电子测量技术
電子測量技術
전자측량기술
Electronic Measurement Technology
2015年
10期
101-105
,共5页
扬尘检测%光散射%激光测量%信号处理
颺塵檢測%光散射%激光測量%信號處理
양진검측%광산사%격광측량%신호처리
dust detection%light scattering%laser measurement%signal processing
针对传统扬尘传感器在测量方法中测量精度低、长期户外测量精度保持性差的不足，在 Mie 光散射原理基础上，研究了一种多光路扬尘检测方法，设计了一套面向建筑工地扬尘检测的光学扬尘浓度测量系统。介绍了扬尘监测系统的光学测量原理，研究了新方法中光通量和离子浓度计算方法，并对检测系统参数进行了优化分析。设计了多光路激光扬尘检测系统，分析了光透过率与粉尘层厚度之间关系。对所设计系统以国控点数据为基础进行了对比实验，实验结果表明新方法相对国控点数值最大偏差8.5%，较 PPD4NS 检测精度明显提高。
針對傳統颺塵傳感器在測量方法中測量精度低、長期戶外測量精度保持性差的不足，在 Mie 光散射原理基礎上，研究瞭一種多光路颺塵檢測方法，設計瞭一套麵嚮建築工地颺塵檢測的光學颺塵濃度測量繫統。介紹瞭颺塵鑑測繫統的光學測量原理，研究瞭新方法中光通量和離子濃度計算方法，併對檢測繫統參數進行瞭優化分析。設計瞭多光路激光颺塵檢測繫統，分析瞭光透過率與粉塵層厚度之間關繫。對所設計繫統以國控點數據為基礎進行瞭對比實驗，實驗結果錶明新方法相對國控點數值最大偏差8.5%，較 PPD4NS 檢測精度明顯提高。
침대전통양진전감기재측량방법중측량정도저、장기호외측량정도보지성차적불족，재 Mie 광산사원리기출상，연구료일충다광로양진검측방법，설계료일투면향건축공지양진검측적광학양진농도측량계통。개소료양진감측계통적광학측량원리，연구료신방법중광통량화리자농도계산방법，병대검측계통삼수진행료우화분석。설계료다광로격광양진검측계통，분석료광투과솔여분진층후도지간관계。대소설계계통이국공점수거위기출진행료대비실험，실험결과표명신방법상대국공점수치최대편차8.5%，교 PPD4NS 검측정도명현제고。
Traditional dust sensor is low precision and its precision keeping is poor in case of out door using,to resolve these problems,a multi-laser dust detection method is studied based on Mie light scattering principle and a dust concentration detection system is designed .The optical measuring principle of dust detection system is introduced, luminous flux and particulate concentration calculation method is studied,and parameters of the measuring system are optimized.Moreover,a multi-laser dust detection system is designed and the relationship between light transmittance and dust thickness is analysis.Experiment is performed compared with national measurement point and PPD4NS dust sensor,the result show that maxim relative deviation of the new system compared with national measurement point is 8.5%,the measuring accuracy is improved greatly compared PPD4NS.
