发明名称 |
Back-up proximity sensor for a vehicle |
摘要 |
<p>A backup proximity sensor for a vehicle includes a first passive infrared sensor (PIR) and a second PIR vertically mounted with respect to one another on a pivotal support member. The first PIR and second PIR are angularly directed such that the respective fields of view converge, establishing a detection zone in a region behind a vehicle. A drive motor and scanning gear box are coupled to the pivotal support member and pivotally drive the first and second PIR in an oscillatory fashion about a predetermined arc. This establishes relative motion between the PIRs and a stationary warm body in the field of view of the two sensors, allowing the stationary body to be detected. A detection circuit receives output signals from the first PIR and second PIR and generates an output signal indicative of a warm body being detected by both the first and second PIRs. This eliminates false alarms generated by warm bodies outside the region of the desired detection zone. <IMAGE></p> |
申请公布号 |
EP0935180(A2) |
申请公布日期 |
1999.08.11 |
申请号 |
EP19990102154 |
申请日期 |
1999.02.03 |
申请人 |
EATON CORPORATION |
发明人 |
SCHMALZ, SEVEN CHRISTOPHER;SCHUCHMANN, RUSSELL PAUL;ZUERCHER, JOSEPH CHARLES |
分类号 |
A01D69/00;A01D75/20;B60R21/00;G01J1/02;G01V8/12;G05D1/02;(IPC1-7):G05D1/03 |
主分类号 |
A01D69/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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