2004, Volume 6, Issue 11
Strategic Study of CAE >> 2004, Volume 6, Issue 11
Research and Application of V/F-based Intelligent Multiplex Data-collecting System & Serial Communication
School of Electrical & Automation Engineering, Tianjin University, Tianjin 300072, China
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Abstract
This system can collect and check temperatures. It uses AD620 amplifier to magnify signals, LM331 voltage-frequency transformer to transform electricity quantity in the A/D transforming part, and 80C51 chip to collect and store data to communicate with PC by using Visual Basic6.0 language. This paper also offers the data from the Meijiang District to which the system is applied.
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References
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[ 2 ] 杨振江, 孙占彪, 王曙梅, 布线涛.智能仪器与数据采集系统中的新器件及应用[M ].西安:西安电子科技大学出版社, 2001 link1
[ 3 ] NationalSemiconductorCorporation.LM 231A/LM 231/LM331A/LM 331Precisionvoltage to frequencyconverters[A ].NationalSemiconductorManual[M].1999
[ 4 ] 苏 凯, 刘庆国, 陈国平.MCS -51系列单片机系统原理与设计[M ].北京:冶金工业出版社, 2003 link1
[ 5 ] 李朝青.PC机及单片机数据通信技术[M ].北京:北京航空航天大学出版社, 2002 link1
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