发明名称 |
Direction of travel motion sensor |
摘要 |
A microwave direction of travel detector and method of detecting the direction of an intruder in a protected region. The microwave direction of travel detector transmits and receives, by a microwave transceiver a microwave signal directed toward a protected area. The microwave return signal is modulated by a moving target to produce a Doppler signal. The microcontroller monitors the output of the amplifier chain and stores the signal and compares it with previously stored signals. If the amplitude is increasing or decreasing over a preset time period, this would indicate that the target it approaching or receding respectively and an alarm would be generated by the microcontroller.
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申请公布号 |
US7777624(B2) |
申请公布日期 |
2010.08.17 |
申请号 |
US20070862078 |
申请日期 |
2007.09.26 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
WU XIAODONG;GREEN LESLIE K.;HELLAND JAMES N. |
分类号 |
G08B13/18 |
主分类号 |
G08B13/18 |
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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