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차은종(Eun-Jong Cha),이인광(In-Kwang Lee),이유미(You-Mi Lee),한순화(Soon-Wha Han),한정수(Jeong-Su Han),서재원(Jae-Won Suh),박찬식(Chan-Sik Park),김경아(Kyung-Ah Kim) 대한전기학회 2012 전기학회논문지 Vol.61 No.9
Medical system for personal health management recently changes its paradigm from hospital service to self home care based on ubiquitous technology for healthcare anywhere at any time. The present study developed a wireless bio-signal measurement system for patients to self manage pulmonary disease and benign prostate hyperplasia(BPH), both of which are chronic diseases with increasing frequency in modern society. Velocity-type respiratory air flow transducer adapted to develop respiratory module for pulmonary disease management was simplified in structure to measure uni-directional flow since most important diagnostic parameters are evaluated on the expiratory flow signal only. Standard weight measurement technique was introduced to obtain urinary flow signal for BPH management. Three load cell signals were acquired for averaging to minimize noise, followed by accuracy evaluation. Transmission and receiver modules were also developed with user program for wireless communication. Averaged relative errors were 2.05 and 1.02% for respiratory volume and maximal flow rate, respectively, and the relative error was 2.17% for urinary volume, demonstrating that both modules enabled very accurate measurements. Wireless communication distance was verified within 15m, long enough for home care application. The present system allows the user to select a necessary measurement module on a particular health demand and to immediately provide the self-test results, thus better quality health care would be possible.
차은종(Eun-Jong Cha),최성수(Seong-Su Choi),이인광(In-Kwang Lee),김도경(Do-Kyung Kim),한순화(Soon-Wha Han),김경아(Kyung-Ah Kim) 대한전기학회 2010 전기학회논문지 Vol.59 No.12
Benign prostatic hyperplasia (BPH) significantly deteriorates the quality of life in aged men. Uroflowmetry is a convenient non-invasive clinical test to diagnose BPH. However, the test is usually performed in the presence of a technician, which may affect the way of urination for the lack of privacy. The present study developed a wireless uroflowmeter to provide the best privacy with a user program on PC evaluating the diagnostic parameters. Pilot experiment was followed to test clinical applicability.