Weighing scales – With testing
Patent
1989-06-12
1990-03-20
Miller, Jr., George H.
Weighing scales
With testing
177 2514, 177164, 73 1B, 36457101, G01G 1952, G01G 2314, G01L 122, G01L 2500
Patent
active
049093380
ABSTRACT:
A scale utilizes a plurality of load cells positioned beneath a weighing platform for determining the weight of objects placed upon the platform. During a weighing operation, each load cell generates a voltage proportional to the response of said cell to the application of a weight to the platform. Each such generated voltage is transmitted serially through a multiplexer and is converted to a digital value by an analog-to-analog converter. These digital values are employed by a microprocessor to determine the weight of the object placed on the weighing platform. The scale is calibrated by weighing a test weight in a plurality of different locations on the weighing platform, and utilizing the individual digital values thus obtained for each load cell in a plurality of simultaneous equations, which are then solved in the microprocessor to provide constant values associated with each load cell, which are used in subsequent weighing operations.
REFERENCES:
patent: 4070900 (1978-01-01), Engels
patent: 4102420 (1978-07-01), Uyama et al.
patent: 4254469 (1981-03-01), Whitely
patent: 4330836 (1982-05-01), Donofrio et al.
patent: 4412591 (1983-11-01), Reichmuth et al.
patent: 4466499 (1984-08-01), Minamida et al.
patent: 4466500 (1984-08-01), Mosher et al.
patent: 4482022 (1984-11-01), Komoto
patent: 4509608 (1985-04-01), Hikita
patent: 4642788 (1987-02-01), Haze
patent: 4660663 (1987-04-01), Amacher et al.
patent: 4667757 (1987-05-01), Johnson
patent: 4715457 (1987-12-01), Amacher et al.
patent: 4733363 (1988-03-01), Yamada et al.
patent: 4751661 (1988-06-01), Amacher et al.
patent: 4760539 (1988-07-01), Amacher et al.
patent: 4815547 (1989-03-01), Dillon et al.
patent: 4848477 (1989-07-01), Oldendorf et al.
patent: 4850442 (1989-07-01), Naito et al.
Amacher Gene L.
Mergenthaler Barry M.
Vitunic Mark R.
Hawk Jr. Wilbert
Miller Jr. George H.
NCR Corporation
Sessler Jr. Albert L.
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