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System and method for fast precise measurement and total factor data acquisition of high speed railway

A high-speed railway, precision measurement technology, applied in the direction of railway vehicle shape measuring instrument, measuring point marking, railway car body parts, etc., can solve the problems of discrete observation value and high cost, and achieve the effect of high system integration

Inactive Publication Date: 2010-12-15
扬州德可达科技有限公司
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Problems solved by technology

"However, the observed values ​​obtained in this way are discrete, and its accuracy depends heavily on the sensitivity and quality of the displacement sensor. At the same time, the quality of monitoring also depends on the installation density of the measurement reference piles, which is not only costly, but also impossible completely avoid security risks

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  • System and method for fast precise measurement and total factor data acquisition of high speed railway

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[0019] figure 1 It is a system schematic diagram of the high-speed railway mobile precision measurement system of the present invention. The system consists of a laser scanner 1 , a digital imaging device 2 , a GPS receiver 3 , an IMU inertial measurement unit 4 , an industrial computer 5 and a power supply unit 6 . The power supply device 6 provides power guarantee for the laser scanner 1 , the digital imaging device 2 , the GPS receiver 3 , the IMU inertial measurement device 4 , and the industrial computer 5 . Laser scanner 1, digital imaging equipment 2, GPS receiver 3, IMU inertial measurement device 4 are controlled by industrial computer 5. The system is installed on a moving platform 7. During the movement, the laser scanner 1 emits a laser beam and receives the laser pulses reflected by natural objects, and the digital imaging device 2 takes images of the high-speed railway track, roadbed and surrounding features. The GPS receiver 3 and the IMU inertial measurement ...

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Abstract

The invention relates to the field of precise railway measurement, high speed railway rail detection and security and digital railway, in particular to a system and a method for carrying out movable precise measurement of the high speed railway and synchronously obtaining total factor data along the line of the railway on the basis of GPS (Global Positioning System) / IMU (Inertia Measurement Unit) positioning and orientation, laser scan and digital imaging technologies. The invention further relates to a special railway measurement mark. The system consists of a laser scanner (1), a digital imaging device (2), a GPS receiver (3), an IMU (4), an industrial computer (5) and a power supply unit (6), and the system can obtain three-dimensional point clouds of rail, roadbed and peripheral environment of the high speed railway and digital images oriented by the earth. The method comprises a method for carrying out movable precise measurement movable precise measurement of the high speed railway and a method for improving the measurement precision by carrying out the simultaneous adjustment with a control point of a rail control network (such as a CPIII foundation pile control network). The system has high integration degree and has the characteristics of high efficiency and high precision, and the precision of the data can reach millimeter level.

Description

technical field [0001] The invention relates to the field of precision railway measurement and high-speed railway track detection, safety and digital railway, especially a high-speed railway mobile precision measurement and measurement based on high-precision global positioning system GPS and inertial measurement device IMU positioning and orientation, laser scanning and digital imaging technology At the same time, the system and method for obtaining all-element data along the railway, the invention also relates to a railway-specific supporting measurement mark. Background technique [0002] High-speed railway has become an important way for people to travel and transport. In recent years, with the continuous maturity and improvement of high-speed railway technology, the operating speed of high-speed railway has been continuously improved, and the rail deformation and subgrade settlement are periodically monitored to ensure the high-speed railway. Safety is the basis for the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61K9/08G01C15/02
Inventor 唐粮
Owner 扬州德可达科技有限公司
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