The Hall device is a magnetic sensor. They can be used to detect magnetic fields and their changes, and can be used in a variety of applications related to magnetic fields. Hall devices are based on the Hall effect. Hall devices have many advantages. They are solid in structure, small in size, light in weight, long in life, easy to install, low in power consumption, high in frequency (up to 1 MHZ), resistant to vibration, and not afraid of dust, oil, water vapor and salt spray. Contaminated or corroded.

principle:

There is a Hall type to judge the current motor movement state by the Hall model of the motor. Then the controller then controls the three-phase output of the controller according to the signal collected by the Hall to supply power to the motor, so that the motor continues to work

normally.

No Hall type is the motor no Hall sensor, the controller through the current acquisition to determine the current state of motion of the motor, and then control the controller output to power the motor, let the motor compete for production.

effect:

There are Hall type motors and controllers that are stable during use, with high torque at start-up and no abnormal noise.

Hall-free motors and controllers are not very stable due to technical problems during use, especially at the initial stage, with poor stability and insufficient power.
Hall sensors are used in many places in electric bicycles, such as speed control handles, brake levers, and brushless motors.

Electric car speed control: Speed control is the speed control component of electric vehicle. This is a kind of linear speed control component. It has many styles but the working principle is the same. It is generally located on the right side of the electric vehicle, in the direction of the right hand when riding, and the angle of rotation of the electric vehicle handle is between 0 and 30 degrees.

Electric brake lever: The turn signal is the drive signal for the electric motor to rotate, and the brake signal is the brake signal for the motor to stop rotating. The electric vehicle standard requires the electric vehicle to automatically cut off the power supply to the motor when the electric brake is braked. Therefore, there should be a brake lever position sensing element on the electric brake lever. When the brake brake is actuated, the brake signal is transmitted to the controller, and the controller stops the power supply to the motor immediately after receiving the brake signal.

Brushless motors: Today's electric bicycles generally use the following three types of motors: high-efficiency low-speed rare earth permanent magnet DC brushless motors, high-efficiency low-speed permanent magnet DC brush motors, and high-efficiency high-speed rare earth permanent magnet DC brush motors. During the rotation of the DC motor, the current in the winding is constantly changing direction to rotate the rotor in one direction.

Among them, the brush motor is commutated by means of mechanical contact between the brush and the phase changer; and the brushless motor detects the signal of the real-time running position of the winding through the hall-sensor, and then passes through the microprocessor or the special chip. The collected signals are processed, and the corresponding drive circuit is controlled in real time to control the motor windings. Since the commutation of the brushless motor is performed by the sensor and related circuits, the motor has no mechanical contact and wear of the brush and the phase changer, and does not need to frequently change the vulnerable device such as a brush, thereby effectively improving the motor. Service life and reduced maintenance costs.