Development Of GJB1188A Data Recorder Based On DSP

In order to improve the versatility of aircraft/store systems, the aircraft/store electrical interfaces standard GJB1188A was formulated by China. In this dissertation, a data recorder is designed to capture and record GJB1188A data. It can supply debug tool for aircraft/store systems and has a very important meaning for research and application.After studying GJB1188A interfaces standard, a general design based on DSP + FPGA is proposed, and then a hardware design and a software design are carried out according to the related specifications and requirements.In the hardware design, according to the general program, DSP, FPGA, digital video encoder/decoders, 1553B bus transceiver, network transceiver and some other devices are selected; According to the system requirements, the DSP and peripheral interface circuits was designed; the circuits of video capture and display, 1553B data capture, network transmission and hard disk storage are designed by using the rich resources of DM642. At the same time, the logic of 1553B data capture interface and digital I/O capture interface are implemented in FPGA.In the software design, the main program of the system is implemented based on real-time operating system DSP/BIOS and software reference frame RF5. The video process program is developed based on DDK (Driver Develop's Kit). In order to make hard disk storage and network transmission function work efficiently and reliably, the compressing and encoding provided by TI Corporation is used to process video data. The network transmission program is developed by using TCP protocol based on NDK (Network Develop's Kit). At the same time, the program of 1553B data capture, digital I/O capture and hard disk storage is also implemented.The testing result shows that the system works properly and meets the requirements of design.