Android-Based System Design Of Ecg Acquisiton And Display

The cardiovascular disease can lead to high possibility of deformity and death. Andit is difficult to detect due to its expresses outburst. At present, ECG signal is theimportant data source for detecting cardiovascular diseases. Generally, ECG is acquiredby conventional ECG machine in large locations such as hospital. But conventionalECG machines have obvious flaws, such as high price, large, and not portable, whichincreases the difficulty of acquiring and analyzing ECG signal. Although, there aresome portable ECG machines in the market, they are also expensive, with poorexpandability in function, and can not provide targeted analysis.In order to make ECG machine more potable and more functional, and reduce itsprice as well, we design a system based on Android operating system for data analyzingcenter, considering to the developing tendency of smart phone. Such design can makethe processing of data acquiring and analyzing separated, and reduce the price andvolume of the device. Meanwhile, the openness of Android operating system alsoprovides much more elasticity and scalability in software developing.The system designed in this subject uses MSP430F1611to acquire and forwarddata first. And transfer the data to the smart phone for analyzing through Bluetooth then.The way of transferring data through wireless Bluetooth can avoid the complicatedwiring, and increase the communication distance as well. And before analyzing, weshould remove the interferences such as baseline drift,50Hz frequency interference andhuman myoelectricity interference from ECG data through the filtering process in thesmart phone. After the filtering step, we can analyze the ECG data and diagnose someregularly diseases by extracting QRS information from the data and computing theperiod of RR. QRS information is extracted through calculus of difference, which is notsensitive of baseline drift, so that the result can be more accurate. Meanwhile, the ECGdata can be displayed on the screen of the smart phone and saved into the storagedevices. The saved data can be reanalyzed for more diseases afterward, and even can beshared or communicated through internet so as to realize remote diagnosis andmonitoring. After design, the system is tested to be easy in operating and come out to beeffectual. And it is easy to expand functions as well. We can even make the datatransferred and analyzed through internet. Such design is positively benefit to theprevention and cure of cardiovascular disease.