What does automotive VR mean?

[DeDylan]

Automotive VR refers to Variable Reluctance Sensor. The basic working principle of a variable reluctance sensor is: it consists of a coil passing through an electromagnet, and a gear tooth passes by the surface of the magnet, causing a change in the amount of magnetic flux. When the protruding part of the target moves close to the sensor, the magnetic flux is at its maximum. The variable reluctance sensor, also known as a self-inductance sensor, is a type of inductive sensor that utilizes changes in the coil's self-inductance for measurement. The variable reluctance sensor is composed of a coil, iron core, and armature, and it can be used to measure displacement and dimensions, as well as other parameters that can be converted into displacement, such as force, tension, pressure, differential pressure, strain, torque, speed, and acceleration.