Verify
railroad tracks
with sensors
M5, M25 and scanner M2D at a speed of 120 km/h (74.5 miles/h) |
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Rail fastening system |
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In
Japan and Korea earthquakes frequently occur, therefore the mounting screws
has to be surveyed to avoid dangerous situations and to care for the security
of the passengers.
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• control
of rail fastening system
• registration of stud-bolts
• output of alarm signals
• contiuous recording of signals
• control of rail profile
• detection of degree of abrasion |
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Three
M5 sensors are controlling the Korean rail
system. The reference signal for the fastening of the screws is displayed
by Sensor no. 2.
The inspection train moves at a speed of 80 km/h (49.7 miles/h.). On the
way, the fastening screws are surveyed. If a loose screw is detected,
the location of the defect screw is stored in a protocol. Afterwards the
repair team is able to fix / replace the screws quickly, in that they
know exactly the position of the fault.
With the successor M7 this
measurement would be possible at a speed of 100 km/h (62.14 miles/h.).
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The track
Tokyo - Nagasaki is controlled every morning by a special measuring train,
equipped with sensor technology. By using M25
distance sensors, the inspection train is able
to run at a speed of 120 km/h (74.5 miles/h.) This speed is necessary,
to verifiy the whole track length, before Shikansen starts to operate.
This measurement would be even faster with the successor
M27. The inspection train could move at a speed
of 150 km/h (93.2 miles/h.)
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| Rail
profile and gage of the track |
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Synchronistical
to the screw inspection, the rail profile and
the gage of the track can be checked by M2D
scanners. Analysis, storage and real-time recall
are supporting the effective work scheduling of the maintenance team.
Abrasion, cracks and dimensional variations are detected at an early stage
- long before ending in disaster.
The M2D scanner is recording the rail profile with up to 50 scans per
second. In doing so, the rails are visualized via laptop for exact monitoring.
The M2D-Vision-Demo-Software
enables the automatically compensation of vacillation, caused by movement
of object to be measured during the traction operation. Several sensors
may be synchronized. Tapering and gage of trace can be collected and calculated
online.
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| On simultaneous storage of
GPS data, all profiles can be analyzed, evaluated and documented unhurriedly
after the inspection tour. The track is staying open for business as usual.
At the same time, the GPS data are giving information about the exact failure
location. |
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For over 20 years MEL is
the most innovative producer of intelligent sensors. Take advantage of
our experience.
We are delivering turnkey solutions, or soft- and hardware for integration
into user specific projects.
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