Based On The Design And Realization Of The Odd Power Of The Arm Core Ecg Monitor

As the life quality become higher and higher, the people are no longer satisfied with curing illness. Preventing illness and keeping health are brought forward in this world. Cardiopathy is the second one that threatens human's life. ECG technology is the must one in cardiopathy diagnoses and heart health care. It's a trend that the ECG detector turns to domesticable, small and network connectible. So it's needs a cheaper and more convenient ECG equipment.In this paper, the method of single supply ECG system and double supply ECG system are present. The content includes hardware circuit realization, algorithm design, software realization and communication with PC.In the hardware circuit part, the differences between single supply and double supply systems are present. This paper gives out two versions of the design schematic, after circuit function simulate by OrCAD. Draw schematic by PowerLogic and layout by PowerPCB. Finally, the suitable circuit is settled. After large numbers of emulation and prototype board experiments, the second version adds a 50Hz notch filter and a two-stage low pass filter.Algorithm designing is base on traditional method and make amelioration. In this design, it adopts two variable thresholds, adds a moving window and R-R interval threshold. It detects QRS complexes exactly whatever big signal, small signal, peak value change abruptly even anomalous ECG by using the MIT/BIH database. The heart of rhythm is also exact. The application of ADuC7020, the new part, which has ARM7TDMI core, is the main part in the software realization. Also, the algorithm realization is the important one. In PC part, by using LabVIEW to execute a virtual ECG instrument. After system debug, currently, the PC can send command and receive data through serial interface, it also can display ECG wave and heart of rhythm.Currently the two versions of board are achieved.