Highly accurate weighing system
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United States of America Patent
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-
Oct 30, 1990
Grant Date -
N/A
app pub date -
Mar 14, 1988
filing date -
Mar 14, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A microprocessor-based system (18) for weighing large objects, such as aircraft, at a number of points is disclosed. A plurality of load sensing units (10) each contain a strain gauges (50), analog amplification and calibration circuits (54), filtering circuits (56, 58), and analog-to-digital conversion circuitry (60). Each of the load sensing units (10) couple through serial data communication channels (14) to a controller (12), which contains a microprocessor (20), a keyboard (46), and a display (36). A microprocessor (20) executes a program which monitors all load sensing units (10), calculates weight based on data obtained from the load sensing units (10) and several compensation factors, and displays weight of a selected load sensing unit (10). Various foreground (200) and keyboard service (300) software routines are discussed.
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