Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1996-05-24
1998-06-02
Swarthout, Brent A.
Communications: electrical
Condition responsive indicating system
Specific condition
340562, 340565, 340941, G08B 1326
Patent
active
057606889
ABSTRACT:
An improved body sensing device capable of precisely sensing a living body at a standstill by discriminating the living body from other substances than the living body. An oscillator provided with a detection coil oscillates a high frequency signal. As there is no object or exists baggage or the like near the detection coil, the oscillator oscillates and generates a high frequency signal at a high level to be detected by a detector for turning on a transistor of a controller. As there exists a human body near the oscillator, the oscillation stops and the input signal from the detector to the transistor is extremely lowered, so that the transistor is turned off.
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Omron Corporation
Swarthout Brent A.
Trieu Van T.
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