Boots – shoes – and leggings
Patent
1993-12-30
1997-02-18
Ramirez, Ellis B.
Boots, shoes, and leggings
36457107, G01F 160
Patent
active
056046847
ABSTRACT:
A method for quick and low cost calibration of a sensor to remove span and offset errors. Span and offset errors are removed using a circuit which produces a corrected output signal as a function of calculated gain and offset values. The gain and offset values are calculated by first measuring an uncorrected sensor output at no input and at full scale output. These values are then used in an equation to calculate offset and gain values. The circuit includes an amplifier, a switch, a gain circuit, an offset circuit and a memory. The memory, which may be serial written memory including static RAM and a shift register, stores gain and offset coefficients for use by the gain and offset circuits and the amplifier. The gain and offset circuits may include digital to analog converters for converting the stored gain and offset digital values into analog equivalents.
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Choi Kyle J.
Leonard Robert B.
Ramirez Ellis B.
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