Design and developmentof an arm-based mobile monitoring system for intensive care unit (icu) patients
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Date
2009
Authors
Yu Wen, Tiong (Lily)
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Abstract
Despite the numerous telemedicine systems that have emerged in the past, the
Advanced Reduced Instruction Set Computer (RISC) Machine (ARM)-based mobile
monitoring system for Intensive Care Unit (ICU) patients is designed in order to
provide a low::;cost and affordable solution in ICU patients monitoring for small-scale
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hospitals. the designed monitoring system is constructed of patient terminal, doctor
terminal and server terminal. The patient terminal has a bedside monitor and vital
signs sensors, which provide vital parameters of temperature, blood pressure, pulse
rate and Saturation of Peripheral Oxygen (Sp02). The bedside monitor functions as
the control center of the system to acquire the vital parameters from the sensors. The
vital parameters are then sent to the ARM-based portable device in the doctor
terminal for monitoring purpose. The ARM-based portable device was developed
using ARM Versatile PB926EJ-S with Windows CE 5.0 as its Operating System (OS)
platform. The program for the portable device is written using Visual C# .NET,
which enables Graphic User Interface (GUI) display on the ARM-based portable
device. Besides that, the bedside monitor also sends the vital parameters to the
patient• database in the server terminal through Ethernet. The database allows the
doctors to check .the medical history of the patients more conveniently. The data
communication of the monitoring system is implemented by wireless approach using
XBee transceiver module~ which is of ZigBee standard. It is a low-cost wireless
communication solution and it is used for short-range data transmission, ideal for
ICU patients monitoring within the hospital area Equipped with an alarm system on
the bedside monitor and the ARM-based portable device, the doctors will be notified
when critical situations happen to the ICU patients. The system has been tested for
the accuracy of the vital signs sensors and the reliability of the XBee wireless
transmission. The reliability tests include Bit Error Rate (BER) test and Average
Access Time (AA T) test. Both tests were carried out in the library of the Universiti
Sains Malaysia (USM) Engineering Campus as it provides the similar indoor
environment as a hospital.
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Description
Keywords
Arm-based mobile , Intensive care