变压器油中溶解气体光声光谱检测一维光声池信号传输模型研究与设计  

Design and Study of Signal Transmission Model of One-dimension Photoacoustic Cell for Detection of Dissolved Gases in Transformer Oil

作　　者：陈新岗[1,2] 马志鹏[1] 黄会贤[3] 陈果[1] 张俊耀[4] 

机构地区：[1]重庆理工大学,重庆400054 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030 [3]重庆市电力公司长寿供电分公司,重庆401220 [4]重庆市电力公司永川供电分公司,重庆402160

出　　处：《高压电器》2014年第4期35-41,共7页High Voltage Apparatus

基　　金：国家自然科学基金青年科学基金资助项目(51107155);重庆市自然科学基金项目(cstc2012jjA90018);输配电装备及系统安全与新技术国家重点实验室访问学者项目(2007DA10512711410);重庆理工大学研究生创新基金资助项目(YCX2012313)~~

摘　　要：根据光声信号激励基本原理与传输线理论,应用声电类比方法,提出了基于声学传播模型的一维纵向谐振腔传输线模型。根据实际设计需求,改进并提出一维纵向光声池整体模型。应用所建传输线模型对一维纵向光声池谐振频率、品质因数、池常数等指标与光声池结构参数关系进行模拟分析与讨论。结果表明,光声信号强度与一维谐振腔长度及光源调制频率具有相关性,且随谐振腔长度增加,光声池谐振频率具有减小的趋势;存在最优光声腔截面半径使与一定谐振腔长度对应的品质因数取得最大值。模拟结果对一维纵向光声池结构设计具有较高指导意义。According to the principle of photoacoustic （PA） gas detection and transmission line, this paper presented and improved model of one-dimension PA cell signal transmission line with analogy analysis. The model simulation presented the resonant frequency, quality factor and cell constant of PA cell. It also presented the relationship between these performance indexes of PA cell and its geometrical parameters. The model simulation results show that the correlation can be found between lengths of resonant cavity and resonant frequency, and the correlation between lengths and radius of resonant cavity also can be found. The model simulation has high theoretical instructive significance.

关 键 词：光声信号 一维纵向光声池 传输线 类比分析 

分 类 号：TM41[电气工程—电器]