Human motion tracking system based on Zigbee/ institute of electrical and electronic engineers (IEEE) 802.15.4

Abstract

Provided is a human motion tracking system based on Zigbee/ institute of electrical and electronic engineers (IEEE) 802.15.4. A wireless wearable sensing network is covered on nine independent limbs of a person, and a wireless wearable sensing node is adhered onto each independent limb for monitoring free motion of the limb in the three-dimensional space. In each wireless wearable sensing node, an inertia measuring unit which comprises a three-axis acceleration sensor, a three-axis gyroscope and a three-axis magnetic force sensor is used for calculating the position of the independent limb in the three-dimensional space through an on-line data infusion calculation method. In the wearable wireless sensing network, real-time location data can be transmitted to a substation through the low-consumption wireless communication technology Zigbee/IEEE 802.15.4. The substation forwards the obtained wireless wearable sensing network to a computer in real time. Human motion can be reconstructed in the computer according to a forward motion model. The reconstructed human motion can be transmitted to a remote user through the internet for tememedicine. The human motion tracking system totally eliminates ligature between sensor nodes, do not need a light source for assisting and facilitates system expansion and application development by means of the low-consumption wireless operation system.

Description

technical field [0001] The invention relates to a human body motion tracking system based on ZigBee / IEEE 802.15.4, in particular to a motion tracking method and system using a wearable wireless sensor network to detect human body motion, belonging to the field of human-computer interaction. Background technique [0002] With the wide application of computer graphics technology, motion tracking technology has become a research hotspot. Human motion tracking technology is an important research prospect in the fields of medical treatment and rehabilitation. Through remote doctors, patients can get diagnosis and help from doctors without going out. In addition, this technology can also be applied to film and television production, athlete training, smart media, and control of robot operations in dangerous environments. [0003] At present, the technologies for realizing human motion tracking mainly include mechanical tracking, electromagnetic tracking, video tracking, optical t...

AI Technical Summary

Problems solved by technology

Wired communication needs to connect all nodes to the central control unit CCU (central control unit), which is very inflexible, while wireless communication is more flexible, but it increases the complexity of communication technology

In the existing technology, there are many methods for tracking human motion by using inertial measurement units, but the function of the node is limited to collecting motion data, and tasks such as task scheduling and process scheduling all depend on the base station

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