Agricultural drone having improved safety
AssigneeNileworks Inc.
InventorsChihiro WAKE, Hiroshi YANAGISHITA
Life of this patent
Estimating the term…
Abstract
Provide is an agricultural chemical spraying drone with improved safety. An acceleration sensor and a contact detection sensor are combined to detect contact of a drone with an obstacle. In a case where the contact is detected, a retreat action such as hovering is taken. In addition, a message may be displayed on a control terminal, a warning sound may be generated, and a warning light may be turned on. Further, a structure capable of minimizing finger insertion accidents and minimizing interference with a rotor even in collision is adopted as a propeller guard.
Claims21
A drone, comprising:
- an acceleration measurement unit;
- a flight control unit;
- and a speed measurement unit;
- wherein the flight control unit causes an airframe to take a predetermined retreat action
- when the acceleration measurement unit detects an increase or a change, more than or equal to a predetermined value, in an acceleration of the airframe within a predetermined time interval, and
- the speed measurement unit detects that a speed of the airframe becomes less than or equal to a predetermined value.
3-4. (canceled)
(canceled)
A drone, comprising:
- a plurality of rotor blades;
- a rotation speed measurement unit for the plurality of rotor blades;
- and a flight control unit;
- wherein the flight control unit takes a predetermined retreat action for an entanglement of a foreign matter,
- when a condition, where a rotation speed of at least one of the plurality of rotor blades measured by the rotation speed measurement unit is lower than or equal to a target rotation speed of a motor during a normal condition corresponding to an input voltage for a first predetermined rotation speed, persists for more than or equal to a predetermined value.
A drone, comprising:
- a propeller guard configured by an outer peripheral part;
- a central part, closer to the center of the rotor than the outer peripheral part;
- and an inner peripheral part;
- wherein
- the outer peripheral part has a lattice structure with a roughness of preventing a finger from entering,
- the central part has a rough lattice structure with a roughness of preventing a head of an infant from entering, and
- the outer peripheral part does not have a lattice structure.
A drone, comprising:
- a propeller guard configured by a plurality of radial members and a peripheral part, wherein at least one of the plurality of radial members has a notch portion on a rotor blade side.
(canceled)
A drone control method, comprising:
- an acceleration measurement step of measuring an acceleration of an airframe;
- a speed measurement step;
- and
- a retreat action step of causing the airframe to take a predetermined retreat action when an increase or a change, more than or equal to a predetermined value, is detected in the acceleration of the airframe within a predetermined time interval in the acceleration measurement step
- when a speed of the airframe is detected to become less than or equal to a predetermined value in the speed measurement step.
15-33. (canceled)
A non-transitory computer-readable storage medium that stores a computer-executable program for controlling a drone, the program comprising instructions for:
- measuring an acceleration of an airframe;
- measuring a speed;
- and
- causing the airframe to take a predetermined retreat action when an increase or a change, more than or equal to a predetermined value, is detected in the acceleration of the airframe within a predetermined time interval, and
- when a speed of the airframe is detected to become less than or equal to a predetermined value.
Dependencies are inferred from the claim text.