Weigh scale using multiple digital load cells

Details Weigh scale using multiple digital load cells Weigh scale using multiple digital load cells

1990-03-27

1991-04-02

Miller, Jr., George H.

Weighing scales

Computer

Electrical

177211, 73 1B, 7386267, G01G 314, G01L 2500, G01L 122

Patent

active

050040588

ABSTRACT:
A multiple load-cell weigh scale (10) is disclosed which provides for substantially enhanced accuracy and significantly greater convenience in compensating for load position. The preferred scale (10) includes a platform (12) supported by plurality of digital load cells (14), a central controller (16) for producting a plurality of digital excitation signals representative of a selected excitation voltage for the respective load cells, and an excitation control unit (22) for each load cell for receiving respective excitation signals and for controlling excitation voltage of an associated load cell (20) in accordance therewith.

REFERENCES:
patent: 4261195 (1981-04-01), Lockery
patent: 4294322 (1981-10-01), Nishiyama
patent: 4380175 (1983-04-01), Griffen
patent: 4492280 (1985-01-01), Susor
patent: 4556115 (1985-12-01), Lockery et al.
patent: 4696359 (1987-09-01), Glibbery
patent: 4799558 (1989-01-01), Griffen
patent: 4804052 (1989-02-01), Griffen
P-Controlled Measurement Sharpen Industrial Processes; Electronic Design, Dec. 10, 1981.
Linear Applications Handbook; National Semiconductor Corporation 1984 Linear Supplement Databook; National Semiconductor Corporation
Digitally Compensated Pressure Sensors for Flight Measurement; Douglas B. Juanarena and Chris Gross; Pressure Systems Inc.

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