Lijuan Xiang

Dr. Lijuan Xiang

Shenzhen Polytechnic, Shenzhen, Guangdong, China
+1
orcid

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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2 April 2019 in IEEE Access
Verified
Journal Article
Open access
LXLijuan Xiang
Lijuan Xiang
ZZZe Zhu
Ze Zhu
JTJindong Tian
Jindong Tian
Yong TianYong Tian
Yong Tian
In this paper, a foreign object detection (FOD) method based on symmetrical coil sets is proposed to prevent wireless power transfer (WPT) systems from heating, which could possibly cause an accidental fire. First, the influence of foreign metal object on magnetic field distribution of the WPT system is analyzed. Then, a two-layer symmetrical detection coil set is proposed considering the magnetic field characteristics. This kind of FOD method can reduce the design complexity and the detection strategy is easily realized. The mutual inductance variation patterns are used to detect the presence and location of metal objects. Four scenarios of foreign object intrusion, including one coin with different locations, a coin on top of two adjacent detection coils with the same cover area, different test bodies, and different numbers of coins are taken into consideration for validating the effectiveness of the proposed FOD method. Finally, a WPT system prototype with symmetrical coil sets for FOD detection is established. Both the simulation and experimental results indicate that the proposed method can effectively detect the presence and location of foreign objects. INDEX TERMS Wireless power transfer, Symmetrical coil sets, Foreign object detection, Heating effect.

13 August 2018 in IEEE Access
Verified
Journal Article
Open access
LXLijuan Xiang
Lijuan Xiang
Xiaoyu LiXiaoyu Li
Xiaoyu Li
JTJindong Tian
Jindong Tian
Yong TianYong Tian
Yong Tian
Dynamic wireless charging technology can supply power for electric vehicle (EV) while it is in-motion. However, the system output stability is heavily influenced by the mutual inductance variation of the magnetic coupler, which is a major drawback of the EV dynamic wireless power transfer (EV-DWPT). This paper focuses on the primary coil design and its activating method. First, the LCC compensation network was adopted in both primary side and pick-up side of the system to achieve the constant primary current characteristic. Subsequently, a double-coil excitation method with the crossed-DD coil structure was proposed, which specifically concentrates on the feature of the dynamic mutual inductance. Simulation studies were carried out to prove the effectiveness of the proposed system. An EV-DWPT system prototype was performed to further verify the theoretical and simulation results.

1 January 2020 in IEEE Access
Verified
Journal Article
Open access
Yong TianYong Tian
Yong Tian
ZZZe Zhu
Ze Zhu
LXLijuan Xiang
Lijuan Xiang
JTJindong Tian
Jindong Tian


17 April 2023 in Crystals
Verified
Journal Article
Open access
PDF file
YXYan Xue
Yan Xue
QNQiong Nie
Qiong Nie
XHXin Hou
Xin Hou
BWBaolei Wang
Baolei Wang
YCYanbo Chen
Yanbo Chen
LXLijuan Xiang
Lijuan Xiang
High-efficiency deep-blue organic light-emitting diodes (OLEDs) play a crucial role in realizing ultra-high-definition (UHD) flat-panel displays and reducing power consumption. Generally, most reported OLEDs with a Commission Internationale de L’Eclairage (CIE) y coordinate < 0.06 are achieved by traditional fluorescent deep-blue emitters. However, it is challenging to obtain deep-blue fluorescent OLEDs with a high external quantum efficiency (EQE) (reaching the theoretical limit of 5%). In this work, we have successfully employed a hole-transporting material for an emitter, which can increase the efficiency in deep-blue OLEDs. The device employed with the proposed hole-transporting material exhibits deep-blue emission peaks at 427.0 nm with CIE coordinates of (0.155, 0.051), a turn-on voltage (Von) of 4.5 V, and an EQE of 4.5%. The performance of the OLED can be improved by 5.0% by optimizing the device structure. Finally, the flexible display when using the OLED devices exhibited a high image quality.

5 January 2024 in IEEE Sensors Journal
Verified
Journal Article
Closed access
WFWenyong Fu
Wenyong Fu
QLQiuyan Luo
Qiuyan Luo
JHJunkun Huang
Junkun Huang
XDXindong Duan
Xindong Duan
YLYubo Liao
Yubo Liao
HCHouzhi Cai
Houzhi Cai
X-ray diode is an essential instrument for the measurement of the radiation flow in the inertial confinement fusion (ICF) experiment. The time resolution of the traditional X-ray diode is about 100 ps, which needs improvement. A newly electronic pulse-dilation technique can greatly improve the time resolution of the high-speed diagnostic instrument. Here, an ultrafast X-ray diode with electronic pulse-dilation technique is presented, which includes a pulse-dilation device and an anode electron detector. The pulse-dilation X-ray diode is theoretical and experimental researched. The time resolution of the X-ray diode is approximately 261 ps without electronic signal pulse-dilation, and it will be improved to 19 ps by using the pulse-dilation technique.