EMETRION meters with - Görlitz AG

"Powermeter" klingt nach Energiezähler, ist es auch, aber
für die Tretleistung des Radfahrers (Grafik: SRM)
kgs and more, whilst racing bikes
should not be significantly heavier
than the UCI weight limit of 6,800
grams.
Power measurement
on a racing bike
One of the pioneers in solutions
to this is Uli Schoberer from SRM,
Aachen. He and his team have
equipped most of the professional
teams with a power- monitoring
system.
The trick is to place small flexible
stretch strips between the inner
and the outer ring of the crank.
With any increase in the cyclist’s
pedal strokes, the strips change
shape and this changes their electrical
resistance.
With a formula connected to the
pedal strokes and speed, a small
computer can calculate the actual
power from this value. In 1988,
Spitzenleistung im Radsport ist das Ergebnis intensiven
und kontrollierten Trainings (Foto: Hoffmann)
Uli Schoberer installed this system
for Tour Winner Greg Lemond.
Lance Armstrong is also known
for his use of biometrics to steer
his training and competition preparation.
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training purposes and not during
competitions. Their use is not that
helpful in the race itself as Olaf
Ludwig from T-Mobile explains:
„In training, we can control the
optimum phases for the individual
cyclist but in the race, when the
situation depends on tactical and
team strategies, it is mainly the
competitor who decides how fast
he has to go.
You cannot ask your computer
how to win the race, you have to
keep up with the race - or lose.“
So the biometrics can help to
define race strategies, but not
the individual’s reaction during
the race.
Actual values
online in TV
Biometrics –above
all for training
A completely new project was
initiated by SRM and the German
television channel (Saarländischer
Rundfunk) in the Tour de France
Because the measurement devices 2004. SRM, T-Mobile, and SR
and computers were separate add- installed a system to put the acons
to the bike – even if the weight tual biometric values of selected
was just some 100 grams – most racers online on the TV screen
of the 1_BILDER_Anz.FH10 athletes just used Thu them Nov 11 for 11:16:03 and 2004 T-Mobile’s Seite 1 homepage. The
C M Y CM MY CY CMY K
measurement data of Jens Voigt,
Matthias Kessler, and Gerrit Glomser
was put online. To achieve
this, T-Online installed a batterypowered
GPRS data modem onto
the bikes and connected them to
SRM´s computer.
Via the French GSM base stations
along the Tour’s racecourse, the
data was communicated via GPRS
to the central IT-Server in Bonn
and transmitted to the ARD TV
programme and the Web server
of T-Mobile.
The TV audience was able to monitor
in real time how arduous the
11/2004 METERING automation 7