Boots – shoes – and leggings
Patent
1981-03-05
1984-03-13
Wise, Edward J.
Boots, shoes, and leggings
364508, 364557, 73766, G06F 1520
Patent
active
044371640
ABSTRACT:
A method and apparatus are described for using a computer to compensate for zero point and span errors as well as other non-linearities in the operation of strain gauge transducers. The apparatus comprises a semiconductor strain gauge transducer with a quasi stable voltage supply, two strain gauges and two precision resistors which form a voltage divider network; a scanner for scanning the strain gauges and precision resistors; an analog-to-digital converter for digitizing the output of the scanner; and a microprocessor for calculating a corrected output representing the phenomenon that is monitored by the strain gauge transducer. The microcomputer contains a memory in which are stored a set of bridge completion constants, a table of correction constants and a set of temperature compensation and signal conditioning algorithms. The bridge completion constants are a set of values representative of the bridge supply voltage and the resistances of a set of bridge completion resistors which are selected during factory calibration to provide two point temperature and two point span compensation for the pair of strain gauges used in the transducer. One group of correction constants provides for zero point compensation over the operating temperature range of the transducer, a second group provides for span compensation and a third group compensates for other input to output non-linearity.
REFERENCES:
patent: 4114442 (1978-09-01), Pratt
patent: 4172387 (1979-10-01), Rzekiel et al.
patent: 4172388 (1979-10-01), Gabrielson
patent: 4172389 (1979-10-01), Branch
patent: 4174639 (1979-11-01), Raven
patent: 4192005 (1980-03-01), Kurtz
patent: 4198676 (1980-04-01), Varnum et al.
patent: 4205556 (1980-06-01), Runyan
patent: 4263655 (1981-04-01), Chappell, Jr.
patent: 4303984 (1981-12-01), Houvig
patent: 4321832 (1982-03-01), Runyan
patent: 4336595 (1982-06-01), Adams et al.
Bristol Babcock Inc.
Wise Edward J.
LandOfFree
Ridge circuit compensation for environmental effects does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ridge circuit compensation for environmental effects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ridge circuit compensation for environmental effects will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-495785