A sensor includes a base, and first and second resistance lines. The base extends in a direction intersecting with a central axis. The first resistance lines are arrayed in a circumferential direction on a surface of the base. The second resistance lines are arranged concentrically with the first resistance lines and between the first resistance lines in the circumferential direction on the surface of the base. In the first resistance lines, the number of regions of the resistance line along the circumferential direction is one or less, and the number of regions of the resistance line along a radial direction is one or less.

A force sensor comprising a beam having a longitudinal center axis and a neutral axis that extends along a beam surface parallel to the center axis. A first half-bridge includes tension resistors. A second half-bridge includes tension resistors. A third half-bridge includes compression resistors. A fourth half-bridge includes compression resistors. The half-bridges are arranged on the beam surface such that redundant measurements of orthogonal components of a force imparted to the beam can be made using four different combinations of three of the half-bridges. The redundant measurements can be used to identify a malfunction of one or more of the resistors.

The present disclosure relates to a cable system for cable condition monitoring, a use of such a cable system, a method for manufacturing such a cable system, a method for operating such a cable system and a computer program element for operating such a cable system. The cable system includes a first adapter unit, a first sleeve unit and a cable including at least a first end portion. The first adapter unit is connectable to an energy storage system and the cable is configured for transferring electric power to the first adapter unit. The first sleeve unit is arranged between the first adapter unit and the first end portion of the cable and configured for providing protection therebetween. The first sleeve unit includes a first sensor unit configured for generating data based on strain exerted on the first sleeve unit. The first sensor unit includes a first flexible electronic element extending at least partially to the first end portion of the cable.

A detector is a detector that detects fastening axial force applied by a fastening unit in an axial direction. The detector includes a strain element that has a through hole through which a bolt portion that the fastening unit has is inserted, and a strain sensing sensor that senses strain of the strain element. The strain element has a block-like form and has a planar portion following the axial direction on a side face thereof. The strain sensing sensor is provided on the planar portion.

The present invention relates to a fiber composite for a strain sensor and a method for producing the same. The composite includes a stretchable fiber; a conductive elastic polymer layer coated on the stretchable fiber; polymer beads disposed on the stretchable fiber or on the elastic polymer layer; and a conductive elastic polymer layer covering the polymer beads. The fiber composite is durable and stable. Therefore, a strain sensor produced using the fiber composite exhibits excellent durability, recoverability, repeatability and sensitivity, and a fast sensing speed.

A force sensor includes a substrate, sensing elements, a flex cable, and a seal assembly. The substrate has proximal and distal surfaces, and a cavity defined therein. The sensing elements are disposed within the cavity of the substrate and the pin block assembly is electrically coupled to the sensing elements. The seal assembly includes at least one gasket, a retainer plate, and a seal restraint. The seal assembly is held under compressive load to seal the cavity of the substrate and protect the sensing element disposed therein.

An electronic apparatus includes a base substrate including a planar part and a folding part, which is connected to a side of the planar part and is foldable along a folding axis extending in a predetermined direction, where the base substrate includes a front surface including an active region and a peripheral region adjacent to the active region, when viewed from a plan view in a thickness thereof, a plurality of pixels disposed on the front surface and in the active region, an encapsulation layer covering the pixels, a strain-sensing pattern disposed on the front surface, in the active region, and on the folding part, and a plurality of pixel pads disposed on the peripheral region. The strain-sensing pattern is disposed between the base substrate and the encapsulation layer.

A strain gauge includes a substrate made from resin and having flexibility, a resistor formed on one surface of the substrate, and an insulating resin layer covering the resistor, wherein the insulating resin layer is a thermoplastic polyimide layer.

Aspects of the subject technology relate to a sensor for a downhole tool. The downhole tool can include a collar and a sensor. The sensor can be secured to the collar for measuring one or more operational characteristics of the downhole tool during operation of the downhole tool. The sensor can include a substrate. The sensor can also include a plurality of strain gauges disposed on the substrate. The plurality of strain gauges can be configured to measure axial strains and torsional strains on the collar for measuring the one or more operational characteristics of the downhole tool.

An electronic device has a keyboard with an internal membrane. The membrane has a set of strain gauges configured to respond to a key press, such as when a collapsible dome collapses into contact with the membrane. The strain gauges are connected in a half Wheatstone bridge configuration and are positioned on the membrane in order to limit effects of temperature and subtle flexure of the membrane. The strain gauges are also configured to magnify detection of a resistance differential when a keycap is pressed with sufficient force.