FR3125017A1 - Wired drone for the treatment of a surface of a building by a treatment fluid. - Google Patents

Abstract

Wired drone for the treatment of a surface of a building by a treatment fluid. The invention relates to a wired drone (100) for the treatment of a surface of a building by fluid, and comprising: - a propulsion system, comprising motors (130), front and rear propellers,- a system of projection of the fluid comprising a spray nozzle (110). It is essentially characterized in that: The projection system comprises a gun (111) and an extension (140); - the gun (111) comprising a solenoid valve, to control the fluid flow; the gun (111) being connected to the extension (140) at one end, the other end being configured to be connected to a sealed sheath (200) for the supply of fluid; - the extension (140) being connected to the spray nozzle (110) and to said gun (111); Said spray nozzle (110) being offset in front of the blades of the front propellers of the drone (100) thanks to the extension (140). . Figure for abstract: Figure 3

Description

Wired drone for the treatment of a surface of a building by a treatment fluid.

The present invention relates to surface treatment in the field of construction, maintenance, cleaning and renovation of buildings.

In this area, it is common to have to perform high-risk tasks such as work at height or on materials or substances that are carcinogenic, mutagenic and toxic for reproduction (CMR).

In particular, high-risk tasks consist of projecting fluid, liquid or gaseous products onto building surfaces. Surfaces can be facades or roofs.

Document FR3048415 is known. However, the device presented therein requires a telescopic mast, and a camera thereon, which is impractical. Document WO2020021305 is also known, but which requires support means to keep a drone in contact with the surface to be treated.

More specifically, the invention relates according to a first of its objects, a drone (100) with wired electrical power supply for the treatment of a surface of a building by a treatment fluid, comprising:

- a propulsion system, comprising a set of engines (130), front propellers and rear propellers,

- a fluid projection system comprising a set of at least one spray nozzle (110) for treating said surface.

It is essentially characterized in that:

- The projection system comprises a gun (111) and an extension (140);

- the gun (111) being connected to the extension (140) by one of its ends, the other end of the gun (111) being configured to be connected to a sealed sheath (200) for supplying fluid to the treatment ; the gun (111) comprising a solenoid valve, to control the flow of fluid to be sprayed by the projection system;

- the extension (140) being connected to said set of at least one spray nozzle (110) by one of its ends and to said gun (111) by the other of its ends;

- Said set of at least one spray nozzle (110) being offset in front of the blades of the front propellers of the drone (100) thanks to the extension (140).

Thanks to this characteristic, the sprayed fluid is less likely to be sprayed on the blades of the propellers, when the spray nozzle has a substantially horizontal spray axis, parallel to the plane of the propellers.

It is also possible to provide a telemetry system, the telemetry system comprising at least one of:

- a set of LIDAR sensors, to locate the drone (100) in space,

- a sonar.

Thanks to this feature, the drone is located in space both horizontally and vertically, and can be kept away from the surface to be treated, to avoid any collision.

It is also possible to provide a vision system, comprising a set of at least one on-board optical camera, at least one optical camera being sensitive to the visible spectrum; at least one camera that can be sensitive to the infrared spectrum.

Thanks to this feature, the effectiveness of the surface treatment can be observed in real time.

It is also possible to provide a radio communication system.

Thanks to this feature, information can be exchanged from the ground station to the drone, and vice versa.

Provision can be made for the drone to have an X8 structure comprising four X-shaped arms, each arm supporting a motor block (130), each motor block (130) comprising a respective double motor (130), each double motor ( 130) comprising an upper motor (130) for an upper propeller (120), and a lower motor (130) for a lower propeller (121); each propeller being double-bladed.

Thanks to this feature, the drone is particularly stable in flight, and easy to fly.

Provision can be made for each arm to be articulated (131), so that it can be folded back on itself.

Thanks to this feature, the drone can be transported easily.

It is also possible to provide a positioning system comprising a satellite positioning module; said satellite positioning module optionally comprising a real-time kinematics module.

Thanks to this feature, the position of the drone is precise and measurable.

There may further be provided a sealed sheath (200) configured to transmit electrical energy to the propulsion system and the process fluids to the fluid projection system, the sealed sheath (200) comprising a plurality of flexible conduits, comprising at least one of:

- at least one fluid product supply line,

- at least one electrical supply line for supplying the drone (100) with electrical energy,

- at least one communication line, in this case an optical fiber, to exchange sensor data and motor commands (130) between the drone (100) and the ground station by wire,

- at least one air supply line to drive the gun (111);

- at least one safety line, in the event of failure of the drone (100).

Thanks to this feature, the drone can be continuously supplied with energy and fluids from the ground station.

Provision can be made for the telemetry system to be configured so that the drone (100) automatically respects a predetermined safety distance (Dmin), so that if the distance between the set of at least one spray nozzle (110) and the surface to be treated passes below the safety distance (Dmin), then the drone (100) is configured to automatically return beyond the safety distance (Dmin) of the surface to be treated.

Thanks to this feature, the drone can be automatically kept at a distance from the surface to be treated, to avoid any collision.

According to another of its objects, the invention relates to a system comprising a drone (100) according to the invention, the system further comprising:

- a set of at least one container comprising fluid products, or a fluid supply network, for the treatment of a surface of the building by the drone (100), and

- a fluid pump (310), configured to send to the drone (100) the fluid product pumped in all of at least one container, along a flexible pipe located in the sealed sheath (200).

Thanks to this characteristic, the system according to the invention is autonomous, it suffices to connect the power supply, mains, generator, renewable energy source or other, to be able to treat a surface.

The drone has at least one of the following characteristics:

- a wired power supply;

- a maximum take-off weight of 25 kg;

- a maximum thrust of 40 kg;

- wind resistance, i.e. the ability to fly up to a wind speed of 30 km/h;

- a flight up to at least 50m in height.

Unlike the solutions of the prior art which require mapping the area to be treated prior to the surface treatment, in order to determine the start and end points of the treatment and any specific areas to be repaired, the present invention can be implemented directly on site, without mapping.

Advantageously, the present invention only implements a single drone, and not a fleet of drones.

Other characteristics and advantages of the present invention will appear more clearly on reading the following description given by way of illustrative and non-limiting example and made with reference to the appended figures.

DESCRIPTION OF DRAWINGS

• illustrates a drone according to the invention in top view,
• illustrates the drone of the in 3/4 view,
• illustrates the drone of the in profile view, where only the lower helices are shown,
• illustrates the drone of the without the propellers, and in which the arms are folded,
• illustrates a drone according to the invention in the processing phase of a facade of a building.

Claims (10)

Drone (100) with wired electrical power supply for treating a surface of a building with a treatment fluid, comprising:
- a propulsion system, comprising a set of engines (130), front propellers and rear propellers,
- a fluid projection system comprising a set of at least one spray nozzle (110) for treating said surface,
characterized in that:

• The projection system includes a gun (111) and an extension (140);
  - the gun (111) being connected to the extension (140) by one of its ends, the other end of the gun (111) being configured to be connected to a sealed sheath (200) for supplying fluid to the treatment ; the gun (111) comprising a solenoid valve, to control the flow of fluid to be sprayed by the projection system;
  - the extension (140) being connected to said set of at least one spray nozzle (110) by one of its ends and to said gun (111) by the other of its ends;
• Said assembly of at least one spray nozzle (110) being offset in front of the blades of the front propellers of the drone (100) thanks to the extension (140).

A drone (100) according to claim 1, further comprising a telemetry system, the telemetry system comprising at least one of:
- a set of LIDAR sensors, to locate the drone (100) in space,
- a sonar. Drone (100) according to any one of the preceding claims, further comprising a vision system, comprising an assembly of at least one on-board optical camera, at least one optical camera being sensitive to the visible spectrum; at least one camera that can be sensitive to the infrared spectrum. A drone (100) according to any preceding claim, further comprising a radio communication system. Drone (100) according to any one of the preceding claims, having an X8 structure comprising four X-shaped arms, each arm supporting a motor block (130), each motor block (130) comprising a double motor (130) respective, each twin-motor (130) comprising an upper motor (130) for an upper propeller (120), and a lower motor (130) for a lower propeller (121); each propeller being double-bladed. Drone (100) according to claim 5, in which each arm is articulated (131), so that it can be folded back on itself. A drone (100) according to any preceding claim, further comprising a positioning system comprising a satellite positioning module; said satellite positioning module optionally comprising a real-time kinematics module. A drone (100) according to any preceding claim, further comprising a sealed sheath (200) configured to transmit electrical power to the propulsion system and process fluids to the fluid delivery system, the sealed sheath (200 ) comprising a plurality of flexible pipes, comprising at least one of:

• at least one fluid product supply line,
• at least one electrical supply line for supplying the drone (100) with electrical energy,
• at least one communication line, in this case an optical fiber, for exchanging sensor data and motor commands (130) between the drone (100) and the ground station by wire,
• at least one air supply line to drive the gun (111);
• at least one safety line, in the event of failure of the drone (100).

Drone (100) according to any one of the preceding claims, in which the telemetry system is configured so that the drone (100) automatically respects a predetermined safety distance (Dmin), so that if the distance between the set of at least one spray nozzle (110) and the surface to be treated passes below the safety distance (Dmin), then the drone (100) is configured to automatically return beyond the safety distance (Dmin) of the surface to be treated. A system comprising a drone (100) according to any preceding claim, the system further comprising:
- a set of at least one container comprising fluid products, or a fluid supply network, for the treatment of a surface of the building by the drone (100), and
- a fluid pump (310), configured to send to the drone (100) the fluid product pumped in the set of at least one container, along a flexible pipe located in the sealed sheath (200).