Design of Fumigation Temperature Control System Based on Single-Chip Microcontroller

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• 作者：Zhang Hai-feng  ; ;   ; ^{ayzhaoal@126.com} ; Zhao Ai-ling ; HOU Jun
• 关键词：DS18B20 ; AT89C52 ; Improved PID algorithm ; Pulse Width Modulation ; Temperature control
• 刊名：Procedia Engineering
• 出版年：2011
• 出版时间：2011
• 年：2011
• 卷：15
• 期：Complete
• 页码：246-250
• 全文大小：333 K

文摘

In order to mitigate problems such as temperature non-linearity, severe hysteresis, and large magnitude of fluctuation, we have designed a fumigation temperature control system based on AT89C52 single-chip microcontroller. The combination of improved PID algorithm and Pulse Width Modulation (PMW) technology results in whole-process fumigation temperature controlling with reduced overshoot and shortened lag time. Our test results show that the design leads to superior temperature control capability and dynamic performance. The fumigation temperature control system based on this design has very good stability and reliability, with friendly user-machine interface that allows easy operation. The circuits and programs used in the design have good versatility and portability.