井下电视系统数据采集及压缩  

The Data Acquisition and Compression of Downhole Video (DHV) System

作　　者：黄伟才[1] 何川[1] 蔡志权[1] 

机构地区：[1]北京航空航天大学

出　　处：《电子测量技术》2001年第1期40-41,共2页Electronic Measurement Technology

摘　　要：提出了一种基于DSP的井下电视(DHV)视频采集系统及数据压缩方法,适合较高温度下的工作环境。首先结合井下电视的实际工作环境,讨论了在设计时需要考虑的一些问题,如高温、传输信道窄等。然后介绍了系统硬件设计组成框图、压缩方案的确定及设计流程。This paper develops a DSP - based Downhole Video (DHV) acquisition system and the approach to compress the data, which is suitable in high temperature conditions. Several vital problems such as high temperature, narrow band of the transmission channel in the operation environments of Downhole Video (DHV) system are discussed at first. Hardware configuration is presented, a method to choose the proper compression technique is showed, and the compression flow chart is given.

关 键 词：DHV 视频采集 Huffman变换 井下电视系统 石油测井 数据压缩 数据采集 

分 类 号：TN949.22[电子电信—信号与信息处理] TN941[电子电信—信息与通信工程]