摘要
当矿井下粉尘密度较大,瓦斯浓度较高的情况下,射频人员检测信号受到强干扰,会发生较大程度的回波衰减,造成井下人员的定位不够准确。为此,本文提出射频回波信号强度补偿的井下人员精确定位系统设计方法。通过判断射频信号回波信号的强度,计算反馈的被困人员区域射频衰减系数的强弱,并根据反馈射频信号强度调整信号的补偿量,对射频回波信号衰减的情况进行补偿,保证在强干扰下的人员定位准确性。实验表明,本文方法能够在强干扰下增强井下人员定位的准确性,准确定位被困人员的位置。
When mine dust density is bigger,higher gas concentration,rf personnel by strong interference detection signal,in great degree will echo attenuation,causing the positioning of the miners was not accurate enough.Therefore put forward the echo signal strength rf compensation miners accurate location algorithm,by judging the rf signal echo signal strength,calculation of feedback trapped personnel area radio frequency attenuation coefficient,strong or weak,and according to the feedback signal strength rf signal adjustment of the compensation amount of rf echo signal attenuation to compensate,ensure strong interference in the personnel positioning accuracy.The experiment shows that the method can improve the strong interference positioning accuracy of miners,accurate positioning trapped workers position.
出处
《科技通报》
北大核心
2012年第10期110-112,共3页
Bulletin of Science and Technology
关键词
射频信号
回波强度
强干扰补偿
rf signal
echo intensity
strong interference compensation
