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1. 发明申请

US20220278637A1 ESTIMATION OF ROTOR OPERATIONAL CHARACTERISTICS FOR A WIND TURBINE 有权
公开(公告)号：US20220278637A1
公开(公告)日：2022-09-01
申请号：US17631782
申请日：2020-07-22
申请人： Siemens Gamesa Renewable Energy A/S
发明人： Jared Frank , Kirk Pierce
IPC分类号： H02P23/14 , G01D5/245 , G01P3/489 , G01P13/04 , G01D18/00 , F03D17/00
摘要： Provided is a method of estimation of rotor operational characteristics, in particular rotor speed, rotor azimuth and rotation direction, of a rotating rotor of a wind turbine, the method including: measuring pulse rising edge time and pulse falling edge time of pulses generated by each of multiple proximity sensors originating from multiple detection targets arranged on the rotor; estimating values of parameters associated with the sensors and/or targets, in particular parameters associated with the positioning and/or detection range of at least one sensor and/or the parameters associated with the positioning and/or size of at least one target, based on the measured pulse rising edge times and pulse falling edge times; estimating rotor operational characteristics, in particular a rotor speed and/or a rotor azimuth and/or a rotation direction, based on the measured pulse rising and/or falling edge times and/or the estimated values of parameters associated with the sensors and/or targets.

2. 发明授权

US11366057B2 Air quality monitoring system and method 有权
公开(公告)号：US11366057B2
公开(公告)日：2022-06-21
申请号：US17541693
申请日：2021-12-03
申请人： Project Canary, PBC
发明人： Anna Ailene Scott , Nasr E. Alkadi , Yan Azdoud , Nate Eichenlaub , William J. Foiles , Christopher Daniel Kelley , Shyla Kupis
IPC分类号： G01N21/3504 , G01N33/00 , G01P13/04
摘要： In one illustrative configuration, an air quality monitoring system may enable wide-scale deployment of multiple air quality monitors with high-confidence and actionable data is provided. Further, the air quality monitoring system may enable identifying a target emission from a plurality of potential sources at a site based on simulating plume models. The simulation of plume models may take into consideration various simulation parameters including wind speed and direction. Further, methods of determining a plume flux of a plume of emissions at a site, and methods of transmitting data from an air quality monitor are disclosed.

3. 发明申请

US20210247419A1 Ship Real Wind Measuring Device Calibration Method 有权
公开(公告)号：US20210247419A1
公开(公告)日：2021-08-12
申请号：US17057019
申请日：2020-05-28
申请人： DALIAN UNIVERSITY OF TECHNOLOGY
发明人： Dazhi WANG , Xiaoyan GUO , Yuanda CI , Feng CAI , Xiao WANG , Shaoyan ZUO
IPC分类号： G01P21/00 , B63B79/30 , B63B79/15 , G01P13/04 , G01M9/02 , G06N3/02
摘要： The present invention belongs to the field of ship engineering, and provides a ship real wind measuring device calibration method. In this method a ship sway simulator is build using a 2-axis ganged platform, natural wind is simulating generated using a wind tunnel flow field. Then the ship sway simulator is controlled to simulate the ship spatial motion under the disturbance of stormy waves. Furthermore, the data of the wind speed and direction is obtained under different sway angles and speeds. So that the database of wind direction and speed measurement, attitude measurement, actual wind direction and speed measurement is formed. Subsequently, a calibration model based on BP neural network is constructed using this database, a ship real wind direction and speed calibration algorithm is formed, which can calibrate a ship real wind measuring device.

4. 发明授权

US11041876B2 System for measuring the distance of an obstacle using optical flow 有权
公开(公告)号：US11041876B2
公开(公告)日：2021-06-22
申请号：US16339030
申请日：2017-10-05
申请人： UNIVERSITÉ D'AIX-MARSEILLE , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
发明人： Stephane Marie Vincent Viollet , Fabien Thierry Alain Colonnier , Erik Vanhoutte
IPC分类号： G01P13/04 , G01F1/32 , G05D1/08
摘要： A system for measuring the distance of an obstacle, in which an optical flow is measured radially while rotating along a circle in a plane intersecting the obstacle; and the distance of the obstacle is determined according to the amplitude of the optical flow, the radius of the circle, and the speed of rotation.

5. 发明授权

US10955432B2 Centrifugal separator having a system for detecting rotation 有权
公开(公告)号：US10955432B2
公开(公告)日：2021-03-23
申请号：US15561848
申请日：2016-03-21
申请人： ALFA LAVAL CORPORATE AB
发明人： Per Karlsson
IPC分类号： G01P3/487 , G01P13/04 , G01P3/488 , G01P3/481 , B04B5/12 , B04B9/10 , B04B11/02
摘要： A centrifugal separator includes a frame and a drive member configured to rotate a rotating part in relation to the frame around an axis of rotation. The rotating part includes a spindle and a centrifuge rotor enclosing a separation space. The rotating part is supported by the frame by at least one bearing device. The centrifugal separator further includes a system for detecting rotation of the rotating part. The system includes at least one first type of sector each occupying a first length of the perimeter of a member arranged for rotation with the rotating part, and at least one second type of sector each occupying a second length of the perimeter of the member arranged for rotation. The at least one second type of sector is spaced apart from the at least one first type of sector. The second length is different compared to the first length. The at least one first and second types of sectors are irregularly spaced around the perimeter of the member arranged for rotation. The system further includes an inductive sensor arranged to detect the at least one first and second types of sectors and give rise to a binary pulse sequence upon rotation of the member arranged for rotation. The temporal widths of the binary pulses correspond to the lengths of the at least one first and the at least one second types of sectors, respectively.

6. 发明授权

US10859409B2 Rotation parameter detection method, encoder, laser radar and unmanned aerial vehicle 有权
公开(公告)号：US10859409B2
公开(公告)日：2020-12-08
申请号：US16742171
申请日：2020-01-14
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： Wanqi Liu , Qiu Lan , Changxing Zhou
IPC分类号： G01D5/347 , G01P13/04 , G01P3/08 , G01P3/38
摘要： An encoder includes a code disc and a processor communicatively coupled with the code disc. The code disc is configured to rotate along with a rotating object and includes a plurality of fan teeth extending radially. Each of the fan teeth includes a first line segment edge, a second line segment edge, and an arc edge along a circumference of the code disc and connecting the first line segment edge and the second line segment edge. The first line segment edges of the fan teeth are arranged at the code disc with equal intervals. A length of the arc edge of one of the fan teeth is different from lengths of the arc edges of other ones of the fan teeth, and the lengths of the arc edges of the other ones of the fan teeth equal each other. The processor is configured to detect a rotation of the code disc to obtain a detection signal, and obtain a rotation parameter of the rotating object based on the detection signal. The rotation parameter includes at least one of a rotation direction, a rotation speed, or a mechanical zero position.

7. 发明授权

US10807735B2 Methods and apparatus to reduce static pressure measuring error 有权
公开(公告)号：US10807735B2
公开(公告)日：2020-10-20
申请号：US15786341
申请日：2017-10-17
申请人： The Boeing Company
发明人： Chen Chuck , Sho Sato
IPC分类号： B64D43/02 , G01L19/06 , G01L19/00 , G01P5/16 , G01K13/02 , G01P13/04
摘要： Method and apparatus to reduce static pressure measuring error are disclosed. An example apparatus to measure static pressure includes a static pressure tap including a channel to define an external opening of a vehicle, where the channel extends through a pressure chamber to a pressure sensor disposed within, and a porous material disposed proximate the opening to reduce error in static pressure measurements.

8. 发明申请

US20200284819A1 SYSTEMS AND METHODS FOR DETERMINING WIND VELOCITY 审中-公开
公开(公告)号：US20200284819A1
公开(公告)日：2020-09-10
申请号：US16295094
申请日：2019-03-07
申请人： BNSF RAILWAY COMPANY , AIRFLOW SCIENCES CORPORATION
发明人： Brian J. Dumont , James Paul , Matthew Fleming , Paul Harris , Corey D. Wills , Corey T. Pasta , Paul K. Gabler , Dennis W. Morgart
IPC分类号： G01P5/24 , G01P5/06 , G01P13/04 , B61K13/00
摘要： In one embodiment, a system includes a vehicle, one or more probes coupled to the vehicle, and a controller. The vehicle is operable to traverse a distance. The one or more probes are operable to measure wind pressure and generate one or more wind pressure measurements. The controller is operable to receive the one or more wind pressure measurements from the one or more probes, determine a wind angle relative to the vehicle using the one or more wind pressure measurements, and determine a wind speed relative to the vehicle using the one or more wind pressure measurements and the wind angle.

9. 发明申请

US20200182899A1 ROTATIONAL SPEED SENSOR ARRANGEMENT 审中-公开
公开(公告)号：US20200182899A1
公开(公告)日：2020-06-11
申请号：US16792145
申请日：2020-02-14
申请人： Volkswagen Aktiengesellschaft
发明人： Jens FRICKE , Julian HERRMANN , Michael BOESEKE , Ines MATTEG
IPC分类号： G01P3/488 , G01D5/14 , G01P13/04
摘要： A rotational speed sensor arrangement is provided that includes a transmitter wheel, which has signal markers that are spaced apart from one another; a sensor with at least two Hall sensor elements that form a differential Hall sensor and that each output a Hall signal as a function of the position and/or motion of the signal markers; and a signal circuit that determines an output signal based on the Hall signal, and defines a rotational position of the transmitter wheel based on the output signal, wherein the signal markers have radially extending tooth elements with two switching flanks, and the switching flanks converge in a switching edge. A drive shaft arrangement, an internal combustion engine, and a motor vehicle are also provided.

10. 发明授权

US10577001B2 Transmitter device, sensor device and method for sensing a magnetic field change 有权
公开(公告)号：US10577001B2
公开(公告)日：2020-03-03
申请号：US16312452
申请日：2017-06-01
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Rainer Freise
IPC分类号： B61L1/16 , G01P13/04 , B61L1/08
摘要： A transmitter device for a sensor device detects a magnetic field change caused by an object approaching or moving past the sensor device, in particular by a wheel of a rail vehicle. The transmitter device has at least two alternating-current-fed transmitter oscillating circuits. In order to implement error disclosure of the sensor device in a particularly simple manner, the at least two transmitter oscillating circuits are formed in such a way that the resonance frequencies thereof are different from each other. A sensor device and a method for detecting a magnetic field change are also provided.

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