Ducted rotor unmanned aerial vehicles

• US 10,017,249 B1
• Filed: 08/22/2016
• Issued: 07/10/2018
• Est. Priority Date: 08/21/2015
• Status: Expired due to Fees

• Current Assignee: Aevena, Inc.
• Original Assignee: Aevena, Inc.
• Inventors: Tseng, Jeffrey, Edwards, Bryan
• Primary Examiner(s): Paige, Tyler
• Application Number:
  US15/243,887
• Time in Patent Office: 687 Days
• Field of Search: 701 3
• CPC Class Codes: B64C 27/20 Rotorcraft characterised by having shrouded rotors, e.g. flying platforms
• CPC Class Codes: B64C 39/024 of the remote controlled vehicle type, i.e. RPV
• CPC Class Codes: B64D 47/08 Arrangements of cameras
• CPC Class Codes: B64U 10/14 with four distinct rotor axes, e.g. quadcopters
• CPC Class Codes: B64U 2101/30 for imaging, photography or videography
• 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 30/20 Rotors; Rotor supports
• CPC Class Codes: B64U 30/26 Ducted or shrouded rotors
• CPC Class Codes: B64U 50/14 ducted or shrouded
• CPC Class Codes: B64U 80/25 for recharging batteries; for refuelling
• CPC Class Codes: B64U 80/30 with arrangements for data transmission

Abstract

Systems and methods in accordance with various embodiments of the invention can be utilized to implement unmanned aerial vehicles (“UAVs”) designed for autonomous operation in cluttered environments, indoor environments and/or as photography drones. One embodiment includes: launching an unmanned aerial vehicle (UAV); performing in flight path planning to scan an area for people using the UAV; detecting the presence of at least one subject by processing image data captured by at least one camera on the UAV; determining at least one pose from which to capture images of detected at least one subject using the UAV; performing path planning to navigate the UAV to the determined at least one pose; and capturing images of the detected at least one subject using at least one camera on the UAV when the UAV is posed in one of the determined at least one pose.

Claims

1. A method of capturing images, comprising:

launching an unmanned aerial vehicle (UAV) by way of a Flight Management Unit (FMU) wherein the FMU executes an automatic takeoff process;

utilizing a map maintained by the UAV to perform in flight path planning to scan an area for people using the UAV;

detecting the presence of at least one subject by processing image data captured by at least one camera on the UAV;

utilizing an Application Processing Unit (APU) to determine at least one ideal position from which to capture images of detected at least one subject using the UAV;

performing path planning by communication between the APU and a Robotics Processing Unit in order to navigate the UAV to the determined at least one ideal position; and

capturing images of the detected at least one subject using at least one camera on the UAV when the UAV is positioned in one of the determined at least one ideal positions.

2. The method of claim 1, further comprising capturing audio data using a microphone on the UAV.

9. The method of claim 1 wherein the at least one camera further comprises at least one optical system selected from the group consisting of:

Fisheye lens and catadiopitc lens.

10. The method of claim 1 wherein the UAV is configured to simultaneously utilize a map maintained by the UAV to perform in flight path planning and detect the presence of at least one subject by processing image data captured by at least one camera on the UAV.

12. The method of claim 1 further comprising;

receiving new information regarding the context of an external environment and utilizing the APU to determine at least one new ideal position from which to capture images of detected at least one subject using the UAV.

3. An unmanned aerial vehicle, comprising:

at least one rotor system having a plurality of rotor blades connected to one central rotation point wherein the plurality of rotor blades are configured to incorporate uneven angular blade spacing about the one central rotation point and wherein the at least one rotor system is configured to be mounted within a ducted propulsion system;

a flight management unit (FMU) configured to handle all of the computation associated with controlling rotors within the ducted propulsion system;

a robotics processing unit (RPU) configured to perform autonomous navigation;

an application processing unit (APU) configured to perform processing associated with high level behavior.

4. The unmanned aerial vehicle of claim 3, wherein the APU is configured to execute processes including:

identification of subjects of interest;

position selection; and

image acquisition.

5. The unmanned aerial vehicle of claim 3, wherein each of the FMU, RPU, and APU includes a microprocessor.

6. The unmanned aerial vehicle of claim 3, wherein the APU is configured to execute the process of autonomously navigating to a docking station to perform data transfer.

7. The UAV of claim 3 wherein the at least one rotor system is an underactuated rotor system comprising rigid central hub hingedly connected to the plurality of rotor blades such that the at least one rotor system may achieve uneven blade spacing of the plurality of rotor blades in a dynamic format.

8. The UAV of claim 3 wherein the FMU, the RPU, and the APU, are configured to communicate with remote servers via a wireless network connection.

11. The UAV of claim 3 wherein the UAV is configured to simultaneously utilize a map maintained by the UAV to perform in flight path planning and detect the presence of at least one subject by processing image data captured by at least one camera on the UAV.

13. The UAV of claim 3 further comprising a plurality of rotor systems coaxially mounted within the ducted propulsion system.

14. The UAV of claim 3 wherein the plurality of rotor blades are configured to have a shape selected from a group consisting of:

a serrated trailing edge, a serrated leading edge, a wide chord, a scimitar, and a spanwise reverse sweep.

15. The UAV of claim 3 further comprising a plurality of sensors cooperatively connected to the body of the ducted propulsion system and in communication with the FMU, the RPU, and the APU of the UAV.

16. The UAV of claim 15 wherein the plurality of sensors are sonar sensors.