Title:
PROXIMITY DETECTOR
Document Type and Number:
Japanese Patent JPS5363582
Kind Code:
A
Abstract:
A proximity detector including a pair of antennae disposed at the front edge of a door with a space; and voltage converters for converting earth electrostatic capacities of the antennae to the corresponding voltages. The proximity detector further includes a first detecting circuit for detecting a differential signal of the outputs of the voltage converters; and a second detecting circuit for detecting a summing signal of the outputs of the voltage converters. The movement of the door is controlled by the output of the first detecting circuit and/or the output of the second detecting circuit.
Inventors:
NODA MASAHIRO
TOKUI KAZUO
TOKUI KAZUO
Application Number:
JP13875676A
Publication Date:
June 07, 1978
Filing Date:
November 18, 1976
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
B66B13/26; G01V3/08; H03K17/955; H03K17/96; E05F15/00; (IPC1-7): G01D21/04; H01H35/00; H01H36/00; H03K17/00