Active Targets For Capacitive Proximity Sensors

Lightweight, low-power active targets devised for use with improved capacitive proximity sensors described in Capacitive Proximity Sensor Has Longer Range (GSC-13377), and Capacitive Proximity Sensors With Additional Driven Shields (GSC-13475). Active targets are short-distance electrostatic beacons; they generate known alternating electro-static fields used for alignment and/or to measure distances.