Single-door control circuit for train

A single-door control circuit for a train, having a door control unit, a single-door button located in a cab, and an electric unlocking switch located outside a door of the train, wherein

• the single-door control circuit for the train comprises a first circuit for controlling a single door when the train is in a sleep state, and a second circuit for controlling the door of the train when the train is in a wake-up activated state, the door control unit is provided with a power input port (POW+), a first signal port of the single-door button (I15), a signal port of the electric unlocking switch (I16), and a second signal port of the single-door button (I18),
• the first circuit comprises:
• a normally-closed contact of a wake-up relay (WUR) connected to a positive pole of a storage battery power supply of the train,
• a first contact of the single-door button (S1-1) connected between a low-potential terminal of the normally-closed contact of the wake-up relay (WUR) and the first signal port of the single-door button (I15);
• a first contact of the electric unlocking switch (S2-1) connected between the low-potential terminal of the normally-closed contact of the wake-up relay (WUR) and the signal port of the electric unlocking switch (I16);
• a second contact of the single-door button (S1-2) and
• a second contact of the electric unlocking switch (S2-2) connected in parallel between the low-potential terminal of the normally-closed contact of the wake-up relay (WUR) and the power input port (POW+);
• and
• the second circuit comprises:
• a power supply line connected between a positive pole of a prepared power supply of the train and the power input port (POW+),
• a normally-open contact of a cab activation relay (COR),
• a normally-open contact of a zero velocity relay (ZVR) and
• a third contact of the single-door button (S1-3), wherein the normally-open contact of the cab activation relay (COR), the normally-open contact of the zero velocity relay (ZVR) and the third contact of the single-door button (S1-3) are sequentially connected in series between the positive pole of the prepared power supply of the train and the second signal port of the single-door button (I18).