摘要
对环境反射导致紫外线辐射照度的测量误差进行分析,提出了一种避免周围环境反射光线进入辐照计探头,从而消除反射误差的方法。在灯和探头之间设置狭缝挡板,可准确测量直接来自紫外线光源光线的辐射照度;设置阻光挡板,可准确测量通过反射间接到达辐照计探头光线的辐射照度。结果表明,直接辐射照度(45.7μW/cm^2)与间接辐射照度(5.3μW/cm^2)之和与在没有防反射挡板情况下测得的辐射照度(51.0μW/cm^2)相符。设置挡板的方法能够避免反射误差,使在不牺牲精度的基础上,在狭小的空间内进行紫外线测量成为可能,极大地降低了紫外线测量的成本。本文还推导出了设计带有防反射误差装置的测量系统所需的关键参数的计算公式。
The error caused by reflective light in ultraviolet(UV)irradiance measurement was analyzed,and a countermeasure to prevent this reflection error was proposed,which involved preventing reflection beams from reaching the probe.By setting a plate with a slot between the light source and the probe,the irradiance from the light source can be accurately and directly obtained;and with a baffle,the irradiance from the reflection beams can be accurately derived.The summation of the irradiance from the light source(45.7μW/cm^2)and the reflection beams(5.3μW/cm^2)matches the irradiance(51.0μW/cm^2)measured without anti-reflection fabrication.Setting a plate prevents the reflection error,and makes UV measurements in a small space feasible and cost effective,without sacrificing accuracy.The formulas for the calculation of the key parameters in designing the measurement system equipped with anti-reflection fabrication were derived.
作者
宋叶叶
张连峰
张金松
张庆珮
童张法
SONG Yeye;ZHANG Lianfeng;ZHANG Jinsong;ZHAGN Qingpei;TONG Zhangfa(Laboratory of Ecology and Environmental Protection,Research Institute of Tsinghua University in Shenzhen,Shenzhen 518057,China;School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China;Shenzhen Water(group)Company,Shenzhen 518031,China;Shenzhen Municipal Sewage Treatment and Recycling Engineering Laboratory,Shenzhen 518031,China)
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
2020年第2期64-72,共9页
Journal of Radiation Research and Radiation Processing
基金
深圳市科技计划项目(JCYJ20180306170551939)
深圳市战略性新兴产业发展专项资金2017年第一批扶持计划(节能环保产业类)资助。
关键词
紫外线
测量误差
辐射照度
反射
缝隙挡板
Ultraviolet(UV)ray
Measurement error
Irradiance
Reflection
Baffle plate
作者简介
第一作者:宋叶叶,女,1996年8月出生,2018年于南京工业大学获得学士学位,现为深圳清华大学研究院实习生,广西大学化学工程专业在读研究生,研究方向为紫外线在净化环境方面的应用;通信作者:张连峰,博士,高级工程师,E-mail:zhanglf@tsinghua-sz.org。
