The sensors that directly send signals to the vehicle controller include accelerator pedal sensors, brake pedal sensors and gear switches, where the accelerator pedal sensors and brake pedal sensors output analog signals, and the gear switch output signals are digital signals. The vehicle controller indirectly controls the operation of the driving motor and the charging and discharging of the power battery by sending instructions to the motor controller and the battery management system, and realizes the power on and off of the on-board module by controlling the main relay.
According to the composition of the vehicle control network and the analysis of the input and output signals of the vehicle controller, the vehicle controller should meet the following technical requirements.
When designing hardware circuits, we should fully consider the driving environment of electric vehicles, pay attention to electromagnetic compatibility, and improve anti-interference ability. The vehicle controller should have a certain self-protection capability in terms of software and hardware to prevent extreme situations from happening.