Professor Peking University put a fish in Weiming Lake ...

Walking is not named by the lake, you may rarely pay attention to

The fishes that are far away from the far away, the swarm of 的 的 的 的 的 的

There are a few special small fish

Their speed is obviously slower than those of their companions

In your hands, you will find that they are not the body of flesh and blood

And consisting of cold parts

This is Professor Xie Guangming of Peking University School of Engineering

Top 20 years of research ——

A group of carefully "raising" machine fish

"Weiming Lake is a ocean"

Xie Guangming's team is here to regularly fish fish and test performance

Make this group of machine fish not only like real fish

Twist in water, perceive the environment, communicate with each other

Also swimming the unnamed lake, swimming to the real sea-

The machine fish once went to the North Pole and Antarctica to participate in the scientific examination twice

Today, learn with Xiaobei

Making, performance, extensive use of machine fish

Seeing the charm of smart bionic

Click to watch Professor Xie Guangming about the delicate machine fish

01

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Can "go to heaven" but may not be "going to the sea"

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Why do we need underwater robots?

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

Why do you do it like a fish?

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

The earth is a water ball, covering 70%of the water. Who is the master of this water world? In fact, it is fish, which is the most suitable for the water environment. Biologists have pointed out that fish appeared at least 400 million years ago. After continuous elimination, there are more than 30,000 fish named by human beings, and new species have been discovered.

Just like humans want to "go to heaven", start from the bird, and finally create an airplane. When we want to "go to the sea", we will also ask the "Aboriginal people" on the bottom of the sea. Their travel efficiency is much higher than that of propellers, and it has good mobility and can flexibly shuttle in obstacles. Of course, it is also easier to mix into the fish group and avoid "side eyes".

After hundreds of millions of years of evolution, these characteristics make them very suitable for the harsh environment underwater.

Why is "going to the sea" more difficult than "climbing"?

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

The deepest trench on the planet is the Mariana Trench. The sea depth is about 10,000 meters. Humans that can reach may only be two digits, let alone robots.

In contrast, the plane can carry us to fly to the high altitude of 10,000 meters. Astronauts can live at the space station for half a year, or even 380,000 kilometers away from the moon. It can be seen that compared with the atmospheric environment of human habits, the underwater environment is more constrained.

Peking University's machine fish sample machine

02

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Go! Live like fish

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How did a machine fish born?

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

Making a machine fish requires three steps: finding the imitation object -design structure -repeated application debugging.

Xie Guangming and his team discovered a kind of fish called boxes. It lived in coral reefs and had a fairly unique appearance advantage -inner concave cheeks and developed fins, which could swim both stably and flexibly.

As a result, they began to focus on the box, from shape to internal structures, including hardware and circuits, which were designed one by one. In the end, the 3D printer spit out the inner concave shell, and then carefully calculated the assembly after careful calculation. A electronic box can swim in the water.

It is necessary to ensure that the machine fish swims like fish, not just the shell is like a fish, and it is inseparable from repeated testing. The small pool in the laboratory is at most two or three meters, which cannot be swimmed at all, and some performance cannot be measured. Xie Guangming said with a smile: "It happened that we were lucky. There was a Weiming Lake in Peking University, so we threw this fish to the Lake of Weiming." Now, going to Weiming Lake Baiyu has become a reserved program in the laboratory.

There is a song called "Unknown Lake is a Ocean", which may be a campus song created by some Beibei. We actually hope that our fish can swim to the real ocean. Soon, our wishes were realized.

In 2012, our fish swims to the North Pole. Two years later, our fish successfully achieved the first flight of Antarctica. Of course, a little regret. Although this fish was swimming, I didn't take it by myself. Because this is the action of the National Scientific Examination, it is the entrusted scientific examination team to bring the fish. So it is my machine fish on behalf of me to conquer the poles of the world.

Double -tail fins measuring water quality in Antarctica for the first time

Image box 器 Machine Fish First Airlines North Pole

How do you have the same perception of real fish?

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played. This is also the original intention of Xie Guangming's research.

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

The bottom of the sea is always dull, and it may even be turbid. In this case, how to solve the problem of the sight of machine fish? Biological studies have shown that fish have a special type of perception organs called side line systems, distributed on the side and facial facial. When the fish goes back, it can use this system to perceive the subtle changes of water flow.

Goldfish side line system

Xie Guangming installed a similar pressure sensor on the body of the machine fish, so when the machine fish swims in the water, it can evaluate whether there are other companions or obstacles to the surroundings according to the water flow.

Can machine fish be social?

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

Since the machine fish can perceive the existence of other things, can it be communicated?

Xie Guangming invited another fish -weak electric fish. Weak electric fish can adjust the body to form a transformed electric field, which is perceived by another fish. This is even "greeting".

Xie Guangming established a special theoretical model for this phenomenon and designed the circuit. In this way, the simple underwater communication of the two machine fish was realized.

How good the fish is doing

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

When machine fish can be perceived and communicated with each other, the formation of machine fish clusters is also possible. Once the cluster is formed, there are many things that it is difficult for humans to do on the agenda in the past, especially underwater search and rescue.

In the vast sea, how can I find a lost aircraft by relying on a manpower search team? Even the advanced instruments cannot be against the power of the sea. If you can put hundreds of machine -fish groups into use, the hope of finding will be greatly increased.

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Learn from nature, feed back nature

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Intelligent Bionic: When the exquisiteness of nature meets the wisdom of human beings

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

Natural selection, survival of the fittest. After the long -evolved large waves, the surviving creatures can adapt to a specific environment well. Humans can solve many engineering problems by learning and drawing from the characteristics of biology from nature.

Peking University Intelligent Bionic Design Laboratory was established on May 4, 2018 at the 120 -year -old school celebration of Peking University. The laboratory was jointly founded by professors such as Xie Guangming, Sun Huili, Cui Yue and Li Yongmei.

Taking nature as a teacher, learn from nature. Based on the design, R & D and practical application of smart bionic equipment and systems, the laboratory explores natural biological mechanisms and mechanisms of nature, develop bionic innovation of biological individual functions, imitates the ability of the movement, perception, positioning, communication and other abilities, and heights Integrate artificial intelligence, robotics and innovative design. In particular, the laboratory also explores the widespread cluster behavior in nature, simulates self -organized group collaboration capabilities and is applied to large -scale artificial groups.

Some laboratory staff group photos

Before the laboratory was founded, the relevant teachers of the School of Engineering had long -term accumulation in robotics research, and successively successively developed machine dolphins, machine carp, machine sea turtles, water and land amphibious robots, etc. The results of the laboratory have also been successfully industrialized. The world's first underwater photography machine fish has won the 2018CES (International Consumer Electronic Product Exhibition) Innovation Award. The world's first underwater photography machine fish

Does the real fish recognize the machine fish?

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

Just as AI can't escape Tu Ling testing. As a member of the robot, the robot fish has passed the "real fish test" in a coincidence.

Everyone likes to walk dogs and cats, and Xie Guangming's team "catfish". In order to test performance, Xie Guangming put his little fish into the Lake of Peking University. What is unexpected is that other real fish will swing behind the machine fish.

At that time, Xie Guangming was still joking: "We will be convenient to fish in the future. What you want to eat, send a machine fish to go down, and will not be involved in other fish."

How to help the real fish survive?

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

To fish. On the one hand, it can meet people's needs for seafood. On the other hand, the dangerous goods or various aircraft wreckage that accidentally fall into the sea in military exercises must be removed. However, human beings are very difficult to operate underwater. At this time, underwater robots need to be played.

This is also the original intention of Xie Guangming's research.

The real fish's recognition of machine fish has a higher value application -guiding real fish to travel. Xie Guangming's team is cooperating with the team of the water conservancy project. The main content is to use machine fish to guide the real fish to the tadpole fishway of the dam to ensure the iteration of the species.

In this way, humans can save rare fish resources while obtaining hydropower.

Of course, will there be the "ethical" problem of fish? This is not possible.

Future is still continuing

The ocean is still with its gentle and generous embrace

Nourish and educate humans

We use the body of the machine fish

"Look" to the bottom of the sea, even swimming in the sea floor

Beautiful coral reefs, black ditch

Unknown creature

Native

There are too many secrets, waiting for us

This is also Xie Guangming's "machine fish" dream

Xie Guangming

Professor of Peking University Institute of Technology, doctoral supervisor

He graduated from Tsinghua University and is currently a professor and doctoral supervisor at the School of Engineering of Peking University. Mainly study the fields of multi -intelligent body systems, multi -robot collaboration, group intelligence and other fields. Hosted a number of national natural science funds projects including key projects. A number of awards such as the National Natural Science Award and the first prize of the Ministry of Education Natural Science Award. He has served as the deputy director of the Working Committee of the Robotics Competition of the Chinese Society of Automation. He is the founder of the International Water Robot Contest and the editor -in -chief of the journal Mathematical Privems in Engineering, including many journal editor board members such as Scientific Reports.

Source: Peking University Rong Media Center, School of Engineering, Peking University, Ge Zhi Tao

Cover picture: Jiang Chao

Pictures and videos in the text: Provided by the respondents

Edit: Huang Xi, Dai Luyao, Guo Yasong

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