354results about How to "Avoid secondary accidents" patented technology

The invention discloses a four-wheel steering vehicle rollover prevention system and a control method thereof. The four-wheel steering vehicle rollover prevention system comprises a sensor module, a drive-by-wire rear-wheel steering module, a front wheel differential brake module, a rollover evaluation unit, a route planning unit and a controller ECU; and the sensor module comprises a vehicle velocity sensor, a steering wheel angle sensor, a vehicle body rolling angle velocity sensor, a vehicle body rolling angle sensor, a yaw velocity sensor and an acceleration sensor. The rollover prevention control is carried out through the front wheel differential brake module, and the original driving intention of a driver is kept through the rear-wheel steering module, so that a secondary accident possibly resulting from the traditional rollover prevention control without considering the driving intention is avoided.

The invention provides an intelligent method for detecting a traffic accident at night. The method comprises the following steps: acquiring a plurality of monitoring video images of a vehicle during driving at night, and processing the monitoring video images so as to acquire a plurality of binary images; judging car light of the vehicle from the binary images, and determining the position of the vehicle according to the car light of the vehicle; establishing a lane model according to the position of the vehicle, and establishing an image coordinate for the vehicle according to the lane model; acquiring the driving track and driving speed of the vehicle according to the image coordinate and the lane model; and judging whether the vehicle violates traffic regulations according to the lane model, and the driving track and driving speed of the vehicle. According to the intelligent method for detecting the traffic accident at night provided by the embodiment of the invention, the working efficiency of existing road video monitoring is improved, the working strength of monitoring personnel is reduced, and meanwhile traffic delay caused by traffic accidents is reduced so as to prevent secondary accidents.

The invention discloses an intelligent vision based vehicle law-violation parking detection system and method. The detection system is that the output end of a visual sensor node is connected with an image processing terminal device and a video database management device, the image processing terminal device is connected with the video database management device, the image processing terminal device and the video database management device are jointly connected with a database, the database is connected with a geographical information system, the visual sensor node, the image processing terminal device, the video database management device, the database and the geographical information system form an image processing private network, the image processing private network is connected with a data private network through a safety access platform, a client-side management system is arranged in the data private network, automatically detects law-violation parking behaviors of vehicles, automatically records law-violation videos and performs timely processing, 'second accidents' caused by processing lag are avoided, data safety is ensured, data integrity and confidentiality can be effectively protected, and the intelligent vision based vehicle law-violation parking detection system and method have good application prospect.

The invention discloses a GPS data-based highway vehicle abnormal behavior detection method comprising the following phases in a data obtaining phase, vehicle dynamic information is obtained via a vehicle-mounted GPS device; in a data processing phase, coordinate data under a Gauss coordinate system is obtained after coordinate conversion operation is performed on the vehicle dynamic information;in a feature extraction phase, converted vehicle dynamic parameter features are extracted according to coordinate data of different times; in an identification and early warning phase, a standard deviation method and a neural network are adopted for identifying vehicle behaviors according to the vehicle dynamic parameter features, and identified vehicle abnormal behaviors are subjected to graded early warning operation. According to the method, a vehicle abnormal driving behavior state can be detected in real time on a highway merely via the vehicle-mounted GPS device, prevention of secondaryhighway accidents can be facilitated, a congestion degree of the highway can be lowered, vehicle delay can be reduced, highway operation efficiency can be improved, and an aim of low carbon and safe trips can be attained.

The invention discloses a high-precision map road information rapid generation system and method based on space-time trajectory reconstruction. The system comprises a track reconstruction module, a lane determination module, a lane separation module, a lane boundary line drawing module and a multi-data synthesis fusion module, wherein the track reconstruction module performs reverse space-time reconstruction of a vehicle driving track by utilizing the vehicle track information acquired by a roadside sensing unit and a vehicle-mounted unit, the lane determination module determines a lane according to a distance between vehicle driving tracks, the lane separation module draws a lane separation line at a midpoint of connecting lines of middle points of the adjacent single lane tracks, the lane boundary line drawing module draws a lane boundary line according to the vehicle driving track direction and the driving speed by taking the lane separation line as the reference and combining the road standard width and various line widths, and the multi-data synthesis fusion module fuses the collected roadside sign information with a map. The system is advantaged in that problems that an existing diversion high-precision map drawing process is complex, and special conditions of a road surface cannot be reflected in time are solved.

The invention provides a traffic accident scene warning system and method. The system comprises a detecting unit for detecting traffic accident information in a monitoring road section, a warning unitfor prompting information to a vehicle in the monitoring road section, and a communication unit for performing data communication. The warning unit includes a plurality of warners arranged in the traffic direction of the road section. When the detecting unit detects a traffic accident in the monitoring road section, the warner with the distance from the traffic accident location within a preset distance threshold range makes an alarm. According to the traffic accident scene warning system and method, an automatic response can be made in the first time after the accident by the on-site level control response, and subsequent vehicles are warned to decelerate and avoid. Through the on-site level control, the response speed of the system is greatly improved, and secondary accidents can be effectively prevented. The traffic accident scene warning system and method are of great significance for the prevention of secondary accidents.

The invention relates to a rescue unmanned aerial vehicle and a regulating and controlling fire fighting system thereof. The rescue unmanned aerial vehicle comprises an unmanned aerial vehicle body, an executive module arranged on the unmanned aerial vehicle body, a control terminal controlling the unmanned aerial vehicle body and the executive module in a wireless mode, and a battery used for providing electric energy for the executive module. The unmanned aerial vehicle body is provided with three or more shafts driven by corresponding motors correspondingly. The executive module comprises an illuminating system, a radar life detector and a GPS locating system and / or a high-definition camera. A rescue vehicle group comprises ten or more detection breaking unmanned aerial vehicles, ten or more water spraying unmanned aerial vehicles and ten or more fire ball extinguishment unmanned aerial vehicles. According to the rescue unmanned aerial vehicle and the regulating and controlling fire fighting system thereof, design is reasonable, the structure is reasonable, and usage is convenient.

The invention discloses a wireless alarm system for preventing secondary accidents of a freeway tunnel group, which comprises alarm base stations, a signal repeater, a scene alarm assembly, a remote controller and a monitoring center, wherein the alarm base stations are distributed in a channel and used for starting an alarm signal when an accident is generated; the scene alarm assembly is arranged at the entrance of the channel; the alarm signal of the alarm base stations is transmitted among the alarm base stations in the channel by a wireless network; the accident alarm signal of the alarmbase stations is finally transmitted to the remote controller, and the scene alarm assembly is driven by the remote controller to remind the following vehicle to slow down or avoid entering the channel in an acousto-optic picture way; the remote controller is communicated with the monitoring center by a GSM / GPRS network, and the monitoring center carries out remote monitoring on scene equipment and an alarm state by the remote controller. The invention can effectively prevent the secondary accidents of a freeway tunnel group.

The invention discloses a remote and intelligent traffic accident management device. The remote and intelligent traffic accident management device comprises an event obtaining module, a vidicon distribution obtaining module, a phone number obtaining module, an event confirmation module, an image snapshot processing module, a voice broadcast control module and a central processing unit. Accident occurrence information is obtained from an external interface, an accident point vidicon is invoked and an accident site picture is snapshot according to the accident point position information included in the obtained accident occurrence information and information base of vidicon distribution points, judgment whether a broadcasting device exists in an accident point site or not is made according to external field broadcast distribution point information, the voice broadcast control module is utilized to conduct remote guidance on the site if the broadcasting device exists, and remote site guidance is performed through a short message or voice communication if no broadcasting device exists. The remote and intelligent traffic accident management device has the advantages that remote accident management and control can be achieved, accident handling time is shortened, and road traffic jam and possibility of secondary accident occurrence are avoided.

The invention relates to the field of satellite navigation, and discloses a satellite navigation positioning enhancing system in an indoor environment. The system comprises a reference unit, a centralized satellite navigation signal simulator and N transmitting antennas, the reference unit and the centralized satellite navigation signal simulator are connected successively, and the N transmitting antennas are connected with the centralized satellite navigation signal simulator, and emit N regenerated satellite navigation signals synchronously. The invention also discloses a satellite navigation positioning enhancing method in the indoor environment. Satellite navigation signals in an indoor area are received instantly or reference signals are obtained via the Internet, and navigation signals synchronized with signals of a real satellite navigation system in the indoor area are generated and broadcast in real time indoor. Indoor satellite navigation positioning is realized without change of a navigation terminal. The system of the invention is low in construction difficulty, low in cost and general and supports GNSS systems.

The invention relates to an unmanned aerial vehicle for traffic guidance and an application of the unmanned aerial vehicle. The unmanned aerial vehicle comprises a vehicle body, and the unmanned aerial vehicle further comprises a main camera group, an LED display screen and a loudspeaker, wherein the main camera group is arranged on the vehicle body and is used for collecting traffic condition data; the LED display screen is arranged in a belly position of the vehicle body, and is used for displaying traffic guidance commands obtained based on the traffic condition data; and the loudspeaker is arranged in the belly position of the vehicle body, and is used for broadcasting the traffic guidance commands obtained based on the traffic condition data. Compared with the prior art, the unmanned aerial vehicle disclosed by the invention has the advantages of being not subject to road conditions, and being flexible, accurate and rapid; the unmanned aerial vehicle can shoot pictures over an accident point, so that a full coverage of law enforcement is achieved, professionals can quickly determine a core accident point, shot pictures and shot videos can be delivered to the professionals at the first time, and in-time handling of traffic accidents can be guaranteed.

The invention relates to the field of satellite navigation, and discloses a satellite navigation and positioning enhancement system and a method based on dynamic compensation. The system comprises a reference unit capable of receiving external satellite signals, a satellite navigation enhancement device, and a transmitting antenna, which are connected in sequence. The system further comprises a dynamic compensation unit connected with the satellite navigation enhancement device. The satellite navigation enhancement device regenerates a dynamic satellite navigation and positioning enhancement signal in real time according to the time information, the constellation parameter information and the location and dynamic compensation information of a moving carrier provided by the reference unit and the dynamic compensation unit, and broadcasts the signal through the transmitting antenna. As the satellite navigation enhancement device regenerates a dynamic satellite navigation and positioning enhancement signal in real time, satellite navigation can be realized without any modification on the existing navigation terminal. A high-speed moving carrier can be positioned accurately in an environment without satellite navigation signals. The system and the method have important application value to emergency rescue for traffic accidents in tunnels, prevention of secondary accidents, and reduction of major accident risk.

The invention discloses a vehicle control method and system, electronic equipment and a computer readable storage medium. The vehicle control method includes the steps that a current traffic image isobtained, and whether a current lane of a target vehicle is jammed or not is judged according to the current traffic image; if the current lane of the target vehicle is jammed, whether change lane space exists in a target lane or not is judged according to the current state information of the target vehicle and the lane information of the target lane, wherein the target lane comprises a left-sidelane or a right-side lane of the current lane; if the change lane space exists in the target lane, a change lane instruction is sent to the target vehicle. Therefore, the vehicle control method is combined with the image collecting technology and vehicle real-time data, whether lane changing of a vehicle is reasonable or not in the jammed state is obtained, secondary accidents are avoided, and traffic jams are reduced.

The invention discloses a collision-proof charging pile for charging a new energy vehicle, which comprises a shell, wherein the top of the shell is fixedly connected with a rain-shielding top cover, four peripheries of the shell are correspondingly provided with an elastic bending plate, and the inner side center position of the elastic bending plate is elastically connected with the outer side wall of the shell through an air spring. In this invention, the cooperation of cushion and elastic steel plate is capable of absorbing and counteracting a first portion of the collision energy, by the cooperation of the first cushion spring and the air spring, the collision energy can be further absorbed and canceled, At that same time, the crossbar is forced to move and transmit the force to the connecting rod, As that piston block is move by the connecting rod, the force of the third cushion spring is compressed, and the collision energy is canceled again, and the collision energy can be reduced to the minimum through the cooperation of the series of structure, thereby effectively protecting the internal circuit structure of the charging pile and avoiding the occurrence of the secondary accident.

The invention discloses an algorithm for detecting object and passenger behaviors on an escalator floor plate based on machine vision, which comprises the steps of 1) acquiring video images; 2) building a background model by using a CodeBook algorithm, and extracting an object and passenger foreground image; 3) performing head feature extraction on the foreground image by using an HOG descriptor; 4) performing head detection on the foreground image by using an AdaBoost cascade classifier; 5) tracking a passenger target by using a Kalman filter; 6) performing contour detection and ellipse fitting on the foreground image by using a Fitzgibbon algorithm; 7) removing the passenger target in the step 6), and tracking an object target by using the Kalman filter; and 8) and judging behaviors of the object and the passenger through analyzing the moving speed and the moving direction of center coordinates of the object and the passenger. According to the algorithm, detection and analysis can be performed on object and passenger behaviors on the escalator floor plate, an emergency plan can be started timely when an exception occurs, and potential hazards of an exceptional situation are enabled to be minimized.

The invention discloses a highway. An unmanned intelligent patrol system comprises an unmanned aerial vehicle flight control system, an LED road condition display screen system, an aerial automatic pile swinging system and a charging pile duty platform that are all cooperatively controlled by an unmanned aerial vehicle data center and a monitoring command center. The system can be used for carrying out patrolling on the expressway in all weather, and has extremely high reliability. The condition of the road surface can be effectively helped to be dredged when an accident occurs on the expressway, and early warning measures can be carried out, so that the occurrence of secondary accidents is prevented, the safety of the personnel property is ensured, and the personal safety of the rescue workers and the police officers is greatly improved.

The invention discloses an extinguishment composition. The extinguishment composition comprises extinguishment powder and water, wherein the weight ratio of the extinguishment powder to the water ranges from 1:0.8 to 1:1.2. The extinguishment powder is composed of, by weight, 3 parts to 7 parts of calcium silicon residues, 1 part to 3 parts of fly ash, 1 part to 3 parts of flue gas desulfurization gypsum, and 0.5 part to 1.5 parts of cement. The invention further discloses an extinguishment method for spontaneous combustion of coal in a goaf. The method includes the first step of mixing and stirring the extinguishment powder with the water according to the weight ratio ranging from 1:0.8 to 1:1.2 to form extinguishment slurry, and the second step of injecting or spraying the extinguishment slurry manufactured in the first step into the goaf with the requirement for extinguishment so as to conduct grouting extinguishment. The invention further provides the purpose of using the extinguishment composition for conducting extinguishment for spontaneous combustion of the coal in the goaf. According to the method, less clay or loess is used, workloads for processing the extinguishment slurry are reduced, and acid gas produced by coal combustion can be solidified.

The invention relates to a simulation method and a stimulation system used for online detection of hydrogen leakage. The method comprises the steps of: detecting hydrogen storage and hydrogen concentration around a transmitting device in real time; when the hydrogen concentration detected is more than the set threshold value, determining the size and the shape of a crack through a panoramic camera and forming an initial boundary condition to perform system simulation so as to simulate composition of air around the current device and provide distribution situation and flow direction of hydrogen; and with the combination of material attributes of the device, estimating development situation of the crack by calculating a simulation program. The system comprises a cluster simulation computer, a sensor connected with the cluster simulation computer and used for detecting the hydrogen concentration, and the panoramic camera for detecting the crack. The method and the system can be used to position the crack rapidly in real time and provide data such as distribution concentration and flow direction of hydrogen in a field through high speed simulation, so that the method and the system are suitable for remote disaster detection to guide field rescue operation. The method and the system have better practical value and wide application prospect.

The invention discloses a laser auxiliary warning device of an automobile in severe weather. The laser auxiliary warning device comprises a red laser device, a circuit control system and an optical shaping system. The red laser device can generate red light with a preset wavelength; the circuit control system is connected with a driving circuit of the red laser device, and the red laser device can output the red light under the control of the circuit control system; the optical shaping system comprises an optical lens assembly, is configured at a transmission window of the red laser device and outputs the emergent laser light after shaping the laser light. The laser auxiliary warning device has the advantage that a good instruction effect can be realized under the severe weather condition.

The invention discloses a control method for improving the safety of a four wheel hub motor-driven electric car after tire bursting. Four wheels of the electric car are each provided with a hub motor for driving the corresponding wheel to rotate; each wheel is further provided with a steering motor for ensuring independent steering of the wheel; electrically-controlled hydraulic braking units are adopted to control braking force of the corresponding wheels, that is to say, single-wheel independent driving, braking and steering are achieved, and therefore a new way and a new implementation platform are supplied to safety control of the electric car after tire bursting. According to the control method, the four wheels are effectively controlled to generate necessary compensating moment on the basis of a method achieving comprehensive braking, steering and driving control over the wheels of the complete car, and then the driving safety of the electric car after tire bursting is improved. A whole system comprises a sensing layer, a control layer and an execution layer.

The invention discloses an automatic active early warning system for highway rescue. The automatic active early warning system comprises an early warning vehicle and a remote control device, wherein the remote control device is connected with the early warning vehicle through wireless signals, the early warning vehicle comprises an underpan, the lower part of the underpan is provided with a plurality of rolling wheels, the rolling wheels are connected with a motor arranged on the underpan, and a control unit is arranged on the underpan and is respectively connected with a power supply, a warning lamp, a warning plate, a distance measurement sensor, an alarm, an automatic parking device, an automatic tracking sensor and a first singlechip wireless transceiver which are arranged on the underpan. The early warning system can warn drivers and rescue people in the first time, the warning effect is obvious, the safety performance is good, the automation degree is high, the operation is simple, and the occurrence of secondary accidents injuring the rescue personnel can be effectively prevented.

The invention provides a high-altitude dismantling method of an offshore wind power impeller and a gravity center adjustable type tool used for the dismantling method of the offshore wind power impeller. The high-altitude dismantling method comprises the following steps that (1), a blade tip and a blade root of a fractured fan blade are separated, and the blade tip is hoisted away by adopting a main crane; (2) the blade root is removed by adopting the main crane; (3) the main crane is adopted to hoist the gravity center adjustable type tool to replace the original fan blade, wherein the weightand the gravity center position of the gravity center adjustable tool are the same as those of the fan blade, and the gravity center adjustable type tool is mounted on the impeller; (4), the main crane is utilized to mount a blade root hoisting belt on two pieces of upward fan blades, and an auxiliary crane is utilized to be connected with a hoisting point on the gravity center adjustable type tool; and (5), a bolt between a hub and a power generator is removed, so that the hub is separated from the power generator, the impeller can be dismantled, the main crane and the auxiliary crane work simultaneously, an overturning action of the impeller is completed, and finally the impeller is slowly placed at a preset position. According to the high-altitude dismantling method, two hoisting points are used, dismantling and overturning of the impeller can be achieved, a crane ship does not need to be arranged additionally, and the repair cost is lowered.

The invention discloses a video detection method and system of a road traffic incident. The method comprises: scene information is obtained according to a multi-preset-position cruising mode of a PTZcamera; a cruise list is set for cruise groups and cruise points in cruising; the cruise list is analyzed and a cruise execution list is generated automatically, so that the PTZ camera carries out target detection and incident analyses in all preset position scenes according to a cruising sequence; and then various incidents in the scenes are determined comprehensively to carry out traffic incident alarming. Therefore, various traffic incidents can be discovered in real time and thus alarming signal can be triggered timely; and the field photos are captured and real-time picture recording is carried out. With the system disclosed by the invention, occurrence of secondary accidents is avoided and incident information is obtained immediately, so that the traffic incidents are processed timely and thus traffic safety and smooth traffic are guaranteed to the greatest extent.

The invention discloses a vehicle-mounted highway accident early-warning device, and the device comprises a first wireless receiving and transmitting module which is used for receiving a gateway entrance code of a highway and an SIM card number of a GSM module of a highway traffic police monitoring center; a vehicle-mounted GPS module which is used for obtaining the position information of a vehicle; a vehicle-mounted GSM module which is used for communication with the highway traffic police monitoring center according to the SIM card number; a second wireless receiving and transmitting module which is used for transmitting position information and the gateway entrance code to surrounding vehicles during an accident, and receiving the position information and gateway entrance codes of other vehicles with an accident when there is no accident; and a controller which is connected with the first wireless receiving and transmitting module, the vehicle-mounted GPS module, the vehicle-mounted GSM module and the second wireless receiving and transmitting module, and transmits the gateway entrance code and position information to the highway traffic police monitoring center through the vehicle-mounted GSM module during the accident. The device achieves the detection and early warning of a highway traffic accident, and effectively prevents a secondary accident.

The invention relates to an electric automobile emergency rescue platform. A mobile platform is formed with an automobile serving as a carrier. The electric automobile emergency rescue platform comprises a driving cab and a carriage; the carriage is divided into a control chamber and an equipment chamber; an intro-automobile screen door is arranged between the control chamber and the equipment chamber; an intro-automobile control cabinet is arranged inside the control chamber; an energy storage battery frame, a power generating set, an integral charging device, an electric automobile detection system and an electric automobile electrical control system are arranged inside the equipment chamber; the control cabinet is respectively connected with the storage battery frame, the power generating set, the integral charging device, the integral automobile detection system and the electric automobile electrical control system through control circuits. According to the electric automobile emergency rescue platform, rapid movement of the platform is achieved with the automobile serving as the carrier, the platform can timely achieve a rescue site to charge and rescue the electric automobile.

The invention relates to a damage patching and repairing method based on memory alloy and for an expandable tubular. The problems of complicated mechanisms, poor corrosion resistance, low constructionefficiency and downhole accidents prone to occurring in an existing construction method are solved. The damage patching and repairing method comprises the steps that (1) a memory alloy expandable tubular damage patching tool is selected or prepared; (2) a casing milling or shaping tool is lowered in advance to perform reshaping and cleaning on unsuitable positions; (3) the memory alloy expandabletubular damage patching tool is placed in a low temperature environment, the uniform stress is applied at both ends of the memory alloy expandable tubular damage patching tool to lengthen the memoryalloy expandable tubular damage patching tool; (4) the memory alloy expandable tubular damage patching tool and a heating rod disposed in the memory alloy expandable tubular damage patching tool are lowered and sent into the damaged expandable tubular together; (5) after installation in place is completed, the heating rod is energized by a cable; and (6) after the memory alloy expandable tubular damage patching tool is completely deformed, the heating rod is powered off and taken out, and patching and repairing of the damaged expandable tubular is completed.

The invention discloses a multifunctional battery bracket for a new energy automobile, and relates to the technical field of new energy automobiles. The multifunctional battery bracket comprises a mounting frame and an air box, a buffering and shockproof mechanism is mounted at the middle portion of the mounting frame, a sealing shell is connected at the middle portion of the buffering and shockproof mechanism, a top cover is fixed at the upper portion of the sealing shell, a loading and unloading opening is formed below the sealing shell, a lifting motor is mounted in the sealing shell, and the shaft end of the lifting motor is connected with a stud. The multifunctional battery bracket for a new energy automobile is provided with the buffering and shockproof mechanism which is connected with the mounting frame and the sealing shell, the device is provided with the sealing shell, the sealing shell can package a battery in the sealing shell to protect the battery, the mounting frame isinstalled on an automobile chassis, a connection frame is fixed on the mounting frame and is capable of vertically moving on a sliding column through a sliding sleeve and can be subjected to buffer and shock absorption through a spring, so that when the sealing shell is impacted and shocked, buffering and shock absorption are performed to protect the battery loaded in the sealing shell to facilitate improvement of the safety of the device.

The invention discloses an elevator operation fault analysis and diagnosis integrated management cloud platform based on big data. The elevator operation fault analysis and diagnosis integrated management cloud platform comprises an elevator car environment parameter detection module, an elevator car operation parameter detection terminal, a management database, a data preprocessing module, an analysis server, a management server, a video image collection module, an early warning module, and a display terminal. An elevator is subjected to real-time data acquisition through the elevator car environment parameter detection module and the elevator car operation parameter detection terminal; the danger influence coefficient is counted in combination with the management server, and the elevatoroperation condition is subjected to safety assessment; and technicians do not need to go to the site to troubleshoot fault reasons after faults occur, the root cause of the fault can be detected at the display terminal, the fault cause can be found out in time, the difficulty of fault analysis at the terminal afterwards is reduced, and the efficiency of fault cause analysis and fault processing is improved.

An event reminding method for mobile terminals near an accident site comprises the following steps: an accident vehicle transmits vehicle collision information to a mobile terminal on the accident vehicle; the mobile terminal of the accident vehicle acquires the geographical position of the accident vehicle and uploads the geographical position and the vehicle collision information together to a cloud server; the cloud server sends position acquisition information down to all mobile terminals logging into the cloud server; all the mobile terminals logging into the cloud server locate the current position and feed the locating data back to the cloud server; the cloud server screens out mobile terminals with the distance smaller than a preset value from the locating data according to the geographical position of the accident vehicle and marks the mobile terminals as mobile terminals to be reminded, and sends the vehicle collision information down to the mobile terminals to be reminded; and the mobile terminals to be reminded convert the vehicle collision information into voice to remind users.