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Dynamic Driving Safety Systems ABS Active Wheel Speed Sensor • The active wheel speed sensors are either hall element type or giant magneto resistor • The height of the signal is not affected by the wheel speed. This means the active wheel • The CM uses the number of pulses per second to calculate the wheel speed. The vicinity of the magnetic layer on a wheel bearing (e.g. when replacing the bearing)
L2003_02011
A Detection principle 3 Magnetic rubber (magnetic encoder) B Output waveform 4 Semiconductor element 1 ABS wheel-speed sensor 5 Sensor output signal 2 Active drive circuit 6 Semiconductor element signal Curriculum Training 02-19 |