基于DataSocket技术传输图像的速率研究  

The speed research of transfering images through DataSocket

作　　者：白金鹏[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《电子测量技术》2015年第12期49-53,共5页Electronic Measurement Technology

摘　　要：DataSocket是LabVIEW中的一种实时传输技术,具有传输速率快、编程简单、支持多客户端等优点,能够用于图像传输。对DataSocket传输不同图像的速率进行研究,设计图像传输程序,分别运行于服务器端PC、客户端PC,由于客户端接收一帧图像时间长于服务器端发送一帧图像的时间,服务器端在发送图像后需要延时若干ms等耐客户端响应,延时越短则传输速率越快,每秒可传输的帧数越多,测得发送时间和最短延时后可经过换算得到不同图像在该系统中的传输速率。研究结果表明,不同格式图像使用DataSocket传输的速率相差较大,bmp格式经压缩后在300M局域网内最高可达31MB/s;同种格式但不同大小的图像传输速率相近,且较小图像传输速率略快。DataSocket is a kind of real-time transfer technology in LabVIEW,which has some advantages such as fast speed,easy-to-program,supporting multiclient,and can be used to transfer images.A set of LabVIEW programs including DataSocket were designed to research the speed of transfering images through DataSocket from server PC to client PC.Since receiving one image took more time than sending one,server must delay several miliseconds after sending out one image which meant that the shorter delay time,the faster tansfer speed was.Once the shortest delay was recorded,the highest transfer speed could be figured out.According to the result,transfer speed difference is related to image format,the fastest one can reach 31 MB/s after compressing within 300 M bandwidth local area network;Images with the same format but different sizes have similar transfer speed and smaller ones＇ is a liitle faster than big ones＇.

关 键 词：DATASOCKET 图像传输 速率 LABVIEW 

分 类 号：TP919.8[自动化与计算机技术]