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The latest large-scale construction of 24-hour monitoring equipment available
In recent years, "Building crooked," "House crunchy," "Bridge Batter" and other issues exposed on the network gradually cause for concern. How to prevent accidents, find out problems early, eliminate potential safety problems and ensure the safety of life and property of the country and people are becoming more and more important. The latest technology invented by Prof. Xu-Ping Zhang from Engineering Management School of Nanjing University "Continuous Distributed Optical Fiber Sensing Technology Based on Brillouin Effect" recently passed the expert appraisal meeting organized by the Ministry of Education. This invention can be equipped with a 24-hour "personal doctor" for major projects. IOT "antennae" 24-hour continuous induction Professor Zhang Xu Ping's "continuous distributed optical fiber sensing technology" is currently the most popular "Internet of Things concept." You can connect any large-scale construction project to the Internet. Through the detection of temperature and stress, monitor the "health status" of the project 24 hours a day, and report a slight alarm to the police in time, and pinpoint the hidden parts accurately. She introduced that at present our country owns the optical fiber sensing technology is mainly "point type", and her technology is "continuous". The "spot" sensor monitors the reaction through a point, which has the problems of high cost, scattered sensing distribution, and insensitivity. Zhang Xu Ping's "distributed optical fiber sensing technology" to make up for these shortcomings, and has six major advantages: a small optical fiber body light. She said that "one is thinner than hair," easy to embed, and can be implanted into a project without any problems. It is suitable for complex structural projects. With its high sensitivity and continuous, rapid monitoring, it can promptly discover the "condition" ; Corrosion resistance; anti-electromagnetic interference, such as natural gas monitoring requirements can not be clearly charged with fire, while the fiber is an insulator; transmission bandwidth; fully distributed measurement, sensing and transmission integration, easy networking, forming a full range of networks, especially suitable Large-scale projects; low maintenance costs, affordable. Zhang Xu Ping said that a few years ago, distributed optical fiber sensing technology had appeared in foreign countries. However, due to the high cost, high technical difficulty and the thorny problems involving foreign patents, the domestic technology was discouraged. The invention of Zhang Xu Ping filled the gap in China. The cost of similar equipment is not only one-fifth of that of foreign equipment, but also more advanced than that of foreign equipment. In particular, it has made some breakthroughs in foreign-related technologies in terms of real-time performance and resolution. Real-time detection of "private doctors" will be warning Zhang Xu Ping said that construction works like a full year of physical examination, if found more serious problems, has come to an advanced stage, the treatment is more difficult. However, if there is a highly sensitive health monitoring device installed on the body, the indicators of an exception on the alarm, diagnosis and treatment, then a lot of chronic diseases and incurable diseases can be avoided. Now our country's basic inspection of construction projects is the annual inspection, semi-annual inspection, or the use of "point-style" approach to monitoring, time-consuming and laborious, and ineffective. The Importance of Infrastructure Security It is a well-known fact that the consequences of a problem can be disastrous. Such as the snowstorm caused massive destruction of power equipment and railway interruptions, the recent temporary closure of Charles de Gaulle airport, etc., have brought great inconvenience to our lives. Therefore, we must maintain the safety of the project within the control of people, and strive to shorten the repair time and cost. If you can set up a personal alarm inside the basic project, the entire project are set in the alarm range of awareness, there is a problem alarm, then the people feel more peace of mind. Zhang Xu Ping's "continuous distributed optical fiber sensing technology" can act as a large engineering personal alarm. The technology was first applied to the 2004 submarine cable fault location. Submarine fiber optic cable failure, will lead to the paralysis of the Internet, such as last year's earthquake in Taiwan led to the submarine cable fracture, making a number of domestic and international network interruption, resulting in huge economic losses, brought great work and life inconvenient. The technique can greatly shorten the diagnosis time of the submarine cable fault, improve the positioning accuracy of the submarine cable fault point, and reduce the loss caused by the submarine cable to the maximum extent. In the submarine cable construction and routine maintenance process, timely monitoring of stress conditions are also very necessary. Due to the complexity of the seafloor work environment and the submarine cable equipment is too large, "continuous distributed optical fiber sensing technology" has come into force. In the past two years, the technology has been promoted extremely rapidly abroad with more and more applications. In China has gradually begun to be applied. If we are familiar with the Sutong Bridge, Nanjing Xuanwu Lake tunnel, EMU fencing, etc., are embedded in optical fiber, as long as the sensing device developed by Zhang Xu Ping, we can keep abreast of these building works, "Health Information." By promoting and applying 24-hour health "private doctors" for each project, it will no longer be a distant dream.