Description
Jiaxing Sente Auto Parts Co.,Ltd
The wheel speed sensor was initially used to replace the mechanical linkage from the road wheels to the speedometer, eliminating cable breakage and simplifying the gauge construction (elimination all moving parts except for the needle/spring assembly). With the advent of automated driving aids, such as electronic ABS , the sensor also provided wheel speed data to the controllers to assist the operator in maintaining control of the vehicle. The vehicle Speed sensor is also used for the proper shifting up of gears for the vehicle maintenance. The wheel speed sensors are installed directly above the pulse wheel, which is connected to the wheel hub or the drive shaft. The pole pin inside a coil is connected to a permanent magnet and the magnetic field extends to the pulse wheel. The rotational movement of the pulse wheel and the associated alternation of teeth and gaps effects a change in the magnetic flux through the pulse wheel and the coil. The changing magnetic field induces an alternating voltage in the coil that can be measured.
