Strain-sensing goniometers, systems and recognition algorithms
AssigneeThe Board of Trustees of the Leland Stanford Junior University
InventorsJames F. Kramer, William R. George, Peter Lindener
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Abstract
Goniometers are provided having internal compensation employing two opposing variable resistance strain sensing elements separated by a flexible film. The goniometers may be used in sets for detecting complex hinge or joint movements, where patterns of hinge or joint positions may be used to define symbols. Algorithms are provided for parsing values from a system of goniometers in motion having information content.
Claims15
A goniometer capable of following an angle of bending to at least about 115 degrees, said goniometer comprising:
- an inert thin electrically non-conductive flexible support backing,
- first and second variable resistance strain sensing elements affixed on opposite sides of said backing;
- and
- means for electrically connecting each of said elements.
A goniometer capable of following an angle of bending to at least about 115 degrees, said goniometer comprising:
- an inert thin electrically non-conductive flexible support backing of from 0.2 to 10 mils in thickness;
- and
- first and second variable resistance strain sensing elements affixed on opposite sides of said backing;
- and
- means for electrically connecting each of said elements.
Dependencies are inferred from the claim text.