关键词: 单电源, 心电图机, 生物电放大电路

Abstract:

To implement the simple and portable characteristic for electrocardiogram machine,this design adopts the dry battery, which can provide not more than 3 V. The whole circuit is composed of amplifier AD623,TLV2254 and some resistance or capacitance. High precision enlarged for faint electrocardiogram signal,the fast elimination for polarized voltage and other functions are achieved by this circuit. It ensures the accuracy and steady of electrocardiogram signal,providing good situation for the flowing data sampling and analyzing for electrocardiograph(ECG) machine.In the same time, since using single power supply, it make power supply mode of electrocardiogram machine more simplify, make circuit more simple, promote the electrocardiogram machine further to portable direction.