Title :
High-precision temperature control system based on PID algorithm
Author :
Yang, Jun-Hong ; Bi, Xi-Yan-
Author_Institution :
Dept. of Inf. Eng., Zhengzhou Railway Vocational & Tech. Coll., Zhengzhou, China
Abstract :
This system uses 8bit AT89C51 CPU as a core for building a electronic oven temperature control system with high precision, the temperature was changed to voltage signals by the thermal resistor PT1000 and amplified by LM358, then the analog voltage signal is converted to digital data by the AD0809. The PID algorithm was adopted as the software for power and temperature control of the furnace, the control accuracy is up to 0.2°C. At the same time, with a temperature display and can upload the data to PC for the data curve being printed. The experiment shows that it´s very useful in the practical system of agriculture and industry or household.
Keywords :
control engineering computing; electric heating; microcontrollers; multiprocessing systems; ovens; power control; temperature control; thermistors; three-term control; AD0809; AT89C51 CPU; LM358; PID algorithm; PT1000; analog voltage signal; control accuracy; data curve; electronic oven temperature control system; high precision temperature control system; power control; temperature display; thermal resistor; voltage signal; AD0809; AT89C51 microcontroller; PID; Pt1000;
Conference_Titel :
Computer Application and System Modeling (ICCASM), 2010 International Conference on
Conference_Location :
Taiyuan
Print_ISBN :
978-1-4244-7235-2
Electronic_ISBN :
978-1-4244-7237-6
DOI :
10.1109/ICCASM.2010.5622406
