【摘要】 为保证果园作物生长需要,更好地进行果树病虫害防治,提高农药利用率,减少环境污染,设计了基于PLC的可变量对靶弥雾喷药机控制系统。系统以PLC为核心,包括人机界面、对靶弥雾子系统和电动阀开度调整子系统,利用红外线传感器和超声波传感器获取树木信息,通过支持Modbus协议的速度传感器和流量传感器获取弥雾机行驶速度信息和管道内液体总流量信息,并使用HC-Suk8102触摸屏完成人机交互界面设计。试验结果表明:将红外线传感器和超声波传感器数据融合可有效提高检测精度,根据不同行驶速度实现了可变量弥雾;当行驶速度在3～4km/h之间时,弥雾总流量为12.0L/min;当行驶速度小于3km/h时,总流量为9.8L/min;当行驶速度大于4km/h时,总流量为15.0L/min。系统实现了精准弥雾,性能稳定,应用前景广阔。更多还原

【Abstract】 In order to ensure the needs of orchard crop growth, better control of fruit diseases and pests, improve the utilization rate of pesticides, and reduce environmental pollution, a PLC based variable control system of target mist spraying machine was designed.System with PLC as the core, including man-machine interface, the target subsystems of mist and electric adjustment valve, using infrared sensors and ultrasonic sensors trees information, by supporting Modbus protocol speed sensor and flow sensor for mist machine speed information and traffic information, the liquid in the pipe using HC-Suk8102 touch screen man-machine interface design.The test results show that the data fusion of infrared sensor and ultrasonic sensor can effectively improve the detection accuracy. According to different driving speeds, the variable mist mist is realized. When the driving speed is between 3-4 km/h, the total flow of mist mist is 12.0 L/min. When the driving speed is less than 3 km/h, the total flow is 9.8 L/min.When the driving speed is more than 4 km/h, the total flow is 15.0 L/min.The system has realized accurate mist, stable performance and wide application prospect.更多还原