基于磁感应共振的BPSK通信技术的研究

Research on BPSK Communication Technology Based on Magnetic Induction Resonance

针对水声、电磁波、激光技术在水下通信时受到水的吸收和散射,水下物体和生物对声波传播产生干扰和噪声,水的电导率、水分子和悬浮物的散射和吸收等影响,无法满足水下编队实时高速通信的问题,论文提出了一种基于磁感应进行通信的方式,信息承载于收发天线线圈之间的耦合互感磁场中,通过变化的磁场完成信息传输。在发送端,调制信号引起发送线圈中电流的变化,根据电磁感应原理,变化的电流将引起变化的磁场;在接收端,发送端引起的变化的磁场会改变通过接收线圈的磁通量,进而引起感应电流,信息最终被传输到接收端。实测结果表明:所提的方法在通信中,能够实现基本的通信。所提的方法仿真结果误码率0.05%。

In view of the problems that underwater acoustic,electromagnetic wave and laser technology can't meet the re⁃al-time high-speed communication of underwater formation due to the absorption and scattering of water,the interference and noise of acoustic wave propagation caused by underwater objects and organisms,the conductivity of water,and the scattering and absorp⁃tion of water molecules and suspended objects,a communication mode based on magnetic induction is proposed.The information is carried in the coupling magnetic field between the receiving and receiving antenna coils,and the information is transmitted through the changing magnetic field.At the sending end,the modulating signal causes the change of current in the sending coil.According to the principle of electromagnetic induction,the change of current will cause the change of magnetic field.At the receiving end,the changing magnetic field caused by the sending end changes the magnetic flux through the receiving coil,causing an induced cur⁃rent to which the information is eventually transmitted.The experimental results show that the proposed method can realize basic communication in communication.The proposed method results in a bit error rate of 0.05%.