Design of Power Supply for Three Core Cable Wireless Monitoring Network Based on Space Magnetic Field Energy Harvesting
摘要
In order to ensure the normal operation of power cable wireless monitoring network, it is first necessary to solve the energy supply problem. In response to the problem of traditional power supply failure caused by uneven spatial magnetic field distribution in three core cable, this paper proposes a calculation model for spatial magnetic field distribution in three core cable based on the idea of spatial magnetic field energy harvesting, to guide the design of power supply. Firstly, based on the spatial magnetic field distribution calculation model of three core cable, the characteristics of magnetic field distribution around the three core cable were analyzed, and a split winding type energy harvesting coil was designed accordingly; Then, by solving the output voltage of energy harvesting coil, the circuit of energy harvesting module and energy management module were further designed, thus achieving the overall design of the power supply; Finally, experimental tests were conducted on the designed power supply with load, and the experimental results showed that the power supply can meet the actual load requirements.