矿用多路信号同步传输干扰问题的研究  

Study on Interference Problems of Mine Multi Way Signal Synchro Transmission

作　　者：肖栋[1] 姜琛[1] 马衍坤[1] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221008

出　　处：《煤炭科学技术》2010年第11期90-92,共3页Coal Science and Technology

基　　金：国家自然科学基金资助项目(40874070);国家重点基础研究发展计划(973计划)资助项目(2005cb221505);"十一五"国家科技支撑计划资助项目(2007BAK29B01);教育部新世纪优秀人才支持计划资助项目(NCET-06-0477)

摘　　要：针对矿用线缆感抗特征较强,长距离传输容易造成信号失真等现象,设计了新型同轴射频电缆,综合考虑系统布置中所允许的感抗值和容抗值,以及线缆传输中存在的阻抗匹配问题,可以充分解决当前多路信号失真的问题,实现煤矿安全监测的准确性与可靠度。通过试验证明,随着线路增长,感抗作用下导致的干扰问题越明显;当负载阻抗与线缆的特征阻抗匹配时,可避免波的干涉和反射。According to the signal distortion and other phenomena caused by the high inductive impedance features of the mine electric cables and the long distance transmission,a new coaxial radio-frequency cable was designed in order to comprehensively consider the allowed impedance value and the capacitive reactance value in the system layout,to consider the impedance match problems existed in the cable transmission,to fully solve the problems of the present multi way signal distortion and to have an accuracy and reliability of the mine safety monitoring and measuring.The experiment showed that with the cable line increased,the interference problems occurred under the inductive impedance function would be more obvious and when the loading impedance and the cable feature impedance could be matched,the inference and reflection of the waves could be avoided.

关 键 词：矿山 信号 干扰 同步传输 阻抗匹配 

分 类 号：TD67[矿业工程—矿山机电]