| 摘要 |
PROBLEM TO BE SOLVED: To provide an obstacle detection device which can also detect an obstruction of a short distance, without causing design nature to be reduced. SOLUTION: The obstacle detection device 100 comprises a transceiver element 112, an ultrasonic sensor 110, including a housing 111 in which the transceiver element 112 is brought into contact with the inner surface of a base section 113 and is fixed and an external surface of the base section 113, is exposed to the outside via a through hole 11 formed in a bumper 10; a vibration detector 120 arranged at the inside 13 side of the bumper 10 for detecting the vibration of the bumper 10; a vibration suppression section 130, prepared between the internal surface of the through hole 11 and the housing 111, which counters to constrain the vibration transmission between both; and a selecting means 140 made into a reflected wave detected signal for detecting the reflected wave, according detected signal of the vibration detector 120 to the obstruction in a period, to which a base section 113 vibrates in response to the transmitting vibration of a transceiver element 112 at least is set to the predetermined period of the detected signal of the transceiver element 112 and the vibration detector 120. COPYRIGHT: (C)2007,JPO&INPIT
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