16 results about "Rear-end collision" patented technology

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.

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.

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.

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 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.

IMPROVED EMERGENCY BRAKING FOR MOTOR VEHICLES The present invention relates to a method for managing an automatic emergency braking function for a motor vehicle (2), comprising the following steps: a) real-time detection of a risk of frontal collision in the presence of an obstacle in front of the motor vehicle, by two front detection means (4, 6) of said motor vehicle; b) real-time estimation of whether automatic emergency braking could result in a risk of rear-end collision with a following vehicle, by a rear detection means (8) of the motor vehicle; c) triggering automatic emergency braking of the motor vehicle, when only one of the two front detection means identifies the obstacle in front and provided there is no risk of rear-end collision with the following vehicle in step b), or when both front detection means identify the obstacle in front. (Figure to be published with the abstract: Figure 1)

The invention relates to crash safety, which reduces the damage to the occupants through the use of sensors and equipment already present in the vehicle and is applicable in rear-end collisions with a stationary vehicle within defined limits.

A method and a device control a trailer-mounted vehicle. The method for controlling a trailer-mounted vehicle may include: determining, based on current motion information of a vehicle, a force acting due to a gradient of a trailer mounted to the vehicle and an inertial force of the trailer, determining Z-axis momentum of the vehicle caused by the trailer based on the force acting due to the gradient of the trailer; the inertial force of the trailer, and the current motion information of the vehicle; determining a compensation amount of the Z-axis momentum based on target motion information of the vehicle and the Z-axis momentum; and controlling at least one of a drive source and a brake source so that a lopsided acceleration or a lopsided deceleration is output from a corresponding wheel for implementing the compensation amount Z-axis momentum.

Method for displaying a braking distance, calculated from a reaction time and the time required for braking, on a display device (1) of a vehicle (6) in the form of a horizontal bar (8, 9), wherein a first horizontal bar (8) is displayed in a virtual representation of the vehicle (6) and other road users (7) or objects in the environment in spatial relation to each other to represent a first braking distance, wherein a second horizontal bar (9) is additionally displayed, which represents a second braking distance, in which a change in the reaction time due to detected fatigue and / or distraction of the person driving the vehicle (6) is taken into account compared to the first braking distance, wherein the two horizontal bars (8, 9) are hidden when a road user (7) ahead is detected and displayed, wherein the two horizontal bars (8, 9) are always displayed despite the road user (7) ahead.if, given a specified theoretical maximum deceleration of the vehicle ahead (7), a rear-end collision could not be prevented even with the aid of brake assist systems in the event of a sudden deceleration of the vehicle ahead.

This invention discloses an electromagnetic collision avoidance protection system for vehicle emergency braking and its control method. The system includes electromagnetic coil actuators (1–5) integrated inside the front and rear bumpers of the vehicle, multi-source and logic trigger detection modules (8, 9, 10), a supercapacitor energy storage group (6), a main control ECU (7), and an optional vehicle network communication module (11). When the vehicle brakes suddenly and the estimated time to collision (TTC) is no more than 1.5 seconds, the system drives the electromagnetic actuators of the bumpers to generate a strong magnetic field within 10 milliseconds, forming an electromagnetic repulsion field (12) between the vehicle and the adjacent vehicle, serving as an additional non-contact collision avoidance buffer layer outside the braking system. The system supports two working modes: eddy current induction repulsion and dual-vehicle cooperative direct magnetic repulsion. It automatically adjusts the repulsion force in three levels according to the estimated time to collision and has an event data recording function. The system response time of this invention is no more than 10 milliseconds, which can provide effective physical collision avoidance protection within a very short time window in which the driver cannot react. It works in conjunction with existing safety systems such as AEB and ABS, significantly reducing the incidence and intensity of rear-end collisions, and has high engineering feasibility and application value.

A method and a device to control a trailer-mounted vehicle. The method for controlling a trailer-mounted vehicle may include: determining, based on current motion information of a vehicle, a force acting due to a gradient of a trailer mounted to the vehicle and an inertial force of the trailer, determining Z-axis momentum of the vehicle caused by the trailer based on the force acting due to the gradient of the trailer, the inertial force of the trailer, and the current motion information of the vehicle; determining a compensation amount of the Z-axis momentum based on target motion information of the vehicle and the Z-axis momentum; and controlling at least one of a drive source and a brake source so that a lopsided acceleration or a lopsided deceleration is output from a corresponding wheel for implementing the compensation amount Z-axis momentum.

The invention provides a secondary collision avoidance control system and method for a vehicle driven by a hub motor, and relates to the technical field of vehicle collision avoidance safety. Whether first rear-end collision occurs or not is detected through a collision detection sensor, if yes, a secondary collision avoidance control system is activated immediately, self-inspection of a power system, a steering system and sensors is conducted through feedback signals of a vehicle state sensor and all actuators, and the current damaged state of a vehicle is evaluated; according to the current damaged state of the vehicle, an active avoidance mode, a limited avoidance mode and a posture fine adjustment mode are selected, and secondary collision avoidance is completed. According to the method, secondary risk avoiding is ensured after the vehicle is stopped after rear-end collision, the system not only considers the state of the vehicle, but also needs to evaluate the surrounding traffic environment through the radar and / or the camera, and quantitative evaluation is performed to select the path with the lowest risk and the most sufficient space to complete risk avoiding. The objective of the invention is to improve the survival rate of passengers in serial rear-end collision accidents.