System and method for tracking moving target based on wireless sensor network

A wireless sensor and moving target technology, applied in the field of moving target tracking methods and systems, can solve the problems that the positioning tracking system cannot meet the application requirements, the target information is unknown, etc., so as to shorten the time-to-market, save energy resources and communication resources, and speed up the opening up. effect of speed

Inactive Publication Date: 2009-09-16
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

These systems generally require the target to be equipped with sensor nodes for positioning and tracking, but in the actual target positioning and tracking, the target information is mostly unknown, so in the actual target tracking application, these positioning and tracking systems cannot meet the actual application requirements

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  • System and method for tracking moving target based on wireless sensor network
  • System and method for tracking moving target based on wireless sensor network
  • System and method for tracking moving target based on wireless sensor network

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, a wireless sensor network-based mobile object tracking method of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only for explaining the present invention, and are not intended to limit the present invention.

[0044] In the process of moving target tracking, as the target moves, the current task node is responsible for waking up and passing the existing tracking information to the next task node. When the target enters the sensor area, the node closest to the target obtains the initial estimated value of the target position, and calculates that the tracking of the task node at the next moment can ensure the accuracy of the detection data, so that the communication cost to the task node at the next moment is within the specifi...

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Abstract

The invention provides a system and a method for tracking a moving target based on a wireless sensor network. The system comprises a sink node, a gateway, a server and a plurality of sensor node devices; and the tracking method comprises the following steps: evenly arranging the sensor node devices in a target monitoring area; starting the sensor node devices and server software, and making preparation for receiving data of the wireless sensor network; when a passive infrared sensor detects a target, starting ultrasonic ranging and operating Extended Kalman Filtering Algorithm to obtain a target position coordinate; adopting a principle of a minimum covariance matrix track to select a task node of the next time; and reading initial data from the sink node through the gateway, drawing a data curve and a target track, saving the data, and transmitting a server instruction to a node of a specified ID through the gateway by the server. The system and the method can accurately detect and report the position of the moving target in a monitoring area, adopt an effective sensor awakening mechanism and greatly save energy consumption of the nodes.

Description

technical field [0001] The invention relates to the field of wireless communication and computer, in particular to a method and system for tracking a moving target based on a wireless sensor network. Background technique [0002] Wireless sensor networks (WSNs: wireless sensor networks) are considered to be one of the most important emerging technologies in the 21st century, and are currently a research hotspot in the field of communication and computer. Among the various applications of WSNs, target tracking is an important application field of WSNs. Active target tracking has broad application prospects in both military and civilian applications, and it is also a technically challenging subject. The current target tracking algorithm is mainly aimed at single target tracking in different environments. How to efficiently fuse effective information at a lower energy cost, increase measurement accuracy and prolong network lifetime has become a hot spot in the current study of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W84/18
CPCY02B60/50Y02D30/70
Inventor 胥布工危阜胜高焕丽陈冠升曾明黎善斌
Owner SOUTH CHINA UNIV OF TECH
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