Sensor for vehicle alignment system and apparatus using same

Details Sensor for vehicle alignment system and apparatus using same Sensor for vehicle alignment system and apparatus using same

1995-04-27

1996-02-06

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

Wheel alignment with photodetection

250214B, 3320315, 3320318, 33288, 3561413, 356155, 3561521, G01B 1126, G01B 524, G01C 100, H01J 4014

Patent

active

054899834

ABSTRACT:
A system for measuring angular relationships of wheels of a vehicle includes a radiation source mounted with respect to a first wheel for providing a radiation signal, an image detector having an active array of pixels mounted with respect to a second wheel for receiving an image from the radiation source and for producing an output in response to the radiation signal, and a radiation detector disposed in the path of the radiation from the radiation source for detecting the presence of the radiation signal. A controller is responsive to the presence of the radiation signal to activate the image detector to receive the image from the radiation source and determine an alignment angle of a wheel of the vehicle from the output of the image detector. A mask is mounted between the radiation source and the detector for defining an image of the radiation source upon the detector, the mask preferably having at least three slits therein. The system also uses radiation signals and the active pixel array detector to electronically determine wheel base and/or track width and corrects alignment characteristic values for errors which are affected by wheelbase. The system also uses such radiation signals and detectors to electronically determine ride height and/or wheel offset distances.

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