Multi-parameter fire prevention and extinguishment detector for electrical equipment detection

Abstract

The utility model discloses a multi-parameter fire prevention and extinguishment detector for electrical equipment detection. The multi-parameter fire prevention and extinguishment detector comprises a processing unit; the output end of the arc detection unit is electrically connected with the first acquisition end of the processing unit; the output end of the flame detection unit is electrically connected with the second acquisition end of the processing unit; and the control output end of the processing unit is electrically connected with the fire extinguishing driving unit. According to the multi-parameter fireproof fire extinguishing detector for electrical equipment detection provided by the embodiment of the utility model, the processing unit is simultaneously connected with the arc detection unit and the flame detection unit, so that multi-parameter detection of a fire disaster is realized, and control on the fire extinguishing driving unit is adjusted according to a detection result; therefore, effective fire extinguishing is realized on the basis of ensuring the detection accuracy.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical equipment detection with multi -parameter fire extinguishing detector belongs to fire extinguishing equipment technical field. BACKGROUND

[0002] With the continuous development of social industrialization process, electrical equipment, especially some electrical equipment closely contacted with personnel, for example rail transit vehicle, needs to add fireproof device to ensure the safety of electrical equipment and personnel. The existing rail transit vehicle is provided with various fire extinguishing detectors, such as smoke type fire detector for detecting smoke in the environment, flame type fire detector for detecting flame in the environment and temperature type fire detector for detecting temperature in the environment.

[0003] But the above respectively uses smoke type fire detector, flame type fire detector and temperature type fire detector will have certain deficiency. First, the installation space of the electrical equipment of the vehicle is limited, and installing multiple detectors will occupy a large space; moreover, simultaneously using the above three or more detectors will exist information result contradictory state, for example, smoke type fire detector does not alarm, but temperature type fire detector alarms, which will reduce the accuracy of detection. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing electrical equipment detection with multi -parameter fire extinguishing detector to ensure the accuracy of fire detection.

[0005] In order to realize the above-mentioned purpose, the utility model provides electrical equipment detection with multi -parameter fire extinguishing detector on one hand, which comprises:

[0006] Processing unit;

[0007] Arc detection unit, the output end of which is electrically connected with the first collection end of the processing unit;

[0008] Flame detection unit, the output end of which is electrically connected with the second collection end of the processing unit;

[0009] Fire extinguishing drive unit, the control output end of the processing unit is electrically connected with the fire extinguishing drive unit.

[0010] Further, the processing unit is a single-chip microcomputer.

[0011] Further, the arc detection unit comprises a photosensitive diode, a first capacitor connected in parallel with the photosensitive diode, one end of a third capacitor connected with the positive pole of the photosensitive diode, the other end of the third capacitor and one end of a third resistor and the same direction input end of a first operational amplifier, the negative pole of the photosensitive diode, the first bias end of the first operational amplifier and ground wire are electrically connected;

[0012] One end of the first resistor is connected to the first power supply, the other end of the first resistor, the other end of the third resistor, one end of the fourth resistor and one end of the fourth capacitor are electrically connected, the other end of the fourth resistor and the other end of the fourth capacitor are electrically connected to the first bias end of the first operational amplifier;

[0013] The reverse input end of the first operational amplifier is electrically connected to one end of the second resistor, one end of the fifth resistor and one end of the sixth capacitor; the other end of the second resistor is electrically connected to one end of the second capacitor, the other end of the second capacitor is electrically connected to the ground wire; the other end of the fifth resistor and the other end of the sixth capacitor are electrically connected to the output end of the first operational amplifier and one end of the seventh capacitor; the first power supply is electrically connected to the second bias end of the first operational amplifier and one end of the fifth capacitor, and the second end of the fifth capacitor is electrically connected to the ground wire;

[0014] The other end of the seventh resistor is electrically connected to the non-inverting input end of the second operational amplifier and one end of the sixth resistor, the other end of the sixth resistor is connected to the ground wire, the reverse input end of the second operational amplifier is connected to one end of the seventh resistor, one end of the eighth resistor and one end of the ninth capacitor, the other end of the eighth resistor is connected to one end of the eighth capacitor, and the other end of the eighth capacitor is connected to the ground wire; the other end of the seventh resistor and the other end of the ninth capacitor are connected to the output end of the second operational amplifier and one end of the tenth capacitor;

[0015] The other end of the tenth capacitor is connected to one end of the ninth resistor and the non-inverting input end of the third operational amplifier, the other end of the ninth resistor is connected to the ground wire, the reverse input end of the third operational amplifier is connected to one end of the tenth resistor, one end of the eleventh resistor and one end of the twelfth capacitor, the other end of the eleventh resistor is connected to one end of the eleventh capacitor, and the other end of the eleventh capacitor is connected to the ground wire; the other end of the tenth resistor and the other end of the twelfth capacitor are connected to the output end of the third operational amplifier, one end of the thirteenth capacitor and one end of the fourteenth capacitor, and the other end of the thirteenth capacitor is connected to the ground wire;

[0016] The other end of the fourteenth capacitor is connected to one end of the twelfth resistor and the non-inverting input end of the fourth operational amplifier, the reverse input end of the fourth operational amplifier is connected to one end of the thirteenth resistor, one end of the fourteenth resistor and one end of the twelfth capacitor, the other end of the fourteenth resistor is connected to one end of the fifteenth capacitor, and the other end of the fifteenth capacitor is connected to the ground wire; the other end of the thirteenth resistor and the other end of the sixteenth capacitor are connected to the output end of the fourth operational amplifier and the first acquisition end of the processing unit.

[0017] Further, the flame detection unit comprises a sensor interface, a first end of the sensor interface being connected to one end of a fifteenth resistor, one end of a seventeenth capacitor and one end of an eighteenth capacitor, the other end of the fifteenth resistor being connected to the first power supply, the other end of the seventeenth capacitor being connected to the ground wire and the other end of the eighteenth capacitor being connected to the ground wire respectively;

[0018] A second end of the sensor interface is connected to one end of a sixteenth resistor, one end of a nineteenth capacitor and one end of a twenty-first capacitor respectively, the other end of the sixteenth resistor and the other end of the nineteenth capacitor being connected to the ground wire;

[0019] The other end of the twenty-first capacitor is connected to one end of a nineteenth resistor and a same direction input end of a fifth operational amplifier; the other end of the nineteenth resistor is connected to one end of an eighteenth resistor, one end of a twentieth resistor and one end of a twenty-second capacitor respectively, the other end of the eighteenth resistor being connected to the first power supply, the other end of the twentieth resistor and the other end of the twenty-second capacitor being connected to the ground wire and a first bias end of the fifth operational amplifier; a second bias end of the fifth operational amplifier is connected to the first power supply and one end of a twenty-third capacitor, the other end of the twenty-third capacitor being connected to the ground wire;

[0020] A reverse input end of the fifth operational amplifier is connected to one end of a seventeenth resistor, one end of a twenty-first resistor and one end of a twenty-fourth capacitor, the other end of the seventeenth resistor being connected to one end of a twentieth capacitor, the other end of the twentieth capacitor being connected to the ground wire; the other end of the twenty-first resistor and the other end of the twenty-fourth capacitor being connected to an output end of the fifth operational amplifier and one end of a twenty-fifth capacitor;

[0021] The other end of the twenty-fifth capacitor is connected to one end of a twenty-fifth resistor, the other end of the twenty-fifth resistor being connected to a reverse input end of a sixth operational amplifier, one end of a twenty-seventh capacitor and one end of a twenty-sixth resistor; the other end of the twenty-seventh capacitor and the other end of the twenty-sixth resistor being connected to an output end of the sixth operational amplifier and one end of a twenty-seventh resistor; a same direction input end of the sixth operational amplifier is connected to one end of a twenty-third resistor, the other end of the twenty-third resistor being connected to one end of a twenty-second resistor, one end of a twenty-fourth resistor and one end of a twenty-sixth capacitor, the other end of the twenty-second resistor being connected to the first power supply, the other end of the twenty-fourth resistor and the other end of the twenty-sixth capacitor being connected to the ground wire;

[0022] The other end of the twenty-seventh resistor is connected to one end of a twenty-eighth capacitor, a same direction input end, a reverse input end and an output end of a seventh operational amplifier, the other end of the twenty-eighth capacitor being connected to the ground wire; the reverse input end of the seventh operational amplifier is connected to a twenty-ninth capacitor;

[0023] The other end of the twenty-ninth capacitor is connected to one end of the twenty-eighth resistor and the same direction input end of the eighth operational amplifier, the other end of the twenty-eighth resistor is connected to the ground wire; the reverse input end of the eighth operational amplifier is connected to one end of the twenty-ninth resistor, one end of the thirtieth resistor and one end of the thirtieth capacitor, the other end of the thirtieth resistor is connected to the ground wire, and the other end of the twenty-ninth resistor and the other end of the thirtieth capacitor are connected to the output end of the eighth operational amplifier and the second collection end of the processing unit.

[0024] Further, the fire extinguishing driving unit comprises a thirty-first resistor and a thirty-second resistor, wherein one end of the thirty-first resistor is electrically connected to the first control output end of the processing unit, and one end of the thirty-second resistor is electrically connected to the second control output end of the processing unit.

[0025] The other end of the thirty-first resistor is connected to one end of the thirty-first capacitor, one end of the thirty-fourth resistor and the second input end of the first optocoupler, and the other end of the thirty-first capacitor and the other end of the thirty-fourth resistor are connected to the first power supply and the first input end of the first optocoupler; the first output end of the first optocoupler is connected to the first end of the thirty-sixth resistor, the other end of the thirty-sixth resistor is connected to one end of the thirty-fifth resistor, one end of the thirty-third capacitor and the base of the clamping diode, and the other end of the thirty-fifth resistor and the other end of the thirty-third capacitor are connected to the second power supply, the collector of the Darlington tube and one end of the thirty-seventh resistor;

[0026] The other end of the thirty-second resistor is connected to one end of the thirty-third resistor, one end of the thirty-second capacitor and the first input end of the second optocoupler, the other end of the thirty-third resistor and the other end of the thirty-second capacitor are connected to the ground wire and the second input end of the second optocoupler, the first output end of the second optocoupler is connected to the second output end of the first optocoupler, the second output end of the second optocoupler is connected to the anode of the first diode, the cathode of the first diode is connected to the anode of the second diode and the signal ground wire; the cathode of the second diode is connected to the cathode of the fire extinguishing device;

[0027] The cathode of the second diode is connected to the emitter of the Darlington tube and the cathode of the third diode, the other end of the thirty-seventh resistor is connected to the first input end of the third optocoupler, the anode of the third diode is connected to the second input end of the third optocoupler, the first output end of the third optocoupler is connected to one end of the thirty-eighth resistor, one end of the thirty-fourth capacitor and the detection end of the single-chip microcomputer; the other end of the thirty-eighth resistor is connected to the first power supply

[0028] The second output end of the third optocoupler is connected to the other end of the thirty-fourth capacitor and the ground wire.

[0029] By adopting the above technical solution, the multi-parameter fire detector for electrical equipment detection provided in this utility model embodiment connects the processing unit to both the arc detection unit and the flame detection unit, thereby enabling multi-parameter detection of fire and adjusting the control of the fire extinguishing drive unit based on the detection results, thus achieving effective fire extinguishing while ensuring detection accuracy. Attached Figure Description

[0030] Fig. 1 Structural principle diagram of the multi-parameter fire prevention and extinguishing detector for electrical equipment testing provided by this utility model;

[0031] Fig. 2 A schematic diagram of the arc detection unit in the multi-parameter fire detector for electrical equipment testing provided by this utility model;

[0032] Fig. 3 A schematic diagram of the flame detection unit in the multi-parameter fire detector for electrical equipment testing provided by this utility model;

[0033] Fig. 4 The schematic diagram of the fire extinguishing drive unit in the multi-parameter fire detector for electrical equipment testing provided by this utility model. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Example

[0036] like Figs. 1 to 4 As shown, this utility model provides a multi-parameter fire detection and extinguishing detector for electrical equipment testing, comprising:

[0037] The processing unit is a microcontroller. The arc detection unit and flame detection unit emit photocurrents to detect smoke concentration and particles in a fire based on the scattering principle. The microcontroller acquires the output voltage from the output circuits of the arc detection unit and flame detection unit, thereby effectively distinguishing between dust particles and smoke. Preferably, the microcontroller communicates with the arc detection unit and flame detection unit through dual CAN communication ports, thereby improving the reliability of device communication.

[0038] An arc detection unit, the output end UVIN is electrically connected with the first collection end of the processing unit; specifically, the arc detection unit comprises a photosensitive diode DL, a first capacitor C1 connected in parallel with the photosensitive diode DL, one end of the photosensitive diode DL is connected with one end of a third capacitor C3, the other end of the third capacitor C3 is connected with one end of a third resistor R3 and a same direction input end of a first operational amplifier U1A, the negative electrode of the photosensitive diode DL, the first bias end of the first operational amplifier U1A and the ground wire GND are electrically connected; the photosensitive diode, the first capacitor C1, the third capacitor C3 and the third resistor R3 constitute a current detection network;

[0039] One end of a first resistor R1 is connected with a first power supply VCC1, the other end of the first resistor R1, the other end of the third resistor R3, one end of a fourth resistor R4 and one end of a fourth capacitor C4 are electrically connected, the other end of the fourth resistor R4 and the other end of the fourth capacitor C4 are electrically connected with the first bias end of the first operational amplifier U1A; the first resistor R1, the fourth resistor R4 and the fourth capacitor C4 constitute a bias voltage;

[0040] The reverse input end of the first operational amplifier U1A is electrically connected with one end of a second resistor R2, one end of a fifth resistor R5 and one end of a sixth capacitor C6; the first operational amplifier U1A, the second resistor R2 and the fifth resistor R5 constitute a conversion of photoelectric current to voltage signal, the other end of the second capacitor C2 is electrically connected with the ground wire GND; the second capacitor C2 is a filter capacitor; the other end of the fifth resistor R5 and the other end of the sixth capacitor C6 are electrically connected with the output end of the first operational amplifier U1A and one end of a seventh capacitor C7; the first power supply VCC1 is electrically connected with the second bias end of the first operational amplifier U1A and one end of a fifth capacitor C5, the second end of the fifth capacitor C5 is electrically connected with the ground wire GND; the sixth capacitor C6 avoids the first operational amplifier U1A from appearing self-excited vibration due to too large multiple;

[0041] The other end of the seventh resistor R7 is electrically connected with the same input end of the second operational amplifier U2A and one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected with the ground wire GND, the reverse input end of the second operational amplifier U2A is connected with one end of the seventh resistor R7, one end of the eighth resistor R8 and one end of the ninth capacitor C9, the other end of the eighth resistor R8 is connected with one end of the eighth capacitor C8, the other end of the eighth capacitor C8 is connected with the ground wire GND; the other end of the seventh resistor R7 and the other end of the ninth capacitor C9 are connected with the output end of the second operational amplifier U2A and one end of the tenth capacitor C10; the ninth capacitor C9, the eighth resistor R8 and the eighth capacitor C8 constitute a first-stage feedback amplification network of a small signal; the tenth resistor R10, the twelfth capacitor C12, the eleventh resistor R11 and the eleventh capacitor C11 constitute a second-stage feedback amplification network of a small signal.

[0042] The other end of the tenth capacitor C10 is connected with one end of the ninth resistor R9 and the same input end of the third operational amplifier U3A, the other end of the ninth resistor R9 is connected with the ground wire GND, the reverse input end of the third operational amplifier U3A is connected with one end of the tenth resistor R10, one end of the eleventh resistor R11 and one end of the twelfth capacitor C12, the other end of the eleventh resistor R11 is connected with one end of the eleventh capacitor C11, the other end of the eleventh capacitor C11 is connected with the ground wire GND; the other end of the tenth resistor R10 and the other end of the twelfth capacitor C12 are connected with the output end of the third operational amplifier U3A, one end of the thirteenth capacitor C13 and one end of the fourteenth capacitor C14, the other end of the thirteenth capacitor C13 is connected with the ground wire GND.

[0043] The other end of the fourteenth capacitor C14 is connected with one end of the twelfth resistor R12 and the same input end of the fourth operational amplifier U4A, the reverse input end of the fourth operational amplifier U4A is connected with one end of the thirteenth resistor R13, one end of the fourteenth resistor R14 and one end of the twelfth capacitor C12, the other end of the fourteenth resistor R14 is connected with one end of the fifteenth capacitor C15, the other end of the fifteenth capacitor C15 is connected with the ground wire GND; the other end of the thirteenth resistor R13 and the other end of the sixteenth capacitor C16 are connected with the output end of the fourth operational amplifier U4A and the first acquisition end of the processing unit. The thirteenth resistor R13, the sixteenth capacitor C16, the fourteenth resistor R14 and the fifteenth capacitor C15 constitute a third-stage feedback amplification network of a small signal, and realize amplification of the output voltage of the resistor to the acquisition range of the single-chip microcomputer.

[0044] A flame detection unit, the output end OUT is electrically connected with the second collecting end of the processing unit; the flame detection unit includes a sensor interface N, the first end of the sensor interface N is connected with one end of a fifteenth resistor R15, one end of a seventeenth capacitor C17 and one end of an eighteenth capacitor C18, the other end of the fifteenth resistor R15 is connected with the first power supply VCC1, the other end of the seventeenth capacitor C17 is connected with the ground wire GND and the other end of the eighteenth capacitor C18 is connected with the ground wire GND respectively;

[0045] The second end of the sensor interface N is connected with one end of a sixteenth resistor R16, one end of a nineteenth capacitor C19 and one end of a twenty-first capacitor C21 respectively, the other end of the sixteenth resistor R16 and the other end of the nineteenth capacitor C19 are connected with the ground wire GND;

[0046] The other end of the twenty-first capacitor C21 is connected with one end of a nineteenth resistor R19 and a same direction input end of a fifth operational amplifier U5A; the other end of the nineteenth resistor R19 is connected with one end of an eighteenth resistor R18, one end of a twentieth resistor R20 and one end of a twenty-second capacitor C22 respectively, the other end of the eighteenth resistor R18 is connected with the first power supply VCC1, the other end of the twentieth resistor R20 and the other end of the twenty-second capacitor C22 are connected with the ground wire GND and a first bias end of the fifth operational amplifier U5A; a second bias end of the fifth operational amplifier U5A is connected with the first power supply VCC1 and one end of a twenty-third capacitor C23, the other end of the twenty-third capacitor C23 is connected with the ground wire GND; one end of the eighteenth resistor R18, the twentieth resistor R20 and the twenty-second capacitor C22 constitute a bias voltage, which provides a bias voltage for the amplification circuit.

[0047] The reverse input end of the fifth operational amplifier U5A is connected with one end of a seventeenth resistor R17, one end of a twenty-first resistor R21 and one end of a twenty-fourth capacitor C24, the other end of the seventeenth resistor R17 is connected with one end of a twentieth capacitor C20, the other end of the twentieth capacitor C20 is connected with the ground wire GND; the other end of the twenty-first resistor R21 and the other end of the twenty-fourth capacitor C24 are connected with the output end of the fifth operational amplifier U5A and one end of a twenty-fifth capacitor C25; the seventeenth resistor R17, the twenty-first resistor R21 and the fifth operational amplifier U5A constitute a conversion from photoelectric current to voltage signal, the twenty-fourth capacitor C24 avoids the fifth operational amplifier U5A from appearing self-excited vibration due to too large multiple;

[0048] The other end of the twenty-fifth capacitor C25 is connected to one end of a twenty-fifth resistor R25, and the other end of the twenty-fifth resistor R25 is connected to the inverting input terminal of a sixth operational amplifier U6A, one end of a twenty-seventh capacitor C27, and one end of a twenty-sixth resistor R26; the other end of the twenty-seventh capacitor C27 and the other end of the twenty-sixth resistor R26 are connected to the output terminal of the sixth operational amplifier U6A and one end of a twenty-seventh resistor R27; the noninverting input terminal of the sixth operational amplifier U6A is connected to one end of a twenty-third resistor R23, and the other end of the twenty-third resistor R23 is connected to one end of a twenty-second resistor R22, one end of a twenty-fourth resistor R24, and one end of a twenty-sixth capacitor C26; the other end of the twenty-second resistor R22 is connected to the first power supply VCC1, and the other end of the twenty-fourth resistor R24 and the other end of the twenty-sixth capacitor C26 are connected to the ground GND; the twenty-fifth resistor R25, the twenty-seventh capacitor C27, and the twenty-sixth resistor R26 constitute a first-stage small-signal feedback amplification network;

[0049] The other end of the twenty-seventh resistor R27 is connected to one end of a twenty-eighth capacitor C28, the noninverting input terminal, the inverting input terminal, and the output terminal of a seventh operational amplifier U7A, and the other end of the twenty-eighth capacitor C28 is connected to the ground GND; the inverting input terminal of the seventh operational amplifier U7A is connected to a twenty-ninth capacitor C29; the twenty-seventh resistor R27 and the twenty-eighth capacitor C28 constitute an RC filter circuit.

[0050] The other end of the twenty-ninth capacitor C29 is connected to one end of a twenty-eighth resistor R28 and the noninverting input terminal of an eighth operational amplifier U8A, and the other end of the twenty-eighth resistor R28 is connected to the ground GND; the inverting input terminal of the eighth operational amplifier U8A is connected to one end of a twenty-ninth resistor R29, one end of a thirtieth resistor R30, and one end of a thirtieth capacitor C30; the other end of the thirtieth resistor R30 is connected to the ground GND, the other end of the twenty-ninth resistor R29 and the other end of the thirtieth capacitor C30 are connected to the output terminal of the eighth operational amplifier U8A and the second collection end of the processing unit; the twenty-ninth resistor R29, the thirtieth resistor R30, and the thirtieth capacitor C30 constitute a second-stage small-signal feedback amplification network; and the amplification of the output voltage of the quenching resistor to the collection range of the single-chip microcomputer is realized.

[0051] The control output terminal of the processing unit is electrically connected to a fire extinguishing driving unit. The fire extinguishing driving unit includes a thirty-first resistor R31 and a thirty-second resistor R32, wherein one end of the thirty-first resistor R31 is electrically connected to the first control output terminal OUT1 of the processing unit, and one end of the thirty-second resistor R32 is electrically connected to the second control output terminal OUT2 of the processing unit.

[0052] The other end of the thirty-first resistor R31 is connected to one end of the thirty-first capacitor C31, one end of the thirty-fourth resistor R34, and the second input end of the first optocoupler U1. The other end of the thirty-first capacitor C31 and the other end of the thirty-fourth resistor R34 are connected to the first power supply VCC1 and the first input end of the first optocoupler U1. The first output end of the first optocoupler U1 is connected to the first end of the thirty-sixth resistor R36. The other end of the thirty-sixth resistor R36 is connected to one end of the thirty-fifth resistor R35, one end of the thirty-third capacitor C33, and the base of the clamping diode. The other end of the thirty-fifth resistor R35 and the other end of the thirty-third capacitor C33 are connected to the second power supply, the collector of the Darlington tube, and one end of the thirty-seventh resistor R37. The thirty-third capacitor C33 is added to prevent the second power supply VCC2 from being pulled down to a voltage beyond the required voltage instantaneously when starting the fire extinguishing tank.

[0053] The other end of the thirty-second resistor R32 is connected to one end of the thirty-third resistor R33, one end of the thirty-second capacitor C32, and the first input end of the second optocoupler U2. The other end of the thirty-third resistor R33 and the other end of the thirty-second capacitor C32 are connected to the ground GND and the second input end of the second optocoupler U2. The first output end of the second optocoupler U2 is connected to the second output end of the first optocoupler U1. The second output end of the second optocoupler U2 is connected to the anode of the first diode D1. The cathode of the first diode D1 is connected to the anode of the second diode D2 and the signal ground GND2. The cathode of the second diode D2 is connected to the anode OUT+ of the electric device for fire extinguishing.

[0054] The cathode of the second diode D2 is connected to the emitter of the Darlington tube Q1 and the cathode of the third diode D3. The other end of the thirty-seventh resistor R37 is connected to the first input end of the third optocoupler U3. The anode of the third diode D3 is connected to the second input end of the third optocoupler U3. The third diode D3 is added to prevent the voltage of the electric device for fire extinguishing from flowing back to the third optocoupler U3, causing damage to it. One end of the thirty-eighth resistor R38 and one end of the thirty-fourth capacitor C34 are connected to the first output end of the third optocoupler U3. The other end of the thirty-eighth resistor R38 is connected to the first power supply VCC1.

[0055] The second output end of the third optocoupler U3 is connected to the other end of the thirty-fourth capacitor C34 and the ground GND.

[0056] The multi-parameter fireproof fire extinguishing detector for electrical equipment detection provided by the embodiment of the utility model, by connecting the processing unit with the electric arc detection unit and the flame detection unit at the same time, the multi-parameter detection for the fire is realized, and according to the detection result, the control for the fire extinguishing driving unit is adjusted, so that effective fire extinguishing is realized on the basis of ensuring the detection accuracy.

[0057] Obviously, the above embodiments are only examples for clearly illustrating, and are not limitation to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model creation.

Claims

1. A multi-parameter fire-preventing and extinguishing detector for detecting an electric device, characterized by, The utility model relates to a kind of arc detection device, including: Processing unit; Arc detection unit, the output end of which is electrically connected to the first acquisition end of the processing unit; Flame detection unit, the output end of which is electrically connected to the second acquisition end of the processing unit; Fire extinguishing drive unit, the control output end of the processing unit is electrically connected to the fire extinguishing drive unit.

2. The multi-parameter fire prevention and extinguishing detector for electrical equipment according to claim 1, characterized in that: The processing unit is a single-chip microcomputer.

3. The multi-parameter fire and flame detector for electrical equipment detection according to claim 1, characterized in that: The arc detection unit includes a photodiode, a first capacitor connected in parallel with the photodiode, a positive electrode of the photodiode connected to one end of a third capacitor, the other end of the third capacitor connected to one end of a third resistor and a same-direction input end of a first operational amplifier, a negative electrode of the photodiode, a first bias end of the first operational amplifier and a ground wire electrically connected; One end of a first resistor is connected to a first power supply, the other end of the first resistor, the other end of the third resistor, one end of a fourth resistor and one end of a fourth capacitor are electrically connected, the other end of the fourth resistor and the other end of the fourth capacitor are electrically connected to the first bias end of the first operational amplifier; The reverse input end of the first operational amplifier is electrically connected to one end of a second resistor, one end of a fifth resistor and one end of a sixth capacitor; the other end of the second resistor is electrically connected to one end of a second capacitor, the other end of the second capacitor is electrically connected to the ground wire; the other end of the fifth resistor and the other end of the sixth capacitor are electrically connected to the output end of the first operational amplifier and one end of a seventh capacitor; the first power supply is electrically connected to the second bias end of the first operational amplifier and one end of a fifth capacitor, the second end of the fifth capacitor is electrically connected to the ground wire; The other end of a seventh resistor is electrically connected to a same-direction input end of a second operational amplifier and one end of a sixth resistor, the other end of the sixth resistor is connected to the ground wire, the reverse input end of the second operational amplifier is connected to one end of a seventh resistor, one end of an eighth resistor and one end of a ninth capacitor, the other end of the eighth resistor is connected to one end of an eighth capacitor, the other end of the eighth capacitor is connected to the ground wire; the other end of the seventh resistor and the other end of the ninth capacitor are connected to the output end of the second operational amplifier and one end of a tenth capacitor; The other end of the tenth capacitor is connected to one end of a ninth resistor and a same-direction input end of a third operational amplifier, the other end of the ninth resistor is connected to the ground wire, the reverse input end of the third operational amplifier is connected to one end of a tenth resistor, one end of an eleventh resistor and one end of a twelfth capacitor, the other end of the eleventh resistor is connected to one end of an eleventh capacitor, the other end of the eleventh capacitor is connected to the ground wire; the other end of the tenth resistor and the other end of the twelfth capacitor are connected to the output end of the third operational amplifier, one end of a thirteenth capacitor and one end of a fourteenth capacitor, the other end of the thirteenth capacitor is connected to the ground wire; Another end of the fourteenth capacitor is connected with one end of the twelfth resistor and the same direction input end of the fourth operational amplifier, the opposite direction input end of the fourth operational amplifier is connected with one end of the thirteenth resistor, one end of the fourteenth resistor and one end of the twelfth capacitor, the other end of the fourteenth resistor is connected with one end of the fifteenth capacitor, and the other end of the fifteenth capacitor is connected with the ground wire; the other end of the thirteenth resistor and the other end of the sixteenth capacitor are connected with the output end of the fourth operational amplifier and the first acquisition end of the processing unit.

4. The multi-parameter fire and flame detector for electrical equipment detection according to claim 3, characterized in that: The flame detection unit comprises a sensor interface, one end of the fifteenth resistor, one end of the seventeenth capacitor and one end of the eighteenth capacitor are connected with the first end of the sensor interface, the other end of the fifteenth resistor is connected with the first power supply, the other end of the seventeenth capacitor is connected with the ground wire, and the other end of the eighteenth capacitor is connected with the ground wire respectively; The second end of the sensor interface is connected with one end of the sixteenth resistor, one end of the nineteenth capacitor and one end of the twenty-first capacitor respectively, and the other end of the sixteenth resistor and the other end of the nineteenth capacitor are connected with the ground wire; The other end of the twenty-first capacitor is connected with one end of the nineteenth resistor and the same direction input end of the fifth operational amplifier, the other end of the nineteenth resistor is connected with one end of the eighteenth resistor, one end of the twentieth resistor and one end of the twenty-second capacitor respectively, the other end of the eighteenth resistor is connected with the first power supply, and the other end of the twentieth resistor and the other end of the twenty-second capacitor are connected with the ground wire and the first bias end of the fifth operational amplifier; The second bias end of the fifth operational amplifier is connected with the first power supply and one end of the twenty-third capacitor, and the other end of the twenty-third capacitor is connected with the ground wire; The opposite direction input end of the fifth operational amplifier is connected with one end of the seventeenth resistor, one end of the twenty-first resistor and one end of the twenty-fourth capacitor, the other end of the seventeenth resistor is connected with one end of the twentieth capacitor, and the other end of the twentieth capacitor is connected with the ground wire; The other end of the twenty-first resistor and the other end of the twenty-fourth capacitor are connected with the output end of the fifth operational amplifier and one end of the twenty-fifth capacitor; The other end of the twenty-fifth capacitor is connected with one end of the twenty-fifth resistor, the other end of the twenty-fifth resistor is connected with the opposite direction input end of the sixth operational amplifier, one end of the twenty-seventh capacitor and one end of the twenty-sixth resistor, the other end of the twenty-seventh capacitor and the other end of the twenty-sixth resistor are connected with the output end of the sixth operational amplifier and one end of the twenty-seventh resistor, the same direction input end of the sixth operational amplifier is connected with one end of the twenty-third resistor, the other end of the twenty-third resistor is connected with one end of the twenty-second resistor, one end of the twenty-fourth resistor and one end of the twenty-sixth capacitor, the other end of the twenty-second resistor is connected with the first power supply, and the other end of the twenty-fourth resistor and the other end of the twenty-sixth capacitor are connected with the ground wire; The other end of the twenty-seventh resistor is connected to one end of a twenty-eighth capacitor, a same direction input end, a reverse input end and an output end of a seventh operational amplifier, and the other end of the twenty-eighth capacitor is connected to the ground wire; the reverse input end of the seventh operational amplifier is connected to a twenty-ninth capacitor; The other end of the twenty-ninth capacitor is connected to one end of a twenty-eighth resistor and a same direction input end of an eighth operational amplifier, and the other end of the twenty-eighth resistor is connected to the ground wire; The reverse input end of the eighth operational amplifier is connected to one end of a twenty-ninth resistor, one end of a thirtieth resistor and one end of a thirtieth capacitor, the other end of the thirtieth resistor is connected to the ground wire, and the other end of the twenty-ninth resistor and the other end of the thirtieth capacitor are connected to an output end of the eighth operational amplifier and a second collection end of the processing unit.

5. The multi-parameter fire and flame detector for electrical equipment detection according to claim 3, characterized in that: The fire extinguishing driving unit comprises a thirty-first resistor and a thirty-second resistor, wherein one end of the thirty-first resistor is electrically connected to a first control output end of the processing unit, and one end of the thirty-second resistor is electrically connected to a second control output end of the processing unit; The other end of the thirty-first resistor is connected to one end of a thirty-first capacitor, one end of a thirty-fourth resistor and a second input end of a first optocoupler, the other end of the thirty-first capacitor and the other end of the thirty-fourth resistor are connected to the first power supply and a first input end of the first optocoupler; a first output end of the first optocoupler is connected to a first end of a thirty-sixth resistor, the other end of the thirty-sixth resistor is connected to one end of a thirty-fifth resistor, one end of a thirty-third capacitor and a base of a clamping diode, the other end of the thirty-fifth resistor and the other end of the thirty-third capacitor are connected to a second power supply, a collector of a Darlington tube and one end of a thirty-seventh resistor; The other end of the thirty-second resistor is connected to one end of a thirty-third resistor, one end of a thirty-second capacitor and a first input end of a second optocoupler, the other end of the thirty-third resistor and the other end of the thirty-second capacitor are connected to the ground wire and a second input end of the second optocoupler, a first output end of the second optocoupler is connected to a second output end of the first optocoupler, a second output end of the second optocoupler is connected to a positive electrode of a first diode, a negative electrode of the first diode is connected to a positive electrode of a second diode and a signal ground wire; a negative electrode of the second diode is connected to a negative electrode of a fire extinguishing device; The negative electrode of the second diode is connected to an emitter of the Darlington tube and a negative electrode of a third diode, the other end of the thirty-seventh resistor is connected to a first input end of a third optocoupler, the positive electrode of the third diode is connected to a second input end of the third optocoupler, a first output end of the third optocoupler is connected to one end of a thirty-eighth resistor, one end of a thirty-fourth capacitor and a detection end of a single-chip microcomputer; the other end of the thirty-eighth resistor is connected to the first power supply; A second output end of the third optocoupler is connected to the other end of the thirty-fourth capacitor and the ground wire.

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