| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wireless sensor device which detects simultaneously existence of a moving body and an azimuth of the moving body when the moving body exists. <P>SOLUTION: The wireless sensor device includes; first, second and third transmitting/receiving antennas 1L, 1C, 1R; first, second and third detection diodes 3L, 3C, 3R; a pulse generator 2 for supplying a pulse signal to the transmitting/receiving antennas 1L, 1C, 1R and the detection diodes 3L, 3C, 3R, respectively; a first differential amplifying circuit 4 into which an output signal of the first detection diode 3L and an output signal of the third detection diode 3C are input; a second differential amplifying circuit 5 into which an output signal of the second detection diode 3R and the output signal of the third detection diode 3C are input; an adder 11 for detecting a sum signal of an output signal of the first differential amplifying circuit 4 and an output signal of the second differential amplifying circuit 5; and a subtraction circuit 12 for detecting a differential signal between the output signal of the first differential amplifying circuit 4 and the output signal of the second differential amplifying circuit 5. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
