Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《COAL MINE AUTOMATION》 2000-01
Add to Favorite Get Latest Update

Multi channel Signal Telemetry System for Coal Mines with Carrier Wave Transmitted by Telephone cable

ZHONG Daochang (Shandong Mining Institute, Shangdong Tai'an 271019)  
Here introduced is the circuit composition of coal mine multi channel signal telemetry system with carrier wave transmitted through telephone line and precise V/F conversion circuit designed with LM331 and TL082. Problems encountered in system commissioning and execution and the measures adopted are analyzed.
【CateGory Index】: TD655/676
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved