Magnetic sensor is the magnetic field, current, stress and strain, caused by external factors, such as temperature, light sensitive element magnetic can change into electric signal, in this way to detect the corresponding physical quantities of devices. Magnetic sensor is more and more popular among customers, but because of the particularity of magnetic sensor, magnetic sensor installation when must pay attention to some things.
Magnetic sensor is the most main is to be far from an electric motor, the magnetic field strength generated in the electric motor is greater than the earth's magnetic field intensity, so the motor proximity sensor will produce hard magnetic distortion. We suggest that the sensor installation location should be as far as possible away from the motor, if not actually make the sensor away from the motor, shielding motor may be helpful to reduce the distortion, but, unfortunately, the method of shielding motor may cause soft magnetic soft magnetic distortion because of shielding materials. Use of tracking and error analysis to find the size of a position or shielding means the sensor to achieve the best performance in your system.
Magnetic sensor technology is more and more mature, but the anti-interference of the magnetic sensor is not very good, so try to stay away from the high magnetic field intensity.