Code Design To Artificial Intelligence Controlling Greenhouse Wireless Communication System Based On FPGA Technology

Along with the intelligent greenhouse control research, the wireless communication unceasing progress, and benefits from the computer technology, the intelligent greenhouse expert system unceasing obtains the consummation and the development, but also has many new questions and the challenge. In the traditional distributional greenhouse control system, the upper position machine and the lower position machine, through the wired bus connection, has limited the greenhouse control scale and of freedom in some kind of degree. Now the wireless communication maturity, causes to be possible to quote the wireless communication to the greenhouse control results in the correspondence part, but does not need to increase very many costs, at the same time obtains with the wired communication equally matched signalling accuracy. Most importantly that we will apply the new technology to the facility agriculture, this will be a bold attempt also is very valuably studies.In the topic research process, proposed one kind of feasibility that is very strong, has the prospects for development the intelligent greenhouse control system. Namely based on WEB technology intelligent greenhouse expert control system, this system fully causes the greenhouse control using the network technology and the expert system technology not to be restricted by region.This topic takes the wireless communication as the technical background support, has studied emphatically based on the FPGA digital communication system main module modelling and the VHDL code. This article divides into three main parts:The first part has carried on the study to the present greenhouse technology and the wireless communication, studied one kinds of communication system models to suit the greenhouse, take Altera Corporation's FPGA as the core, has constructed overall construction of the greenhouse communications system, has divided the main function module, explained its reciprocity. Stated main performance index of the communications system, chosed Altera the Flex 10K chip suitable for the system.Second part for system module is main design part, research main connection module. In the development selected the development method that is from the top to the down to carry on the plan and the development, caused the system from the very beginning to conform to the design plan. Studied the digital modulation module and the corresponding digital demodulation module, the digital multiple connection module and the numeral divides meets the module the principle research and its disperser module design. Finally stated emphatically the synchronized vibration type, the principle, enable the system to be able to avoid at the beginning of the design realization appearing the vibration.The third part is this main confirmation analysis part, first state the important tool Matlab which has carried on the summary, then used the Simulink correspondence toolbox to construct with the principle wireless communications system model. Finally, the dynamic simulation programming model carried on the experiment to analyze and to confirm, from the system confirmation, three parameters error rate, the eye chart, the scatter diagram tentative data analysis obtained, had proven this system precision and the stability conformed to the design goal.Today appear unceasingly which in the new technology and the new method, the interdisciplinary studies, full use changes extremely important, introduces the new technology to the agriculture, that will be able to enhance the productive greatly. The intelligent greenhouse is one of the successful model, in the natural intelligent greenhouse also had many technical question and involved to the cost question to solve, but I deeply believed that along with the research the question certainly can be soluted.