CIRCUIT ARRANGEMENT FOR CONDITIONING AND EVALUATING WHEEL SPEED SENSOR SIGNALS

摘要

PCT No. PCT/EP94/01254 Sec. 371 Date Nov. 2, 1995 Sec. 102(e) Date Nov. 2, 1995 PCT Filed Apr. 22, 1994 PCT Pub. No. WO94/25319 PCT Pub. Date Nov. 10, 1994A circuit arrangement for conditioning and evaluating the signals emanating from wheel sensors in a first stage determines the sensor(s) supplying the highest useful signal at very low wheel speeds. The signal from the most sensitive sensor is delivered when the wheel speed is below the predetermined speed threshold. Above the speed threshold, however, the signal from a sensor arranged on a driven vehicle wheel is used as the vehicle speed signal. The circuit is especially suitable for anti-lock and traction slip control systems which supply speed signals which can also be evaluated for other vehicle control or regulating systems.