基于线阵CCD的高速光谱信息采集系统的研究

针对爆炸时刻光谱信息量大、存在时间短的特点,设计了一款基于线阵CCD高速光谱信息采集系统.系统以FPGA作为主控芯片不仅为CCD提供工作时序,同时还控制着信号调理、模数转换和光谱信息的存储与传输.最后,通过USB串行总线将采集到的光谱信息传输至上位机进行后续处理.结果表明,利用该系统可在一次爆炸过程的100ns时间内完成四个时刻爆轰温度的测量,具有较高的测量精度和速度,可实现爆轰过程中高速动态光谱信息的采集与存储,并可应用于其它瞬态信息的获取领域.

Spectrum Data Acquisition System Based on Linear CCD

Ultra-high-speed dynamic spectrum of the various transient detection has become the main means of access to information.However,due to the the characteristics of high transmission and 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.A CCD data acquisition system based on FPGA is designed.The whole system is controlled by FPGA,which is used to supply CCD timing and controls signal disposal,storage and transmission of data.Finally the data is transferred by USB bus into computer to do further processing to get a complete explosion spectral information.With this system four time temperatures during 100 ns detonation can be measured,and the results show that the system has a higher measurement accuracy and speed,which can be achieved high-speed spectral information collection and storage during the explosion.It also can be applied to other transient information acquisition.