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The double wheel sensor shows the way.
In all the different fields of passenger and
freight traffic, the double
wheel sensor reveals
its flexible possibilities for use and its reliability. |
 Operation:
The double wheel sensor (DSS) is a contact-less
electronic sensor consisting of two individual systems that are constructed
with special resonant circuits. The mass of metal in the rail wheel flange
passing over the sensor causes damping of the resonant circuits.
This damping can be measured at the output of each
individual system
and can be further processed using a amplifier/buffer module in conjunction
with an evaluation system.
The arrangement of the two systems inside the wheel
sensor is selected in such a way that the
pulses generated by the damping of the sensor overlap and can therefore be used for direction-dependent axle
counting. |
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Double Wheel Sensor (DSS) |
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2N59-1R-200-45 Double Wheel Sensor |
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Train
position detection with direction detection and axle counting
for freight and shunting traffic for speeds up to Vmax 37 mph |
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2N59-1R-200-40 Double Wheel Sensor |
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Train position detection with direction detection and axle
counting for speeds up to Vmax 220 mph |
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N59-1R-200-45 Single Wheel Sensor |
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Train position detection and axle counting for applications
where direction identification is not required. Typically used
in classification/hump yard applications and other presence
detection type applications for speeds up to Vmax 37 mph |
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2N59-1R-200-47 Double Wheel Sensor |
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Train position detection and axle counting specially for tram
vehicles with narrow wheel flanges |
| Advantages |
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| Contact-free operation by the wheel |
Robust construction and resistant to weather conditions |
| Maintenance-free with a high life expectancy |
Small physical dimensions |
| Typically adjustment-free within the entire range of rail
and wheel wear |
Remains uninfluenced by rail currents, harmonics, radio
interference, etc. |
| No weakening of the rail due to installing
the wheel
sensor |
Installation above the sleeper with rectangular cable
inlet possible (advantageous with track works, packing, etc.) |
| Double wheel sensors are
employed for example in: axle counting systems, line notification,
train positioning, hotbox-detecting, AEI reader sites, speed
measurement systems, bridge section protection, point zone
protection, approach and island
overlay circuits, and grade crossing protection systems. |
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