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Rough-set-based data fusion method for wireless multimedia sensor network

A technology of multimedia sensor and fusion method, which is applied in the field of effectively reducing energy consumption, can solve problems such as inapplicable wireless multimedia sensor networks, and achieve the effect of saving node energy

Active Publication Date: 2013-04-17
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] The above fusion schemes are not suitable for wireless multimedia sensor networks that transmit multimedia information such as audio and video.

Method used

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  • Rough-set-based data fusion method for wireless multimedia sensor network
  • Rough-set-based data fusion method for wireless multimedia sensor network
  • Rough-set-based data fusion method for wireless multimedia sensor network

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Embodiment Construction

[0053] figure 1 Shown are 100 numbered N i The multimedia nodes of (i∈(1,100)) are randomly and evenly distributed in the plane area of ​​100m×100m, and the sink nodes are recorded as N 0 , at a fixed position outside the planar region. figure 2 Shown is the situation after all nodes select cluster heads according to certain rules, and the specific cluster head election method is shown below. image 3 Shown is the situation after constructing the network topology structure of cluster tree.

[0054] The energy consumption model that the inventive method adopts is as Figure 4 shown. In the energy consumption model, the energy consumption of the transmitting end is composed of two parts: the energy consumption of the transmitting electronic components and the energy consumption of the transmitting amplifier, and the energy consumption of the receiving end is generated by the receiving electronic components. The attenuation of signal energy in radio transmission is related ...

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Abstract

The invention discloses a rough-set-based data fusion method for a wireless multimedia sensor network. The wireless multimedia sensor network can be flexibly deployed in an area of interest of a user to sense richer multimedia information such as audios and videos. However, power is supplied to nodes of the wireless multimedia sensor network by batteries, and the hardware power consumption of the nodes for acquiring and transmitting the multimedia information is far higher than that of the conventional nodes, so that how to save the energy of the nodes to maximally prolong the life cycle of the network becomes one of main difficulties and challenges for the design and the implementation of the wireless multimedia sensor network. For such a problem, the invention provides a rough-set-based data fusion scheme for the wireless multimedia sensor network. According to the scheme, an optimal network topology structure is constructed, cluster head nodes are selected according to certain rules, and a data fusion tree is constructed among the cluster head nodes, so that acquired information can be forwarded along an optimal fusion path to reduce the energy consumption of the nodes in data transmission; and redundancy is eliminated by using an indiscernibility relation of a rough set theory to obtain reduced information, the reduced information is more accurate, and the data volume of the reduced information is greatly reduced compared with a raw data volume, so that the energy of the nodes is further saved, and the life cycle of the whole network is prolonged.

Description

technical field [0001] The present invention proposes a rough set-based wireless multimedia sensor network data fusion method, which is mainly used to solve the problems of limited node battery energy, computing power, storage capacity and communication bandwidth in the wireless multimedia sensor network, and is effective for reducing energy consumption , prolonging the life cycle of the whole wireless multimedia sensor network plays a very important role. The invention belongs to the technical field of wireless multimedia sensor network. Background technique [0002] In wireless multimedia sensor networks, on the one hand, due to the huge amount of image, audio, video and other information data, the complete storage and transmission of these data will bring more communication burden and energy consumption to nodes and networks; on the other hand, from From the user's point of view, what users care about is not the data of a specific node, but the overall monitoring of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/10H04W52/02H04W84/18
CPCY02D30/70
Inventor 王汝传吴蓉沙超黄海平孙力娟钱艺升陈九天封娟
Owner NANJING UNIV OF POSTS & TELECOMM
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