关键词: 微型光谱仪, 线阵CCD, 复杂可编程逻辑器件, 单片机, 数据采集

Abstract:

In order to meet the practical industry application requirement of environmental pollution test and facilitate the integration of system and reduce the cost, a micro-spectrometer based on linear CCD array is developed. The design of optical and electronics is introduced. A Czerny-Turner optical structure and linear CCD as light detection device are used in the system. In the electronics design, an efficient and flexible data acquisition is achieved by combining intelligent control of microcontroller and accurate timing, programmable of complex programmable logic device. The performance test of micro spectrometer shows that its spectral coverage is between 350 nm and 780 nm, its spectral resolution comes to 0.6 nm and the signal to noise ratio is close to 500.

Key words: micro-spectrometer, linear CCD, complex programmable logic device, microcontroller, data acquisition