1704 results about "Open fire" patented technology

The invention relates to a preparation method and an application of multistage-spreading heat-dissipation fire-proof heat-insulation composite fabric. The multistage-spreading heat-dissipation fire-proof heat-insulation composite fabric is formed by successively arranging and laminating a metal foil reflection layer, a phase change temperature limitation layer, an interval composite membrane heat-insulation layer and a flame-retardant comfortable layer, wherein the metal foil reflection layer has high reflectivity and an enhanced heat-dissipation function; the phase change temperature limitation layer has functions of high energy consumption absorption and evenly-distributed heat conduction; the interval composite membrane heat-insulation layer has the functions of reflection insulation and even distribution of heat; and the flame-retardant comfortable layer has the functions of low-contact heat conduction, heat insulation and comfort. When the front side of the multistage-spreading heat-dissipation fire-proof heat-insulation composite fabric is under the action of open fire and strong heat flow environment, the back side of the multistage-spreading heat-dissipation fire-proof heat-insulation composite fabric can be kept below 50DEG C which is near the safe temperature state of the human skin, and the integral structural form and the mechanical property are stable. The natural thickness of the composite fabric is 5-15mm, the compression thickness of the composite fabric is 3-8mm, and the square meter quality of the composite fabric is 400-1500g / m<2>. The composite fabric is fire-proof heat-insulation material which is totally sealed, stuck and sewn and can be used for individual protection and environment heat insulation in special high-temperature occasions, such as fire control, military, exploration, safe escape and industry and the like.

The invention discloses a convenient heat-insulation and cooking method for outdoor picnic food and a device thereof. According to the convenient heat-insulation and cooking method disclosed by the invention, a soft heat-insulation bag with a cover, which can be folded and can also be molded by supporting, is firstly machined; a light reflection film is arranged on the inner surface of a cover body; then, a liner which is tightly adhered to the inner surface of the heat-insulation bag is also machined; a transparent film is arranged on the bottom face of the liner; and the periphery of the liner is provided with a heat-absorption shell fabric. When people prepare to travel outdoors, the food is put into the liner of the soft heat-insulation bag. and the cover body of the heat-insulation bag is closed to keep fresh; when the people have a meal, the liner is turned over, and the bottom face is upwards buckled on the food in the soft heat-insulation bag; the cover body of the heat-insulation bag is wholly opened and is bent and molded, and the rear side faces the sun to heat and cook the food. According to the convenient heat-insulation and cooking method for the outdoor picnic food and the device thereof disclosed by the invention, heating equipment and fuel do not need to be carried when the people have an outdoor picnic, the applicant is convenient, and energy sources are saved; and particularly, open fire is not used so that the method and the device are not limited by prohibitive regulations.

The invention relates to a computer vision technique based method and a system for detecting and extinguishing a fire disaster intelligently, which belong to the technical field of fire monitoring and self-extinguishing. The method comprises the following steps: (1) using a sub-station control module to perform the fire monitoring; (2) under the condition that flame exists, estimating the spatial position of the flame through a binocular parallax technique; (3) according to a fire monitor open rule, determining an opened fire water monitor; (4) obtaining the position of the tail end of an ejecting water column of the fire monitor, namely the position of a water-drop point, by using the computer vision technique or an image processing technique; (5) adjusting the fire monitor according to the relative positions of the water-drop point and the flame to achieve the closed-loop control to the fire monitor so as to perform extinguishing; and (6) determining that the extinguishing is finished according to monitored images, and then closing the fire monitor. The method and the system can achieve the real-time monitoring and the self-extinguishing of an outdoor large space fire disaster.

A double-heat-source steaming type barbecue grill comprises a base, a shell and an inner container. The bottom of the shell is arranged on the base. A heating disc is arranged at the position, close to the bottom of the shell, of the base. The inner container is arranged in the shell. A cavity is formed between the inner wall of the shell and the outer wall of the inner container. A steam pressure reducing plate is arranged between the position, above the bottom of the shell, in the cavity and the position, below the bottom of the inner container, in the cavity, a steam water tank is formed by the steam pressure reducing plate and the bottom of the shell, and steam nozzles are evenly distributed on the steam pressure reducing plate. A steam accumulated water circulating hole is formed in the middle of the steam pressure reducing plate, and a secondary heat source heat conducting oil tank is arranged at the position, in the middle of the bottom of the shell, of the steam water tank. A circulating oil pipe penetrates through the steam pressure reducing pipe and is wound around the outer wall of the inner container, and the two ends of the circulating oil pipe are connected with the secondary heat source heat conducting oil tank. According to the double-heat-source steaming type barbecue grill, it is unnecessary that open fires are used for directly baking food, double indirect heat sources are adopted for baking, and therefore the baked food contains no harmful matter, and is healthy to eat.

The invention relates to a fire monitoring method, in particular to a visible light-thermal infrared based multispectral multi-scale forest fire monitoring method which utilizes the advantages of a large-scale satellite remote sensing monitoring means and a small-scale near ground monitoring means to invent a novel monitoring method through reasonable configuration and mutual coordination of the two means. In the invention, the spectral features as well as picture pattern and textural features of forest fire points are researched, the forest fire recognition algorithms of visible light images and thermal infrared images are organically combined, and the interference and the like on forest combustion smoke and open fire recognition, which are caused by the cloud, fog, lamplight, red substances and the like of a forest district, are eliminated, so that the visible light-thermal infrared based multispectral multi-scale forest fire monitoring method by which various factor interferences can be eliminated is invented, thus a fire alarm automatic recognition function can be achieved, the manpower cost for 24-hour manual monitoring can be greatly lowered, and the accuracy of forest fire monitoring can be effectively improved.

The invention provides a tobacco for a heating non-combustion apparatus and a preparation method thereof. The tobacco is in a solid state and mainly composed of raw tobacco materials, an acidity regulator, a leavening agent, a humectant, a stabilizer / coagulant, a thickener and natural essence through mixing. The tobacco is used for heating non-combustion apparatus and can generate nicotine through heating, but generate tobacco-flavor gases containing no or few tar components after heating, so that the tobacco can facilitate use of smokers and reduce harmfulness of smoking. Different from tobacco-simulating liquid products such as 'tobacco tar', the tobacco is the real product containing raw tobacco materials, capable of generating smoke and being combusted and cracked without ignition of open fire and convenient to carry and use.

The invention discloses a light heating electronic cigarette. The light heating electronic cigarette comprises a shell, an electronic circuit board, an optical reflector and a container containing tobacco tar are arranged in the shell, the electronic circuit board is provided with a light source, and after the light emitted by the light source is focused through the optical reflector, a light gathering point for heating is formed. The light emitted by the light source is focused through the optical reflector, the light gathering point for heating the tobacco tar is formed, the electronic cigarette is clean, sanitary and small in power consumption, open fire ignition is not needed, fire disaster hazards do not exist, meanwhile, the heating speed is high, energy is saved, and environmental friendliness is achieved.

The invention discloses a remote controlled cooking robot which realizes remote operation through Internet or a mobile communication network. The cooking robot is a small-sized cooking robot which hasmultiple intelligences and can fry for family and commercial use, can be controlled by a personal computer to realize automatic cooking of various types of dishes; the flavor and the heating controlare set by programs; and various cooking programs are stored in the computer. The cooking robot comprises a mechanical structure, a control circuit and a software system. The main components comprisea stir-fry mechanical arm, a feeding mechanical arm, a rotating seasoning bin, a liquid adding device, a heating device, a refreshing chamber, a heat preservation chamber and a standard side dishes box. The feeding mechanical arm automatically recognizes solid seasoning in the rotating seasoning bin and quantitatively takes out the solid seasoning to put into a pan. The liquid adding device adds the liquid-state seasoning into the pan at regular time and in a fixed quantity. An intelligent heating device carries out controlled heating on the pan, so that oily fume and open fires do not exist,the heat energy diffusion is small, and the energy-saving and environment-protecting effects are significant.

The invention relates to a device for testing the open fire prevention and heat insulation performance of fabric, which comprises a thermal cavity, a specimen holder, a fire scene generation device, a gas source, a temperature measurement device and a data acquisition processing unit. The device generates a high-temperature high-heat flow open fire scene environment by the gas source and the fire scene generation device; a fabric specimen is placed in the environment; the temperatures of the front and back of the fabric specimen change under the function of high temperature and high heat; the temperature measurement device online measures the change of the temperatures of the front and back of the fabric specimen with exposure time in real time; and the data acquisition processing unit records the curve of the temperature change with the time in real time so as to analyze and represent the open fire prevention and heat insulation performance and temperature isolation behavior of the fabric. The device has the characteristics of high testing efficiency, stable and reliable working performance, operation repeatability, simple operation, wide application range and the like, and can be used for the test and inspection of the long-term thermal protection performance and temperature isolation behavior of the fabric in the open fire scene environment.

The present invention is directed to an apparatus for use in cooking over an open fire. Specifically, the invention discloses a tripod having a grill suspended therefrom. The tripod includes an elongate adjustment rod with a distantly situated handle. By attaching the suspension line, holding the grill to the handle, which is slidingly affixed to one leg of the tripod, the height of the grill over the fire can be changed. This arrangement allows the grill to be adjusted over the fire to accommodate the heat of the fire or to provide a preferred cooking temperature for the articles on the grill without adjusting the grill directly or having to touch the hot surfaces near the fire.

The invention relates to an intelligent video surveillance system, wherein a video input device is used to acquire video information of a surveilled scene, and a video decoding module is used to converting AV (Audio / Video) signals into digital image signals to be output to a video processing unit. The video processing unit internally comprises a plurality of functional modules including an image defogging module, a video event analysis and detection module, a video image compressed encoding module, a video input device control module, a network drive module and the like. A dark channel defogging optimization algorithm based on prior expansion of dark spots is adopted in the image defogging module, which can be used to remove haze in images in real time so as to improve the definition of a surveillance video. The video event analysis and detection module can be used to detect smoke and open fire in the surveilled scene. The network drive module supports the data communication of three networks, namely, Ethernet, WiFi (Wireless Fidelity) and 3G (The 3rd Generation Telecommunication). Accordingly, the intelligent video surveillance system is practical and intelligent in detection function, low in hardware cost, and flexible and convenient in configuration, and has important application values.

The invention discloses a network intelligent open fire detector control system which mainly comprises an open fire detector and a wireless gateway (base station) and so on. The core module group of the open fire detector comprises a central processor and a wireless module group unit and an ultraviolet flame detection system which are connected with the central processor. According to the system, the wireless module group unit performs data communication with the wireless gateway (base station), the wireless gateway (base station) is connected with a business engine, the business engine performs data interaction with a cloud side data server, and the cloud side data server is connected with multiple types of client sides through the network. With application of the system, the disadvantages that the ultraviolet flame detector has poor sensitivity and small detection distance and have no resistance to lightning interference and has certain rate of false alarm can be solved, and remote command deployment can be realized in case of emergency event so that unnecessary property loss can be reduced, and the powerful guarantee can be provided for the fire fighting force to quickly and effectively handle various fire accidents.

A flame-retardant and fireproof cigarette which aims to contain the combustion process to the cigarette. The flame-retardant and fireproof cigarette has a filter that is aligned with a tobacco body. A flame-retardant and fireproof covering is positioned over at least a portion of the tobacco body and isolates the open fire associated with the consumption of the tobacco during the course of smoking or burning the cigarettes. Such a cigarette reduces the risk of undesired, inadvertent, and latent ignition of adjacent materials.

The embodiment of the invention discloses a control method and system for the forest fire exploration through an unmanned plane. The method comprises the steps: obtaining a fusion image and the brightness temperature values of all pixels in the fusion image through the preprocessing, splicing and fusion and brightness temperature inversion of a visible image, a short-wave infrared image, a mid-wave infrared image and a long-wave infrared image; recognizing the position of an open fire point and the position of a blind fire point according to the fusion image and the brightness temperature values of all pixels in the fusion image; finally analyzing the influence scope of forest fire and the distance between the center of the forest fire and a power transmission line according to the positions of the fire points, determining the level of forest fire, and carrying out the early warning according to the level of forest fire. Compared with the prior art, the method can effectively distinguish the open fire point and the blind fire point, can carry out the early warning timely according to the level of forest fire, can effectively improve the detection rate of the forest fire and the put-out success rate of the forest fire, reduces the safety risk of fire fighters, and guarantees the safe and reliable operation of power transmission lines.

The invention discloses a manufacturing method of zinc-aluminum alloy clad layer prestress steel strands. Firstly, high-carbon steel wire rods are selected and subjected to acid pickling, parkerising and drawing in sequence and then subjected to galvanization, the line moving speed is 20-28 m / min, steel wires enter an open-fire furnace so that the organization of the steel wires can be improved, and the steel wires are subjected to alkaline washing, water washing, acid pickling and water washing in sequence; secondly, the steel wires are subjected to assistant plating, drying and galvanization operation in sequence; thirdly, assistant plating, drying and zinc-aluminum alloy layer galvanizing are conducted, the steel wires are subjected to finishing, stranding and stabilizing, and then the steel strands are manufactured. Compared with the prior art, the manufacturing method of the zinc-aluminum alloy clad layer prestress steel strands has the advantages that on the basis of improving the corrosion prevention capability, the steel strands with higher strength, higher tenacity and better anti-fatigue performance can be produced, qualitative improvement is made on the aspects of corrosion resistance, strength, tenacity, anti-fatigue performance and service life of the steel strands, and the effective service life of the steel strands in the bridge building is greatly prolonged.

The invention relates to a safe cabinet-split type switch cabinet and a using method thereof. The safe cabinet-split type switch cabinet comprises a cabinet body. The cabinet body is internally provided with a plurality of independent drawer units. Each drawer unit is provided with a plurality of wiring interfaces. Grooves for wires to be installed are formed in the side wall of the cabinet body. A plurality of fans are arranged on the side wall of the cabinet body. A fire extinguisher is arranged outside the side wall of the cabinet body. The spraying port of the fire extinguisher is communicated with the top of the cabinet body. An electromagnetic attraction mechanism controlling opening and closing of a safety pin of the fire extinguisher is arranged in the outlet of the fire extinguisher. The cabinet body is internally provided with a smoke detector, a temperature sensor and a heating device. A control device and an alarm device are arranged on the top of the cabinet body. The control device receives signals of the smoke detector and signals of the temperature sensor and controls operation of the fans, the heating device, the electromagnetic attraction mechanism and the alarm device. The safe cabinet-split type switch cabinet is installed and maintained conveniently, the temperature inside the switch cabinet can be effectively controlled, an alarm can be given when open fire occurs in the switch cabinet, and the open fire in the switch cabinet can be put out.

The invention discloses a fire early-warning method and device. The method comprises the steps: obtaining a visible image of a to-be-detected region; carrying out the analysis of the visible image based on a predicted algorithm model, obtaining a first target region, wherein the first target region is one region (or more regions) in which open fire is determined to already appear and / or is about to appear in the to-be-detected region; obtaining an infrared thermal image of the first target region; carrying out the processing of the infrared thermal image, obtaining a second target region, wherein the target region is one region (or more regions) in which open fire is determined to already appear and / or is about to appear in the first target region; detecting the temperature change conditions of the second target region, and determining whether to output the early warning information or not according to the temperature change conditions. According to the invention, the method solves a technical problem that a scheme of employing a fire site photographing mode for detecting the fire in the prior art causes a condition that an early fire high-risk point which does not form open fire and the fire trend cannot be detected.

The invention discloses an integrated stove. The integrated stove comprises an open fire protection system, a smoke suction plate, an automatic lifting structure, an automatic plate overturning structure of the smoke suction plate, a high-temperature heating and purification structure, temperature sensors, a signal optical fiber, a lampblack exhaust system, an electrical control center, a solenoid valve, a fuel main pipe, an electric control switch, an exhaust fan, a blower, smoke inlet holes, filtering channels, filtering structures, an oil stain exhaust opening, an oil stain recycling groove, guide rails, a support, driven gears, a driving gear, a speed control motor, a lifting panel, protection cover plates, an overturning motor, an overturning shaft, an overturning fan, a transmission gear, an overturning plate, a cleaning liquid box, a water purification box, a multi-direction shutoff valve, a steam generator, a steam spray head, a waste liquid recycling groove and a steam distribution network. The integrated stove can guarantee the safe and sanitary kitchen environment from multiple aspects and is simple in operation, convenient to use, practical and beneficial for household application and popularization.

An online repairing method for corrugated pipes comprises quickly plugging, pretreating a repairing surface, activatedly processing the repairing surface, laying strengthening layer, sticking a protective film, and curing for 24h at room temperature. The flexible composite adhesive for repairing has the components by weight percentage: 4.7-4.9 of vulcanization paste, 3.3-3.5 of alkyl phenol-formaldehyde resin, 0.45-0.75 of 2-mercaptobenzothiazole, 0.10-0.80 of (3-gamma-triethoxysilylpropyl)-tetrasulfide, the balance being Thiokol. The method can repair and strengthen on-line the corrugated pipes in the pipelines at normal temperature and pressure without open fire, and has the advantage of safety, reliability, energy and environment conservation, thereby having low influence to equipment, lower repairing cost than the cost of jacketing a new corrugated pipe, expanding space for repeatedly repairing, and greatly increasing the service life of the equipment.

The invention discloses an electrical appliance cleaner, which selects comparatively safe methylen chloride, perchloroethylene, F141B to be constituents. Perchloroethylene has high KB value and strong decontaminating and degreasing ability, can form a layer of waterproof protecting film on the surface of material before full volatilization to prevent water vapour from accumulating, and can be used as the cleaner of the invention. F141B has very strong volatility, which can be used for adjusting the volatility of the product. Methylen chloride also has volatility, decontaminating ability and excellent permeability, which is used for improving the resultant force of the product. The electrical appliance cleaner of the invention is safe in use without flash point or fire point, does not burn while encountering with open fire; the electrical appliance cleaner can replace gasoline, xylene and other flammable organic solvents; the electrical appliance cleaner has no obvious effect on vast majority of plastics, rubber and other high molecular compounds.

An open fire multipurpose cooking grill generally comprising a metal “T” shaped stake that can be optionally driven into the ground or placed into a base stand holder in positioned near a campfire, patio fire-bowl, fire-ring, or charcoal container for cooking and tending to food, generally outdoors. The cooking grill having attached to it multiple bracket sleeves allowing for quick and easy installation and removal of multiple cooking grills and food preparation trays which can be raised and lowered and swiveled side to side closer to or further from the fire as needed.

A combination of 2 Smoker / Grills, one horizontal and one vertical. The top of the vertical Smoker / Grill #B is connected to the bottom of the horizontal Smoker / Grill #A by a tube with a damper (#38). Cooking options from the Smoker / Grill HA include: cold or slow smoking, food warmer, spit or rotisserie cooking, conventional grill, oven and tabletop. Cooking options from Smoker / Grill #B include: conventional grill, two forms of a modified conventional grill, hot smoker, steamer, double boiler, deep fryer or turkey fryer, stew pot, two forms of an oven, an outdoor fireplace, an open fire pit and a table top. Accessories from FIG. 4. need to be used with most of these options. Most options from Smoker / Grill #A can be used with most options from Smoker / Grill #B. See CHART #1 for more clarification. Some combinations can use a single fire and some combinations can combine the fires from both grills to enhance / change cooking options.

The invention provides a composite fire extinguishing agent for a lithium battery. The composite fire extinguishing agent comprises the following components in percentage by weight: 50-90% of a fire extinguishing agent; 5%-50% of an inhibition additive; 0%-45% of a driving gas; wherein the inhibition additive is provided with free radicals which are generated by decomposition after heat absorptionand can block combustion. Fire extinguishing agent components in the composite fire extinguishing agent for the lithium battery can quickly extinguish open fire in a combustion area; the inhibition additive can quickly enter the lithium ion battery by virtue of the fire extinguishing agent to inhibit a thermal runaway reaction and block a combustion reaction; the driving gas provides a power source, which is helpful for extinguishing agents and inhibiting diffusion of additives. The purposes of quickly extinguishing open fire and effectively inhibiting the thermal runaway reaction of the lithium ion battery so as to reduce the after-combustion risk are achieved.

The invention discloses a transformer substation environment intelligent monitoring system which comprises a remote monitoring end and a plurality of transformer substation environment real-time monitoring ends. The remote monitoring end comprises a central server, and a monitoring terminal, a remote alarm device and a backup server which are all connected with the central server. Each transformer substation corresponds to an environment monitoring unit. Each environment monitoring unit comprises an environment monitoring center device, and a camera, an inside-station alarm device, an SF6 sensor, a temperature sensor, a humidity sensor, an open fire sensor, a smog sensor, a PM2.5 sensor and a flammable gas sensor which are all connected with the environment monitoring center device. The reliability and safety of power supply and safety of workers are improved.

The invention discloses an electronic inversion welding cutting power supply system apparatus. The electronic inversion welding cutting power supply system apparatus comprises a power supply box. Theinner wall of the power supply box is connected with a power supply body. Heat dissipation ports are formed in the two opposite side walls of the power supply box respectively, and the inner walls ofthe heat dissipation ports are rotatably connected with a plurality of rotating shafts which are arranged in parallel; and the rotating shafts are sleeved with grid plates and gears respectively. Theelectronic inversion welding cutting power supply system apparatus has a simple structure. When open flame occurs in the power supply box due to short circuit, the internal temperature of the power supply box rises; by virtue of a heat conducting effect of heat absorbing sheets, a heat absorbing plate and a heat absorbing box, an expansion airbag is thermally expanded, and two sliding rods are driven to move oppositely. A hook is separated from a bayonet in the lower end of each rack. Under the resilience action of a first spring, each rack moves upward, then the rack is meshed with the corresponding gear to drive the corresponding rotating shaft to rotate, and the rotating shaft drives the corresponding grid plate to a vertical position so as to seal the corresponding heat dissipation port, in order to prevent the open fire from appearing outside the power supply box and to avoid expansion of the fire range. At the same time, by virtue of the grid plates, the amount of air flowing into the power supply box can be reduced and fire behavior can be suppressed.

The invention discloses an environment-friendly sheath material for cable and preparation method thereof, wherein the sheath material comprises the following materials based on parts: 100 parts of POE, 2.5-3.5 parts of DCP, 2-2.5 parts of TAIC, 1.5-2.5 parts of anti-oxidant, 15-25 parts of white carbon black, 40-50 parts of kaolin, 10-25 parts of plasticizer, 30-40 parts of nanometer magnesium hydroxide fire retardant, 5-10 parts of organic silicon fire retardant, 3-8 parts of compound stabilizer, 3-8 parts of compatilizer, 5-7 parts of zinc oxide and 0.5-1.5 parts of coupling agent. The manufacturing steps are as follows: adding components based on the formula into an internal mixer, and drawing pieces after mixing and cooling the pieces and weighing them and putting them into a storehouse. The invention can increase the chart yield by about 30%. The smoke density when the invention is burned by open fire is below 70, and oxygen index can reach over 35 and temperature-resisting grade can reach 50 degrees centigrade below zero-105 degrees centigrade. The sheath material is environment-friendly and satisfies performances of the cable sheath.

The invention discloses a method for manufacturing an immiscible alloy ingot casting in an aluminothermic reduction-slag refining mode, and belongs to the technical field of metallurgy. The method comprises the following steps that (1) according to components of the immiscible alloy ingot casting to be manufactured, metallic oxide powder is prepared; (2) the metallic oxide powder and Al powder are mixed, and then slagging constituents are added; (3) a mixture of the slagging constituents and the powder is put into a reactor, Mg powder is put on a surface layer, under the electromagnetic field effect, open fire ignition is carried out, and a high-temperature melt body is obtained; (4) gold slag smelting is performed on the high-temperature melt body under the electromagnetic field effect, reduction smelting slag on the upper layer is discharged by 30 percent to 50 percent of the total weight, and the smelted high-temperature melt body is obtained; (5) premelting slag is added to carry out refining and impurity removing, meanwhile, deoxidizing agents are injected into the smelted high-temperature melt body, refining slag is removed, and a refining alloy melt body is obtained; (6) forced water cooling is carried out on the refining alloy melt body to be at the room temperature, and then slag removing and ingot extraction are performed. The method is easy to operate, low in requirement for technological conditions, low in cost and capable of rapidly manufacturing large-size immiscible alloy.

The present invention discloses a visible light intelligent identification algorithm. A visible light intelligent identification system employs a fire smoke detection module to perform motion detection for multi-frame images and segment frames of the motion; video images for a time are extracted, preprocessing of the video images is performed according to the form, the color, the texture and the motion form of fire smoke, and areas of the time area and the space area of the fire smoke are determined; secondary identification of features of the fire smoke is performed, the memory learning interference is eliminated, the multiple probability calculation is performed; and real data is obtained, and alarm prompting is given. The algorithm concretely comprises the following steps: (1) environment learning; (2) moving object identification; (3) area division and numbering; (4) smog identification; (5) flame identification; (6) probability analysis; and (7) body simulation and memory storage. The visible light intelligent identification algorithm is mainly applied to forest fire monitoring identification, agriculture moorburn identification and inflammable open fire identification, wherein the state comprises smog, flame form and the like, and the visible light intelligent identification algorithm can identify whether fire behavior is generated or not based on the image technology.

The invention discloses a coal air heater with a preignition hearth and a smoke recycler, which can solve the problems of present product with short service life, lower heating efficiency and worse environment pollution. Wherein, the wind inlet of cycle fan (24) via the cycle smoke channel (23) is through to the side opening (37) of smoke outlet channel (22)); the wind outlet of cycle fan (24) via the outlet (35) of cycle smoke channel (23) is through to the smoke channel (30); the preignition hearth (2) is fixed on the lower pat of coal hopper (3) between the left and right side walls (13). The inventive preignition hearth is thermal-insulated, with higher burning strength, and high application to variable coals. At the back of furnace row, the burnt coke can make the fire bed in open fire condition, to burn the gas fully; said air heater can avoid black smoke to reduce environment pollution; the cycle smoke channel can reduce the temperature of heat exchanger, to improve the service life and efficiency of air heater.