Barley Growth Monitoring System And Its Photovoltaic Power System Based On LabVIEW

At present, the requirements of the field production and facilities environmental monitoring are getting higher and higher, and the advanced monitoring and processing system is urgently needed in the modern agriculture. However, the measuring precision, automatization and reliability are lower with traditional equipment, in this study, the Lab VIEW virtual instrument technology is applied to barley field growth monitoring test system, which has an important economic significance and application prospect to convert the system hardware into software and improve instrument adaptability.In addition, photovoltaic power generation is the most effective and convenient way for solar energy. However, improving the conversion efficiency of solar energy is one of the key issues to be solved. The barley field monitoring system of power supply for independent photovoltaic power generation system as the research object, to make efficient use of solar energy as the goal, photovoltaic power generation system conversion efficiency optimal control theory and experimental research are studied. This thesis is based on the National Natural Science Foundation of the tutor, and the design and monitoring system of the power supply system of the barley growing monitoring system is studied.In the first part of this paper, on the base of the systematic analysis of the main structure and application of solar photovoltaic power generation nowadays, the suitable solar panels and batteries were selected. Then the output characteristics and the main factors of the efficiency were analyzed in solar photovoltaic power generation system influence, and photovoltaic power generation simulation model was established. Secondly, the independent photovoltaic power systems with maximum power point tracking algorithms existed were discussed to improve the output power of the solar cell maximum power point tracking methods.Finally the fuzzy self-seeking algorithm is presented to control the output voltage and current of the solar cell and track at the maximum power point in real time. The experimentalresults showed that the fuzzy self-optimized tracking method can increase the system efficiency to 6%.In the second part of the paper, the virtual instrument monitoring system was described,and then structure scheme and software and hardware design of the Lab VIEW virtual instrument were accomplished. The received barley field images were displayed andstored in the database,at the same time the control commands of remote monitoring were sent to front-end image acquisition device. In this thesis, the virtual block diagram program of TCP / IP transmission protocol was completed, and the image acquisition virtual block diagram program was designed by Ni IMAQ and IMAQdx driven image acquisition,and the IMAQ create avi, IMAQ avi write frame, IMAQ avi close sub VI were programmed to achieve avi video compressionand storage.The basicremote monitoring was finally realized.