Device time synchronization control method and system in wireless mesh network

A system for the device time synchronization control in the wireless mesh network, comprising a controller and a plurality of node devices, wherein further comprising:

• a pulse converter, applied to converting an input AC into a periodic pulse signal;
• the controller comprises an instruction transfer module, applied to sending a time setting instruction to one or more adjacent node devices at a preset time;
• the node devices comprise a time renewal and forward module, applied to updating a device time according to a preset algorithm when a pulse signal is at a rising edge or a falling edge, and forwarding the updated device time to one or more other adjacent node devices as a setting time, before a next rising edge or falling edge arrives;
• the controller further comprises an instruction control module, applied to sending a control command to each of the node devices, when all of the node devices have completed updating the device time;
• the node devices further comprise an executing and control module, applied to controlling all of the node devices to execute the control command synchronously when an executing time arrives.