Engineering Research Equipment: High Speed Data Acquisition/Analysis System

工程研究设备： 高速数据采集/分析系统

• 批准号: 9212909
• 负责人: David Miller
• 金额: $ 1.9万
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-01 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9212909&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Speed; Data

This equipment grant will be used for acquisition of a high- speed data acquisition and analysis system which will be used with an existing five nanosecond pulse-width laser for combustion studies. The system will allow for acquisition of sufficient data over the 5 nanosecond pulse width of an existing degenerate four-wave mixing laser combustion diagnostic to determine the temporal response of the system. In addition to acquiring the data, this system will process the information to provide a real-time measure of the performance of the combustion diagnostic system. In its initial application, this data acquisition system will be integrated into an in-situ pulse laser based diagnostic for measurement of hydroperoxy radicals generated during the combustion of hydrocarbons. This technique utilizes degenerate four-wave mixing of a low-lying absorption band of HO2 which is unique to that molecule, not having the spectroscopic interference problems associated with other absorption bands of this molecule in the fingerprint region of the electromagnetic spectrum. Successful completion of this research program will provide a new diagnostic tool to probe hydrocarbon oxidation and provide new insight into the chemistry which limits efficiency and controls emissions from hydrocarbon combustion systems.

这笔设备赠款将用于购置高速数据采集和分析系统，该系统将与现有的5纳秒脉冲宽度激光器一起用于燃烧研究。该系统将允许在现有简并四波混频激光燃烧诊断系统的5纳秒脉冲宽度上获取足够的数据，以确定系统的时间响应。除了获取数据外，该系统还将对信息进行处理，以提供燃烧诊断系统性能的实时测量。在最初的应用中，该数据采集系统将集成到基于脉冲激光的原位诊断系统中，用于测量碳氢化合物燃烧过程中产生的过氧化氢自由基。这项技术利用该分子特有的HO2低吸收带的简并四波混合，不存在与该分子在电磁光谱指纹区域的其他吸收带相关的光谱干扰问题。这项研究计划的成功完成将为探索碳氢化合物氧化提供新的诊断工具，并为限制碳氢化合物燃烧系统效率和控制排放的化学物质提供新的见解。