427 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.

A smoke alarm includes a housing having a generally hollow interior, a printed circuit board arranged within the interior of the housing, and an optical chamber assembly connected to the printed circuit board. The optical chamber assembly has an interior chamber and at least one smoke entry location. A substantial entirety of the interior chamber is external to the housing. At least one light device for evaluating particles is arranged within an interior chamber of the optical chamber assembly.

The utility model relates to the technical field of smoke-sensing alarms, and particularly discloses a smoke-sensing alarm mounting support which comprises a base and a smoke-sensing alarm body, the upper end face of the base is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a gear, the outer wall of the gear is meshed with a first rack, and the first rack is meshed with a second rack. The upper end face of the base is fixedly connected with a vertical plate, the front end of the vertical plate penetrates through and is in threaded connection with a threaded rod, the other end of the threaded rod is rotationally connected with a first rack, and the outer wall of a gear is in meshed connection with two second racks which are oppositely distributed and located above the first rack; according to the device, the two clamping seats can be driven to move by rotating the threaded rods, the smoke sensing alarms of different sizes can be mounted and fixed without electric driving, and the purpose of low use cost is achieved.

The invention discloses fire smoke alarm equipment based on a satellite positioning function, and belongs to the technical field of fire smoke alarm systems. Comprising a smoke alarm and a base, and double interchangeable collecting cylinders are arranged in the smoke alarm. The first collecting cylinder is used for a high-dust environment, and 80% of coarse dust is pre-separated through a large aperture and a settling table. The second collecting cylinder is used for high-humidity environment, small aperture and chimney effect condensation prevention, and the ventilation rate is larger than or equal to 96%. A smoke channel is integrated in an inner cavity of the upper connecting disc, an annular spraying array is arranged on the outer ring of the lower connecting disc, and the integration of detection, positioning and fire extinguishing is achieved. The satellite baseband chip and the infrared maze share an antenna guiding assembly, NMEA coordinates are frozen when smoke exceeds a threshold value, the NMEA coordinates are directly sent to a platform through NB-IoT, the positioning error is smaller than or equal to 2 m, and a platform map is a second-level flash point. The drawer type smoke detection module can be disassembled quickly in 5s, double silica gel sealing and pulse water spraying hole cooling are adopted, and long-term maintenance-free under high-temperature, high-dust and high-humidity conditions is ensured.

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 smokeless electronic cigarette liquid capable of inhibiting generation of visible aerosol and a preparation method thereof, the smokeless electronic cigarette liquid is composed of a matrix component and an essence component, the matrix component comprises food-grade propylene glycol, absolute ethyl alcohol and purified water, and the essence component comprises essence, nicotine salt, a cooling agent, food-grade propylene glycol and a sweetening agent. According to the smokeless electronic cigarette liquid, by canceling traditional atomized matrix glycerol, the electronic cigarette liquid hardly generates aerosol in the heating and using process, namely hardly generates obvious smoke which is lower than an alarm threshold value of a smoke alarm, does not trigger the smoke alarm, avoids environmental residues, and is safe and reliable. According to the present invention, the use requirements of users in public places or no-smoking areas can be met, the trouble to surrounding people is effectively avoided, the harm to the human respiratory system is reduced, the environmental protection and health are provided, the transmission efficiency and the taste of nicotine are retained, and the preparation method has characteristics of simple processing, simple process requirement and low cost, and is suitable for large-scale production.

The invention discloses a low-light power generation hardware management system of a smoke alarm, and relates to the technical field of low-light power generation of smoke alarms, and the system comprises a micro-control module which controls a first conversion module and a second conversion module to carry out power adjustment, electric energy superposition and electric energy bootstrap on electric energy generated by a photovoltaic module. The stage detection module carries out voltage detection of four different stages on the photovoltaic module so as to control the first conversion module and the second conversion module to independently supply power according to different voltage stages, and the transmission module controls the first conversion module and the second conversion module to carry out electric energy superposition. And controlling the first conversion module, the second conversion module and the battery control module to carry out electric energy superposition, and controlling the battery control module to directly supply power when no light exists or a smoke alarm occurs. According to the low-light power generation hardware management system of the smoke alarm, the utilization rate of photovoltaic electric energy can be improved, the electric energy consumption of the battery control module is reduced, the cruising ability is improved, the power utilization requirement is met, and the power supply efficiency is improved.

A push-to-test control panel for controlling a single or a plurality of smoke alarms including an outlet cover for mounting to an outlet box or low voltage outlet box and a circuit board disposed on a back surface of the outlet box. The push-to-test control panel is wired to at least one smoke alarm. Depressing of the first button tests initiates a test or, if the test has been initiated, depressing of the first button stops the test. A time period for the test is controlled by the circuit board to stop testing after an established period of time. The second button silences an alarm function for a period of time as established by the circuit board. The push-to-test device may include an emergency button for triggering a strobe light or other alarm on the exterior of a house for easy identification of the house for emergency responders.

The utility model aims to provide a mounting structure of a smoke alarm, which solves the problem that the traditional mounting structure of the smoke alarm cannot prevent dust, and comprises a top seat, the smoke alarm is fixedly arranged at the lower part of the top seat; the air gathering pipe is arranged at the lower part of the top seat, and the air gathering pipe is arranged on the outer side of the smoke alarm in a sleeving manner; the filter screen is detachably arranged at the lower part of the air gathering pipe; the air blowing mechanism is arranged at the lower part of the filter screen; according to the device, the problem that a traditional smoke alarm installation structure cannot prevent dust is solved.

An outdoor equipment prefabricated cabin safety monitoring system disclosed by the present invention comprises a mobile monitoring mechanism, the mobile monitoring mechanism comprises a mounting strip, the lower end of the mounting strip is provided with a sliding groove, a rotating shaft is rotatably connected between the inner walls of the left and right sides of the sliding groove, and the rotating shaft is provided with a reciprocating thread layer. A sliding block is in threaded connection with the reciprocating threaded layer of the rotating shaft, the sliding block is in sliding connection with the inner wall of the sliding groove, the lower end of the sliding block is fixedly connected with a connecting rod, and the lower end of the connecting rod is fixedly connected with a smoke alarm. And the gas flowing mechanism comprises a vertical plate fixedly connected to the lower portion of the mounting strip, and the inner bottom space of the piston cylinder communicates with the smoke alarm space through a first one-way pipe. According to the monitoring system, the movable smoke alarm is adopted, in the using process, the detection range is widened, and the effect of timely response is achieved through cooperation with the gas flowing structure.

The invention discloses a vehicle, a control method and device thereof and a computer readable storage medium, the vehicle comprises an air compressor and a vortex tube, the compressor is connected with the vortex tube, and the vortex tube is arranged corresponding to a vehicle battery pack. The method comprises the steps that the temperature of a vehicle battery pack, the driving state of a vehicle and the conditions of drivers and passengers on the vehicle are obtained; under the condition that the temperature is larger than a first preset temperature threshold value, an air compressor is controlled to be started, so that the pressure of the vortex tube is increased; and under the condition that it is determined that the battery pack has the smoke alarm, the vehicle is controlled based on the driving state and the conditions of a driver and passengers. According to the method, the battery can be rapidly cooled, the risk of spontaneous combustion of the battery caused by too high battery fault temperature is avoided or reduced, the safety of people and properties in the vehicle can be guaranteed, and the safety risk of a public area is reduced.

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 relates to the technical field of electromechanical equipment protection devices, in particular to an underground electromechanical equipment protection and monitoring integrated device which comprises an electromechanical protection box, a base is arranged at the bottom of the electromechanical protection box, a base plate is arranged between the bottom of the electromechanical protection box and the base, and the side edge of the electromechanical protection box is fixedly connected with an installation base. The electromechanical protection box is screwed on the base through a mounting base, an alarm lamp is mounted at the upper end of the electromechanical protection box, a temperature sensor, a smoke alarm and a sliding groove are arranged on the inner side of the electromechanical protection box, and a box door is rotationally mounted on the front side of the electromechanical protection box. According to the utility model, the equipment mounting flat plate is arranged in the case, and the equipment mounting flat plate can slide to the outer side of the case without being limited by the operation space in the case, so that the earlier-stage mounting work and the later-stage replacement and maintenance work of the equipment are more convenient; and the bearing capacity is enhanced and guaranteed when the equipment mounting flat plate is externally arranged, and the practicability is enhanced.

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 application provides a smoke alarm with a temperature detection structure, comprising a smoke alarm body, the smoke alarm body comprising a flow guide fan, a reflection assembly, an infrared emission module and an infrared receiving module, the flow guide fan being installed at the bottom of a top plate, the side edges of the top plate each being provided with a fixing seat, the top plate and the bottom structure each being installed on a ceiling by using a screw passing through the fixing seat, the side edges of the top plate being provided with a plurality of smoke exhaust holes, the flow guide fan sucking in air from the bottom and blowing out from the smoke exhaust holes, the infrared emission module and the infrared receiving module each being installed at the bottom position by the reflection assembly, only the reflection assembly needing to be maintained and cleaned, the protection effect of the infrared emission module and the infrared receiving module being improved, the temperature sensing module being installed at the bottom of the reflection assembly, the temperature sensing module being quickly cleaned and processed without the need of disassembling the shell.

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 utility model discloses a connection assembly of smoke alarm, including locating top seat, sealed pipe, smoke alarm main part, sealed pipe sets up in locating top seat bottom side, sealed pipe bottom is fixedly connected with smoke alarm main part top side through -going, locating top seat top is connected with locating rod in symmetry, locating top seat top is equipped with the line through -going and opens the mouth, has guaranteed under the condition of not using screw connection installation, smoke alarm main part will not shake up and down the situation, can according to the demand of installation, the height of flexible adjustment locating top seat makes its bottom installation smoke alarm main part stretch out the distance of ceiling bottom and adjust, in the process of installation construction, do not need to carry a large number of punch tool, bolt accessory to carry out the damage to the ceiling in the room to the connection structure of clamping limit is located in ceiling top, avoided the situation of being deliberately disassembled by people, and the safety greatly improves.

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 invention discloses an underground coal mine smoke concentration early warning method and system, and belongs to the technical field of fire early warning. The first wavelength signal and the second wavelength signal of the underground coal mine are acquired, and the target Sott particle size is calculated by adopting a statistical method, so that the data precision is improved. The method comprises the following steps: setting a first threshold and a second threshold, judging an interval where a target Sott particle size is located, judging whether a roadway where a detection unit is located is normal or not according to the interval, collecting multiple groups of continuous first gas concentrations and second gas concentrations in combination with a gas detector, and calculating a first concentration change rate and a second concentration change rate; therefore, the underground state of the coal mine is determined, and the accuracy of smoke alarm is improved. Furthermore, parameters of the smoke detector are periodically updated in combination with equipment noise, the accuracy of data acquisition of the equipment is improved, and the probability of false alarm is reduced.

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.

1. The name of the design product: smoke alarm (AJ-716S). 2. The use of the design product: the design product is used for smoke alarm for detecting smoke and preventing fire. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses an independent smoke-sensing fire detection alarm based on the Internet of Things, which comprises a ceiling assembly, a drilling assembly, a rotating assembly and a shell, and is characterized in that the ceiling assembly is in threaded connection with the drilling assembly, the rotating assembly is in meshing transmission connection with the drilling assembly, the shell is detachably connected with the ceiling assembly, the drilling assembly comprises a plurality of fasteners, and the fasteners are connected with the rotating assembly. The fastener comprises a drill bit, a column body is fixedly connected to the bottom of the drill bit, two elastic pieces are symmetrically arranged at the joint of the drill bit and the column body, and a gear ring is arranged between two baffle rings at the bottom of the column body. Therefore, the base is fastened. According to the independent smoke alarm, extra tools do not need to be carried during installation, installation holes do not need to be reserved during gypsum board ceiling operation, installation of the independent smoke alarm can be conducted after ceiling operation, and the installation flexibility and the installation efficiency of the independent smoke alarm are improved.

1. The name of the design product: smoke alarm. 2. The use of the design product: for monitoring the concentration of smoke and carbon monoxide in the air to monitor and alarm fire in real time. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

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 smoke alarms, and discloses a fire smoke alarm, which comprises an installation disc, and further comprises fixing frames which are symmetrically arranged at the bottom of the installation disc, installation plates are arranged in the two fixing frames, the bottoms of the two installation plates are fixedly connected with an alarm body, and the alarm body is fixedly connected with the installation disc. Heat dissipation holes are formed in the bottom of the alarm body at equal intervals, and smoke inlet grooves are formed in the outer portion of the alarm body at equal intervals. According to the utility model, through the arrangement of the installation assembly, workers can conveniently disassemble and assemble the alarm body, the disassembly and assembly efficiency of the alarm body is effectively improved, the workload of the workers is reduced, and through the arrangement of the dustproof assembly, the alarm body can be effectively subjected to dustproof protection treatment; impurities such as dust in the external environment are prevented from entering the alarm body through the heat dissipation holes and the smoke inlet groove, and the service life of the alarm body is effectively prolonged.

The invention discloses an unattended high-voltage cabinet protection monitoring system, and relates to the technical field of power equipment monitoring. The system collects operation and environment data of a high-voltage cabinet through a sensing module, performs data preprocessing and feature extraction on the operation and environment data through a data processing module, analyzes the operation and environment data through a high-voltage cabinet protection analysis model constructed by a data intelligent analysis module to generate an intelligent analysis result, and meanwhile, performs data analysis on the high-voltage cabinet. The judgment execution module triggers a hierarchical control strategy according to the intelligent analysis result, and the application module displays the intelligent analysis result and gives an alarm. The system is further integrated with an insulation monitoring module, a smoke alarm module and a water immersion detection module, and when the insulation resistance is smaller than 5 megohms, the smoke concentration is larger than 0.1 dB / m or the water level is larger than 1 mm, corresponding alarm and control strategies are triggered respectively. According to the invention, real-time monitoring, intelligent analysis and multi-stage protection of the operation state of the high-voltage cabinet are realized, and the safety and operation and maintenance efficiency of the high-voltage cabinet in an unattended scene are improved.

The utility model relates to a fireproof power distribution cabinet, which comprises a cabinet body and galvanized bolts, wherein the cabinet body is used for carrying out loading protection on each electronic component; the galvanized bolts are used for fixedly mounting the power distribution cabinet; the two ends of the front face of the cabinet body are rotationally connected with fireproof doors through hinges, the cabinet body and the fireproof doors are made of steel plates not smaller than 2mm, the galvanized bolts are installed on the relative external structure of the cabinet body, and the galvanized bolts are sleeved with the insulating gaskets. A smoke alarm used for smoke capturing and alarming is further installed in the cabinet body. According to the utility model, the cabinet body is made of the steel plate with the thickness not less than 2mm, when the cabinet body is impacted by the outside, the good stability of the cabinet body is ensured, and the fire hazard caused by the damage of the electronic components in the cabinet body is avoided; when the cabinet body is impacted abnormally, the vibration amplitude of each electronic component in the cabinet body is further reduced.