| 摘要 |
PROBLEM TO BE SOLVED: To provide a apparatus for detecting parking space for improving detection accuracy in a parking space by accurately measuring distance to a close or distant obstacle from an own vehicle. SOLUTION: Distance to an obstacle is measured by an ultrasonic sensor 12, while moving a vehicle before parking the vehicle, a transmission period control section 21 at an ultrasonic sensor control section 2 controls the transmission time interval of ultrasonic pulses according to measurement distance, and a transmission period is reduced as distance to the obstacle is shorter. Additionally, a transmission intensity control section 22 of the ultrasonic sensor control section 2 controls the transmission output of ultrasonic pulses according to measurement distance; and transmission output is made weaker, the shorter the distance to the obstacle is. Additionally, a vehicle speed control section 3 controls a speed V in the own vehicle and performs control so that sampling distance does not become too large and so that the distance becomes constant. With this configuration, the position calculation accuracy of the obstacle is improved, and evaluation accuracy in the parking space is improved. COPYRIGHT: (C)2004,JPO
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