1. Basic information:
odometer sensors are divided into magnetoelectric type, electronic Hall type, reed type, of which 90% of the products are electronic Hall switch type.
2. Introduction of the core components:
Magnetoelectric products mainly consist of enamelled wire and permanent magnet, magnetic core; electronic Hall products mainly consist of Hall and permanent magnet; dry spring products mainly consist of dry reed and permanent magnet.
3. Introduction of working principle:
odometer sensor is installed on the gearbox housing; gear or bearing rotation parameters are converted into pulse voltage signal, transmitted to the instrument, the instrument through the collection of pulse signal number, the number of wheel rotation turns, converted into kilometers displayed.
4. Introduction of failure:
product usage damage, there will be a fault alarm lamp on the automotive instrument, no speed indicator, with the computer board detection, odometer sensor or speed sensor fault code.