Drift correction during the application of crop protection agents

Patent metadata

Field	Value
Publication number	US-11608175-B2
Application number	US-201816495853-A
Country	US
Kind code	B2
Filing date	Mar 19, 2018
Priority date	Mar 24, 2017
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

The present invention relates to the autonomous application of crop protection products by means of a drone. The present invention relates to a process and to an unmanned aerial vehicle for applying crop protection product taking into consideration drift phenomena. The present invention furthermore relates to a computer program product which can be employed for controlling the process according to the invention.

First claim

The invention claimed is:

1. A process for applying a crop protection product to a field by means of an autonomous aerial vehicle (drone), comprising the steps:
providing a digital application map for the field in which the amounts of crop protection product to be applied are recorded for individual partial areas of the field;
passing over the field by the autonomous aerial vehicle along a route, and applying the crop protection product via at least one nozzle;
determining the spatial distribution of the crop protection product during the application;
adapting the parameters for applying the crop protection product to the spatial distribution determined, so that the crop protection product is applied to the partial areas of the field in accordance with the digital application field; and
updating the digital application map by recording in the application map those amounts which reach those partial areas of the field which, according to the route and the application map, should not yet be treated with crop protection product.

2. The process according to claim 1 , wherein
the wind speed and the wind direction prevailing during the application is recorded by means of one or more wind sensors, and
in that the amounts of crop protection product which, as the result of the wind, reach those partial areas of the field which, according to the route and/or the application map, should not or not yet be treated with crop protection product are determined.

3. The processing according to claim 1 , characterized in that a part of the amounts of crop protection product applied in the field is collected by means of one or more sensors, and in that, with the aid of the collected product, the amounts which reach those partial areas of the field which, according to the route and/or the application map, should not or not yet be treated with crop protection product are identified.

4. The process according to claim 1 , characterized in that the parameters for compensating for drift phenomena are changed in such a way that, during further application, no amounts of crop protection product reach those partial areas which, according to the route and/or the application map, should not and/or not yet be treated with crop protection product.

5. The process according to claim 1 , characterized in that amounts of crop protection product which are applied per unit of time, number of nozzles used, nozzle positions, pressure before the nozzles, flying height of the drone, flying speed of the drone, wind speed and wind direction enter into a model with which the spatial distribution of the crop protection product applied is determined.

6. The process according to claim 1 , characterized in that a digital distribution map is generated, wherein the digital distribution map records those amounts of crop protection product which, as the result of the application of crop protection product, have reached the partial areas of the field.

7. The process according to claim 6 , wherein, during the application the digital application map is compared with the digital distribution map and the application parameters and/or the route and/or the flying height and flying speed of the drone are adapted such that the digital distribution map corresponds to the digital application map.

8. An unmanned aerial vehicle (drone) for applying a crop protection product to a field on which crop plants are grown, comprising:
a tank for the crop protection product;
at least one nozzle for applying the crop protection product above the field, wherein a crop protection product is to be conveyed from the tank towards the at least one nozzle;
a storage unit for storing a digital application map in which the amounts of crop protection product to be applied are recorded for individual partial areas of the field;
a control unit vehicle is configured such that it maneuvers the aerial vehicle along a route above the field and, in doing so, prompts the application of the crop protection product to the field via the at least one nozzle according to the digital application map while the unmanned aerial vehicle passes over the field, and wherein the digital application map is updating during the application by recording in the application map those amounts which reach those partial areas of the field which, according to the route and the application map, should not yet be treated with crop protection product;
wherein the control unit, during the application of the crop protection product, receives information on the spatial distribution of the crop protection product applied and adapts application parameters, when the spatial distribution results in the deviation of the amounts applied from the data of the digital application map.

9. A non-transitory computer program product comprising a storage medium and program code which is stored on the storage medium, and a computer or a control unit into whose main memory the program code is loaded, which causes the following steps to be carried out:
reading in a digital application map in which the amounts of crop protection product to be applied are recorded for individual partial areas of a field, wherein the digital application map is updated during the application by recording in the application map those amounts which reach those partial areas of the field which, according to the route and the application map, should not yet be treated with crop protection product;
controlling a drone for applying the crop protection product on the field according to the digital application map;
determining drift during the application of the crop protection product; and
adapting the application parameters and/or flight parameters and/or route such that drift is reduced or minimized.

10. A process for applying a crop protection product to a field by means of an autonomous aerial vehicle (drone), comprising the steps:
providing a digital application map for the field in which the amounts of crop protection product to be applied are recorded for individual partial areas of the field;
passing over the field by the autonomous aerial vehicle along a route, and applying the crop protection product via at least one nozzle;
determining the spatial distribution of the crop protection product during the application; and
adapting the parameters for applying the crop protection product to the spatial distribution determined, so that the crop protection product is applied to the partial areas of the field in accordance with the digital application field, characterized in that amounts of crop protection product which are applied per unit of time, number of nozzles used, nozzle positions, pressure before the nozzles, flying height of the drone, flying speed of the drone, wind speed and wind direction enter into a model with which the spatial distribution of the crop protection product applied is determined.

11. An unmanned aerial vehicle (drone) for applying a crop protection product to a field on which crop plants are grown, comprising:
a tank for the crop protection product;
at least one nozzle for applying the crop protection product above the field, wherein a crop protection product is to be conveyed from the tank towards the at least one nozzle;
a storage unit for storing a digital application map in which the amounts of crop protection product to be applied are recorded for individual partial areas of the field;
a control unit vehicle is configured such that it maneuvers the aerial vehicle along a route above the field and, in doing so, prompts the application of the crop protection product to the field via the at least one nozzle according to the digital application map while the unmanned aerial vehicle passes over the field, characteriz

Assignees

• Basf Agro Trademarks Gmbh

Inventors

• Peters Ole
• Hoffmann Holger
• Hill Eva

Classifications

• B64C39/024

  of the remote controlled vehicle type, i.e. RPV · CPC title

• G05D1/46

  Control of position or course in three dimensions [3D] · CPC title

• B64U2101/00

  UAVs specially adapted for particular uses or applications · CPC title

• B64U2201/20

  Remote controls · CPC title

• B64U2101/45

  for releasing liquids or powders in-flight, e.g. crop-dusting · CPC title