ANGLE SENSOR WITH CCD

摘要

An automotive vehicle wheel alignment system uses a light source (68) and a linear CCD (72) to measure angles. A mask (76) having a slit (78) 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.