Automotive ECU is an electronic control unit. ECU is the abbreviation of ElecmalControlUnit. It is composed of microprocessor, memory, input and output interface, analog-to-digital converter, shaping, driver and other large-scale integrated circuits. The voltage operating range of the automotive ECU is 6.5 to 16V, the operating current is 0.015 to 0.1A, the operating temperature is minus 40 degrees Celsius to 80 degrees Celsius, and it can withstand vibrations below 1000 Hz. The functions of ECU are: 1. Fault self-diagnosis and protection; 2. Adaptive; 3. The ECU of the entire vehicle can be formed into a network system.