A multidirectional capacitive proximity sensor array

Jiang Long; Bingnan Wang

doi:10.1117/12.2053314

4 June 2014 A multidirectional capacitive proximity sensor array

Jiang Long, Bingnan Wang

Proceedings Volume 9116, Next-Generation Robots and Systems; 911609 (2014) https://doi.org/10.1117/12.2053314
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

Abstract

This paper presents a multi-directional capacitive proximity sensor array based on band-stop filter. The band- stop filter is composed of four decoupled LC resonant circuits, so each stop band is determined by one capacitive sensor and its corresponding lumped inductor, respectively. Therefore, the change in capacitance can be obtained by measuring the change of the notches of the band-stop response. The filter is fabricated into a cubic shape for sensing different directions. Experiment results show that the fabricated sensor can detect objects coming from all four directions simultaneously by measuring the transmission at frequencies near four notches.

Citation Download Citation

Jiang Long and Bingnan Wang "A multidirectional capacitive proximity sensor array", Proc. SPIE 9116, Next-Generation Robots and Systems, 911609 (4 June 2014); https://doi.org/10.1117/12.2053314

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