Acquisition And Analysis System Of ECG Based On DSP

ECG (electrocardiograph) signal is a synthetic reflection of the heart electricity activation on body surface, which is the typical example of bioelectrical signals. Since ECG signal shows the work status of the heart from different parts, The ECG can provide evidence to support a diagnosis, and therefore management, of abnormal cardiac rhythms.ECG signal can be detected by electrodes attached to the surface of the body through special 'lead', which are joined to the ECG recorder by wires. ECG signal detection and analysis is a pivotal tache in the course of heart disease's clinic diagnosis, and it will directly affect the result of diagnosis and the purpose of therapy. With the great improvement of people'live, HHCE(Home Health Care Engineering)is a tendency at present time, so the detection of ECG signal that can be accomplished at home not only in hospital is imperative under the situation. Furthermore based on the the support of integrate circuit technology, it is easier to get ECG signal defection and analysis instrument portable and pint-size. Convenience for family use and operating easily is the significance of the subject.ECG signal detection and Analysis System based on Digital Signal Processor (DSP) includes the hardware of signal acquisition and related software of control and analysis. The former acquisites the ECG signal and do some pretreatment and the latter controls the signal acquisition process and deal with the collected ECG signal.The ECG signal is the week signal in the strong noise made by kinds of noises and interferences that make the acquisition more difficult. The ECG Signal Detection and Analysis System is designed according to the specialty of the ECG signal, including two parts of hardware: signal detection circuit and analysis circuit. The signal detection circuit is compsed of the front amplifier circuit, Driven-Right-Leg Circuit, band pass filter and 50 Hz band elimination filter, the main amplifier circuit and power-lift circuit etc. which has completed the ECG signal acquisition and pre-process.The signal process circuit makes up of power management circuit, TMS320VC5509 processor system, storage expand circuit, Serial communication circuit and LCD interface circuit, which make the A/D changes, digital processing and...