You can "mov" the topographic map home by wearing 3D glasses, and you can determine the line plan without leaving your home... On October 25, China Railway Fourth Survey and Design Institute Group Co., Ltd. (hereinafter referred to as " Railway Fourth Institute ") revealed that the "Research on Application Technology in the Field of Railway and Shipping Based on Beidou Navigation System" project led by the institute took more than three years to complete, and all software and hardware were independently developed, basically realizing that Beidou completely replaces GPS, forming a new precision control measurement system and intelligent surveying technology for the railway system.
Beidou "weaves the net", the railway measurement accuracy reaches centimeter level
One person, one pole, one backpack, this is a vivid portrayal of the railway surveyors from the 1950s to the 1990s.
For a long time, my country's railway engineering surveying, surveying, design, construction, operation, monitoring and other fields and navigation technologies are mainly based on the United States' GPS navigation and positioning technology.
High-speed railways have fast speed, large spans and complex geological environment. It is necessary to establish a large-scale high-precision control network to accurately measure railway tracks to ensure the smoothness and safety of high-speed railway operation. On November 9, 2018, the "Research on Application Technology in the Field of Railway and Shipping Based on Beidou Navigation System" project organized by China Railway Construction , led by Institute of Railway No. 4, and participated in the research of the First Institute of Railway No. 5, Shanghai Institute of Port and Shipping, and participated in the research of the Beidou Navigation System, covering the fields of railway and shipping. At present, the entire project has been completed.
After more than three years of research, the Fourth Institute of Railways and relevant units jointly developed the Beidou ground-based augmentation system and the solution software, compiled the railway engineering measurement system specifications based on the Beidou ground-based augmentation system, as well as Beidou receivers, Beidou rapid measurement trolleys and other equipment that support multiple constellations.
Min Yang, deputy chief engineer of the Investigation Institute of the Fourth Institute of Railways, introduced that in railway surveys, several Beidou reference stations (i.e. Beidou ground-based enhancement system) will be established. These point-like distributions will build a Beidou high-precision frame network to provide high-precision and unified basic services for control measurement, navigation and positioning, and deformation monitoring, thereby realizing centimeter-level high-precision survey of railway and urban rail transit points.
"Where to dig holes, bridges, and railway connection points are clear at a glance, construction workers only need to 'follow the map'." Min Yang said that in the design of Wuhan rail transit, a high-precision frame network consisting of 54 Beidou reference stations was built. Several lines use frame networks for control network construction, ensuring the precise connection between various subway lines.
, without leaving home, "traveling" all over the mountains and rivers
, the intelligent era, "attach the Beidou" in the sky and the earth.
Nowadays, based on Beidou navigation , LiDAR , tilt photography , drones and other technologies, and comprehensively using deep learning, artificial intelligence , cloud computing and other processing methods, the Iron and Fourth Academy has established a complete set of intelligent surveying technology system.
On October 25, at the Hangyao Institute, Building 2, Iron and Fourth Institute, engineer Jiang Yiqun stared at the computer, wore 3D glasses, and clicked the mouse. He was conducting a survey of a certain area of Xinchang Railway (the passenger and freight railway connecting Xinyi City, Xuzhou City, Jiangsu Province and Changxing County, Huzhou City, Zhejiang Province).
"This is an image taken by an outsider using a drone. Wearing 3D glasses is like walking in the real mountains and rivers. You can accurately 'trample' all over the mountains and rivers without leaving your home." Jiang Yiqun said that the computer can directly collect information on the land and landforms such as mountains, buildings, roads, etc. along the route, truly realizing a big data overview and formulating route plans without leaving your home.
Li Meng, director of the Survey and Mapping Institute of the Fourth Institute of the Railway 4th Institute, introduced that traditional surveys are mainly manual contact measurements of equipment such as tape ruler, total station , level and GPS. A 500-kilometer-long railway must be divided into five sections, with an average of at least 50 surveyors required for each section, and the survey will be completed in about 3 months. Now through intelligent surveying technology, the construction period is reduced by at least 30% and the personnel is reduced by 40%.
It is reported that the intelligent survey technology of the Fourth Institute of Railways has been piloted for more than 2,000 kilometers of railways such as Ruimei, Xiangjing, Hefu, and Changgan. In the future, all railway surveys undertaken by the Fourth Institute of Railways will use intelligent survey technology.With the development of smart transportation in my country, intelligent surveying technology will provide basic data for the entire life cycle of rail transit construction, operation and maintenance, and promote the development of digital and intelligent in the entire industrial chain.
(Hubei Daily All-Media Reporter Zuo Chen, Correspondent Zhang Qishan, Guo Yongrui)
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