Pedal force or torque measurement. 2

[itsmoked]

Working on an E-Bike (like) application where the pedal force is monitored to control a motor.

There are chains, sprockets, and shafts involved.
Can anyone point me towards a way (transducer?) to monitor the pedal force or torque?

Keith Cress
kcress -

http://www.flaminsystems.com

 

[MintJulep]

Seems to be an already solved problem.

https://www.google.com/amp/s/

http://www.cyclingweekly.com/group-tests/power-meters-everything-you-need-to-know-35563/amp

 

[Strong]

I use a strain gage telemetry system that has a 9V battery powered transmitter for machinery. The strain gage can be setup for torque, bending or axial load. It can measure static and dynamic torque. The system can be mounted on most any pedal crank to measure bending and thereby torque by doing a simple calibration with a known weight at a known radius. Contact

http://wwww.binsfeld.com.

You may be able to rent a system for short-term development work.

Walt

 

[rb1957]

as per MJ … surely a well-solved problem … most competitive bikes (exercise bikes too ?) measure cyclist work output

another day in paradise, or is paradise one day closer ?

 

[itsmoked]

This feedback control to run the motor so I'm not sure the 'cyclist output' stuff will work as they are more interested in heavily averaged over-time type results. However, their actual sensors and sensor schemes certainly look applicable.

Thanks!



Keith Cress
kcress -

http://www.flaminsystems.com

 

[FreddyNurk]

This might be useful in terms of how to get the data from the sensors, it might also describe typical power meter or pedal force data and updates.

EDMS Australia