Switch tripping control circuit

Abstract

The utility model provides a switch tripping control circuit, and belongs to the technical field of switch control. The switch tripping control circuit comprises an air switch, a voltage sampling module, a UPS (Uninterrupted Power Supply) control module and a tripping control module, the first end of the air switch is used for connecting a storage battery, the second end of the air switch is connected with the first end of the UPS control module, and the second end of the UPS control module is used for outputting power supply voltage; the first end of the voltage sampling module is connected with the second end of the air switch; the third end of the UPS control module and the second end of the voltage sampling module are both connected with the input end of the tripping control module, and the output end of the tripping control module is connected with a control coil of the air switch. According to the invention, the problem that a conventional UPS system lacks rapid and effective protection measures in case of sudden faults such as over-discharge, overload and short circuit of a storage battery can be solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of switch control, and in particular to a switch tripping control circuit. Background Art

[0002] In power systems, UPS systems are critical equipment, and their stability and reliability are directly related to the safe operation of the entire power network. However, traditional UPS systems often lack effective and rapid protection measures when faced with sudden faults such as battery over-discharge, overload, and short circuit, which can easily lead to system downtime and even equipment damage.

[0003] Traditional UPS systems typically rely on simple voltage detection and manual intervention to respond to faults. This approach is not only slow to respond but also easily affected by human factors, making it difficult to ensure the continued stable operation of the system. Utility Model Content

[0004] The disclosed embodiments provide a switch trip control circuit to solve the problem that conventional UPS systems lack rapid and effective protection measures when facing sudden faults such as battery over-discharge, overload, and short circuit.

[0005] An embodiment of the present disclosure provides a switch tripping control circuit, comprising:

[0006] Circuit breaker, voltage sampling module, UPS control module and trip control module;

[0007] The first end of the circuit breaker is used to connect to the battery, the second end of the circuit breaker is connected to the first end of the UPS control module, and the second end of the UPS control module is used to output the power supply voltage;

[0008] The first end of the voltage sampling module is connected to the second end of the circuit breaker;

[0009] The third terminal of the UPS control module and the second terminal of the voltage sampling module are both connected to the input terminal of the trip control module, and the output terminal of the trip control module is connected to the control coil of the circuit breaker.

[0010] In an exemplary embodiment of the present disclosure, the trip control module includes: a resistor R65, a resistor R79, a resistor R66, a voltage regulator U3 and a switch tube Q5;

[0011] The first end of the resistor R65 is used to connect to the power supply, the second end of the resistor R65 is connected to the reference electrode of the voltage regulator U3, the second end of the resistor R65 is grounded through the resistor R79, the cathode of the voltage regulator U3 is connected to the power supply through the resistor R66, the anode of the voltage regulator U3 is grounded, the cathode of the voltage regulator U3 is connected to the control end of the switch tube Q5, the first end of the switch tube Q5 is connected to the first end of the circuit breaker control coil, and the second end of the circuit breaker control coil is used to connect to the power supply.

[0012] In an exemplary embodiment of the present disclosure, the UPS control module includes: a resistor R61, an optocoupler OP1, a voltage regulator U2, a resistor R63, a resistor R70, and an optocoupler OP2;

[0013] The first end of the resistor R63 is used to connect to the power supply, the second end of the resistor R63 is grounded through the resistor R70, the second end of the resistor R63 is connected to the reference electrode of the voltage regulator U2, the cathode of the voltage regulator U2 is connected to the first input end of the optocoupler OP1, the second input end of the optocoupler OP1 is connected to connect to the power supply, the first output end of the optocoupler OP1 is connected to the first end of the resistor R61, the second end of the resistor R61 serves as the third end of the UPS control module, the second output end of the optocoupler OP1 is connected to the first input end of the optocoupler OP2, the second input end of the optocoupler OP2 is grounded, the first output end of the optocoupler OP2 is connected to the input end of the trip control module, and the second output end of the optocoupler OP2 is grounded.

[0014] In an exemplary embodiment of the present disclosure, the UPS control module further includes: a resistor R56 and a diode D17;

[0015] A first end of the resistor R56 is connected to a power supply, a second end of the resistor R56 is connected to an anode of the diode D17 , and a cathode of the diode D17 is connected to a second input end of the optocoupler OP1 .

[0016] In an exemplary embodiment of the present disclosure, the UPS control module further includes: a voltage regulator diode D18, a resistor R71, a resistor R76, a transistor Q4, and a resistor R68;

[0017] The first end of the resistor R68 is connected to the second end of the resistor R63, the second end of the resistor R68 is connected to the collector of the transistor Q4, and the emitter of the transistor Q4 is grounded;

[0018] The cathode of the voltage-stabilizing tube D18 is connected to the first input terminal of the optocoupler OP1 , the anode of the voltage-stabilizing tube D18 is connected to the base of the transistor Q4 via the resistor R71 , and the base of the transistor Q4 is grounded via the resistor R76 .

[0019] In an exemplary embodiment of the present disclosure, the voltage sampling module includes: a voltage regulator U4, a resistor R83, a resistor R80, an optical coupler OP3, a resistor R91 and a switch tube Q6;

[0020] The first ends of the resistor R83 and the resistor R80 are both used to connect to the power supply, the second end of the resistor R83 is connected to the cathode of the voltage regulator U4, the reference electrode of the voltage regulator U4 is connected to the second end of the circuit breaker, and the anode of the voltage regulator U4 is grounded;

[0021] The second end of the resistor R80 is connected to the first input end of the optocoupler OP3, the second input end of the optocoupler OP3 is connected to the first end of the switch tube Q6, the control end of the switch tube Q6 is connected to the cathode of the voltage regulator U4, and the second end of the switch tube Q6 is grounded;

[0022] The first output end of the optical coupler OP3 is connected to the input end of the trip control module, and the second output end of the optical coupler OP3 is grounded.

[0023] In an exemplary embodiment of the present disclosure, it further includes: an emergency control module;

[0024] The emergency control module includes: a resistor R87, an emergency switch J5 and an optical coupler OP4;

[0025] The first end of the resistor R87 is used to connect to the power supply, the second end of the resistor R87 is connected to the first input end of the optocoupler OP4, the second input end of the optocoupler OP4 is connected to the first end of the emergency switch J5, the second end of the emergency switch J5 is grounded, the first output end of the optocoupler OP4 is connected to the input end of the trip control module, and the second output end of the optocoupler OP4 is grounded.

[0026] The beneficial effects of a switch trip control circuit provided by the embodiment of the present disclosure are:

[0027] The disclosed embodiment uses real-time monitoring of the voltage sampling module and intelligent regulation of the UPS control module. The circuit can accurately grasp the working status of the battery and quickly activate the trip control module when potential risks such as voltage anomalies, overloads, and short circuits are detected. This effectively prevents the fault from further expanding and ensures that the UPS system can continuously and stably supply power to downstream equipment. The UPS control module not only ensures the stability of the output voltage, but also enhances the system's self-protection capabilities through information transmission. The disclosed embodiment greatly reduces the risk of damage to the UPS system due to power failures, and builds a solid power protection line of defense for the continuous operation of critical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 This is a structural block diagram of a switch trip control circuit provided by an embodiment of the present disclosure;

[0030] Figure 2 This is a circuit diagram of a switch trip control circuit provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] To help those skilled in the art better understand this solution, the following will clearly describe the technical solutions in the embodiments of this solution in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of this solution, not all of it. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of this solution.

[0032] Throughout the specification, claims, and accompanying figures of this solution, the term "including" and any variations thereof mean "including, but not limited to," and are intended to cover non-exclusive inclusions and are not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish between different objects, not to describe a specific order.

[0033] The following describes the implementation of the present disclosure in detail with reference to the accompanying drawings:

[0034] Figure 1 This is a schematic diagram of the structure of a switch trip control circuit provided by an embodiment of the present disclosure. Figure 1 The switch trip control circuit includes: an air breaker, a voltage sampling module, a UPS control module and a trip control module; the first end of the air breaker is used to connect to the battery, the second end of the air breaker is connected to the first end of the UPS control module, and the second end of the UPS control module is used to output the power supply voltage; the first end of the voltage sampling module is connected to the second end of the air breaker; the third end of the UPS control module and the second end of the voltage sampling module are both connected to the input end of the trip control module, and the output end of the trip control module is connected to the control coil of the air breaker.

[0035] In this embodiment, a battery is connected to the first terminal of a circuit breaker (MCB). When the MCB is closed, the battery's electrical energy can be transferred to the second terminal of the MCB, which is further connected to the first terminal of a UPS control module. The UPS control module receives electrical energy from the MCB and outputs a stable supply voltage through its second terminal, providing a continuous and reliable power supply to the power system. The first terminal of a voltage sampling module is connected to the second terminal of the MCB, accurately sampling and monitoring the battery's voltage in real time. Simultaneously, the third terminal of the UPS control module and the second terminal of the voltage sampling module are both connected to the input of a trip control module. The voltage sampling module transmits the collected battery voltage data to the trip control module, which in turn provides information such as its own operating status and abnormal signals. When a fault condition such as battery over-discharge, overload, or short circuit occurs, the voltage collected by the voltage sampling module will undergo abnormal changes. The trip control module controls the MCB's status based on signals from the voltage sampling module and the UPS control module.

[0036] For example, if the voltage sampling module detects a sudden and significant drop in voltage, it may indicate that the battery is over-discharged or short-circuited, or if the UPS control module detects a serious problem such as overload in the UPS system, the trip control module will make a quick decision.

[0037] Once it is determined that protective measures need to be taken, the output end of the trip control module will send a trip signal to the control coil of the circuit breaker, prompting the circuit breaker to trip immediately and quickly cut off the connection between the battery and the subsequent circuit, thereby avoiding the expansion of the fault and effectively protecting the normal operation of the UPS system.

[0038] For example, suppose a battery short circuit occurs during UPS system operation due to some unexpected cause. The voltage sampling module immediately detects the abnormal voltage drop and transmits this information to the trip control module. Upon receiving this abnormal signal, the trip control module quickly makes a trip decision and sends a trip command to the circuit breaker's control coil. The circuit breaker instantly opens, preventing the short-circuit current from causing further damage to the entire UPS system. If the UPS control module detects a serious fault and is unable to output a stable voltage, it will also notify the trip control module to promptly open the circuit breaker to ensure the safety of the entire UPS system.

[0039] From the above, it can be concluded that this embodiment, through real-time monitoring by the voltage sampling module and intelligent regulation by the UPS control module, can accurately grasp the operating status of the battery and quickly activate the trip control module when potential risks such as voltage anomalies, overloads, and short circuits are detected. This effectively prevents further expansion of the fault and ensures that the UPS system can continuously and stably supply power to downstream equipment. The UPS control module not only ensures the stability of the output voltage but also enhances the system's self-protection capabilities through information transmission. This embodiment greatly reduces the risk of damage to the UPS system due to power failures and establishes a solid power protection line of defense for the continuous operation of critical equipment.

[0040] like Figure 2 As shown, in one embodiment of the present disclosure, the tripping control module includes: a resistor R65, a resistor R79, a resistor R66, a voltage regulator U3 and a switch tube Q5; the first end of the resistor R65 is used to connect to the power supply, the second end of the resistor R65 is connected to the reference electrode of the voltage regulator U3, the second end of the resistor R65 is grounded through the resistor R79, the cathode of the voltage regulator U3 is connected to the power supply through the resistor R66, the anode of the voltage regulator U3 is grounded, the cathode of the voltage regulator U3 is connected to the control end of the switch tube Q5, the first end of the switch tube Q5 is connected to the first end of the circuit breaker control coil, and the second end of the circuit breaker control coil is used to connect to the power supply.

[0041] In this embodiment, the voltage regulator U3 may be a TL431 voltage regulator, and the switch tube Q5 may be an N-channel field effect transistor.

[0042] Resistors R65 and R79 form a voltage divider circuit for dividing the power supply voltage. When the UPS power system is operating normally, the voltage at the reference electrode of voltage regulator U3 is greater than 2.5V, voltage regulator U3 is turned on, and the control terminal of switch Q5 is at a low level. Therefore, switch Q5 is turned off, the control coil of the circuit breaker is not energized, and the circuit breaker does not operate. When the battery voltage is too low or the UPS control module detects a serious fault, the voltage at the reference electrode of voltage regulator U3 will be less than 2.5V, voltage regulator U3 will be turned off, and the voltage at the cathode of voltage regulator U3 will increase, turning on switch Q5. At this time, the control coil of the circuit breaker is energized, and the circuit breaker is disconnected.

[0043] In this embodiment, the trip control module, through a meticulously designed circuit layout, cleverly combines a voltage divider, a voltage regulator, and a switching transistor, enabling intelligent monitoring and emergency response of the UPS system status. Under normal power conditions, the module ensures that the circuit breaker control coil is de-energized, maintaining stable system operation. In the event of an abnormality, such as low battery voltage or a serious UPS control module failure, the module rapidly responds by altering the circuit state to conduct the switching transistor, which in turn automatically disconnects the circuit breaker, effectively cutting off power and preventing further damage to the system or potential safety hazards.

[0044] like Figure 2 As shown, in one embodiment of the present disclosure, the UPS control module includes: a resistor R61, an optocoupler OP1, a voltage regulator U2, a resistor R63, a resistor R70 and an optocoupler OP2; the first end of the resistor R63 is used to connect to the power supply, the second end of the resistor R63 is grounded through the resistor R70, the second end of the resistor R63 is connected to the reference electrode of the voltage regulator U2, the cathode of the voltage regulator U2 is connected to the first input end of the optocoupler OP1, the second input end of the optocoupler OP1 is connected to connect to the power supply, the first output end of the optocoupler OP1 is connected to the first end of the resistor R61, the second end of the resistor R61 serves as the third end of the UPS control module, the second output end of the optocoupler OP1 is connected to the first input end of the optocoupler OP2, the second input end of the optocoupler OP2 is grounded, the first output end of the optocoupler OP2 is connected to the input end of the trip control module, and the second output end of the optocoupler OP2 is grounded.

[0045] In this embodiment, the voltage regulator U2 may be a TL431 voltage regulator.

[0046] Resistors R63 and R70 form a voltage divider circuit. When the power supply is normal, the reference voltage of voltage regulator U2 is greater than 2.5V, turning on voltage regulator U2 and emitting light from the LED inside optocoupler OP1. At this point, if the UPS system is operating normally, the first end of resistor R61 is at a low level, turning off optocoupler OP2, and the voltage at the first output end of optocoupler OP2 is greater than 2.5V.

[0047] Under normal power supply conditions, if the UPS system operates abnormally, the first end of the resistor R61 is at a high level, the optocoupler OP1 is turned on, the voltage at the first output end of the optocoupler OP1 is greater than 2.5V, the second output end of the optocoupler OP2 outputs a high level, and the optocoupler OP2 is also turned on. Therefore, the first output end of the optocoupler OP2 is at a low level, and the reference pole of the voltage regulator U3 is short-circuited to the ground, thereby turning off the voltage regulator U3.

[0048] In this embodiment, a voltage divider circuit is combined with a TL431 voltage regulator to accurately determine the power supply status. Furthermore, by cascading optocouplers OP1 and OP2, precise identification of UPS system function is achieved. When the power supply is normal and the UPS system is operating, the module remains silent. If the UPS system experiences an abnormality, the module quickly activates, transmitting a signal to the trip control module via optocoupler OP2, triggering the emergency response mechanism. This design not only enhances the UPS system's self-diagnosis and protection capabilities but also ensures rapid power shutdown in the event of a system failure, effectively preventing the fault from escalating and safeguarding the safety and stability of the entire power system.

[0049] like Figure 2As shown, in one embodiment of the present disclosure, the UPS control module further includes: a resistor R56 and a diode D17; the first end of the resistor R56 is used to connect to the power supply, the second end of the resistor R56 is connected to the anode of the diode D17, and the cathode of the diode D17 is connected to the second input end of the optocoupler OP1.

[0050] In this embodiment, a resistor R56 and a diode D17 are connected in series between the second input terminal of the optocoupler OP1 and the power supply; the resistor R56 serves to limit the current to prevent excessive current from damaging the optocoupler OP1, and the diode D17 serves to prevent signal backflow.

[0051] In this embodiment, the addition of resistor R56 and diode D17 further optimizes the circuit's safety and stability. Resistor R56, acting as a current-limiting element, effectively limits the current flowing into optocoupler OP1, preventing component damage that could result from excessive current and extending the device's service life. Diode D17, acting as a backflow prevention device, ensures unidirectional signal transmission, preventing reverse interference with optocoupler OP1 from the power supply or other circuits, and improving the system's anti-interference capabilities and reliability.

[0052] like Figure 2 As shown, in one embodiment of the present disclosure, the UPS control module further includes: a voltage regulator tube D18, a resistor R71, a resistor R76, a transistor Q4 and a resistor R68; the first end of the resistor R68 is connected to the second end of the resistor R63, the second end of the resistor R68 is connected to the collector of the transistor Q4, and the emitter of the transistor Q4 is grounded; the cathode of the voltage regulator tube D18 is connected to the first input end of the optocoupler OP1, the anode of the voltage regulator tube D18 is connected to the base of the transistor Q4 through the resistor R71, and the base of the transistor Q4 is grounded through the resistor R76.

[0053] In this embodiment, the voltage regulator diode D18, resistors R71, R76, transistor Q4, and resistor R68 form a hysteresis circuit. When the power supply voltage is divided by resistors R63 and R70, its value is transmitted to resistor R68. As the power supply voltage changes, the voltage across R68 also changes accordingly. This voltage enters the collector of transistor Q4, while the base voltage of transistor Q4 is provided by the voltage regulator diode D18 after being divided by resistors R71 and R76. Here, R71 and R76 jointly determine the conduction threshold voltage of transistor Q4.

[0054] The key to a hysteresis circuit lies in its ability to set two different threshold voltages: one for triggering an action (such as tripping) and the other for resetting (such as reconnecting). When the power supply voltage rises to a certain level (i.e., exceeding the conduction threshold of transistor Q4), transistor Q4 begins to conduct, pulling down the voltage through the collector-emitter path of transistor Q4. This, in turn, affects the state of optocoupler OP1 and subsequent circuits, potentially triggering a trip signal. However, when the power supply voltage drops, due to the hysteresis effect, transistor Q4 does not turn off immediately. Instead, it waits until the power supply voltage drops to a lower level (i.e., below the hysteresis voltage) before returning to its initial state, thus preventing the false triggering of a trip signal due to voltage fluctuations.

[0055] In this embodiment, by introducing the hysteresis circuit, the UPS control module can operate more stably during the initial power-on and power-off processes, avoiding malfunctions caused by voltage fluctuations and improving the overall reliability and safety of the system.

[0056] like Figure 2 As shown, in one embodiment of the present disclosure, the voltage sampling module includes: a voltage regulator U4, a resistor R83, a resistor R80, an optocoupler OP3, a resistor R91 and a switch tube Q6; the first ends of the resistors R83 and R80 are both used to connect to the power supply, the second end of the resistor R83 is connected to the cathode of the voltage regulator U4, the reference electrode of the voltage regulator U4 is connected to the second end of the circuit breaker, and the anode of the voltage regulator U4 is grounded; the second end of the resistor R80 is connected to the first input end of the optocoupler OP3, the second input end of the optocoupler OP3 is connected to the first end of the switch tube Q6, the control end of the switch tube Q6 is connected to the cathode of the voltage regulator U4, and the second end of the switch tube Q6 is grounded; the first output end of the optocoupler OP3 is connected to the input end of the trip control module, and the second output end of the optocoupler OP3 is grounded.

[0057] In this embodiment, the voltage regulator U4 can be a TL431 voltage regulator.

[0058] The reference electrode of the voltage regulator U4 is connected to the second end of the circuit breaker and is used to collect the voltage of the battery. When the remaining power in the battery is greater than the preset value, the reference electrode voltage of the voltage regulator U4 is greater than 2.5V, the voltage regulator U4 is turned on, the control end of the switch tube Q6 is at a low level, the switch tube Q6 is turned off, and the optocoupler OP3 is turned off. Therefore, the voltage at the first output end of the optocoupler OP3 is greater than 2.5V, and the voltage regulator U3 is turned on.

[0059] To prevent the battery from being over-discharged, when the remaining power in the battery is less than a preset value, the reference voltage of the voltage regulator U4 is less than 2.5V, the voltage regulator U4 is cut off, the control end of the switch tube Q6 is at a high level, the switch tube Q6 is turned on, the optocoupler OP3 is turned on, and therefore the first output end of the optocoupler OP3 is approximately grounded. Therefore, the reference voltage of the voltage regulator U3 is less than 2.5V, and the voltage regulator U3 is cut off.

[0060] In this embodiment, the voltage sampling module integrates components such as voltage regulator U4, optocoupler OP3, and switch Q6 to achieve intelligent monitoring and protection of battery voltage. This module accurately senses the remaining battery charge and ensures normal system operation when sufficient. If the charge drops below a preset safety threshold, it automatically triggers a protection mechanism, transmitting a signal to the trip control module via optocoupler OP3, effectively preventing over-discharge of the battery and extending its service life. This not only improves the overall safety and reliability of the UPS system but also enables intelligent battery management, reducing system risks caused by battery failure and providing strong guarantees for the continuity and stability of the power supply.

[0061] like Figure 2 As shown, in one embodiment of the present disclosure, it also includes: an emergency control module; the emergency control module includes: a resistor R87, an emergency switch J5 and an optocoupler OP4; the first end of the resistor R87 is used to connect to the power supply, the second end of the resistor R87 is connected to the first input end of the optocoupler OP4, the second input end of the optocoupler OP4 is connected to the first end of the emergency switch J5, the second end of the emergency switch J5 is grounded, the first output end of the optocoupler OP4 is connected to the input end of the trip control module, and the second output end of the optocoupler OP4 is grounded.

[0062] In this embodiment, the emergency control module is designed to trigger the UPS system's trip control through manual intervention in specific emergency situations, thereby quickly shutting off the power supply or implementing other safety protection measures. The emergency control module primarily consists of resistor R87, emergency switch J5, and optocoupler OP4.

[0063] When emergency tripping is required, the emergency switch J5 can be pressed, the optocoupler OP4 is turned on, the reference pole of the voltage regulator U3 is short-circuited to the ground, the voltage regulator U3 is cut off, and the switch tube Q5 is turned on to provide a power supply circuit for the control coil of the circuit breaker, thereby performing the tripping operation.

[0064] In this embodiment, in the event of an emergency, the operator can quickly press the emergency switch J5, leveraging the efficient electrical isolation and signal transmission characteristics of the optocoupler OP4 to directly trigger the trip control module, ensuring that the power supply is immediately cut off or necessary protective measures are taken. This process not only simplifies the emergency operation process and improves response speed, but also effectively prevents equipment damage or safety accidents that may be caused by continuous power supply.

[0065] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

Claims

1. A switch tripping control circuit, characterized in that: include: Circuit breaker, voltage sampling module, UPS control module and trip control module; The first end of the circuit breaker is used to connect to the battery, the second end of the circuit breaker is connected to the first end of the UPS control module, and the second end of the UPS control module is used to output the power supply voltage; The first end of the voltage sampling module is connected to the second end of the circuit breaker; The third end of the UPS control module and the second end of the voltage sampling module are both connected to the input end of the trip control module, and the output end of the trip control module is connected to the control coil of the circuit breaker.

2. A switch tripping control circuit as claimed in claim 1, characterized in that: The trip control module includes: a resistor R65, a resistor R79, a resistor R66, a voltage stabilizer U3 and a switch tube Q5; The first end of the resistor R65 is used to connect to the power supply, the second end of the resistor R65 is connected to the reference electrode of the voltage regulator U3, the second end of the resistor R65 is grounded through the resistor R79, the cathode of the voltage regulator U3 is connected to the power supply through the resistor R66, the anode of the voltage regulator U3 is grounded, the cathode of the voltage regulator U3 is connected to the control end of the switch tube Q5, the first end of the switch tube Q5 is connected to the first end of the air switch control coil, and the second end of the air switch control coil is used to connect to the power supply.

3. A switch tripping control circuit as claimed in claim 1, characterized in that: The UPS control module includes: a resistor R61, an optical coupler OP1, a voltage stabilizer U2, a resistor R63, a resistor R70 and an optical coupler OP2; The first end of the resistor R63 is used to connect to the power supply, the second end of the resistor R63 is grounded through the resistor R70, the second end of the resistor R63 is connected to the reference electrode of the voltage regulator U2, the cathode of the voltage regulator U2 is connected to the first input end of the optocoupler OP1, the second input end of the optocoupler OP1 is connected to connect to the power supply, the first output end of the optocoupler OP1 is connected to the first end of the resistor R61, the second end of the resistor R61 serves as the third end of the UPS control module, the second output end of the optocoupler OP1 is connected to the first input end of the optocoupler OP2, the second input end of the optocoupler OP2 is grounded, the first output end of the optocoupler OP2 is connected to the input end of the trip control module, and the second output end of the optocoupler OP2 is grounded.

4. A switch tripping control circuit as claimed in claim 3, characterized in that: The UPS control module also includes: a resistor R56 and a diode D17; The first end of the resistor R56 is used to connect to the power supply, the second end of the resistor R56 is connected to the anode of the diode D17, and the cathode of the diode D17 is connected to the second input end of the optical coupler OP1.

5. A switch tripping control circuit as claimed in claim 3, characterized in that: The UPS control module also includes: a voltage regulator tube D18, a resistor R71, a resistor R76, a transistor Q4 and a resistor R68; The first end of the resistor R68 is connected to the second end of the resistor R63, the second end of the resistor R68 is connected to the collector of the transistor Q4, and the emitter of the transistor Q4 is grounded; The cathode of the voltage regulator tube D18 is connected to the first input terminal of the optical coupler OP1, the anode of the voltage regulator tube D18 is connected to the base of the transistor Q4 through the resistor R71, and the base of the transistor Q4 is grounded through the resistor R76.

6. A switch tripping control circuit as claimed in claim 1, characterized in that: The voltage sampling module includes: a voltage stabilizer U4, a resistor R83, a resistor R80, an optical coupler OP3, a resistor R91 and a switch tube Q6; The first ends of the resistor R83 and the resistor R80 are both used to connect to the power supply, the second end of the resistor R83 is connected to the cathode of the voltage regulator U4, the reference electrode of the voltage regulator U4 is connected to the second end of the circuit breaker, and the anode of the voltage regulator U4 is grounded; The second end of the resistor R80 is connected to the first input end of the optical coupler OP3, the second input end of the optical coupler OP3 is connected to the first end of the switch tube Q6, the control end of the switch tube Q6 is connected to the cathode of the voltage regulator U4, and the second end of the switch tube Q6 is grounded; The first output end of the optical coupler OP3 is connected to the input end of the trip control module, and the second output end of the optical coupler OP3 is grounded.

7. A switch tripping control circuit as claimed in claim 1, characterized in that: Also includes: Emergency control module; The emergency control module includes: a resistor R87, an emergency switch J5 and an optical coupler OP4; The first end of the resistor R87 is used to connect to the power supply, the second end of the resistor R87 is connected to the first input end of the optocoupler OP4, the second input end of the optocoupler OP4 is connected to the first end of the emergency switch J5, the second end of the emergency switch J5 is grounded, the first output end of the optocoupler OP4 is connected to the input end of the trip control module, and the second output end of the optocoupler OP4 is grounded.

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