A medical device includes a shaft comprising a proximal end portion and a distal end portion. A beam has a proximal end portion, a distal end portion, and a middle portion, and one or more strain sensors are on the middle portion. The proximal end portion of the beam is matingly coupled to the distal end portion of the shaft to form an interface. The beam comprises a discontinuity between the interface and the middle portion of the beam. In some embodiments, the medical device includes a link and the distal end portion of the beam is matingly coupled to the link to form a second interface. A second discontinuity is between the second interface and the middle portion of the beam. In some embodiments, an anchor is coupled to the shaft and the proximal end portion of the beam is matingly coupled to the anchor.

A squatting bionic device of a human lower-limb joint is provided. In the squatting bionic device, a vertical support plate is provided on the device with a sliding table, which is driven by a first motor to slide up and down in a height direction of the vertical support plate or to be fixed on the vertical support plate. A horizontal fixed shaft is fixed on the sliding table. The middle of the fixed shaft is connected with a femoral shaft through a first universal joint. A lower end of the femoral shaft is fixedly connected with a lower femur simulation block. A wire rope is wound around a rotation shaft of a second motor fixed on a base. One end of the wire rope is fixed on the rotation shaft of the second motor, and the other end thereof extends upwards.

A squatting bionic device of a human lower-limb joint is provided. In the squatting bionic device, a vertical support plate is provided on the device with a sliding table, which is driven by a first motor to slide up and down in a height direction of the vertical support plate or to be fixed on the vertical support plate. A horizontal fixed shaft is fixed on the sliding table. The middle of the fixed shaft is connected with a femoral shaft through a first universal joint. A lower end of the femoral shaft is fixedly connected with a lower femur simulation block. A wire rope is wound around a rotation shaft of a second motor fixed on a base. One end of the wire rope is fixed on the rotation shaft of the second motor, and the other end thereof extends upwards.

A hitching system for connecting a towed vehicle to a towing vehicle comprising: a connector member for engaging with a connection point on the towing vehicle; a shaft member connected at one end to the connector member and at a second opposing end to a housing fixed to the towed vehicle; a plurality of sensor elements mounted to said shaft member, at least one of the sensor elements configured to measure a lateral force present in the shaft member during towing of the towed vehicle by the towing vehicle; and a computer processor mounted with respect to the towed vehicle for receiving a signal from at least one of the sensor elements representative of the measure of the lateral force present in the shaft member and processing said signal to control motion of the towed vehicle.

A hitching system for connecting a towed vehicle to a towing vehicle comprising: a connector member for engaging with a connection point on the towing vehicle; a shaft member connected at one end to the connector member and at a second opposing end to a housing fixed to the towed vehicle; a plurality of sensor elements mounted to said shaft member, at least one of the sensor elements configured to measure a lateral force present in the shaft member during towing of the towed vehicle by the towing vehicle; and a computer processor mounted with respect to the towed vehicle for receiving a signal from at least one of the sensor elements representative of the measure of the lateral force present in the shaft member and processing said signal to control motion of the towed vehicle.

A pipe tensioner for laying or recovering a subsea pipeline comprising at least two opposing continuous tracks able to hold the subsea pipeline, each track having a plurality of pads mounted on the continuous track for contacting the subsea pipeline, characterised in that at least one pad is a load pad comprising one or more load sensors for measuring loading on the load pad during handling of the subsea pipeline.

A pipe tensioner for laying or recovering a subsea pipeline comprising at least two opposing continuous tracks able to hold the subsea pipeline, each track having a plurality of pads mounted on the continuous track for contacting the subsea pipeline, characterised in that at least one pad is a load pad comprising one or more load sensors for measuring loading on the load pad during handling of the subsea pipeline.

A bicycle power meter includes a strain gauge, a signal processing unit, a processor, and a signal transmitter. The strain gauge is disposed on at least one of an outer peripheral wall and an inner peripheral wall of a handlebar of a bicycle. The signal processing unit connected to the strain gauge by signal correspondingly outputs an electrical signal based on a deformation of the handlebar detected by the strain gauge. The processor connected to the signal processing unit by signal receives the electrical signal sent by the signal processing unit and calculates a measuring value based on the electrical signal and sends the measuring value in an output signal. The signal transmitter connected to the processor by signal receives the output signal sent by the processor and converts the output signal to a wired or wireless signal and sends the wired or wireless signal to a terminal device.

A bicycle power meter includes a strain gauge, a signal processing unit, a processor, and a signal transmitter. The strain gauge is disposed on at least one of an outer peripheral wall and an inner peripheral wall of a handlebar of a bicycle. The signal processing unit connected to the strain gauge by signal correspondingly outputs an electrical signal based on a deformation of the handlebar detected by the strain gauge. The processor connected to the signal processing unit by signal receives the electrical signal sent by the signal processing unit and calculates a measuring value based on the electrical signal and sends the measuring value in an output signal. The signal transmitter connected to the processor by signal receives the output signal sent by the processor and converts the output signal to a wired or wireless signal and sends the wired or wireless signal to a terminal device.

A bicycle power meter includes a strain gauge, a signal processing unit, a processor, and a signal transmitter. The strain gauge is disposed on at least one of an outer peripheral wall and an inner peripheral wall of a stem of a bicycle. The signal processing unit connected to the strain gauge by signal correspondingly outputs an electrical signal based on a deformation of the stem detected by the strain gauge. The processor connected to the signal processing unit by signal receives the electrical signal sent by the signal processing unit and calculates a measuring value based on the electrical signal and sends the measuring value in an output signal. The signal transmitter connected to the processor by signal receives the output signal sent by the processor and converts the output signal to a wired or wireless signal and sends the wired or wireless signal to a terminal device.