[Study of on-line CCD spectrum data acquisition system based on CPLD].
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.
Li
Gang
G
College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China. ligang59@tju.edu.cn
Wang
Yang
Y
Li
Hai-lan
HL
Lin
Ling
L