A Portable Health Monitoring System based on Wireless Sensor Network

Abstract

Health monitoring system is one of most important and practical applications of wireless sensor network
(WSN). Even though various health monitoring devices based on WSN are used, they are still quite limited in the sense of
mobility and accuracy. In this project a new wearable health monitoring system is proposed, which consists of vital
sensor nodes for multiple patients. Here the accuracy of the measurement of electrocardiogram signal and body
temperature is enhanced, and the sensor node is optimized for the use in WSN. The idea was largely imbibed from [1].
The wearable health monitoring system provides the communication between the wearable sensor nodes and relay nodes
in the proximity even during the movement of the user, allowing for real-time monitoring of biometric signals. The
overall system is depicted in block diagram and it consists of three components: the wearable vital sensor node, a relay
node, and host computer monitoring the user. The wearable vital sensor node measures and processes the ECG signal,
removing the noise and transmitting the processed signal. The relay nodes are used to increase the limited
communication range of the wearable vital node, and they are installed on the ceiling of the ro om. Finally, the host PC
uses a terminal implemented as a .net application to monitor the measured biometric signal.
In our project we are using ZigBee modem for the transmission of data from remote location to personal computer.
ZigBee is one of the most popular wireless network technologies in the world. ZigBee wireless network is a new close
range, simple, low power, low data rate and low cost technology. It is based on IEEES02.1S.4 standard. Thousands of
tiny sensors coordinate with each other to achieve communication. The sensor requires very little energy to relay the
data from one sensor to others using radio waves, so such communication is efficient.