Process for automatic calibration or re-calibration of measureme

Details Process for automatic calibration or re-calibration of measureme Process for automatic calibration or re-calibration of measureme

1991-03-01

1994-01-04

Harvey, Jack B.

Boots, shoes, and leggings

73 1R, 356375, 25022711, 385 88, H01J 516, G06F 1520

Patent

active

052766314

ABSTRACT:
A calibration process utilizes two nearly identical sensors. The characteristic output curve of the first sensor is obtained using the measuring outputs of the second sensor. In particular, the first sensor has a characteristic output curve f[x] where x is a physical variable to be measured. The second sensor has an output curve y[x].apprxeq.f[x+a]. Starting from an initially known portion of the curve f[x], outputs of the second sensor are utilized to extend the known portion of the characteristic output curve f[x] of the first sensor into ranges of the variable x where this function is not yet known.

REFERENCES:
patent: 4446715 (1984-05-01), Bailey
patent: 4488813 (1984-12-01), Kissinger et al.
patent: 4861131 (1989-08-01), Bois et al.
patent: 5051578 (1991-09-01), Slemon et al.
patent: 5162661 (1992-11-01), Sato et al.
Emanuel Bois et al "Loss Compensated Fiber Optic Displacement Sensor Including a Lens", Applied Optics, 1 Feb. 1989 vol. 28, No. 3, pp. 419-420.
F. E. Wagner "Process Measurement by Self-Calibrating Measuring Systems", Acta Imeko, 1982, pp. 467-477.

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