謝銘鈞2006-08-232018-06-292006-08-232018-06-291999-07-31http://ntur.lib.ntu.edu.tw//handle/246246/29523由腹部非侵入式的記錄胃肌電信號， 通常被稱作EGG 信號，我們設計了前置放 大器、增益20 倍的5 階低通濾波器以及可 切換倍率的次級放大器，配合8 位元的數 位類比轉換介面，將胃電信號儲存於微算 機當中進行分析，提供後續胃電量測的記 錄及研究工具。Myoelectrical activities of the stomach that is recorded noninvasively from electrodes on the abdomen are usually termed EGG. We designed a preamplifier, a fifthorder low-pass filter with a gain of 20, and a variable-gain amplifier. The EGG signals were digitized by a 8-bit A/D coverter and then analyzed in the frequency domain. This system is helpful for EGG recording.application/pdf84331 bytesapplication/pdfzh-TW國立臺灣大學醫學工程學研究所胃電微控制器資料擷取濾 波器EGGmicro-controllerdata acquisitionfilterreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/29523/1/882314B002245M08.pdf