Study of On-Line CCD Spectrum Data Acquisition System Based on CPLD
LI Gang1,WANG Yang1,2,LI Hai-lan1,LIN Ling1
1. College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China 2. Liaoning Technical University, Fuxin 123000, China
Abstract：The non-invasive detection blood component has being attracted significant interest in biomedical domain, where the method of near-IR spectroscopy is special. And the dynamic spectrum method can eliminate the main interference of the individual discrepancy and measure conditions. However, due to the requirement of excellent amplitude accuracy and high temporal resolution in spectrum data acquisition system, the CCD must have real time output, the data is large, and a high speed acquisition system is required. In the present paper a CCD data acquisition system based on CPLD is designed. The whole system is controlled by CPLD, which is used to supply CCD timing and controls signal disposal, transmission, sample rate and storage and transmission of data. The system structure is simplified and the speed is improved, and the system meets the requirements of time resolution.
李刚1,王焱1,2,李海兰1,林凌1 . 基于CPLD的线阵CCD光谱检测数据采集系统的研究[J]. 光谱学与光谱分析, 2007, 27(10): 1905-1909.
LI Gang1,WANG Yang1,2,LI Hai-lan1,LIN Ling1. Study of On-Line CCD Spectrum Data Acquisition System Based on CPLD. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(10): 1905-1909.
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