first concentration threshold, it is determined not to send the first indication information to the first communication device.

[0144] In a possible implementation, the first indication information is used to determine that the first communication device sends the second communication signal to the second communication device;

[0145] The transceiver unit is further configured to receive the first communication signal and the second communication signal from the first communication device;

[0146] The processing unit is further configured to determine a second concentration of the first gas based on the transmission power and the reception power of the first communication signal and the transmission power and the reception power of the second communication signal.

[0147] In a possible implementation, the processing unit is further configured to:

[0148] When the first concentration is less than the first concentration threshold, second indication information is sent to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time; or

[0149] When the second concentration is less than the first concentration threshold, second indication information is sent to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0150] In a possible implementation, the processing unit is further configured to:

[0151] When the concentration difference between the first concentration and the second concentration is less than or equal to a second concentration threshold, second indication information is sent to the first communication device, and the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0152] In a possible implementation, the processing unit is further configured to:

[0153] Second indication information is sent to the first communication device, where the second indication information includes the first concentration and / or the second concentration.

[0154] In a possible implementation, when determining the first concentration of the first gas based on the received power and the transmitted power of the first communication signal, the processing unit is configured to:

[0155] The first concentration of the first gas is determined according to the transmission power of the first communication signal, the reception power of the first communication signal, the distance between the second communication device and the first communication device, and the absorption coefficient of the first gas at the frequency f1.

[0156] In a possible implementation, the first concentration satisfies:

[0157]

[0158] Among them, the M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the second communication device and the first communication device, P A0 (f1) represents the transmission power of the first communication signal, PA (f1) represents the received power of the first communication signal.

[0159] In a possible implementation, when determining the second concentration of the first gas based on the transmit power and receive power of the first communication signal and the transmit power and receive power of the second communication signal, the processing unit is configured to:

[0160] Determine a second concentration of the first gas on the communication link between the first communication device and the first communication device based on the transmission power of the first communication signal, the reception power of the first communication signal, the transmission power of the second communication signal, the reception power of the second communication signal, the distance between the second communication device and the first communication device, the absorption coefficient of the first gas at the frequency f1, and the absorption coefficient of the first gas at the frequency f2.

[0161] In one possible implementation, the second concentration satisfies:

[0162]

[0163] Among them, the M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the second communication device and the first communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second communication signal.

[0164] In a possible implementation, both f1 and f2 belong to licensed frequency bands, or f1 belongs to a licensed frequency band and f2 belongs to an unlicensed frequency band.

[0165] In a seventh aspect, the present application provides a communication device, which may be a first communication device, or a device in the first communication device, or a device that can be used in conjunction with the first communication device. For example, the first communication device may be a terminal device or an access network device. The communication device may also be a chip system. The communication device may execute the method described in the first or second aspect. The functions of the communication device may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the methods and beneficial effects described in the first or second aspect above, and repetitive parts will not be repeated.

[0166] In an eighth aspect, the present application provides a communication device, which may be a second communication device, or a device in a second communication device, or a device that can be used in conjunction with the second communication device. For example, the second communication device may be a terminal device or an access network device. The communication device may also be a chip system. The communication device may execute the method described in the third aspect. The functions of the communication device may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the method and beneficial effects described in the third aspect above, and the repeated parts will not be repeated.

[0167] In the ninth aspect, the present application provides a communication device, which may be a first communication device, and the communication device includes a processor and a transceiver, and the processor and the transceiver are used to execute a computer program or instruction stored in at least one memory so that the device implements a method as in any one of the first aspect or the second aspect.

[0168] For another example, the communication device includes: a processor, a transceiver, and a memory, wherein the processor, the transceiver, and the memory are coupled, and the processor and the transceiver are used to implement the method of any one of the first aspect or the second aspect.

[0169] In the tenth aspect, the present application provides a communication device, which may be a second communication device, and the communication device includes a processor and a transceiver, and the processor and the transceiver are used to execute a computer program or instruction stored in at least one memory so that the device implements a method as any one of the third aspects.

[0170] For another example, the communication device includes a processor, a transceiver, and a memory, wherein the processor, the transceiver, and the memory are coupled, and the processor and the transceiver are used to implement any one of the methods in the third aspect.

[0171] In the eleventh aspect, the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed by a computer, the method of any one of the first to third aspects is implemented.

[0172] In a twelfth aspect, the present application provides a computer program product comprising instructions, wherein the computer program product comprises computer program code, which, when the computer program code is run on a computer, implements the method of any one of the first to third aspects.

[0173] In a thirteenth aspect, a chip system is provided, comprising a processor and possibly a memory, for implementing any of the aforementioned aspects 1 through 3 and any possible design thereof. The chip system may be comprised solely of a chip, or may include a chip and other discrete components.

[0174] In the fourteenth aspect, a communication system is provided, which includes the first communication device described in the seventh or ninth aspect above, and the second communication device described in the eighth or tenth aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0175] FIG1 is a schematic diagram of a network architecture of a communication system;

[0176] FIG2 is a flow chart of a method for determining gas concentration according to an embodiment of the present application;

[0177] FIG3 is another flow chart of a method for determining gas concentration according to an embodiment of the present application;

[0178] FIG4 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0179] FIG5 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0180] FIG6 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0181] FIG7 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0182] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0183] In this application, unless otherwise specified, " / " means "or." For example, A / B can mean either A or B. "And / or" in this document simply describes an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. A and B can each be single or multiple. Furthermore, "at least one" means one or more, and "multiple" means two or more. "One or more of the following:...", "at least one of...", and similar expressions refer to any combination of the listed items. For example, "one or more of the following: A, B, C" can mean: A exists alone, B exists alone, C exists alone, A and B exist simultaneously, B and C exist simultaneously, A and C exist simultaneously, or A, B, and C exist simultaneously. A, B, and C can each be single or multiple. The words "first" and "second" do not limit the quantity or order of execution, and the words "first" and "second" do not necessarily specify differences.

[0184] In this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0185] It should be understood that references to "embodiments" throughout this specification mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present application. Therefore, various embodiments throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0186] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as long term evolution (LTE) systems, wireless fidelity (WiFi) systems, world-wide interoperability for microwave access (WiMAX) communication systems, fifth generation (5G) systems or new radio (NR) systems, and future communication systems, etc., without limitation.

[0187] Please refer to Figure 1, which is a schematic diagram of the network architecture of a communication system. As shown in Figure 1, the communication system may include one or more network devices 10 (two are shown in Figure 1) and one or more terminal devices 20 that communicate with each network device 10. Figure 1 is merely a schematic diagram and does not limit the applicable scenarios of the technical solutions provided in this application.

[0188] The terminal device includes a device that provides voice and / or data connectivity to a user, and may include, for example, a handheld device with wireless connection capabilities, or a processing device connected to a wireless modem. The terminal device may communicate with the core network via a radio access network, and may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (D2D) terminal equipment, vehicle-to-everything (V2X) terminal equipment, machine-to-machine / machine-type communications (M2M / MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user equipment, etc. For example, it may include a mobile phone (also known as a "cellular" phone), a computer with a mobile terminal device, a portable, pocket-sized, handheld, or computer-built-in mobile device, etc. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices; it may also include restricted devices, such as devices with low power consumption, or devices with limited storage capacity, or devices with limited computing power, etc.

[0189] The network device may be a core network device, such as a core network (CN) device, or an access network device, such as a radio access network (RAN) device, or may include both a core network device and an access network device.

[0190] Generally speaking, core network equipment is used to implement functions such as mobility management, data processing, session management, policy and billing. The names of the devices that implement core network functions in systems with different access technologies may vary, and this application does not limit this. Taking the 5G network as an example, the logical network elements of 5GC include: access and mobility management function (AMF), session management function (SMF), or user plane function (UPF).

[0191] In an embodiment of the present application, the device for realizing the function of the core network device may be the core network device, or it may be a device that can support the core network device to realize the function, such as a chip system or a combination of devices and components that can realize the function of the core network device. The device can be installed in the core network device.

[0192] Generally speaking, access network equipment may include the next-generation base station (gNB), evolved node B (eNB), next-generation evolved node B (ng-eNB), wireless backhaul equipment, radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home evolved node B (HeNB) or home node B (HNB)), baseband unit (BBU), transmission and receiving point (TRP), transmitting point (TP), mobile switching center, etc. in the 5G communication system, without limitation.

[0193] The access network device may also include one or more centralized units (CU), one or more distributed units (DU), or one or more CUs and one or more DUs. Exemplarily, the functions of the CU may be implemented by one entity or different entities. For example, the functions of the CU are further divided, that is, the control plane and the user plane are separated and implemented through different entities, namely the control plane CU entity (i.e., CU-CP entity) and the user plane CU entity (i.e., CU-UP entity). The CU-CP entity and the CU-UP entity can be coupled with the DU to jointly complete the functions of the access network device. In this way, some functions of the wireless access network device can be implemented through multiple network function entities. These network function entities can be network elements in hardware devices, or they can be software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform).

[0194] In the embodiments of the present application, the device for implementing the functions of the access network device may be the access network device itself, or may be a device capable of supporting the access network device in implementing the functions, such as a chip system or a combination of devices or components capable of implementing the functions of the access network device, which may be installed in the access network device. In the embodiments of the present application, the chip system may be composed of a chip or may include a chip and other discrete devices.

[0195] It can be understood that the scenario of the embodiment of the present application can be based on the background of communication signal transmission. Optionally, the embodiment of the present application is applicable to scenarios of both homogeneous networks and heterogeneous networks, and there is no restriction on the transmission points. It can be multi-point coordinated transmission between macro base stations and macro base stations, micro base stations and micro base stations, and macro base stations and micro base stations, and is applicable to frequency division duplex FDD (frequency division duplex) / TDD systems. Optionally, the embodiment of the present application is applicable to low-frequency scenarios (sub 6G) and high-frequency scenarios (above 6G). Optionally, the embodiment of the present application is applicable to 4G, 5G or future mobile communication systems. Optionally, the embodiment of the present application is applicable to Single-TRP or Multi-TRP scenarios, and any derivative scenarios thereof. Optionally, the present application is also applicable to NR uplink transmission, etc.

[0196] It should be noted that the first communication device described in the embodiment of the present application can be a network device, or it can also be a terminal device, and the second communication device can be a network device, or it can also be a terminal device, etc., which is determined according to the actual application scenario and is not limited here. For example, the network architecture applicable to this application may include the following 6 types:

[0197] ① Network device 1 sends a communication signal, and network device 1 receives an echo signal of the communication signal it sent.

[0198] ② The terminal device 1 sends a communication signal, and the terminal device 1 receives an echo signal of the communication signal it sent.

[0199] ③ Network device 1 sends a communication signal, and network device 2 receives the communication signal.

[0200] ④ Terminal device 1 sends a communication signal, and terminal device 2 receives the communication signal.

[0201] ⑤ Network device 1 sends a communication signal, and terminal device 1 receives the communication signal.

[0202] ⑥ Terminal device 1 sends a communication signal, and network device 1 receives the communication signal.

[0203] Gas detection is in demand across multiple application scenarios. For example, in industrial settings, toxic, corrosive, and explosive gases are of concern. Monitoring these gases as primary (or secondary) products can effectively monitor production line progress. In environmental monitoring, monitoring the concentration of specific gases in the atmosphere allows for real-time monitoring of air quality, enabling environmental regulators to implement more targeted air pollution prevention and control programs. In agriculture and animal husbandry, gases released by crops and livestock represent their life cycles or physiological conditions. Monitoring these gases allows operators to promptly identify growth issues, allowing for early adjustments to care measures and ultimately increasing production value. In line with the national "dual carbon" strategy, the gas detection function of communication systems can be used to monitor the large amounts of greenhouse gases released by industries such as transportation, agriculture, and energy, providing data support for calculating various carbon neutrality indicators. In daily life, real-time detection of toxic gases, such as carbon monoxide poisoning, a common winter occurrence, can reduce losses caused by safety accidents. Real-time monitoring of explosive gas leaks can help prevent and control fires.

[0204] However, current gas detection requires proprietary gas detection equipment. Due to cost constraints, the density of gas detection instruments is relatively low, insufficient to provide a data source with sufficient spatial and temporal density. Furthermore, in specialized scenarios (such as homes or hazardous workplaces), the market is more sensitive to gas detection device simplicity, portability (wearable), and cost-effectiveness. However, current proprietary gas detection equipment falls short of meeting these requirements in terms of cost-effectiveness and operability. The 6G vision proposes Integrated Sensing and Communication (ISAC) technology, which aims to integrate communication and perception functions in future communication systems, achieving mutual enhancement through integrated waveform and device design. Potential application scenarios for ISAC sensing capabilities outlined in the 6G vision include air quality monitoring, personal health monitoring, gesture recognition, and security and disaster prevention. Gas detection is a potential function of 6G base stations or terminal equipment, necessitating a fundamental, universal design tailored to the functional characteristics and application scenarios of gas detection in wireless communication systems.

[0205] It should be noted that, in the embodiment of the present application, the concentration estimated based only on the first communication signal is described as the first concentration; the concentration estimated based on the first communication signal and the second communication signal is described as the second concentration; and the concentration estimated based only on the second communication signal is described as the third concentration.

[0206] It should be noted that, in the embodiment of the present application, sending the first communication signal can be understood as turning on module A of the first communication device to send the first communication signal, and sending the second communication signal can be understood as turning on module B of the first communication device to send the second communication signal.

[0207] It is understood that when module A and module B are turned on simultaneously, the number of times module A transmits the first communication signal per unit time can be equal to the number of times module B transmits the second communication signal per unit time. That is, the frequency of module A transmitting the first communication signal is equal to the frequency of module B transmitting the second communication signal, indicating that modules A and B transmit signals synchronously. Here, the unit time can be determined based on the actual scenario. For example, the unit time can be 5 minutes, 15 minutes, or 1 hour, etc., and is not limited here.

[0208] Optionally, when module A and module B are turned on at the same time, the number of times module A sends the first communication signal per unit time may also be greater than the number of times module B sends the second communication signal per unit time, that is, module A and module B do not send signals synchronously, and the frequency of module A sending the first communication signal is greater than the frequency of module B sending the second communication signal. The specific frequency is determined based on the actual scenario and is not limited here.

[0209] It should be noted that, in the embodiment of the present application, when estimating the concentration of the first gas, the module for sending the first communication signal (e.g., module A) can be in a normally open state and work continuously. The module for sending the second communication signal (e.g., module B) can determine whether to turn it on according to actual conditions, and whether to work continuously or intermittently after turning it on. Here, when module A and module B work continuously, it can be understood that module A and module B send signals synchronously. When module A works continuously and module B works intermittently, it can be understood that module A and module B do not send signals synchronously, and the sending frequency of module A sending the first communication signal is greater than the sending frequency of module B sending the second communication signal.

[0210] It should be noted that f1 and f2 in the embodiments of the present application both belong to authorized frequency bands, or f1 belongs to the authorized frequency band and f2 belongs to the unauthorized frequency band. Here, the authorized frequency band refers to the frequency band that has been allocated to the operator where the cellular network is located and is only used for communication and will not be occupied by other purposes. The unauthorized frequency band refers to the frequency band that has not been allocated to the operator where the cellular network is located. Generally speaking, there are two situations in which unauthorized frequency bands are divided. The first is that they are occupied by other purposes and are not allowed to be used for communication purposes. The second is that they can be used for communication and used together with other purposes. In this application, if f2 belongs to an unauthorized frequency band, then f2 belongs to the second situation.

[0211] It should be noted that the concentration of the gas described in the embodiments of the present application (e.g., the first concentration) can be understood as gas mass concentration or gas volume concentration. Gas mass concentration is the mass number of a certain gas molecule in a unit volume, and the unit is milligrams per cubic meter (mg / m3) or g / m3. Gas volume concentration refers to the volume number of a certain gas molecule in a unit volume, or the volume percentage of the measured gas in a certain volume of gas sample, and the unit is %, one part per million (ppm), ppb (one billionth) or ppt (one trillionth), etc. For example, 2ppm methane means that two molecules out of every one million gas molecules are methane. Optionally, the concentration of the gas (e.g., the first concentration) can also be understood as the average value of the gas mass concentration or gas volume concentration per unit time, where the unit time can be 5 minutes, a quarter of an hour, or an hour, etc., which can be determined according to the application scenario and is not limited here. It is understandable that the calculation of the gas concentration in the present application is continuous, that is, the gas concentration value is continuously updated, for example, updated once per unit time, etc., which is not limited here.

[0212] The following is a detailed description of the gas concentration determination method and communication device provided by this application:

[0213] FIG2 is a flow chart of a method for determining gas concentration provided in an embodiment of the present application. It should be noted that the method for determining gas concentration provided in FIG2 is applicable to the above-mentioned system architecture ① and system architecture ②. As shown in FIG2 , the method for determining gas concentration includes the following steps S201 to S204:

[0214] S201. A first communication device sends a first communication signal to a second communication device.

[0215] Here, the frequency of the first communication signal is f1, which is used for / corresponds to the first gas. It is understood that the types of gases that a wireless communication system can monitor depend on the frequency band allocated by the local operator. Generally speaking, different gases absorb signals of different frequency bands / frequencies to varying degrees. Generally speaking, the degree of a gas's absorption of a signal of a certain frequency can be measured by the absorption coefficient. Generally speaking, for a particular gas, the larger the absorption coefficient at a certain frequency, the stronger the gas's absorption of that frequency. The absorption coefficient can be measured experimentally.

[0216] In one implementation, the first communication device sending the first communication signal to the second communication device can be understood as: the first communication device sending the first communication signal to the second communication device through module A.

[0217] S202. The first communication device receives a first echo signal of a first communication signal.

[0218] Generally speaking, the first communication signal sent by the first communication device can be absorbed by the gas in the surrounding environment (such as the first gas) and reflected back to the first communication device through other devices or objects in the surrounding environment. That is, the first communication device can receive the reflected signal of the first communication signal. For the convenience of description, this application describes the reflected signal as a first echo signal.

[0219] In one implementation, the first communication device receiving the first echo signal of the first communication signal can be understood as: the first communication device receiving the first echo signal through module A.

[0220] S203: The first communication device determines a first concentration of the first gas according to the transmission power of the first communication signal and the reception power of the first echo signal.

[0221] In some feasible implementations, the first communication device may determine the first concentration of the first gas based on the transmit power of the first communication signal, the receive power of the first echo signal, the distance between the first communication device and the second communication device, and the absorption coefficient of the first gas at frequency f1. For example, the first concentration satisfies:

[0222]

[0223] Among them, M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal.

[0224] S204: The first communication device determines whether to send a second communication signal to the second communication device according to the first density.

[0225] In some feasible implementations, the first communication device may determine whether to send the second communication signal to the second communication device based on the first concentration. When the first communication device determines to send the second communication signal to the second communication device based on the first concentration, the first communication device may specifically send the second communication signal to the second communication device through module B.

[0226] The first communication device may determine to send the second communication signal to the second communication device according to one of the following:

[0227] 1. When the first concentration is greater than or equal to a first concentration threshold, determine to send a second communication signal to the second communication device; or

[0228] 2. When the first concentration is less than the first concentration threshold and the second communication signal has not been sent to the second communication device for a predetermined period of time, determine to send the second communication signal to the second communication device. In other words, if module B has been in the off state and has not received an on command for a predetermined period of time since the last time module B was off, module B will automatically turn on and send and receive signals synchronously with module A.

[0229] Optionally, the first communication device may determine not to send the second communication signal to the second communication device according to one of the following: when the first concentration is less than a first concentration threshold, the first communication device determines not to send the second communication signal to the second communication device.

[0230] It should be noted that when determining to send the second communication signal to the second communication device based on the first concentration, the first communication device may send the first communication signal and the second communication signal to the second communication device, and receive the first echo signal of the first communication signal and the second echo signal of the second communication signal. Here, the first communication device sending the first communication signal and the second communication signal to the second communication device can be understood as the first communication device sending the first communication signal to the second communication device via module A, and sending the second communication signal to the second communication device via module B. The number of times module A sends the first communication signal per unit time is equal to the number of times module B sends the second communication signal per unit time. Accordingly, the first communication device receiving the first echo signal of the first communication signal and the second echo signal of the second communication signal can be understood as the first communication device receiving the first echo signal via module A, and receiving the second echo signal via module B.

[0231] The frequency of the second communication signal is f2, f2 is used for the first gas, and the absorption coefficient of the first gas at frequency f1 is greater than the absorption coefficient of the first gas at frequency f2. That is, the attenuation degree of the first communication signal at frequency f1 is more obvious than the attenuation degree of the second communication signal at frequency f2, and the sensitivity is higher. Further, the first communication device can determine the second concentration of the first gas based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, and the reception power of the second echo signal. Exemplarily, determining the second concentration of the first gas based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, and the reception power of the second echo signal can be understood as: the first communication device determines the second concentration of the first gas on the communication link between the first communication device and the second communication device based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, the reception power of the second echo signal, the distance between the first communication device and the second communication device, the absorption coefficient of the first gas at frequency f1, and the absorption coefficient of the first gas at frequency f2. Exemplarily, the second concentration satisfies:

[0232]

[0233] Among them, M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal, P B0(f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second echo signal.

[0234] Optionally, when the first communication device transmits the second communication signal, the first communication device may further determine a third concentration of the first gas based on the transmit power of the second communication signal and the receive power of the second echo signal. Exemplarily, the third concentration of the first gas may be determined based on the transmit power of the second communication signal, the receive power of the second echo signal, the distance between the first communication device and the second communication device, and the absorption coefficient of the first gas at frequency f2. Exemplarily, the third concentration satisfies:

[0235]

[0236] Among them, M B represents the third concentration, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the first communication device and the second communication device, P B0 (f2) represents the transmission power of the second communication signal, P B (f2) represents the received power of the second echo signal.

[0237] Generally speaking, under the same gas environment, the concentration (for example, the second concentration M) calculated based on two communication signals with different frequencies (for example, f1 and f2) in the same unit time is AB ) is greater than the concentration calculated based on only one frequency (eg, f1 or f2) of the communication signal (eg, the first concentration M A or the third concentration M B ) is more accurate. And because the frequencies f1 and f2 are both within the communication frequency band corresponding to the first gas, the standard for selecting f1 and f2 is to satisfy σ(f1)>σ(f2), that is, the attenuation of the receiving and transmitting signals at the frequency f1 is more obvious and the sensitivity is higher, so the default value is M A M B Therefore, when module A and module B are turned on at the same time, even if M can be calculated separately AB , M A and M B , and also tend to output M AB To represent the average gas concentration on the link, M A Next is M B is the last option. However, M AB It requires two modules with different frequencies to work synchronously, which consumes more resources. Therefore, when the accuracy of gas concentration is not required to be high, the gas concentration M can be calculated using the transceiver signals (such as the first communication signal and the first echo signal) of one module (such as module A). AWhen the accuracy of gas concentration is required to be high, it is necessary to use the transceiver signals (such as the first communication signal, the first echo signal, the second communication signal and the second echo signal) of two modules (such as module A and module B) to calculate the gas concentration M using the differential absorption algorithm. AB .

[0238] In the embodiments of the present application, the situation where only one module is used to send and receive signals to calculate gas concentration can be referred to as the normal working situation, while the situation where two modules are used to send and receive signals synchronously to calculate gas concentration can be referred to as the early warning working situation. For example, for flammable and explosive gases, users are more concerned about the fact that the concentration of these gases exceeds a certain upper limit, posing a threat to production, life, and personnel health and safety. Therefore, when the gas concentration is very low below a certain early warning value, it is a situation where the gas concentration measurement accuracy requirement is low, so there is no need to use too many resources to monitor the gas concentration. Therefore, under normal circumstances, when the gas concentration is low, fewer resources are mobilized to monitor its concentration, and the system is in the normal working situation; when the gas concentration is too high, more resources are mobilized to improve the accuracy of monitoring gas concentration, and the system is in the early warning working situation. Optionally, in some special scenarios, it is not ruled out that there is exactly the opposite demand, that is, when the gas concentration is below a certain early warning value, more resources need to be dispatched to measure the gas concentration. For the scenario where more resources need to be dispatched to measure the gas concentration only when the gas concentration is below a certain early warning value, it is only necessary to change the judgment condition in the embodiment to the opposite meaning. For ease of understanding, the embodiments of the present application are mainly illustrated by taking the example that more resources need to be dispatched to measure the gas concentration only when the gas concentration is higher than a certain warning value.

[0239] Optionally, in some feasible implementations, after the first communication device sends the first communication signal and the second communication signal to the second communication device, the first communication device may further determine whether to stop or slow down the transmission of the second communication signal based on the first concentration and / or second concentration estimated during this period. Exemplarily, the first communication device may determine to stop or slow down the transmission of the second communication signal based on one of the following:

[0240] 1. When the first concentration is less than the first concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0241] 2. When the second concentration is less than the first concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0242] 3. When the difference between the first concentration and the second concentration is less than or equal to the second concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time. In other words, when module A and module B are turned on at the same time, the first concentration M is calculated based on the signal sent and received by module A alone. {A} And the second concentration M is calculated based on the received and sent signals of module A and module B. {A,B} , and M {A} and M {A,B} If the difference between the two is reduced to a certain concentration threshold (i.e., the second concentration threshold) and can be maintained for a certain period of time, module B will automatically shut down or slow down the frequency of sending the second communication signal. When ε is less than or equal to a preset percentage, the second communication signal is stopped from being sent to the second communication device or the number of times the second communication signal is sent to the second communication device within a unit time is reduced.

[0243] Optionally, the first communication device may also determine not to stop sending the second communication signal to the second communication device or not to reduce the number of times the second communication signal is sent to the second communication device per unit time according to one of the following:

[0244] 1. When the first concentration is greater than or equal to the first concentration threshold, the first communication device determines not to stop sending the second communication signal to the second communication device or not to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0245] 2. When the second concentration is greater than or equal to the first concentration threshold, the first communication device determines not to stop sending the second communication signal to the second communication device or not to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0246] 3. When the concentration difference between the first concentration and the second concentration is greater than the second concentration threshold, the first communication device determines not to stop sending the second communication signal to the second communication device or not to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0247] It should be noted that the above-mentioned stopping of sending the second communication signal to the second communication device can be understood as shutting down module B, that is, not sending the second communication signal, or the number of times the second communication signal is sent to the second communication device per unit time is 0.

[0248] It should be noted that the aforementioned reduction in the number of times the second communication signal is sent to the second communication device per unit time should not be understood as completely shutting down module B. Rather, unlike module A, which operates continuously, module B operates intermittently. That is, within the same unit time, module B transmits the second communication signal with frequency f2 significantly less frequently than module A transmits the first communication signal with frequency f1. For example, module A may transmit and receive a signal with carrier frequency f1 once every minute to calculate gas concentration, while module B may transmit and receive a signal with carrier frequency f2 once every 10 minutes to calculate gas concentration.

[0249] It should be noted that not stopping sending the second communication signal to the second communication device or not reducing the number of times the second communication signal is sent to the second communication device per unit time can be understood as module B continuing to send the second communication signal to the second communication device, that is, module A and module B synchronously send corresponding communication signals.

[0250] It is understandable that in general working conditions, when only module A transmits and receives signals and module B does not transmit or receive signals, or when module A transmits and receives signals and module B transmits and receives signals slower than module A, M can be calculated using only the transmit and receive signals of module A. {A} Optionally, M′ can be calculated by using the signal data last updated by module B at the previous moment and the real-time updated signal received and sent by module A. {A,B} For example, module A transmits and receives signals with carrier frequency f1 at 08:10, 08:11, 08:12, and 08:13, while module B only transmits and receives signals with carrier frequency f2 at 08:10. At 08:11, 08:12, and 08:13, module B does not transmit or receive signals with carrier frequency f2, so M′ {A,B} The calculation of can use the signal received and sent by module B at 08:10. Generally speaking, when M {A} or M′ {A,B} When the concentration is greater than the first threshold, it is necessary to enter the early warning working state, so the module B can be controlled to increase the number of times of sending and receiving signals, so that the module B and module A can send and receive signals synchronously, so that the signal data sent and received synchronously by modules A and B can be used to jointly calculate M {A,B} Optionally, in the case of early warning, M can be calculated using only the receiving and sending signals of module A. {A} For example, when module A and module B are sending and receiving signals synchronously, M can be calculated using the two signals with carrier frequencies f1 and f2 sent and received by module A and module B. {A,B} , and use the transceiver signal of module A to calculate M separately {A} Therefore, when the M calculated in the warning working situation {A,B} or M {A}Less than the first concentration threshold or M {A,B} With M {A} When the concentration difference between module A and module B is less than or equal to a second concentration threshold, module B can be controlled to stop working or resume intermittent operation, thus repeating the cycle. In other words, when the gas concentration is low, module B participates in gas concentration calculation with reduced workload and resources; when the gas concentration is high, module B and module A have the same degree of participation, but the entire system participates in gas concentration estimation with a greater workload, thereby improving the precision and accuracy of gas measurement.

[0251] It is understood that module B can be turned on or off by an on command sent by module A, and module B can be turned off by a off command sent by module A. Alternatively, the on or off of module A and / or module B can be controlled by a module independent of modules A and B, such as a module for calculating concentration, without limitation. It should be noted that when the modules are located within the first network device, the interactions between the modules can be understood as being implemented within a single network device.

[0252] In this embodiment of the present application, the first communication device acts as both a transmitter of the communication signal and a receiver of the echo signal. The first communication device calculates the gas concentration based on the transmit power of the transmitted communication signal and the receive power of the received echo signal, thereby enabling gas concentration estimation and reducing gas concentration estimation costs. Furthermore, the first communication device can also determine whether to enable or disable module B based on the first concentration calculated based on the signals transmitted and received by module A, thereby addressing the need for gas concentration calculation accuracy while also conserving resources.

[0253] FIG3 is another flow chart of the gas concentration determination method provided in an embodiment of the present application. It should be noted that the gas concentration determination method provided in FIG3 is applicable to the above-mentioned system architectures ③ to ⑥. As shown in FIG3, the gas concentration determination method includes the following steps S301 to S304:

[0254] S301: A first communication device sends a first communication signal to a second communication device. Correspondingly, the second communication device receives the first communication signal from the first communication device.

[0255] Here, the frequency of the first communication signal is f1, which is used for / corresponds to the first gas. It is understood that the types of gases that a wireless communication system can monitor depend on the frequency band allocated by the local operator. Generally speaking, different gases absorb signals of different frequency bands / frequencies to varying degrees. Generally speaking, the degree of a gas's absorption of a signal of a certain frequency can be measured by the absorption coefficient. Generally speaking, for a particular gas, the larger the absorption coefficient at a certain frequency, the stronger the gas's absorption of that frequency. The absorption coefficient can be measured experimentally.

[0256] In one implementation, the first communication device sending the first communication signal to the second communication device can be understood as: the first communication device sending the first communication signal to the second communication device through module A.

[0257] S302: The second communication device determines a first concentration of the first gas according to the received power and the transmitted power of the first communication signal.

[0258] In some feasible implementations, the second communication device may determine the first concentration of the first gas based on the transmit power of the first communication signal, the receive power of the first communication signal, the distance between the first communication device and the second communication device, and the absorption coefficient of the first gas at frequency f1. For example, the first concentration satisfies:

[0259]

[0260] Among them, M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal.

[0261] It should be noted that the transmit power of the first communication signal may be carried in the first communication signal, or the transmit power of the first communication signal may also be indicated to the second communication device through additional signaling, which is not limited here.

[0262] S303. The second communication device sends first indication information to the first communication device according to the first concentration; or, the second communication device sends first indication information to the first communication device.

[0263] In one example, the second communication device may determine whether to send the first indication information to the first communication device based on the first concentration. It should be noted that the second communication device may determine whether to send the first indication information to the first communication device based on one of the following:

[0264] 1. When the first concentration is greater than or equal to a first concentration threshold, the second communication device determines to send first instruction information to the first communication device. The first instruction information is used to determine / instruct the first communication device to send a second communication signal to the second communication device.

[0265] 2. When the first concentration is less than the first concentration threshold and the first indication information is not sent to the first communication device for a predetermined period of time, the second communication device determines to send the first indication information to the first communication device. The first indication information is used to determine / instruct the first communication device to send a second communication signal to the second communication device.

[0266] Optionally, the second communication device may also determine not to send the first indication information to the first communication device according to the following condition: when the first concentration is less than a first concentration threshold, determine not to send the first indication information to the first communication device.

[0267] It should be noted that when the second communication device determines to send the first indication information to the first communication device, the second communication device will send the first indication information to the first communication device. When the second communication device determines not to send the first indication information to the first communication device, the second communication device will not send the first indication information to the first communication device. The following embodiments of the present application are mainly illustrated by taking the example of the second communication device sending the first indication information to the first communication device. Accordingly, the first communication device can receive the first indication information from the second communication device.

[0268] In another example, the second communication device may directly send first indication information to the first communication device. The first indication information is used to determine whether the first communication device should send the second communication signal to the second communication device, and the first indication information includes a first concentration. That is, when the first indication information directly includes the first concentration, the first indication information must be sent to the first communication device regardless of the value of the first concentration. In other words, when the first indication information includes the first concentration, the second communication device does not need to determine whether to send the first indication information to the first communication device based on the first concentration. Instead, the second communication device sends the first indication information to the first communication device in real time or periodically. The first indication information is used by the first communication device to independently determine whether to send the second communication signal to the second communication device.

[0269] S304: The first communication device determines whether to send a second communication signal to the second communication device according to the first indication information from the second communication device.

[0270] In one example, when the second communication device determines to send first indication information to the first communication device based on the first concentration, the first indication information is used to instruct the first communication device to send a second communication signal to the second communication device. Therefore, after the first communication device receives the first indication information from the second communication device, the first communication device can determine to send the second communication signal to the second communication device based on the first indication information. For example, when the first indication information is 1, it is used to instruct the first communication device to send the second communication signal to the second communication device. For another example, when the first indication information is 0, it is used to instruct the first communication device to send the second communication signal to the second communication device.

[0271] In another example, the first indication information may directly include the first concentration. Therefore, after the first communication device receives the first concentration, the first communication device needs to independently determine whether to send the second communication signal to the second communication device based on the received first concentration. Generally speaking, when the first indication information includes the first concentration, the first communication device may determine whether to send the second communication signal to the second communication device based on one of the following:

[0272] 1. When the first concentration is greater than or equal to the first concentration threshold, the first communication device determines to send a second communication signal to the second communication device; or

[0273] 2. When the first concentration is less than the first concentration threshold and the second communication signal is not sent to the second communication device for more than a preset time period, the first communication device determines to send the second communication signal to the second communication device.

[0274] Optionally, the first communication device may determine not to send the second communication signal to the second communication device according to one of the following: when the first concentration is less than a first concentration threshold, the first communication device determines not to send the second communication signal to the second communication device.

[0275] It should be noted that when the first communication device determines to send the second communication signal to the second communication device, the first communication device will send the first communication signal and the second communication signal to the second communication device. When the first communication device determines not to send the second communication signal to the second communication device, the first communication device will not send the first communication signal and the second communication signal to the second communication device. For ease of understanding, the following embodiments of the present application are mainly illustrated by taking the example of the first communication device sending the first communication signal and the second communication signal to the second communication device. It is understandable that the first communication device can specifically send the first communication signal to the second communication device through module A and send the second communication signal to the second communication device through module B. Among them, the number of times module A sends the first communication signal per unit time is equal to the number of times module B sends the second communication signal per unit time. Accordingly, the second communication device receives the first communication signal and the second communication signal from the first communication device.

[0276] The frequency of the second communication signal is f2, which is used for the first gas, and the absorption coefficient of the first gas at frequency f1 is greater than the absorption coefficient of the first gas at frequency f2. In other words, the attenuation of the first communication signal at frequency f1 is more significant than the attenuation of the second communication signal at frequency f2, and the sensitivity is higher. Therefore, the second communication device can determine the second concentration of the first gas based on the transmit power and receive power of the first communication signal and the transmit power and receive power of the second communication signal. It should be noted that the transmit power of the second communication signal can be carried in the second communication signal, or the transmit power of the second communication signal can also be indicated to the second communication device through additional signaling, which is not limited here.

[0277] Exemplarily, the second communication device determines the second concentration of the first gas based on the transmit power of the first communication signal, the receive power of the first communication signal, the transmit power of the second communication signal, and the receive power of the second communication signal. This can be understood as follows: the second communication device determines the second concentration of the first gas on the communication link between the first communication device and the second communication device based on the transmit power of the first communication signal, the receive power of the first communication signal, the transmit power of the second communication signal, the receive power of the second communication signal, the distance between the first communication device and the second communication device, the absorption coefficient of the first gas at a frequency of f1, and the absorption coefficient of the first gas at a frequency of f2. For example, the second concentration satisfies:

[0278]

[0279] Among them, M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second communication signal.

[0280] Optionally, when the first communication device transmits the second communication signal, the second communication device may further determine a third concentration of the first gas based on the transmit power of the second communication signal and the receive power of the second communication signal. Exemplarily, the third concentration of the first gas may be determined based on the transmit power of the second communication signal, the receive power of the second communication signal, the distance between the first communication device and the second communication device, and the absorption coefficient of the first gas at frequency f2. Exemplarily, the third concentration satisfies:

[0281]

[0282] Among them, M B represents the third concentration, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the first communication device and the second communication device, P B0 (f2) represents the transmission power of the second communication signal, P B (f2) represents the received power of the second communication signal.

[0283] Generally speaking, under the same gas environment, the concentration (for example, the second concentration M) calculated based on two communication signals with different frequencies (for example, f1 and f2) in the same unit time is AB ) is greater than the concentration calculated based on only one frequency (eg, f1 or f2) of the communication signal (eg, the first concentration M A or the third concentration M B ) is more accurate. And because the frequencies f1 and f2 are both within the communication frequency band corresponding to the first gas, the standard for selecting f1 and f2 is to satisfy σ(f1)>σ(f2), that is, the attenuation of the communication signal with frequency f1 is more obvious and the sensitivity is higher. Therefore, the default value is M A M B Therefore, when the modules A and B of the first communication device are turned on at the same time, even if M AB , M A and M B , and also tend to output M AB To represent the average gas concentration on the link, M A Next is M B is the last option. However, M AB It requires two modules with different frequencies to work synchronously, which consumes more resources. Therefore, when the accuracy of gas concentration is not required to be high, the communication signal (such as the first communication signal) of one module (such as module A) can be used to calculate the gas concentration M. A When the accuracy of gas concentration is required to be high, it is necessary to use the communication signals (such as the first communication signal and the second communication signal) of two modules (such as module A and module B) to calculate the gas concentration M using the differential absorption algorithm. AB .

[0284] In the embodiments of the present application, the situation where the gas concentration is calculated using the communication signal sent by only one module can be referred to as the normal working situation, while the situation where the gas concentration is calculated using the communication signals sent synchronously by two modules can be referred to as the early warning working situation. For example, for flammable and explosive gases, users are more concerned about the fact that the concentration of these gases exceeds a certain upper limit, posing a threat to production, life, and personnel health and safety. Therefore, when the gas concentration is very low below a certain early warning value, it is a situation where the gas concentration measurement accuracy requirement is low, so there is no need to use too many resources to monitor the gas concentration. Therefore, under normal circumstances, when the gas concentration is low, fewer resources are mobilized to monitor its concentration, and the system is in the normal working situation; when the gas concentration is too high, more resources are mobilized to improve the accuracy of monitoring the gas concentration, and the system is in the early warning working situation. Optionally, in some special scenarios, it is not ruled out that there is exactly the opposite requirement, that is, when the gas concentration is below a certain early warning value, more resources need to be dispatched to measure the gas concentration. For the scenario where more resources need to be dispatched to measure the gas concentration only when the gas concentration is below a certain early warning value, it is only necessary to change the judgment condition in the embodiment to the opposite meaning. For ease of understanding, the embodiments of the present application are mainly illustrated by taking the example that more resources need to be dispatched to measure the gas concentration only when the gas concentration is higher than a certain warning value.

[0285] Optionally, in some feasible implementations, after the second communication device receives the first communication signal and the second communication signal from the first communication device, the second communication device may also determine whether to send second instruction information to the first communication device based on the first concentration and / or second concentration estimated during this period, where the second instruction information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time. For example:

[0286] 1. When the first concentration is less than a first concentration threshold, the second communication device sends second indication information to the first communication device.

[0287] 2. When the second concentration is less than the first concentration threshold, the second communication device sends second indication information to the first communication device.

[0288] 3. When the difference between the first concentration and the second concentration is less than or equal to the second concentration threshold, the second communication device sends a second indication message to the first communication device. Optionally, you can also define When ε is less than or equal to the preset percentage, the second communication device sends second indication information to the first communication device.

[0289] For ease of understanding, the following explanation will primarily use the example of a second communication device sending second indication information to a first communication device. Accordingly, the first communication device receives the second indication information from the second communication device and, based on the second indication information, may stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0290] It should be noted that the second instruction information may directly or indirectly instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0291] For example, when indicating in a direct manner, the second indication information can directly instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time. For example, when the second indication information is 1, it is used to instruct the first communication device to stop sending the second communication signal to the second communication device; when the second indication information is 0, it is used to instruct the first communication device to reduce the number of times the second communication signal is sent to the second communication device per unit time. Alternatively, when the second indication information is 0, it is used to instruct the first communication device to reduce the number of times the second communication signal is sent to the second communication device per unit time; when the second indication information is 1, it is used to instruct the first communication device to stop sending the second communication signal to the second communication device.

[0292] For another example, when indicating indirectly, the second indication information may directly include the first concentration and / or the second concentration. Therefore, after the first communication device receives the first concentration and / or the second concentration, the first communication device needs to determine whether to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time based on the received first concentration and / or second concentration. It should be noted that when the second indication information directly includes the first concentration and / or the second concentration, the second indication information needs to be sent to the first communication device regardless of the value of the first concentration and / or the second concentration. That is to say, when the second indication information includes the first concentration and / or the second concentration, the second communication device does not need to determine whether to send the second indication information to the first communication device based on the first concentration and / or the second concentration, but sends the second indication information to the first communication device in real time or periodically.

[0293] Generally speaking, when the second indication information includes the first concentration and / or the second concentration, the first communication device determines to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time according to one of the following:

[0294] 1. When the first concentration is less than the first concentration threshold, the first communication device determines to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0295] 2. When the second concentration is less than the first concentration threshold, the first communication device determines to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0296] 3. When the concentration difference between the first concentration and the second concentration is less than or equal to the second concentration threshold, the first communication device determines to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time. Optionally, you can also define When ε is less than or equal to the preset percentage, the first communication device determines to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device within a unit time.

[0297] Optionally, the first communication device may also determine not to stop sending the second communication signal to the second communication device or not to reduce the number of times the second communication signal is sent to the second communication device per unit time according to one of the following:

[0298] 1. When the first concentration is greater than or equal to the first concentration threshold, the first communication device determines not to stop sending the second communication signal to the second communication device or not to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0299] 2. When the second concentration is greater than or equal to the first concentration threshold, the first communication device determines not to stop sending the second communication signal to the second communication device or not to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0300] 3. When the concentration difference between the first concentration and the second concentration is greater than the second concentration threshold, the first communication device determines not to stop sending the second communication signal to the second communication device or not to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0301] It should be noted that the above-mentioned stopping of sending the second communication signal to the second communication device can be understood as shutting down module B, that is, not sending the second communication signal, or the number of times the second communication signal is sent to the second communication device per unit time is 0.

[0302] It should be noted that the aforementioned reduction in the number of times the second communication signal is sent to the second communication device per unit time should not be understood as completely shutting down module B. Rather, unlike module A, which operates continuously, module B operates intermittently. That is, within the same unit time, module B transmits the second communication signal with frequency f2 significantly less frequently than module A transmits the first communication signal with frequency f1. For example, module A transmits a signal with carrier frequency f1 once every minute to calculate gas concentration, while module B transmits a signal with carrier frequency f2 once every 10 minutes to calculate gas concentration.

[0303] It should be noted that not stopping sending the second communication signal to the second communication device or not reducing the number of times the second communication signal is sent to the second communication device per unit time can be understood as module B continuing to send the second communication signal to the second communication device, that is, module A and module B synchronously send corresponding communication signals.

[0304] It is understandable that in general working conditions, when only module A sends a communication signal and module B does not send a communication signal, or when module A sends a communication signal and module B sends a communication signal more slowly than module A, M can be calculated using only the communication signal sent by module A. {A} Optionally, M′ can be calculated by using the signal data last updated by module B at the previous moment and the communication signal of module A updated in real time. {A,B} For example, module A sends signals with carrier frequency f1 at 08:10, 08:11, 08:12, and 08:13, while module B sends signals with carrier frequency f2 only at 08:10. At 08:11, 08:12, and 08:13, module B does not send signals with carrier frequency f2, so M′ {A,B} The calculation of can use the communication signal sent by module B at 08:10. Generally speaking, when M {A} or M′ {A,B} When the concentration is greater than the first threshold, it is necessary to enter the early warning working state, so the module B can be controlled to increase the number of times the communication signal is sent, so that the module B and module A send the communication signal synchronously, so that the communication signals sent synchronously by modules A and B can be used to jointly calculate M {A,B} Optionally, in the early warning working situation, M can also be calculated separately using only the communication signal sent by module A. {A} For example, when module A and module B send communication signals synchronously, M can be calculated using the two signals with carrier frequencies f1 and f2 sent by module A and module B. {A,B} , and calculate M separately using the communication signal sent by module A {A} Therefore, when the M calculated in the warning working situation {A,B}or M {A} Less than the first concentration threshold or M {A,B} With M {A} When the concentration difference between the two is less than or equal to a second concentration threshold, a second instruction message can be sent to control module B to stop working or resume intermittent operation, thus repeating the cycle. In other words, when the gas concentration is low, module B participates in gas concentration calculation with reduced workload and resources; when the gas concentration is high, module B and module A have the same degree of participation, but the entire system participates in gas concentration estimation with a greater workload, thereby improving the precision and accuracy of gas measurement.

[0305] In this embodiment of the present application, a first communication device is a transmitter of a communication signal, and a second communication device is a receiver of the communication signal. The second communication device calculates the gas concentration based on the transmit power of the communication signal sent by the transmitter and the receive power of the communication signal received by the receiver, thereby achieving gas concentration estimation and reducing the cost of gas concentration estimation. Furthermore, the first communication device can also determine whether to enable or disable module B based on an instruction from the second communication device (e.g., the first instruction information or the second instruction information), which not only takes into account the need for gas concentration calculation accuracy but also helps save resources.

[0306] The communication device provided in this application will be described in detail below with reference to FIG. 4 to FIG. 7 .

[0307] Please refer to Figure 4, which is a structural diagram of a communication device provided in an embodiment of the present application. The communication device shown in Figure 4 can be used to perform part or all of the functions of the first communication device in the method embodiment described in Figures 2 or 3 above. The device can be a first communication device, or a device in the first communication device, or a device that can be used in combination with the first communication device. Among them, the communication device can also be a chip system. The communication device shown in Figure 4 may include a transceiver unit 401 and a processing unit 402. Among them, the processing unit 402 is used to perform data processing, such as calculating the concentration and judging whether to send a second communication signal based on the concentration. The transceiver unit 401 integrates a receiving unit and a sending unit. The transceiver unit 401 can also be called a communication unit. Alternatively, the transceiver unit 401 can also be split into a receiving unit and a sending unit. The processing unit 402 and the transceiver unit 401 below are similar and will not be repeated below. Among them:

[0308] In a first possible implementation:

[0309] The transceiver unit 401 is configured to send a first communication signal to a second communication device;

[0310] The transceiver unit 401 is configured to receive a first echo signal of the first communication signal, where the frequency of the first communication signal is f1, and f1 is for the first gas;

[0311] a processing unit 402, configured to determine a first concentration of the first gas according to the transmit power of the first communication signal and the receive power of the first echo signal;

[0312] The processing unit 402 is configured to determine whether to send a second communication signal to the second communication device according to the first concentration.

[0313] In a possible implementation, when determining whether to send the second communication signal to the second communication device according to the first concentration, the processing unit 402 is configured to:

[0314] Determining to send a second communication signal to the second communication device according to one of the following:

[0315] When the first concentration is greater than or equal to a first concentration threshold, determining to send the second communication signal to the second communication device; or,

[0316] When the first concentration is less than the first concentration threshold and the second communication signal is not sent to the second communication device for more than a preset time period, it is determined to send the second communication signal to the second communication device.

[0317] In a possible implementation, when determining whether to send the second communication signal to the second communication device according to the first concentration, the processing unit 402 is configured to:

[0318] Determine not to send the second communication signal to the second communication device according to the following conditions:

[0319] When the first density is less than a first density threshold, it is determined not to transmit the second communication signal to the second communication device.

[0320] In a possible implementation, the transceiver unit 401 is configured to send the first communication signal and the second communication signal to a second communication device;

[0321] The transceiver unit 401 is configured to receive a first echo signal of the first communication signal and a second echo signal of the second communication signal, where the frequency of the second communication signal is f2, the frequency f2 is for the first gas, and an absorption coefficient of the first gas at a frequency of f1 is greater than an absorption coefficient of the first gas at a frequency of f2;

[0322] The processing unit 402 is configured to determine a second concentration of the first gas based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, and the reception power of the second echo signal.

[0323] In a possible implementation, the processing unit 402 is further configured to:

[0324] When the first concentration is less than the first concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time; or

[0325] When the second concentration is less than the first concentration threshold, the sending of the second communication signal to the second communication device is stopped or the number of times the second communication signal is sent to the second communication device per unit time is reduced.

[0326] In a possible implementation, the processing unit 402 is further configured to:

[0327] When the concentration difference between the first concentration and the second concentration is less than or equal to a second concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0328] In a possible implementation, the number of times the first communication signal is sent within a unit time is greater than or equal to the number of times the second communication signal is sent within the unit time.

[0329] In a possible implementation, when determining the first concentration of the first gas according to the transmit power of the first communication signal and the receive power of the first echo signal, the processing unit 402 is configured to:

[0330] The first concentration of the first gas is determined based on the transmission power of the first communication signal, the reception power of the first echo signal, the distance between the first communication device and the second communication device, and the absorption coefficient of the first gas at the frequency f1.

[0331] In a possible implementation, the first concentration satisfies:

[0332]

[0333] Among them, the M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal.

[0334] In one possible implementation, when determining the second concentration of the first gas based on the transmit power of the first communication signal, the receive power of the first echo signal, the transmit power of the second communication signal, and the receive power of the second echo signal, the processing unit 402 is configured to:

[0335] Determine a second concentration of the first gas on the communication link between the second communication device and the second communication device based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, the reception power of the second echo signal, the distance between the first communication device and the second communication device, the absorption coefficient of the first gas at the frequency f1, and the absorption coefficient of the first gas at the frequency f2.

[0336] In one possible implementation, the second concentration satisfies:

[0337]

[0338] Among them, the M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second echo signal.

[0339] In a possible implementation, both f1 and f2 belong to licensed frequency bands, or f1 belongs to a licensed frequency band and f2 belongs to an unlicensed frequency band.

[0340] It should be noted that in the first feasible embodiment described above, transceiver unit 401 may include two modules, namely module A and module B. Module A is used to send a first communication signal to a second communication device and receive a first echo signal from the second communication device, and module B is used to send a second communication signal to the second communication device and receive a second echo signal from the second communication device. Furthermore, when on / off module B is operating, if processing unit 402 determines that the second communication signal needs to be sent to the second communication device, processing unit 402 may send an on / off indication to module B in transceiver unit 401. Here, the on / off indication may be implemented internally by the first communication device. Optionally, the processing unit may also include two modules, namely a concentration calculation module and a concentration determination module. The concentration calculation module is used to calculate the first concentration and / or the second concentration, and the concentration determination module is used to determine whether to turn module B on or off.

[0341] In the second possible implementation:

[0342] a transceiver unit 401 configured to send a first communication signal to a second communication device, wherein the frequency of the first communication signal is f1, the frequency f1 is for a first gas, and the transmit power and receive power of the first communication signal are used to determine a first concentration of the first gas;

[0343] The processing unit 402 is used to determine whether to send a second communication signal to the second communication device based on the first indication information from the second communication device, where the frequency of the second communication signal is f2, and the f2 is used for the first gas, and the absorption coefficient of the first gas at the frequency of f1 is greater than the absorption coefficient of the first gas at the frequency of f2.

[0344] In a possible implementation, the first indication information is used to instruct the first communication device to send the second communication signal to the second communication device.

[0345] In a possible implementation, the first indication information includes the first concentration.

[0346] In a possible implementation, the processing unit 402 is further configured to:

[0347] The first communication signal and the second communication signal are sent to the second communication device.

[0348] In a possible implementation, the number of times the first communication signal is sent within a unit time is greater than or equal to the number of times the second communication signal is sent within the unit time.

[0349] In a possible implementation, the processing unit 402 is further configured to:

[0350] According to the second instruction information from the second communication device, it is determined to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0351] In a possible implementation, the second indication information is used to instruct to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0352] In a possible implementation, the second indication information includes the first concentration and / or the second concentration of the first gas, where the second concentration is determined based on the transmit power and receive power of the first communication signal, and the transmit power and receive power of the second communication signal.

[0353] In a possible implementation, both f1 and f2 belong to licensed frequency bands, or f1 belongs to a licensed frequency band, and f2 belongs to an unlicensed frequency band.

[0354] It should be noted that in the second feasible embodiment described above, the transceiver unit 401 may include two modules, namely module A and module B, where module A is used to send a first communication signal to the second communication device, and module B is used to send a second communication signal to the second communication device. In addition, when the on / off module B is in operation, if the processing unit 402 determines that the second communication signal needs to be sent to the second communication device, the processing unit 402 may send an on / off indication to module B in the transceiver unit 401. Here, the on / off indication may be implemented internally by the first communication device.

[0355] Please refer to Figure 5, which is a structural diagram of another communication device provided in an embodiment of the present application. The communication device shown in Figure 5 can be used to perform part or all of the functions of the second communication device in the method embodiment described in Figures 2 or 3 above. The device can be a second communication device, or a device in the second communication device, or a device that can be used in combination with the second communication device. Among them, the communication device can also be a chip system. The communication device shown in Figure 5 may include a transceiver unit 501 and a processing unit 502. Among them, the processing unit 502 is used to perform data processing, such as calculating the concentration and judging whether to send a second communication signal based on the concentration. The transceiver unit 501 integrates a receiving unit and a sending unit. The transceiver unit 501 can also be called a communication unit. Alternatively, the transceiver unit 501 can also be split into a receiving unit and a sending unit. The processing unit 502 and the transceiver unit 501 below are similar and will not be repeated below. Among them:

[0356] The transceiver unit 501 is configured to receive a first communication signal from the first communication device, wherein the frequency of the first communication signal is f1, and the frequency f1 is for the first gas;

[0357] A processing unit 502 is configured to determine a first concentration of the first gas according to the received power and the transmitted power of the first communication signal;

[0358] The processing unit 502 is configured to determine whether to send first indication information to the first communication device according to the first concentration, wherein the first indication information is used to determine whether the first communication device sends the second communication signal to the second communication device; or

[0359] The transceiver unit 501 is configured to send first indication information to the first communication device, where the first indication information is used to determine whether the first communication device sends the second communication signal to the second communication device, and the first indication information includes the first concentration.

[0360] In a possible implementation, when determining whether to send first indication information to the first communication device according to the first concentration, the processing unit 502 is configured to:

[0361] Determining to send the first indication information to the first communication device according to one of the following:

[0362] When the first concentration is greater than or equal to a first concentration threshold, determining to send the first indication information to the first communication device; or,

[0363] When the first concentration is less than the first concentration threshold and the first indication information is not sent to the first communication device for more than a preset time period, it is determined to send the first indication information to the first communication device.

[0364] In a possible implementation, when determining whether to send first indication information to the first communication device according to the first concentration, the processing unit 502 is configured to:

[0365] Determine not to send the first indication information to the first communication device according to the following conditions:

[0366] When the first concentration is less than a first concentration threshold, it is determined not to send the first indication information to the first communication device.

[0367] In a possible implementation, the first indication information is used to determine that the first communication device sends the second communication signal to the second communication device;

[0368] The transceiver unit 501 is further configured to receive the first communication signal and the second communication signal from the first communication device;

[0369] The processing unit 502 is further configured to determine a second concentration of the first gas according to the transmission power and the reception power of the first communication signal, and the transmission power and the reception power of the second communication signal.

[0370] In a possible implementation, the processing unit 502 is further configured to:

[0371] When the first concentration is less than the first concentration threshold, second indication information is sent to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time; or

[0372] When the second concentration is less than the first concentration threshold, second indication information is sent to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0373] In a possible implementation, the processing unit 502 is further configured to:

[0374] When the concentration difference between the first concentration and the second concentration is less than or equal to a second concentration threshold, second indication information is sent to the first communication device, and the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

[0375] In a possible implementation, the processing unit 502 is further configured to:

[0376] Second indication information is sent to the first communication device, where the second indication information includes the first concentration and / or the second concentration.

[0377] In a possible implementation, when determining the first concentration of the first gas according to the received power and the transmitted power of the first communication signal, the processing unit 502 is configured to:

[0378] The first concentration of the first gas is determined according to the transmission power of the first communication signal, the reception power of the first communication signal, the distance between the second communication device and the first communication device, and the absorption coefficient of the first gas at the frequency f1.

[0379] In a possible implementation, the first concentration satisfies:

[0380]

[0381] Among them, the M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the second communication device and the first communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal.

[0382] In a possible implementation, when determining the second concentration of the first gas based on the transmit power and receive power of the first communication signal and the transmit power and receive power of the second communication signal, the processing unit 502 is configured to:

[0383] Determine a second concentration of the first gas on the communication link between the first communication device and the first communication device based on the transmission power of the first communication signal, the reception power of the first communication signal, the transmission power of the second communication signal, the reception power of the second communication signal, the distance between the second communication device and the first communication device, the absorption coefficient of the first gas at the frequency f1, and the absorption coefficient of the first gas at the frequency f2.

[0384] In one possible implementation, the second concentration satisfies:

[0385]

[0386] Among them, the M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the second communication device and the first communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second communication signal.

[0387] In a possible implementation, both f1 and f2 belong to licensed frequency bands, or f1 belongs to a licensed frequency band and f2 belongs to an unlicensed frequency band.

[0388] It should be noted that the above-mentioned processing unit may also include two modules, namely a concentration calculation module and a concentration judgment module, wherein the concentration calculation module is used to calculate the first concentration and / or the second concentration, and the concentration judgment module is used to determine whether to turn module B on or off.

[0389] For other possible implementations of the communication apparatus, reference may be made to the relevant descriptions of the first communication device and the second communication device in the method embodiments corresponding to FIG. 2 and FIG. 3 , which will not be described in detail here.

[0390] Please refer to Figure 6, which is a structural diagram of another communication device provided in an embodiment of the present application. As shown in Figure 6, the communication device can be the first communication device or the second communication device described in the embodiment of the present application, wherein the first communication device or the second communication device can specifically be a terminal device. For the sake of convenience, Figure 6 only shows the main components of the terminal device. As shown in Figure 6, the terminal device includes a processor, a memory, a control circuit, an antenna, and an input and output device. The processor is mainly used to process the communication protocol and communication data, as well as to control the entire terminal device, execute software programs, and process the data of the software programs. The memory is mainly used to store software programs and data. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, microphones, keyboards, etc., are mainly used to receive data input by users and output data to users.

[0391] Taking a mobile phone as an example, when the terminal device is powered on, the processor reads the software program stored in the storage unit, interprets and executes the software program's instructions, and processes the software program's data. When data needs to be transmitted wirelessly, the processor performs baseband processing on the data to be transmitted and outputs the baseband signal to the control circuit. The control circuit then performs RF processing on the baseband signal and transmits the RF signal as electromagnetic waves via the antenna. When data is sent to the terminal device, the control circuit receives the RF signal via the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0392] Those skilled in the art will appreciate that, for ease of illustration, FIG6 shows only one memory and processor. In some embodiments, the terminal device may include multiple processors and memories. The memory may also be referred to as a storage medium or storage device, etc., which is not limited in the present embodiment.

[0393] As an optional implementation, the processor may include a baseband processor and a central processing unit (CPU). The baseband processor is primarily responsible for processing communication protocols and communication data, while the CPU is primarily responsible for controlling the entire terminal device, executing software programs, and processing data from these programs. The processor in Figure 6 integrates the functions of both the baseband processor and the CPU. Those skilled in the art will appreciate that the baseband processor and the CPU may also be independent processors interconnected via a bus or other technology. A terminal device may include multiple baseband processors to accommodate different network standards, or multiple CPUs to enhance its processing capabilities. The various components of the terminal device may be connected via various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The CPU may also be referred to as a central processing circuit or a central processing chip. The functionality for processing communication protocols and communication data may be built into the processor or stored as a software program in a storage unit, with the processor executing the software program to implement the baseband processing functionality.

[0394] In one example, the antenna and control circuit with transceiver functions can be considered the transceiver unit 610 of the terminal device, and the processor with processing functions can be considered the processing unit 620 of the terminal device. As shown in Figure 6, the terminal device includes a transceiver unit 610 and a processing unit 620. The transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver device, etc. Optionally, the device used to implement the receiving function in the transceiver unit 610 can be considered a receiving unit, and the device used to implement the transmitting function in the transceiver unit 610 can be considered a transmitting unit, that is, the transceiver unit 610 includes a receiving unit and a transmitting unit. For example, the receiving unit can also be referred to as a receiver, a receiver, a receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0395] Please refer to Figure 7, which is a structural diagram of another communication device provided in an embodiment of the present application. As shown in Figure 7, the communication device can be the first communication device or the second communication device described in the embodiment of the present application, wherein the first communication device or the second communication device can specifically be an access network device, and the access network device includes: a baseband device 701, a radio frequency device 702, and an antenna 703. In the uplink direction, the radio frequency device 702 receives information sent by the terminal device through the antenna 703, and sends the information sent by the terminal device to the baseband device 701 for processing. In the downlink direction, the baseband device 701 processes the information of the terminal device and sends it to the radio frequency device 702. The radio frequency device 702 processes the information of the terminal device and sends it to the terminal device through the antenna 703.

[0396] The baseband device 701 includes one or more processing units 7011, a storage unit 7012, and an interface 7013. The processing unit 7011 is used to support the access network device in performing the functions of the access network device in the above-mentioned method embodiment. The storage unit 7012 is used to store software programs and / or data. The interface 7013 is used to exchange information with the radio frequency device 702, and the interface includes an interface circuit for inputting and outputting information. In one implementation, the processing unit is an integrated circuit, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more field programmable gate arrays (FPGAs), or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip. The storage unit 7012 and the processing unit 7011 can be located in the same chip, i.e., an on-chip storage element. Alternatively, the storage unit 7012 and the processing unit 7011 can be located on different chips from the processing unit 7011, i.e., an off-chip storage element. The storage unit 7012 can be a memory or a general term for multiple memories or storage elements.

[0397] The access network device may implement some or all of the steps in the above method embodiments in the form of one or more processing unit schedulers. For example, the corresponding functions of the first communication device or the second communication device in Figure 2 or Figure 3 may be implemented. The one or more processing units may support the same wireless access technology or different wireless access technologies.

[0398] An embodiment of the present application also provides a computer-readable storage medium, which stores instructions. When the computer-readable storage medium is executed on a processor, the method flow of the above method embodiment is implemented.

[0399] The embodiment of the present application also provides a computer program product. When the computer program product runs on a processor, the method flow of the above method embodiment is implemented.

[0400] Those skilled in the art will appreciate that the units and steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0401] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is merely a logical functional division. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0402] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned computer-readable storage medium can be any available medium that can be accessed by a computer. By way of example and not limitation, computer-readable media may include random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), universal serial bus flash disk, mobile hard disk, or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer. In addition, by way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), or direct rambus RAM (DR RAM).

[0403] The above are only specific embodiments of the present application, but the scope of protection of the embodiments of the present application is not limited thereto. Any person skilled in the art can easily conceive of changes or substitutions within the technical scope disclosed in the embodiments of the present application, and such changes or substitutions should be included in the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application should be based on the scope of protection of the claims.

Claims

1. A method for determining gas concentration, characterized in that: The method is applied to a first communication device, comprising: sending a first communication signal to a second communication device; receiving a first echo signal of the first communication signal, where the frequency of the first communication signal is f1, and the frequency f1 is for a first gas; determining a first concentration of the first gas according to the transmission power of the first communication signal and the reception power of the first echo signal; Whether to transmit a second communication signal to the second communication device is determined based on the first density.

2. The method according to claim 1, characterized in that The determining, according to the first concentration, whether to send a second communication signal to the second communication device includes: Determining to send a second communication signal to the second communication device according to one of the following: When the first concentration is greater than or equal to a first concentration threshold, determining to send the second communication signal to the second communication device; or, When the first concentration is less than the first concentration threshold and the second communication signal is not sent to the second communication device for more than a preset time period, it is determined to send the second communication signal to the second communication device.

3. The method according to claim 1, characterized in that The determining, according to the first concentration, whether to send a second communication signal to the second communication device includes: Determine not to send the second communication signal to the second communication device according to the following conditions: When the first density is less than a first density threshold, it is determined not to transmit the second communication signal to the second communication device.

4. The method according to claim 2, characterized in that After determining, according to the first concentration, to send a second communication signal to the second communication device, the method further includes: sending the first communication signal and the second communication signal to a second communication device; receiving a first echo signal of the first communication signal and a second echo signal of the second communication signal, where the frequency of the second communication signal is f2, the frequency f2 is for the first gas, and an absorption coefficient of the first gas at the frequency f1 is greater than an absorption coefficient of the first gas at the frequency f2; A second concentration of the first gas is determined based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, and the reception power of the second echo signal.

5. The method according to claim 4, characterized in that After sending the first communication signal and the second communication signal to the second communication device, the method further includes: When the first concentration is less than the first concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time; or When the second concentration is less than the first concentration threshold, the sending of the second communication signal to the second communication device is stopped or the number of times the second communication signal is sent to the second communication device per unit time is reduced.

6. The method according to claim 4, characterized in that After sending the first communication signal and the second communication signal to the second communication device, the method further includes: When the concentration difference between the first concentration and the second concentration is less than or equal to a second concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

7. The method according to any one of claims 4 to 6, characterized in that The number of times the first communication signal is sent within a unit time is greater than or equal to the number of times the second communication signal is sent within the unit time.

8. The method according to any one of claims 1 to 7, characterized in that The determining, according to the transmission power of the first communication signal and the reception power of the first echo signal, the first concentration of the first gas includes: The first concentration of the first gas is determined based on the transmission power of the first communication signal, the reception power of the first echo signal, the distance between the first communication device and the second communication device, and the absorption coefficient of the first gas at the frequency f1.

9. The method according to claim 8, characterized in that The first concentration satisfies: Among them, the M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal.

10. The method according to any one of claims 4 to 7, characterized in that: The determining the second concentration of the first gas according to the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, and the reception power of the second echo signal includes: Determine a second concentration of the first gas on the communication link between the second communication device and the second communication device based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, the reception power of the second echo signal, the distance between the first communication device and the second communication device, the absorption coefficient of the first gas at the frequency f1, and the absorption coefficient of the first gas at the frequency f2.

11. The method according to claim 10, characterized in that The second concentration satisfies: Among them, the M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second echo signal.

12. The method according to any one of claims 1 to 11, characterized in that Both f1 and f2 belong to the authorized frequency band, or f1 belongs to the authorized frequency band and f2 belongs to the unlicensed frequency band.

13. A method for determining gas concentration, characterized in that: The method is applied to a first communication device, comprising: Sending a first communication signal to a second communication device, where the frequency of the first communication signal is f1, the f1 is for a first gas, and the transmission power and the reception power of the first communication signal are used to determine a first concentration of the first gas; Determine whether to send a second communication signal to the second communication device based on the first indication information from the second communication device, where the frequency of the second communication signal is f2, and f2 is used for the first gas, and the absorption coefficient of the first gas at the frequency of f1 is greater than the absorption coefficient of the first gas at the frequency of f2.

14. The method according to claim 13, characterized in that The first indication information is used to instruct the first communication device to send the second communication signal to the second communication device.

15. The method according to claim 13, characterized in that The first indication information includes the first concentration.

16. The method according to any one of claims 13 to 15, characterized in that: After determining, according to the first indication information from the second communication device, to send a second communication signal to the second communication device, the method further includes: The first communication signal and the second communication signal are sent to the second communication device.

17. The method according to claim 16, characterized in that The number of times the first communication signal is sent within a unit time is greater than or equal to the number of times the second communication signal is sent within the unit time.

18. The method according to claim 16 or 17, characterized in that After sending the first communication signal and the second communication signal to the second communication device, the method further includes: According to the second instruction information from the second communication device, it is determined to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time.

19. The method according to claim 18, characterized in that The second indication information is used to instruct to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device within a unit time.

20. The method according to claim 18, wherein The second indication information includes the first concentration and / or the second concentration of the first gas, where the second concentration is determined based on the transmission power and reception power of the first communication signal and the transmission power and reception power of the second communication signal.

21. The method according to any one of claims 13 to 20, characterized in that: Both f1 and f2 belong to the authorized frequency band, or f1 belongs to the authorized frequency band and f2 belongs to the unlicensed frequency band.

22. A method for determining gas concentration, characterized in that: The method is applied to a second communication device, comprising: receiving a first communication signal from the first communication device, wherein the frequency of the first communication signal is f1, and the frequency f1 is for a first gas; determining a first concentration of the first gas according to the received power and the transmitted power of the first communication signal; determining whether to send first indication information to the first communication device according to the first concentration, where the first indication information is used to determine whether the first communication device sends the second communication signal to the second communication device; or First indication information is sent to the first communication device, where the first indication information is used to determine whether the first communication device sends the second communication signal to the second communication device, and the first indication information includes the first concentration.

23. The method according to claim 22, characterized in that The determining, according to the first concentration, whether to send first indication information to the first communication device includes: Determining to send the first indication information to the first communication device according to one of the following: When the first concentration is greater than or equal to a first concentration threshold, determining to send the first indication information to the first communication device; or, When the first concentration is less than the first concentration threshold and the first indication information is not sent to the first communication device for more than a preset time period, it is determined to send the first indication information to the first communication device.

24. The method according to claim 22, characterized in that The determining, according to the first concentration, whether to send first indication information to the first communication device includes: Determine not to send the first indication information to the first communication device according to the following conditions: When the first concentration is less than a first concentration threshold, it is determined not to send the first indication information to the first communication device.

25. The method according to claim 22 or 23, characterized in that The first indication information is used to determine that the first communication device sends the second communication signal to the second communication device; the method further includes: receiving the first communication signal and the second communication signal from the first communication device; A second concentration of the first gas is determined based on the transmission power and the reception power of the first communication signal and the transmission power and the reception power of the second communication signal.

26. The method according to claim 25, characterized in that After receiving the first communication signal and the second communication signal from the first communication device, the method further includes: When the first concentration is less than the first concentration threshold, second indication information is sent to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time; or When the second concentration is less than the first concentration threshold, second indication information is sent to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

27. The method according to claim 25, characterized in that After receiving the first communication signal and the second communication signal from the first communication device, the method further includes: When the concentration difference between the first concentration and the second concentration is less than or equal to a second concentration threshold, second indication information is sent to the first communication device, and the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

28. The method according to claim 25, characterized in that After receiving the first communication signal and the second communication signal from the first communication device, the method further includes: Second indication information is sent to the first communication device, where the second indication information includes the first concentration and / or the second concentration.

29. The method according to any one of claims 22 to 28, characterized in that The determining the first concentration of the first gas according to the received power and the transmitted power of the first communication signal includes: The first concentration of the first gas is determined according to the transmission power of the first communication signal, the reception power of the first communication signal, the distance between the second communication device and the first communication device, and the absorption coefficient of the first gas at the frequency f1.

30. The method according to claim 29, wherein The first concentration satisfies: Among them, the M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the second communication device and the first communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal.

31. The method according to any one of claims 25 to 28, characterized in that The determining the second concentration of the first gas according to the transmission power and the reception power of the first communication signal and the transmission power and the reception power of the second communication signal includes: Determine a second concentration of the first gas on the communication link between the first communication device and the first communication device based on the transmission power of the first communication signal, the reception power of the first communication signal, the transmission power of the second communication signal, the reception power of the second communication signal, the distance between the second communication device and the first communication device, the absorption coefficient of the first gas at the frequency f1, and the absorption coefficient of the first gas at the frequency f2.

32. The method according to claim 31, characterized in that The second concentration satisfies: Among them, the M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the second communication device and the first communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second communication signal.

33. The method according to any one of claims 22 to 32, characterized in that Both f1 and f2 belong to the authorized frequency band, or f1 belongs to the authorized frequency band and f2 belongs to the unlicensed frequency band.

34. A gas concentration determination device, characterized in that: The apparatus is a first communication device, comprising: a transceiver unit, configured to send a first communication signal to a second communication device; The transceiver unit is configured to receive a first echo signal of the first communication signal, wherein the frequency of the first communication signal is f1, and the frequency f1 is for the first gas; a processing unit, configured to determine a first concentration of the first gas according to a transmission power of the first communication signal and a reception power of the first echo signal; The processing unit is configured to determine whether to send a second communication signal to the second communication device according to the first concentration.

35. The device according to claim 34, characterized in that When determining whether to send the second communication signal to the second communication device according to the first concentration, the processing unit is configured to: Determining to send a second communication signal to the second communication device according to one of the following: When the first concentration is greater than or equal to a first concentration threshold, determining to send the second communication signal to the second communication device; or, When the first concentration is less than the first concentration threshold and the second communication signal is not sent to the second communication device for more than a preset time period, it is determined to send the second communication signal to the second communication device.

36. The device according to claim 34, characterized in that When determining whether to send the second communication signal to the second communication device according to the first concentration, the processing unit is configured to: Determine not to send the second communication signal to the second communication device according to the following conditions: When the first density is less than a first density threshold, it is determined not to transmit the second communication signal to the second communication device.

37. The device according to claim 35, characterized in that The transceiver unit is configured to send the first communication signal and the second communication signal to a second communication device; The transceiver unit is configured to receive a first echo signal of the first communication signal and a second echo signal of the second communication signal, wherein the frequency of the second communication signal is f2, the frequency f2 is used for the first gas, and the absorption coefficient of the first gas at the frequency f1 is greater than the absorption coefficient of the first gas at the frequency f2; The processing unit is configured to determine the second concentration of the first gas based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, and the reception power of the second echo signal.

38. The device according to claim 37, characterized in that The processing unit is further configured to: When the first concentration is less than the first concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time; or, When the second concentration is less than the first concentration threshold, the sending of the second communication signal to the second communication device is stopped or the number of times the second communication signal is sent to the second communication device per unit time is reduced.

39. The device according to claim 37, characterized in that The processing unit is further configured to: When the concentration difference between the first concentration and the second concentration is less than or equal to a second concentration threshold, stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

40. The device according to any one of claims 37 to 39, characterized in that The number of times the first communication signal is sent within a unit time is greater than or equal to the number of times the second communication signal is sent within the unit time.

41. The device according to any one of claims 34 to 40, characterized in that When determining the first concentration of the first gas according to the transmission power of the first communication signal and the reception power of the first echo signal, the processing unit is configured to: The first concentration of the first gas is determined based on the transmission power of the first communication signal, the reception power of the first echo signal, the distance between the first communication device and the second communication device, and the absorption coefficient of the first gas at the frequency f1.

42. The device according to claim 41, characterized in that The first concentration satisfies: Among them, the M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal.

43. The device according to any one of claims 37 to 40, characterized in that When determining the second concentration of the first gas based on the transmit power of the first communication signal, the receive power of the first echo signal, the transmit power of the second communication signal, and the receive power of the second echo signal, the processing unit is configured to: Determine a second concentration of the first gas on the communication link between the second communication device and the second communication device based on the transmission power of the first communication signal, the reception power of the first echo signal, the transmission power of the second communication signal, the reception power of the second echo signal, the distance between the first communication device and the second communication device, the absorption coefficient of the first gas at the frequency f1, and the absorption coefficient of the first gas at the frequency f2.

44. The device according to claim 43, characterized in that The second concentration satisfies: Among them, the M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the first communication device and the second communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first echo signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second echo signal.

45. The device according to any one of claims 34 to 44, characterized in that Both f1 and f2 belong to the authorized frequency band, or f1 belongs to the authorized frequency band and f2 belongs to the unlicensed frequency band.

46. ​​A gas concentration determination device, characterized in that: The apparatus is a first communication device, comprising: a transceiver unit, configured to send a first communication signal to a second communication device, wherein the frequency of the first communication signal is f1, the f1 being for a first gas, and the transmit power and receive power of the first communication signal being used to determine a first concentration of the first gas; A processing unit is used to determine whether to send a second communication signal to the second communication device based on the first indication information from the second communication device, where the frequency of the second communication signal is f2, and the f2 is used for the first gas, and the absorption coefficient of the first gas at the frequency of f1 is greater than the absorption coefficient of the first gas at the frequency of f2.

47. The device according to claim 46, characterized in that The first indication information is used to instruct the first communication device to send the second communication signal to the second communication device.

48. The device according to claim 46, characterized in that The first indication information includes the first concentration.

49. The device according to any one of claims 46 to 48, characterized in that The processing unit is further configured to: The first communication signal and the second communication signal are sent to the second communication device.

50. The device according to claim 49, characterized in that The number of times the first communication signal is sent within a unit time is greater than or equal to the number of times the second communication signal is sent within the unit time.

51. The device according to claim 49 or 50, characterized in that The processing unit is further configured to: According to the second instruction information from the second communication device, it is determined to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time.

52. The device according to claim 51, characterized in that The second indication information is used to instruct to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device within a unit time.

53. The device according to claim 51, characterized in that The second indication information includes the first concentration and / or the second concentration of the first gas, where the second concentration is determined based on the transmission power and reception power of the first communication signal and the transmission power and reception power of the second communication signal.

54. The device according to any one of claims 46 to 53, characterized in that Both f1 and f2 belong to the authorized frequency band, or f1 belongs to the authorized frequency band and f2 belongs to the unlicensed frequency band.

55. A gas concentration determination device, characterized in that: The apparatus is a second communication device, comprising: a transceiver unit, configured to receive a first communication signal from the first communication device, wherein the frequency of the first communication signal is f1, and the frequency f1 is for a first gas; a processing unit, configured to determine a first concentration of the first gas based on a received power and a transmitted power of the first communication signal; the processing unit is configured to determine, based on the first concentration, whether to send first indication information to the first communication device, the first indication information being used to determine whether the first communication device sends the second communication signal to the second communication device; or The transceiver unit is configured to send first indication information to the first communication device, where the first indication information is used to determine whether the first communication device sends the second communication signal to the second communication device, and the first indication information includes the first concentration.

56. The device according to claim 55, characterized in that When determining whether to send first indication information to the first communication device according to the first concentration, the processing unit is configured to: Determining to send the first indication information to the first communication device according to one of the following: When the first concentration is greater than or equal to a first concentration threshold, determining to send the first indication information to the first communication device; or, When the first concentration is less than the first concentration threshold and the first indication information is not sent to the first communication device for more than a preset time period, it is determined to send the first indication information to the first communication device.

57. The device according to claim 55, characterized in that When determining whether to send first indication information to the first communication device according to the first concentration, the processing unit is configured to: Determine not to send the first indication information to the first communication device according to the following conditions: When the first concentration is less than a first concentration threshold, it is determined not to send the first indication information to the first communication device.

58. The device according to claim 55 or 56, characterized in that The first indication information is used to determine that the first communication device sends the second communication signal to the second communication device; The transceiver unit is further configured to receive the first communication signal and the second communication signal from the first communication device; The processing unit is further configured to determine a second concentration of the first gas based on the transmission power and the reception power of the first communication signal and the transmission power and the reception power of the second communication signal.

59. The device according to claim 58, characterized in that The processing unit is further configured to: When the first concentration is less than the first concentration threshold, sending second indication information to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or to reduce the number of times the second communication signal is sent to the second communication device per unit time; or, When the second concentration is less than the first concentration threshold, second indication information is sent to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

60. The device according to claim 58, wherein The processing unit is further configured to: When the concentration difference between the first concentration and the second concentration is less than or equal to a second concentration threshold, second indication information is sent to the first communication device, and the second indication information is used to instruct the first communication device to stop sending the second communication signal to the second communication device or reduce the number of times the second communication signal is sent to the second communication device per unit time.

61. The device according to claim 58, characterized in that The processing unit is further configured to: Second indication information is sent to the first communication device, where the second indication information includes the first concentration and / or the second concentration.

62. The device according to any one of claims 55 to 61, characterized in that When determining the first concentration of the first gas according to the received power and the transmitted power of the first communication signal, the processing unit is configured to: The first concentration of the first gas is determined according to the transmission power of the first communication signal, the reception power of the first communication signal, the distance between the second communication device and the first communication device, and the absorption coefficient of the first gas at the frequency f1.

63. The device according to claim 62, characterized in that The first concentration satisfies: Among them, the M A represents the first concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, L represents the distance between the second communication device and the first communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal.

64. The device according to any one of claims 58 to 61, characterized in that When determining the second concentration of the first gas based on the transmit power and receive power of the first communication signal and the transmit power and receive power of the second communication signal, the processing unit is configured to: Determine a second concentration of the first gas on the communication link between the first communication device and the first communication device based on the transmission power of the first communication signal, the reception power of the first communication signal, the transmission power of the second communication signal, the reception power of the second communication signal, the distance between the second communication device and the first communication device, the absorption coefficient of the first gas at the frequency f1, and the absorption coefficient of the first gas at the frequency f2.

65. The device according to claim 64, characterized in that The second concentration satisfies: Among them, the M AB represents the second concentration, σ(f1) represents the absorption coefficient of the first gas at the frequency f1, σ(f2) represents the absorption coefficient of the first gas at the frequency f2, L represents the distance between the second communication device and the first communication device, P A0 (f1) represents the transmission power of the first communication signal, P A (f1) represents the received power of the first communication signal, P B0 (f1) represents the transmission power of the second communication signal, P A (f1) represents the received power of the second communication signal.

66. The device according to any one of claims 55 to 65, characterized in that Both f1 and f2 belong to the authorized frequency band, or f1 belongs to the authorized frequency band and f2 belongs to the unlicensed frequency band.

67. A communication device, characterized in that The communication device includes a processor and a storage medium, wherein the storage medium stores instructions. When the instructions are executed by the processor, the method according to any one of claims 1 to 12 is implemented, or the method according to any one of claims 13 to 21 is implemented, or the method according to any one of claims 22 to 33 is implemented.

68. A computer-readable storage medium, characterized in that The computer-readable storage medium comprises instructions, which, when executed by a processor, enable the method according to any one of claims 1 to 12 to be implemented, or enable the method according to any one of claims 13 to 21 to be implemented, or enable the method according to any one of claims 22 to 33 to be implemented.

69. A computer program product, characterized in that The computer program product comprises instructions, which, when executed by a processor, enable the method according to any one of claims 1 to 12 to be implemented, or enable the method according to any one of claims 13 to 21 to be implemented, or enable the method according to any one of claims 22 to 33 to be implemented.

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