Single-channel input multi-state output circuit and method and vehicle

The invention relates to a single-channel input multi-state output circuit and method and a vehicle, the circuit comprises a plurality of voltage division circuits, a plurality of voltage comparison circuits and a plurality of gate circuits, the number of the voltage division circuits is the same, the voltage comparison circuits are in one-to-one correspondence with the voltage division circuits, each voltage division circuit performs voltage division on the same source voltage signal, a to-be-compared signal connected to the first input end of each voltage comparison circuit is an output signal of the voltage division circuit, and a same reference signal is connected to the second input end of each voltage comparison circuit, wherein the voltage comparison circuits are arranged in sequence. The to-be-compared signal of each voltage comparison circuit is greater than the to-be-compared signal of the next voltage comparison circuit; and each pair of circuit groups consisting of two adjacent voltage comparison