CN115166488A - A fire-fighting equipment false trigger detection circuit and method - Google Patents

Abstract

The invention discloses a fire fighting equipment false triggering detection circuit and a method, comprising an energy absorption circuit electrically connected with a fire fighting equipment interface; the energy absorption circuit is electrically connected with an energy level detection circuit; the energy magnitude detection circuit is electrically connected with the energy time domain timing circuit and the latch interrupt circuit; the energy time domain timing circuit and the latch interrupt circuit are electrically connected with the trigger latch circuit, and the trigger latch circuit is electrically connected with a feedback port. The invention can reduce the verification cost of the electric starting scheme of the control board and improve the stability of the product and public praise of the market.

Description

A fire-fighting equipment false trigger detection circuit and method

technical field

The invention relates to the field of electricity, in particular to a false trigger detection circuit for fire protection equipment.

Background technique

At present, the electric starting circuit scheme of cabinet fire fighting on the market is immature and easy to trigger the entire fire protection system by mistake, especially the aerosol fire extinguisher and water fire extinguishing equipment. False triggering will cause the cabinet to be in a state of no fault / no risk of thermal runaway of the battery. Activating the fire protection system causes the cabinet to distribute a large amount of solid particles or adhere to a large amount of water, which makes the cabinet unusable and needs to be returned to the manufacturer for repair before it can be put on the market again. question.

In addition to the problems of smoke and temperature sensors that may be too sensitive, due to the complex hardware and software systems in the power exchange cabinet, many electromagnetic equipment, and complex environment, it is easy for the sensor to transmit erroneous signals due to electromagnetic interference, etc., resulting in fire equipment. false positives.

For example: 1) Charging power supply (high-power power supply in the cabinet):

In the working state of the charging power supply, especially under the condition of full-load output, the main internal interference sources are: switch circuit, rectifier diode of rectifier circuit, stray parameters, etc.

The switch circuit consists of a switch tube and a high-frequency transformer. There is a distributed capacitance between the switch tube and its heat sink and the lead wires inside the casing and the power supply, and the du/dt generated by it has a large amplitude pulse, a wide frequency band and rich harmonics. The switch tube load is the primary coil of the high-frequency transformer, which is an inductive load. When the originally turned-on switch is turned off, the leakage inductance of the high-frequency transformer produces a back EMF E=-Ldi/dt, whose value is proportional to the current change rate of the collector, and proportional to the leakage inductance. On the off-voltage, the off-voltage spike is formed, thereby forming interference.

There is a reverse current when the output rectifier diode is turned off, and the time it takes to recover to zero is related to factors such as junction capacitance. Under the influence of transformer leakage inductance and other distribution parameters, it will produce a large current change di/dt, resulting in strong high-frequency interference, and the frequency can reach several tens of megahertz.

Due to operating at higher frequencies, the characteristics of low-frequency components in switching power supplies will change, resulting in noise. At high frequencies, the stray parameters have a great influence on the characteristics of the coupling channel, and the distributed capacitance becomes the channel of electromagnetic interference.

Electromagnetic lock:

The principle of the electromagnetic lock is electromagnetism, and the generated magnetic field is easily radiated into the space in the cabinet. For the charging and replacing cabinet, generally, because each warehouse needs to be equipped with an aerosol fire extinguisher, its electric start The circuit is built on the warehouse control board and the position of the electromagnetic lock is very close, so once there is an unlocking action, it is easy to cause interference to the electric starting circuit.

relay;

The principle of electromagnetic contactor is that when the electromagnetic coil of the contactor is energized, a strong magnetic field will be generated, so that the static iron core will generate electromagnetic attraction to attract the armature and drive the contact action. Therefore, the relay coil has a strong inductance when it is energized, and the inductive energy cannot be released when it is turned off, resulting in a reverse high-voltage electromotive force, which interferes with the system.

The stability of the fire-fighting electric starting circuit scheme requires continuous trial and error of product launch. In the existing test method, each trial and error will cause the fire-fighting equipment to start, resulting in the loss of cabinets and fire-fighting equipment, so the trial-and-error cost is extremely high. In addition, when the fire-fighting equipment is triggered by mistake, it will cause damage to the internal equipment of the power exchange cabinet, making it difficult to find out the cause of the false trigger. Therefore, the detection and activation thresholds of related smoke sensors, temperature sensors, etc. can only be slightly increased, but This can easily lead to sensor passivation, and it cannot be started in time in the face of an actual fire. Therefore, the existing detection equipment and methods need to be improved.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention proposes a false trigger detection circuit for fire protection equipment.

The object of the present invention is achieved through the following technical solutions:

A fire-fighting equipment false trigger detection circuit, comprising an energy absorption circuit electrically connected with a fire-fighting equipment interface; the energy absorption circuit is electrically connected with an energy level detection circuit; the energy level detection circuit is electrically connected with an energy time domain timing circuit and a latch interrupt circuit ; The energy time domain timing circuit and the latch interruption circuit are electrically connected to the trigger latch circuit, and the trigger latch circuit is electrically connected with a feedback port;

The energy absorption circuit is used to simulate the starting circuit of the fire fighting equipment, and outputs the trigger signal according to the simulated fire fighting equipment;

The energy level detection circuit is used to detect whether the trigger signal output by the energy absorption circuit reaches the start-up standard of the fire-fighting equipment. When the strength of the trigger signal reaches the start-up standard of the fire-fighting equipment, the energy time domain timing circuit starts timing, and the strength of the trigger signal reaches the start-up standard of the fire-fighting equipment. When the preset threshold causes the fire-fighting equipment to start, the triggering latch circuit will determine that a fire-fighting equipment false trigger has occurred and the result will be latched and transmitted to the storage device through the feedback port; if the time counted by the energy time domain timing circuit is lower than the fire-fighting equipment When the threshold is activated, the latch interrupt circuit interrupts the latch process that triggers the latch circuit.

A further improvement, the energy absorption circuit includes a first noise discharge resistance R1 and a fourth energy absorption resistance R4 electrically connected to the fire fighting equipment interface, and the fourth energy absorption resistance R4 is electrically connected with a fifth sampling resistance R5; The energy absorption resistor R4 and the fifth sampling resistor R5 are connected in series with the first noise discharge resistor R1 in parallel, and the third voltage stabilization capacitor C3 is connected in parallel.

A further improvement, the energy absorption circuit includes a Zener diode Z1 electrically connected to the fire fighting equipment interface and the drain of the second MOS transistor Q2, the Zener diode Z1 is electrically connected with a fifteenth resistor R15 and a fourteenth resistor R14, the tenth The four resistors R14 are electrically connected to the base of the fifth transistor Q5; the collector of the fifth transistor Q5 is electrically connected to the tenth resistor R10, the twelfth resistor R12 and the gate of the fourth MOS transistor Q4; the fourth MOS transistor The drain of the gate of Q4 is electrically connected to the ninth resistor R9, the tenth resistor R10 and the gate of the third MOS transistor Q3; the drain of the third MOS transistor Q3 is electrically connected to the seventh resistor R7 and the gate of the second MOS transistor Q2 The seventh resistor R7 and the ninth resistor R9 are both electrically connected to the drain of the second MOS transistor Q2; the source of the second MOS transistor Q2 is electrically connected to the eighth resistor R8, and the eighth resistor R8 is electrically connected to the thirteenth resistor R13 ; The source of the fourth MOS transistor Q4 is electrically connected to the thirteenth resistor R13, the source of the third MOS transistor Q3, the eleventh resistor R11, the twelfth resistor R12, the emitter of the fifth transistor Q5 and the fifteenth Resistor R15.

A further improvement, the energy level detection circuit includes a twenty-fourth adjustable resistor R24 electrically connected to the energy absorption circuit, and the twenty-fourth adjustable resistor R24 is electrically connected to the second Zener diode Z2 and the anode of the operational amplifier U3. The negative electrode of the operational amplifier U3 is electrically connected with the twenty-sixth adjustable resistor R26 and the twenty-seventh adjustable resistor R27, and the twenty-sixth adjustable resistor R26 is electrically connected to the twenty-eighth resistor R38 and the operational amplifier U3. The fifth pin, the twenty-eighth resistor R38 is electrically connected to the collector of the thirteenth transistor Q10, and the emitter of the collector of the thirteenth transistor Q10 is electrically connected to the second pin and the twentieth pin of the operational amplifier U3. The seven adjustable resistor R27, the twenty-fifth adjustable resistor R25 and the second Zener diode Z2, the twenty-fifth adjustable resistor R25 is electrically connected to the anode of the operational amplifier U3; the base of the thirteenth transistor Q10 is electrically connected with The twenty-ninth resistor R29 is electrically connected to the first pin of the operational amplifier U3.

A further improvement, the energy time domain timing circuit includes a first chip U1, the sixth pin and the seventh pin of the first chip U1 are electrically connected with a second resistor R2 and a first capacitor C1; the second resistor R2 is electrically connected The fourth pin and the eighth pin of the first chip U1; the first capacitor C1 is electrically connected to a fourth capacitor C4, and the fourth capacitor C4 is electrically connected to the fifth pin of the first chip U1.

A further improvement, the latching interrupt circuit includes a second chip U2, the sixth pin and the seventh pin of the second chip U2 are electrically connected with a third resistor R3 and a second capacitor C2; the third resistor R3 is electrically connected The fourth pin and the eighth pin of the second chip U2; the second capacitor C2 is electrically connected to the fifth capacitor C5 and the emitter of the first transistor Q1, and the fifth capacitor C5 is electrically connected to the fifth pin 5; A sixth resistor R6 is electrically connected to the third pin of the two chips U2, and the sixth resistor R6 is electrically connected to the base of the first transistor Q1.

A further improvement, the trigger latch circuit includes a second diode D2, the anode of the second diode D2 is electrically connected to the energy time domain timing circuit, and the cathode is electrically connected to the latch interruption circuit; the second diode D2 The negative electrode is electrically connected to the twentieth resistor R20, the negative electrode of the first diode D1 and the gate of the seventh MOS transistor Q7; the source of the seventh MOS transistor Q7 is electrically connected to the twentieth resistor R20, the twenty-first resistor R21, the source of the eighth MOS transistor, the twenty-third resistor R23 and the source of the ninth MOS transistor Q9 are grounded; the drain of the seventh MOS transistor Q7 is electrically connected with the eighteenth resistor R18, the tenth The eighth resistor R18 is electrically connected to the seventeenth resistor R17 and the gate of the sixth MOS transistor Q6; the source of the sixth MOS transistor Q6 is electrically connected to the negative electrode and the twenty-second resistor R22, and the drain of the sixth MOS transistor Q6 is electrically connected The seventeenth resistor R17 and the sixteenth resistor R16; the anode of the second diode D2 is electrically connected to the nineteenth resistor R19, the twenty-first resistor R21 and the gate of the eighth MOS transistor Q8. The drain is electrically connected to the gate of the ninth MOS transistor Q9.

A method for detecting false triggering of fire-fighting equipment, comprising the following steps:

Step 1. Use the above-mentioned fire-fighting equipment false trigger detection circuit to replace the fire-fighting equipment and install it in the power exchange cabinet,

Step 2. Then run the power exchange cabinet in the actual environment or in the laboratory to simulate various environmental conditions, and then check whether the storage device records the latch sent by the triggering latch circuit in the absence of fire conditions. signal, and review the environmental parameters sensed by the fire-fighting sensing device when the latched signal was recorded.

A further improvement also includes step 3. When the storage device records the latch signal sent by the trigger latch circuit, adjust the sensing threshold of the fire-fighting sensing device, and then repeat step two; the fire-fighting sensing device includes a temperature sensor and a temperature sensor. smoke sensor;

Step 4. After repeating Step 2, carry out forward detection. The forward detection is to ignite an open fire that should trigger fire-fighting equipment in the power exchange cabinet;

Step 5. If it is not found that the trigger latch circuit does not send the latch signal after the forward detection, replace the model of the fire-fighting sensing equipment or the model of the components in the power exchange cabinet, or re-arrange the components in the power exchange cabinet and then re-install. test.

In a further improvement, in the first step, a magnetic intensity sensor is arranged near the fire-fighting sensing equipment in the power exchange cabinet;

In the second step, when the storage device records the latch signal sent by the triggering latch circuit, the magnetic force intensity sensed by the magnetic force sensor is recorded at the same time; then the storage device records the temperature, smoke concentration and magnetic force when the latch signal occurs. The value of the intensity is recorded in the system of the power exchange cabinet. When the same temperature, smoke concentration and magnetic intensity occur again, the fire fighting equipment is controlled not to start; when the accumulated data volume is greater than 200, the LSTM neural network is input for training, and the The trained LSTM neural network is loaded in the system of the power exchange cabinet, and it controls whether the fire-fighting equipment is activated in real time according to the received temperature, smoke concentration and magnetic strength signals.

Compared with the prior art, the patent of the present invention has the following beneficial effects:

1. The present invention can replace the fire-fighting equipment to carry out the false-trigger test, and can record the occurrence of false-triggering, thereby reducing the loss of the fire-fighting equipment after the false-triggering.

2. Different interfaces can be adopted for different fire-fighting equipment and adjusted as needed.

3. The present invention also proposes the advantages of collecting and then recording the false trigger signal, so as to reduce the time and difficulty of equipment debugging.

Description of drawings

The present invention will be further described by using the accompanying drawings, but the content in the accompanying drawings does not constitute any limitation to the present invention.

Figure 1 is a schematic diagram of the overall structure of a false trigger detection circuit for fire protection equipment;

Fig. 2 is a schematic diagram of aerosol electric start interface circuit;

Fig. 3 is the circuit schematic diagram of the water fire-fighting electric starting interface;

Fig. 4 is the circuit schematic diagram of the feedback interface;

Fig. 5 is the energy absorption circuit schematic diagram of aerosol electric start;

Figure 6 is a schematic diagram of an energy absorption circuit for electric starting of water fire protection;

7 is a schematic diagram of the circuit structure of an energy level detection circuit;

8 is a schematic diagram of the circuit structure of an energy time-domain timing circuit;

9 is a schematic diagram of the circuit structure of the result latch circuit;

10 is a schematic diagram of a circuit structure of a latching interrupt circuit;

FIG. 11 is a schematic diagram of the use flow of the false trigger detection circuit of the fire fighting equipment.

Detailed ways

In order to make the objectives, technical solutions and advantages of the invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and examples.

Example 1

As shown in FIG. 1, a false trigger detection circuit for fire protection equipment is characterized in that it includes an energy absorption circuit electrically connected to the interface of the fire protection equipment; the energy absorption circuit is electrically connected with an energy level detection circuit; the energy level detection circuit is electrically connected to The energy time domain timing circuit and the latch interruption circuit; the energy time domain timing circuit and the latch interruption circuit are electrically connected to the trigger latch circuit, and the trigger latch circuit is electrically connected with a feedback port;

The energy absorption circuit is used to simulate the starting circuit of the fire fighting equipment, and outputs the trigger signal according to the simulated fire fighting equipment;

The energy level detection circuit is used to detect whether the trigger signal output by the energy absorption circuit reaches the start-up standard of the fire-fighting equipment. When the strength of the trigger signal reaches the start-up standard of the fire-fighting equipment, the energy time domain timing circuit starts timing, and the strength of the trigger signal reaches the preset value. When the threshold that causes the fire-fighting equipment to start is reached, the triggering latch circuit will determine that a fire-fighting equipment false trigger has occurred and the result will be latched and transmitted to the storage device through the feedback port; When the threshold value is reached, the latch interrupt circuit interrupts the latch process that triggers the latch circuit.

Among them, as shown in Figure 2, the aerosol electric start interface circuit is used for docking with the electric start interface in the control board in the charging and replacement cabinet with the aerosol fire protection system/or other fire fighting equipment. The energy input (aerosol) is used for the analog signal, and the initial state is 0 mA.

As shown in Figure 3, it is the circuit of the water fire protection electric start interface interface, which is used for docking with the electric start interface in the control board in the charging and replacement cabinet with the water fire protection system/or other fire fighting equipment.

The energy input (water fire) is used for analog signal, the initial state is 12V.

As shown in Figure 4, it is the circuit of the feedback interface, which is connected with the data acquisition interface in the charging and exchanging cabinet with the fire protection system/or the control panel in other fire protection equipment, and is used to judge whether the electric start in the control system exists or not. Risk of interference/false triggering.

Detection result signal: digital signal, default high level.

As shown in Figure 5, the energy absorption circuit for aerosol electric activation is used to absorb the energy generated by interference/false triggering, which is equivalent to the energy threshold required for aerosol electric activation in real situations, such as the commonly used aerosol electric activation. The energy value is: 600mA, which can be absorbed by this part of the circuit.

in:

1) R1 is the noise bleeder resistor: it is equivalent to the fact that the energy generated by the noise will be bleed by this bleeder resistor under real conditions;

2) C3 is a stabilizing capacitor: it is used to convert the current into a stable voltage value in the voltage;

3) R4 is an energy absorption resistor: it is used to absorb the energy value required for the electric start of the aerosol, such as a current of 600mA;

4) R5 is a sampling resistor: used for current-to-voltage sampling;

5) Energy absorption signal: analog signal, initial state 0V.

This circuit is for the electric start of aerosol, and its electric start is driven by constant current, so for constant current driven equipment, this circuit can be simulated. For constant current driven equipment with different current values, only need to adjust R4 , the value of R5 can be.

As shown in Figure 6, the energy absorption circuit for electric starting of water and fire fighting is used to absorb interference energy, which is equivalent to the energy threshold required for electric starting of water and fire fighting in real situations. 6.3V/500mA, can be absorbed by this part of the circuit.

in:

1) The function of Z1 and Q5 is to adjust the threshold of the voltage in the energy value required for the electric start of water and fire protection; its value depends on the voltage regulation value of the Z1 voltage regulator tube and the conduction voltage drop between Q5 be;

2) R14 can be used to fine-tune the voltage threshold in the energy value required for the electric start of water and fire protection, and its fine-tuning value depends on the resistance of R14;

3) R8 is an energy absorption resistor: it is used to absorb the current in the energy value required for the electric start of water fire protection, such as a current of 500mA;

4) R5 is a sampling resistor: used for current-to-voltage sampling;

5) Energy absorption signal: analog signal, initial state 0V.

For this circuit, the electric start for water fire protection is driven by constant voltage, so for constant voltage driven equipment, this circuit can be simulated. For constant voltage driven equipment with different voltage values, only need to adjust the lower voltage The voltage regulation value of the pressure tube and the conduction voltage drop value between Q5 be and the value of R15 are enough.

As shown in Figure 7, it is an energy level detection circuit, which is used to determine whether the energy generated by interference/false triggering meets the energy threshold for starting aerosol or water fire fighting.

in:

1) R24 and R25 or R26 and R27 can be adjusted to adjust the energy threshold;

2) Energy level judgment signal: digital signal, default high level.

Figure 8 is an energy time-domain timing circuit, which is used to determine whether the energy duration generated by interference/false triggering meets the conditions for starting aerosol or water fire protection.

in:

1) R2 and C1 determine the energy duration, which can be calculated by the following formula:

T=R2Clln3.

3) Energy timing result signal: digital signal, default low level.

As shown in Figure 9, it is a result latch circuit. If there is interference/false triggering enough to meet the conditions for starting aerosol or water fire protection, the circuit can latch the result.

When the energy timing result signal is high, Q7 is turned on, and then Q6 is also turned on. Since Q6 is turned on, the anode of D1 is also high, causing Q6 and Q7 to remain in the conductive state, so even when the energy timing results The signal is pulled low and Q6 and Q7 remain on.

When the energy timing result signal changes from high level to low level, it means that the energy duration meets the conditions for starting aerosol or water fire protection. At this time, Q8 can be changed from the on state to the off state, and Q9 can be changed from the off state. down to the ON state, thereby keeping the detection result signal in the low level state continuously.

As shown in Figure 10, it is a latching interrupt circuit. If there is interference/false triggering that is not enough to meet the conditions for starting aerosol or water fire protection, the latching interrupt signal output by this circuit can interrupt the result latching circuit in time.

in:

1) R3 and C2 determine the output pulse time of the latching interrupt signal, generally only within 2ms is enough to interrupt the result latching circuit.

2) Latch the interrupt signal: The default is high-impedance state, and it becomes low-impedance state when interrupted.

Example 2

On the basis of embodiment 1, its using method is as follows:

In step 1, the false trigger detection circuit of the fire-fighting equipment of Embodiment 1 is used to replace the fire-fighting equipment and be installed in the power exchange cabinet,

Step 2. Then run the power exchange cabinet in the actual environment or in the laboratory to simulate various environmental conditions, and then check whether the storage device records the latch sent by the triggering latch circuit in the absence of fire conditions. signal, and review the environmental parameters sensed by the fire-fighting sensing device when the latched signal was recorded.

Step 3: When the storage device records the latch signal sent by the trigger latch circuit, adjust the sensing threshold of the fire-fighting sensing device, and then repeat step 2; the fire-fighting sensing device includes a temperature sensor and a smoke sensor;

Step 4. After repeating Step 2, carry out forward detection. The forward detection is to ignite an open fire that should trigger fire-fighting equipment in the power exchange cabinet;

Step 5. If it is not found that the trigger latch circuit does not send the latch signal after the forward detection, replace the model of the fire-fighting sensing equipment or the model of the components in the power exchange cabinet, or re-arrange the components in the power exchange cabinet and then re-install. test.

Example 3

In order to reduce the equipment debugging time in Embodiment 2, the following improvements can be made:

Step 1: Use the fire-fighting equipment false trigger detection circuit of Example 1 to replace the fire-fighting equipment and install it in the power exchange cabinet, and at the same time, set a magnetic intensity sensor near the fire-fighting sensing equipment;

Step 2. Then run the power exchange cabinet in the actual environment or in the laboratory to simulate various environmental conditions, and then check whether the storage device records the latch sent by the triggering latch circuit in the absence of fire conditions. signal, and review the environmental parameters sensed by the fire-fighting sensing device when the latched signal was recorded. When the storage device records the latch signal sent by the triggering latch circuit, the magnetic intensity sensed by the magnetic intensity sensor is recorded at the same time; then the temperature, smoke concentration and magnetic intensity values when the latch signal appears in the record of the storage device are recorded in the battery replacement. In the cabinet system, when the same temperature, smoke concentration and magnetic strength occur again, the control fire equipment will not start; when the accumulated data volume is greater than 200, enter the LSTM neural network for training, and load the trained LSTM neural network In the system of the power exchange cabinet, whether the fire fighting equipment is activated is controlled in real time according to the received temperature, smoke concentration and magnetic strength signals.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should The technical solutions of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A fire-fighting equipment false trigger detection circuit, characterized in that it comprises an energy absorption circuit electrically connected with a fire-fighting equipment interface; the energy absorption circuit is electrically connected with an energy level detection circuit; the energy level detection circuit is electrically connected with an energy time domain timing a circuit and a latch interruption circuit; the energy time domain timing circuit and the latch interruption circuit are electrically connected to the trigger latch circuit, and the trigger latch circuit is electrically connected with a feedback port; The energy absorption circuit is used to simulate the starting circuit of the fire fighting equipment, and outputs the trigger signal according to the simulated fire fighting equipment; The energy level detection circuit is used to detect whether the trigger signal output by the energy absorption circuit reaches the start-up standard of the fire-fighting equipment. When the strength of the trigger signal reaches the start-up standard of the fire-fighting equipment, the energy time domain timing circuit starts timing, and the strength of the trigger signal reaches the start-up standard of the fire-fighting equipment. When the preset threshold causes the fire-fighting equipment to start, the triggering latch circuit will determine that a fire-fighting equipment false trigger has occurred and the result will be latched and transmitted to the storage device through the feedback port; if the time counted by the energy time domain timing circuit is lower than the fire-fighting equipment When the threshold is activated, the latch interrupt circuit interrupts the latch process that triggers the latch circuit. 2. The fire-fighting equipment false trigger detection circuit according to claim 1, wherein the energy absorption circuit comprises a first noise discharge resistor (R1) and a fourth energy-absorbing resistor (R1) that are electrically connected to the fire-fighting equipment interface. R4), the fourth energy absorbing resistor (R4) is electrically connected with the fifth sampling resistor (R5); the fourth energy absorbing resistor (R4) and the fifth sampling resistor (R5) are connected in series with the first noise bleeder resistor (R1) ) in parallel, and the third stabilizing capacitor (C3) in parallel. 3. The fire-fighting equipment false trigger detection circuit according to claim 1, wherein the energy absorption circuit comprises a Zener diode (Z1) electrically connected to the fire-fighting equipment interface and the drain of the second MOS tube (Q2), which stabilizes The voltage diode (Z1) is electrically connected with the fifteenth resistor (R15) and the fourteenth resistor (R14), and the fourteenth resistor (R14) is electrically connected with the base of the fifth transistor (Q5); the fifth transistor The collector of the tube (Q5) is electrically connected to the tenth resistor (R10), the twelfth resistor (R12) and the gate of the fourth MOS tube (Q4); the drain of the gate of the fourth MOS tube (Q4) is electrically connected to the gate of the fourth MOS tube (Q4). The gate of the ninth resistor (R9), the tenth resistor (R10) and the third MOS transistor (Q3); the drain of the third MOS transistor (Q3) is electrically connected to the seventh resistor (R7) and the second MOS transistor (Q2) The gate of the MOSFET; the seventh resistor (R7) and the ninth resistor (R9) are both electrically connected to the drain of the second MOS transistor (Q2); the source of the second MOS transistor (Q2) is electrically connected to the eighth resistor (R8) , the eighth resistor (R8) is electrically connected to the thirteenth resistor (R13); the source of the fourth MOS transistor (Q4) is electrically connected to the thirteenth resistor (R13), the source of the third MOS transistor (Q3), the eleventh resistor Resistor (R11), the twelfth resistor (R12), the emitter of the fifth transistor (Q5) and the fifteenth resistor (R15). 4. The false trigger detection circuit of fire protection equipment according to claim 1, wherein the energy level detection circuit comprises a twenty-fourth adjustable resistor (R24) electrically connected to the energy absorption circuit, and the twenty-fourth The adjustable resistor (R24) is electrically connected to the second Zener diode (Z2) and the positive electrode of the operational amplifier (U3); the negative electrode of the operational amplifier (U3) is electrically connected to the twenty-sixth adjustable resistor (R26) and the second The seventeenth adjustable resistor (R27) and the twenty-sixth adjustable resistor (R26) are electrically connected to the twenty-eighth resistor (R38) and the fifth pin of the operational amplifier (U3), and the twenty-eighth resistor (R38) is electrically connected to Connect to the collector of the thirteenth tube (Q10), and the emitter of the collector of the thirteenth tube (Q10) is electrically connected to the second pin of the operational amplifier (U3), and the twenty-seventh adjustable resistor (R27 ), the twenty-fifth adjustable resistor (R25) and the second Zener diode (Z2), the twenty-fifth adjustable resistor (R25) is electrically connected to the anode of the operational amplifier (U3); the thirteenth diode (Q10) A twenty-ninth resistor (R29) is electrically connected to the base of the 29th resistor (R29), and the twenty-ninth resistor (R29) is electrically connected to the first pin of the operational amplifier (U3). 5. The fire-fighting equipment false trigger detection circuit according to claim 1, wherein the energy time-domain timing circuit comprises a first chip (U1), the sixth pin and the seventh lead of the first chip (U1) The pin is electrically connected with a second resistor (R2) and a first capacitor (C1); the second resistor (R2) is electrically connected with the fourth pin and the eighth pin of the first chip (U1); the first capacitor (C1) is electrically connected A fourth capacitor (C4) is connected, and the fourth capacitor (C4) is electrically connected to the fifth pin of the first chip (U1). 6. The fire-fighting equipment false trigger detection circuit according to claim 1, wherein the latching interrupt circuit comprises a second chip (U2), the sixth pin and the seventh pin of the second chip (U2) Both are electrically connected with a third resistor (R3) and a second capacitor (C2); the third resistor (R3) is electrically connected to the fourth pin and the eighth pin of the second chip (U2); the second capacitor (C2) is electrically connected The fifth capacitor (C5) and the emitter of the first transistor (Q1) are connected, and the fifth capacitor (C5) is electrically connected to the fifth pin (5); the third pin of the second chip (U2) is electrically connected There is a sixth resistor (R6), and the sixth resistor (R6) is electrically connected to the base of the first transistor (Q1). 7. The false trigger detection circuit of fire protection equipment according to claim 1, wherein the trigger latch circuit comprises a second diode (D2), the positive pole of the second diode (D2) and the energy time domain The timing circuit is electrically connected, and the negative electrode is electrically connected to the latch interrupt circuit; the negative electrode of the second diode (D2) is electrically connected with the twentieth resistor (R20), the negative electrode of the first diode (D1) and the seventh MOS tube. The gate of (Q7); the source of the seventh MOS transistor (Q7) is electrically connected to the twentieth resistor (R20), the twenty-first resistor (R21), the source of the eighth MOS transistor, and the twenty-third resistor ( R23) and the source of the ninth MOS transistor (Q9) are grounded; the drain of the seventh MOS transistor (Q7) is electrically connected to an eighteenth resistor (R18), and the eighteenth resistor (R18) is electrically connected to the eighteenth resistor (R18). The seventeenth resistor (R17) and the gate of the sixth MOS transistor (Q6); the source electrode of the sixth MOS transistor (Q6) is electrically connected to the negative electrode and the twenty-second resistor (R22), the sixth MOS transistor (Q6) The drain is electrically connected to the seventeenth resistor (R17) and the sixteenth resistor (R16); the anode of the second diode (D2) is electrically connected to the nineteenth resistor (R19), the twenty-first resistor (R21) and the The gates of the eight MOS transistors (Q8), and the drains of the eighth MOS transistors (Q8) are electrically connected to the gates of the ninth MOS transistors (Q9). 8. A method for detecting false triggering of fire-fighting equipment, comprising the steps of: Step 1. Use the false trigger detection circuit of fire protection equipment described in any one of claims 1-7 to replace the fire protection equipment and install it in the power exchange cabinet, Step 2. Then run the power exchange cabinet in the actual environment or in the laboratory to simulate various environmental conditions, and then check whether the storage device records the latch sent by the triggering latch circuit in the absence of fire conditions. signal, and review the environmental parameters sensed by the fire-fighting sensing device when the latched signal was recorded. 9. The method for detecting false triggering of fire protection equipment according to claim 8, further comprising step 3: when the storage device records the latch signal sent by the trigger latch circuit, adjusting the sensing threshold of the fire protection sensing device , and then repeat step 2; the fire-fighting sensing equipment includes a temperature sensor and a smoke sensor; Step 4. After repeating Step 2, carry out forward detection. The forward detection is to ignite an open fire that should trigger fire-fighting equipment in the power exchange cabinet; Step 5. If it is not found that the trigger latch circuit does not send the latch signal after the forward detection, replace the model of the fire-fighting sensing equipment or the model of the components in the power exchange cabinet, or re-arrange the components in the power exchange cabinet and then re-install. test. 10. The method for detecting false triggering of firefighting equipment according to claim 8, characterized in that, in the first step, a magnetic intensity sensor is arranged near the firefighting sensing equipment in the power exchange cabinet; when in the second step , when the storage device records the latch signal sent by the trigger latch circuit, the magnetic intensity sensed by the magnetic intensity sensor is recorded at the same time; then the temperature, smoke concentration and magnetic intensity values when the latch signal appears in the record of the storage device are recorded in the replacement In the system of the electric cabinet, when the same temperature, smoke concentration and magnetic strength occur again, the control fire equipment will not start; when the accumulated data volume is greater than 200, input the LSTM neural network for training, and the trained LSTM neural network will be used. Loaded in the system of the power exchange cabinet, it controls whether the fire fighting equipment is activated in real time according to the received temperature, smoke concentration and magnetic strength signals.

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