The Technology Research Of USB Interface On Infrared Images Based On FPGAs

Field programmable logic device FPGA is widely used in satellite communications, industrial control, consumer electronics, aerospace and military fields with its powerful data processing capabilities. Its flexibility and scalability design make it gradually becomes the core in each application system.According to the practical applications of infrared imaging systems in North China University of Technology, this topic "The technology research of USB interface on infrared images based on FPGAs" makes use of the powerful parallel data processing capabilities of FPGA, and combines with the latest generation USB3.0controller EZ-USB FX3, designs a ultra high-speed USB3.0data transfer interface for it, and derives an universal high-speed data acquisition and transmission interface.To make sure the stability of data transmission in interface system, the design takes a high-performance, high-capacity DDR2SDRAM as a data buffer, which is widespread used currently. So it can deal with a sudden flow of data effectively, and set aside a large buffer space for subsequent data processing.In this paper, after an in-depth study in the principles and performance of the related devices, according to their specific timing relationships, and then determines the basic framework of the interface system. The design takes Altera’s EP3C40F484C8N FPGA as the master chip, and uses Cypress’s the latest generation USB3.0controller chip EZ-USB FX3as the slave data transmission chip. And Micron’s DDR2SDRAM memory particles chip MT47H64M16is used as a large-capacity data buffer in this interface system. The corresponding application fpr the interface system is created and realized on the PC side, which completes data transmission and data processing with the data interface system.The topic mainly completes the entire interface system design, components selection, schematic drawing, PCB layout and plate, chip soldering, circuit board testing, code writting and debugging, produce and transmission of the color bar test signal data, application’s creation and function implementation, and, at the final, completes the data-speed test and test video data’s receiving and real time display on the entire system.