Synchronous and batch calibration method for time base of WSN (Wireless Sensor Networks) nodes

The invention discloses a synchronous and batch calibration method for the time base of WSN nodes. The method comprises that a main node of the WSN obtains an accurate clock signal from an accurate time service source; the main node broadcasts the accurate clock signal to all auxiliary nodes of the WSN; and the auxiliary nodes calibrate the local clocks according to the received accurate clock signal. Thus, the time base of the nodes can be calibrated and unified synchronously, so that synchronous sleep scheduling of the nodes can be carried out in a longer time, and the performance in accurately synchronizing the network is improved.