983 results about "Fire accident" patented technology

The invention discloses an indoor emergent abnormal event alarm system. The indoor emergent abnormal event alarm system comprises a video collecting module, an audio collecting module, a heat releasing infrared detection module, a vibration detection module, a glass breaking detection module, a door magnet detection module, a signal processing module, a wireless receiving module, an alarm sending module, an alarm linkage module, a voice output module, an infrared light-emitting diode (LED) light-compensating lamp module, and a power management module. The indoor emergent abnormal event alarm system conducts real-time dynamic detection analysis on emergent abnormal events that people fall down and lay on the floor for a long time, illegal break-in, theft, violent physical confrontation, fire accidents, coal gas leakage, explosion and the like in an indoor deployed and controlled area, sends intuitive alarm signals which take audios, videos or pictures as carriers in a wire communication mode or a wireless communication mode to alarm receiving and processing terminals such as a mobile phone or a computer of a householder and residential area monitoring computers in the first time, associates with the audible and visual alarm device to give an alarm, and receives voice output of receiving terminal devices to achieve voice talkback.

The invention discloses a fire linking control system applied to urban rail transit and a method. The fire linking control system comprises a main control system, a fire automatic alarm system, an electromechanical device monitoring system, a communication system, an intelligent low-voltage system, a ventilating air conditioning system and the like; the fire automatic alarm system is used for realizing fire detection and alarming, judging whether a fire accident arises and the detailed location of the fire accident; the fire automatic alarm system selects a corresponding fire mode instruction according to environmental control requirements provided by the ventilating air conditioning system and different fire accident locations; the electromechanical device monitoring system receives and analyzes the fire mode instruction and drives fire fighting apparatuses to operate according to a predefined mode so as to execute a corresponding fire fighting mode. The fire linking control system can greatly increase the coordination linkage capability of fire fighting, save the response time of fire fighting, imorove fire fighting efficiency and enhance the reliability and stability of a fire fighting system.

The present invention relates to an electronic cigarette with prolonged heating protection and a protection method of the same. The electronic cigarette can avoid generating peculiar smell due to long time heating processes, and can also avoid scald injuries and fire accidents caused by too high temperatures.

The invention discloses an on-site hot smoke test equipment and method for subway stations and inter-station tunnels. The system comprises ignition source systems, data acquisition systems, and a data processing system, wherein the ignition source systems are arranged in the subway stations and the tunnels to simulate a fire scene; the data acquisition systems are arranged in the platforms and the concourses of the subway stations, the station tunnels and the inter-station tunnel to collect the following information in the fire scene, such as temperatures, gas concentrations, gas velocities, images, thermal images, smoke heights and system linked time; and the data processing system is connected with the data acquisition systems and processes the data information collected by the data acquisition systems, obtains the evaluation indicative data about work effects, reliability and linkage conditions of the fire detection and warning systems, the ventilation and smoke removal systems, the emergency lighting systems, the exit passageways and the exit signs in the platforms and the concourses of the subway stations and the inter-station tunnels, and judges whether the individual fire fighting systems can ensure the safe escape of passengers in the fire accident. The on-site hot smoke test equipment and method can provide reasonable and correct scientific evidences for subway construction, system debugging and transport safety.

A water-atomizing spray head for extinguishing fire accident in 3D space is composed of a main body with water inlet and outlet, 1-9 nozzle holders arranged radically on said main body, 1-9 water-spraying channels for said 1-9 nozzle holders (one for one) and consisting sequentially screwed core, nozzle and flow guide plate, and a net filter at the water outlet of said main body.

An elevation type safety shutter belongs to the field of building doors and windows and consists of a window frame with a hollow cavity, a movable fence and a shutter leaf (77). A self-locked elevation type device on the fence, a self-locked manual and a power-driven leaf revolving device, a firm and beautiful fence rod (76) and hinge, and a lock-up device are designed through separating the fence from the shutter leaf (77). The safety shutter has the functions of theft proof, rain proof, ventilation, privacy protection, noise reduction, sun shading and energy saving, indoor light adjusting and surviving in a fire accident and the like; besides, after furling, the fence leaf occupies little space of the window upper part, thus leading the elevation type safety shutter to become a construction piece necessary for each family and a powerful instrument for improving city view.

The invention discloses an aerogel waterproof and heat-insulating coating as well as a preparation method thereof. The coating with fireproof and heat-insulating properties is prepared by adding aerogel powder and ceramic powder which are subjected to hydrophilic modification as well as adding aids and fillers according to different formula proportions, and the coating is prepared by utilizing theproperty characteristic of a three-dimensional network structure of the aerogel, so that the defect that the existing coating is only fireproof and is not heat-insulating is solved and the coating has the heat-insulating characteristic. Meanwhile, nanometer ceramic powder is added in the coating, the nanometer ceramic powder in the coating is heated to be ceramic, one expanded ceramic film is formed on the surface of a base material, one air layer is arranged between the film and the base material, contact between flame and the surface of a vehicle metal material product is isolated, and heatis prevented from being transmitted to the surface of the metal by depending on the low heat-conducting coefficient characteristic of the aerogel in the coating. Through fireproof and heat-insulatingsynergistic effect, good barrier effect on heat and flame is guaranteed to be achieved no matter normal use of the metal part in the vehicle or occurrence of extreme fire accidents, and the fireproofproperty of the coating is enhanced.

The invention relates to a subway station fire hazard simulation experiment platform, provides a subway station interior fire hazard simulation experiment platform and relates to subway fire hazard accident simulation equipment which is used to carry out experiment research on a generation and development mechanism of the subway station fire hazard accident, a control, prevention and treatment technology. The platform comprises a large-scale subway station entity model, a fire source system, a ventilation and smoke exhaust system, a fire hazard detection alarm system, a experiment measurement acquisition system and a data analysis system. The large-scale subway station entity model is made of a fireproof material and is a multi-layer building structure which comprises an interval tunnel, a platform, a station hall, an equipment room and the like. The whole entity model can be dismounted and combined. The fire source system can simulate different fire hazard scenes and generate approximately real hot smoke of the fire hazard. A problem of being difficult to develop a field experiment research on the urban mass transit subway fire hazard accident can be solved by the experiment system platform. Three-dimensional experiment simulation of subway fire hazard accident of different station structures, such as underground, deeply burying, an elevated type, an island style, a side type, a central nave and the like.

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.

The invention discloses a comprehensive application method for integrating forest fire danger forecasting and ground fire point monitoring. The comprehensive application method for integrating the forest fire danger forecasting and the ground fire point monitoring comprises the steps that a forest fire danger class forecasting model is established; forest fire weather indexes are obtained by calculating; the forest fire weather index are divided to obtain forest fire danger classes; a satellite receiving system is adopted to receive polar orbit satellite data and pre-processes the polar orbit satellite data; on the basis of an MODIS fire disaster algorithm, a multiband brightness temperature value and a multiband reflectance value of the MODIS data are used for identifying an image; on the basis of a GIS technique, a forest fire danger class forecasting result and a ground fire point monitoring result are superimposed on an electrified wire netting output line and device and display a range of influence of a fire scene which can be intuitive analyzed. The comprehensive application method for integrating forest fire danger forecasting and ground fire point monitoring combines the forest fire danger class forecasting result and the ground fire point monitoring result with the electrified wire netting output line and device, the disposition efficiency of a forest fire accident is improved, and the monitoring range is wide.

The invention provides a risk evaluation method of fires and explosions at tank storage areas at petrochemical decks. The risk evaluation method comprises the following steps: establishing a risk evaluation index system of a tank storage area at a petrochemical deck, and confirming main risk factors; calculating the weight of each risk factor of the tank storage area at the petrochemical deck according to the risk evaluation index system so as to provide an acceptable risk criterion which is suitable for loading and unloading operations at the tank storage area at the petrochemical deck; selecting a fire accident probability calculating method for the tank storage area at the petrochemical deck; establishing a fire damage model according to accident consequences; confirming the frequency and the consequence of every assumed accident so as to obtain theoretical personal risk values; classifying acceptable risk levels of the tank storage area at the petrochemical deck based on the acceptable risk criterion. The risk evaluation method disclosed by the invention overcomes the subjectivity of the conventional level classification and is adopted for quantitative risk calculation and level classification on the actual risk management process of the tank storage area at the petrochemical deck, so that the efficiency of safety management is improved.

An intelligent elevator and its control method features that its intelligent management module can be connected with multiple devices, such as interphone, biologic characteristics recognizer (fingerprint or retina recognizer), entrance guard, fire accident alarm, speech recognizer and intelligent card reader As a result, it can only be used by authorized people.

A sliding board-type lifesaving facility for building with 24m in height is composed of ropes, curved slide way made of reelable, antiwear and flexible material, ropes winder, and supporting frame. It can be used for fire accident.

The invention discloses an ink for oft package intaglio printing and a preparation method thereof. The ink contains the following components in parts by weight: 20 to 25 parts of color paste, 30 to 60 parts of binder resin, 10 to 30 parts of water, 1 to 5 parts of bactericide and 1 to 5 parts of liquid wax, wherein the color paste contains the following components in parts by weight: 10 to 40 parts of water, 20 to 60 parts of water-based pigment, 1 to 5 parts of dispersant, 1 to 5 parts of defoaming agent and 10 to 30 parts of grinding-type resin. The ink causes no pollution and injury to environment and the body of an operating worker in the processes of production and use, ensures that fire accident caused by short circuit or static electricity can be avoided, has the characteristics ofexcellent transfer property, good color reproducibility and outstanding refreezing property, and can be used when being refrozen at normal temperature within 3 hours after being frozen; the resultantprinting food package has no residual organic solvent and conforms to the demands of various countries on soft food package; the using cost is low, and the economical benefit is prominent.

A air suction type laser image method for detecting fire accient by sensing smoke includes such stesp as pumping smoke or aerosol in smoke detecting chamber, taking the scatter image of smoke particles under the action of laser by CCD camera, A / D convertion, analyzing by image signal processor to obtain relative parameters, classifying and judging by neuro network, and driving the alarm device if it is the smoke of fire accident. Its advantages are high sensitivity, high speed, and reliability.

The invention provides a socket with good safety and relates to the field of wall sockets. The socket with good safety comprises a plastic housing; the front of the plastic housing is provided with plugholes, the front of the plastic housing is provided with a round hole between the two plugholes, the inner wall of the plastic housing is fixedly connected with an insulating seat behind the plugholes, and the front of the insulating seat is provided with metal contact plates respectively behind the two plugholes. The socket with good safety has the advantages that heat transfer expanders can expand upon heating to push transmission rods in motion and contact press switches, an electromagnetic starts operating after the press switches are electrified, the electromagnet and a permanent magnetcan repel each other as like poles to push gas in cylinder II to discharge, the gas in the cylinder II is discharged into a pneumatic telescopic rod, an ejector rod can be pushed out of the round hole, a pin inserted into the socket can be ejected out to separate from the socket, power utilization safety is effectively guaranteed, and fire accidents are fewer.

The invention relates to an intelligent monitoring system of a distribution network switch cabinet. The system adopts an embedded installation technology to carry out intelligent monitoring on operation state of equipment in a switch station on the basis of an ultra-high-frequency partial discharge detection technology and a temperature monitoring technology. The problem of difficulty in real-time monitoring on the environment temperature and the equipment insulation state in the switch station cabinet is effectively solved. Equipment insulation state data is transmitted in real time; the partial discharge of a cable terminal, a busbar, a switch on-off device and the like in the switch cabinet caused by insulation defects or insulation aging can be monitored in real time; the development trend and the operation state of the insulation defects in a distribution network cabinet are monitored in real time; the insulation defects or faults which can become more severe can be discovered and warned in advance. When the system is put into operation, the safety operation level and the intelligent management level of the switch station can be greatly improved; serious power failures and fire accidents caused by the insulation defects of the equipment can be effectively avoided, and periodic detection is changed to be condition overhaul. The safety reliability and the automation degree of power system operation are improved.

A three-wavelength full-scatter laser smoke-sensing method for detecting fire accident includes such steps as pumping smoke or aerosol in smoke detecting chamber, emitting three laser beams with different wavelengthes in said chamber by laser device, attenuating them by smoke, received by photoelectric receiver to output electric signals, amplifying, A / D convertion, computer analysis to obtain their extinction coefficient ratio, analyzing by neuron network to recognize smoke, and driving alarm device if it is "smoke of fire accident".

The invention relates to a method for monitoring the environment of a textile workshop. According to the method, a system for monitoring the environment of the textile workshop comprises a temperature sensor set, a humidity sensor set, a dust detection instrument set, a noise detection instrument set, an infrared flame detector set and a processor. The processor is respectively connected with the temperature sensor set, the humidity sensor set, the dust detection instrument set, the noise detection instrument set and the infrared flame detector set. Environment optimization operation or environment alarming operation is conducted according to detection results of the temperature sensor set, the humidity sensor set, the dust detection instrument set, the noise detection instrument set and the infrared flame detector set. Real-time monitoring of multiple parameters of the whole range of the textile workshop is achieved, the intelligent degree of the system for monitoring the environment of the textile workshop is improved, and therefore health of textile workers working in the textile workshop and the yield of textile products are guaranteed and noise pollution and fire accidents in the textile workshop are avoided.

In a preferred embodiment, the present invention relates to a hand-held or “gun / firearm mounted” electromagnetic transceiver acting as a pulsed RADAR (i.e., “Radio Detection and Ranging”) or LIDAR (i.e., “Light Detection and Ranging”) device that can detect the presence of one or many passive retro-reflectors attached to or worn by people or objects that are close or distant in a preferred angle of detection. In a preferred embodiment this device could be mounted on a gun and would alert the user if a retro-reflector is detected in the direction of fire. Additional sensors can be used to change the effective field of detection, to save energy or to provide multiple parallel sensors for these and other reasons.

The invention discloses a network intelligent open fire detector control system which mainly comprises an open fire detector and a wireless gateway (base station) and so on. The core module group of the open fire detector comprises a central processor and a wireless module group unit and an ultraviolet flame detection system which are connected with the central processor. According to the system, the wireless module group unit performs data communication with the wireless gateway (base station), the wireless gateway (base station) is connected with a business engine, the business engine performs data interaction with a cloud side data server, and the cloud side data server is connected with multiple types of client sides through the network. With application of the system, the disadvantages that the ultraviolet flame detector has poor sensitivity and small detection distance and have no resistance to lightning interference and has certain rate of false alarm can be solved, and remote command deployment can be realized in case of emergency event so that unnecessary property loss can be reduced, and the powerful guarantee can be provided for the fire fighting force to quickly and effectively handle various fire accidents.

The invention discloses an intelligent smoke detecting and early warning method. The intelligent smoke detecting and early warning method includes the following steps of monitoring monitored objects in an area and collecting video data by using a binocular system composed of a first image acquisition device and a second image acquisition device, detecting a smoke and fire area and the gas leakage situation according to the video data, and determining the smoke and fire area and the gas leakage point and giving out an alarm with the visible light and infrared image fusion technology. An effective on-line real-time intelligent detecting and early warning method for public pipe galleries of a chemical industrial park is provided by combining the image processing technology and the pattern recognition technology. Through the network technology and the system design, all the public pipe galleries of the whole chemical industrial park can be monitored on line in real time and an alarm can be given out timely when gas leakages and smoke and fire accidents happen.

An equipment for preventing and extinguishing the fire accident in an enclosed space is composed of a nitrogen-enriching unit which can use a gas separating membrane to lower the oxygen concentration and release nitrogen gas to maintain a predefined nitrogen concentration, a unit for circulating the nitrogen-enriched air, an air stirrer, an oxygen sensor, a pressure balancer, an alarm for fire accident, an oxygen concentration controller, and an oxygen-enriched air deluting unit.

The invention relates to the technical field of traffic detection and discloses a method for detecting a fire accident on an expressway or in a tunnel based on a video detection technology. The method comprises the following steps: extracting a picture from an obtained video according to a preset frame rate; utilizing the obtained picture to establish a tunnel background model; extracting a foreground target image from the picture with a background differentiating method; dividing the picture into a background part and a foreground part, and respectively updating the background part and the foreground part in different updating rates; analyzing the foreground target of the image in a detection period, and judging whether a suspected static target exists or not according to time sequence information; and if the suspected static target exists, determining a suspected flame region in combination with the moving and static features of flames, and finally analyzing the suspected flame region of a sequentially extracted image according to flame judging rules and judging whether the fire accident exists or not. The method has the advantages of simple detection algorithm, small calculated amount, capability of shortening processing time, capability of improving detection efficiency, and capability of reducing the influence of the complicated scenic illumination condition of the tunnel on fire detection.

The invention discloses an overheating air-burn preventing device of a gas stove and a preventing method. The overheating air-burn preventing device comprises a temperature sensor, a temperature sensor control circuit, a singlechip microprocessor, a main solenoid valve and a main solenoid valve control circuit, wherein the temperature sensor is used for detecting the temperature of the bottom of a cooker; the main solenoid valve and the main solenoid valve control circuit are arranged on a main gas pipe; in addition to the traditional low-temperature flameout defensive function, the device adds intelligent high temperature protection, has sensitive sense to the cooker temperature, prevents the air burn by overheating detection and overheating curve judgment so as to achieve the effect of preventing the air burn of majority of cookers, thereby effectively preventing fire accidents caused by abnormal high temperature of the air burn of the cooker, and protecting family property and personal safety all the way. The invention has high precision, simple and stable system and relative low cost and can meet the requirement of people on using the gas stove.

The invention discloses a method for setting up a secondary lining concrete crushing strength curve after a tunnel fire. According to the method, a residual crushing strength calculation formula is obtained through briquette manufacturing, briquette maintaining, high-temperature testing, ultrasonic testing, rebound testing, pressure testing and test data reduction and analysis, and the concrete crushing strength curve after the tunnel fire is set up. During actual detection, only one face is available for detection in a tunnel, and a flat measuring method is more suitable for single-face detection compared with an opposite measuring method. Opposite measuring sound velocity is adopted in a strength measuring formula, actual flat measuring sound velocity needs to be used after being corrected, and the opposite measuring sound velocity and the flat measuring sound velocity have a good linear relation; and the actually measured flat measuring sound velocity is substituted into the strength measuring formula after being corrected, and the concrete residual crushing strength can be determined. Meanwhile, by means of the flat measuring method, errors caused by inaccurate centering of a transmit-receiving probe in the opposite measuring method can be reduced. The method has important practical significance on fast detection of the damage degree of a lining structure after the tunnel fire accident and damage grade reasonable judgment.

The invention discloses a garbage bin monitoring system and method. The monitoring system includes a garbage bin monitoring device, a user mobile terminal and a cloud server platform. The garbage binmonitoring device monitors the garbage heap height, garbage weight, temperature and humidity, smoke, bin cover, dumping and other states of a garbage bin, and sends the state information to the cloudserver platform through a wireless communication module. The cloud server platform sends the garbage bin information to the user mobile terminal of an assigned person according to the specific situation. The assigned person carries out garbage clearance and transportation, fault handling and fire fighting according to the current information. Because tasks such as garbage clearance and transportation, garbage bin inspection and garbage bin maintenance are assigned to specific workers for on-site treatment, the inspection workload and manpower cost of sanitation workers are reduced, the timeliness of garbage clearance and transportation is improved, and the harmfulness of fire accidents caused by combustion in garbage bins is reduced.

The invention relates to the field of fire protection, and specifically relates to an intelligent wireless fire detection alarm system. The system comprises data acquisition devices used for acquiring the environment parameters of an installation site, a server used for storing, analyzing and processing data, an alarm used for sounding an alarm at the installation site, remote control terminals used for remote control, and a production management platform used for background management. The data acquisition devices and the alarm are installed on the site. Each data acquisition device comprises a temperature sensor used for detecting temperature, a smoke sensor used for detecting the concentration of smoke, and a combustible gas sensor used for detecting the concentration of combustible gas, wherein the temperature sensor, the smoke sensor and the combustible gas sensor are integrated as a whole. Each integrated data acquisition device is equipped with a bar code or a two-dimensional code. The data acquisition devices, the server, the alarm, the remote control terminals and the production management platform are connected wirelessly. With the intelligent wireless fire detection alarm system, remote control is realized, and measures can be taken to prevent fire accidents. The system has a high degree of intelligence.

The invention provides a method and a device for assessing levels of fire interlock alarming in a ship cabin. The method comprises the following steps that: 1) a central fire alarm control unit acquires fire situation information obtained by temperature sensing detectors and smoke sensing detectors which are in all ship cabins and adjacent to the ship cabin in which fire breaks out; 2) the central fire alarm control unit reads danger level information of the fire in the ship cabin; 3) the fire situation information obtained by the temperature sensing detectors and the smoke sensing detectors and the danger level information of the fire in the ship cabin are subjected to normalized pre-processing; and 4) processed data are sent to a fuzzy reasoning module to be subjected to fuzzy reasoning, so that a level assessment result of the fire interlock alarming in the ship cabin is obtained. On the basis of no increase of additional detection equipment and no addition of cost, information data from different types of detectors in all the ship cabins and danger level information data of the fire are analyzed and processed by using a fuzzy reasoning system; the alarming level information in each ship cabin is rapidly and correctly given, the correctness, the leading and the comprehensiveness of the interlock alarming of the ship cabin can be realized as far as possible, and serious fire accidents caused by omission of the fire situation information of the ship cabin are reduced.

The invention relates to a lean-burn gas duel-fuel spark-ignition-type internal combustion engine based on EGR (Exhaust Gas Recirculation) system and a control method, and can solve the problems of unstable combustion, high NOx emission and the like of a gas fuel spark-ignition-type internal combustion engine caused during lean burn. Based on the in-fuel-gas-cylinder direct injection and inlet duct spray combined duel-fuel spark-ignition-type internal combustion engine technology and the EGR technology, the internal combustion engine and the control method ensure that the duel-fuel spark-ignition-type internal combustion engine can realize stable and efficient lean burn and reduce the phenomena of cyclical variation and fire accident at a high compression ratio; meanwhile, part of exhaust gas is re-guided into the cylinder to participate in combustion, the EGR ratio is changed according to the requirements of working conditions, the in-cylinder combustion temperature is lowered, and the generation of NOx is inhibited; and besides, as lean burn and EGR co-exist, the opening degree of a throttle valve can be increased and the pumping loss is reduced. In conclusion, reduction of energy consumption and super-low emission of pollutants can be fundamentally realized.