Circuit configuration for processing the output signals of a speed sensor to eliminate noise

摘要

PCT No. PCT/EP90/01761 Sec. 371 Date May 6, 1992 Sec. 102(e) Date May 6, 1992 PCT Filed Oct. 18, 1990 PCT Pub. No. WO91/06457 PCT Pub. Date May 16, 1991.A circuit configuration for editing, or processing the output signal of a speed sensor (5) includes a trigger circuit (1, 22), the changeover points or "hysteresis" of which are controllable, with the circuit configuration being furnished with circuits for determining the coupling factor (k), and with circuits for adjusting the hysteresis in response to the coupling factor. The coupling factor (k)-multiplied by the frequency of the sensor signal corresponding to the speed-forms the amplitude of the sensor output signal. With the coupling factor (k) being high, the hysteresis will be high, while it will be low with a low coupling factor.