摘要
针对低频磁感应技术条件下的谐变磁偶源在地下信道中的传输特殊性,研究了低频磁感应技术在土壤中传输的影响因素,并建立模型,基于各影响因素的变化对信道模型的影响从而确定磁感应强度的变化,在此基础上分析低频频率的变化引起路径损耗的变化趋势,建立信号传输过程中土壤各参数随距离的路径损耗变化。然后用仿真实验进行验证,利用地下发送线圈发送30 kHz信号,通过与接收线圈进行耦合,与建立的模型进行对比,验证了系统理论信道模型的可行性。
In view of the transmission particularity of harmonic magnetic couple source in underground channel under the condition of low frequency magnetic induction technology,the influencing factors of low frequency magnetic induction technology transmission in soil are studied,and the model is established.Based on the influence of the changes of various influencing factors on the channel model,the change of magnetic induction intensity is determined,and the change of path loss caused by the change of low frequency is analyzed.The soil parameters change with the path loss of distance in the process of signal transmission.Then the simulation experiment is used to verify the feasibility of the theoretical channel model of the system,which uses the underground transmitting coil to send 30 kHz signal,through coupling with the receiving coil,and comparing with the established model.
作者
雷登峰
雷阳琦
田源
李开放
刘洲洲
LEI Dengfeng;LEI Yangqi;TIAN Yuan;LI Kaifang;LIU Zhouzhou(School of Electronic Engineering,Xi’an Aeronautical University,Xi’an 710077,China;School of Chinese and French Engineers,Beijing University of Aeronautics and Astronautics,Beijing 100191,China;School of Electronic Information,Xi’an Shiyou University,Xi’an 710065,China;School of Electronic Information,Northwestern Polytechnical University,Xi’an 710072,China)
出处
《电子设计工程》
2021年第8期5-8,共4页
Electronic Design Engineering
基金
国家自然科学基金(61871313)
陕西省重点研发计划(2020GY-084)。
关键词
无线地下传感网
低频磁感应
信道模型
路径损耗
wireless underground sensor networks
low frequency magnetic induction
channel model
path loss
