Abstract
This paper presents a wearable wireless system for measuring human body activities, consisting of small inertial sensor nodes and the main hub for data transmission via Bluetooth for further analysis. Unlike optical and ultrasonic technologies, the proposed solution has no movement restrictions, such as the requirement to stay in the line of sight, and it provides information on the dynamics of the human body’s poses regardless of its location. The problem of the correct placement of sensors on the body is considered, a simplified architecture of the wearable clothing is described, an experimental set-up is developed and tests are performed. The system has been tested by performing several physical exercises and comparing the performance with the commercially available BTS Bioengineering SMART DX motion capture system. The results show that our solution is more suitable for complex exercises as the system based on digital cameras tends to lose some markers. The proposed wearable sensor clothing can be used as a multi-purpose data acquisition device for application-specific data analysis, thus providing an automated tool for scientists and doctors to measure patient’s body movements.
Highlights
The development of body movement measuring systems is essential in telemedicine and the provision of remote medical services, which are topical issues today
Since the human body is a unified whole, all movements naturally involve all areas of the body
By examining the various movements and evaluating which part of the body is involved in these movements, the following main areas of focus were selected: neck, spine, shoulder, elbow, hip, knee, ankle and wrist [11]
Summary
The development of body movement measuring systems is essential in telemedicine and the provision of remote medical services, which are topical issues today. With 3-dimensional (3D) body motion capture, it is possible to draw more complete consultations in areas such as physiotherapy, rehabilitation, sports and elsewhere. There are various kinds of motion-sensing technologies. They can consist of optical markers (active or passive), placed on the human body. They use visual-sensing cameras providing high accuracy, but the downside for these kinds of sensors is their limited freedom of movement, due to the use of stationary cameras and occlusion [1]
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