Design and Implementation of Multiple Signal Demodulation Device Based on FPGA

Abstract

Abstract To meet the requirements of other aircraft flight test tasks for multiple types of engines and achieve a device matching multiple engine flight test tasks, a design scheme of a multi-signal demodulation device based on FPGA is proposed. This demodulation device collects and demodulates data such as throttle lever position signal, altitude speed, and switch value. It converts and analyzes the data in series and parallel through FPGA and forwards it to various interfaces such as the EEC interface and airborne testing system. According to the interface protocol requirements, it is converted into signals of types such as RS422, ARINC429, and Ethernet. This multi-signal demodulation device has broad application prospects.