UNMANNED AERIAL VEHICLE AND METHODS FOR CONTROLLING SAME

• US 20140316616A1
• Filed: 03/11/2014
• Published: 10/23/2014
• Est. Priority Date: 03/11/2013
• Status: Active Grant

• Current Assignee: Airphrame, Inc.
• Original Assignee: Airphrame, Inc.
• Inventors: Kugelmass, Bret
• Granted Patent: US 9,075,415 B2
• Time in Patent Office: Days
• US Class Current: 701/8
• CPC Class Codes: B64C 39/024 of the remote controlled vehicle type, i.e. RPV
• CPC Class Codes: B64U 10/25 Fixed-wing aircraft VTOL aircraft B64U10/20
• CPC Class Codes: B64U 10/80 UAVs characterised by their small size, e.g. micro air vehicles [MAV]
• CPC Class Codes: B64U 20/65 Composite materials
• CPC Class Codes: B64U 2101/30 for imaging, photography or videography
• CPC Class Codes: B64U 2101/32 for cartography or topography
• CPC Class Codes: B64U 2201/10 autonomous, i.e. by navigating independently from ground or air stations, e.g. by using inertial navigation systems [INS]
• CPC Class Codes: B64U 2201/104 using satellite radio beacon positioning systems, e.g. GPS
• CPC Class Codes: B64U 50/13 using external fans or propellers
• CPC Class Codes: B64U 50/19 using electrically powered motors
• CPC Class Codes: G05D 1/0088 characterized by the autonomous decision making process, e.g. artificial intelligence, predefined behaviours using knowledge based models G06N5/00
• CPC Class Codes: G05D 1/0094 involving pointing a payload, e.g. camera, weapon, sensor, towards a fixed or moving target
• CPC Class Codes: G05D 1/042 specially adapted for aircraft
• CPC Class Codes: G05D 1/104 involving a plurality of aircrafts, e.g. formation flying traffic control systems for aircraft G08G5/00
• CPC Class Codes: G06T 1/0014 Image feed-back for automatic industrial control, e.g. robot with camera robots B25J19/023
• CPC Class Codes: G06T 11/206 Drawing of charts or graphs
• CPC Class Codes: G06T 11/60 Editing figures and text; Combining figures or text
• CPC Class Codes: G08G 5/0013 with a ground station
• CPC Class Codes: G08G 5/0039 Modification of a flight plan
• CPC Class Codes: G08G 5/0069 specially adapted for an unmanned aircraft
• CPC Class Codes: H04L 67/12 : specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04N 7/181 : for receiving images from a plurality of remote sources
• CPC Class Codes: H04Q 2209/40 : using a wireless architecture
• CPC Class Codes: H04Q 9/00 : Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
• CPC Class Codes: H04W 28/065 : using assembly or disassembly of packets
• CPC Class Codes: H04W 4/025 : using location based information parameters

Abstract

One variation of a method for imaging an area of interest includes: within a user interface, receiving a selection for a set of interest points on a digital map of a physical area and receiving a selection for a resolution of a geospatial map; identifying a ground area corresponding to the set of interest points for imaging during a mission; generating a flight path over the ground area for execution by an unmanned aerial vehicle during the mission; setting an altitude for the unmanned aerial vehicle along the flight path based on the selection for the resolution of the geospatial map and an optical system arranged within the unmanned aerial vehicle; setting a geospatial accuracy requirement for the mission based on the selection for the mission type; and assembling a set of images captured by the unmanned aerial vehicle during the mission into the geospatial map.

Claims

1. A method, comprising:

within a user interface, receiving a selection for a mission type, receiving a selection for a set of interest points on a digital map of a physical area, and receiving a selection for a resolution of a geospatial map;

identifying a ground area corresponding to the set of interest points for imaging during a mission;

generating a flight path over the ground area for execution by an unmanned aerial vehicle during the mission;

setting an altitude for the unmanned aerial vehicle along the flight path based on the selection for the resolution of the geospatial map and an optical system arranged within the unmanned aerial vehicle;

setting a geospatial accuracy requirement for the mission based on the selection for the mission type; and

assembling a set of images captured by the unmanned aerial vehicle during the mission into the geospatial map based on the geospatial accuracy requirement.

2. The method of claim 1, further comprising, within the user interface, receiving a time accuracy for the geospatial map, wherein identifying the ground area comprises selecting the ground area within an area bounded by the set of interest points and not associated with images stored from a previous mission completed within a threshold period of time specified by the time accuracy, wherein assembling the set of images into the geospatial map comprises assembling the set of images captured by the unmanned aerial vehicle during the mission and an image stored from a previous mission into the geospatial map, the previous mission completed within the threshold period of time specified by the time accuracy.

3. The method of claim 1, wherein setting the altitude for the unmanned aerial vehicle along the flight path comprises accessing terrain altitude data of features within the ground area and setting the altitude for the unmanned aerial vehicle to maintain an altitude over features within the ground area along the flight path.

4. The method of claim 1, wherein receiving the selection for the resolution of the geospatial map comprises receiving a selection for a value for a linear distance per pixel in the geospatial map, and wherein setting the altitude for the unmanned aerial vehicle along the flight path comprises specifying a target altitude for the unmanned aerial vehicle during the flight path to achieve the value for the linear distance per pixel in the geospatial map with images captured by the unmanned aerial vehicle through a lens of substantially fixed angle of view.

5. The method of claim 1, wherein generating the flight path over the ground area comprises generating the flight path over a first portion of the ground area for execution by the unmanned aerial vehicle during the mission and generating a second flight path over a second portion of the ground area for execution by a second unmanned aerial vehicle during the mission, and wherein assembling the set of images into the geospatial map comprises aggregating the set of images captured by the unmanned aerial vehicle and a second set of images captured by the second unmanned aerial vehicle during the mission into the geospatial map.

6. The method of claim 1, wherein receiving the selection for the mission type comprises receiving a selection for a structural survey, wherein receiving the selection for the set of interest points comprises receiving an address of a structure, wherein identifying the ground area comprises selecting a coordinate in a geospatial coordinate system corresponding to the address of the structure, and wherein setting the geospatial accuracy requirement for the mission comprises disabling a ground control point requirement for the mission based on the selection for the structural survey.

7. The method of claim 1, wherein receiving the selection for the mission type comprises receiving a selection for a land area survey, wherein receiving the selection for the set of interest points comprises receiving selection of three points on the digital map, wherein identifying the ground area comprises selecting a polygonal land area bounded by the three points, and wherein setting the geospatial accuracy requirement for the mission comprises selecting a ground control point within the ground area.

8. The method of claim 7, further comprising, through the user interface, receiving a selection for an accuracy of the geospatial map, wherein selecting the ground control point comprises selecting a number of ground control points within the ground area based on the selection for the accuracy of the geospatial map, and wherein assembling the set of images into the geospatial map based on the geospatial accuracy requirement comprises pairing a portion of an image in the set of images to the ground control point to geographically locate the geospatial map.

9. The method of claim 1, further comprising, through the user interface, receiving a selection for a particular geographic coordinate system for the geospatial map, wherein assembling the set of images into the geospatial map comprises tagging each pixel in the geospatial map with a geographic coordinate in a default geographic coordinate system and converting a geographic coordinate of each pixel in the geospatial map into the particular geographic coordinate system.

10. The method of claim 1, wherein assembling the set of images into the geospatial map comprises downloading the set of images from the unmanned aerial vehicle over a computer network upon completion of the mission.

11. The method of claim 1, wherein generating the flight path comprises defining a first landing path and a second landing path at a landing site proximal the ground area for execution by the unmanned aerial vehicle, the first landing path associated with a first wind condition and the second landing path associated with a second wind condition different from the first wind condition.

12. The method of claim 11, wherein defining the first landing path and the second landing path comprise selecting the landing site proximal the ground area from a previous geospatial map generated from images captured in a previous mission, identifying an obstruction proximal the landing site from the previous geospatial map, and defining the first landing path and the second landing path that avoid the obstruction.

13. A method, comprising:

within a user interface, receiving a selection for a set of interest points on a digital map of a physical area and receiving a selection for a resolution of a geospatial map;

identifying a ground area corresponding to the set of interest points for imaging during a mission;

generating a first flight path over a first portion of the ground area for execution by a first unmanned aerial vehicle during the mission;

generating a second flight path over a second portion of the ground area for execution by a second unmanned aerial vehicle during the mission;

setting a first altitude for the first unmanned aerial vehicle along the first flight path based on the selection for the resolution of the geospatial map and an optical system arranged within the first unmanned aerial vehicle;

setting a second altitude for the second unmanned aerial vehicle along the second flight path based on the selection for the resolution of the geospatial map and an optical system arranged within the second unmanned aerial vehicle; and

stitching a first set of images captured by the first unmanned aerial vehicle and a second set of images captured by the second unmanned aerial vehicle during the mission into the geospatial map.

14. The method of claim 13, wherein generating the first flight path and wherein generating the second flight path comprise selecting a common takeoff site and selecting a common landing site for the first unmanned aerial vehicle and the second unmanned aerial vehicle during the mission.

15. The method of claim 14, wherein selecting the common landing area comprises defining a first landing path and a second landing path at the landing site, the first landing path associated with a first wind condition and the second landing path associated with a second wind condition different from the first wind condition.

16. The method of claim 13, wherein generating the second flight path comprises generating the second flight path over the second region of the ground area that intersects the first region of the ground area across an overlap region, and wherein stitching the first set of images and the second set of images into the geospatial map comprises aligning a subset of images in the first set of images corresponding to the overlap region with a subset of images in the second set of images corresponding to the overlap region.

17. The method of claim 13, further comprising, within the user interface, receiving a selection for an accuracy of the geospatial map and setting an image capture rate for first unmanned aerial vehicle over the ground area during the mission.

18. A method, comprising:

at an unmanned aerial vehicle, capturing a first image in a series of images of a preset ground area during a mission;

in response to capturing the first image, uploading a first image file of the first image to a computer network over a first wireless communication protocol;

at the unmanned aerial vehicle, capturing a second image in the series of images during the mission;

in response to capturing the second image, uploading a first image file of the second image to the computer network over the first wireless communication protocol;

in response to completion of the mission, detecting access to a second wireless communication protocol;

uploading a second image file of the first image and a second image file of the second image to the computer network over the second wireless communication protocol, the second image file of the first image of a greater resolution than the first image file of the first image, and the second image file of the second image of a greater resolution than the first image file of the second image; and

stitching the second image file of the first image and the second image file of the second image into a geospatial map of the preset ground area.

19. The method of claim 18, further comprising enabling visual access to the first image file of the first image, substantially in real-time with capture of the first image, through a computing device in communication with the computer network.

20. The method of claim 18, wherein uploading the first image file of the first image comprises uploading a thumbnail version of first image file to the computer network over cellular communication protocol.

21. The method of claim 20, wherein uploading the second image file of the first image comprises uploading a raw full-size version of the first image to the computer network over Wi-Fi communication protocol.

22. The method of claim 21, wherein uploading the second image file of the first image comprises uploading, to the computer network, the second image file of the first image with a time of capture of the first image and a three-dimensional location coordinate of the unmanned aerial vehicle at the time of capture of the first image, and wherein stitching the second image file of the first image and the second image file of the second image into the geospatial map comprises generating the geospatial map based on the three-dimensional location coordinate of the unmanned aerial vehicle at the time of capture of the first image, the geospatial map comprising a pixel tagged with the time of capture of the first image.