Title:
超音波センサ
Document Type and Number:
Japanese Patent JP4702255
Kind Code:
B2
Abstract:
An ultrasonic sensor for detecting a position and/or a shape of an object located around an automotive vehicle is mounted on a structure of the vehicle such as a bumper. The ultrasonic sensor includes a receiving member for receiving ultrasonic waves reflected on the object to be detected and receiving element having plural vibrating portions. The receiving member is sectioned by intercepting slits into plural receiving regions each corresponding to each vibrating portion. The intercepting slit eliminates or suppresses crosstalk between neighboring receiving regions, and thereby reducing detection noises due to the crosstalk and improving detection sensitivity of the ultrasonic sensor. The shape of the intercepting slit is made to satisfy the formula: 0.35<=L/T<=0.60, where L is a depth of the slit and T is a thickness of the receiving member. In this manner, the crosstalk resulting in detection noises is sufficiently suppressed.
Inventors:
Kazuaki Watanabe
Makiko Sugiura
Yasuyuki Okuda
Makiko Sugiura
Yasuyuki Okuda
Application Number:
JP2006280021A
Publication Date:
June 15, 2011
Filing Date:
October 13, 2006
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H04R1/40; B60R21/00; G01S7/521; G01S15/93; H04R17/00; H04R19/00
Domestic Patent References:
| JP2002058097A | ||||
| JP2000228796A | ||||
| JP2005086458A |
Attorney, Agent or Firm:
Akito Tashita