Patents Assigned to MEASUREMENT SPECIALTIES
-
Patent number: 9851295Abstract: An optical spectral sensing device for determining at least one property of a fluid. The device has an elongated porous body, a first end and a second end, a solid-state optical emitter at the first end of the body oriented to emit radiation toward the second end of the body, and a solid-state optical detector at the second end of the body oriented to detect radiation emitted by the optical emitter and to output a signal responsive to absorption of radiation. The device is configured to determine depth of a fluid based on the signal output by the optical detector.Type: GrantFiled: November 20, 2015Date of Patent: December 26, 2017Assignee: MEASUREMENT SPECIALTIES, INC.Inventors: John Coates, Robert Qualls
-
Patent number: 9546913Abstract: Disclosed herein, among other things, is a stator winding temperature sensor. According to an embodiment, the sensor includes at least one sensing wire coil adapted to be connected to a stator. The sensor also includes a body, including a core material surrounding at least a portion of the sensing wire coil, and a laminate material over the core material. The body has a thickness adapted to protect the sensing wire coil. The sensor includes a lead wire adapted to connect to an external monitoring device. The sensing wire coil is electrically connected to the lead wire at a lead step portion of the sensor. In addition, the sensor includes a tab extending from the lead wire and encompassing the lead step. The tab protects the lead step and the sensing wire coil in a region where the sensor extends over an end of the stator.Type: GrantFiled: August 27, 2012Date of Patent: January 17, 2017Assignee: MEASUREMENT SPECIALTIES, INC.Inventors: Brad Lesmeister, Peter David Bernier, Mark Stewart
-
Patent number: 9534975Abstract: A pressure sensor assembly for measuring the pressure of a first fluid. The assembly having a first housing including a pressure sensing device arranged therein. A diaphragm is arranged on a surface of the first housing and is configured to transmit a force exerted on a first side thereof to the pressure sensing device. A second housing is provided and attached to the first housing. The second housing may be arranged generally circumferentially around the diaphragm. A compressible element is provided and arranged within a compressible element space defined within the second housing. The compressible element is configured to transmit a force exerted thereon by the fluid to the first side of the diaphragm.Type: GrantFiled: August 25, 2014Date of Patent: January 3, 2017Assignee: MEASUREMENT SPECIALTIES, INC.Inventors: Natasha V. Kachenko, David E. Wagner, Weijun Xie
-
Patent number: 9354130Abstract: A measuring device for steering wheel torque includes a magnetic sensor to measure a rotational torque of the steering wheel. The measuring device for steering wheel torque has the advantages of high measuring precision, non-contact, high reliability and low cost.Type: GrantFiled: May 28, 2012Date of Patent: May 31, 2016Assignee: MEASUREMENT SPECIALTIES (CHINA), LTD.Inventors: Haifeng Wang, Dirk Enderlein, Mitch Thompson, Axel Bartos
-
Patent number: 9316552Abstract: A differential pressure sensor includes a pressure sensing die comprising a semiconductor die, having a thinned portion forming a diaphragm. The diaphragm includes piezo-resistive elements that exhibit varying resistance based on force exerted on the diaphragm. A first support structure is bonded to a first surface of the semiconductor die, having an aperture defined through the support structure such that a first surface of the diaphragm is exposed through the aperture. A second support structure is bonded to the opposite side of the semiconductor die having an aperture aligned with the opposing side of the diaphragm. Electrical components in electrical communication with the piezo-resistive elements are arranged outside the region defined by the bond between the first and second support structures and the semiconductor die. An oil-filled volume may be defined between the semiconductor die and a harsh medium which transmits a fluid pressure to the die without the harsh medium contacting the die.Type: GrantFiled: February 28, 2014Date of Patent: April 19, 2016Assignee: MEASUREMENT SPECIALTIES, INC.Inventors: David E. Wagner, James H. Hoffman, Kaspar L. Jenni
-
Publication number: 20160054192Abstract: A pressure sensor assembly for measuring the pressure of a first fluid. The assembly having a first housing including a pressure sensing device arranged therein. A diaphragm is arranged on a surface of the first housing and is configured to transmit a force exerted on a first side thereof to the pressure sensing device. A second housing is provided and attached to the first housing. The second housing may be arranged generally circumferentially around the diaphragm. A compressible element is provided and arranged within a compressible element space defined within the second housing. The compressible element is configured to transmit a force exerted thereon by the fluid to the first side of the diaphragm.Type: ApplicationFiled: August 25, 2014Publication date: February 25, 2016Applicant: MEASUREMENT SPECIALTIES, INC.Inventors: Natasha V. Kachenko, David E. Wagner, Weijun Xie
-
Publication number: 20150247773Abstract: A differential pressure sensor includes a pressure sensing die comprising a semiconductor die, having a thinned portion forming a diaphragm. The diaphragm includes piezo-resistive elements that exhibit varying resistance based on force exerted on the diaphragm. A first support structure is bonded to a first surface of the semiconductor die, having an aperture defined through the support structure such that a first surface of the diaphragm is exposed through the aperture. A second support structure is bonded to the opposite side of the semiconductor die having an aperture aligned with the opposing side of the diaphragm. Electrical components in electrical communication with the piezo-resistive elements are arranged outside the region defined by the bond between the first and second support structures and the semiconductor die. An oil-filled volume may be defined between the semiconductor die and a harsh medium which transmits a fluid pressure to the die without the harsh medium contacting the die.Type: ApplicationFiled: February 28, 2014Publication date: September 3, 2015Applicant: MEASUREMENT SPECIALTIES, INC.Inventors: David E. Wagner, James H. Hoffman, Kaspar L. Jenni
-
Publication number: 20140251021Abstract: A miniature pressure scanning system includes a plurality of miniature pressure sensors where each pressure sensors includes at least one sensor output for providing an analog output signal indicative of a detected pressure on a body, and each pressure sensor output has an associated output impedance; a plurality of buffers, each buffer electrically connected to the output port of a corresponding one of the pressure sensors, and configured to reduce the associated output impedance of the corresponding sensor output coupled thereto, and further configured to provide at an output of the buffer the analog output pressure signal from the pressure sensor; and a multiplexer coupled downstream of the plurality of buffers and configured to multiplex the buffered analog output pressure signals to output a multiplexed analog signal representing the detected pressures.Type: ApplicationFiled: March 5, 2013Publication date: September 11, 2014Applicant: MEASUREMENT SPECIALTIES, INC.Inventor: Steven Mark Keeter
-
Publication number: 20140050054Abstract: A multilayer backing absorber for use with an ultrasonic transducer comprises a plurality of absorber elements, each absorber element having at least one metal layer and at least one adhesive layer, wherein the backing absorber is adapted to be coupled to a vibrating layer of the ultrasonic transducer.Type: ApplicationFiled: October 25, 2013Publication date: February 20, 2014Applicant: MEASUREMENT SPECIALTIES, INC.Inventors: Minoru Toda, Mitchell L. Thompson
-
Publication number: 20130257226Abstract: A transducer useful for medical imaging ultrasonic transducers comprises a front impedance matching layer, a piezoelectric array, and a rear layer. The front impedance matching layer may include a return connection region electrically coupled to a distal end of the piezoelectric array and a front metal layer with a return signal portion for routing the return signal from the distal end of the transducer to a flex circuit of the rear layer at a proximal end of the transducer. In an embodiment, the rear layer may include a return connection region that is electrically coupled to the piezoelectric array at a distal end of the transducer and also electrically coupled to the signal return lines of a flex circuit at the distal end of the transducer.Type: ApplicationFiled: March 30, 2012Publication date: October 3, 2013Applicant: MEASUREMENT SPECIALTIES, INC.Inventors: Brent Michael Nobles, Minoru Toda, Mitchell L. Thompson, Edward P. Harhen
-
Publication number: 20130002094Abstract: An impedance conversion layer useful for medical imaging ultrasonic transducers comprises a low impedance polymer layer and a high impedance metal layer. These layers are combined with corresponding thicknesses adapted to provide a function of converting from a specific high impedance to specific low impedance, wherein the polymer layer is at the high impedance side and the metal layer is at the low impedance side. The effective acoustic impedance of the polymer and metal layer combination may be adapted to configure an impedance converter in the same way as a quarter wavelength impedance converter, converting from low impedance to high impedance (metal to polymer) or from a high impedance to low impedance (polymer to metal). This structure may be used for front matching with the propagation medium and back matching with an absorber for ultrasonic transducers.Type: ApplicationFiled: September 11, 2012Publication date: January 3, 2013Applicant: MEASUREMENT SPECIALTIES, INC.Inventors: Minoru Toda, Mitchell L. Thompson
-
Publication number: 20120105054Abstract: An accelerometer is provided having a power circuit, a detection circuit, and a compensation circuit. The compensation circuit is operative to measure an offset voltage occurring between an output reference voltage from the power circuit and an output voltage from the detection circuit state, store the offset voltage during a zero acceleration, and output the stored offset voltage to alter the output voltage of the detection circuit.Type: ApplicationFiled: October 28, 2010Publication date: May 3, 2012Applicant: MEASUREMENT SPECIALTIES, INC.Inventors: Thomas F. Connolly, Ming Zhong
-
Publication number: 20110233392Abstract: An encoder to be mounted to a piston meter and configured to compute a volume of distributed fluid includes a light sensor configured to detect a light sequence and output signals indicative of the light sequence to a processing device, the processing device configured to determine if the light sequence is one of one or more authorized light sequences, wherein the processing device enters a calibration mode if the light sequence is one of the one or more authorized light sequences.Type: ApplicationFiled: February 2, 2011Publication date: September 29, 2011Applicant: MEASUREMENT SPECIALTIES, INC.Inventor: Philip A. Amante
-
Publication number: 20110148399Abstract: An encoder to be mounted to a shaft extending from a piston meter configured to compute a volume of distributed fluid includes a magnet affixed to the shaft via a floating magnet holder, a magnetic sensor configured to sense the flux density and direction of a magnetic field created by the magnet and to output a signal indicating the flux density and direction of the magnetic field to a printed circuit board, and the printed circuit board configured to output a signal indicating the volume of distributed fluid if the encoder has not been tampered with and configured to output an error signal if the encoder has been tampered with.Type: ApplicationFiled: November 23, 2010Publication date: June 23, 2011Applicant: MEASUREMENT SPECIALTIES, INC.Inventors: Philip A. Amante, Jeffrey Creak
-
Publication number: 20110050039Abstract: An impedance conversion layer useful for medical imaging ultrasonic transducers comprises a low impedance polymer layer and a high impedance metal layer. These layers are combined with corresponding thicknesses adapted to provide a function of converting from a specific high impedance to specific low impedance, wherein the polymer layer is at the high impedance side and the metal layer is at the low impedance side. The effective acoustic impedance of the polymer and metal layer combination may be adapted to configure an impedance converter in the same way as a quarter wavelength impedance converter, converting from low impedance to high impedance (metal to polymer) or from a high impedance to low impedance (polymer to metal). This structure may be used for front matching with the propagation medium and back matching with an absorber for ultrasonic transducers.Type: ApplicationFiled: July 14, 2010Publication date: March 3, 2011Applicant: MEASUREMENT SPECIALTIESInventors: Minoru Toda, Mitchell L. Thompson
-
Publication number: 20080278353Abstract: A tamper resistant user interface device includes a substantially planar sensor. The sensor includes a plurality of user activated membrane switches. At least one multilayer structure is folded around and overlays the planar sensor. The structure includes at least one layer to detect tampering with the sensor.Type: ApplicationFiled: May 9, 2008Publication date: November 13, 2008Applicant: MEASUREMENT SPECIALTIES, INC.Inventors: Peter R. Smith, Susan H. Zaks
-
Publication number: 20080178687Abstract: An axial flow meter includes a housing including a generally elongated body with a continuous internal bore. Two spindles are mounted parallel to one another in the housing. Each spindle has a blade on the exterior surface of the spindle. Blades on each of the two spindles engage with each other. Bearings at each end of both spindles engage the spindles. At least one of the bearings engaging each one of the spindles is fixed in a position relative to the elongated body thereby preventing axial movement of the two spindles while allowing rotational movement of the two spindles.Type: ApplicationFiled: January 29, 2008Publication date: July 31, 2008Applicant: MEASUREMENT SPECIALTIESInventors: Philip A. Amante, John K. Narney