Tactile shear sensor using anisotropically conductive material

Details Tactile shear sensor using anisotropically conductive material Tactile shear sensor using anisotropically conductive material

1992-10-30

1994-05-24

Williams, Hezron E.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified electrical sensor or system

73767, G01L 100

Patent

active

053138406

ABSTRACT:
In accordance with the present invention, a tactile sensor capable of detecting shear force comprises an anisotropically conductive material disposed between a conductive cursor and an array of contacts. In one preferred embodiment, the anisotropic material is affixed to the contact array, and the cursor is affixed to an elastomeric skin overlying the material. Movement of the cursor is detected by interconnection of the contacts underlying the cursor. In a second embodiment, the anisotropic material is affixed to the cursor but is free to move over the contact array in response to shear force. Movement of the cursor is detected by interconnection of the underlying contacts. Such arrangements can also detect pressure and temperature.

REFERENCES:
patent: 4014217 (1977-03-01), Lagasse et al.
patent: 4492949 (1985-01-01), Peterson et al.
patent: 4588348 (1986-05-01), Beni et al.
patent: 4668861 (1987-05-01), White
T. J. Nelson, Et al. "Shear-Sensitive Magnetoresistive Robotic Tactile Sensor", IEEE Transactions on Magnetics, vol. MAG-22, No. 5 (1986).
S. Jin, et al. "Optically Transparent, Electrically Conductive Composite Medium" Science, vol. 255, pp. 446-448 (1992).
S. Jin, et al. "New, Z-direction anisotropically conductive composites", Journal of Applied Physics, vol. 64, No. 10, Part II (1988).
L. D. Harmon "Automated Tactile Sensing" The International Journal of Robotic Research, vol. 1, No. 2, pp. 3-32 (1982).

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