The Hall wheel speed sensor should

The Hall wheel speed sensor should include switch-type integrated Hall sensor and linear integrated Hall sensor.The integrated Hall sensor is to manufacture a Hall-effect device with a sensor function on a silicon chip while manufacturing a silicon integrated circuit, so that the integrated circuit has the characteristics of being sensitive to magnetic fields. The Hall switch circuit is also called Hall digital circuit, and is composed of voltage regulator, Hall plate, differential amplifier, Schmitt trigger and output stage. Under the action of the external magnetic field, when the magnetic induction exceeds the conduction valve, the output tube of the Hall circuit turns on and outputs a low level. After that, B increases and remains turned on. If the B value of the applied magnetic field decreases to BRP2, the output tube is turned off and the high level is output. We call the BOP the working point and the BRP release point. BOP-BRP = BH is called hysteresis. The existence of hysteresis enhances the anti-interference ability of the switching circuit.This system uses a three-channel four-sensor arrangement, requiring four sensors. The composition of Hall sensor: sensor head, ring gear. The sensor head is composed of permanent magnet Hall element and electronic circuit.