Design And Implementation Of BAN System Gateway

With the advance of social economy and science and technology, the degree of aging also increases.What follows is a series of serious social problems. Among these problems, how to protect the life and health of the elderly community becomes the focus of the community. The body area network (BAN) arises at the historic moment. It consists of a number of sensors placed on the body composition. The sensors can protect the health of the elderly together, it collects human sign parameters, and sends the sign parameters data to the client for their families and medical personnel monitoring.The main content of this thesis is the design and implementation of the embedded gateway system using the embedded technology. In the system, data collected by the sensors of BAN is transmitted to Internet through the embedded gateway. The process of design and implementation is divided into two aspects, including hardware and software.(1)The hardware aspect includes device selection and circuit design of microcontroller, serial interface module, Ethernet module, and some peripheral module. Serial interface module and Ethernet module are the two main modules. Among them, the function of serial interface module is receiving and storing data that sending by the serial interface of BAN. The function of Ethernet communication module is to fetch data from the storage storing data from serial interface and to send data to Ethernet through the hardware interface.(2) The software aspect is divided into four parts:the implementation of serial interface module communication, the implementation of the Ethernet communication module, the implementation of TCP/IP protocol stack and the implementation of the server. First, we implment sending and receiving data between the serial interface through defining the same data format of serial transmission. Second, Ethernet module implments the sending and receiving of Ethernet frame through hardware driver. Then, data is encapsulated and processed by using some protocols in the TCP/IP protocol stack, and is added Ethernet frame head and tail into Ethernet frame According to the demand of the system, we choose the TCP, IP, ICMP and ARP protocol, simplify and tailor them. Finally, we design a server that can connect to Ethernet through TCP and receive data. Besides, we design another database to store these data.The web server can access to the database and insert data to the database.The gateway designed in this thesis we complete the function of transmitting the physiological health data of the elderly collected by BAN network into the Internet. Finally these data will be saved in the database. So that, we can implment the function that we can view the parameters of the elderly’s physical health through the web browser This design makes the family members and medical personnel can timely access to the old man health data, and make accurate and timely care and treatment according to the specific circumstances.