The Design And Implementation Of Wireless Medical Data Acquisition System

With a Growing emphasis on health in today's society, a large number of portable medical equipment also entered into the average family. Such as blood pressure, blood glucose meters, heart rate detector. But for many ordinary users, some of data changes up and down.due to the lack of professional knowledge, it is difficult to make accurate judgments.In the past, people have to measure these critical medical data at the hospital and now through the portable medical equipment, all these can be done at home. Abnormal blood pressure can be found in time to the hospital for treatment.It plays a prevention role for cerebral hemorrhage, heart failure and other diseases. This paper gives a design and implementation of a wireless data acquisition system. The system connects data acquisition modual and healthy surveillance center through wireless transmission.Data acquisition Mudoal use USB interface to communication with portable medical equipment. The paper first introduced USB bus and USB protocol standards, USB data flow model and wireless trasnsmission; then studied the Linux USB subsystem. Medical data acquisition target is a sphygmomanometer. The paper analysis the underlying Communicaiton mechanism of USB, analyzed the format and the content of the communication between host and sphygmomanometer. On this analysis basis, complete the medical data acquisition function.Wireless data transmission using a 3G network. The aqusition system are connected to 3G network, and transmit the medical data from a TCP connection; also developed a short message way to notify and transmit medical data to surveillancers.After debugging and testing, the system is proved worked well. It can be good finish the data acquisition work, transmit the medical data to healthy surveillance center.,And using short message to notifacte the surveillancers.