https://scholars.lib.ntu.edu.tw/handle/123456789/638363
標題: | Portable EGG recording system based on a digital voice recorder | 作者: | Jang, J-K MING-JIUM SHIEH Kuo, T-S Jaw, F-S |
關鍵字: | Amplifier | Electrogastrogram | Frequency modulation | Portable EGG | 公開日期: | 2009 | 卷: | 33 | 期: | 3 | 來源出版物: | Journal of medical engineering & technology | 摘要: | Cutaneous electrogastrogram (EGG) recording offers the benefit of non-invasive gastrointestinal diagnosis. With long-term ambulatory recording of signals, researchers and clinicians could have more opportunities to investigate and analyse paroxysmal or acute symptoms. A portable EGG system based on a digital voice recorder (DVR) is designed for long-term recording of cutaneous EGG signals. The system consists of electrodes, an EGG amplifier, a modulator, and a DVR. Online monitoring and off-line acquisition of EGG are handled by software. A special design employing an integrated timer circuit is used to modulate the EGG frequency to meet the input requirements of the DVR. This approach involves low supply voltage and low power consumption. Software demodulation is used to simplify the complexity of the system, and is helpful in reducing the size of the portable device. By using surface-mount devices (SMD) and a low-power design, the system is robust, compact, and suitable for long-term portable recording. As a result, researchers can record an ambulatory EGG signal by means of the proposed circuits in conjunction with an up-to-date voice-recording device. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/638363 | ISSN: | 03091902 | DOI: | 10.1080/03091900701456597 |
顯示於: | 醫學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。