Distance-dependent signal producing device for use in motor vehicle, has evaluation unit computing distance from signals of sensor and comprising memory for characteristic number corresponding to distance for only single impulse

摘要

The device has a marking (4) staying in connection with a wheel (1) of a motor vehicle. An impulse sensor (5) is provided for scanning the marking, and an evaluation unit (6) evaluates signals of the impulse sensor and computes the distance from the signals of the impulse sensor. A display unit (7) displays the computed distance. The evaluation unit comprises a memory (11) for an characteristic number corresponding to the distance for only single impulse, where the characteristic number is manually changeable.