| 摘要 |
A system for vehicle condition evaluation comprises (a) a control unit (1) for regulating operation of one or more of the following facilities and for receiving data from said one or more facilities (2a to 2n) for processing to provide output information indicative of one or more parameters of vehicle condition: (i) tyre tread depth appraisal, (ii) lamp functioning, (iii) tyre side wall condition appraisal, (iv) windscreen condition appraisal, and (v) tyre pressure appraisal, and (b) output means (4) for said information indicative of one or more parameters of vehicle condition. The system suitably also comprises an operator interface (3). The tyre tread depth appraisal facility suitably comprises sources for directing structured linear light at a non-perpendicular angle at the tyre tread surface from different angles, and a camera for monitoring the pattern of illumination of the tyre surface to provide a measure of tread depth by analysis of the pattern of illumination. |
