Method of steering capacitor fields for use in capacitive...

Details Method of steering capacitor fields for use in capacitive... Method of steering capacitor fields for use in capacitive...

2007-01-23

2007-01-23

Nguyen, Tai (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S540000, C340S541000, C340S545600, C340S686600, C324S076520, C324S076530, C324S652000, C324S683000

Reexamination Certificate

active

10538533

ABSTRACT:
The present invention provides a capacitive sensing apparatus having utility in object detection security applications whereby the object detection field generated by the apparatus is made steerable. The apparatus includes a power source having a ground connection in communication with at least one sensing circuit operative to detect an object moving within the sensing field. At least one conductive element is provided in communication with electrical ground. To steer the direction of the sensing field, the relative position and distance between the conductive element and the sensing circuit is adjusted such that a desired sensing field pattern is obtained.

REFERENCES:
patent: 5442347 (1995-08-01), Vranish
patent: 5952835 (1999-09-01), Coveley
patent: 6731209 (2004-05-01), Wadlow et al.

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