Contact stress sensor

Title: Contact stress sensor

A method for producing a contact stress sensor that includes one or more MEMS fabricated sensor elements, where each sensor element of includes a thin non-recessed portion, a recessed portion and a pressure sensitive element adjacent to the recessed portion. An electric circuit is connected to the pressure sensitive element. The circuit includes a pressure signal circuit element configured to provide a signal upon movement of the pressure sensitive element.

Inventors:: Kotovsky, Jack

Issue Date:: 2014-02-11

OSTI Identifier:: 1124617

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA) LLNL

Patent Number(s):: 8,646,335

Application Number:: 13/349,492

Contract Number:: AC52-07NA27344

Research Org:: LLNL (Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States))

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

Full Text
View Full Text

Other works cited in this record:

Flexible miniature ribbon cables for long-term connection to implantable sensors
journal, April 1990

Hetke, J. F.; Najafi, K.; Wise, K. D.
Sensors and Actuators A: Physical, Vol. 23, Issue 1-3, p. 999-1002
DOI: 10.1016/0924-4247(90)87076-U

Review Article Tactile sensing for mechatronics—a state of the art survey
journal, February 1999

Lee, M. H.; Nicholls, H. R.
Mechatronics, Vol. 9, Issue 1, p. 1-31
DOI: 10.1016/S0957-4158(98)00045-2

New tactile sensor chip with silicone rubber cover
journal, September 2000

Leineweber, Michael; Pelz, Georg; Schmidt, Michael
Sensors and Actuators A: Physical, Vol. 84, Issue 3, p. 236-245
DOI: 10.1016/S0924-4247(00)00310-1

A miniature piezoelectric polymer transducer for in vitro measurement of the dynamic contact stress distribution
journal, June 1992

Manouel, Mehran; Pearlman, Hubert S.; Belakhlef, Abdelfatihe
Journal of Biomechanics, Vol. 25, Issue 6, p. 627-635
DOI: 10.1016/0021-9290(92)90104-9

Similar records in DOepatents and OSTI.GOV collections:

Microelectromechanical systems contact stress sensor

Patent Kotovsky, Jack

A microelectromechanical systems stress sensor comprising a microelectromechanical systems silicon body. A recess is formed in the silicon body. A silicon element extends into the recess. The silicon element has limited freedom of movement within the recess. An electrical circuit in the silicon element includes a piezoresistor material that allows for sensing changes in resistance that is proportional to bending of the silicon element.
Full Text Available December 2007
Contact stress sensor

Patent Kotovsky, Jack

A contact stress sensor includes one or more MEMS fabricated sensor elements, where each sensor element of includes a thin non-recessed portion, a recessed portion and a pressure sensitive element adjacent to the recessed portion. An electric circuit is connected to the pressure sensitive element. The circuit includes a thermal compensator and a pressure signal circuit element configured to provide a signal upon movement of the pressure sensitive element.
Full Text Available February 2012
Non-contact current and voltage sensor

Patent Carpenter, Gary D ; El-Essawy, Wael ; Ferreira, Alexandre Peixoto ; Keller, Thomas Walter ; Rubio, Juan C ; Schappert, Michael A

A detachable current and voltage sensor provides an isolated and convenient device to measure current passing through a conductor such as an AC branch circuit wire, as well as providing an indication of an electrostatic potential on the wire, which can be used to indicate the phase of the voltage on the wire, and optionally a magnitude of the voltage. The device includes a housing that contains the current and voltage sensors, which may be a ferrite cylinder with a hall effect sensor disposed in a gap along the circumference to measure current, or alternative a winding provided through themore »« less
Full Text Available March 2014
Non-contact current and voltage sensor having detachable housing incorporating multiple ferrite cylinder portions

Patent Carpenter, Gary D. ; El-Essawy, Wael ; Ferreira, Alexandre Peixoto ; Keller, Thomas Walter ; Rubio, Juan C. ; Schappert, Michael A.

A detachable current and voltage sensor provides an isolated and convenient device to measure current passing through a conductor such as an AC branch circuit wire, as well as providing an indication of an electrostatic potential on the wire, which can be used to indicate the phase of the voltage on the wire, and optionally a magnitude of the voltage. The device includes a housing formed from two portions that mechanically close around the wire and that contain the current and voltage sensors. The current sensor is a ferrite cylinder formed from at least three portions that form the cylindermore »« less
Full Text Available April 2016
Oscillatory motion based measurement method and sensor for measuring wall shear stress due to fluid flow

Patent Armstrong, William D ; Naughton, Jonathan ; Lindberg, William R

A shear stress sensor for measuring fluid wall shear stress on a test surface is provided. The wall shear stress sensor is comprised of an active sensing surface and a sensor body. An elastic mechanism mounted between the active sensing surface and the sensor body allows movement between the active sensing surface and the sensor body. A driving mechanism forces the shear stress sensor to oscillate. A measuring mechanism measures displacement of the active sensing surface relative to the sensor body. The sensor may be operated under periodic excitation where changes in the nature of the fluid properties or themore »« less
Full Text Available September 2008