The Design Of Physiology Signal Collect System Base On USB2.0 Protocol

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 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 medical physiology signal collect system according to USB2.0 protocol. This plane of medical physiology signal collection is successful and it may be a basic of advance digital medical equipment in the future.The thesis have given the introduction of the essentials to examination technique and related medical equipments of the human body physiology information, detailed discuss the USB2.0 interface, realized the high-speed transmit data and realized a control core of 89C52 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 some software program and parts of procedures codes. This design has come to the pre-arranged target; the velocity of collection came to a 2M/ s.If the physiology's signal collects system combine other type sensors, we can collect more physiology signal to analyze, it can be used for the experiment teaching, also can be used as a tool of development of medical equipments.