THE RESEARCH OF WIRELESS THE RESEARCH OF WIRELESS APPLICATION PROTOCOL APPLIED IN APPLICATION PROTOCOL APPLIED IN

THE HOME CARE SYSTEMTHE HOME CARE SYSTEM

G.B. Yu,I.P. Chao, J.L. SuG.B. Yu,I.P. Chao, J.L. SuBiomedical Imaging Lab.Biomedical Imaging Lab.

Department of Biomedical Engineering Chung Yuan Christian Department of Biomedical Engineering Chung Yuan Christian UniversityUniversity

Chung Li, 32023, TaiwanChung Li, 32023, Taiwan

This work was supported by National Science Council, Taiwan, under Grant NSC 89-2213-E033-026.

AbstractAbstract

Telemedicine system of home care with the WAP Telemedicine system of home care with the WAP platform.platform. Provide the home care nurse access the hospital Provide the home care nurse access the hospital

information system through the mobile phoneinformation system through the mobile phone..

Acquisition, transmitting and deposition the physical Acquisition, transmitting and deposition the physical information of the home care patient into the information of the home care patient into the

databasedatabase.. A high mobility, low cast and powerfully in the A high mobility, low cast and powerfully in the

application of home care telemedicine system.application of home care telemedicine system.

IntroductionIntroduction

1997, Taiwan Health Care Department performed the 1997, Taiwan Health Care Department performed the long-term care of home care system.long-term care of home care system.

1999,S.J. Wang, G.J. Wu, J.L. Su connect the local-1999,S.J. Wang, G.J. Wu, J.L. Su connect the local-area wireless network and GSM cellular phone with area wireless network and GSM cellular phone with the wireless modem and notebooks to transmit the the wireless modem and notebooks to transmit the patient’s physiological parameter and voice/image patient’s physiological parameter and voice/image signal in a digitalized wireless mode.signal in a digitalized wireless mode.

2000,WAP service was started to use in Taiwan 2000,WAP service was started to use in Taiwan Telecommunications.Telecommunications.

Cable

A/D Device

CCD

Sound Card

Keyboard

Vital Signal

Still Imge

Audio

Text

Transmit Site

PC

Note Book

WirelessCommunication

Receive Site

Monitor

DataBase

Hospital LAN

Internet

The aim of this researchThe aim of this research

Use the WAP to access the WWW internet with Use the WAP to access the WWW internet with wireless communication networks that can transmit wireless communication networks that can transmit and receive the patient’s data from the home care and receive the patient’s data from the home care database. database.

Use the GSM cellular phone and WWW internet Use the GSM cellular phone and WWW internet system to build up the home care system in the system to build up the home care system in the telecommunication way.telecommunication way.

MethodologyMethodology To grabble and transmit the patient’s heart sound.To grabble and transmit the patient’s heart sound.

use electric stethoscope and newly designed acquisitive use electric stethoscope and newly designed acquisitive device to transmit the signaldevice to transmit the signal

To register and browse the home care data.To register and browse the home care data. communicate and data access between the WAP cellular communicate and data access between the WAP cellular

phone and WWW serverphone and WWW server

To build up database of home care system To build up database of home care system heart sound and the data will be storage in a WWW server heart sound and the data will be storage in a WWW server

databasedatabase

To perform the home care telemedicine systemTo perform the home care telemedicine system

Stethoscope

Heart soundAudi o

ampl i fi erBand-pass

fi l terDC l eveldetector

Accumul atorModul ate generator

Si ne wavegenerator

Audi oampl i fi er

Demodul atorci rcul t

Low-passfi l ter

PC sound card

Patient Database Ssrver

The spectrum of heart sound signal after amply and filter.

The spectrum of 2K Hz demodulated heart sound signal

Window interfaceOS:

•Windows 2000 Advance Server

Database Server:

•MS-SQL Server 7.0

Complier:

•Borland C++ Builder 5.0

•By TCP/IP protocol to link the database server (three tier)

WAP Simulator

•The M3 Gate WAP simulator simulated the WAP cellular phone access the WWW Internet.

•The Internet WAP Gateway translate the Wireless Markup Language (WML) and access the home care WAP website by the Active Server Page (ASP)

The accesses of the WAP home care website by the WAP cellular phone.

The browsers of the essential patient's home care data registered by patient's ID.

The patient's home care data entry by the WAP website.

System Performance & limitationSystem Performance & limitation

NoiseNoise DataData SignalSignal

System Performance & limitationSystem Performance & limitation

Cost:Cost: WAP service:5 NTD/ minute(0.14 USD/minute)WAP service:5 NTD/ minute(0.14 USD/minute) 2.5 minute/one time2.5 minute/one time

（ a） Signal before transmit

（ b） Signal after transmit by cellphone

（ c） Signal after transmit by wireless lan

Cell phone & PDACell phone & PDA

Cell phoneCell phone PDAPDASizeSize smallsmall biggerbiggerCostCost LowLow highhigh

Processing Processing abilityability

weakweak strongstrong

PopularPopular popularpopular Specific groupSpecific groupInternet Internet accessaccess

WAPWAP、、 GPRSGPRS、、 PHSPHS、、DOCOMODOCOMO

Palm VII (wireless modePalm VII (wireless modem)m) 、、 RFRF、、 cell phone cell phone modulemodule

•Smart phone

ConclusionConclusion

Succeed to develop a WAP home care telemedicine.Succeed to develop a WAP home care telemedicine. Some limitation: costSome limitation: cost 、、 transmission ratetransmission rate Further studies:Further studies:

New toolsNew tools Reduce errorsReduce errors EfficiencyEfficiency