A topology control method for wireless sensor network used in railway traffic

A wireless sensor network and topology control technology, applied in the field of wireless sensor networks, can solve the problems of not considering the service life of wireless nodes and resource optimization, the problem of not being able to release the driving information in time, and affecting the safety of trains, so as to save energy. Consumption, prolonging life span, reducing the effect of security incidents

Inactive Publication Date: 2012-02-08
SOUTH CHINA UNIV OF TECH
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  • Abstract
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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 idle resources in most cases, without considering the service life of different wireless nodes at different locations and The problem of resource optimization makes it often necessary to replace wireless nodes that are faulty or run out of power, resulting in train running information such as train speed limit information not being released in time, and the lifetime of the network is greatly limited, which seriously affects the safety of train driving

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  • A topology control method for wireless sensor network used in railway traffic
  • A topology control method for wireless sensor network used in railway traffic
  • A topology control method for wireless sensor network used in railway traffic

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0037] Such as figure 1 As shown, a topology control method for wireless sensor network used in railway traffic,

[0038] Firstly, the area along the railway line that needs to transmit train running information is divided into several sections, and a converging node is set up at the midpoint of each section.

[0039] The convergence node has two communication modes: one is a short-distance wireless communication mode, which is used to communicate with wireless nodes in the section; the other is a long-distance wireless communication or wired communication mode, which is used to connect to external The internet. All wireless nodes in this section transmit information to the sink node, and the sink node is connected to the external network to exchange information with the...

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Abstract

The invention discloses a method for realizing a wireless sensor network for railway traffic. First, the area along the railway that needs to transmit train running information is divided into several sections, and a converging node is set up in each section; The section is further divided into M area blocks whose length is 1; calculate the number ni of wireless nodes that each area block needs to arrange, and then calculate the distance di of wireless nodes in each area block, di=1 / ni; Arrange wireless nodes evenly in the middle of each area block according to the distance di, and assign ID numbers to each wireless node in sequence; wireless nodes perform work and sleep rotation in units of area blocks; all wireless nodes in the section pass through the convergence node in the section Communicate with the train safety operation control center. The present invention adopts the method of distributing points in blocks to determine the optimal deployment distance of the wireless nodes in the area blocks. The wireless nodes adopt the work-sleep rotation mechanism, which can effectively improve the lifetime of the network and ensure the 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61L27/00H04W84/18
Inventor 谢胜利高如超刘震宇
Owner SOUTH CHINA UNIV OF TECH
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