Design Of The FPA Data Acquisition System Based On USB2.0

With the development of infrared imaging technology, it is widely used in civilian. Because some defects affect the image quality, it is important to research the detector characteristics of these defects for improving the image quality. The infrared detector is the key to this technology. The data extraction from the infrared detectors is very important both in the theoretical researching to characteristics of the infrared detectors and the needs of data exchanging between the video system and the computer. The designing is based on this point. The high-speed data acquisition system is based on the USB2.0 EZ-USB FX2LP, using the GPIF active mode.The first,The article introduces the sources of the subject and the significance. With the need of this design, the article also introduces the USB2.0 Protocol and the USB2.0 working process. Then it gives a detailed description on the chip of CY7C68013A-56,especially in the two system working modes. After that, it also gives a systemic introduction on hardware design, firmware program development and the application development on PC. In particular, the paper introduces how to design the firmware program development based on the GPIF Mode and the Application development. The article gives a detail introduction on the design considerations. Finally, it summarizes the subject shortage and some prospects for future research directions.By testing on the test module, it proves that the transmission rate achieves 32MByes/s. And by collection data from infrared detectors, the system can get right image. All of that prove the system has good stability, the ability of the normal high-speed and reliable video data collection system, and strong portability. It can be widely applied to other digital signal acquisition system.