基于ARM7的单电源心电信号采集系统设计与实现

Design of single-supply ECG acquisition system based on ARM7

本文介绍了基于ARM7的单电源心电采集系统的设计与实现。所设计的电路结构简单,采用3.3 V单电源供电,借助嵌入式技术的ARM7进行数字滤波,简化了常见ECG信号采集电路中的硬件电路。系统采用ADI公司的高性能芯片:AD623、AD8607、ADuC7026等进行设计,并完成了实际电路,最后给出人体实际测试结果。测试结果表明,该电路稳定可靠,达到设计要求。因此,本设计对开发低功耗、低成本的小型心电记录监测仪器具有重要的应用价值。

In this paper,the design and realization of the single-supply ECG acquisition system based on ARM7 is introduced. The circuit organization designed is simple. Its power supply is 3. 3V single-supply and it proceeds digital filtering based on embedded technology ARM7. So it simplified the conventional ECG acquisition circuit. The system uses many high-performance chips such as AD623.AD8607.ADuCT026. At last,the actual circuit is achieved and the test result on the human body of the system is given. The result indicates that the circuit is stable and meets the design requirement. So the design is important to the development of low power consumption and low cost ECG recording and monitoring instrument The ECG acquisition system is in use. The test results show the design of the EGG acquisition circuit is correct.