基于CPLD和嵌入式微机技术的傅立叶变换红外光谱仪的电气系统

Modification of fourier transform infrared spectrometer electrical system by CPLD and USB technique combining with embedded computer

本文利用嵌入式微机(PC104),结合CPLD技术、USB技术对傅立叶变换红外光谱仪的电气系统进行了改造。实现了CPU及旧器件的更新换代,用CPLD芯片集成了大量逻辑电路和计数器,这样,既保证了仪器的正常生产、缩小了电路板,又简化了调试步骤,用USB的通讯方式取代了老的LAN的通讯方式。仪器的各项技术指标达到或超过了原光谱仪的水平。

This text using embedded computer, combining with CPLD and USB technique have improved the spectrometer electrical system. Old CPU and chips were replaced by new mod- els, a large number of logic circuits and counters were integrated in CPLD chips, So that the normal production of the spectrometer is guaranted, and the volume of the electric box is reduced, as well as the debugging steps are simplified. Old LAN communication pattern was replaced by USB. The results showed that all of the features of the new spectrometer are same as or better than the old one＇s. It is completely a new spectrometer with our technique property. The some cost performance of it is higher than inward instruments.