Circuit for automatic restart recovery after crash of access control equipment

The utility model discloses a circuit for automatically restarting and recovering access control equipment after crash, which comprises a relay, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a capacitor, a diode, a first triode and a second triode, the type of the watchdog chip is MAX6369KA, a first pin of the watchdog chip is electrically connected with a GPIO0 end, a second pin of the watchdog chip is grounded, a third pin of the watchdog chip is suspended, a fourth pin of the watchdog chip is electrically connected with a fifth pin of the watchdog chip and one end of a second resistor, and the other end of the second resistor is electrically connected with a fourth pin of the watchdog chip. And the other end of the second resistor is electrically connected with the VCC-IO end. According to the utility model, the access control system is more intelligent, and can be automatically powered off and restarted and recovered after