Vehicle controller and signal processing method thereof and signal processing device thereof

The invention discloses a vehicle controller and a signal processing method and signal processing device thereof. The processing method comprises the following steps of collecting the state signal of a vehicle, and performing electrostatic protection treatment on the state signal; obtaining the voltage value of the state signal after electrostatic protection treatment, performing voltage division treatment on the processed state signal according to the voltage value of the state signal; and transmitting the state signal after voltage division treatment to an A/D translating channel of the vehicle controller. According to the signal processing method disclosed by the invention, varied input signals can be collected; the purpose that a platform is shared by a plurality of vehicle types, so that the development cost of the vehicle controller is reduced is realized; the construction of the electronic control units of the vehicle controller can be simplified; the usage quantity of components is reduced and the failure probability is reduced.