摘要
为提高LVDS信号在远距离传输系统中的实时性和可靠性,设计了一种LVDS长线传输系统,信号在传输过程中采用了新型8B/10B编解码的编码方式。该系统的核心控制器件采用FPGA,利用LVDS编解码芯片完成编码部分,在硬件电路中加入均衡器和驱动器对LVDS信号进行补偿,降低信号在长线传输中的损耗。在信号的发送接收中加入8B/10B编解码方式,可以使数据在传输中的直流平衡,实现数据可以在远距离传输中以高速、误码率极低的方式去传输,满足传输要求的可靠性。经过系统的验证之后,LVDS信号在远距离传输时可以在240 m的传输介质中传输,信号的传输速率为500 Mbit/s,并且误码率非常低,系统工作稳定,符合要求。
In order to improve the real-time and reliability of LVDS signal in long distance transmission, a LVDS long line transmission system was designed.The new 8B/10B encoding and decoding method was adopted in the process of signal transmission.This method used FPGA as the core control device, used LVDS codec chip to complete the coding part, equalizer and driver were added in hardware circuit to compensate LVDS signal, and signal loss in long line transmission was reduced.Adding 8B/10B encoding and decoding mode in the signal sending and receiving can make the DC balance of data in transmission, and the data can be transmitted in the way of high speed and low bit error rate in long-distance transmission, so as to meet the reliability of transmission requirements.After experimental verification, LVDS serial data can be transmitted at a transmission rate of 500 Mbit/s in 240 m transmission medium in the long-distance transmission process, and there is low bit error rate, the system works stably and meets the requirements.
作者
尚辰阳
任勇峰
SHANG Chen-yang;REN Yong-feng(North University of China,Key Laboratory of Instrumentation Science and Dynamic Measurement of Ministry of Education,Science and Technology on Electronic Test and Measurement Laboratory,Taiyuan 030051,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2022年第12期67-72,共6页
Instrument Technique and Sensor
