电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2009年
8期
63-65
,共3页
时域脉冲回波(TDR)%断点测试%ADSL线缆%FPGA%STC12C5410AD
時域脈遲迴波(TDR)%斷點測試%ADSL線纜%FPGA%STC12C5410AD
시역맥충회파(TDR)%단점측시%ADSL선람%FPGA%STC12C5410AD
time domain reflection (TDR)%breakpoint test%ADSL cable%FPGA%STC12C5410AD
介绍一种基于时域脉冲回波(TDR)原理的ADSL线缆断点测试系统.该系统设计以STC单片机为控制核心.以FPGA为测试主体发射接收脉冲,采集脉冲往返线缆时间,实现ADSL线缆断点位置的测量.在分析现有测试产品的基础上,首先阐述设计理论,然后介绍系统总体设计框图、硬件实现、软件测试流程以及系统实际测试结果.实验结果表明该测试仪能够快速准确测试出断点位置,并且只需适当剪切,便可作为内嵌模块应用于其他仪表.
介紹一種基于時域脈遲迴波(TDR)原理的ADSL線纜斷點測試繫統.該繫統設計以STC單片機為控製覈心.以FPGA為測試主體髮射接收脈遲,採集脈遲往返線纜時間,實現ADSL線纜斷點位置的測量.在分析現有測試產品的基礎上,首先闡述設計理論,然後介紹繫統總體設計框圖、硬件實現、軟件測試流程以及繫統實際測試結果.實驗結果錶明該測試儀能夠快速準確測試齣斷點位置,併且隻需適噹剪切,便可作為內嵌模塊應用于其他儀錶.
개소일충기우시역맥충회파(TDR)원리적ADSL선람단점측시계통.해계통설계이STC단편궤위공제핵심.이FPGA위측시주체발사접수맥충,채집맥충왕반선람시간,실현ADSL선람단점위치적측량.재분석현유측시산품적기출상,수선천술설계이론,연후개소계통총체설계광도、경건실현、연건측시류정이급계통실제측시결과.실험결과표명해측시의능구쾌속준학측시출단점위치,병차지수괄당전절,편가작위내감모괴응용우기타의표.
The testing system for measuring ADSL cable breakpoint based on TDR (time domain reflection) is introduced. The system uses STC-MCU as a control core,and FPCA as test main body to transmit and receive pulse,and collects the trip time of pulse in ADSL cable,so that the system realizes the ADSL cable breakpoint measurement.On the basis of analyzing the actuality of the instrument products,the main design theory is illuminated,and then the system design diagram,the hardware implementation,the software test flow and the actual test results are introduced.The experiments show that the tester is able to test breakpoint quickly and accurately. Only sheared appropriately,the system design is used in other instruments as an embedded module.
