A rail car positioning method and system

Abstract

The present application provides a rail car positioning method and system. The method includes: establishing a communication connection between the on-board equipment of the rail car and the positioning device; wherein, the positioning device is installed on the side of the track where the rail car travels, and one-way communication is performed between the on-board device and the positioning device based on IrDA technology; The vehicle-mounted equipment sends the landmark signal of the positioning equipment; the vehicle-mounted equipment locates the rail car on the track according to the received landmark signal. Using this solution, on the one hand, it effectively avoids the electromagnetic interference existing in the radio frequency identification technology positioning solution, reduces the volume of the equipment, and has a fast communication speed, which can meet the positioning requirements when the rail vehicle runs at a higher speed; on the other hand , the overall positioning equipment has low power consumption, small size, and low price, and can be deployed intensively. After the data packet is lost in the communication process, there will be a new positioning equipment for positioning, which effectively improves the positioning of rail vehicles on the track. time stability and accuracy.

Description

technical field [0001] The present application relates to the technical field of intelligent rail transit, and in particular, to a rail car positioning method and system. Background technique [0002] Intelligent rail vehicles are suspended vehicles with bifurcated tracks, and are used in hospital materials, prison inspections, construction site transportation, engineering material transfer, passenger and cargo transportation and other fields. Intelligent railcars can run automatically, and can carry multiple railcars running independently in one rail system, and ensure safe and collision-free operation of each vehicle. The intelligent rail car has a positioning function and uses a wireless method to exchange information with roadside equipment. Under the coordination of the roadside equipment, the intelligent rail car has an anti-collision function, which can independently select the track path according to the task line and avoid obstacles ahead. [0003] The size of the ...

AI Technical Summary

Problems solved by technology

Generally, positioning transponders are difficult to install densely. On the one hand, the cost is high. On the other hand, it is limited by the antenna size and range. The more reliable; in order to locate the installation of transponders densely, with high positioning accuracy and fast tolerance speed, a communication method with high data rate and short working distance is required

[0004] At present, although the positioning scheme based on active transponders (positioning transponders) has high precision and fast response speed, it is expensive and cannot be deployed in high density; positioning based on radio frequency identification technology (Radio Frequency Identification, referred to as RFID) The solution is greatly affected by the metal on the track and cannot be used normally; the positioning solution based on low-frequency RFID can find an undisturbed space between the track and the smart rail car, but due to the low carrier frequency, it is difficult to bear high baud High-speed communication, resulting in low scanning speed, limiting the speed of smart rail cars

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