Locomotive high-precision fusion positioning scheme applied to iron and steel enterprises

Abstract

The invention discloses a locomotive high-precision fusion positioning scheme applied to iron and steel enterprises. The method comprises the following steps that differential GNSS positioning is carried out, when a locomotive is far away from a target positioning point, a satellite signal received by a locomotive-mounted receiver is combined with a carrier phase collected by a ground reference station to calculate a difference solution coordinate, and high-precision positioning of the locomotive in the running process can be achieved; gray bus positioning is carried out, a Gray bus antenna box are installed at the bottom of a locomotive, two ends of the Gray bus antenna box are respectively provided with one Gray bus antenna box to achieve hardware redundancy, the position of the locomotive is accurately positioned in an electromagnetic coupling mode between the antenna boxes and a ground magnetic scale, the positioning accuracy reaches 5 mm, and the ground magnetic scale is arrangedat the position 80 m in front of a station point and covers a curve section of a track. According to the method, the locomotive can be conveniently positioned in the running process through differential GNSS positioning, the locomotive is positioned through Gray bus positioning when the locomotive is in a curve, and the problem that the locomotive with large track curvature cannot be positioned onthe curve through a laser range finder is solved.

Description

technical field [0001] The invention relates to the technical field of locomotives in iron and steel enterprises, in particular to a high-precision fusion positioning scheme for locomotives applied in iron and steel enterprises. Background technique [0002] The molten iron produced by the ironworks of iron and steel enterprises is transported to the steelworks by locomotives pulling torpedo tank cars. When unmanned locomotives are aligned at each station, accurate and reliable position data is required. Due to the specific and complex working conditions of the factory area, a single The positioning equipment cannot meet the high-precision positioning requirements of unmanned locomotives. There are mainly the following special circumstances: 1. The curvature of the track in front of the station point is large, and the locomotive cannot be positioned by the laser rangefinder on the curve; 2. Due to weather or construction environment Blocking causes satellite signal drift and...

AI Technical Summary

Problems solved by technology

[0002] The molten iron produced by the ironworks of iron and steel enterprises is transported to the steelworks by locomotives pulling torpedo tank cars. When unmanned locomotives are aligned at each station, accurate and reliable position data is required. Due to the specific and complex working conditions of the factory area, a single The positioning equipment cannot meet the high-precision positioning requirements of unmanned locomotives. There are mainly the following special circumstances: 1. The curvature of the track in front of the station point is large, and the locomotive cannot be positioned by the laser rangefinder on the curve; 2. Due to weather or construction environment Blocking, resulting in satellite signal drift and inaccurate locomotive positioning; 3. There is a crossing in front of the station, and it is not allowed to install the gray bus ground magnetic ruler