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公开(公告)号：EP4365626A1
公开(公告)日：2024-05-08
申请号：EP23206748.8
申请日：2023-10-30
Applicant: ROSEMOUNT AEROSPACE INC.
Inventor： LoPresto, Vincent R. , ANDERSON, Kaare Josef , RAY, Mark D.
Abstract: In accordance with at least one aspect of this disclosure, a method of detecting a fault in a plurality of optical detectors (102, 202) includes receiving a first return beam from a first optical detector interrogation beam to generate a first optical signal indicative of an atmospheric condition from a first location on board the aircraft and receiving a second return beam from a second optical detector interrogation beam to generate a second optical signal indicative of the atmospheric condition from a second location on board the aircraft. The method includes, comparing each of the first and second optical signals with a baseline value to determine whether there is a fault in at least one optical detector of the plurality of optical detectors (102, 202).
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公开(公告)号：EP4166997A1
公开(公告)日：2023-04-19
申请号：EP22200843.5
申请日：2022-10-11
Applicant: ROSEMOUNT AEROSPACE INC.
Inventor： RAY, Mark , RAMTHUN, Kent Allan , ANDERSON, Kaare Josef
Abstract: An optical sensor (10) for an aircraft includes two detectors (14, 16), a light source (12), and a controller (100). The detectors (14, 16) are oriented along detector paths and have tilt angles and fields of view. The detectors (14, 16) 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 (14, 16) is oriented in an opposite direction within a plane containing a light source path and the detector paths. The light source (12) 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 (100) 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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23.发明公开
公开(公告)号：EP4166926A1
公开(公告)日：2023-04-19
申请号：EP22201447.4
申请日：2022-10-13
Applicant: ROSEMOUNT AEROSPACE INC.
Inventor： ANDERSON, Kaare Josef , RAY, Mark , Ramthun, Kent Allan
Abstract: A method of operating an optical icing conditions sensor includes transmitting a first light beam with a first transmitter (16) and a second light beam with a second transmitter (18), thereby illuminating two illumination volumes. A first receiver (20) receives the first light beam. A second receiver (22) receives the second light beam. A controller (100) measures the intensity of light received by the first and second receivers. The controller compares the intensities to threshold values and determines if either intensity is greater than the threshold values. The controller determines a cloud is present if either intensity is greater than the threshold values. The controller calculates a ratio of the intensities if a cloud is present. The controller determines, using the ratio, whether the cloud contains liquid water droplets, ice crystals, or a mixture of liquid water droplets and ice crystals.
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24.发明公开
公开(公告)号：EP4166925A1
公开(公告)日：2023-04-19
申请号：EP22201347.6
申请日：2022-10-13
Applicant: ROSEMOUNT AEROSPACE INC.
Inventor： ANDERSON, Kaare Josef , RAY, Mark , RAMTHUN, Kent Allan , MILLER, Mark Sherwood
Abstract: A method of operating an optical icing conditions sensor includes transmitting (402), with a transmitter, a light beam and thereby illuminating an illumination volume. A receiver array receives (404) light over a range of receiving angles. The receiver array is configured to receive light having the wavelength over a receiver array field of view which overlaps with the illumination volume. A controller measures (406) an intensity of light received by the receiver array. The controller determines (410) that a cloud is present if the intensity is greater than a threshold value. The controller calculates (412) scattering profile data of the light received by the receiver array if a cloud is determined to be present, which includes an angle of a scattering intensity peak within the range of receiving angles and a breadth of the scattering intensity peak. The controller (414) estimates a representative droplet size within the cloud using the scattering profile data.
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Patent Agency Ranking
公开(公告)号：EP3882655A1
公开(公告)日：2021-09-22
申请号：EP21150769.4
申请日：2021-01-08
Applicant: ROSEMOUNT AEROSPACE INC.
Inventor： RAY, Mark , ANDERSON, Kaare Josef
Abstract: A system (10) 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 (20); at least one light detector having a detection field of view (22,24) 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：EP3567403A1
公开(公告)日：2019-11-13
申请号：EP19172303.0
申请日：2019-05-02
Applicant: ROSEMOUNT AEROSPACE INC.
Inventor： RAY, Mark , ANDERSON, Kaare Josef
Abstract: Apparatus and associated methods relate to determining a size and/or density of Super-cooled Large Droplets (SLDs) in a cloud atmosphere (12) by simultaneously projecting both a collimated pulsed beam (16) into a narrow-field projection volume (20) and a divergent pulsed beam (18) into a wide-field projection volume (22) of the cloud atmosphere (12), and then detecting both the collimated and divergent pulsed beams (16, 18) backscattered from within a detection volume (24) of the cloud atmosphere (12). Projection and detection are configured such that the detection volume (24) intersects both the narrow-field and the wide-field projection volumes (20, 22) defining narrow-field/detection and wide-field/reception detection volumes, respectively. A distance between the narrow-field/detection intersecting volume (58) and the generating and detecting apparatus is greater than a predetermined distance, thereby avoid detection of light backscattered from within the atmosphere located in a disturbance region of the cloud atmosphere (12) within the predetermined distance from the apparatus.
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公开(公告)号：EP3285090B1
公开(公告)日：2019-04-17
申请号：EP17186894.6
申请日：2017-08-18
Applicant: Rosemount Aerospace Inc.
Inventor： RAY, Mark , ANDERSON, Kaare Josef , MILLER, Mark Sherwood
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公开(公告)号：EP3351966A2
公开(公告)日：2018-07-25
申请号：EP18152500.7
申请日：2018-01-19
Applicant: Rosemount Aerospace Inc.
Inventor： RAY, Mark , ANDERSON, Kaare Josef
Abstract: Apparatus and associated methods relate to determining a size and/or density of Super-cooled Large Droplets (SLDs) in a cloud atmosphere by comparing detected optical signals reflected from small and large sampling volumes of a cloud atmosphere. In some embodiments, an optical pulse is generated and divergently projected from a first optical fiber. A collimating lens is aligned within the divergently projected optical pulse collimating a portion thereof. The collimated and uncollimated portions of the optical pulse are projected into the small and large sampling volumes of the cloud atmosphere, respectively. The ratio of the collimated to the uncollimated portions can be optically controlled. Signals corresponding to optical pulses having different collimated/uncollimated ratios are backscattered by the cloud atmosphere, detected and compared to one another. A processor is configured to calculate, based on scintillation spike differences between the optical pulses of different collimated/uncollimated ratios, a size and/or density of SLDs.
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公开(公告)号：EP3273270A1
公开(公告)日：2018-01-24
申请号：EP17182590.4
申请日：2017-07-21
Applicant: Rosemount Aerospace Inc.
Inventor： RAY, Mark , ANDERSON, Kaare Josef
CPC classification number: G01N15/0211 , G01N2015/0046 , G01S7/4812 , G01S7/499 , G01S17/95 , G01W1/00 , Y02A90/19
Abstract: Apparatus (14) and associated methods relate to determining sizes of water particles in a cloud atmosphere based on a detected portion of signals generated from a single monochromatic source (22) and backscattered by water particles in a cloud atmosphere. A backscatter coefficient and an optical extinction coefficient are calculated, based on the detected portion of signals generated from the monochromatic source and backscattered by water particles in the cloud atmosphere. A LIDAR ratio - a ratio of the optical extinction coefficient to the backscatter coefficient, is calculated. Sizes of water particles in the cloud atmosphere are estimated based on the LIDAR ratio. An output signal indicative of the estimated sizes of water particles in the cloud atmosphere is generated. Estimating sizes of water particles using signals from a single monochromatic source advantageously can alert a pilot of an aircraft of cloud conditions, without requiring multi-chromatic sources.
Abstract translation: 装置（14）和相关方法涉及基于从单个单色源（22）产生的信号的检测部分并在云气氛中由水粒子反向散射来确定云气氛中的水粒子的尺寸。 基于从单色源产生的信号的检测部分并在云气氛中由水粒子反向散射来计算反向散射系数和消光系数。 计算LIDAR比率 - 消光系数与后向散射系数的比率。 根据LIDAR比估计云气氛中水粒子的大小。 产生指示云气氛中的水粒子的估计尺寸的输出信号。 使用来自单个单色源的信号来估计水粒子的尺寸有利地可以向飞行员的飞行员警告云状况，而不需要多色源。
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