Patents by Inventor Henning Skjold-Larsen
Henning Skjold-Larsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9151833Abstract: The invention consists of a method which comprises a plurality of steps for determining difference in distance from a reference point to at least two sensor modules 10, 20 that are located under water. The sensor modules 10, 20 comprise means for sending and receiving acoustic signals to each other and to a hydrophone 30 at the reference point. Connected to the hydrophone 30 is a calculating unit 40 that utilises arrival time of the received signals from the sensor modules to determine difference in distance from the sensor modules 10, 20 to the reference point.Type: GrantFiled: September 11, 2012Date of Patent: October 6, 2015Assignee: Scantrawl ASInventor: Henning Skjold-Larsen
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Patent number: 9119383Abstract: The invention consists of a method which comprises a plurality of steps for determining difference in distance from a reference point to at least two sensor modules 10, 20 that are located under water. The sensor modules 10, 20 comprise means for sending and receiving acoustic signals to each other and to a hydrophone 30 at the reference point. Connected to the hydrophone 30 is a calculating unit 40 that utilizes arrival time of the received signals from the sensor modules to determine difference in distance from the sensor modules (10, 20) to the reference point.Type: GrantFiled: January 29, 2010Date of Patent: September 1, 2015Inventor: Henning Skjold-Larsen
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Publication number: 20150138921Abstract: A method for determining distance between a vessel and at least one sensor module arranged on fishing gear being towed by the vessel, the at least one sensor module comprising a transmitter connected to a clock and a receiver connected to a clock being arranged on the vessel, comprises time-synchronising the clocks connected to transmitter and receiver with each other, transmitting a series of signals from the transmitter at a predetermined fixed time interval, receiving in the receiver the signals from the transmitter, and, on the basis of the time of the reception of the signals, calculating the distance between the transmitter and the receiver.Type: ApplicationFiled: May 15, 2013Publication date: May 21, 2015Applicant: Scantrawl ASInventor: Henning Skjold-Larsen
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Publication number: 20150135835Abstract: A system for monitoring a twin trawl being towed by a vessel, the twin trawl comprising two trawl bags, two trawl doors and a clump, comprises at least one sensor arrangement for measuring distance between the doors and between one door and the clump, and a processing unit for computing geometric indicators based on the measured values. By means of the transmission of acoustic signals, the distances between the doors and the doors and the clump can be calculated and compared, and thus provide geometric indicators.Type: ApplicationFiled: May 15, 2013Publication date: May 21, 2015Inventor: Henning Skjold-Larsen
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Publication number: 20150103631Abstract: A trawl sensor device for monitoring trawl doors and the distance of the trawl to the boom during trawling operations comprises at least one acoustic transmitter and receiver, the transmitter being adapted to be positioned such that an acoustic signal is transmitted towards the seabed at a forward-pointing angle, and means for communication between the sensor device and a vessel. The transmitted acoustic signal is reflected from the seabed and is received at this position and the distance between the acoustic transmitter and the seabed is calculated based on the difference in time between transmission and reception of the acoustic signal and the forward-pointing angle.Type: ApplicationFiled: May 15, 2013Publication date: April 16, 2015Applicant: Scantrawl ASInventor: Henning Skjold-Larsen
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Publication number: 20140373425Abstract: A system for control of trawling comprises two or more sensors for measuring trawl parameters during fishing, a processor unit for processing sensor data, a screen for displaying sensor data and/or processed sensor data. A method for control of trawling comprises measuring two or more trawl parameters during fishing, calculating the trawl parameters' deviation from desired value, and displaying the deviation on a screen.Type: ApplicationFiled: September 21, 2012Publication date: December 25, 2014Applicant: Scantrawl ASInventor: Henning Skjold-Larsen
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Publication number: 20140301166Abstract: The invention consists of a method which comprises a plurality of steps for determining difference in distance from a reference point to at least two sensor modules 10, 20 that are located under water. The sensor modules 10, 20 comprise means for sending and receiving acoustic signals to each other and to a hydrophone 30 at the reference point. Connected to the hydrophone 30 is a calculating unit 40 that utilises arrival time of the received signals from the sensor modules to determine difference in distance from the sensor modules 10, 20 to the reference point.Type: ApplicationFiled: September 11, 2012Publication date: October 9, 2014Applicant: SCANTRAWL ASInventor: Henning Skjold-Larsen
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Publication number: 20140230308Abstract: A system and method for sorting fish where the system comprises;—a trawl (2) consisting of at least one trawl bag (3, 3?, 3?), and where the at least one trawl bag (3, 3?, 3?) has an opening which covers a part of an inflow area in the trawl (2),—at least one monitoring device (6) arranged in connection with the inflow area and where signals can be transmitted to a processing unit from the at least one monitoring device (6), and—where a device, based on data from the processing unit, can move the opening in the at least one trawl bag (3, 3?, 3?) to a position where fish flow through the inflow area but on the outside of the at least one trawl bag (3, 3?, 3?).Type: ApplicationFiled: September 21, 2012Publication date: August 21, 2014Applicant: Scantrawl ASInventor: Henning Skjold-Larsen
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Publication number: 20120002507Abstract: The invention consists of a method which comprises a plurality of steps for determining difference in distance from a reference point to at least two sensor modules 10, 20 that are located under water. The sensor modules 10, 20 comprise means for sending and receiving acoustic signals to each other and to a hydrophone 30 at the reference point. Connected to the hydrophone 30 is a calculating unit 40 that utilises arrival time of the received signals from the sensor modules to determine difference in distance from the sensor modules (10, 20) to the reference point.Type: ApplicationFiled: January 29, 2010Publication date: January 5, 2012Inventor: Henning Skjold-Larsen
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Publication number: 20090133313Abstract: The invention relates to a filling ratio indicator for a trawl, Danish seine or a similar towable seine device with a net, comprising a main body arranged to be located on the surface of the net and with attachment devices for attachment to the net. The invention is characterised in that it comprises at least one angle sensor for measuring the angular position of the main body and thereby the angular position of an area of the net in the immediate vicinity of the sensor and a processing unit for providing, based on the said measurement, an indication of the filling ratio of the trawl, Danish seine or seine device. The invention also relates to a method and a system for providing an indication of the filling ratio of a seine device.Type: ApplicationFiled: August 8, 2007Publication date: May 28, 2009Inventor: Henning Skjold-Larsen
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Patent number: 7405999Abstract: The invention relates to a module (100) which is attached to a trawl, and which at least comprises measuring sensors (330) and a power supply unit. (320) The sensors are basically inactive, but can be activated as the need arises to measure different parameters. In an embodiment the module also includes a power-generating movement device connected to a charging device that can supply energy to the power supply unit. The module may also include communication means. In an alternative embodiment the module ma include a trawl door that can drag the drawl in a desired direction. Several modules may be (combined to form a system that both measures different parameters and positions the trawl in order to achieve an optimal trawling process.Type: GrantFiled: December 8, 2004Date of Patent: July 29, 2008Inventor: Henning Skjold-Larsen
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Publication number: 20070089349Abstract: The invention relates to a module (100) which is attached to a trawl, and which at least comprises measuring sensors (330) and a power supply unit. (320) The sensors are basically inactive, but can be activated as the need arises to measure different parameters. In an embodiment the module also includes a power-generating movement device connected to a charging device that can supply energy to the power supply unit. The module may also include communication means. In an alternative embodiment the module ma include a trawl door that can drag the drawl in a desired direction. Several modules may be (combined to form a system that both measures different parameters and positions the trawl in order to achieve an optimal trawling process.Type: ApplicationFiled: December 8, 2004Publication date: April 26, 2007Inventor: Henning Skjold-Larsen