Monitoring circuit of communication module

Abstract

The utility model belongs to the technical field of control circuits, and discloses a monitoring circuit of a communication module, which comprises a power conversion module, a timing module, a state monitoring module and an on-off control module, the power supply conversion module is used for providing stable electric quantity for the timing module, the state monitoring module and the on-off control module; the timing module is used for providing a time base signal for the state monitoring module; the state monitoring module is used for receiving a state signal of the communication module and a time base signal of the timing module, and outputting a control signal according to the state signal and the time base signal; and the on-off control module is used for receiving the control signal of the state monitoring module to control the on-off of the power supply of the communication module. When the on-line state of the communication module is abnormal, the communication module can be automatically powered off and restarted, so that the communication module returns to a normal working state.

Description

Technical Field

[0001] The present application relates to the technical field of control circuits, and in particular to a monitoring circuit of a communication module. Background Art

[0002] The meteorological system uses 4G wireless transmission terminal units for data transmission. The communication base stations outdoors are prone to lightning strikes or unexpected restarts, base station signals become weak, or the 4G wireless transmission terminal units run for too long, which can cause the communication module to freeze or disconnect, and other situations where data cannot be transmitted normally. Workers need to go to the site to power off and restart to restore the communication module to normal. This not only wastes manpower and material resources, but also may affect the timely transmission of observation data if not handled in time. Summary of the invention

[0003] To this end, an embodiment of the present application provides a monitoring circuit for a communication module, which can automatically power off and restart the communication module when the online status of the communication module is abnormal, so that the communication module returns to normal working state, which can reduce a lot of manpower and improve the efficiency of abnormal handling of the communication module.

[0004] The present application provides a monitoring circuit for a communication module.

[0005] The present application is realized by the following technical solution: a monitoring circuit of a communication module, applied to a communication module of a meteorological system, comprising:

[0006] Power conversion module, timing module, status monitoring module and on-off control module;

[0007] The input end of the power conversion module is connected to an external power supply, and the output end of the power conversion module is connected to a power supply port of a timing module, a power supply port of a status monitoring module, and a power supply port of an on-off control module;

[0008] The output end of the timing module is connected to the input end of the status monitoring module, the output end of the status monitoring module is connected to the input end of the on-off control module, and the output end of the on-off control module is connected to the power supply of the communication module;

[0009] The power conversion module is used to provide stable power to the timing module, the status monitoring module and the on-off control module;

[0010] The timing module is used to provide a time base signal for the status monitoring module;

[0011] The state monitoring module is used to receive the state signal of the communication module and the time base signal of the timing module, and output a control signal according to the state signal and the time base signal;

[0012] The on-off control module is used to receive the control signal of the status monitoring module to control the on-off of the power supply of the communication module.

[0013] In a preferred example of the present application, it can be further configured that the output end of the timing module is connected to the input end of the status monitoring module, including:

[0014] The output end of the timing module is connected to the first input end and the second input end of the state monitoring module.

[0015] In a preferred example of the present application, it can be further configured that the status monitoring module is used to receive the status signal of the communication module and the time base signal of the timing module, and output the control signal according to the status signal and the time base signal, including:

[0016] When the state signal is a low-level state signal, the pulses of the time base signal are counted, and after counting to a preset number of pulses, a high-level control signal is output to the on-off control module.

[0017] In a preferred example of the present application, it can be further configured that the on-off control module is used to receive the control signal of the status monitoring module to control the on-off of the power supply of the communication module, including:

[0018] When the on-off control module receives the high-level control signal from the status monitoring module, the on-off control module generates a high-level pulse signal, and based on the high-level pulse signal, controls the power of the communication module to be cut off for a preset period of time, and then restarts the power of the communication module.

[0019] In a preferred example of the present application, it can be further configured that the power conversion module includes:

[0020] Fuse F1, diode D6, resistor R1, diode D1;

[0021] One end of the fuse F1 is connected to the positive electrode of the external power supply, the other end of the fuse F1 is connected to the cathode of the diode D6 and one end of the resistor R1, the other end of the resistor R1 is connected to the cathode of the diode D1 and the output end of the power conversion module, the anode of the diode D6 is connected to the negative electrode of the external power supply and the anode of the diode D1, and the anode of the diode D6 is grounded, and the anode of the diode D1 is connected to the negative electrode of the external power supply, and the anode of the diode D1 is grounded.

[0022] In a preferred example of the present application, it can be further configured that the power conversion module also includes: a capacitor C3 and a capacitor C8, one end of the capacitor C3 is connected to the cathode of the diode D1 and one end of the capacitor C8, and the other end of the capacitor C3 is connected to the anode of the diode D1 and the other end of the capacitor C8.

[0023] In a preferred example of the present application, it can be further configured that the timing module includes: a timer U3, the eighth port of the timer U3 is connected to the output end of the power conversion module, the third port of the timer U3 is connected to the input end of the status monitoring module, and the third port is used to output a timing signal.

[0024] In a preferred example of the present application, it can be further configured that the status monitoring module includes:

[0025] Logic gate U4, counter U1, MOS tube Q2, resistor R13, resistor R5, diode D3, MOS tube Q1;

[0026] The first pin and the fifth pin of the logic gate U4 are connected to the output end of the timing module, the fourteenth pin of the logic gate U4 is connected to the output end of the power conversion module, and the fourteenth pin of the logic gate U4 is grounded, the third pin of the logic gate U4 is connected to the drain of the MOS tube Q1, the gate of the MOS tube Q1 is connected to the cathode of the diode D3 and one end of the resistor R5, the anode of the diode D3 is connected to the output end of the communication module, the other end of the resistor R5 is connected to the source of the MOS tube Q1, and the other end of the resistor R5 is grounded;

[0027] The third pin of the logic gate U4 is connected to the tenth pin of the counter U1, the sixteenth pin of the counter U1 is connected to the output end of the power conversion module, and the sixteenth pin of the counter U1 is grounded, the twelfth pin of the counter U1 is connected to the input end of the on-off control module, the drain of the MOS tube Q2 is connected to the eleventh pin of the counter U1, the gate of the counter U1 is connected to one end of the resistor R13 and the reset signal, the other end of the resistor R13 is connected to the source of the MOS tube Q2, and the other end of the resistor R13 is grounded.

[0028] In a preferred example of the present application, it can be further configured that the on-off control module includes:

[0029] Resonator U2, diode D4, diode D5, resistor R16; the seventh pin of resonator U2 is connected to the reset signal, the fifth pin of resonator U2 is connected to the output end of the status monitoring module and the anode of diode D5, the cathode of diode D5 is connected to one end of resistor R16, the other end of resistor R16 is connected to the sixth pin and the fourth pin of resonator U2, the eighth pin of resonator U2 is grounded, the cathode of diode D5 is connected to the anode of diode D4, and the cathode of diode D4 is connected to the switch of the communication module; the twelfth pin of resonator U2 is connected to the output end of the power conversion module.

[0030] In a preferred example of the present application, it can be further configured that the logic gate U4 is a NAND gate.

[0031] In summary, compared with the prior art, the beneficial effects brought about by the technical solution provided in the embodiment of the present application include at least: the monitoring circuit of the communication module proposed in the present application is applied to the communication module of the meteorological system, including: a power conversion module, a timing module, a status monitoring module and an on-off control module; the input end of the power conversion module is connected to the external power supply, and the output end of the power conversion module is connected to the power supply port of the timing module, the power supply port of the status monitoring module, and the power supply port of the on-off control module; the output end of the timing module is connected to the input end of the status monitoring module, the output end of the status monitoring module is connected to the input end of the on-off control module, and the output end of the on-off control module is connected to the power supply of the communication module; the power conversion module is used to provide stable power for the timing module, the status monitoring module and the on-off control module; the timing module is used to provide a time base signal for the status monitoring module; the status monitoring module is used to receive the status signal of the communication module and the time base signal of the timing module, and output the control signal according to the status signal and the time base signal; the on-off control module is used to receive the control signal of the status monitoring module to control the on and off of the power supply of the communication module. When the online status of the communication module is abnormal, the communication module can be automatically powered off and restarted to restore the communication module to normal working state, which can reduce a lot of manpower and improve the efficiency of abnormal handling of the communication module. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of a monitoring circuit of a communication module provided in one embodiment of the present application;

[0033] Figure 2 A schematic diagram of the structure of a power conversion module provided in one embodiment of the present application;

[0034] Figure 3 A schematic diagram of the structure of a timing module provided in yet another embodiment of the present application;

[0035] Figure 4 A schematic diagram of the structure of a status monitoring module provided in yet another embodiment of the present application;

[0036] Figure 5 A schematic diagram of the structure of an on-off control module provided in yet another embodiment of the present application.

[0037] Description of reference numerals:

[0038] Power conversion module-01, timing module-02, status monitoring module-03 and on-off control module-04. DETAILED DESCRIPTION

[0039] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] In addition, the term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application, unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In this application, the terms "first", "second", etc. are used to distinguish identical or similar items with basically the same effects and functions. It should be understood that there is no logical or temporal dependency between "first", "second", and "nth", nor is there any limitation on quantity and execution order.

[0043] The embodiments of the present application are described in further detail below in conjunction with the drawings in the specification. The monitoring circuit of the communication module proposed in the present application is applied to the communication module of the meteorological system, and is used to remotely and automatically power off and restart the communication module when data transmission abnormalities occur in the communication module, without the need for operation and maintenance personnel to go to the site to handle it, which can save a lot of manpower, material and financial resources, and can significantly improve efficiency by solving problems remotely when they are discovered. This ensures the online rate of the communication module and the timeliness of the communication module's transmission of observation data. Figure 1 FIG. 1 is a schematic diagram of the structure of the monitoring circuit of the communication module, including:

[0044] Power conversion module 01, timing module 02, status monitoring module 03 and on-off control module 04;

[0045] The input end of the power conversion module 01 is connected to the external power supply, and the output end of the power conversion module 01 is connected to the power supply port of the timing module 02, the power supply port of the state monitoring module 03, and the power supply port of the on-off control module 04; the power conversion module 01 is used to provide stable power for the timing module 02, the state monitoring module 03 and the on-off control module 04. Specifically, the power conversion module 01 converts the connected external mains power into a stable 15V output voltage to power the entire circuit. The stable power supply can increase the working life of electronic devices and reduce failures caused by power problems.

[0046] The output end of the timing module 02 is connected to the input end of the state monitoring module 03, and the timing module 02 is used to provide a time base signal for the state monitoring module 03. Specifically, the timing module 02 generates a square wave time base signal with a period of 10s, expressed as T10S, which helps to achieve precise time control.

[0047] The output end of the state monitoring module 03 is connected to the input end of the on-off control module 04. The state monitoring module 03 is used to receive the state signal of the communication module and the time base signal of the timing module 02, and output a control signal according to the state signal and the time base signal.

[0048] The output end of the on-off control module 04 is connected to the power supply of the communication module; the on-off control module 04 is used to receive the control signal of the status monitoring module 03 to control the on-off of the power supply of the communication module, thereby realizing intelligent power supply management.

[0049] The real-time monitoring circuit proposed in this application reduces the need for manual intervention through a modular structure, automatic monitoring and power-off restart mechanism. When the online status of the communication module is abnormal, the number of visits to the site by the operation and maintenance personnel is reduced. After the problem is found, it can be automatically processed remotely immediately, which improves the response speed to abnormal data transmission. Restarting the communication module in time improves the online rate of the communication module and ensures the continuity and reliability of the meteorological system.

[0050] In some embodiments, the output terminal of the timing module 02 is connected to the first input terminal and the second input terminal of the state monitoring module 03 .

[0051] In some embodiments, when the status signal of the communication module received by the status monitoring module 03 is a low-level status signal, it means that the communication module is offline, then the received time base signal of the timing module 02 is pulse counted, and after counting to a preset number of pulses, a high-level control signal is output to the on-off control module 04. Specifically, the period of the received time base signal is 10s, and the status monitoring module 03 counts the pulses of the time base signal. When 256 pulse counts are reached, that is, 256×10=2560s, the status monitoring module 03 generates a high-level control signal. When the status signal of the communication module received by the status monitoring module 03 is a high-level status signal, it means that the communication module is online, and the received time base signal of the timing module 02 is blocked.

[0052] In some embodiments, when the on-off control module 04 receives the high-level control signal from the status monitoring module 03, the on-off control module 04 generates a high-level pulse signal, and based on the high-level pulse signal, controls the power supply of the communication module to be cut off for a preset time, and then restarts the power supply of the communication module. Specifically, the on-off control module 04 generates a high-level pulse signal with a pulse width of 3s to 5s, and correspondingly controls the power supply of the communication module to be cut off for 3s to 5s, and then restores the power supply of the communication module. That is, when the high-level pulse signal is 3s, the power supply of the communication module is controlled to be cut off for 3s; when the high-level pulse signal is 4s, the power supply of the communication module is controlled to be cut off for 3s; when the high-level pulse signal is 5s, the power supply of the communication module is controlled to be cut off for 5s. It should also be explained that after the on-off control module 04 controls the communication module to complete the power off and restart, an asynchronous reset signal is generated and transmitted to the status monitoring module 03, and the status monitoring module 03 resets and initializes the pulse count, so that when the communication module is detected to be offline again, the pulse count is restarted.

[0053] like Figure 2As shown, the power conversion module 01 includes a fuse F1, a diode D6, a resistor R1, and a diode D1; one end of the fuse F1 is connected to the positive electrode VIN of the external power supply, the other end of the fuse F1 is connected to the cathode of the diode D6 and one end of the resistor R1, the other end of the resistor R1 is connected to the cathode of the diode D1 and the output end P15V of the power conversion module, the anode of the diode D6 is connected to the negative electrode GIN of the external power supply, the anode of the diode D6 is connected to the anode of the diode D1, the anode of the diode D1 is connected to the negative electrode GIN of the external power supply, and the anode of the diode D6 and the anode of the diode D1 are grounded GND. Among them, the fuse F1 is a recoverable fuse, the diode D6 is a rectifier diode, the fuse F1 and the diode D6 have the function of anti-reverse connection and overcurrent protection; the diode D1 is a voltage stabilizing diode, and the resistor R1 and the diode D1 play the role of voltage stabilization and overvoltage protection. In a specific implementation process, the fuse F1 may be a FSMD014-R fuse, the diode D6 may be a PMEG3050EP diode, and the diode D1 may be a SZMMSZ5245 diode.

[0054] In some more preferred embodiments, the power conversion module 01 further includes: a capacitor C3 and a capacitor C8, one end of the capacitor C3 is connected to the cathode of the diode D1 and one end of the capacitor C8, and the other end of the capacitor C3 is connected to the anode of the diode D1 and the other end of the capacitor C8. The capacitor C3 and the capacitor C8 constitute a power filter circuit, which helps to reduce the electromagnetic interference generated by the power conversion module.

[0055] like Figure 3As shown, the timing module 02 includes: a timer U3, the eighth port of the timer U3 is connected to the output terminal P15V of the power conversion module 01, the third port of the timer U3 is connected to the input terminal of the state monitoring module 03, and the third port is used to output a time base signal and transmit the time base signal to the state monitoring module 03. Specifically, the timing module 02 also includes a peripheral circuit of the timer U3, and the peripheral circuit includes a resistor R3, a capacitor C1, a capacitor C2 and a capacitor C4, one end of the resistor R3 is connected to the third port of the timer U3, the other end of the resistor R3 is connected to the sixth port of the timer U3 and one end of the capacitor C2, and the other end of the capacitor C2 is grounded GND; one end of the capacitor C1 is connected to the fifth port of the timer U3, the other end of the capacitor C1 is grounded GND, and one end of the capacitor C4 is connected to the eighth port of the timer U3 and the output terminal P15V of the power conversion module 01. The first port of the timer U3 is a GND port, the second port is a TRIG port, the third port is an OUT port, the fourth port is a RESET port, the fifth port is a CONT port, the sixth port is a THRES port, the seventh port is a DISCH port, and the eighth port is a VDD port. In the actual implementation process, the timer U3 can use a timer of model TLC555IDR to generate a time base square wave signal T10S with a period of 10s.

[0056] like Figure 4 As shown, the state monitoring module 03 includes: a logic gate U4, a counter U1, a MOS transistor Q2, a resistor R13, a resistor R5, a diode D3, and a MOS transistor Q1. Among them, the logic gate U4 is a NAND gate.

[0057] The first pin and the fifth pin of the logic gate U4 are connected to the output end of the timing module 02, the fourteenth pin of the logic gate U4 is connected to the output end of the power conversion module 01, and the fourteenth pin of the logic gate U4 is grounded, the third pin of the logic gate U4 is connected to the drain of the MOS tube Q1, the gate of the MOS tube Q1 is connected to the cathode of the diode D3 and one end of the resistor R5, the anode of the diode D3 is connected to the output end DCD of the communication module, the other end of the resistor R5 is connected to the source of the MOS tube Q1, and the other end of the resistor R5 is grounded. The third pin of the logic gate U4 is connected to the tenth pin of the counter U1, the sixteenth pin of the counter U1 is connected to the output end of the power conversion module, and the sixteenth pin of the counter U1 is grounded, the twelfth pin of the counter U1 is connected to the input end of the on-off control module, the drain of the MOS tube Q2 is connected to the eleventh pin of the counter U1, the gate of the counter U1 is connected to one end of the resistor R13 and the reset signal, the other end of the resistor R13 is connected to the source of the MOS tube Q2, and the other end of the resistor R13 is grounded. Specifically, the state monitoring module 03 further includes a resistor R4, a resistor R5, a resistor R9, a capacitor C16, a capacitor C7, a resistor R24, a light emitting diode LED1, a capacitor C6, a resistor R12, and a capacitor C9. One end of the resistor R4 is connected to the output terminal P15V of the power conversion module 01, the other end of the resistor R4 is connected to the second pin of the logic gate U4, one end of the resistor R5 is connected to the cathode of the diode D3, the other end of the resistor R5 is grounded, one end of the resistor R9 is connected to one end of the capacitor C16, the other end of the capacitor C16 is connected to the fourth port of the logic gate U4, the other end of the resistor R9 is grounded, and the other end of the resistor R9 is connected to the seventh port of the logic gate U4, one end of the capacitor C7 is connected to the fourteenth port of the logic gate U4, the other end of the capacitor C7 is grounded GND, one end of the resistor R24 ​​is connected to the tenth port of the logic gate U4, the other end of the resistor R24 ​​is connected to one end of the light emitting diode LED1, and the other end of the light emitting diode LED1 is connected to the output terminal P15V of the power conversion module. One end of capacitor C6 is connected to the sixteenth port of counter U1, the other end of capacitor C6 is grounded GND, one end of resistor R12 is connected to clear signal CLR0, the other end of resistor R12 is connected to one end of resistor R13, one end of capacitor C9 is connected to the eleventh port of counter U1, and the other end of capacitor C9 is connected to the drain of MOS tube Q2. In the actual implementation process, logic gate U4 can use a NAND gate of model HEF4011BT-653, counter U1 can use a counter of model MC14020BDR2G; MOS tube Q1 and MOS tube Q2 use MOS tube of model DMN3023L-7. Light-emitting diode LED1 can use model 204-10SYGD / S530-E3-L.Can be used as a status indicator light for the status monitoring module 03.

[0058] The output terminal DCD of the communication module is the signal output of whether the communication module is online. When the communication module is online, the DCD signal at the output terminal of the communication module is a high-level signal, and the signal input to the logic gate U4 by the control NMOS tube Q1 is a low-level signal. At this time, the time base signal T10S output by the timing module 02 is blocked and cannot be output to the 14-bit binary counter U1. When the communication module is offline, the DCD signal at the output terminal of the communication module is a low-level signal, and the signal input to the logic gate U4 by the control NMOS tube Q1 is a high-level signal. The time base signal T10S output by the timing module 02 is opened and output to the 14-bit binary counter U1 for pulse counting. When the count reaches 256 (about 2560 seconds, about 43 minutes), the twelfth port (i.e., port Q9) of the trigger counter U1 jumps to a high-level signal TOUT.

[0059] like Figure 5 As shown, the on-off control module 04 includes: a resonator U2, a diode D4, a diode D5, and a resistor R16; the seventh pin of the resonator U2 is connected to the reset signal, the fifth pin of the resonator U2 is connected to the output end of the state monitoring module and the anode of the diode D5, the cathode of the diode D5 is connected to one end of the resistor R16, the other end of the resistor R16 is connected to the sixth pin and the fourth pin of the resonator U2, the eighth pin of the resonator U2 is grounded, the cathode of the diode D5 is connected to the anode of the diode D4, and the cathode of the diode D4 is connected to the switch of the communication module; the twelfth pin of the resonator U2 is connected to the output end of the power conversion module. In the actual implementation process, the resonator U2 can use a resonator of model CD14538BM96; the diode D5 can use a diode of model SZMMSZ5231BT1G; the diode D4 can use a diode of model PMEG4005EH-115.

[0060] Among them, the on-off control module 04 also includes a resistor R7, a capacitor C11, a capacitor C13, a resistor R8, and a capacitor C5. One end of the resistor R7 is connected to the third port of the resonator U2, the other end of the resistor R7 is connected to one end of the capacitor C11, the other end of the capacitor C11 is connected to the first port (i.e., the first pin) of the resonator U2, one end of the capacitor C13 is connected to the output end (TOUT port) of the state monitoring module 03, the other end of the capacitor C13 is connected to the eighth port of the resonator U2, and the other end of the capacitor C13 is grounded, one end of the resistor R8 is connected to the fourth port of the resonator U2, and the other end of the resistor R8 is connected in series with the resistor R16 and the diode D4 and the switch (DTUPWC port) of the communication module. One end of the capacitor C5 is connected to the sixteenth port of the resonator U2, and the other end is grounded GND.

[0061] The on-off control module 04 mainly generates a high-level pulse signal that can control the power switch of the communication module. When the high-level signal TOUT is input to the monostable multivibrator U2, a high-level pulse signal is generated at the sixth pin of the oscillator U2. The high-level pulse width is about 3 to 5 seconds, which is used to control the power supply of the communication module to be cut off for 3 to 5 seconds and then restored to power, which plays the role of restarting the power supply of the communication module; the seventh pin of the oscillator U2 generates a low-level pulse signal, which is used to reset and initialize the 14-bit binary counter U1 so as to recalculate the number of T10S pulses of the timing module.

[0062] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the system described in the present application is divided into different functional units or modules to complete all or part of the functions described above.

Claims

1. A monitoring circuit for a communication module, characterized in that: Communication modules for meteorological systems include: Power conversion module, timing module, status monitoring module and on-off control module; The input end of the power conversion module is connected to an external power supply, and the output end of the power conversion module is connected to a power supply port of a timing module, a power supply port of a status monitoring module, and a power supply port of an on-off control module; The output end of the timing module is connected to the input end of the status monitoring module, the output end of the status monitoring module is connected to the input end of the on-off control module, and the output end of the on-off control module is connected to the power supply of the communication module; The power conversion module is used to provide stable power to the timing module, the status monitoring module and the on-off control module; The timing module is used to provide a time base signal for the status monitoring module; The state monitoring module is used to receive the state signal of the communication module and the time base signal of the timing module, and output a control signal according to the state signal and the time base signal; The on-off control module is used to receive the control signal of the status monitoring module to control the on-off of the power supply of the communication module.

2. The monitoring circuit of the communication module according to claim 1, characterized in that: The output end of the timing module is connected to the input end of the status monitoring module, including: The output end of the timing module is connected to the first input end and the second input end of the state monitoring module.

3. The monitoring circuit of the communication module according to claim 1, characterized in that: The status monitoring module is used to receive the status signal of the communication module and the time base signal of the timing module, and output a control signal according to the status signal and the time base signal, including: When the state signal is a low-level state signal, the pulses of the time base signal are counted, and after counting to a preset number of pulses, a high-level control signal is output to the on-off control module.

4. The monitoring circuit of the communication module according to claim 3, characterized in that: The on-off control module is used to receive the control signal of the status monitoring module to control the on-off of the power supply of the communication module, including: When the on-off control module receives the high-level control signal from the status monitoring module, the on-off control module generates a high-level pulse signal, and based on the high-level pulse signal, controls the power of the communication module to be cut off for a preset period of time, and then restarts the power of the communication module.

5. The monitoring circuit of the communication module according to claim 1, characterized in that: The power conversion module comprises: Fuse F1, diode D6, resistor R1, diode D1; One end of the fuse F1 is connected to the positive electrode of the external power supply, the other end of the fuse F1 is connected to the cathode of the diode D6 and one end of the resistor R1, the other end of the resistor R1 is connected to the cathode of the diode D1 and the output end of the power conversion module, the anode of the diode D6 is connected to the negative electrode of the external power supply and the anode of the diode D1, and the anode of the diode D6 is grounded, and the anode of the diode D1 is connected to the negative electrode of the external power supply, and the anode of the diode D1 is grounded.

6. The monitoring circuit of the communication module according to claim 5, characterized in that: The power conversion module further includes: a capacitor C3 and a capacitor C8, one end of the capacitor C3 is connected to the cathode of the diode D1 and one end of the capacitor C8, and the other end of the capacitor C3 is connected to the anode of the diode D1 and the other end of the capacitor C8.

7. The monitoring circuit of the communication module according to claim 1, characterized in that: The timing module includes: a timer U3, an eighth port of the timer U3 is connected to the output end of the power conversion module, a third port of the timer U3 is connected to the input end of the state monitoring module, and the third port is used to output a time base signal.

8. The monitoring circuit of the communication module according to claim 2, characterized in that: The condition monitoring module includes: Logic gate U4, counter U1, MOS tube Q2, resistor R13, resistor R5, diode D3, MOS tube Q1; The first pin and the fifth pin of the logic gate U4 are connected to the output end of the timing module, the fourteenth pin of the logic gate U4 is connected to the output end of the power conversion module, and the fourteenth pin of the logic gate U4 is grounded, the third pin of the logic gate U4 is connected to the drain of the MOS tube Q1, the gate of the MOS tube Q1 is connected to the cathode of the diode D3 and one end of the resistor R5, the anode of the diode D3 is connected to the output end of the communication module, the other end of the resistor R5 is connected to the source of the MOS tube Q1, and the other end of the resistor R5 is grounded; The third pin of the logic gate U4 is connected to the tenth pin of the counter U1, the sixteenth pin of the counter U1 is connected to the output end of the power conversion module, and the sixteenth pin of the counter U1 is grounded, the twelfth pin of the counter U1 is connected to the input end of the on-off control module, the drain of the MOS tube Q2 is connected to the eleventh pin of the counter U1, the gate of the counter U1 is connected to one end of the resistor R13 and the reset signal, the other end of the resistor R13 is connected to the source of the MOS tube Q2, and the other end of the resistor R13 is grounded.

9. The monitoring circuit of the communication module according to claim 1, characterized in that: The on-off control module includes: Resonator U2, diode D4, diode D5, resistor R16; the seventh pin of resonator U2 is connected to the reset signal, the fifth pin of resonator U2 is connected to the output end of the status monitoring module and the anode of diode D5, the cathode of diode D5 is connected to one end of resistor R16, the other end of resistor R16 is connected to the sixth pin and the fourth pin of resonator U2, the eighth pin of resonator U2 is grounded, the cathode of diode D5 is connected to the anode of diode D4, and the cathode of diode D4 is connected to the switch of the communication module; the twelfth pin of resonator U2 is connected to the output end of the power conversion module.

10. The monitoring circuit of the communication module according to claim 8, characterized in that: The logic gate U4 is a NAND gate.

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