Distributed image compression method for wireless multimedia sensor network based on solar energy harvesting

A solar energy collection and image compression technology, applied in the field of computer networks, can solve the problems of limited energy and the inability of the network to maintain long-term uninterrupted work.

Active Publication Date: 2020-10-09
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] However, if the nodes in the network are powered by limited batteries, the energy is limited, which means that the network cannot maintain long-term uninterrupted work

Method used

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  • Distributed image compression method for wireless multimedia sensor network based on solar energy harvesting
  • Distributed image compression method for wireless multimedia sensor network based on solar energy harvesting
  • Distributed image compression method for wireless multimedia sensor network based on solar energy harvesting

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Embodiment Construction

[0070] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0071] Distributed image compression mechanism for wireless multimedia sensor network based on solar energy collection, refer to figure 1 , mainly includes three processes: preliminary preparation, topology establishment, and network work stage.

[0072] The work done in the preparatory stage mainly includes: energy supply model determination, solar panel area initialization, node initial energy setting, and node initial working mode setting.

[0073] The energy supply model is determined, specifically, it is defined that for a solar panel with an effective area of ​​s, its actual power P(s) is:

[0074] P(s)=P s ×s×η

[0075] Among them, P s is the actual solar radiation intensity, s is the effective area of ​​the solar panel receiving light, and η is the rated conversion efficiency of solar energy;

[0076] According to the fo...

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Abstract

The distributed image compression mechanism of wireless multimedia sensor network based on solar energy collection, in view of the limited energy supply of the sensor, equip the node with solar panels, set the initial energy and initial working mode of the node, and then carry out the camera node-common node cluster and ordinary node cluster Clustering. The establishment of the camera node-common node cluster enables the camera node to distribute the picture to the ordinary nodes in its cluster for compression after collecting the picture; the establishment of the ordinary node cluster enables the ordinary node to send the picture to the corresponding after compressing the picture. cluster head. Then proceed to steady state phase. In the steady state stage, the camera node performs image collection, the common node performs image compression, and the cluster head sends the image to the base station. At the same time, considering the dynamic adjustment of the nodes working mode, the node will adjust its own working mode according to its own state and the state of the next node in the work chain, so that the network can balance energy consumption and cope with the impact of extreme weather on solar energy collection.

Description

technical field [0001] The invention belongs to the field of computer networks and relates to a distributed image compression mechanism of a wireless multimedia sensor network based on solar energy collection. Background technique [0002] Wireless Multimedia Sensor Networks (WMSN, Wireless Multimedia Sensor Networks) is a new type of sensor network that introduces video, audio, image and other multimedia information perception functions on the basis of traditional WSN. WMSN perceives a variety of media information in the surrounding environment through multimedia sensor nodes. These information can be transmitted to the sink node through single-hop and multi-hop relays. The results are sent to the network manager, enabling effective environmental monitoring. WMSN integrates and expands the application occasions of traditional WSN, and is widely used in various occasions such as security monitoring, intelligent transportation, smart home, and environmental monitoring. [0...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/715H04L12/721H04L12/733H04N19/42H04W40/10H04L45/122
Inventor 张松涛韩崇张彪孙力娟郭剑肖甫徐鹤周剑
Owner NANJING UNIV OF POSTS & TELECOMM
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