Abstract: A torque sensor including an annular deformation body disposed so as to surround a circumference of a rotation axis, an exertion support body, a fixing support body, and a detection circuit. The annular deformation body has four coupling parts, and four detection parts positioned between two coupling parts which are adjacent in the circumferential direction of the annular deformation body, the detection parts undergoing elastic deformation by exertion of torque. The detection parts each are formed in a convex shape on one side in a direction along the rotation axis and are formed in a concave shape on the other side in a direction along the rotation axis. The detection circuit outputs electric signals on the basis of elastic deformation undergone to the detection part of the annular deformation body.

Abstract: The present invention relates to a shear force measuring device for measuring a shear force of a human body relative to a seat, such as a chair, wheelchair, aircraft seat, the device including: a frame for providing a mechanical, substantially slide-free connection to the seat, a force sensor arranged on the frame, shear force receiving means for receiving the shear force which are coupled to the sensor. The shear force receiving means are arranged and configured such that shear force exerted on the shear force receiving means is transferable to the sensor so that the shear force is detectable by the sensor. The present invention further relates to a wheelchair or seat, a method and a computer-readable carrier including computer program means.

Abstract: A monitoring system is disclosed herein that is configured to utilize a distributed sensing system to monitor both a cable and cable accessories included within a cable circuit. In various embodiments, the monitoring system may include a distributed sensing system and one or more cable accessory wrap assemblies. The distributed sensing system may include a distributed sensing fiber following (or integrated into) the cable and connected to a cable accessory wrap assembly for each of the one or more cable accessories in-line with cable. In various embodiments, each cable accessory wrap assembly may comprise a cable wrap embedded with a distributed sensing fiber. The distributing sensing fiber of a cable accessory wrap assembly may be configured to provide measurements to distributed sensing system indicating that an anomaly event occurred at a given cable accessory.

Abstract: A laminated microfluidic device is described that includes an internal microchannel formed from laminating individual layers of the laminated microfluidic device to each other. The laminated microfluidic device also includes a first port, a second port, a third port, and a fourth port each fluidically coupled to the internal microchannel. The laminated microfluidic device permits flow of sample into the laminated microfluidic device through the first port. The laminated microfluidic device fluidically couples to an external pressure source through the second port. The laminated microfluidic device permits the flow of the sample to a first component fluidically coupled to the third port and to a second component fluidically coupled to the fourth port depending on pressure within the internal microchannel of the laminated microfluidic device.

Abstract: A capacitive sensor for characterizing force or torque includes a first plurality of non-patterned conductive regions and a first plurality of patterned conductive regions, and a second plurality of non-patterned conductive regions and a second plurality of patterned conductive regions. The first and second pluralities of non-patterned conductive regions are facing and the first and second pluralities of patterned conductive regions are facing.

Abstract: Techniques for measuring a position of a build platform in an additive fabrication device are provided. Such techniques may include detecting the onset and/or dissipation of force applied to a build platform as it moves from being in contact with, to being out of contact with, a container. In some embodiments, the techniques described herein may be applied in a stereolithographic additive fabrication device. According to some embodiments, measurement of forces applied to a build platform may be used to provide for reliable and consistent measurements of the height of the build platform relative to a container by measuring such forces at various positions of the build platform and analyzing the pattern of the forces with distance from the container.

Abstract: A temperature-controlled electronic apparatus, comprises: a circuit board; a plurality of electronic components, mounted on the circuit board in an arrangement to form at least one electronic circuit; a temperature sensor, configured to measure a temperature of the at least one electronic circuit; and a heat-generating component, configured to be controlled by a temperature control circuit, the temperature control circuit being configured to control an amount of heat generated by the heat-generating component in response to the temperature measured by the temperature sensor. The plurality of electronic components are arranged on the circuit board to lie on one of one or more paths, each path of the one or more paths being defined by a respective circle having a radius.

Abstract: A sealing pressing head for a conventional triaxial test of cuboid rocks with pre-existing fissures, and a test method, the sealing pressing head comprising an upper pressing head (14) and a lower pressing head (15); the upper pressing head (14) and the lower pressing head (15) are respectively used for being provided at upper and lower ends of a test sample (10); the upper pressing head (14) comprises a circular portion (2) and a square portion (1) which are provided in sequence from top to bottom; and the lower pressing head (15) comprises a square portion (1), a circular portion (2) and a threaded portion (3) which are provided in sequence from top to bottom.

Abstract: An experimental system for simulating the effect of a fault stick-slip displacement on a tunnel engineering includes a model box system and a stick-slip loading system. The model box system is configured to simulate an interaction between two walls of a fault. The stick-slip loading system includes a first loading assembly, a second loading assembly and a bearing assembly. The first loading assembly includes a first loading device, and a first sample frame configured to place a main loading rock mass sample. The bearing assembly is arranged on two sides of the first sample frame. Sub-loading rock mass samples borne by the bearing assembly are configured to abut against the main loading rock mass sample under the action of the second loading assembly. A method for simulating the effect of a fault stick-slip displacement on a tunnel engineering based on the above system is further provided.

Abstract: A fabric cover may be configured to mechanically couple to and cover part of a frame and the fabric cover may have a plurality of layers including a first non-conductive fabric layer, a second non-conductive fabric layer, a piezoresistive core layer between the first non-conductive fabric layer and the second fabric non-conductive layer, and a first conductive layer comprising a plurality of first conductive fiber traces and located between the first non-conductive fabric layer and the second non-conductive fabric layer. A localized impedance of the piezoresistive core layer indicates a mechanical force applied to the fabric cover proximate to such localized impedance.

Abstract: A force sensor may comprise a sense die comprising a top part and a bottom part. Generally, the top part may comprise a first surface and a second surface, and the bottom part may comprise a first surface for direct contact with a substrate. Typically, the bottom part may be formed by removing a portion of the material of the sense die around the edges of a first face of the sense die. Typically, adhesive may replace the portion of the sense die material removed from the edges of the first face of the sense die. Thus, the adhesive may secure the first surface of the bottom part of the sense die directly to the substrate without serving as an interface between the bottom part of the sense die and the substrate.

Abstract: A sensor module includes a sensor, a first substrate on which the sensor is mounted, a second substrate coupled to an external connector, conductive members that couple the first substrate and the second substrate, an accommodator that accommodates the first substrate, the second substrate, and a conductive member therein, a lid that closes an opening of the accommodator, a first elastic member in contact with a first main surface of the first substrate and the accommodator, and a second elastic member in contact with a second main surface of the first substrate and the lid. A resonance frequency f1 of the sensor, a resonance frequency f2 of the conductive member, a resonance frequency f3 of the first elastic member, and a resonance frequency f4 of the second elastic member satisfy f2<f3<f1 and f2<f4?f1.

Abstract: A force sensor is suitable for an electrohydraulic hitch control system of an agricultural tractor. The force sensor has an outer cylindrical part with a bore and a measuring rod fixed on one side in the bore. A central section of the cylindrical part is provided as force introduction section. Two outer sections of the cylinder part are removed equally far axially from the center of the force introduction section and are provided as abutment sections. The measuring rod is clamped in an area of the force introduction section.

Abstract: A method for testing a structure using laser ultrasound includes steps of: (1) directing positioning light on a surface of the structure; (2) determining a spatial location and a spatial orientation of the surface from an evaluation of the positioning light reflected back from the surface; (3) directing pump light onto the surface to generate ultrasonic waves in the structure; (4) selectively locating a probe-light focal point of probe light on the surface, based on the spatial location determined for the surface; (5) selectively angularly orienting the probe light normal to the surface, based on the spatial orientation determined for the surface; and (6) directing the probe light onto the surface to detect a response to the ultrasonic waves.

Abstract: A downhole fluid analysis device includes a piezoelectric helm resonator, an optical sensor, and an electromagnetic spectroscopy sensor. The piezoelectric helm resonator includes a strain bar and a pair of electrodes coupled to opposite sides of the strain bar. The piezoelectric helm resonator further includes a pair of tines, in which a first tine of the pair of tines is coupled to opposite ends of the strain bar, the pair of tines each having an arc, and such that strain across a transverse face of the strain bar generates a resonance response from the pair of tines. The optical sensor is positioned centrally with respect to the piezoelectric helm resonator, and the spectroscopy sensor is positioned symmetrically with respect to the piezoelectric helm resonator in at least on direction.

Abstract: A temperature measurement device having a thermopile temperature sensor and a proximity sensor, a mobile temperature measurement device, and a method for determining a corrected temperature with a temperature measurement device are described. In an implementation, a temperature measurement device includes a semiconductor device; a thermopile temperature sensor disposed on the semiconductor device, where the thermopile temperature sensor is configured to receive radiation from an object; a proximity sensor disposed on the semiconductor device, the proximity sensor configured to detect a distance between the thermopile temperature sensor and the object; and a controller configured determine a corrected temperature measurement using at least an indication of received radiation and an indication of distance between the thermopile temperature sensor and the object.

Abstract: A tire-mounted sensor is to be mounted to an inner wall surface of a tire, and includes a sensor device having a vibration detection element to detect vibration applied to the tire, a circuit board having the vibration detection element thereon, an antenna attached to the circuit board, and an accommodation structure accommodating the vibration detection element, the circuit board, and the antenna. At least a part of the accommodation structure is made of a flexible material to attenuate the vibration applied to the tire. The tire-mounted sensor further includes a vibration transmission member configured to transmit the vibration applied to the tire to the vibration detection element.

Abstract: A wetting test apparatus for a gas sensor includes: a pipe having a flow path therein; a blower for allowing a gas to flow through the flow path; a water supplier for supplying moisture to the flow path; at least one gas sensor for detecting at least one component of the gas flowing through the flow path; and a pressure variation generator for generating variations in a pressure of the gas flowing through the flow path by changing an effective cross-sectional area of the flow path.

Abstract: A test apparatus for simulating a seismic dynamic response of an underground cavern includes a loading frame, an overlying model and an underlying model of the underground cavern, a static loading device, a dynamic loading device and a measuring device. A vertical load and a horizontal load are separately applied by the static loading device to the overlying model to simulate real vertical and horizontal in-situ stresses of the in-situ underground cavern. A seismic dynamic load is applied by the dynamic loading device to the underlying model, and then acts on the overlying model to simulate a real seismic ground motion on the in-situ underground cavern. In this way, the present invention satisfies simulation requirements for the seismic dynamic response of the underground cavern to implement a high-fidelity simulation on the underground cavern through unified loading of the in-situ stress static load and the seismic dynamic load.

Abstract: An electronic sensor includes a housing having a distal end configured to be exposed to a flow of a fluid media opposite a proximal end configured not to be exposed to the fluid media. A chamber and connected passageway are disposed within the housing. The passageway is connected at one end to the chamber and connected at another end to an opening disposed at the distal end of the housing. The opening is configured to be in fluidic communication with the fluid media. A pressure sensor and a first temperature sensor are disposed within the chamber. A viscous gel is disposed within the chamber, the viscous gel separating on a first side both the pressure sensor and the first temperature sensor apart from the passageway on a second side of the viscous gel. The chamber can include a non-smooth surface to increase viscous gel adhesion.