Patent ID: 7408447

Claim:
A detection system operable for measuring a cadence of an operator pedaling a bicycle, the bicycle having a frame supporting a pedal assembly, comprising: a cadence circuit operatively connected to the bicycle for measuring the cadence of the operator pedaling the bicycle and generating a cadence signal corresponding to the measured cadence; and a transmission circuit for generating a radio frequency signal corresponding to the cadence signal and transmitting the radio frequency signal to a target, wherein the cadence circuit includes: a sensing circuit mounted to one of the frame and the pedal assembly; an inducement element mounted to the other of the frame and pedal assembly, the inducement element causing the sensing circuit to generate an electrical signal in response to a revolution of the pedal assembly; and wherein the sensing circuit includes: a pickup coil generating an induced signal in response to the inducement element passing in proximity thereto; and a transformer operatively connected to the pickup coil for transforming the induced signal and providing the induced signal to the transmission circuit as the cadence signal.