The Design and Implementation of Multi-Function Temperature Control System
碩士 === 長庚大學 === 電機工程研究所 === 92 === In this thesis, a PIC16F877 microprocessor-based multi-function digital temperature controller is designed, where the function module include LCM display, keyboard input, SSR driver circuit, PWM control signal, and RS485 asynchronous transmission. Resistance-change...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2004
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| Online Access: | http://ndltd.ncl.edu.tw/handle/98810081699533500928 |
| Summary: | 碩士 === 長庚大學 === 電機工程研究所 === 92 === In this thesis, a PIC16F877 microprocessor-based multi-function digital temperature controller is designed, where the function module include LCM display, keyboard input, SSR driver circuit, PWM control signal, and RS485 asynchronous transmission. Resistance-change oriented PT100 is used for the temperature sensor circuit and commercial instrument as used to calibrate the accuracy of designed circuits. In this thesis, Z-N parameter tuning rule is adopted to determine the parameter of PID controller. A house-used refrigerator is modified as the control platform to evaluate the performance of designed temperature controller. Experimental result illustrate that the precision is ±1％ within 200℃.
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