Patent application number | Description | Published |
20090246019 | WIND TURBINE MONITORING - A method of detecting the formation of ice on the blades of a wind turbine | 10-01-2009 |
20090324409 | ROTOR BLADE MONITORING - A method of monitoring mechanical characteristics of helicopter rotor blades | 12-31-2009 |
20100004878 | WIND TURBINE MONITORING - A method of monitoring the performance of a wind turbine ( | 01-07-2010 |
20100227551 | Buoy supported underwater radio antenna - The present invention provides a buoy supported antenna for underwater radio communications. The antenna of the present invention comprises an elongate section submerged in water and a feed point for feeding electrical signals to the antenna located on the elongate section, the elongate section is attached to an underwater object at a first end thereof, and during deployment is suspended by a buoy at a second end thereof so that the elongate section is substantially self supporting and vertical in orientation. At least a first portion of the elongate section comprises a flexible wire having an electrically conductive core, which is electrically insulated on an outer surface thereof. During operation the flexible wire radiates electromagnetic signals through the water. | 09-09-2010 |
20100227552 | Underwater radio antenna - The present invention provides an antenna for underwater radio communications. The antenna of the present invention comprises an elongate section submerged in water and a feed point for feeding electrical signals to the antenna located on the elongate section, the elongate section is attached to an underwater object at a first end thereof, and during deployment hangs downwards there from so that said elongate section is substantially vertical in orientation. A first portion of the elongate section comprises a flexible wire having an electrically conductive core, which is electrically insulated on an outer surface thereof. During operation the flexible wire radiates electromagnetic signals through the water. | 09-09-2010 |
20100329864 | PLACEMENT OF STRAIN SENSORS IN WIND TURBINE BLADE - A method of monitoring strain on a wind turbine blade that has several structural components comprises locating at least three strain sensors ( | 12-30-2010 |
20110102767 | LIGHTNING DETECTION - A device for detecting lightning currents in a wind turbine comprises an inductive loop ( | 05-05-2011 |
20110199227 | System for underwater communications comprising fluid modifying means - The present invention provides a system for underwater communications by electromagnetic signals capable of providing a higher data transfer rate for a given range of communications than current prior art systems for underwater communications by electromagnetic signals. The system has an active mode of operation and an inactive mode. In the inactive mode the transmit antenna and the receive antenna are arranged so that the region extending between them is occupied by water. During the active mode, a fluid modifying means provides a reduced conductivity fluid in the region between the transmit antenna and the receive antenna and electromagnetic signals are transmitted from the transmitter to the receiver via the reduced conductivity fluid thereby providing a higher data transfer rate for a given range of communications. | 08-18-2011 |
20110261358 | APPARATUS AND METHOD FOR OPERATING A SPECTROMETER - A method of operating a spectrometer to determine the wavelength of an optical signal, in particular for determining the resonant wavelength of an optical fibre Bragg grating. The spectrometer comprises an array of photosensitive pixels each of which generates an output signal in response to the intensity of light incident on the pixel, and a refractive element arranged to direct light to a particular position in the array depending on the wavelength of the light. The method involves selecting a first group of pixels in the array by reference to an expected wavelength distribution of the optical signal and monitoring the output signals from the first group of pixels. On the basis of the output signals from the first group of pixels a second group of pixels is selected and the wavelength of the optical signal is determined from the output signals of the second group of pixels. The method has the advantage that the wavelength of the optical signal can be determined without scanning every pixel in the array individually. | 10-27-2011 |
20110304218 | Signal coupling system - A signal coupling system for data and/or power signalling in a confined space such as in tubing within a hydrocarbon extraction well. First and second transceivers are arranged with primary and secondary loops lying orthogonal to the ends of the transceivers. The transceivers can be narrower for access to confined spaces. Each loop is housed in a semi-cylindrical housing with a planar face, so providing a cylindrical body when oppositely arranged for the transfer of electromagnetic radiation therebetween. Guiding surfaces are also provided on the housing to assist in bring the coupling system together in the confined space. | 12-15-2011 |
20110308795 | Downhole signal coupling system - A signal coupling system for data and/or power signalling in tubing within a hydrocarbon extraction well. First and second transceivers are arranged with primary and secondary loops lying orthogonal to the ends of the transceivers. The transceivers can be narrower for access downhole. Each loop is housed in a semi-cylindrical housing with a planar face, so providing a cylindrical body when oppositely arranged for the transfer of electromagnetic radiation therebetween. Guiding surfaces are also provided on the housing to assist in bring the coupling system together downhole. The present invention provides reliable real-time data from any location within the wellbore and improves reservoir management, well planning and resource exploitation. | 12-22-2011 |
20110308796 | Pipeline instrumentation and control system - A pipeline instrumentation and control system comprising a first electrically insulated radiating cable for controlled radiation and reception of electromagnetic signaling carried to a second electrically insulated radiating cable wherein first and second electrically insulated radiating cables are axially disposed along a production well pipe and wherein first axially radiating cable comprises a section configured to substantially overlap second radiating cable section and further wherein electrical signals present in first radiating cable section is configured to induce a corresponding signal in said second radiating cable section to facilitate the transfer of electromagnetic radiation therebetween. The present invention provides reliable data communication from any location within the production system and improves reservoir management, well planning and resource exploitation. | 12-22-2011 |
20120071094 | Communication through a composite barrier - The present invention discloses a system that implements data communications through a barrier composed of composite, layered materials. A low frequency electromagnetic signal is used to achieve acceptable channel losses as the signal passes through a composite barrier which may comprise materials with variable conductivity and/or permeability. | 03-22-2012 |
20130335232 | Riser wireless communications system - The present invention discloses a wireless data command, control and instrumentation system for deployment within a subsurface hydrocarbon production system. Low frequency magnetic signalling is used to communicate from a first transceiver deployed inside a riser pipe to a second transceiver positioned outside the riser pipe. In some embodiments data is related to a control centre. Through pipe communications may be bi-directional. | 12-19-2013 |