CN112129414A - Multispectral image type fire detector - Google Patents
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- CN112129414A CN112129414A CN202011000358.6A CN202011000358A CN112129414A CN 112129414 A CN112129414 A CN 112129414A CN 202011000358 A CN202011000358 A CN 202011000358A CN 112129414 A CN112129414 A CN 112129414A
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- G—PHYSICS
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0014—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation from gases, flames
- G01J5/0018—Flames, plasma or welding
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
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Abstract
The invention discloses a multispectral image type fire detector which comprises an upper cover, a main body and an interface, wherein the main body comprises a detection component and a function expansion board; the detection assembly comprises a panel, and a light supplement lamp panel and a high-definition color module which are arranged on the panel and are used for acquiring images or videos and network transmission of the images or videos; the thermal imaging module is used for detecting and sensing the flame and temperature change of the fire to form a thermal imaging image; the photosensitive module is used for sensing the change of light; the function expansion board is provided with a power supply system and a micro-processing system, and the micro-processing system is used for processing data interaction between the thermal imaging module and the high-definition color module; the network transmission system is used for network video data transmission and network custom protocol data transmission of the thermal imaging module and the high-definition color module; the switching value system is used for outputting the action of the fire alarm relay and the action of the fault relay and controlling the equipment to reset; and a light supplement module.
Description
Technical Field
The invention relates to the technical field of fire alarm, in particular to a multispectral image type fire detector.
Background
The safety is the 'lifeline' of the nuclear power, and national requirements on the nuclear power are 'must absolutely guarantee safety', 'safety is greater than day', 'safety is up' which are marked in the heart of each nuclear industry worker. Among the many factors that threaten nuclear safety, a "fire" is nondeterministically destructive, and once it occurs, its impact surface is often difficult to gauge.
Mainstream fire detectors currently used in nuclear power plants are a wired type temperature-sensing fire detector, a point type smoke-sensing fire detector, an air-breathing type smoke-sensing fire detector, a linear beam smoke-sensing fire detector, a point type infrared flame detector and the like, and the products are mature relatively and are widely used in civil places. However, the areas such as the 20m area of the nuclear island plant and the KAC overhaul hall belong to high and large space areas (the high and large space areas generally refer to clear spaces (heights) larger than 12m), the internal environment and structure of the areas are complex, the areas are influenced by the detection distance limitation, the thermal barrier effect and the like of a fire detector, a fire signal cannot reach the surface of the detector quickly, and meanwhile, due to the complex environmental conditions such as high temperature, damp and hot, gas vapor, corrosion, radiation and the like, the traditional fire detector is prone to the situations of false alarm, missing alarm, high failure rate and the like. Therefore, the fire detection technology and products adopted in the places need to be further optimized, and the reliability of the nuclear power station fire detection alarm product is improved.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the present invention provides a multispectral image type fire detector, which effectively reduces the false alarm rate and the false alarm rate of fire detection in the operation process of a nuclear power station.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multispectral image type fire detector comprises an upper cover, a main body and an interface, wherein the main body comprises a detection assembly and a function expansion board, and the detection assembly is in signal connection and electric connection with the function expansion board;
the detection assembly comprises a panel, a light supplementing lamp panel arranged on the panel,
The high-definition color module is used for acquiring images or videos and network transmission of the images or videos;
the thermal imaging module is used for detecting and sensing the flame and temperature change of the fire to form a thermal imaging image;
the photosensitive module is used for sensing the change of light;
the function expansion board is provided with a power supply system,
The micro-processing system is used for processing data interaction between the thermal imaging module and the high-definition color module;
the network transmission system is used for network video data transmission and network custom protocol data transmission of the thermal imaging module and the high-definition color module;
the switching value system is used for outputting the action of the fire alarm relay and the action of the fault relay and controlling the equipment to reset;
and the light supplement module is used for controlling the on and off of the light supplement lamp according to the sensing result of the photosensitive module.
According to some preferred implementation aspects of the invention, the micro-processing system comprises a HI3516D V300 chip and a processor, wherein the HI3516D V300 chip is used for acquiring thermal imaging images and images or videos, coordinating processor work, judging object identification logic, pushing image or video codecs and controlling interfaces; the processor is used for identifying targets of smoke and fire in the image or the video, identifying targets of temperature, smoke and fire in the thermal imaging image and pushing an identification result to the HI3516D V300 chip. The processor may be an AI artificial intelligence processor.
According to some preferred implementation aspects of the invention, the power supply system uses an external DC24V power supply input for the detector to operate, the external DC24V power supply input is firstly converted into a DC12V heat supply imaging module, a high-definition color module, a light supplement module and a switching value module for output; secondly, the DC12V is converted into DC5V for the input of the switching value module; and finally converted DC3.3V by DC12V for use by the microprocessor system and network transmission system.
According to some preferred implementation aspects of the invention, the photosensitive module comprises a photosensitive sensor, the photosensitive sensor is used for sensing light changes and transmitting sensing results to the micro-processing system, and the micro-processing system controls the supplementary lighting lamp to work and controls the high-definition color module to switch to the IR-CUT mode according to the light sensing results.
According to some preferred aspects of the invention, the high definition color module comprises a high definition color module lens penetrating the panel and facing an outer side of the panel.
According to some preferred aspect of the invention, the thermal imaging module comprises a thermal imaging module lens extending through the panel and towards an outer side of the panel.
According to some preferred implementation aspects of the invention, the fill light panel comprises one, two or more fill light lamps.
According to some preferred embodiments of the present invention, the panel is mounted with an indicator lamp for displaying different states of the multispectral image type fire detector.
According to some preferred embodiments of the present invention, the interface includes one or more of a power interface, a fire alarm interface, a fault interface, a reset interface, an indicator light interface, a fill light interface, an IR-CUT interface, a serial interface, and a network interface.
According to some preferred embodiments of the present invention, a mounting base plate is provided in the main body, the panel is mounted on the mounting base plate and is disposed vertically to the mounting base plate, and the function expansion board is mounted on the mounting base plate.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the beneficial effects that: the multispectral image type fire detector provided by the invention mainly analyzes the characteristics of fire occurrence in a nuclear power station site, and based on the advantages of image analysis technologies such as high-definition video or image and infrared thermal imaging, the multispectral image type fire detector is invented to improve the early fire detection response capability of the nuclear power station, reduce the false alarm rate and the false alarm rate of fire detection in the operation process of the nuclear power station, and better enable the nuclear power station to operate in a safe environment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a side view of a multi-spectral image-based fire detector in accordance with a preferred embodiment of the present invention;
FIG. 2 is a front view of a multi-spectral image type fire detector in accordance with a preferred embodiment of the present invention;
FIG. 3 is a perspective view of a panel and a function expansion board in the multi-spectral image type fire detector according to the preferred embodiment of the present invention;
FIG. 4 is a system architecture diagram of a multi-spectral image type in a preferred embodiment of the present invention;
fig. 5 is a schematic diagram of a power supply system in the multispectral image type according to a preferred embodiment of the present invention.
In the drawings, 1: detector upper cover, 2: probe body, 3: detector wiring port, 4: three color indicator lights, 5: photosensitivity, 6: light filling lamp, 7: thermal imaging module camera lens, 8: colored module camera lens of high definition, 9: thermal imaging module, 10: high-definition color module, 11: panel, 12: light filling lamp plate, 13: detection assembly, 14: panel fixing hole, 15: mounting base plate, 16: mounting base plate fixing hole, 17: function expansion board, 18: function control panel fixed orifices, 19: power supply system, 20: micro-processing system, 21: network transmission system, 22: switching value module, 23: and a light supplement module.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the multispectral image type fire detector of this embodiment structurally includes an upper cover, a main body, and a tail end interface, wherein an installation bottom plate is disposed in the main body, a detection component is vertically disposed at the front end of the installation bottom plate, a function expansion board is fixed on the installation bottom plate, the detection component is in signal connection and electrical connection with the function expansion board through a data line, and the function expansion board is used for achieving functions such as resetting, a fault output function, a fire alarm output function, network communication, light supplement lamp driving, and a power supply conversion circuit.
The detection assembly comprises a panel and a light supplementing lamp plate, a high-definition color module, a thermal imaging module, a photosensitive module and an indicator lamp, wherein the light supplementing lamp plate, the high-definition color module, the thermal imaging module, the photosensitive module and the indicator lamp are arranged on the panel. The upper portion position of panel is provided with the pilot lamp in this embodiment, and high definition color module and thermal imaging module set up the both sides in the pilot lamp below respectively, and high definition color module camera lens and thermal imaging module camera lens run through the outside of panel towards the panel. The lower part position of panel is provided with the light filling lamp, is provided with light sensitive element between light filling lamp and high definition color module camera lens and the thermal imaging module camera lens. The following is a detailed description of the various components on the panel:
1.1 indicator light
The common anode 5mm diameter indicator lamp is fixed on the panel and connected with the function expansion board through a data line, and the system expresses the working state in different working states through the indicator lamp mode according to the preset logic program. The indicating lamp comprises indicating lamps with three colors, the indicating lamps are used for displaying different states of the multispectral image type fire detector, the green light represents that the equipment normally operates, the red light represents that a fire alarm signal appears, and the yellow light represents that the equipment fails.
1.2 light supplementing lamp panel
The light supplementing lamp panel in the embodiment comprises two high-power LED light supplementing lamps and corresponding control circuits. The light filling lamp passes through photosensitive module perception light and controls opening and closing of light filling lamp afterwards, plays the effect of supplementary environment illuminance.
1.3 thermal imaging module
The system is mainly used for detecting and sensing the change of fire flame and temperature, and achieves the functions of fire detection, fire identification, fire alarm, video OSD superposition, video coding, video network transmission and the like.
In the embodiment, the 8-14um infrared signals and the temperature information are converted into digital signals, and the digital signals are transmitted to the HI3516D V300 core board through the data lines to be subjected to coding and decoding and image processing.
1.4 high-definition color module
The method is mainly used for video network transmission. The high-definition color module switches the IR-CUT function and is mainly controlled by sensing light rays through the photosensitive module.
The high-definition color module in this embodiment includes (5) an IMX323 color module, which is configured to convert visible light image signals into digital signals and transmit the digital signals to a micro-processing system via a data line for encoding, decoding, image processing, and transmission.
1.5 photosensitive module
The photosensitive module is used for perceiving the intensity of light to control light filling lamp work and control high definition color module switch IR-CUT function.
The function expansion board in this embodiment is provided with a power supply system, a micro-processing system, a network transmission system, a switching value system, and a light supplement module. The following describes each component of the function expansion board in detail:
2.1 Power supply System
As shown in fig. 5, the power supply system in this embodiment uses an external DC24V power input for the detector device to operate. The external DC24V power input is firstly converted into DC12V for outputting and using the heat supply imaging module, the high-definition color module, the light supplement module and the switching value module, and the DC12V power indicator lamp is lightened; secondly, converting the DC12V into DC5V for input of a switching value module; finally converted to DC3.3V by DC12V for use by the microprocessor and network transmission system and DC3.3V power indicator lights.
2.2 micro-processing System
The micro-processing system processes data interaction between the thermal imaging module and the high-definition color module through the serial port; the data of the thermal imaging module is acquired through the serial port to control the output of the switching value module and the display of the indicator light; and the equipment is controlled to reset by collecting the input of the switching value module.
The micro-processing system in the embodiment comprises an HI3516D V300 chip and a processor, wherein the HI 3516V 3516D V300 chip is used for acquiring infrared images and color images, coordinating the work of the processor, judging object identification logic, pushing image codes and decodes, and realizing control over peripheral interfaces. The processor can be a common commercially available AI artificial intelligence processor which is used for assisting the HI3516D V300 image processing algorithm to use, realizes the identification of color image smoke and fire targets through artificial intelligence, realizes the identification of temperature, smoke and fire targets of infrared thermal imaging images, and pushes the identification result to an HI3516D V300 chip.
2.3 network Transmission System
The network switch is used as a carrier to realize the network video data transmission and the network custom protocol data transmission of the thermal imaging module and the high-definition color module.
2.4 switching value module
The micro-processing system acquires data of the thermal imaging module through the serial port to control the switching value module to output the action of the fire alarm relay and the action of the fault relay; and the equipment is controlled to reset by acquiring a reset signal input by the switching value module.
2.5 light supplement module
The light supplementing lamp is controlled to be turned on and off by sensing the day and the night through the photosensitive sensor on the panel of the detection assembly.
The interface in this embodiment integrates a power supply interface, a fire alarm interface, a fault interface, a reset interface, an indicator light interface, a fill light interface, an IR-CUT interface, a serial interface, a network interface, and the like. Each interface is described in detail below:
3.1DC24V interface
For external DC24V power input.
3.2 fire alarm interface
The data of the thermal imaging module is acquired through the serial port to control the switching value module to output the action of the fire alarm relay. If the equipment alarms, the fire alarm relay is closed, and the fire alarm interface is switched on; if the equipment is normal, the fire alarm relay is disconnected, and the fire alarm interface is disconnected.
3.3 Fault interface
And the data of the thermal imaging module is acquired through the serial port to control the switching value module to output the action of the fault relay. If the equipment reports a fault, the fault relay is disconnected, and the fault interface is disconnected; if the equipment is normal, the fault relay is closed, and the fault interface is conducted.
3.4 reset interface
And the equipment is controlled to reset by acquiring a reset signal input by the switching value module. If the equipment reports a fire alarm, the composite interface is conducted, and the equipment eliminates the fire alarm; if the equipment reports a fault, the composite interface is conducted, and the equipment eliminates the fault; if the equipment reports fire alarm and faults, the composite interface is conducted, and the equipment eliminates the fire alarm and the faults; if the equipment is normal, the composite interface is conducted, and the equipment is still normal.
3.5 indicator light interface
The micro-processing system obtains the data of the thermal imaging module through the serial port to control the display interface of the indicator light. The green and normally bright represents that the equipment runs normally; the red color is normally bright and represents that a fire alarm signal appears in the equipment; the yellow color is normally bright and indicates a fault signal.
3.6 light supplement lamp interface
The light of the panel of the detection assembly is sensitive to light and night to control the light supplement module to work, so that a light supplement signal is output to the light supplement lamp interface. In the daytime, the light supplement lamp is turned off; and at night, the light supplement lamp is turned on.
3.7IR-CUT interface
Sensing day and night through the light sensitivity of the panel of the detection assembly, and outputting an IR-CUT signal to an IR-CUT interface. In the daytime, the IR-CUT is closed, and the high-definition color module video displays color video; and at night, the IR-CUT is opened, and the high-definition color module video displays black and white videos.
3.8DC12V interface
The heating imaging module and the high-definition color module operate.
3.9 Serial interface
Processing data interaction between the thermal imaging module and the high-definition color module; the data of the thermal imaging module is obtained to control the switching value module and the serial port interface displayed by the indicator lamp.
3.10 network port interface
And the network port interface realizes the network video data transmission of the thermal imaging module and the high-definition color module and the network custom protocol data transmission.
The following takes an example of a fire occurring at night, and briefly describes the specific engineering process of the multispectral image type fire detector in the embodiment during fire detection:
multispectral image type fire detector can open the light filling lamp according to photosensitive module's perception automatically when night work, when the internal conflagration breaks out at night in nuclear power plant, infrared thermal imaging module detects the source of a fire, through the video image technique, the panel warning pilot lamp is lighted through the function expansion board after the change of perception fire flame and temperature passes through ethernet video transmission and serial ports communication, under the control of controller, connect certain network protocol to convey the network by the network service module, the controller receives alarm signal and outwards sends alarm signal, the supplementary monitoring incident process of high definition color module as video monitoring is convenient for the user to look over.
The detection assembly in the multispectral image type fire detector comprises a panel, a light supplement lamp panel, a thermal imaging module and a high-definition color module, wherein the thermal imaging module and the high-definition color module are installed through screws and studs, and fixing holes are formed in the bottom of the panel; the periphery of the surface of the bottom and the middle part of the front end of the mounting bottom plate is respectively provided with a fixing hole; the periphery of the function expansion board is provided with a fixing hole. The detection assembly is fixedly installed through a screw stud through a panel bottom fixing hole and a mounting bottom plate front end bottom fixing hole; the peripheral fixing holes on the surface of the middle part of the mounting bottom plate and the peripheral fixing holes of the function expansion plate are fixedly mounted through screws and studs.
Multispectral image type fire detector in this application uses infrared thermal imaging module as main hardware platform carrier, through the video image technique, and the change of perception conflagration flame and temperature reaches and lights panel warning pilot lamp through the function expansion board after events such as fire detection, fire identification, fire alarm. Through Ethernet video transmission and serial communication, under the control of the controller, the network service module is connected with a certain network protocol and transmits the network protocol to the network, and the controller receives the alarm signal and sends the alarm signal to the outside.
The multispectral image type fire detector is applied to a nuclear power station by adopting an infrared thermal imaging detection technology, and has the advantages of being capable of completing the work which cannot be completed by a linear temperature-sensing fire detector, a point-type smoke-sensing fire detector, an air-breathing smoke-sensing fire detector, a linear light beam smoke-sensing fire detector, a point-type infrared flame detector, an image type fire detector and the like. Such as: the intelligent video monitoring under all-weather, severe weather and complex environmental conditions can be really realized; the intelligent video monitoring and identification can be carried out on the disguised and concealed targets; the intelligent video monitoring and identification of the fire can be carried out. The temperature of the closed environment and the illumination intensity inside the nuclear island plant and the KAC overhaul hall also provides a suitable application environment for the image detection technology, greatly reduces the false alarm rate of image detection caused by intensive personnel flow or frequent illumination change, solves the problems of false alarm, missing alarm and the like of the traditional fire detection system in the nuclear power station in the environment, and provides powerful guarantee for the fire safety of the nuclear power station.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A multispectral image type fire detector comprises an upper cover, a main body and an interface, and is characterized in that the main body comprises a detection component and a function expansion board, wherein the detection component is in signal connection and electric connection with the function expansion board;
the detection assembly comprises a panel, a light supplementing lamp panel arranged on the panel,
The high-definition color module is used for acquiring images or videos and network transmission of the images or videos;
the thermal imaging module is used for detecting and sensing the flame and temperature change of the fire to form a thermal imaging image;
the photosensitive module is used for sensing the change of light;
the function expansion board is provided with a power supply system,
The micro-processing system is used for processing data interaction between the thermal imaging module and the high-definition color module;
the network transmission system is used for network video data transmission and network custom protocol data transmission of the thermal imaging module and the high-definition color module;
the switching value system is used for outputting the action of the fire alarm relay and the action of the fault relay and controlling the equipment to reset;
and the light supplement module is used for controlling the on and off of the light supplement lamp according to the sensing result of the photosensitive module.
2. The multispectral image-based fire detector of claim 1, wherein the microprocessor system comprises a chip and a processor, the chip is used for acquiring thermal imaging images and images or videos, coordinating processor work, judging object identification logic, pushing image or video codecs and controlling interfaces; the processor is used for identifying the targets of smoke and fire in the image or the video, identifying the targets of temperature, smoke and fire in the thermal imaging image and pushing the identification result to the chip.
3. The multi-spectral image type fire detector according to claim 1, wherein the power supply system uses an external DC24V power input for detector operation, the external DC24V power input is first converted into a DC12V heat supply imaging module, a high definition color module, a light supplement module, and a switching value module output for use; secondly, converting the DC12V into DC5V for input of a switching value module; and finally converted DC3.3V by DC12V for use by the microprocessor system and network transmission system.
4. The fire detector according to claim 1, wherein the photosensitive module comprises a photosensitive sensor, the photosensitive sensor is used for sensing the change of light and transmitting the sensing result to the microprocessor system, and the microprocessor system controls the fill light to operate and controls the high-definition color module to switch to the IR-CUT mode according to the light sensing result.
5. The multispectral image-based fire detector of claim 1, wherein the high-definition color module comprises a high-definition color module lens that extends through the panel and towards an outer side of the panel.
6. The multispectral image-based fire detector of claim 1, wherein the thermal imaging module comprises a thermal imaging module lens that extends through the panel and towards an outer side of the panel.
7. The multispectral image-based fire detector of claim 1, wherein the fill light panel comprises one, two or more fill lights.
8. The fire detector according to claim 1, wherein an indicator lamp is installed on the panel to indicate different states of the fire detector.
9. The multi-spectral image type fire detector according to claim 1, wherein the interface comprises one or more of a power interface, a fire alarm interface, a fault interface, a reset interface, an indicator light interface, a fill light interface, an IR-CUT interface, a serial interface, and a network interface.
10. The fire detector according to claim 1, wherein a mounting base plate is provided in the main body, the panel is mounted on the mounting base plate and is disposed vertically to the mounting base plate, and the function expansion board is mounted on the mounting base plate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113092331A (en) * | 2021-05-10 | 2021-07-09 | 中科永安(六安)科技有限公司 | Composite smoke detector based on image recognition and multi-path laser correlation |
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