1143 results about "Fire suppression system" patented technology

The invention relates to the technical field of communication machine room safety protection, and discloses a communication machine room intelligent fire monitoring and fire extinguishing system based on edge computing, which comprises a fire parameter acquisition module, a temperature characteristic analysis module, a smoke dynamic detection module, a multi-source fusion judgment module, a regulation and control parameter generation module and the like. The fire parameter acquisition module acquires parameters such as temperature gradient, smoke concentration and equipment current, judges fire risk and triggers cooperative monitoring; the temperature characteristic analysis module extracts temperature distribution characteristics and quantitatively evaluates hot spot abnormity; the smoke dynamic detection module analyzes the smoke diffusion trend; the multi-source fusion judgment module is combined with multiple parameters to generate a fire extinguishing or optimizing signal; and the regulation and control parameter generation module is matched with the strategy to generate injection and ventilation parameters. The system also corrects a risk index through an equipment coupling analysis module, and forms closed-loop control by using a dynamic feedback execution module. According to the system, multi-source data fusion monitoring and intelligent fire extinguishing are realized, and the fire prevention and control accuracy of the communication machine room is improved.

A fire suppression system includes an interface control module, and an interface module. The interface control module can activate a fire suppressant discharge system in response to receiving a fire detection signal. The interface module is connected with the interface control module and is connected with at least one of a first optical sensor and an interface expansion module. The interface expansion module is configured to connect with a second optical sensor. The first optical sensor and the second optical sensor are configured to detect a fire condition at an area of interest and provide the first detection signal to the interface control module in response to detecting the fire. The interface module includes light emitting devices corresponding to the first optical sensor and the interface expansion module, the light emitting devices configured to display different colors indicating a status of the first optical sensor and the interface expansion module.

According to the power battery prevention and control fire extinguishing system and method, a detector assembly is additionally arranged in a battery box, and an oxygen concentration and humidity sensor, a second one-way throttling assembly and an exhaust electromagnetic valve are arranged on an exhaust pipeline. And the inert gas prevention and control unit is used for introducing high-purity inert gas into the battery box, so that a positive pressure environment in the battery box is kept, external air is prevented from entering the battery box, and a flame-retardant effect is achieved. When thermal runaway occurs in the battery box, a fire extinguishing agent is injected into the battery box through the fire extinguishing unit, the temperature in the battery box is reduced, and the chain reaction of the battery due to too high temperature in the thermal runaway process is prevented. The main control unit can control opening and closing of the electromagnetic valves according to signals of the sensors. Under normal conditions, the main control unit controls the inert gas prevention and control unit to work, and the fire extinguishing unit performs monitoring. When it is monitored that the temperature in the battery box is too high or smoke exists, the main control unit controls the fire extinguishing unit to start working, and the reliability and feasibility of system prevention and control fire extinguishing can be effectively improved.

The invention belongs to the technical field of anti-explosion electric cabinets, and particularly discloses an anti-explosion electric cabinet for new energy supply, which comprises an anti-explosion electric cabinet and an active cooling and fire extinguishing system, and is characterized in that the active cooling and fire extinguishing system comprises a centralized cooling and fire extinguishing unit, a confluence controller, a control module, a plurality of pressure pipelines and a plurality of temperature feedback devices; a plurality of working parts in the explosion-proof electric cabinet are respectively provided with a monitoring unit; the explosion-proof electric cabinet has the advantages that the monitoring unit is arranged in the explosion-proof electric cabinet, real-time monitoring of the environment of the electric cabinet is achieved, and especially under the abnormal conditions of high temperature and the like, the active cooling and fire extinguishing system can rapidly respond, automatically increase the spraying amount of the fire extinguishing material and improve the fire extinguishing effect. The system integrates a passive pressure relief structure, an active explosion venting system, an inerting explosion suppression system and automatic water mist spraying, multi-level safety protection is provided, and safety and stability of electric power distribution facilities, especially an electric cabinet and a distribution box in a new energy grid-connected system in a complex environment are ensured.

The disclosure is directed to a fire suppression system that includes all control components in a single integrated panel. It further contemplates and may include a chamber configured to maintain an interior inert atmosphere and to enclose and establish a nonflammable workspace for a pyrophoric workpiece. A temperature sensor may also be included and mounted proximate the workspace, along with an oxygen concentration sensor configured to detect an interior oxygen concentration of the atmosphere. The system also includes a dispenser configured to discharge an antipyrophoric granular material onto the workpiece responsive to automatic detection proximate the workpiece of at least one of a predetermined temperature and oxygen concentration. In variations, the chamber is configured as a glove box having viewing windows and a plurality of sealed glove ports positioned to enable user manipulation of the workpiece about the workspace.

The invention discloses an intelligent low-altitude unmanned aerial vehicle cluster air-ground cooperative detection fire extinguishing system and method, a patrol plan is made by determining the patrol time interval of a patrol area of an unmanned aerial vehicle and the density of patrol routes, the system can dynamically adapt to the change of seasons and human activities, and the system and method are more accurate and more efficient. Fire missing detection can be effectively avoided; identifying a fire source by adopting a multi-source data fusion technology, determining whether the fire source exists in the forest region through the infrared image and the actual image of the forest region, and determining the intensity and the position of the fire source according to the smoke concentration when determining that the fire source exists in the forest region. The problem that the accuracy of infrared thermal imaging is affected and the detection precision is low due to the temperature difference of different vegetation, the change of the sunlight irradiation angle, water vapor in the atmosphere and the like can be solved. The fire trend prediction module and the fire extinguishing scheme generation module are adopted to automatically realize fire extinguishing of the forest area, the prediction result is efficient and accurate, and missing of the optimal fire extinguishing opportunity can be avoided.

A fire detection and warning system includes a kitchen exhaust hood connected to an exhaust fan configured to ventilate convective heat and cooking fumes released by one or more cooking appliances installed under the kitchen exhaust hood, the kitchen exhaust hood having a plenum. A fire suppression system is operatively connected to the hood and positioned above the one or more cooking appliances and configured to be triggered by one or more fusible links with a predefined melting temperature. At least one temperature sensor is installed inside the plenum of the kitchen exhaust hood and provides temperature measurements to a control module. The control module is configured to generate a fire warning signal in response to a fume temperature reaching a predefined temperature threshold Tset for a predefined period of time Tdur, where Tset and the time Tdur are selected based on a melting temperature rating the fusible links.

The invention relates to a gas-water curtain partition type tunnel smoke control system and method, and belongs to the field of tunnel fire prevention and control, the gas-water curtain partition type tunnel smoke control system comprises a tunnel, smoke control partitions, a tunnel fire extinguishing system, a gas curtain generation system, a water curtain generation system and a fire detection alarm, the gas curtain generation system comprises a gas curtain generation tail end, and the water curtain generation system comprises a water curtain generation tail end. The tunnel is divided into a plurality of smoke control subareas by the air curtain generation tail end and / or the water curtain generation tail end. A plurality of air curtains and water curtains can be formed at the boundaries of the two sides of the smoke control subareas, at the moment, smoke generated by a fire source can be isolated into the smoke control subareas, the smoke can be continuously eliminated under the internal circulation purification effect of the tunnel fire extinguishing system, meanwhile, the tunnel fire extinguishing system can automatically restrain fire spreading, and therefore the smoke spreading path is thoroughly blocked.

The invention relates to the technical field of fire alarm and fire extinguishing, and discloses a zero-false-alarm automatic fire alarm and fire extinguishing system based on multi-condition judgment, and the system comprises a data collection module which is used for obtaining environment monitoring data and image data; the image analysis module is used for outputting image fire confidence by adopting a pre-trained model; the information fusion judgment module is used for calculating a single fire confidence coefficient of each monitoring parameter and fusing the single fire confidence coefficient to obtain a comprehensive fire confidence coefficient; the trial spraying dynamic verification module is used for controlling a fire extinguishing agent to perform trial spraying, establishing a sensor prediction model, outputting predicted environment monitoring data and outputting a verification passing result; the self-adaptive dosage control module is used for calculating the heat release amount through a temperature rise-volume energy balance method and further calculating the main fire extinguishing dosage; and the fire extinguishing execution module is used for implementing main spraying fire extinguishing, calculating a residual fire index and triggering supplementary spraying when the residual fire index reaches a threshold value. According to the invention, the intelligence and reliability of the fire alarm and fire extinguishing system are improved.

The invention relates to the technical field of industrial safety, in particular to an intelligent machine tool fire extinguishing system which comprises a fire detection module, a data processing module, a fire type recognition module, a fire extinguishing control module, a man-machine interaction module and a power failure guarantee module. Wherein the fire detection module is used for monitoring multi-dimensional data of a working environment of a machine tool in real time; the data processing module is used for identifying different types of fire features; the fire type identification module is used for identifying the specific type of the fire; the fire extinguishing control module automatically selects a corresponding fire extinguishing medium; the man-machine interaction module is used for sending an alarm signal to an operator when a fire disaster occurs; and the power-off guarantee module is used for automatically cutting off a machine tool power supply when a fire occurs. According to the invention, through the technologies of intelligent fire identification, accurate fire source positioning and timely power cut-off, the fire extinguishing efficiency is effectively improved, early fire control is ensured, and secondary disasters are prevented.

A retrofitted bus featuring a progressive floor elevation system that gradually increases the height of modular flooring sections from front to rear, creating additional underfloor storage space and improving passenger visibility. The bus incorporates elevated passenger seating assemblies with rigid support structures and adjustable footrests for enhanced comfort and accessibility. The retrofitted stowage space may include insulation, climate control, and video monitoring systems. An engine safety cover, constructed from fire-resistant, thermally insulating, and structurally reinforced materials, integrates an extinguishing system for fire suppression. A swing-down egress mechanism at the rear of the bus serves as a structural component during normal operation and converts to an evacuation slide or stairs during emergencies.

A method of using a fire suppression system includes maintaining an inert atmosphere in a chamber; enclosing a pyrophoric workpiece in the chamber; sensing a chamber temperature within the chamber with a temperature sensor; sensing a chamber oxygen concentration within the chamber with an oxygen sensor; comparing the chamber temperature to a predetermined temperature and comparing the chamber oxygen concentration to a predetermined oxygen concentration; dispensing an antipyrophoric material onto the workpiece within the chamber if the chamber temperature meets or exceeds the predetermined temperature or if the chamber oxygen concentration meets or exceeds the predetermined oxygen concentration.

A retrofitted bus featuring a progressive floor elevation system that gradually increases the height of modular flooring sections from front to rear, creating additional underfloor storage space and improving passenger visibility. The bus incorporates elevated passenger seating assemblies with rigid support structures and adjustable footrests for enhanced comfort and accessibility. The retrofitted stowage space may include insulation, climate control, and video monitoring systems. An engine safety cover, constructed from fire-resistant, thermally insulating, and structurally reinforced materials, integrates an extinguishing system for fire suppression. A swing-down egress mechanism at the rear of the bus serves as a structural component during normal operation and converts to an evacuation slide or stairs during emergencies.

In an open-loop heat removal system for a building such as a data center or a home, cool air is supplied to the building by a chilling unit and hot air is expelled from the building without recycling, recirculating, or re-cooling the hot air. For fire suppression, the system receives temperature reading(s) from temperature sensor(s) and determines whether any temperature reading reaches or exceeds a temperature that indicates presence of a fire. If so, a louver positioned over an inlet module is automatically or programmatically closed, shutting off air supply to the building. The system determines whether the building is under a negative pressure internally. If not, an exhaust fan at the outlet of the building is turned on to create a negative pressure internally. The system determines whether an oxygen level of the building indicates that the fire has been contained. If not, a sprinkler system is activated.

The invention relates to the field of liquefied natural gas, in particular to a liquefied natural gas double-layer tank liquid nitrogen circulation cooling and fire extinguishing system and method. The system comprises a double-layer tank body, a liquid nitrogen cooling and fire extinguishing assembly and a liquid nitrogen collecting and circulating assembly, the double-layer tank body comprises an inner tank body and an outer tank body, the inner tank body is located in the outer tank body and provided with a temperature sensor, and a plurality of superconducting magnetic suspension supporting modules are arranged between the outer tank body and the inner tank body; the liquid nitrogen cooling and fire extinguishing assembly comprises a liquid nitrogen storage tank and a liquid nitrogen circulating main pipe, the liquid nitrogen circulating main pipe communicates with the liquid nitrogen storage tank and is spirally wound on the peripheral wall of the inner tank body, and a plurality of exhaust holes are formed in the part, located in the cavity, of the liquid nitrogen circulating main pipe in the extending direction; the liquid nitrogen collecting and circulating assembly comprises a loop pipe, a liquid nitrogen collecting tank and a circulating pipe, the loop pipe communicates with the cavity and the liquid nitrogen collecting tank and is further connected with an air suction pump and a cooling and pressurizing device in series, and the circulating pipe communicates with the liquid nitrogen collecting tank. The inner tank body can be rapidly and comprehensively cooled, and a fire can be rapidly extinguished when the fire occurs.

The present system provides an integrated fire suppression system that enables use of hybrid media fire-extinguishing systems and methods, and which includes all components in a single integrated control panel and cabinet, other than system piping to nozzles or emitters. The system enables the entire panel and cabinet to be inspected and analyzed, and installed, repaired, or maintained in a single operation, dramatically reducing time spent on site and reducing the qualifying process as well. The assembly of the panel is off-site, typically under the inspection of any qualifying agencies. Once assembled, the system can remain qualified for rapid installation at any future time, allowing easy replacement of faulty panels or consumables.

The utility model discloses a prefabricated cabin type lithium battery automatic fire extinguishing test device, and relates to the technical field of lithium batteries. Comprising a prefabricated cabin body, a bottom plate is arranged in the middle of the prefabricated cabin body, a fire extinguishing agent storage tank is arranged on the bottom plate and connected with a pressure monitoring device, a displayer and a fire extinguishing controller are connected to the upper portion of the bottom plate and arranged on the two sides of the pressure monitoring device respectively, and sensors are symmetrically installed at the top end of the cabin wall of the prefabricated cabin body. The fire extinguishing agent storage tank is connected to all the battery modules through the pipe network system, so that the fire extinguishing agent can directly act on a fire source, the fire extinguishing agent can quickly and uniformly cover all the battery modules when a fire occurs, and the fire behavior is effectively controlled; by integrating the fire extinguishing system and the control system, the battery state can be monitored in real time, a fire extinguishing program is automatically triggered when abnormality is detected, and the safety and accuracy of the test process are ensured.

A method for testing a tunnel fire suppression system in the form of a water deluge system having a wet side and a dry side separated by a valve, includes the step of providing a nozzle arrangement comprising a plurality of nozzles, with each nozzle disposed in or coupled to an outlet of the water deluge system. The nozzle arrangement comprises, is coupled to or operatively associated with a sensor arrangement configured to measure the pressure of air at each of the plurality of outlets of the water deluge system and output one or more output signals indicative of the pressure of the air at the one or more outlets. The method includes providing a supply of pressurised air through the water deluge system using a blower coupled to the water deluge system. The method further includes measuring the pressure of the air at the one or more outlets of the water deluge system and outputting an output signal indicative of the pressure of the air at the one or more outlets, and conveying the output signal to a processing system configured to determine from said one or more output signals the flow rate of the air supply at the one or more outlets.

The invention discloses a fire isolation device for an automobile charging station, which is characterized in that a fire monitoring device and an alarm device are arranged on a shed and are connected with a control terminal; the parking space bottom plates are transversely arranged on the shed base at intervals; lifting fireproof plates are arranged on the two longitudinal sides of the parking space bottom plate. A movable fireproof plate is arranged above the parking space bottom plate, the two transverse sides of the parking space bottom plate are movably shielded, and the movable fireproof plate is transversely and movably arranged on the shed base and is moved to the positions above the different parking space bottom plates for transverse and top shielding; lifting spraying rods are respectively arranged at four corners of the parking space bottom plate; the lifting fireproof plates, the movable fireproof plates and the lifting spraying rods are driven by the control terminal to work. When the electric automobile is on fire, the automobile can be isolated from the surrounding environment, oxygen entering can be reduced, and surrounding vehicles and people can be effectively protected against influences; by arranging the intelligent lifting spraying rods surrounding the parking space, the fire extinguishing system can be automatically started after the vehicle catches fire.

In an open-loop heat removal system for a building such as a data center or a home, cool air is supplied to the building by a chilling unit and hot air is expelled from the building without recycling, recirculating, or re-cooling the hot air. For fire suppression, the system receives temperature reading(s) from temperature sensor(s) and determines whether any temperature reading reaches or exceeds a temperature that indicates presence of a fire. If so, a louver positioned over an inlet module is automatically or programmatically closed, shutting off air supply to the building. The system determines whether the building is under a negative pressure internally. If not, an exhaust fan at the outlet of the building is turned on to create a negative pressure internally. The system determines whether an oxygen level of the building indicates that the fire has been contained. If not, a sprinkler system is activated.

The invention provides an efficient cooling and fire extinguishing agent control method for an energy storage system fire, and relates to the field of fire extinguishing and cooling. Determining a cooling delay coefficient of the energy storage system during cooling control according to the dynamic temperature data; then the spraying adaptive amount during fire extinguishing spraying is determined through the spraying node; according to the target cooling strategy and the cooling delay coefficient, the distribution loss amount of each level of fire extinguishing agent under the fire extinguishing temperature control working condition is determined, and the cooling compensation characteristics of the automatic fire extinguishing system with the detection and alarm linkage during fire extinguishing task execution are determined according to the distribution loss amount; and determining a fire extinguishing cooperation efficiency index when the energy storage system carries out efficient cooling and fire extinguishing control by a fire extinguishing agent according to the spraying adaptation amount and the cooling compensation characteristics, and carrying out distribution control on a fire occurring in the energy storage system according to the fire extinguishing cooperation efficiency index. According to the invention, dynamic joint control adjustment can be carried out when the fire extinguishing strategy and resource allocation adjustment are delayed, so that the response efficiency of the fire extinguishing system is improved.

Provided is a battery module and battery rack having enhanced fire safety features. The battery module includes a swelling / pressure sensor that detects swelling of a battery cell. An output signal of the sensor is used to halt operation of a battery rack / battery system containing the battery module and prevent charging and discharging of the battery module. In an embodiment, the battery module uses an AC-to-AC power supply to provide AC frequency power for balancing battery cells of the battery module. In an embodiment, the battery rack includes an internal water fire suppression system that provides battery cooling in the event of a battery cell fire to prevent the spread and / or reigniting of the fire.

The invention relates to the technical field of computer vision, and discloses a flame recognition and fire extinguishing system for indoor fire fighting, comprising: a binocular infrared imaging module for acquiring a thermal imaging image; the monocular visible light imaging module is used for acquiring a visible light image; the infrared stereoscopic vision module is used for carrying out processing and feature extraction on the thermal imaging images, carrying out feature aggregation to obtain an aggregated feature map, carrying out parallax optimization on the aggregated feature map, and carrying out calculation according to a parallax optimization result to obtain depth information of the thermal imaging images at different visual angles; the multi-mode stereoscopic vision fusion module is used for fusing the thermal imaging image with the depth information and the visible light image; the flame identification and fire behavior prediction module is used for performing flame detection according to the fused image, predicting a bounding box, confidence and a category label of the flame in the fused image, and predicting a future diffusion position of the flame, a diffusion scale of the flame and a diffusion trend of the flame; and the self-adaptive water gun spraying control module controls the water gun to execute spraying operation.

The embodiment of the utility model provides a fire extinguishing system and an automobile transport ship, and relates to the technical field of automobile carrying fireproof safety. The fire extinguishing system comprises at least two spraying devices, and the two adjacent decks are each provided with at least one spraying device; the thermal runaway vehicle located between the two adjacent decks is sprayed from the top and the bottom through the spraying device; wherein at least one spraying device is used for being installed on the movable deck, and the spraying device can move relative to the movable deck so as to adjust the spraying area, above or below the movable deck, of the spraying device, and therefore when a thermal runaway vehicle appears between the two adjacent layers of decks, spraying can be conducted on the thermal runaway vehicle from the bottom and the top at the same time; and fire extinguishing and cooling can be directly carried out on the battery pack, and generated high-temperature flue gas can be prevented from diffusing towards the surrounding.

The invention relates to the technical field of fire detection and fire extinguishing, and discloses a large-space intelligent active fire extinguishing system which comprises a sound wave imaging module used for emitting ultrasonic waves in a target space, receiving echoes, analyzing the position of a fire source and generating three-dimensional fire source positioning data; the intelligent optical fiber sensing network is deployed in each area of the space and is used for collecting temperature, pressure and humidity information in real time and sending the collected environmental parameter data to the central control system; and the central control system is in two-way communication with the sound wave imaging module and the intelligent optical fiber sensing network and receives fire source positioning data and environment monitoring data provided by the sound wave imaging module and the intelligent optical fiber sensing network. Through the multi-modal fusion scheme of the intelligent optical fiber sensing technology and the sound wave imaging technology, the high-precision real-time monitoring effect on a fire source and the environment is achieved, accurate positioning and dynamic tracking of the position of the fire source are achieved, and powerful data support is provided for fire extinguishing decision making.

The invention belongs to the technical field of fire-fighting quadruped robots, and particularly relates to a fire-fighting fire extinguishing system suitable for a quadruped robot, which comprises a quadruped robot, a double-layer mounting frame is arranged on the upper part of the quadruped robot, and an industrial personal computer, an edge computer and a voltage stabilizer are mounted on the first layer of the double-layer mounting frame; a direct-current power source, a switch, a positioning camera and a fire extinguisher are installed on the second layer of the double-layer installation frame, a supporting frame is further installed at the end of the second layer of the double-layer installation frame, a laser radar is arranged at the upper end of the supporting frame, and a binocular depth camera is installed on the side of the upper end of the supporting frame. The outlet end of the fire extinguisher is connected with a first pipeline, the end of the first pipeline penetrates through the partition plate of the double-layer mounting frame to be connected with a pressure stabilizer, and the output end of the pressure stabilizer is connected with a spray pipe. The unmanned aerial vehicle can keep excellent maneuverability and stability, can stably work in a high-temperature environment, effectively resists smoke interference, and easily deals with various complex terrains.

The self-extinguishing battery pack comprises a battery pack body and a fire extinguishing system, the battery pack body is of a multi-layer structure, a sensor, a control panel and a power-off structure are arranged in the battery pack body, and the fire extinguishing system is arranged outside the battery pack body. The fire extinguishing system has a multi-trigger mechanism and a double-cooperative fire extinguishing mechanism so as to extinguish the power supply in time when the power supply burns. The battery pack is separated by adopting a multi-layer structure, and an abnormal heating layer is accurately positioned by combining temperature and smoke sensors; the layered structure isolates the fire behavior, optimizes the space and improves the energy density; a water-based and aerosol dual fire extinguishing mechanism is adopted, aerosol is firstly released to inhibit reaction, and then the water-based is cooled to cope with thermal runaway cooperatively; the hot melting ball automatically switches pressure, and external energy is not needed; three trigger mechanisms are integrated to form a protection system, so that the emergency capability is enhanced, and the reliability at extreme high temperature is ensured; the circuit is automatically cut off to prevent diffusion when abnormity occurs; the separated design avoids interference, and the metal spring realizes power-off protection; the monitoring fault tolerance is improved through multiple sensors, and the fire extinguishing time sequence is guaranteed through pressure difference.

The utility model provides a simple automatic water spraying fire extinguishing system which comprises a water supply module, a connecting water pipe, a pressure gauge, a pressure pump assembly, a water flow indicator, a main control system, a spraying module, a smoke detector and an alarm device, and the water supply module is sequentially connected with the pressure gauge, the pressure pump assembly, the water flow indicator and the spraying module through the connecting water pipe. The water flow indicator, the smoke detector, the alarm device, the pressure pump assembly, the spraying module and the main control system are in signal connection, the water flow indicator installed on the connecting water pipe is used for detecting whether water flow impact exists in the connecting water pipe or not and sending an electric signal to the main control system, and the main control system is used for controlling the alarm device and the pressure pump assembly to operate. According to the utility model, the problem that fire rescue and escape in villages in cities and villages are difficult is solved, and the simple automatic water-spraying fire extinguishing system can also effectively control the spread of fire, so that more time is won for people to escape and rescue.

A fire suppression system for a vehicle includes a fire detection device, a tank, a nozzle, and an activator. The fire detection device is configured to detect a fire in a hazard area. The activator is configured to selectively release during a single-agent phase the fire suppressant contained in the tank such that after the first tank is substantially emptied at least a portion of the pressurized gas passes through the outlet of the nozzle and floods the hazard area.

The invention relates to the technical field of fire early warning, in particular to a fire extinguishing system based on a multi-modal sensor and a multi-stage linkage control method.The fire extinguishing system based on the multi-modal sensor comprises a multi-spectral light source module, the multi-spectral light source module is configured to emit a dual-wavelength light beam with a preset divergence angle, the first wavelength # imgabs0 # is located in the visible light wave band, and the second wavelength # imgabs1 # is located in the near-infrared wave band; a temperature gradient sensor array and a scattering angle adjustable photoelectric detector array are arranged in the composite detection cavity, the temperature gradient sensor array comprises miniature thermocouple groups which are distributed in a spatial orthogonal manner, and the photoelectric detector array comprises a multi-angle receiving unit which can slide along a spherical track; the matrix eliminates coupling interference of a temperature field on scattering characteristics of smoke particles through a dual-wavelength phase locking algorithm; according to the scheme, the dynamic coupling interference of the temperature field and the scattering characteristic can be fundamentally solved.