Design And Research Of Optical Fiber Type Long-distance High-speed Data Transmission Method

With the rapid development of electronic technology and the wide application of data acquisition technology in the fields of radar,communications,aerospace measurement,etc.,real-time acquisition,transmission and processing of field data have become more and more important.In the system test,there are many measurement parameters involved in the field test,and the test accuracy is getting higher and higher.A large number of data needs to be processed and analyzed in time.However,due to the harsh field test environment and high risk,usually the test equipment and test personnel are not at the same test site,testers operate the test equipment and analyze real-time data over long distances.In this context,research on long-distance transmission of high-speed data is very important.Some commonly used long-distance data transmission methods are relatively slow,and the distance is not particularly long.It has been slowly unable to meet the requirements for high-speed data transmission.This article proposes based on the existing long-distance high-speed data transmission methods.A new method is proposed,namely the optical fiber type long-distance high-speed data transmission method.Optical fiber is currently a relatively widely used transmission medium in high-speed signal transmission,and it can still maintain a higher transmission frequency when the transmission distance is long.Based on the excellent transmission performance of optical fiber,this article uses optical fiber as the signal transmission medium.On the other hand,as the amount of data that needs to be analyzed in the measurement system becomes larger and larger,higher and higher requirements are put forward for the speed of the transmission interface.This article uses a high-speed serial interface GTP communication method for data High-speed transmission.Aiming at the transmission method proposed above,this paper builds a test system for testing.The system consists of three parts,the high-speed data acquisition part.On the one hand,the high-speed AD acquisition chip is used to collect the analog signals generated in the external sensors at high speed,and the image sensor is used to collect the images on the other side.The acquisition part is equivalent to the analog signal at the same time.High-speed acquisition synchronized with digital signals.This part is mainly used to simulate the measurement data in the measurement system.The data transmission part,this part is mainly to realize the long-distance high-speed data transmission method,through the high-speed serial transmission interface,the data is sent to the main control terminal through the long-distance optical fiber.The other part is the design of data buffering.After long-distance transmission,data needs to be buffered and then transmitted to the upper computer for analysis and processing.Finally completed the circuit design,the software logic control programming,after testing,the system completed the expected function.