"Okay." Ma Zhen followed the request and activated the prosthetic.

Then, the operating indicator of the sensing cap lights up at the same time.

Chen Shen took out the notebook he carried with him, connected the signal of the signal conversion device, and detected the running status of the whole machine.

"There is no problem with the connection between the brain control system and the prosthesis." He turned off the system and looked at Ma Zhen.

"This prosthetic was tested before you came, and it works." Ma Zhendao.

Uncle Wu and his son in the back craned their necks to watch, full of curiosity about the prosthetic leg on the table.

"Let's start testing it." Chen Shen stepped out of the way, beckoned to Uncle Wu, "Uncle Wu, come here and sit down." ”

Uncle Wu hurriedly walked over, sat on the chair and straightened his waist, and his son also followed by him, holding his shoulders stiffly.

The tested prosthesis was suspended from the brace attached to the brace.

Seeing the nervousness of the two, Chen Shen put on a sensory hat for Uncle Wu: "Don't worry, it's just a simple test." ”

"Have you ever had a myoelectric prosthesis fitted before?"

"No, Uncle Wu has no long-term experience with prosthetics."

Ma Zhen helped Uncle Wu answer, he had carefully asked various questions related to the experiment before.

Uncle Wu in front of him amputated his entire right arm due to an accident ten years ago, and since then, due to family reasons, he has not been fitted with a prosthesis such as electromyography or electric power.

Around this seaside town, Uncle Wu is already the most suitable experimenter.

"That might be a bit of a problem."

Chen Shen was mainly worried that the nerve signals related to Uncle Wu's arm movements would weaken.

This would not have been the case if the prosthesis had been fitted before, and the nerve signal was required to send instructions to generate the EMG signal when the prosthesis was used.

"So what now?" Uncle Wu turned his head and asked.

Chen Shen said: "Try it first and see if you can read Uncle Wu's nerve signals." ”

After saying that, he stepped aside, put the camera he was carrying aside, returned to the computer, and turned on the brain control system again.

"Uncle Wu can start, you imagine your right hand moving, reaching out or twisting your wrist." Chen Shen said.

"Okay."

Uncle Wu responded and tried to do as required.

However, the prosthetic leg on the side brace did not respond......

Ma Zhenxin was half cold, and turned his head to look at Chen Shen.

Chen Shen was calm at this time, "Don't worry, this is a normal phenomenon, after all, his right arm has been missing for too long, and it is normal for the signal to be messy." ”

At this time, Uncle Wu saw that the prosthetic leg had not moved for a long time, and he also stopped, looking at Chen Shen worriedly, not knowing what to do next.

Chen Shen smiled and gave a thumbs up: "Uncle Wu continues, the current situation is normal, and there will be a turnaround soon." ”

He glanced at it, and the data on the computer showed that it was still retrieving the corresponding neural signal, and as long as it was retrieved once, the latter signal would be locked, and it could be connected at any time in the future.

Uncle Wu wiped the nervous fine sweat on his forehead with his left hand, simply closed his eyes and continued, his son was also by his side to cheer him on with his eyes.

Everyone in the team looked at Uncle Wu on the chair nervously, and all the sleepiness just now was thrown to the sky.

Ma Zhen snapped his fingers nervously on the side, and the cracking made a click......

Chirping~

Suddenly.

There was a soft thud from the prosthetic.

I saw that the prosthetic limb, which had not moved just now, was activated, and the five fingers were slowly tightened and clenched into a fist.

Uncle Wu stared blankly at the prosthetic leg that was moving according to his wishes......

Call!

The first reaction of everyone was to breathe a sigh of relief, and then to feel the joy and sense of accomplishment that welled up in their hearts.

Chen Shen looked at the computer screen, which showed that a signal suspected of clenching a fist had been matched, and if there was a mistake, it could be corrected manually.

"Uncle Wu, did you just imagine yourself clenching your fists?" He asked Uncle Wu, who was staring at the prosthetic leg in a daze.

"Oh!" Uncle Wu's eyes regained focus, and tears gradually welled up, "Yes, yes, I'm imagining myself clenching my fists." ”

Chen Shen nodded, that is, the signal did not match the error.

"Go ahead." He said.

"Good!" Uncle Wu wiped away the tears that unconsciously welled up with his left hand and wanted to continue the test, but his palms were all wet, and the tears couldn't be stopped.

The person next to him immediately sent tissues and asked Uncle Wu's son to help his father wipe his tears.

In such a situation, the experiment obviously could not go on, Chen Shen shook his head with a smile, suspended the test, and waited until the emotions of the two fathers and sons calmed down before continuing.

The person next to him brought a water cup to Chen Shen and Uncle Wu.

Ma Zhen grinned on the side, and he couldn't close it at all.

Not only him, everyone at the scene had smiles on their faces, even Chen Shen was no exception.

They feel like they're doing something meaningful, worthwhile.

The meaning and value of this matter is not only fed back to them, but can also be passed on to others through them.

Maybe their gritted teeth and persistence in the past few years was to make their current self and others smile like this.

After taking a sip of water, Uncle Wu came over and thanked Chen Shen with a thousand words, and there were endless words.

Chen Shen hurriedly asked him to calm down and prepare for the next test.

"Good, good!"

Uncle Wu sat back in his chair excitedly, feeling that his heartbeat had been accelerating, and he couldn't stop at all.

"Then do the second test, which matches the wrist rotation and elbow flexion and extension." Chen Shen reminded.

Uncle Wu was passionate and very cooperative with imagining these actions.

Soon, in less than a minute, the wrist rotation signal was detected and matched.

The mood of the people at the scene has calmed down, and they still can't help but applaud in unison.

After that, the flexion and extension signals of the elbow are also quickly matched.

Seeing Uncle Wu like a child who has received a new toy, joyfully controlling the prosthetic leg on the brace, everyone feels relieved, and there seems to be a burst of ambiguous spring gushing out from the bottom of their hearts, spreading all over their bodies.

The original intention will never live up!

The test can be finished at this point, but everyone looks at Uncle Wu's joyful appearance, and no one can bear to disturb him.

It wasn't until half an hour later that Uncle Wu found that there were fewer and fewer people around him, and he realized that the experiment had stopped, and stopped embarrassedly.

"It's okay, Uncle Wu, you can continue to test, and we will collect some more data." Ma Zhen sat in front of the computer and said, as if analyzing the data.

In fact, now he is discussing with Chen Shen what needs to be improved in the prosthesis.

"There are still some actions that cannot be done in the current prosthesis, the action execution time is still too long, and the fingers cannot move alone, our first-generation products should achieve the fastest action execution time of less than one second, and also allow multiple actions to be performed at the same time."

"Hmm......" Chen Shen thought about it again: "Let's put it this way, on the first generation of products, I asked users who use our prosthetics to be able to type on the keyboard with the same sensitivity as a normal person." ”

When Ma Zhen heard this goal, he thought about it carefully, and immediately felt his scalp tingle.

"Keep up the good work, come to me if you have any questions!"

Chen Shen patted him on the shoulder, retracted the camera and left.

Of course, before leaving, he also asked Uncle Wu if he could put the video he had just shot on the Internet, and got an answer with no doubt in agreement.