AUTOMATIC SWITCH WITH HUMAN BODY DETECTION SENSOR

Japanese Patent JP3720317

B2

PROBLEM TO BE SOLVED: To provide a two-wire automatic switch with a human body detection sensor capable of ON-OFF control of luminaire at low cost with a very simple circuit constitution without selecting an illumination load to a specific apparatus.
SOLUTION: This automatic switch with the human body detection sensor of a two-wire wiring accessory connected in series to a load 12 relative to an alternating current source AC, for supplying a power to the load 12, detecting a hot radiation from a human body, and performing ON-OFF control of power supply to the load 12 is equipped with a sensor circuit 15 for detecting the hot radiation from the human body, power supply switch circuits (TRAC, DB, Q22, Q23) for performing the ON-OFF control of power supply from the alternating current source AC to the load 12 based on a detection output from the sensor circuit 15, and voltage generation means (ZD, C2) for generating a direct-current voltage for a regulator. The switch is also equipped with current supply means (Q21, R2, R3) for supplying a micro constant charging current to the voltage generation means when the load 12 is in the OFF state, and the regulator 14 for inputting a voltage from the voltage generation means (ZD, C2), generating the stabilized direct-current voltage having a small loss, and supplying it to the sensor circuit 15.

Sadao Nakano
Kanji Satake

JP2002287557A

November 24, 2005

September 30, 2002

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Sadao Nakano

G01J1/42; H01H35/00; H03K17/945; H05B37/02; G01V8/12; (IPC1-7): G01V8/12; G01J1/42; H01H35/00; H03K17/945; H05B37/02

JP2000357443A
JP2000131456A
JP62178623U

Susumu Ito

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