Molinar Tommy B. (Ft. Worth TX) Johnston Jerome E. (Austin TX)
출원인 / 주소
General Electrodynamics Corporation (Arlington TX 02)
인용정보
피인용 횟수 :
10인용 특허 :
7
초록▼
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 conver
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.
대표청구항▼
A system for measuring weight of a load comprising: a plurality of load sensing units, each including: a load cell operable in only one of a plurality of load ranges, a differential amplifier coupled to said load cell, configured to have a variable gain for calibrating said load sensing unit, and co
A system for measuring weight of a load comprising: a plurality of load sensing units, each including: a load cell operable in only one of a plurality of load ranges, a differential amplifier coupled to said load cell, configured to have a variable gain for calibrating said load sensing unit, and configured so that a full scale common mode input signal to said amplifier is attenuated by said amplifier to an amplitude less than said quantizing uncertainty parameter, a filter coupled to said amplifier and configured to attenuate full scale signals at 50 Hz and greater to an amplitude which is less than said quantizing uncertainty parameter, and an analog-to-digital converter coupled to said filter and having said quantizing uncertainty parameter associated therewith, said converter being for supplying a digital load data value; and a controller remotely located from each of said load sensing units, said controller including: computing means coupled to each of said converters in said plurality of load sensing units, means for receiving information identifying said one of a plurality of load ranges for each said load sensing units and identifying a latitude at which the load is being measured, and for supplying a load range data value for each of said load sensing units and a latitude data value to said computing means, and means for displaying weights calculated by said computing means, and memory means for storing a program executable by said computing means, said memory means being configured so that when said computing means executes said program, said computing means calculates and displays weight experienced by one of said plurality of load sensing units using one of said digital load data values, one of said load range data values, and said latitude data value.
Langlais Jacques F. (Coudray-Montceaux FRX) Brisset Gilbert C. (Paris FRX), Electrical measurement circuit including a low-pass filter, in particular for weighing.
Baumgartner Max (Stafa CH) Bucher Anton (Stafa CH) Utzinger Diethelm (Zurich CH), Weighing apparatus of the electromagnetic load compensation type including filter means.
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