Health Monitoring System Design And Research Based On Zigbee Technology

With the increased aging of society,the long-term care of chronic diseases has become an important social problem.Some sudden illness and home health care,such as cardiovascular disease,have also required long-term home care,so the wireless network technology used in home care has become an unstoppable trend.This is not only the wireless network can provide greater flexibility,mobility,save the cost of wiring and energy,but also it can premise of real-time monitoring without affect the freedom of patients.Zigbee technology is a new close-up,low-complexity,low-power,low rate, low-cost wireless network technology.It was based on IEEE802.15.4 standards, through a number of network nodes coordinate to achieve communication in building automation,intelligent home,wireless monitoring and other areas there are broad prospects for development.Thus the system as a platform to Zigbee technology and designed A health monitoring systems based on Zigbee technology.practical applications from the perspective of the health monitoring system on the overall design and implementation process of the hardware and software modules.The main work includes the following three aspects:(1) Completion of the pulse data acquisition module hardware design and software design as a platform of 89S51,implementation of a series of functions such as pulse signal acquisition,amplification,shaping,counting.At the same time,the pulse data will be transmitted through the serial port to the wireless communication module.(2) Design wireless communication module using Jennic's JN5121,set up a working frequency of 2.4GHz in full compliance with the Zigbee protocol for wireless transmission platform,development environment at Jennic CodeBlocks prepared and compiled under the node applications,the implementation at various pulse transmission between the node data.(3) Complete the speech signal acquisition and conversion by using the JN5121's built-in ADC and DAC,and develop the communication process based on the 802.15.4 protocol stack and establish a stable voice communications links.In this paper,the network topology,the design of the circuit module,data transfer mechanism proposed its own program;And then through the experimental analysis of the pulse signal acquisition,transmission and the feasibility of wireless voice communications and work performance,found in the actual communication of potential problems and proposed solutions;Final design and set up a Zigbee-based health monitoring technology demonstration systems,by testing,the system can be better collected from the pulse of the wireless transmission of voice calls and then this whole process can be achieved on the pulse of the real-time monitoring of the human body,also has real-time call when it necessary,the pulse data to back up for viewing at the same time,achieve a long-range purpose of monitoring health status.