IMPROVEMENTS TO CYCLIC CRANKED SYSTEM DATA GATHERING

摘要

A power meter for a crank arm (14) driven axle apparatus has electronics housed within or on the axle (12), and a force sensor (20) mounted on the crank arm (14) and optionally a force sensor on or in the axle (60). The power meter arranged to detect torque applied to an axle and/or crank arms connected to the axle. The crank arm and axle can form a unitary component. The electronics (16) can be provided as a module for insertion into the axle. A protective cover (44) can be provided over an opening in the crank arm to the electronics. Electrical connections to the force sensor(s) can be hard wired or connectable. The electronics can be provided within a housing (16a), which can include a battery (11) power supply, or the battery (11) can otherwise be provided within the axle/bottom bracket of a cycle. A rotational sensor (66) or encoder can be provided on the axle to detect characteristics of rotational motion of the axle. A second crank arm (14b) can be connected to a free end of the axle opposite the previously attached crank arm.