Angle sensor with CCD

Details Angle sensor with CCD Angle sensor with CCD

1990-06-04

1991-05-28

Evans, F. L.

Optics: measuring and testing

Angle measuring or angular axial alignment

With screen

33288, 356152, G01B 11275

Patent

active

050188534

ABSTRACT:
An automotive vehicle wheel alignment system uses a light source and a linear CCD to measure angles. A mask having a slit through which light from the light source is projected onto the surface of the linear CCD is interposed between the light source and the linear CCD. A microprocessor controls the light source and the linear CCD and uses an output from the linear CCD to calculate an angle between the light source and the linear CCD. The microprocessor uses a search algorithm to locate the center of the image projected on the linear CCD. Calibration data for the linear CCD is stored in an EEPROM.

REFERENCES:
patent: 3865492 (1975-02-01), Butler
patent: 3901604 (1975-08-01), Butler
patent: 4319838 (1982-03-01), Grossman et al.
patent: 4594789 (1986-06-01), Marino et al.
patent: 4854702 (1989-08-01), Stieff
patent: 4898464 (1990-02-01), Thorne et al.

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