基于LabVIEW的沼气恒温监控系统的研究与应用  

Research and Application of Temperature Monitoring System for Biogas Project Based on LabVIEW

作　　者：李卉萍[1] 赵小磊[2] 

机构地区：[1]太原理工大学测控技术研究所,山西太原030024 [2]太原理工大学新型传感器与智能控制教育部重点实验室,山西太原030024

出　　处：《中国沼气》2014年第3期51-54,68,共5页China Biogas

基　　金：教育部科技研究重点项目(210270);山西省青年科技研究基金(2012021013-2)

摘　　要：文章介绍了一种基于虚拟仪器的沼气工程的恒温监控系统,该系统利用LabVIEW的模糊控制和PID工具相结合的方法,通过控制太阳能和地热能水泵的开闭实现了对沼气工程恒温50℃发酵。同时设计报警监控模块,实现对整个工程的实时监控。结果表明,该系统对沼气工程的主要参数实现了智能控制、实时监控,通过模糊PID恒温控制,提高了产气率。采用模糊PID控制方法能有效的缩短系统的调节时间,提高响应速度,增强了系统的动态响应性能。A kind of thermostatic control system for biogas project based on virtual instrument was introduced in this paper. This system adopted LabVIEW fuzzy control and combined with PID toolkit. The constant fermentation temperature of 50℃ was realized through the control of solar energy and open-and-close of geothermal pump. And a alarm monitoring module was designed at the same time so that to realize the real-time monitoring for the whole project. The experimental showed that the designed monitoring system could intelligently monitor and control the main parameters and achieve rel-time monitoring for biogas project. And constant temperature was realized by the fuzzy PID temperature control, and so gas production rate was increased. And it was showed that this PID control system could shorten the adjusting time for the biogas project, improve the response speed and enhance the dynamic response performance of the system.

关 键 词：LabIVEW 自动控制 模糊PID 报警监控 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] S216.4[自动化与计算机技术—控制科学与工程]