Research of Anti-Interference Technology Based on Magnetic Field Variation of Vehicle

The vehicle detector induces a magnetic field variation around the vehicle to decide the vehicle status. However, the three-way relationship among the axial direction of vehicle detector, the parking direction and the magnetic field direction will result in great interference for detection sensitivity. In order to solve the low sensitivity caused by three-way angle such as the interference caused by near vehicle, this study analyzes the fundamental relationship among these three angles and establish a vehicle detection model to reduce the interference based on the principle of pace magnetic field. And then test every axial direction of the 2-Axis magnetic vehicle detector by parking the near vehicle in different directions. By doing this, the writer can draw the conclusion of how to make the principle axis output a peak value of sensitivity and the secondary axis a low peak value of sensitivity, thus to improve detection sensitivity and reduce the interference of adjacent space. In this way, the data which shows the relationship between angle and interference will help companies in Taicang, Jiangsu to obtain good economic benefits.