Labview氧传感器测量与故障诊断+源程序
毕业论文关键字：氧传感器；数据采集；Labview；信号处理
Abstract
This paper mainly studies the air fuel ratio control and emission control system composed of oxygen sensor and three element catalyst system., in-depth understanding of the structure characteristics and principle of oxygen sensor, a thorough analysis of the oxygen sensor test standard parameters and test specifications;. Proposed to realize oxygen sensor data acquisition and performance testing solutions in the LabVIEW development platform, software program to complete the oxygen sensor sampling, complete the detection result display and graphical analysis and environment, Excel data storage for the completion of the detecting data collected oxygen sensor voltage waveform of the LabVIEW and NIOS 11 combination , well solve the detection of oxygen sensor, LabVIEW program voltage resistance and response time formed Excel data file, test results and curve display, store and display characteristic curve and the main indicators of performance parameters. The detection system can improve the oxygen sensor to detect the work efficiency and realize the real-time analysis of parameters of oxygen sensor. Can improve the engine power, economy can also be improve the three-way catalytic conversion device conversion rate and reduce pollution emissions.
Keywords: Oxygen sensor； Data acquisition； Labview；Signal processing
目 录
第一章 概述 1
1.1 课题的背景意义 1
1.2 国内外动态 1
1.3 课题难点与关键内容 1
第二章 氧传感器 3
2.1 氧传感器作用 3
2.2 氧传感器结构 3
2.2.1 氧化锆式氧传感器 3
2.2.2 氧化钛式氧传感器 4
2.3 氧传感器工作原理 4
第三章 氧传感器的检测标准与数据分析 6
3.1 氧传感器的常见故障 6
3.2 氧传感器的波形分析 6
3.2.1 氧传感器的正常波形 6
3.2.2 氧传感器的杂波分析 7
3.3 数据流分析及检测 9
3.3.1 氧传感器检测 9
3.3.2 数据流分析 11
第四章 程序的设计与实现 13
4.1 Labview简介 13
4.2 方案设计 13
4.3 界面设计与功能设计 14
4.4 程序设计 17
4.4.1 程序的4种状态 17
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