"Signal Receiving, Amplifying, Transmitting......"
In the complex environment of space, the radiation-resistant components independently developed by the China Electronics Chip Technology Research Institute (hereinafter referred to as "Electronics Chip"), an enterprise in the Western (Chongqing) Science City, are playing the role of "base station", amplifying weak analog signals and other processing, avoiding the problems of parameter degradation and functional failure of ordinary operational amplifiers in the heavy ion environment such as γ rays in space, and ensuring the long-term stable operation of Shenzhou 18.
▲On the evening of April 25, the Long March-2F Yao-18 carrier rocket carrying the Shenzhou-18 manned spacecraft was launched. Source: CCTV News
At the end of April this year, the Shenzhou-18 spacecraft was successfully launched, and a week later, the Shenzhou-17 astronaut crew returned to the Dongfeng landing site as planned. Whether it is the "business trip" of Shenzhou 18, or the "homecoming" of Shenzhou 17, there are electric chips, and the company's independent research and development of anti-radiation dual-channel operational amplifiers, three-terminal voltage regulators and other eight innovative achievements, breaking through a number of key core technologies, escorting the manned spacecraft "to the sky".
▲China Electronics Chip Technology Research Institute. Photo courtesy of the interviewee
At present, scientific and technological innovation is the "main direction" of Chongqing's development of new quality productive forces. In the past few days, in the Western (Chongqing) Science City, a large number of "Science City" products have overcome key core technologies, strengthened the deep integration of scientific and technological innovation and industrial innovation, and injected kinetic energy into the core bearing area of the construction of a scientific and technological innovation center with national influence.
Decades of grinding
A number of leading technologies supporting the Shenzhou system
Use photoelectric alignment devices to connect signals...... In the electrical chip laboratory, radiation-resistant devices that are only half the size of a fingernail are being rolled off the assembly line one after another for the next round of testing.
Don't look at these half-fingernail-sized devices, in the aircraft, they constitute a "base station signal source", which can complete long-term anti-radiation tasks in the complex environment of space and provide stable signal transmission.
In the history of the development of aviation in the world, there is a saying that "one generation of aircraft, one generation of materials". For a long time, CETC has shouldered the important task of overcoming difficulties for the aerospace industry and supporting high-level scientific and technological self-reliance and self-reliance.
In 2003, the mainland launched its first manned spacecraft, Shenzhou 5, how to overcome the complex situation in space and ensure the reliability and service life of spacecraft to a greater extent in the space radiation environment? Radiation resistance has become an important indicator.
"It's hard, but it has to be gnawed!" The relevant person in charge of the electrical chip immediately convened an emergency meeting of technical personnel to overcome technical difficulties.
"At that time, advanced technology could not be mastered, and in the absence of relevant technology and data reference in China, we could only overcome this 'stupid method' by 'gnawing' the data and repeatedly experimenting." The person in charge of electrical chip technology introduced.
Stability is a common problem encountered by radiation-hardened devices, and in the complex environment of space, each component must be guaranteed to be foolproof and there is no chance to replace it.
▲The electrical chip engineer is discussing the details. Photo courtesy of the interviewee
However, due to the conditions at the time, components are often affected by the radio wave magnetic field under special circumstances, which will produce signal interruption or downtime, and each failure means that thousands of previous tests are in vain.
From the failures again and again, we repeatedly reversed, demonstrated, improved, adjusted the signal receiving range, and improved the engineering algorithm...... Finally, the first anti-radiation component was born, and the aerospace supporting mission was successfully completed.
For more than ten years, CETC chips have continuously broken through a series of "stuck neck" key core technologies to escort the mainland's aerospace industry.
Since Shenzhou 5, CETC chips have provided nearly 100 types of products for the Shenzhou series, including analog integrated circuits, secondary power supplies, microwave components and optical modulation modules, SAW filters, crystal filters, ceramic filters, acoustic surface filters, etc., which are used in all stages of manned space missions.
Photograph the Yangtze River Bridge on satellite
"Made in Science City" forges hard-core heavenly strength
Nowadays, a series of science city enterprises such as electrical chips play an important role in the development of the aerospace information industry.
▲The four-dimensional wide-format focal plane electronics component independently developed by the electrical chip was successfully started up and sent back to the first picture. Photo courtesy of the interviewee
Previously, the Long March-2D carrier rocket ignited and lifted off at the Jiuquan Launch Center, successfully sending the four-dimensional Gaojing-3-01 satellite into the predetermined orbit, and the launch mission was a complete success. On the same day, the four-dimensional wide-format focal plane electronics component independently developed by CETC was successfully started up and sent back to the first picture, which has clear images, rich layers and accurate colors.
▲The multispectral CCD independently developed by the electric chip shoots the confluence of the two rivers in Chongqing. Photo courtesy of the interviewee
"In other words, our images are also called taking pictures of the earth, and you can even clearly see a series of landmark buildings such as the Yangtze River Bridge and the Grand Theater on the map." According to the relevant person in charge of the electrical chip, "after the satellite is in orbit, the component can comprehensively use high-resolution wide-format imaging methods to obtain high-resolution image data, which can serve a variety of quantitative application scenarios such as cloud and fog, forest land classification, vegetation detection, etc., and the image data will effectively support the application of the mainland in the fields of land and resources survey, urban management, environmental protection, disaster prevention and mitigation." ”
▲Electrical chip engineers are developing related devices. Photo courtesy of the interviewee
At present, Chongqing is insisting on promoting the development of the aerospace information industry under the guidance of innovation, and the Science City, as the main battlefield of the aerospace information industry, is injecting strong momentum into the development of new quality productivity and promoting high-quality economic growth.
Chongqing Saibao Industrial Technology Research Institute Co., Ltd. has overcome key core technologies and continuously carried out forced hydrolysis obstacle removal tests of different standards to build a solid quality and safety barrier for C919 large passenger aircraft.
Relying on the opportunity of carrying commercial spaceflight, Xingchen Space has provided a total of 8 sets of chemical propulsion and electric propulsion system products for Tianyi satellite, Galaxy Lingxi 03 satellite and other satellites, which have reached the domestic leading and international first-class excellent performance level after in-orbit flight verification.
The fast reflector independently developed by Peak Wisdom Technology has become the core component of the "short board" in the strong manufacturing chain of the core manufacturing industry chain of the national aerospace information industry chain and supply chain, and has been successfully applied in airborne, spaceborne, shipborne, missile and other environments.
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In the context of the rapid development of science and technology and the in-depth adjustment of the industrial structure, the new quality of productivity has become an important engine to promote high-quality economic development.
Today, the Western (Chongqing) Science City closely focuses on the two strategic positioning of "an important strategic fulcrum for the development of the western region in the new era and a comprehensive hub for inland opening", vigorously develops new quality productivity with scientific and technological innovation as the core, accelerates the construction of the "3238" modern manufacturing cluster system, accelerates the construction of the core bearing area of the science and technology innovation center with national influence, promotes more "hard core technology" to accelerate the output, and provides momentum for high-quality development.
Editor-in-chief: Deng Xiaowei丨Deputy editor-in-chief: Li Haoyang
Editor-in-Chief: Li Tongtong丨Editor-in-charge: Wang Qian
Reporter: Guo Yuyan | Editor: Fan Xingxin|Proofreader: Zhou Yi
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