C8051F320 Based Holter Design

Holter records human's ECG while he is spending his daily life, aiming at early detection of the hidden signs of heart disorder and prompt first aid to heart diseases. This thesis attempts to use the up-to-date technology in electronics and computer science, to develop a compact, portable Holter with functions such as realtime ECG recording, display, automatic diagnosis and treatment, to overcome the limitations of present Holter products.This thesis describes a design of portable ECG monitor that is based on the microcontroller C8051F320 characterized of high performance and flexible interface capability. With the understanding of the principles and diagnostic technique of electrocardiograph, the input channel is constructed with preamplifier, filters and the ADC of the microcontroller. The acquired data of electrocardiograph are compressed to save memory space before being stored into a FLASH memory AT45DB321 with SPI interface. The USB interface is designed to facilitate the data transfer from the Holter to computers for archive and advanced analysis. The design may be developed to be a prototype of low-power, compact and long-term recording Holter.