Showing papers on "Rear-end collision published in 2011"

An Adaptive Vehicle Rear-End Collision Warning Algorithm Based on Neural Network

Abstract: Most of the existing algorithms of vehicle rear-end collision have poor adaptive, high false alarm and missed alarm rates. A two-level early warning model based on logic algorithm of safe distance is discussed. The influence of road conditions, driver status and vehicle performance on the warning distance of rear-end collision in the driving process is analyzed. And for different driving conditions, a warning algorithm of vehicle rear-end collision based on neural network with adaptive threshold which can adapt to different status of the three main elements, human-vehicle-road is proposed. Also the comparison of the warning distance whether using adaptive strategies for the rear-end collision algorithm through changing the real-time status of human-vehicle-road is presented. The result of the simulation shows that the algorithm proposed is self-adaptive to the warning distance and region, and the feasibility of the algorithm is verified.

Warning system for avoiding vehicle rear-end collision

Abstract: The invention relates to the technical field of vehicle safety, in particular to a warning method and system for avoiding vehicle rear-end collision. The method provided by the invention comprises the steps of collecting vehicle state information according to sensor signals and converting state information into digital signals to be input into a central processing unit, judging whether the digital signal value exceeds a preset threshold value; if not, returning to step 2, and if yes, performing the next step; selecting a corresponding warning signal from a voice file, outputting to a voice circuit and giving out the warning signal. The system provided by the invention is composed of an acceleration transducer, a speed sensor, other sensors, a voice file, a voice module, a power amplifier circuit, a loudspeaker, a central processing unit and the like. When faults, such as tire burst, collision, roll over, secondary rear-end collision and the like, occur to a vehicle, the invention can notice a rear vehicle of the state of the vehicle with voice, can effectively prevent rear-end collision from occuring in severe weather and ensures the life safety of a driver.

Vehicle rear-end collision protection system

Abstract: The utility model aims to solve the technical problem by providing a vehicle rear-end collision protection system which comprises a sensor, a control unit and an actuating element, wherein the sensor is connected with the input end of the control unit, and the output end of the control unit is connected with the actuating element. The vehicle rear-end collision protection system is characterized in that the sensor comprises a radar sensor and a collision sensor and is arranged inside a rear bumper of a vehicle; the actuating element comprises an airbag and a seat system adjusting mechanism; the control unit includes a collusion control unit, an airbag control unit and a seat control unit; the radar sensor and the collision sensor are connected with the input end of the collusion control unit respectively; and the collusion control unit controls the airbag and the seat system adjusting mechanism through the airbag control unit and the seat control unit respectively. The vehicle rear-end collision protection system is quite different in constitution and structure from the vehicle collision early-warning system in the prior art, and has a relatively-perfect passenger protection function.

Vehicle rear-end collision early warning system based on GPS locating information and wireless communication network

Abstract: The utility model discloses a vehicle rear-end collision early warning system based on GPS (Global Positioning System) locating information and a wireless communication network. The early warning system adopts the structure that vehicle-mounted GPS terminals are arranged on a plurality of running vehicles; the plurality of vehicle-mounted GPS terminals are in wireless communication connection with a database for storing GPS position information; a background server is connected with the database; and a data acquisition unit, a front-and-rear vehicle operating data calculating unit and an alarming decision-making unit are arranged on the background server in wireless communication connection with the vehicle-mounted GPS terminals, wherein the data acquisition unit is used for acquiring the current position data of the front and rear vehicles, the front-and-rear vehicle operating data calculating unit is used for calculating the operating data of the front and rear vehicles, and the alarming decision-making unit is used for judging whether alarming is needed or not according to the operating data of the front and rear vehicles. The vehicle rear-end collision early warning system based on GPS locating information and the wireless communication network can effectively prevent rear-end collision and guarantees safe running of the vehicles.

Development and Evaluations of Advanced Emergency Braking System Algorithm for the Commercial Vehicle

Abstract: This paper presents the development and evaluation of the Advanced Emergency Braking System (AEBS) algorithm for the commercial vehicle. The AEBS is the system to slow the vehicle and mitigate the severity of an impact when a rear end collision probability is increased. To mitigate a rear end collision of the commercial heavy truck, the AEBS is comprised of a millimeter wave radar sensor, CCD camera and vehicle parameters which are processed to judge the likelihood of a collision occurring. If the likelihood of a rear end collision with an obstacle is judged as probable, warning signals are provided by the AEBS algorithm to alert the driver. If the driver fails to react to the warnings when the collision likelihood is judged as being high, the AEBS algorithm applies autonomous braking in order to reduce the impact speed. To demonstrate the control performance of the proposed AEBS algorithm, a longitudinal vehicle model of the commercial target vehicle was developed by using the real vehicle’s test data and vehicle dynamics. Also, closed-loop simulation of the AEBS was conducted. In order to indicate the safety level of the driving situation, new safety indexes are suggested. From the simulation results and analysis of using the safety indexes, it is shown that the proposed AEBS algorithm can enhance the commercial heavy truck's longitudinal safety in a dangerous driving situation, which can be occur in a rear-end collision.

Analyses of Headways for Assessment of Risk Rear-end Collision

Abstract: The paper presents the results of analyses of headways between vehicles on road sections, which can be used as an indirect measure of traffic safety. Such an assumption is derived from a classic model of risk, where the number of accidents and collisions is a product of the values of risk exposure and probability of risk events and their severity. Time To Collisions (TTC) and Time available for Driver’s Reaction (TDR) were taken by the authors as indirect measures of risk. To evaluate the TTC the authors used a typical physical model. Deceleration values and lengths of vehicles were adopted in reference to their type (passenger cars and heavy vehicles). The aim of the analysis was to indicate the impact of several factors, not only traffic flow intensity, on the share of unsafe headways between vehicles, which can affect rear-end collision risk. Particular attention was paid to the impact of the following factors on unsafe headways in traffic flow: (1) traffic volume and traffic flow composition and its speed, (2) different drivers’ behaviour at night-time, (3) characteristics of road and road development, (4) random character of drivers’ behaviour, expressed by variability of reaction time. The data coming from measures on 219 road sections in Poland were involved in the evaluation. There were sections of different cross-section types, with different speed limits, and of different localisation (e.g. roads through built-up area, suburban area and rural area). Additionally, entries of intersections and sections of approaches to pedestrian crossings were also taken into account. The analyses did not include the sections on entries to intersections with light signalling, which due to their specific functioning need a separate study, as is presented in foreign literature (Archer, Young, 2009; Cunto, Saccomanno, 2009). The conducted analyses resulted in building up a database, comprising records of traffic parameters for over 2.6 million vehicles. 24-hour measurements (automatic traffic recorders) covered: time of vehicle’s appearance, speed and length of vehicles. The paper introduces a possible method of assessing the probability of rear-end collision occurrence.

Automotive rear-end collision preventer

Abstract: The utility model discloses an automotive rear-end collision preventer, which comprises a microprocessor, an amplifier, a loudspeaker and a control switch. The loudspeaker is connected with the microprocessor through the amplifier. The control switch is connected with the microprocessor. The loudspeaker is arranged in the automotive carriage. The automotive rear-end collision preventer further comprises a laser distance measuring instrument. The laser distance measuring instrument is arranged on the front automotive bumper. The laser distance measuring instrument is connected with the microprocessor. The automotive rear-end collision preventer is connected with automotive power. The laser distance measuring instrument is arranged on the vehicle for measuring the distance between the vehicle body and the front vehicle or a barrier. When the distance is less than the preset safe distance, the loudspeaker in the carriage starts to alarm and continuously newly advices the driver the distance between the vehicle body and the front vehicle or the barrier, thereby warning the driver to drive in a careful and safe manner, reducing speed or changing lanes in advance, and preventing accidental rear-end collision.

Digital vehicle distance display screen for preventing rear-end collision

Abstract: The utility model relates to a vehicle distance display device, in particular to a digital vehicle distance display screen for preventing rear-end collision. The digital vehicle distance display screen for preventing rear-end collision can detect distance away from a vehicle just behind the vehicle and can display the real-time distance between two vehicles by Arabic numerals in running. In the digital vehicle distance display screen, the input end of a data micro-processing unit is electrically connected with a ranging unit; the output end of the data micro-processing unit is electrically connected with a digital display screen; the output end of the data micro-processing unit is also electrically connected with a sound prompting unit; and the digital display screen is fixed on the left upper corner of the rear windshield of the vehicle. According to the digital vehicle distance display screen, vehicle rear-end collision accidents can be furthest avoided, and safety of nation and people life and property can be protected.

Anti-Rear-End Collision Warning System Based-on Zigbee for Highway Vehicle

Abstract: The majority of traffic accidents on the highway is rear-end collision. According to statistics about ninety percent rear-end collision can be avoided if there is 1 second pretreatment time for drivers. So it is necessary to develop automotive rear-end collision warning system to prevent the occurrence of accidents. The anti-rear-end collision warning system based on Zigbee technology is designded in this paper. Vehicle speed, acceleration and other traffic information among the nodes can be exchanged on real-time by using self-organizing wireless sensor networks consisted by Zigbee network nodes. A vehicle safe distance model is established after considered the effects of other traffic safety factors, and then, the actual distance measured by radar is compared with the safe distance so as to provide early warning, alarm and other driving information to drivers. The experiment results show that the system can effectively provide early warning, avoid rear-end collision, and improve active safety of vehicles.

Apparatus and method for preventing collision and rear-end collision of vechicles

Abstract: PURPOSE: An apparatus and a method for preventing collision and rear-end collision of vehicles are provided to control the depth of the brake considering the front driving vehicle and the rear driving vehicle and to drive safe by preventing the collision accident by the front driving vehicle and rear-end collision accident by the rear driving vehicle. CONSTITUTION: The apparatus for preventing collision and rear-end collision of vehicles includes: an front distance measuring instrument(100); an rear distance measuring instrument(200); and an vehicle control unit(500). The front distance measuring instrument measured the distance of front driving vehicle and creates front distance data. The rearward distance measuring instrument measures the distance of rear driving vehicle and creates rear distance data. The vehicle control unit uses front distance data, the speed of the front driving vehicle and velocity of car to calculate the collision risk index. The vehicle control unit creates and delivers the brake operating signal to control the depth of the brake of the vehicle to the first depth if the collision risk index is same or bigger than the rear-end collision risk index while the collision risk index is bigger than the standard critical range or is included in the standard critical range.

Development and Evaluations of Advanced Emergency Braking System Algorithm for the Commercial Vehicle

Abstract: This paper presents a development and evaluations of the Advanced Emergency Braking System (AEBS) Algorithm for the commercial vehicle. The AEBS is the system to slow the vehicle and mitigate the severity of an impact when a rear end collision probability is increased. To mitigate a rear end collision of the commercial heavy truck, the AEBS comprises of a millimeter wave radar sensor, CCD camera and vehicle parameters of which are processed to judge the likelihood of a collision occurring. If the likelihood of a rear end collision with an obstacle is judged as probable, warning signals are provided to alert the driver by the AEBS algorithm. If driver fail to react to the warnings when the collision likelihood is judged as being high, the AEBS algorithm applies autonomous braking in order to reduce the impact speed. To demonstrate the control performance of the proposed AEBS algorithm’s, longitudinal vehicle model of the commercial target vehicle was developed by using the real vehicle’s test data and vehicle dynamics. Also, closed-loop simulation of the AEBS was conducted. In order to indicate the safety level of the driving situation, new safety indexes are suggested. From the simulation result and analysis using this safety indexes, it is shown that proposed AEBS algorithm can enhance the commercial heavy truck's longitudinal safety in the dangerous driving situation which can be occurred rear-end collision. INTRODUCTION Road safety is a major concern in most countries and the attention is turning towards active safety system that is not only developed to reduce the consequences of accidents but also to reduce the number of driver errors and thereby the number of accidents. In case of Korea, there is the unenviable record being one of the highest traffic accidents and fatality rates. In 2009, there were 5,838 fatalities on the road.[1] Therefore, a new and systematic approach to safety system is necessary to reduce traffic casualties. In this point of view, an Adaptive Cruise Control (ACC) system for the passenger vehicle had entered the market to mitigate the consequences of an accident and to reduce the number of fatalities among car occupants. Especially, with truck-related accidents are made up a relatively large part of all road fatalities. In 1998 heavy goods vehicles were involved in 17% of all road accident fatalities despite making up just 7% of the traffic on the roads of Great Britain[2]. Also, according to Swedish and European authorities, approximately 13000 lives are lost in Europe yearly in traffic accidents involving Heavy Goods Vehicles. 40% of these fatalities are unprotected road users, 6% are truck drivers, and 54% are drivers and passengers of cars.[3] Hence, an Autonomous Emergency Braking System (AEBS) for trucks is able to not only decrease the truck-related accidents, but also lead the reduction of road fatalities. [4] To assure real road safety improvements by the AEBS, the relationship between changes with and without of the AEBS in the same driving situation

Rear-end collision prevention system of rail train

Abstract: The utility model discloses a rear-end collision prevention system of a rail train, which is characterized by comprising a locomotive and rails. The locomotive comprises a remote transmitting radio station mounted on a train head, a master control module, a speed sensor, another remote transmitting radio station mounted on a train tail and a rail number transmitting module. Each rail consists of a group of roadside rail changing identifier nodes which are mounted on track sleepers and used for differentiating train driving directions and reporting the vehicle driving directions to the master control module. The rear-end collision prevention system can automatically obtain the distance between trains on the same rails in a high-density and fast railway operation network, reports the distance to train operating personnel, simplifies work procedures of the operating personnel, helps the operating personnel to timely obtain effective and correct information, greatly reduces probability of rear-end collision of railway trains, and improves safety of railway traffic.

Method for protecting occupants of e.g. electric car during rear-end collision of car, involves performing adjustment of seat backrest such that impulse is transmitted to occupant and occupant is moved in traveling direction of vehicle

Abstract: The method involves detecting a rear-end collision of a vehicle (1). A seat backrest (2.1) of a vehicle seat (2) is moved in a direction of an occupant (3) using an electromotor (5) for adjusting an individual sitting position by power supply voltage and for adjusting the seat backrest in the direction of the occupants with a high power supply voltage when the rear-end collision of the vehicle is detected. The adjustment is performed such that an impulse is transmitted to the occupant by the seat backrest and the occupant is moved in a traveling direction of the vehicle. An independent claim is also included for a device for protecting occupants of a vehicle.

Probabilistic Analysis and Risk Evaluation of Highway Rear-end Collision

Abstract: In terms of car-following critical condition,the characteristics of freeway rear-end mechanism was analyzed.The four kinds of situation of freeway rear-end collision were studied and the quantified index of rear-end collision risk was inferred according to the rear-end collision kinetic theory.Considering the random effect of driver's reaction time,brake deceleration,the Monte Carlo method was used to calculate the value of rear-end collision risk.The scope of threshold value was then obtained by fuzzy clustering method.The results can provide the theoretical foundation for early warning of freeway driving safety.

Method for improving operation density of rail vehicle and preventing mutual collision and rear-end collision

Abstract: The present invention provides a method for improving operation density of rail vehicles and for preventing head-on collision and rear-ending collision. Said method divides a rail line into equidistant electronic zones, the length of a zone being greater than the shortest safe distance between two running vehicles. Said method installs a locomotive passing detection alarm device in each zone, when a locomotive travels at high speed on the rail, the locomotive passing detection alarm device corresponding to the zone occupied by the locomotive itself will simultaneously access adjacent front and back zones, and determine whether the two adjacent zones are simultaneously occupied by locomotives. If the two adjacent. zones are simultaneously occupied by locomotives, the locomotive passing alarm device will send an alarm signal to the locomotives to warn or otherwise take measures. The aforesaid method can avoid locomotive head-on collision and rear-end collision and increase transportation density according to the vehicle speed and distance at the same time, thus improving the transportation efficiency.

Seat device for absorbing shock when vehicle collides

Abstract: PROBLEM TO BE SOLVED: To solve a problem that a structure of a conventional shock absorbing type seat rail is a shock absorbing mechanism of only a seat, and not resistant to a shock since a conventional shock absorbing type seat rail has a structure of an upper rail movably arranged on a lower rail and an operation lever arranged on the upper rail, and has the structure of reducing damage at an impact while not impairing the restricting performance of an occupant by movably supporting the upper rail by the operation lever and by making the upper rail movable by the compression of a movable member out-fitted to the operation lever at a rear end collision (in impacting).SOLUTION: A seat slide device of a vehicle includes a fixed rail, an intermediate rail and a moving rail. In the seat device, the moving rail moves with the intermediate rail as a guide in a head-on collision and a rear-end collision (at a shock), a seat back forwardly falls or backwardly falls by the advance/retreat of the moving rail, and the shock is absorbed at the impact when a seating part of a seat sinks in.

Rear structure of vehicle having airbag device

Abstract: PROBLEM TO BE SOLVED: To provide a rear structure of a vehicle having an airbag device capable of effectively protecting an occupant's head part, by deploying an airbag between a rear vertical wall part of a vehicle rear part and a seat arranged in the front side vicinity of the rear vertical wall part, at the time of a rear end collision of the vehicle. SOLUTION: The seat 104 is arranged in the front side vicinity of a back door 301, and the airbag 306 is deployed between the seat 104 and the back door 301 in the rear end collision of the vehicle 101, and when a lower frame part 115d of a headrest support structure 111 receives a backward load in the rear end collision of the vehicle 101, an upper frame part 115c of the headrest support structure 111 is moved forward with connecting tools 118a and 118b for rotatably connecting an upper part of the headrest support structure 111 to a vehicle body sidewall 105 as a rotational fulcrum, and a headrest 109 installed in the upper frame part 115c is moved forward, and a space between the headrest 109 and the back door 301 is expanded in the longitudinal direction, and the head part of the occupant is supported. COPYRIGHT: (C)2011,JPO&INPIT

Safety Following Space Modeling and Speed Control on Highway

Abstract: Due to the rapid development of economics and society, China has witnessed increasing highway accidents, especially rear end collisions that mainly caused by over-speeding or too close following distance. Based on the vehicle dynamic analysis, therefore, a 3 step-based safety following space identification model according to Mazda vehicle is proposed to describe the brake performance and three driving states are taken into considering, including total following state, part following state, and three-kind extreme states. Then, a self-adaptive fuzzy reasoning model is used to control the traveling speed so as to adjust the traffic flow as smoothly as possible. The Matlab simulation results shows this proposed fuzzy control model helps minimize the occurrence probability of rear-end collision on highway and improve the overall traffic safety performance and management level.

Research on Fuzzy Control Rule of Anti-Vehicle Rear-End Collision by Matlab and Simulink

Abstract: Nowadays when automobiles become popular to millions of households, its hidden trouble of road safety seems to be more serious. Traffic accidents happen frequently these years with the increase construction of highway and expressway, and they have done great harm to drivers as well as our society. This paper studies the fuzzy control rule of anti-vehicle rear-end collision on the base of Matlab and Simulink software, and the relative measures have also been explored and put forward.

Rear-end collision warning device for vehicle

Abstract: PROBLEM TO BE SOLVED: To provide a rear-end collision warning device for a vehicle which can warn an approaching vehicle behind by a structure more simple than a conventional one.SOLUTION: The rear-end collision warning device 1 for a vehicle includes a solar cell 10, a control part 20, a drive part 30, and a light emission part 40. The solar cell 10 is arranged and is turned backward on an end of the own vehicle so as to receive light emitted from the vehicle behind. The control part 20 determines whether it is night or day at the moment based on a power generation amount signal of the solar cell 10. The control part 20 determines whether the vehicle behind approaches or not based on the power generation change amount which is a temporal change of a power generation amount when it is night. When the vehicle behind approaches, the control part 20 outputs a light emission instruction signal for instructing light emission of the light emission part 40 to the drive part 30. The drive part 30 makes the light emission part 40 emit light by power generated by the solar cell 10 with headlight light upon receiving the light emission instruction signal.

Rear-end collision preventive safety device

Abstract: A rear-end collision preventive safety device is mainly characterized in that the front end of a hydraulic damping device is connected with an automobile bumper via a high-rigidity spring, indicator lamps of an alarming device are mounted in a vehicle and a rear window of the vehicle, a safety belt locking device is fixed on a seat of the vehicle via bolts, and an X-ray transceiver is connected with a vehicle body via bolts. The rear-end collision preventive safety device can effectively make up safety protection bug when in brake failure.

Simple rear-end collision prevention device for vehicles

Abstract: The utility model discloses a simple rear-end collision prevention device for vehicles, which comprises a controller, a throttle sensor, a brake sensor, a vehicle tail LED warning lamp and a switch. During the driving, the vehicle tail LED warning lamp gives different forms of warnings in case of releasing a throttle or stepping on a brake and advancing a throttle and in case of emergency. The device has a simple structure and can achieve the purpose of providing eye-catching popular warnings before braking and in case of emergency during running of a vehicle, so as to help drivers and pedestrians behind the vehicle to make a correct judgment in advance and effectively avoid vehicle rear-end collision and other safety accidents.

WITkit - Whiplash injury risk claims, methodology and theory of operation

Abstract: Claims for whiplash type injuries in most motorised countries cost more than all other injury claims put together. In Britain changes in the legal process within the last 10 years have led to a 50% increase in such claims. When followed up in detail a proportion of such claims have been shown to be invalid. The aim of this research is to develop an analytical technique for assessing the severity (delta-v, average acceleration and other parameters) of an impact to a car involved in a low speed rear end collision. That information, when combined with other factors (i.e. gender, occupant position and posture, seat performance and published data on injury incidence) allow the injury risk to be assessed for each given case. The aim is to provide a filter which will identify those cases where the crash severity is so low that the chances of a whiplash injury are remote. This paper presents a new way to combine the state of the art in whiplash research into one system using damage severity estimation, seat performance information and published modifier data for factors which influence the likelihood of whiplash in rear end collisions.

Early warning device for preventing automobile from rear end collision

Abstract: The invention discloses an early warning device for preventing an automobile from rear end collision, belonging to the technical field of automobile running manipulation safety control. The early warning device for preventing the automobile from rear end collision mainly comprises an automobile accelerator pedal damper, a pressure sensor, a vacuum degree sensor and an electronic control unit. During the normal use of an automobile accelerator, the automobile accelerator is uniformly treaded for acceleration or deceleration; and when a driver discovers an emergency, sudden change occurs on theaccelerator so that an automobile danger emergency caution flashlight which is connected with the sensors is immediately and automatically switched on and an early warning signal is given to a running follow-up automobile. After discovering the danger signal of the automobile, the driver of the follow-up automobile takes measures immediately so as to avoid rear end collision and realize the aim of preventing the automobile from being collided. The early warning device for preventing the automobile from rear end collision is simple in structure, convenient for use and convenient for the popularization of the existing automobiles.

Heavy vehicle path stability control for collision avoidance applications

Abstract: The current state of the art for Advanced Driver Assistant System (ADAS) in heavy trucks is based on pure braking interventions for rear-end collisions on highways and rural roads. In order to expand the scope to more general target scenarios, it is necessary to integrate braking and steering for more advanced interventions. The investigated target scenarios, which will cover not only rear-end collision, but also lateral conflicts and head-on collisions, are developed and prioritized based on accident statistics. For advanced interventions not only the speed of the truck but also the path should be under control. In fact the appropriate path controller should be applicable to various target scenarios and robust to variations in loading conditions. The overall goal of this work is to develop a path controller for a heavy vehicle based on integrated braking and steering, for collision avoidance application in the prioritized target scenarios. To determine the potential of various actuator configurations to avoid the collision, an optimal control problem is formulated and solved for each scenario. The solution provides the requirements for the actuators and a bench mark for the developed optimal path controller. For vehicle implementation a robust controller which is capable of dealing with disturbances and uncertainties is needed. The performance of the path controller in each target scenario and the sensitivity to key parameters is studied by performing the simulation on a detailed vehicle model. The target scenarios will be further prioritized based on the performance and robustness of the integrated braking and steering path controller. As a result of this work, a path stability controller which is capable of integrating the steering and braking actuators during the manoeuvre will be provided. Therefore a robust path controller for Advanced Driver Assistant System can be provided which can handle not only rear end collision scenarios but also head-on and lateral conflicts for heavy trucks. This work can be a new constructive step in Heavy truck active safety and autonomous collision avoidance manoeuvre that extends the area in which active safety system participate to reduce the amount of accidents as much as possible.

Device for protecting occupant in vehicle, has headrest and/or portion of seatback, which are movable in direction of vehicle occupant so that occupant in collision direction is accelerated or deployed before coupling to vehicle movement

Abstract: The device has a vehicle seat (1) which is provided with a seat cushion (1.1), a seatback (1.2) and a headrest (1.3). An inflatable air bag is arranged within the seatback, with which the vehicle ahead, rear end collision or event of the rear end collision with pressurized gas is detected. The headrest and/or portion of the seatback are movable in the direction of vehicle occupant. The vehicle occupant in collision direction is accelerated or deployed before coupling to the vehicle movement. An independent claim is included for method for protecting occupant in vehicle.

차량의 후방추돌시험을 위한 시나리오 및 가상환경평가 개발연구

Abstract: Vehicle safety device such as active headrest and rear detection system has been developing as people are interested about rear end collision more than before. However, there is not any standard or criterion in order to evaluate vehicle safety device for rear end collision. Also there is not test protocol about rear end collision in vehicle experiment. Therefore, this research developed scenario for experiment about rear end collision in vehicle experiment. Also this research evaluated dangerousness about vehicle test and fitness about re-enacting rear end collision using scenario developed using commercial software (PC-Crash) which can re-enact vehicle collision in virtual vehicle experiment. Scenario developed according to statistics from National Highway Traffic safety Administration and German In-Depth Accident Study. Scenario has twelve cases which composed of Re-LVS (Rear end Leading Vehicle Stop), Re-LVM (Rear end Lead Vehicle Moving) and scenario for evaluation about malfunction of active headrest.