基于LD的近红外农产品水分检测仪的设计  

Design of a special near infrared detector for the moisture cotent of agricultural product based on semiconductor laser

作　　者：胡静芳[1] 陈斌[2] 陆道礼[2] 詹敦平 

机构地区：[1]江苏大学机械工程学院,镇江212013 [2]江苏大学食品与生物工程学院,镇江212013 [3]江苏飞格光电有限公司,镇江212016

出　　处：《现代仪器》2012年第1期44-47,共4页Modern Instruments

摘　　要：设计以半导体激光器为光源的农产品水分近红外检测仪,将光源与分光系统合二为一,摒弃一般光谱仪器中复杂的分光系统,提高仪器的稳定性;样品在积分球内采用体吸收工作模式,可以最大限度减少样品粒度造成的散射现象对检测精度的影响,经3种物料的水分检测试验证明检测结果具有较高的精度,能满足一般生产和流动行业对农产品和食品的水分快速检测的需要。We designed a near infrared instrument which was used to detect the moisture content of agricultural products. This instrument used semiconductor lasers as light source. It combined the !ight source and beam splitting system, removed the complex spectral sys tem in conventional instrument, and thus improved stability of the instrument. The testing samples employed full absorption mode in the integrating sphere and could most efficiently reduce errors caused by light scattering due to different sizes of the sample particles. The precision of Water content detection was sufficiently high from detection of 3 kinds of samples, being able to meet the rapid demand of moisture detection in agricultural and food products of the general production and circulation industry.

关 键 词：半导体激光器 积分球 铟稼砷探测器 水分检测仪 

分 类 号：TS411[农业科学—烟草工业]