NASA NTRS · 19930000620
Phase-Discriminating Capacitive Sensor System
Abstract
Crosstalk eliminated by maintaining voltages on all electrodes at same amplitude, phase, and frequency. Each output feedback-derived control voltage, change of which indicates proximity-induced change in capacitance of associated sensing electrode. Sensors placed close together, enabling imaging of sort. Images and/or output voltages used to guide robots in proximity to various objects.
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Vranish, John M., Rahim, Wadi. 1993-10-01. Phase-Discriminating Capacitive Sensor System. https://ntrs.nasa.gov/citations/19930000620
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