US Seismic Systems, Inc.

Avalon Sciences Limited

US Sensor Systems, Inc.

Pacific Western Bank

Other

Gerald Robert Baker

Eric Lee Goldner

Agop Hygasov Cherbettchian

James Kengo Andersen

David T Beatson

Jeffrey Carl Buchholz

Ira Jeffrey Bush

Leo K Lam

William Morey

Vernon D Lepore

James Kengo Anderson

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.

Fiber optic personnel safety systems and methods of using the same

A fiber optic transducer is provided. The fiber optic transducer includes a fixed portion configured to be secured to a body of interest, a moveable portion having a range of motion with respect to the fixed portion, a spring positioned between the fixed portion and the moveable portion, and a length of fiber wound between the fixed portion and the moveable portion. The length of fiber spans the spring. The fiber optic transducer also includes a mass engaged with the moveable portion. In one disclosed aspect of the transducer, the mass envelopes the moveable portion.

Fiber optic transducers, fiber optic accelerometers and fiber optic sensing systems

An optical detection system. The optical detection system includes a host node having (a) an optical source for generating optical signals, and (b) an optical receiver. The optical detection 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.

Optical detection systems and methods of using the same

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.

Fiber optic security systems including a local control node and a remote control unit, and methods of using the same

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. The optical detection system also includes a plurality of fiber optic sensors local to the pipeline 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.

Fiber optic pipeline monitoring systems and methods of using the same

A fiber optic microseismic sensing system is provided. The system includes a plurality of nodes, each of the nodes including a surface portion, an underground portion, and an optical cable extending between the surface portion and the underground portion. The surface portion includes (1) an optical source for transmitting an optical signal along the optical cable to the underground portion, and (2) an optical receiver for receiving a return optical signal propagating along the optical cable from the underground portion. The underground portion includes at least one transducer, each of the at least one transducer including (1) a fixed portion configured to be secured to a body of interest, (2) a moveable portion having a range of motion with respect to the fixed portion, (3) a spring positioned between the fixed portion and the moveable portion, and (4) a mass engaged with the moveable portion. The optical cable includes a length of fiber wound between the fixed portion and the moveable portion of each of the at least one transducer, the length of fiber spanning the spring. In one disclosed aspect of the transducer, the mass envelopes the moveable portion.

Fiber optic microseismic sensing systems

Fiber optic security systems and methods of using the same

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.

Interrogator having an analog interrogator following at least one amplifier

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.

Growing community of inventors

West Hills, CA, United States of America

Gerald Robert Baker