The Study Of ECG Collecting System Based On Microcontroller

The author is engaged in the studying and manufacturing of portable ECG monitor and its system based on AT89C52 low power MCU. According to the characteristic of human's ECG signal, an excellent ECG signal sampling system was designed. Further more, The monitor uses low power 8-bits, single chip microcomputer AT89C52 and bulk Flash memory to record, analyse, and process the ECG signal at real time. The monitor uses LCD to show the ECG waves detected. Cooperated with buttons, it provides amicable Chinese menu and makes operation simple and convenient, and the ECG data can be transmitted to Personal Computer by serial RS232 interface. This monitor can work stably and reliably for a long time, and with some excellencies such as mini volume, bulk memory, low power, etc. It is convenient to be taken with and used.By use of the assemble language in programming, the author also makes an ECG auto-analysis software module. This software is convenient to be used as well as has friendly interface. With the excellent ECG signal sampling system, the LCD can show the ECG waves detected at real time.At last, the author indicates some shortages of the ECG system, and those can be improved in the future.