Entries |
Document | Title | Date |
20080229841 | Strain Sensor - A fixing member is composed of an upper washer and a lower washer; and a sensor substrate is sandwiched and held with these upper and lower washers. A strain-detecting element is disposed on the sensor substrate. A strain sensor as configured above is fixed onto a measurement target via the fixing member. Accordingly, the strain sensor does not generate an output signal when no external force is applied, demonstrating stable characteristics. | 09-25-2008 |
20090007685 | Piezoresistive strain gauge using doped polymeric fluid - The present invention relates to a strain gauge and methods of making such wherein the gauge contains a doped polymeric fluid suitable for measuring elongations of more than 10%. | 01-08-2009 |
20090038403 | SENSOR ASSEMBLY - A sensor assembly includes a elongate article and a plurality of elongate piezoelectric elements provided to the elongate article. Each of the piezoelectric elements is configured so that when a load is applied in a direction perpendicular to a surface of the piezoelectric element, a short axis direction of the piezoelectric element becomes a sensitivity direction in which a voltage is generated, and a major axis direction becomes a non-sensitivity direction in which a voltage is not generated. | 02-12-2009 |
20090145238 | STRAIN GAUGE - A strain gauge measures elongation and compression at a surface of a component. The strain gauge comprise a housing having a fixation configured to attach the strain gauge to the surface to be measured, a connector for contacting a measuring cable, at least two support surfaces at the housing for securely bearing on the surface to be measured. At least one of the support surfaces is provided with a transduction element and with a measuring element for measuring shearing forces. The measuring element is connected by means of an internally disposed cable to the connector and to a module that comprises that at least one support surface provided with the measuring element pre-assembled together with the transduction element. | 06-11-2009 |
20090241680 | STRESS SENSOR AND ELECTRONIC DEVICE WITH SAME - The present invention relates to a stress sensor to be combined with an assembled object of an input unit of an electronic device. The stress sensor includes a circuit substrate and a pointing operation element disposed on a surface of the circuit substrate. The circuit substrate is combined with an assembled object of an input unit by a connecting mechanism such that the circuit substrate is directly attached onto a surface of the assembled object. As a result, the overall height of the stress sensor and the assembled object is reduced in comparison with the prior art. | 10-01-2009 |
20090249884 | ELECTRICALLY MEASURING EXPANSIONS ON CYLINDRICAL BODIES - Positive and negative expansions on the covering surface of essentially cylindrical bodies are measured by mobile measuring pincers which comprise a guiding profile for two adjacently adjustable sliders which are used to clamp the body in a radial direction and to press at least one expansive measuring element on the covering surface by forming a frictional connection. Currently, a first slider, which can be displaced in the direction of clamping on the guide profile by a spindle, preferably comprising integrated torque adjustment, is offset with a centering element on the cylindrical head. Then, a second slider, which can be displaced on the guide profile is arranged with a centering element on the cylindrical body and engaged. The centering elements are clamped on the body between the sliders by pulling the spindle. The measuring element(s) are is/are pressed onto the covering surface of the body in order to form a positive connection. The sliders comprise a guide element for the centering elements of the cylindrical head in the head region thereof, which can be displaced counter to the resistance of at least one return spring in the direction of clamping (S). The centering elements have, preferably, essentially angular centre plates which can be exchanged. | 10-08-2009 |
20090293631 | Flexural deformation sensing device and a user interface using the same - A sensing device is provided for measuring flexural deformations of a surface. Such a sensing device may be used as a user interface in portable electronic devices. The sensing device comprises at least one cell. The cell comprises a first electrode, a central electrode, a second electrode, a first piezoelectric sensing layer placed between the first electrode and the central electrode, a second piezoelectric sensing layer placed between the central electrode and the second electrode, and a circuit connected to the first, second and the central electrodes. The circuit is configured to measure a first electrical signal between the first electrode and the central electrode, and a second electrical signal between the second electrode and the central electrode. At least one of the first electrical signal and the second electrical signal is responsive to an external stress applied on the sensing device. | 12-03-2009 |
20090301215 | DISPLACEMENT SENSOR - A displacement, strain, and/or force sensor assembly ( | 12-10-2009 |
20100050779 | CARBON NANOTUBE-BASED LOAD CELLS - A robust, stand-alone load cell comprises a block of aligned carbon nanotubes with parallel electrodes on opposing sides of the block and an electrical circuit connected between the electrodes for measuring the electrical resistance of the block. The nanotubes are preferably aligned perpendicular to the electrodes. Carbon nanotube-based load cells may be incorporated into a wafer asssembly for characterizing semiconductor processing equipment. Such a wafer assembly includes two parallel wafers with a plurality of carbon nanotube load cells positioned between and attached to both wafers. The load cells are independently electrically connected to a device which monitors and records the resistivity of the load cell. According to further aspects of the invention, each of the load cell's parallel electrodes may be comprised of many small electrodes, where each small electrode on one side of the block has a corresponding small electrode on the opposing side of the block; corresponding pairs of small electrodes are connected in series to form a chain; an electrical circuit, connected to both ends of the chain of opposing pairs of electrodes, is used to measure the electrical resistance of the chain. | 03-04-2010 |
20100095780 | MICRO/NANO-MECHANICAL TEST SYSTEM EMPLOYING TENSILE TEST HOLDER WITH PUSH-TO-PULL TRANSFORMER - A micromachined or microelectromechanical system (MEMS) based push-to-pull mechanical transformer for tensile testing of micro-to-nanometer scale material samples including a first structure and a second structure. The second structure is coupled to the first structure by at least one flexible element that enables the second structure to be moveable relative to the first structure, wherein the second structure is disposed relative to the first structure so as to form a pulling gap between the first and second structures such that when an external pushing force is applied to and pushes the second structure in a tensile extension direction a width of the pulling gap increases so as to apply a tensile force to a test sample mounted across the pulling gap between a first sample mounting area on the first structure and a second sample mounting area on the second structure. | 04-22-2010 |
20100132476 | STRAIN SENSOR - A strain sensor ( | 06-03-2010 |
20100162823 | MEMS SENSOR AND MEMS SENSOR MANUFACTURE METHOD - Trench separating mass body and support is defined in support substrate, and flexible beam cross is defined in semiconductor layer, in SOI. The semiconductor layer and intermediate insulator of the SOI are etched in crossed region of the flexible beam cross and in a looped region above the support body. Connector layer is buried in the etched recesses. The semiconductor layer is patterned into the flexible beam cross above the mass body. The trench is etched in the support substrate exposing the intermediate insulator, which is then etched to form a gap between the mass body and flexible beam cross. The connector layer in the crossed region couples the mass body and flexible beam cross, and the connector layer outside the flexible beam cross couples the flexible beam cross and support body. Stopper is formed by extending the connector layer, or leaving the semiconductor layer, above the mass body corners. | 07-01-2010 |
20100307255 | Physical quantity sensor device and method of manufacturing the same - A physical quantity sensor device ( | 12-09-2010 |
20110023619 | THIN FILM CERAMIC THERMOCOUPLES - A thin film ceramic thermocouple ( | 02-03-2011 |
20110259112 | Mechanical-Quantity Measuring Device - A mechanical-quantity measuring device capable of measuring a strain component in a specific direction with high precision is provided. | 10-27-2011 |
20110283804 | MEASURING DEVICE INCLUDING DETECTION OF DEFORMATIONS - A measuring device is described which has a metal body deformable in accordance with a value to be measured. A sensor element having a metal carrier and ohmic resistors formed thereon in metal thin-film technique is connected to the metal body by welding and generates a signal adapted to be electrically evaluated which corresponds to the deformation of the metal body. The weld for connecting the metal body and the sensor element completely encloses the metal carrier at its circumference. The metal body has, at the welded connection with the metal carrier, a material thickness t which is completely penetrated by the weld. The value to be measured by the measuring device comprises force, pressure, temperature, torque or combinations thereof. | 11-24-2011 |
20120006123 | INERTIAL SENSOR HAVING AN OSCILLATING ROTATING DISK - The present invention relates to an inertial rotary movement microsensor for detecting a rotational movement around what is referred to as an axis of rotation (X), provided with a part that is movable relative to a fixed part, the movable part comprising an excitation mass configured to undergo an oscillating movement in an excitation direction (Z) by an exciter so as to generate a Coriolis force induced by the rotational movement, a detection mass kinematically connected to the excitation mass by a linkage configured to transmit the Coriolis force at least partly without transmitting the oscillating movement around the excitation axis at least partly, a detector configured to measure the Coriolis force transmitted to the detection mass, characterized in that the detector is provided with at least one strain gauge suspended between the detection mass and an anchoring part integral with the fixed part. | 01-12-2012 |
20120017695 | COMPLEX BALANCING OF A ROTATING MECHANICAL PART - Mechanical stresses of a tire are dynamically balanced using piezoelectric probes adjacent the tire. The piezoelectric probes are hypersensitive to electromagnetic fields and are configured to identify electronic information corresponding to mechanical stresses in the tire based on receiving a flow of electrons in an ambient space, and to transmit the electronic information in reverse phase to the tire to reduce vibrations of the tire. | 01-26-2012 |
20120036939 | STRUCTURAL ELEMENT FOR AN ORTHOPEDIC DEVICE - The invention relates to a structural element for an orthopedic device, comprising at least one sensor ( | 02-16-2012 |
20120266685 | APPARATUS AND METHOD FOR NANOCOMPOSITE SENSORS - A sensing material for use in a sensor is disclosed. Such a sensing material includes a polymer base and a piezoresistive nanocomposite embedded into the polymer base in a continuous pattern. The nanocomposite comprises a polymer matrix and a plurality of conductive nanofillers suspended in the matrix. The conductive nanofillers may be one or a combination of nanotubes, nanowires, particles and flakes. The density of the plurality of nanofillers is such that the nanocomposite exhibits conductivity suitable for electronic and sensor applications. | 10-25-2012 |
20120272741 | COAXIAL CABLE BRAGG GRATING SENSOR - A coaxial cable sensor device with periodic impedance discontinuities along the length of its cable. The cable comprises an inner conductor, insulating material disposed around the length of the inner conductor, and an outer conductor disposed around the insulating material. The periodic impedance discontinuities are created by physical deformations or material alterations to at least one of the inner conductor, the outer conductor, and the insulating material. The sensor device may be used to measure temperature, pressure, strain, and acoustic waves in building structures, and is well suited for down-hole or underwater applications. | 11-01-2012 |
20120297888 | Wireless Passive Radio-Frequency Strain And Displacement Sensors - Wireless strain and displacement sensors wirelessly monitor structural health and integrity, and are made by printing inductor-interdigital capacitor sensing circuits on a variety of substrates, including ceramic substrates, with thermally processable conductive inks. Sensors of the invention can be employed to detect strain and displacement of civil structures, such as bridges and buildings. The sensors include sensing elements that are mounted or printed on stiff, inflexible substrates, which prevent the sensing elements from bending, stretching, or otherwise warping when the sensor is strained. An interlayer between the sensing elements allows the sensing elements to move with respect to each other during application of strain. Thus, strain causes the sensing elements to move but not to deform, causing changes in sensor resonance that can be detected through wireless radio-frequency interrogation. Because the sensing elements do not change shape when under strain, the sensor can undergo millions of measurement cycles before breaking. | 11-29-2012 |
20130031987 | CARBON NANOTUBES BASED SENSING ELEMENTS AND SYSTEM FOR MONITORING AND MAPPING FORCE, STRAIN AND STRESS - The present disclosure relates to an element for sensing strain, stress or force. The sensing element comprises a substrate, a pair of electrodes on the substrate, and a network of carbon nanotubes for sensing the strain, stress or force within a structure. The network of carbon nanotubes defines at least in part an electrical path between the electrodes of the pair, and the electrical path has a resistance which is altered by the sensed strain, stress or force. Combining a plurality of sensing elements coupled to a common substrate forms a sensing system. | 02-07-2013 |
20130086990 | PRESSURE SENSOR HAVING A CYLINDRICAL PRESSURE MEASURING CELL - A pressure measuring transducer comprising: a pressure measuring cell; a measuring cell housing, wherein the measuring cell housing has an annular axial abutment surface, which surrounds an opening; a sealing ring; and a ring of angular cross section for positioning the pressure measuring cell and the sealing ring in the measuring cell chamber. The sealing ring lies on the axial abutment surface, the pressure measuring cell lies with its frontal end face on the sealing ring, the pressure measuring cell is clamped axially against the sealing ring, the ring of angular cross section is arranged in an annular gap between the pressure measuring cell and a measuring cell chamber wall. The ring of angular cross section includes at least a first component of a form-retaining material and at least a second component of an elastic material, wherein the at least one form-retaining component forms the radial shoulder and extends in the axial direction into the annular gap, and the second component is connected with the first component and extends in the annular gap at least sectionally radially between the lateral surface of the pressure measuring cell and the wall of the measuring cell chamber. | 04-11-2013 |
20130104665 | STRAIN SENSORS, METHODS OF MAKING SAME, AND APPLICATIONS OF SAME | 05-02-2013 |
20130118267 | Strain Sensor - A strain sensor includes a flexible substrate, a CNT film made of a plurality of CNT fibers aligned in an orientation direction, a pair of electrodes, and a protective coat. The electrodes are formed at the opposite ends of the CNT film in a perpendicular direction to the orientation direction of the CNT fibers. The protective coat protecting the CNT film is made of a resin, a water-based emulsion, or an oil-based emulsion. The protective coat is placed in contact with at least part of the CTN fibers on the surface of the CNT film. The strain sensor including the protective coat is able to prevent damage/breakage of the CNT film and to prevent foreign matters from entering into gaps between CNT fibers, thus improving durability in maintaining adequate sensing functionality. | 05-16-2013 |
20130133433 | SURFACE STRESS SENSOR - Deflection of a free end of one plate-like member, that is caused by uniform stress, is transmitted to the other plate-like member by moving a free end of the other plate-like member. According to this configuration, the uniform stress applied to the one plate-like member is converted into stress induced by a point force in the other plate-like member, and then, the induced stress is concentrated on a fixed end side narrow portion in which a piezoresistor is provided. Thus, a novel structure for a piezoresistive surface stress sensor having high sensitivity to uniform stress applied to the surface of the sensor is provided. | 05-30-2013 |
20130145856 | PRESSURE-SENSITIVE SENSOR, AND GRIP APPARATUS AND ROBOT MANIPULATOR EQUIPPED WITH THE SAME - A pressure-sensitive conductive rubber for reference is provided inside a housing in such a state that preload is imposed thereon. A pressure-sensitive conductive rubber for detection is also provided inside the housing in such a state that preload is imposed thereon and an external load acts thereon. A load detecting circuit applies voltage to the pressure-sensitive conductive rubbers to determine the external load based on a difference between a detected value corresponding to electric current flowing through the pressure-sensitive conductive rubber for reference and a detected value corresponding to electric current flowing through the pressure-sensitive conductive rubber for detection. | 06-13-2013 |
20130152695 | METHODS AND DEVICES FOR EXTRACTING OFF-TRACK MOTION USING MICROACTUATORS - In certain embodiments, an apparatus includes a first piezoelectric (PZT) element poled in the same direction as a second PZT element. The first and second PZT elements are configured to be driven while simultaneously sensing motion. The apparatus further includes a circuit configured to add outputs of the first and second PZT elements, extract the sensed motion, and detect off-track motion from the extracted sensed motion. | 06-20-2013 |
20130160562 | PRESSURE SENSOR WITH INTERCONNECTOR HAVING A COMPLIANT PIN ASSEMBLY - A pin and circuit board assembly includes at least three pins ( | 06-27-2013 |
20130213140 | FLEXIBLE ELECTRICALLY CONDUCTIVE NANOTUBE SENSOR FOR ELASTOMERIC DEVICES - A flexible substrate has a major surface and a sensor attached to and aligned with the major surface of the substrate. The sensor may have an elastic body containing conductive nanotubes homogeneously distributed therein to form a conductive path and at least two electrodes in electrical connection with the conductive path. Balloons and flexible elements used in medical procedures are particularly useful. | 08-22-2013 |
20130283922 | ELECTRO-ACTIVE MICROELECTROMECHANICAL DEVICE AND CORRESPONDING DETECTION PROCESS - An electroactive microelectromechanical device of the Artificial Hair Cell type includes a moving cilium structure having a substrate and a cantilever, partly or entirely in piezoelectric material, subject to bending or deformation following the action of a force and/or an applied voltage. The cantilever includes a multilayer inducing a stress-driven geometry in which a portion of the cantilever lies outside of a plane defined by the substrate. According to the invention, the cantilever is associated to a piezoresistive element, in particular of piezoresistive material configured to measure the bending or deformation of the cantilever. | 10-31-2013 |
20130305833 | Method for Measuring Fatigue - A method for measuring fatigue on a metal or metal alloy structural part, which includes mounting a fatigue gage on a surface of the part, the fatigue gage being the same material as the part, applying electrical power on the gage and measuring the resistance of the fatigue gage, inspecting the fatigue gage at various time intervals by applying electric power on the gage and measuring the resistance of the fatigue gage; and analyzing the change of resistance of the fatigue gage at the various time intervals to determine fatigue on the part. | 11-21-2013 |
20130312534 | DEVICE AND METHOD FOR TESTING PULLING FORCE - An exemplary embodiment of a testing device for testing a pulling force includes a shell having a test platform, a load sensor mechanism, a control system, a drive and transmission mechanism and a material clamping mechanism. Two portions of a test object are clasped by the load sensor mechanism and the clamp. When the load sensor mechanism is driven to move further away from the clamp via the drive and transmission mechanism, a pulling force perpendicular to the test platform is generated between the two portions of the test object. The load sensor mechanism detects the pulling force and feeds back the detection to the control system. | 11-28-2013 |
20140013854 | APPARATUS AND METHOD FOR IN SITU TESTING OF MICROSCALE AND NANOSCALE SAMPLES - According to example embodiments of the invention, a microscale testing stage comprises a frame having first and second opposing ends and first and second side beams, at least one deformable force sensor beam, a first longitudinal beam having a free end, a second longitudinal beam having a facing free end, a support structure, and a pair of slots disposed at each of the free ends. In certain embodiments, a layer of a conductive material defines first and second conductive paths and an open circuit that can be closed by the specimen across the gap. In other embodiments, the stage is formed of a high melting temperature material. | 01-16-2014 |
20140026670 | METHOD OF COMPENSATING FOR EFFECTS OF MECHANICAL STRESSES IN A MICROCIRCUIT - A method for manufacturing an integrated circuit includes forming in a substrate a measuring circuit sensitive to mechanical stresses and configured to supply a measurement signal representative of mechanical stresses exerted on the measuring circuit. The measuring circuit is positioned such that the measurement signal is also representative of mechanical stresses exerted on a functional circuit of the integrated circuit. A method of using the integrated circuit includes determining from the measurement signal the value of a parameter of the functional circuit predicted to mitigate an impact of the variation in mechanical stresses on the operation of the functional circuit, and supplying the functional circuit with the determined value of the parameter. | 01-30-2014 |
20140047925 | Displacement Sensor, In Particular For Use In A Subsea Device - A displacement sensor for sensing the displacement of a movable component of a device is provided. A flexible element of the displacement sensor includes a mounting portion mounted to the device and a coupling portion spaced apart from the mounting portion. A displacement conversion mechanism is coupled to the movable component and is further coupled to the coupling portion of the flexible element. The displacement conversion mechanism is configured to convert a larger displacement of the movable component into a smaller displacement of the coupling portion of the flexible element. The flexible element is arranged such that a displacement at the coupling portion causes the flexible element to bend. | 02-20-2014 |
20140144245 | PLANAR HIGH VOLTAGE TRANSFORMER - A curved surface shaped membrane pressure sensor for a moving member and the method for manufacturing the same, the sensor comprising an elastic curved plate and a subtype grid membrane switch formed on the curved plate, wherein the membrane switch is coupled to a cutting board shell of the moving member on one side opposed to the curved plate, and the subtype grid membrane switch is used for sensing the presence of pressure on the curved plate. The curved surface shaped membrane pressure sensor according to the present invention can not only meet the requirements on appearance of the moving member, but also effectively sense the touching to prevent injury on the object being detected, and additionally can effectively achieving the effects of fireproofing and waterproofing. | 05-29-2014 |
20140157906 | CIRCULAR LOAD CELL STRAIN SENSOR CONFIGURATION - A load cell extending in an axial direction having an outer surface includes a groove in the outer surface having a first flat wall, and a second flat wall; and a principal strain sensor positioned on the first flat wall to measure tension and compression in the axial direction. | 06-12-2014 |
20140174190 | MANUFACTURING STRAIN SENSITIVE SENSORS AND/OR STRAIN RESISTANT CONDUITS FROM A METAL AND CARBON MATRIX - Implementations and techniques for manufacturing strain sensitive sensors and/or strain resistant conduits from a metal and carbon matrix are generally disclosed. | 06-26-2014 |
20140260653 | COMPOSITE MATERIAL USED AS A STRAIN GAUGE - In one general aspect, an apparatus comprises a material including a non-layered mixture of an elastomeric polymer with a plurality of voids; and a plurality of conductive fillers disposed in the elastomeric polymer. The apparatus may produce an electrical response to deformation and, thus, function as a strain gauge. The conductive fillers may include conductive nanoparticles and/or conductive stabilizers. In another general aspect, a method of measuring compression strain includes detecting, along a first axis, an electrical response generated in response to an impact to a uniform composite material that includes conductive fillers and voids disposed throughout an elastomeric polymer, and determining a deformation of the impact based on the electrical response. The impact may be along a second axis different from the first axis. | 09-18-2014 |
20140318261 | INTERMEDIATE CONNECTOR - An unshielded strain gage sensor cable that is tightly sealed within an injection mold to prevent electromagnetic interference from interfering with the sensor signal. The use of the unshielded cable significantly reduces the cost and allows for quick installation and a mobility that does not exist with shielded cables. | 10-30-2014 |
20140326071 | METHOD FOR DETECTING CELLS WITH ELASTIC CELL MEMBRANES - The subject matter disclosed in this specification pertains to a method for detecting cells with elastic cell membranes. A plurality of cells are fixed to an impedimetric transducer and osmotic stress is applied. Those cells with elastic membranes, including cancer cells, undergo a volume change which is detected by the impedimetric transducer. | 11-06-2014 |
20140326072 | OCCUPANCY SENSOR - Embodiments of the present disclosure relate to methods, devices, and systems for determining occupancy of a user. One method to determine occupancy of a user includes sensing a change in resistance of a sensor element of an occupancy sensor, correlating the change in resistance to a force transmitted to the occupancy sensor, and determining an occupancy status of a user based on the force transmitted. | 11-06-2014 |
20140352447 | DOUBLE-SIDE-COATED SURFACE STRESS SENSOR - A double-side-coated surface stress sensor includes a sensing membrane structure portion where at least two ends opposite each other are fixed on a mounting portion; a receptor layer that coats both surfaces of the sensing membrane structure portion; and an element detecting a stress, which is provided in the vicinity of at least one of the fixed two ends, opposite each other, of the sensing membrane structure portion or at least one of the fixed two ends, opposite each other, of the mounting portion, in which in a detection output is obtained from the element based on the stress which is applied onto the receptor layer coating the both surfaces of the sensing membrane structure portion. Accordingly, it is possible to provide a double-side-coated surface stress sensor which coats both surfaces of the sensing membrane structure portion by the receptor layer, thereby obtaining a sufficiently large detection output. | 12-04-2014 |
20140352448 | ALL ELECTRIC PIEZOELECTRIC FINGER SENSOR (PEFS) FOR SOFT MATERIAL STIFFNESS MEASUREMENT - A PEFS (Piezoelectric Finger Sensor) acts as an “electronic finger” capable of accurately and non-destructively measuring both the Young's compression modulus and shear modulus of tissues with gentle touches to the surface. The PEFS measures both the Young's compression modulus and shear modulus variations in tissue generating a less than one-millimeter spatial resolution up to a depth of several centimeters. This offers great potential for in-vivo early detection of diseases. A portable hand-held device is also disclosed. The PEF offers superior sensitivity. | 12-04-2014 |
20150007665 | Thermal Imaging Sensors - A sensor device comprises an array of spaced apart sensor elements disposed in a pattern on a substrate. Each sensor element is connected electrically so that a physical variable measured by each sensor element independently can be recorded and/or displayed by an external instrument. The sensing device may be a temperature sensing device, in which case the sensor elements are temperature sensing elements such as negative temperature coefficient (NTC) thermistors. Alternatively the sensing device may be a strain or pressure sensing device, or an optical imaging device, in which case the sensor elements include piezoresistors or photoresistors. The sensor elements may be connected in a common source or write all—read one configuration, in a common output or write one—read all configuration, or in an array comprising X rows and Y columns, in a write X—read Y configuration, | 01-08-2015 |
20150040677 | CIRCUITS, METHODS, AND COMPUTER PROGRAMS TO DETECT MECHANICAL STRESS AND TO MONITOR A SYSTEM - Embodiments provide a circuit, a method, and a computer program configured to detect mechanical stress and a circuit, a method, and a computer program configured to monitor safety of a system. The detection circuit is configured to detect mechanical stress of a semiconductor circuit. The detection circuit comprises a stress monitor module configured to monitor mechanical stress of the semiconductor circuit and to provide monitor information related to a mechanical stress level of the semiconductor circuit. The detection circuit further comprises an activation signal generator configured to generate an activation signal comprising activation information related to the mechanical stress level of the semiconductor circuit if the monitor information indicates that a mechanical stress level criterion is fulfilled by the semiconductor circuit. | 02-12-2015 |
20150101417 | STRAIN GAUGE AND APPLICATIONS THEREOF - In one aspect, wireless strain gauges are described herein. In some embodiments, a wireless strain gauge comprises a radio frequency identification (RFID) tag and a nano-composite backplane coupled to the RFID tag, wherein the resonant frequency of the RFID tag antenna demonstrates an exponential dependence or substantially exponential dependence on the strain sensed by the strain gauge. | 04-16-2015 |
20150323302 | Flexible Strain Sensor, Method for Producing Same, and Measuring Device Including Same - A flexible strain sensor includes a substrate layer made of a flexible substrate and a conductive layer coated on the substrate layer. The conductive layer is made of ductile conductive metal material. An electrode is electrically connected to each of two sides of the conductive layer. A measuring device includes the flexible strain sensor, a measuring unit electrically connected to the electrodes of the flexible strain sensor by a signal line, and a processing unit coupled to the measuring unit. A method for producing a flexible strain sensor includes preparing a flexible substrate having a substrate layer. A conductive layer is formed on the flexible substrate by sputtering using silver, wolfram, or aluminum as a target material. An electrode of conductive material is formed on each of the two sides of the conductive layer. The electrodes are electrically connected to the two sides of the conductive layer respectively. | 11-12-2015 |
20150337090 | GRAPHENE FUNCTIONALIZED CARBON NANOTUBE POLYMER COMPOSITES AND METHODS FOR THEIR PREPARATION AND USE - Methods of forming graphene functionalized carbon nanotube polymer composites are provided. The methods can include functionalizing a plurality of carbon nanotubes using conducting functional molecules to form a composite nanofiller and embedding the composite nanofiller within a polymer material to form the graphene functionalized carbon nanotube polymer composite. | 11-26-2015 |
20150338294 | STRAIN GAGES WITH DISCRETE ELECTRICAL RESISTANCE TRIMMING - An electrical resistance strain gage includes a uniformly distributed electrical resistance of the active measuring area and a discrete electrical trim resistance within an active measuring are. The trim resistance may include an electrical conductor in an electrically parallel circuit such that the electrical conductor may be selectively electrically removed from the strain gage to trim the electrical resistance of the strain gage. The trim resistance does not modify the active strain sensing area or uniform grid length. | 11-26-2015 |
20150357078 | STRETCHABLE CONDUCTIVE COMPOSITES FOR USE IN SOFT DEVICES - An elastically-deformable, conductive composite using elastomers and conductive fibers and simple fabrication procedures is provided. Conductive elastomeric composites offer low resistance to electrical current and are elastic over large (>25%) extensional strains. They can be easily interfaced/built into structures fabricated from elastomeric polymers. | 12-10-2015 |
20160003694 | SENSOR AND METHOD OF MANUFACTURING THE SAME - A sensor and a method of manufacturing the same are provided. The sensor includes a substrate, a projecting portion including a plurality of projections that protrude upwardly from an upper portion of the substrate, and an electrode portion covering the projections and the upper portion of the substrate between the projections. The projecting portion of the sensor may have a micro-size projections and sense pressure applied thereto and a sliding movement thereon. | 01-07-2016 |
20160018252 | SENSOR INCLUDING ELECTRICAL TRANSMISSION-LINE PARAMETER THAT CHANGES RESPONSIVE TO VEHICULAR LOAD - An apparatus includes a sensor assembly. The sensor assembly includes a transmission-line assembly having an electrical transmission-line parameter configured to change, at least in part, in response to reception, at least in part, of a vehicular load of a moving vehicle moving relative to a vehicular roadway to the transmission-line assembly positionable, at least in part, relative to the vehicular roadway. | 01-21-2016 |
20160041048 | Detecting a State of a Wearable Device - An example method includes detecting a signal that represents a strain of a frame of a wearable computing device and causing the wearable computing device to perform a function based on the detected signal. The method may also include generating a representation of the detected signal, comparing the representation of the signal to a threshold value, and causing the wearable computing device to perform a function based on the comparison to the threshold value. An example wearable computing device and an example non-transitory computer readable medium related to the example method are also disclosed herein. | 02-11-2016 |
20160054185 | CORE-SHELL NANOFIBER TEXTILES FOR STRAIN SENSING, AND METHODS OF THEIR MANUFACTURE - This invention pertains to a low cost, low noise strain sensor based on a web of continuous core-shell nanofibers with conductive shell and mechanically robust core that can be attached or embedded on a variety objects for directional monitoring of static or dynamic changes in mechanical deformation and pressure. This is a low cost, highly sensitive strain sensor, with low noise and ease of integration for different applications from synthetic tactile skins, to vibrational and health monitoring. | 02-25-2016 |
20160069754 | PIEZOELECTRIC POSITION SENSOR FOR PIEZOELECTRICALLY DRIVEN RESONANT MICROMIRRORS - Embodiments of the present invention provide an apparatus including a micromirror, an excitation structure containing or supporting the micromirror, and at least one piezoelectric sensor. The excitation structure includes at least one piezoelectric actuator, the excitation structure being configured to resonantly excite the micromirror so as to cause a deflection of the micromirror. The at least one piezoelectric sensor is configured to provide a sensor signal dependent on the deflection of the micromirror, the piezoelectric sensor being connected to the excitation structure so that during the resonant excitation of the micromirror, the sensor signal and the deflection of the micromirror exhibit a fixed mutual phase relationship. | 03-10-2016 |
20160084734 | METHOD FOR ASSESSING A WEAR STATE OF A MODULE OF A TURBOMACHINE, MODULE, AND TURBOMACHINE - A method of evaluating a wear state of an assembly of a flow machine, in particular, of a bearing arrangement of a pump or turbine. For determining a wear characteristic, a mechanical query signal having a pre-definable signal shape is generated by a signal generator and a response signal generated from the query signal is detected using a sensor in contact with the assembly. The response signal is varied in dependence on a variation of a physical operating value of the assembly in accordance with a characteristic pattern, the wear characteristic is determined from the variation of the response signal and the wear state is evaluated using the wear characteristic. | 03-24-2016 |
20160097688 | PRESSURE ARRAY SENSOR MODULE AND MANUFACTURING METHOD THEREOF - A pressure array sensor module, comprising an array electrode board, a plurality of pressure sensing elements, at least one first conductive structure and at least one second conductive structure is provided. The array electrode board comprises a substrate and an electrode array disposed on the substrate and having a first electrode pattern and a second electrode pattern. Each pressure sensing element is disposed at a sensing position on the array electrode board, and comprises a top electrode layer, a bottom electrode layer and at least one pressure sensing layer disposed between the top electrode layer and the bottom electrode layer. The top electrode layer has a first lead. The bottom electrode layer has a second lead. The first conductive structure electrically connects the first lead and the corresponding first electrode pattern. The second conductive structure electrically connects the second lead and the corresponding second electrode pattern. | 04-07-2016 |
20160153762 | STRAIN SENSORS AND METHODS OF MANUFACTURE AND USE | 06-02-2016 |
20160169753 | PRESS DETECTING SENSOR | 06-16-2016 |
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20160377493 | MANUFACTURING METHOD OF STRAIN SENSOR, STRAIN SENSOR AND MOTION SENSING APPARATUS USING THE STRAIN SENSOR - A strain sensor according to the present disclosure includes a flexible substrate, a rigid pattern on a side of the flexible substrate, and a conductive flexible pattern extending in a first direction on a side of the flexible substrate, in which the conductive flexible pattern overlaps the rigid pattern such that as the flexible substrate is compressed or stretched, the conductive flexible pattern is compressed or stretched, thereby changing electric resistance. | 12-29-2016 |