Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2004.11a
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- Pages.444-447
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- 2004
Implementation of high-speed parallel data transfer for MCG signal acquisition
심자도 신호 획득을 위한 고속 병렬 데이터 전송 구현
- Lee, Dong-Ha (Anyang University) ;
- Yoo, Jae-Tack (Anyang University)
- Published : 2004.11.11
Abstract
A heart diagnosis system adopts hundreds of Superconducting Quantum Interface Device(SQUID) sensors for precision MCG(Magnetocardiogram) or MEG(Magnetoencephalogram) signal acquisitions. This system requires correct and real-time data acquisition from the sensors in a required sampling interval, i.e., 1 mili-second. This paper presents our hardware design and test results, to acquire data from 256 channel analog signal with 1-ksample/sec speed, using 12-bit 8-channel ADC devices, SPI interfaces, parallel interfaces, and 8-bit microprocessors. We chose to implement parallel data transfer between microprocessors as an effective way of achieving such data collection. Our result concludes that the data collection can be done in 250