MAB-U MICROPROCESSOR BASED AUTOMATIC BLOCKING
MAB-U – a system of train separation and assurance of train operation safety at single-track and multiple-track railway spans on a real-time basis. It can be used as an autonomous system (based on the components of MPC-U) or as a function integrated into MPC-U.
It assures remote control of facilities at a span (signals, a railway crossing, track circuits, coding of track circuits, etc.) and coordination between stations limiting this span.
It is implemented based on track circuits. The equipment is located at stations adjacent to the span or in transportable modules (ТМ) at the span.
Main functions of MAB-U
MAB-U equipment for Stanishevka-Zhytomyr Span
Technical characteristics of MAB-U
|Length of a span serviced
| Up to 24 km (without installation of intermadiate ТМ),
Up to 48 km (with installation of intermediate ТМ)
|Length of a track circuit
|Is determined with a type of track circuit equipment
|Quantity of crossings at a span
|Up to 30
|5 frequencies (with 2 modulations) of monitoring of track circuits in a range
|From 420 to 780 Hz
|Type of modulation of track circuit monitoring signals
|Additional shunting zone
|Not more than 40 m
|Monitoring of levels of track circuit monitoring signals
|Without use of additional instruments
Displaying a span at ARM DSP