Systems and methods for monitoring a mechanical force applied to a wound site repairing structure are disclosed. In an embodiment, the systems include a wound site repairing structure, a magnetoelastic sensor coupled to the wound site repairing structure, and a detection system. The detection system includes an excitation coil configured to transmit a signal to the magnetoelastic sensor and a detection coil configured to detect a signal indicative of a mechanical force applied to the wound site repairing structure. The detection system also includes a detection unit configured to detect the signal indicative of the mechanical force applied to the wound repairing structure.

Disclosed herein is a belt tension measuring device utilizing a first end roller, the first end roller supporting the belt; a second end roller having an axis of rotation parallel to the first end roller; a support arm pivotably mounted to pivot about an axis parallel to the axis of rotation of the first end roller; a deflection roller rotatably mounted to the support arm at a distance from the pivot of the support arm; the deflection roller having a rotational axis parallel to the axis of rotation of the first end roller, the roller resting upon the belt, configured to bias the belt against the first roller and second roller; and a position indicator measuring the distance between the axis of the deflection roller and a line drawn between the axis of rotation of the first end roller and the axis of rotation of the second end roller.

To provide a tension measuring device which can be easily carried, maintenance of which can be easily performed, and which measures a tension of a wire material to be measured and can prevent the wire material to be measured from being damaged.

A tension measuring device (10) for a wire material according the invention includes a tension measuring unit (12) having a measuring pulley (20) measuring a wire material to be measured (C) while being curved and one pair of guide pulleys (22, 24) guiding the wire material to be measured (C), and a tension display unit (14) electrically connected to the tension measuring unit.

The guide pulleys (22, 24) are disposed to be divided back and forth into an incoming side and an outgoing side to sandwich the measuring pulley (20) therebetween, the tension measuring unit (12) is configured to curve the wire material to be measured (C) at the measuring pulley (20), convert force restoring the curved wire material to be measured to the straight wire material into an electric signal by a tension detecting sensor (26), and transmit the electric signal to the tension display unit (14), and the tension display unit (14) is configured to display the electric signal transmitted by the tension measuring unit (12) by the disposed display unit (100).

Chain tension monitoring device (40) is configured for monitoring a chain tension force (F.sub.C) of a drive chain (27) extending in a longitudinal direction forming closed loop between two sprockets (26, 28). The chain tension monitoring device (40) comprises a sensor device (41) configured for mechanically contacting the drive chain (27), detecting movement of the drive chain (27) transversely, in particular orthogonally, to the longitudinal direction of the drive chain (27), and providing a detection signal indicating the detected movement of the drive chain (27); and an evaluator (50) configured for receiving the detection signal provided by the sensor device (41) and determining a chain tension force (F.sub.C) of the drive chain (27) from said detection signal.

A sheave wheel includes a housing; a wheel attached to the housing and configured to rotate relative to the housing; a depth and tension measurement system attached to the housing and configured to measure a parameter associated with the wheel; and a local control system attached to the housing and configured to exchange information associated with the measured parameter in a wireless manner with a ground control system.

A sheave wheel assembly includes a housing; a wheel attached to the housing and configured to rotate relative to the housing; an imaging system attached to the housing and configured to obtain images of a surrounding of the sheave wheel assembly; and a transceiver attached to the housing and configured to send the images in a wireless manner to a ground control system.

A landing string system and method therefor are provided. The landing string system has a measurement device with mechanical sensors that observe mechanical conditions associated with a landing string. Data-storage devices are in communication with the measurement device. The data-storage devices allow storage, from time to time, of data associated with the observed mechanical conditions. A power assembly provides power to the data-storage devices for at least an expected time of service of the system.

Disclosed is a sheave for use in a tension measurement system to measure a tension force in a cable. The sheave includes a first diameter and a second diameter. The sheave is configured to rotate about an axis to orient the first diameter or the second diameter toward the cable, such that a contact force between the sheave and the cable is measured by a tension sensor to determine the tension force in the cable.

In an aspect there is disclosed examples of a clamp (10, 110) for measuring a tension of a conveyor belt (12). The clamp (10, 110) including a clamping portion (18, 118) arranged to engage with opposing faces of the conveyor belt (12) in a clamped condition to hold the conveyor belt (12) relative to an anchor, and a load sensing arrangement (22, 122) associated with the clamping portion (18, 118) configured to provide a signal indicative of the tension in the conveyor belt (12) in the clamped condition. A system and related method are also disclosed.

In an aspect there is disclosed examples of a clamp (10, 110) for measuring a tension of a conveyor belt (12). The clamp (10, 110) including a clamping portion (18, 118) arranged to engage with opposing faces of the conveyor belt (12) in a clamped condition to hold the conveyor belt (12) relative to an anchor, and a load sensing arrangement (22, 122) associated with the clamping portion (18, 118) configured to provide a signal indicative of the tension in the conveyor belt (12) in the clamped condition. A system and related method are also disclosed.