The Telecontrol System Design Of Automatic Spray Machine Chassis

In many agricultures operation process The process that sprays the medicine has been the most dangerous. Because the agrochemical remind between each leaf, the agrochemical fog drift anywhere and the drinking water pollution concerned by the public more and moreBut because the agrochemical usage in the technique fall behind time andspray fog apparatus leak severily and did not adopt the right protection measure that lead agrochemical remain between each leaf and drift of the agrochemical fog and the drinking water pollutions are more and more serious. Especially under the hot weather that The poisoned trouble of the agrochemical user takes place repeatedly. This require a kind of that make person still complete to spray under the condition of keeping off the farm land and more valid, more environmental protection to replace the present spray fog machine, The intelligence sprays fog machine to the orchar that undertaked by the the professor HE XIONG KUI of agriculture engineering College of The Chinese agriculture university acceptanted by "15" national science and technologies Group successfully in 2003. This symbolizes the our country to spray fog machine intelligence to turn and develops a major step forward But this mainly spray fog machine is to aim at the fruit tree, Because the geography of the field is much more complicated than orchard, This need a kind of spray fog machine more and precisely to adapt the field homework.In this paper, based on the test demand and research actuality at home and abroad, according to the development direction of instrument at present, its hardware and software design is discussed. Several problems are described: 1) The whole design idea is proposed after analyzing the function demand and design standard. The testing principle and hardware designing of tester are introduced respectively. It includes the signal collecting circuit of breakdown voltage, detecting circuit of breakdown current, control circuit for rotating electromotor on prescriptive direction, and keyboard and display circuit. The anti-interference measures of current detecting circuit are expatiated, it resolved that the power is cut off by hardware circuit. 2) The design and achievement of software is introduced, and the corresponding routine flow chart is given. 3) In the process of data collecting, for improving the dependability of data collection, the distributing diagram approach is used to eliminate the careless mistake data, and arithmetic average and recursive estimation algorithm is applied to process data. The experiment results are analyzed and compared with traditional methods. 4)The corresponding measures of anti-interference are given based on different interference source. Seen from the hardware, the anti-jamming of power system, bus, interface circuit is researched. Some software anti-jamming measures are investigated from the jamming aftereffect, and the development trend of electromagnetic compatibility is prescribed in chip system. Besides, the matching routine design of watchdog is developed. 5) In the end, performance demand of tester is affirmed, and the deficiency of design and the improved idea are proposed.