Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2004.07b
- /
- Pages.902-905
- /
- 2004
Development of 64-Channel 12-bit 1ks/s Hardware for MCG Signal Acquisition
심자도 신호 획득을 위한 실시간 64-Ch 12-bit 1ks/s 하드웨어 개발
- Lee, Dong-Ha (Anyang University) ;
- Yoo, Jae-Tack (Anyang University)
- Published : 2004.07.05
Abstract
A heart diagnosis system adopts Superconducting Quantum Interface Device(SQUID) sensors for precision MCG signal acquisitions. Such system is composed of hundreds of sensors, requiring fast signal sampling and precise analog-digital conversions(ADC). Our development of hardware board, processing 64-channel 12-bit 1ks/s, is built by using 8-channel ADC chips, 8-bit microprocessors, SPI interfaces, and parallel data transfers between microprocessors to meet the 1ks/s, i.e. 1 ms speed. The test result shows that the signal acquisition is done in 168 usuc which is much shorter than the required 1 ms period. This hardware will be extended to 256 channel data acquisition to be used for the diagnosis system.