Topology control method for wireless sensing network of railway traffic

Abstract

The invention discloses an implementation method for a wireless sensing network of railway traffic, which comprises the following steps: firstly, dividing regions along railways needing to transfer train traveling information into a plurality of sections, and establishing a convergent node at each section; further dividing the section into M region blocks the length of which is 1; computing the number ni of wireless nodes needing to be arranged in each region block, thereby computing the distance di between every two wireless node pieces in each region block, wherein di is equal to 1/ni; uniformly arranging the wireless nodes in the middle of each region block according to the distance di, and sequentially configuring an ID number for each wireless node; enabling the wireless nodes to work and sleep by turns by using the region blocks as units; and enabling all wireless nodes in the sections to communicate with a control center for safe operation of trains through the convergent nodes in the sections. In the invention, the sectioned node arranging method is used for determining the optimal arranging distance between every two wireless nodes in the region blocks. The mechanism of working and sleeping by turns is adopted by the wireless nodes to effectively prolong the life cycle of the network and ensure the traveling safety of trains.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, in particular to a topology control method for wireless sensor networks used in railway traffic. Background technique [0002] Wireless sensor network is a brand-new development direction in the field of information science, and it is also the result of crossover between emerging disciplines and traditional disciplines. It has evolved with technological advances in areas such as sensors, wireless communications, embedded computing, distributed processing, and microelectronics. At present, the wireless sensor network has played an important role in the fields of environmental monitoring, intelligent transportation, medical monitoring, urban management, logistics management and construction. [0003] The use of wireless sensor networks in railway traffic is of great significance to the safety of train operation and the transmission of various train driving information along the railway. Fo...

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Problems solved by technology

[0005] However, if the existing wireless sensor network is copied and applied to railway traffic, that is, each wireless node is randomly installed in the section that needs speed limit, each wireless node is always in working state, and because in practical application, Only when the train is approaching the road section, it is necessary to actually use the broadcast information of the wireless node, which makes the wireless node in a state of idl

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