On May 1, 1978, Li Guocheng, accompanied by Lao Luo, came to Shenzhen again, preparing to buy land in Luohu District to build a scientific research building, but to no avail of communication with the local government.

In August of the same year, Longhua Household Appliances Co., Ltd. replaced the patents of televisions, refrigerators, air conditioners, telephones and fax machines with electronic watches and liquid crystal patents respectively from Xiaori and Sam Country.

One of the design teams of Longhua Home Appliances began to familiarize themselves with the principles of refrigerators and air conditioners.

Li Guocheng personally led another team to purchase a new TV set for Xiao Ri to analyze the principle and optimize 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, accurate channel extraction, and ensure image stability.

Except for the pre-stage RF signal reception and processing circuit, which still uses discrete components, all other circuit function modules are all changed to special chips.

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

The redesign of a TV, Li Guocheng mobilized 3 design teams of home appliances, smart core and structure, which lasted more than 1 year.

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

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

The Group's legal department also filed a patent application.

At present, it is still in the stage of tube TV and transistor TV,Longhua Electric has launched integrated circuit TV,Directly into the 3.0 era,Far ahead of all current TV manufacturers。

In September 1979, Longhua Science and Technology ushered in a delegation from China, with the deputy mayor of Pengcheng City and an executive of the Ministry of Science and Technology, and the lineup was not small.

This timing coincides with the introduction of a large number of TV production lines in Huaxia, if it can be successful, it can not only leave a large amount of introduction fees for Huaxia, but also be able to introduce advanced products.

Therefore, the appearance of this delegation made Li Guocheng very excited.

Li Guocheng's gaffe also made the accompanying officials of the Ministry of Science and Technology lower their expectations, thinking that it was the relationship of 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 exhibition workshop, everyone had a feeling of entering the future world.

In order to highlight the industrial aesthetics, the overall design of each module is carried out with reasonable layout of the production line module, which is high and low and orderly, and staggered.

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

The soldered board is set up by a beautiful little girl and put into a special fixed box, and after it is full, it is hung on the assembly line for cleaning and drying.

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

After the inspection of the board, put it in the special anti-static storage box, and put it on the conveyor belt after it is full.

The next process is to put it on a special test bench, test the signal of 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 there are processes such as assembly, authenticity testing, packaging, etc.

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

"This production line is hard to get, Mr. Cheng, I don't know what the price is?" , a senior official of 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," he said, taking the two circuit boards handed over by the staff.

"Look, this circuit board is the circuit board of the latest TV set of a certain factory, all of which are discrete transistors, which are expensive and easy to damage.

And this circuit board we produce is more than half the area of it, and the main circuits are integrated circuits, which have a high life and easy maintenance."

A senior official of the Ministry of Science and Technology took Longhua's circuit board and looked left and right, "This looks really good, see what the actual effect is?" ”

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

The staff turned on the TV, and the clear picture made the entourage exclaim. Because the best TVs nowadays also have noise, and the image is not as clear as this.

Everyone started to adjust the station and compared, and they all recognized the quality of Longhua TV in their hearts.

"May I ask Mr. Cheng, what is the price of the full production line?"

"As long as it is purchased in Huaxia, it is 50% lower than a similar production line in Xiaori", Li Guocheng gritted his teeth and tearfully earned twice the profit of the cost.

"Longhua is good", a senior official of the Ministry of Science and Technology stretched out his hand and shook Li Guocheng again.

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 of 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 started to be advertised. Okay, as long as the things are good and the price is reasonable, you Longhua is our partner.

At the same time, we also invite Longhua to invest in building a factory in Huaxia, and we will give you the greatest preferential policies."

A certain high-ranking official of the Ministry of Science and Technology knew Li Guocheng as a person, and he knew that he was a capable person and very patriotic, so he wanted to let him return to China as soon as possible.

"With your words, we Longhua will go all out to help China's scientific and technological progress and economic take-off."

"Lend you good words".

The talks went very smoothly, not only opened up the Chinese market in one fell swoop, but also received an invitation from a certain senior official of the Ministry of Science and Technology.

The next step was to re-select and design the circuits and sensors of the current refrigerators and air conditioners. With a year's accumulation and Li Guocheng's guidance halfway, their team also made a breakthrough half a year later.

Li Guocheng personally reviewed and checked each design, modified some safety design inadequacies, and two months later, the refrigerator and air conditioner were also designed, and the test met expectations.

The next thing is to design the production line, they are basically mature, and Li Guocheng no longer pays attention.

Li Guocheng turned his energy back to the secret realm.

Based on the process information derived from Erxiao, he began to design the walking structure of the robot.

In the first case, a humanoid structure was first designed, and when I simulated it in my mind, I found that the advantages of humanoid robots were their flexibility, collaboration, and visibility, but the factors such as cost, reliability, and technology were too complex.

Because the center of gravity is too high, the control program is also more complicated, and the computing power of the CPU is required.

The second scheme is a wheeled robot, which has the advantages: fast speed, high efficiency and low motion noise; Disadvantages: obstacle crossing ability, poor terrain adaptability, low turning efficiency, or large turning radius.

It is suitable for both wild and urban environments, but the terrain should not be too complicated, such as climbing stairs to achieve it.

In the third scheme, a hexapod robot was chosen, which mainly simulated the movement of insects. The advantages are excellent maneuverability, stability, adaptability and load capacity.

The disadvantage is low energy efficiency and technical complexity.

Since its technology is also complicated, why did Li Guocheng still choose a hexapod 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 movement of the six legs is coordinated by a central controller.

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

The 6-legged coordination algorithm is very simple for Li Guocheng.

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

This minefield was also the same, and the soldiers used their bodies to wade out to ensure that the general attack was launched on time.

(End of chapter)