CN114821948B - Fire alarm method and equipment for electric vehicle frame - Google Patents
Fire alarm method and equipment for electric vehicle frame Download PDFInfo
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- CN114821948B CN114821948B CN202210456315.1A CN202210456315A CN114821948B CN 114821948 B CN114821948 B CN 114821948B CN 202210456315 A CN202210456315 A CN 202210456315A CN 114821948 B CN114821948 B CN 114821948B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims abstract description 6
- 239000002826 coolant Substances 0.000 claims description 56
- 238000007789 sealing Methods 0.000 claims description 21
- 238000010586 diagram Methods 0.000 claims description 10
- 238000003331 infrared imaging Methods 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 description 6
- 230000006698 induction Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009432 framing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Classifications
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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
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- Emergency Management (AREA)
- Physics & Mathematics (AREA)
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- Fire-Detection Mechanisms (AREA)
Abstract
The invention relates to the technical field of electric vehicles, and discloses a fire alarm method and equipment for an electric vehicle frame, wherein the fire alarm equipment for the electric vehicle frame comprises a fire alarm device, a fire alarm device and a fire alarm control device, wherein the fire alarm device comprises a fire alarm device and a fire alarm device: and the infrared imager is arranged on the frame and is used for sensing the temperature change on the frame and generating a thermal image signal. The fire control subassembly distributes in the inside of frame, and it is used for carrying out location cooling to the frame inside. The controller is used for receiving the thermal image signal of the infrared imager and carrying out standardization processing on the thermal image; comparing the thermal image obtained by the controller with a preset temperature image, if the temperature corresponding to the image at one position in the thermal image is higher than the preset temperature, sending an alarm signal by the controller, positioning the image at the position higher than the preset temperature, and marking a heat source point; the controller controls the fire-fighting assembly to cool the position of the heat source point of the frame. And the alarm is used for alarming. The invention can accurately locate and alarm and carry out locating and cooling.
Description
Technical Field
The invention relates to the technical field of electric vehicles, in particular to a fire alarm method and equipment for an electric vehicle frame.
Background
With the development of science and technology, the population is dramatically increased, and traffic is a focus of attention. Vehicles are the primary tools of vehicles. Electric vehicles are a trend of future development. Electric vehicles, i.e., electrically driven vehicles, are classified into ac electric vehicles and dc electric vehicles. In general, an electric vehicle uses a battery as an energy source, and converts electric energy into mechanical energy to move through a controller, a motor and other components, so as to control the current magnitude and change the speed.
The electric vehicle comprises a vehicle frame, the existing electric vehicle frame comprises a head pipe, a front main pipe, the top end of the front main pipe is connected with the rear surface of the head pipe, the front main pipe is bent backwards at the bottom of the vehicle body and horizontally extends to the middle of the vehicle body, the vehicle frame comprises a square battery frame which is horizontally arranged, and the front end of the battery frame is fixedly connected with the front end part of the front main pipe through a front connecting piece. The frame forms a supporting structure, and when each part of the electric vehicle heats and fires, the frame can be induced. The existing electric vehicle has poor fire-fighting monitoring capability.
Disclosure of Invention
In order to solve the technical problems, the invention provides a fire alarm device for an electric vehicle frame, which comprises: the system comprises an infrared imager, a controller, an alarm and a fire-fighting component;
the infrared imaging instrument is arranged on the frame and is used for sensing the temperature change on the frame and generating a thermal image signal;
the fire-fighting assembly is distributed in the frame and is used for positioning and cooling the inside of the frame;
the controller is used for receiving the thermal image signal of the infrared imager and carrying out standardization processing on the thermal image; comparing the thermal image obtained by the controller with a preset temperature image, if the temperature corresponding to the image at one position in the thermal image is higher than the preset temperature, sending an alarm signal by the controller, positioning the image at the position higher than the preset temperature, and marking a heat source point; the controller controls the fire-fighting assembly to cool the position of the heat source point of the frame;
and the alarm is used for receiving the alarm signal of the controller and giving an alarm.
Preferably: the fire alarm device for the electric vehicle frame further comprises: and the display piece is connected with the controller and used for inputting data and displaying positioning information.
Preferably: the fire alarm device for the electric vehicle frame further comprises a three-dimensional scene construction module, wherein the three-dimensional scene construction module is electrically connected with the infrared imaging devices and the display piece, the two infrared imaging devices are arranged, a three-dimensional simulation scene with the screen frame and the heat source point position distributed is constructed, and three-dimensional display is performed through the display piece.
Preferably: when the alarm gives an alarm, the display piece performs three-dimensional scene flashing positioning.
Preferably: the alarm signal of the controller is outputted in a step mode, and the alarm gives an alarm corresponding to the step.
Preferably: the step alarm is carried out according to preset different grade temperatures P 0 、P 1 ；
According to the temperature P corresponding to the thermal image signal of the infrared imager, comparing with the preset grade temperature, and obtaining a corresponding alarm grade:
P<＝P 0 then not alarm prompt is carried out；
P 0 <P<＝P 1 Performing low-level risk alarm prompt;
P 1 <and P, performing high-level risk alarm prompt.
Preferably: the fire-fighting assembly comprises a cooling agent bottle, a conveying pipe, a valve and a mouth plug, wherein the cooling agent bottle is detachably and fixedly connected to the frame, the interior of the cooling agent bottle is used for containing cooling agent, the conveying pipe is arranged in the frame in a communicated manner, the valve is arranged at the outlet of the cooling agent bottle and connected with the controller, and the valve is used for controlling the cooling agent bottle to be communicated with the conveying pipe; the conveying pipe is provided with a plurality of drain holes, an embedded frame is fixedly arranged in the drain holes, one end of a thermal expansion rod is fixedly connected to the embedded frame, the other end of the thermal expansion rod is fixedly connected with a mouth plug, and when the thermal expansion rod is not heated, the mouth plug is embedded into the drain holes to seal the drain holes; when one position point of the frame is heated, the corresponding thermal expansion rod is heated, and the thermal expansion rod expands to enable the opening plug to move, so that the drain opening is opened.
Preferably: the valve comprises a fixing frame, an electromagnet, a spring, a magnet and a sealing piece, wherein the fixing frame is fixedly connected to a cooling agent bottle, the electromagnet is fixedly connected to the fixing frame, the end part of the conveying pipe is slidably nested in the outlet of the cooling agent bottle, the outer wall of the end part of the conveying pipe is fixedly connected with a fixing ring, the magnet is fixedly connected to the fixing ring, and the magnet is opposite to the electromagnet in position; a spring is arranged between the fixed ring and the fixed frame, the inner end of the conveying pipe is connected with a sealing sheet through a connecting frame, and the sealing sheet stretches into the cooling agent bottle.
The invention also provides a fire alarm method for the electric vehicle frame, which is applied to the fire alarm equipment for the electric vehicle frame and comprises the following steps of:
s1, receiving a thermal image signal of an infrared imager, and carrying out standardization processing on a thermal image;
s2, comparing the thermal image with a preset temperature, judging whether the temperature corresponding to the temperature in the thermal image is greater than the preset temperature, and if so, executing S3;
s3, sending an alarm signal;
s4, positioning the graph color of the temperature position which is larger than the preset temperature position, and marking a heat source point;
s5, controlling the fire-fighting assembly to cool the position of the heat source point of the frame.
Preferably: the standardized processing steps are as follows:
s11, confirming a thermal image original drawing;
s12, carrying out normalized projection on the original thermal image, and flattening;
s13, separating the background of the thermal image flattening image to obtain a frame image of the frame;
s14, comparing the frame diagram of the frame with a standard frame of the frame, and correcting the thermal image to obtain a thermal image standard diagram;
s15, carrying out smooth processing on the thermal image standard graph.
The invention has the technical effects and advantages that: according to the invention, the heat source point is positioned and judged through the infrared imager, so that the accurate positioning can be performed, the heat source position can be rapidly identified, and the accurate aiming treatment is facilitated. The blindness of the response is avoided, and the response efficiency is improved. The fire can be extinguished by the fire-fighting assembly, so that the temperature can be reduced rapidly. Deterioration of the heat source is avoided.
Drawings
Fig. 1 is a block diagram of a fire alarm device for an electric vehicle frame according to the present invention.
Fig. 2 is a schematic perspective view of a conveying pipe in a fire alarm device for an electric vehicle frame.
Fig. 3 is a schematic perspective view of a cooling agent bottle in a fire alarm device for an electric vehicle frame according to the present invention.
Fig. 4 is a schematic diagram of the internal structure of a cooling agent bottle in the fire alarm device for the electric vehicle frame.
Fig. 5 is a schematic diagram of the internal structure of a drain hole in the fire alarm device for an electric vehicle frame according to the present invention.
Fig. 6 is a flowchart of a fire alarm method for an electric vehicle frame according to the present invention.
Fig. 7 is a flowchart of a standardized processing method in the fire alarm method for the electric vehicle frame.
Fig. 8 is a schematic diagram of alarm level judgment in the fire alarm device for the electric vehicle frame.
Reference numerals illustrate: the cooling device comprises a conveying pipe 11, a port plug 12, a drain port 13, a cooling agent bottle 14, a fixing frame 15, an electromagnet 16, a spring 17, a second magnet 18, a fixing ring 19, a connecting frame 20, a sealing sheet 21, an embedded frame 22 and a thermal expansion rod 23.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Example 1
Referring to fig. 1, in this embodiment, a fire alarm device for an electric vehicle frame is provided, which is configured to perform heat induction and alarm on the electric vehicle frame, where the fire alarm device for an electric vehicle frame: infrared imager, controller, alarm and fire control subassembly.
And the infrared imaging instrument is arranged on the frame and is used for sensing the temperature change on the frame and generating a thermal image signal. Two infrared imagers may be provided, both forming a planar thermal image signal. When the electric vehicle frame is a battery bicycle, the two infrared imagers can be arranged on the handlebar, and the two infrared imagers can perform heat induction on the frame and can form a thermal image signal with a certain visual angle with the frame. When the electric vehicle is an electric vehicle, one infrared imager can be arranged on the roof or the bottom of the vehicle, and the other infrared imager is arranged on the head or the tail of the vehicle, so that a three-dimensional detection scene can be formed, and detailed description is omitted.
Referring to fig. 3, the fire-fighting assembly is distributed inside the frame for positioning and cooling the inside of the frame.
And the controller can be electrically connected or wirelessly connected with the infrared imager, can be arranged on the frame and can also be connected with the background control center. The controller receives the thermal image signal of the infrared imager, and as the infrared imager and the frame have a certain visual angle, the thermal image is not a front thermal image, and the thermal image is required to be standardized, the specific steps of the standardized process include: 1. confirming a thermal image original picture, 2, carrying out normalized projection on the thermal image original picture, flattening the thermal image original picture to obtain a thermal image with the same proportion as that of a frame structure, 3, carrying out background separation on the thermal image flattened picture to obtain a frame picture of the frame, 4, comparing the frame picture of the frame with a standard frame of the frame, and correcting the thermal image to obtain a thermal image standard picture. For example, flattened thermal images may have wrinkles, distortions, etc., which are compared to standard framing of the frame, to conform the thermal image to the frame framing. 5. And (3) carrying out smooth treatment, namely treating the miscellaneous points and the miscellaneous colors which are not in the standard framework of the frame on the thermal image standard graph to obtain the planar thermal image graph. When the number of the infrared imagers is two, the controller fits the plane thermal image maps of the two infrared imagers to construct a solid thermal image map. The two signals can form a stereoscopic thermal image by sensing with two infrared imagers. Just like the two eyes of a human being, three-dimensional visual effects can be formed when the eyes are two. And comparing the thermal image obtained by the controller with a preset temperature image, and if the temperature corresponding to the image color at one position in the thermal image is higher than the preset temperature, sending an alarm signal by the controller, positioning the image color at the position higher than the preset temperature by the controller, and marking a heat source point. The controller controls the fire-fighting assembly to cool the position of the heat source point of the frame. The specific structure of the controller is the prior art and will not be described here in detail.
And the alarm is connected with the controller and used for receiving the alarm signal of the controller and giving an alarm. The alarm may be an audible alarm, a flashing alarm or an audible and visual alarm.
And the display piece is connected with the controller and is used for inputting data (such as preset temperature) and displaying positioning information (such as the position of a heat source point). The fire alarm device for the electric vehicle frame further comprises a three-dimensional scene construction module, wherein the three-dimensional scene construction module is electrically connected with the infrared imaging device and the display piece, and the two infrared imaging devices are arranged at the moment and used for positioning heat source points, constructing a three-dimensional simulation scene of the distribution of the screen frame and the heat source points and displaying three-dimensionally through the display piece. The three-dimensional simulation scene is constructed as a prior art and is not described herein. The three-dimensional structure of the internal structure of the vehicle frame is built through the three-dimensional scene building module, and heat source points are distributed in the three-dimensional structure and correspond to actual positions, so that the temperature rising positions can be conveniently displayed and positioned. The three-dimensional structure model is built through the display piece, the position of the heat source point is displayed, the positioning is convenient and quick, the three-dimensional structure can be displayed through the cooperation of various colors and the temperature, the observation is clear, and the detailed description is omitted. When the alarm gives an alarm, the display piece performs three-dimensional scene flashing positioning, and performs flashing alarm on the heat source point, so that the prompting capability is strong.
Referring to fig. 8, the alarm signal of the controller is outputted stepwise, and the alarm gives an alarm of the corresponding stepwise.
According to preset different grade temperatures P 0 、P 1 Representing low risk and high risk, respectively. (this detailed analysis is not an important aspect of the present invention and will not be described in detail
According to the temperature P corresponding to the thermal image signal of the infrared imager, the corresponding alarm grade can be obtained by comparing the temperature P with the preset grade temperature:
①P<＝P 0 alarm prompt is not carried out, and the process is possibly influenced by factors such as sun exposure, environment and the like;
②P 0 <P<＝P 1 carrying out low-level risk alarm prompt and prompt checking treatment;
③P 1 <and P, performing high-level risk alarm prompt, and prompting to perform immediate fire extinguishing (cooling) operation.
The fire alarm device for the electric vehicle frame can be further provided with a storage part, data storage is carried out through the storage part, historical induction signals can be stored, and the controller extracts data from the storage part and displays the data through a display part or can derive an induction signal curve so as to check the history. So that the operating heat production trend of the electric vehicle or the change of the electric vehicle caused by environmental influence can be observed.
Example 2
Referring to fig. 2 and 5, the fire-fighting assembly includes a cooling agent bottle 14, a conveying pipe 11, a valve and a plug 12, the cooling agent bottle 14 is detachably and fixedly connected to the frame, the cooling agent bottle 14 is used for containing cooling agent, and the cooling agent can be dry ice or the like, which is not described in detail herein. There is a high pressure inside the coolant bottle 14. The outlet of the cooling agent bottle 14 is communicated with a conveying pipe 11, the conveying pipe 11 is arranged in the frame, and a valve is arranged at the outlet of the cooling agent bottle 14 and connected with a controller for controlling the communication between the cooling agent bottle 14 and the conveying pipe 11. The conveying pipe 11 is provided with a plurality of drain holes 13, the drain holes 13 are positioned at points on the frame where heat sources possibly occur, an embedded frame 22 is fixedly arranged in the drain holes 13, one end of a thermal expansion rod 23 is fixedly connected to the embedded frame 22, the other end of the thermal expansion rod 23 is fixedly connected with a hole plug 12, and when the thermal expansion rod 23 is not heated, the hole plug 12 is embedded into the drain holes 13 to seal the drain holes 13. When a point of the frame is heated, the corresponding thermal expansion rod 23 is heated, and the thermal expansion rod 23 expands to move the plug 12, thereby opening the drain hole 13. The controller sends out a cooling signal, the valve is opened, and the cooling agent in the cooling agent bottle 14 enters the conveying pipe 11 and is discharged from the discharging port 13 at the heated position, so that cooling is performed.
Referring to fig. 3 and 4, the valve comprises a fixing frame 15, an electromagnet 16, a spring 17, a magnet 18 and a sealing piece 21, wherein the fixing frame 15 is fixedly connected to a cooling agent bottle 14, the fixing frame 15 can be connected to the outer wall of the cooling agent bottle 14 in a threaded, clamping and other modes, the electromagnet 16 is fixedly connected to the fixing frame 15, the end part of a conveying pipe 11 is slidably nested inside the outlet of the cooling agent bottle 14, a fixing ring 19 is fixedly connected to the outer wall of the end part of the conveying pipe 11, the magnet 18 is fixedly connected to the fixing ring 19, and the position of the magnet 18 is opposite to that of the electromagnet 16. A spring 17 is arranged between the fixed ring 19 and the fixed frame 15, the inner end of the conveying pipe 11 is connected with a sealing piece 21 through a connecting frame 20, and the sealing piece 21 stretches into the cooling agent bottle 14. Under the effect of spring 17 and the inside high pressure of coolant bottle 14, conveyer pipe 11 keeps away from coolant bottle 14 and slides, and sealing piece 21 forms seal structure with the inner wall of coolant bottle 14, and through the inside high pressure of spring 17 and coolant bottle 14 cooperatees mutually, can increase the leakproofness of coolant bottle 14, has avoided the coolant to reveal, and the leakproofness of sealing piece 21 is stronger the higher pressure to avoided the high pressure to cause revealing. When the electromagnet 16 receives the fire extinguishing signal, the electromagnet 16 attracts the magnet 18, so that the sealing piece 21 overcomes the high pressure, and the cross section area of the sealing piece can be smaller, thereby facilitating the release of pressure. The delivery pipe 11 and the coolant bottle 14 are communicated. The control is convenient and quick.
Example 3
Referring to fig. 6, the invention further provides a fire alarm method for an electric vehicle frame, which comprises the following steps:
s1, receiving a thermal image signal of an infrared imager, and carrying out standardization processing on a thermal image;
s2, comparing the thermal image with a preset temperature, judging whether the temperature corresponding to the temperature in the thermal image is greater than the preset temperature, and if so, executing S3;
s3, sending an alarm signal.
S4, positioning the graph color of the temperature position which is larger than the preset temperature position, and marking the heat source point.
S5, controlling the fire-fighting assembly to cool the position of the heat source point of the frame.
Referring to fig. 7, the normalization process steps are as follows:
s11, confirming the original thermal image.
And S12, carrying out normalized projection on the thermal image original image, and flattening.
S13, separating the background of the thermal image flattening image to obtain a frame image of the vehicle frame.
S14, comparing the frame diagram of the frame with a standard frame of the frame, and correcting the thermal image to obtain a thermal image standard diagram.
S15, carrying out smooth processing on the thermal image standard graph.
As a preferred embodiment of the present invention, there is provided a computer terminal for implementing the steps of the fire alarm method for an electric vehicle frame described above when executing a computer program stored in a memory. The computer terminal can be a computer, a smart phone, a control system, other internet of things equipment and the like. The fire alarm method for electric vehicle frame may be designed into embedded program for installing on computer terminal, such as single chip microcomputer.
As a preferred embodiment of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon. When the program is executed by the processor, the steps of the fire alarm method for the electric vehicle frame are realized. When the fire alarm method for the electric vehicle frame is applied, the fire alarm method can be applied in the form of software, for example, a program which can be independently operated by a computer readable storage medium is designed, the computer readable storage medium can be a U disk, the U disk is designed as a U shield, and the program for starting the whole method by external triggering is designed through the U disk.
The computer program when executed by the processor realizes the steps of the fire alarm method for the electric vehicle frame.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (3)
1. The fire alarm equipment for the electric vehicle frame is characterized in that: the system comprises an infrared imager, a controller, an alarm and a fire-fighting component;
the infrared imaging instrument is arranged on the frame and is used for sensing the temperature change on the frame and generating a thermal image signal;
the fire-fighting assembly is distributed in the frame and is used for positioning and cooling the inside of the frame; the fire-fighting assembly comprises a cooling agent bottle, a conveying pipe, a valve and a mouth plug, wherein the cooling agent bottle is detachably and fixedly connected to the frame, the interior of the cooling agent bottle is used for containing cooling agent, the conveying pipe is arranged in the frame in a communicated manner, the valve is arranged at the outlet of the cooling agent bottle and connected with the controller, and the valve is used for controlling the cooling agent bottle to be communicated with the conveying pipe; the conveying pipe is provided with a plurality of drain holes, an embedded frame is fixedly arranged in the drain holes, the embedded frame is fixedly connected with one end of the thermal expansion rod, the other end of the thermal expansion rod is fixedly connected with a hole plug, and when the thermal expansion rod is not heated, the hole plug is embedded into the drain holes to seal the drain holes; when one position point of the frame is heated, the corresponding thermal expansion rod of the position is heated, and the thermal expansion rod
Expanding to move the plug and open the drain;
the controller is used for receiving the thermal image signal of the infrared imager and carrying out standardization processing on the thermal image; comparing the thermal image obtained by the controller with a preset temperature image, if the temperature corresponding to the image at one position in the thermal image is higher than the preset temperature, sending an alarm signal by the controller, positioning the image at the position higher than the preset temperature, and marking a heat source point; the controller controls the fire-fighting assembly to cool the position of the heat source point of the frame;
an alarm for receiving the alarm signal and giving an alarm;
the fire alarm device for the electric vehicle frame further comprises: the display piece is connected with the controller and is used for inputting data and displaying positioning information;
the fire alarm device for the electric vehicle frame further comprises a three-dimensional scene construction module, wherein the three-dimensional scene construction module is electrically connected with the infrared imaging devices and the display piece, the two infrared imaging devices are arranged, a three-dimensional simulation scene with the screen frame and the heat source point positions distributed is constructed, and three-dimensional display is carried out through the display piece;
when the alarm gives an alarm, the display piece performs three-dimensional scene flashing positioning;
the alarm signal of the controller is outputted in a step mode, and the alarm gives an alarm corresponding to the step;
the alarm of the ladder is based on preset different grade temperatures P 0 、P 1 ；
According to the temperature P corresponding to the thermal image signal of the infrared imager, comparing with the preset grade temperature, and obtaining a corresponding alarm grade:
P<=P 0 alarm prompt is not carried out;
P 0 <P<=P 1 performing low-level risk alarm prompt;
P 1 <p, performing high-level risk alarm prompt;
the fire-fighting assembly comprises a cooling agent bottle, a conveying pipe, a valve and a mouth plug, wherein the cooling agent bottle is detachably and fixedly connected to the frame, the interior of the cooling agent bottle is used for containing cooling agent, the conveying pipe is arranged in the frame in a communicated manner, the valve is arranged at the outlet of the cooling agent bottle and connected with the controller, and the valve is used for controlling the cooling agent bottle to be communicated with the conveying pipe; the conveying pipe is provided with a plurality of drain holes, an embedded frame is fixedly arranged in the drain holes, the embedded frame is fixedly connected with one end of the thermal expansion rod, the other end of the thermal expansion rod is fixedly connected with a hole plug, and when the thermal expansion rod is not heated, the hole plug is embedded into the drain holes to seal the drain holes; when one position point of the frame is heated, the thermal expansion rod corresponding to the position is heated, and the thermal expansion rod expands to enable the opening plug to move, so that the drain opening is opened;
the valve comprises a fixing frame, an electromagnet, a spring, a magnet and a sealing piece, wherein the fixing frame is fixedly connected to a cooling agent bottle, the electromagnet is fixedly connected to the fixing frame, the end part of the conveying pipe is slidably nested in the outlet of the cooling agent bottle, the outer wall of the end part of the conveying pipe is fixedly connected with a fixing ring, the magnet is fixedly connected to the fixing ring, and the magnet is opposite to the electromagnet in position; a spring is arranged between the fixed ring and the fixed frame, the inner end of the conveying pipe is connected with a sealing sheet through a connecting frame, and the sealing sheet stretches into the cooling agent bottle; under the action of the spring and the high pressure inside the cooling agent bottle, the conveying pipe slides away from the cooling agent bottle, the sealing piece forms a sealing structure with the inner wall of the cooling agent bottle, and the sealing performance of the cooling agent bottle can be improved through the auxiliary matching of the spring and the high pressure inside the cooling agent bottle, so that the leakage of the cooling agent is avoided, the sealing performance of the sealing piece is stronger when the pressure is higher, and the leakage caused by the high pressure is avoided; when the electromagnet receives a fire extinguishing signal, the electromagnet adsorbs the magnet, so that the sealing piece overcomes high pressure, and the cross section area of the sealing piece can be smaller, thereby facilitating pressure release; the conveying pipe is communicated with the cooling agent bottle; the control is convenient and quick.
2. The fire alarm method for the electric vehicle frame, which is applied to the fire alarm equipment for the electric vehicle frame according to claim 1, is characterized by comprising the following steps:
s1, receiving a thermal image signal of an infrared imager, and carrying out standardization processing on a thermal image;
s2, comparing the thermal image with a preset temperature, judging whether the temperature corresponding to the temperature in the thermal image is greater than the preset temperature, and if so, executing S3;
s3, sending an alarm signal;
s4, positioning the graph color of the temperature position which is larger than the preset temperature position, and marking a heat source point;
s5, controlling the fire-fighting assembly to cool the position of the heat source point of the frame.
3. The fire alarm method for an electric vehicle frame according to claim 2, wherein the standardized processing steps are as follows:
s11, confirming a thermal image original drawing;
s12, carrying out normalized projection on the original thermal image, and flattening;
s13, separating the background of the thermal image flattening image to obtain a frame image of the frame;
s14, comparing the frame diagram of the frame with a standard frame of the frame, and correcting the thermal image to obtain a thermal image standard diagram;
s15, carrying out smooth processing on the thermal image standard graph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112138303A (en) * | 2020-09-25 | 2020-12-29 | 微火智联(北京)生物科技有限公司 | Heat source detection equipment, battery pack and vehicle |
| CN212541537U (en) * | 2020-07-31 | 2021-02-12 | 国网四川省电力公司成都供电公司 | Oil level and temperature infrared thermal imaging double-light monitoring device for oil filling equipment of transformer substation |
| CN113663255A (en) * | 2021-10-25 | 2021-11-19 | 江苏云电守卫电力科技有限公司 | Control device and method for electrical signal equipment |
| CN113694443A (en) * | 2021-09-29 | 2021-11-26 | 斯惠威(成都)科技有限公司 | Compressed air foam automatic fire extinguishing system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212541537U (en) * | 2020-07-31 | 2021-02-12 | 国网四川省电力公司成都供电公司 | Oil level and temperature infrared thermal imaging double-light monitoring device for oil filling equipment of transformer substation |
| CN112138303A (en) * | 2020-09-25 | 2020-12-29 | 微火智联(北京)生物科技有限公司 | Heat source detection equipment, battery pack and vehicle |
| CN113694443A (en) * | 2021-09-29 | 2021-11-26 | 斯惠威(成都)科技有限公司 | Compressed air foam automatic fire extinguishing system |
| CN113663255A (en) * | 2021-10-25 | 2021-11-19 | 江苏云电守卫电力科技有限公司 | Control device and method for electrical signal equipment |
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