147 results about "Potential accident" patented technology

Disclosed herein are systems and methods for detecting a potential collision between a plurality of vehicles and alerting the operator to the potential collision. If the operator fails to heed the alert, the system may also assume control of the vehicle until the dangerous situation is passed. In connection with these systems, each vehicle is equipped with a telematics system that defines a safe perimeter around the vehicle. The safe perimeter is constantly changed in response to the velocity and acceleration of the vehicle. The telematics system is in communication with the telematics systems of other vehicles in the vicinity and the systems exchange data about the current extent of their safe perimeters. If a telematics system detects the impingement of one of the other safe perimeters into its safe perimeter, the alert is triggered.

The invention belongs to the field of safety production and early warming emergency of construction of water conservancy and hydropower projects and relates to an Internet of Things framework type system and method for monitoring and early warning of major accident potential safety hazards of a water conservancy and hydropower project. According to the Internet of Things framework type system and method for monitoring and early warning of the major accident potential safety hazards of the water conservancy and hydropower project, information of the potential safety hazards which can cause a potential accident in the area of the water conservancy and hydropower project is recognized and positioned to determine the types and levels of the potential safety hazards, and judging of the types and levels of the potential safety hazards and information statistics are carried out; meanwhile, the geographic position, spatial position, dynamic change, state change and state prediction of monitoring points in the area are analyzed by combining with the historical information of the area, early warning information can be generated automatically after potential safety hazard information in the monitoring area is beyond a set alarm value, and comprehensive data information of the potential safety hazards in the area and early warning of the major accident potential safety hazards of the project are provided through communication transmission.

A navigation system includes a processing device programmed to receive, from an image capture device, at least one image of an environment of the host vehicle; determine, based on at least one driving policy, a navigational action for accomplishing a navigational goal of the host vehicle; analyze the at least one image to identify a target vehicle; test the navigational action against at least one accident liability rule for determining potential accident liability for the host vehicle relative to the target vehicle; if the test indicates that potential accident liability exists for the host vehicle if the navigational action is taken, then cause the host vehicle not to implement the navigational action; and if the test indicates that no accident liability would result for the host vehicle if the navigational action is taken, then cause the host vehicle to implement the navigational action.

The invention provides a hill descent control system of a pure electric vehicle and a control method of the hill descent control system. The hill descent control system comprises a vehicle signal unit, a hill descent unit, a vehicle control unit, an anti-lock braking system, a driving motor and an active brake unit. The vehicle signal unit, the hill descent unit and the anti-lock braking system are connected with the vehicle control unit. The vehicle control unit is connected to the driving motor through a motor controller. The vehicle control unit is also connected with the active brake unit. According to the hill descent control system, different slopes correspond to different vehicle speed intervals, and preferably the motor is used for generating power and recovering energy; especially down a slope along a long ramp, the burden of the braking system is relieved, and potential accidents caused by thermal failure due to an overheated brake are eliminated.

The invention discloses a method and a system for nuclear power equipment state monitoring. The method for nuclear power equipment state monitoring comprises the following steps of sending parameter request information to request real-time state parameters of nuclear power equipment, acquiring the real-time state parameters, carrying out the comparison between the real-time state parameters or a real-time state parameter value subjected to computer processing and a preset threshold value to determine if an alerting signal should be sent out, and storing the real-time state parameters or the real-time state parameter value subjected to the computer processing and the alerting signal in a database. The invention also provides the system for nuclear power equipment state monitoring. The method and the system have the advantages that 1, round-the-clock real-time monitoring of nuclear power station key equipment is realized and alerting information of corresponding equipment is obtained; and 2, a worker can carry out remote access and fast check real-time operation parameters of key equipment without carrying out in-site checking of parameter information in a master control chamber so that an alerting reason is analyzed timely or a potential equipment fault is found timely, and thus the precious time for solution of a real or potential accident is saved.

The invention relates to an antiskid control method for an aircraft brake and an aircraft brake system. An active control concept is adopted, and through combination of aircraft speeds during braking, and through consideration of the influence of lifting force for the high-speed aircraft, actual brake pressure is gradually increased along with the decelerating of the aircraft, dangers that at the beginning of brake, ground attachment coefficients are small, so that the aircraft skids, and even tyres can be exploded due to brake are avoided; besides, requirements for braking skills of a pilot are further reduced, overcoming of human factors is facilitated, and using safety of the aircraft at high speed is guaranteed; the braking pressure is gradually enlarged along with the decelerating of the aircraft, so that potential accident hazards existing in brake of the aircraft at high speed are solved, but also the operating frequency of antiskid control is reduced, and the braking efficiency is improved. The antiskid control method of the aircraft brake and the aircraft brake system disclosed by the invention are suitable for development of a new aircraft, and are suitable for refitting of active service aircraft types.

An accident liability tracking system includes a processing device programmed to receive, from an image capture device, an image representative of an environment of the host vehicle, to analyze the image to identify a target vehicle in the environment of the host vehicle, and determine one or more characteristics of a navigational state of the target vehicle. The device is further programmed to compare the characteristics of the navigational state of the target vehicle to at least one accident liability rule, store one or more values indicative of potential accident liability on the part of the identified target vehicle based on the comparison of the characteristics of the navigational state of the identified target vehicle to the at least one accident liability rule, and output the one or more values, after an accident between the host vehicle and a target vehicle, for determining liability for the accident.

The invention provides a leakage monitoring and positioning early-warning system in petrochemical industry and an establishment method thereof, relating to a device for prevention, inspection and position determination of gas leakage. The system comprises a host computer system, a central node, a routing node and a terminal node, wherein the software part in the host computer system comprises a geographic information system and a virtual reality control system; all the nodes are wireless network nodes comprising a ZigBee wireless module, a sensor module and a power supply module; and the ZigBee wireless module adopts a ZigBee wireless transport protocol, the sensor module carries a small leakage gas-sensitive transducer, and the power supply module is composed of a direct current cell of 3.6 V and a voltage conversion circuit. The invention achieves the synchronization of environment parameters of all monitoring points, early-warning information of potential accidents and correct positioning information of dangerous sources when an accident occurs in a monitoring center and the whole site, and the invention solves the problems that sudden leakage events can not be monitored and early-warned in time and the site information can not be acquired and transmitted in time in the prior art.

The invention discloses a purifying medical endoscope which comprises an endoscopic flexible main casing. An endoscope body is disposed inside the endoscopic flexible main casing. A suction tube serving as a plier channel tube and a water-gas tube are contained in the endoscopic flexible main casing and can be pulled out of the endoscopic flexible main casing after use. The suction tube serving as the plier channel tube and the water-gas tube penetrate out of the tail end of the endoscopic flexible main casing and are connected with a positive gas pump and a reverse gas pump respectively. The endoscope body comprising a CMOS (complementary metal oxide semiconductor) imaging lens component, an LED light source and a fiber light transmitting bundle is made into a fully closed waterproof structure. The suction tube serving as the plier channel tube and the water-gas tube are in separable independent structures, and accordingly the major defect that slender tube cavities of a suction tube serving as the plier channel tube and a water-gas tube of a traditional endoscope cannot be sterilized satisfactorily is overcome thoroughly, the endoscope turns into a virtually independent demountable disposable product, and the potential accident of cross infection in use of the clinical endoscope is eliminated thoroughly. The purifying medical endoscope has great significance.

The invention provides a real-time vehicle trajectory prediction method for a signalized intersection. The method comprises the following steps that trajectory data during phase switching of the signalized intersection is acquired, and historical trajectory libraries are built according to the vehicle stopping and passing decisions and the following vehicle state respectively; the stopping and passing decisions of vehicles are pre-judged on the basis of statistical data of historical trajectory characteristic indexes; the single vehicles and the following vehicles are pre-estimated on the basis of the historical trajectory libraries by means of a K-NN model and an IDM following vehicle model respectively; and trajectory prediction is conducted by means of Kalman filtering. According to thetrajectory prediction method, multiple steps sizes of trajectory prediction can be conducted on the vehicles at the signalized intersection, the dangerous driving behaviors of the vehicles can be recognized in advance, the method can be applied to a real-time signal control strategy or vehicle-mounted early warning system, and the potential accident risk caused by the dangerous driving behaviorsis eliminated actively.

An embodiment of the invention discloses an early warning method for high-speed running. The method includes: acquiring first running state information of a first vehicle, judging whether the first running state information is abnormal or not, and if yes, sending the first running state information to a server by means of communication connection; after the server receives the first running state information, sending early warning information to second vehicular equipment; enabling the second vehicular equipment to alarm according to the received early warning information. By adoption of the early warning method for high-speed running, a vehicle in potential accident can be warned early according to running states, multiple vehicles can be connected with the same server to realize shearing of early warning and supervision data, and accordingly possibility of serial rear-end collision accidents on expressways can be lowered effectively, and traffic accident early warning efficiency is improved.

The invention belongs to the technical field of road safety evaluation, and discloses a space-autocorrelation-based traffic accident blackspot identification method and a space-autocorrelation-based traffic accident blackspot identification device. A geographical distribution characteristic is described from the angle of geographical accident distribution by combining accident attribute values on road space units on the premise of a proximity relationship between the road space units, and a traffic accident blackspot is identified by adopting a kernel density estimation and space autocorrelation method. The shortcoming of relatively poorer visual expression capability of research data due to adoption of a classical mathematical statistical analysis method for a traffic accident blackspot identification process in the prior art is overcome. By the method, traffic accident blackspots at road sections and intersections can be identified, so that identification results are more accurate. In addition, a special analysis function is fully utilized on the basis of spatial position and geographical position information, and a foundation is laid for finding out accident causes.

A traffic safety evaluation method of a road network planning scheme is provided; the traffic safety evaluation method of the road network planning scheme aims to solve the problems that an existing traffic safety management method mostly performs evaluations after accidents and cannot be organically combined with the road network planning designs, thus causing high accident generation rates and high investments in follow up road safety improvements; the method comprises the following specific steps: 1, dividing types of road segments and intersections of the target road network; 2, respectively predicting the traffic accident frequency of the road segment and intersection of each type; 3, determining latent accident-prone locations based on the step2; 4, analyzing induction factors of thedetermined latent accident-prone locations; 5, building road network unit traffic safety grading evaluation standards based on the step2, and grading traffic safety status of the road network. The method is applied to the traffic safety evaluation fields of the road network planning scheme.

The invention relates to a salt mine double-well solution mining method, in particular a salt mine double-well solution mining method. In the method, injection holes are formed on two sides of the bottom of an under central pipe in a vertical well; in a double well production process, part of clean water is separated and injected into the central pipe in the vertical well when the clean water is injected into a horizontal well, so that the clean water flows into a casting from the injection holes of the central pipe in the vertical well to dilute oversaturated brine in the casting in the vertical well; and the injection water flow in the central pipe of the vertical shaft is displayed and monitored by an electromagnetic flowmeter, so the concentration of the brine discharged from the vertical well can be controlled accurately. The method has the advantages that: 1, the concentration of the brine discharged from the vertical well in a double-well solution mining process can be accurately controlled; 2, the concentration of the brine discharged is prevented from being overhigh in a production process so as not to arouse crystallization and block the underground casting or a ground brine return pipe, and thus, the safe, continuous and high-efficiency production capacity of the salt wells is improved; and 3, as a large amount of high-pressure clean water is injected into the central pipe in the vertical well to wash the underground casting in the vertical well and the ground brine return pipe, the crystallization or scaling on the pipe wall can be prevented, potential accidents are eliminated, and well repair times and cost can be reduced greatly.

The invention discloses a highway accident monitor method and system based on ground-space collaborative sensing. The method comprises the steps that a ground-based sensing device acquires real-time speed and quantity of vehicles on a highway, the speed and quantity are calculated and processed into traffic volume and vehicle flow density, and analysis and processing help determine a potential accident road section; then data of the potential accident road section is transmitted to a monitor execution system according to analysis data acquired by the ground-based sensing device, and a nearestUAV is selected according to a UAV scheduling algorithm and sent to the site rapidly to confirm the accident; at the same time, the UAV stays and hovers at the accident road section so as to keep monitoring the situation on the site. Through adoption of the highway accident monitor method and system, advantages of high mobility and wide observation range of a space-based sensing device are fully utilized, desired data is relatively simple and is easy to obtain, real-time road conditions can be monitored rapidly, accurate point-to-point control is realized, the observation result is accurate, direct and clear, and processing efficiency of the traffic accident is improved greatly.

The invention discloses a driving safety assessment method and device. According to the scheme, basic information of a driver, safe driving record data and driving violation and accident data are input into a driving safety evaluation model together to obtain driving safety level so that the accuracy of the obtained driving safety level can be improved, potential accident drivers can be positioned, and therefore accidents are reduced through targeted management. The method comprises the following steps: acquiring basic information, safe driving record data and driving violation and accident data of a driver to be evaluated, wherein the basic information comprises psychological data, physiological data and driving skill data; inputting the basic information, the safe driving record dataand the driving violation and accident data into a pre-trained driving safety evaluation model; adopting the trained driving safety evaluation model for portraying a driver to be evaluated, so that the driving safety level of the driver to be evaluated is obtained, and an alarm is given according to the driving safety level.

A printer system using inks, toners or developers with solvents therein is provided with a detector for volatile organic compounds assists in reducing potential accidents in the printer. The detector may be able to identify at least a threshold level of volatile organic in a gas phase in the printer, or may be able to identify various levels or a continuous metered level of volatile organic compounds (VOC's). An automatic warning, automatic signal, or even automatic cutoff function may be associated with the detector. The detector may be inside the printer or associated with a vent or generally positioned on or near the printer. One mode of detection operation described in detail is identification of changes in dielectric constant in a vapor phase or vapor stream that can be associated with changed levels of VOC in that phase or stream.

The invention discloses an apparatus for controlling the lateral direction of a vehicle and a method thereof. According to one embodiment of the present invention, the apparatus for controlling the lateral direction of a vehicle comprises a driver recognition unit, a driver pattern detection unit, and a lateral control unit. The driver recognition unit is configured to recognize a driver by means of at least one sensor arranged on a vehicle wherein the driver is driving. The driver pattern detection unit is configured to detect the driving pattern of the driver among a plurality of presorted driving patterns. The lateral control unit is configured to control the lateral direction of the vehicle according to the detected driving pattern of the driver. When the torque of an electric power steering system (MDPS) is smaller than a predetermined critical value, the lateral control part controls the lateral direction of the vehicle according to the detected driving pattern of the driver. In this way, the lateral control is implemented according to the driving tendency of the driver, so that potential accidents caused by incorrect driving tendencies of drivers can be prevented. Meanwhile, unidentified troubles during the lateral control process can also be eliminated.

The application discloses a method and system for improving the quality of low-rank coal. The method comprises the following steps: drying to remove water in lignite which is crushed into a preset degree; sorting the dried lignite to remove pulverized coal; conducting destructive distillation on the sorted lignite at a low temperature. According to the application, the adjustability of the whole process is enhanced, and the energy distribution of the system is optimized, so that the adverse impact of pulverized lignite on low-temperature destructive distillation is reduced to the maximum extent, the quality of tar is improved, and the granularity range of quality-improving feed coal is broadened; as severe screening of the feed coal is not required, equipment investment is reduced, and potential accidents of dust pollution and spontaneous combustion are reduced.

A mechanism is provided for lowering the height of the front part of a motor vehicle. A radar sensor is provided to sense the proximity of an adjacent vehicle. A signal is passed to a control unit which responds when a potential accident situation is detected. An output passes to a valve unit which is actuated to permit gas from an inflatable element to escape through a nozzle. As the gas escapes the element reduces in length, and a lowering housing element connected to a wheel of a vehicle moves upwardly into an upper housing element which is fixed to part of the structure of the vehicle. Thus, the front part of the vehicle is lowered so that the bumper on the vehicle is at an appropriate height.

The invention relates to a vehicle door opening anti-collision early warning method based on V2X. The method comprises the steps of obtaining driving parameters periodically broadcasted by surrounding vehicles and non-motor vehicles / pedestrians, and the driving parameters at least comprising position information, speed, acceleration and driving tracks; acquiring driving parameters of the current vehicle; screening out surrounding vehicles and non-motor vehicles / pedestrians which have a crossing and overlapping area with the current vehicle driving track; judging whether the crossing and overlapping area covers the position information of the current vehicle or not, and if yes, taking surrounding vehicles and non-motor vehicles / pedestrians corresponding to the crossing and overlapping area covering the position information of the current vehicle as dangerous targets; judging whether the current vehicle is in a static state or not, and if yes, sending an early warning signal to the current vehicle; or else, not giving an early warning prompt. According to the method, non-motor vehicles / pedestrians and traffic participants without V2X equipment can be considered in scene calculation, the defects existing in an existing vehicle door collision prediction method are overcome, and potential accidents can be eliminated.

The invention provides infant toothpaste having an all-food-grade raw material formula. The infant toothpaste comprises the following components: a humectant, an adhesive, a stabilizer, abrasives, a sweetening agent, a nutrition enhancer, a flavouring agent, pigment, and the rest of water, wherein cellulose with the fibre length of 40-80 mu m and the granularity of 10-40 mu m is used as an abrasive, and the weight of cellulose is 15-72% of the total weight of the abrasives of the toothpaste. The toothpaste disclosed by the invention is good in teeth cleaning effect and lower in deciduous teeth abrasion; the toothpaste is particularly applied to cleaning infant deciduous teeth in low calcification extent, so that a delicate infant oral environment can be cared better; simultaneously, all selected components are edible components or food additives meeting national relevant safety and health standards; children are also safe even little toothpaste is remained and swallowed mistakenly, so that health potential accidents are avoided.

The invention discloses a wide-area-measurement-system (WAMS)-based power grid safety and stability visualization method. The method comprises the following steps of: converting data to operations of angle stability visualization, voltage stability visualization, dynamic stability visualization, frequency stability visualization, thermal stability visualization, stability three-dimensional visualization and comprehensive stability visualization through a computer graphical display technology; effectively carding and integrating wide area measurement, monitoring, analysis, early warning and decision results so as to display the results to a dispatcher by visual means; and monitoring, actively early warning, actively analyzing and actively providing auxiliary decision results in real time, and providing key information needed by the dispatcher so as to realize a multi-angle multi-dimensional intuitive and visualized data display mode. Therefore, control over power grid operating conditions is strengthened by the dispatcher, existing abnormal or potential accident potentials are penetrated timely, and scheduling operation is developed from an experience type to analysis and intelligent types.

The invention belongs to the technical field of probabilistic safety assessment, and specifically relates to a probabilistic safety assessment method for nuclear fuel highway transportation. Accordingto the invention, potential accident determination is performed according to basic data of the evaluation, accident scenario analysis and package integrity analysis, then accident frequency calculation, source item analysis and consequence estimation are performed, finally overall radiation risk calculation is performed, and the transportation risk is assessed. The probabilistic safety assessmentmethod can make up a defect that the selection of radiation consequence accident calculation in the traditional method is purely by experience, can be applied to safety assessment for nuclear fuel highway transportation, and is quantitative and more scientific.

The invention discloses an airport conflict hotspot identifying method, which comprises the steps of reading and preprocessing scene surveillance radar data, extracting historical taxiing tracks of aircrafts, calculating a set of passing aircrafts by taking a taxiway component as a unit, analyzing whether overlapped taxiing routes and taxiing time exist between the aircrafts, and whether courses and distances between the aircrafts exceed predetermined threshold values, and identifying the aircraft that satisfies a hotspot generating condition in the set of aircrafts passing through a same taxiway as an airport hotspot. The airport conflict hotspot identifying method disclosed by the invention has the beneficial effects that the method, which is not based on historical unsafe event or potential accident data, is simple to acquire scene surveillance data, relatively low in expert participation degree, direct in airport hotspot identifying process and clear in result.

The invention discloses a crane surface detect detection unmanned aerial vehicle device and detection method. The crane surface detect detection unmanned aerial vehicle device comprises an unmanned aerial vehicle body and a ground treatment device, wherein the upper portion of the unmanned aerial vehicle body is provided with a controller, a first wireless communication module, and a camera arranged through a pan-and-tilt; the ground treatment device is composed of unmanned aerial vehicle remote control buttons, pan-and-tilt remote control buttons, a display screen, a second wireless communication module and a control device; the unmanned aerial vehicle remote control buttons, the pan-and-tilt remote control buttons, the display screen and the second wireless communication module are all electrically connected with the control device; the crane surface detect detection unmanned aerial vehicle device and detection method achieve wireless communication through the first wireless communication module and the second wireless communication module. By taking the advantage of aerial operation of the unmanned aerial vehicle, the crane surface detect detection unmanned aerial vehicle devicesolves the problem of detecting difficulty of certain important parts of a large crane, thereby improving the detecting efficiency, being capable of completing detecting tasks difficult to accomplishby traditional manual manners, effectively reducing potential accidents and labor cost as well as potential risks, and meeting the urgent demands of industrial development.

The invention relates to a lane auxiliary method for controlling steering torque based on vehicle-mounted blind area visual scene analysis. The method comprises the steps of (1) based on a depth convolution neural network, carrying out vehicle and road identification line conjoint analysis on vehicle blind area visual scene input, and outputting boundary information of a lane where a current vehicle is located and co-directional vehicle information of adjacent lanes; (2) estimating the relative distance between the boundary of the lane where a rear side vehicle and the vehicle are located andthe vehicle, and calculating the pre-collision time of the vehicle and the vehicle in a blind area and the pre-deviation time of the lane where the vehicle is located; (3) sending graded early warningto a driver through two interactive modes of sound and graphic interfaces; and (4) controlling the steering torque of the vehicle by a PID controller through an electronic steering system to enable the vehicle to return to the current driving lane when the vehicle has no lane change intention and is about to deviate from the driving lane or has lane change intention and has a collision risk. Theoccurrence of corresponding potential accidents can be actively avoided, and the active safety performance of automatic vehicle driving is improved.

The invention relates to a smart supervision box-typed wind transformer substation. Based on the basic information of the box-typed transformer substation, a signal receipt and transmit converter is arranged in all box-typed transformer substations and master control rooms of wind power plants. The invention can achieve remote-control, remote measurement and remote regulation as well as self-diagnosis of internal failure of a transformer and failure recovery of an outlet loop by way of wire or wireless communication. The invention adopts wire or wireless communication or the combined communication therebetween. The wire communication way is achieved by arranging a profibus industrial field bus; the wireless communication way is achieved by a wireless communication base station. The invention has the advantages that: with the system management, the further centralized, accurate and safer management can be achieved; an alarm can be sent out and handled timely when a potential accident of the system is found out so as to efficiently reduce the accidence rate; the time for solving the system failure is significantly shortened and the work efficiency is increased.

The invention relates to oil field and gas field oil extracting and gas extracting equipment manufacturing. Innovative design is carried out in terms of well opening sealing and safety protection mechanisms, and the problems that high gas extraction temperature makes the stickness of hydraulic oil in an annular preventer descend when the temperature of the hydraulic oil is higher than the rated functioning temperature of the hydraulic oil, leakage is generated, and pressure is reduced are solved. A circulating water cooling system with a low-water-level inlet and a high-water-level outlet is arranged in the annular preventer body to achieve water circulation and reduce the temperature of the preventer. The annular preventer has the advantages of being exquisite and compact in structure, good in heat absorbing effect and capable of guaranteeing normal work of the hydraulic oil under the rated functioning temperature, prolonging the service life of a rubber core, being capable of being flexibly and reliably closed and eliminating potential accident hazards caused by high temperature.

The embodiment of the invention provides a transient forewarning method and device for a road risk event. The method comprises the steps of receiving a road risk event published by a publisher, determining a forewarning level of the road risk event according to the risk type of the road risk event, determining a forewarning strategy of the road risk event according to the risk type and the forewarning level of the road risk event, and finally feeding the forewarning strategy back to a driver. According to the method and device, the most road risk events can be recognized and forewarned withoutdepending on a plenty of vehicle-mounted equipment or roadside equipment, and the method and device are low in application cost and easy to popularize; meanwhile, aiming at the road risk events withdifferent risk types and forewarning levels, the different forewarning strategies are used for forewarning, the driver is facilitated to accurately and intuitively acquire the information of the roadrisk event, and thus the driver can cope with the road risk event in time, and the occurrence of potential accidents and secondary accidents can be effectively avoided.