Research And Implementation Of FC-AE-1553 Protocol Bus Based On PON Structure

With the rapid development of avionics systems,the video and audio quality of devices is sharply increasing,the demand for high-bandwidth data is increasingly obvious,and the demand for low-latency data such as sensor controllers is becoming higher.The transmission performance of aerospace electronic bus system brought by traditional MILSTD-1553 B protocol needs to upgrade.With the development of optical fiber communication technology,optical communication bus technology in this field has shown tremendous prospects and functional advantages.FC-AE-1553 protocol is the mapping of MIL-STD-1553 B protocol.This paper combines MIL-STD-1553 B protocol and fibre channel FC(fibre The characteristics and functions of channel,FC)protocol and PON protocol aim to put forward a bus protocol transmission mode,which combines the transmission characteristics of passive optical network,such as high bandwidth,low delay and antiinterference,and has good construction cost and maintenance cost,which can reduce the aircraft load and energy consumption of avionics bus.This kind of bus protocol can greatly solve the limitation of traditional bus protocol.It can be said to be a light and efficient bus protocol,which can make 1553 B standard electronic equipment smoothly transition to the current bus system.The main contents and improvements of this paper are as follows:1.This paper summarizes the research status of MIL-STD-1553 B,FC-AE-1553 protocol and PON topology,analyzes the advantages and characteristics,and puts forward the FC-AE-1553 protocol transmission mode based on PON structure.The method and standard of bus transmission are described in detail to ensure the reliability of protocol communication.At the same time,the transmission mode,data format and other specific communication standards in real use scenarios are determined.The feasibility of the protocol is proved by the simulation test of each module on the platform such as Modelsim,and the test on the board of the designed and manufactured hardware platform.2.The corresponding codec module and burst data synchronization module are designed and developed according to the system requirements.The encoder&decoder module and the fast serial data phase recovery module BCDR can realize the function correctly.With this module,the synchronization time can be less than 1?s.3.Designing a FPGA mini network terminal processing board for bus protocol to realize network control and data collection and statistics.The processing board is divided into core board and expansion board,which are connected by standard connectors.The size of core board is 5.5cmx4.5cm,which can be used in aerospace applications with limited space.With the help of the PCIe interface channel of the expansion board,it can communicate with the client application.After the completion of the board,the function verification is realized.This paper provides the theoretical basis and experimental experience for the test and application of this new protocol.With continuous improvement and algorithm optimization,it can contribute to the popularization of PON structure in the aerospace field.