Steering Angle Sensor For 09-13 Toyota Corolla Matrix Highlander OE#89245-02050

The working principle of an automotive Angle sensor is to precisely measure the rotation Angle or position by detecting changes in the magnetic field or other physical quantities.
The working principle of automotive Angle sensors can be classified into the following types: Firstly, it is the rotating sensitive element. This principle indirectly measures the rotation Angle or position of an object by detecting changes in the magnetic field or light in the environment. This method takes advantage of the interaction between a rotating object and its environment, thereby achieving the measurement of the rotation Angle. Secondly, there is the capacitive principle. This principle is based on the capacitance difference between the object and the sensor, and obtains the rotation Angle or position information by measuring the capacitance change. When the object being measured rotates, the distance between the object and the sensor will change, which leads to a change in the capacitance value. Then, the rotation Angle can be obtained through the change in capacitance. Furthermore, it is the photoelectric principle. The photoelectric principle utilizes the photoelectric effect to measure the reflection or transmission of light to obtain the rotation Angle or position. When light passes through a rotating object, the rotation Angle of the object can be calculated based on the reflection or transmission of the light. In addition, there is a variable capacitor principle, which achieves measurement through the combination of movable electrodes and fixed electrodes. When the object under test rotates, the movable electrode rotates along with the object, while the fixed electrode remains stationary. Through the C-V conversion circuit, the electrostatic capacitance between the electrodes is converted into a voltage signal, which is output as a detection signal. Finally, there is the principle of the combination of magnets and Hall switch circuits. This principle detects physical quantities such as the number of revolutions, rotational speed, Angle and angular velocity of a rotating object through the combination of magnets and Hall switch circuits.