649 results about "Smoke detectors" patented technology

The invention discloses a graded detection method and system for an air-breathing smoke-sensing fire in a complex environment, and relates to the technical field of fire-fighting early warning, and the method comprises the steps: recognizing a ventilation opening of a monitoring region in the complex environment, and arranging air-breathing smoke-sensing equipment on the ventilation opening; state monitoring is conducted on the ventilation opening, and working mode parameters of the ventilation opening are obtained and comprise the ventilation starting and stopping state, the wind speed and the ventilation direction; and analyzing to obtain a self-adaptive strategy matched with the working mode parameters to control the sucking pump to drive the air-breathing smoke sensing equipment to collect smoke gas samples, performing multi-time sequence grading detection, and outputting a fire early warning signal. According to the invention, the technical problem that the existing fire detection technology is difficult to accurately collect smoke samples and give out early warning in time in places with complex ventilation structures and obvious air disturbance is solved, and the air-breathing smoke sensing equipment is arranged at the ventilation opening and the sampling strategy is dynamically adjusted; and the accuracy of smoke collection and the real-time performance of fire early warning are improved.

The invention relates to the field of fire cooperative detection, in particular to a fire cooperative detection method and system based on multi-modal fusion, and the method comprises the steps: simulating the smoke diffusion and temperature change process of a fire in a machine room through a fire simulation method, determining the distribution region of smoke concentration and temperature rise, and constructing a smoke detector network and a temperature detector network; smog concentration data and temperature data of the detection points are collected and transmitted to a data processing center for data preprocessing, a comprehensive fire feature matrix is generated through a data fusion method, and the fire area of the fire is positioned through a cross analysis method according to the comprehensive fire feature matrix; the problem that after a machine room has a fire, due to smoke diffusion, the visualization degree is low, and the fire area cannot be accurately judged is solved.

The invention relates to the technical field of intelligent gateways, and discloses a multi-mode industrial Internet of Things intelligent gateway based on edge computing and an implementation method thereof, and the method comprises the steps: obtaining sensor data streams of a door magnetic sensor, a human body sensor, a temperature and humidity sensor and a smoke detector in an intelligent region; constructing a space-time fusion data matrix based on the sensor data stream; inputting the space-time fusion data matrix into an edge layer quantization neural network, a fog layer recurrent neural network and a cloud layer large model for distributed reasoning to obtain a reasoning result set; and performing priority queue scheduling and zero-copy transmission on emergency events, important events and conventional events in combination with the reasoning result set to generate a control instruction sequence, so that parallel operation of data acquisition and processing is realized, and the intelligent level, the response performance and the operation reliability of an intelligent regional Internet of Things system are improved.

The invention provides an intelligent fire prevention and control fire-fighting management system and method for a lithium battery energy storage power station, and relates to the technical field of data processing, and the method comprises the steps: arranging a multi-level temperature sensor, a gas detector and a smoke detector in and outside a battery module, and collecting and forming multi-source monitoring data; performing time sequence rate analysis, and if a preset condition is met, generating early warning data; in combination with sensor matrix distribution in the battery module, spatial cross comparison is executed to obtain abnormal positioning data, and false anomalies are eliminated through multi-point consistency verification; generating a directional processing instruction corresponding to the injection unit, and setting injection data in the processing instruction; the spraying unit is controlled to release an atomized fire extinguishing medium, so that the medium forms a permeation flow field in the gaps of the battery cells, and treatment feedback data is acquired and formed; performing trend analysis, and if the trend is not enough to recover to the preset safety range, generating a secondary processing instruction; according to the invention, the autonomy and accuracy of fire control management are improved.

The invention belongs to the technical field of fire safety early warning, and discloses a fire detection alarm method and system. The method comprises the following steps: monitoring the environmental smoke concentration in real time through a smoke detector arranged in a battery compartment to obtain smoke parameters; synchronously monitoring the environment temperature change through a temperature sensing detector to obtain a temperature parameter; comparing the smoke parameter with a preset smoke threshold value, and comparing the temperature parameter with a preset temperature threshold value; determining an alarm signal grade according to a comparison result, and triggering a corresponding alarm signal based on the alarm signal grade; and after the alarm signal is triggered, corresponding alarm measures and corresponding fire extinguishing measures are executed according to the grade of the triggered alarm signal. Through the above mode, composite grading alarm can be carried out, the accuracy of fire alarm is improved, targeted fire extinguishing measures are taken for different alarms, and the fire extinguishing efficiency is also improved.

In an apparatus including a personal monitoring device which includes a microphone, speaker, camera, memory or database, global positioning device, controller, and transmitter, the improvement including a wearable device configured to include at least one of more components of the personal monitoring device on, with, or within, the wearable device, and a smoke detector, the fire detector, or the carbon monoxide (CO) detector. The microphone, speaker, or camera is located on an exterior of the wearable device. The smoke detector, fire detector, or carbon monoxide (CO) detector, is located on an exterior of the wearable device. The smoke detector, fire detector, or carbon monoxide (CO) detector, detects a presence of smoke, a fire, or a presence of carbon monoxide, and the speaker emits an alarm, a siren blare, or an audible and verbal message. The transmitter transmits a message to a computer or communication device.

The utility model provides an intelligent alarm for fire-fighting detection, which relates to the field of fire-fighting alarm equipment and comprises a shell, a single-chip microcomputer and a communication module are mounted in an inner cavity of the shell, the single-chip microcomputer is used for receiving signals, the communication module is used for remote transmission, a detection module is mounted on the surface of the shell, and the detection module is connected with the shell. The detection module comprises a fire-fighting camera, a smoke detector and a temperature detector, and the detection module is used for ambient environment detection; according to the utility model, the single-chip microcomputer, the detection module and the alarm assembly are arranged, so that an effect of sending alarm information when a fire disaster occurs is achieved, the fire-fighting camera and the smoke detector can detect the surrounding environment, the fire disaster can be found in time, the alarm lamp and the loudspeaker can give an alarm in time when the detection module detects the fire disaster, and the safety of the fire disaster is improved. Through cooperation of the single-chip microcomputer, the communication module, the detection module and the alarm assembly, the use function of the fire alarm is effectively improved, and thus the use effect of the fire alarm is improved.

An artificial intelligence guided, flame tracking fire suppression liquid spray nozzle on a pan and tilt turret base is recessed into a niche of wall mounted fire suppressant tank with a hinged flip door panel. A built-in smoke detector flush with the tank, senses for smoke and in an event fire breaks out, the door panel flips down and drops the pan and tilt turret base to search and lock on and track the flame. The spray nozzle splashes the flame with fire suppressant from its limited volume wall mounted suppressant tank via a high pressure spray pump. The wall tank is backed up to a high volume refill tank located remotely. The system shuts down when the fire is extinguished. Additionally, a hand gesture signal on site or a remote command via Wi-Fi in an emergency provides a fail-safe shutdown to assure premises will not suffer destruction.

The invention relates to a heptafluoropropane fire extinguishing system for an experimental animal barrier facility and a use method thereof, the heptafluoropropane fire extinguishing system comprises a plurality of smoke detectors arranged on a ceiling of the experimental animal barrier facility, and the smoke detectors are equidistantly arranged into a two-dimensional array formed by a plurality of square units; the plurality of heptafluoropropane nozzles are arranged in the centers of the square units, and an HEPA filter is mounted in each heptafluoropropane nozzle; each smoke detector is internally provided with at least one smoke collecting port facing the adjacent heptafluoropropane nozzle and a smoke sensor; the at least one heptafluoropropane gas cylinder is communicated with the heptafluoropropane spray head through conveying pipes, and each conveying pipe is provided with an electromagnetic valve; and the control unit is connected to the smoke sensor and the electromagnetic valves, and is configured to position a fire position according to a signal of the smoke sensor and control the corresponding electromagnetic valves to be opened, so that heptafluoropropane is sprayed through the adjacent heptafluoropropane spray heads to carry out local fire extinguishment.

The utility model relates to a split type track inspection smoke detection device in the technical field of fire alarm, which comprises a track plate, a metal outer track and a metal inner track are arranged at the upper end of the track plate, and a smoke detector is arranged at the upper end of the track plate; during use, the smoke detector slides on the two rails to achieve the purpose of smoke detection in different areas, during mobile detection, the protection frame can be used for protecting the smoke detector to prevent external force from directly acting on the smoke detector, so that the service life of the smoke detector can be prolonged, and in the use process, the smoke detector is prevented from being damaged. When the device is used, a person can rotate the protection plate downwards to separate the protection plate from the protection frame, so that the smoke detector is exposed from the protection frame, and the person can maintain the smoke detector conveniently, and therefore, when the device is used, the device not only can detect different areas, but also can protect the smoke detector and maintain and operate the smoke detector; and the convenience in use is greatly improved.

The invention belongs to the technical field of smoke alarm false alarm prevention, and particularly discloses a smoke alarm water vapor false alarm prevention system based on double emission and double wave bands, which comprises a signal emission module, a signal receiving analysis module, a propagation environment correction module, a light path pollution compensation module and a judgment early warning module. According to the invention, a dual-band detection technology and an intelligent environment adaptation mechanism are innovatively established, the anti-interference capability is enhanced by adopting a dual-light-source cooperative detection and environment parameter real-time calibration technology, and the influence of environmental factors on the detection performance is reduced in combination with a light pollution self-compensation mechanism; and meanwhile, accurate identification is realized by analyzing the physical characteristic difference of smoke and water vapor, and the risk of environmental misjudgment is remarkably reduced while a real fire behavior is quickly responded by establishing a dynamic grading early warning model, so that the key technical problems that smoke detection is easily interfered and water vapor is confused in a complex scene are systematically solved.

To enable obtaining a smoke sensor that can prevent erroneous sensing of smoke.SOLUTION: A smoke sensor (100) comprises: a smoke sensing part (50) for sensing smoke generated in a monitoring area to output a smoke sensing level indicating concentration of the sensed smoke; and a state monitoring part (20) for monitoring a state of an inner face of a flow channel (41) for allowing air in the monitoring area to pass through the smoke sensing part (50), or an object face (31) as a face of an interior of the smoke sensing part (50). The state monitoring part (20) has: a monitoring light-emitting part (21) for emitting light toward the object face (31); and a monitoring light-receiving part (22) for receiving reflected light of light emitted from the monitoring light-emitting part (21), from the object face (31) to output a light-receiving level indicating intensity of the received light as a monitoring light level.SELECTED DRAWING: Figure 2

The invention provides a control method, device and equipment of a smoke detector and a medium, and the control method comprises the steps: obtaining a signal sampling value and an environment parameter according to a preset sampling period; calculating and storing a corresponding initial compensation value according to the signal sampling value; calculating a corresponding adjustment coefficient through an environment correction model according to the environment parameters; the environment correction model represents a function relationship between an environment parameter and an adjustment coefficient; according to the initial compensation value, the adjustment coefficient, a historical initial compensation value and an initial alarm threshold value, calculating a real-time alarm threshold value, and giving an alarm according to the real-time alarm threshold value; the historical initial compensation value is calculated according to a historical signal sampling value. According to the smoke detector control method and device, the equipment and the medium provided by the invention, the technical problem that the alarm threshold cannot be effectively adjusted is solved.

The invention relates to the technical field of fire-fighting management, and discloses an intelligent fire-fighting management method and system based on a multi-modal large model, and the method comprises the steps: 1, collecting multi-modal perception data in a field environment, and transmitting the multi-modal perception data as input data to a multi-modal semantic recognition module; and 2, performing modal analysis and semantic fusion on the input data by using the multi-modal semantic recognition module, and generating a unified semantic description containing fire state elements. According to the invention, a multi-modal perception data semantic fusion mechanism and a multi-modal large model-driven fire behavior recognition framework are adopted, and data of different modals from a camera, a temperature and humidity sensor, a smoke detector and combustible gas monitoring equipment are input into a unified semantic recognition module, so that unified fire behavior state semantic description is constructed; and the technical effects of multi-source data complementation and semantic-level collaborative recognition of the fire state are achieved.

The invention discloses an experimental device and an experimental method for testing fire extinguishing and cooling efficiency of a lithium battery fire extinguishing agent in a limited space in the field of fire extinguishing agent performance research. The experimental device comprises a conveying pipeline, a fire extinguishing bottle, a cooling bottle, a test box, a heating device, a smoke detector, a fire alarm controller, a temperature acquisition device, a pressure sensor, a camera system and a data acquisition system. The data acquisition system controls the fire alarm controller to close the fire extinguishing bottle and starts the cooling bottle to spray a corresponding fire extinguishing agent to the lithium battery after the fire extinguishing bottle sprays and when the conveying pressure is zero, the fire extinguishing time used for fire extinguishing is calculated, and the surface temperature of the lithium battery after the cooling bottle sprays and when the conveying pressure is zero is also acquired. The experimental device can be used for exploring the fire extinguishing effect and the cooling effect of the fire extinguishing agent respectively, experimental support is provided for evaluating the lithium battery fire extinguishing efficiency of the fire extinguishing agent in a limited space, and therefore the fire extinguishing agent capable of meeting the efficient fire extinguishing and cooling requirements of lithium battery fire disasters can be researched and developed early.

There is provided a smoke detector including a light source, a diffractive optical element, a light sensor, a reflective tilted surface, and a light trap region. The light source projects a shaped light beam on the reflective tilted surface via the diffractive optical element. The reflective tilted surface is arranged right above the light trap region, and used to reflect the shaped light beam to the light trap region. A first light blocking wall is arranged between the light source and the light sensor. A second light blocking wall, higher than the first light blocking wall, is arranged between the light sensor and the light trap region.

The environment-friendly embedded fire extinguishing equipment comprises a main body assembly, and the main body assembly comprises a shell, a limiting box, a fire extinguishing agent storage tank, a negative pressure box, a flow guide fan, a negative pressure pipe and a smoke detector; the fire extinguishing agent storage tank is installed in the limiting box, the limiting box is installed on the inner rear wall of the shell, and one end of the negative pressure pipe is fixedly connected and communicated with the negative pressure box. During fire extinguishing, a driving motor drives a first gear shaft, the first gear shaft drives a driving gear, the driving gear drives a toothed plate through teeth, under cooperation of the driving gear and the toothed plate, a lifting seat moves in the vertical direction along the toothed plate, and at the moment, a nozzle can reciprocate in the vertical direction; when the first gear shaft rotates, linkage can be generated through the transmission belt, at the moment, the nozzle can swing up and down, the nozzle further swings up and down while moving in the vertical direction, a fire extinguishing agent can evenly and rapidly cover an ignition point, and the fire extinguishing speed and effect are improved.

This disclosure describes techniques for operating multiple communication protocols on a single channel. In embodiments, such techniques may involve determining multiple communication activities to be performed using a wireless transceiver, retrieving priority information associated with the multiple communication activities to be performed, and determining, based on the priority information, a priority level for individual communication activities of the multiple communication activities. Once such a priority level has been determined, the techniques may further involve identifying a prioritized communication activity of the multiple communication activities having the highest priority level and establishing a wireless communication session between the electronic device and a station associated with the prioritized communication activity using a communication protocol associated with the prioritized communication activity.

The invention discloses a water curtain and flame-retardant curtain synergistic smoke and heat insulation device and a fire prevention and control method, the water curtain and flame-retardant curtain synergistic smoke and heat insulation device comprises a fireproof separation water curtain unit arranged along the junction of adjacent fireproof units, flame-retardant curtains symmetrically arranged on the two sides of the fireproof separation water curtain unit, and an induction unit; the induction unit comprises a controller, a heat-sensitive sensor, a smoke detector and a heat detector, the heat-sensitive sensor is arranged on the flame-retardant curtain, the smoke detector is further arranged on one side of the flame-retardant curtain, and the heat detector linked with the flame-retardant curtain is arranged in the fireproof unit; and the controller is used for controlling the working states of the fireproof separation water curtain unit and the flame-retardant curtain. Through intelligent linkage control of the detector, the flame-retardant curtain and the fireproof separation water curtain unit are started to operate in stages and scenes, the coping efficiency at the initial stage of a fire disaster is improved, smoke diffusion can be effectively controlled, spreading of the fire disaster in the underground garage can be blocked, and a safe space is created for personnel evacuation and fire disaster suppression to the maximum extent.

The invention discloses a control method and system of an energy storage cabinet, and relates to the technical field of energy storage systems. The control method comprises an active control mode, and the active control mode comprises the following steps: S11, obtaining the temperature of the energy storage cabinet based on the temperature detector, and obtaining the smoke concentration based on the smoke detector; s12, the control host obtains the temperature and the smoke concentration of the energy storage cabinet; an alarm signal is output based on the comparison of the operating temperature and the temperature threshold value and the comparison of the smoke concentration and the concentration threshold value; s121, if the operating temperature is greater than the first temperature threshold value or the smoke concentration is greater than the concentration threshold value, outputting a single alarm signal and starting an alarm bell; and S122, if the operating temperature is greater than the first temperature threshold value and the smoke concentration is greater than the concentration threshold value, outputting a combined alarm signal and starting a high-voltage emergency stop system and an audible and visual alarm, wherein the FFS aerosol is started after delay time. Quick response and safe processing of the energy storage cabinet under the abnormal condition are achieved, meanwhile, the influence on the environment is reduced, and the operation cost is reduced.

An apparatus detects a fire in a space. The apparatus contains a smoke detector with a test chamber, at least one air inlet and at least one air outlet. The apparatus further has at least one device, that is connected to the at least one air outlet, for generating a suction for air from the air outlet so that air is suctioned from the space through the air inlet into the test chamber and discharged through the air outlet. The apparatus is configured for use in a vehicle including passenger transportation vehicles.

The invention relates to new energy storage equipment in the technical field of battery energy storage, which comprises a cabinet body with a bottom plate and a top plate, a cooling fan and a plurality of layers of battery rack plates are arranged in the cabinet body, and a cabinet door and cooling holes are mounted on the corresponding side of the cabinet body; a water storage tank is fixed on the upper plate surface of the top plate, a heat-conducting vertical plate is fixed in the center of the lower plate surface of the top plate, a temperature detector and a smoke detector are mounted on the lower plate surface of the top plate, the battery rack plate is fixed between the heat-conducting vertical plate and the corresponding side wall of the cabinet body, and a plurality of flow guide holes are formed in the plate surface of the battery rack plate; a fire extinguisher is fixed to the lower end of the heat conduction vertical plate, and a nozzle of the fire extinguisher is provided with control valves in signal connection with the temperature detector and the smoke detector. A plurality of air inlet holes are formed in the surface of the bottom plate, supporting legs are fixed to the four corners of the lower surface of the bottom plate, a cooling fan is installed in the center of the upper surface of the bottom plate, and cooling holes are formed in the top ends of the side walls of the cabinet body parallel to the heat conduction vertical plates; according to the energy storage equipment, the heat dissipation effect can be improved, and the fire danger can be safely and efficiently coped with.

To provide a smoke detector capable of facilitating the adjustment of smoke detection sensitivity.SOLUTION: The smoke detection device 1 includes a substrate 10, a light emitting unit 11, a light receiving unit 12, a first optical member 111, and a second optical member 121. The light-emitting part 11 is surface-mounted on the main surface 10A side of the substrate 10. The light receiving part 12 is surface-mounted on the 10A side of the main surface of the substrate 10. The first optical member 111 is provided on the light emission side of the light-emitting part 11. The second optical member 121 is provided on the light incident side of the light receiving section 12. There is an air gap Vd1 between the first optical member 111 and the second optical member 121.SELECTED DRAWING: Figure 1

The invention discloses a fire source positioning method and terminal based on an Internet of Things smoke detector, and relates to the technical field of fire source positioning, and the method comprises the steps: 1, collecting the detection data in a monitoring region in real time, and when the detection data meets a preset triggering condition, executing the step 2: starting a time-limited data collection window, step 2, verifying the rationality of the detection data by adopting an RANSAC algorithm, and filtering abnormal detection data; step 3, carrying out multi-modal wind direction estimation, and carrying out wind direction fusion calculation; 4, establishing a three-dimensional Gaussian plume model, simulating spatial distribution of smoke under the action of wind direction and turbulence diffusion, and obtaining a plurality of candidate fire source positioning points; multi-source data mutual verification and compensation are carried out through a multi-modal data fusion mechanism, system errors of a single data source are eliminated, data reliability is improved by matching with an enhanced RANSAC anomaly detection algorithm and an environment adaptive Gaussian plume model, and accurate positioning of a fire source when an indoor fire occurs is realized by matching with time control and confidence evaluation.

The utility model discloses a smoke-sensing fire detector capable of being placed in a data machine room, and relates to the field of smoke-sensing fire detectors. A smoke-sensing fire detector capable of being placed in a data machine room comprises a fixing seat, a smoke-sensing fire detector body is arranged above the fixing seat, a connecting block is fixedly connected to the lower end of the smoke-sensing fire detector body, the lower end of the connecting block penetrates into the fixing seat, fixing grooves are formed in the front face and the back face of the connecting block, and the fixing grooves are fixedly connected with the fixing seat. And the fixing assembly is located in the fixing base, the fixing assembly is used for disassembling and assembling the connecting block, the fixing assembly comprises a positive and negative screw rod, and the rear end of the positive and negative screw rod is connected with a bearing seat in a sleeving mode. The technical problems that an existing smoke fire detector is inconvenient to disassemble and assemble, and when people use the smoke fire detector, later maintenance of the smoke fire detector is difficult, the disassembly and assembly process steps are tedious, time and labor are wasted, and the smoke fire detector is inconvenient to use by people are solved.

The utility model relates to the technical field of fire-fighting equipment, in particular to a fire-fighting safety smoke detector, which comprises a smoke detector main body and a mounting seat positioned at the top of the smoke detector main body, a plurality of connecting claws are welded at the top of the smoke detector main body, and a transmission gear is movably mounted in the mounting seat. A transmission rod located on the peripheral side of the transmission gear is arranged in the mounting base, a transmission rack is arranged at the end, close to the transmission gear, of the transmission rod, a locking hook claw is arranged at the end, away from the transmission gear, of the transmission rod, and an adjusting rod is movably mounted on the mounting base. According to the fire safety smoke detector, the connecting cover plate is installed on the wall body in advance through the screws, the connecting hook claw on the smoke detector body is clamped into the inserting groove, the smoke detector body is pressed, the connecting hook claw extrudes the locking hook claw to move through the inclined face, finally, the connecting hook claw and the locking hook claw are in the clamped state, and installation of the smoke detector body is achieved.

The invention relates to the technical field of electric power engineering data monitoring, and discloses an electric power engineering field data monitoring device which comprises a distribution box, a base is fixedly connected to the lower surface of the distribution box, a distribution box door is rotatably connected to the front face of the distribution box, and a display panel is fixedly connected to the front face of the distribution box door. A smoke detector is fixedly connected to the top of the distribution box, a lifting device is arranged on the upper surface of the distribution box, an electromagnetic shielding device is arranged on the upper surface of the base, and a moving device is arranged in the base. According to the device, the smoke detector can be cleaned through the falling of the camera, the moving wheels can be lifted up and put down at any time, and meanwhile, the device is more stable through the supporting plate.

Magnetic holder for smoke detectors with removal detection

1. The name of this design product: Fire and smoke detector (S88W). 2. Purpose of this design product: used for fire smoke detection. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.