The Design Of Acquisition And Processing Of Biomedical Signal Based On LabVIEW

In this paper , it is analyzed and designed how to condition , sample and process biologic signal, such as electrocardiosignal, respiration signal. This system consists of hardware and software .The main function of the hardware is to amplify and filter signals . In this system , AD620 is the core device of the amplification ; 8051 is used as microprocessor ; TLC2543 is used as the AD converter which is a 12-bit-resolution chip with serial peripheral interface ; and the communication between the microprocessor and the computer is working by serial interface .The system's software is programmed by LabVIEW which has graphic programming environment . It analyzed the spectrum character of the signals . Specially , electrocardiosignal can be identified ,the system can compute the values of the character parameters of eleclrocardiosignal and give the diagnostic result correspondingly . The information including the data of the signals , the values of the character parameters and the diagnostic result can save into the relative database . In addition , this system has also functions of display , playback and print ,and can call remote panel.Because it is based on computer , the system's function is flexibly defined and meets users' requirement easily . And the system have good man-machine interface, and easy operation .