China News Service, Beijing, February 22 (Song Jia Zhang Su) Reduce the difficulty of circuit design, greatly reduce the volume and weight, and achieve low-cost and localization of laser gyroscope circuits... The reporter learned from the interview that a research and development team has successfully developed a new generation of Laser gyro driver module.
It is known that the navigation system with laser gyroscope as the core component is an inertial navigation system.
Compared with the well-known satellite navigation system, the inertial navigation system can not only provide position information, but also analyze the carrier attitude information, and can resist electronic interference. It can operate in deep sea, deep space and other scenarios, especially when the satellite navigation system fails. It can still work under various conditions, so it is often used as "guaranteed equipment" in aviation, aerospace, navigation and other fields.
In the 1990s, Gao Bolong, an academician of the Chinese Academy of Engineering, led a domestic scientific research team to develop a laser gyroscope, breaking the technological blockade implemented by some countries.
However, due to a relatively late start, high technical threshold, and poor ease of use, the market application of laser gyroscopes has not been launched on a large scale in China.
"The laser gyroscope is mainly composed of two parts: the control circuit and the sensor body. Among them, the control circuit is known as the 'brain' of the laser gyroscope. It is the most complex part in terms of performance and reliability, and is also the main factor in reducing costs and improving ease of use. One of the breakthrough points." said Lu Guangfeng, founder of Hunan 208 Advanced Technology Co., Ltd.
He further explained that the previous generation of laser gyro drive control circuits used discrete devices, which were not only larger in size, but also required manufacturers to purchase hundreds of types of parts for assembly, resulting in "a lack of unified standards, low integration, and high costs." "And other issues.
Some members of the 208 company's technical team have been working in the field of laser gyroscopes for more than 20 years.
In recent years, they have cooperated with domestic advanced materials research teams to realize the technology research and development, engineering and mass production process research of new generation laser gyroscopes, hemispheric resonant gyroscopes and high-precision accelerometers.
The picture shows the new generation laser gyro drive module independently developed by the technical team of 208 Company.
Photo courtesy of Lu Guangfeng.
Lu Guangfeng introduced that the new generation laser gyro drive module launched by the R&D team this time is composed of 5 independent functional modules, which respectively realize the high-voltage starting, high-voltage maintenance, precision flow stabilization, jitter drive, frequency stabilization and lock-zone optimization of the laser gyro. Function.
Compared with the previous generation of laser gyro drive control circuit, the dedicated series of modules greatly reduces the difficulty of circuit design, reducing the volume by one-third and reducing the cost by half.
"This opens up space for further expansion of applications." He said that laser gyroscopes have become an important sensor for high-precision measurement and positioning, and are expected to show their talents in fields such as autonomous driving, industrial automation, robots, and rail transit.
Lu Guangfeng also said that low cost, high precision and small size are the future development trends of inertial navigation systems. While they are vigorously developing low-cost laser gyro drive modules, they have also increased investment in the development of the next generation of low-cost, high-precision gyroscopes in order to promote The marketization process of inertial devices such as laser gyroscopes in various types of unmanned systems and other fields.
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