Shielding Technology in Automotive Sensors

Shielding technology is one of the important means of anti-interference for automotive sensors, mainly including electrostatic shielding, electromagnetic shielding and low-frequency magnetic shielding. Electrostatic shielding uses metals with good conductivity (such as copper and aluminum) to make a closed metal container and connect it to the ground wire to prevent the external electric field from interfering with the internal circuit. Electromagnetic shielding uses metal materials with good conductivity to make shielding covers, shielding boxes, etc., which surround the protected circuit to shield the high-frequency magnetic field. Low-frequency magnetic shielding uses high-magnetic-permeability materials as shielding layers to isolate the low-frequency magnetic field and fixed magnetic field coupling interference.