Typesof Wheel Speed Sensors. Vehicles commonly use two-wheel speed sensors: Magnetic inductive sensor. Hall effect sensor. The magnetic inductive sensor relies on a toothed wheel or a tone ring with magnetic properties. In contrast, the Hall effect sensor uses a magnet and a semiconductor to detect wheel speed. Temperaturesensing; Hall Effect Sensors: Bicycle wheels; Gear-teeth; Speedometers; Automotive ignition systems; Generally speaking, vehicle speed sensors can also use other methods to determine wheel speed, such as optical sensors. This makes them suitable for different applications as well; bringing with them their own advantages and Awheel-speed sensor consists of a silicon integrated circuit in the sensor head, which is hermetically sealed with overmolded plastic. Bosch wheel-speed sensor circuits use Hall technology, which incorporates the Hall-sensing element, signal amplifier and signal processing all on a single chip. Bytesting the abs sensor / wheel speed sensor you will be able to find out which abs wheel speed sensor is bad and replace only the one that needs to be replaced. It takes very short time to test Thereare two types of wheel speed sensors: the active sensor and the passive sensor. Active Wheel Speed Sensors. The wheel speed sensors that are categorised as active sensors have a stark difference from the passive speed sensor. The active wheel speed sensor is said to be "activated" only when supplied with a voltage and generates an Themerging and processing of the individual wheel speed sensor signals by the control unit provide a single reference speed which is roughly the vehicle speed. A comparison of any individual wheel speed with the reference speed supplies the wheel to road slip (wheel tending to lock) signal. Theyhave two wires: signal and ground. Inside a passive WSS sensor is a permanent magnet core surrounded by copper wire windings. When the teeth on the tone ring rotate past the sensor tip, it changes the magnetic field and induces a current in the sensor windings. The result is a classic sine wave current pattern that changes with wheel speed. Asyou drive, a wheel speed sensor record the speed of its respective wheel'and sends the data to the ABS module. Four-wheel ABS always has a sensor for each wheel typically installed directly on the wheel axle or behind the wheel's brake rotor. Thereare two different types of wheel speed sensors, active and passive. Before you can diagnose a suspected faulty wheel speed sensor, you need to have a good understanding of the type of sensor Chapter1: Animation and Commercial Vehicle Wheel Speed Sensor Market Product Definition, Product Types, Volume, and Revenue Analysis of Each Type in North America, Europe, Asia-Pacific, Latin UTwWiUu.