Image Transmission Control System Based on FPGA+SDRAM
In order to solve the problem of data loss caused by the different transmission rates between each module in the high frame rate image acquisition system,FPGA+SDRAM is used to realize the image transmission scheme.In this paper,the grat-ing diffraction effect is used to measure the characteristic parameters such as azimuth,pitch angle and wavelength of the incident la-ser as the background,and a small hardware architecture composed of CMOS detector,FPGA,SDRAM,USB,etc.,and on this ba-sis,the SDRAM control mode is optimized.In the application of laser high-alarm system,FPGA+SDRAM is used to realize hard-ware storage,USB interface is used to transmit data to the host computer,Matlab is used to solve the coordinates of each point on the XY axis,and finally the practicability of the system is verified by calculating the characteristic parameters such as laser wave-length azimuth angle through optical knowledge.In this test,a laser in the 850 nm band is used for detection,and the wavelength measurement accuracy is within 9 nm.
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