Driven shielding capacitive proximity sensor

Details Driven shielding capacitive proximity sensor Driven shielding capacitive proximity sensor

1991-06-06

1992-11-24

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With particular transmitter

324687, 340562, G08C 1910, G08B 1326

Patent

active

051666790

ABSTRACT:
A capacitive proximity sensing element, backed by a reflector driven at the same voltage as and in phase with the sensor, is used to reflect the field lines away from a grounded robot arm towards an intruding object, thus dramatically increasing the sensor's range and sensitivity.

REFERENCES:
patent: 3896425 (1975-07-01), Erichsen
patent: 4661797 (1987-04-01), Schmall
patent: 4914421 (1990-04-01), d'Alayer de Costemore d'Arc et al.
"Tactile Sensors for Robotics and Medicine", John G. Webster, John Wiley & Sons, Inc., 1988, pp. 198-207.
"An In-Situ Evaluation of a Capactive Sensor-Based Safety System for Automated Manufacturing Environments", Robots 13, Conference Proceedings, SME/RI, May 7-11, 1989, pp. 7-13 thru 7-25.

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