Abstract:This paper introduces the application and research of programmable logic device (FPGA) and digital signal processor (DSP) in aero-engine parameter acquisition system. The engine parameter acquisition system is designed based on EP4CE115F23I7 programmable logic device and TMS320VC5416 digital signal processor. The hardware of the engine parameter acquisition system is decomposed into AD signal acquisition module, communication module, discrete quantity control module, data processing module and the parameter record module. FPGA software uses a wide range of VERILOG language, DSP software using C language and assembly language mixed programming. The engine parameter acquisition system is successfully applied to a certain type of helicopter, and the effect is very good.