Synchronous method for wireless sensor network node dormancy low power consumption protocol

A wireless sensor network, low power consumption technology, applied in the direction of synchronization device, wireless communication, power management, etc., can solve the problems of high power consumption, poor module accuracy, etc., to reduce the power consumption of nodes and networks, and ensure the accuracy of node clocks Effect

Active Publication Date: 2013-09-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Synchronous method for wireless sensor network node dormancy low power consumption protocol
  • Synchronous method for wireless sensor network node dormancy low power consumption protocol
  • Synchronous method for wireless sensor network node dormancy low power consumption protocol

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Embodiment

[0028] This embodiment describes a synchronization method of a wireless sensor network node dormancy low power consumption protocol. The nodes are equipped with an MCU for controlling the working state of the node. When the MCU is in the working state, an external crystal oscillator or other forms of external clocks are used. The source provides the clock. When the MCU is in a dormant state, the internal oscillator circuit is used to provide the clock. When the node participates in the networking process, by using the flood synchronization method, the independent hierarchical networking of the discrete nodes is realized, and the network starts from the root node. Hierarchical synchronization to end nodes.

[0029] Propagate network time packets by broadcasting, including the following main steps:

[0030] Step 1. The base station nodes in the network and the nodes that have completed clock synchronization periodically broadcast beacon data packets, and these sensor nodes are u...

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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...

Claims

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Application Information

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IPC IPC(8): H04W52/02H04W56/00
CPCY02D30/70
Inventor 刘昊朱明明
Owner SOUTHEAST UNIV
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