Traveling cleaning appliance and method for operating such an appliance

Patent metadata

Field	Value
Publication number	US-9629514-B2
Application number	US-201314096355-A
Country	US
Kind code	B2
Filing date	Dec 4, 2013
Priority date	Dec 5, 2012
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A traveling cleaning appliance or floor care appliance or floor treatment appliance is provided with a device for creating photographic pictures of a surface to be traveled on. A picture is evaluated for the type of a floor covering for differentiating between a hard floor covering and a carpeted floor. An identified floor covering is used for a traveling strategy and/or for a setting of cleaning parameters. Further, a method for operating an automatically traveling floor cleaning appliance which has a device for creating photographic pictures of a floor surface to be traveled on includes evaluating pictures that have been taken with regard to the type of floor covering. In dependence on an evaluation, a traveling strategy and/or setting of cleaning parameters such as floor clearance and/or size of secondary air openings and/or brush speed is carried out.

First claim

The invention claimed is:

1. A traveling cleaning appliance or floor care appliance or floor treatment appliance, the appliance comprising:
a camera configured to create photographic pictures of a surface to be traveled on, and
a microcontroller comprising software configured to evaluate a picture taken by the camera with regard to the type of a floor covering,
wherein the software is configured to formulate a traveling strategy depending on the type of the floor covering,
wherein the software is configured to set cleaning parameters selected from the group consisting of a floor clearance, a size of secondary air openings, and a brush speed depending on the type of the floor covering, and
wherein the software is configured to perform a reflectivity evaluation of the floor covering and/or a statistical evaluation of characteristic patterns or grains of the floor covering in a color space.

2. The cleaning appliance or floor care appliance or floor treatment appliance according to claim 1 , wherein the evaluation can be carried out in the cleaning appliance itself.

3. The cleaning appliance or floor care appliance or floor treatment appliance according to claim 1 , wherein the photographically captured surface can be illuminated by a lighting element that is provided in the cleaning appliance.

4. The cleaning appliance or floor care appliance or floor treatment appliance according to claim 3 , wherein the lighting element emits a defined white light.

5. The cleaning appliance or floor care appliance or floor treatment appliance according to claim 1 , wherein the picture is a color picture and can be evaluated with regard to the color.

6. The cleaning appliance or floor care appliance or floor treatment appliance according to claim 1 , wherein the evaluation can be performed with regard to overexposed areas (white areas) in an image.

7. The cleaning appliance or floor care appliance or floor treatment appliance according to claim 1 , wherein a picture of a floor covering can be defined by the user as whether to be traveled on or not to be traveled on.

8. The appliance according to claim 1 , wherein the software is configured to evaluate overpixelled areas of a picture taken by the camera.

9. The appliance according to claim 1 , wherein the type of the floor covering is selected from the group consisting of carpet and wood.

10. A method for operating a traveling cleaning appliance or a floor care appliance or floor treatment appliance, the appliance comprising a camera configured to create photographic pictures of a surface to be traveled on, the appliance also comprising a microcontroller comprising software configured to evaluate a picture taken by the camera with regard to a type of a floor covering, the method comprising steps of:
taking a picture with the camera of a floor covering of the surface;
evaluating via the software a type of the floor covering;
formulating via the software a traveling strategy depending on the type of the floor covering;
setting cleaning parameters for the appliance depending on the type of the floor covering, the cleaning parameters comprising a floor clearance and/or a size of secondary air openings and/or a brush speed; and
performing via the software a reflectivity evaluation of the floor covering and/or a statistical evaluation of characteristic patterns or grains of the floor covering in a color space.

11. The method according to claim 10 , wherein the picture is taken as the appliance travels over the surface to be cleaned, with no immediate reaction taking place to surface formations detected as being different.

12. The method according to claim 11 , wherein said traveling is carried out automatically or under the guidance of the user.

13. The method according to claim 10 , further comprising a step of: displaying on a display a result of the evaluation or communicating a result of the evaluation using a voice output.

14. The method according to claim 10 , further comprising steps of:
confirming via a user of the appliance a result of the evaluation; and
pursuing the traveling strategy of the appliance on the surface only after the user confirms the result of the evaluation.

15. The method according to claim 10 , further comprising steps of:
carrying out a cleaning run on the surface according to the traveling strategy,
creating, via the camera, additional pictures of the surface during the cleaning run, and
evaluating via the software the additional pictures.

16. A cleaning system comprising:
a traveling cleaning appliance or floor care appliance or floor treatment appliance, the appliance comprising a camera configured to create photographic pictures of a surface to be traveled on, and
a microcontroller disposed externally from the appliance and comprising software configured to evaluate a picture taken by the camera with regard to a type of a floor covering, the microcontroller being configured to communicate wirelessly with the appliance,
wherein the software is configured to formulate a traveling strategy for the appliance depending on the type of the floor covering,
wherein the software is configured to set cleaning parameters for the appliance depending on the type of the floor covering, the cleaning parameters being selected from the group consisting of a floor clearance, a size of secondary air openings, and a brush speed, and
wherein the software is configured to perform a reflectivity evaluation of the floor covering and/or a statistical evaluation of characteristic patterns or grains of the floor covering in a color space.

Assignees

• Vorwerk Co Interholding

Inventors

• Hillen Lorenz
• Meggle Martin
• Strang Benjamin

Classifications

• A47L9/30

  Arrangement of illuminating devices · CPC title

• A47L2201/06

  Control of the cleaning action for autonomous devices; Automatic detection of the surface condition before, during or after cleaning · CPC title

• A47L11/4011

  Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor · CPC title

• A47L11/4061 Primary

  Steering means; Means for avoiding obstacles; Details related to the place where the driver is accommodated · CPC title

• G05D1/0274

  using mapping information stored in a memory device (navigation using map-matching G01C21/30) · CPC title