1138 results about "Fire detector" patented technology

A sprinkler system comprises a network of CPVC conduits and a plurality of sprinklers. The system includes an electrically activated solenoid control valve to allow fluid to flow in the pipe network. One or more fire detectors operate independently of the condition of the sprinklers. Upon detection of an incipient fire situation, a fire detector sends an electrical signal to cause activation of the control valve. Upon activation of the control valve, fire suppression fluid is caused to flow through the conduits before the incipient fire situation matures into a sprinkler-triggering event. The cooling effect of fluid flowing through the conduit enables the conduit to resist structural failure prior to sprinkler deployment. The control valve may be disposed at a remote location in the sprinkler line and be operable as part of an inspector's test connection.

To eliminate the drawbacks of false alarm problems due to mimic flame features of sunlight or moonlight reflecting on wave or mimic flame features of fabrics, animals or stage flames and alarm failures of methanol or ethanol burning flames or flames under a high illumination background condition, a multi-wavelength video image fire detecting system is disclosed consisting of a multi-wavelength video image fire detector, which is comprised of a color and near IR dual-mode camera, a color and B/W dual-mode camera, an image capture module, a processor and controller, an I/O module, a housing and a visible light and near IR view window, an alarm and indicate equipment, a setting and debugging system, a communication equipment, an area alarm and monitor system, and a pan & title and control system.

A fire suppression system for a container including a first tank containing a first liquid component of a two-part foam and a second tank containing a second liquid component of the foam. The system also includes at least one liquid component release device configured to be selectively capable of releasing the first and second components from their respective containers upon receipt of a signal from a fire detector upon detection of a fire. The two-part foam components are propelled through the system by a pressurized propellant that, upon release of the release device, causes the exit of the foam components from their respective tanks, through a mixing conduit to at least one nozzle. The nozzle is configured to spray the liquid component foam mixture into the container wherein the foam cures into a substantially semi-rigid, closed cell foam that is substantially impermeable and may have charring and/or intumescence properties.

The invention provides a self-contained automatic fire detection, warning, and suppression life safety system having an extinguishant source and a fire detector coupled to an electronic processor. The processor has logic to interface with components for detecting and warning of a fire and releasing the extinguishant. Self-diagnosis logic checks the entire system's function, pressure, power level, and power source. Additional sensors are provided for detecting various hazards, and the processor has logic for proper response.

An enclosure comprising elements for air management, sound attenuation and fire suppression in a trailer-mounted mobile electrical power generation system. Air management is provided by ducts, fans, seals and a barrier wall. In addition, by establishing airflow away from spark-producing equipment, any fuel that might leak will not accumulate near the spark-producing equipment, and thus fire and explosion risks are reduced. Targeted sound suppression in the ducts, walls, floor and ceiling of the enclosure provides acceptable noise levels. Fire detectors, a fire suppression system and dampers allow for quickly controlling fires inside the enclosure. A roof panel sealing system provides access into the enclosure during assembly and maintenance while providing a watertight and noise tight seal during transit and operations.

Systems, methods and aspect thereof for a fire protection system including a releasing control panel. In one aspect a fire protection system for a residential unit as defined in the 2002 Edition of the National Fire Protection Association Standard 13, 13D and 13R having at least one dwelling is provided. The fire protection system preferably includes a liquid supply source along a main line and a network of pipes in communication with the dwelling. The system includes at least one sprinkler in the network to discharge a fluid within about fifteen seconds of sprinkler activation. In addition, the system includes at least one fire control panel disposed between the main line and the pipe network to control release of a fire fighting fluid under various control modes. The system further include at least one fire detector disposed in the at least one dwelling and in communication with the at least one fire control panel. In one aspect of the preferred system is sectional control to the first and at least a second dwelling.

The invention discloses a dynamic firefighting emergency evacuation indication system for a large-scale public building. The dynamic firefighting emergency evacuation indication system comprises an evacuation indication setting subsystem, a firefighting monitoring and predicating subsystem, a dynamic evacuation indication adjusting subsystem and a crowd evacuation predicating subsystem. Firstly, evacuation indication distribution in the large-scale public building is set according to the evacuation indication setting subsystem; secondly, firefighting accidents happening in the large-scale public building are considered, multiple fire detectors are used for obtaining information such as the position and the intensity of a fire, and a computer model is used for predicating the development of the fire; thirdly, the development of the fire is used for dynamically adjusting evacuation indication to ensure that the evacuation indication points to a safe area; finally, a built cellular automaton evacuation model considering the evacuation indication function is adopted to predict crowd evacuation and feeds back a predication result to the dynamic evacuation indication adjusting subsystem. The evacuation indication is corrected again according to the crowd density, the evacuation time and the like, and the evacuation efficiency is improved.

The invention discloses a high-usability high-reliability and high-efficiency fire evacuation indicating system and a method. The system adopts a three-layer system structure formed by an evacuation indicating control host machine, passageway evacuation indicating control sub machines and passageway detection/indicating devices, wherein the passageway evacuation indicating control sub machines are positioned at stairs of each floor, each unit of the system exchanges information through an element interconnect bus (EIB), and the passageway detection/evacuation indicating devices are directly embedded into the control sub machines. Wireless backup communication is additionally added between the host machine and the sub machines (the passageway detection/evacuation indicating devices), and the integral reliability and the usability of the system are enhanced. The secondary threshold warning strategy of a composite fire hazard detector is adopted, a corresponding information processing method is used as an auxiliary measure, in addition, evacuation paths are continuously regulated according to the real-time fire conditions, the goals of shortening the warning time and reducing the mistake warning rate are reached, and the usability of the evacuation indicating system is further improved. The space positions of the detection/indicating devices are shown according to the floors on the basis of the three-dimensional geographical characteristics of the tall building evacuation paths, the building typical evacuation structure and the Dijkstra algorithm with an improved data structure are adopted, and the route planning efficiency of the escape route is improved.

An ambient condition detector incorporates an audio transducer for discrimination between alarm and non-alarm conditions. The transducer can provide occupancy information. In addition, a monitoring system can graphically present information as to the location of individuals, such as firefighters, in the region.

A fire detection system for an enclosed area comprises: at least one infrared (IR) imager for generating infrared images of at least a portion of the enclosed area, for determining from the images that a fire is perceived present in the enclosed area, and for generating a first signal indicative of the perceived presence of fire; at least one fire detector for monitoring at least a portion of the enclosed area, the fire detector comprising at least one fire byproduct chemical sensor for generating at least one second signal representative of the presence of at least one fire byproduct chemical in the enclosed area; and a controller governed by the first and second signals to confirm that a fire is present in the enclosed area. In one embodiment, the enclosed area is divided into a plurality of detection zones with at least one fire detector disposed at each detection zone. In this embodiment, the controller includes a first controller governed by the second signals for generating a third signal indicative of the presence of fire in the corresponding detection zone; and a second controller governed by the first and third signals to confirm that a fire is present in at least one detection zone of the enclosed area.

A fire detector is disclosed that successively images a particular area from geosynchronous Earth orbit satellite to attain very good signal-to-noise ratios against Poisson fluctuations within one second. Differences between such images allow for the automatic detection of small fires greater than 12 square meters. Imaging typically takes place in transparent bands of the infrared spectrum, thereby rendering smoke from the fire and light clouds somewhat transparent. Several algorithms are disclosed that can help reduce false fire alarms, and their efficiencies are shown. Early fire detection and response would be of great value in the United States and other nations, as wild land fires destroy property and lives and contribute around five percent of the US global carbon dioxide contribution. Such apparatus would incorporate modern imaging detectors, software, and algorithms able to detect heat from early and small fires, and yield detection times on a scale of minutes.

The invention discloses a method for intelligently detecting, early warning and forecasting a fire in an underground space and a device using the method comprising a fire signal detector, an analog-to-digital converter, a data manager, a monitor, a CCD camera, a signal transfer device, a fire alarm control unit, a digital-to-analog converter, a warning device and an underground space ventilation and heat exchange measuring device, wherein the fire signal detector transfers a detected signal to the data manager via the analog-to-digital converter, the information is processed by the data manager and is transferred to the fire alarm control unit via the signal transfer device, and is transferred to the warning device via the digital-to-analog converter, and the data manager processes the information and displays the processed information on the monitor; the CCD camera is connected with the monitor; the underground space ventilation and heat exchange measuring device transfers the information to the data manager. The method and the device adopt a plurality of fire detectors to detect a fire so as to improve an accuracy of a system, return a forecasted result to the system, and use a self-learning capability of a support vector machine to realize high fault tolerance and intellectualization of the system.

A fire detector and method of using it generate a fire alarm through use of a smoke detector and a carbon monoxide detector once the smoke detector detects a threshold level of light obscuration for greater than a first pre-selected time period or a reduced threshold level of light obscuration for greater than a second pre-selected time period or the CO detector detects a rate of increase in CO concentration which exceeds a first preselected CO rate for a third pre-selected time period and the smoke detector detects the reduced threshold level of light obscuration or the rate of increase in CO concentration exceeds a second preselected CO rate for a fourth pre-selected time period. The fire detector and method can also use a carbon dioxide detector and generate the fire alarm when either a rate is of increase in concentration of CO₂ exceeds a first CO₂ predetermined rate for a fifth pre-selected time period and the smoke detector detects a reduced threshold level of light obscuration or the rate of increase in concentration of CO₂ exceeds a second CO₂ predetermined rate for a sixth pre-selected time period.

The invention relates to a suspended intelligent mobile fire extinguishing system, and in particular relates to a suspended intelligent mobile fire extinguishing system for a highway tunnel. The system comprises a suspended track, an image monitoring device, a fire-fighting linkage device, a front-end sensing device, an intelligent fire-fighting car, a wireless transmission network, a garage concentrated control zone and a remote concentrated control zone; the image monitoring device is composed of a spherical infrared video network camera and is used for collecting image information in the monitored area of the tunnel; the fire-fighting linkage device is composed of an audible and visual alarm, a voice broadcaster, a fire-fighting linkage controller and other linkage equipment, and is used for achieving fire alarm and remote voice broadcasting in the tunnel; and the front-end sensing device is composed of a fire detector, a smoke sensor, a protocol conversion module and a temperature detector. The intelligent mobile fire extinguishing system for tunnels is capable of rapidly reacting, timely arriving at the scene, carrying out effective rescue on personnel near a fire accident, controlling early fire development, and putting out the fire as soon as possible.

A system for confirming the detection of a fire using a plurality of radiation or flame sensors each equipped with a radiation detector and an optical filter having a spectral transmission characteristic in which at least one optical filter is redundant to at least one other optical filter. The result is a system having operationally redundant sensors. In use, if a fire is detected by one of the redundant sensors without including the other redundant radiation sensor in the fire detection calculation, then a fire detection algorithm can switch to the other operationally redundant sensor to check for confirmation of a fire. Due to the spatial separation and if the object is small and close, a different result will be obtained with the redundant detector being used in the calculation compared to the primary detector that is associated with the redundant detector.

The invention relates to a security monitoring system and monitoring method. The monitoring system includes an alarm danger signal acquisition module, an intelligent control unit, a network transmission unit, an alarm information processing unit, and a monitoring terminal. The alarm danger signal acquisition module includes a human body infrared detector, a smoke and fire hazard detector, a humiture sensor, and a house monitoring pick-up head. The human body infrared detector includes a plurality of sets of thermopile infrared temperature sensor arrays. The intelligent control unit uses an ARM processor. The network transmission unit includes an Ethernet module, a GPRS network module, a 3G/4G network module, a Wi-Fi module, and a wireless transmit-receive module. The wireless transmit-receive module includes a wireless transmitting end and a wireless receiving end. The alarm information processing unit includes a detection signal processing circuit, an image processing module, an alarm signal output circuit, and an acousto-optic alarm device. The monitoring terminal includes a PC client and a mobile phone client. The security monitoring system and monitoring method can solve the problems of a security monitoring system in the prior art, and meet the requirements of an intelligent monitoring system.

The invention discloses a smoke-sensitive fire detector auto-calibrating device, relating to a smoke-sensitive sensor calibrating device, mainly comprising a controller, a smoke box, a wind speed controller, a consistence measuring device, a smoke-adding controller, a smoke stirrer, an observation window, an air duct and a smoke exhaust device, further comprising a detector car. The detector car is arranged in the smoke box and is used for detecting alarm threshold of a detector. The controller and the smoke box are electrically connected, communicate signals and information with the wind speed controller, the consistence measuring device, the smoke-adding controller and the smoke stirrer, and are simultaneously communicated with the detector on the detector car so as to receive a consistence signal of the consistence measuring device and transmitting calibrating information. The invention has the advantages that although the consistency of sensor sensitivities of the detector is different, the consistency of the detectors calibrated by the auto-calibrating device is very high, each detector can pass through the test, the product rework situation is prevented, and the production efficiency is improved.

The invention relates to a fire-fighting evacuation system and an evacuation method thereof. The system comprises fire detectors, portable positioning devices and a server. The fire detectors are arranged in a building, and the position of the building on fire and a specific fire source position can be obtained via information of the fire detectors when outbreak of fire in the building is judged. Meanwhile, position information of portable positioning device carriers in the building on fire is acquired, and an optimal evacuation path for the portable positioning device carriers can be calculated according to information of the building on fire, the position information of the portable positioning device carriers, fire source position information and fire-fighting channel information. The fire source position can be effectively avoided by the optimal evacuation path, the nearest or safest fire-fighting channel and safety exit to the portable positioning device carriers can be rapidly found, and the optimal evacuation path is the customized optimal evacuation path for the portable positioning device carriers so that the fire-fighting evacuation system and the evacuation method thereof are high in evacuation efficiency and safe.

A method and apparatus are provided for setting up a fire alarm system. The method includes the steps of coupling a user interface to a wireless fire detection system having a wireless gateway and a plurality of wireless fire detectors, receiving a selection through the user interface of a wireless transmission parameter used in transmitting messages between the wireless gateway and the plurality of wireless fire detectors, determining a latency time value associated with use of the received selection of the wireless transmission parameter in the transmission of messages between the wireless gateway and the plurality of fire detectors, displaying the calculated latency time value on the user interface and changing an operating mode of the plurality of wireless fire detection devices in accordance with the received selection. In addition to latency, the fire alarm system may receive a selection and determine the battery life and sensor/output device capacity that is possible and display these parameters for the benefit of a user.

The invention provides a comprehensive detection simulation experiment device for fire detection performance. The comprehensive detection simulation experiment device comprises an experiment table body (1), a matched simulation generation device, a measuring and controlling system and a fume extractor (20). The experiment device has a conventional fire detection performance detection function, can be combined according to conditions of detectors and characteristics of suitable places, is capable of overcoming the defects that existing devices do not take fume distribution characteristics and dust, water mist and wind speed changes into consideration and detection performance is affected by the positions of the detectors, and has the advantages of multiple functions, simple structure, high reliability, convenience in assembly and disassembly and low cost. The device is capable of performing various experiments of small-size standard fire experiments, flow equalizing fume simulation, practical application environment simulation and the like, and influences on fire detection performance by the positions of fire detectors relative to a fire source are considered. Enough detected fire detector mounting threaded holes are formed in a ceiling of a firing chamber, so that positions of the fire detectors in the firing chamber are changed conveniently according to practical situations of the fire detectors.