Abstract
Various principles can be used to implement intelligent track circuits: voltage regulation of the power supply, compensation methods for switching on rail lines and track circuit devices, receiver sensitivity adjustment, comparison of two electrical parameters of one, two, or more track circuits, as well as a combination of these methods. At present, such improvement of track circuits is becoming relevant, which would make it possible to exclude from the circuits one of the most unreliable elements - an insulating joint, use a modern microprocessor element base in devices for monitoring the state of track sections, thus ensure their reliable operation. This will significantly reduce the costs of building and operating interval control systems and increase train traffic safety. These requirements are met by intelligent track circuits, which consider the current value of the insulation resistance, the rate of change of this resistance, and the longitudinal asymmetry.
Highlights
A national transport policy of many developed countries is currently based on the development and promotion of intelligent transport systems (ITS)
Track control systems must be implemented with the help of fundamentally new methods, which increase the length of the rail line, reduce construction and operating costs, reduce the minimum allowable insulation resistance, increase shunt sensitivity, and reduce floor appliances [3, 4]
To research the track circuits, the scheme substitution of the rail line in normal and shunt modes should be represented by one generalized scheme, with the ability to set an uneven change in insulation resistance along a rail line and move trains of any length
Summary
A national transport policy of many developed countries is currently based on the development and promotion of intelligent transport systems (ITS). An important and urgent problem is developing such methods and devices for monitoring the state of rail lines, which reduce the minimum allowable insulation resistance value, increase shunt sensitivity, remove the insulating joints from the track circuits, simplify their maintenance [1]. Using tone track circuits without insulating joints does not solve the problem because they have short length, large quantity floor appliances [2]. Track control systems must be implemented with the help of fundamentally new methods, which increase the length of the rail line, reduce construction and operating costs, reduce the minimum allowable insulation resistance, increase shunt sensitivity, and reduce floor appliances [3, 4]
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