SELF-LOCKING AND DETECTION CIRCUIT AND APPARATUS, AND CONTROL METHOD

Disclosed are a self-locking detection circuit and apparatus, and a control method. The self-locking detection circuit includes a self-locking circuit and a detection circuit. The self-locking circuit includes a three-terminal transistor group and a first input end, the three-terminal transistor group including a first transistor and a second transistor. The detection circuit includes a pull-up resistor, a bleeder resistor, and a third transistor, a first end of the pull-up resistor being provided with a first terminal for signal output, and a third end of the third transistor being provided with a second terminal for signal output. The first input end is provided between a first end of the third transistor and the first terminal, and the first input end is configured to receive a level signal output from a controller. The self-locking detection circuit and apparatus, and the control method according to the present application are resistant to interference, and have high reliability and safety. Level signals at the first terminal and the second terminal are detected after a low-level signal is input to the first input end, such that a self-locked state of the self-locking circuit can be checked in real time, and the self-locking circuit can be controlled to unlock the self-locked state in a power-on mode.