Abstract: A deformation sensing apparatus comprises an elastic substrate, a first strain-gauge element formed on a first surface of the elastic substrate, and configured to output a first signal in response to a strain applied in a first direction, and a second strain-gauge element formed on a second surface of the elastic substrate opposite to the first surface, and configured to output a second signal in response to a strain applied in the same first direction.

Abstract: A method and system is disclosed for determining upper strain limits for materials, and designing devices or components based on determined strain limits.

Abstract: A pressure sensor to measure the pressure of a fluid comprises: a metallic membrane to be in contact with the fluid and on which are stacked an electrical insulator and at least one gauge for measuring the deformation of the membrane, the whole forming a sensitive measuring element a cap comprising: a cover comprising a cavity and holes; conductors located in the holes, the sensitive element exhibiting a face opposite the cap and located in a plane P; wherein the sensor comprises: at least one metallic zone, located in a plane parallel to said plane P, for hermetic sealing of the cap on the sensitive measuring element; continuous metallic tracks comprising parts for picking up contact with the conductors and parts for picking up contact with at least the gauge. A method for manufacturing the pressure sensor is also provided.

Abstract: A stress detector for detecting an in-situ stress profile of an electrode has a liquid cell, a holder configured to attach to one end of a sample electrode so that the sample electrode is cantilevered in the liquid cell, a piezo sensor comprising a piezo material in the liquid cell and having a movable end configured to contact the sample electrode and a fixed end fixedly engaged within the liquid cell and a measurement sensor in contact with the piezo sensor.

Abstract: A system to detect a pressure difference between the interior of a cabin of an aircraft and the exterior of the aircraft. The system includes a window arrangement having a first windowpane with a first surface and an opposite second surface and is adapted to be mounted in an aircraft such that the first surface of the first windowpane faces the exterior of the aircraft and is subjected to ambient outside atmospheric pressure and the second surface faces the cabin interior, and a pressure sensor including a first pressure port. The first windowpane includes a first air passage opening extending between the first and second surfaces of the first windowpane, and the pressure sensor is sealingly connected to the first air passage opening such that the first pressure port of the pressure sensor is subjected to pressure acting on the first surface of the first windowpane.

Abstract: A ring arrangement with a synthetic material sealing ring between an outer radial guiding ring and an inner radial guiding ring, wherein the outer guiding ring has a greater coefficient of thermal expansion than the inner guiding ring, so that an effective volume expansion coefficient of an annular gap between the guiding rings is greater than the volume expansion coefficient of the synthetic material of the synthetic material sealing ring. Through a large effective coefficient of thermal expansion for the annular gap volume, as achieved via different coefficients of expansion of the outer and inner guiding rings, fluctuation of the axial clamping forces of the synthetic material sealing ring can be limited.

Abstract: A peak hold circuit configured for use in a downhole sensor includes a long tail pair circuit, a correction circuit, and a current mirror circuit. The current mirror circuit includes two current mirrors connected to a long tail pair formed by a first transistor and a second transistor. The current mirror also includes a first resistor and a second resistor connected to a third transistor. The first transistor is connected to a correction transistor of the correction circuit. The value of the first resistor is selected to be essentially equal to the same value as the second resistor so that when the long tail pair is balanced, the current flowing through a collector of the second transistor is equal to the current flowing through the first transistor, causing the correction transistor to switch off.

Abstract: The present disclosure discloses a device, a container and a method for measuring a liquid volume in a container based on air pressure sensing. The measuring device includes a moving member, a unidirectional member, an air pressure detection device and a controller. The moving member is connected with a con tamer to be detected to form a gas storage space. By using the unidirectional member, the gas storage space is communicated with the external environment when the volume decreases, and remains sealed with the external environment when the volume increases. The air pressure detection device is disposed on the moving member to measure a pressure value in the gas storage space. The device accurately measures the liquid volume in the container, effectively eliminates the interference of liquid motion on the measurement result, and can be conveniently used to detect a water volume in the natural usage.

Abstract: A latch indicator apparatus for indicating a locked status of an attachment between a cable housing and a cable receptor. The latch indicator apparatus includes a latch indicator attached to a cable housing at an attachment point, a first resistive element having a first resistance, and is attached to the cable housing at the attachment point. The restive element of the latch indicator attaches to an indicator tab. The latch indicator includes an indicator window, which is positioned to indicate a locked status of the latch indicator based on the first resistance of the first resistive element. The latch indicator tests a connection between a cable housing and a cable housing by indicating a locked status. The locked status is indicated by exerting a first force on the indicator tab by pulling the indicator tab in a direction away from the connection between the cable housing and the cable receptor.

Abstract: 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.

Abstract: This disclosure provides example methods, devices, and systems for a sensor having a front seal. In one embodiment, a system may comprise a sensing element; a header coupled to the sensing element; a housing coupled to the header; a screen joined to an adaptor and coupled to the housing, wherein a first gap separates the adapter and the sensing element and a second gap separates the adapter and the header; and wherein a stress applied at a front surface of the adapter is transferred to the housing, and the first gap is used to isolate the sensing element from the stress and the second gap is used to isolate the header from the stress.

Abstract: An Internet of Thing (IoT) device includes a head portion; an elongated stress sensor coupled to the head portion, the stress sensor coupled to a surface; a processor coupled to the stress sensor; and a wireless transceiver coupled to the processor.

Abstract: According to an embodiment, a device includes a substrate, a transducer die disposed over the substrate, a cover disposed over the transducer die, and a support structure connecting the cover to the substrate. The support structure includes a port configured to allow transfer of fluidic signals between an ambient environment and the transducer die.

Abstract: Disclosed herein is a multi-axis force sensor which includes a vertical measurement module to measure a vertical component of force applied to a point of application, and a horizontal measurement module to measure a horizontal component of force applied to the point of application, wherein the vertical measurement module has a body horizontally moved by the horizontal component of force applied to the point of application, and the horizontal measurement module measures the horizontal component of force applied to the point of application, based on the movement of the body of the vertical measurement module.

Abstract: According to an embodiment, a method of measuring wind speed includes measuring atmospheric pressure at a first pressure sensor arranged inside a case and shielded from wind, measuring air pressure at a second pressure sensor arranged at an opening in the case, and determining wind speed at the opening in the case based on measuring the atmospheric pressure and the air pressure.

Abstract: A thermal sensor comprises a converter circuit, a counting circuit, and a ratio calculator. The converter circuit is configured to convert a temperature-independent signal into a first frequency signal, and to convert a temperature-dependent signal into a second frequency signal. The counting circuit is configured to receive at least one of the first frequency signal and the second frequency signal, to count a predetermined number of pulses of the first frequency signal, and to count a number of pulses of the second frequency signal for a time period corresponding to the counting of the predetermined number of pulses of the first frequency signal. The ratio calculator is configured to calculate a ratio based on the predetermined number of pulses of the first frequency signal and the counted number of pulses of the second frequency signal.

Abstract: The disclosed micro-sensor includes: a substrate including a first portion and a second portion; a third portion and fourth portion provided between the portions and connected to the first portion and the second portion respectively by an elastic member; detection and a counter including: a counting gear, a third beam capable of meshing with the gear, an amplifier for the value of a relative movement between the portions and including: a first beam attached at one end thereof to the third portion and at the other end thereof to a plate, a second beam attached at one end thereof to the fourth portion and at the other end thereof to the plate, the third beam being attached on one side to the plate and including a tooth capable of meshing with the gear.

Abstract: A device is provided for placing one or more sensors along the inside surface of a tire. The device can accommodate tires of different shapes and sizes as well as projecting features along the inside surface of the tire. In one embodiment, sensors can be inserted into the interior of the tire and simultaneously deployed along the inside surface of both sidewalls. This embodiment of the device allows for repeated insertion and withdrawal of the sensors over a range of tire sizes so as to automate steps in the inspection process.

Abstract: A system and a process for detecting early stage electrical components problems with an analysis system is disclosed. The system process includes determining an oil quality of the oil of an electrical component using the analysis system. The system the process further including determining dissolved gases in the oil of the electrical component using the analysis system, processing and analyzing the oil quality and the dissolved gases using the analysis system, and determining whether there are problems in the electrical component using the analysis system.

Abstract: An impact-acoustic method for testing a tire is provided along with a tire anomaly detection system in which an actuatable impactor is provided with an acoustic transducer and a force transducer. A plurality of discriminator quantities is calculated from acoustic signals and force signals and the calculated discriminator quantities are compared with stored discriminator quantities to determine whether an anomaly is present in the tire.