Chapter 482 Thermal imaging camera getting closer
"Why does our first-generation self-heating food for individual soldiers taste like Sichuan and Shandong cuisine?" In the future, it came from a leader of a certain army who had a light and delicious diet. Questions of the soul.
"Chief, this is more durable for storage, and the Sichuan and Shandong cuisine is high in oil and salt, and is more suitable for heavy physical activities." This is a general answer.
The actual situation - the person who did this is a chef with dual degrees from Sichuan and Shandong.
After communicating all the ideas, Gao Zhendong asked the cooperating comrade: "Don't write my name on this matter. You can just do it as you like. For self-heating food, The last two are vacant, let Comrade He Yuzhu choose who to cook, and you have to listen to him.”
The comrade in the technical department nodded, thinking that Chief Engineer Gao probably didn't like these things.
Although Gao Zhendong didn't care, they looked at it and it was delicious. They turned around and asked two comrades to help them with the fireless self-heating patch, which could fill the gap.
"As long as you understand it, then, go and write something simple right away, hand it over and I'll sign it for you." Gao Zhendong didn't waste any time, the matter was not big, he would get it started right away, no need for a meeting or anything. .
Waiting for the comrades from the technical department to go out, Gao Zhendong turned to Shazhu and said: "I'll call Deputy Director Li later. Then you go to him. Remember, you must say yes. I ask you to go directly to him and tell him about this matter. After all, people are transferred from the logistics system.”
Although Gao Zhendong has the right to transfer people from the entire factory without affecting production. , but you still have to say hello.
"Why do you have to say that you asked me to find him?" Silly Zhu was a little confused.
“Because without my words, it would be inconvenient for you to go to him. Without my words, your logistics director would have to ask you for help.”
This is not Gao Zhen East Africa. If you want to be merciful to Shazhu, but don't do this, Shazhu himself has to sit on the wax first.
Si Zhu was not stupid, he went through the matter in his head, said "Oh~~~~", and smiled at Gao Zhendong: "It's still you, the superiors, who follow the rules. "
If Gao Zhendong hadn't said this, then according to the rules, Shazhu would have to go to the logistics director, or even the canteen director, to find Deputy Director Li. That would be a step beyond the sea, which is quite taboo. And it's not disciplined either.
And with this sentence, it is easier for Shazhu to explain. This matter was brought to us by the Third Factory, and the leadership is also in the Third Factory. Whatever the leader of the Third Factory says, I, Silly Zhu, have to do it. Cooperate, otherwise this good thing may not reach our logistics system. If you have any objections, please go to Chief Engineer Gao and tell them.
For the logistics system of the third rolling mill, it is undoubtedly extremely rare to be able to truly host a "research project", and it only happens once in a million years.
For them, this is a scarce resource, and it is needed for anything. Gao Zhendong directly pushed the silly pillar to Deputy Director Li with one stroke. The meaning is actually very obvious. Okay, Lao Li, you can count the share. For the rest, discuss it with Shazhu.
The Logistics Director and Canteen Director want to get involved, so they have to go to Deputy Factory Director Li. Deputy Factory Director Li will definitely say, "You have to go to Master He for this matter. He has a lot of say in this matter." "Heavily", and then go through Si Zhu to get things done. If Si Zhu is a favor, then you can get it.
They don’t want to get involved? Are you kidding me, whether you want to do something practical or want to take advantage of the east wind, you absolutely want this thing, and you can't wait to replace Silly Zhu with your own body.
Of course, Gao Zhendong can also say nothing and wait for Sha Zhu to report up from the canteen director. If someone really wants to cut off or do some tricks during the process, Gao Zhendong will step in to slap Sha Zhu in the face and stage a "canteen" scene. The 800 comrades from the technical department outside the door shouted, "Welcome the God of Cooking to return to his throne."
However, this kind of operation is actually quite stupid. It is just asking for trouble, and it is unnecessary trouble. You should make your attitude clear first, and others will understand and they will naturally cooperate. Rather than insisting on causing something to happen, making a few enemies out of nowhere, and then running to spread the bastard spirit.
If you do that, Gao Zhendong himself will be fine, but Silly Zhu will basically be useless.
Si Zhu got Gao Zhendong’s face-to-face instruction and turned to find the comrades in the technical department of the third factory. Although he was not good at writing materials, there were some things that he needed to understand. He was responsible for saying that the technical department Comrade is responsible for writing.
After Gao Zhendong started this matter, he put it down. The rest of the things were not his concern.
That afternoon, Liu Rongguo came over.
"Mr. Gao, the bismuth telluride matrix is ready. Take a look."
After that, he handed over a sample sealed in a glass tube and a test report. Gao Zhendong.
Gao Zhendong read the test report carefully and found that there was no problem.
"Rongguo, you go ahead and you have the matrix. Based on this matrix, you can make both P-type and N-type semiconductors."
After speaking, he opened the safe and took out part of the instructional materials for the semiconductor refrigerator that the system had extracted.
The P-type semiconductor is Bi2Te3-Sb2Te3, and the N-type semiconductor is Bi2Te3-Bi2Se3. They are both ternary solid solution alloys based on bismuth telluride. Once these two things are completed, the rest It's from the 1274 factory.
P-type and N-type semiconductors also need to be doped to adjust their temperature difference electromotive force and thermal conductivity, especially the former.
The last step is the welding and assembly of the guide bars and hot and cold end substrates.
Liu Rongguo has experience in participating in mercury cadmium telluride. That thing is actually a ternary solid solution alloy. After getting the instructions for these two materials, he glanced at it and said with confidence: "Mr. Gao, I'll finish it as soon as possible." After Liu Rongguo went out, Gao Zhendong turned around and called the Institute.
"Lu Gong, how is the sensor that I asked Factory 1274 to process through you?"
"Mr. Gao, it was done, but there is a problem."
“What’s the problem?”
“The 64-unit linear sensor you requested does not seem to be a big problem now. The mercury cadmium telluride crystals you gave are relatively large, but if it becomes popular , Calculate the size distribution of mercury cadmium telluride crystals based on statistical rules, it may be that most of the mercury cadmium telluride crystals cannot be made into 64 units, and the quantity is not enough.”
Gao Zhendong pondered for a moment on the phone: "What about the 96-unit unit? What's the situation?"
"The 96-unit unit basically cannot be made. The comrades of the 1274 Factory have tried their best, but it is still difficult. Cut out a sufficient number of mercury cadmium telluride particles. "
This is like those who sell jade. The rough stone seems to be quite large, but the cotton, ringworm, and cracks on the stone are removed, and the water head is removed. If the color is not good, there won’t be much left.
Fortunately, the mercury cadmium telluride crystal is man-made, and the consistency and crystal structure quality from the outside to the inside are far superior to that of raw jadeite. Otherwise, there would be nothing to do.
Gao Zhendong was not surprised: "Well, this is estimated. Is there any problem in using two crystals to make a sensor?"
Gao Zhendong's idea is to use two crystals to make 96 infrared photodiodes, and then form a 1*96 line array. As for the unevenness of the two crystals, he tries to compensate and adjust it through the back-end circuit.
In this way, during manufacturing, there will be an additional process of calibrating the deviation. The back-end circuit of each infrared photodiode must be designed to be adjustable, because no one knows how much the deviation will be, and it must be based on the calibration The output of the process is adjusted accordingly.
Although it is troublesome, Gao Zhendong just wants to know two things.
The first one was, he wanted to find out whether a 96*64 pixel thermal imaging camera could be used.
None... Gao Zhendong has seen lossless high-definition, from 1080P to 4K, but he has never seen the 96*64 total loss image quality output by this thermal imaging camera.
The picture with the lowest resolution he had ever seen was probably a compressed 320*240 picture deliberately converted into a compressed 320*240 picture in order to ensure low-speed satellite transmission when he was working on a tutor's project in his junior year. However, that thing was also in color, not a thermal imaging camera. It only looks like grayscale.
The second one is whether the consistency of this upper and lower combined line scan array can reach an acceptable level after back-end compensation.
Gao Zhendong has seen pictures that were destroyed during transmission before. The color parameters of the upper and lower halves are completely different. It is even possible that the upper half is black and white and the lower half is color. But if you think about it carefully, it seems like it is in a tank. It's not impossible to use it for fire control. The active rendering ability of the human brain is super strong.
As for Gao Zhendong’s two-in-one sensor issue, Lugong responded quickly.
“There is no problem with this, they have already done it.”
That's okay, it's just an experiment anyway.
But the line scan thermal imaging camera also has a supporting component, which is made at the Guangdong Research Institute, and that is the linear array scanning system.
As a line scan that requires continuous output of images, it is impossible to control the line scan sensor to reciprocate and scan from one end to the other.
This method either has to wait for the scanning head to return to the position before scanning the second frame, or it has to process and fuse the scanning data in two directions at the same time, which is unacceptable.
The most important thing is that the line scan sensor is very expensive, and it also comes with a lot of accessories such as cooling, parallel output lines, etc., dragging this thing to reciprocate, then the size and weight of this thermal imaging camera , reliability and availability are basically useless.
So in fact, the line scanning thermal imaging camera moves the reflector in the optical system, which is much more convenient to move.
The line scan thermal imager that Gao Zhendong proposed from the system uses an optical scanning system that is reflected by a rotating hexagonal prism. The structure is simple and lightweight, and it is relatively easy to manufacture and maintain. On the machine, the rotation Often easier to handle than reciprocating motion.
There are ready-made drawings in the thermal imaging camera supporting materials proposed in this system, so Gao Zhendong did not go to a unit like the Northeast Optics Institute. Anti-aircraft guns would not be used to kill mosquitoes.
On the contrary, it is the infrared air-to-air bomb developed by the Guangdong Research Institute. It has similar experience. The scanning of the orthogonal four-element detector is a light cone scan and a reflection scan of the rotating parts, but it is a circular scan instead of a line scan.
With these experiences, it is no problem to build an optical scanning system based on ready-made drawings.
(End of this chapter)