著者

殿畑 美也子 堀田 素志

出版者

独立行政法人 石川工業高等専門学校

雑誌

石川工業高等専門学校紀要 (ISSN:02866110)

巻号頁・発行日

vol.43, pp.33-38, 2011 (Released:2017-08-01)

参考文献数

5

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A recorder consists essentially of an ECG (Electrocardiogram) amplifier, a LCD (Liquid Crystal Display), a SD (Secure Digital) memory card and a PIC (Peripheral Interface Controller). ECG waveforms induced from a human body are amplified and digitized by built-in AD (Analog-to-digital) converter in a PIC. Waveform data is simultaneously recorded on a SD Card and displayed on a LCD. These functions are controlled by a PIC. Basic electrical characteristics of a recorder were measured in this experiment. The continuous 12-bit AD conversion of sampling frequency of up to 500 Hz was available. A recorder operating at system clock frequency of 10 MHz consumed an electric current of 19 mA and can be continuously recording for about 100 hours using alkaline AAA batteries.