Synchronous awaking mechanism of long-term and deep dormant wireless sensor network

The invention discloses a synchronous awaking mechanism of a long-term and deep dormant wireless sensor network. Through externally adding a clock chip and electrifying the clock chip by adopting a standby battery when a power module is undervoltage, the synchronous awaking mechanism can enhance the node timing precision so as to reach the synchronization on the physical layer. The clock chip can time the time in the form of years, months, days, hours, minutes and seconds, so that the maneuverability of the dormancy timing is improved. A synchronization algorithm taking a monitoring center clock as a standard is adopted to correct a distributed clock in software, thereby realizing the synchronization on a MAC (media access control) layer. A long\short time dormancy combination method is adopted to solve the problem that topology changes because nodes join or quit the network, so that the nodes in the new structure and the network are synchronically dormant. Sink nodes adopting dormant mode are more energy-sav