- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | JING Yongzhi, FENG Wei, WANG Sen, QIAO Ke, LU Linhai. Simultaneous Wireless Power Supply and Signal Transmission Method for Maglev Vehicle Gap Sensors[J]. Journal of Southwest Jiaotong University, 2023, 58(4): 965-974. doi: 10.3969/j.issn.0258-2724.20210905
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In order to meet the demand for power supply and signal transmission for maglev vehicle gap sensors, a full-duplex simultaneous wireless power and signal transmission (SWPST) method was proposed. Firstly, the full-duplex SWPST system of the maglev gap sensors was established. The S/LCC compensation structure was adopted in the power circuit to stabilize the voltage, and the LC parallel branch was used in the signal receiving circuit to suppress ipsilateral signal carrier interference. Secondly, the power and signal transmission characteristics of the system were analyzed respectively. Then, the voltage gain of signal transmission, the interference of power transmission on signal transmission, and the crosstalk between bidirectional signal transmission were analyzed. In addition, some laws about the influence of system parameters on the transmission characteristics of the system were obtained. Finally, an experimental platform of 20 W was built. The experimental results show that the LC parallel branch in the signal receiving circuit can effectively eliminate the crosstalk between signals, and power transmission has less impact on signal transmission. It is verified that the proposed topology can realize wireless power supply and full-duplex simultaneous transmission of distributing control commands and uploading gap signals for the sensors.
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