Design of Dual MCU Vehicle Control Unit Based on Electric Vehicles to Respond to Control Failure

The Vehicle Control Unit (VCU) is the core component of the entire car. It is responsible for collecting the accelerator pedal signal, brake pedal signal, gear signal and other component signals, and makes corresponding judgments based on the vehicle status to control the next controllers of each component of the layer act to drive the electric vehicle. This article introduces the overall system structure of the electric vehicle and the structural characteristics of the Vehicle Control Unit, analyzes the benefits of the dual MCU Vehicle Control Unit to the electric vehicle, and finally establishes the corresponding detection and response methods when various possible failures occur. The detection and response mechanism uses the main and auxiliary dual MCUs as the control core and cooperates in processing. When the main MCU fails, the auxiliary MCU takes over the control to avoid the uncontrollable safety problems caused by the control of the entire vehicle when the single MCU fails.The dual MCU controller uses the main and auxiliary differentiated design, and the functional design of the main and auxiliary MCUs is based on the functional modularity idea. After the main MCU meets the functions of vehicle control and other functions, the sensor signal detection and other functions are added to the auxiliary MCU. A dual MCU Vehicle Control Unit based on electric vehicle response to control failure is presented.