Industrial wireless network time synchronization correction method based on TDMA

一种工业无线网络、时间同步的技术，应用在网络技术,物联网,无线传输技术领域，能够解决随机误差影响等问题，达到实时性提高、降低能耗、计算量小的效果

Active Publication Date: 2015-06-17
MICROCYBER CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] (2) Effect of random error

Method used

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Embodiment Construction

[0044] Below with the accompanying drawings Figure 1-5The present invention is described in further detail.

[0045] The TDMA-based industrial wireless network time synchronization correction method runs on the TDMA network platform. The TDMA network divides the time axis into superframes of a certain length, and each superframe is divided into several time slots;

[0046] Each node in the network is assigned a certain number of time slots to receive or send information within a superframe, and each network node has precise timing;

[0047] The clocks of each node in the network must be synchronized to achieve normal communication;

[0048] Clock synchronization, each node in the network realizes the same time of each node by exchanging messages, referring to the same node, and using algorithms to estimate the time of the other party.

[0049] Clock synchronization. In addition to completing the time synchronization process between nodes in the network, the nodes that need ...

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Abstract

The invention relates to the field of industrial automation and wireless communication, and particularly discloses an industrial wireless network time synchronization correction method based on a TDMA. The high-accuracy time synchronization technology is invented by adopting the research on the TDMA communication mechanism and analyzing time synchronization between nodes in an industrial wireless network. The technology has the advantages of being high in time accuracy, small in calculation amount, small in data transmission load, and the like. The effects of the technology are verified through an independently-researched and independently-developed WH-M module and platforms such as a PC and a serial port debugging tool SSCOM32.exe under the error condition that the system clock is 24 M and the drifting error is 10 ppm, the technology can be obtained, 83% of time synchronization errors can be reduced, and the technology has universality for a TDMA network.

Description

technical field [0001] The invention relates to the fields of wireless transmission technology, network technology and the Internet of Things, in particular to a method for synchronizing node time based on industrial wireless networks. Background technique [0002] With the development of control, computer, communication, network and other technologies, the field of information exchange and communication is rapidly covering from field equipment to various control fields, and the industrial wireless technology that emerged at the beginning of this century has triggered a major change in the traditional industrial measurement and control mode. Industrial wireless network is developed from the emerging wireless sensor network, which has the characteristics of low cost, low energy consumption and high flexibility. It has become another research hotspot after the industrial bus. Now the western industrial powers represented by the United States and Germany have invested heavily i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04B7/26
CPCH04W56/001
Inventor 杨祖业李世兴魏剑嵬李勇王进超
Owner MICROCYBER CORP
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