Patents Assigned to Seismic Systems, Inc.
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Publication number: 20130099104Abstract: An interrogator for a plurality of sensor fiber optic gratings. The interrogator includes a broadband optical source; at least one beam splitter directing output of the optical source to the sensor fiber optic gratings; at least one linear filter for converting changes in peak reflection wavelength to changes in intensity; at least one optical receiver; and at least one amplifier associated with each optical receiver. The interrogator also includes an analog integrator following the at least one amplifier.Type: ApplicationFiled: November 26, 2012Publication date: April 25, 2013Applicant: US Seismic Systems, Inc.Inventor: US Seismic Systems, Inc.
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Patent number: 8401354Abstract: A fiber optic security system is provided. The fiber optic security system includes at least one length of fiber optic cable affixed to at least one item to be monitored using the fiber optic security system. The fiber optic security system also includes at least one local control node, the at least one local control node including at least one light source for generating and transmitting light through the at least one length of fiber optic cable, and the at least one local control node monitoring a status of the light. The fiber optic security system also includes a remote control unit for receiving information from the at least one local control node regarding the status of the light.Type: GrantFiled: August 4, 2010Date of Patent: March 19, 2013Assignee: US Seismic Systems, Inc.Inventors: Eric Lee Goldner, Gerald Robert Baker, James Kengo Anderson, Agop Hygasov Cherbettchian
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Publication number: 20130034351Abstract: A personnel monitoring system. The personnel monitoring system includes a host node having an optical source for generating optical signals, and an optical receiver. The personnel monitoring system also includes a plurality of fiber optic sensors for converting at least one of vibrational and acoustical energy to optical intensity information, each of the fiber optic sensors having: (1) at least one length of optical fiber configured to sense at least one of vibrational and acoustical energy; (2) a reflector at an end of the at least one length of optical fiber; and (3) a field node for receiving optical signals from the host node, the field node transmitting optical signals along the at least one length of optical fiber, receiving optical signals back from the at least one length of optical fiber, and transmitting optical signals to the optical receiver of the host node.Type: ApplicationFiled: February 17, 2011Publication date: February 7, 2013Applicant: US Seismic Systems, Inc.Inventors: Eric Lee Goldner, Gerald Robert Baker, James Kengo Andersen, Agop Hygasov Cherbettchian, Jeffrey Carl Buchholz
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Publication number: 20130025375Abstract: An optical detection system for monitoring a pipeline. The optical detection system includes a host node in the vicinity of or remote from, a pipeline to be monitored. The optical detection system includes (a) an optical source for generating optical signals, and (b) an optical receiver.Type: ApplicationFiled: February 17, 2011Publication date: January 31, 2013Applicant: US SEISMIC SYSTEMS, INCInventors: Eric Lee Goldner, Gerald Robert Baker, James Kengo Andersen, Agop Hygasov Cherbettchian
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Patent number: 8330096Abstract: An interrogator for a plurality of sensor fiber optic gratings. The interrogator includes a broadband optical source; at least one beam splitter directing output of the optical source to the sensor fiber optic gratings; at least one linear filter for converting changes in peak reflection wavelength to changes in intensity; at least one optical receiver; and at least one amplifier associated with each optical receiver. The interrogator also includes, alternatively, a driver/modulator for the optical source providing on/off pulses; an analog integrator following the at least one amplifier; or a mechanism compensating for masking of one sensor fiber optic grating by another.Type: GrantFiled: November 29, 2011Date of Patent: December 11, 2012Assignee: US Seismic Systems, Inc.Inventors: Eric Lee Goldner, Gerald Robert Baker
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Publication number: 20120227504Abstract: A fiber optic acoustic sensor system. The fiber optic acoustic sensor system includes an optical source, and a fiber optic acoustic sensor array configured to receive an optical signal from the optical source. The fiber optic acoustic sensor array includes a core, a first polymer layer disposed on the core, an optical fiber wound around the first polymer layer, and a second polymer layer disposed on the first polymer layer such that the optical fiber is between the first polymer layer and the second polymer layer.Type: ApplicationFiled: March 7, 2012Publication date: September 13, 2012Applicant: US Seismic Systems, Inc.Inventors: Eric Lee Goldner, James Kengo Andersen, Agop Hygasov Cherbettchian
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Publication number: 20120216615Abstract: A method of measuring acceleration using an optical sensor. In the optical sensor, acceleration, acoustic velocity, or displacement (vibration) causes a corresponding shift in the center wavelength of the sensor output. The sensor can be coupled to a high-speed interferometric interrogator through an unbalanced fiber interferometer. The unbalanced interferometer functions to translate optical wavelength shift into phase shift, which is easily demodulated by the interrogator.Type: ApplicationFiled: May 4, 2012Publication date: August 30, 2012Applicant: US Seismic Systems, Inc.Inventors: James K. Andersen, Eric Lee Goldner, Leo Lam, William Morey, Ira Jeffrey Bush, Gerald Baker, Agop Cherbettchian
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Patent number: 8240207Abstract: An optical sensor in which acceleration, acoustic velocity, or displacement (vibration) causes a corresponding shift in the center wavelength of the sensor output. The sensor can be coupled to a high-speed interferometric interrogator through an unbalanced fiber interferometer. The unbalanced interferometer functions to translate optical wavelength shift into phase shift, which is easily demodulated by the interrogator. A method of measuring acceleration uses the sensor.Type: GrantFiled: July 26, 2011Date of Patent: August 14, 2012Assignee: US Seismic Systems, Inc.Inventors: James K. Andersen, Eric Lee Goldner, Leo Lam, William Morey, Ira Jeffrey Bush, Gerald Baker, Agop Cherbettchian
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Patent number: 8153956Abstract: An interrogator for a plurality of sensor fiber optic gratings. The interrogator includes a broadband optical source; at least one beam splitter directing output of the optical source to the sensor fiber optic gratings; at least one linear filter for converting changes in peak reflection wavelength to changes in intensity; at least one optical receiver; and at least one amplifier associated with each optical receiver. The interrogator also includes, alternatively, a driver/modulator for the optical source providing on/off pulses; an analog integrator following the at least one amplifier; or a mechanism compensating for masking of one sensor fiber optic grating by another.Type: GrantFiled: June 28, 2011Date of Patent: April 10, 2012Assignee: US Seismic Systems, Inc.Inventors: Eric Lee Goldner, Gerald Robert Baker
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Publication number: 20120068057Abstract: An interrogator for a plurality of sensor fiber optic gratings. The interrogator includes a broadband optical source; at least one beam splitter directing output of the optical source to the sensor fiber optic gratings; at least one linear filter for converting changes in peak reflection wavelength to changes in intensity; at least one optical receiver; and at least one amplifier associated with each optical receiver. The interrogator also includes, alternatively, a driver/modulator for the optical source providing on/off pulses; an analog integrator following the at least one amplifier; or a mechanism compensating for masking of one sensor fiber optic grating by another.Type: ApplicationFiled: November 29, 2011Publication date: March 22, 2012Applicant: US SEISMIC SYSTEMS, INC.Inventors: Eric Lee Goldner, Gerald Robert Baker
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Publication number: 20120006109Abstract: A sensing system configured for use in a borehole. The sensing system includes a body portion and a clamp arm engaged with the body portion. The clamp arm is configured to move between a retracted position and an extended position. The sensing system also includes an energy storage element engaged with the body portion. The energy storage element provides energy to move the clamp arm from the retracted position to the extended position. A method of using the sensing system is also provided.Type: ApplicationFiled: July 5, 2011Publication date: January 12, 2012Applicant: US Seismic Systems, Inc.Inventors: James Kengo Andersen, Eric Lee Goldner, Peter Karaiskos, Agop Hygasov Cherbettchian
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Publication number: 20110277548Abstract: An optical sensor in which acceleration, acoustic velocity, or displacement (vibration) causes a corresponding shift in the center wavelength of the sensor output. The sensor can be coupled to a high-speed interferometric interrogator through an unbalanced fiber interferometer. The unbalanced interferometer functions to translate optical wavelength shift into phase shift, which is easily demodulated by the interrogator. A method of measuring acceleration uses the sensor.Type: ApplicationFiled: July 26, 2011Publication date: November 17, 2011Applicant: US Seismic Systems, Inc.Inventors: James K. Andersen, Eric Lee Goldner, Leo Lam, William Morey, Ira Jeffrey Bush, Gerald Baker, Agop Cherbettchian
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Patent number: 6364569Abstract: A system for maintaining a spaced relationship between two energetic sources is disclosed, which system including in a preferred embodiment a clamping means securable to the energetic sources, spacing means disposed between these sources, a pivot mechanism coupled to the spacing means and pivotally engageable to the clamping means, and a shock absorption mechanism coupled to the spacing mechanism and adapted to resiliently deform.Type: GrantFiled: October 28, 1999Date of Patent: April 2, 2002Assignee: Seismic Systems, Inc.Inventor: Adrien P. Pascouet
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Patent number: 5980148Abstract: A system for maintaining a spaced relationship between two energetic sources is disclosed, which system including in a preferred embodiment a clamping mechanism securable to the energetic sources, a spacing system disposed between these sources, a pivot mechanism coupled to the spacing system and pivotally engageable to the clamping mechanism, and a shock absorption system coupled to the spacing mechanism and adapted to resiliently deform.Type: GrantFiled: November 18, 1997Date of Patent: November 9, 1999Assignee: Seismic Systems, Inc.Inventor: Adrien P. Pascouet