513 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 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.

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.

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.

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.

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.

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.

1. The name of the design product: detector. 2. The use of the design product: design 1 is used for temperature information collection of temperature detector, design 2 is used for smoke information collection of smoke detector. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: design 1 perspective view. 5. Design 1 is specified as the basic design.

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 utility model relates to the technical field of intelligent early warning and automatic fire extinguishing, and discloses a fire early warning and automatic fire extinguishing system for an electric vehicle charging shed. And an early-warning fire extinguishing assembly is arranged below the cross beam and comprises a medicament cabinet, a controller, an area box and an audible and visual alarm. The medicament cabinet is connected with a medicament main pipe which is connected with a spraying main pipe; and a stable, smog and cable type temperature sensing and flame detector is arranged at the bottom of the cross beam. The arranged early warning and fire extinguishing assembly can comprehensively monitor fire hidden dangers in the charging shed, and multi-dimensional and high-precision monitoring of the fire is achieved through multiple detection means such as a temperature detector, a smoke detector, a cable type temperature sensing detector and a flame detector. The detectors not only can quickly find fire at the initial stage of a fire, but also can transmit fire information to the controller in real time through the signal feedback main line, so that the accuracy and timeliness of fire early warning are ensured.

A disposable forest fire detector, which mainly comprises a detection apparatus and a signal transceiving apparatus, wherein the detection apparatus comprises a trigger apparatus, a sound-producing apparatus, and an energy storage apparatus, the trigger apparatus being connected to the energy storage apparatus, and a sound-producing cavity being connected to the energy storage apparatus, and the trigger apparatus being used for triggering the energy storage apparatus to release energy that enables the sound-producing apparatus to operate. By means of using the detector, it is only necessary to widely cover a forest with sound-producing apparatuses for fire detection. After receiving signals, the signal transceiving apparatuses send the signals to a remote terminal of, for example, a fire command center, such that the detection of an entire fire can be completed. The sound-producing apparatus of the fire detector is small, light-weight, low-cost and environmentally friendly, and there is no need to deploy expensive smoke detectors or flame detectors.

The invention relates to a method and to an air-breathing smoke detector (ASD) for inspecting an airflow monitoring device for obstructions and interruptions. The gas flow (V, m) to be monitored has been set to a nominal gas flow value (VN). An interruption message (U) provided in the operating mode is generated when the air flow exceeds an upper threshold (V +), and a blocking message (B) is generated when the air flow falls below a lower threshold (V-). According to the invention, the aspirated smoke detector switches to the test mode independently or in response to a user input (TEST) for inspection purposes. The fan speed (n) or the fan power (P) is correspondingly increased with respect to a nominal speed (nN) or a nominal power value (PN) of the fan (L) for the check with respect to the interruption, and the fan speed (n) or the fan power (P) is reduced for the check with respect to the blockage. A check result (RES) indicating whether (U +) (U-) exceeds an upper threshold value in the check regarding the interruption and whether (B +) (B-) falls below a lower threshold value in the check regarding the blocking is output.

To provide a smoke detector capable of detecting smoke more quickly than a conventional smoke detector.SOLUTION: The smoke detector 11 includes a light emitting unit 111, a light receiving unit 113, a light receiving unit 114, and a control unit 118. The light receiving unit 113 receives scattered light that is emitted from the light emitting unit 111 and scattered by the particles contained in the air in the region A. The light receiving unit 114 receives reflected light that is emitted from the light emitting unit 111 and reflected by a particle passing through the position B. The control unit 118 measures the number of particles that have passed through position B within the most recent period of a predetermined length of time by counting the pulse waves that appear in the change over time of the light intensity signal outputted from the light receiver 114. The control unit 118 determines the presence or absence of smoke in the external space based on the number of particles thus measured and the amplitude of the light intensity signal output from the light receiving part 113.SELECTED DRAWING: Figure 2

The present invention relates to a smoke detector test bench (test device) for the functional testing of a smoke detector, in particular a linear smoke detector based on the transmitted light principle, in a manner that complies with standards and / or is standardized, and to its use or application in this regard, as well as to a corresponding smoke detector test method.

1. Name of the product in this design: Smoke Detector. 2. Purpose of this design: For use in smoke detectors to detect smoke concentration. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A smoke detector includes detector mount that can define a cavity into which air can flow to a detector component of a detector body engaged with the detector mount. The detector mount can include a base, e.g., that defines a cavity into which air can flow and / or into which a portion of the detector body can extend, and an intermediate component that can removably engage with both the base and the detector body so the base is engaged with the detector body via the intermediate component. The intermediate component can include fins or other features to direct air flow in the cavity to one or more portions of the detector body.

This invention relates to the field of safety alarm equipment technology, specifically an explosion alarm device for cable well joints. A smoke detector and a temperature detector are fixedly installed on the top surface of an upper mounting box, with their probes located inside the upper mounting box. Two explosion-proof enclosures are fixedly embedded inside the upper and lower mounting boxes, respectively, and wiring grooves are provided on the side walls of the explosion-proof enclosures. A lifting frame is fixedly mounted above a movable frame via a connecting rod, and warning light strips and buzzers are fixedly embedded on the side walls of the lifting frame. This device enables more accurate detection of explosions at cable joints and effectively prevents damage to equipment and personnel inside and outside the cable well, ensuring the safety of the cable well. The warning light strips and buzzers on the lifting frame provide outdoor alarms, facilitating alerts to maintenance personnel and pedestrians, and enabling maintenance personnel to locate the explosion point more quickly and efficiently.