METHOD OF STEERING CAPACITOR FIELDS FOR USE IN CAPACITIVE SENSING SECURITY SYSTEMS

摘要

The present invention provides a capacitive sensing apparatus (10) having utility in object detection security applications whereby the object detection field (160) generated by the apparatus is made steerable. The apparatus includes a power source (76) having a ground connection (77) in communication with at least one sensing circuit (82) operative to detect an object (84) moving within the sensing field. At least one conductive element (75) 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.