211 results about "Smoke alarm" patented technology

The invention relates to the technical field of image recognition, in particular to a fire behavior recognition method and system based on video monitoring. The technical problem that the early warning reliability of a video monitoring system on fire smoke is insufficient is solved. The method comprises the following steps: acquiring a monitoring video stream of a monitoring area and time sequence data acquired by a sensor in the monitoring area; determining an evaluation value of the to-be-detected area based on the image feature and the morphological change of the to-be-detected area; determining a confidence factor based on the form change trend of the to-be-detected region and the change trend of the time series data; determining a smoke authenticity value based on the evaluation value and the confidence factor; and adjusting an alarm threshold value of the smoke alarm based on the smoke authenticity value. The method is used for fire smoke early warning and monitoring scenes.

The invention relates to the technical field of fire detection, in particular to a smog alarm method based on a smog particle motion trail, which comprises the following steps: constructing a three-dimensional flow field distribution diagram of smog particles, and aiming at the sectional area change and curvature change of a current channel at a branch path, taking the predicted smog particle position as a center to obtain a smog particle motion trail distribution diagram; associating the flow velocity data of each branch path to obtain a flow velocity gradient sequence of each branch path; on the basis of the flow velocity gradient sequence of each branch path, when the flow velocity gradient exceeds a flow velocity threshold value, the smoke particle position in each branch path is updated; performing trajectory fitting on the smoke particles, and configuring concentration intensity indexes and updating time of the smoke particles in different branch paths according to concentration gradients corresponding to the motion trajectory sequences on the branch paths; and configuring a classification label of each branch path, and carrying out graded early warning according to flow velocity differentiation. And the accuracy and timeliness of smoke alarm are improved.

The invention discloses a video-smoke sensing linkage intelligent fire early warning method and system, and the method comprises the steps: A1, collecting and preprocessing a monitoring video stream and real-time smoke concentration data of a fire fighting access, and obtaining a preprocessed monitoring video stream and preprocessed smoke concentration time sequence data; a2, fire enhancement visual features are extracted according to the preprocessed monitoring video stream; a3, extracting a fire precursor visual feature according to the fire enhanced visual feature, and calculating a preliminary fire confidence score; a4, smoke concentration trend characteristics are extracted; a5, based on the fire precursor visual features, the preliminary fire confidence score and the smoke concentration trend features, calculating a fire confidence score and a dynamic smoke alarm threshold; a6, the fire behavior grade is judged; and A7, generating an event processing instruction according to the fire behavior grade. According to the invention, the problem of inaccurate fire early warning caused by difficulty in linkage of a video and a smoke sensor and incapability of dynamically adjusting an alarm threshold in a traditional method can be solved.

This utility model provides a smoke alarm mechanism for ceiling installation, including a magnetic suction base plate. A smoke alarm body is fixedly installed below the magnetic suction base plate. A magnetic suction cup at the upper end of the magnetic suction base plate is attracted and fixed to the lower surface of the perforated ceiling. A fixing rope fixedly installed on the magnetic suction base plate passes through the perforated ceiling and a limiting plate, and then through a tightening cylinder. It then embeds into a vortex groove through a notch in the tightening cylinder. A locking nut and a lower pressure plate are tightened and fixedly installed on the tightening cylinder, pressing and fixing the fixing rope. This utility model uses a magnetic suction cup to adhere to the perforated ceiling, eliminating the need for drilling, resulting in high efficiency and low cost. Three or more fixing ropes, passing through the tightening cylinder and vortex groove, along with the locking nut and lower pressure plate, provide a secure connection to prevent falling. The vortex groove structure also facilitates fine-tuning of the alarm position, adapting to various installation environments.

The utility model discloses a fire-fighting device for fire-fighting engineering, and relates to the technical field of fire-fighting devices, the fire-fighting device comprises a base and a smoke alarm, the smoke alarm is clamped on one side of the base, both sides of the middle of one end of the smoke alarm are fixedly provided with insertion rods, and the middle of one end of each insertion rod is provided with a notch. According to the utility model, when the smoke alarm is overhauled, the two pressing rods are pressed to extrude inwards, the spring shrinks, the limiting block and the limiting rod move and are separated from the notch and the chute, and the alarm can be taken down for overhauling after the limiting is cancelled; the pressing rod needs to be pressed to drive the spring to contract, the limiting block deviates to one side, the pressing rod is loosened after the inserting rod makes contact with the bottom, the spring is reset, the limiting block and the limiting rod are clamped in the sliding groove and the limiting groove respectively, and then installation can be completed, the time of a maintainer staying at a high position is shortened by simplifying the disassembling and installing process, and safety is improved.

The invention discloses a lithium battery thermal runaway early warning and shock wave collaborative dry water suppression system. The system comprises a heat dissipation structure outer cover arranged outside a lithium battery in a covering mode and an explosion scattering device wrapping the outer cover. A sliding rail is arranged on the inner wall of the outer cover and slidably connected with a bottom heat dissipation plate. The outer cover and the bottom heat dissipation plate are made of flame-retardant materials, and heat dissipation holes are evenly formed in the outer cover and the bottom heat dissipation plate. Temperature alarm devices are arranged on the outer cover and the bottom heat dissipation plate, a smoke alarm device is arranged at the position, located above the lithium battery, of the outer cover, the explosion scattering device is filled with dry water, a deformation alarm device is arranged on the outer wall of the explosion scattering device, and the temperature alarm device, the smoke alarm device and the deformation alarm device are integrally connected with the trigger device. When any two of temperature, flue gas and deformation are detected to be abnormal, the explosion scattering device can be activated to explode, and dry water uniformly covers the surface of the lithium battery. The system is high in universality and safe and reliable to use, thermal runaway of the battery is inhibited physically and chemically, detonation of the battery is prevented, and the use safety of the battery is greatly improved.

The utility model relates to fire control detection technical field, and disclose a kind of smoke alarm remote triggering device for fire detection, including protective cover, the inside of protective cover is installed with smoke alarm, the outer edge of smoke alarm is installed with smoke making storehouse, the inside of smoke making storehouse is opened with cavity, the inner bottom of cavity is installed with heating pipe, the inner wall of cavity is connected with thread ring with thread, the top of thread ring is installed with pressing plate, the inner wall of pressing plate is installed with extension ring, the bottom of extension ring is opened with four recesses;By smoke alarm, it can be remotely controlled heating pipe operation to heat the smoke oil inside cavity, further can generate smoke, so that smoke can be discharged to the inside of protective cover through smoke exhaust pipe, and can be directly sprayed outside smoke alarm, for actively triggering smoke alarm to carry out smoke detection, without manually igniting combustible to produce smoke, more environmentally friendly.

The present application relates to the technical field of smoke alarm, in particular to a kind of intelligent fire-fighting smoke sensing alarm method and system based on Internet of Things, comprising the following steps: installing spectrum analysis sensor in the key area of building, capture spectrum signal, according to preset time interval collection smoke spectrum data, and be transmitted to cloud platform by Internet of Things network node, unified data format, generate spectrum dataset.In the present application, by capturing and analyzing the spectral characteristic curve of smoke, different types of smoke can be distinguished, efficient differentiation between fire smoke and non-fire smoke is achieved, false alarm phenomenon is reduced, combined with real-time environmental data, dynamically adjust the sensitivity of the sensor and the alarm threshold, still can maintain high reliability in complex and variable environment, at the same time, it can trigger multiple device response synchronously, quickly start fire sprinkler, smoke exhaust equipment and other mechanisms, and real-time fire alarm signal is transmitted to relevant departments, shorten the response time, optimize the linkage effect of fire emergency handling.

1. The name of the design product: wireless smoke alarm (photoelectric type). 2. The use of the design product: detecting the concentration of smoke particles in the air and triggering sound and light alarm. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application discloses a smoke sensor structure for new energy vehicles and relates to the technical field of smoke sensors.The smoke sensor structure comprises a shell and a PCB plate on which an induction module is installed.The shell is provided with an end cover for fixing the PCB plate.A grid groove one is formed in the side wall of the shell and is in communication with the interior of the shell.The end cover is provided with a fixing column on the side facing the PCB plate.A fixing hole corresponding to the fixing column is formed in the center of the PCB plate.A communication hole is formed in the fixing column and is in communication with the interior of the shell.A grid groove two is formed in the side wall of the end cover and is in communication with the communication hole.The shell is provided with a line interface for connecting the PCB plate.The grid groove one and the grid groove two of the end cover form a through smoke circulation channel through the communication hole.The grid structure preliminarily blocks large-particle impurities, reduces the pollution of the induction module, ensures that the external smoke can efficiently enter the interior of the shell and contact the induction module, ensures the airflow circulation, and enables the smoke alarm to rapidly respond when a fire breaks out.

This application discloses a smoke sensor, a housing, and a smoke alarm device. The smoke sensor housing includes a cover, a first insect-proof mesh cover, and a base. The first insect-proof mesh cover extends around the periphery of the housing between the cover and the base. The top of the first insect-proof mesh cover is connected to the cover, and the bottom of the first insect-proof mesh cover has multiple first connectors. The base has multiple second connectors, and the first connectors and second connectors are connected one-to-one. A transmitter and a receiver are located inside the housing. The first insect-proof mesh cover includes a first region located between every two adjacent first connectors, and a second region located between the top of each first connector and the cover. Multiple first smoke inlets are distributed on the first and second regions. This application alleviates the problem of smoke blind spots in existing smoke sensors and improves the smoke detection accuracy of smoke sensors.

The utility model relates to the technical field of monitoring alarm, and particularly discloses a coal mine machine room equipment alarm device which is characterized in that a T-shaped sliding plate is slidably mounted in a mounting plate, a fixing plate is fixedly mounted on the side wall of the mounting plate, a sliding column is slidably mounted in the fixing plate, and an inserting block is fixedly mounted at the bottom of the sliding column; a full-thread bolt is rotatably mounted at the top of the inserting block and is mounted in the fixed plate in a threaded manner, a clamping groove for clamping the inserting block is formed in the top of the T-shaped sliding plate, the inserting block is mounted in the clamping groove in a sliding manner, the full-thread bolt drives a sliding column to move from bottom to top, and the sliding stability of the inserting block is improved through the sliding column; a T-shaped sliding plate is extruded from the two sides to the middle, a spiral spring rod is stressed and contracted, the T-shaped sliding plate is retracted into a mounting plate, then the mounting plate is pulled from back to front, the mounting plate is pulled away from the interior of a fixing groove, and the mounting plate is pulled away from the interior of the fixing groove; therefore, the function of quickly disassembling the smoke alarm body is achieved.

The utility model relates to new energy automobile charging system charging alarm and automatic fire extinguishing device, including the charging shed, the charging shed is provided with respectively: spray fire extinguishing system, smoke alarm, passive infrared image sensor, charger and control module, due to the setting of spray fire extinguishing system, when the fire occurs in the charging shed, through the smoke alarm and passive infrared image sensor detect corresponding smoke concentration parameter and temperature change, can send the instruction to spray fire extinguishing system through control module, makes the pump body work, the water in solution tank is guided to the spray head, carries out the fire extinguishing, can be used in industrial production, has very strong practicality.

This utility model relates to the field of detection device technology and discloses a detection device for a fire alarm, including a smoke storage box. A sealing cover is rotatably connected to the left side of the top of the smoke storage box. A support frame is fixedly installed at the top of the inner cavity of the smoke storage box. Magnets are fixedly installed at the right ends of both the sealing cover and the support frame. A steel wire rope is fixedly installed at the right end of the top of the sealing cover. By pulling the steel wire rope downwards, the sealing cover can be rotated upwards to open the top of the smoke storage box. The smoke storage box is then placed over the smoke alarm for detection. After detection, the steel wire rope is released. The compressed push spring, under its elastic force, moves the push rod upwards, pushing the extension block to rotate. This, in turn, causes the sealing cover to rotate in the opposite direction, sealing the smoke storage box and preventing smoke emission during movement. This reduces the use of smoke pellets and lowers detection costs.

The utility model relates to the technical field of alarm devices, in particular to an alarm and ventilation linkage type smoke alarm device which comprises an installation frame, a fixing plate is installed in the installation frame, a ventilation fan is installed in the fixing plate, a rotating column is installed on the inner side wall of the installation frame in an inserted mode, and a shielding plate is installed on the outer surface of the rotating column. And the bidirectional motor is installed on the back face of the rotating column, the bidirectional motor is arranged in the mounting frame, a rotating shaft is installed at the output end of the back face of the bidirectional motor, and a stabilizing ring is fixedly connected to the outer surface of the rotating shaft. The rotating shaft can drive the stabilizing ring and the connecting plate to rotate, so that the connecting plate can drive the knocking block to abut against the left side surface of the metal alarm plate, the metal alarm plate can make a sound, an alarm can be automatically given out, meanwhile, the ventilation fan is started, air in the indoor environment is pumped out through the ventilation fan, and the indoor environment is protected. Therefore, the effects of ventilation and alarm can be achieved simultaneously.

The utility model discloses a fire-fighting smoke alarm device which comprises a sleeve, the inner wall of the sleeve is fixedly connected with a plurality of fixing rods, and the fixing rods are annularly and uniformly distributed on the inner wall of the sleeve. According to the utility model, a traditional installation mode depending on 3M glue and magnet adsorption is abandoned, the installation disc and the bolts are matched to fix the roof, and the plurality of bolts can greatly improve the fixing stability of the installation disc, thereby ensuring the stable installation of the sleeve, the fixed rod, the cylindrical block and the smoke alarm body; meanwhile, through unique cooperation of the fixing rod and the limiting groove in the surface of the cylindrical block and combination of upward acting force applied by the elastic assembly, the smoke alarm body is not prone to loosening and falling off due to external force collision, vibration or environment change after being installed, stable operation of the device in the long-term use process is effectively guaranteed, and reliable guarantee is provided for fire safety monitoring. The device has the advantages of being firm in installation and convenient to disassemble and assemble.

A smoke alarm having a layered structure includes a case, a smoke detecting unit, and a layering plate. The smoke detecting unit is disposed in the case, and includes a smoke collecting box and a control module electrically connected to the smoke collecting box. The layering plate is disposed in the case. The layering plate defines an upper layer space and a lower layer space in the case, the upper layer space is a smoke guiding space, and the smoke collecting box is accommodated in the upper layer space to facilitate smoke-containing air to flow to the smoke collecting box. The lower layer space is a module mounting space, and the control module is accommodated in the lower layer space to facilitate mounting of a sub-module of the control module that is detachable.

The utility model relates to the technical field of container prefabricated cabin manufacturing, and discloses an electromechanical equipment container prefabricated cabin with a smoke alarm function, which comprises a container body, a prefabricated cabin door is arranged on the surface of the front side of the container body, and sound and light alarm lamps are symmetrically and fixedly connected to the surface of the front side of the container body. A control system is fixedly connected to the surface of the left side of the container body, a smoke detection assembly is arranged on the surface of the top in the container body and comprises a mounting block fixedly connected to the surface of the top in the container body, and a mounting groove is formed in the mounting block. A limiting groove is formed in the surface of the bottom of the mounting block, and a clamping groove is formed in the surface of the bottom of the mounting block. According to the smoke detector, through the arrangement of the smoke detection assembly, the protective cover can be conveniently disassembled, and meanwhile, the protective cover can effectively protect the smoke detector and prevent the smoke detector from being subjected to external physical damage or pollution.

A system and method for a photoelectric smoke detector using polarized light is disclosed. The system may include a light source to emit a beam of light at a polarity of interest. The system may also include a light sensor to detect a reflection of the beam of light at the polarity of interest. The system may additionally include a control circuit communicatively coupled to the light sensor. The control circuit may be to detect a presence of smoke and raise a smoke alarm signal. The polarity of interest may be based on an angle of incidence between the light source and the light sensor.

The invention discloses a detector shell and a fire smoke detector, and belongs to the technical field of smoke alarm, the detector shell comprises a shell body, a cover body, a sealing member, an upper cover and a supporting cover, the cover body is embedded in the shell body, the cover body is matched with the shell body, the edge of the cover body extends downwards and is tightly attached to the inner wall of the shell body, and the top surface of the cover body is flush with the top surface of the inner wall of the shell body; the sealing piece is placed on the cover body, the edge of the sealing piece abuts against the flange of the shell, the upper cover is placed on the sealing piece, the shell, the cover body, the sealing piece and the upper cover are tightly connected through screws, and the supporting cover is fixed to the cover body. According to the detector shell and the fire smoke detector, an embedded structure is adopted, the possibility that water vapor and dust enter the interior along shell gaps to erode the control assembly is effectively reduced, and disassembly and maintenance are convenient.

The utility model is applicable to the technical field of high-voltage power distribution cabinets, and provides an assembled high-voltage power distribution cabinet, which comprises a power distribution cabinet body, the power distribution cabinet body comprises a plurality of mounting shells, the plurality of mounting shells are provided with an assembling mechanism, and the assembling mechanism is used for assembling the plurality of mounting shells; the smoke alarm is fixedly arranged in the power distribution cabinet body; the placement shell is fixedly mounted at the top of the power distribution cabinet body; and the fire extinguishing mechanism is assembled in the power distribution cabinet body and the placement shell and is used for extinguishing fire in the power distribution cabinet body. The assembled high-voltage power distribution cabinet provided by the scheme has a fire extinguishing function, and when a fire occurs, the fire can be extinguished in time, so that the situation of loss aggravation caused by fire expansion is avoided, and the overall use safety is improved.

This application discloses a control system and a light-emitting bracket for indicating the location of a fire extinguisher, which is linked to a security alarm. The system includes: a micro central processing unit; a wireless receiving module for wireless communication with the security alarm; a wired connection module for wired communication with the security alarm; a light sensor for sensing ambient light; a low-light module for emitting a weak light to indicate the location of the fire extinguisher in low ambient light; and a high-light module for emitting a strong light to indicate the location of the fire extinguisher during a fire. When the smoke alarm detects a fire hazard, it emits an audible alarm to alert the user. Simultaneously, the smoke alarm sends an alarm signal to the control system. Upon receiving the alarm signal, the control system emits a strong light from the high-light module, allowing the user to clearly observe the location of the fire extinguisher. When the fire hazard is low or controllable, the user can quickly retrieve the fire extinguisher and extinguish the fire.

The utility model discloses a smoke alarm with a mechanical emergency lighting lamp, which relates to the technical field of smoke alarm and comprises a fixing box, an upper cover is fixedly connected onto the fixing box, four corners of the fixing box are fixedly connected with fixing sleeves, locking mechanisms are arranged at the fixing sleeves, and the mechanical emergency lighting lamp is fixedly connected with the fixing sleeves. The fixing box is fixedly connected to the fixing frame through a locking mechanism, a fixing part for fixing the locking mechanism is arranged on the fixing frame, a smoke alarm component is arranged in the fixing box, and the side face of the fixing box is connected with an illuminating lamp through an angle adjusting module; smoke is detected in time through the smoke alarm component, an alarm is given out, precious time is won for people to escape, meanwhile, the circuit board controls the illuminating lamp to emit light, people can conveniently distinguish the escape direction, and escape is facilitated; the locking mechanism and the fixing part are matched with each other, the fixing box is fixed to the fixing sleeve, installation is easy and convenient, and more time needed by installation is saved.

The invention belongs to the technical field of tunnel construction, and particularly relates to an intelligent ventilation system suitable for high-altitude tunnel construction, which comprises a flowing cavity and a main fan, the main fan supplies air to the flowing cavity and blows the air to a tunnel face, the intelligent ventilation system further comprises an auxiliary guide pipe, an auxiliary fan and a smoke sensing alarm, the auxiliary guide pipe is arranged in parallel along the flowing cavity, and the smoke sensing alarm is arranged in the flowing cavity. A plurality of smoke exhaust holes are formed in the auxiliary guide pipe, and the auxiliary fan can blow air bidirectionally; during normal work, the main fan and the auxiliary fan supply air to the flowing cavity and the auxiliary guide pipe respectively; when the smoke alarm detects a fire, the main fan stops working, and the auxiliary fan changes the wind direction, so that the auxiliary guide pipe generates negative pressure; the invention aims to provide more comprehensive oxygen supply for the tunnel in a high-altitude area, prevent harmful smoke from diffusing in case of fire, and improve the safety of tunnel operation.

The utility model relates to the technical field of smoke alarm, specifically is a kind of intelligent power distribution room cable end smoke alarm equipment, including the installation frame being installed in the inside of switch board, the inside of switch board is provided with monitoring box, the inside fixedly connected with control host computer of monitoring box, the lower surface fixedly connected with smoke alarm of monitoring box, the side surface fixedly connected with ethernet temperature and humidity sensor of monitoring box, the inside slidingly connected with horizontal adjusting mechanism of installation frame, the horizontal adjusting mechanism includes vertical board and track, vertical board slidingly connects in the inside of installation frame, in the utility model, installation frame reinforces switch board, vertical board can slide in installation frame, change the position of horizontal adjusting mechanism, further change the horizontal position of monitoring box, also can cooperate with track adjustment the height of monitoring box, so that monitoring box can be installed in different positions, so that it focuses on the monitoring of different positions in the inside of switch board, ensure the sensitivity of monitoring box.

The invention relates to the technical field of security alarm control equipment, in particular to smart park intelligent security alarm control equipment which comprises a base, a smoke alarm and a rotating mechanism, the rotating mechanism is fixedly mounted on the base, and the smoke alarm is fixedly mounted in the rotating mechanism. The rotating mechanism drives a duplicate gear to coaxially rotate at the same frequency through a worm, a differential rotating shaft can do whole-circle motion under the cooperation of a limiting rod, then a swing support swings around a base in a variable speed mode in a fan-shaped area, and therefore more air enters a shutter grid through an air inlet. The detection of the content of particulate matters in the air in one direction is abandoned, and if the wind speed is high outdoors in a park, the equipment can be enlarged to carry out air detection in a wider angle and a larger range, so that the sensitivity of the alarm control equipment is improved, and especially in an outdoor scene or a scene with a large weather influence, the alarm control equipment can be used for detecting the air in a wider range. And the life and property safety of people is further ensured.

The utility model relates to an illuminating lamp with fire detection and alarm functions, and belongs to the technical field of illuminating lamps. According to the technical scheme, a sliding groove (2) is formed in an illuminating lamp body (1), the number of fixing plates (3) is two, the fixing plates (3) are symmetrically and fixedly installed in the sliding groove (2), and sliding plates are installed in the fixing plates (3) in a sliding mode; the limiting groove (10) is formed in the position, below the sliding groove (2), in the illuminating lamp body (1), and the smoke alarm (11) is installed in the limiting groove (10) in an inserted mode. The sliding plate is arranged on the illuminating lamp body, so that the lampshade can be completely exposed to the outside to increase the illuminance, the lampshade can be protected through reverse operation, the lampshade is prevented from aging and discoloring due to ultraviolet irradiation, and dust in the daytime can be prevented from entering the lampshade; and the smoke alarm is inserted into the limiting groove, so that an alarm can be given out when a fire disaster occurs, and people can be reminded to pay attention to safety and take escape measures.

The invention provides a smoke alarm method and device, electronic equipment and a storage medium. The method comprises the steps that a first concentration value collected by a first sensor, a second concentration value collected by a second sensor and a third concentration value collected by a third sensor are acquired; generating a first compensation value according to the change rate of the first concentration value and the second concentration value in the first time period; a second compensation value is generated according to trend values of the first concentration value and the second concentration value in a second time period, and the range of the second time period is larger than that of the first time period; determining a second threshold value according to the first compensation value, the second compensation value and a first threshold value, wherein the first threshold value is an initial alarm triggering threshold value corresponding to the third sensor; an alarm result is determined according to the size relation between the third concentration value and a second threshold value, and the alarm result comprises alarm sending or alarm non-sending; and controlling the alarm to give an alarm in response to the alarm result. And the accuracy of smoke alarm is improved.

The utility model relates to the technical field of alarms, and discloses a combined type smoke alarm, which comprises a smoke alarm main body and a fixed seat, the upper side of the smoke alarm main body is connected with a connecting device, the connecting device comprises a connecting pipe, the left side and the right side of the connecting pipe are connected with first springs, and the left side and the right side of the connecting pipe are connected with second springs. Clamping blocks are connected to the opposite sides of the first springs on the left side and the right side, inserting grooves matched with the clamping blocks are formed in the fixing base, a pushing block is arranged on the upper side of the connecting pipe, and the upper side of the pushing block is arranged in a conical shape; according to the scheme, by arranging the connecting device, a worker can mount and dismount the smoke alarm main body according to needs, the worker can conveniently and rapidly maintain and replace the smoke alarm main body according to needs, by arranging the sliding block, the use stability of the device is improved, and the clamping block is prevented from shaking in the moving process; and meanwhile, the clamping blocks can be limited according to the sliding blocks, and the using efficiency of the device is improved.

The invention discloses an open fire monitoring device based on AI video analysis, and belongs to the technical field of video monitoring. Comprising a control device and a video monitoring module connected with the control device. The control device comprises a controller, and an image processing module, an alarm system, a video monitoring system, a temperature sensor, a smoke sensor and an ultraviolet sensor which are connected with the controller; according to the video monitoring module, a first mounting base is arranged on one side of the lower portion of the control device, a rotating base is movably connected to the lower portion of the first mounting base, and a monitor is connected to the lower portion of the rotating base; a second mounting seat is arranged on the other side below the control device, and a thermal imaging camera is arranged below the second mounting seat; an open fire detector and a smoke alarm are arranged in the middle of the lower portion of the control device. According to the system, fire disasters can be found in time, fire early warning can be carried out, fire behaviors can be analyzed according to monitoring conditions, rescue personnel can make corresponding rescue measures, and heavy losses are avoided.