碩士 / 中原大學 / 醫學工程研究所 / 92 / The respiratory, heartbeat and metabolic rate of turtles are slow. In addition, turtles can tolerate anoxic state for long duration. It is, therefore, very interesting to recode the heart rate control of the turtle in its natural setting. The aim of the current work is to develop a wireless recording equipment to study the heart rate regulating mechanism of freely moving turtles.
The proposed system consists of signal acquisition, radio frequency (RF) transmission, signals processing and date analysis components. The electrocardiogram (ECG) is obtained by three silver screws chronically implanted into the body of the turtle. After amplification the ECG signals were transmitted through a RF digital transceiver (model A06-0001), and signals were detected by a receiver. The signals were saved and analyzed.
Our wireless ECG device can receive signals from a distance up to 8 m in radius, with the result comparable to a standard equipment (DSI, Physio Tel Telemetry). When temperature changed from 30℃ to 18℃, the heart rates of the turtles decrease from 35.8±1.3 bpm to 20.8±1.7 bpm. The heart rates were 24.4±1.2 bpm and 47.8±1.8 bpm respectively when the turtles submerged and emerged voluntarily at 36℃. The heart rates were 9.64±1.3 bpm and 18.4±2.7 bpm respectively when the turtles were submerged and emerged at 20℃. The heart rates were influenced by temperature and the driving conditions.
| Identifer | oai:union.ndltd.org:TW/092CYCU5530012 |
| Date | January 2004 |
| Creators | Chung-Chieh Hsu, 許忠傑 |
| Contributors | Jui-Hsiang Hsieh, Chen-Tung Yen, 謝瑞香, 嚴震東 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 84 |
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