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With the increase in the amount of fruit exports in China , more and more demanding requirements of the market for fruit quality , and the utilization of pesticides is necessary to ensure the quality of the fruit . But at present , China 's spraying machinery technology backward, labor-intensive, low utilization of pesticides , serious environmental pollution , especially in the mountains of orchards, need to manually spraying of pesticides , not only caused a serious waste of pesticides , but also serious harm to the spray health. Compared to other developed countries of the world , China's pesticide spraying technology behind for decades. Therefore , it is necessary to make a study of the orchard spray system . This article aims to design an orchard automatic spray control system , the spatial position according to the fruit trees in orchards job , it is possible to adjust the level of the ejection rod , to control the switching of the nozzle according to the location of the fruit trees . Thereby reducing the labor intensity and improve the utilization of pesticides , reduce environmental pollution. This study was to signal recognition system module , control module , the boom swing module design : (1 ) signal acquisition module using infrared sensor acquisition fruit trees spatial location and location information , the control module microcontroller core regulatory modules using a combination of mechanical and hydraulic control mode , the operation of the hydraulic cylinder is controlled by a microcontroller as well as the mechanical parts of the motor starts work , in order to adjust the position of the lance ; ( 2) hardware system by the microcontroller and its peripheral circuits including signal acquisition modules, motor driver module , control module , spray module for receiving, processing and implementation of the fruit tree information ; ( 3 ) software controls the system using the C language program is compiled , and includes the main program , the signal acquisition procedures, control procedures , motor driver, spray program ; ( 4) is designed spray trolley for to spray evenly experiments . Experimental space plane and with MATLAB and Excel the spray uniformity testing and analysis , were proved the feasibility of the system . In this paper , the design of the orchard automatic spray system, through the test to reach the expected requirements . Fruit trees is detected , the system will automatically adjust the boom height and nozzle switch , provides a theoretical basis for the improvement and development of automatic spray control system .
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