45results about How to "Achieve collision avoidance" patented technology

The present invention provides a longitudinal collision avoidance reminding and automatic following integration system and a method, and belongs to the vehicle collision avoidance field. The system comprises a collision avoidance mode selection unit, a sensing unit, a central control ECU unit, a reminding unit and an execution unit. The sensing unit obtains the type and number of front barriers, the position of a target vehicle in a lane line, the relative speed and the relative distance of an own vehicle and the front barriers, sends the obtained information to the central control ECU unit, carries out the comprehensive determination of a safe state by a D-S evidence theory, and finally determines the number of the front barriers, the relative distance vrel, the relative speed srel and an acceleration a of the own vehicle and the front target vehicle, thereby reducing the false alarm situations of a vehicle-mounted radar and a vehicle-mounted camera furthest. The central control ECU unit generates an instruction, and the reminding unit and the execution unit execute the correlated actions. The system and method of the present invention enable the false alarm rate to be reduced and the response speed and the comfort level of the drivers to be improved simultaneously, at the same time, satisfy the collision avoidance demands on different road conditions.

The invention relates to a laser radar-based active obstacle detection system and method for trains in tunnels. The system includes a laser radar, a vehicle-mounted host, a network switch, a display device, an alarm device and a braking device; the vehicle-mounted host passes through the network switch Respectively connect the lidar and the display device at the front of the car, and the on-board host is respectively connected to the alarm device and the braking device through the digital output interface; The spatial characteristics of the track area, and detect the obstacles in front of the train based on the identified track area. Compared with the prior art, the present invention has the advantages of simple deployment, light structure, low cost, good real-time performance, stable and accurate detection results, safety and reliability, and the like.

The invention discloses a concave-convex point type broadside collision prevention and freezing prevention compound structure. A second buffer pad layer, a concave-convex collision prevention plate and a first buffer pad layer are sequentially arranged in the direction from an inner ship broadside plate to an outer ship broadside plate. The hollow protruding portion and the hollow concave portion of the concave-convex collision prevention plate, the gap between the concave-convex collision prevention plate and each buffer pad layer and the gap between the concave-convex collision prevention plate and the outer ship broadside plate are filled with freezing prevention materials. The concave-convex point type broadside collision prevention and freezing prevention compound structure can sufficiently absorb energy in all the directions, and the space utilization rate is greatly improved; the structure is simple, construction is convenient and rapid, and ships in an ice zone are protected within a short period; and through sufficient utilization of the excellent characteristics of the various compound materials, the dual effects of preventing collision and freezing of the broadside structure are achieved, and the problems of collision and freezing are solved easily and conveniently.