日光温室物联网设计研究——基于传感器智能网络操控系统  

Design and Research on Internet of Things of Sunlight Greenhouse——Based on Sensor and Intelligent Network Control System

作　　者：王向军[1] 刘志刚[2] 李荣[1] 汪小志[2] 林卫国[3] 孙欣杰[2] 

机构地区：[1]北京农业职业学院信息技术系,北京102442 [2]南昌大学环境与化学工程学院,南昌330031 [3]华中农业大学工学院,武汉430070

出　　处：《农机化研究》2014年第8期189-192,共4页Journal of Agricultural Mechanization Research

基　　金：国家自然科学基金青年基金项目(51305152)

摘　　要：随着计算机硬件设备的不断更新和发展,计算机智能操作系统被广泛地应用到工程领域,其中PLC智能控制是最常用的智能控制系统之一。运用PID闭环控制算法,通过对PID算法的改进,降低了系统反应动作的延时时间,增大了系统的灵敏度。对于外部参数的采集过程,采用编程方式对参数采集过程实现了自动控制。为了验证设计的数学模型和算法的有效性,以日光温室物联网设计为例,对程序和算法进行了验证。通过计算发现:在相同样本输入的情况下,电机输出值和闭环PLC系统的拟合值的结果相差不大,最大仅为0.2%,达到了控制要求。其中,丢包率最低仅为0.4%,符合计算机数据传输的精确性要求,为日光温室智能控制系统的研究提供了理论参考。Along with the continuous renewal and development of computer hardware, computer operating system is widely applied to the engineering fields , in which, intelligent control is one of the most commonly used intelligent control systems. By using PID closed-loop control algorithm, an improvement of the PID algorithm reduced the system＇ s delay time of response , and increased the system＇s sensitivity. As to the acquisition process for the external parameters, by using the way of programming, it realizes the automatic control on the parameter acquisition process. In order to verify the validity of the mathematical model and the algorithm, it took the greenhouse network design as an example to verify the procedure and the algorithm. Through calculation,it was found that in the condition of the same sample input, the result is less different between the motor output and the fitting values of closed-loop PLC system of is small, and the maximum is 0.2% , which achieved the control requirements. And the minimum packet loss rate is only 0.4% , which meets the precision of computer data transmission, and provides a theoretical reference for the study of intelligent eontror system in greenhouse.

关 键 词：日光温室 物联网 传感器 智能网络 PID算法 PLC控制系统 数据传输 

分 类 号：S625.51[农业科学—园艺学]