Rail car positioning method and system

Abstract

The invention provides a rail car positioning method and system. The method comprises the following steps: establishing communication connection between vehicle-mounted equipment of the rail car and positioning equipment, wherein the positioning equipment is installed beside a track where the track car runs, and the vehicle-mounted equipment and the positioning equipment are in one-way communication based on the IrDA technology; the positioning equipment sends a landmark signal of the positioning equipment to the vehicle-mounted equipment; and the vehicle-mounted equipment positions the rail car on the rail according to the received landmark signal. By means of the scheme, on one hand, electromagnetic interference existing in a radio frequency identification technology positioning scheme is effectively avoided, the size of equipment is reduced, the communication speed is high, and the positioning requirement when the rail car runs at a high speed can be met; and on the other hand, the positioning equipment is low in overall power consumption, small in size, low in price and capable of being densely deployed, new positioning equipment can be used for positioning when data packet loss is very close in the communication process, and the stability and the accuracy of positioning the rail car on the rail are effectively improved.

Description

technical field [0001] This application relates to the technical field of intelligent rail transit, in particular to a method and system for positioning rail vehicles. Background technique [0002] The intelligent rail vehicle adopts a suspended vehicle, and the track has bifurcations. It is used in hospital materials, prison inspections, construction site transportation, engineering material transfer, passenger and cargo transportation and other fields. The intelligent rail car can run automatically, and can carry multiple independently running rail cars in a track system, and ensure that each vehicle runs safely without collision. The smart rail car has a positioning function and uses a wireless method to exchange information with the roadside equipment. Under the coordination of the roadside equipment, the smart rail car has an anti-collision function, can independently select the track path according to the mission line, and avoid obstacles ahead. [0003] The size of t...

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

Images