中文摘要：

针对温室环境施药劳动强度大,药雾对操作人员的健康影响严重的问题,该文研究开发了一种在温室（或温室群）中基于GPRS通信技术和集散控制原理的远程控制自动施药系统。采用多线程技术和socket编程技术设计了弥雾机远程管理系统软件,用户指令基于GPRS网络在上位机端与弥雾机端之间传输。根据弥雾机的不同工作条件定义了3种工作模式并设计了不同工作模式下的数据通信格式。弥雾机以STM32芯片为控制器采用Fuzzy-PID控制策略控制输出脉冲宽度调制（pulse width modulation,PWM）信号,用SIM900A模块接收上位机数据。通过通信试验、弥雾试验及沉积试验对远程控制自动施药系统验证,结果表明：上位机软件能够准确向弥雾机发送控制指令,弥雾流量、总弥雾量误差分别在3.9%、5%以内,系统的反应时间约2.25 s,弥雾机速度设定为18 cm/s时雾滴沉积变异系数最小。该研究可为温室弥雾机的研制提供参考。

英文摘要：

Because of its huge economic and social benefits, horticulture production in China develops rapidly. However, problems still exist with this rapid development such as improper infrastructure, inadequate facilities, the low product quality and safety, and high labor cost. All those limit the sustainable development of horticulture industry, particularly agricultural production in controlled environment. For lowering intensive labor cost and relieving serious operator＇s health impact caused by conventional pesticide application in greenhouse, we developed an advanced remote control system for greenhouse sprayer based on GPRS communication technology and distributed control principle. The objective of this paper was to develop a mist sprayer remote control automatic spraying system to lower high labor cost, to improve safety for greenhouse production, and to increase pesticide utilization rate. The system developed was divided into the upper computer and the mist sprayer. The upper computer run the mist sprayer management system software designed in Qt platform. According to the requirements of the mist sprayer management system design for the main interface, we established the mist sprayer management interface and parameter setting interface of the software. Multithreading was used for managing sprayers working in different greenhouses and socket technology to get the intercommunication between host computer and the mist sprayer. GPRS network was used to transmit user＇s instruction to the mist sprayer. Three work modes were defined as the work condition variation of sprayer. On the sprayer side, we introduced the hardware design of the mist sprayer control system with STM32F103ZET6 for the main controller and SIM900 A for GPRS module. The hardware circuit of the control system was designed according to these chips, which comprised of the periphery circuit of the main controller, the GPRS module circuit and the driving circuit of the motor. According to the characteristics of mist sprayer, we made arrangement of