A WSN SMART MEDICATION SYSTEM
Date Issued
2010
Date
2010
Author(s)
Hsu, Wei-Chih
Abstract
In this work, a smart medication system, which employs the wireless sensing network (WSN) technologies, is designed, implemented and demonstrated. The primary functions of the system include the medication reminder and the medication tracking for the patients with chronic diseases. The system can be easily deployed in a nursing home which accommodates many elderly people. Each system consists of a master panel (MP) and seven portable smart pill-boxes (SPB). The MP serves as a network gateway/database for its own smart pillboxes. Each SPB independently provides the functions of medication reminding and monitoring for patients. The routing network among the Dockings is constructed using the tree topology. The star topology is used for the communication between each Docking and its own seven SPBs. Moreover, two methods are proposed for detecting the existence of pills in a SPB. One is to detect the mechanical contact of metal electrodes, and the other is to measure the magnetic field intensity variation using a magnetic sensor.
A WSN communication configuration for reducing the probability of packet-loss rate is also proposed. In a star network with one MP and 14 SPBs, each SPB sending one 100-byte packet every 200 ms. More than 95% packets can be correctly transmitted with a simple time-division method and CSMA/CA. The tree topology network employed among MPs can expand this medication system into a multi-user system. The relationship between Round-Trip Time (RTT) and hop count is also measured. According to the measured results, the time for transmitting a packet in the tree topology network can be estimated. Furthermore, the measurement results show that the magnetic sensing method has good repeatability.
Subjects
wireless sensor network
smart pill-box
tree topology
magnetic sensor
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-99-R97522715-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):2266b8a1b5ed0b13c4934cdbd1104dfc