基于USB2.0的全谱段光纤光谱仪测控通讯系统的实现  

Implementation of High Speed Spectral Instrument Based on USB2.0 Protocol

作　　者：张熙康[1] 郑志忠[2] 修连存[1,2] 段红梅[1] 

机构地区：[1]中国地质大学,北京100083 [2]南京地质矿产研究所,南京210016

出　　处：《现代科学仪器》2009年第1期12-14,共3页Modern Scientific Instruments

基　　金：中国地质调查局计划项目(编号1212010660604)。

摘　　要：论述了在研制光谱覆盖范围200-2500 nm的全谱段光纤光谱仪过程中采用的数据采集与通讯方案,使用CPLD器件实现了对三路线阵光电器件时序逻辑信号的发生与驱动,采用14位高速AD将探测器的光谱模拟量信号进行数字化转换。系统是基于CY7C68013A为核心的USB2.0的测控通讯系统,对器件的固件程序编制进行了详细介绍,并实现了光谱数据在Slave FIFO模式下高速块传输。测试结果表明,仪器通讯系统稳定可靠,获得了理想的全谱段光谱数据。This article illustrates the data sampling and communicating method which is applied to the full spectrum fiber spectral instrument with measurable spectrum ranging from 200 to 2500 nm. CPLD generates and drives three temporal logic signals of the line array photoelectrical instrument, and 14 bits high speed AD converter converts analog signals of the spectrum detector into digital ones. With CY7C68013A serving as the core in this measure and control system based on USB2.0, programming of firmware is given in detail and spectrum data is transferred in bulks at a high speed in the Slave FIFO mode. Test results demonstrated that this communication system is both stable and credible, and the expected full spectrum data is gained.

关 键 词：光纤光谱仪 USB2.0 线阵光电传感器 

分 类 号：TH744.1[机械工程—光学工程]