73 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.

The invention belongs to the technical field of vehicles, and discloses a rear seat fixing point enhanced structure and a vehicle, the rear seat fixing point enhanced structure comprises a rear seat front cross beam assembly, a rear floor middle cross beam and a rear seat lower cross beam assembly which are arranged in parallel, and the rear seat front cross beam assembly and the rear floor middle cross beam are connected with each other through a middle seat mounting bracket; the rear floor middle cross beam and the rear row seat lower cross beam assembly are connected with each other through the rear floor longitudinal beam welding assembly, the middle row seat mounting bracket and the rear seat front cross beam assembly are arranged perpendicular to each other, and the rear floor longitudinal beam welding assembly and the rear seat front cross beam assembly are arranged perpendicular to each other. Mounting points of the rear row seats are firmer, the cross beams and the longitudinal beams which are connected with each other enhance the overall strength and rigidity of a vehicle body, the buffering and energy dispersing capacity of the vehicle in the front face, the side face and rear-end collision of the vehicle is greatly enhanced, and the safety of the whole vehicle is improved.

The invention relates to an active pre-tightening type safety belt performance test system and method based on dual modes, and belongs to the technical field of mechanical engineering. A test trolley receives an input whole-process acceleration waveform under the dual modes of emergency braking and rear-end collision and then starts an active pre-tightening type safety belt performance test; triggering a pre-tightening signal to start an active pre-tightening motor controller to pre-tighten and pull back the safety belt, and accelerating the test trolley to a collision position according to the acceleration waveform in the emergency braking stage of the acceleration waveform of the whole process, and then the deceleration waveform generator performs deceleration braking on the trolley according to the acceleration waveform in the rear-end collision stage in the whole-process acceleration waveform, and the data acquisition analyzer acquires data of a plurality of sensors in the sensor network in the test process in real time to generate a test result. According to the technical scheme, the requirement for bidirectional change of the acceleration of the trolley under the emergency braking rear-end collision working condition can be met, and the test requirements of different vehicle types are met.

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.

The invention relates to the field of monitoring and alarming, and particularly discloses an automatic monitoring and alarming system and method for a traffic accident, and the method comprises the steps: firstly obtaining highway real-time video stream data collected by a front-facing camera, a vehicle obstacle distance echo signal collected by an ultrasonic sensor, and a wireless signal of a nearby vehicle collected by a vehicle-mounted probe; and then feature extraction and correlation analysis are carried out on the three by using a deep learning technology, and finally a classification result is obtained through a classifier to judge whether a traffic accident alarm is sent out, so that traffic accidents such as rear-end collision and collision are reduced through timely early warning, and the overall road traffic safety is improved.

The utility model discloses a massage assembly which has a buffering function so as to prevent a massage module from excessively pressing a human body at the moment of rear-end collision. A massage assembly comprises a massage module and a mounting frame, a plurality of elastic elements are arranged between the massage module and the mounting frame, one end of each elastic element is fixedly connected with the massage module, and the other end of each elastic element is fixedly connected with the mounting frame. The elastic element bears the gravity of the massage module so that the massage module can extend to the side of the installation frame in an overhanging mode.

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.

The frame comprises longitudinal beams, a plurality of cross beams, a mounting cross beam and a battery pack protection longitudinal beam, the cross beams are connected between the two opposite longitudinal beams respectively and distributed at intervals in the longitudinal direction, the mounting cross beam is connected between the two opposite longitudinal beams and arranged on the rear sides of the cross beams, and the battery pack protection longitudinal beam is arranged between the mounting cross beam and the battery pack protection longitudinal beam. The installation cross beam is provided with a battery pack installation part, and the battery pack protection longitudinal beam is connected to the installation cross beam and extends backwards. By arranging the mounting cross beam on the rear side of the cross beam, arranging the battery pack protection longitudinal beam on the mounting cross beam and extending backwards, the battery pack can be protected from being damaged by rear-end collision, and short circuit or fire of the battery pack can be avoided; therefore, the performance of the battery pack can be ensured, the service life of the battery pack can be prolonged, and the safety of a vehicle can be improved.

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.

Radar and LiDAR sensors play important roles in autonomous vehicles and ADAS (advanced driving assistance systems) in automobiles, however, they can only detect objects in view (line-of-sight). For example, when three vehicles are driving on road in a same lane, and if the first vehicle suddenly brakes, the third vehicle cannot detect it by regular radar and / or LiDAR because the second vehicle in front blocks the view. This invention discloses system and method to enable radar and / or LiDAR to detect vehicles on road that are blocked in view by another vehicle by specially configured active beacon transmitters, and reduce risks of rear-end collisions.

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.