As we all know the Pedal Assist System (PAS) sensor only produces an "I am pedalling" signal when pedalling forward but not when turning the cranks backwards (are there excptions to this?).
I am idley curious as to how the sensor works out the difference between forward and backwards crank rotation - anyone?
As we all know the Pedal Assist System (PAS) sensor only produces an "I am pedalling" signal when pedalling forward but not when turning the cranks backwards (are there excptions to this?).
I am idley curious as to how the sensor works out the difference between forward and backwards crank rotation - anyone?
The sensor has a hall sensor in it, which will switch from off to on when the correctly orientated magnetic field passes it in the right direction. It will also switch the same when the opposite magnetic field passes it in the opposite direction. Wrong field direction or wrong movement direction won't switch it. A double hall sensor will only switch in one movement direction and one field direction.
As we all know the Pedal Assist System (PAS) sensor only produces an "I am pedalling" signal when pedalling forward but not when turning the cranks backwards (are there excptions to this?).
I am idley curious as to how the sensor works out the difference between forward and backwards crank rotation - anyone?
The little chips we call 'hall sensors' have rather more inside them than just the sensing element, so they can be made sensitive to specific magnetic field changes.
MTF Enterprises announces acquisition of EMU Electric Bikes
Wisper 806T folding bike wins Which? ‘Best Buy’
Sustrans calls for protected cycle lanes
Amazon launch their first UK e-cargo micromobility hub