摘要
针对飞行器内部设备间对远距离通信的需求以及通信电缆由多级低频连接器相连的特点,设计了一种基于LVDS技术的双绞线数据传输系统。分析了阻抗不连续系统存在的隐患,对不同频率和传输距离下的LVDS信号的传输衰减做了对比研究,并对高频LVDS信号长距离传输使用均衡器做了相关测试与理论计算。最终验证了传输方案的可行性,确保了176.947 2 Mb/s波特率的数据流能可靠地传输104 m。
For the requirements that devices in aircraft need long distance communication and cables are connected with lots of low-frequency connectors, the twisted pair data transmission system based on LVDS is presented.The system with discontinuous line impedance has much uncertain element.Some contrast research on the transmission attenuation of an LVDS signal under differ- ent frequency and transmission distance is given. The paper does some related test and theoretical calculation for the long distance transmission of the high frequency LVDS signal with equalizer. Finally the feasibility of the scheme is verified. The system has real- ized reliably transmitting data flow at 176 Mb/s to the distance of 104 m.
出处
《电子技术应用》
北大核心
2014年第6期49-51,共3页
Application of Electronic Technique
关键词
LVDS
双绞线
数据传输
衰减
通信
LVDS
twisted pair
data transmission
attenuation
communication
作者简介
瞿林,男,1989年生,硕士研究生,主要研究方向:电路与系统、高速数据采集。
陈海亮,男,1969年生,高级工程师,主要研究方向:数据采集.
甄国涌,男,1971年生,副教授,硕士生导师,主要研究方向:测试系统集成技术与应用软件技术。