Charging separately?Dr. Tongji turned science fiction into reality

The mobile terminal can be charged separately. This is the science fiction "Three Body"

Described scene

Five -year grinding a sword

A Tongji youth turns science fiction into reality

he

It is the School of Electronics and Information Engineering

Grade 2017 Student

Excellent graduates of Shanghai 2022

Bear bright

Everything starts from scratch

In 2017, Xiong Mingliang went to the Telecommunications Academy's computer science and technology major to study for a doctorate degree. Professor Liu Qingwen's natural fund project "distributed laser mobile charging technology for mobile communication devices" was about to start. The project is aimed at the national strategic needs and aims to solve the problem of "last few meters" of the "last few meters" power transmission of smart cities, industrial Internet of Things, robots, etc. He readily joined it. "I hope to be able to do the research work with strong theoretical and breakthroughs. This project attracts me."

Breakthrough means difficult, it is not difficult for Xiong Liang.

This is a cross -study involving optical and electrical. He was born in a computer. He has neither the theoretical basis nor experimental conditions.

He did not shrink back and welcomed the difficulties.

Everything starts from scratch.

From self -study MOOC network lessons, to intensive reading a large number of optical books and papers, he supplemented the theoretical knowledge required by the Institute of Optics; from the planned laboratory space, to the purchase of instruments, optical components, electronic components, etc. The optical and circuit laboratory; from watching teaching videos to experiments, he explored the experience of optical system building ...

In this way, the technical difficulties such as laser resonance construction, beam treatment, photoelectric conversion, voltage voltage antihypertensive circuit, maximum power point tracking, heat dissipation and computer simulation were overcome one by one.

The sweat giving is always proportional to the results. During his doctoral study, he published 17 papers in the Flagship Journal of the IEEE TWC, IEEE TCOM, IEEE Commg, IEEE IOTJ and other international conferences such as the flagship journal and IEEE ICC in the field of Internet of Things. Two applications such as the project on the fund have been approved, and the reviewers of many journals and conferences such as IEEE TWC have won a number of awards such as doctoral students' national scholarships, Huawei scholarships, Phoenix electrical scholarships, and "academic pioneer" of Tongji University. And honor.

Tongji

Infrared space charging technology

For the 5 -year exploration and persistence, it has staged results.

Earlier this year, the infrared space -free charging technology developed with the team can not only power the mobile terminals such as smartphones and AR glasses indoors, but also mobile power supply for IoT devices such as cameras, drones such as drones, and other IoT devices in the future. Wi-Fi's wireless transmission.

(Experimental display: The sender transmits infrared light to the receiver in the mobile, and the receiver will convert the receiving light to electrical energy and forward it to the mobile phone. For the convenience of the test, the receiver is an external device, which can be used in the future to use it to bring it in the future. Smallization integrated into the mobile phone.)

"The difficulty of charging in the air is that when the mobile phone is moving, how to accurately transmit electric energy wirelessly to the mobile phone, how to ensure a few watts of power or safe?"

Cat's eyes look shining because they can reflect light in the original road. According to the reflex made by cat eye structure, the cat's eyes are called the cat's eye to reply to the reflector. It is composed of a mirror and a convex lens. "When I was studying, I thought, what would happen if the mirror scorching plane is far away or near?"

He used theoretical derivation to find that the improved cat's eye reflectors could restore reflex light and have a controllable focus effect.

It is precisely because of this discovery that he made a spatial separation laser resonance cavity that can be freely moved and has a very low spatial loss in subsequent experiments.

And this is the core structure of long -distance charging. It can automatically generate a very low resonant light beam between the charging device and the mobile phone, automatically track and align the mobile phone to achieve accurate charging. It is important that when the body is close to the light beam, the resonance of light will be interrupted automatically and will not harm the body.

Not only did he design this laser cavity, he also successfully developed a complete set of air charging devices. This system has potential value in national defense, power grids, airports, stations, industrial Internet of Things and consumption.

In addition, he also studied the method of using space -separated laser resonance cavity to achieve high -speed wireless communication, which can make future wireless connections like "fiber".

Tongji

In Xiong Mingliang's view, his scientific research has just started, but he is extremely firm about the direction he will go in the future. "Make electricity and information can be obtained anytime and anywhere like air. It is not only an important needs for the modernization of the national industrial industrial, but also the expectation of each of us who yearn for a better life. I am willing to continue to work hard in this direction."

Wen: Wei Dan

Source: News Center, Student Affairs Center

School of Electronics and Information Engineering

- END -