Siheyuan: Starting from a fitter

Chapter 275 TV Production Line
On May 1978, 5, Li Guocheng, accompanied by Lao Luo, came to Shenzhen again, planning to purchase land to build a scientific research building in Luohu District, but communication with the local government failed.

In August of the same year, Longhua Home Appliances Co., Ltd. used electronic watch and LCD patents to replace the patents of televisions, refrigerators, air conditioners, telephones and fax machines from Xiaori and Samguo respectively.

One of the design teams of Longhua Home Appliances became familiar with the principles of refrigerators and air conditioners.

Li Guocheng personally led another team, purchased Xiaori’s new TV for principle analysis, and optimized the internal signal processing part, focusing on filter processing, small signal amplification and automatic gain control.

The purpose is to strengthen the anti-interference ability, extract channels accurately, and ensure image stability.

Except that the front-stage radio frequency signal receiving and processing circuit still uses discrete components, all other circuit function modules are changed to dedicated chips.

Features of the final product: clear signal, low power consumption, low cost, long life, and easy maintenance.

To redesign a TV, Li Guocheng used three design teams: home appliances, smart core and structure, which lasted more than a year.

The reason why it is so slow is mainly to train the team.

After the samples came out, small batch trial production was carried out, and the performance indicators all met the design expectations.

The group's legal department also submitted a patent application.

At the current stage of tube TV and transistor TV, Longhua Electronics launched integrated circuit TV, directly entering the 3.0 era, far ahead of all current TV manufacturers.

In September 1979, Longhua Technology welcomed a Chinese inspection team, including the deputy mayor of Peng City and a senior executive from the Ministry of Science and Technology. The lineup was quite large.

This time is just right for China to introduce a large number of TV production lines. If it succeeds, it will not only leave a large amount of introduction fees for China, but also introduce advanced products.

Therefore, the appearance of this inspection team made Li Guocheng extremely excited.

Li Guocheng's gaffe also caused the accompanying officials from the Ministry of Science and Technology to lower their expectations, thinking that it was related to the Hong Kong Governor and the purpose was to enhance the status of Longhua Technology.

When the visitors put on white coats and entered the clean, bright and spacious production line display workshop, everyone felt as if they had entered the future world.

The production line modules are reasonably arranged. In order to highlight the industrial aesthetics, each module has been designed as a whole, with orderly heights and well-proportioned layouts.

For circuit board soldering, Li Guocheng directly designed the wave soldering and reflow soldering processes and equipment.

The welded boards are set up by a beautiful girl and put into a special fixing box. Once filled, they are hung on the cleaning and drying assembly line.

After the finished circuit board came off the production line, several young and beautiful girls used high-power magnifying glasses to inspect the solder joints on the bright workbench.

Put the inspected boards into a special anti-static storage box, and put them on the conveyor belt when they are full.

The next step is to put it on a dedicated testing station to test the signals at each test point of the circuit, and the results are directly displayed on the computer screen.

The inspector affixes the certificate of conformity and sends it to the conveyor belt for the next process.

Then comes the assembly, product testing, packaging and other processes.

A lot of automated equipment has been added to all processes, and every link feels very professional and rigorous.

"I insist on getting this production line, Mr. Cheng. I wonder what the price is?" a senior official from the Ministry of Science and Technology asked with a smile.

Li Guocheng, who had stabilized his mood, replied: "This production line is the latest 24-inch integrated circuit color TV", and then took the two circuit boards handed over by the staff.

“Please see, this circuit board is for a certain manufacturer’s latest TV set. It is all made of discrete transistors, which are high-cost and easily damaged.

The area of ​​this circuit board produced by us is more than half less than that, and the main circuits are integrated circuits, which have a long life and are easy to maintain."

A senior official from the Ministry of Science and Technology took Longhua's circuit board and looked at it from side to side. "This looks really good. Let's see how it works in practice."

Everyone came to the corner of the exhibition hall, where there were two TVs.

The staff turned on the TV, and the clear picture made everyone accompanying them exclaim.Because even the best TVs nowadays have noise, and the images are not as clear as this.

Everyone started to adjust the channels and compare them, and they all recognized the quality of Longhua TVs.

"Mr. Cheng, how much does a complete production line cost?"

"As long as it is purchased from China, it is 50% lower than similar production lines in Xiaoli," Li Guocheng gritted his teeth and earned a profit of twice the cost with tears in his eyes.

"Longhua is good." A senior official from the Ministry of Science and Technology once again extended his hand and shook it with Li Guocheng.

Things went very smoothly, and a letter of intent was signed at that time to purchase 5 TV production lines and 2 color tube production lines.

At the end, Li Guocheng licked his face and said to a senior official from the Ministry of Science and Technology: "We are now developing production lines for refrigerators, refrigerators, air conditioners, telephones and fax machines."

"Mr. Chen, the business is doing well, and the product has not yet been advertised. Okay, as long as the product is good and the price is reasonable, you Longhua will be our partner.

At the same time, we also invite Longhua to invest in building factories in China, and we will definitely give you the biggest preferential policies."

A senior official in the Ministry of Science and Technology knew Li Guocheng well. He knew that he was a capable man and very patriotic, so he wanted to let him return to China as soon as possible.

"With your words, we at Longhua will definitely go all out to help China's scientific and technological progress and economic development."

"Lend your auspicious words".

This meeting went very smoothly. It not only opened up the Chinese market in one fell swoop, but also got an invitation from a senior official of the Ministry of Science and Technology. The road ahead will be much easier.

The next work is to re-select and design the circuits and sensors of current refrigerators and air conditioners.With a year's accumulation and Li Guocheng's guidance midway, their team also achieved a breakthrough six months later.

Li Guocheng personally reviewed and checked each design, and modified some areas where the safety design was not in place. Two months later, the refrigerator and air conditioner were also designed and tested to meet expectations.

The next step was to design the production line. They were basically mature, and Li Guocheng stopped paying attention.

Li Guocheng turned his energy back to the secret realm.

Based on the process information derived by Erxiao, he began to design the robot's walking structure.

In the first plan, we first designed a humanoid structure. When simulating it in our mind, we found that the advantages of humanoid robots lie in their flexibility, collaboration, and visibility, but factors such as cost, reliability, and technology are too complex.

Because the center of gravity is too high, the control program is also relatively complex and requires high computing power of the CPU.

The second option is a wheeled robot. Its advantages are: fast speed, high efficiency, and low movement noise. Disadvantages: poor obstacle surmounting ability, poor terrain adaptability, low turning efficiency, or large turning radius.

It is suitable for both outdoor and urban environments, but the terrain should not be too complex, such as climbing stairs.

The third option is to choose a hexapod robot, which mainly simulates the movement of insects.The advantages are excellent maneuverability, stability, adaptability and strong load capacity.

The disadvantages are low energy utilization and technical complexity.

Since its technology is also complex, why did Li Guocheng choose a six-legged robot?

The reason is very simple. A microprocessor is embedded in each leg to independently control the movement of the entire leg, and then the central controller coordinates the movement of the six legs.

It is said to have 6 legs, but the design difficulty has become one leg, and the remaining 5 legs can be copied directly.

The coordination algorithm of 6 legs is very simple for Li Guocheng.

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　Historically, many recruits could not stand the pressure and suddenly went crazy and rushed out of the trenches. Because they leaned forward, under the impact of machine gun bullets, their bodies were unable to go down until they turned into bones.

　　The same goes for this minefield. The soldiers used their bodies to get out of it, ensuring that the general attack was launched on time.

　　
　
(End of this chapter)