Boots – shoes – and leggings
Patent
1992-07-19
1994-11-29
Cosimano, Edward R.
Boots, shoes, and leggings
364554, 36457101, 364573, G06F 1520
Patent
active
053696034
ABSTRACT:
A method and apparatus for determining the calibration characteristic of a sensor which produces an output signal which has a non-linear relationship to the value of a measured parameter. In one embodiment of the invention, the non-linear input/output characteristic of the sensor is represented by an equation of a curve. In another embodiment of the invention, the non-linear input/output characteristic is approximated by a series of straight lines which correspond to a series of ranges in the output signal. During periods of measurement, the output signal of the sensor is repeatedly sampled and used to calculate running totals of data sums which are subsequently used in combination with the characteristic parameters for the curve or series of straight lines for calculating the time integral of the measured parameter. The actual value of the quantity represented by the time integral is also measured by separate means. After obtaining several corresponding calculated and actual values of the time integrals, the parameters of the curve or the series of straight lines are adjusted so that subsequent calculated values more closely approximate actual values. This method is particularly useful for determining calibration characteristics of a grain mass flow rate sensor which is used on a harvester. The calculated time integrals represent the masses of quantities of grain which are accumulated over different harvesting periods. Actual masses of these quantities of grain are separately measured by weighing them after they are unloaded from the harvester.
REFERENCES:
patent: 4581714 (1986-04-01), Reid
patent: 5132897 (1992-07-01), Allenberg
patent: 5247467 (1993-09-01), Nguyen et al.
Cosimano Edward R.
Herink Kent A.
Laurenzo Brian J.
Trout Brett J.
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