Device and method preventing equipment from ossifying in residential internet gateway device

The utility model discloses device preventing equipment from ossifying in a residential internet gateway device. The device comprises a watchdog circuit, and the watchdog circuit comprises a watchdog chip. A manual reset end of the watchdog chip is connected with a switching circuit and a first resistor-inductor (RC) circuit. The manual reset end of the watchdog chip is also connected with an output end of a dog-feeding signal of the watchdog chip. A voltage monitoring input end of the watchdog chip is connected with a dog-feeding input pin of an outer central processing unit (CPU). A voltage monitoring output end of the watchdog chip is connected with a dying gasp pin of the outer CPU. A reset output end is connected with an outer interrupt pin of the outer CPU. According to the device and a method which prevent the equipment from ossifying in the residential internet gateway device, hardware and software design techniques of an embedded device are combined, anti-ossification functions in a plurality of scen