为实现稳态燃烧烟雾机的自动化和网络化，提高其智能化程度，将智能传感器标准IEEE1451.4引入烟雾机控制系统设计中。在对IEEE1451.4标准进行分析的基础上，提出了 带有MMI(混合接口智能传感器)和NCAP(网络适配处理器)的智能化稳态燃烧烟雾机控制系统的总体设计方案。测定了喷管口轴心温度与燃烧时间的关系，以及喷管口轴心温度与药液 流量的关系,并以此设计了烟雾机控制系统软件工作流程。依据IEEE1451标准，设计了1wire数字接口、传感器自动校准方式，实现了传感器的即插即用，使传感器与控制系统无缝 连接。对稳态燃烧烟雾机的控制系统进行了实验调试，获得了良好的雾化效果。
Abstract
In order to implement the automation and networking of the steady state combustion fogger, a smart transducer standard IEEE1451.4 was introduced in this paper to its control system of fogger for improving the degree of intelligence, and a systemic scheme of the intelligent control system with MMI and NCAP was put forward. By testing the relationship between temperature of the axis of nozzle mouth and burning time, as well as that between temperature of the axis of nozzle mouth and liquid flow, the appropriate delay time was obtained, based on which and the operating principles of the fogger the workflow of control system was designed. Furthermore, a “plug&play” thermocouple sensor was implemented by improving the traditional sensor through 1wire digital interface and by the way of automatic calibration method. Therefore, the thermocouple sensor was capable of connecting with control system seamlessly. Finally, the performance test of the control system was discussed which showed that the control system based on IEEE1451 could perfectly finish the whole spray process with good spray effect. This paper provided an efficient technology approach for developing intelligent control system of steady state combustion fogger.
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参考文献
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基金
收稿日期：2009-12-05修回日期2010-04-22基金项目：国家林业局“948”项目(2005-4-16);南京林业大学科技创新基金项目(CX07-040-3)作者简介：李赵春(1978—)，讲师，博士 生。Email: lzc.hn@163.com。引文格式：李赵春,周宏平,陈睿,等.
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