公开(公告)号：US11408906B2

公开(公告)日：2022-08-09

申请号：US16934446

申请日：2020-07-21

申请人： 1323079 Alberta Ltd.

发明人： Chris Morton ,  Kelly Zwarych

IPC分类号： G01P5/16 ,  G01M9/06 ,  G01P5/165 ,  G01P21/02

摘要： Methods and apparatus for monitoring fluid-dynamic drag on an object, such as a bicycle, ground vehicle, watercraft, aircraft, or portion of a wind turbine are provided. An array of sensors obtain sensor readings for example indicating: power input for propelling the object; air speed and direction relative to motion of the object; and ground speed of the object. Sensor readings may also indicate: temperature; elevation and humidity for providing a measurement of air density. Sensor readings may also indicate inclination angle and forward acceleration. Processing circuitry determines a coefficient of drag area based on the sensor readings and optionally one or more stored parameters, according to a predetermined relationship. A pitot tube based apparatus for measuring fluid speed and direction is also provided. Methods for dynamic in situ calibration of the pitot tube apparatus, and of adjusting correction factors applied to correct measurement errors of this apparatus are also provided.

公开(公告)号：US20190301969A1

公开(公告)日：2019-10-03

申请号：US16302768

申请日：2017-05-18

申请人： 1323079 Alberta Ltd.

发明人： Chris Morton ,  Kelly Zwarych

IPC分类号： G01M9/06 ,  G01L5/13 ,  G01L3/24 ,  G01P5/165 ,  G01N19/02 ,  G01P21/02 ,  G07C5/08

摘要： Methods and apparatus for monitoring fluid-dynamic drag on an object, such as a bicycle, ground vehicle, watercraft, aircraft, or portion of a wind turbine are provided. An array of sensors obtain sensor readings for example indicating: power input for propelling the object; air speed and direction relative to motion of the object; and ground speed of the object. Sensor readings may also indicate: temperature; elevation and humidity for providing a measurement of air density. Sensor readings may also indicate inclination angle and forward acceleration. Processing circuitry determines a coefficient of drag area based on the sensor readings and optionally one or more stored parameters, according to a predetermined relationship. A pitot tube based apparatus for measuring fluid speed and direction is also provided. Methods for dynamic in situ calibration of the pitot tube apparatus, and of adjusting correction factors applied to correct measurement errors of this apparatus are also provided.

公开(公告)号：US20200348331A1

公开(公告)日：2020-11-05

申请号：US16934446

申请日：2020-07-21

申请人： 1323079 Alberta Ltd.

发明人： Chris Morton ,  Kelly Zwarych

IPC分类号： G01P5/16 ,  G01M9/06 ,  G01P5/165 ,  G01P21/02

摘要： Methods and apparatus for monitoring fluid-dynamic drag on an object, such as a bicycle, ground vehicle, watercraft, aircraft, or portion of a wind turbine are provided. An array of sensors obtain sensor readings for example indicating: power input for propelling the object; air speed and direction relative to motion of the object; and ground speed of the object. Sensor readings may also indicate: temperature; elevation and humidity for providing a measurement of air density. Sensor readings may also indicate inclination angle and forward acceleration. Processing circuitry determines a coefficient of drag area based on the sensor readings and optionally one or more stored parameters, according to a predetermined relationship. A pitot tube based apparatus for measuring fluid speed and direction is also provided. Methods for dynamic in situ calibration of the pitot tube apparatus, and of adjusting correction factors applied to correct measurement errors of this apparatus are also provided.

公开(公告)号：US10739370B2

公开(公告)日：2020-08-11

申请号：US16302768

申请日：2017-05-18

申请人： 1323079 Alberta Ltd.

发明人： Chris Morton ,  Kelly Zwarych

IPC分类号： G01P5/16 ,  G01M9/06 ,  G01P5/165 ,  G01P21/02

摘要： Methods and apparatus for monitoring fluid-dynamic drag on an object, such as a bicycle, ground vehicle, watercraft, aircraft, or portion of a wind turbine are provided. An array of sensors obtain sensor readings for example indicating: power input for propelling the object; air speed and direction relative to motion of the object; and ground speed of the object. Sensor readings may also indicate: temperature; elevation and humidity for providing a measurement of air density. Sensor readings may also indicate inclination angle and forward acceleration. Processing circuitry determines a coefficient of drag area based on the sensor readings and optionally one or more stored parameters, according to a predetermined relationship. A pitot tube based apparatus for measuring fluid speed and direction is also provided. Methods for dynamic in situ calibration of the pitot tube apparatus, and of adjusting correction factors applied to correct measurement errors of this apparatus are also provided.