Optical sensor system for motor vehicle for detecting road condition, has controller, whose control is effected such that signal component of transmitted signal controls error in receiver output signal

摘要

The optical sensor system has a controller (CT1) with a receiver output signal (S1-1) for generating a compensation transmission signal, where the compensation transmission signal is supplied to a compensation transmitter (K1) for controlling. The signal of the compensation transmitter is received by a receiver (D1) after passing through a third transmission path. The control by controller is effected such that the signal component of transmitted signal (S5) controls error in the receiver output signal, and the system noise is zero.