The Design and Realization of Intelligent Control System in Temperature and Humidity of Tea Intelligent Fixation

Aiming at the difficulty in control in tea fixation process, the intelligent control technology is adopted in the research which is for the core to the C8051F340 SCM and adopts the multi-point detection system to collect the temperature and humidity data. Besides, the data transmission with the epistemic machine can be realized by the I2C Bus, SPI and so on while the control rules and parameters of the controller can be intended. Thus it can be seen that the multi-parameter control of the temperature and humidity can be realized in tea green removing technology. The bunk watchdog circuit is adopted in hardware design to repair the systems bug automatically and safeguard the control system operate stably for a long time in this research. Additionally, the PID control algorithm is applied in software design to control systemic error less than 2%. Practical application indicates that this system is with simple structure, high reliability and good scalability, and it also can reduce the amount of labor and improve the teas quality.

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Application of PLC in Intelligent Control of Heating Pipe Network

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.313-314.418 ◽

2013 ◽

Vol 313-314 ◽

pp. 418-421

Author(s):

Yun Feng Ma

Keyword(s):

Control System ◽

Heat Source ◽

Intelligent Control ◽

High Reliability ◽

Heating System ◽

Pipe Network ◽

System Operation ◽

Actual System ◽

Remote Monitoring System ◽

Intelligent Control System

The traditional heating system just controls the heat source by the PLC,but it dose not control the heating pipe.so it can not solve the problem that it is hot near the heat source but cold when far away from it.The problem of pipe network imbalance also can not be solved.To solve these problems,we design an intelligent control system of pipe network,which combine the traditional heating control system to realize saving energy.This paper introduces the design thought of the application of Siemens programmable controller in heating pipe network,and elaborate on the hardware design and the software programmable of the control system.The actual system operation shows that the remote monitoring system of heating pipe network based on Siemens PLC is high reliability and high stability, and the effect in energy saving is remarkable.

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The Research of Fixation Method in Tea Processing Based on Fuzzy Control

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.433-435.1145 ◽

2013 ◽

Vol 433-435 ◽

pp. 1145-1149 ◽

Cited By ~ 1

Author(s):

Jian Zhang ◽

Yan Ting Lan ◽

Chun Bo Shao ◽

Yi Wan

Keyword(s):

Fuzzy Control ◽

Detection System ◽

Fixation Method ◽

Control Rules ◽

Humidity Change ◽

Temperature And Humidity ◽

Spi Bus ◽

Two Parameters ◽

Point Detection

Aiming at the nonlinear and coupling phenomena of temperature and humidity changes appearing in the course of tea fixation, this paper introduces the fuzzy control technology in the process of making tea. STM32F107 microcontroller is as the core of the whole system and the multi-point detection system is used in real-time collection of two parameters of temperature and humidity . In addition, data transmission is realized between PC and I2C, SPI bus. The control rules and parameters of controller are formulated and the temperature and humidity of tea fixation multi-parameter control are realized. Fuzzy decoupling control is adopted to meet the process requirement of temperature and humidity change in process. It improves the precision of temperature and humidity control and the quality of tea.

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