Wireless sensor powered by wireless radio frequency and wireless sensor charging method

Abstract

The invention discloses a wireless sensor powered by wireless radio frequency and a wireless sensor charging method, relates to the technical field of wireless radio frequency charging and wireless sensors, and mainly aims at solving the problems that an existing wireless sensor is limited in use scene and low in applicability. The wireless sensor mainly comprises a wireless communication concentrator, a wireless radio frequency charging module and a wireless sensor body, the wireless communication concentrator is used for continuously transmitting a first wireless radio frequency signal; the wireless radio frequency charging module is used for receiving the first wireless radio frequency signal, converting the first wireless radio frequency signal into electric energy and supplying power to the wireless sensor body; and the wireless sensor body is used for collecting wireless sensing data and transmitting the wireless sensing data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensing data to a target terminal. Therefore, the wireless power supply of the wireless sensor is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless radio frequency charging and wireless sensor technology, and in particular to a wireless sensor based on wireless radio frequency power supply and a wireless sensor charging method. Background Art

[0002] Wireless sensors are intelligent devices that integrate sensing, processing and communication functions. They can transmit the measured environmental parameter data to receivers or other devices through wireless communication technology. They are widely used in environmental monitoring, smart homes, smart transportation, industrial manufacturing and medical health. As a power-consuming device, the power supply method of wireless sensors is also an important factor that determines their performance and environmental applicability.

[0003] At present, the power supply methods of existing wireless sensors mainly include built-in batteries and CT induction power. Among them, wireless sensors with built-in batteries have the problems of short service life and high operation and maintenance costs due to the limitation of battery capacity. Although CT induction power supply solves the problems of short service life and high operation and maintenance costs, it needs to rely on nearby power resources, and has high requirements for the wiring space and power resource configuration near the use environment. It can only be used in a few scenarios, resulting in low applicability of wireless sensors. Summary of the invention

[0004] In view of this, the present invention provides a wireless sensor powered by wireless radio frequency and a wireless sensor charging method, the main purpose of which is to solve the problem that the use scenarios of existing wireless sensors are limited and the applicability is low.

[0005] According to one aspect of the present invention, a wireless sensor powered by wireless radio frequency is provided, comprising: a wireless communication concentrator, a wireless radio frequency charging module and a wireless sensor body;

[0006] The wireless communication concentrator is used to continuously transmit a first wireless radio frequency signal;

[0007] The wireless radio frequency charging module is used to receive the first wireless radio frequency signal, convert the first wireless radio frequency signal into electrical energy, and supply power to the wireless sensor body;

[0008] The wireless sensor body is used to collect wireless sensor data and transmit the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal;

[0009] The transmission frequencies of the first wireless radio frequency signal and the second wireless radio frequency signal are different.

[0010] Furthermore, the wireless radio frequency charging module includes a wireless radio frequency charging circuit and a power storage management circuit;

[0011] The output end of the wireless RF charging circuit is connected to the input end of the power storage management circuit, and is used to receive the first wireless RF signal, convert the first wireless RF signal into a direct current signal, and transmit the direct current signal to the power storage management circuit to charge the capacitor in the power storage management circuit;

[0012] The output end of the power storage management circuit is connected to the power supply input end of the wireless sensor body, and is used to supply power to the wireless sensor body after the power of the capacitor meets the preset power threshold, so that the wireless sensor body is powered, and when the voltage value of the capacitor is less than the preset voltage threshold, stop supplying power to the wireless sensor body, so that the wireless sensor body loses power;

[0013] The wireless sensor body is specifically used to collect wireless sensor data after being powered, and transmit the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal.

[0014] Furthermore, the wireless radio frequency charging circuit includes an antenna group, and the signal receiving frequency of the antenna group is equal to the signal frequency of the first wireless radio frequency signal;

[0015] The number of antennas in the antenna group is greater than or equal to 6, and the arrangement phase angles of any two antennas in the antenna group are different.

[0016] Furthermore, the number of antennas in the antenna group is 6, and the antennas in the antenna group are arranged in a hexagonal sphere.

[0017] Furthermore, the power storage management circuit also includes a switch circuit;

[0018] The capacitor is specifically used to receive the DC signal and charge it;

[0019] The capacitor is connected to the power supply input end of the wireless sensor body through the switch circuit. When the charge of the capacitor is greater than or equal to the preset charge threshold, the switch circuit is turned on, and the capacitor supplies power to the wireless sensor body; when the voltage of the capacitor is less than the preset voltage threshold, the switch circuit is disconnected, the capacitor does not supply power to the wireless sensor body, and is charged.

[0020] Furthermore, the wireless sensor body includes: a microprocessor, a sensor chip and a wireless radio frequency data transmission unit;

[0021] The sensor chip is connected to the microprocessor, the microprocessor is connected to the wireless radio frequency data transmission unit, and the wireless radio frequency charging module supplies power to the microprocessor and the sensor chip respectively;

[0022] The sensor chip is used to collect initial wireless sensing data when powered, and send the initial wireless sensing data to the microprocessor;

[0023] The microprocessor is used to perform format conversion processing on the initial wireless sensor data to obtain wireless sensor data when powered, and forward the wireless sensor data to the wireless RF data transmission unit, so that the wireless RF data transmission unit transmits the wireless RF data to the wireless communication concentrator in the form of a second wireless RF signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal.

[0024] Furthermore, the wireless communication concentrator includes: a first antenna and a second antenna, the wireless radio frequency data transmission unit includes a third antenna, and the signal transmission frequencies of any two of the first antenna, the second antenna, and the third antenna are in different bands; the signal receiving frequency of the second antenna is the same as the signal transmission frequency of the third antenna;

[0025] The first antenna is used to continuously transmit the first wireless radio frequency signal;

[0026] The third antenna is used to transmit the second wireless radio frequency signal;

[0027] The second radio is used to receive the second wireless radio frequency signal transmitted by the third antenna, and send the second wireless radio frequency signal to the target terminal.

[0028] Furthermore, the wireless sensor data includes at least: at least one of temperature sensor data, humidity sensor data, posture sensor data, current sensor data, voltage sensor data, fault sensor data, partial discharge sensor data, water level sensor data, smoke sensor data and distribution transformer hydrogen sensor data.

[0029] According to another aspect of the present invention, a wireless sensor charging method is provided, comprising:

[0030] continuously transmitting a first wireless radio frequency signal through a wireless communication concentrator;

[0031] The wireless radio frequency charging module receives the first wireless radio frequency signal, and uses the electric energy converted from the first wireless radio frequency signal to power the wireless sensor body;

[0032] Collecting wireless sensor data through the wireless sensor body, and transmitting the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal;

[0033] The transmission frequencies of the first wireless radio frequency signal and the second wireless radio frequency signal are different.

[0034] Furthermore, the receiving of the first wireless radio frequency signal and powering the wireless sensor body with electric energy converted from the first wireless radio frequency signal includes:

[0035] Receiving the first wireless radio frequency signal through a wireless radio frequency charging circuit, converting the first wireless radio frequency signal into a direct current signal, and transmitting the direct current signal to a power storage management circuit to charge a capacitor in the power storage management circuit;

[0036] The power storage management circuit obtains the power of the capacitor, and after the power meets a preset power threshold, supplies power to the wireless sensor body, so that the wireless sensor body is powered;

[0037] The collecting of wireless sensor data by the wireless sensor body and transmitting the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal specifically includes:

[0038] After the wireless sensor body is powered, the wireless sensor body collects wireless sensor data and transmits the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal.

[0039] By means of the above technical solution, the technical solution provided by the embodiment of the present invention has at least the following advantages:

[0040] The present invention provides a wireless sensor powered by wireless radio frequency and a wireless sensor charging method. The embodiment of the present invention configures a wireless communication concentrator, a wireless radio frequency charging module and a wireless sensor body, wherein the wireless communication concentrator is used to continuously transmit a first wireless radio frequency signal; the wireless radio frequency charging module is used to receive the first wireless radio frequency signal, convert the first wireless radio frequency signal into electrical energy, and power the wireless sensor body; the wireless sensor body is used to collect wireless sensor data, and transmit the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to a target terminal. Wireless power supply of wireless sensors is realized, which greatly reduces the dependence of wireless sensors on batteries, as well as the restrictions of power supply and power supply wiring on the installation space of wireless sensors. At the same time, the accuracy of wireless sensor data collection is ensured, thereby greatly improving the applicability of wireless sensors to usage scenarios.

[0041] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0043] Figure 1 A block diagram of the structure of a wireless sensor powered by wireless radio frequency provided by an embodiment of the present invention is shown;

[0044] Figure 2 A block diagram showing the structure of another wireless sensor powered by wireless radio frequency provided by an embodiment of the present invention is shown;

[0045] Figure 3 A flow chart of a wireless sensor charging method provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0046] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0047] In view of the problem that the existing wireless sensors have limited usage scenarios and low applicability, the embodiment of the present invention provides a wireless sensor powered by wireless radio frequency, such as Figure 1 As shown, the wireless sensor includes:

[0048] Wireless communication concentrator 100, wireless radio frequency charging module 200 and wireless sensor body 300;

[0049] The wireless communication concentrator 100 is used to continuously transmit a first wireless radio frequency signal;

[0050] The wireless RF charging module 200 is used to receive the first wireless RF signal, convert the first wireless RF signal into electrical energy, and supply power to the wireless sensor body 300;

[0051] The wireless sensor body 300 is used to collect wireless sensor data and transmit the wireless sensor data to the wireless communication concentrator 100 in the form of a second wireless radio frequency signal, so that the wireless communication concentrator 100 transmits the wireless sensor data to the target terminal;

[0052] In an embodiment of the present invention, the wireless communication concentrator 100 continuously transmits a first wireless radio frequency signal to the surrounding environment. The wireless radio frequency charging module 200 is configured within the signal radiation range of the wireless communication concentrator 100. After receiving the first wireless radio frequency signal, it converts the first wireless radio frequency signal into electrical energy to supply the wireless sensor body 300, so that the wireless sensor body 300 is powered and performs wireless sensor data collection and transmission. In this process, the wireless communication concentrator 100 and the wireless radio frequency charging module 200 serve as the power supply of the wireless sensor body 300 to ensure that the wireless sensor body 300 can be powered and operated without a battery and without a power supply, so as to realize the collection of wireless sensor data and the transmission of the second wireless radio frequency signal. Among them, the transmission frequencies of the first wireless radio frequency signal and the second wireless radio frequency signal are different, that is, the first wireless radio frequency signal can only be received by the wireless radio frequency charging module 200, and the second wireless radio frequency signal used to transmit wireless sensor data can only be received by the wireless communication concentrator 100. Since the wireless RF signal used for charging and the wireless RF signal used for transmitting data use different signal bands, the two RF signals will not interfere with each other, thereby ensuring the accuracy of the wireless sensing data while ensuring the power supply of the wireless sensor body 300.

[0053] It should be noted that there is an electrical connection between the wireless RF charging module and the wireless sensor body. There is no electrical connection between the wireless communication concentrator and the wireless RF charging module and the wireless sensor body. And a wireless communication concentrator can correspond to a combination of at least one wireless RF charging module and a wireless sensor body. In the actual use of the wireless sensor, the wireless communication concentrator can be separated from the combination of the wireless RF charging module and the wireless sensor body, and the combination of the wireless RF charging module and the wireless sensor body is installed at the sensor monitoring position. Since the wireless sensor is charged by wireless RF, it does not need to be configured with a battery or wiring. Its service life is no longer restricted by the battery life, and its use location is no longer restricted by the power supply location and wiring space, which greatly improves the applicability of the wireless sensor's use scenarios.

[0054] In an embodiment of the present invention, for further explanation and limitation, as Figure 2 As shown, the wireless radio frequency charging module includes a wireless radio frequency charging circuit and a power storage management circuit;

[0055] The output end of the wireless RF charging circuit is connected to the input end of the power storage management circuit, and is used to receive the first wireless RF signal, convert the first wireless RF signal into a direct current signal, and transmit the direct current signal to the power storage management circuit to charge the capacitor in the power storage management circuit;

[0056] The output end of the power storage management circuit is connected to the power supply input end of the wireless sensor body 300, and is used to supply power to the wireless sensor body 300 after the power of the capacitor meets the preset power threshold, so that the wireless sensor body 300 is powered, and when the voltage value of the capacitor is less than the preset voltage threshold, stop supplying power to the wireless sensor body 300, so that the wireless sensor body 300 loses power;

[0057] The wireless sensor body 300 is specifically used to collect wireless sensor data after being powered, and transmit the wireless sensor data to the wireless communication concentrator 100 in the form of a second wireless radio frequency signal, so that the wireless communication concentrator 100 transmits the wireless sensor data to the target terminal.

[0058] In an embodiment of the present invention, the wireless radio frequency charging circuit includes a wire and an AC / DC conversion circuit; after the wire receives the first radio frequency signal frequency at a frequency matching the first radio frequency signal frequency, it transmits the AC signal to the AC / DC conversion circuit to convert the AC signal into a DC signal, and transmits it to the power storage management circuit to charge the capacitor in the power storage management circuit. Among them, the AC / DC conversion circuit may include a rectifier circuit and a filter circuit to convert the first radio frequency signal into a DC signal containing a high-frequency component through the rectifier circuit, and filter out the high-frequency component in the DC signal through the filter circuit to improve the stability of the DC signal. After the stored power reaches the preset power threshold, the power storage management circuit supplies power to the wireless sensor body, and continues to charge when the power does not reach the preset power threshold and when the voltage between the two poles of the capacitor is less than the preset voltage value. Among them, the preset power threshold and the preset voltage threshold can be customized according to the specific application scenario, and the embodiment of the present invention does not make specific limitations. Among them, in order to determine whether the power reaches the preset power threshold, the power of the capacitor can be calculated based on the voltage value and capacitance between the two plates of the capacitor, or it can be calculated based on the current and time flowing into the capacitor, and the embodiment of the present invention does not make specific limitations.

[0059] It should be noted that the capacitance value of the capacitor is determined based on the power required for a single operation of the wireless sensor body. That is, the power stored in the capacitor needs to meet the power required by the wireless sensor body to complete a complete working process of wireless sensor data collection and transmission. The minimum interval between two wireless sensor data collections of the wireless sensor body depends on the charging time of the capacitor from the voltage being less than the preset voltage threshold to the power reaching the preset power threshold.

[0060] In one embodiment of the present invention, for further explanation and limitation, the wireless radio frequency charging circuit includes an antenna group, and a signal receiving frequency of the antenna group is equal to a signal frequency of the first wireless radio frequency signal.

[0061] In an embodiment of the present invention, the wireless radio frequency charging circuit receives radio frequency signals through an antenna group therein, and the signal receiving frequency of each antenna in the antenna group is the same. Among them, the number of antennas in the antenna group is greater than or equal to 6, and the arrangement phase angles of any two antennas in the antenna group are different. By receiving the first wireless radio frequency signal through antennas arranged at different angles, the first wireless radio frequency signal can be received to the maximum extent, and the loss of the first wireless radio frequency signal during the signal transmission process can be avoided, so that the wireless radio frequency signal can be converted into electrical energy to the maximum extent, so as to improve energy utilization and capacitor charging speed. Preferably, in the case of six antennas, the antennas in the antenna group can be arranged in a hexagonal sphere, that is, the midpoint of the antenna is the center of the hexagonal sphere, and each antenna is arranged at a 45-degree angle in three-dimensional space. Through the above arrangement, it is possible to achieve full-range wireless radio frequency signal reception with a minimum number of antennas, thereby improving the reception rate of wireless radio frequency signals while controlling costs and antenna assembly difficulty.

[0062] In one embodiment of the present invention, for further explanation and limitation, the power storage management circuit further includes a switch circuit;

[0063] The capacitor is specifically used to receive the DC signal and charge it;

[0064] The capacitor is connected to the power supply input end of the wireless sensor body through the switch circuit. When the charge of the capacitor is greater than or equal to the preset charge threshold, the switch circuit is turned on, and the capacitor supplies power to the wireless sensor body; when the voltage of the capacitor is less than the preset voltage threshold, the switch circuit is disconnected, the capacitor does not supply power to the wireless sensor body, and is charged.

[0065] In an embodiment of the present invention, the power supply process of the capacitor to the wireless sensor body is controlled by a switch circuit, which collects the voltage and power of the capacitor, and when the power meets the preset power threshold, connects the capacitor to the power input terminal of the wireless sensor body. At this time, the capacitor supplies power to the wireless sensor body, and the wireless sensor body performs the collection and transmission of wireless sensing data. In the process of the capacitor supplying power to the wireless sensor body, if the voltage value at the two poles of the capacitor is less than the preset voltage threshold, indicating that the capacitor needs to be charged, the switch circuit cuts off the connection between the capacitor and the power input terminal of the wireless sensor body, so that the capacitor enters the charging state, and at this time, the wireless sensor body loses power. Among them, the switch circuit can specifically use a switch transistor as the core control switch, and adjust the control signal of the switch transistor with voltage and power, so as to achieve the purpose of controlling the connection state between the capacitor and the power input terminal of the wireless sensor body.

[0066] In an embodiment of the present invention, for further explanation and limitation, as Figure 2As shown, the wireless sensor body includes: a microprocessor, a sensor chip and a wireless radio frequency data transmission unit;

[0067] The sensor chip is connected to the microprocessor, the microprocessor is connected to the wireless radio frequency data transmission unit, and the wireless radio frequency charging module supplies power to the microprocessor and the sensor chip respectively;

[0068] The sensor chip is used to collect initial wireless sensing data when powered, and send the initial wireless sensing data to the microprocessor;

[0069] The microprocessor is used to perform format conversion processing on the initial wireless sensor data to obtain wireless sensor data when powered, and forward the wireless sensor data to the wireless RF data transmission unit, so that the wireless RF data transmission unit transmits the wireless RF data to the wireless communication concentrator in the form of a second wireless RF signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal.

[0070] In an embodiment of the present invention, the wireless sensor body includes: a microprocessor, a sensor chip and a wireless radio frequency data transmission unit. In the process of the wireless radio frequency charging module supplying power to the microprocessor and the sensor chip, the sensor chip collects initial wireless sensor data, the microprocessor performs format conversion on the initial wireless sensor data, and transmits the format-converted wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal through the wireless radio frequency data transmission unit, so as to transmit the wireless sensor data to the target terminal through the wireless communication concentrator, thereby realizing the feedback of the wireless sensor data. Among them, the signal transmission frequency of the wireless radio frequency data transmission unit is pre-configured and different from the signal transmission frequency of the wireless communication concentrator.

[0071] In one embodiment of the present invention, for further explanation and limitation, the wireless communication concentrator includes: a first antenna and a second antenna, the wireless radio frequency data transmission unit includes a third antenna, and the signal transmission frequencies of any two of the first antenna, the second antenna, and the third antenna are in different bands; the signal receiving frequency of the second antenna is the same as the signal transmission frequency of the third antenna;

[0072] The first antenna is used to continuously transmit the first wireless radio frequency signal;

[0073] The third antenna is used to transmit the second wireless radio frequency signal;

[0074] The second radio is used to receive the second wireless radio frequency signal transmitted by the third antenna, and send the second wireless radio frequency signal to the target terminal.

[0075] In the embodiment of the present invention, the antenna used by the wireless communication concentrator to transmit the first wireless radio frequency signal is different from the antenna used to forward the wireless sensor data, and the signal transmission frequency thereof is in a different band. By configuring two antennas with different signal transmission frequencies in the wireless communication concentrator, the influence of the continuous transmission of the first wireless radio frequency signal on the wireless sensor data transmission is effectively avoided, thereby ensuring the accuracy of the wireless sensor data transmission while achieving wireless charging.

[0076] In one embodiment of the present invention, for further explanation and limitation, the wireless sensor data includes at least: at least one of temperature sensor data, humidity sensor data, posture sensor data, current sensor data, voltage sensor data, fault sensor data, partial discharge sensor data, water level sensor data, smoke sensor data and distribution transformer hydrogen sensor data.

[0077] In the embodiment of the present invention, the wireless sensor powered by wireless radio frequency provided by the above technical solution can be applied to sensors for data collection in different fields. That is, the above wireless radio frequency power supply solution can be applied to technical transformation of existing temperature sensors, humidity sensors, attitude sensors, current sensors, voltage sensors, fault sensors, partial discharge sensors, water level sensors, smoke sensors and distribution transformer hydrogen sensors, so as to realize wireless power supply of wireless sensors. Thereby, the applicability of wireless sensors powered by wireless radio frequency in various fields is greatly improved.

[0078] The present invention provides a wireless sensor powered by wireless radio frequency. The embodiment of the present invention configures a wireless communication concentrator, a wireless radio frequency charging module and a wireless sensor body, wherein the wireless communication concentrator is used to continuously transmit a first wireless radio frequency signal; the wireless radio frequency charging module is used to receive the first wireless radio frequency signal, convert the first wireless radio frequency signal into electrical energy, and power the wireless sensor body; the wireless sensor body is used to collect wireless sensor data, and transmit the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to a target terminal. Wireless power supply of wireless sensors is realized, which greatly reduces the dependence of wireless sensors on batteries, as well as the restrictions of power supply and power supply wiring on the installation space of wireless sensors. At the same time, the accuracy of wireless sensor data collection is ensured, thereby greatly improving the applicability of wireless sensors to usage scenarios.

[0079] Furthermore, as a response to the above Figure 1 The embodiment of the present invention provides a wireless sensor charging method, such as Figure 3 As shown, the method includes:

[0080] 401. Continuously transmit a first wireless radio frequency signal through a wireless communication concentrator.

[0081] 402. Receive the first wireless radio frequency signal through a wireless radio frequency charging module, and use the electric energy converted from the first wireless radio frequency signal to power the wireless sensor body.

[0082] 403. Collect wireless sensor data through the wireless sensor body, and transmit the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal.

[0083] Furthermore, the receiving of the first wireless radio frequency signal and powering the wireless sensor body with electric energy converted from the first wireless radio frequency signal includes:

[0084] Receiving the first wireless radio frequency signal through a wireless radio frequency charging circuit, converting the first wireless radio frequency signal into a direct current signal, and transmitting the direct current signal to a power storage management circuit to charge a capacitor in the power storage management circuit;

[0085] The power storage management circuit obtains the power of the capacitor, and after the power meets a preset power threshold, supplies power to the wireless sensor body, so that the wireless sensor body is powered;

[0086] The collecting of wireless sensor data by the wireless sensor body and transmitting the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal specifically includes:

[0087] After the wireless sensor body is powered, the wireless sensor body collects wireless sensor data and transmits the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal.

[0088] The present invention provides a wireless sensor charging method. In the embodiment of the present invention, a first wireless radio frequency signal is continuously transmitted through a wireless communication concentrator; the first wireless radio frequency signal is received through a wireless radio frequency charging module, and the electric energy converted from the first wireless radio frequency signal is used to power the wireless sensor body; wireless sensor data is collected through the wireless sensor body, and the wireless sensor data is transmitted to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to a target terminal; wherein the transmission frequency of the first wireless radio frequency signal is different from that of the second wireless radio frequency signal. Wireless power supply of the wireless sensor is realized, which greatly reduces the dependence of the wireless sensor on the battery, as well as the limitation of the power supply and power supply wiring on the installation space of the wireless sensor. At the same time, the accuracy of the wireless sensor data collection is ensured, thereby greatly improving the applicability of the wireless sensor to the usage scenario.

[0089] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wireless sensor powered by wireless radio frequency, characterized in that: include: Wireless communication concentrator, wireless radio frequency charging module and wireless sensor body; The wireless communication concentrator is used to continuously transmit a first wireless radio frequency signal; The wireless radio frequency charging module is used to receive the first wireless radio frequency signal, convert the first wireless radio frequency signal into electrical energy, and supply power to the wireless sensor body; The wireless sensor body is used to collect wireless sensor data and transmit the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal; The transmission frequencies of the first wireless radio frequency signal and the second wireless radio frequency signal are different.

2. The wireless sensor according to claim 1, characterized in that: The wireless radio frequency charging module includes a wireless radio frequency charging circuit and a power storage management circuit; The output end of the wireless RF charging circuit is connected to the input end of the power storage management circuit, and is used to receive the first wireless RF signal, convert the first wireless RF signal into a direct current signal, and transmit the direct current signal to the power storage management circuit to charge the capacitor in the power storage management circuit; The output end of the power storage management circuit is connected to the power supply input end of the wireless sensor body, and is used to supply power to the wireless sensor body after the power of the capacitor meets the preset power threshold, so that the wireless sensor body is powered, and when the voltage value of the capacitor is less than the preset voltage threshold, stop supplying power to the wireless sensor body, so that the wireless sensor body loses power; The wireless sensor body is specifically used to collect wireless sensor data after being powered, and transmit the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal.

3. The wireless sensor according to claim 2, characterized in that: The wireless radio frequency charging circuit comprises an antenna group, and the signal receiving frequency of the antenna group is equal to the signal frequency of the first wireless radio frequency signal; The number of antennas in the antenna group is greater than or equal to 6, and the arrangement phase angles of any two antennas in the antenna group are different.

4. The wireless sensor according to claim 3, characterized in that: The number of antennas in the antenna group is 6, and the antennas in the antenna group are arranged in a hexagonal sphere.

5. The wireless sensor according to claim 2, characterized in that: The power storage management circuit also includes a switch circuit; The capacitor is specifically used to receive the DC signal and charge it; The capacitor is connected to the power supply input end of the wireless sensor body through the switch circuit. When the charge of the capacitor is greater than or equal to the preset charge threshold, the switch circuit is turned on, and the capacitor supplies power to the wireless sensor body; when the voltage of the capacitor is less than the preset voltage threshold, the switch circuit is disconnected, the capacitor does not supply power to the wireless sensor body, and is charged.

6. The wireless sensor according to claim 1, characterized in that: The wireless sensor body includes: a microprocessor, a sensor chip and a wireless radio frequency data transmission unit; The sensor chip is connected to the microprocessor, the microprocessor is connected to the wireless radio frequency data transmission unit, and the wireless radio frequency charging module supplies power to the microprocessor and the sensor chip respectively; The sensor chip is used to collect initial wireless sensing data when powered, and send the initial wireless sensing data to the microprocessor; The microprocessor is used to perform format conversion processing on the initial wireless sensor data to obtain wireless sensor data when powered, and forward the wireless sensor data to the wireless RF data transmission unit, so that the wireless RF data transmission unit transmits the wireless RF data to the wireless communication concentrator in the form of a second wireless RF signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal.

7. The wireless sensor according to claim 6, characterized in that: The wireless communication concentrator comprises: a first antenna and a second antenna, the wireless radio frequency data transmission unit comprises a third antenna, and the signal transmission frequencies of any two of the first antenna, the second antenna and the third antenna are in different bands; the signal receiving frequency of the second antenna is the same as the signal transmission frequency of the third antenna; The first antenna is used to continuously transmit the first wireless radio frequency signal; The third antenna is used to transmit the second wireless radio frequency signal; The second radio is used to receive the second wireless radio frequency signal transmitted by the third antenna, and send the second wireless radio frequency signal to the target terminal.

8. The wireless sensor according to any one of claims 1 to 7, characterized in that: The wireless sensor data includes at least: at least one of temperature sensor data, humidity sensor data, posture sensor data, current sensor data, voltage sensor data, fault sensor data, partial discharge sensor data, water level sensor data, smoke sensor data and distribution transformer hydrogen sensor data.

9. A wireless sensor charging method, characterized in that: include: continuously transmitting a first wireless radio frequency signal through a wireless communication concentrator; The wireless radio frequency charging module receives the first wireless radio frequency signal, and uses the electric energy converted from the first wireless radio frequency signal to power the wireless sensor body; Collecting wireless sensor data through the wireless sensor body, and transmitting the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal; The transmission frequencies of the first wireless radio frequency signal and the second wireless radio frequency signal are different.

10. The method according to claim 9, characterized in that The receiving the first wireless radio frequency signal and powering the wireless sensor body with electric energy converted from the first wireless radio frequency signal includes: Receiving the first wireless radio frequency signal through a wireless radio frequency charging circuit, converting the first wireless radio frequency signal into a direct current signal, and transmitting the direct current signal to a power storage management circuit to charge a capacitor in the power storage management circuit; The power storage management circuit obtains the power of the capacitor, and after the power meets a preset power threshold, supplies power to the wireless sensor body, so that the wireless sensor body is powered; The collecting of wireless sensor data by the wireless sensor body and transmitting the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal specifically includes: After the wireless sensor body is powered, the wireless sensor body collects wireless sensor data and transmits the wireless sensor data to the wireless communication concentrator in the form of a second wireless radio frequency signal, so that the wireless communication concentrator transmits the wireless sensor data to the target terminal.

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