Microcomputer-based data acquisition system for the measurements of temperature and weight in food processing
1987
Choi, B.D. | Chun, J.K. (Seoul National Univ., Seoul (Korea R.). Dept. of Food Science and Technology)
To develop a microcomputer-based data acquisition system for the measurement of variables such as temperature and weight in food processing, a low-cost data acquisition system was developed using an Apple II microcomputer. The system consisted of a microcomputer, a temperature sensor made of pt-100, a strain gauge load cell for weighing, a preamplifier for signal conditionings and an interface device. Interface device was built with programmable interface chip MC 6821, tristate buffer 74244 and analog-to-digital converter ADC 0809. The analog signals of temperature and weight were serially acquired upon the program. The BASIC language was used for operating the data acquisition and data handling programs. The system successfully measured the variables such as temperature and weight with various sampling intervals in food dehydration process
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