ABSTRACT
The aim of this study is to design a low cost and portable measuring device of center of pressure (COP) for data collecting and analysis, which is called center of pressure and complexity monitoring system (CPCMS). Firstly, we presented details about design concepts, functions of measurement component, and signal analysis of multi-scale entropy (MSE) algorithm. In order to verify the reproducibility of the measurement system, we conducted a series of experiments, including static and dynamic tests. Secondly, in order to prove that our system can estimate the different sizes of the different sways, we designed four sway tests to produce different sway displacement. We use traditional and MSE analysis methods to analyze the COP signal received by CPCMS and compare with the commercial product of Advanced Mechanical Technology Incorporation (AMTI) system. The results indicated that CPCMS can receive the same results with the AMTI system in comparison with these four sway tests under the statistical analysis. In conclusion, a low cost and portable system (i.e., CPCMS) for measuring and analysis COP signal has been designed in this paper which is allowed us to quantify the dynamic property of human’s balance in order to assess the risk of falling among elderly people via large population size more handy and conveniently in the near future.
