2세대 전류 컨베이어를 이용한 쌍안정 멀티바이브레이터설계 및 저항형 브리지 센서에의 응용
Bistable Multivibrator Using Second Generation Current Conveyor and Its Application to Resistive Bridge Sensor
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초록
저항형 센서 브리지들을 인터페이싱 하기 위한 간단한 저항 편차-시간 주기 변환기를 제안한다. 제안된 변환기는 두 개의2세대 전류 컨베이어(current conveyor Ⅱ: CCⅡ)로 구성된다. 제안된 변환기는 연산 증폭기 또는 연산 트랜스컨덕턴스 증폭기(OTA)로 구성되는 기존의 변환기들보다 회로 구성이 간단하다는 장점을 가진다. 제안된 변환기를 AD844로 구현한 CCⅡ를 이용하여 PSPICE 시뮬레이션을 진행하였다. 실험 결과는, 변환기가 100～500 Ω의 저항 편차 범위에 걸쳐서 0.01934 ms/Ω의 변환 감도를 가지며 선형 오차는 ±0.002% 이내라는 것을 보여준다.
Abstract
A simple resistance deviation-to-time period converter is proposed for interfacing resistive half-bridge sensors. Itconsists of two 2nd generation current conveyors(CCⅡs). The proposed converter has simpler circuit configuration thanthe conventional converters using operational amplifiers or operational transconductance amplifiers(OTAs). The proposedconverter was simulated using CCⅡ implemented with AD844 IC chips. The simulation results show that the converterhas a conversion sensitivity of 0.01934 ms/Ω over a range of 100-500 Ω resistance deviations and a linearity error lessthan ±0.002%.
참고문헌 (10)
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