Abstract

Aim to the workshop temperature and humidity fluctuation is bigger influence the stability of the pu-erh tea ripe tea fermentation quality and the production efficiency of the enterprise. Control system is developed based on S7-300, it can automatically adjust the workshop environment temperature and humidity. According to the conditions for pu 'er ripe tea production, the S7-300 PLC control system overall scheme is put forward. The system is divided into data acquisition and workshop control two parts. Data acquisition part can automatically collect workshop environment temperature and humidity, tea reactor temperature; Control part can automatically adjust according to the need of production workshop temperature and humidity and ventilation oxygen. The small artificial fermentation environment is created and it can improve the uniform of the pu-erh tea ripe tea fermentation efficiency, shorten the fermentation period. Finally by analyzing the collected data, the results of the analysis verify the control system is feasible. This study provides the technical support for the late pu'er ripe tea production quality control and automation.

Keywords:

Control systems, S7-300, tea, temperature and humidity,

References

1. Bao, X.H., Z. Tao and S.Y. Li, 2008. The feasibility study of the Pu'er tea. Pu'er tea deep process. J. Simao Normal Coll., 24(2): 29-31.
   
2. Chen, K.K., H.T. Zhu, D. Wang et al., 2006. Study on Pu'er Tea ripe tea after fermentation, isolation and identification. Yunnan Plant Process Aspergillus, 28(2): 123-126.
   
3. Gong, J.S., H.J. Zhou, X.F. Zhang, S. Song and W.J. An, 2005. Yunnan sun green tea in solid state fermentation of microorganism and the change of composition. J. Tea Sci., 25(4): 300-306.
   
4. Wu, X.Q., 2012. PLC puer tea heap in production automation application. Inner Mongolia Univ., Nat. Nat. Sci., 27(3): 287-292.
   
5. Yunnan Agricultural University, 2010. One Kind of Tea Turning Device. China, 200520121011.1, 2010-05-12.
   
6. Zhao, Y.J., Y.Z. Huang and H.J. Zhou, 2012. Design and Implementation er tea fermentation workshop and control system. Foods Mach., 28(2): 98-101.
   

Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.