摘要
自制近红外LED厚度传感器综合实验仪.LED发出波长为0.936μm的单色红外光,由硫化铅探测器接收单色光源照射到被测塑料薄膜后光的强度,信号经放大器放大由控制器计算显示被测塑料薄膜的厚度.选定最佳工作距离14mm、最佳工作电流100mA进行实验,厚度测量相对偏差在2.0%以内.
A thickness measurement instrument was set up with near infrared LED sources.The emission and detection optical paths of near infrared(0.936μm)LED sources were designed,and a non-destructive detection of the thickness of different plastic films was carried out.The results showed that the measurement error of thickness was within 2% when the optimum distance was14 mm and the optimum current was 100 mA.
引文
[1]苏海林,赵娣.低能γ射线反散射法测量塑料薄膜厚度的研究[J].传感器与检测技术,2006,27(6):455-457.
[2]李彦,李众,俞孟蕻.塑料薄膜厚度控制算法设计[J].华东船舶工业学院学报,1998,12(6):48-52.
[3]杜鑫,莫长涛,贺平,等.多路单色光源水分测量方法的研究[J].哈尔滨商业大学学报(自然科学版),2010,26(3):314-317.
[4]邓湘,郑义忠.塑料薄膜及涂层厚度在线测量研究[J].计量学报,2001,22(4):268-271.
[5]李秀梅,吴群勇,肖韶荣.发光二极管的光电特性测试实验[J].物理实验,2013,12(33):1-4.
[6]郇帅,吕加,王明,等.基于光谱吸收法经皮给药药液浓度检测研究[J].哈尔滨商业大学校报(自然科学版),2014,30(3):332-334.
[7]章新友.药用物理学[M].南昌:江西高校出版社,2013:194.