THE RESEARCH OF WIRELESS APPLICATION PROTOCOL APPLIED IN THE HOME CARE SYSTEM G.B. Yu,I.P. Chao, J.L. Su Biomedical Imaging Lab. Department of Biomedical Engineering Chung Yuan Christian University Chung Li, 32023, Taiwan This work was supported by National Science Council, Taiwan, under Grant NSC E

Abstract  Telemedicine system of home care with the WAP platform. Provide the home care nurse access the hospital information system through the mobile phone. Provide the home care nurse access the hospital information system through the mobile phone.  Acquisition, transmitting and deposition the physical information of the home care patient into the database.  A high mobility, low cast and powerfully in the application of home care telemedicine system.

Introduction  1997, Taiwan Health Care Department performed the long-term care of home care system.  1999,S.J. Wang, G.J. Wu, J.L. Su connect the local- area wireless network and GSM cellular phone with the wireless modem and notebooks to transmit the patient’s physiological parameter and voice/image signal in a digitalized wireless mode.  2000,WAP service was started to use in Taiwan Telecommunications.

The aim of this research  Use the WAP to access the WWW internet with wireless communication networks that can transmit and receive the patient’s data from the home care database.  Use the GSM cellular phone and WWW internet system to build up the home care system in the telecommunication way.

Methodology  To grabble and transmit the patient’s heart sound. use electric stethoscope and newly designed acquisitive device to transmit the signal use electric stethoscope and newly designed acquisitive device to transmit the signal  To register and browse the home care data. communicate and data access between the WAP cellular phone and WWW server communicate and data access between the WAP cellular phone and WWW server  To build up database of home care system heart sound and the data will be storage in a WWW server database heart sound and the data will be storage in a WWW server database  To perform the home care telemedicine system

The spectrum of heart sound signal after amply and filter. The spectrum of 2K Hz demodulated heart sound signal

Window interface OS: 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 & limitation  Noise Data Data Signal Signal

System Performance & limitation  Cost: WAP service:5 NTD/ minute(0.14 USD/minute) WAP service:5 NTD/ minute(0.14 USD/minute) 2.5 minute/one time 2.5 minute/one time （ a ） Signal before transmit （ b ） Signal after transmit by cellphone （ c ） Signal after transmit by wireless lan

Cell phone & PDA Cell phone PDA Sizesmallbigger CostLowhigh Processing ability weakstrong Popularpopular Specific group Internet access WAP 、 GPRS 、 PHS 、 DOCOMO Palm VII (wireless modem) 、 RF 、 cell phone module Smart phone

Conclusion  Succeed to develop a WAP home care telemedicine.  Some limitation: cost 、 transmission rate  Further studies: New tools New tools Reduce errors Reduce errors Efficiency Efficiency