www.muellerbbm-rail.com

Müller-BBM Rail Technologies GmbH develops and produces

measuring and monitoring systems and software tools specifically

tailored for the needs of railway operators, manufacturers and au-

thorities. The applications of our systems focus on vehicle and track

maintenance and acoustics.

Our measuring and monitoring systems are used at all types of rail

systems as railways, metros or tramways. The development of our

systems is based on the longtime experience and know-how com-

ing from decades of practical work and research in the fields of

railway noise and maintenance.

We offer measurements with our products and also rent our meas-

uring and monitoring systems. We provide trainings for our prod-

ucts and organize conferences in the related railway sectors. As a

partner for technology development and research we support tech-

nical progress with our contributions in standardization committees.

Müller-BBM Rail Technologies GmbH is part of the Müller-BBM

group, one of the leading companies in the field of acoustics.

High-precision monitoring system for wheel treads

Müller-BBM Rail Technologies GmbH

Robert-Koch-Strasse 11

82152 Planegg / Munich

Germany

Phone + 49 89 85602-0

Fax + 49 89 85602-111

info@mbbm-rail.com

www.muellerbbm-rail.com

Wheel Monitoring Systemfor railway, tram and subway

General specifications

Wheel flats, material fractures amplitudes > 0.1mm @ width > 4 cm

Wheel polygons amplitudes > 0.05 mm

Vehicle speed accuracy 3%

Vehicle identification Detection rate up to 100%

Ambient temperature range Regular operation from –10°C to 40°C

Relative humidity 80 % (up to 31°C), linearly decreasing to 50 % at 40°C, non-condensing

Dimensions switchboard (width x height x length)

630 mm x 780 mm x 380 mm

Weight switchboard About 25  kg

Power supply 230 V AC

Current consumption Typically <200 W

Housing material Aluminium (coated)

Vehicle identification system RFID (alternative systems can be incorporated on demand)

WMS- Sensor (width x height x length)

35 mm x 50 mm x 110 mm

Compatible vignole rail profiles S 41/10; S 41/14; S 49; S 54; S 64; UIC 54 E; UIC 54; UIC 60; R 65

Compatible embedded rail profiles Ri 59; Ri 60

Track gauge range 870 mm – 1524 mm

Rail condition Smooth well maintained rail sur-face without defects, welds or joints

Track Straight track, 50 m distance to switches and screwed joints.

Inclination No significant inclination

Speed Constant speed at min. speed 30 km/h (15 km/h with modifications to the track), no maximum speed

Data connection minimum 1 mbit/s

Measuring software m|track

User system requirements

Analysis PC e. g. Notebook, Tablet-PC

Operating system Windows XP, Windows 7 / 8 / 10

Internet connection Required, minimum 1 mbit/s

Memory (RAM) min. 1 GB (recommended)

CPU clock frequency min. 1 GHz (recommended)

Software specifications

Analysis software WMS Info

Functionality Easy and precise indicators representing the wheel damage Recommendations for condition-based maintenance Recommendations for predictive maintenance.

Analysis results Lists of vehicles with most significant defects in analysed period, Analysis period selectable Lists of most recent measurements

Time chart Every vehicle (displaying all results for all wheels from one vehicle)

Indicators Wheel polygon indicator (adjustable) Wheel flat indicator ( adjustable)

Maintenance events Marking wheel maintenance events

Vehicles Adding new vehicles

Languages German, English, Finish. Further languages on request.

Export Export of the graphs (.emf format) Export of the data (ASCII-format).

Colour scale Editable

WMS sensor (glued onto rail) microphone (optional)

Product description

The WMS is designed to monitor wheel tread damages as polygons

and flats and their evolution. It grants:

earlydetectionofwheelpolygons

earlydetectionofwheelflats

increasedsafety

noiseandvibrationreduction

reductionofcomplaintsfromresidents

conditionbasedmaintenance

costsavingfromlessmaintenanceandhigherruntime

ofwheelsets

vehicleinformation(ID,speed,etc.)

The WMS identifies the passing vehicle, analyses the wheel tread

quality, stores the results to a databank and provides reliable, fast

and plain results on

wheelconditionswithinthemonitoredrailfleet,

spreadofwheeldamages

thedevelopmentofwheeldamages

The large datasets collected by the WMS support statistical analyses

on identifying root mechanisms. The following parameters can be

measured by the Wheel Monitoring System:

wheeltreaddefects(e.g.flats,etc.[EN15313])

wheeltreadpolygonization[UICB169/DT405],[EN15313]

The most important characteristics of the WMS are:

fullyautomatedoperation

highmeasurementaccuracywithhighrepeatability

fastandeasyinstallationofthesystem

vehicleidentificationmodule

noisemeasuringandmonitoringmodule

graphicaluserinterfaceprovidedbythesoftware

simpleandeasytouse

productisguaranteedtobesupportedforatleast10years

Technical principle

Quick, robust and non-invasive installation in the track. Specifically

designed WMS sensors measure the wheel tread condition of each

passing wheel (i.e. detecting flats, polygons). A vehicle identification

system registers the vehicle and its numbers. Optional microphones

capture the noise emissions (i.e. detecting malfunctioning aggregates).

Precise and comprehensible results: WMS processes all wheels and

yields indicators for polygonisation and flats. The displayed indica-

tion is proportional to the severity of the damage / polygonisation

and may additionally be adjusted to the customer’s needs.

Option: Mobile Wheel Monitoring System (WMS)

The mobile WMS temporarily offers the benefits of a fully automated

WMS at an attractive price and an even reduced installation time. It

is best used to quickly assess the quality of wheel tread conditions

across the entire fleet.

Wheel Monitoring System WMS, type TMS-01-WS

Standards[ISO/IEC 17025] ..................... General requirements for the competence of testing and calibration laboratories, 2017[EN 15610] .............................. Railway applications – Acoustics – Rail and wheel roughness measurement related to rolling noise generation[EN ISO 266] ........................... Acoustic – Preferred frequencies, 1997-08[EN ISO 3095:2013] ............ Acoustics – Railway applications – Measurement of noise emitted by railbound vehicles, 2014-07[EN 15313] .............................. Railway applications – In-service wheelset operation requirements – In-service and off-vehicle wheelset maintenance, 2016[UIC B 169/DT 405] ............. Catalogue of defects on wheels / axles /wheelsets. Part 1: introductions, terminology, classification of defects, types of defects on wheelsets

1

2

4

3 5

1 Measuring spot• automatic measurement of all

passing vehicles• vehicle identification

2 Measuring and analysis unit• Data analysis• Data compression

3 Remote transmission of data• sends data to database

4 Database• stores all data

5 Analysis at any workplace PC• identification of wheel defects• condition based mainenance

Wheel condition indicator

Good condition Small defect significant defect

Wheel flat time chart for all wheels of a a vehicle with 8 axles (red= left side, black = right side)

Wheel overturning/replacement

verification by m | wheel measurements

Significant wheel flats on axle 3 Overturning removed the wheel flat.

Numbe

r of

M

easu

rem

ents

Perio

d

AxleRigh

t / lef

t

Car I

DIn

dicato

r

Wheel overturning/replacement

Detection of wheel damages in an early state

Polygonisation mainly at right side of vehicle (wheels left side moderately affected):Overturning removed the polygons. Beginning polygonisation at wheel 6 (about 1 month after overturning)

Polygonisation time chart for all wheels of a vehicle with 8 axles (red= left side, black = right side)

m|wheel measurement of polygonised wheel (exemplary)