CN110898351A - Electrical cabinet fireproof system and method - Google Patents
Electrical cabinet fireproof system and method Download PDFInfo
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- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
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Abstract
The invention discloses a fire prevention system and method for an electric cabinet, which comprises the following steps: the fire detection module is used for acquiring temperature detection information, smoke concentration information, video information and/or image information in the electrical cabinet in real time; the fire-proof control module is used for receiving the temperature detection information and the smoke concentration information, diagnosing and detecting the fire-proof grade based on the temperature detection information and the smoke concentration information, generating a warning instruction when judging that the fire-proof grade is the warning grade, starting an alarm, generating a fire-extinguishing instruction when judging that the fire-proof grade is the serious warning grade, and starting the alarm and a fire-extinguishing device; and the fire prevention monitoring module is used for receiving the video information and/or the image information and further determining a fire source when a fire occurs. The detection modes of the invention are various and complementary, single false alarm is avoided, no residue and no condensed water exist in the fire fighting process, no secondary accident is caused, and automatic detection, automatic alarm and automatic fire extinguishing are realized.
Description
Technical Field
The invention relates to the field of train safety fire prevention, in particular to a fire prevention system and method for an electric cabinet of a railway passenger vehicle.
Background
In the electrical cabinet of the railway passenger vehicle, a large number of low-voltage electrical appliances such as circuit breakers, contactors, relays and the like are integrated to realize power distribution control and logic control on the train, and whether the safety of the low-voltage electrical appliances is directly related to the normal operation of key subsystems such as train traction, braking, a network, a vehicle door, a PIS, an air conditioner and the like. Among them, low-voltage electrical appliances such as circuit breakers, contactors, relays and the like often cause local temperature rise or generate electric arcs and the like due to short circuits caused by insulation damage, overload of loads, phase-loss operation and the like, contact resistance increase caused by loosening of wiring terminals, environmental factors and the like. The light causes the train electrical system to be incapable of operating normally, and the heavy causes the train to have electrical fire accidents, causing casualties, property loss and environmental damage. How to discover equipment abnormity in time to prevent accidents is a major safety problem to be urgently solved by rail vehicles.
With the rapid development of computer technology, sensing detection technology, video processing technology and other technologies, the online fire-fighting system is widely applied to precision equipment of plants and laboratories, and provides a mature technical basis for the realization of the invention. Among the current train fire protection system, the type of fire detection equipment is comparatively single, causes the condition of wrong report alarm easily, detects, fire detection, warning, automatic fire extinguishing and the recovery of taking a breath and handles lack integrated automatic control. In addition, the fire extinguishing treatment cannot be carried out on the electrical cabinet under the condition of the failure of the fire protection system.
Disclosure of Invention
In order to solve the technical problem, the invention provides an electrical cabinet fire protection system, which comprises: the fire detection module is used for acquiring temperature detection information, smoke concentration information, video information and/or image information in the electrical cabinet in real time; the fire prevention control module is used for receiving the temperature detection information and the smoke concentration information, diagnosing and detecting the fire prevention grade according to the temperature detection information and the smoke concentration information, generating a warning instruction and starting an alarm when the fire prevention grade is judged to be a warning grade, and further generating a fire extinguishing instruction and starting the alarm and a fire extinguishing device when the fire prevention grade is judged to be a serious warning grade; and the fire prevention monitoring module is used for receiving the video information and/or the image information and determining a fire source under the condition that the fire prevention grade is a serious warning grade according to the video information and/or the image information.
Preferably, the fire protection control module is further configured to determine that the fire protection level in the electrical cabinet is a serious warning level currently when the temperature detection information and the smoke concentration information are detected to both exceed the corresponding temperature/concentration fire extinguishing threshold.
Preferably, the fire protection control module is further configured to determine that the fire protection level in the electrical cabinet is a warning level currently when it is detected that the temperature detection information exceeds the temperature fire extinguishing threshold or the smoke concentration information exceeds the concentration fire extinguishing threshold.
Preferably, the system further comprises a ventilation module, which is configured to respond to a ventilation instruction and to be activated if the ventilation instruction is valid, wherein the fire-fighting control module is configured to generate the ventilation instruction after generating the fire-fighting instruction if it is detected that the current temperature detection information is lower than the temperature fire-fighting threshold and the current smoke concentration information is lower than the concentration fire-fighting threshold.
Preferably, the fire protection control module comprises: the fire extinguishing device is used for responding to the fire extinguishing instruction, starting when the fire extinguishing instruction is effective, and releasing fire extinguishing gas in the fire extinguishing device; an alarm for responding to the warning instruction or the fire extinguishing instruction and starting when the warning instruction or the fire extinguishing instruction is effective; a fire protection controller for diagnosing the fire protection rating and generating a fire protection rating result including the warning instruction or the fire extinguishing instruction; a deflation indicator light for responding to the fire suppression instruction, activated when the fire suppression instruction is valid.
Preferably, the fire-fighting control module further comprises an emergency starting device, the emergency starting device is connected with the fire extinguishing device and is used for detecting the acquired emergency control signal, and under the condition that the emergency control signal is effective, the fire extinguishing instruction is generated to start the fire extinguishing device.
Preferably, the fire detection module includes: the smoke sensor is arranged at an air suction hole of the electric cabinet and used for acquiring the smoke concentration information at a corresponding position; the thermal imaging sensor is used for acquiring the temperature detection information of each temperature-prone point in the electrical cabinet; and the scanning camera is arranged at the top in the electrical cabinet and is used for acquiring the video information and/or the image information in the electrical cabinet.
Preferably, the fire detection module and the fire protection control module are connected in any one of the following manners: RS485 cable, or ethernet transmission cable, or CAN bus.
Preferably, the fire prevention monitoring module communicates with the fire prevention controller in the fire prevention control module, acquires and detects real-time working state information of each sensor in the fire prevention detection module and the fire extinguishing device, the alarm and the air bleeding indicator lamp in the fire prevention control module, judges the current working states of the fire prevention controller and the electrical cabinet fire prevention system based on the real-time working state information, and further generates the emergency control signal.
On the other hand, a fire protection method for an electrical cabinet is provided, and is characterized in that the method utilizes the system to perform fire protection control on the electrical cabinet, and the method comprises the following steps: the method comprises the following steps that firstly, a fire detection module acquires temperature detection information, smoke concentration information, video information and/or image information in an electrical cabinet in real time; the fire prevention control module receives the temperature detection information and the smoke concentration information, and diagnoses and detects the fire prevention level according to the temperature detection information and the smoke concentration information, wherein a warning instruction is generated to start an alarm when the fire prevention level is judged to be a warning level, and further a fire extinguishing instruction is generated to start the alarm and a fire extinguishing device when the fire prevention level is judged to be a serious warning level; and thirdly, the fire prevention monitoring module receives the video information and/or the image information and determines a fire source under the condition that the fire prevention grade is a serious warning grade according to the video information and/or the image information.
Compared with the prior art, one or more embodiments in the above scheme can have the following advantages or beneficial effects:
the invention provides a fire prevention system and method for an electric cabinet, which realize real-time online monitoring of fire conditions of the electric cabinet, have various and complementary detection modes, avoid single false alarm, have no residue and no condensed water in the fire fighting process, and cannot cause secondary accidents. In addition, the invention can automatically detect, automatically alarm and extinguish fire, update air and recover the field state, adopts a redundant structure, and automatically and manually controls to carry out emergency switching when necessary.
While the invention will be described in connection with certain exemplary implementations and methods of use, it will be understood by those skilled in the art that it is not intended to limit the invention to these embodiments. On the contrary, the intent is to cover all alternatives, modifications and equivalents as included within the spirit and scope of the invention as defined by the appended claims.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a block diagram of a fire protection system of an electrical cabinet according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an electrical cabinet fire protection system according to an embodiment of the present application.
Fig. 3 is a step diagram of an electrical cabinet fire protection method according to an embodiment of the present application.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
In the electrical cabinet of the railway passenger vehicle, a large number of low-voltage electrical appliances such as circuit breakers, contactors, relays and the like are integrated, and the devices are subjected to local temperature rise or arc generation due to short circuit caused by insulation damage, overload of loads, phase-loss operation and the like, contact resistance increase caused by loosening of wiring terminals, environmental factors and the like. The light causes the train electrical system to be incapable of operating normally, and the heavy causes the train to have electrical fire accidents, causing casualties, property loss and environmental damage. How to discover equipment abnormity in time to prevent accidents is a major safety problem to be urgently solved by rail vehicles. Among the current train fire protection system, the type of fire detection equipment is comparatively single, causes the condition of wrong report alarm easily, detects, fire detection, warning, automatic fire extinguishing and the recovery of taking a breath and handles lack integrated automatic control. In addition, the fire extinguishing treatment cannot be carried out on the electrical cabinet under the condition of the failure of the fire protection system.
The system and the method comprehensively judge the current electrical cabinet fire condition in a mode of detecting a temperature field through a thermal imaging sensor, detecting smoke concentration through a smoke sensor and detecting conditions in the electrical cabinet through a camera, have diversified detection modes and can avoid the condition of single false alarm. Furthermore, the fire extinguishing operation is carried out by adopting colorless, tasteless and secondary pollution-free fire extinguishing gas, and secondary accidents can not be caused by no condensed water. In addition, the invention adopts a redundant structure to detect the working state of each component in the fire extinguishing device, and can automatically and manually control to carry out emergency switching when the fire extinguishing device fails, so that the fire detection and fire spreading control in the electrical cabinet cannot be delayed due to the failure of the fire extinguishing device.
Fig. 1 is a block diagram of a fire protection system of an electrical cabinet according to an embodiment of the present application. As shown in fig. 1, an electrical cabinet fire protection system in an embodiment of the present invention includes: a fire detection module 100, a fire protection control module 200, and a fire protection monitoring module 300. The fire detection module 100 is configured to obtain temperature detection information, smoke concentration information, and video information and/or image information in the electrical cabinet in real time. Specifically, the fire detection module 100 is configured to obtain temperature detection information for each temperature-prone point in the electrical cabinet, smoke concentration information for different positions in the electrical cabinet, and video information and/or image information in the electrical cabinet in real time. The fire-proof control module 200 is configured to receive the temperature detection information and the smoke concentration information, and perform diagnosis and detection on the fire-proof level according to the temperature detection information and the smoke concentration information, wherein when the fire-proof level is determined to be a warning level, a warning instruction is generated to start the alarm 220, and further, when the fire-proof level is determined to be a serious warning level, a fire-extinguishing instruction is generated to start the alarm 220 and the fire-extinguishing device 230. Meanwhile, the fire-fighting control module 200 generates a corresponding fire-fighting rating result including the fire-fighting rating result and the fire situation processing result. The fire monitoring module 300 is configured to receive the video information and/or the image information, and determine a fire source in a case where the fire protection level is a serious warning level according to the video information and/or the image information.
It should be noted that, because a large number of low-voltage electrical appliances such as circuit breakers, contactors, relays and the like are integrated in the electrical cabinet, these devices often cause short circuits due to insulation damage, overload of load, phase-loss operation and the like, contact resistance increases due to loosening of the connection terminal, environmental factors, local temperature rise, or arcing and other phenomena. Therefore, according to the actual layout situation of the components including the wiring, the wiring terminal, each low-voltage control electrical appliance and the like in the electrical cabinet, the electrical area in the electrical cabinet, in which the components are concentrated, is divided into a plurality of temperature-raising areas (i.e., temperature-raising points), each temperature-raising point includes (part of) the wiring and/or (part of) the wiring terminal and/or the low-voltage control electrical appliances (wherein, the low-voltage control electrical appliances include circuit breakers, relays, contactors and other key electrical appliance elements) with different numbers, so that the temperature detection information representing the temperature-raising and heating situations of the temperature field of each temperature-raising point is obtained through related equipment, and the temperature data of the key devices and the wiring parts to be monitored in the temperature-raising points are further extracted from each temperature detection information, that is, the temperature field information in the entire electrical cabinet can be obtained.
Thus, the fire detection module 100 can be used for monitoring the temperature field and delay condition in the electrical cabinet in real time, and the level diagnosis process of the fire-proof control module 200 can be used for diagnosing fault fire in advance, and warning and prompting before fire occurs so as to inform related personnel of timely inspection and maintenance. Further, after the fire generating smoke occurs, the fire source is positioned through the fire monitoring module 300, and the alarm prompt and the fire extinguishing device 230 are started simultaneously to prevent further spreading of the fire, so that the preventive fire prevention of the train electrical equipment is achieved.
Example one
Fig. 2 is a schematic structural diagram of an electrical cabinet fire protection system according to an embodiment of the present application. Specifically, the fire detection module 100 and the fire protection control module 200 will be further described below. As shown in fig. 2, the fire detection module 100 at least includes: one or more smoke sensors 110, one or more thermal imaging sensors 120, and a scanning camera 130. The connection mode of the fire detection module 100 and the fire prevention control module 200 is any one of the following modes: RS485 cable, or ethernet transmission cable or CAN bus. It should be noted that the number and the positions of the smoke sensors 110 and the thermal imaging sensors 120 are set according to the actual layout of the components including the wiring, the wiring terminals, the low-voltage control devices, and the like in the electrical cabinet, which is not particularly limited in this embodiment of the present invention, and can be set by a person skilled in the art according to actual requirements. In addition, the type of the connection cable between the fire detection module 100 and the fire protection control module 200 is not particularly limited, and any one of the above-described modes may be adopted, or other modes may be adopted.
The smoke sensor 110 is installed at an air suction hole in the closed electrical cabinet, and is used for collecting smoke concentration information at a corresponding position according to a preset collection time interval (a certain collection frequency). Specifically, in one embodiment, the smoke sensor 110 is connected to the fire protection controller 210 in the fire protection control module 200 through an RS485 transmission cable, and the smoke sensor 110 samples gas in the enclosed space to detect smoke particle concentration, and sends detected concentration data (smoke concentration information) to the fire protection controller 210 through the RS485 transmission cable by using an RS485 protocol. Wherein, in one embodiment, the smoke concentration information is an electrical signal that characterizes smoke concentration data at the current location.
The thermal imaging sensor 120 is installed at each temperature-raising point in a preset electrical cabinet, and is configured to collect temperature detection information of each temperature-raising point in the electrical cabinet according to a preset collection time interval (a certain collection frequency). Specifically, in one embodiment, each thermal imaging sensor 120 is connected to the fire controller 210 in the fire control module 200 through an RS485 transmission cable, and each thermal imaging sensor 120 collects thermal imaging image data (temperature detection information) capable of representing the heating conditions including the wiring, and/or the connection terminal, and/or the low-voltage control device at the current temperature-susceptible point in real time, and sends the detected thermal imaging image data (temperature detection information) to the fire controller 210 through the RS485 transmission cable by using an RS485 protocol. It should be noted that, in the invention, the thermal imaging sensor device detects the temperature field information in the electrical cabinet, and compared with the conventional temperature sensor device, the thermal imaging sensor device can quickly and accurately reflect the surface temperature of an object, and can also utilize the self thermal radiation of the target to form an image to reflect the specific distribution of the regional temperature field. In addition, the thermal imaging sensor equipment can also be suitable for various severe weather conditions, the performance of the equipment can completely meet most military and civil requirements, and meanwhile, the miniaturization and low price of the equipment are the trend of future security monitoring.
In the fire protection system of the electrical cabinet according to the embodiment of the present invention, as shown in fig. 2, the fire detection module 100 includes a scanning camera 130 in addition to the smoke sensor 110 and the thermal imaging sensor 120. The scanning camera 130 is installed at the top of the electrical cabinet, and is configured to collect video information and/or image information inside the electrical cabinet in real time, and send the video information and/or image information to a fire monitoring module 300 in a fire protection system of the electrical cabinet.
Referring to fig. 2, next, the fire prevention control module 200 will be described in detail. The fire protection control module 200 includes a fire protection controller 210, an alarm 220, a fire suppression device 230, a bleed light indicator 240, and an emergency activation device 250. Among them, the fire protection controller 210 is mainly used to diagnose a fire protection rating and generate a fire protection rating result including a warning instruction or a fire extinguishing instruction, and further, the fire protection controller 210 includes at least a concentration processing unit 211, a temperature processing unit 212, a fire protection rating detection unit 213, and a fire situation processing unit 214.
Further, the concentration processing unit 211 in the fire protection controller 210 is configured to receive and obtain the smoke concentration information. The smoke density information includes information indicating a code of the position of the smoke sensor 110 corresponding to the information, and each piece of code information is used to determine the position of the smoke sensor 110 represented by the corresponding smoke density information. The unit 211 receives the smoke concentration information sent from the smoke sensor 110 through an RS485 protocol, and performs a series of pre-processing such as analog-to-digital conversion and filtering to obtain accurate smoke concentration information. The temperature processing unit 212 is configured to receive and acquire temperature detection information for each temperature susceptible point. The temperature detection information includes information indicating a code of the temperature rise facilitating point corresponding to the information, and each piece of code information is used to determine the position of the thermal imaging sensor 120 (i.e., the temperature rise facilitating point) represented by the corresponding temperature detection information. Specifically, the temperature processing unit 212 receives the temperature detection information sent from each thermal imaging sensor 120 through the RS485 protocol, and performs a series of pre-processing such as analog-to-digital conversion and filtering to obtain accurate temperature data for each pixel area in the image data, that is, temperature detection information (thermal imaging image data), where the temperature detection information (thermal imaging image data) includes the temperature data for each pixel area in the image data.
The fire-protection level detection unit 213 in the fire-protection controller 210 is configured to receive the smoke concentration information obtained from the concentration processing unit 211 and the temperature detection information for each temperature-susceptible point obtained from the temperature processing unit 212, perform temperature threshold detection, smoke threshold detection, and fire-protection level detection on the smoke concentration information(s) and the temperature detection information(s), respectively, according to a preset temperature fire-protection threshold and concentration fire-protection threshold, and generate a concentration detection result for the current smoke concentration information, a temperature detection result for the current temperature detection information, and a fire-protection level result. Specifically, when it is detected that the smoke concentration information collected by the smoke sensor 110 at the current position exceeds the concentration fire extinguishing threshold, the fire-protection level detection unit 213 marks the concentration detection result at the current time as a smoke abnormality. The fire-rating detecting unit 213 marks the temperature detection result at the present time as a temperature abnormality when each temperature data in the temperature detection information (thermal imaging image data) collected by the thermal imaging sensor 120 that detects the present easy-to-rise point has a pixel area exceeding the above-described temperature fire-extinguishing threshold.
Further, in one embodiment, the fire-rating detecting unit 213 in the fire-protection control module 200 determines that the current fire-rating (result) in the electrical cabinet is a serious warning rating when it detects that the temperature detection information exceeds the corresponding temperature fire-extinguishing threshold and the smoke concentration information exceeds the corresponding concentration fire-extinguishing threshold. Specifically, when the fire-protection level detection unit 213 detects that the smoke concentration information of the current location exceeds the above-mentioned concentration fire-extinguishing threshold, and each temperature data in the temperature detection information (thermal imaging image data) of the current temperature-susceptible point has a pixel area exceeding the above-mentioned temperature fire-extinguishing threshold, the current fire-protection level result in the electrical cabinet is marked as a serious warning level. That is to say, when the concentration detection result at the current moment is abnormal smoke and the temperature detection result at the current moment is abnormal temperature, the result of marking the fire-protection level in the current electrical cabinet is a serious warning level. At this time, fire-protection level detection section 213 generates a fire-protection level result including a serious warning level, position codes corresponding to smoke concentration information exceeding a concentration fire-extinguishing threshold, and abnormal smoke concentration information, and temperature-raising-susceptible point codes corresponding to temperature detection information exceeding a temperature fire-extinguishing threshold, and abnormal temperature detection information.
Further, in one embodiment, the fire-rating detecting unit 213 in the fire-protection control module 200 determines that the current fire-rating (result) in the electrical cabinet is a warning rating when detecting that the temperature detection information exceeds the corresponding temperature fire-extinguishing threshold or the smoke concentration information exceeds the corresponding concentration fire-extinguishing threshold. Specifically, when the fire-protection level detection unit 213 detects that smoke concentration information at the current location exceeds the above-mentioned concentration fire-extinguishing threshold, or each temperature data in the temperature detection information (thermal imaging image data) at the current temperature-susceptible point has a pixel area exceeding the above-mentioned temperature fire-extinguishing threshold, the current fire-protection level result in the electrical cabinet is marked as a warning level. That is to say, when the concentration detection result at the current moment is abnormal smoke or the temperature detection result at the current moment is abnormal temperature, the current fire-protection level result in the electrical cabinet is marked as a warning level. At this time, fire-protection level detection section 213 generates a fire-protection level result including a warning level, a position code corresponding to smoke concentration information exceeding a concentration fire-extinguishing threshold, smoke concentration information of the abnormality, a temperature-raising-prone point code corresponding to temperature detection information exceeding a temperature fire-extinguishing threshold, and temperature detection information of the abnormality.
In addition, when the fire-protection level detection unit 213 detects that the smoke concentration information collected by the smoke sensor 110 at each position is less than or equal to the concentration fire-extinguishing threshold, the fire-protection level detection unit 213 marks the concentration detection result at the current time as normal smoke. When each temperature data in the temperature detection information (thermal imaging image data) collected by the thermal imaging sensor 120 that detects each temperature susceptible point does not appear in a pixel region exceeding the temperature fire extinguishing threshold, the fire-protection level detection unit 213 marks the temperature detection result at the present time as temperature normality. Further, the fire-protection level detecting unit 213 determines that the current fire-protection level result in the electrical cabinet is a safety level when it is diagnosed that the temperature detection result is normal temperature and the smoke detection result is normal smoke. At this time, the fire-rating detection unit 213 generates a fire-rating result including the security rating.
Further, the fire condition processing unit 214 in the fire-fighting control module 200 is connected to the fire-fighting class detection unit 213, and is configured to receive the fire-fighting class result sent from the fire-fighting class detection unit 213, analyze the fire-fighting class result, detect the current fire-fighting class, and generate a corresponding fire condition processing result including a warning instruction or a fire-fighting instruction. The current fire processing result comprises all information before the analysis of the fire-proof grade result, current fire time and corresponding processing mode information. Specifically, in the first embodiment, the fire processing unit 214 generates a warning instruction and transmits the warning instruction to the alarm 220 when detecting that the current fire protection level is a warning level. Meanwhile, the fire processing unit 214 generates processing mode information including a valid warning instruction (indicating that a warning instruction has been transmitted for the current fire) and an alarm activation signal (indicating that the alarm 220 has been activated for the current fire) for the current fire after detecting a valid alarm activation signal. Further, the alarm 220 is activated after receiving a valid warning command, generates an alarm activation signal and feeds the signal back to the fire processing unit 214.
Further, in the second embodiment, the fire processing unit 214 generates a fire extinguishing instruction and transmits the fire extinguishing instruction to the alarm 220, the fire extinguishing apparatus 230 and the air bleeding indication lamp 240 when detecting that the current fire protection level is a serious warning level. Meanwhile, after detecting a valid alarm activation signal, a valid fire extinguishing apparatus activation signal, and a valid indicator light activation signal, the fire processing unit 214 generates processing mode information for the current fire including a valid fire extinguishing instruction (indicating that a fire extinguishing instruction has been sent for the current fire), an alarm activation signal (indicating that the alarm 220 has been activated for the current fire), a fire extinguishing apparatus activation signal (indicating that the fire extinguishing apparatus 230 has been activated for the current fire), and an indicator light activation signal (indicating that the deflating indicator light 240 has been activated for the current fire). Further, the alarm 220 is activated after receiving a valid fire extinguishing command, generates an alarm activation signal and feeds back the signal to the fire processing unit 214. The fire extinguishing device 230 is activated upon receiving a valid fire extinguishing command, generates a fire extinguishing device activation signal and feeds this signal back to the fire management unit 214. In addition, the gas discharge indicator lamp 240 is activated after receiving a valid fire extinguishing command, generates an indicator lamp activation signal, and feeds back the signal to the fire management unit 214.
Referring again to fig. 2, the alarm 220 in the fire-fighting control module 200 is installed outside the cabinet of the electrical cabinet, and is configured to detect and respond to the warning command or the fire-fighting command sent by the fire processing unit 214, and is activated when the warning command or the fire-fighting command is detected to be valid. In the embodiment of the invention, the alarm 220 is a sound-light alarm device, and can be started according to the acquired warning instruction or fire extinguishing instruction when the electrical cabinet is in an abnormal condition, so that the alarm 220 can send out corresponding warning indication sound and turn on a warning indicator lamp to prompt a worker to perform corresponding inspection no matter the alarm is in a prevention warning level before a fire or in a serious warning level during the fire.
The fire extinguishing device 230 in the fire-fighting control module 200 is installed inside the electrical cabinet, and is configured to detect and respond to the fire extinguishing command sent by the fire condition processing unit 214, and start when detecting that the fire extinguishing command is valid, and release the fire extinguishing gas inside the fire extinguishing device. In one embodiment, the fire suppressing gas inside the fire suppression apparatus 230 is heptafluoropropane gas, which causes the apparatus 230 to release the heptafluoropropane gas inside after the fire suppression apparatus 230 detects a valid fire suppression instruction. It should be noted that the heptafluoropropane gas has characteristics of no color, no odor, no electric conduction, no secondary pollution, no condensed water generated from the gas during a fire fighting process, and short residence time in the atmosphere, so that no secondary accident is caused, and thus, when the fire controller 210 detects the occurrence of a fire, it can play a role in controlling the fire and extinguishing the fire.
In addition, the fire protection control module 200 also includes a bleed light indicator 240. The air discharge indicator lamp 240 is installed outside the cabinet body of the electrical cabinet, and is used for detecting and responding to the fire extinguishing instruction sent by the fire processing unit 214, and when the fire extinguishing instruction is detected to be effective, the air discharge indicator lamp is started and lighted. It should be noted that the gas discharge indicator lamp 240 is activated synchronously with the fire extinguishing apparatus 230, so that when the fire controller 210 detects a fire, on one hand, the fire extinguishing gas can be released through the fire extinguishing apparatus 230, and meanwhile, the gas discharge indicator lamp 240 is turned on to indicate to relevant personnel that the gas is currently discharged and extinguished in the electrical cabinet, so as to indicate that the gas is not discharged.
Referring again to fig. 2, the fire protection system for an electrical cabinet in an embodiment of the present invention further includes a ventilation module 400. The ventilation module 400 is configured to detect and respond to a ventilation command and is activated when the ventilation command is detected to be valid. The ventilation module 400 after starting accelerates the diffusion speed of the fire extinguishing gas and smoke in the electrical cabinet through the operation of the internal exhaust fan, so that the electrical cabinet starts the fire extinguishing device 230 to release the air after the fire extinguishing gas is renewed, the field state is recovered, and the maintenance is convenient for the workers.
The fire protection controller 210 in the fire protection control module 200 is further configured to generate a ventilation instruction after the fire extinguishing instruction is generated, if it is detected that the current temperature detection information is lower than the temperature fire extinguishing threshold and the current smoke concentration information is lower than the concentration fire extinguishing threshold. Specifically, after sending the corresponding fire extinguishing instruction, the fire processing unit 214 in the fire protection controller 210 generates a ventilation instruction when detecting that the current fire protection level is the safety level by analyzing the result of the current fire protection level, so as to drive the exhaust fan in the ventilation module 400 to operate.
The fire protection system of the electrical cabinet further comprises a fire monitoring module 300 connected to the fire controller 210 in the fire protection control module 200. The fire prevention monitoring module 300 is built in an industrial personal computer (not shown) in the electrical cabinet, and mainly implements localized real-time monitoring, referring to fig. 1 again, the fire prevention control module 300 at least includes a video information obtaining unit 311.
The video information acquisition unit 311 in the fire prevention monitoring module 300 is connected to the scanning camera 130 in the fire detection module 200, and is configured to acquire and store video information and/or image information in the electrical cabinet acquired by the scanning camera 130 in real time, determine a fire source when a fire occurs according to the video information and/or image information by using an image and/or video processing technology, and further display the fire source through a display (not shown) connected to an industrial personal computer of the electrical cabinet. Specifically, the module 311 frames the video information, and further extracts the image frames of all the temperature-prone points from the image information directly acquired by the scanning camera 130 and the key frame image obtained through the framing processing. Then, median filtering, binarization and gray level feature extraction processing are carried out on the image picture. And then, further utilizing a preset sliding window to perform sliding scanning on the image picture subjected to the gray characteristic processing, screening out a picture pixel region matched with a pre-constructed fire source characteristic model and locking the picture pixel region, thereby determining the fire source of the video information and/or the image information.
It should be noted that the fire source characteristic model is a model that includes multiple kinds of fire source characteristic information and satisfies the fire source (picture) constraint condition, and the model is used to diagnose whether the characteristics in the sampling picture (image picture matched with the size of the sliding window) scanned for each sliding match the characteristics in the model that satisfy the fire source constraint condition. Further, when the sampling picture meets the constraint condition of the fire source, determining the video information and/or the image information corresponding to the current sampling picture as the picture of the fire source, and calibrating the sampling picture.
In addition, the video information obtaining unit 311 in the fire monitoring module 300 is configured to retrieve, according to the obtained query range information (in an embodiment, the query range information is obtained by means of user input), the video information and/or the image information that matches the query range information, so as to perform display output. Wherein the query scope information includes a query time scope. By acquiring video information and/or image information within a relevant time range, a maintainer can master the fire source in the electrical cabinet and accurately position the reason of the fire accident.
Example two
In the embodiment of the present invention, the fire protection controller 210 in the fire protection control module 200 further includes: an operating state detection unit 215. The operation state detection unit 215 is connected to each of the smoke sensors 110, each of the thermal imaging sensors 120, the alarm 220, the fire extinguishing device 230, and the gas discharge indicator 240, and is connected to the concentration processing unit 211, the temperature processing unit 212, and the fire processing unit 214 in the fire protection controller 210, and is configured to detect the operation states of each sensor in the fire detection module 100, and the fire extinguishing device 230, the alarm 220, and the gas discharge indicator 240 in the fire control module 200, and generate real-time operation state information for each component. Wherein, the real-time working state information at least comprises: a part code (e.g., the code for the smoke sensor 110 is a position code and the code for the thermal imaging sensor 120 is a code corresponding to a temperature susceptible point) and a part status.
Specifically, the operation state detection unit 215 acquires and detects in real time an alarm response signal for the alarm 220, a fire extinguishing device response signal for the fire extinguishing device 230, and an indicator light response signal for the gas bleeding indicator light 240, which are transmitted from the fire condition processing unit 214 in the fire protection controller 210, while also acquiring and detecting in real time a smoke sensor response signal for each smoke sensor 110, which is transmitted from the concentration processing unit 211, and a thermal imaging sensor response signal for each thermal imaging sensor 120, which is transmitted from the temperature processing unit 212. Further, if it is detected that the time corresponding to the one or more response signals being in the invalid state exceeds a preset fault state time threshold, the operating state information of the components corresponding to the invalid response signals is generated, and the component state in the operating state information of each component is marked as a fault state. And if the time corresponding to the one or more response signals in the invalid state is not detected to exceed a preset fault state time threshold or the one or more response signals in the valid state, generating working state information of the components corresponding to the response signals, and marking the component state in the working state information of each component as a normal state.
Further, the concentration processing unit 211 detects the device response message in the 485 protocol to determine whether the communication of each smoke sensor 110 connected to the unit 211 is normal. When an error device response message is not received, the concentration processing unit 211 determines that the current smoke sensor 110 is in normal communication, and sends an effective smoke sensor response signal for the current smoke sensor 110 to the working state detection unit 215; otherwise, an invalid smoke sensor response signal is sent for the current smoke sensor 110.
Further, similarly, the temperature processing unit 212 determines whether the communication of each thermal imaging sensor 120 connected to the unit 212 is normal by detecting the device response message in the 485 protocol. When an error device response message is not received, the temperature processing unit 212 determines that the current thermal imaging sensor 120 is in normal communication, and sends a valid thermal imaging sensor response signal for the current thermal imaging sensor 120 to the working state detection unit 215; otherwise, an invalid thermal imaging sensor response signal for the current thermal imaging sensor 120 is sent.
Further, the fire processing unit 214 generates response signals for the alarm 220, the fire extinguishing device 230, and the gas discharge lamp 240 by detecting the alarm activation signal, the fire extinguishing device activation signal, and the lamp activation signal. Specifically, when detecting that the alarm activation signal is in the high impedance state, the fire processing unit 214 sends an alarm response signal to the operation state detection unit 215, the alarm response signal being invalid with respect to the alarm 220; otherwise, a valid alarm response signal for alarm 220 is sent. When detecting that the fire extinguishing apparatus activation signal is in the high impedance state, the fire processing unit 214 transmits a fire extinguishing apparatus response signal to the operating state detection unit 215, the fire extinguishing apparatus response signal being invalid with respect to the fire extinguishing apparatus 230; otherwise, a valid fire suppression device response signal is sent for the fire suppression device 230. When detecting that the indicator lamp activation signal is in the high impedance state, the fire processing unit 214 sends an indicator lamp response signal to the operating state detection unit 215, the indicator lamp response signal being invalid for the deflating indicator lamp 240; otherwise, a valid indicator response signal for the deflate indicator 240 is sent.
EXAMPLE III
In the electrical cabinet fire protection system according to the embodiment of the present invention, as shown in fig. 2, the fire protection monitoring module 300 further includes a working state recording unit 312, a fire processing recording unit 313, a system state monitoring unit 314, and a remote transmission unit 315. The following describes the various units within the fire monitoring module 300.
The working state recording unit 312 in the fire protection monitoring module 300 is connected to the system state monitoring unit 314, which is described below, and is used for receiving and recording real-time working state information of each smoke sensor 110, each thermal imaging sensor 120, the alarm 220, the fire extinguishing device 230, the gas discharge indicator lamp 240, the fire protection controller 210 and the electrical cabinet fire protection system.
The fire processing recording unit 313 is connected to the fire processing unit 214 in the fire protection controller 210, and is configured to receive and store the fire processing result. Wherein, the fire processing result comprises: and the fire-proof grade result, the fire condition time and the corresponding processing mode information are obtained. Therefore, the fire condition in the electrical cabinet can be known in real time.
Next, the system state monitoring unit 314 will be explained. The system status monitoring unit 314 in the fire monitoring module 300 communicates with the fire controller 210 in the fire control module 200, and is configured to acquire and detect real-time operating status information of each sensor in the fire detection module 100, the fire extinguishing apparatus 230, the alarm 220, and the gas discharge indicator 240 in the fire control module 200, determine the current operating status of the fire controller 210 and the fire protection system of the electrical cabinet based on the real-time operating status information, and further generate an emergency control signal when determining that the status of the fire protection system of the electrical cabinet is a failure status, thereby establishing an electrical control connection channel between the emergency starting apparatus 250 and the fire extinguishing apparatus 230. Here, the emergency control signal is in an inactive or active state, and specifically, in one embodiment, the current emergency control signal is in an inactive state, which indicates that the conduction state between the emergency starting device 250 and the fire extinguishing device 230 can be implemented in a signal (emergency control signal) controlled manner. Further, the system status monitoring unit 314 establishes an electrically controlled connection between the discharge indicator lamp 240 and the fire extinguishing device 230 in addition to the electrically controlled connection between the emergency starting device 250 and the fire extinguishing device 230 after generating the emergency control signal. Wherein, in one embodiment, the inactive state of the emergency control signal indicates that the conducting states between the emergency starting device 250 and the fire extinguishing device 230 and between the discharge indicator lamp 240 and the fire extinguishing device 230 can be implemented in a signal (emergency control signal) controlled manner.
In addition, the system status monitoring unit 314 detects the operating status of the fire protection controller 210 in the fire protection control module 200 by detecting the data integrity of the operating status information for each component, and generates real-time operating status information for the fire protection controller 210. The generation of the emergency control signal establishes an electrically controlled connection channel between the following emergency starting device 250 for manual triggering and the fire extinguishing device 230, so that the fire extinguishing device 230 can be started by the fire extinguishing instruction at present, and the fire extinguishing device 230 can be started after the emergency starting device 250 is triggered by a manual control mode in an emergency. Specifically, the system status monitoring unit 314 is configured to obtain real-time operating status information for each smoke sensor 110, each thermal imaging sensor 120, the alarm 220, the fire extinguishing device 230, the gas discharge indicator 240, and the fire protection controller 210 from the operating status recording unit 312 connected to the system status monitoring unit 314, analyze and detect each piece of real-time operating status information, and based on this, further determine the status of the fire protection system of the electrical cabinet by determining the operating status of each component in the fire detection module 100 and the fire protection control module 200.
In the first embodiment, when the component state of one or more components is judged to be a fault state, the state of the fire protection system of the electrical cabinet is judged to be a fault state, and at the moment, an emergency starting instruction is generated, and an electrically-controlled connecting channel of the emergency starting device 250 and the fire extinguishing device 230 is established. In a second embodiment, when the component state of each component is judged to be a normal state, the state of the fire protection system of the electrical cabinet is judged to be a normal state and an electrified state. In a third embodiment, when the component state of each component is judged to be a fault state, the state of the fire protection system of the electrical cabinet is judged to be a power-off state. In the fourth embodiment, the system status monitoring unit 314 is further configured to obtain a real-time fire processing result from the fire processing unit 214 in the fire protection controller 210, and if the system status monitoring unit 314 detects that the current fire rating is an alarm rating or a serious alarm rating when the electrical cabinet fire protection system is in a normal state and an energized state, determine that the electrical cabinet fire protection system is in an alarm state.
In addition, the system status monitoring unit 314 may further acquire smoke concentration information and temperature detection information acquired in real time from the concentration processing unit 211 and the temperature processing unit 212 in the fire protection controller 210, respectively, display the real-time temperature detection information for each thermal imaging sensor 120 on a display (not shown) connected to an industrial personal computer of an electrical cabinet, draw the smoke concentration information for each smoke sensor 110 into a corresponding concentration change curve, and display the concentration change curve corresponding to each smoke sensor 110 on the display. Further, after the system status monitoring unit 314 generates the invalid emergency control signal, it may display the generated emergency control signal on a display (for example, yellow dots indicate the invalid status of the emergency control signal, gray dots indicate the high-impedance status of the emergency control signal, and green dots indicate the valid status of the emergency control signal).
Referring again to fig. 2, the above-described fire protection control module 200 further includes an emergency starting device 250. The emergency starting device 250 is installed outside the cabinet body of the electrical cabinet or at a cab console, connected to the fire extinguishing device 230, and configured to detect the acquired emergency control signal, and generate a fire extinguishing instruction to start the fire extinguishing device 250 when the emergency control signal is detected to be valid. In the embodiment of the present application, the emergency starting apparatus 250 includes a button device (not shown), and when the current state of the fire protection system of the electrical cabinet is a fault state (or, when an emergency control signal is generated), it indicates that the current fire protection system of the electrical cabinet cannot accurately detect and control the fire inside the electrical cabinet, at this time, the fire protection apparatus 230 may be started by a fire protection instruction generated by the fire protection control module 200, and the fire protection apparatus 230, or the fire protection apparatus 230 and the gas discharge indicator 240 may be controlled by a manual control manner of the emergency starting apparatus 250, so that the functions of waking up the fire protection apparatus 230, or the fire protection apparatus 230 and the gas discharge indicator 240 by automatically switching the manual control manner when necessary are realized.
Specifically, if the monitoring personnel observe the fire condition in the electrical cabinet through the video information acquisition unit 311 in the fire prevention monitoring module 300, the button device in the emergency starting device 250 is manually pressed, so that the emergency starting device 250 detects an effective emergency control signal and generates a fire extinguishing instruction, and the fire extinguishing device 230 is started in a manual control mode.
Further, the remote transmission unit 315 communicates with a master control server in the train cab through a train network, and specifically, the remote transmission unit 315 may send information, such as temperature detection information, smoke concentration information, a state (information) of the fire protection system of the electrical cabinet, a fire processing result, and the like, acquired in real time to the master control server, so that a worker in the train cab can master a fire in the electrical cabinet at any time.
On the other hand, the invention also provides a fire prevention method for the electrical cabinet, which utilizes the electrical cabinet fire prevention system to perform fire prevention control on the electrical cabinet, wherein each device, module, sub-module, unit and the like related by the method have the functions of corresponding equipment in the electrical cabinet fire prevention system. Fig. 3 is a step diagram of an electrical cabinet fire protection method according to an embodiment of the present application. Referring to fig. 3, the following describes the procedure of the fire protection method for the electrical cabinet.
In step S310, the fire detection module 100 obtains temperature detection information, smoke concentration information, and video information and/or image information in the electrical cabinet in real time. Specifically, the fire detection module 100 obtains temperature detection information for each temperature-prone point in the electrical cabinet, smoke concentration information for different positions in the electrical cabinet, and video information and/or image information in the electrical cabinet in real time. Further, the fire detection module 100 collects thermal imaging image information of each temperature-raising point according to a preset collection time interval (a certain collection frequency) by using one or more thermal imaging sensors 120 inside the fire detection module and transmits the thermal imaging image information as temperature detection information to the fire control module 200 through an RS485 transmission cable. Similarly, the fire detection module 100 collects smoke concentration data at different positions in the electrical cabinet according to a preset collection time interval (a certain collection frequency) by using one or more smoke sensors 110 inside the fire detection module, and transmits the smoke concentration data as smoke concentration information to the fire prevention control module 200 through an RS485 transmission cable. In addition, the fire detection module 100 utilizes the scanning camera 130 therein to collect video information and/or image information inside the electrical cabinet in real time, and sends the video information and/or image information to the fire monitoring module 300.
Then, the process proceeds to step S320. (step S320) the fire-fighting control module 200 receives the temperature detection information and the smoke concentration information, and diagnoses and detects the fire-fighting class according to the temperature detection information and the smoke concentration information, wherein when the fire-fighting class is determined to be the warning class, a warning instruction is generated to start the alarm 220, and further, when the fire-fighting class is determined to be the serious warning class, a fire-fighting instruction is generated to start the alarm 220 and the fire-fighting device 230. Meanwhile, the fire-fighting control module 200 generates a corresponding fire-fighting rating result including the fire-fighting rating result and the fire situation processing result. Specifically, the concentration processing unit 211 and the temperature processing unit 212 in the fire-protection control module 200 respectively receive corresponding smoke concentration information and temperature detection information and perform corresponding preprocessing, and send the preprocessed smoke concentration information and temperature detection information to the fire-protection level detection unit 213 for temperature threshold detection, smoke threshold detection, and fire-protection level detection.
In one embodiment, the fire-rating detecting unit 213 in the fire-protection control module 200 determines that the current fire-rating (result) in the electrical cabinet is a warning rating when detecting the temperature fire-extinguishing threshold corresponding to the temperature detection information or the smoke concentration information exceeds the corresponding concentration fire-extinguishing threshold. At this time, fire-protection level detection section 213 generates a fire-protection level result including a serious warning level, position codes corresponding to smoke concentration information exceeding a concentration fire-extinguishing threshold, and abnormal smoke concentration information, and temperature-raising-susceptible point codes corresponding to temperature detection information exceeding a temperature fire-extinguishing threshold, and abnormal temperature detection information. Meanwhile, the fire condition processing unit 214 in the fire-fighting control module 200 receives the fire-fighting level result, analyzes the fire-fighting level result, detects the current fire-fighting level, and generates a corresponding fire condition processing result including a warning instruction or a fire-fighting instruction. Specifically, when detecting that the fire protection level in the electrical cabinet is a warning level, the fire processing unit 214 generates a warning instruction and sends the warning instruction to the alarm 220. Further, the alarm 220 in the fire-protection control module 200 is activated when detecting that the warning instruction is valid, so that the alarm 220 emits a corresponding warning indication sound and a warning indication lamp is turned on under the condition of a prevention warning level before a fire occurs, so as to prompt a worker to perform a corresponding check to prompt the worker to perform a corresponding check.
In one embodiment, the fire-rating detection unit 213 in the fire-protection control module 200 determines that the current fire-rating (result) in the electrical cabinet is a serious warning rating when detecting that the temperature detection information exceeds the corresponding temperature fire-extinguishing threshold and the smoke concentration information exceeds the corresponding concentration fire-extinguishing threshold. At this time, fire-protection level detection section 213 generates a fire-protection level result including a serious warning level, position codes corresponding to smoke concentration information exceeding a concentration fire-extinguishing threshold, and abnormal smoke concentration information, and temperature-raising-susceptible point codes corresponding to temperature detection information exceeding a temperature fire-extinguishing threshold, and abnormal temperature detection information. Meanwhile, the fire condition processing unit 214 in the fire-fighting control module 200 receives the fire-fighting level result, analyzes the fire-fighting level result, detects the current fire-fighting level, and generates a corresponding fire condition processing result including a warning instruction or a fire-fighting instruction. Specifically, when detecting that the fire protection level in the electrical cabinet is a serious warning level, the fire processing unit 214 generates a fire extinguishing instruction and sends the fire extinguishing instruction to the alarm 220, the fire extinguishing device 230 and the air bleeding indicator lamp 240, and the alarm 220, the fire extinguishing device 230 and the air bleeding indicator lamp 240 in the fire protection control module 200 are started when detecting that the fire extinguishing instruction is valid. Further, the alarm 220 in the fire-fighting control module 200 is started when detecting that the fire-fighting instruction is valid, so that the alarm 220 emits corresponding warning indication sound and a warning indication lamp is turned on under the condition of serious warning level in the occurrence of a fire, so as to prompt a worker to perform corresponding inspection; the fire extinguishing device 230 in the fire-fighting control module 200 is activated when detecting that the fire-fighting command is valid, and releases the heptafluoropropane gas inside, so that the fire control device can control the fire and extinguish the fire when detecting that the fire is occurring in the fire-fighting controller 210. In addition, the gassing pilot lamp 240 in the fire prevention control module 200 starts and lights when detecting that the instruction of putting out a fire is effective to the suggestion relevant personnel are at the gassing and putting out a fire in the regulator cubicle at present, thereby the suggestion gassing is not gone into.
In addition, the ventilation module 400 in the fire protection system of the electrical cabinet is started when the ventilation command is detected to be effective. The ventilation module 400 after starting accelerates the diffusion speed of the fire extinguishing gas and smoke in the electrical cabinet through the operation of the internal exhaust fan, so that the electrical cabinet starts the fire extinguishing device 230 to release the air after the fire extinguishing gas is renewed, the field state is recovered, and the maintenance is convenient for the workers. After the fire protection controller 210 (fire processing unit 214) in the fire protection control module 200 generates the fire protection instruction, if it is detected that the current temperature detection information is lower than the temperature fire protection threshold and the current smoke concentration information is lower than the concentration fire protection threshold, a ventilation instruction is generated.
Finally, in step S330, the fire monitoring module 300 receives the video information and/or the image information, and determines a fire source in the case that the fire protection rating is a serious warning rating according to the video information and/or the image information. Specifically, the video information acquisition unit 311 in the fire prevention monitoring module 300 is connected to the scanning camera 130 in the fire detection module 200, acquires and stores video information and/or image information in the electrical cabinet acquired by the scanning camera 130 in real time, determines a fire source when a fire occurs according to the video information and/or image information, and further displays the fire source through a display connected to an industrial personal computer of the electrical cabinet. In addition, the video information obtaining unit 311 in the fire monitoring module 300 is configured to retrieve, according to the obtained query range information (in an embodiment, the query range information is obtained by means of user input), the video information and/or the image information that matches the query range information, so as to perform display output. Wherein the query scope information includes a query time scope.
Further, the system status monitoring unit 314 in the fire monitoring module 300 communicates with the fire controller 210 in the fire control module 200, acquires and detects real-time working status information of each sensor in the fire detection module 100 and the fire extinguishing device 230, the alarm 220 and the gas discharge indicator 240 in the fire control module 200, and based on this, respectively determines the current working status of the fire controller 210 and the electrical cabinet fire prevention system, and further generates an emergency control signal when determining that the status of the electrical cabinet fire prevention system is a fault status, thereby establishing an electrical control connection channel between the emergency starting device 250 and the fire extinguishing device 230. The generation of the emergency control signal establishes an electric control connection channel between the emergency starting device 250 and the fire extinguishing device 230, which are used for manual triggering in the fire protection system of the electrical cabinet, so that the fire extinguishing device 230 can be started through the fire extinguishing instruction at present, and the fire extinguishing device 230 can be started after the emergency starting device 250 is triggered in a manual control mode in an emergency, so that the function of awakening the fire extinguishing device 230 by automatically switching the manual control mode when necessary is realized.
Further, the system status monitoring unit 314 establishes an electrically controlled connection between the discharge indicator lamp 240 and the fire extinguishing device 230 in addition to the electrically controlled connection between the emergency starting device 250 and the fire extinguishing device 230 after generating the emergency control signal. Therefore, the fire extinguishing device 230 and the air bleeding indicator lamp 240 can be started by the fire extinguishing instruction, and the fire extinguishing device 230 and the air bleeding indicator lamp 240 can be started after the emergency starting device 250 is triggered by a manual control mode in an emergency, so that the function of awakening the fire extinguishing device 230 and the air bleeding indicator lamp 240 by automatically switching the manual control mode when necessary is realized.
The invention provides a safety fire prevention system and a method for an electric cabinet of a railway passenger vehicle, wherein the system and the method integrate fire detection, prevention alarm, automatic fire extinguishing and air recovery, the current electric cabinet fire is comprehensively judged in a mode of detecting a temperature field through a thermal imaging sensor, detecting smoke concentration through a smoke sensor and detecting the condition in the electric cabinet through a camera, the detection modes are diversified, and the condition of single false alarm can be avoided. Furthermore, the fire extinguishing operation is carried out by adopting colorless, tasteless and secondary pollution-free fire extinguishing gas, and secondary accidents can not be caused by no condensed water. In addition, the invention adopts a redundant structure to detect the working state of each component in the fire extinguishing device, and can automatically and manually control to carry out emergency switching when the fire extinguishing device fails, so that the fire detection and fire spreading control in the electrical cabinet cannot be delayed due to the failure of the fire extinguishing device.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An electrical cabinet fire protection system comprising:
the fire detection module is used for acquiring temperature detection information, smoke concentration information, video information and/or image information in the electrical cabinet in real time;
the fire prevention control module is used for receiving the temperature detection information and the smoke concentration information, diagnosing and detecting the fire prevention grade according to the temperature detection information and the smoke concentration information, generating a warning instruction and starting an alarm when the fire prevention grade is judged to be a warning grade, and further generating a fire extinguishing instruction and starting the alarm and a fire extinguishing device when the fire prevention grade is judged to be a serious warning grade;
and the fire prevention monitoring module is used for receiving the video information and/or the image information and determining a fire source under the condition that the fire prevention grade is a serious warning grade according to the video information and/or the image information.
2. The system of claim 1,
the fire protection control module is further configured to determine that the fire protection level in the electrical cabinet is a serious warning level when it is detected that the temperature detection information and the smoke concentration information both exceed corresponding temperature/concentration fire extinguishing thresholds.
3. The system according to claim 1 or 2,
the fire protection control module is further configured to determine that the fire protection level in the electrical cabinet is a warning level when it is detected that the temperature detection information exceeds the temperature fire extinguishing threshold or the smoke concentration information exceeds the concentration fire extinguishing threshold.
4. The system of claim 3, further comprising a ventilation module for initiating, in response to a ventilation instruction, if the ventilation instruction is valid, wherein,
the fire prevention control module is configured to generate the ventilation instruction after the fire extinguishing instruction is generated, if it is detected that the current temperature detection information is lower than the temperature fire extinguishing threshold and the current smoke concentration information is lower than the concentration fire extinguishing threshold.
5. The system of any one of claims 1 to 4, wherein the fire protection control module comprises:
the fire extinguishing device is used for responding to the fire extinguishing instruction, starting when the fire extinguishing instruction is effective, and releasing fire extinguishing gas in the fire extinguishing device;
an alarm for responding to the warning instruction or the fire extinguishing instruction and starting when the warning instruction or the fire extinguishing instruction is effective;
a fire protection controller for diagnosing the fire protection rating and generating a fire protection rating result including the warning instruction or the fire extinguishing instruction;
a deflation indicator light for responding to the fire suppression instruction, activated when the fire suppression instruction is valid.
6. The system of claim 5, wherein the fire protection control module further comprises an emergency activation device,
the emergency starting device is connected with the fire extinguishing device and used for detecting the acquired emergency control signal and generating the fire extinguishing instruction to start the fire extinguishing device under the condition that the emergency control signal is effective.
7. The system of claim 5 or 6, wherein the fire detection module comprises:
the smoke sensor is arranged at an air suction hole of the electric cabinet and used for acquiring the smoke concentration information at a corresponding position;
the thermal imaging sensor is used for acquiring the temperature detection information of each temperature-prone point in the electrical cabinet;
and the scanning camera is arranged at the top in the electrical cabinet and is used for acquiring the video information and/or the image information in the electrical cabinet.
8. The system of claim 7, wherein the fire detection module is connected to the fire protection control module in any one of the following ways: RS485 cable, or ethernet transmission cable, or CAN bus.
9. The system of claim 6, wherein the fire monitoring module is in communication with the fire controller in the fire control module, acquires and detects real-time operating status information for each sensor in the fire detection module and the fire extinguishing device, the alarm and the gas discharge indicator in the fire control module, determines the current operating status of the fire controller and the fire protection system of the electrical cabinet based on the real-time operating status information, and further generates the emergency control signal.
10. A fire protection method for an electrical cabinet, wherein the method is used for controlling fire protection of the electrical cabinet by using the system as claimed in any one of claims 1 to 9, and the method comprises the following steps:
the method comprises the following steps that firstly, a fire detection module acquires temperature detection information, smoke concentration information, video information and/or image information in an electrical cabinet in real time;
the fire prevention control module receives the temperature detection information and the smoke concentration information, and diagnoses and detects the fire prevention level according to the temperature detection information and the smoke concentration information, wherein a warning instruction is generated to start an alarm when the fire prevention level is judged to be a warning level, and further a fire extinguishing instruction is generated to start the alarm and a fire extinguishing device when the fire prevention level is judged to be a serious warning level;
and thirdly, the fire prevention monitoring module receives the video information and/or the image information and determines a fire source under the condition that the fire prevention grade is a serious warning grade according to the video information and/or the image information.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111613003A (en) * | 2020-06-03 | 2020-09-01 | 上海海事大学 | Intelligent distribution box for temperature monitoring, fire detection and fire extinguishing |
| CN111696771A (en) * | 2020-06-03 | 2020-09-22 | 黑龙江省广利达智能电气设备制造有限公司 | Skid-mounted transformer device and using method thereof |
| CN111821616A (en) * | 2020-07-15 | 2020-10-27 | 博众精工科技股份有限公司 | Fire control system and method for charging and replacing power station |
| CN111991733A (en) * | 2020-07-24 | 2020-11-27 | 国网湖南省电力有限公司 | Gas-liquid double-fluid mixing atomization fire extinguishing device and fire extinguishing method |
| CN112562246A (en) * | 2020-11-05 | 2021-03-26 | 广东电网有限责任公司广州供电局 | Fire monitoring system for electrical equipment |
| CN113808357A (en) * | 2021-09-06 | 2021-12-17 | 云智光(深圳)科技有限公司 | Intelligent fire extinguishing remote control system |
| CN113877102A (en) * | 2021-11-10 | 2022-01-04 | 国网青海省电力公司 | Intelligent fire detection and extinguishing system based on closed switch cabinet |
| CN113926109A (en) * | 2021-10-21 | 2022-01-14 | 安徽中盛轨道交通产业有限公司 | Automatic fire extinguishing system for electric appliance cabinet of subway train carriage |
| CN114842610A (en) * | 2022-05-30 | 2022-08-02 | 深圳市旭景数字技术有限公司 | Intelligent monitoring system based on Internet of things |
| CN116153016A (en) * | 2023-04-23 | 2023-05-23 | 四川三思德科技有限公司 | Multi-sensor fusion forest fire real-time monitoring and early warning device and method thereof |
| CN117767124A (en) * | 2023-11-10 | 2024-03-26 | 江苏诺金电气科技有限公司 | High-low voltage power distribution cabinet with fireproof monitoring function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202740667U (en) * | 2012-07-30 | 2013-02-20 | 湖北航天技术研究院特种车辆技术中心 | Automatic fire extinguishing explosion suppression device |
| CN103830866A (en) * | 2013-09-10 | 2014-06-04 | 烟台启能电子科技有限公司 | Fire detection, prevention and control system of electronic control cabinet and control method thereof |
| CN203777548U (en) * | 2014-02-24 | 2014-08-20 | 钟海平 | Mixed early warning cabinet fire extinguishing device |
| US9251682B2 (en) * | 2010-09-30 | 2016-02-02 | Gantel Properties Ltd | System and method for fire preventing in electrical installations |
| CN205051178U (en) * | 2015-09-02 | 2016-02-24 | 江西省新顿电源科技有限公司 | Safety protection switch board |
-
2018
- 2018-09-18 CN CN201811085979.1A patent/CN110898351A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9251682B2 (en) * | 2010-09-30 | 2016-02-02 | Gantel Properties Ltd | System and method for fire preventing in electrical installations |
| CN202740667U (en) * | 2012-07-30 | 2013-02-20 | 湖北航天技术研究院特种车辆技术中心 | Automatic fire extinguishing explosion suppression device |
| CN103830866A (en) * | 2013-09-10 | 2014-06-04 | 烟台启能电子科技有限公司 | Fire detection, prevention and control system of electronic control cabinet and control method thereof |
| CN203777548U (en) * | 2014-02-24 | 2014-08-20 | 钟海平 | Mixed early warning cabinet fire extinguishing device |
| CN205051178U (en) * | 2015-09-02 | 2016-02-24 | 江西省新顿电源科技有限公司 | Safety protection switch board |
Non-Patent Citations (2)
| Title |
|---|
| 王伯铭等: "《高速动车组总体及转向架》", 30 June 2008, 西南交通大学出版社 * |
| 颜景林: "《城市轨道交通设备》", 30 November 2012, 西南交通大学出版社 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111613003A (en) * | 2020-06-03 | 2020-09-01 | 上海海事大学 | Intelligent distribution box for temperature monitoring, fire detection and fire extinguishing |
| CN111696771A (en) * | 2020-06-03 | 2020-09-22 | 黑龙江省广利达智能电气设备制造有限公司 | Skid-mounted transformer device and using method thereof |
| CN111696771B (en) * | 2020-06-03 | 2021-06-15 | 黑龙江省广利达智能电气设备制造有限公司 | Skid-mounted transformer device and using method thereof |
| CN111821616A (en) * | 2020-07-15 | 2020-10-27 | 博众精工科技股份有限公司 | Fire control system and method for charging and replacing power station |
| CN111991733A (en) * | 2020-07-24 | 2020-11-27 | 国网湖南省电力有限公司 | Gas-liquid double-fluid mixing atomization fire extinguishing device and fire extinguishing method |
| CN112562246A (en) * | 2020-11-05 | 2021-03-26 | 广东电网有限责任公司广州供电局 | Fire monitoring system for electrical equipment |
| CN113808357A (en) * | 2021-09-06 | 2021-12-17 | 云智光(深圳)科技有限公司 | Intelligent fire extinguishing remote control system |
| CN113926109A (en) * | 2021-10-21 | 2022-01-14 | 安徽中盛轨道交通产业有限公司 | Automatic fire extinguishing system for electric appliance cabinet of subway train carriage |
| CN113877102A (en) * | 2021-11-10 | 2022-01-04 | 国网青海省电力公司 | Intelligent fire detection and extinguishing system based on closed switch cabinet |
| CN114842610A (en) * | 2022-05-30 | 2022-08-02 | 深圳市旭景数字技术有限公司 | Intelligent monitoring system based on Internet of things |
| CN116153016A (en) * | 2023-04-23 | 2023-05-23 | 四川三思德科技有限公司 | Multi-sensor fusion forest fire real-time monitoring and early warning device and method thereof |
| CN117767124A (en) * | 2023-11-10 | 2024-03-26 | 江苏诺金电气科技有限公司 | High-low voltage power distribution cabinet with fireproof monitoring function |
| CN117767124B (en) * | 2023-11-10 | 2024-05-17 | 江苏诺金电气科技有限公司 | High-low voltage power distribution cabinet with fireproof monitoring function |
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