原油含水率检测电路设计

论文编号:JD828  论文字数:6247,页数:18

原油含水率检测电路设计

摘要：含水率是原油检测中一重要技术指标，在我国，原油的开采、生产、运输等环节的含水率测量水平还很低。本文主要介绍了一种基于电容式传感器，利用电荷转移法测量原油含水率的工作电路，本设计中含水率测量范围可达到0～100%，误差＜1％，线性度好，灵敏度高，稳定性好，漂移小。性能可靠的软件设计既保证系统尽量全的智能化测量功能，又保证宽测量范围的线性化，以及系统的快速响应特性。
关键词：原油含水率；敏感探头；电容传感器；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

目录
摘要 I
Abstract I
引言 1
1．测量元件的基本原理 1
1.1电容传感器的探头基本原理 1
1.2电容式传感器探头的测量机制 1
1.3温度传感器的工作原理 2
1.4 8051单片机 4
1.5 74LS164与单片机的连接 5
2．测量电路的工作原理 5
2．1 电荷转移法测量电容原理 5
2．2 电压-频率转换 6
2．3 温度补偿的工作原理 7
3．整机工作原理 9
4．测量系统的总体电路设计 9
5．原油含水率检测系统的软件设计 11
5.1测量系统的软件设计 11
5.2温度补偿系统的软件设计 12
5.3 显示电路 13
6.结论 14
参考文献 15
谢   辞 16