Field protection type ARM processor self-weight starting and resetting circuit and method

The invention relates to a field protection type ARM processor self-weight starting and resetting circuit. The self-weight starting and resetting circuit comprises a timer self-weight starting and resetting control unit, a restarting execution resetting unit and an output state self-locking maintaining unit. During initial power-on, the self-weight start and reset control unit is controlled by the processor to output a low level, so that the restart execution circuit is controlled to be in a non-working state; when the restart timing time is up, the processor outputs a low level, drives a monostable trigger circuit in the self-weight start and reset controller unit to output a high level, controls a relay in the restart execution reset circuit to act, and further disconnects the processor from the power supply; and after the monostable circuit enters the stable state again, the relay recovers to the initial state, so that the processor is powered up again to enter the working state, and meanwhile, the restart