But believe it or not, just like that, the salespeople in those car dealerships will say to the people who buy the car, "At this price, you've got a big deal for this model with a DVD sound system." ”

God knows, in fact, if these guys choose a model without DVD, the whole car will be at least 15,000 yuan cheaper, even if you really like the car DVD system, go to the car decoration store and install a set, talk about the price, and the transaction price will not exceed 5000!

Don't say that the original car is of good quality, the original car is the most problematic, Zhang Lan knows that a brand of cars in Japan, the car bought by a certain brother, has changed fourteen car DVDs in two years, if one is still possible, but if there are fourteen faults, then it is really called hell! If there is no problem with the DVD products chosen by this car manufacturer, the ghost doesn't believe it! In order to reduce costs and increase profits, automobile manufacturers are trying to reduce procurement costs as much as possible, especially the Japanese, who are the most ruthless, and the purchase price is close to the cost price.

This is not bad, in order to ensure your own profits, you can only reduce the profits of others. Just to be able to maintain their own profits, other supporting manufacturers are not stupid: okay, I will give you this price, but I will replace the original steel parts with iron; I replaced the original 0.8 mm thick shell with a 0.5 mm thick one, I chose the worst laser head, and I chose the cheapest electrical components, and I gave it to you at this price! The problem is strange, and in the end it is the car manufacturers who are unlucky.

Therefore, if you have money, you can earn less, and don't think that you will put all the money in your pocket by yourself, that is the most correct choice. This principle is also applicable to the on-board head-up display system.

"Does it have to be low?" Hearing Zhang Lan say this, Varoga gestured while muttering in his mouth. "It should be this way, no, no, no, it shouldn't be done, it should be like this."

Zhang Lan watched Valoca, a guy who seemed to be a half-immortal, chattering there non-stop, and already understood in his heart: It seems that this guy has been immersed in the car head-up display system he proposed.

"But pressing such a head-up display shelf directly in front of the driver," after a long pause, Varroga still hesitated, "will it affect the aesthetics of the vehicle?" ”

Hearing this guy's words, Zhang Lan looked annoyed. I almost wanted to grab this guy's hair and beat him up: what the hell did this guy think, why hasn't he liberated his mind from designing fighter jets?

But this guy immediately comforted himself again: Well, yes, this time there is finally progress! Although the mind has not yet been completely pulled out of the idea of designing a fighter jet, it has already begun to think about the aesthetics of the vehicle.

"Then let me ask you," comforting himself like this, Zhang Lan finally felt a lot more comfortable in his heart, and then asked, "The war so, use a shelf to fix the head-up monitor in front of the pilot's eyes. Is it a two-pronged consideration? One reason is to make the heads-up display closer to the pilot, so that the pilot can more intuitively see the flight information and weapon status information of these aircraft; Another reason is not because the windshield in front of the ground of a fighter is generally a large arc, and if the data is displayed on such an arc, most of the data displayed is distorted, so there is no practical concern. Varoga nodded.

I didn't expect to let myself be blinded. Zhang Lan secretly rejoiced. "So can we make a hypothesis? Suppose the front windshield of the aircraft is a plane that is nearly vertical. Instead of an inclined, arc greatly rounded. So is it possible to directly replace the ground with a header display for the front windshield? ”

"That's right." Heard Zhang Landi's words. Varoga thought about it very seriously. It seems to be the same thing: if the ground shield in front of the fighter is a near-vertical ground plane. Then it is not impossible to directly replace the front windshield with a head-up display. It's just that it's impossible. How fast the airplane goes! So vertically a front windshield. How much additional drag will it bring to the aircraft's flight on the ground?

"That's not it." Zhang Lan clapped her hands. "Compared to the front windshield of a fighter jet. The front windshield of a car is close to a flat surface. And in relation to fighters. Its windshield head-up display ground is needed. In that case. Why not integrate the head-up display with the front windshield of the car? "Seeing what Valroga meant. Zhang Lan added. "Don't forget. How fast is the ground speed of the fighter. And how fast is the average car? Vertical or inclined front windshield. The impact on automobiles is far less than on airplanes. ”

"Makes sense!" Heard Zhang Lan say this. Think back to the shape and angle of the front windshield of your car. Varoga's eyes lit up. "It's a very feasible solution."

I remembered that I was thinking about installing a bracket in the car to fix the HUD. Valoka was embarrassed: What has his head been thinking about all these moments?

"That's it." Zhang Lan nodded. "Then you can divide some of your people and start researching this technology. Don't be very demanding at first. As long as you design the head-up display system to display the current speed of the car, engine speed information, gear information and remaining fuel information. Slowly consider upgrading later. ”

"No problem," Valroga thought for a moment, looking a little embarrassed, "but ......"

"But what?" Looking at Valoca's embarrassed look, Zhang Lan was a little curious: this guy was struggling, could there be anything that made them feel embarrassed? Shouldn't it? For them, this thing should be as simple as asking a mathematician to solve a one-dimensional equation and a chemist to say the molecular formula of water, right? "Well," said Valoga, "if we are going to do this research, we will definitely need a car to conduct the test, can the company provide us with a car for the research?" ”

"Yes, no problem!" Zhang Lan hurriedly said and patted his head: Stupid, how can such a thing be forgotten? Without a car with an on-board computer system for them to practice and explore, let them dream here, how can they possibly get what they want? "So, I'll go back and talk about it, and I'll send you the car tomorrow."

"It's just that the front windshield of the car is treated like this, and the cost is much higher." Valroga said. ,

"That's right," Zhang Lan nodded: Isn't it, the front windshield and head-up display are integrated, can the cost not be high? An ordinary front windshield is a few hundred yuan, such a front windshield with an integrated head-up display system, even if it is according to what I say, the cost is controlled at about 5,000 yuan, and the price of this front windshield is more than 5,000 yuan.

"This," suddenly thought of a possibility, Zhang Lan hurriedly advised, while talking and gesturing, compared an area of about 25 cm X 25 cm, "When designing this kind of front windshield, as long as there is such a large area in front of the driver for the head-up display system to display various data information, you don't design the entire windshield into a super large one, although this situation is unlikely, but it has to be prevented, Who knows if this guy who is used to working on fighter jets, avionics and aviation display systems can do such a thing?

"Is it that big?" Valroga looked at the area that Zhang Lan compared, and then thought about the little data that needed to be displayed on his car, and said, "It seems to be a little bigger." ”

I also compared with Zhang Lan, and the area was slightly smaller than Zhang Lan's, "I think 20 cm X 20 cm is enough, in fact, this head-up display system needs to display very little data, such a large area can not be used at all, not only wasteful, but also increased a lot of costs." ”

"No problem, you have the final say on this," Zhang Lan nodded, "I'm just a suggestion, not a decision, how to do it, how big it is, you can do it yourself according to the actual situation." ”

"I want to remember you saying that the cost of a head-up display with a green signal is lower?" I suddenly remembered that the last time Varoga introduced himself to their product that copied the future F-22 cockpit display system, Varoga seemed to have said that the head-up display he used used red character lines to display the signal, which showed the signal better, while the traditional head-up display that used green display information was cheaper.

"Then let's do green first," Zhang Lan said, "Reduce costs, and when the technology matures in the future, it's not impossible for us to engage in colored ones." "Yes." This time, Varroga rarely reached an agreement with Zhang Lan on the same matter, "At present, the use of green display is indeed the cheapest and most reliable technology, and this technology can be slowly upgraded in the future to add more functions." ”

Valroga's idea coincides with Zhang Lan's idea: Zhang Lan's original idea was to start with the simplest green display technology, and then gradually transition to color and multi-function, and finally even if the satellite navigation function is integrated into it, it is not impossible - anyway, it will not take ten years, the car navigation system has been flooded, and even hundreds of thousands of low-level cars are equipped with satellite navigation systems.

"That's right," Zhang Lan said, thinking of the manufacturing technology of the head-up display system used in later cars, "I don't know how the head-up display on your fighter jet is manufactured, but in terms of on-board head-up display technology, I have looked through some foreign information on this technology, but I can provide you with a little advice as a reference." ”