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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Wong, C. Chan, K.L. |
| Copyright Year | 2000 |
| Description | Author affiliation: Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China (Wong, C.) |
| Abstract | This project aims to develop a microcontroller-based portable multi-functional patient monitor. The monitor is designed to record four channels of biosignals simultaneously: 2 channels of electrocardiogram (ECG), body temperature and noninvasive blood oxygen level (SpO/sub 2/). The monitor consists of 3 functional parts: biosignal conditioning, digital circuit and storage, on board and host software. The biosignal conditioning part consists of four analogue circuit modules, one for each channel of biosignal. In general, each analogue circuit module carries out differential amplification, band-pass filtering, power line interference elimination, DC level restoration, and output amplification. The digital circuit and storage part consists of a 89C52 microcontroller, an 8-channel A/D converter, an LCD panel and a SRAM data store. To overcome the limited memory addressing space of the microcontroller, the SRAM data store is configured and managed under the bank switching technique. In this project, 8/spl times/32 Kbytes 62256 SRAM chips are used. On board program is written in assembly language and pre-installed in the internal ROM of the microcontroller. The host PC software is written in Java. Recorded biosignals can be transmitted to the host PC via a serial link for display, analysis and permanent storage. At present, the ECG and SpO/sub 2/ modules are completed. Testing has been carried out to record these two biosignals simultaneously. On-going work is in the development of body temperature module and the expansion of data store. |
| Starting Page | 2611 |
| Ending Page | 2614 |
| File Size | 594003 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780364651 |
| ISSN | 1094687X |
| DOI | 10.1109/IEMBS.2000.901394 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2000-07-23 |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Patient monitoring Microcontrollers Electrocardiography Temperature Digital circuits Random access memory Blood Condition monitoring Band pass filters Filtering |
| Content Type | Text |
| Resource Type | Article |
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