| 摘要 |
The present invention relates to a system for measuring the wheel settings of a vehicle and comprises a holder (6) which is mounted on the outside of each separate wheel or wheel-pair of the vehicle. The holder (6) is fitted with a trunnion, (7) which is caused to coincide with the rotational axis (1) of a respective wheel, a beam source, for instance a laser projector (4), mounted on the trunnion (7). The beam source is intended to illuminate alternately at least two measuring scales (18) at respective ends of the vehicle which extend transversely to a plane which includes the longitudinal axis of the vehicle. Each measuring scale is comprised of an optoelectronic detector unit which includes a plurality of photoelements (25) and at least one microprocessor (26) which functions to detect and compare the intensity of the light emitted by respective photoelements (25) when these elements are illuminated, and provides information relating to the precise position of the incident light beam on the measuring scale. The inventive measuring system also enables the wheel settings of a vehicle to be checked while the vehicle is in motion, in which case the measuring scales (18) are mounted on the vehicle and a separate computer connected conductively to the scales is placed within the vehicle. |
