Implementing method for video sensor network covering and enhancing movement path of movable objective

Abstract

The invention relates to a fulfilling method for enhancing the ability of a video sensor network to cover the motion tracks of mobile targets, which comprises two operation steps, namely, a preparing stage and an adjusting stage. The invention is characterized in that: proceeding from the directivity perceiving feature of video sensor node and based on the hypothesis that the initial positions of the video sensor nodes are invariably fixed, the invention revolutionarily puts forth a simple handling approach, by which the motion tracks of the continuously movable targets are discretized into a plurality of motion track points; and then a concept of center of mass is introduced, and the issue of strengthening the coverage is transformed into another issue, which centers on the calculation of the virtual resultant forces between the centers of mass and the motion track points as well as among centers of mass. Moreover, the sensing directions of the video sensor nodes, which are likely to detect the movable targets across the entire network, are adjusted to enable the nodes to participate into the monitoring over the mobile targets. The invention has the advantages of improving the probability of coverage when the mobile targets cross the video sensor network along any tracks, enhancing the tracking ability of the video sensor network over the mobile targets, and ensuring the integrity and reliability of the monitoring data of the mobile targets.

Description

technical field [0001] The invention relates to a method for realizing coverage enhancement of a moving target motion track by a video sensor network, and belongs to the technical field of self-organizing network systems. Background technique [0002] With the rapid development and maturity of embedded computing technology, sensor technology and wireless communication technology, a kind of miniature video sensor with perception, calculation and communication capabilities has emerged. widely concerned by domestic and foreign scholars. The video sensor network with the main goals of environment perception, target monitoring, information acquisition and effective transmission needs to pay special attention to the coverage ability of the monitoring area and target, which leads to the coverage control problem of the video sensor network. As a basic problem in video sensor networks, coverage describes the network's perception of the physical world and reflects the "perceptual qua...

AI Technical Summary

Problems solved by technology

However, considering the deployment cost of the network, it is unrealistic to make all the deployed video sensor nodes mobile capable in practical applications.

In addition, the movement of the sensor node position can only occur within a relatively short range, not to mention that the movement can easily cause the failure of some sensor nodes, which in turn will cause changes in the topology of the entire sensor network, which will undoubtedly increase network maintenance costs

[0008] In short, judging from the patent materials currently held by the applicant, no related reports and materials related to the implementation method of the video sensor network to enhance the coverage of the moving target's trajectory have not been found so far.

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