| 摘要 |
PROBLEM TO BE SOLVED: To provide an obstacle detector which gives an alarm in the case of the existence of an obstacle with which it is truly necessary to avoid collision. SOLUTION: A shift position sensor 1 which discriminates whether a vehicle will go forward or backward, a steering angle sensor 2 which discriminates the going direction of the vehicle, a vehicle speed sensor 3 which discriminates the running speed of the vehicle, a course discrimination means 4 which predicts the course of the vehicle in accordance with signals from the shift position sensor 1, the steering angle sensor 2, and the vehicle speed sensor 3, an obstacle position detection means 5 which can detect the positions of obstacles existing around the vehicle, and a collision discrimination means 6 which discriminates a dangerous area of a high possibility of collision in the case of the existence of obstacles and a safe area of a low possibility of collision in spite of the existence of obstacles in accordance with signals from the course discrimination means 4 and the obstacle position detection means 5 and outputs a collision detection signal in the case that obstacles exist in the dangerous area are provided.
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