Underground hybrid network time synchronization method based on time sensitive network

A time synchronization and time-sensitive technology, applied in the direction of synchronization devices, network topology, electrical components, etc., to achieve the effect of improving time synchronization accuracy, reducing stability and accuracy, and reducing forwarding tasks

Inactive Publication Date: 2020-09-11
ANHUI UNIV OF SCI & TECH
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Problems solved by technology

The underground wireless sensor network adopts a multi-sink node non-uniform cluster routing topology and a hierarchical distributed time synchronization algorithm. This method effectively solves the problem of global time synchronization of underground wireless sensor equipment, and ensures the effective use of network resources. It improves the reliability and real-time performance of network data transmission; greatly improves the accuracy and stability of time synchronization, prolongs the life of the network and reduces energy consumption

Method used

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  • Underground hybrid network time synchronization method based on time sensitive network
  • Underground hybrid network time synchronization method based on time sensitive network
  • Underground hybrid network time synchronization method based on time sensitive network

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Embodiment Construction

[0036] like figure 1 As shown, the process of the downhole hybrid network time synchronization method based on the time-sensitive network is:

[0037] Step 1: Deploy node equipment according to the underground structure and application requirements, initialize the global network, and each network communication node in the mine sets its own clock role according to the network structure;

[0038] Step 2: The wired backbone area is connected through the TSN protocol, and each node periodically sends a synchronization notification data frame containing the clock information vector table to the neighbor node, and calculates and compares the best master clock in the entire network according to the best master clock algorithm;

[0039] Step 3: The best master clock in the wired area periodically interacts with the slave clock, the slave clock waits and feeds back and records the time stamp, and the slave clock calculates the clock offset according to the precise time synchronization ...

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Abstract

The invention discloses an underground hybrid network time synchronization method based on a time sensitive network. According to the method, a multi-sink node clustering distributed time synchronization scheme is carried out aiming at the problems of poor time synchronization precision and high energy consumption of a wireless sensor network in a narrow and long area of an underground roadway anda communication difficulty environment. The method comprises the following steps: firstly, establishing a multi-sink node non-uniform clustering routing topological structure by an underground wireless sensor network; secondly, after layering, adopting an accurate clock synchronization algorithm in a convergence network, adopting an estimation algorithm based on Kalman filtering in a wireless main network, and adopting a one-way and two-way hybrid synchronization algorithm in a slave network. According to the method, the time synchronization precision and stability of the underground sensor network are improved, and the energy consumption of the wireless sensor nodes is reduced and balanced.

Description

technical field [0001] The invention relates to the technical field of wireless sensor network time synchronization, in particular to a time-sensitive network-based downhole hybrid network time synchronization method. Background technique [0002] With the development and maturity of real-time Ethernet and 5G technology, the combination of Time Sensitive Networking (TSN, Time Sensitive Networking) and Wireless Sensor Network (WSN, Wireless Sensor Network) has gradually become a necessary means of information fusion. In the narrow and long underground tunnel and special communication environment, wired data transmission cannot be flexibly installed in dangerous special areas, and wireless transmission is difficult to ensure reliable information. The traditional data transmission method for underground safety monitoring in coal mines has a long time delay and low reliability, especially in high real-time working areas. The low time synchronization accuracy will lead to major e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W84/18
CPCH04W56/0015H04W56/004H04W84/18
Inventor 宋昊明黄友锐徐善永韩涛张超
Owner ANHUI UNIV OF SCI & TECH
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