Detection and signaling of conditions of an unmanned aerial vehicle
US10577121B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2017 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Aug 15, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64U2201/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A condition of an unmanned aerial vehicle (UAV) is detected using one or more sensors of the UAV and signaled according to an alert definition associated with the condition. For example, an alert definition can indicate to signal the condition by using a motor of the UAV to produce an audible tone. A tonal signal having a frequency within an audible spectrum can be generated according to the alert definition. The tonal signal and a drive signal used for supplying current to the motor can be combined to produce a combined signal. The combined signal can then be transmitted to the motor to cause the motor to produce the audible tone. In some cases, an amplitude of the tonal signal can be modulated, such as where the amplitude of the combined signal exceeds a threshold associated with an operating margin of the UAV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.