The Structure And Realization Of Weeding Robot For Paddy Fields

With the development of modern agriculture production to the trend of large-scale,diversification, and precision, as well as the strengthening of people’s awareness ofenvironmental protection and the importance of food quality and safety issues, the worldfavored countries are paying more and more attentions to the organic cultivation of ricegrowing without pesticides or minimize the use of pesticides. According to the shortcomingsand deficiencies weeding robots have which control system is complex, requires turningradius, waste paddy field acreage and so on, the research of this subject is proposed.This paper puts forward a new structure of weeding robot in stamping mode for organicpaddy fields on the basis of analysis of research of weeding robots at home and abroad. Withthe help of crawler moving mechanism, the weeding robot realizes pulling and cutting offweeds in the paddy field just by walking over and stamping weeds flat in between the riceshoots. The mud generated simultaneously as robot’s crawler go along the path, will alsocontribute to the suppression of photosynthesis of weeds, as the mud deposits, which may reston weeds in between the rice shoots, will do damage to the habitat of weeds and contribute tothe suppression and removal of weeds. The auxiliary supporting device and the leapfrogmobile device can cooperate to gain its desired positions. This structure can apply to theweeding task of both paddy field in large scale and that in small scale on bad conditions. Onthe basis of principles of weeding robot, we processed this new structure into prototype andtest it, analysis the conditions which the weeding robot might encounter in the paddy fields,all things above are preparing for the future test in the paddy fields.First, this paper gives an analysis of research on the weeding methods of paddy fieldsand some weeding robots at home abroad, on this basis, analyzing the disadvantages of existpaddy weeding robots and Consolidated several program of weeding robots, on this basis todetermine the structure of the weeding robot in this paper.Then, this paper takes the weeding robot as research object, analyzes three movements ofthe weeding robot：walking in the paddy fields, auxiliary support, leapfrog line feed, and alsomake a analysis that how the weeding robot move when weeding robot encountered the stones,pits in the paddy fields, or windy weather. On this basis, proposes weeding robotcorresponding motion strategies. Especially in extremely conditions, how the weeding robotoperating in the paddy fields, summarized the fundamental conditions that weeding robot canmove in normal level in the paddy fields. Finally, we give the weeding robot ground test and paddy test under the test conditions,improved and optimized the structure of the weeding robot in order to meet the environmentalneeds of the paddy field better.At the end of this paper, conclusions and prospects of this research are given, and alsoput forward the innovation of the weeding robot, which provide a reference for the future newweeding robot.