Laser Modulation Absorption Moisture Gas Sensors Successfully Developed Up to International Advanced

[China Instrument Network Instrument R&D] A few days ago, the “High Precision Laser Modulation Absorption Water Gas Sensor Application Technology” evaluation of scientific and technological achievements was held in the China Science and Technology Hall. Famous Chinese laser and non-linear optics expert, academician of the Chinese Academy of Sciences Yao Jianyu, chairman of China Huayun Meteorological Science and Technology Corporation Wang Xiaoyun, vice president of China Aerospace Aerodynamics Technology Research Institute Huang Yuqun, vice president of the Chinese Academy of Cultural Heritage Ma Qinglin and other 21 experts The judges attended the evaluation meeting. After discussion, the jury found that the technical achievement has a number of core independent intellectual property rights, and it is of great significance in the application of humidity measurement, etc. The use of the technology has broad prospects and reaches internationally advanced levels.

It is reported that this evaluation will be organized by China High-tech Industrialization Research Association and aims to scientifically, creatively, and advancedly the research and development achievements of Beijing Aerospace Yilian Technology Development Co., Ltd., the Institute of Semiconductors of the Chinese Academy of Sciences, and the Institute of Electrical Engineering of the Chinese Academy of Sciences. , Feasibility, economics, and application prospects are evaluated comprehensively.

The project team introduced the project situation from several aspects such as research background, core technology, domestic and foreign results comparison, and application of results at the current stage. It is reported that the traditional measurement methods in the existing market have the problems of low resolution, high humidity hysteresis, and large errors at low temperatures. After many years of research, Aerospace Alliance has passed a lot of experiments and tests to propose TDLAS water vapor. Sensor application technology enables water vapor measurement accuracy, response speed, and better environmental adaptability. It can be used for humidity monitoring in many fields such as meteorological and environmental protection, cultural relic protection, petrochemicals, and electricity.

The experts conducted a careful review of the materials submitted by Aerospace Alliance. In the evaluation of the project, the evaluation committee questioned the relevant contents of the project and the project team answered questions from the experts in detail. In the end, after the discussion of the jury, the jury found that the system was used for the first time in domestic airborne air humidity measurement, high-humidity environment monitoring of cultural relics, and humidity monitoring of data center IDC, and its application in the field of Chinese materials has filled the gaps at home and abroad. This technical achievement has a number of core independent intellectual property rights, which is of great significance in the application of humidity measurement and other aspects. It has a broad application prospect and reaches the international advanced level.

Academician Yao Jianrong said in an interview that the technology is not China's first, but the research and application in the field of application belong to the international advanced level. In addition, the technology needs to do a lot of work to achieve marketization and industrialization in the application field. At the same time, the committee of experts recommended that the application of the technology be further expanded, and the promotion efforts should be increased to meet market demand.

(Original title: "High-precision Laser Modulated Water Vapor Sensors Received "International Advanced")

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