Automatic fire extinguishing control system of electrical cabinet

Abstract

The utility model relates to the technical field of fire prevention and control, in particular to an electrical cabinet automatic fire extinguishing control system which comprises a sensor module, a control module and an execution module, and the sensor module is connected with the execution module through the control module. The control module comprises a judgment module and a processor, the judgment module comprises a polling acquisition module and a counting module, and the polling acquisition module, the counting module and the processor are mutually connected in pairs; the polling acquisition module is used for automatically polling and collecting signals transmitted by the sensor module and transmitting the collected signals to the counting module; the counting module is used for carrying out statistical counting on the data acquired by the wheel sequence acquisition module and outputting a control signal to the processor if the number exceeds a set number; according to the utility model, the technical problem that the existing fire extinguishing control system of the electrical cabinet cannot position a fire source and cannot start the regional fire extinguishing device in a targeted manner for regional fire extinguishing is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire prevention and control technical field, specifically, an automatic fire extinguishing control system for electrical cabinet. BACKGROUND

[0002] Electrical cabinets are crucial in industry, commerce, and power facilities, but their fire risk cannot be ignored. Electrical cabinets contain a large number of flammable components. Once a fire occurs, the fire spreads rapidly, and high temperatures not only damage expensive equipment but also cause power outages or production stoppages. In severe cases, fires can also cause secondary faults such as short circuits or even explosions, posing a serious threat to personnel safety and causing significant losses.

[0003] Currently, although electrical cabinet design is constantly improving, there are still deficiencies in fire prevention. Many electrical cabinets focus on electrical performance and lack sufficient consideration for fire prevention. Traditional fire extinguishing systems are relatively simple and lack the ability to accurately locate the fire source, resulting in low extinguishing efficiency. Although the overall fire extinguishing device can trigger the fire extinguishing action, the fire extinguishing agent may not reach the fire source accurately, resulting in low efficiency and excessive dispersion of the fire extinguishing agent, especially in some large electrical cabinets, it is not easy to control the fire source in time. In addition, the fire monitoring system is not sensitive enough, which can delay the fire extinguishing opportunity, and some equipment may rekindle after a fire, especially in some dead angle equipment, which is prone to rekindling, and the traditional fire extinguishing system cannot judge and control it.

[0004] In existing technology, although the method of uploading sensor data to the system and determining the fire source location by software is widely used, if the sensor fails or is disturbed, such as signal attenuation, noise interference, etc., even if the system collects a large amount of temperature data exceeding the threshold value, it will still affect the positioning result. During the process of uploading data from the sensor to the system, data transmission delay may occur. For such an emergency situation as electrical cabinet fire, data transmission delay may delay the judgment of the fire source location and the adoption of fire extinguishing measures.

[0005] Therefore, it is of great significance to solve the technical problem of the existing electrical cabinet fire extinguishing control system that cannot locate the fire source and open the corresponding partition fire extinguishing device for regional fire extinguishing. UTILITY MODEL CONTENT

[0006] The purpose of the present application is to provide an automatic fire extinguishing control system for electrical cabinet, which solves the technical problem of the existing electrical cabinet fire extinguishing control system that cannot locate the fire source and open the corresponding partition fire extinguishing device for regional fire extinguishing.

[0007] To solve the above technical problems, the application adopts the following solutions:

[0008] The utility model provides an electrical cabinet automatic fire extinguishing control system, including sensor module, control module, execution module, sensor module passes through control module and execution module is connected, its characterized in be all: control module includes judging module, treater, judging module includes polling collection module, counting module, polling collection module, counting module, treater two two interconnects each other,

[0009] Judging module is used for judging whether the fire disaster occurs or not;

[0010] Polling collection module is used for automatically polling and collecting the signal of sensor module transmission and according to the signal transmission of collection in counting module;

[0011] Counting module is used for counting the data of polling collection module collection, and the control signal is output to the treater in the exceeding setting number;

[0012] The treater controls the execution module work after receiving the control signal of counting module.

[0013] In some embodiments, the polling collection module includes a plurality of collection modules, the input end of the plurality of collection modules is connected with the output end of the sensor module respectively, the output end of the plurality of collection modules is connected and the output end is set as the output end of the polling collection module, and the output end of the polling collection module is connected with the counting module.

[0014] In some embodiments, the collection module includes a field effect tube, a diode, a photoelectric sensor, a triode and a plurality of resistors, the base of the triode is set as the input end one of the collection module, the collector of the triode is connected with the emission end one of the photoelectric sensor, the emitter of the triode is grounded, and the emission end two of the photoelectric sensor is connected with the power supply through a resistor;The drain of the field effect tube is connected with the receiving end one of the photoelectric sensor, and the connection is grounded through a resistor;The receiving end two of the photoelectric sensor is connected with the power supply through a resistor;The gate of the field effect tube is set as the input end two of the collection module, the source of the field effect tube is connected with the anode of the diode, and the connection is grounded through a resistor;The cathode of the diode is set as the output end of the collection module.

[0015] In some embodiments, the counting module includes a first counter and a logic module, the input end of the logic module is connected with the output end of the polling collection module, and the output end of the logic module is connected with the counter;

[0016] The logic module is used for ensuring the accuracy of the signal output by the polling collection module;

[0017] The first counter is used for counting the number of high-level signals transmitted by the wheel sequence acquisition module.

[0018] In some embodiments, the counting module further comprises a second counter, the output end of the second counter is connected with the reset end of the first counter; the second counter is used for recording the number of signals transmitted by the polling acquisition module.

[0019] In some embodiments, the counting module further comprises a delay circuit, the output end of the second counter is connected with the reset end of the first counter through the delay circuit.

[0020] In some embodiments, the sensor module comprises an infrared flame detector and a smoke temperature composite detector, the output end of the infrared flame detector and the output end of the smoke temperature composite detector are respectively connected with the input end of the control module.

[0021] In some embodiments, the execution module comprises a plurality of sets of fire extinguishing modules, alarm modules and power-off modules, and the plurality of sets of fire extinguishing modules, alarm modules and power-off modules are respectively connected with the control module.

[0022] The technical scheme of the present application has at least the following advantages and beneficial effects:

[0023] 1. The control module comprises a polling acquisition module and a counting module, the polling acquisition module can automatically and cyclically acquire signals of sensors exceeding threshold parameters, and count the number of signals, when the number of signals of sensors exceeding threshold parameters in a certain area exceeds a set number, the counting module outputs a control signal to the fire extinguishing module in the area through a processor, and the fire extinguishing module in the area is started to extinguish fire.

[0024] 2. The control module is used for positioning the possible area of the rekindling phenomenon when the sensor module finds the rekindling phenomenon, so that the fire extinguishing module can be started again to perform cooling treatment. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a signal flow diagram of the utility model;

[0026] Figure 2 It is a polling acquisition module circuit diagram of the utility model;

[0027] Figure 3The utility model discloses a counting module circuit diagram.

[0028] Figure 4 The utility model discloses a counting module circuit diagram for the first counter reset. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0030] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. If the orientation or position relationship indicated by the terms "center", "upper", "lower", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship of the product of the application when it is usually placed, and is only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, structure and operation, so it cannot be understood as a limitation on the application. It should be noted that, unless otherwise specified and limited, if the terms "set", "mount", "connect" appear, they should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, or indirectly connected through an intermediate medium, and can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0031] Embodiment 1

[0032] Please refer to Figures 1-4 The utility model provides a kind of automatic fire extinguishing control system of electrical cabinet, same as prior art, including sensor module, control module, execution module, sensor module is connected by control module and execution module.

[0033] Sensor module is used to detect whether fire occurs, and it includes multiple infrared flame detectors, multiple smoke temperature composite detectors, the output end of infrared flame detector, the output end of smoke temperature composite detector is respectively connected with the input end of control module;

[0034] In this embodiment, the model of the infrared flame detector is SYP-011FLM; the model of the smoke temperature composite detector is ZT-FBGY-2; it should be noted that the infrared flame detector and the smoke temperature composite detector are combined to output control signals to the polling collection module for data collection.

[0035] It should be noted that the combination of the infrared flame detector and the smoke temperature composite detector in this embodiment makes the monitoring more accurate, and setting multiple such combinations in the electrical cabinet can ensure that the accuracy of the fire monitoring in the cabinet is higher, and the subsequent control module judges the combinations that exceed the monitoring threshold, which can approximately locate the fire source position, thereby starting the fire extinguishing device to extinguish the fire.

[0036] The execution module performs fire extinguishing and alarm operations according to the control signal of the control module, and includes multiple sets of fire extinguishing modules, alarm modules, and power-off modules. The multiple sets of fire extinguishing modules, alarm modules, and power-off modules are respectively connected to the control module. The multiple sets of fire extinguishing modules are respectively arranged in the electrical cabinet. When the sensor detects a fire source and the control module determines the approximate position, the fire extinguishing module in the region is started to ensure that the appropriate amount of fire extinguishing agent is used to complete fire extinguishing, thereby avoiding resource waste.

[0037] It should be noted that the fire extinguishing module in this embodiment is an aerosol fire extinguishing agent.

[0038] Unlike the prior art, the control module includes a judgment module and a processor. The judgment module includes a polling collection module and a counting module. The polling collection module, the counting module, and the processor are connected to each other in pairs.

[0039] The judgment module is used to determine whether a fire has occurred.

[0040] The polling collection module is used to automatically poll and collect signals transmitted by the sensor module, and transmit the collected signals to the counting module.

[0041] The counting module is used to count the data collected by the polling collection module. When the number exceeds a set number, a control signal is output to the processor.

[0042] The processor controls the execution module to work after receiving the control signal from the counting module.

[0043] It should be noted that the model of the processor is STM32L431CCT6.

[0044] The polling collection module includes multiple sets of collection modules. The input ends of the multiple sets of collection modules are respectively connected to the output ends of the sensor modules. The output ends of the multiple sets of collection modules are connected and an output end is set at this position as the output end of the polling collection module. The output end of the polling collection module is connected to the counting module.

[0045] Further, the acquisition module comprises a field effect tube, a diode, a photoelectric sensor, a triode, a plurality of resistors, a base of the triode is set as an input end one of the acquisition module, a collector of the triode and an emitting end one of the photoelectric sensor are connected, an emitter of the triode is grounded, an emitting end two of the photoelectric sensor is connected to a power supply through a resistor; a drain of the field effect tube and a receiving end one of the photoelectric sensor are connected, and the connection is grounded through a resistor; a receiving end two of the photoelectric sensor is connected to the power supply through a resistor; a gate of the field effect tube is set as an input end two of the acquisition module, a source of the field effect tube and an anode of the diode are connected, and the connection is grounded through a resistor; a cathode of the diode is set as an output end of the acquisition module.

[0046] Further, as shown in the two acquisition modules, Figure 2 the polling acquisition module comprises a photoelectric sensor U1, U2, a triode Q1, Q2, a field effect tube Q3, Q4, a diode D1, D2, a resistor R1, R2, R3, R4, R5, R6, R7, R8, R9.

[0047] Specifically, one end of the resistor R1 is set as an A_IN1 input end, the other end of the resistor R1 and the base of the triode Q1 are connected, the collector of the triode Q1 and the pin 2 of the photoelectric sensor U1 are connected, one end of the resistor R2 and the pin 1 of the photoelectric sensor U1 are connected, the other end of the resistor R2 and one end of the resistor R3 are connected and connected to the power supply, the other end of the resistor R3 and the pin 4 of the photoelectric sensor U1 are connected, the pin 3 of the photoelectric sensor U1, the drain of the field effect tube Q3 and one end of the resistor R5 are connected, the other end of the resistor R5 and the emitter of the triode Q1 are connected and grounded; the gate of the field effect tube Q3 is set as an A_IN2 input end, the source of the field effect tube Q3, the anode of the diode D1 and one end of the resistor R4 are connected, the other end of the resistor R4 is grounded; the other end of the resistor R6 and the base of the triode Q2 are connected, the collector of the triode Q2 and the pin 2 of the photoelectric sensor U2 are connected, one end of the resistor R7 and the pin 1 of the photoelectric sensor U2 are connected, the other end of the resistor R7 and one end of the resistor R8 are connected and connected to the power supply, the other end of the resistor R8 and the pin 4 of the photoelectric sensor U2 are connected, the pin 3 of the photoelectric sensor U1, the drain of the field effect tube Q4 and one end of the resistor R9 are connected, the other end of the resistor R9 and the emitter of the triode Q2 are connected and grounded; the gate of the field effect tube Q4 is set as an A_IN3 input end, the source of the field effect tube Q4, the anode of the diode D2 and one end of the resistor R10 are connected, the other end of the resistor R10 is grounded; the cathode of the diode D1 and the cathode of the diode D2 are connected, and an A_OUT output end is set at the place.

[0048] It should be noted that the triode Q1 and the triode Q2 are both NPN type, and the model number is 2N7002K; the model number of the photoelectric sensor U1 and the photoelectric sensor U2 is PC357C; the field effect tube Q1 and the field effect tube Q2 are both NMOS tubes, and the model number is AO3400A.

[0049] It should be noted that the A_IN1 input end and the A_IN3 input end are connected to the sensor module respectively, and the A_IN2 input end and the A_IN4 input end are connected to the processor respectively; the conduction of the field effect tube Q1 and the field effect tube Q2 is controlled by the processor;

[0050] The working process of the polling collection module is as follows:

[0051] When the A_IN2 input end receives a control signal, the field effect tube Q1 is turned on, and the signal received by the A_IN1 input end is sent out from the A_OUT output end;

[0052] When the A_IN3 input end receives a control signal, the field effect tube Q1 is turned on, and the signal received by the A_IN4 input end is sent out from the A_OUT output end.

[0053] The counting module includes a first counter and a logic module, the input end of the logic module is connected with the output end of the polling collection module; the output end of the logic module is connected with the counter;

[0054] The logic module is used for ensuring the accuracy of the signal output by the polling collection module;

[0055] The first counter is used for counting the number of high-level signals transmitted by the polling collection module.

[0056] Further, as shown in the figure, Figure 3 The counting module includes an AND gate U3, resistors R9 and R10, a triode Q5, and a first counter U4.

[0057] It should be noted that the AND gate U3 is a double-channel AND gate, and the model number is SN74LVC2G08DCURE4; the triode Q5 is NPN type, and the model number is 2N7002K; the model number of the first counter U4 is 74LS161;

[0058] Specifically, the pin 1 and the pin 2 of the AND gate U3 are respectively set as the B_IN1 input end and the B_IN2 input end, the pin 4 of the AND gate U3 is grounded, the pin 3 of the AND gate U3 is connected with the pin 2 of the first counter U4; the pin 6 and the pin 7 of the AND gate U3 are connected, the pin 5 of the AND gate U3 is set as the AND gate U3 input end, the pin 8 of the AND gate U3 and the pin 7, the pin 8, the pin 10 and the pin 16 of the first counter U4 are connected and connected to the power supply; the pin 3, the pin 4, the pin 5, the pin 6 and the pin 8 of the first counter U4 and the emitter of the triode Q5 are connected and grounded, the pin 1 of the first counter U4, one end of the resistor R9 and the collector of the triode Q5 are connected, the other end of the resistor R9 is connected to the power supply, the base of the triode Q5 and one end of the resistor R10 are connected, the other end of the resistor R10 is set as the B_IN4 input end, and the pin 13 of the first counter U4 is set as the B_OUT output end.

[0059] It should be noted that the B_IN3 input end is connected with the A_OUT output end.

[0060] It should be explained that when the AND gate U3 judges that a certain channel received is high level, the AND gate U3 inputs a high level pulse signal into the first counter U4, and the first counter U4 counts it;

[0061] In the embodiment, when the number of sensors in the region counted by the first counter U4 exceeds the threshold value, the corresponding fire extinguishing module is selected to extinguish the fire; this method can simply and approximately locate the fire area, so as to start the fire extinguishing module in the region; if the fire is not completely extinguished after starting the fire extinguishing module in the region, the processor controls other fire extinguishing modules to spray fire extinguishing again, which not only can save the amount of fire extinguishing agent to complete the fire extinguishing task under certain conditions, but also can prevent the phenomenon of rekindling, thereby avoiding the explosion of the electrical cabinet; and approximately locating the fire source position can also provide approximate positioning when the fire cause is investigated later.

[0062] The counting module further comprises a second counter, the output end of the second counter being connected with the reset end of the first counter; the second counter is used for recording the number of times of transmitting signals by the polling acquisition module; the counting module further comprises a delay circuit, the output end of the second counter being connected with the reset end of the first counter through the delay circuit.

[0063] Further, as shown in FIG. 6, the counting module further comprises a resistor R11, diodes D3 and D4, a capacitor C1 and a second counter U4. Figure 4

[0064] Among them, the model of the second counter U5 is 74LS161; the resistor R11 and the capacitor C1 constitute a delay circuit, which is used for resetting the first counter after the first counter completes counting; ​

[0065] Specifically, the anode of the diode D3 and the anode of the diode D4 are respectively set as the C_IN1 input end and the C_IN input end; the pin 2 of the first counter U4, the cathode of the diode D3 and the cathode of the diode D4 are connected; the pin 7, the pin 8, the pin 10 and the pin 16 of the first counter U4 are connected and connected to the power supply; the pin 3, the pin 4, the pin 5, the pin 6 and the pin 8 of the first counter U4 are connected and grounded, the pin 13 of the first counter U4, one end of the resistor R11 and one end of the capacitor C1 are connected, the other end of the capacitor C1 is grounded, and the other end of the resistor R11 is set as the C_OUT output end.

[0066] It should be noted that the C_IN1 input end, the A_IN2 input end and the B_IN2 input end are connected and connected to the processor; the C_IN2 input end, the A_IN3 input end and the B_IN2 input end are connected and connected to the processor; the C_OUT output end and the B_IN4 are connected.

[0067] It should be explained that when the C_IN1 input end and the C_IN2 input end receive the frequency transmitted by the processor for counting, when the specified number of times is received, it indicates that the data collection in the period has been completed, and the next period can be performed, at this time, the C_OUT output end outputs a signal to the first counter, so as to ensure that the first counter U4 and the second counter U5 are reset.

[0068] It should be noted that the above is an example of two collection modules, and the specific circuit designed in this way is to facilitate understanding of the working mode of the utility model.

[0069] It should be noted that the signal received by the processor and the output control signal of the control module control the fire extinguishing, alarm and power-off functions, which are connected to the IO port (such as PA1, PA0, etc.) of the processor to transmit signals, and the signals can be transmitted by receiving or outputting high level and low level, which is prior art and will not be described in detail.

[0070] It should be noted that the above electronic devices can be purchased in the domestic and foreign markets.

[0071] At this point, the embodiments of the utility model have been described in detail. In order to avoid obscuring the concept of the utility model, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions of the utility model according to the above description, and the scope of the utility model is defined by the appended claims.

Claims

1. An automatic fire extinguishing control system for electrical cabinets, comprising a sensor module, a control module, an execution module, the sensor module being connected through the control module and the execution module; characterized in that: The control module comprises a judging module and a processor, the judging module comprises a polling collection module and a counting module, and the polling collection module, the counting module and the processor are connected with each other in pairs; The judging module is used for judging whether a fire occurs or not; The polling collection module is used for automatically collecting signals transmitted by the sensor module and transmitting the collected signals to the counting module; The counting module is used for counting the data collected by the polling collection module, and outputting a control signal to the processor when the number of the counted data exceeds a set number; The processor controls the execution module to work after receiving the control signal from the counting module.

2. The automatic fire extinguishing control system for electrical cabinets according to claim 1, characterized in that, The polling collection module comprises a plurality of collection modules, the input ends of the plurality of collection modules are connected with the output ends of the sensor module respectively, the output ends of the plurality of collection modules are connected and an output end is arranged at the connection position as the output end of the polling collection module, and the output end of the polling collection module is connected with the counting module.

3. The automatic fire extinguishing control system for electrical cabinets according to claim 2, characterized in that, The collection module comprises a field effect tube, a diode, a photoelectric sensor, a triode and a plurality of resistors, the base of the triode is arranged as an input end one of the collection module, the collector of the triode is connected with the emission end one of the photoelectric sensor, the emitter of the triode is grounded, and the emission end two of the photoelectric sensor is connected with a power supply through a resistor; the drain of the field effect tube is connected with the receiving end one of the photoelectric sensor, and the connection position is grounded through a resistor, and the receiving end two of the photoelectric sensor is connected with a power supply through a resistor; the gate of the field effect tube is arranged as an input end two of the collection module, the source of the field effect tube is connected with the anode of the diode, and the connection position is grounded through a resistor; and the cathode of the diode is arranged as an output end of the collection module.

4. The automatic fire extinguishing control system for electrical cabinets of claim 1, wherein, The counting module comprises a first counter and a logic module, the input end of the logic module is connected with the output end of the polling collection module, and the output end of the logic module is connected with the counter; The logic module is used for ensuring the accuracy of the signals output by the polling collection module; The first counter is used for counting the number of high-level signals transmitted by the polling collection module.

5. An automatic fire extinguishing control system for an electrical cabinet according to claim 4, wherein The counting module further comprises a second counter, the output end of the second counter is connected with the reset end of the first counter, and the second counter is used for recording the number of signals transmitted by the polling collection module.

6. An automatic fire extinguishing control system for an electrical cabinet according to claim 5, wherein The counting module further comprises a delay circuit, the output end of the second counter is connected with the reset end of the first counter through the delay circuit.

7. The automatic fire extinguishing control system for electrical cabinets of claim 1, wherein, The sensor module comprises an infrared flame detector and a smoke temperature composite detector, the output end of the infrared flame detector and the output end of the smoke temperature composite detector are connected with the input end of the control module respectively.

8. The automatic fire extinguishing control system for electrical cabinets of claim 1, wherein, The execution module comprises a plurality of fire extinguishing modules, alarm modules and power-off modules, and the plurality of fire extinguishing modules, the alarm modules and the power-off modules are connected with the control module respectively.

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