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港口集装箱岸桥吊具控制系统改造 被引量:2
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作者 颜全生 丘俊 《深圳职业技术学院学报》 CAS 2009年第3期27-31,共5页
通过对某港口集装箱岸桥吊具结构及功能的分析,采用西门子S7-300PLC及AS-i现场总线技术组成的吊具控制系统,代替原单板机与接触器控制系统,对港口集装箱岸桥吊具控制系统进行了改造,包括吊具电控系统、总线、控制软件等.改造后的吊具控... 通过对某港口集装箱岸桥吊具结构及功能的分析,采用西门子S7-300PLC及AS-i现场总线技术组成的吊具控制系统,代替原单板机与接触器控制系统,对港口集装箱岸桥吊具控制系统进行了改造,包括吊具电控系统、总线、控制软件等.改造后的吊具控制系统经过将近1年多的实际远行,故障率明显下降,生产作业量大幅度提高,取得较好的效果. 展开更多
关键词 S7-300PLC 集装箱吊具 AS-I总线 控制系统:改造
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Locality Improvement Technology for Auto-control System of Aquatic Seedling 被引量:1
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作者 高桂生 郑立新 《Agricultural Science & Technology》 CAS 2012年第11期2449-2452,共4页
[Objective] The aim was to improve part of auto-control system of aquatic seedling breeding and to lay foundation for highly-efficient and stable use of the sys- tem. [Method] The executive and drive modules of the au... [Objective] The aim was to improve part of auto-control system of aquatic seedling breeding and to lay foundation for highly-efficient and stable use of the sys- tem. [Method] The executive and drive modules of the auto-control system were im- proved, after which real-time monitor, data display and alarm modules were tested on time. [Result] In the test, for the improved system, stability and sensitivity were enhanced; different components matched better; transmitting electric resistanc6 was reduced. [Conclusion] The research provides references for auto-control of water temperature and dissolved oxygen, and faults clearing in aquatic seedling breeding. 展开更多
关键词 Aquatic seedling cultivation Execution and driving MODULE Monitoringand warning
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