Study On Detection Method Of Cardruvaular Function Based On Information Of ECG And Bioelectrical Impedance

The bioelectrical impedance measuring technology (BIMT) is a non-invasive detecting technique which extracts biomedical information relating to human body's physiological status, through the measurement of electrical characters in biological tissue and organ. Due to the feature of low-lost, safety, nontoxic and harmless, it has been paid special attention by the researchers in clinical medicine areas.Applying the BIMT technique to the detection of cardiovascular state, this paper presents the method for detection of cardiovascular function, based on the ECG and impedance measurement. It contributes to cardiovascular disease detection and daily self-diagnosis. By doing comprehensive research on information of ECG and impedance tested the state of human heart and cardiovascular system, because of reducing the costs and easing the patients' pain and burden, it has broad application prospects.By use of information of ECG and impedance for comprehensive evaluation of cardiovascular function, after analyzing the ECG and impedance measurement of the basic principles, the two types of signal measurement platform is designed. Then the preliminary experiment research on same person for different locations and different person on the same location is finished. By experiment, the feasibility of the signal measurement and data acquisition circuit is tested well. It shows that changes in impedance for cardiovascular function of different person is a good distinction. So the program is feasible. In order to facilitate future experimental studies and improve the integration of system, the USB2.0 data acquisition system and the corresponding of firmware and driver are developed.