CN218037190U - Fire-fighting equipment false triggering detection circuit - Google Patents
Fire-fighting equipment false triggering detection circuit Download PDFInfo
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- CN218037190U CN218037190U CN202221809622.5U CN202221809622U CN218037190U CN 218037190 U CN218037190 U CN 218037190U CN 202221809622 U CN202221809622 U CN 202221809622U CN 218037190 U CN218037190 U CN 218037190U
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Abstract
The utility model discloses a false triggering detection circuit of fire fighting equipment, which comprises an energy absorption circuit electrically connected with an interface of the fire fighting equipment; 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 utility model discloses can reduce the cost of the verification of control panel electric start scheme, promote the stability of product and the public praise in market.
Description
Technical Field
The utility model relates to an electricity field especially relates to a fire-fighting equipment false triggering detection circuit.
Background
The immature easy spurious triggering of rack fire control electric starting circuit scheme on the market leads to whole fire extinguishing system to start at present, especially aerosol fire extinguisher and water fire control fire extinguishing equipment, the spurious triggering can lead to the rack under the state of no trouble/battery no heat runaway risk, start fire extinguishing system and lead to the rack to distribute a large amount of solid-state particles or be attached to a large amount of water, lead to the rack can not reuse, need return the producer and reprocess and just can put in market again, lead to like this that the fortune dimension work load increases, the maintenance cost uprises, the not enough scheduling problem of rack capacity of transportation.
Besides the problem that smoke, temperature sensors and the like are possibly too sensitive, due to the fact that software and hardware systems in the power exchange cabinet are complex, electromagnetic equipment is more, and the environment is complex, false alarm of fire fighting equipment is caused due to the fact that the sensors transmit wrong signals caused by electromagnetic interference and the like.
For example: 1) Charging power supply (high power supply in cabinet):
in the operating state of the charging power supply, especially under the condition of full-load output, the main internal interference sources are: switching circuits, rectifier diodes of rectifier circuits, stray parameters, etc.
The switch circuit consists of a switch tube and a high-frequency transformer. Distributed capacitance exists between the switch tube and the radiating fins thereof, and the shell and the lead wire in the power supply, and du/dt generated by the distributed capacitance has pulse with larger amplitude, wider frequency band and rich harmonic wave. The switch tube load is a primary coil of the high-frequency transformer and is an inductive load. When the originally conducted switching tube is turned off, the leakage inductance of the high-frequency transformer generates counter potential E = -Ldi/dt, the value of the counter potential E = -Ldi/dt is in direct proportion to the current change rate of the collector and the leakage inductance, and the counter potential E = -Ldi/dt is superposed on the turn-off voltage to form a turn-off voltage spike, so that interference is formed.
When the output rectifier diode is cut off, a reverse current exists, and the time for the output rectifier diode to recover to the zero point is related to factors such as junction capacitance and the like. It can generate great current change di/dt under the influence of leakage inductance and other distribution parameters of the transformer, generate strong high-frequency interference, and the frequency can reach dozens of megahertz.
Due to the operation at higher frequencies, the characteristics of the low frequency components in the switching power supply may change, thereby generating noise. At high frequencies, stray parameters greatly affect the characteristics of the coupling path, and distributed capacitance becomes the path for electromagnetic interference.
Electromagnetic lock:
the principle of the electromagnetic lock is that electricity generates magnetism, and a magnetic field generated by the electromagnetic lock is easy to radiate to a space in the cabinet, and for a charging and exchanging cabinet, generally, because each cabin is required to be provided with an aerosol fire extinguisher, an electric starting circuit of the electromagnetic lock is arranged on a cabin control panel and is close to the electromagnetic lock, so once an unlocking action is performed, the electric starting circuit is easy to interfere.
A relay;
the principle of the electromagnetic contactor is that after an electromagnetic coil of the contactor is electrified, a strong magnetic field is generated, so that a static iron core generates electromagnetic attraction to attract an armature and drive a contact to act. Therefore, the relay coil has strong inductance when being electrified, and the inductance energy can not be released when being switched off, so that reverse high-voltage electromotive force is generated, and the system is interfered.
And fire control electric starting circuit scheme stability need constantly the product release the pilot test mistake, and current test mode, every pilot test mistake all can lead to fire-fighting equipment to start, leads to the loss of rack and fire-fighting equipment, therefore its pilot test mistake cost is high. In addition, after the fire-fighting equipment triggers by mistake, because can cause the damage to the inside equipment of switch cabinet, lead to being difficult to find the reason that triggers by mistake, consequently can only slightly heighten the detection start threshold value of relevant smoke transducer, temperature sensor etc. but this leads to the sensor response passivation again easily, can't in time start in the face of actual conflagration. There is therefore a need for improvements to existing detection devices and methods.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a fire-fighting equipment false triggering detection circuit.
The purpose of the utility model is realized through the following technical scheme:
a fire fighting equipment false triggering detection circuit 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 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 energy absorption circuit is used for simulating a starting circuit of the fire fighting equipment and outputting a trigger signal according to the simulated fire fighting equipment;
the energy magnitude detection circuit is used for detecting whether the trigger signal output by the energy absorption circuit reaches the starting standard of the fire-fighting equipment, when the strength of the trigger signal reaches the starting standard of the fire-fighting equipment, the energy time domain timing circuit starts timing, and when the strength of the trigger signal reaches a preset threshold value causing the fire-fighting equipment to be started, the trigger latch circuit judges that one-time false triggering of the fire-fighting equipment occurs and latches the result and transmits the result to the storage equipment through the feedback port; if the time counted by the energy time domain timing circuit is lower than the threshold value for starting the fire fighting equipment, the latch interruption circuit interrupts the latch process of the trigger latch circuit.
In a further improvement, the energy absorption circuit comprises a first noise discharge resistor R1 and a fourth energy absorption resistor R4 which are electrically connected with the fire fighting equipment interface, and the fourth energy absorption resistor R4 is electrically connected with a fifth sampling resistor R5; the fourth energy absorption resistor R4 and the fifth sampling resistor R5 are connected in series and then connected in parallel with the first noise release resistor R1, and are connected in parallel with the third voltage stabilizing capacitor C3.
In a further improvement, the energy absorption circuit comprises a voltage stabilizing diode Z1 electrically connected with the fire-fighting equipment interface and a drain electrode of a second MOS (metal oxide semiconductor) tube Q2, the voltage stabilizing diode Z1 is electrically connected with a fifteenth resistor R15 and a fourteenth resistor R14, and the fourteenth resistor R14 is electrically connected with a base electrode of a fifth triode Q5; a collector of the fifth triode Q5 is electrically connected with the tenth resistor R10, the twelfth resistor R12 and the grid of the fourth MOS transistor Q4; the drain electrode of the grid electrode of the fourth MOS tube Q4 is electrically connected with the ninth resistor R9, the tenth resistor R10 and the grid electrode of the third MOS tube Q3; the drain electrode of the third MOS transistor Q3 is electrically connected with the seventh resistor R7 and the grid electrode of the second MOS transistor Q2; the seventh resistor R7 and the ninth resistor R9 are both electrically connected with the drain electrode of the second MOS transistor Q2; the source electrode of the second MOS transistor Q2 is electrically connected with an eighth resistor R8, and the eighth resistor R8 is electrically connected with a thirteenth resistor R13; the source electrode of the fourth MOS transistor Q4 is electrically connected to the thirteenth resistor R13, the source electrode of the third MOS transistor Q3, the eleventh resistor R11, the twelfth resistor R12, the emitter electrode of the fifth triode Q5, and the fifteenth resistor R15.
In a further improvement, the energy level detection circuit comprises a twenty-fourth adjustable resistor R24 electrically connected with the energy absorption circuit, and the twenty-fourth adjustable resistor R24 is electrically connected with the second zener diode Z2 and the anode of the operational amplifier U3; a negative electrode of the operational amplifier U3 is electrically connected with a twenty-sixth adjustable resistor R26 and a twenty-seventh adjustable resistor R27, the twenty-sixth adjustable resistor R26 is electrically connected with a twenty-eighth resistor R38 and a fifth pin of the operational amplifier U3, the twenty-eighth resistor R38 is electrically connected with a collector of a thirteenth polar tube Q10, an emitter of the collector of the thirteenth polar tube Q10 is electrically connected with a second pin of the operational amplifier U3, the twenty-seventh adjustable resistor R27, a twenty-fifth adjustable resistor R25 and a second voltage-stabilizing diode Z2, and the twenty-fifth adjustable resistor R25 is electrically connected with an anode of the operational amplifier U3; the base electrode of the thirteenth polar tube Q10 is electrically connected with a twenty-ninth resistor R29, and the twenty-ninth resistor R29 is electrically connected with the first pin of the operational amplifier U3.
In a further improvement, the energy time domain timing circuit comprises a first chip U1, and a sixth pin and a 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 with 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 a fifth pin of the first chip U1.
In a further improvement, the latch interrupt circuit comprises a second chip U2, and a sixth pin and a 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 with a fourth pin and an eighth pin of the second chip U2; the second capacitor C2 is electrically connected with a fifth capacitor C5 and an emitter of the first triode Q1, and the fifth capacitor C5 is electrically connected with a fifth pin 5; and a third pin of the second chip U2 is electrically connected with a sixth resistor R6, and the sixth resistor R6 is electrically connected with the base electrode of the first triode Q1.
In a further improvement, the trigger latch circuit comprises a second diode D2, the anode of the second diode D2 is electrically connected with the energy time domain timing circuit, and the cathode of the second diode D2 is electrically connected with the latch interrupt circuit; the cathode of the second diode D2 is electrically connected with a twentieth resistor R20, the cathode of the first diode D1 and the gate of the seventh MOS transistor Q7; the source electrode of the seventh MOS transistor Q7 is electrically connected with the twentieth resistor R20, the twenty-first resistor R21, the source electrode of the eighth MOS transistor, the twenty-third resistor R23 and the source electrode of the ninth MOS transistor Q9 and is grounded; the drain electrode of the seventh MOS transistor Q7 is electrically connected with an eighteenth resistor R18, and the eighteenth resistor R18 is electrically connected with a seventeenth resistor R17 and the gate electrode of the sixth MOS transistor Q6; a cathode and a twenty-second resistor R22 electrically connected to the source of the sixth MOS transistor Q6, and a drain of the sixth MOS transistor Q6 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 gate of the eighth MOS transistor Q8, and the drain of the eighth MOS transistor Q8 is electrically connected to the gate of the ninth MOS transistor Q9.
A fire fighting equipment false triggering detection method comprises the following steps:
step one, the fire-fighting equipment false triggering detection circuit is adopted to replace fire-fighting equipment to be installed in a power exchange cabinet,
and secondly, the power transformation cabinet is placed in an actual environment to operate or placed in a laboratory to simulate various environmental conditions to operate, whether a latch signal sent by a trigger latch circuit is recorded in the storage equipment under the condition of no fire condition is checked, and environmental parameters sensed by the fire-fighting sensing equipment when the latch signal is recorded are checked.
The further improvement comprises a third step of adjusting the sensing threshold value of the fire-fighting sensing equipment when the storage equipment records a latch signal which triggers the latch circuit to send, and then repeating the second step; the fire fighting sensing equipment comprises a temperature sensor and a smoke sensor;
after the step two is repeated, carrying out forward detection, namely igniting open fire which should trigger fire-fighting equipment in the battery replacement cabinet;
and step five, if the fact that the trigger latch circuit does not send the latch signal is not found after the forward detection, replacing the model of the fire-fighting sensing equipment or the model of the components in the power conversion cabinet or retesting the components in the power conversion cabinet after the components are rearranged.
In the first step, a magnetic strength sensor is arranged near the fire fighting sensing equipment in the power exchange cabinet;
when the storage device records a latch signal which triggers the latch circuit to send in the second step, the magnetic strength sensed by the magnetic strength sensor is recorded at the same time; then, the values of the temperature, the smoke concentration and the magnetic strength when the latching signal appears in the storage equipment record are recorded in a system of the battery replacing cabinet, and when the same temperature, smoke concentration and magnetic strength appear again, the fire fighting equipment is controlled not to be started; and when the accumulated data volume is more than 200, inputting the LSTM neural network for training, loading the trained LSTM neural network in a system of the battery changing cabinet, and controlling whether the fire-fighting equipment is started or not in real time according to the received signals of the temperature, the smoke concentration and the magnetic strength.
Compared with the prior art, the utility model discloses a following beneficial effect has:
1. the utility model discloses can replace the fire-fighting equipment to carry out the false triggering test, can take notes the condition that the false triggering appears to reduce the loss after the fire-fighting equipment false triggering.
2. Different interfaces can be adopted for different fire fighting equipment and adjusted according to requirements.
3. The utility model discloses still provide and gathered, then the record to the false trigger signal to reduce the advantage of the equipment debug time and the degree of difficulty.
Drawings
The present invention is further explained by using the attached drawings, but the content in the attached drawings does not constitute any limitation to the present invention.
FIG. 1 is a schematic diagram of an overall structure of a false triggering detection circuit of a fire fighting device;
FIG. 2 is a schematic diagram of an aerosol electrical start-up interface circuit;
FIG. 3 is a schematic circuit diagram of a water fire protection electric start-up interface;
FIG. 4 is a circuit schematic of a feedback interface;
FIG. 5 is a schematic diagram of an electrically activated aerosol energy absorption circuit;
FIG. 6 is a schematic diagram of an energy absorption circuit for water fire protection electric start-up;
FIG. 7 is a schematic diagram of a circuit configuration of an energy level detection circuit;
FIG. 8 is a schematic diagram of a circuit structure of an energy time domain timing circuit;
FIG. 9 is a circuit diagram of a result latch circuit;
FIG. 10 is a circuit diagram of a latch interrupt circuit;
fig. 11 is a schematic view of a usage flow of the fire fighting equipment false triggering detection circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.
Example 1
A fire apparatus false trigger detection circuit as shown in fig. 1, comprising an energy absorption circuit electrically connected to a fire apparatus 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 energy absorption circuit is used for simulating a starting circuit of the fire fighting equipment and outputting a trigger signal according to the simulated fire fighting equipment;
the energy magnitude detection circuit is used for detecting whether the trigger signal output by the energy absorption circuit reaches the starting standard of the fire-fighting equipment, when the strength of the trigger signal reaches the starting standard of the fire-fighting equipment, the energy time domain timing circuit starts timing, and when the strength of the trigger signal reaches a preset threshold value causing the fire-fighting equipment to be started, the trigger latch circuit judges that one-time fire-fighting equipment false trigger occurs and latches the result and transmits the result to the storage equipment through the feedback port; if the time timed by the energy time domain timing circuit is lower than the threshold value for starting the fire fighting equipment, the latch interruption circuit interrupts the latch process of the trigger latch circuit.
As shown in fig. 2, the aerosol electric starting interface circuit is used for interfacing with an electric starting interface in a charging and switching cabinet with an aerosol fire fighting system or a control board in other fire fighting equipment. The energy input (aerosol) was used for the analog signal, initial state 0mA.
As shown in fig. 3, the circuit of the fire protection electric starting interface is used for docking with an electric starting interface in a control board in a charging and replacing battery cabinet or other fire protection equipment with a fire protection system.
Energy input (water fire) was used for analog signals, 12V initial state.
As shown in fig. 4, the circuit as a feedback interface is connected to a data acquisition interface in a control board in a charging and switching cabinet with a fire protection system or other fire protection equipment, and is used to determine whether there is a risk of interference/false triggering in the electrical start of the control system.
Detection result signal: digital signal, default high.
As shown in fig. 5, the energy absorption circuit for aerosol electric start is used to absorb energy generated by interference/false trigger, which is equivalent to the energy threshold required by aerosol electric start under real condition, for example, the energy values required by common aerosol electric start are: 600mA, can be absorbed by the part of the circuit.
Wherein:
1) R1 is a noise leakage resistor: the energy equivalent to the noise generated in real condition is discharged by the discharging resistor;
2) C3 is a voltage-stabilizing capacitor: for converting current into stable voltage value in voltage;
3) R4 is energy absorbing resistance: the amount of energy required for the electroaerosol to be absorbed, such as 600 mA;
4) R5 is a sampling resistor: sampling for converting current into voltage;
5) Energy absorption signal: analog signal, initial state 0V.
The circuit is electrically started for aerosol, and the electrical starting is driven by constant current, so that the circuit can simulate constant current driving equipment, and for constant current driving equipment with different current values, the values of R4 and R5 are adjusted.
As shown in fig. 6, the energy absorption circuit for starting the fire-fighting water supply is used for absorbing interference energy, which is equivalent to the energy threshold required for starting the fire-fighting water supply in real situations, for example, the energy values required for starting the fire-fighting water supply commonly used are as follows: 6.3V/500mA, can be absorbed by the partial circuit.
Wherein:
1) The Z1 and the Q5 are used for adjusting the threshold of voltage in the energy value required by the electricity starting for water consumption prevention; the value of the voltage drop depends on the conduction voltage drop between the voltage stabilizing value of the Z1 voltage stabilizing tube and the Q5 be;
2) R14 may be used to fine tune the voltage threshold in the amount of energy required for water consumption to prevent electrical start-up, with the fine tuning value depending on the resistance of R14;
3) R8 is energy absorbing resistance: for absorbing the current in the amount of energy required for the fire-fighting electric start-up of water, such as 500 mA;
4) R5 is a sampling resistor: sampling for converting current into voltage;
5) Energy absorption signal: analog signal, initial state 0V.
The circuit is electrically started for water fire protection, and the water fire protection is driven by constant voltage, so that the circuit can simulate constant voltage driven equipment, and for the constant voltage driven equipment with different voltage values, the conduction voltage drop value between the voltage stabilizing value of the lower voltage stabilizing tube and Q5 be and the value of R15 are only required to be adjusted.
As shown in fig. 7, an energy level detection circuit is used to determine whether the energy generated by the disturbance/false trigger satisfies an energy threshold for initiating aerosol or water fire protection.
Wherein:
1) R24 and R25 or R26 and R27 can be adjusted to adjust the energy threshold;
2) Energy level judging signal: digital signal, default high.
Fig. 8 is an energy time domain timing circuit for determining whether the energy duration generated by the disturbance/false trigger satisfies the conditions for starting aerosol or water fire protection.
Wherein:
1) R2 and C1 determine the energy duration, which can be calculated as follows:
T＝R2C1ln3。
3) Energy timing result signal: digital signal, default low.
As shown in fig. 9, a result latch circuit can latch the result if there is enough glitch/false trigger to satisfy the conditions for starting aerosol or water fire protection.
When the energy timing result signal is high, Q7 is conducted, and Q6 is also conducted, since Q6 is conducted, the anode of D1 is also high, so that Q6, Q7 are kept in a conducting state, and therefore, even when the energy timing result signal is pulled down to low level, Q6, Q7 are kept in a conducting state.
When the energy timing result signal changes from high level to low level, which indicates that the energy duration time meets the condition of starting aerosol or water fire protection, at the moment, Q8 can be changed into a cut-off state from a conducting state, and Q9 is changed into a conducting state from a cut-off state, so that the detection result signal is continuously kept in a low level state.
As shown in fig. 10, the latch interrupt circuit is a latch interrupt circuit, and if the interference/false trigger is not enough to satisfy the condition of starting aerosol or fire protection, the latch interrupt signal output by the circuit can interrupt the result latch circuit in time.
Wherein:
1) R3 and C2 determine the pulse time for the latch interrupt signal output, and generally within 2ms is sufficient to interrupt the resulting latch circuit.
2) Latching the interrupt signal: the high impedance state is defaulted and the interrupt becomes the low impedance state.
Example 2
On the basis of example 1, the method of use is as follows:
step one, adopting the fire fighting equipment false triggering detection circuit of the embodiment 1 to replace the fire fighting equipment to be installed
In the electricity-changing cabinet, the power supply is connected with the power supply,
and secondly, the power transformation cabinet is placed in an actual environment to operate or placed in a laboratory to simulate various environmental conditions to operate, whether a latch signal sent by a trigger latch circuit is recorded in the storage equipment under the condition of no fire condition is checked, and environmental parameters sensed by the fire-fighting sensing equipment when the latch signal is recorded are checked.
Step three, when the storage device records a latch signal which triggers the latch circuit to send, adjusting the sensing threshold value of the fire-fighting sensing device, and then repeating the step two; the fire fighting sensing equipment comprises a temperature sensor and a smoke sensor;
after the step two is repeated, carrying out forward detection, namely igniting open fire which should trigger fire-fighting equipment in the battery replacement cabinet;
and step five, if the fact that the trigger latch circuit does not send the latch signal is not found after the forward detection, replacing the model of the fire-fighting sensing equipment or the model of the components in the power conversion cabinet or retesting the components in the power conversion cabinet after the components are rearranged.
Example 3
In order to reduce the device commissioning time in embodiment 2, the following modifications may be made:
the method comprises the following steps that firstly, the fire fighting equipment false triggering detection circuit in the embodiment 1 is adopted to replace fire fighting equipment to be installed in a power exchange cabinet, and meanwhile, a magnetic strength sensor is arranged near the fire fighting sensing equipment;
and secondly, the power transformation cabinet is placed in an actual environment to operate or placed in a laboratory to simulate various environmental conditions to operate, whether a latch signal sent by a trigger latch circuit is recorded in the storage equipment under the condition of no fire condition is checked, and environmental parameters sensed by the fire-fighting sensing equipment when the latch signal is recorded are checked. When the storage equipment records a latch signal which triggers the latch circuit to send, the storage equipment simultaneously records the magnetic strength sensed by the magnetic strength sensor; then, the values of the temperature, the smoke concentration and the magnetic strength when the latching signal appears in the storage equipment record are recorded in a system of the battery replacing cabinet, and when the same temperature, smoke concentration and magnetic strength appear again, the fire fighting equipment is controlled not to be started; when the accumulated data volume is larger than 200, inputting the LSTM neural network for training, loading the trained LSTM neural network in a system of the battery replacing cabinet, and controlling whether the fire-fighting equipment is started in real time according to the received signals of the temperature, the smoke concentration and the magnetic strength.
It should be finally 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, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. A fire-fighting equipment false triggering detection circuit is characterized by 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 energy absorption circuit is used for simulating a starting circuit of the fire fighting equipment and outputting a trigger signal according to the simulated fire fighting equipment;
the energy magnitude detection circuit is used for detecting whether the trigger signal output by the energy absorption circuit reaches the starting standard of the fire-fighting equipment, when the strength of the trigger signal reaches the starting standard of the fire-fighting equipment, the energy time domain timing circuit starts timing, and when the strength of the trigger signal reaches a preset threshold value causing the fire-fighting equipment to be started, the trigger latch circuit judges that one-time false triggering of the fire-fighting equipment occurs and latches the result and transmits the result to the storage equipment through the feedback port; if the time timed by the energy time domain timing circuit is lower than the threshold value for starting the fire fighting equipment, the latch interruption circuit interrupts the latch process of the trigger latch circuit.
2. The fire apparatus false trigger detection circuit according to claim 1, wherein the energy absorption circuit includes a first noise release resistor (R1) and a fourth energy absorption resistor (R4) electrically connected to the fire apparatus interface, and the fourth energy absorption resistor (R4) is electrically connected to a fifth sampling resistor (R5); the fourth energy absorption resistor (R4) and the fifth sampling resistor (R5) are connected in series, then are connected with the first noise leakage resistor (R1) in parallel, and are connected with the third voltage stabilizing capacitor (C3) in parallel.
3. The fire fighting equipment false triggering detection circuit according to claim 1, wherein the energy absorption circuit comprises a voltage stabilizing diode (Z1) and a drain electrode of a second MOS transistor (Q2), the voltage stabilizing diode (Z1) is electrically connected with a fifteenth resistor (R15) and a fourteenth resistor (R14), and the fourteenth resistor (R14) is electrically connected with a base electrode of a fifth triode (Q5); a collector of the fifth triode (Q5) is electrically connected with the tenth resistor (R10), the twelfth resistor (R12) and a grid electrode of the fourth MOS transistor (Q4); the drain electrode of the grid electrode of the fourth MOS tube (Q4) is electrically connected with the ninth resistor (R9), the tenth resistor (R10) and the grid electrode of the third MOS tube (Q3); the drain electrode of the third MOS tube (Q3) is electrically connected with the seventh resistor (R7) and the grid electrode of the second MOS tube (Q2); the seventh resistor (R7) and the ninth resistor (R9) are both electrically connected with the drain electrode of the second MOS tube (Q2); the source electrode of the second MOS tube (Q2) is electrically connected with an eighth resistor (R8), and the eighth resistor (R8) is electrically connected with a thirteenth resistor (R13); the source electrode of the fourth MOS tube (Q4) is electrically connected with the thirteen resistor (R13), the source electrode of the third MOS tube (Q3), the eleventh resistor (R11), the twelfth resistor (R12), the emitter electrode of the fifth triode (Q5) and the fifteenth resistor (R15).
4. The fire apparatus false trigger detection circuit according to claim 1, wherein the energy level detection circuit includes a twenty-fourth adjustable resistor (R24) electrically connected to the energy absorption circuit, the twenty-fourth adjustable resistor (R24) being 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 a twenty-sixth adjustable resistor (R26) and a twenty-seventh adjustable resistor (R27), the twenty-sixth adjustable resistor (R26) is electrically connected with a twenty-eighth resistor (R38) and a fifth pin of the operational amplifier (U3), the twenty-eighth resistor (R38) is electrically connected with a collector electrode of a thirteenth polar tube (Q10), an emitter electrode of the collector electrode of the thirteenth polar tube (Q10) is electrically connected with a second pin of the operational amplifier (U3), the twenty-seventh adjustable resistor (R27), a twenty-fifth adjustable resistor (R25) and a second voltage stabilizing diode (Z2), and the twenty-fifth adjustable resistor (R25) is electrically connected with the positive electrode of the operational amplifier (U3); the base electrode of the thirteenth polar tube (Q10) is electrically connected with a twenty-ninth resistor (R29), and the twenty-ninth resistor (R29) is electrically connected with 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), and a second resistor (R2) and a first capacitor (C1) are electrically connected to a sixth pin and a seventh pin of the first chip (U1); 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 with a fourth capacitor (C4), and the fourth capacitor (C4) is electrically connected with a fifth pin of the first chip (U1).
6. The fire fighting equipment false trigger detection circuit according to claim 1, wherein the latch interrupt circuit comprises a second chip (U2), and a third resistor (R3) and a second capacitor (C2) are electrically connected to a sixth pin and a seventh pin of the second chip (U2); the third resistor (R3) is electrically connected with the fourth pin and the eighth pin of the second chip (U2); the second capacitor (C2) is electrically connected with a fifth capacitor (C5) and an emitter of the first triode (Q1), and the fifth capacitor (C5) is electrically connected with a fifth pin (5); and a third pin of the second chip (U2) is electrically connected with a sixth resistor (R6), and the sixth resistor (R6) is electrically connected with the base electrode of the first triode (Q1).
7. The fire fighting equipment false trigger detection circuit according to claim 1, wherein the trigger latch circuit comprises a second diode (D2), an anode of the second diode (D2) is electrically connected with the energy time domain timing circuit, and a cathode of the second diode is electrically connected with the latch interrupt circuit; a cathode of the second diode (D2) is electrically connected with a twentieth resistor (R20), a cathode of the first diode (D1) and a grid electrode of the seventh MOS tube (Q7); the source electrode of the seventh MOS transistor (Q7) is electrically connected with the twentieth resistor (R20), the twenty-first resistor (R21), the source electrode of the eighth MOS transistor, the twenty-third resistor (R23) and the source electrode of the ninth MOS transistor (Q9) and is grounded; the drain electrode of the seventh MOS transistor (Q7) is electrically connected with an eighteenth resistor (R18), and the eighteenth resistor (R18) is electrically connected with a seventeenth resistor (R17) and the grid electrode of the sixth MOS transistor (Q6); a cathode of the sixth MOS transistor (Q6) is electrically connected with a twenty-second resistor (R22), and a drain of the sixth MOS transistor (Q6) is electrically connected with a seventeenth resistor (R17) and a sixteenth resistor (R16); the anode of the second diode (D2) is electrically connected with a nineteenth resistor (R19), a twenty-first resistor (R21) and the grid electrode of the eighth MOS tube (Q8), and the drain electrode of the eighth MOS tube (Q8) is electrically connected with the grid electrode of the ninth MOS tube (Q9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221809622.5U CN218037190U (en) | 2022-07-14 | 2022-07-14 | Fire-fighting equipment false triggering detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221809622.5U CN218037190U (en) | 2022-07-14 | 2022-07-14 | Fire-fighting equipment false triggering detection circuit |
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