| The computer technique is being developed with fast speed; the computer application in medical realm is more and more studied by a lot of colleges and factory. The new medical monitor equipments are very important for the people. The high-speed standard bus (USB2.0 technique) is already very mature, it is a standard configuration to the most PC. Applying the USB2.0 technique, we can develop many new type analysis equipments; it is plug-and-play, handles, small scaled and very easy used. Now a lot of medical equipments can be concentrating used only in the big hospital, if more and more medical instrument can be used widely in the small hospital, even come to family, it will bring the very important meaning for increasing the people's health level.First, in this task, we design a digital electrocardiograph based on USB2.0 communication agreement. This plan of digital electrocardiograph is high-speed and convenient on collect of the medical signals. It may be a basic of advance digital medical equipment in the future.The thesis have given the explain of measure technique on 12-lead electrocardiogram and related medical equipments of the human body physiology information, discussed the USB2.0 interface detailedly, realized the high-speed communication and realized a control core of AT89S52 CPU about the single and the equipment, AD9842 high-speed A/D conversion achieved the collection and conversion of medical physiology signal in this system, we give the design flow.If the collecting part and communication part of this digital electrocardiograph cooperate with other type sensors, such as blood pressure sensor and brain wave sensor, we can realize the digital medical treatment. |
