A bicycle component with a measuring device with a housing and a measuring probe connected therewith, including a probe body having an exterior opening. The exterior opening is connected through an air guide with a barometric pressure sensor disposed remote from the exterior opening. The air guide includes at least two air ducts and an internal chamber that is connected with two air ducts. One of the air ducts is configured as a supply duct and begins at the exterior opening. The other of the air ducts serves as a sensor duct and connects the internal chamber with the barometric pressure sensor.

Improved techniques and systems are disclosed for determining the components of resistance experienced by a wearer of a wearable device engaged in an activity such as bicycling or running. By monitoring data using the wearable device, improved estimates can be derived for various factors contributing to the resistance experienced by the user in the course of the activity. Using these improved estimates, data sampling rates may be reduced for some or all of the monitored data.

An external force torque due to a collision as a collision torque estimation value is estimated by subtracting a dynamic torque obtained by an inverse dynamic calculation of a robot from a torque output to a gear reducer by a motor. It is determined that the robot receives an external force if the collision torque estimation value is greater than a predetermined collision detection threshold.

An external force torque due to a collision as a collision torque estimation value is estimated by subtracting a dynamic torque obtained by an inverse dynamic calculation of a robot from a torque output to a gear reducer by a motor. It is determined that the robot receives an external force if the collision torque estimation value is greater than a predetermined collision detection threshold.

A power meter for a bicycle includes a body having a torque input section and a torque output section, the body configured to transmit power between the torque input section and the torque output section. The power meter also includes an electronic device having one or more antennae configured to communicate a signal wirelessly.

Power transmitted from a cyclist to a bicycle through crank arms is indirectly measured by performing calculations on direct physical measurements. The direct physical measurements are taken from sensors that can be non-rotationally coupled to the frame of the bicycle. The sensors can be integrated into the frame or installed as a module within a standard, unmodified bicycle bottom bracket. Measured power can be viewed by the cyclist using a wirelessly connected user interface device.

A method and a device for measuring a tangential reaction force of a resistance device on a flywheel, and the reaction force multiply the radius of the flywheel to obtain a torque, such that the torque multiply a gear ratio is the torque to overcome the resistance of flywheel on the drivetrain. The torque to overcome the resistance of flywheel on the drivetrain adding a torque to overcome the inertia of the flywheel and mechanical friction under the state of no resistance is the total torque presented on the drivetrain. Such that using the total torque to calculate power and energy consumption.

The method involves a step of measurement of a bearing force (Fp.sub.n) on a pedal (1) of the pedal set (4), different from the useful effort, exerted by the individual during a pedalling cycle, a step of determination of a maximum (max(Fp.sub.n)) of the bearing force measured during the pedalling cycle (CP.sub.j), and a step of estimation of a mean useful effort exerted by the individual during said pedalling cycle from the maximum of the bearing force determined and with the aid of a predetermined correlation function between a maximum bearing force during a pedalling cycle and a mean useful effort in said cycle.

A method estimates a torque of a heat engine in a vehicle hybrid transmission including at least a heat engine and an electric machine together or separately supplying a heat engine torque and heat engine torque intended for wheels of the vehicle. The method uses a measurement of a speed of the heat engine, a value of the heat engine torque reference, and a value of the electric machine torque. The method also sums an estimate of a total torque supplied by the transmission to the wheels and of an estimate of an equivalent resistive torque of the transmission to determine the estimated heat engine torque.

Power transmitted from a cyclist to a bicycle through crank arms is indirectly measured by performing calculations on direct physical measurements. The direct physical measurements are taken from sensors that can be non-rotationally coupled to the frame of the bicycle. The sensors can be integrated into the frame or installed as a module within a standard, unmodified bicycle bottom bracket. Measured power can be viewed by the cyclist using a wirelessly connected user interface device.