Design Of Optical Fiber Communication System Based On CPCI Bus

In the monitoring system of the production process, along with the increase of large amount of data, real-time high-speed data acquisition and remote transmission data requirements, it has brought great challenges to modern communications. In the long distance communication, the development of optical fiber communication technologies has been more and more widely used. Traditional single-ended interconnect and peripheral interconnect bus cannot meet the demand for high-speed communication and the transmission of large amounts of data, due to the impact of noise and the shortcomings of interface compatibility, scalability, and reliability. The appearance of CPCI industrial bus protocol with advantages of hot-swappable, high reliability and earthquake-proof, strong ventilation, has solved the problem of industrial bus interfaces. It can more reliably steady run in conditions of harsh environments.Issue for the shortcomings of traditional communication means as well as bus interface, in order to realize the requirement transmission rate of industrial process monitoring and application in real time for the purpose of debugging, has used optical fiber communication and industry-standard CPCI bus interface, designing a method for optical data transmission, as well as optical interface board based on CPCI bus card. Main jobs are as follows:(1) The system uses a SFP fiber module realizing signal conversion, completing fiber-optic data transmission. For wiring requirements of the circuit board in high-speed serial differential signaling, a reasonable routing, can reduce the impact of errors generated in the data transmission by the PCB Board, improving system reliability and stability.(2) For the requirements of laboratory and industrial field application, design and build the hardware test platform for optical fiber communication systems, and design CPCI bus based on PCI9054 to communicate with the IPC, IPC application captures signals of data collected to meet the requirements of real-time process monitoring.(3) Use FPGA of built-in high-speed serial transceiver for hardware realization of logic functions. Design the optical fiber communication system using the asynchronous FIFO based on gray code counter and Aurora protocol by custom protocol IP core, achieving full duplex high-speed data communication. Based on modular thinking, it can be applied to optical fiber communication at different data rates with portability.(4) Based on completed optical fiber communication scheme and Board-level systems, for CPCI bus interface functions, design DMA data read/write function for test validation. Embedded high-speed transceiver as well as optical fiber communication logic functions are simulated, and the system was designed to test the send and receive with each transceiver, testing stability and error rate information for fiber channel, laying the Foundation for industrial application.