247 results about "Accident prevention" patented technology

The present invention relates to a vehicle accident prevention apparatus comprising a camera unit which photographs an image of a front view, an image recognition unit which processes the image of the front view to detect the registration number of a vehicle driving in front of the vehicle from a license plate of the vehicle driving in front of the vehicle, a wireless communication unit which receives accident prevention information containing an identifier and speed of the vehicle driving in front of the vehicle, a speed sensing unit which senses the speed of the vehicle equipped with the apparatus of the present invention, and a determining and control unit which identifies the vehicle driving in front of the vehicle by matching the registration number and the identifier of the vehicle driving in front of the vehicle, and generates a control signal for preventing vehicle accident by performing a speed comparison.

An apparatus that prevents motorists from crossing railroad tracks, when the warning gates are down during approaching of a train consists, of a plurality of tire-piercing cogs which are retracted from the ground when the railroad crossing gate is closed. The cogs are arranged across the entire width of the automobile road in order to prevent a motorist from going around the closed gate through the oncoming traffic lane. The piercing cogs are interlocked with a warning visual and/or sound signal which is activated if the vehicle went onto the railroad tracks and stuck on the rails after smashing the closed road gate arm. The cog drive mechanism is located below the ground level, and when the gate is open for normal traffic through the railroad crossing, the cogs are turned into position in which their back surfaces are arranged in flush with the ground level for smooth passage of the vehicles. The power station of the cog drive mechanism is located in a small pit between the lanes of the opposite-direction traffic.

The invention discloses a vehicle emergency acceleration self-protection system which comprises a forward and backward environment sensing module, an information fusion module, a decision making and control module and an execution module. By the adoption of the system, the intelligence of a vehicle is improved, the forward and backward environment sensing module can obtain environment informationaround the vehicle, in combination with prediction of the current and future operation attitudes of the own vehicle, sensing of the current and future environment information around the vehicle is completed, the rear vehicle rear-end collision preventing early warning accuracy is effectively improved, the reliability of vehicle self-protection decision making and decision control is improved, traffic accidents are avoided or the occurrence rate of the traffic accidents is reduced, the personal safety and property safety of a driver are guaranteed, and meanwhile, an AEA system is an important supplement to an AEB system in the rear-end collision accident prevention process and is a novel active safety system.

A vehicle with an accident prevention system is disclosed. The vehicle also has a foot brake for stopping the vehicle. The system includes a sensor arrangement for sensing an object behind a rear end of the vehicle that generates an object recognition signal when it senses an object within range behind the vehicle. The sensor arrangement includes passive IR sensors or reflected pulse sensors such as sonar or radar sensors on the rear end. A controller generates an accident prevention response signal on receiving an object recognition signal from the sensor arrangement. A brake applicator is operatively coupled to the brake to stop the vehicle when the controller generates a response signal. Conveniently the system includes an alarm for sounding an alarm signal. A method for preventing an accident where a vehicle which is reversing at low speed collides with a person is also disclosed.

The embodiment of the invention discloses a method and a device for data mining of a road traffic accident based on an association rule, which relate to the field of communication. In order to realize effective analysis and counting correlative with occurring condition factors of the accident and serve the jobs of accident prevention, treatment, decision and the like, the invention provides a technical scheme of: acquiring historical data in a prescribed time range and a prescribed road section range from the historical data of the road traffic accident as association rule mined data; determining the attribute of the traffic accident of the association rule mined data; acquiring a frequent item set according to the association rule mined data, the attribute of the traffic accident and the minimum support; and acquiring an accident association rule according to the frequent item set and the minimum degree of confidence. The method and the device are suitable for real-time dynamic traffic information services.

The invention discloses a method to on-line monitor the insulated state of power cable metal shield shelves and its equipment, based on the single conductor cable metal circulation model, the method compute relation formula is as follows: Sensors will be packaged on the power cable metal shield shelves and collect circulation significant change signal, the signals are processed by the signal conditioning which is composes of sampling resistor, circuit protection, filtering circuit, after preliminary processing of signals, the signals sent to acquisition card, complete the signal acquisition, and then the data into PC, data is stored and computed by PC, monitoring results of the insulated state of power cable metal shield shelves base on the calculation of circulation relations of the cable metal shield shelves. This invention with less judgment error, no cable damage, through accident prevention of power cables to extend life of power cables, it assure the purpose safe and stable running of power cables.

The invention provides a method for controlling a system for supervising operation of special self-wheel operation equipment. The method is based on a multilevel supervision system of the special self-wheel operation equipment operation supervision system using corresponding management departments of a railway bureau, a railway section and a railway region as a responsibility organ, carries out a uniform and regulative principle, adopts a multilevel monitoring mode, strictly compels and assists target monitoring, implements a people-oriented and intelligence-integrated safety work monitoring mode and a supervision mode for the operation of special self-wheel operation equipment, defines the operation monitoring parameters of the special wheel operation equipment, determines a typical accident type, strengthens the function of intelligent accident prevention, enhances the monitoring and recording protection, exerts a wireless communication network and GPS positioning of a supervising device to realize intelligent and integrated supervision of the system and monitoring of the operating position and the state of each special self-wheel operation equipment, displays the operation supervising state, rapidly transfers original record data and analysis so that the system has perfect integrated supervising function, remarkably promotes the safety supervision and emergent processing capacity on operation of special wheel operation equipment all the way, prevents the accident of operation safety more effectively, provides powerful guarantee for a whole line project of railway and operation safety of the maintained vehicles. The method is suitable for various supervision systems of the special self-wheel operation equipment.

The invention relates to a high-alloy centrifugal compounding steelcasting support roll and a processing technique thereof. The high-alloy centrifugal compounding steelcasting support roll comprises the following chemical substances: a working layer containing 0.4-0.5 of C, 0.3-0.6 of Si, 0.4-0.8 of Mn, less than or equal to 0.035 of P, less than or equal to 0.03 of S, 3.5-4.5 of Cr, 0.2-1.0 of Ni and 0.2-0.5 of Mo, and the balance steel and impurities by weight; a core part containing 3.0-3.6 of C, 1.7-2.7 of Si, 0.2-1.0 of Mn, less than or equal to 0.08 of P, less than or equal to 0.01 of S, 0.01-0.04 of Re, 0.03-0.08 of Mg, less than or equal to 1.0 of Cr, less than or equal to 1.0 of Ni, less than or equal to 1.0of Mo, less than or equal to 1.0 of Cu, less than or equal to1.0 of V, and the balance iron and impurities by weight. Furthermore, the working layer is formed by horizontal type centrifugal pouring, the core part is formed by pouring, and the heat treatment is carried out in such a way that a trolley type high-temperature resistance furnace to heat a rough machining support roll in an austenite way and preserve the heat of the rough machining support roll. The invention has high abrasion resistance, high accident prevention and high working production ratio.

A computerized method of computing the Voronoi diagram has applications including communications networks, robotics, three-dimensional networks, materials science, searching image processing, data clustering, data compression, control of a groups of methods for image processing and the like, design of electronic circuits, geographic information systems, solutions of the efficient location problem, face recognition, mesh generation and re-meshing, curve and surface generation/reconstruction, solid modeling, collision detection, controlling motion of vehicles, navigation, accident prevention, data clustering and data processing, proximity operations, nearest neighbor search, numerical simulations, weather prediction, analyzing and modeling proteins and other biological structures, designing drugs, finding shortest paths, pattern recognition and as an artistic tool. The Voronoi diagram is a decomposed region X made into cells, the decomposition being induced by a set of generators (P_k)_k-K, and a distance function, and involves finding for each generator P_k a cell, which is a set of all the points in X satisfying the condition that the distance to the current generator P=P_k is not greater than the distance thereof to the union A of the other generators, The method comprising: for each generator, and for each point p in this generator, selecting a set of directions, then for each direction recursively testing a ray in that direction, until a certain interval on the ray is of length less than or equal to a given error parameter. A point corresponding to the interval on the ray is then selected as an end point, the cells are defined from the end points, thus forming the Voronoi diagram.

The invention discloses an intelligent family health monitoring robot. The intelligent family health monitoring robot comprises a core embedding module, a moving device, a sensing device, a remote service platform and a remote connecting terminal; the core embedding module comprises a wireless communication module, a data processing module, a command controller, a map building and positioning module and a storage module; and the wireless communication module can be connected with a family wireless router through WLAN or connected with a network through a 3G/4G/5G wireless communication protocol to realize information interaction with the remote connecting terminal and the remote service platform. An information processing system realizes real-time monitoring of the health conditions of family members, can preferably prevent some emergencies incapable of being timely discovered and treated, can conveniently and timely know the health conditions of monitored persons through video monitoring, and solves some unnecessary diseases caused by delayed caring or discovery to prevent accidents.

The invention provides an intelligent device for detecting on-vehicle roll-over and remotely asking for help. The invention adopts a proposal that an inclination-angle sensor and a temperature sensor are arranged on a vehicle and are electrically connected with a control chip respectively; the control chip is connected with a crystal oscillator circuit; the control chip is connected with a main controller through an SPI bus; the main controller is connected with a keyboard, a buzzer and an LED display screen through a wire, an amplification circuit and a display-screen interface respectively; the main controller is electrically connected with a GPS module, a GPRS module and a memory circuit respectively; and the device can display early-warning signals when the climbing gradient of the vehicle is more than 30 degrees and less than 45 degrees, automatically alarm when the climbing gradient of the vehicle is more than 45 degrees, use the GPS module to measure latitude and longitude to determine accident location and use the GPRS module to contact a rescue center. The device overcomes the defect that the prior art delays the treatment time of the injured and increases death toll as the prior art can only ask for help through mobile phones of survivors and organize search-rescue personnel to look for the accident location, and applies to the accident prevention and accident rescue of various vehicles.

A vehicle safety system that provides a clear view of blind spots, approaching motor vehicles in oncoming and peripheral lanes when attempting to pass on a two-lane highway consists of a pair of side mirror-mounted cameras, a split viewing screen/monitor, a plurality of controls, and a microcontroller. The visual data received from the pair of side mirror-mounted cameras is displayed on the split viewing screen/monitor. Thus, the user can view oncoming motor vehicles. Preferably, the split viewing screen/monitor is mounted adjacent to a rear-view mirror of a motor vehicle. The plurality of controls allows the user to control the content displayed on the split viewing screen/monitor. When front-facing cameras and rear-facing cameras are available, the user is provided with information regarding obstacles surrounding the motor vehicle. The pair of front-facing cameras and the pair of rear-facing cameras are especially beneficial when backing out of parking spaces and driving through intersections.

The present invention provides an H-bridge driving circuit detection device and method in an EPS system. The detection device can detect the phase current and the bus current of a motor through a first current sensor S1 and a second current sensor S2 to effectively avoid the same direction instant locking and non-planning assistance of the motor, realize the accident prevention and accident avoiding and improve the safety and the operability of the system. The H-bridge driving circuit detection device in the EPS system can collect the current value of a driving circuit in the motor operation state and the follow current state in real time to improve the measurement and control precision, allow the motor to provide stable and effective assistance in different work conditions and ensure the vehicles to perform light and flexible turning at the low speed, have enough road feel for turning at the high speed and have good tracking performance and operation stability. The present invention further provides an H-bridge driving circuit detection method in the EPS system based on the H-bridge driving circuit detection device. The H-bridge driving circuit detection device and method in the EPS system realize the detection of the H-bridge driving circuit.

The invention belongs to the technical field of inflammable gas accident prevention, and particularly relates to inflammable gas testing methods. The technical scheme includes that a system for testing critical energy of detonation formed by direct initiation comprises an initiation device (1), an oscilloscope and an ignition circuit, wherein the oscilloscope is connected with output of a pressure sensor (5) of the initiation device, and the ignition circuit is connected to the initiation device (1) through a triggering switch. The initiation device is applicable to measurement of initial pressure ranging from 1kPa to 20atm so as to be wide in testing pressure range, and is applicable to measurement of the critical energy formed by direct initiation of mixed gases of all gaseous fuel and oxygen or air. Detonation sensitiveness of various substances can be judged by measuring the critical energy of detonation formed by direct initiation of various inflammable mixed gases, so that a dangerous source can be controlled, and damage of detonation to life safety and property loss is avoided or reduced. The system is simple in structure, low in cost, easy in operation and accurate in measurement result.

The method of filling nitrogen and controlling oxygen to prevent and control coal mine gas accidents is to set up an isolation room under the mine to seal off the mining space with gas, so as to isolate the oxygen of the outside air from the mining space; set up a gas monitoring and monitoring system to monitor the concentration of nitrogen and oxygen Management, guide the mixed gas in the mining space to circulate the air flow, and use the gas monitoring and monitoring system to manage the oxygen concentration of the mixed gas in the mining space. If the oxygen concentration exceeds 5%, an early warning signal will be issued, and the automatic control system will automatically cut off the power supply when the oxygen concentration reaches or exceeds 8%. ;Set up a set of nitrogen filling pipeline system and gas drainage pipeline system in the mining operation space. When the oxygen concentration of a certain section of roadway reaches the warning concentration, start the nitrogen filling system and gas drainage pipeline system to replace the gas in the overrun area, so that the oxygen concentration Reduce to a safe value range; install an automatic temperature adjustment device in the isolation room, and adjust the temperature difference between the isolation room and the outside air tunnel by 5°C; it can effectively prevent and control gas accidents.

The invention discloses an expressway secondary accident prevention and early warning system and a control method. The system comprises a main control chip arranged on a vehicle, and a GPS (Global Positioning System) positioning module, a voice playing module, an image acquisition module, an alarming module, a sensing signal acquisition module and a wireless transmission module which are connectedwith the main control chip; an operation state of the vehicle is acquired by utilizing the sensing signal acquisition module; when the vehicle has faults or traffic accidents, vehicle information issent to the main control chip through the sensing signal acquisition module to trigger the main control chip to connect vehicle position information to a database center through the wireless transmission module by utilizing the GPS positioning module; the database center is used for carrying out early warning on the vehicle which moves on a road section; early warning promotion is carried out through the voice playing module and the alarming module on the moving vehicle, so that rapid and accurate identification of expressway accidents can be realized, the vehicle is prevented from secondary accidents, the safety of the vehicle and a driver are ensured and the occurrence rate of the expressway secondary accidents is ensured.

The invention discloses a transformer substation standard operation firming method which includes steps of operation order selection, identification verification, identification management, electric signing and the like. The transformer substation standard operation firming method is reasonable and capable of effectively improving misoperation prevention effect and achieving twice the result with half the effort in misoperation prevention. In addition, by the transformer substation standard operation firming method, 'technical prevention' measures are utilized fully to overcome defects of 'personal protection', field switching operation standardization, which is a big problem hard to solve for years, is controlled effectively and safely, accident prevention capacity is improved, and field violation and accident generation frequency are suppressed greatly. Accordingly, the transformer substation standard operation firming method has great direct economical benefit for enterprises and indirect social benefit.

The invention discloses an improved Mond process used for safety evaluation. The improved Mond process for safety evaluation includes steps of 1) acquiring safety information and identifying and classifying the acquired safety information, determining substitution events according to fault tree analyzing method, analyzing various reason events including basic events and non-basic events layer by layer and establishing a fault tree according to the analysis; 2) determining structure importance coefficient of each basic event and sequencing the structure importance of all the basic events from big to small; 3) determining 'suggest coefficient' range of the basic events by the Mond process during safety evaluation; and 4) determining value of 'adoption coefficient' within the given 'suggest coefficient' range, preferably taking high values of the large structure importance coefficients, and taking small values of the small structure importance coefficients. The purpose of realizing rationality of safety evaluation conclusion by means of science of safety evaluation is achieved, and actions on risk prediction and accident prevention from the safety evaluation can be effectively played.