High-Rate And High-Accuracy 12-Lead Electrocardiograph Based On DSP

Heart is the most important organ of human and its state is crucial to everyone's health. Electrocardiograph is an important diagnostic tool for cardiac physicians to diagnose the heart. 12-lead electrocardiograph, using12-lead electrocardiogram synchronous recording technology, is now the main development direction in the design of electrocardiographs both here and overseas. With the rhythm of modern life getting faster and faster, the amount of people afflicted by all kinds of heart diseases is increasing year by year. As a result, diagnose of hospitals are bearing heavier burden of speediness, veracity and low cost. So this paper designs a high-speed 12-lead electrocardiograph to meet the needs of the powerful function,lower price, credible quality. As long as operate by pressing a simple key, the electrocardiograph will automatically print the electrocardiogram in standard form after signal measuring, processing, storing and displaying."Refined Analog Circuit And Enhanced Digital Function"is the designing idea of the system, which applies TMS320F2812 to optimize system hardware, enhance system functions and lower cost. The key idea is"software instead of hardware", such as oversampling, adaptive coherent model,synthesis of 12-lead ECG signal, auto-adjusting baseline and auto-regulating gain, that remarkably reduces the processing hardware circuit and making most usefull of the TMS320F2812's capability. The hardware combines with software through program design under the fuidance of"stratification and modularization", which fulfills all functions of real-time.The design is based on the knowledge and technology such as electrical engineering, embedded system application, digital signal processing and ECG soft technique, etc. Comparing with other 12-lead electrocardiographs, it will show remarkable promising prospect and preponderant market competition.