A radio frequency signal strength adjustment method, device and elevator bridge equipment

Abstract

This application provides a method, apparatus, and elevator bridge device for adjusting radio frequency (RF) signal strength. The method includes: monitoring the signal strength value of an RF signal received by the elevator bridge device at an RF signal receiving end; determining whether the signal strength value is greater than a first signal strength threshold; and if so, transmitting the RF signal to an RF device via RF coupling, wherein the signal strength coupled to the RF device is less than or equal to the first signal strength threshold. This application, after detecting that the signal strength value of the RF signal received by the elevator bridge device at an RF signal receiving end is greater than the first signal strength threshold, transmits the RF signal to the RF device via RF coupling, ensuring that the signal strength coupled to the RF device is less than or equal to the first signal strength threshold. This reduces the RF signal strength transmitted to the RF device, keeping the signal strength value within the optimal level range that the RF device can receive, thereby improving the reliability of signal transmission in the elevator bridge device.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method, apparatus and elevator bridge device for adjusting radio frequency signal strength. Background Technology

[0002] A wireless bridge, as the name suggests, is a bridge for wireless networks. It uses wireless transmission to establish a communication bridge between two or more networks, thus enabling the construction of a wireless network. Wireless bridges are commonly used in wireless surveillance, information system bridging, elevator monitoring, and field monitoring—locations where cabling is not feasible.

[0003] Elevator bridges are widely used in elevator monitoring, security, and short-range data communication. The radio frequency (RF) receiving parameters of an elevator bridge have a significant impact on signal transmission. When the elevator reaches the top, the signal strength is high. Since the RF components within the elevator bridge have a maximum received signal strength threshold, if the received signal strength exceeds this threshold, the RF components cannot successfully identify the signal. This can lead to RF signal reception blockage, affecting RF signal transmission and causing video monitoring lag within the elevator. Summary of the Invention

[0004] This application provides a method, apparatus, and elevator bridge device for adjusting radio frequency signal strength, which can improve the reliability of signal transmission in elevator bridge devices.

[0005] In a first aspect, embodiments of this application provide a signal strength adjustment method, applied to elevator network bridge equipment, comprising:

[0006] Monitor the signal strength value of the radio frequency signal received by the elevator bridge equipment at the radio frequency signal receiving end;

[0007] Determine whether the signal strength value is greater than a first signal strength threshold;

[0008] If so, the radio frequency signal is transmitted to the radio frequency device in a radio frequency coupling manner, wherein the signal strength coupled to the radio frequency device is less than or equal to the first signal strength threshold.

[0009] Optionally, the elevator bridge device includes a coupling module, which is a module connected between the radio frequency signal receiving end and the radio frequency device;

[0010] The step of transmitting the radio frequency signal to the radio frequency device via radio frequency coupling includes:

[0011] The radio frequency signal is transmitted to the radio frequency device via the coupling module in a radio frequency coupling manner.

[0012] Optionally, the coupling module includes a radio frequency switch and a first resistor, wherein the input terminal of the radio frequency switch is connected to the radio frequency signal receiving terminal;

[0013] The step of transmitting the radio frequency signal to the radio frequency device via the coupling module in a radio frequency coupling manner includes:

[0014] The radio frequency switch is controlled to switch from the first conducting terminal to the second conducting terminal; the first conducting terminal of the radio frequency switch is connected to the radio frequency device, and the second conducting terminal of the radio frequency switch is connected to the ground point through the first resistor.

[0015] Optionally, after the control radio frequency switch switches from the first conducting terminal to the second conducting terminal, it further includes:

[0016] If the signal strength value is determined to be less than or equal to the second signal strength threshold, then the radio frequency switch is controlled to switch from the second conducting terminal to the first conducting terminal.

[0017] Optionally, if there are multiple elevator bridge devices, the method further includes:

[0018] For any given elevator bridge device, monitor the negotiation rate value of the elevator bridge device;

[0019] At least two target elevator bridge devices are determined based on the negotiated rate value;

[0020] The operating channels of the at least two target elevator bridge devices are switched based on preset channel allocation rules.

[0021] Optionally, determining at least two target elevator bridge devices based on the negotiated rate value includes:

[0022] If the negotiation rate values ​​of at least two elevator bridge devices are all less than the negotiation rate threshold, then the at least two elevator bridge devices are determined to be target elevator bridge devices.

[0023] Optionally, switching the working channels of the at least two target elevator bridge devices based on preset channel allocation rules includes:

[0024] Each target elevator bridge device is assigned a working channel with a different frequency so that each target elevator bridge device can switch according to the assigned working channel.

[0025] Secondly, embodiments of this application also provide a radio frequency signal strength adjustment device, comprising:

[0026] The monitoring unit is used to monitor the signal strength value of the radio frequency signal received by the elevator bridge equipment at the radio frequency signal receiving end;

[0027] The judgment unit is used to determine whether the signal strength value is greater than the first signal strength threshold.

[0028] A coupling unit is used to transmit the radio frequency signal to a radio frequency device in a radio frequency coupling manner when the signal strength value is greater than the first signal strength threshold, wherein the signal strength coupled to the radio frequency device is less than or equal to the first signal strength threshold.

[0029] Optionally, the elevator bridge device includes a coupling module, which is a module connected between the radio frequency signal receiving end and the radio frequency device;

[0030] The coupling unit is specifically used for:

[0031] The radio frequency signal is transmitted to the radio frequency device via the coupling module in a radio frequency coupling manner.

[0032] Optionally, the coupling module includes a radio frequency switch and a first resistor, wherein the input terminal of the radio frequency switch is connected to the radio frequency signal receiving terminal;

[0033] The coupling unit is specifically used for:

[0034] The radio frequency switch is controlled to switch from the first conducting terminal to the second conducting terminal; the first conducting terminal of the radio frequency switch is connected to the radio frequency device, and the second conducting terminal of the radio frequency switch is connected to the ground point through the first resistor.

[0035] Optionally, the coupling unit is further configured to:

[0036] If the signal strength value is determined to be less than or equal to the second signal strength threshold, then the radio frequency switch is controlled to switch from the second conducting terminal to the first conducting terminal.

[0037] Optionally, if there are multiple elevator network bridge devices, the monitoring unit is further used for:

[0038] For any given elevator bridge device, monitor the negotiation rate value of the elevator bridge device;

[0039] The determination unit is also used to: determine at least two target elevator bridge devices based on the negotiated rate value; and switch the working channels of the at least two target elevator bridge devices based on a preset channel allocation rule.

[0040] Optionally, the determination unit is specifically used for:

[0041] If the negotiation rate values ​​of at least two elevator bridge devices are all less than the negotiation rate threshold, then the at least two elevator bridge devices are determined to be target elevator bridge devices.

[0042] Optionally, the determination unit is specifically used for:

[0043] Each target elevator bridge device is assigned a working channel with a different frequency so that each target elevator bridge device can switch according to the assigned working channel.

[0044] Thirdly, embodiments of this application also provide an elevator network bridge device, including a memory and a processor;

[0045] The memory is used to store instructions;

[0046] The processor is configured to execute instructions stored in the memory, and when the processor executes the instructions stored in the memory, it causes the elevator bridge device to perform the method as described in any of the first aspects.

[0047] Fourthly, embodiments of this application also provide a computer storage medium storing instructions that, when executed on a computer, cause the computer to perform the method described in any of the first aspects.

[0048] Fifthly, embodiments of this application also provide an elevator network bridge system, including a first elevator network bridge device and a second elevator network bridge device;

[0049] The first elevator bridge device is used to send radio frequency signals to the second elevator bridge device;

[0050] The second elevator bridge device is used to receive the radio frequency signal. When the signal strength of the radio frequency signal is greater than the first signal strength threshold, the radio frequency signal is transmitted to the radio frequency device in the second elevator bridge device by radio frequency coupling, wherein the signal strength coupled to the radio frequency device is less than or equal to the first signal strength threshold.

[0051] This application provides a method, apparatus, and elevator bridge device for adjusting radio frequency (RF) signal strength. The RF signal strength adjustment method includes: monitoring the signal strength value of an RF signal received by the elevator bridge device at its RF signal receiving end; determining whether the signal strength value is greater than a first signal strength threshold; and if so, transmitting the RF signal to an RF device via RF coupling, wherein the signal strength coupled to the RF device is less than or equal to the first signal strength threshold. This application, after detecting that the signal strength value of the RF signal received by the elevator bridge device at its RF signal receiving end is greater than the first signal strength threshold, transmits the RF signal to the RF device via RF coupling, ensuring that the signal strength coupled to the RF device is less than or equal to the first signal strength threshold. This reduces the RF signal strength transmitted to the RF device, keeping the signal strength value within the optimal level range that the RF device can receive, thereby improving the reliability of signal transmission in the elevator bridge device. Attached Figure Description

[0052] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of the layout of an elevator network bridge in related technologies;

[0054] Figure 2 A schematic block diagram of an elevator network bridge device provided in this application embodiment;

[0055] Figure 3 A circuit structure diagram of an elevator network bridge device provided in this application embodiment;

[0056] Figure 4 A schematic diagram of a multi-channel radio frequency switch provided in an embodiment of this application;

[0057] Figure 5 A flowchart illustrating a radio frequency signal strength adjustment method provided in an embodiment of this application;

[0058] Figure 6 A schematic diagram of a high-density layout of an elevator network bridge is provided in an embodiment of this application;

[0059] Figure 7a This is a schematic diagram showing the frequency correspondence of various channels in the 2.4G technology.

[0060] Figure 7b This is a schematic diagram showing the frequency correspondence of various 5G channels in related technologies;

[0061] Figure 8 This is a schematic diagram of the structure of a radio frequency signal strength adjustment device provided in an embodiment of this application;

[0062] Figure 9 This is a structural schematic diagram of an elevator network bridge device provided in an embodiment of this application. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art are within the scope of protection of this application.

[0064] The installation environment for elevator network bridges is relatively complex, and the distance between the network bridge devices is difficult to control during installation. For example... Figure 1 The diagram shows a layout of an elevator bridge in related technologies. The elevator bridge includes a Wireless Access Point (AP) and a Customer Premise Equipment (CPE). APs and CPEs exist in pairs, one-to-one. Since the structures of APs and CPEs are identical, their roles can be interchanged. Typically, the AP is installed at the top of the elevator shaft, and the CPE is installed at the top of the elevator car. The AP and CPE transmit and receive signals from each other. As the elevator car ascends in the shaft, the distance between the AP and CPE decreases, and the signal strength increases. The signal strength is greatest when the elevator car reaches the top. Because the installation distance between the AP and CPE in the elevator shaft is uncertain, if the installers install them too close, the signal strength during the elevator car's ascent may become too high, exceeding the maximum signal strength threshold of the RF devices in the AP or CPE. This can cause the RF devices in the elevator bridge equipment (AP and CPE) to become blocked when receiving RF signals, affecting the transmission of RF signals and resulting in video surveillance lag in the elevator.

[0065] To address the aforementioned issues, this application provides a method for adjusting radio frequency signal strength. This application adds a coupling module to the elevator bridge and monitors the signal strength in real time. When the signal strength exceeds the optimal receiving level of the radio frequency device, the coupling module is pulled to the ground. Through the radio frequency coupling function of the coupling module itself, the signal strength received by the radio frequency device is kept within the optimal level range.

[0066] like Figure 2 The diagram shown is a schematic block diagram of an elevator bridge device provided in an embodiment of this application. A coupling module is connected in series between the radio frequency signal receiver and the radio frequency devices. Under normal conditions, the coupling module is connected in series with radio frequency devices such as a low noise amplifier (LNA), a power amplifier (PA), a radio frequency front-end module (FEM), and a MAC baseband chip. Figure 2The coupling module will switch to the ground point after the central processing unit (CPU) outputs the corresponding control signal (marked as LNA / PA / FEM / MAC).

[0067] After the aforementioned coupling module switches to the ground point, due to its own RF coupling function, the RF signal can still be transmitted to the receiver of devices such as LNA / PA / FEM / MAC, and the level will be reduced by about 20dB, for example, between 15dB and 25dB. The specific reduction in level is achieved by the first resistor inside the coupling module of this application. By changing the resistance value of the first resistor, the reduced signal strength value can be adjusted. If the resistance value of the first resistor is 0, the reduced level value is the minimum, which is 15dB. Increasing the resistance value of the first resistor will increase the reduced level value, but the maximum will not exceed 25dB. The resistance value of the first resistor can be set according to the actual situation. The reduced level value can meet the signal input of RF devices and prevent blocking.

[0068] The coupling module in this application may include a radio frequency switch and a first resistor. It is worth noting that, in addition to the radio frequency switch, any device that can achieve radio frequency coupling is acceptable, such as a programmable diode, a programmable resistor, etc.

[0069] like Figure 3The diagram shown is a circuit structure schematic of an elevator network bridge device provided in an embodiment of this application. RX_IN is the radio frequency (RF) signal receiver, which is the antenna input and is mainly used to receive RF signals. C1 / C2 / C3 form a π-type capacitor filter, typically placed near the antenna feed line. C4 / R2 / C5 form a π-type CRC filter, typically placed near the RF switch. C6 is a coupling capacitor that couples the RF signal to the RF switch input. Control... Input is the CPU control signal output terminal, normally high level, and low level when the RF switch needs to be controlled. The RF switch can be a control device such as a switch or RF analog switch. The selected RF switch has a wide operating frequency range. In bridge WiFi signals, the signal frequency is usually 2.4GHz~2.4835GHz or 5.15GHz~5.85GHz. One of these frequencies is selected for bridge use. The selected RF switch has low insertion loss, good isolation, and fast switching response speed. The first resistor R3 is connected to the second conducting terminal (normally open terminal) of the RF switch. When the RF switch is activated, its signal is connected to this terminal. Adjusting the value of the first resistor R3 can control the strength of the coupling signal at the first conducting terminal (normally closed terminal) of the RF switch. Normally, the first resistor R3 is set to... With a 0Ω resistor, the coupling signal strength at the back end is at its maximum. Increasing the value of the first resistor R3 reduces the coupling signal strength at the back end. The first conducting terminal of the RF switch forms a capacitor π-type filter circuit through C7 / C8 / C9 to filter out spurious interference caused by the RF switch and other front-end circuits. The RX_OUT output terminal is connected to the subsequent circuit, which includes RF devices such as LNA / PA / FEM / MAC. The RF devices are used to process the received RF signal, such as amplification. If the RF signal strength received by the RF device is too high, it will cause the RF device to block reception. Therefore, when the RF signal strength received by the RF signal receiving terminal RX_IN is too high, it is necessary to reduce the RF signal strength to ensure that the RF signal strength output by RX_OUT is reduced, so that the RF signal strength input to the RF device will not cause the RF device to block reception.

[0070] It's worth noting that in practical applications, for an elevator bridge device (AP or CPE), there are often multiple received signals in the WiFi RF link, which can be switched using multiple RF switches, such as... Figure 4 As shown, the received RF signal strength and the control process of the RF switch are completely consistent for each channel.

[0071] The radio frequency signal strength adjustment method provided in the embodiments of this application will be described below.

[0072] like Figure 5As shown, this application provides a method for adjusting the radio frequency signal strength, applied to elevator network bridge equipment. The method includes the following steps:

[0073] S501. Monitor the signal strength value of the radio frequency signal received by the elevator bridge equipment at the radio frequency signal receiving end;

[0074] S502. Determine whether the signal strength value is greater than the first signal strength threshold; if so, send the radio frequency signal to the radio frequency device in a radio frequency coupling manner, wherein the signal strength coupled to the radio frequency device is less than or equal to the first signal strength threshold.

[0075] The radio frequency (RF) signal strength adjustment method provided in this application first monitors the signal strength value of the RF signal received by the elevator bridge device at the RF signal receiving end. Then, it determines whether the signal strength value is greater than a first signal strength threshold. If so, the RF signal is transmitted to the RF device via RF coupling, wherein the signal strength coupled to the RF device is less than or equal to the first signal strength threshold. By detecting that the signal strength value of the RF signal received by the elevator bridge device at the RF signal receiving end is greater than the first signal strength threshold, this application transmits the RF signal to the RF device via RF coupling, ensuring that the signal strength coupled to the RF device is less than or equal to the first signal strength threshold. This reduces the RF signal strength transmitted to the RF device, keeping the signal strength value within the optimal level range that the RF device can receive, thereby improving the reliability of signal transmission in the elevator bridge device.

[0076] The first signal strength threshold can be set according to the maximum level that the radio frequency device can receive. For example, if the maximum level of the signal strength that the radio frequency device can receive is -10dB, and signal blocking may occur after exceeding -10dB, then the signal strength threshold can be set to -10dB.

[0077] In practical implementation, elevator network bridge equipment may include coupling modules, such as... Figure 2 As shown, the coupling module is a module connected between the radio frequency signal receiver and the radio frequency device. In this embodiment, the radio frequency signal is transmitted to the radio frequency device through the coupling module in a radio frequency coupling manner.

[0078] Specifically, such as Figure 3 As shown, the coupling module may include an RF switch and a first resistor R3. The input terminal of the RF switch is connected to the RF signal receiving terminal RX_IN, the first conducting terminal of the RF switch is connected to the RF device (RX_OUT is connected to the RF device), and the second conducting terminal of the RF switch is connected to the ground point GND through the first resistor R3.

[0079] The radio frequency signal is sent to the radio frequency device through the coupling module in a radio frequency coupling manner. Specifically, the radio frequency switch is controlled to switch from the first conducting terminal to the second conducting terminal.

[0080] By controlling the RF switch to switch from the first conducting terminal to the second conducting terminal, the RF coupling function of the RF switch itself can be used to reduce the signal strength received by the RF device, so that the signal strength value is within the optimal level range.

[0081] In specific implementation, after the RF switch is switched from the first conducting terminal to the second conducting terminal, if it is determined that the signal strength value is less than or equal to the second signal strength threshold, the RF switch is switched from the second conducting terminal to the first conducting terminal.

[0082] The second signal strength threshold can also be set according to the actual situation. For example, it can be set to -40dB. If the elevator detects a signal strength value of -9dB (greater than -10dB) at a certain position during its ascent, the CPU controls the RF switch to switch from the first conducting terminal to the second conducting terminal, and the signal strength value decreases to -34dB. As the elevator rises, the signal strength value continues to increase, but it generally will not rise above -10dB again. Then the elevator descends, and the signal strength value decreases. When the detected signal strength value is less than or equal to -40dB, the RF switch is controlled to switch back from the second conducting terminal to the first conducting terminal, thereby ensuring the quality of the RF signal and avoiding communication failure due to excessively low RF signal strength.

[0083] In practical implementation, this application can also connect light-emitting diodes (LEDs) to the CPU's input / output (IO) ports to indicate signal strength and communication status. For example, the LEDs can be controlled to turn on and off via the CPU's IO ports. A green LED illuminates when the bridge communication negotiation rate is higher than a negotiation rate threshold and the signal strength is less than or equal to a first signal strength threshold; otherwise, a red LED illuminates.

[0084] It is worth noting that the radio frequency signal strength adjustment method provided in this application embodiment can be applied to any device in the elevator bridge. For example, it can be applied solely to the CPE end, solely to the AP end, or simultaneously to both the AP end and the CPE end. As an example, if applied solely to the AP end, the CPE end collects video data from inside the elevator car and sends the signal to the AP end. Then, the AP end uses the radio frequency signal strength adjustment method provided in this application embodiment to adjust the signal strength, ensuring that the radio frequency devices within the AP end do not cause reception blockage. In fact, the structures of the AP end and the CPE end are the same, and their roles can be interchanged.

[0085] In practical implementation, a system may contain multiple pairs of elevator bridge devices, i.e., a high-density layout, such as... Figure 6 The diagram shows a high-density layout of elevator bridges. AP1 and CPE1 are a pair of bridges in one elevator shaft, extending to Apn and CPEn, where n≥2. In this layout, at least two pairs of bridges may use channels with similar frequencies, causing mutual interference.

[0086] This application connects AP1, AP2...APn to an AC controller (which can be a switch or gateway) and monitors the working status of the bridges through cloud services. The cloud displays the status of the bridges in the entire area, detects the current number of bridge pairs, and then displays the negotiation and interference status between each pair of bridges. For bridges that are interfered with, the channel is staggered. After staggering, the status between each pair of bridges is monitored again. If the interference problem is resolved, the process ends, and the bridge deployment is completed.

[0087] In practical implementation, if there are multiple elevator bridge devices (taking AP as an example), the negotiation rate value of any one elevator bridge device is monitored; for example, there are a total of 4 APs (AP1, AP2, AP3, AP4), where the negotiation rate value of AP1 is 600Mbps, the negotiation rate value of AP2 is 600Mbps, the negotiation rate value of AP3 is 1200Mbps, and the negotiation rate value of AP4 is 1200Mbps.

[0088] Then, at least two target elevator bridge devices are determined based on the negotiated rate values. Specifically, if the negotiated rate values ​​of at least two elevator bridge devices are both less than the negotiated rate threshold, then at least two elevator bridge devices are determined as target elevator bridge devices. For example, if the negotiated rate threshold is set to 1200Mbps, a value lower than 1200Mbps indicates that the signal transmission is interfered with. In this case, the negotiated rate values ​​of AP1 and AP2 are both less than 1200Mbps, indicating that there is interference between AP1 and AP2.

[0089] Finally, the working channels of at least two target elevator bridge devices are switched based on preset channel allocation rules; specifically, each target elevator bridge device can be assigned a working channel with a different frequency so that each target elevator bridge device can switch according to the assigned working channel.

[0090] As an illustration, such as Figure 7aThe diagram illustrates the frequency correspondence of various channels in the 2.4G spectrum. There are 13 channels in total, each with a different center frequency, increasing sequentially from channel 1 to channel 13. For example, channels 1-7 can be grouped into one group (the first channel group), and channels 8-13 into another group (the second channel group). If interference exists between AP1 and AP2, their channels can be staggered. This involves controlling AP1 to switch to any channel in the first channel group and controlling AP2 to switch to any channel in the second channel group, thus staggering the channels between AP1 and AP2 and resolving the interference issue. After the switching is complete, the negotiation rate of each AP continues to be monitored. If mutually interfering APs are detected again, the channel staggering process continues until the interference problem is resolved.

[0091] As another illustration, such as Figure 7b The diagram shows the frequency correspondence of various 5G channels in related technologies. Since wireless bridge devices can operate on any channel of 2.4G and 5G, the 5G channels can also be grouped. For example, channels 36-64 can be grouped as the third channel group, channels 100-140 as the fourth channel group, and channels 149-165 as the fifth channel group.

[0092] The specific grouping method can be determined based on the actual number of elevator bridge devices. The general grouping principle is to group them according to the magnitude of the center frequency so that the elevator bridge devices that are interfered with can have their channels staggered.

[0093] The radio frequency signal strength adjustment method provided in this application embodiment can effectively solve the radio frequency reception blockage that occurs when elevator bridges are close together; and it can effectively solve the interference between devices in high-density scenarios with multiple bridges; in addition, elevator bridges can be installed without worrying about being too close together, thereby reducing the installation time.

[0094] This application embodiment also provides an elevator network bridge system, including a first elevator network bridge device and a second elevator network bridge device;

[0095] The first elevator bridge device is used to send radio frequency signals to the second elevator bridge device;

[0096] The second elevator bridge device is used to receive the radio frequency signal. When the signal strength of the radio frequency signal is greater than the first signal strength threshold, the radio frequency signal is transmitted to the radio frequency device in the second elevator bridge device by radio frequency coupling, wherein the signal strength coupled to the radio frequency device is less than or equal to the first signal strength threshold.

[0097] Based on the same concept, this application also provides a radio frequency signal strength adjustment device. The implementation of this device can refer to the implementation of the above-described method; repeated details will not be elaborated further. Figure 8 As shown, the radio frequency signal strength adjustment device includes:

[0098] The monitoring unit 801 is used to monitor the signal strength value of the radio frequency signal received by the elevator bridge equipment at the radio frequency signal receiving end;

[0099] The judgment unit 802 is used to determine whether the signal strength value is greater than the first signal strength threshold.

[0100] The coupling unit 803 is used to transmit the radio frequency signal to the radio frequency device in a radio frequency coupling manner when the signal strength value is greater than the first signal strength threshold, wherein the signal strength coupled to the radio frequency device is less than or equal to the first signal strength threshold.

[0101] Optionally, the elevator bridge device includes a coupling module, which is a module connected between the radio frequency signal receiver and the radio frequency device;

[0102] The coupling unit 803 is specifically used for:

[0103] The radio frequency signal is transmitted to the radio frequency device via the coupling module in a radio frequency coupling manner.

[0104] Optionally, the coupling module includes an RF switch and a first resistor, with the input of the RF switch connected to the RF signal receiver.

[0105] The coupling unit 803 is specifically used for:

[0106] The control RF switch switches from the first conducting terminal to the second conducting terminal; the first conducting terminal of the RF switch is connected to the RF device, and the second conducting terminal of the RF switch is connected to the ground point through the first resistor.

[0107] Optionally, the coupling unit 803 is also used for:

[0108] If the signal strength value is determined to be less than or equal to the second signal strength threshold, the RF switch is controlled to switch from the second conducting terminal to the first conducting terminal.

[0109] Optionally, if there are multiple elevator bridge devices, the monitoring unit 801 is also used for:

[0110] For any given elevator bridge device, monitor the negotiation rate value of the elevator bridge device;

[0111] The judgment unit 802 is also used to: determine at least two target elevator bridge devices based on the negotiated rate value; and switch the working channels of at least two target elevator bridge devices based on the preset channel allocation rules.

[0112] Optionally, the judgment unit 802 is specifically used for:

[0113] If the negotiation rate values ​​of at least two elevator bridge devices are both less than the negotiation rate threshold, then at least two elevator bridge devices are identified as target elevator bridge devices.

[0114] Optionally, the judgment unit 802 is specifically used for:

[0115] Each target elevator bridge device is assigned a working channel with a different frequency so that each target elevator bridge device can switch according to the assigned working channel.

[0116] Based on the same concept, this application also provides an elevator network bridge device. The implementation of this elevator network bridge device can refer to the implementation of the above-described method; repeated details will not be elaborated further. Figure 9 As shown, the elevator bridge device includes a memory 901 and a processor 902;

[0117] Memory 901 is used to store instructions;

[0118] The processor 902 is used to execute instructions stored in the memory 901. When the processor 902 executes the instructions stored in the memory 901, the device performs any of the above-mentioned radio frequency signal strength adjustment methods.

[0119] Furthermore, embodiments of this application also provide a computer storage medium storing instructions that, when executed on a computer, cause the computer to perform any of the above-mentioned methods for adjusting the radio frequency signal strength.

[0120] This application provides a method, apparatus, and elevator bridge device for adjusting radio frequency (RF) signal strength. The method includes: monitoring the signal strength value of an RF signal received by the elevator bridge device at an RF signal receiving end; determining whether the signal strength value is greater than a first signal strength threshold; and if so, transmitting the RF signal to an RF device via RF coupling, wherein the signal strength coupled to the RF device is less than or equal to the first signal strength threshold. This application, after detecting that the signal strength value of the RF signal received by the elevator bridge device at an RF signal receiving end is greater than the first signal strength threshold, transmits the RF signal to the RF device via RF coupling, ensuring that the signal strength coupled to the RF device is less than or equal to the first signal strength threshold. This reduces the RF signal strength transmitted to the RF device, keeping the signal strength value within the optimal level range that the RF device can receive, thereby improving the reliability of signal transmission in the elevator bridge device.

[0121] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0122] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0123] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0124] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0125] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for adjusting the strength of a radio frequency signal, applied to an elevator bridge device, characterized by, The method comprises: monitoring a signal strength value of a radio frequency signal received by the elevator bridge device at a radio frequency signal receiving end; determining whether the signal strength value is greater than a first signal strength threshold value; if yes, transmitting the radio frequency signal to a radio frequency device in a radio frequency coupling manner, wherein the signal strength coupled to the radio frequency device is less than or equal to the first signal strength threshold value; wherein the transmitting the radio frequency signal to the radio frequency device in the radio frequency coupling manner comprises: transmitting the radio frequency signal to the radio frequency device in the radio frequency coupling manner through a coupling module.

2. The method of claim 1, wherein, The coupling module comprises a radio frequency switch and a first resistor, and an input end of the radio frequency switch is connected with the radio frequency signal receiving end; The transmitting the radio frequency signal to the radio frequency device in the radio frequency coupling manner through the coupling module comprises: controlling the radio frequency switch to switch from a first conduction end to a second conduction end; the first conduction end of the radio frequency switch is connected with the radio frequency device, and the second conduction end of the radio frequency switch is connected with a ground point through the first resistor.

3. The method of claim 2, wherein, After the controlling the radio frequency switch to switch from the first conduction end to the second conduction end, the method further comprises: if it is determined that the signal strength value is less than or equal to a second signal strength threshold value, controlling the radio frequency switch to switch from the second conduction end to the first conduction end.

4. The method of claim 1, wherein, If the elevator bridge device is multiple, the method further comprises: for any one elevator bridge device, monitoring a negotiation rate value of the elevator bridge device; determining at least two target elevator bridge devices based on the negotiation rate value; switching working channels of the at least two target elevator bridge devices based on a preset channel allocation rule.

5. The method of claim 4, wherein, The determining at least two target elevator bridge devices based on the negotiation rate value comprises: if the negotiation rate values of the at least two elevator bridge devices are all less than a negotiation rate threshold value, determining that the at least two elevator bridge devices are target elevator bridge devices.

6. The method of claim 4, wherein, The switching working channels of the at least two target elevator bridge devices based on the preset channel allocation rule comprises: allocating working channels with different frequencies to each target elevator bridge device, so that each target elevator bridge device switches according to the allocated working channel.

7. A radio frequency signal strength adjustment device, characterized by, The method comprises: a monitoring unit configured to monitor a signal strength value of a radio frequency signal received by the elevator bridge device at a radio frequency signal receiving end; a determining unit configured to determine whether the signal strength value is greater than a first signal strength threshold value; a coupling unit configured to, when the signal strength value is greater than the first signal strength threshold value, transmit the radio frequency signal to a radio frequency device in a radio frequency coupling manner, wherein the signal strength coupled to the radio frequency device is less than or equal to the first signal strength threshold value; wherein the coupling unit is specifically configured to transmit the radio frequency signal to the radio frequency device in the radio frequency coupling manner through a coupling module.

8. An elevator bridge device, characterized by The method comprises a memory and a processor; the memory is configured to store instructions; the processor is configured to execute the instructions stored in the memory, so that the elevator bridge device executes the method according to any one of claims 1-6.

9. A computer storage medium, characterized in that The computer storage medium stores instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-6.

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