发明名称 |
Intrusion detection system including over-under passive infrared optics and a microwave transceiver |
摘要 |
An intrusion detection system includes a microwave transceiver detecting motion in a protected space. The microwave transceiver generates a first signal. A first infrared sensor detects a source of infrared energy in a plurality of upper detection zones within the protected space. The first infrared sensor generates an upper sensor signal. A second infrared sensor detects a source of infrared energy in a plurality of lower detection zones positioned below the upper detection zones within the protected space and intersecting a floor surface within the protected space. The second infrared sensor generates a lower sensor signal. A processor receives the first signal, the upper sensor signal and the lower sensor signal. The processor generates an alarm signal in response to the first signal exceeding a threshold value. The threshold value is varied in response a relationship between the lower sensor signal and the upper sensor signal.
|
申请公布号 |
US7034675(B2) |
申请公布日期 |
2006.04.25 |
申请号 |
US20040825909 |
申请日期 |
2004.04.16 |
申请人 |
ROBERT BOSCH GMBH |
发明人 |
DIPOALA WILLIAM S;BERNARD MICHAEL J |
分类号 |
G08B19/00;G08B13/24;G08B29/18 |
主分类号 |
G08B19/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|