| Title |
Development of Wireless Respiratory Air Flow and Urinary Flow Measurement System for Home Healthcare |
| Authors |
차은종(Cha, Eun-Jong) ; 이인광(Lee, In-Kwang) ; 이유미(Lee, You-Mi) ; 한순화(Han, Soon-Wha) ; 한정수(Han, Jeong-Su) ; 서재원(Suh, Jae-Won) ; 박찬식(Park, Chan-Sik) ; 김경아(Kim, Kyung-Ah) |
| DOI |
https://doi.org/10.5370/KIEE.2012.61.9.1350 |
| Keywords |
Bio-signal measurement ; Home healthcare ; Respiratory air flow ; Urinary flow |
| Abstract |
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. |