| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a detection device having a plurality of detection areas. <P>SOLUTION: The detection device includes a receiving unit 4 for receiving electromagnet waves transmitted by a transmission unit 1, first and second detectors 15 and 16 for detecting receiving signals according to the electromagnet waves received by the receiving unit, first and second AGC (Automatic gain Control) circuits 21 and 22 for controlling response speeds of the first and second detectors based on a given control signal, a first comparator 28 for comparing a detection signal detected by the first detector with a first reference signal, a second comparator 29 for comparing a detection signal detected by the second detector with a second reference signal, and a control unit 24 for detecting detection objects in the plurality of different detection areas A1 and A2 by supplying the control signal and the first and second reference signals. <P>COPYRIGHT: (C)2012,JPO&INPIT |
