What are the types of vehicle speed sensors?
1 Answers
There are several types of vehicle speed sensors: 1. Magnetic speed sensor; 2. Hall effect speed sensor; 3. Photoelectric speed sensor. The vehicle speed sensor is a device used to detect the speed of electronically controlled vehicles, providing input signals to the control computer to regulate engine idle speed, torque converter lock-up in automatic transmissions, automatic transmission shifting, and the operation of engine cooling fans and cruise control. Magnetic speed sensor: It is an analog AC signal generator, typically consisting of a magnetic core with two terminals and a coil. Hall effect sensor: A solid-state sensor primarily used for detecting crankshaft rotation angle and camshaft position, triggering ignition and fuel injection circuits. Photoelectric speed sensor: A solid-state optoelectronic semiconductor sensor composed of a rotating disc, two optical conductor fibers, a light-emitting diode, and a phototransistor serving as the light sensor.