Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Measurement of Food Process Variables with Microcomputer

마이크로컴퓨터를 이용한 식품공정의 변수계측

  • Kang, Jun-Soo (Department of Food Industry, Dongeui Technical Junior College) ;
  • Suh, Myung-Gyo (Department of Food Industry, Dongeui Technical Junior College) ;
  • Chung, Shin-Kyo (Department of Food Science. and Technology., Kyungpook National University) ;
  • Choi, Jong-Uck (Department of Food Science. and Technology., Kyungpook National University)
  • 강준수 (동의공업전문대학 식품공업과) ;
  • 서명교 (동의공업전문대학 식품공업과) ;
  • 정신교 (경북대학교 식품공학과) ;
  • 최종욱 (경북대학교 식품공학과)
  • Published : 1992.12.01
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Abstract

To measure of important variables such as temperature, weight, and relative humidity in food processing process, computer-aided data acquisition system was composed of 16 bit microcomputer and PCL-711S interface board. Process variables in dehydration and storage of food were measured through sensors, converters, and computer system which were operated by the PC-LabDAS software for data acquisition, process control, and data analysis. The relationship between measured values of process variables and the output voltages of ADC showed more than 0.99 in $r^2$ value. Response time of sensors was enough fast to measure minute values changed in a moment.

식품가공 공정의 중요변수인 온도, 무게, 상대습도를 측정하기 위하여 16bit 마이크로컴퓨터와 PCL-711S 접속 board로 컴퓨터 시스템을 구성하였다. 자료수집, 공정제어 및 자료분석용 소프트웨어인 PC-LabDAS를 활용하여 센서, 변환기 및 컴퓨터시스템을 작동시켜서 건조 및 저장시 공정변수를 측정하였다. 온도, 무게 및 습도의 측정값과 변환기의 출력값 사이에는 $r^2$가 0.99이상으로 고도의 상관관계를 보였으며 센서의 감응속도도 순간적으로 변하는 미세한 값도 측정할 수 있을 만큼 충분히 빨랐다.

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