Lock state monitoring apparatus, method, lock driving apparatus and lock assembly

A lock state monitoring apparatus, wherein the apparatus is applied to a lock, and the apparatus comprises:

• a rheostat and a first load;
• a movable contact end of the rheostat is connected with a first end of the first load, and a first fixed end of the rheostat and a second end of the first load are configured to bear a first voltage;
• the movable contact end of the rheostat is configured to be connected with an output axis of a drive motor in the lock, so that the drive motor drives the movable contact end to move to change a resistance value between the first fixed end and the movable contact end;
• the first fixed end and the movable contact end, or two ends of the first load, are configured to be connected with a main control board in the lock to output a first voltage signal to the main control board, so that the main control board determines a lock state according to the first voltage signal, wherein the lock state comprises:
• an unlocked state and a locked state;
• wherein the apparatus further comprises:
• a second load;
• a first end of the second load is configured to be connected with a first input of the drive motor, so that a driving output current drives the drive motor after flowing through the second load;
• two ends of the second load are configured to be connected with the main control board to output a second voltage signal to the main control board, so that the main control board determines, according to the second voltage signal, whether the lock reaches a clamping position.