多传感器系统无线电能传输装置设计与分析

Design and analysis of wireless power transmission device for multi-sensor system

针对石油化工等恶劣环境下传感器有线供电的安全隐患和维护困难,对无线电能传输在多传感器系统的应用进行研究,分析了磁耦合谐振无线电能传输的物理机理和数学模型,得出耦合参数对系统传输功率效率的影响;在ANSYS有限元软件中,建立了单发射线圈、三接收线圈的耦合机构模型,并进行对横向偏移、纵向偏移、激励频率的参数化扫描,得出线圈间相对位置变化对耦合参数的影响、激励频率变化对传输效率的影响;设计了单发射端三接收端的无线电能传输实验平台,实现了对SENSOR-PUCK传感器的多负载无线供电。实验结果证明了所设计多传感器无线供电系统的可行性,对无线电能传输技术在传感器领域的实际应用具有指导作用。

In order to solve the security and maintenance problem of the sensors in harsh petrochemical environment,application of wireless power transmission in multi-sensor system is researched,physical mechanism and mathematical model for wireless power transmission are analyzed,and influence of coupling parameters on power and efficiency of system transmission is obtained.In ANSYS finite element software,model for wireless powered sensors with single transmitter coil and triple receiving coils is established.A parametric sweep of Lateral migration,vertical migration,excitation frequency are obtained,and the influence of relative position variation between coils on system coupling parameters and change of extication frequency on power transmission efficiency are derived.The wireless power transmission experimental platform with single transmitter and triple receivers is designed,which realizes the wireless power supply to SENSOR-PUCK.The experimental results verify feasibility of the designed wireless powered multi-sensor system,which has a guiding effect on the practical application of wireless power transmission technology in sensor field.