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The Research of Multi-channel Patrolling and Checking Control System about Rice Breeding

Author: ChenLiangFu
Tutor: HanYuJie
School: Northeast Forestry University
Course: Detection Technology and Automation
Keywords: Rice breeding Checking and control Wireless communication Multi-sensor information fusion
CLC: TP274.4
Type: Master's thesis
Year: 2011
Downloads: 68
Quote: 0
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Abstract


In recent years, with the rising number of population in our country, the cultivated lands area continues to decline, the grain shortage problem in China has gradually become the significant hurdles about the sustainable development of agriculture. Among lots of the grain crops in our country, about two thirds of the population’s main food is rice. Whether the rice planting on a large scale production is the key to solve this problem, but the stand or fall of rice breeding is the key to large scale rice planting production. At present, the traditional rice breeding control method, can not control the temperature of the seed germination very well, is difficult to ensure that the rice seed budding rate. The seeds may be vulnerable to high fever or even may not. They all may cause great losses to agricultural production. And it is hard to meet modern large-scale rice crop production needs.After analyzing the research situation of home and abroad, using multilevel distributed structure design thought, this paper designs a new kind of rice breeding multi-channel checking control system, has overcome the shortage of that the temperature is difficult to control or the low of detection precision in the previous rice seed germination process. The breeding cycle is shortened and rice seed germination is improved. The design mainly has three parts, multiple temperature gathering terminal, upload data terminal and PC monitoring terminal. Compared with other rice breeding measurement device, this design has many features such as:among temperature gathering terminal and upload data terminal, we import the wireless communication, solve the problem of complex field connections and make site installation and debugging time shorten. In PC monitor terminal, using VB programming, implement the visualization of man-machine interface, can deposit data to database, display data by form, and draw temperature changes with time curves. In rice breeding, using multi-sensor information fusion technology, make measuring data fusion, improve the accuracy of measurement and control system.Based on P89LPC938 microcontroller and taking it as the core, this essay has completed the system’s hardware design and software design. The hard ware circuit includes temperature gathering circuit, output control and automatic alarm circuit, display circuit, wireless communication circuit and serial interface communication circuit. The software design mainly includes the main program, temperature collection procedures, output control alarm procedures, wireless communication and serial interface communication program in Micro controller terminal. And includes PC database design, login interface design, the main interface design and includes data form display, curve display all the parts of the function realization, etc in PC monitor terminal. Based on the research of multi-sensor information fusion technology, the paper has proposed multi-sensor information fusion structure in the control of rice breeding, using distribution method to validate the consistency for the collected temperature data, has eliminated errors. After researching the principle of adaptive weighted fusion, this method is applied in the control of rice breeding. The simulation experiment and practical data fusion experiments have been done. The results show that using adaptive weighting algorithm to detect data fusion can effectively remove errors about measurement data which is detected by temperature sensor in rice seed germination process, and can improve accuracy of measurement and control system.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Centralized testing and roving detection system
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