Chapter 212 It's all done! (3k)

"Director Gao means that by using a photosensitive element to detect the brightness of the monitor screen, we can know how large the diameter of the crystal has grown. Then we can use the output of the photosensitive element to perform equal diameter control!"

"Hey, this method is really interesting, simple, but feasible."

After listening to the explanations of others, Yu Yuncheng also understood and slapped his thigh: "Great! Director Gao, your method looks simple, but it can really solve the problem based on the existing conditions! Jump out of the equipment itself and think of a solution outside, great!"

If you want to say whether this method is rustic or not, it looks quite rustic. Have you ever seen a sensor attached to a monitor screen? Does it look good? It may not look very good, but can it solve the problem? It really can.

Gao Zhendong smiled and said, "This method may not look good, but it's fine as long as it can solve the problem."

After that, he drew a picture.

"We put a row of sensors on the monitor like this."

Some people were a little confused: "Director Gao, why do we need to stick a row of stickers when we can just stick one sticker at the corresponding diameter on the screen? Isn't that a bit wasteful?"

Gao Zhendong smiled and said: "Under different conditions such as temperature, environment, and drawing object, even with the same diameter index, the output of a single sensor will change. It is difficult to characterize the same diameter using the absolute value of the output of a single sensor."

Someone understood what he meant: "Director Gao, your idea is to use the relative difference of the output of a row of sensors to control it? This way, the temperature drift and other errors of a single sensor can be offset or corrected to a large extent?"

When the others heard this, they couldn't help but admire Director Gao's method. It was simple. It used a simple system, or a sensor array, to solve the problem of absolute value error of single sensor output caused by various reasons.

He has ideas, otherwise why do you say he is the director?

Gao Zhendong smiled and said, "You're right. Besides, there are more benefits than just this."

Are there any benefits? Everyone looked at Gao Zhendong with curiosity and admiration, waiting for him to continue.

"A row of sensors is like a ruler, which can be used to control different diameters without changing the sensor installation. A single sensor is like a switch, which can only be used to control a fixed diameter. Once the target diameter changes, it means that the sensor installation position must be determined and the data must be recalibrated, which is very troublesome for production."

This is actually the difference between a limit switch and a rotary encoder.

The limit switch can only trigger an action when the monitored object reaches a fixed position.

The rotary encoder can record the movement distance of the monitored object and perform more control.

Everyone quickly wrote down Gao Zhendong's ideas. As for the specific implementation, that was their business. The food had been put into their mouths. If they still couldn't eat it, that was their own problem.

Taking this opportunity, they also consulted Gao Zhendong on some questions they had in their work, especially those related to automation. It is no exaggeration to say that in this regard, compared with Gao Zhendong's theory and practice, their sum total is no match.

People who have studied automation for two lifetimes and still have some cheats are so arrogant.

A few hours passed quickly in the busy work and relaxed atmosphere.

The preliminary results of the inspection of the drawn crystal after cooling and the crystal body were sent over.

Yu Yuncheng read the inspection report carefully and handed it to Gao Zhendong excitedly: "It's done. The crystal orientation, dislocation, purity, doping concentration, structure and other indicators have all met your requirements."

Gao Zhendong also happily took the report, read it through, and then carefully looked at the crystal that was sent along with it.

This is a pink crystal, slightly elongated, and cylindrical in the middle except for the part above the shoulder and below the tail, with a diameter of 5.7cm and a length of 11.3cm.

Because the doping concentration is not high, it is a light pink color, completely different from the garnet red of a good quality natural ruby, and is very beautiful.

It actually worked. At least it looks like the crystal is consistent with that required for the ruby ​​laser.

Even in some aspects, it will exceed some others. After all, this single crystal furnace is a technological achievement decades later. Even if it is limited by existing conditions, it is possible that its products will be better than the current ones.

"Okay! This time it's done. Yuncheng, you guys continue to experiment with silicon single crystals, and try to pull qualified silicon single crystals as soon as possible based on this!"

Gao Zhendong asked someone to send the ruby ​​crystal for processing, then turned around and said, "Comrades, I declare that the trial production of the single crystal furnace has been initially successful. We have used this single crystal furnace to pull out the first ruby ​​crystal product that meets the requirements!"

All the staff cheered loudly. Although they were not pulling silicon crystals, ruby ​​crystals were also crystals. The name of this project was single crystal furnace, not silicon single crystal.

Gao Zhendong smiled again and said, "Next, we must continue to work hard and strive to develop the process of using this single crystal furnace to produce silicon single crystals as soon as possible and make it solid. Do you have confidence?"

"Have!!"

Everyone laughed and shouted in unison.

It now seems that both the ruby ​​crystal and the single crystal furnace have achieved initial success.

With this achievement, everyone in the project team is very motivated.

Gao Zhendong also laughed, but although the single crystal furnace was initially successful, it was still some distance away from completion.

First, some control algorithms can be further tuned, and the ranges of some control parameters need to be more precise.

Second, its most important and urgent product, silicon single crystals that meet the requirements, has not yet been successfully pulled out. Third, some nodes and processes that are currently controlled manually and based on experience still have a lot of room for switching to automatic control and optimization.

Fourth, there are some mechanical and structural parts, which still have the possibility of optimization and improvement.

Gao Zhendong explained these points one by one to Yu Yuncheng and the project team members, and everyone took careful notes. This was the next step to be taken.

The directions and requirements given by Director Gao are very clear, which allows them to work with a clear goal and not waste too much time and energy on irrelevant directions.

This experiment took from morning to afternoon. After all, time cannot be compressed.

I looked at the watch and it was almost time for dinner.

As usual, Gao Zhendong announced to everyone that he would arrange dinner in the factory's small canteen so that everyone could celebrate on a small scale. After all, this was an important milestone and it was nice for everyone to be happy.

Gao Zhendong paid for this money himself. It is quite common for leaders to pay for their colleagues to celebrate their success these days. After all, it is not easy for the government. For example, when the heroes who ignited the sun mentioned earlier found the squirrel.

Moreover, although such milestones are important, it is not appropriate for the government to spend money to celebrate them. Private organizations are just right.

Everyone was delighted. In that era, dinner parties were considered a relatively important ceremony and a relatively important social occasion. In those days, inviting people to dinner could really be used to test cadres.

Yu Yuncheng said: "Director Gao is very generous. Let's give Director Gao a good beating today, haha."

Gao Zhendong smiled and said, "No problem, just go ahead and do it."

Gao Zhendong asked the project team to run errands and go to the cafeteria to prepare for the dinner.

When Sha Zhu heard that Gao Zhendong was going to have a dinner party, he was very happy, not for anything else but because there would be meat in his lunch box today!

He immediately took over the job of cooking. It was not that other chefs did not want to grab this opportunity. The food for gatherings in the small canteen must be better than that in the big canteen. It's not like Sha Zhu is the only one who has a small lunch box, everyone has one.

But everyone knows that when Director Gao from the Technical Department's Research Lab invites guests, the chef must be Master He. There is no way to snatch the chef's hand, and it would offend Sha Zhu and possibly even Director Gao.

When the time was almost up, a group of people from the laboratory went to the small cafeteria in a crowd.

Along the way, they saw their comrades from the factory whispering to each other.

"Hey, is the Technical Department's research lab having another dinner party?"

"From the looks of it, that should be it. It looks like they have come up with something good again."

"Director Gao of the research lab should be in the lead. I heard that Director Gao has this habit. When he achieves something, he always treats everyone who participates to a good meal."

"Oh, I wish I was in the research room too."

"You? Go take a piss first, then go back and burn a few more incense sticks for your ancestors. Maybe you'll have a chance."

"Get lost, you are such a boring person!"

"That's right, what truth are you talking about!"

"."

In the small canteen, Deputy Director Li also entertained guests.

When he saw Gao Zhendong leading a large group, he was stunned at first, and then he was delighted, thinking that this was another achievement.

He knew quite a few of these people, including Comrade Yu, who came from other units to participate in the project, and he was still in charge of the relevant procedures.

There was only one explanation for why Gao Zhendong brought these people to the small cafeteria for a meal. Their work was progressing very well. It couldn't be said to be a complete success, but at least they had achieved some key points.

As long as the research laboratory produces results, the factory will benefit from it, it’s just a matter of size.

He didn't rush over, but was busy with his own reception.

After a while, he heard that it was getting lively over there, so he apologized to the guests and walked over with his cup.

Before the person arrived, the voice came first: "Haha, Director Gao, judging from your posture, have you achieved results again?"

Gao Zhendong stood up and said with a smile: "It's not the final result, but we have achieved an important milestone, so I would like to invite everyone to come and celebrate."

Deputy Director Li raised his glass and said, "That's great news. Come on, let me toast to everyone. I would like to thank the colleagues in the research room and Engineer Yu for their hard work during this period on behalf of the factory."

The factory leader toasted, which was a prestigious thing, so everyone stood up and responded with laughter.

After drinking, Deputy Director Li winked at Gao Zhendong.

(End of this chapter)