The present invention relates to a wheel speed sensing circuit for sensing a vehicle speed of a commercial vehicle, which takes into consideration the point that the output of each wheel speed sensor cannot always be the same by the situation of a road condition, steering wheel operation, acceleration, and deceleration to sense the wheel speeds of the wheels of a commercial vehicle and then remove unnecessary noise so as to sense the wheel speeds without distortion or overlapping. The wheel speed sensing circuit for sensing the vehicle speed of a commercial vehicle comprises: a plurality of wheel speed sensors (3, 4, 5, 6) to sense the wheel speeds of the wheels of a commercial vehicle; and wheel speed sensing circuits (7, 8, 9, 10) to process wheel speed sensing signals sensed by the wheel speed sensors (3, 4, 5, 6). Two signal output lines of the wheel speed sensors (3, 4, 5, 6) are directly connected to the inputs of the wheel speed sensing circuits (7, 8, 9, 10) to prevent various aspects of noise created from the commercial vehicle from entering. Shield wires for blocking external noise are applied to two signal output lines. The shield wires enclosing the two signal output lines are grounded on the wheel speed sensing circuits (7, 8, 9, 10) instead of the ground of the commercial vehicle.
본 발명은 노면상태, 조향핸들 조작, 가속 및 감속의 상황에 의해 각 휠속도센서 출력은 항상 같을 수 없는 점을 감안하여 상용차 바퀴의 휠속도를 각각 센싱한 다음 불요성 노이즈를 제거함으로써 휠속도를 왜곡이나 중첩없이 센싱되도록 한 상용차의 차속 센싱을 위한 휠속도 센싱회로에 관한 것으로, 상용차의 차륜 휠속도를 각각 감지하는 복수의 휠속도 감지센서(3)(4)(5)(6)와, 상기 휠속도 감지센서(3)(4)(5)(6)가 감지한 휠속도 감지신호를 각각 처리하는 휠속도 센싱회로(7)(8)(9)(10)를 포함한다. 상기 휠속도 감지센서(3)(4)(5)(6)의 2개 신호출력선은 휠속도 센싱회로(7)(8)(9)(10)의 입력에 바로 접속시켜 상용차로부터 발생되는 다양한 양상의 노이즈(Noise)가 유입되지 않도록 구성되고, 2개의 신호출력선은 외부 노이즈를 차단하는 쉴드선을 적용하되, 상기 2개의 신호출력선을 둘러싸는 쉴드선은 상용차의 그라운드가 아닌 휠속도 센싱회로(7)(8)(9)(10)에 각각 접지시키도록 함을 특징으로 할 수 있다.
A passive wheel speed sensing circuit for sensing the vehicle speed of a commercial vehicle
상용차의 차속 센싱을 위한 휠속도 센싱회로
2020-07-08
Patent
Electronic Resource
Korean
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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