대한전기학회논문지:시스템및제어부문D (The Transactions of the Korean Institute of Electrical Engineers D)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

128 채널 심장전기도 전치 증폭기의 설계

The Design of 128 Channels Cardiac-Activation Pre-Amplifier

  • 유선국 (延世大 醫學工學 敎室) ;
  • 장병철 (延世大 胸部外科學 敎室) ;
  • 정동일 (삼성전자 반도체 연구원) ;
  • 한영오 (남서울大學 電子情報通信 學部)
  • 발행 : 2001.11.01
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초록

The computerized cardiac analysis system, which acquires and analyzes the electrical activation signal propagating along the surface of the heart, is indispensible equipment for the open heart surgery and electrical cardiac study. In this paper, the design requirement and the electrical circuit analysis are performed to construct the multi-channel cardiac activation pre-amplifier necessary for a signal conditioning circuit. The general 64 channel configuration is expanded into 128 channels to enhance the spatial resolution on the mapped surface of the heart. The 128 channels pre-amplifier consists of input circuit, differential amplifier, right leg driven circuit and isolation part. It has distinct features; high voltage protection, leakage current limitation, isolation and the maximization of common mode rejection ratio with respect to the half-cell potential difference due to different electrode materials. The final pre-amplifier circuit is assembled with 8 boards, each of which composing of 16 channels.

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참고문헌

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