磁浮车间隙传感器无线供电与信号同步传输方法

靖永志; 冯伟; 王森; 谯柯; 鲁林海

doi:10.3969/j.issn.0258-2724.20210905

磁浮车间隙传感器无线供电与信号同步传输方法

doi: 10.3969/j.issn.0258-2724.20210905

靖永志^{1, 2,},
冯伟^{1, 2},
王森^{1, 2},
谯柯^{1, 2},
鲁林海^{2, 3}

1.
西南交通大学电气工程学院，四川成都 611756
2.
西南交通大学磁浮技术与磁浮列车教育部重点实验室，四川成都 611756
3.
西南交通大学唐山研究生院，河北唐山 063000

基金项目: 国家自然科学基金（52077183）

详细信息

作者简介:
靖永志（1979—），男，副研究员，研究方向为磁浮列车与磁浮技术、电力电子技术及其应用等，E-mail：jingyongzhi@swjtu.edu.cn

中图分类号: TM724
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出版历程
- 收稿日期: 2021-11-16
- 修回日期: 2022-04-06
- 网络出版日期: 2023-06-08
- 刊出日期: 2022-10-14

Simultaneous Wireless Power Supply and Signal Transmission Method for Maglev Vehicle Gap Sensors

JING Yongzhi^{1, 2
,},
FENG Wei^{1, 2},
WANG Sen^{1, 2},
QIAO Ke^{1, 2},
LU Linhai^{2, 3}

1.
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
2.
MOE Key Laboratory of Maglev Technology and Maglev Train, Southwest Jiaotong University, Chengdu 611756, China
3.
Tangshan Graduate School, Southwest Jiaotong University, Tangshan 063000, China

摘要

摘要:
为满足磁浮车悬浮间隙传感器在供电和信号传输方面的需求，提出了一种无线电能与信号全双工同步传输方法. 首先，建立悬浮间隙传感器无线能量与信号全双工同步传输系统，在能量回路中采用S/LCC补偿结构以实现稳压效果，并在信号接收回路采用LC并联支路抑制同侧信号载波干扰；其次，对系统电能传输特性和信号传输特性进行了分析；然后，重点分析了信号传输电压增益、能量传输对信号传输的干扰以及双向信号传输之间的串扰，得出系统参数对系统传输特性影响的规律；最后，搭建20 W的实验平台进行实验验证. 实验结果表明：信号接收回路中采用的LC并联支路可有效消除信号之间的串扰，能量传输对信号传输影响较小，验证了所提拓扑结构可实现无线供电、传感器控制指令下发以及间隙信号上传的全双工同步传输.
- 无线电能传输 /
- 共享通道传输 /
- 全双工通信 /
- 间隙传感器
Abstract:
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.
- wireless power transmission /
- shared channel transmission /
- full-duplex communication /
- gap sensor

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图 1 无线能量与信号全双工同步传输系统结构

Figure 1. Structure of simultaneous wireless power and signal full-duplex transmission system

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图 2 能量传输通道的等效电路

Figure 2. Equivalent circuits for power transmission channel

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图 3 输出电压U_o和效率η与互感M 关系

Figure 3. Output voltage U_o and η versus mutual inductance M

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图 4 信号传输通道等效电路

Figure 4. Equivalent circuits for signal transmission channel

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图 5 电压增益与紧耦合变压器线圈L_dr1和L_dt1的关系

Figure 5. Voltage gain versus tightly coupled transformers L_dr1 and L_dt1

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图 6 G_pd1和G_pd2伯德图

Figure 6. Bode diagrams of G_pd1 and G_pd2

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图 7 G_pd1-13和G_pd1-15与L_dt1、 L_dr1关系

Figure 7. G_pd1-13 and G_pd1-15 versus L_dt1、 L_dr1

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图 8 G_pd1-13和G_pd1-15与L_d1关系

Figure 8. G_pd1-13 and G_pd1-15 versus L_d1

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图 9 原边信号源到原边接收回路电压增益

Figure 9. Voltage gain of original-side signal source to original-side receiving circuit

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图 10 信号反向传输时电压增益与L_d1关系

Figure 10. Voltage gain versus L_d1during reverse signal transmission

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图 11 原理验证实验平台

Figure 11. Experimental platform for principle verification

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图 12 松耦合线圈电压U_p、U_s和负载电压U_out

Figure 12. Voltages of loosely coupled coil U_pand U_s and load voltage U_out

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图 13 无能量传输时接收变压器和接收电阻电压

Figure 13. Voltages of receiving transformer and receiving resistor without power transmission

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图 14 能量与信号全双工同步传输解调波形

Figure 14. Demodulated waveforms during simultaneous power and signal full-duplex transmission

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图 15 有无能量传输时信号传输波形

Figure 15. Waveforms of signal transmission with and without power transmission

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表 1 系统参数

Table 1. System parameters

参数	数值	参数	数值
R_L/Ω	24	L_dt1, L_dt2/μH	5
L_p, L_s/μH	29	L_dr1, L_dr2/μH	10
M/μH	15	C_d1/nF	0.288
C₁/nF	88	C_d2/nF	0.396
C_s/nF	140	C_d3/nF	1.270
C₂/nF	233	C_d4/nF	3.520
L₂/μH	15	C_d5/nF	0.800
L_d1, L_d2/μH	22	L_d3/μH	2.360
R₃/Ω	3	R₄/Ω	2
R_d1，R_d2/Ω	300	f_d1/MHz	2.0
f_p/kHz	85	f_d2/MHz	1.2
U_dc/V	24

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表 2 性能比较

Table 2. Performance comparison

文献	年份/年	功率/W	调制方式	线圈直径/cm	传输距离/cm	信号传输速率/（kb·s⁻¹）	全双工实现特点
本文	2023	20	ASK	5	1	115	LC电路×2
[13]	2020	500	FSK	195	6	500	信号收发器×2 + PLL
[14]	2019	3300	DQPSK			64	模拟开关×4 + DQPSK解调
[17]	2021	600	ASK			80	LC电路×8

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参考文献(17)

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磁浮车间隙传感器无线供电与信号同步传输方法

doi: 10.3969/j.issn.0258-2724.20210905

作者简介: 靖永志（1979—），男，副研究员，研究方向为磁浮列车与磁浮技术、电力电子技术及其应用等，E-mail：jingyongzhi@swjtu.edu.cn

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出版历程

Simultaneous Wireless Power Supply and Signal Transmission Method for Maglev Vehicle Gap Sensors

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出版历程

目录

作者简介:
靖永志（1979—），男，副研究员，研究方向为磁浮列车与磁浮技术、电力电子技术及其应用等，E-mail：jingyongzhi@swjtu.edu.cn