Hunan construction machinery hydraulic sensors are expected to achieve local matching

Qitai hydraulic sensor is put into production this month, the annual production capacity of the first phase can reach 2 million pieces

Hunan Daily·New Hunan Client Reporter Li Zhi Photography Fan Yuanzhi

　(Wang Guoqiu talks about the development process of hydraulic sensor chip.)

The scale of Changsha's construction machinery industry is the largest in the country, but key components such as hydraulic sensors have long been dependent on imports. This dilemma is being solved under the long-term unremitting scientific research of local enterprises. The hydraulic sensor assembly line independently developed by Hunan Qitai Sensing Technology Co., Ltd. is expected to be mass-produced in June this year, which will completely solve the supporting needs of hydraulic sensors in the construction machinery industry in Changsha and even the whole country.

The outdoor rain is cool and cool, the motor on the first floor of the production area rumbling softly, the technicians on the second floor wear dust-proof clothing to maintain the chip production line, and the sensor production workshop on the third floor is doing equipment debugging before mass production... The reporter walked into Hunan Qi a few days ago. Tai Sensing Technology Co., Ltd. feels the huge potential of intelligent manufacturing. Chairman Wang Guoqiu said that the annual demand for hydraulic sensors in Hunan construction machinery is 600,000, and the annual production capacity of the assembly line equipment being debugged by the company is 2 million after it reaches production, which can fully realize local matching.

(The pressure sensor developed and produced by Qitai.)

The price of a piece of construction machinery and equipment ranges from hundreds of thousands to millions of dollars. But no matter how large the body is, the precise conduction of the small hydraulic sensor is inseparable. The sensor chip is only the size of a button, but the base is densely covered with network cables. The structure is like a city, and its core technology has long been mastered by developed countries in Europe and America.

In 2019, the total output value of the Changsha construction machinery industry chain exceeded 200 billion yuan, accounting for 23% of the output value of China's construction machinery industry. The "City of Construction Machinery" is the increasingly resounding business card of Changsha, and the construction of Changsha, Zhuzhou and Xiangtan to create a national advanced equipment manufacturing innovation center is the joint proposal of the Hunan delegation of the National "Two Sessions" this year. But at present, the key components of the construction machinery and equipment manufacturing industry in our province cannot be fully localized, and hydraulic sensors are one of them. Qitai Sensing Company is a high-tech enterprise specializing in R&D, production and sales of metal-based thin film pressure-sensitive chips and precision sensors. The company has overcome the key process and technology of heterogeneous membranes, and applied them to the production of metal-based thin film pressure-sensitive chips, filling the gaps in the large-scale production lines of my country's factories, and laying a foundation for the localization of pressure sensors in the application of high-end equipment in my country Solid foundation.

(Qitai sensor packaging production line)

Qitai Sensing's chip production line has achieved mass production. According to market demand, the current stage production capacity can reach 3,000 pieces per day, and the chip yield rate exceeds 90%. It is in a leading position in the international industry. The hydraulic sensor production line with chips as the main carrier is currently undergoing the final optimization of equipment installation and commissioning. It is expected that a large-scale production capacity will be formed in June, and an annual output of 2 million hydraulic sensors can be achieved after reaching full capacity. The current annual demand for hydraulic sensors for construction machinery across the country is about 2 million. Wang Guoqiu told reporters that as long as there is an order, the company has the foundation to expand its production capacity at any time, which can solve the national demand for construction machinery sensors.

Wang Guoqiu’s confidence is not groundless. He has another identity—a professor and a doctoral supervisor in the School of Mathematics and Statistics of Hunan Normal University. Wang Guoqiu, who has experience in studying and working at the National University of Defense Technology, is an early developer of "China Chip". He has won the first and second prizes of military-level scientific and technological progress, and has presided over 4 national-level integrated circuit projects. Give it a credit.

　　(启泰自主研发生产的压敏芯片)

"In the field of micro-electromechanical systems (MEMS) for pan-integrated circuits, our country's foundation is very weak. In the 1960s, Europe, America and Japan began to take off, but we were delayed at that time." Wang Guoqiu said. The delay is twenty or thirty years behind.

In 2006, Wang Guoqiu's research focus shifted to widely used pressure-sensitive chips and decided to take the road of industrialization. However, the development of pressure-sensitive chips is far more difficult than Wang Guoqiu expected. Wang Guoqiu's experiments are countless. One basket and one basket of the "button-type" base material were burnt out.

Perhaps it was Wang Guoqiu’s unwillingness to let his country’s industrial development be subject to patriotic sentiments that moved God. Qitai Sensing finally broke the core technology monopoly of European, American and Japanese companies last year and successfully rolled off the first batch of domestic metal-based pressure-sensitive chips in Changsha, which can be widely used. Smart cities, rail vehicles, construction machinery and other fields.

"We need to drink milk and raise cattle, because we can't let anyone get stuck on our necks!" Wang Guoqiu said. In the integrated circuit industry, the six parts of equipment, materials, design, production, testing, and packaging constitute the upstream and downstream industrial chain. Generally, a company only targets one of them. And Wang Guoqiu's pressure-sensitive chip line, because the base material is not ordinary silicon-based, but special metal, it is impossible to directly buy and use existing equipment, and no one can provide a complete supporting system. He led Qitai's scientific and technological personnel to overcome numerous difficulties and rely on independent research and development to achieve self-sufficiency in materials, processes and equipment.

Facing a wide range of application fields and broad market prospects, Qitai is planning to expand its production capacity and accelerate its development with the goal of listing. "China's GDP is likely to surpass that of the United States in 2025. I hope that by that time the level of industrial intelligence will also lead the world, and our'China core' will become a business card for industrial development." Wang Guoqiu said. It is understood that Qitai's second chip line is being selected, and the company's B round of financing has begun.

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