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Tracking method of multiple equipment-free object by wireless network on basis of dynamic clustering algorithm

A device-free, wireless network technology, applied in location-based services, radio wave measurement systems, measurement devices, etc., can solve the problem of inability to distinguish multiple non-equipment objects, and achieve strong scalability, low cost, and tracking accuracy. high effect

Inactive Publication Date: 2010-11-03
GUANGZHOU HKUST FOK YING TUNG RES INST
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Problems solved by technology

Traditional approaches fail to distinguish between multiple unequipped objects

Method used

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  • Tracking method of multiple equipment-free object by wireless network on basis of dynamic clustering algorithm
  • Tracking method of multiple equipment-free object by wireless network on basis of dynamic clustering algorithm
  • Tracking method of multiple equipment-free object by wireless network on basis of dynamic clustering algorithm

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Embodiment Construction

[0033] The basic idea of ​​the invention is as figure 1 As shown, some wireless nodes communicating with each other are arranged on the indoor ceiling. Each node not only transmits signals as a radio frequency transmitter, but also receives signals as a radio frequency receiver. When there is no moving object, the communication between them Signal strength is stable. When the non-device object moves around, it will cause the signal strength between some wireless nodes to change, and the invention uses the change of the signal strength between these different wireless nodes to track the position of the non-device object.

[0034] The invention adopts a single device-free object tracking method based on an optimal coverage algorithm in a wireless network. It is divided into two main steps. The first step is the modeling step. The purpose of this step is to model only a pair of wireless nodes communicating with each other, and to obtain the relationship between the position of d...

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Abstract

The invention relates to a method for simultaneously tracking multiple equipment-free objects on the basis of a dynamic clustering algorithm by the wireless network technology. A plurality of wireless sensor nodes mutually communicating are arranged on an indoor ceiling, and each node serves as a wireless radio frequency emitter and can serve as the wireless radio frequency receiver simultaneously; when the object is not moved, signal intensity received between nodes is stable, otherwise, dynamic clustering is carried out according to different influences of signal intensity of multiple equipment-free objects on different nodes. A corresponding cluster is generated when having influence, and the node with the highest residual energy in the cluster is chosen as a cluster head. The cluster head of each cluster collects the vibration situation of signal intensity of each node and calculates the object position in the cluster by a probability coverage algorithm.

Description

technical field [0001] The invention relates to a method for realizing tracking of multiple non-device objects by using dynamic clustering technology based on wireless network technology. The invention solves the difficult problem that multiple non-equipment objects cannot be tracked in the traditional wireless network field, and is a low-cost and high-efficiency tracking method for multiple non-equipment objects. The invention belongs to the field of object location tracking and wireless communication. Background technique [0002] Multi-object tracking technology has always been a research hotspot, and has many practical application scenarios, such as vehicle tracking, battlefield detection, animal habitat behavior monitoring, and patient detection in hospitals, etc. GPS is a highly accurate tracking technology, but it can only be used outdoors, where satellite signals are blocked. Locating indoor moving objects is more complicated. Laser positioning technology is famou...

Claims

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Application Information

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IPC IPC(8): H04W4/02G01S5/02
Inventor 张滇倪明选
Owner GUANGZHOU HKUST FOK YING TUNG RES INST
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