Chinanews.com, Lanzhou, May 30 (Reporter Ding Si) China Aerospace Science and Technology Group Co., Ltd. Fifth Institute 510 (hereinafter referred to as "Aerospace 510") disclosed on the 30th that it was responsible for the mission of the Tianzhou-2 cargo spacecraft. Integrated display unit, voice unit, fast door leak detector, rendezvous and docking exterior lighting equipment, interior lighting equipment, front door balance valve, ventilation temperature sensor, etc. in the instrument lighting, structural mechanism and thermal control sub-system. Taiwan/set of stand-alone development missions, to “escort” the space station for the “courier brother” who is responsible for the “cargo delivery” task.

　　Among them, the integrated display unit, as the only display instrument in the Tianzhou-2 cabin, is responsible for the comprehensive status monitoring and display tasks of the spacecraft in orbit operation. It is the core and key single unit of the Tianzhou-2. It is in the Tianzhou-2 and the space station. During the whole process of rendezvous and docking of core cabins, it plays a vital role.

　　On the evening of May 29, China successfully launched the Tianzhou-2 cargo spacecraft at the Wenchang Space Launch Site.

Tianzhou-2 is China’s second cargo spacecraft. Its mission is to dock with the Tianhe core module, which was successfully launched on April 29, to ensure that the space station has sufficient material reserves to serve the follow-up astronauts’ long-term in-orbit missions.

The picture shows the voice unit developed by the Aerospace 510.

Photo courtesy of Aerospace 510 Institute

　　According to Wang Xuesong, assistant to the director of the Institute of Aerospace 510 and general manager of the mechanical and electrical products division, the integrated display unit is the most technically difficult among the single-machine products of Tianzhou-2 that the institute supports.

Its stand-alone data processing platform is improved and upgraded on the basis of the original manned spacecraft data processing platform, and the data processing speed is doubled; the video overlay technology is adopted, and the video processing capacity is greatly improved; the LCD screen is improved from the original 6.5-inch LCD module to 12.1 -Inch infrared touch display module, the display content is more abundant.

　　"During the development of the integrated display unit product, many technical difficulties have emerged, which are mainly reflected in the upgrading of complex single machines." Wang Xuesong said, in view of the large amount of equipment calculation data and complex operation tasks in the cargo spacecraft mission, the integrated display unit Using a new high-performance processor platform, this platform is also the first application in China's manned space mission.

　　In order to ensure the ability of the high-speed hardware system to work normally under the conditions of complex cosmic rays and high-energy particles, the research team of the institute has carried out hundreds of simulation and physical verification tests to solve the problem of radiation-resistant reinforcement of high-speed electronic circuits.

　　When the astronauts wear the space suit in the cabin, they cannot operate the common capacitive and resistive touch screens.

Wang Xuesong said that the research team of the institute designed a "graphics card" system adapted to the space environment and realized large-screen display and control technology, developed an infrared touch screen adapted to the space environment, and adopted special memory management technology to prevent crashes. , Blue screen and other phenomena, so that astronauts can effectively perform touch operations in space, reducing the burden of on-orbit operations.

　　In addition to the integrated display unit, other products undertaken by the Aerospace 510 also played an important role.

The voice unit is an important voice instrument in the cargo spacecraft, used to broadcast audio signals and alarm signals, and is an important source of information for astronauts to grasp the state of the spacecraft.

　　In addition, the astronauts have to open and close the hatch in order to get out of the orbit and pass through the capsule. The fast door leak detector is an important guarantee equipment for the rendezvous and docking of the cargo spacecraft and the core cabin of the space station. A mechatronic product that performs rapid leak rate detection on the sealing surface of the door and the docking frame. It is like a "door god" attached to the door of a cargo spacecraft, providing astronauts with information on the sealing status of the door and ensuring the safety of the astronauts.

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