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

A wireless sensor, time base synchronization technology, applied in synchronization devices, wireless communication, network topology, etc., can solve the problem of low efficiency of clock synchronization calibration, and achieve the effect of improving performance

Inactive Publication Date: 2015-07-22
CHINA ACAD OF TRANSPORTATION SCI
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[0004] In view of this, the embodiment of the present invention provides a wireless sensor network node time base synchronization batch cali...

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

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[0032] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0033] According to an embodiment of the present invention, a wireless sensor network node time base synchronization batch calibration system is provided, including a wireless sensor network master node and multiple slave nodes, in this system, a precise clock signal is obtained from a precise timing source through the master node, It is then broadcast to all slave nodes in the network, and the slave nodes are calibrated according to the precise clock signal.

[0034] figure 1 is a schematic structural diagram of a wireless sensor network node time base synchronization batch calibration system according to an embodiment of the present invention, as shown in figure 1 As shown, the wireless sensor ne...

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Abstract

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.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a batch calibration scheme for time base synchronization of wireless sensor network nodes. Background technique [0002] Wireless sensor network (Wireless Sensor Networks, WSN) is composed of a large number of sensor nodes, usually including a large number of distributed nodes of self-organizing and multi-hop wireless networks, a network integrating data collection, fusion processing and communication, which has the characteristics of group The network is fast, flexible, and not subject to the constraints of wired networks. Therefore, it has shown broad application prospects in the fields of national defense, military, environmental monitoring, medical and health care, and home care. [0003] Time synchronization is an important part of any distributed system, and it is also an important supporting technology of wireless sensor network, which is critical to the d...

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Application Information

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IPC IPC(8): H04W56/00H04W84/18
CPCH04W56/0015H04W84/18
Inventor 谷云辉张永军付立李伯勇吕庆辉黄阿琼刚红润
Owner CHINA ACAD OF TRANSPORTATION SCI
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