| The coefficient of even degree in micro-irrigation was an important index sign in measure the even degree of water in micro-irrigation, it also an important parameter of the micro-irrigation system design. Many researches expresses that even degree in micro-irrigation in influence in a lot of factors, include: hydromechanics variation of micro-irrigation system; manufacturing deviation coefficient of irrigator; the degree stopped up of the irrigator; the form of arrange and combination of irrigator etc. Now it was difficulty to accurate the even degree of water in micro-irrigation, the most valid method is to proceed the on-the-spot measurement, in mostly circumstance we should collect discharge of each irrigator by handicraft measure, it was made the whole test process time become vary longer, and it made impossible to expel the random error bring by artificial factor in calculation result, it also made impossible to expel the system error bring by variety of system pressure, therefore, the credibility of the experiment result is low. In domestic and international, there have no completely method in the aspects of the automatic examination of the even degree of water in micro-irrigation, now we need a kind of fast and intellective examination method for the even degree of water in micro-irrigation, those well make the fast intelligence of the even degree of water in micro-irrigation become possible. Those all well gave some technical support in the application of water-saving irrigation technique in our nation.We want to research one kind method of testing the even degree of water in micro-irrigation, through the combine between sensor and one-chip processor technology. This method could automatic collection data and deal with the date by one-chip processor. Because gathering the flow of all irrigators at the same time, we could dispel the impact of the change of the systematic pressure on flow rate. In manifestation we dissolve the influence of the pressure factor, so can make the even degree shown responded the actual circumstance accurately in the last. Therefore this kind of experiment the method provide a kind of fast and intellective examination method for theeven degree of water in micro-irrigation, there is important meaning in the aspects of testing for the even degree of water in micro-irrigation.Based on theories of One-chip Processor Control Theories, Micro-irrigation Technique, Analogue and Digital Electronic, Fluid Mechanics and Machine Design, attained the course has to cross and blends. The main results are as follows:1, A One-chip Processor Control for the testing of the even degree of water in micro-irrigation was researched, a kind of examination system for the even degree of water in micro-irrigation was designed and some contrast experiments has been made with handicraft measure. The results showed that the system was better than handicraft measure in efficiency and accuracy.2, A kind of trial method that using photoelectric sensor test the discharge of irrigator were put forward, the irrigator discharge auto-collects instrument has been Designed and manufactured. The results showed that the system has simple construction and usage convenient, and it also has a better conjunction with one-chip Processor, all of those made the level of the auto-test for the irrigator discharge had the further increasing.3, A kind of trial method that dissolve the pressure different in different irrigators were put forward. The results showed that the trial method dissolve the pressure different in different irrigators, and attained the on trial purpose.4, Making use of the micro-irrigation synthesize experiment set, combined the micro-irrigation synthesize experiment set and the micro-irrigation even degree intelligence testing system, the experiment automation level has been increased.Some proposals of further study of the micro-irrigation even degree intelligence testing system were mentioned as well in the thesis. |
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