59 results about "Rear-end collision" patented technology

The present invention discloses an active collision avoidance method and vehicle-mounted electronic equipment based on a multi-level risk fusion potential field, comprising the following steps: 1: obtaining information about the vehicle and the surrounding environment; 2: predicting the driving trajectory of the vehicle and other vehicles; 3: judging the positional relationship between the trajectories of the vehicle and other vehicles; 4: if the trajectories intersect, calculating the intersection point in a fixed coordinate system; if the trajectories are parallel and there is a possibility of collision, calculating the rear-end collision point; 5: designing and constructing a risk domain of lane boundaries, static obstacles, dynamic vehicles, estimated trajectory intersection points and collision points in the surrounding environment; 6: performing real-time curvature constraints on the collision avoidance path, and planning a virtual force range within a small time period; 7: determining the optimal virtual force within the current time period based on the principle of low driving risk, and planning a real-time optimal local path; 8: obtaining continuous collision avoidance trajectories based on the optimal virtual forces planned in real time in different time periods; 9: repeating the above steps until the vehicle reaches a safe position.

Techniques for determining a rear end collision probability for a vehicle are discussed herein. The rear end collision probability can be determined based on data associated with the vehicle and an object proximate the vehicle, probability distribution data, and a vehicle maneuver value. The probability distribution data, which can be received, may represent a reaction time of the object and a maneuver value of the object. The rear end collision probability can be utilized to control the vehicle.

A structure (ST) is part of a three-wheeled vehicle (TM) with an electric drive unit and a rechargeable battery. It comprises two lower longitudinal members (LI), right and left, curved and coupled at the front (PVS) by lower cross members supporting the battery just before a rear (PRS), and two upper longitudinal members (LS), right and left, extending throughout this rear (PRS) and coupled to the lower longitudinal members (LI) by support members (PSL1-PSL2). Each of these upper longitudinal members (LS) includes at least one upward or downward corrugation (OV) framed by two straight sub-sections (SPR) such that, in the event of a rear-end impact, the OV and SPR transmit the vertical and longitudinal components of this force, respectively, in order to distribute the impact energy vertically and longitudinally. Figure 2

A method for preventing or mitigating rear-end collisions of a motor vehicle and potential multiple vehicle collisions includes locating, by a sensor system of the motor vehicle, an obstructing vehicle in the front of the motor vehicle located on a trajectory of the motor vehicle, the obstructing vehicle being characterized by a speed below a predetermined first speed threshold, equal to zero; braking the motor vehicle, by an automatic braking system of the motor vehicle, to stop at a predetermined safety distance from the obstructing vehicle; monitoring, by the sensor system, the rear of the motor vehicle for a trailing vehicle approaching the motor vehicle from behind, wherein the sensor system is configured to detect driving information of the trailing vehicle; and performing safety measures by a control system of the motor vehicle in case a rear-end collision is anticipated based on the detected driving characteristics of the trailing vehicle.

The objective is to obtain a vehicle rear structure that can suppress the deformation of a skeletal member formed integrally by casting during a rear-end collision of a vehicle whose rear body is composed of such a member. [Solution] A rear vehicle structure 10 comprises a frame member 20 integrally formed by casting and constituting the rear of the vehicle body, a side member 40 extending in the longitudinal direction of the vehicle and attached to the rear of the frame member 20, and a floor member 32 provided on the upper side of the side member 40 and having an elongated hole portion 38 with the longitudinal direction of the vehicle as its longitudinal direction, wherein the floor member 32 is fastened to the side member 40 by fasteners 18 inserted through the rearward portion of the elongated hole portion 38.

To provide a fuel cell vehicle which enables improvement of protection performance for a fuel tank against an impact caused by a rear-end collision.SOLUTION: A fuel cell vehicle 1 includes: a fuel cell 15; a plurality of fuel tanks 17 for storing a fuel gas of the fuel cell 15; a dilution device 19 which is disposed at the vehicle rear relative to the fuel tanks 17, spaced apart from the fuel tanks 17 and dilutes the fuel gas discharged from the fuel cell 15 with air; and a housing part 13 which is provided at the vehicle rear and houses the fuel cell 15, the fuel tanks 17, and the dilution device 19. The housing part 13 has a protection frame 53 provided between one of the fuel tanks 17 and the dilution device 19.SELECTED DRAWING: Figure 2

This invention belongs to the field of motor vehicle driving safety and discloses a rear-end collision warning system and method for roadside vehicles to avoid pedestrians. The warning system includes a pedestrian detection millimeter-wave radar and a vehicle detection millimeter-wave radar, which are electrically connected to the signal input terminal of a controller, and LED warning lights and a voice device, which are electrically connected to the signal output terminal of the controller. The warning system can determine the collision risk between the vehicle in front and the pedestrian, as well as the rear-end collision risk between the vehicle in front and the vehicle behind, based on the parameter information obtained by the pedestrian detection millimeter-wave radar and the vehicle detection millimeter-wave radar and the information preset in the controller. It then provides graded warnings to pedestrians and drivers of vehicles behind through the roadside LED warning lights and the voice device. The warning method solves the problem of the simultaneous occurrence of pedestrian collision and rear-end collision risks, and has high safety and high reliability.

The present invention discloses a vehicle speed guidance control method for the traffic safety area during the reconstruction and expansion of expressways based on gradient speed reduction, which relates to the field of intelligent traffic safety technology. The method includes obtaining the road traffic safety plan for the reconstructed and expanded traffic safety section, setting detectors and intelligent roadside units (RSUs), and connecting the vehicle information of passing vehicles to the high-speed server base station in real time. The speed preset value and section length of gradient speed reduction are determined according to the vehicle running speed, the rear-end collision threshold of the following vehicle, and the braking distance. Voice broadcast and vehicle speed guidance are provided to drivers with in-vehicle devices, and mobile device communication prompts are given to drivers without in-vehicle devices. This vehicle speed guidance method can effectively avoid traffic accidents caused by temporary braking behaviors at the ramp exits of the traffic safety section by guiding drivers to reduce speed through multi-level gradients, and ensure the safe passage of the reconstructed and expanded section.

To suppress a repair cost arisen at a time of low-speed rear end collision.SOLUTION: A vehicle body rear structure includes a pair of right and left rear side members 2 extending in a fore-and-aft direction with a space therebetween in a vehicle width direction. Each of the rear side members 2 includes a die-cast front member 10 forming a region on a front side of the rear side member 2, and a rear member 20 that is made from a sheet metal, has a front end 20a joined to the front member 10, has a rear end 20c joined to a rear bumper part 8, and forms a region on a rear side of the rear side member 2. The rear member 20 has a deformation origin part 24, which serves as an origin when the rear member 20 is folded and deformed due to input of a load from behind a vehicle, in a middle part 20b in the fore-and-aft direction, and is folded and deformed behind a joint part 30, at which the rear member is joined to the front member 10 in case of a rear end collision.SELECTED DRAWING: Figure 1

This invention provides a head and neck protection device for rear-end collisions, including a headrest seat, a first buffer assembly, and a limiting mechanism. When a rear-end collision occurs, the impacted vehicle accelerates forward, causing the head of an occupant to strike the first cushion. Upon impact, the first cushion drives a guide seat to move, compressing multiple sets of buffers. At this time, the first cushion and the multiple buffers work together to cushion the impact on the head, improving the device's buffering effect and reducing head injuries. Simultaneously, the movement of the guide seat drives the fixing assembly to release the limiting rod. The driving component then drives the limiting rod to rotate to a second state, so that the arc-shaped portion of the limiting rod faces the first cushion. When the head moves forward due to the impact reaction force, the limiting rod can contact the head, thereby limiting large-scale forward head movement, preventing neck strain, and improving the device's protective effect.

Electric vehicles with battery management and sensors are provided. An electric vehicle may be configured to charge individual main batteries using individual intermediate batteries while the electric vehicle is in operation via suitable control of switches. An electric vehicle may be configured to charge batteries using a regeneration current based on sensor data from sensors, such one or more of a camera, an accelerometer, a gyroscope an atmospheric pressure sensor and a Hall sensor. An electric vehicle may be configured to avoid rear end collisions based on images from a rear-facing camera.

The invention relates to the technical field of automobile collision safety, in particular to an automobile rear-end collision automatic protection system and method.The automobile rear-end collision automatic protection system comprises a central processing unit, a vehicle-mounted camera, an anti-collision radar, a speed sensor and a suspension executing mechanism, the anti-collision radar, the speed sensor and the suspension executing mechanism are all in signal connection with the central processing unit, the central processing controller comprises a storage unit and an analysis unit, the storage unit stores data, the analysis unit compares the stored data with real-time numerical values, and the central processing unit sends the comparison result to the central processing unit. The problem that at the present stage, an automobile collides with a truck at too high speed per hour and enters the bottom of the truck is solved, and the survival rate of personnel in a cockpit is greatly increased.

To suppress a rear-end collision with a following vehicle during deceleration of a vehicle by deceleration stop control.SOLUTION: The driving support control device 6 of the vehicle 100 is configured to perform the driving support for controlling at least the brake actuator 52 of the vehicle 100 to stop the vehicle 100 when it is determined that the driver of the vehicle 100 is in the abnormal state in which it is difficult for the driver to continue driving the vehicle 100, and control the brake actuator 52 such that the deceleration of the vehicle 100 decreases when the inter-vehicle distance between the vehicle 100 and the following vehicle increases stepwise during the deceleration by the driving support.SELECTED DRAWING: Figure 1

This design makes it easier for the occupant's back to slide into the seatback during a rear-end collision. [Solution] The seat back fan mounting structure comprises left and right lumbar wires 36 stretched between the upper and lower parts of the seat back frame 22 of the vehicle seat, a lumbar support mechanism 42 attached to the left and right lumbar wires 36, a mounting bracket 62 positioned on the upper side of the seat relative to the lumbar support mechanism 42, a fan 66 attached to the rear side of the seat of the mounting bracket 62, and a mounting wire 80 extending from the upper end of the lumbar support mechanism 42 and having left and right mounting portions 82 to which the left and right sides of the mounting bracket 62 are attached. The left and right mounting portions 82 of the mounting wire 80 deform when a load is applied to the mounting bracket 62 from the front side of the seat.

The invention provides a cloud control method for preventing vehicle rear-end collision. The method comprises the following steps: determining a relative position relationship of each vehicle driving on a traffic lane based on driving state parameters received from each vehicle and evaluating a rear-end collision risk of each vehicle (S1); when the rear-end collision risk of the vehicle is higher than a preset risk threshold value, marking a rear-end collision risk level of the vehicle based on the evaluated rear-end collision risk (S2); and in response to a brake signal received from the first vehicle, based on the relative position relationship of each vehicle, sending a first control instruction for preventing vehicle rear-end collision to each marked vehicle running behind the first vehicle on the traffic lane where the first vehicle is located (S3). According to the method and the device, when the brake signal of the vehicle on a certain traffic lane is received, the control instruction is immediately issued to the corresponding marked vehicle, so that longer response time is gained for implementing countermeasures for each marked vehicle, and serial rear-end collision accidents among the vehicles are effectively avoided.

Systems and methods for identifying potential collisions in which another vehicle may collide with the AV. The AV detects the other vehicle and determines the other vehicle speed, acceleration, and trajectory. The AV determines that there is a risk of collision if the other vehicle continues on its current trajectory at its current speed and its current acceleration. When an AV determines there is an imminent risk that another vehicle may collide with the AV, the AV can initiate a honk to alert the other vehicle of the potential collision. In some examples, the AV can identify a potential rear end collision, and the AV can honk at the vehicle approaching it from behind. In other examples, the approaching vehicle can come from any direction. Honking is designed to be limited so that an AV does not initiate too many honks.

Techniques for determining a rear end collision probability for a vehicle are discussed herein. The rear end collision probability can be determined based on data associated with the vehicle and an object proximate the vehicle, probability distribution data, and a vehicle maneuver value. The probability distribution data, which can be received, may represent a reaction time of the object and a maneuver value of the object. The rear end collision probability can be utilized to control the vehicle.

A vehicle brake light device includes a brake light that is mounted to a rear end of a vehicle. The brake light is turned on when a braking system of the vehicle is engaged thereby facilitating a driver of a following vehicle to be alerted that the vehicle is braking. Additionally, the brake light is progressively illuminated along a length of the brake light in accordance with a degree to which the braking system is being engaged thereby facilitating the driver of the following vehicle to be alerted to the degree to which the vehicle is braking such that the driver of the following vehicle can avoid a rear end collision with the vehicle. Furthermore, the brake light is laterally elongated to extend across a majority of a width of the rear end of the vehicle to enhance the driver of the following vehicle's ability to perceive the brake light.

Method for operating a collision avoidance system (3) of a vehicle (1), wherein, depending on a collision-critical situation, an intervention strategy for reducing the severity of a detected collision imminent between the vehicle (1) and a collision object is determined, and depending on a predicted collision angle (α) between a motion vector (B1) of the vehicle (1) and another motion vector (B2) of the collision object at a predicted collision time, a distinction is made between an intervention strategy for accident reduction, an intervention strategy for the time of collision, and an intervention strategy for rear-end collision. wherein, after determining the decision strategy by means of the collision avoidance system (3), an emergency braking function or an emergency evasive maneuver function is activated depending on a determined overlap area between the vehicle (1) and the collision object at the predicted collision time, and wherein a decision to perform automatic emergency braking or automatic emergency evasive maneuvers is made depending on a predetermined threshold value with respect to the critical overlap area between the vehicle (1) and the collision object at the predicted collision time. characterized in that a critical overlap area is determined for each intervention strategy, from which point onwards, despite initiated emergency braking, the collision between the vehicle (1) and the collision object is unavoidable and that if it is determined that the threshold value with respect to the critical overlap area per intervention strategy is undershot, the emergency avoidance function of the vehicle (1) is activated.

The invention relates to the technical field of storage robots, solves the technical problems that robot visual identification is influenced by a dark light environment and deviates from a pre-planned cooperative path, and safety accidents such as rear-end collision and collision are easily caused, and particularly relates to a visual identification method and system of a storage robot. Comprising the steps of obtaining multiple continuous target images and marking an identification light source as a target light source; calculating movement characteristic parameters; obtaining a cooperative path, and predicting a side parameter probability that the target light source deviates from the cooperative path according to the movement characteristic parameters; calculating a comprehensive risk index of the collaborative operation; and the risk level of collaborative operation among the multiple storage robots is judged. According to the method, the cooperative operation of the multiple storage robots can be dynamically identified according to the identification light source in a dark environment, the speed, the route and other information of each storage robot are analyzed, light source information and other sensor data can be effectively integrated, and analysis is carried out according to risks possibly caused during cooperative operation.

The invention relates to an underride protection device (6) for a motor vehicle (1), comprising at least one protective element (7, 8, 9) and a fastening device (10, 17, 19) by means of which the protective element (7, 8, 9) is movably held on the motor vehicle (1) between an initial position (11) and a protective position (12), wherein in the protective position (12) in the event of a rear-end collision of the motor vehicle (1) with a truck the protective element (7) can be acted upon by the truck as an energy absorption element.

The invention discloses a self-adaptive avoidance method for coping with vehicle rear-end collision and a corresponding device. The method comprises the following steps: monitoring a rear view range through a vehicle-mounted rearview sensor, identifying a rear vehicle, calculating relative parameters of a target self-vehicle and the rear vehicle, determining that the target self-vehicle has a potential rear-end collision risk by combining vehicle information of the target self-vehicle, and when the target self-vehicle is in a static state and a vehicle exists in front, starting the vehicle-mounted rearview sensor; calculating and executing a first deflection angle of the target self-vehicle, so that the target self-vehicle generates a preset lateral deflection trend, and generates a deflection displacement towards the lateral front side when the rear vehicle collides, thereby reducing the collision to the front vehicle; and when the target self-vehicle is in a low-speed driving state and the rear-end collision of the front vehicle and the rear vehicle is inevitable, planning and executing an avoidance track of the lateral target adjacent lane so as to avoid the rear-end collision of the rear vehicle and the collision of the target adjacent lane. According to the invention, timely avoidance control can be carried out on the rear vehicle, driving accidents are reduced or avoided, and the driving safety is improved.

The invention, which belongs to the technical field of unmanned driving, discloses an unmanned driving collision early warning system comprising a feature classifier construction training module, a vehicle acquisition module, a vehicle detection module, a vehicle image size estimation module, an inter-vehicle distance estimation module and an early warning module. According to the method, the vehicle image with the standard size is shot, the focal length of the camera is estimated based on the standard size and the image size of the vehicle, and then the actual distance between the vehicle and the front and rear vehicles is estimated based on the vehicle size in the vehicle image shot in the unmanned driving process, the known included angle between the camera and the horizontal line and the known focal length and height of the camera. Compared with the prior art, the system specially aims at collision early warning of vehicle rear-end collision, the hardware structure is simple, the software algorithm is not complex, and the risk of unmanned rear-end collision can be effectively reduced with low cost.

The present invention discloses an automobile seat bracket structure with collision energy absorption characteristics, which includes a seat cushion, a height adjustment device and a mounting base. The height adjustment device is provided with a height adjustment driving component and two sets of link components; the height adjustment driving component can adjust and lock the rotation angle between the rear link of one set of the link components and the rear bracket; and it is characterized in that: a grid-type energy absorption structure is provided on the rear bracket of the other set of the link components. The present invention can absorb the impact energy of the occupant on the automobile seat during a rear-end collision of the automobile through the grid-type energy absorption structure, so that the energy acting on the seat cushion of the automobile seat is preferably transferred to the grid-type energy absorption structure, ensuring that other components of the seat cushion of the automobile seat, especially the seat side plates on both sides, will not undergo large deformation during a rear-end collision of the automobile, solving the safety hazard that the seat side plates of the automobile seat are prone to deformation and damage during a rear-end collision, and improving the safety performance of the automobile seat.

Systems and methods for identifying potential collisions in which another vehicle may collide with the AV. The AV detects the other vehicle and determines the other vehicle speed, acceleration, and trajectory. The AV determines that there is a risk of collision if the other vehicle continues on its current trajectory at its current speed and its current acceleration. When an AV determines there is an imminent risk that another vehicle may collide with the AV, the AV can initiate a honk to alert the other vehicle of the potential collision. In some examples, the AV can identify a potential rear end collision, and the AV can honk at the vehicle approaching it from behind. In other examples, the approaching vehicle can come from any direction. Honking is designed to be limited so that an AV does not initiate too many honks.

The utility model relates to the technical field of semitrailers, in particular to a semitrailer and a multifunctional rear protection device arranged at the tail of a frame of the semitrailer, and the multifunctional rear protection device comprises an upper crosspiece, a lower crosspiece and stand columns. The upper crosspiece extends in the transverse direction and is arranged at the tail of the frame, and the top face of the upper crosspiece is flush with the top face of the frame. The lower crosspiece extends in the transverse direction and is located below the upper crosspiece in a spaced mode. The stand columns are arranged between the upper crosspiece and the lower crosspiece, the stand columns obliquely extend downwards from the head end to the tail end, the lower crosspiece exceeds the upper crosspiece towards the tail end, and therefore an anti-collision buffering function area can be formed at the tail of the frame of the semitrailer. When a rear-end collision accident happens to the semitrailer, the multifunctional rear protection device can be in contact with a rear vehicle preferentially, and the impact force of the rear vehicle on the frame is reduced through the anti-collision buffering function area, so that the rear vehicle is prevented from directly colliding with the frame and a tank body on the frame, the rear vehicle and the tank body on the frame can be effectively protected, and the transportation safety of the semitrailer is improved.

The present invention relates to the integration of various sensors used in vehicles into a single sensor. The invention specifically relates to the development of a system using a single piece of equipment to enhance safety during reverse maneuvers through a precise rear-view alarm and parking assistance, hands-free trunk-opening (Radar Kick Sensor), blind spot detection (Blind Spot Detection BSD) to prevent accidents by detecting vehicles in the driver's blind spots, and a rear pre-crash warning system (Rear Pre-crash Warning System RPCW) that alerts the driver of possible rear-end collisions.

To provide a control device of a vehicle that can operate an automatic brake more properly.SOLUTION: A control device of a vehicle makes an automatic brake generate braking force, when an own vehicle is likely to collide with an obstacle in front of the vehicle. The control device calculates rear-ender determination value DEC indexing likelihood that a following vehicle may rear end the own vehicle during deceleration of the own vehicle by the automatic brake, and determines whether or not the following vehicle is likely to rear end the own vehicle, on the basis of a result of comparison of the rear-ender determination value DEC with a predetermined threshold Dth1 for determination, and when determining that the following vehicle is likely to rear end the own vehicle, restricts the own vehicle from being decelerated by the automatic brake. The control device obtains weight data on the following vehicle through communication that is executed between the own vehicle and the following vehicle, and variably sets the threshold Dth1 for determination depending on weight of the following vehicle shown by the weight data. (Dth11 and Dth12).SELECTED DRAWING: Figure 6