After Zhao Guoyang spoke, Xu Linlin rubbed his hands and said timidly: "Mr. Zhao, sorry, I still have one more question to ask for."

Zhao Guoyang nodded, stretched out his hand, and made a "please" gesture.

Xu Linlin glanced at the teacher Ji Chongxuan beside him, and then said: "From your story, we have basically learned about the development status of mine hoists at home and abroad, and also learned about the technical level of the advanced international lifting machinery and electronic control system..."

"My question is, what is the best place for mine hoists that represent advanced foreign technology in terms of electronic control systems than our country?"

"Can our 'SMS company' begin researching and developing this product, can it compete with these excellent international products and seize market share?"

After Xu Linlin's two questions were exposed, Zhao Guoyang also looked at him with some admiration.

Indeed, this young man with a somewhat thin figure, although his appearance is inconspicuous, the questions he asked are all very skillful.

It can be seen that he has accumulated a lot of deep accumulation in basic mechatronic theory and practical applications in daily life.

Just as Zhao Guoyang secretly praised Xu Linlin, the technicians of the "SMS Company" also began to pay attention to this inconspicuous young man.

During the past two days of getting along, the technicians of "SMS Company" have already known the identities of Professor Ji and these students, and also know that they will work with everyone to develop and manufacture new products of this "mine elevator" for a long time in the future.

Under such a background, everyone of course hopes that the stronger the ability of these six students, the better.

After all, no one would hope that some teammates who were "unusual" or even dragged their legs in their team.

After Xu Linlin asked this question, Zhao Guoyang reached out and pressed down, "Student Xu Linlin, sit down, I will briefly answer this question to you..."

After Xu Linlin sat down, Zhao Guoyang slowly started to speak: "Student Xu just said something right."

"Because of the special requirements of mine hoists for safety, reliability and speed regulation performance, the technical level of the lifting electromechanical control system represents the transmission control technology level of an enterprise or a country to a certain extent."

"From the current popular foreign mine hoists on the market, the application characteristics of their electrical control are roughly the following aspects..."

"The first point is to improve the microcomputer control of the process."

Zhao Guoyang raised a finger and said, "Most of the foreign mine hoists have been controlled by microcomputer during the lifting process."

"The microcomputer is powerful, flexible in use, fast computing speed, and easy to monitor and display. Most importantly, it has self-diagnosis function, which cannot be achieved by analog control!"

"This technological backwardness is also the most important reason why our domestic elevators are gradually declining."

After Zhao Guoyang finished speaking, Ji Chongxuan's face became more and more serious.

Based on this Mr. Ji's understanding of the level of domestic electronic control systems, he certainly knew that what Zhao Guoyang said was genuine "dry goods".

The reason why domestic mine hoists are sluggish in the market and gradually lose the market. One of the most important reasons is their backwardness in control.

Although several domestic joint venture manufacturers of mine hoists have gradually used microcomputer control technology, their technologies are imported from abroad and have a very high cost.

If you want to truly come up with products that can compete with European and American powers, you really need to greatly strengthen your own soft and hard power in terms of microcomputer control.

On this issue, Ji Chongxuan fully agrees with Zhao Guoyang's opinion.

Just as Ji Chongxuan was secretly feeling in his heart, Zhao Guoyang had already continued to tell you the next one.

"The second application feature of foreign elevators in electrical control is the accurate control of the lifting stroke."

After glanced around, Zhao Guoyang said word by word: "Maybe everyone here knows that the control of the elevator is essentially a position control."

"The purpose is to ensure that the lift container is stopped accurately at the booked location, that is, the control of the elevator requires very high accuracy."

When Zhao Guoyang talked about this, Kong Dezhong below subconsciously inserted: "Mr. Zhao, what is the accuracy of this? Is there any within a range?"

Zhao Guoyang said "yes" and explained: "Our domestic mine hoists do not have strict regulations on the accuracy of stroke control requirements. However, in foreign countries, some well-known brands have requirements in this regard within ±2cm..."

"Ah, ±2cm? This...is too exaggerated!"

After Zhao Guoyang said this, before Kong Dezhong could speak, Liu Yan, a big-breasted girl over there, was already screaming.

Indeed, after everyone has worked hard these days and dismantled the mine hoist he purchased, they have a comprehensive understanding of some of its basic parameters.

As for the mid-sized mine hoist I purchased, the up and down directions are about 150 meters.

If it is a large or super large mine hoist, the number will be several times larger.

In other words, the error in travel control of mine hoists of well-known foreign brands is less than one ten thousand.

This number is really amazing.

Hearing Liu Yan's exclamation, Zhao Guoyang turned his eyes on her and slowly explained: "Although this number is amazing, it really exists."

"Due to the adoption of microcomputer control, these first-class foreign products can be centrally processed by collecting various sensing signals, such as angle pulse changes, wire rope slippage, wellbores, rollers and wire rope wear."

"In this way, the accurate position of the container can be calculated in a very short time, and it can be controlled and protected. As for general process control and stroke control, it can also be monitored by a microcomputer and used to complete it with a separate lower computer..."

Zhao Guoyang's remarks made the conference room silent.

Everyone is immersed in the amazing and emotional microcomputer technology of mine hoists abroad.

After everyone had digested their story a little, Zhao Guoyang continued to say: "As for this third application feature, it is the monitoring of the mine hoist during the lifting process."

"As we all know, as well as safety circuits, the monitoring of the lift process is an important part of modern lift control."

"In this regard, foreign first-class products usually use microcomputers to complete a series of parameter control during the improvement process."

Zhao Guoyang pried open his fingers and explained in detail: "For example, monitoring the operating conditions of each working condition during the lifting process; monitoring the operating status of each major equipment; monitoring the signals of each sensor, etc.."

"With this series of all-round monitoring, many times, various faults have been dealt with before they appear, which can effectively prevent accidents."

"In addition, microcomputer technology can also store, retain or print out various monitored parameters, and even connect to the upper computer and merge them with the entire large mine monitoring system, which is also very common."

When Zhao Guoyang talked about this, Ji Chongxuan had completely recognized the young man's technical strength in mine hoists.

There is no doubt that this young man’s understanding of the mine hoist product is by no means copying it from books or magazines, but has truly conducted in-depth research.

Because even professionals such as Ji Chongxuan are not fully aware of the electrical control technology of the mine hoists he just mentioned.

After a silence in the conference room, Zhao Guoyang finally spoke: "As for this last application feature, it is the safety circuit."

"In mine hoists, safety circuits refer to the link in which the hoist enters a safe protection state when mechanical or electrical failure occurs."

"It is not difficult for everyone to see from the literal meaning that the importance of safety circuit is the last link in the protection of equipment and operators, and its importance is incomparable..."

"At present, several mine hoists representing the international advanced level have used PC microcomputer technology in terms of safety circuits, making the safety circuit have a complete fault monitoring function."

"After using this latest technology, whether it is the elevator or the safety circuit itself, safety braking can be accurately implemented when there is a failure, thereby avoiding serious consequences."

After a brief pause, Zhao Guoyang smiled slightly and finally concluded: "Basically, I want to say about the application characteristics of mine hoists of international advanced level in electronic control."

"What else do you don't understand? You can speak freely. Let's discuss and study together!"

Looking at Zhao Guoyang's calm look with his hands spreading open, everyone in the conference room was full of admiration from the bottom of their hearts.

Even Liu Yan, a big-breasted woman who had been a little disdainful of Zhao Guoyang, had to admit her hard power in this regard.

Zhao Siyan, who was sitting next to Zhao Guoyang, was the one who felt the most deeply touched.

In fact, when Zhao Siyan was in school, she also participated in the design and improvement of some large-scale engineering machinery.

Although she appears as a helper most of the time, her understanding of this kind of heavy machinery is far better than that of ordinary undergraduate graduates.

Zhao Guoyang clearly had never participated in the research and design of heavy machinery after graduation, and might not even have contacted heavy machinery products.

It is precisely because of this that his story is even more amazing and impressing.

Just as everyone silently reviewed the series of Zhao Guoyang's just talk, Ji Chongxuan, who had not spoken, suddenly spoke out.

He glanced at Zhao Guoyang, and then slowly said to his students: "Everyone has heard what Mr. Zhao just said?"
Chapter completed!