Measuring and testing – Dynamometers – Responsive to multiple loads or load components
Patent
1984-12-21
1985-12-03
Ruehl, Charles A.
Measuring and testing
Dynamometers
Responsive to multiple loads or load components
338 47, 338 99, 901 33, G01L 516, H01C 1010
Patent
active
045559546
ABSTRACT:
A tactile sensor (100) comprises a printed circuit board (102) having a plurality of spaced apart, electrically conductive foils (104) thereon, each coupled to a decoder (106) which selectively applies a voltage individually thereto. The foils are separated from each other by each of a plurality of upraised insulative portions (116) each comprised of a layer of photoresist material. An anisotropically electrically conductive rubber pad (107) having alternating electrically conductive and nonconductive strips (108, 110) overlies the substrate so that the conductive strips are supported in spaced relationship from the conductive foils by the upraised photoresist layers. Each conductive strip is coupled to a multiplexer (115). Upon the application of a force against the rubber sheet, the conductive strips are deformed into electrical contact with the conductive foils on the substrate. The location and magnitude of the applied force can be determined from the voltage produced at the output of the multiplexer as the decoder selectively impresses a voltage on each conductive foil.
REFERENCES:
patent: 3308253 (1967-03-01), Krakinowski
patent: 3600528 (1971-08-01), Leposavic
patent: 3617666 (1971-11-01), Braue
patent: 4471369 (1984-09-01), Anthony et al.
patent: 4492949 (1985-01-01), Peterson et al.
patent: 4493219 (1985-01-01), Sharp et al.
patent: 4503416 (1985-03-01), Kim
IBM Technical Disclosure Bulletin, vol. 19, No. 2, Jul. 1976, pp. 699-702, "High Density Tactile Sensor with One Resistance Wire".
"A High-Resolution Imaging Touch Sensor" by W. Daniel Hillis, The International Journal of Robotics, vol. 2, Summer 1982 at pp. 33-34.
"Active Touch Sensing" by William Daniel Hillis, M.I.T. Artifical Intelligence Laboratory, A. I. Memo 629, Apr. 1981.
"A Robot with Optical Position Feedback", K. Asakawa et al. published by Fujitsu Laboratories (date unknown).
AT&T - Technologies, Inc.
Levy R. B.
Ruehl Charles A.
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