Design and research of adjustable auxiliary device for TPMS EMC test

At present, the electromagnetic compatibility test of direct tire monitoring system is usually carried out by means of pressure tank activation sensor. The disadvantage of this method is that it can only provide a constant pressure value, which is inconvenient to observe the phenomenon, and it is difficult to simulate the real car environment. In this paper, a set of EMC test adjustable auxiliary device for direct tire pressure monitoring system is designed to simulate the tire pressure environment in the process of real vehicle driving. Built in an existing laboratory environment, the device can provide varying air pressure from 0 to 6bar, providing more accurate test conditions for tire pressure tests that are closer to the actual working environment.