車輛防撞系統及方法

車輛中心創新前瞻技術研究計畫

姚啟駿、陳俊傑、黃世杰、李明鴻

一種車輛防撞系統，包含：一車速感測單元、一測距感測單元、一電子駐煞車單元，及一控制單元。該車速感測單元用以感測該車輛之速度。該測距感測單元用以感測該車輛周遭的障礙物與車輛之相關距離。該控制單元根據車輛之速度、障礙物與車輛之相關距離來運算該車輛與周遭障礙物的一碰撞時間，並於該碰撞時間不大於一煞車時間時，控制該電子駐煞車單元提供車輛煞車輔助。藉由設置該電子駐煞車單元並搭配該車速感測單元、該測距感測單元，可以在低速的倒車或停車狀況下，執行煞車輔助以避免車輛碰撞情形，並可減少系統設置成本。

A collision avoidance system is configured to be installed in a vehicle, and includes a speed sensing unit to sense a speed of the vehicle, a distance sensing unit to sense a distance between the vehicle and a nearby object, an EPB unit to decelerate the vehicle, and a control unit to compute a length of collision time after which the vehicle is predicted to collide with the object according to the speed of the vehicle and the distance between the vehicle and the object, and to control the EPB unit to decelerate the vehicle when the collision time is not longer than a brake time length.