Chapter 84 Frequency Measurement Dock Reconstruction

Zhang Zhimu heard Yang Yulin say that Yang Chang was looking for him, so he immediately picked up the phone and called Yang Chang. It happened to be Yang Chang's call, and Yang Chang said: "Mr. Zhang, we have no choice but to look for you." You let us get the audio oscillator, we got it. However, every sound is different, and it is difficult to debug it the same. What do you think? ”

Zhang Zhimu said: "The frequency of oscillation is different. I think we'd better start with a frequency meter. Wait, I'll go to you right away. ”

Zhang Zhimu came to Yang Chang's laboratory and said to Yang Chang: "We now need to solve a problem of frequency standards and measurements. Otherwise, we will not be able to carry out a lot of work in the future. Now gather your people together, and I will give you a lecture. ”

Hearing that Zhang Zhimu was going to give a lecture, Yang Chang and the people in their laboratory were all overjoyed when they heard it. They know that every time Zhang Zhimu teaches a class, they learn a lot of exciting things. Yang Chang hurriedly ran out and gathered all his people.

In the face of these people who came to listen to the lecture, Zhang Zhimu said: "With the development of our technology, we must pay attention to an increasingly important issue, which is the problem of standards. For example, our current and voltage meters need to be standardized, and resistors, capacitors, inductors, as well as our electronic diodes and transistors need to be standardized. There is also the issue of frequency, which we are going to study today, which also needs to be standardized. Whether it's our electronics, or any other industry, if we want to develop further, we need to spend a lot of effort on standards. ”

Yang Chang and the others have also discovered this problem until now, so they can't help but talk about it below.

After everyone was quiet for a while, Zhang Zhimu said: "We found that the sound of the audio oscillator is a little different today, that is, the frequency of the oscillation is different, if you want the frequency of the audio to be the same, we need to detect the frequency." This is the frequency meter. To solve this problem, we first need a standard frequency source. ”

In fact, regarding the problem of this frequency source, Zhang Zhimu also spent some brains before, and without a standard frequency source, there is no calibration frequency meter. This was not a problem at all in previous lives, but it is a big problem here. But fortunately, those who make clocks in the kiln have made the accuracy of the clocks very high. High every day does not differ within one to two minutes. The accuracy of seconds is (2*60)/(24*60*60)=0.1388889%. Then the accuracy of a stopwatch corrected with such a clock can basically reach this level of accuracy.

If a DC motor with a 1:50 gear reduction device, through the motor speed control, so that the speed of the decelerated gear is one revolution per second, it can be easily measured with a stopwatch, so that the gear and the stopwatch pointer are synchronized. In this case, the speed of the motor is 50 revolutions per second. If the gears coaxial to the motor are combined with a gear ratio of 100 to 1, the speed of the accelerated gears is 5,000 revolutions per second. We build a generator with multiple coils and rotors on the same shaft of this high-speed gear, and this generator can send out high-frequency alternating current. By changing the gear ratio of the acceleration device and increasing or decreasing the number of coils of the rotor of this AC motor, it is possible to generate AC signals of different frequencies.

With this standard signal source, it is time to study the frequency meter.

The frequency meter should first amplify the input signal, use the diode to strobe the positive signal gating, and then use the RC differential circuit to turn the signal into a sharp pulse signal, and then through a triode to amplify the sharp pulse signal while shaping, that is, by setting the static value of the gate to make the signal conduction have a threshold, the triode is not conductive when the small signal is not on, and the large signal is saturated, so that the signal basically becomes a pulse signal of equal amplitude. That is to say, after the signal is input into the frequency meter, it becomes a square wave pulse signal with the same amplitude as the frequency of the input signal, and after such a signal passes through an integral circuit, the output DC signal is only related to the frequency of the input signal. In this way, with this DC signal control indication header, you can intuitively see the frequency of the input signal.

By inputting a signal of a known frequency into the frequency meter, the frequency scale can be marked on the dial. However, the input differential circuit and the subsequent integral circuit parameters are different for different frequency ranges, so the frequency meter also needs different gears. When using it, it is necessary to switch according to the situation.

Zhang Zhimu gave Yang Chang a detailed analysis of these circuits. Zhang Zhimu knew that if Yang Chang and the others could master these things, it would greatly inspire and learn from their other work in the future, and also greatly expand the scope of their thinking.

Yang Chang: They really didn't expect that circuits could be used like this. Watching them desperately take notes, Zhang Zhimu was also very pleased. He knows that this kind of learning is the most efficient, and after learning them, they will immediately use circuits to verify this knowledge, and the knowledge will be digested very solidly.

However, after Zhang Zhimu finished speaking, he said to Yang Chang: "I want to give you an urgent task. You have to organize a group to work on the current adjustment circuit of the welding machine, and then make a welding machine controller that can be moved around. For specific parameters, you have to discuss them with Lu Wenchen, who is engaged in electric welding. I'll go to Lu Wenchen early tomorrow morning and tell him about it. Then I asked Lu Wenchen to come to you. You get your group to work well with him. ”

Yang Chang said: "Don't worry, Mr. Zhang." I'll arrange this right away. In addition, our porcelain capacitors have already made a bit of an eyebrow. In addition, several of our machining equipment have also arrived, and soon our single and double adjustable capacitors will be made. That horn horn may have been made first, but I haven't found the right cardboard yet, so I can't get a paper cone horn. ”

Zhang Zhimu said: "You don't have to look for the right kind of cardboard, there is no ready-made one, you have to find your own way." However, I want to tell you now, if you get the frequency meter right, our electronics industry will soon take a leap forward. At that time, we will be able to engage in wireless telegraphy and wireless telephone, and you must hurry up. ”

Lu Wenchen is now a busy man in the kiln, and he already has more than 100 hydropower welders under his command. Their people are almost too busy all day long. He didn't expect Zhang Zhimu to look for him early in the morning, so when he received a call, he hurriedly ran over.

Zhang Zhimu hadn't talked to Lu Wenchen for a long time, and after Lu Wenchen sat down, Zhang Zhimu asked Yang Yulin to pour him tea.

Zhang Zhimu said: "Wenchen, you have changed a lot during this period of time? It's not the big boy who speaks a little shy anymore. How's it going, is your father okay? ”

Lu Wenchen smiled and said, "My father is very good, I think he is busier and more energetic. ”

"Wenchen, how many of you are there now?" Zhang Zhimu asked.

"Less than two hundred." Lu Wenchen thought about it and answered.

Zhang Zhimu said: "It's not enough, Wenchen." The development of our kiln is so fast, how can this electric welder be enough. You still have to train more people, and you use the method of master and apprentice, which is really slow. I have an idea, would I like to hear it? ”

Lu Wenchen hurriedly sat up straight and said, "I want to listen, Mr. Zhang, you can say it!" ”

Zhang Zhimu said: "My advice is that you must not get caught up in any specific work. You have to quit and set up a welding technology laboratory, organize people to specialize in various welding techniques, and then start a welding technology school. In the future, we will be inseparable from welders in various factories. You train welders for each factory. If you come up with a good welding method, you can bring them back and train them. You also have the task of leveling the welders. In the future, people at different levels will also have different salary packages. Is that good, you say? ”

"It would be nice to be able to do that. We are now overwhelmed by welding tasks every day. All the tasks are urgent, we have little time to explore new technologies, and we don't have time to work on a lot of ideas. Lu Wenchen was very happy to hear Zhang Zhimu's suggestion.

Zhang Zhimu said: "Well, this matter will be decided today." I want to talk to Li Yunhe. One more thing, I want to ask you, why do you use less electric welding now and more neuterine welding? ”

"Ahh That's what you're talking about. We use cyan welding because it is easy to control clay welding, but electric welding is not easy to control, especially when precision welding is not easy to control. Lu Wenchen said.

Zhang Zhimu said: "I know that your electric welding does not have current control, so welding is not easy to master. I asked Yang Chang yesterday to make a current controller for you, so that when you weld, you can use a large current if you are willing to weld with a large current, and use a small current if you are willing to weld with a small current. With this stuff, you will be like a fish in water. ”

"Really? That's great! Lu Wenchen knew the usefulness of what Zhang Zhimu said.

Zhang Zhimu said: "Soon we are going to build a steel-hulled ship, and it is not enough for your welders to go up." During this period of time, you need to recruit an additional batch of welders for rapid training. Otherwise, there is no hurry. By the way, you can go to Yang Chang today, and they will set up a special team for you to engage in electric welding machines. ”

Although the front line is still facing each other, the kiln gang people seem to have forgotten about this, and the whole kiln gang is busy again.

As soon as Zhang Zhimu sent Lu Wenchen away, Lu Bingyi called Zhang Zhimu and agreed that Lin Zongwei and they would come to talk about shipbuilding in the afternoon.

Lin Zongwei and the others made great changes to the design according to the improvement suggestions discussed last time. In addition to adding air conditioning and cold storage on the ship, the steam engine has also been greatly modified. Zhang Zhimu was very satisfied with these changes, but Zhang Zhimu proposed that each cabin should be equipped with the position of the telephone and the broadcast horn. Especially when stringing, it should be carried out uniformly. There are also boats that can lift lifeboats and traffic speedboats, and there must be both manual and electric ways to work.

Lin Zongwei said that these are easy to do, because they do not need to change the overall structure of the ship.

Zhang Zhimu also knew that this was the icing on the cake. However, Zhang Zhimu said to them: "Building a steel ship is different from building a wooden ship, and the dock at our Lingshui Wharf must be renovated." Because the big pieces we get on board are very heavy. Whether these large items can get on the ship is a big question. Not only will the dock be changed, but a large workshop will be built next to it, and many things will be welded here and hoisted onto the ship. ”

Lin Zongwei asked: "Mr. Zhang, can you tell me how this dock needs to be rebuilt." ”

Zhang Zhimu said: "My opinion is that the dock should be converted into a permanent dock, and the surrounding area of the dock should be built with bricks and stones. The depth of the dock should also be excavated a little deeper. The most important thing is to build a rail-mounted gantry crane. ”

Lin Zongwei, Lu Bingyi, and Shi Tao looked at each other, but they didn't know what a rail-mounted gantry crane was.

Zhang Zhimu knew their doubts and said: "Let's wait a while, Li Yunhe will arrive in a while, and when he arrives, I will introduce this gantry crane together." Because they also had to ask Li Yunhe to build a crane. ”

Li Yunhe still attaches great importance to this matter, and he brought a few people who had worked on other cranes before.

Zhang Zhimu took out a few sketches. In order to let everyone understand, Zhang Zhimu drew the general structure of the gantry crane on the blackboard.

According to the situation on the spot, Zhang Zhimu painted a cantilever gantry crane, its metal structure is like a door-shaped frame, two feet are installed under the bearing girder, which can walk directly on the track on the ground, and there are overhanging cantilever beams at both ends of the main beam. For the sake of safety, the crane adopts a double girder door structure. The main beam adopts a box-shaped structure. The hoisting trolley walks on two main beams.

After listening to Zhang Zhimu's introduction, everyone felt that if there was such a crane, it would be too convenient to lift things.

Lu Bingyi said: "If there is such a crane on the wharf, it will be very convenient to load and unload goods. What's special is that everything that was previously afraid to be transported by ship can be transported. ”

Li Yunhe said: "It's good, but it costs a lot of good steel." Mr. Zhang said, you need it to be able to lift how many things you have, right? ”

Zhang Zhimu smiled and said, "It's hard for me to say this." Let's discuss how many things you need to lift, right? But you have to set aside a margin to prepare for the future. ”

The matter of shipbuilding was discussed for a whole afternoon. In the end, it was decided to build a shipyard near the dock at Lingshui Pier.

During this time, Zhang Zhimu and the others were busy with kiln production and other things, and Liu Yun and the others had already started preparations for the reorganization on the basis of completing the four divisions in front, and they were based on the five regiments and reorganized into the skeleton of five divisions. Just wait for Qin Peng and them to replenish the recruits after they finish training. If these five divisions are reorganized, there will be nine reorganized divisions in Yaogang, and there will be an infantry regiment that has not been reorganized. Yan Boju and Yang Jing also have more than 15,000 police forces on their side.

Zhang Zhimu knew that this was a huge expense, but he also knew that the combat effectiveness of this unit was also unrivaled. Until now, Zhang Zhimu has a little sense of security from his heart.

After a rainy night with Huang Yukun, Zhang Zhimu didn't want to sleep, so he took Huang Yukun's hand and said, "Yukun! To be honest with you, it's only today that I feel secure. ”

Huang Yukun leaned on Zhang Zhimu and said, "Since you came to me, I have never felt anything to be afraid of. ”

Zhang Zhimu said: "Only now, whether it is the current emperor or Li Zicheng, I am not afraid of them." Our army has really grown stronger. ”

"Then what are you waiting for, don't beat Li Zicheng away earlier. It always feels like a thing to keep them there. Huang Yukun said.

"Alas! There is no hurry. Our troops have just been reorganized, and we still need some time to train our troops. If they hit it, they will fight it all the way to the end. There will be no chance to come back in the future. When the battle is over, they will be stationed on all sides. So that we can sleep soundly. Zhang Zhimu said.

Huang Yukun looked up at Zhang Zhimu and asked, "Where do you want to fight?" ”

Zhang Zhimu put his arm around Huang Yukun and said, "At least we have to beat Li Zicheng out of Shanxi." However, they originally wanted to attack Henan immediately, and then I persuaded them to attack Shaanxi first. But my current idea is to wait after laying down Shanxi. We want to gain a foothold in Shanxi. ”

Huang Yukun said: "This Shanxi is not small, why are you so greedy?" ”

"You don't understand, just occupy Shanxi, we can't occupy it. Elsewhere, we're still going to fight. It's just that I don't want to fight now, our guys aren't ready to take over that big place. Although, our army is not afraid to fight anyone. But as the front lengthens, our problems will be exposed. So you need to be steady. Zhang Zhimu said.

Huang Yukun said: "I don't understand your business. However, I think Yang Yulin's female soldiers will be expanded, and they all listen to Yulin. Yang Jing's police force has also expanded, and I feel more at ease with these people. ”

Zhang Zhimu sighed and said, "You, a little family." If those armies are unreliable, what is the use of their men? Go to sleep! ”

After Zhang Zhimu arrived at the command center, Ouyang He talked about the reorganization of the army. Zhang Zhimu said: "After the reorganization, we will have nine reorganization divisions, that is, there are 28 regiments. During this time, Liu Yun and they have worked hard, and you will save a lot of trouble with him. ”

Chen Yufeng said: "Yes, this kid used to worry about his life in the Huwei Dart Bureau. ”

Zhang Zhimu said to Chen Yufeng and Ouyang He: "I made a bet with Li Jing that I would personally train a special force and compete with his special forces. So I want to pick out some good guys from our ranks. How do you guys take a look? ”

When Chen Yufeng heard this, he said, "Okay! It should be for Li Jing's little rabbit cub to kill the majesty, now he doesn't know the north a little, it's time to make him sober up. Chen Yufeng's words were like this, but he was thinking in his heart, Zhimu can study this and that, will he personally lead the troops. He was also really interested in Zhang Zhimu's idea.

Ouyang He also said: "I also want to see what kind of soldiers Mr. Zhang has trained?" ”

Zhang Zhimu said: "Okay! In this way, I told Liu Yun that there are now more than 20 regiments of infantry and more than 10,000 cavalry. We're going to have a big competition. Let them select ten of the best soldiers for each regiment and come out to compete. See which regiment has the best soldiers? ”

Chen Yufeng also came to the spirit and asked: "What is it all like?" ”

"The first is physical fitness, such as armed off-roading. There are also main events such as shooting, martial arts, lurking, swimming, and I will pick some other sports when the time comes. Zhang Zhimu said.

Ouyang He said: "This is good, everyone will work hard for honor." In this way, good soldiers can be selected. ”

Ouyang He said: "This order is under the name of the command center. During the game, Mr. Zhang personally commanded. ”

Zhang Zhimu said: "Tell Liu Yun." Give them some time for each regiment, and each of them will have to select people themselves. Let them all be ready to prepare. Give them at least a week's time. ”

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Paragliding, rubber model airplanes, piano making, and building an air force. --Progress of "Memories of the Southern Song Dynasty".