"Speaking of robots, it would be a major breakthrough if we could study robots that walk upright like humans." Wei Fansheng sighed again, as experts in machinery and automation, they all have ideals.

It's not realistic yet... Qin Feng just wanted to deny the teacher's idea, but he felt that it was not appropriate to hit the teacher like this, how could he comfort the teacher? Suddenly, a flash of inspiration flashed in his mind, how could he have forgotten something high?

Compared to quadruped robots, this is more important to the army!

Helmets and shoes body armor, these can greatly enhance the protection of the soldiers, but it inevitably increases the weight of the soldiers, this is still a light body armor, only covering the chest, if the heavy body armor with a larger protective area, it is even more inconvenient to wear, and it is even more difficult to climb mountains and mountains.

Is it possible to solve this problem technically? Of course!

Qin Feng took a deep breath: "Teacher, have you heard of human exoskeletons?" ”

Human beings have evolved to the present, and it is skin and flesh wrapped around bones, which can be called endoskeletons, and there are also some animals, especially insect types, where hard bones are on the outside, which is the exoskeleton.

As for the human exoskeleton, it is to wear a special exoskeleton on the outside of the body, even if there is only a skeleton, it can also help people improve their weight-bearing strength and increase the flexibility of their actions.

Wei Fansheng nodded: "The history of the human exoskeleton can be traced back to 1890, when Da Mao's engineer Nicholas invented an exoskeleton-like system powered by a compressed air pack; In 1917, an American inventor developed an exoskeleton robot powered by steam; These are primitive, modern human exoskeletons have been developed since the 60s, the US military wants to get enhanced military armor, and researchers at Cornell University also hope that this exoskeleton can help people with disabilities. By '70, GE had developed the Hardman system, which included more than 30 joints and could lift up to 1,500 pounds, demonstrating the possibilities of exoskeleton technology. However, there is a big constraint to the development of human exoskeletons. ”

"What?" Qin Feng asked.

"Energy." Wei Fansheng sighed: "When we chose the robot project, we also considered the human exoskeleton, but it was later excluded in the argument, with the current energy, even the best nickel-metal hydride battery pack, at most is for the human exoskeleton to use for half an hour, and when the energy is lost, the human exoskeleton can no longer work, not only can not help humans, but will become a burden." ”

This kind of high-tech is a pity to throw away, and it is a waste of physical strength to wear, so until there is no revolutionary change in the energy system, this kind of system is flashy. Maybe in the future, there will be a breakthrough in nuclear fusion, and there will be hope, right?

What kind of robot dog, it definitely needs a battery, as a pet, as a technological exploration, half an hour or even an hour of work life is acceptable, but this human exoskeleton wants to help soldiers fight, half an hour is not enough!

Qin Feng smiled: "Teacher, you are talking about the power exoskeleton. ”

"And the unmotivated?"

Qin Feng nodded: "Of course, it can also be called a passive exoskeleton." ”

Wei Fansheng was not calm: "What can you do without motivation?" Isn't that even more cumbersome? ”

When the exoskeleton was first invented, designers thought about how to use external energy sources to help the user become a strong man, such as the General Electric system, which could amplify the user's power by a factor of 25.

At the same time, it also brings a lot of disadvantages, such as its weight of up to 700 kg! Don't look at the weight is so large, the endurance time is still ridiculously short, so the US military gave up after the test and did not continue to develop, and the development of exoskeleton technology also stagnated, until entering the new millennium, some engineers suddenly got the hang of it: why do you have to have energy? Can't we just throw this burden away?

In the 17 years of the Syrian battlefield, the sappers stationed in Palmyra were equipped with Da Mao's K2 exoskeleton to deal with unexploded ordnance, mines and homemade explosives, creating the first history of using exoskeletons in actual combat.

As a reborn, Qin Feng's biggest advantage is the forward-looking technical route, what the old professor doesn't know, he knows!

At this time, looking at Wei Fansheng's curious gaze, Qin Feng spoke: "Professor Wei, arthropods such as crabs, shrimps, and centipedes can carry weights far beyond their own body weight, do you know why?" ”

"Because of their exoskeleton? This is a research project of bionics experts, and these should be considered the category of dynamic exoskeletons, right? ”

"No, teacher, what I want to focus on is weight-bearing, although there are internal muscles to provide strength during the lifting process, but the more important thing is to carry the weight through a tough exoskeleton!" Qin Feng said, stood up from the table, came to the side, and made a walking decomposition motion.

"Teacher, you see the process of our walking, in the absence of weight on the body, the soles of the human feet fall to the ground, the ankles and knees absorb the impact of the ground, the lower limbs are responsible for supporting the weight of the body, the hip and thigh muscles swing the center of gravity of the upper body, and then push the ground with the soles of the feet, so that the cycle can move forward."

Qin Jianguo looked at his son with wide eyes, cultural people are powerful, there are so many doorways for a simple walk!

Wei Fansheng was a little curious: "And then?" ”

"In the state of weight-bearing, the older brother joints of our lower limbs reach the limit of their bearing capacity and have to bend." After Qin Feng finished speaking, he glanced at Zhao Jiao who was sitting there, and then bent down and squatted: "Come, Zhao Jiao, climb on my back!" ”

Although in front of so many people... But Brother Feng is engaged in scientific research, of course Zhao Jiao is willing to dedicate herself to scientific research, she did not twist, and climbed on Qin Feng's back generously.

Qin Feng picked up Zhao Jiao on his back and walked back and forth in front of everyone, and at the same time introduced: "You can see that when I carry a weight on my back, I provide forward momentum through the swing of my lower limbs and the flexion and extension of my joints. ”

Zhao Jiao didn't understand what Qin Feng said, at this moment, she only thought of Zhu Bajie's daughter-in-law.

But the others understood, especially Wei Fansheng, who opened his eyes wide and watched Qin Feng walk back and forth.

"In other words, the principle of this non-powered exoskeleton is to reduce the up and down swing of the center of gravity, saving the extra energy consumed when walking with weights?"