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公开(公告)号：US11137519B2
公开(公告)日：2021-10-05
申请号：US15216398
申请日：2016-07-21
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Kaare Josef Anderson
Abstract: Apparatus and associated methods relate to sampling a large volume of a cloud atmosphere so as to obtain a large signal response from even a sparse distribution of water droplets in the cloud atmosphere. Such a volume can be probed by projecting an uncollimated optical beam into the cloud atmosphere and sampling the signal backscattered from the water droplets located within the probed volume. The uncollimated optical beam can be generated by projecting a diverging pulse of light energy from a polished end of a first optical fiber. A second optical fiber can be used to receive the optical signal backscattered from the cloud atmosphere. The second optical fiber can also have substantially the same field of view as the first optical fiber, so as to receive signals from a volume of the cloud atmosphere that is substantially commensurate with the probed volume.
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公开(公告)号：US20210293659A1
公开(公告)日：2021-09-23
申请号：US16823026
申请日：2020-03-18
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Kaare Josef Anderson
Abstract: A system for determining parameters of a cloud atmosphere within a wind tunnel. The system includes: a light projector configured to project a pulse of light energy into a projection field of view; at least one light detector having a detection field of view that forms a range-limited intersection with the projection field of view, the range-limited intersection having a maximum sampling range so as to exclude wall structures of the wind tunnel, wherein the at least one light detector is configured to detect a backscattered portion of the projected pulse of light energy backscattered from within the range-limited intersection; and a cloud parameter calculator configured to determine parameters of the cloud atmosphere based on the backscattered portions detected.
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公开(公告)号：US20210055422A1
公开(公告)日：2021-02-25
申请号：US16549975
申请日：2019-08-23
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Jennifer M. Alexander , Kaare Josef Anderson , Darren G. Jackson
Abstract: Apparatus and associated methods relate to determining an effective size, quantity, shape, and type of water particles in a cloud atmosphere based on differences in amplitudes of optical signals backscattered at different backscattering angles. Off-axis backscattering—backscattering at angles other than 180 degrees—is affected by the effective size, quantity, shape, and type of water droplets. Detected amplitudes of optical signals that are backscattered at different angles are used to indicate the effective size, quantity, shape, and type of water particles in the cloud atmosphere. In some embodiments, optical emitters and detectors are configured to measure amplitudes of optical signals backscattered at backscattering angles of both on-axis—180 degrees—and off-axis varieties.
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公开(公告)号：US10656084B2
公开(公告)日：2020-05-19
申请号：US16008833
申请日：2018-06-14
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Kaare Josef Anderson
Abstract: Apparatus and associated methods relate to reliably determining both size of large water droplets and density of small water droplets in a multi-modal cloud atmosphere. A pulsed beam of light is projected into the cloud atmosphere and a receiver receives a reflected portion of the projected pulsed beam backscattered by the cloud atmosphere. The received reflected portion is split into first and second parts. First and second parts are directed to first and second detectors, each having a different gain. A ratio of the gains of the first and second detector is greater than 3:1, thereby providing a low-gain detector for producing unsaturated signals indicative of scintillation spike reflection by large water particles and a simultaneous high-gain detector for producing signals indicative of range-resolved reflections by numerous small water particles.
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公开(公告)号：US20190383735A1
公开(公告)日：2019-12-19
申请号：US16008833
申请日：2018-06-14
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Kaare Josef Anderson
Abstract: Apparatus and associated methods relate to reliably determining both size of large water droplets and density of small water droplets in a multi-modal cloud atmosphere. A pulsed beam of light is projected into the cloud atmosphere and a receiver receives a reflected portion of the projected pulsed beam backscattered by the cloud atmosphere. The received reflected portion is split into first and second parts. First and second parts are directed to first and second detectors, each having a different gain. A ratio of the gains of the first and second detector is greater than 3:1, thereby providing a low-gain detector for producing unsaturated signals indicative of scintillation spike reflection by large water particles and a simultaneous high-gain detector for producing signals indicative of range-resolved reflections by numerous small water particles.
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Patent Agency Ranking
公开(公告)号：US12025982B2
公开(公告)日：2024-07-02
申请号：US17503731
申请日：2021-10-18
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Kent Allan Ramthun , Kaare Josef Anderson
CPC classification number: G05D1/0094 , G02B30/25 , G06V20/17
Abstract: An optical sensor for an aircraft includes two detectors, a light source, and a controller. The detectors are oriented along detector paths and have tilt angles and fields of view. The detectors are configured to detect light reflected from an illumination volume and to generate detector signals that correspond to intensities of detected light. The tilt angles are equal such that each detector is oriented in an opposite direction within a plane containing a light source path and the detector paths. The light source is oriented along the light source path and is configured to illuminate the illumination volume which overlaps with the fields of view within a predetermined distance range. The controller is configured to receive the detector signals, detect whether a cloud is present based upon the detector signals, determine a cloud phase, and calculate a density of the detected cloud.
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公开(公告)号：US11914003B2
公开(公告)日：2024-02-27
申请号：US17218066
申请日：2021-03-30
Applicant: Rosemount Aerospace Inc.
Inventor： Kaare Josef Anderson , Magdi A Essawy
Abstract: Apparatus and associated methods relate to predicting failure and/or estimating remaining useful life of an air-data-probe heater. Failure is predicted or useful life is estimated based on an electrical metric of the electrical operating power provided to a resistive heating element of the air-data-probe heater. The electrical metric of the air data probe heater is one or more of: i) phase relation between voltage across the resistive heating element and leakage current, which is conducted from the resistive heating element to a conductive sheath surrounding the resistive heating element; ii) a time-domain profile of leakage current through the heating element insulation during a full power cycle; and/or iii) high-frequency components of the electrical current conducted by the resistive heating element and/or the voltage across the resistive heating element.
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公开(公告)号：US11885718B2
公开(公告)日：2024-01-30
申请号：US16823026
申请日：2020-03-18
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Kaare Josef Anderson
CPC classification number: G01M9/04 , G01N21/474 , G01N21/532 , G01N2021/4709 , G01N2021/4742
Abstract: A system for determining parameters of a cloud atmosphere within a wind tunnel. The system includes: a light projector configured to project a pulse of light energy into a projection field of view; at least one light detector having a detection field of view that forms a range-limited intersection with the projection field of view, the range-limited intersection having a maximum sampling range so as to exclude wall structures of the wind tunnel, wherein the at least one light detector is configured to detect a backscattered portion of the projected pulse of light energy backscattered from within the range-limited intersection; and a cloud parameter calculator configured to determine parameters of the cloud atmosphere based on the backscattered portions detected.
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公开(公告)号：US11851193B2
公开(公告)日：2023-12-26
申请号：US16953807
申请日：2020-11-20
Applicant: Rosemount Aerospace Inc.
Inventor： Jaime Sly , Brian Daniel Matheis , Kaare Josef Anderson
Abstract: An optical ice detector and airspeed probe includes an ice detection module and an airspeed module. The ice detection module detects the presence or absence of ice, water, or ice and water particles, and the airspeed module determines a line-of-sight speed along a directional vector, each based on backscatter light returns emitted from a common collimated light source. An electronics module determines an airspeed of an aircraft based on the line-of-sight speed determined by the airspeed module and at least one aircraft parameter received from the air data system.
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公开(公告)号：US20230120329A1
公开(公告)日：2023-04-20
申请号：US17503731
申请日：2021-10-18
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Kent Allan Ramthun , Kaare Josef Anderson
Abstract: An optical sensor for an aircraft includes two detectors, a light source, and a controller. The detectors are oriented along detector paths and have tilt angles and fields of view. The detectors are configured to detect light reflected from an illumination volume and to generate detector signals that correspond to intensities of detected light. The tilt angles are equal such that each detector is oriented in an opposite direction within a plane containing a light source path and the detector paths. The light source is oriented along the light source path and is configured to illuminate the illumination volume which overlaps with the fields of view within a predetermined distance range. The controller is configured to receive the detector signals, detect whether a cloud is present based upon the detector signals, determine a cloud phase, and calculate a density of the detected cloud.
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