Synchronization method of wireless sensor network node sleep low power protocol

Abstract

The invention discloses a synchronous method for a wireless sensor network node dormancy low power consumption protocol. An MCU used for controlling the work state of each node is arranged on each node. When each MCU is in a work state, a clock is offered by an external crystal oscillator or an external clock source of other modes. When each MCU is in a dormant state, the clock is offered by an internal oscillation circuit. In the process that nodes participate in networking, autonomously layered networking of discrete nodes is achieved through a flooding synchronous mode, and meanwhile, the layered synchronization of a network from the root node to the tail end node is achieved. The synchronous method for the wireless sensor network node dormancy low power consumption protocol can fully guarantee the clock accuracy of the nodes, network clock synchronization and normal use, and meanwhile effectively reduces the power consumption of the nodes and the network.

Description

technical field [0001] The invention relates to the technical field of wireless sensor network clock synchronization, in particular to a synchronization method of a wireless sensor network node sleep low power consumption protocol. Background technique [0002] WSN is the abbreviation of wireless sensor network, that is, wireless sensor network. Wireless sensor network (WSN) is composed of a large number of cheap micro-sensor nodes deployed in the monitoring area, and forms a multi-hop self-organizing network system through wireless communication. Perceive the information of the object and send it to the observer. Due to the convenience and power of WSN, more and more attention has been paid to it, but power consumption and clock synchronization technology have always been regarded as the focus and difficulty in WSN applications. [0003] Nowadays, wireless sensor network applications pay more and more attention to low power consumption. The industry has proposed many solu...

AI Technical Summary

Problems solved by technology

In comparison, the external crystal oscillator and external clock circuit generate large power consumption, and the internal clock generation module consumes the least power consumption; but the clock accuracy provided for the MCU is just the opposite, and the internal clock generation module has the worst accuracy

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