Abstract: A flexible transducer structure suitable for attaching to a curved surface such as the leading edge of an aircraft wing is provided. In one example embodiment, a method may include receiving, at a sensor disposed on a flexible sheet, a pressure, wherein the sensor is electrically coupled to a conductive trace disposed on the flexible sheet; measuring, by the sensor, the pressure to generate a pressure signal; outputting, by the sensor, to the conductive trace, the pressure signal, wherein the conductive trace extends away from the sensor on the flexible sheet; and wherein the flexible sheet is adaptable to conform to a contour of a curved surface.

Abstract: A piezoresistive sensor device and a method for making a piezoresistive device are disclosed. In one example, a method may comprise receiving, by a sensor device having a contact, a pressure; measuring, by the sensor device, the pressure to generate a pressure signal; outputting, by the sensor device, to the contact, the pressure signal; and receiving, by a header pin, from the contact, the pressure signal, wherein the header pin and the contact are electrically coupled using a conductive, non-lead containing frit and are aligned using a contact cover that is coupled to the sensor device using a non-conductive, non-lead containing frit.

Abstract: A method, device and system for a gage pressure transducer including the making thereof are provided. In one embodiment, a method comprises receiving, at a first diaphragm, a first pressure, wherein the first diaphragm is composed of metal; transferring, from the first diaphragm, to a first sensor, the first pressure using a first oil region, wherein the first oil region is disposed between the first diaphragm and the first sensor; receiving, at the first sensor, the first pressure; measuring, by the first sensor, the first pressure to generate a first pressure signal; and outputting, from the first sensor, to a first header pin, the first pressure signal, wherein the first header pin is electrically coupled to the first sensor using a first conductive glass frit.

Abstract: A piezoresistive sensor device and a method for making a piezoresistive device are disclosed. The sensor device comprises a silicon wafer having piezoresistive elements and contacts in electrical communication with the elements. The sensor device further comprises a contact glass coupled to the silicon wafer and having apertures aligned with the contacts. The sensor device also comprises a non-conductive frit for mounting the contact glass to a header glass, and a conductive non-lead glass frit disposed in the apertures and in electrical communication with the contacts. The method for making a piezoresistive sensor device, comprises bonding a contact glass to a silicon wafer such that apertures in the glass line up with contacts on the wafer, and filling the apertures with a non-lead glass frit such that the frit is in electrical communication with the contacts.

Abstract: Disclosed herein is an electronic switch that comprises a pressure sensitive bridge array adapted to monitor pressure and activate an indicator when the monitored pressure exceeds a predetermined value indicative of a dangerous condition. The electronic switch further comprises a monitoring circuit adapted to test the overall operability of the pressure sensitive bridge array and its accompanying electronics control circuitry.

Abstract: A semiconductor filter is provided to operate in conjunction with a differential pressure transducer. In one embodiment, a method comprises receiving, at a filter having a plurality of apertures, a pressure, wherein the pressure includes a static pressure component and a dynamic pressure component; filtering, by the plurality of apertures, at least a portion of the dynamic pressure component of the pressure, wherein a diameter of each of the plurality of apertures is such that the plurality of apertures filters at least the portion of the dynamic pressure component of the pressure; outputting, from the filter, a filtered pressure; and wherein the filtered pressure is used to determine the dynamic pressure component of the pressure.

Abstract: A pressure transducer assembly including: a pressure sensor header; a transducer assembly member; and a joining arrangement disposed at an interface of the header and the transducer assembly member, for joining the header with the transducer assembly member, the joining arrangement including: a recessed female joining element formed in one of the header and the transducer assembly member; and a protruding male joining element formed on the other of the header and the transducer assembly member, the male joining element received in the female joining element.

Abstract: There is disclosed a high pressure sensing header which is relatively insensitive to mounting torque. The header generally includes an outer torque isolating shell which has a “C” shaped cross section with the cylindrical shell surrounding an inner “H” section header. The inner “H” section header has a thick diaphragm and is at least partially surrounded by the torque isolating shell. In this manner, when the header is installed, the installation force is absorbed by the outer shell and there is relatively no installation force or torque exhibited by the inner “H” section which will respond only to stress due to pressure.

Abstract: A flexible transducer structure suitable for attaching to a curved surface such as the leading edge of an aircraft wing is provided. In one example embodiment, a method may include receiving, at a sensor disposed on a flexible sheet, a pressure, wherein the sensor is electrically coupled to a conductive trace disposed on the flexible sheet; measuring, by the sensor, the pressure to generate a pressure signal; outputting, by the sensor, to the conductive trace, the pressure signal, wherein the conductive trace extends away from the sensor on the flexible sheet; and wherein the flexible sheet is adaptable to conform to a contour of a curved surface.

Abstract: A pressure transducer comprising a corrosion resistant metal diaphragm, having an active region, and capable of deflecting when a force is applied to the diaphragm; and a piezoresistive silicon-on-insulator sensor array disposed on a single substrate, the substrate secured to the diaphragm, the sensor array having a first outer sensor near an edge of the diaphragm at a first location and on the active region, a second outer sensor near an edge of the diaphragm at a second location and on the active region, and at least one center sensor substantially overlying a center of the diaphragm, the sensors connected in a bridge array to provide an output voltage proportional to the force applied to the diaphragm. The sensors are dielectrically isolated from the substrate.

Abstract: A piezoresistive sensor device and a method for making a piezoresistive device are disclosed. In one example, a method may comprise receiving, by a sensor device having a contact, a pressure; measuring, by the sensor device, the pressure to generate a pressure signal; outputting, by the sensor device, to the contact, the pressure signal; and receiving, by a header pin, from the contact, the pressure signal, wherein the header pin and the contact are electrically coupled using a conductive, non-lead containing frit and are aligned using a contact cover that is coupled to the sensor device using a non-conductive, non-lead containing frit.

Abstract: This disclosure provides example methods, devices and systems associated with a torque-insensitive header assembly. In one embodiment, a method comprises receiving, by a sensor, from an aperture defined by a shell, an environmental condition, wherein the sensor is coupled to a header and the header is coupled to the shell such that the sensor is isolated from a torque stress applied to the shell; measuring, by the sensor, the environmental condition to determine an environmental condition signal; and outputting, from the sensor, the environmental condition signal.

Abstract: This disclosure provides example methods, devices and systems associated with filter structures employed with sensors. In one embodiment, a method comprises receiving, at a first filter having a plurality of pores, a pressure, wherein the pressure includes a static pressure component and a dynamic pressure component; filtering, by the first filter, at least a portion of the dynamic pressure component of the pressure; outputting, from the first filter, a filtered pressure; and wherein the filtered pressure is used to determine the dynamic pressure component.

Abstract: Systems and methods for an internally switched multiple range transducer are provided. In one embodiment, a method comprises receiving, at a first sensor, a pressure, wherein the first sensor is associated with a first pressure range; measuring, at the first sensor, the pressure to generate a first pressure signal; in response to determining that the first pressure signal is not associated with the first pressure range, activating a second sensor, wherein the second sensor is associated with a second pressure range that is different from the first pressure range; and measuring, at the second sensor, the pressure to generate a second pressure signal.

Abstract: A method, device and system are provided for measuring multiple pressures under severe conditions. In one embodiment, a method comprises receiving, by a processor, from a first sensor, a first pressure signal; receiving, by the processor, from a second sensor, a second pressure signal; receiving, by the processor, from a first memory, a first correction coefficient for the first sensor; receiving, by the processor, from a second memory, a second correction coefficient for the second sensor; modifying, by the processor, the first pressure signal using the first correction coefficient to generate a first corrected pressure signal; modifying, by the processor, the second pressure signal using the second correction coefficient to generate a second corrected pressure signal; and outputting, by the processor, the first corrected pressure signal and the second corrected pressure signal.

Abstract: A method, device and system for a gage pressure transducer including the making thereof are provided. In one embodiment, a method comprises receiving, at a first diaphragm, a first pressure, wherein the first diaphragm is composed of metal; transferring, from the first diaphragm, to a first sensor, the first pressure using a first oil region, wherein the first oil region is disposed between the first diaphragm and the first sensor; receiving, at the first sensor, the first pressure; measuring, by the first sensor, the first pressure to generate a first pressure signal; and outputting, from the first sensor, to a first header pin, the first pressure signal, wherein the first header pin is electrically coupled to the first sensor using a first conductive glass frit.

Abstract: A differential pressure transducer employing a coiled tube to eliminate varying pressure fluctuations is provided. In one embodiment, a method comprises receiving, at an inlet tube of a dampening chamber, a main pressure, wherein the main pressure includes a static pressure component and a dynamic pressure component; filtering, by the inlet tube, at least a portion of the dynamic pressure component of the main pressure; outputting, from the inlet tube, a first filtered main pressure; receiving, at a volume cavity of the dampening chamber, the first filtered main pressure, wherein the volume cavity is operatively coupled to the inlet tube; filtering, by the volume cavity, at least a portion of the dynamic pressure component of the first filtered main pressure; outputting, from the volume cavity, a second filtered main pressure; and wherein the dampening chamber is tuned to a predetermined resonance frequency.

Abstract: A dual diaphragm pressure transducer, or sensor, with compensation for non-pressure effects is disclosed. The pressure sensor can include two pressure transducers located on separate portions of a chip. The first pressure transducer can be a differential pressure transducer, which produces a signal proportional to one or more applied pressures and includes other non-pressure effects. The second pressure transducer can be sealed in a hermetic chamber and thus can produce a signal proportional only to non-pressure effects. The signals can be combined to produce a signal proportional to the applied pressures with no non-pressure effects. The first and second pressure transducers can be physically and/or electrically isolated to improve sealing between the two pressure transducers and prevent pressure leaks therebetween.

Abstract: A transducer comprising a filter assembly that measures low amplitude, dynamic pressure perturbations superimposed on top of a high static pressure through the implementation of a low-pass mechanical filter assembly. The filter assembly may comprise a dual lumen reference tube and a removable filter subassembly further comprising a porous metal filter and narrow diameter tube. The transducer, which may be capable of operating at ultra-high temperatures and in harsh environments, may comprise of a static piezoresistive pressure sensor, which measures the large pressures on the order of 200 psi and greater, and an ultrasensitive, dynamic piezoresistive pressure sensor which may capture small, high frequency pressure oscillations on the order of a few psi. The filter assembly may transmit static pressure to the back of the dynamic pressure sensor to cancel out the static pressure present at the front of the sensor while removing dynamic pressure.

Abstract: A gage pressure transducer comprising a first pressure sensing assembly exposed to a main pressure and a second pressure sensing assembly exposed to a reference pressure. The pressure sensing assemblies comprise half-bridge sensors and means for using an alignment glass plate with each sensor which reduces the amount of oil required for operation, which consequently reduces the back pressures caused by large volumes of oil. The pressure sensor assemblies are hermetically sealed using glass frits, therefore enabling the gage pressure transducer to robustly and accurately measure pressure in harsh environments.