Weight measuring method using a plurality of sensors

Details Weight measuring method using a plurality of sensors Weight measuring method using a plurality of sensors

1997-07-11

1998-09-08

Trammell, James P.

Boots, shoes, and leggings

36457101, 177164, G01G 900

Patent

active

058054677

ABSTRACT:
A weight measuring apparatus comprising a plurality of load sensors, together with an input network, a multiplexer, a reference, an analog to digital converter, and a processor, wherein the input network includes an analog summing network and direct sensor connections to the multiplexer. The multiplexer is arranged to permit measurement of the sum signal, a reference signal, and each direct load sensor signal in a prescribed sequence. The multiplexed signals are converted to digital and processed to derive a weight estimate based on the multiplexed measurements and a system error model. The prescribed measurement sequence permits measurement of the sum signal more frequently than each of the direct signals. A method is described for deriving correction factors for the error model comprising the placing of calibration weights primarily on each weight sensor and solving the system of simultaneous equations for the resulting correction factors.

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