Recently, a new generation of laser gyro drive series functional chips have been launched in China. Compared with the previous generation of laser gyro drive control circuits commonly used in the industry, laser gyro drive dedicated chips have reduced the difficulty of circuit design, greatly reduced the volume and weight, and realized the low-cost localization of laser gyro circuits in my country, taking a key step towards the high integration and localization of laser gyro products.
Domestic new generation laser gyro drive series functional chips
"Decay aristocracy" reappears - laser gyro market has a bright future
The navigation system with laser gyroscope as the core component is an inertial navigation system. Compared with the satellite navigation systems such as GPS and Beidou that everyone is familiar with, few people are familiar with inertial navigation systems. In fact, the emergence of inertial navigation systems is more than half a century earlier than satellite navigation systems. Satellite navigation systems can realize combined navigation with inertial systems to further improve the accuracy of navigation systems, but they cannot completely replace inertial navigation systems. Inertial navigation systems can not only provide location information, but also analyze carrier attitude information to achieve functions that satellite navigation systems cannot achieve. In addition, the inertial system does not require any external information source, can operate at any time in various scenarios such as deep sea and deep space, and can resist electronic interference, and can still work when satellite navigation systems such as GPS fail. Therefore, the inertial navigation system is the bottom-line equipment in modern aviation, navigation, aerospace and other fields, and inertial devices such as laser gyroscopes are irreplaceable important sensors. Its technical level is also one of the important indicators of a country's industrial technology development level.
In the 1960s, the United States took the lead in successfully developing laser gyroscopes, which in turn triggered a revolution in the field of navigation worldwide. Due to its important strategic significance, for a long time, laser gyroscope-related products and technologies have been technically blocked by European and American countries. It was not until 1994 that China developed the first laser gyroscope under the leadership of Gao Bolun, a professor at the former School of Optoelectronic Science and Engineering of the National University of Defense Technology, an academician of the Chinese Academy of Engineering, and the "father of laser gyroscopes", becoming the fourth country in the world that can independently develop laser gyroscopes.
At present, laser gyroscopes have developed into a gyroscope with mature technology and superior comprehensive performance. The latest practice shows that satellite navigation systems are extremely vulnerable to attacks and interference. This reality further highlights the high-precision advantages of inertial navigation systems such as laser gyroscopes. In new usage scenarios such as long-flight drones and unmanned submarines, high-performance devices such as laser gyroscopes will be difficult to replace.
In addition to the large-scale demand in the aviation, aerospace, submarine, and ship markets, laser gyroscopes will become important sensors for high-precision measurement and positioning in civilian fields such as autonomous driving, industrial automation, robots, and rail transit.
A new generation of dedicated "cores" breakthroughs to help low-cost localization of laser gyroscopes
Facing broad market prospects, domestic laser gyroscopes have not been able to be widely used in the market due to their late start, short time difference with fiber optic gyroscopes, and their own production capacity problems, as well as high technical barriers, high pricing, and poor ease of use.
"The laser gyroscope is mainly composed of two parts: the control circuit and the sensor body. Among them, the control circuit is the 'brain' of the laser gyroscope, the most complex part of the laser gyroscope's performance and reliability, and one of the main breakthroughs in reducing costs and improving ease of use."
"The previous generation of laser gyroscope drive control circuits used discrete devices, which were not only large in size, but also required manufacturers to purchase hundreds of parts for self-assembly, resulting in the lack of unified standards, low integration, and high costs."
The new generation of laser gyroscope drive series functional chips are smaller than a coin
Low cost, high precision, and small size are the future development trends of inertial navigation systems.
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