Telemetry method for motor vehicle, involves producing signals representing transmitting and reflection waves, where signals are processed to obtain another set of signals that are compared with threshold to produce measuring signal

摘要

The method involves producing a transmitting wave that meets an object and is reflected on the object. A signal (SRrf) representing the transmitting wave is produced. A reflection wave produced by the reflection of the transmitting wave is received. A signal (SRr) representing the reflection wave is produced. The signals (SRrf, SRr) are processed to obtain signals (SArf, SAr) having the same amplitude. The processed signals are compared with a predetermined threshold (TH) to produce a measuring signal representing the distance between a telemetry device and the object. An independent claim is also included for a motor vehicle comprising a lighting device and/or a headlight equipped with a telemetry device.