Boots – shoes – and leggings
Patent
1991-11-22
1995-03-14
Teska, Kevin J.
Boots, shoes, and leggings
364481, 364863, 324610, 324725, 340660, 318650, G01L 118
Patent
active
053981944
ABSTRACT:
An electronic sensing circuit, which can be used in place of a linear variable differential transformer (LVDT) has four piezoresistor elements in a Wheatstone bridge configuration. A source voltage is applied across a first pair of bridge points, and the resulting junction voltages appearing at a second pair of bridge points are applied to a pair of inverting amplifiers in balanced configuration which provide first and second output voltages which change relative to each other depending upon the direction and amount of pressure applied to the piezoresistor elements in a manner similar to the output voltages provided by an LVDT.
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Tobey et al., Operational Amplifiers, The Maple Press Company, 1971, Chapter 6, pp. 201-212.
Omega Engineering, Inc., "Pressure and Strain Measurement Handbook and Encyclopedia," 1985, pp. A-7-A-10; E-7; E-39-E-40; E-43-E-46; E-59; E-62.
Brosh Amnon
Weinstein Donald
Garbowski Leigh Marie
Kulite Semiconductor Products Inc.
Plevy Arthur L.
Teska Kevin J.
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