Recently, the “continuous Brillouin-based distributed fiber-optic sensing technology†invented by Professor Zhang Xuping of the School of Engineering Management of Nanjing University passed the expert appraisal organized by the Ministry of Education. The appraisal expert group unanimously held that this technology is highly innovative and has a number of independent intellectual property rights, and it has reached a leading domestic and international advanced level in technology and has a good application prospect.
Zhang Xuping stated that the continuous distributed optical fiber sensing technology has a wide range of applications. For example, the building's overall construction, dams, bridges, tunnels, oil pipelines, submarine optical cables, etc., can be connected to the Internet through the laying of optical fibers, so that monitoring information can be transmitted to any The set terminal performs remote monitoring and control so that the safety and quality status of various types of buildings, especially large-scale projects, can be continuously monitored and provided with warning information.
In the past two years, this technology has been advancing rapidly and applied more and more widely. There are also applications in China, such as the Sutong Bridge, the EMU protection fence, and the Nanjing Xuanwu Lake Tunnel, all of which are embedded in optical fibers. However, the core technologies used are all foreign.
Zhang Xu Ping said that the essence of this technology is to use the concept of the Internet of Things. At present, China's optical fiber sensing technology is mainly "spot." The so-called "spot type" is to implant one point sensor into the interior of the project and monitor the reaction through the point. For large-scale projects, the point-based fiber-optic sensing technology has a distributed distribution of its induction, in addition to its high cost. If the problem site is not covered with a sensor, it is insensitive or even insensitive and can easily cause omissions. And her invention of distributed optical fiber sensing technology to make up for this shortcoming. The technical invention has six major advantages: easy embedding with a small fiber body; corrosion resistance; anti-electromagnetic interference; transmission frequency bandwidth, sensing and transmission integrated network; monitoring reaction is continuous, fast, high sensitivity; low maintenance costs, Economical.
According to reports, distributed optical fiber sensing technology has emerged in foreign countries in the past few years, but due to the high cost, technical difficulties, and foreign patents and other thorny issues, so that the domestic technology is deterred. Zhang Xu Ping said that the technology she invented not only fills the domestic gap, but also costs only a fifth of the cost of similar equipment.
According to Zhang Xuping, China's self-developed technology was first applied to the fault location of submarine cable in 2004, which greatly shortened the diagnostic time of submarine cable faults, improved the accuracy of submarine cable fault location, and reduced the damage caused. Maximum. Due to the complexity of the submarine working environment and the large size of submarine cable equipment, continuous distributed optical fiber sensing technology has fully demonstrated its irreplaceable role.
Zhang Xuping stated that the continuous distributed optical fiber sensing technology has a wide range of applications. For example, the building's overall construction, dams, bridges, tunnels, oil pipelines, submarine optical cables, etc., can be connected to the Internet through the laying of optical fibers, so that monitoring information can be transmitted to any The set terminal performs remote monitoring and control so that the safety and quality status of various types of buildings, especially large-scale projects, can be continuously monitored and provided with warning information.
In the past two years, this technology has been advancing rapidly and applied more and more widely. There are also applications in China, such as the Sutong Bridge, the EMU protection fence, and the Nanjing Xuanwu Lake Tunnel, all of which are embedded in optical fibers. However, the core technologies used are all foreign.
Zhang Xu Ping said that the essence of this technology is to use the concept of the Internet of Things. At present, China's optical fiber sensing technology is mainly "spot." The so-called "spot type" is to implant one point sensor into the interior of the project and monitor the reaction through the point. For large-scale projects, the point-based fiber-optic sensing technology has a distributed distribution of its induction, in addition to its high cost. If the problem site is not covered with a sensor, it is insensitive or even insensitive and can easily cause omissions. And her invention of distributed optical fiber sensing technology to make up for this shortcoming. The technical invention has six major advantages: easy embedding with a small fiber body; corrosion resistance; anti-electromagnetic interference; transmission frequency bandwidth, sensing and transmission integrated network; monitoring reaction is continuous, fast, high sensitivity; low maintenance costs, Economical.
According to reports, distributed optical fiber sensing technology has emerged in foreign countries in the past few years, but due to the high cost, technical difficulties, and foreign patents and other thorny issues, so that the domestic technology is deterred. Zhang Xu Ping said that the technology she invented not only fills the domestic gap, but also costs only a fifth of the cost of similar equipment.
According to Zhang Xuping, China's self-developed technology was first applied to the fault location of submarine cable in 2004, which greatly shortened the diagnostic time of submarine cable faults, improved the accuracy of submarine cable fault location, and reduced the damage caused. Maximum. Due to the complexity of the submarine working environment and the large size of submarine cable equipment, continuous distributed optical fiber sensing technology has fully demonstrated its irreplaceable role.
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