886 results about "Smoke alarm" patented technology

The invention provides an intelligent fire-fighting fire prediction method and system, a medium and a program product, and relates to the technical field of electric digital data processing. The method comprises the following steps: firstly, acquiring real-time smoke monitoring data of a smoke alarm sensor in a target building, and once the data reaches a preset threshold value, immediately determining fire occurrence and locking a target fire source range; thirdly, calculating a fire risk value of the range by means of a fire risk assessment model trained based on multiple factors of a target building and a machine learning algorithm, and determining that a high-risk fire source point exists when the fire risk value is higher than a threshold value; then, combining meteorological data to obtain multi-dimensional environment characteristic data, and inputting the high-risk fire source point and the meteorological data into a fire spreading prediction model trained by a deep learning algorithm to obtain a fire spreading prediction condition; and finally, the situation is sent to a management end for alarming, and according to the method, rapid and accurate pre-judgment of the fire situation is achieved by means of multi-source data and an intelligent model.

The invention discloses a building outer wall fire fighting system based on an unmanned aerial vehicle and a fire extinguishing method thereof, and belongs to the technical field of fire fighting, the building outer wall fire fighting system comprises fixed fire fighting equipment and mobile fire fighting equipment, the fixed fire fighting equipment is arranged on a building body, and the mobile fire fighting equipment is in butt joint with the fixed fire fighting equipment according to fire conditions; and the mobile fire-fighting equipment and the fixed fire-fighting equipment are electrically connected with the fire-fighting control center. The fire early warning cameras and the smoke alarm are arranged on the periphery of the roof parapet wall and used for discovering a fire in the early stage; the outer wall fire-fighting vertical pipe and the fire-fighting power supply are connected with a fire-fighting system of the whole building, and the unmanned aerial vehicle obtains a water source and the power supply through an adapter on the outer wall fire-fighting vertical pipe, so that the unmanned aerial vehicle can continuously work until a building fire is successfully extinguished; the building builds a three-dimensional fire-fighting network by means of indoor and outer wall fire-fighting systems, and the internal and external fire-fighting systems cooperate with each other to accelerate fire extinguishing of the building, reduce fire hazards and guarantee personal and property safety.

The invention belongs to the technical field of fire detection, and particularly discloses a smoke sensor labyrinth optimization design and dust pollution resistance method, which comprises the following steps: detecting corresponding smoke and dust fusion particles and water vapor particles in an air detection area through a signal transmitting device; water vapor particles are screened to weaken smoke alarm triggered by mistake caused by the water vapor particles, a differential signal processing technology is adopted to distinguish and identify fusion particles, meanwhile, the fusion particles are introduced into a labyrinth measuring cavity, the concentration of smoke and dust is measured in the labyrinth measuring cavity, and the detection stability is enhanced; the width of a labyrinth channel in a labyrinth measuring cavity is automatically adjusted according to the smoke concentration to carry out space division of smoke particles and dust particles, so that the adaptability of the detector to a complex environment is improved; the smoke concentration in the labyrinth measuring cavity is subjected to fire early warning judgment, the cleaning device additionally arranged in the labyrinth measuring cavity is started according to the smoke concentration and the dust concentration for cleaning treatment, and the detection continuity is improved.

A one-time activation smoke alarm includes a smoke alarm body and a wall-hanging base. The smoke alarm body includes a case and a sliding sheet. An engaging recessed slot and a supporting protrusion platform are respectively formed on two sides of a bottom of the case. The sliding sheet is slidably disposed on the supporting protrusion platform, and a front end of the sliding sheet has a pressed protrusion portion that extends into the engaging recessed slot. An engaging protrusion platform is formed on the wall-hanging base, and at least one abutting protrusion portion protrudes outward from a periphery of the engaging protrusion platform. The engaging protrusion platform and the engaging recessed slot are capable of being engaged and fixed together such that the abutting protrusion portion abuts the pressed protrusion portion and the smoke alarm body activates a detection function.

The artificial intelligent fireproof smoke exhaust window comprises a ventilation window body, a window sash is arranged on the right side of the ventilation window body, fireproof sound insulation glass is installed in the window sash, the bottom end of the window sash is hinged to the bottom end of the right side of the ventilation window body, and a driving assembly is arranged between the window sash and the ventilation window body; a smoke exhaust assembly used for exhausting smoke outwards is arranged between the upper end of the ventilation window and the window sash. The driving assembly and the smoke exhaust assembly are arranged between the ventilation window and the window sash, the smoke alarm, the temperature sensor and the equipment box are arranged on the right side of the ventilation window, the equipment box can receive signals transmitted by the smoke alarm and control the electric telescopic rod to be started, and the electric telescopic rod drives the window sash to be opened; and meanwhile, in the opening process of the window sash, a T-shaped groove, a T-shaped block and a guide block can drive a movable plate to be overturned and opened, so that a fan corresponds to an exhaust channel, the fan exhausts smoke, the smoke exhaust effect is improved, and safety accidents are avoided.

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

The invention is suitable for the technical field of smoke alarm, and particularly relates to a smoke alarm method and system based on cloud management, and the method comprises the steps: building a smoke early warning model based on the installation position of a smoke alarm; loading a smoke early warning model of the corresponding area according to the position of the smoke alarm; acquiring smoke concentration data of the smoke area, dividing the smoke area into a plurality of detection grid units, and performing fire behavior simulation to obtain fire behavior simulation data; and acquiring the real-time concentration data of each smoke alarm, calculating the matching relationship between the fire behavior simulation data and the real-time concentration data, determining the position of the fire behavior, and sending out fire behavior early warning through the cloud server. According to the invention, when the smoke concentration is increased preliminarily, the smoke early warning model is used for fire behavior simulation, and the occurrence area of the fire behavior is determined according to the simulation result and the actually detected smoke concentration change, so that the purpose of fire behavior early warning is achieved, the source of the fire behavior is disposed in advance, and the safety is improved.

The invention relates to the technical field of smoke alarm, and particularly discloses an anti-false-alarm fire-fighting smoke alarm method and system and a storage medium, and the method comprises the steps: carrying out the deep analysis through the refined obtaining of the data collection process parameters of a fire-fighting smoke sensing device, obtaining the data collection sensitivity factors, and combining with the data analysis process parameters to obtain the false alarm of the fire-fighting smoke sensing device. The step is crucial for improving the accuracy of the fire-fighting smoke sensing device, a scientific basis is provided for judging whether the performance of the fire-fighting smoke sensing device is optimized or not, the false alarm rate is effectively reduced, and the overall efficiency of the fire-fighting smoke sensing device is improved. The environment parameters of the target area are collected in real time through the fire-fighting smoke sensing device, the smoke fire-fighting demand coefficient of the target area can be accurately evaluated in combination with the response precision factor, the coefficient directly guides whether false alarm prevention and early warning measures need to be carried out on the target area or not, and therefore the fire risk is effectively prevented.

The invention discloses a smoke alarm method and device, electronic equipment and a storage medium, and relates to the technical field of smoke alarm, and the main technical scheme comprises the steps: calling a preset dust particle detector in a smoke alarm to detect the dust particle concentration of a target place; when it is determined that the dust particle concentration is smaller than a preset first threshold value, a preset oily particle detector in the smoke alarm is called to detect the oily particle concentration of the target place; and when it is determined that the oily particle concentration is greater than a preset second threshold value, outputting alarm information so as to process the target place based on the alarm information. Compared with the prior art, according to the embodiment of the invention, the preset oily particle detector in the smoke alarm is called to detect the oily particle concentration of the target place, and the alarm information is output under the condition that the oily particle concentration is determined to be greater than the preset second threshold value; smoke alarm is carried out through the oily particle concentration, and the smoke alarm accuracy is improved.

The invention discloses a smoke alarm device and an alarm control method, and particularly relates to the technical field of fire-fighting alarm devices.The device comprises a shell, and a multi-mode sensor module is arranged in the shell and used for collecting parameters in the environment in real time and generating detection signals; the data processing unit is electrically connected with the multi-mode sensor module through an I2C bus and is used for performing multi-dimensional analysis on the detection signal and generating an alarm decision instruction; the grading alarm module is used for receiving the alarm decision instruction through a GPIO (General Purpose Input / Output) interface; wherein the grading alarm module comprises a visible light warning assembly which comprises an RGBLED array and a laser projector and is used for generating a visual alarm and escape guidance; the sound wave generating device is used for transmitting a directional frequency-adjustable sound wave signal; the wireless communication module is electrically connected with the data processing unit; the invention aims to solve the problem that a smoke alarm device in the prior art can only play a role in warning and cannot effectively guide evacuation of users.

The present invention discloses a distribution box based on intelligent monitoring, including an electricity monitoring module, a temperature monitoring module, a network data transmission module, an alarm monitoring module and a working status monitoring module, which can monitor the voltage and current flowing into the distribution box, monitor the voltage and current flowing into the distribution box, and can also interact with user terminals for data, monitor the mains power failure and smoke alarm, and monitor the working status of each circuit in the distribution box. The present invention can provide a safe and stable power environment for each power circuit.

The invention discloses a safety protection device of a lithium battery pack, and relates to the field, the safety protection device comprises a protection shell and a power-off assembly, the power-off assembly comprises a first splitting block mounted on a top cover, the top end of the first splitting block is fixedly connected with a second splitting block, the first splitting block and the second splitting block are vertically arranged, and the bottom ends of the first splitting block and the second splitting block are conical; the power-off assembly is used for pushing the first splitting block and the second splitting block downwards after the smoke alarm receives a smoke alarm, so that multiple groups of batteries in the lithium battery pack are pushed to the periphery under the action of the first splitting block and the second splitting block, and after the distance is enlarged, the plugging blocks are separated from one another to be powered off; by arranging the power-off assembly, the sealing assembly and the fire extinguishing assembly, the lithium battery pack can be effectively and safely protected, and normal heat dissipation of the lithium battery pack is not affected on the basis, so that the problem that heat dissipation and safety protection cannot be considered at the same time in the prior art is solved.

The invention relates to an air-ground dual-purpose tunnel inspection robot intelligent control system, and belongs to the technical field of robot control, the system comprises an unmanned aerial vehicle and an unmanned vehicle, the unmanned aerial vehicle and the unmanned vehicle are cooperatively used, and cooperative use of the unmanned aerial vehicle and the unmanned vehicle comprises control of integrated operation of the unmanned aerial vehicle and the unmanned vehicle and control of split operation of the unmanned aerial vehicle and the unmanned vehicle; the system further comprises a sensing fusion module, a path planning module, a network communication module, an obstacle observation and prediction module and an intelligent control module, the sensing fusion module is arranged on the unmanned aerial vehicle and the unmanned vehicle, and the sensing fusion module is used for detecting external information of the unmanned aerial vehicle and the unmanned vehicle. The sensing fusion module comprises a camera, a radar, a laser radar, an ultrasonic sensor, an inertial measurement sensor, a GPS positioning sensor, a smoke alarm sensor and a toxic gas detection sensor; the unmanned aerial vehicle communicates with the unmanned vehicle; according to the invention, the safety and reliability of tunnel inspection work are effectively improved, and accurate control of the tunnel inspection robot is realized.

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 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.

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 utility model discloses a methane temperature alarm which comprises an upper shell, a lower shell, an induction execution assembly and an alarm device, the upper shell and the lower shell are buckled to form a cavity, and the induction execution assembly and the alarm device are installed in the cavity; the induction execution assembly comprises a starting switch, a detection control circuit and a sensor device, the sensor device comprises a methane sensor and a temperature sensor, the methane sensor is used for detecting environmental methane, and the temperature sensor is used for detecting the temperature of rhizoma polygonati; the detection control circuit is installed on the circuit board and comprises an amplification module, an analog-to-digital conversion chip U3 and a controller U1, and the output end of the methane sensor is connected with the input end of the amplification module. The methane smoke alarm solves the problem that in the prior art, a starting switch needs to be installed on an upper shell or a lower shell, so that an electric wire between the starting switch and a detection control circuit is too long.

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 discloses a multi-source intelligent analysis system and method for power plant area personnel safety management. According to the system, multiple technologies including big data analysis, a deep learning algorithm, UWB high-precision positioning, Beidou positioning and navigation, a pressure sensor, a smoke alarm and an attitude sensor are integrated into an intelligent helmet worn by a worker, and a complete safety management solution is formed. The system can collect position information, behavior states and environmental data of operators in real time, perform multi-source data fusion processing, and intelligently analyze the standardization of operation behaviors and the safety of the surrounding environment. Through multi-dimensional risk assessment, early warning of safety risks of operators is realized, early warning prompts are sent to managers, and intelligent management and control support is provided for personnel safety in a power plant. The system is mainly composed of a data acquisition module, a data fusion processing module, a behavior analysis module and an early warning and feedback module, and can significantly improve the safety management level of a power plant area and the protection effect of operators.

The utility model provides a liftable smoke alarm device which comprises a smoke alarm which is arranged indoors through a lifting assembly. The lifting assembly comprises a first fixed pulley, a second fixed pulley, an upper limiting piece, a lower limiting piece and a pull rope. The first fixed pulley and the second fixed pulley are both arranged at the indoor top and are arranged at intervals, the upper limiting piece is arranged below the second fixed pulley and provided with an upper penetrating hole, and the lower limiting piece is arranged below the upper limiting piece and provided with a lower penetrating hole; the other end of the pull rope sequentially bypasses the first fixed pulley and the second fixed pulley and continues to sequentially penetrate through the upper penetrating hole of the upper limiting piece and the lower penetrating hole of the lower limiting piece, the pull rope is provided with a check block below the upper limiting piece, and the smoke alarm can descend to the upper limiting piece to be blocked by the check block by loosening the pull rope. The pull rope is pulled down so that the smoke alarm can rise to the lower limiting piece to be blocked by the stop block. According to the utility model, the large-range lifting of the smoke alarm can be effectively ensured, and the smoke alarm is very suitable for smoke alarm in a relatively high indoor environment.

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.

The embodiment of the invention discloses a forest fire real-time monitoring system based on multiple sensors of an unmanned aerial vehicle. The forest fire real-time monitoring system is characterized by comprising a four-rotor unmanned aerial vehicle, edge computing equipment, a carbon monoxide sensor and an infrared visible light double-camera, the quad-rotor unmanned aerial vehicle reciprocates and patrols the area for a long distance by relying on a flight task pre-input by edge computing equipment in a specified working range, and a charging hangar is configured at a take-off point of the quad-rotor unmanned aerial vehicle; the edge computing device is installed on the quad-rotor unmanned aerial vehicle, obtains video streams of visible light images and infrared images shot by the infrared and visible light double-camera in real time in the process of flying along a path, carries out real-time smoke alarm in combination with an electric signal input by the carbon monoxide sensor, and carries out multi-mode real-time monitoring by utilizing multiple sensors; when the edge computing device recognizes the forest fire, the forest fire is fed back to the quad-rotor unmanned aerial vehicle, then the quad-rotor unmanned aerial vehicle enters a return flight mode, and forest fire positioning is recorded in the device and fed back to the data center.

The utility model provides building fire engineering detection equipment, which comprises a first supporting rod, a guide groove is arranged at the bottom of the first supporting rod, a second supporting rod is arranged in the guide groove, a rotating shaft is arranged at the top of the second supporting rod, and the rotating shaft is in sliding connection with the guide groove. An inserting shaft is arranged at the top of the second supporting rod and connected with the bottom of the first supporting rod in a clamped mode. According to the utility model, the first supporting rod and the second supporting rod which are telescopic are arranged, so that the first supporting rod and the second supporting rod push the sealing shell to be connected with the outer wall of the smoke alarm, and detection equipment can be fixed outside the smoke alarm without a ladder; then the pressing plate is pushed downwards to extrude the smoke in the tank body, so that the smoke is sprayed out, the smoke is detected by the smoke alarm, an alarm is given out, and whether the smoke alarm can be normally used or not is determined.

The utility model discloses a steel door with an automatic alarm function, which comprises a door frame and is characterized in that a steel door is hinged to the inside of the door frame, a smoke alarm is arranged on the surface of the steel door, an escape door is hinged to the inside of the steel door, a driving assembly is arranged inside the steel door, and the smoke alarm is arranged on the surface of the escape door. Through the arrangement of the smoke alarm, smoke generated by combustion can trigger the smoke alarm, so that the smoke alarm gives out an alarm sound to remind people in a building, through the arrangement of the explosion-proof glass, people outside the steel door can conveniently observe the internal fire condition, through the arrangement of the fireproof filler and the flame-retardant layer, heat transmission can be reduced, and the fire-proof effect is improved. And through arrangement of a driving assembly, a second bevel gear rotates, then a two-way lead screw is driven to rotate, a moving plate is moved, then a clamping block is separated from a clamping groove, an escape door can be opened, and indoor people can escape conveniently.

The utility model belongs to the technical field of high-rise building fire-fighting equipment detection, and particularly relates to a high-rise building fire-fighting equipment detection device, which comprises a smoke hood, the bottom of the smoke hood is in threaded connection with a circular-truncated-cone-shaped bottom-layer protective cover, a plurality of uniformly distributed air inlet holes are formed in the circumferential side wall of the bottom-layer protective cover, and a fan is mounted in an inner cavity of the bottom-layer protective cover; the overall size of the device is small, fire fighting detection is conducted on a smoke alarm by means of the multiple detection mechanisms at the top of the device body, detection personnel can conveniently hold the device body by arranging the first butt joint rod, the fan is arranged and arranged under the smoke generator, and the detection efficiency is improved by arranging the first butt joint rod and the second butt joint rod. The smoke is quickly blown away by using wind generated when the fan works, so that residual smoke in the bottom of the bottom plate, the inner cavity of the displacement cavity and the inner cavity of the hollow interlayer of the diffusion head can be quickly discharged under the action of the wind generated when the fan works, time is greatly saved for subsequent detection, and the overall detection effect of the device 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.