| 摘要 |
PURPOSE:To evade the trouble of trying garage parking and column parking by providing a sideward distance sensor means which detects the distance from an automobile to a sideward body with an ultrasonic wave, etc., and a moving distance sensor means which detects the moving distance of the automobile. CONSTITUTION:An ultrasonic sensor 2 is controlled by a microcomputer 4 to detect the distance to the body on the left side of the automobile A. Further, a rotary sensor 3 is also controlled by the microcomputer 4 to measure the moving distance X of the automobile A from the rotation speed of the front wheels. Then it is decided by data processing whether or not the automobile can be parked in a garage. Namely, the difference is found by subtracting the maximum value Xmin of X from the maximum value Xmax of X for every continuous data sequence which meets d>=V (d: the distance from the automobile A to the body on the left side, V: automobile length) and when L>=W+0.7 holds, it is decided that the automobile can be parked in a garage (W: the width of the automobile, L: the maximum value of Xmax-Xmin). |
