Development of the Smart Toilet Equipment with Measurements of Physiological Parameters

People´s daily life is changing with the rapid development of industrial technology and enhancing quality of life. The products of healthcare industry are unconsciously integrated into our living environment. The growing interest in health monitoring during daily life has lead to many researchers on non-conscious biological signal measurements. In this paper, we propose the smart toilet equipment which can measure several physiological parameters including ECG, body weight and body fat ratio and also provide health management function. The electrodes mounted on the smart toilet seat are used for measuring ECG and bioelectrical impedance. The other is the hand-held electrode device for obtaining total boy bioelectrical impedance. The measured bioelectrical impedance and standard body fat ratio from 86 volunteers are obtained to establish estimate formula between of body fat and bioelectrical impedance and the square of correlation coefficient is 0.8682. We have developed an activity shaft device without the influence of the lateral force. The resulting average weight of the ratio of maximum and minimum in different load location was is 1.007. These physiological signals are transmitted to the remote server via blue-tooth wireless interface. Whether the local side or the remote server end, the system also provides the friendly graphic user interface.