Data Transmission Between Multiple Devices By Distribution Line Carrier Communication Technology

With the rapid development of aerospace technology,how to improve the payload of the aircraft has become an important research topic.DC power distribution lines,as the power supply cable for each device,has been set up a cable channel between the devices.At the same time,if the DC distribution line can also be used for data communication,we can greatly reduce the cost of data cable,and improve the actual load of the spacecraft effectively.Thus,we propose an experimental system for data exchange through the DC power distribution line.In this thesis,we discuss the distribution line carrier communication technology,and concentrate on the hardware circuit of the DC distribution line carrier communication system,including ARM processor,DLC coupling module,DLC modem module,Ethernet interface,serial interface modules and so on.Besides,we put forward the software flow of the system,and design the software about ARM processor in detail,including serial command processing module and DLC command processing module.In addition,we also designed a PC interface of the DLC communication system.Eventually we have implemented an experimental system for data exchange through the distribution line.As the test result shows,the experimental system we have designed can meet the design requirements.