Wireless sensor network data fusion method of fusing time delay and survival time evenly

A wireless sensor network and time-to-live technology, applied in network topology, wireless communication, wireless communication services, etc., can solve problems such as data fusion delays are not considered

Inactive Publication Date: 2016-08-24
ZHEJIANG POLICE COLLEGE
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Problems solved by technology

However, these research results did not consider the problem of data fusion delay
In fact, in WSNs with limited communication bandwidth resources, there is inevitably a delay in the process of transmitting sensing information from sensing nodes to fusion nodes, so how to meet the fusion delay requirements of different sensing information is a practical problem.

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  • Wireless sensor network data fusion method of fusing time delay and survival time evenly
  • Wireless sensor network data fusion method of fusing time delay and survival time evenly
  • Wireless sensor network data fusion method of fusing time delay and survival time evenly

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0043] refer to figure 1 , a wireless sensor network data fusion method that balances the fusion delay and lifetime. First, considering the practical factors such as the unpredictability of event occurrence in WSNs applications, the data fusion problem is established as the goal of minimizing the time-average network energy consumption. stochastic optimization model. The whole WSNs are divided into different clusters, each cluster has N sensor nodes (hereinafter referred to as nodes) and 1 node called cluster head (hereinafter referred to as cluster head). The initial energy of the node i is The energy of the cluster head is not limited, and the cluster head is responsible for data fusion in the cluster. The positions of all th...

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Abstract

A wireless sensor network data fusion method of fusing time delay and survival time evenly is characterized by firstly considering an actual factor that the event occurrence has the unpredictability in the wireless sensor network application, establishing a data fusion problem into a random optimization model taking the time-averaged network energy consumption minimization as the objective, then designing a strategy of real-timely selecting the nodes participating in the data fusion based on a Lyapunov optimization method, and establishing a trade-off relation between the network energy consumption and the maximum fusion time delay of various perceptual information, thereby achieving the purpose of fusing the time delay and the survival time evenly. The wireless sensor network data fusion method of fusing the time delay and the survival time evenly of the present invention is reasonable in model, is supported by the mathematical theory, can satisfy the different fusion time delay requirements of the different types of perceptual information, and can be applied to a wireless sensor network directly.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a wireless sensor network data fusion method that balances fusion delay and survival time. Background technique [0002] Wireless sensor networks (Wireless Sensor Networks, WSNs) are composed of a large number of cheap micro-sensor nodes deployed in the monitoring area, and form a multi-hop self-organizing network system through wireless communication. Has a wide range of applications. With the deepening of WSNs application research, more and more problems are exposed. Among them, one of the most obvious problems is that the massive sensing data generated by the large-scale WSNs system requires high network processing capabilities, which contradicts the essential characteristics of WSNs nodes such as energy, communication distance, and bandwidth constraints. In order to overcome this contradiction, scholars have introduced the data fusion technology that appear...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/00H04W40/10H04W84/18
CPCH04W4/38H04W40/10H04W84/18Y02D30/70
Inventor 董齐芬
Owner ZHEJIANG POLICE COLLEGE
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