原油含水率檢測電路設計

電子機電論文編號:JD828  論文字數:6247,頁數:18

原油含水率檢測電路設計

目錄
摘要 I
Abstract I
引言 1
1．測量元件的基本原理 1
1.1電容傳感器的探頭基本原理 1
1.2電容式傳感器探頭的測量機制 1
1.3溫度傳感器的工作原理 2
1.4 8051單片機 4
1.5 74LS164與單片機的連接 5
2．測量電路的工作原理 5
2．1 電荷轉移法測量電容原理 5
2．2 電壓-頻率轉換 6
2．3 溫度補償的工作原理 7
3．整機工作原理 9
4．測量系統的總體電路設計 9
5．原油含水率檢測系統的軟件設計 11
5.1測量系統的軟件設計 11
5.2溫度補償系統的軟件設計 12
5.3 顯示電路 13
6.結論 14
參考文獻 15
謝   辭 16

摘要：含水率是原油檢測中一重要技術指標，在我國，原油的開采、生產、運輸等環節的含水率測量水平還很低。本文主要介紹了一種基于電容式傳感器，利用電荷轉移法測量原油含水率的工作電路，本設計中含水率測量范圍可達到0～100%，誤差＜1％，線性度好，靈敏度高，穩定性好，漂移小。性能可靠的軟件設計既保證系統盡量全的智能化測量功能，又保證寬測量范圍的線性化，以及系統的快速響應特性。
關鍵詞：原油含水率；敏感探頭；電容傳感器；8051

The Detect Circuit Design of Moisture content in crude oil
Abstract: Moisture content is an important technical indicators in Oil detection. In China, Crude oil extraction, production, transportation and other aspects of measuring moisture content is still very low. In this paper, Mainly Introduced a working circuit for Moisture content measurement of crude oil. In this paper, Moisture content measuring range up to 0 ~ 100%, p <1%, Good linearity, high sensitivity, good stability, and drift small. The design of reliable software systems as much as possible not only to ensure full functionality of the intelligent measurement and to ensure wide range of linear measurement, as well as the system's rapid response characteristics.
Key words: water content in crude oil;Sensitive probe;Capacitance sensor;8051