A power measurement device, which may be mounted to an inside area of a crank arm, includes processing circuitry within a housing. The processing circuitry is coupled with strain gauges mounted on the crank arm, and produces a power value that is wireless transmitted to a separate display that may receive and display power measurements. The housing may include a mounted portion and a cantilever portion where the mounted portion houses the processing circuitry and the cantilever portion houses batteries supply energy for the processing circuitry and other features.

A power measurement assembly mounted within an axle. In a specific example, the axle is a spindle that is interconnects the cranks of a bicycle, exercise, bicycle, or other fitness equipment. The power measurement assembly may include strain gauges connected with an appropriate circuit (e.g., Wheatstone bridge) that provides an output of the force on the axle by a rider pedaling the crank. In the case of an axle, the strain gauges measure the torsion due to the applied torque on the crank. The value is converted to a power value by a processor and that value is then wirelessly transmitted for display. The processor and/or the transmitter may be mounted within the axle. A separate power measurement assembly may be mounted on one of the cranks, which may include its own processor and transmitter or may take advantage of the processor and transmitter within the axle.

A pedal exercise signal detection device includes a sleeve having an outer circumference having a pressure signal connection device and a pressure detection unit mounted thereon; a first bearing disposed in the sleeve; a stator having a positioning axle having an end formed with a fastening hole; a fastener element fastening the stator and the sleeve together; a pedal having an axle hole into which the sleeve is inserted to be positioned therein and a receiving trough including a through opening corresponding to the pressure signal connection device; and a control circuit board disposed in the receiving trough and including signal reader units that extend through the through opening and corresponding to the pressure signal connection device.

A device to monitor power and torque being transmitted through a rotating or stationary shaft for use as a dynamometer on a vehicle or machine drivetrain. It is complete with a power source and wireless data transmission device compatible with common consumer electronics, as well as a device to communicate with a vehicles OBD-II system if so equipped. In contrast to prior art devices, it is wireless, requires no modification to the existing drivetrain, requires no dedicated data acquisition system, and is robust enough to be used under normal operating circumstances for the machine or vehicle it is installed on.

A power measurement assembly mounted within an axle. In a specific example, the axle is a spindle that is interconnects the cranks of a bicycle, exercise, bicycle, or other fitness equipment. The power measurement assembly may include strain gauges connected with an appropriate circuit (e.g., Wheatstone bridge) that provides an output of the force on the axle by a rider pedaling the crank. In the case of an axle, the strain gauges measure the torsion due to the applied torque on the crank. The value is converted to a power value by a processor and that value is then wirelessly transmitted for display. The processor and/or the transmitter may be mounted within the axle. A separate power measurement assembly may be mounted on one of the cranks, which may include its own processor and transmitter or may take advantage of the processor and transmitter within the axle.

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.

A power measurement device, which may be mounted to an inside area of a crank arm, includes processing circuitry within a housing. The processing circuitry is coupled with strain gauges mounted on the crank arm, and produces a power value that is wireless transmitted to a separate display that may receive and display power measurements. The housing may include a mounted portion and a cantilever portion where the mounted portion houses the processing circuitry and the cantilever portion houses batteries supply energy for the processing circuitry and other features.

The invention relates to an apparatus for measuring and determining the force, the torque and the power on a crank, in particular the pedal crank of a bicycle, comprising an evaluation device, in particular a bicycle computer, and at least one pedal, wherein the force and angular speed variables are converted into electrical signals and supplied to the evaluation device, the pedal comprises a pedal body, a deformation element, a pedal shaft and an angle transmitter, and wherein the force variable is determined by measuring the deformation of the deformation element using strain gauges, preferably by measuring the individual normal strains of the strain gauges, and wherein four pairs of strain gauges assigned to each other are arranged at different angles, preferably +/45, with respect to the pedal shaft.

The embodiments disclosed herein relate to a method for obtaining a determined torque value experienced by a bracket of a valve system, having the steps of providing a strain gauge mounted onto the bracket; applying a first known torque to bracket; obtaining a first strain measurement data from the strain gauge; applying a second known torque to bracket; obtaining a second strain measurement data from the strain gauge; determining a relationship between the first known torque, the first strain measurement data, the second known torque and the second strain measurement data; and applying an unknown strain to the bracket and converting the unknown strain to the determined torque value of the bracket using the determined relationship.

A method of transient testing a prime mover wherein the prime mover is coupled to a power absorbing dynamometer. The method comprising the steps of: receiving a first load setpoint and a first rotational speed setpoint, wherein the first load setpoint and the first rotational speed setpoint correspond to a first time point in a prime mover testing profile, wherein the prime mover testing profile is a model of a real-world testing profile; outputting the first load setpoint or the first rotational speed setpoint to the power absorbing dynamometer; determining a first baseline prime mover demand input using a first feedforward loop; determining a first prime mover demand input, wherein the first prime mover demand input is based on the first baseline prime mover demand input and the first load setpoint or the first rotational speed setpoint; outputting the first prime mover demand input to the prime mover; wherein, upon the first load setpoint being provided to the power absorbing dynamometer, the first prime mover demand input is based on the first baseline prime mover demand input and the first rotational speed setpoint, and wherein, upon the first rotational speed setpoint being provided to the power absorbing dynamometer, the first prime mover demand input is based on the first baseline prime mover demand input and the first load setpoint; receiving a first load measurement value and a first rotational speed measurement value; and determining a second prime mover demand input based on: the first prime mover demand input or a second baseline prime mover demand input; a second load setpoint or a second rotational speed setpoint; and the first load measurement value or the first rotational speed measurement value.