How is the Hall switch applied in the automobile gearbox

Today, cars tend to shift from manual to automatic. This is not only because driving is easier and more convenient, but also because in a city with heavy traffic, people can only change gears frequently and cannot enjoy a high-quality driving experience.

The automatic transmission can automatically change the transmission ratio according to conditions such as engine load and vehicle speed, so that the car can obtain good power and fuel economy, and reduce engine emission pollution. The automatic transmission is simple to operate, and can greatly improve the safety and reliability of the vehicle when the vehicle is crowded. The structure of the automatic transmission is slightly more complicated than that of the manual transmission, but its function is greatly improved.

The automatic transmission adopts a high efficiency and high reliability hydraulic torque converter/planetary gear design. In the past few decades, this design has been tested under heavy load conditions around the world and is still being improved. The core of an automatic transmission is to realize automatic shifting. The so-called automatic shift refers to the fact that the driver controls the accelerator pedal (accelerator pedal) according to the needs of the driving process during the driving of the car.

The automatic transmission can automatically shift gears according to the engine load and the working conditions of the car. Application of Hall Switch in Automatic Transmission In automatic vehicles, the shift lever and transmission operate in a non-contact sensing mode. The shift lever transmits the shift signal (also called shift-by-wire) to the transmission through electronic signals.

In order to detect the position of the shift lever in the gearbox, it is recommended to use a Hall sensor. It can not only detect the position, but also send a gear signal to the gearbox. The TCU transmission control unit is used to further control the transmission signal processing. According to the customer's mechanical structure, Hall switches or three-axis Hall sensors can be used to detect all PRNDL gears.