# US 2023/0055083 A1 · System for drone calibration and method therefor

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- Number: US 2023/0055083 A1
- Document ID: US20230055083A1
- Status: Published application
- Kind: A1
- Application number: 17/797,670
- Filed: 2020-02-28
- Published: 2023-02-23
- Earliest claimed: 2020-02-04
- Assignees: Preneu
- Applicants: Preneu
- Inventors: Chung Hee KA; Jong Kyeong LEE; Hyun Jin JUNG
- Web page: https://patentgrep.com/patent/US20230055083A1

## CPC

- B64F 5/60: Testing or inspecting aircraft components or systems
- G05D 1/085: {to ensure coordination between different movements}
- B64C 39/024: {of the remote controlled vehicle type, i.e. RPV}
- B64U 10/14: with four distinct rotor axes, e.g. quadcopters
- G01C 17/38: Testing, calibrating, or compensating of compasses
- G01C 25/005: {initial alignment, calibration or starting-up of inertial devices}
- G05D 1/69: Coordinated control of the position or course of two or more vehicles
- B64U 2201/10: autonomous, i.e. by navigating independently from ground or air stations, e.g. by using inertial navigation systems [INS]
- B64F: GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- B64C: AEROPLANES; HELICOPTERS
- B64U: UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S)

## Abstract

Disclosed are a system for drone calibration related to calibration that is required prior to flying a drone, and a method therefor. According to the present invention, there is an effect of improving the convenience of a calibration operation required for flying a drone, and in addition, when multiple drones have to be flying at the same time, there is an effect of allowing the drown to be easily calibrated without manually calibrating each of the multiple drones.

## Claims

### Claim 1

A drone calibration system, comprising:
a flight control unit that sets a reference value for flight of a drone;
a calibration control unit that receives a calibration command from the flight control unit and creates a drone attitude implementation command corresponding to the calibration command; and
a calibration reference unit that receives the drone attitude implementation command from the calibration control unit and rotates based on at least one of a first axis, a second axis and a third axis in response to the drone attitude implementation command,
wherein the calibration control unit executes calibration for information relevant to drone flight using a result of the rotation of the calibration reference unit.

### Claim 2 (depends on 1)

The system according to claim 1, wherein the calibration for information relevant to the drone flight includes at least one among IMU (Inertia Measurement Unit;
hereinafter “IMU”) calibration and compass calibration.

### Claim 3 (depends on 1)

The system according to claim 1, wherein the calibration control unit transmits calibration data, which is a result of executing calibration for information relevant to drone flight, to the flight control unit.

### Claim 4 (depends on 3)

The system according to claim 3, wherein the flight control unit changes a preset reference value in order to correspond to the calibration data.

### Claim 5

A drone calibration method, comprising:
setting a reference value for drone flight by a flight control unit;
receiving a calibration command from the flight control unit by a calibration control unit;
creating a drone attitude implementation command corresponding to the calibration command by the calibration control unit;
receiving the drone attitude implementation command from the calibration control unit by a calibration reference unit;
rotating the calibration reference unit based on at least one of a first axis, a second axis and a third axis in response to the drone attitude implementation command; and
executing calibration for information relevant to drone flight using a result of the rotation of the calibration reference unit by the calibration control unit.