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Electric arc capturing and positioning system for electronic railway connecting net and method thereof

A technology for electrified railways and positioning systems, applied in satellite radio beacon positioning systems, radio wave measurement systems, railway signals, etc., can solve problems such as inability to complete catenary continuous detection

Inactive Publication Date: 2011-02-02
扬州德可达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is still a single-point detection method, which can only monitor the temperature of the position where the sensor is installed, and cannot complete the continuous detection of the entire line of the catenary.

Method used

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  • Electric arc capturing and positioning system for electronic railway connecting net and method thereof
  • Electric arc capturing and positioning system for electronic railway connecting net and method thereof
  • Electric arc capturing and positioning system for electronic railway connecting net and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Embodiment 1: Assuming that the running speed of the electric locomotive is 350 km / h, i.e. 97.2 m / s, the frequency of the GPS receiver is 2 Hz, the frequency of the IMU is 256 Hz, and the positioning accuracy of the differential GPS / IMU is centimeter level, in this embodiment The high-speed digital imaging device 1 selects a high-speed digital camera, and the shooting speed is 2000 frames per second, so the positioning accuracy of the arc is about 5 cm. If you need to improve the positioning accuracy, you can choose a higher shooting speed. The capture and positioning of the arc does not require high image resolution, and the optimization of storage and arc recognizability must be considered comprehensively here. The lens of the high-speed digital imaging device 1 should be a fixed-focus lens, and the focal point is the contact point between the pantograph and the railway catenary.

Embodiment 2

[0039] Embodiment 2: in the present embodiment, high-speed digital imaging equipment 1 selects a high-speed digital thermal infrared camera for use, and the shooting speed is 160 frames per second. Assuming that the running speed of the electric locomotive is 300 kilometers per hour, that is, 83.3 meters per second, the GPS receiver The frequency is 2Hz, the frequency of the IMU is 256Hz, and the positioning accuracy of the differential GPS / IMU is centimeter level. The acquired data will be continuous temperature data every 0.5 meters. During data processing, the temperature range can be set to classify the data , this method can not only locate the start and end positions of the arc, but also monitor the abnormal temperature of the entire line of the catenary. Similarly, the way to improve positioning accuracy is to choose a thermal infrared camera with faster shooting speed.

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Abstract

The invention relate to the field of electronic railway monitoring and safety, in particular to an electric arc capturing and positioning system for an electronic railway connecting net and a method thereof based on a high-accuracy global positioning system GPS / inertia measurement device IMU positioning and orienting technology and a high-speed digital imaging technology. The system consists of high-speed digital imaging equipment (1), a GPS receiver (2), an IMU inertia measurement device (3), a fixing bracket and adaption device (4), an industry control computer (5), a display and control device (6) anda power supply device (7). The system is arranged on the top of an electrical locomotive, when the electrical locomotive runs, the high-speed digital imaging equipment (1) continuously shoots the images of a position that pantograph of the electric locomotive is contacted with the connecting net, and GPS and IMU are combined to record the tracing information of operation of the electric locomotive; by data post-treatment, a plurality of images of the electric arc in an image sequence are automatically extracted; the electric arc images are matched with the operation trace of the electric locomotive by using time parameters of the GPS; and the start and stop positions, durability and continuity distance of generation of the electric arc are calculated.

Description

technical field [0001] The invention relates to the field of electrified railway monitoring and safety, in particular to a catenary arc capture and positioning system and method for electrified railways based on high-precision global positioning system GPS / inertial measurement unit IMU positioning and orientation technology and high-speed digital imaging technology. Background technique [0002] In the electrified railway, the catenary is the main power supply equipment of the electrified railway, and the electric locomotive obtains electric energy through the catenary. Current receiving refers to the dynamic process of the contact between the bow head of the pantograph of the high-speed train and the contact wire, relative sliding to obtain electric energy, and transmit it to the electric locomotive. It is a coupling vibration problem between the high-speed moving pantograph and the contact wire. Including a variety of mechanical motion types and electrical state changes, t...

Claims

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Application Information

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IPC IPC(8): G01B11/00G01R31/08B61L1/00G01B11/24G01S19/45
Inventor 唐粮
Owner 扬州德可达科技有限公司
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