Design of Universal Digital Flight Control Bus Acquisition Unit

The data format of the digital flight control bus (FTI) output by the flight control computer of different models is not standardized, and it does not match the data format of the general acquisition system, which makes it impossible to collect it directly. The existing flight controller collector is large in size, high in cost, and complex in-system programming and maintenance, which does not meet the strict requirements of the airborne environment for the size, weight, and maintenance of the test equipment. In this paper, we design a general-purpose integrated and modular FTI signal acquisition scheme that converts FTI signals into standard signals for output to other test equipment. This solution improves the flexibility and maintainability of test equipment, reduces test costs, and provides design ideas for the integration and modularization of other test equipment in the future.