The Light of Domestic Products: The whole world begs me to sell
Chapter 226 A Strong Understanding of Unmanned Autonomous Buses
Chapter 226 A Strong Understanding of Unmanned Autonomous Buses
28nm lithography machine.
28nm is already the top level of domestic lithography machines in Yanguo.
In the current global lithography machine market, ASML, Canon and Nikon are the three largest suppliers, accounting for 99% of the global market share.
Canon and Nikon mainly produce 22nm "low-end" DUV lithography machines, while most of ASML's products are higher-end EUV lithography machines.
The actual difference between DUV and EUV is the light source. DUV refers to "deep ultraviolet light", and EUV refers to "extreme deep ultraviolet light". You can feel that EUV technology is more awesome by listening to the name.
This is indeed the case. The wavelength of the light source of the DUV lithography machine is 193 nanometers, and the wavelength of the EUV light source is 13.5 nanometers. Moreover, the EUV light source is not a natural light on the earth, and requires specific technology and equipment to manufacture it.
Under the principle that the shorter the wavelength of the light source, the greater the refractive index and the greater the energy, the DUV light source with a light source wavelength of 193 nm can generally only achieve a 25 nm process. Inet has achieved 10 nm by virtue of the workbench mode, but it will no longer be able to break through. 10 nanometers.
TSMC also forcibly used DUV light sources to produce the first generation of 7nm chips, but it was realized through DUV multiple exposures. Not only the process is complicated, but the yield rate is low. In fact, the so-called 7nm still has a lot of moisture, and TSMC also In the second generation of 7nm chips, the EUV light source was fully replaced.
In other words, DUV light sources are okay for 28nm and 56nm processes, but when it comes to 7nm and 5nm, DUV is almost useless and can only rely on EUV technology.
Now, ASML is the only supplier in the world that can produce EUV lithography machines!
It is no exaggeration to say that ASML has completely monopolized the global mid-to-high-end lithography machine market with EUV technology. According to the latest year’s sales, ASML’s lithography machines account for 91% of the market share, Nikon 6%, and Canon only 3%. %.
Of course, the 28nm lithography machine produced by Phoenix Group is only a DUV light source, but even "low-end" DUV technology is very rare.
In fact, although the Shanghai Microelectronics Factory has achieved mass production of 28nm lithography machines, it has been limited by production capacity, and the annual production capacity is only two or three units. For the 28nm lithography machine, Phoenix was able to get the 28nm lithography machine first under the operation of Gaoling Capital.
Hu Lai was already very satisfied.
Phoenix will soon have its own 28nm lithography machine. Although the manufacturing process is not too advanced, as long as the 28nm lithography machine can be successfully installed and produced, Phoenix Semiconductor will truly become a vertically integrated semiconductor company integrating design, manufacturing, packaging and testing, and sales. company!
Such an IDM model has undoubtedly established a strong guarantee for the chip security of the entire Phoenix Group!
……
News from America began to spread.
In the following time, the threat and ban of the American nation's embarrassing face once again sparked national discussions on the Internet. This time, the Phoenix Group, which was in the vortex, did not speak out again.
At this time, Hu Lai has devoted himself to the installation and commissioning of the 28nm lithography machine delivered by the microelectronics factory. It was only after he personally participated in the supporting installation project of the lithography machine that he truly realized why the lithography machine is the crown jewel of the semiconductor industry. Pearl.
Shanghai Microelectronics Factory is very professional. After confirming the order of Phoenix lithography machine half a year ago, it notified Phoenix Group half a year in advance to make corresponding preparations for the lithography machine factory.
The entire factory building where the lithography machine is parked has been specially reinforced with all the foundations, and even special places have been suspended. The purpose of this is because the lithography machine is very sensitive to vibrations, and slight vibrations will cause light source errors, resulting in batches. Wafers are all scrapped.
Not only the stability of the foundation, but also all lights in the workshop produced by the lithography machine have specified requirements. Instead of using the white light we usually use, we need to use a yellow light source with a longer wavelength.
Because the photoresist is very sensitive to short light, using a long-wavelength yellow light source is like turning off the light for wafer manufacturing, and the principle is the same as film exposure.
In addition to these, the lithography machine production plant also has particularly high requirements for air quality. The air quality needs to reach ISO level 1 or level 2. Such air quality is [-] times cleaner than the air environment requirements of medical operating rooms...
To meet such requirements, it is necessary to use a large number of advanced fully automated mechanical operations and high-efficiency fan filter units for 24-hour uninterrupted ventilation and filtration.
Apart from these harsh requirements, Hu Lai sighed even more, there are more than 3 parts of the lithography machine and the powerful power consumption required to manufacture the light source...
but.
Fortunately, although Shanghai Microelectronics Factory is only a lithography machine manufacturer, it is still fully prepared for the complete package of lithography machines.
Although the fan filter unit (FFU) and filter element of the factory cannot be made in China for the time being, and the effect of domestic photoresist is not satisfactory, etc., with the private help of microelectronics, the assembly and related supporting facilities of Phoenix 28nm photolithography machine are still It was done in an orderly manner.
According to the manager in charge of the project of Shanghai Microelectronics, the first batch of supporting equipment and materials, the microelectronics factory can find a way to help secretly, but after Phoenix Semiconductor is put into production, follow-up such as the replacement and upgrading of filter elements, photoresist materials, etc. The source of this is Phoenix's own internal affairs.
Hu Lai was already very satisfied.
No matter how difficult the photoresist is, how difficult the fan filter unit and filter element are, can it be difficult to pass the photolithography machine?As long as the most difficult problem of the lithography machine is solved, other supporting facilities are a matter of time!
soon.
The 28nm lithography machine provided by Shanghai Microelectronics Factory officially settled in Phoenix Semiconductor, and Phoenix Semiconductor also began to have the ability to produce chips.
While introducing a large number of advanced chip personnel, the research on the supporting industry chain of 28nm lithography machines has also quietly started within the Phoenix Group...
Fan filter units, filter elements, photoresist and other projects have been further developed. This time, not only is Phoenix cooperating with existing domestic companies, but Phoenix Research Institute has also begun to invest a lot of money in special research.
Today's Hu Lai is much more confident than before, and the current Phoenix Group can really tackle these difficulties by spending money regardless of cost.
He was busy arranging the work related to the 28nm lithography machine. After Hu Lai was busy for a while, the strongest blockade imposed by the American country on "stacking technology" also showed a strong oppressive force.
In Hu Lai's office at the Phoenix headquarters, Director Zhang was not in a good mood.
"Boss, it has been a month since America issued the ban."
"In the past month, all the chip design companies that have previously been authorized by our 'stacking technology' have recently successively stated that they will not launch chips with our 'stacking technology' for the time being, and they have secretly stated their concerns about the American ban."
"Yesterday afternoon, even the Huawei Group contacted us and clearly stated their concerns. They hope to maintain technical exchanges with us and hope that we can understand their difficulties."
After finishing speaking, Director Zhang sighed, obviously feeling a little discouraged.
Hu Lai was very understanding. When Yan Country was blocked by the American country, he had personally experienced such pressure.
"Old Zhang, our Phoenix Group has a good cash flow and different businesses in various industries. We are still under pressure from the American blockade, not to mention that these main businesses are in the chip industry, and there is no ability to resist risks at all. Small company."
"It's on the list today, and tomorrow the bank will withdraw their loan. The day after tomorrow, someone in the company will change jobs. In a few days, the company may be gone."
"In such cases, it is wise to choose not to use our 'stacking technology'."
Director Zhang also knows that this is the case, but every time he thinks about it, he still feels a little helpless in his heart. This is because the entire chip industry is controlled by others!
Hu Lai felt very helpless when he saw Director Zhang's lost look.
Although the Phoenix Group already has a 28-nanometer lithography machine, but if it really wants to realize the rise of the domestic chip industry, plus "stacking technology", at least a 14-nanometer lithography machine is needed.
A few days ago, Hu Lai entered the system to look at it. During this period of time, thanks to the sales of Phoenix laptops and all-in-one computers, the points in the system have reached more than 1000 million points. If things continue like this, they will be able to collect 5000 million points in less than a year. Points to buy 14nm lithography machine.
Just as Hu Lai was about to say a few words of comfort, Director Zhang quickly adjusted himself.
Factory Manager Zhang looked at Hu Lai, and did not continue the topic of chips. Instead, he handed the stack of documents in his hand to Hu Lai:
"Boss, let's not talk about the chip."
"Do you remember an unmanned automatic bus project arranged in the city before?"
Hu Lai was taken aback for a moment, and after a little thought, he immediately came to his senses.
I remember that Gao Ming found himself more than half a year ago. First, he purchased a batch of Phoenix "Panshi" all-in-one machines. Second, he hoped that Phoenix Auto could design a national first "unmanned automatic bus" for the Shancheng Bus Group. It is used for unmanned public transport at night.
At this time, I heard Director Zhang suddenly mentioning, could it be that there is progress?
He curiously took the information handed over by Director Zhang, and while looking down, he asked:
"Old Zhang, is there progress?"
As soon as he finished this sentence, his eyes were attracted by the information in his hand the next moment.
I saw that the first page of the information was a real shot picture, which happened to be a picture of a bus.
The appearance of the bus on the picture is completely different from that of a normal bus.
The whole bus is green and white, which looks like a new energy vehicle at a glance.
However, the entire bus does not adopt the square shape of the commonly used buses. Instead, the entire bus body is designed to be very rounded, and the length of the entire bus body is only about half of that of an ordinary bus.
Factory Manager Zhang showed interest when he saw Hu Lai, and finally showed a smile on his face:
"Boss, this is a project designed by the 'unmanned bus project team' specially established by our Phoenix Motors."
"Before we considered using the technology of BYD's electric bus K7. After all, we and BYD are strategic partners."
"However, in the actual test later, because the BYD K7 has a length of 9 meters and a width of 2.3 meters, using unmanned automatic driving technology on such a large bus requires a lot of calculations for safety and automatic driving. It was very large, so we settled on a smaller design.”
"We designed this small bus with a length of 6.5 meters, a vehicle of 2 meters, and a height of 2.8 meters. Its length is about the same as a small minibus."
"In this way, this small 'unmanned automatic bus' with 12 seats can not only perfectly adapt to the 'automatic unmanned driving technology' on urban roads, but also guarantee 50% risk safety judgment at a speed of 100KM/H, and also This makes the application scenario of this 'unmanned bus' more appropriate for 'night unmanned bus'."
"Even during the day, this unmanned bus can be used as a supplement to ordinary buses; when it is dispatched during rush hour, it can not only reduce the operating cost of the bus company, but also put in various routes."
Hu Lai thought about it carefully, and it was indeed the case.
His original idea was that an autonomous bus at night would be the same as an ordinary bus, except that there is no driver.
Unexpectedly, after the project team visited the site, they made a small version.
Such a small version is definitely cheaper to purchase than a large bus, and it is more suitable for the needs of "unmanned automatic" buses at night.
After all, there are a small number of people who take the bus at night, and 12 seats are completely enough.
Moreover, he keenly grasped what Director Zhang said just now, that is, during the peak hours of the day, it is used as an auxiliary supplement for ordinary buses, and the capacity is released according to the real-time road conditions of each line.
You know, there is a very troublesome point in the operation of ordinary buses, that is, the drivers in charge of each line are fixed, and the bus drivers are all running the bus lines they are familiar with, and generally they will not be temporarily arranged to run other line.
In this way, when the peak hours of commuting are really encountered, sometimes it is not that the bus company is unwilling to deploy more buses, but that there are not enough drivers.
And now.
This problem can be completely solved. The route can be set through the software, and the unmanned automatic driving technology can drive according to the pre-set route. There is no problem of not being familiar with the route at all.
Zhang Zhang's simple words aroused Hu Lai's interest, and Hu Lai continued to ask:
"Old Zhang, is there anything special about this shape? I think the overall shape is much more rounded than ordinary buses, and I think the roof is also a little curved."
Director Zhang nodded:
"Yes, the round design is indeed intentional by the project team."
After finishing speaking, watching Hu Lai change the subject:
"Boss, do you still remember the 'computer simulation wind tunnel' testing software we invested in and developed?"
"A few months have passed, and our software has taken shape. This time, the design of this 'unmanned bus' just benefited from the simulated wind tunnel software."
"It was we who used our free cloud computing power in Phoenix to simulate nearly 14 times on the software, and finally got an optimal drag coefficient scheme. We have tested this design scheme, which is [-]% higher than the traditional bus shape. endurance!''
"To put it in a disguised form, because our design scheme can make the same electricity run 14% more mileage, if the bus company counts hundreds of buses, it is not a small sum of money."
Hu Lai had an impression in his mind that the idea of "computer simulation wind tunnel software" was to consume the excess computing power of Phoenix, but he didn't expect that it would be fruitful after a short time.
but.
Before Hu Lai continued to ask, Director Zhang continued:
"We designed it to be circular, especially the roof also has a certain arc. In addition to the drag coefficient, we also used a brand new technology for the first time."
"We use a large area of solar panels on the roof, and the arc shape can just expand the solar receiving area."
"This 'unmanned automatic bus' can be parked in the parking lot to charge during the day, and consumes electricity at night. We have probably tested that if there is sufficient sunlight during the day, it can provide a cruising range of about 20 kilometers after a day of exposure."
Roof solar panels?
After Hu Lai was taken aback for a moment, he felt that 20 kilometers seemed almost meaningless.
but.
There was no sign of disgust on his face at all, but he asked Director Zhang excitedly:
"Is the real car built? I want to see it for myself."
……
PS: Thanks to 20201224125333174 for 100 coins.
The chapter was released yesterday, mainly because it is easy to enter automatically when it is related to M country. You have to wait for the editor to untie it.
Appeal to everyone, please subscribe if you like it, thank you
(End of this chapter)
28nm lithography machine.
28nm is already the top level of domestic lithography machines in Yanguo.
In the current global lithography machine market, ASML, Canon and Nikon are the three largest suppliers, accounting for 99% of the global market share.
Canon and Nikon mainly produce 22nm "low-end" DUV lithography machines, while most of ASML's products are higher-end EUV lithography machines.
The actual difference between DUV and EUV is the light source. DUV refers to "deep ultraviolet light", and EUV refers to "extreme deep ultraviolet light". You can feel that EUV technology is more awesome by listening to the name.
This is indeed the case. The wavelength of the light source of the DUV lithography machine is 193 nanometers, and the wavelength of the EUV light source is 13.5 nanometers. Moreover, the EUV light source is not a natural light on the earth, and requires specific technology and equipment to manufacture it.
Under the principle that the shorter the wavelength of the light source, the greater the refractive index and the greater the energy, the DUV light source with a light source wavelength of 193 nm can generally only achieve a 25 nm process. Inet has achieved 10 nm by virtue of the workbench mode, but it will no longer be able to break through. 10 nanometers.
TSMC also forcibly used DUV light sources to produce the first generation of 7nm chips, but it was realized through DUV multiple exposures. Not only the process is complicated, but the yield rate is low. In fact, the so-called 7nm still has a lot of moisture, and TSMC also In the second generation of 7nm chips, the EUV light source was fully replaced.
In other words, DUV light sources are okay for 28nm and 56nm processes, but when it comes to 7nm and 5nm, DUV is almost useless and can only rely on EUV technology.
Now, ASML is the only supplier in the world that can produce EUV lithography machines!
It is no exaggeration to say that ASML has completely monopolized the global mid-to-high-end lithography machine market with EUV technology. According to the latest year’s sales, ASML’s lithography machines account for 91% of the market share, Nikon 6%, and Canon only 3%. %.
Of course, the 28nm lithography machine produced by Phoenix Group is only a DUV light source, but even "low-end" DUV technology is very rare.
In fact, although the Shanghai Microelectronics Factory has achieved mass production of 28nm lithography machines, it has been limited by production capacity, and the annual production capacity is only two or three units. For the 28nm lithography machine, Phoenix was able to get the 28nm lithography machine first under the operation of Gaoling Capital.
Hu Lai was already very satisfied.
Phoenix will soon have its own 28nm lithography machine. Although the manufacturing process is not too advanced, as long as the 28nm lithography machine can be successfully installed and produced, Phoenix Semiconductor will truly become a vertically integrated semiconductor company integrating design, manufacturing, packaging and testing, and sales. company!
Such an IDM model has undoubtedly established a strong guarantee for the chip security of the entire Phoenix Group!
……
News from America began to spread.
In the following time, the threat and ban of the American nation's embarrassing face once again sparked national discussions on the Internet. This time, the Phoenix Group, which was in the vortex, did not speak out again.
At this time, Hu Lai has devoted himself to the installation and commissioning of the 28nm lithography machine delivered by the microelectronics factory. It was only after he personally participated in the supporting installation project of the lithography machine that he truly realized why the lithography machine is the crown jewel of the semiconductor industry. Pearl.
Shanghai Microelectronics Factory is very professional. After confirming the order of Phoenix lithography machine half a year ago, it notified Phoenix Group half a year in advance to make corresponding preparations for the lithography machine factory.
The entire factory building where the lithography machine is parked has been specially reinforced with all the foundations, and even special places have been suspended. The purpose of this is because the lithography machine is very sensitive to vibrations, and slight vibrations will cause light source errors, resulting in batches. Wafers are all scrapped.
Not only the stability of the foundation, but also all lights in the workshop produced by the lithography machine have specified requirements. Instead of using the white light we usually use, we need to use a yellow light source with a longer wavelength.
Because the photoresist is very sensitive to short light, using a long-wavelength yellow light source is like turning off the light for wafer manufacturing, and the principle is the same as film exposure.
In addition to these, the lithography machine production plant also has particularly high requirements for air quality. The air quality needs to reach ISO level 1 or level 2. Such air quality is [-] times cleaner than the air environment requirements of medical operating rooms...
To meet such requirements, it is necessary to use a large number of advanced fully automated mechanical operations and high-efficiency fan filter units for 24-hour uninterrupted ventilation and filtration.
Apart from these harsh requirements, Hu Lai sighed even more, there are more than 3 parts of the lithography machine and the powerful power consumption required to manufacture the light source...
but.
Fortunately, although Shanghai Microelectronics Factory is only a lithography machine manufacturer, it is still fully prepared for the complete package of lithography machines.
Although the fan filter unit (FFU) and filter element of the factory cannot be made in China for the time being, and the effect of domestic photoresist is not satisfactory, etc., with the private help of microelectronics, the assembly and related supporting facilities of Phoenix 28nm photolithography machine are still It was done in an orderly manner.
According to the manager in charge of the project of Shanghai Microelectronics, the first batch of supporting equipment and materials, the microelectronics factory can find a way to help secretly, but after Phoenix Semiconductor is put into production, follow-up such as the replacement and upgrading of filter elements, photoresist materials, etc. The source of this is Phoenix's own internal affairs.
Hu Lai was already very satisfied.
No matter how difficult the photoresist is, how difficult the fan filter unit and filter element are, can it be difficult to pass the photolithography machine?As long as the most difficult problem of the lithography machine is solved, other supporting facilities are a matter of time!
soon.
The 28nm lithography machine provided by Shanghai Microelectronics Factory officially settled in Phoenix Semiconductor, and Phoenix Semiconductor also began to have the ability to produce chips.
While introducing a large number of advanced chip personnel, the research on the supporting industry chain of 28nm lithography machines has also quietly started within the Phoenix Group...
Fan filter units, filter elements, photoresist and other projects have been further developed. This time, not only is Phoenix cooperating with existing domestic companies, but Phoenix Research Institute has also begun to invest a lot of money in special research.
Today's Hu Lai is much more confident than before, and the current Phoenix Group can really tackle these difficulties by spending money regardless of cost.
He was busy arranging the work related to the 28nm lithography machine. After Hu Lai was busy for a while, the strongest blockade imposed by the American country on "stacking technology" also showed a strong oppressive force.
In Hu Lai's office at the Phoenix headquarters, Director Zhang was not in a good mood.
"Boss, it has been a month since America issued the ban."
"In the past month, all the chip design companies that have previously been authorized by our 'stacking technology' have recently successively stated that they will not launch chips with our 'stacking technology' for the time being, and they have secretly stated their concerns about the American ban."
"Yesterday afternoon, even the Huawei Group contacted us and clearly stated their concerns. They hope to maintain technical exchanges with us and hope that we can understand their difficulties."
After finishing speaking, Director Zhang sighed, obviously feeling a little discouraged.
Hu Lai was very understanding. When Yan Country was blocked by the American country, he had personally experienced such pressure.
"Old Zhang, our Phoenix Group has a good cash flow and different businesses in various industries. We are still under pressure from the American blockade, not to mention that these main businesses are in the chip industry, and there is no ability to resist risks at all. Small company."
"It's on the list today, and tomorrow the bank will withdraw their loan. The day after tomorrow, someone in the company will change jobs. In a few days, the company may be gone."
"In such cases, it is wise to choose not to use our 'stacking technology'."
Director Zhang also knows that this is the case, but every time he thinks about it, he still feels a little helpless in his heart. This is because the entire chip industry is controlled by others!
Hu Lai felt very helpless when he saw Director Zhang's lost look.
Although the Phoenix Group already has a 28-nanometer lithography machine, but if it really wants to realize the rise of the domestic chip industry, plus "stacking technology", at least a 14-nanometer lithography machine is needed.
A few days ago, Hu Lai entered the system to look at it. During this period of time, thanks to the sales of Phoenix laptops and all-in-one computers, the points in the system have reached more than 1000 million points. If things continue like this, they will be able to collect 5000 million points in less than a year. Points to buy 14nm lithography machine.
Just as Hu Lai was about to say a few words of comfort, Director Zhang quickly adjusted himself.
Factory Manager Zhang looked at Hu Lai, and did not continue the topic of chips. Instead, he handed the stack of documents in his hand to Hu Lai:
"Boss, let's not talk about the chip."
"Do you remember an unmanned automatic bus project arranged in the city before?"
Hu Lai was taken aback for a moment, and after a little thought, he immediately came to his senses.
I remember that Gao Ming found himself more than half a year ago. First, he purchased a batch of Phoenix "Panshi" all-in-one machines. Second, he hoped that Phoenix Auto could design a national first "unmanned automatic bus" for the Shancheng Bus Group. It is used for unmanned public transport at night.
At this time, I heard Director Zhang suddenly mentioning, could it be that there is progress?
He curiously took the information handed over by Director Zhang, and while looking down, he asked:
"Old Zhang, is there progress?"
As soon as he finished this sentence, his eyes were attracted by the information in his hand the next moment.
I saw that the first page of the information was a real shot picture, which happened to be a picture of a bus.
The appearance of the bus on the picture is completely different from that of a normal bus.
The whole bus is green and white, which looks like a new energy vehicle at a glance.
However, the entire bus does not adopt the square shape of the commonly used buses. Instead, the entire bus body is designed to be very rounded, and the length of the entire bus body is only about half of that of an ordinary bus.
Factory Manager Zhang showed interest when he saw Hu Lai, and finally showed a smile on his face:
"Boss, this is a project designed by the 'unmanned bus project team' specially established by our Phoenix Motors."
"Before we considered using the technology of BYD's electric bus K7. After all, we and BYD are strategic partners."
"However, in the actual test later, because the BYD K7 has a length of 9 meters and a width of 2.3 meters, using unmanned automatic driving technology on such a large bus requires a lot of calculations for safety and automatic driving. It was very large, so we settled on a smaller design.”
"We designed this small bus with a length of 6.5 meters, a vehicle of 2 meters, and a height of 2.8 meters. Its length is about the same as a small minibus."
"In this way, this small 'unmanned automatic bus' with 12 seats can not only perfectly adapt to the 'automatic unmanned driving technology' on urban roads, but also guarantee 50% risk safety judgment at a speed of 100KM/H, and also This makes the application scenario of this 'unmanned bus' more appropriate for 'night unmanned bus'."
"Even during the day, this unmanned bus can be used as a supplement to ordinary buses; when it is dispatched during rush hour, it can not only reduce the operating cost of the bus company, but also put in various routes."
Hu Lai thought about it carefully, and it was indeed the case.
His original idea was that an autonomous bus at night would be the same as an ordinary bus, except that there is no driver.
Unexpectedly, after the project team visited the site, they made a small version.
Such a small version is definitely cheaper to purchase than a large bus, and it is more suitable for the needs of "unmanned automatic" buses at night.
After all, there are a small number of people who take the bus at night, and 12 seats are completely enough.
Moreover, he keenly grasped what Director Zhang said just now, that is, during the peak hours of the day, it is used as an auxiliary supplement for ordinary buses, and the capacity is released according to the real-time road conditions of each line.
You know, there is a very troublesome point in the operation of ordinary buses, that is, the drivers in charge of each line are fixed, and the bus drivers are all running the bus lines they are familiar with, and generally they will not be temporarily arranged to run other line.
In this way, when the peak hours of commuting are really encountered, sometimes it is not that the bus company is unwilling to deploy more buses, but that there are not enough drivers.
And now.
This problem can be completely solved. The route can be set through the software, and the unmanned automatic driving technology can drive according to the pre-set route. There is no problem of not being familiar with the route at all.
Zhang Zhang's simple words aroused Hu Lai's interest, and Hu Lai continued to ask:
"Old Zhang, is there anything special about this shape? I think the overall shape is much more rounded than ordinary buses, and I think the roof is also a little curved."
Director Zhang nodded:
"Yes, the round design is indeed intentional by the project team."
After finishing speaking, watching Hu Lai change the subject:
"Boss, do you still remember the 'computer simulation wind tunnel' testing software we invested in and developed?"
"A few months have passed, and our software has taken shape. This time, the design of this 'unmanned bus' just benefited from the simulated wind tunnel software."
"It was we who used our free cloud computing power in Phoenix to simulate nearly 14 times on the software, and finally got an optimal drag coefficient scheme. We have tested this design scheme, which is [-]% higher than the traditional bus shape. endurance!''
"To put it in a disguised form, because our design scheme can make the same electricity run 14% more mileage, if the bus company counts hundreds of buses, it is not a small sum of money."
Hu Lai had an impression in his mind that the idea of "computer simulation wind tunnel software" was to consume the excess computing power of Phoenix, but he didn't expect that it would be fruitful after a short time.
but.
Before Hu Lai continued to ask, Director Zhang continued:
"We designed it to be circular, especially the roof also has a certain arc. In addition to the drag coefficient, we also used a brand new technology for the first time."
"We use a large area of solar panels on the roof, and the arc shape can just expand the solar receiving area."
"This 'unmanned automatic bus' can be parked in the parking lot to charge during the day, and consumes electricity at night. We have probably tested that if there is sufficient sunlight during the day, it can provide a cruising range of about 20 kilometers after a day of exposure."
Roof solar panels?
After Hu Lai was taken aback for a moment, he felt that 20 kilometers seemed almost meaningless.
but.
There was no sign of disgust on his face at all, but he asked Director Zhang excitedly:
"Is the real car built? I want to see it for myself."
……
PS: Thanks to 20201224125333174 for 100 coins.
The chapter was released yesterday, mainly because it is easy to enter automatically when it is related to M country. You have to wait for the editor to untie it.
Appeal to everyone, please subscribe if you like it, thank you
(End of this chapter)
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