Dust processing

1. A method of dust processing, comprising:

measuring, via a first particle sensor prior to activation of a vacuum cleaner or an air purifier for cleaning, a first amount of particles of up to a first size in an indoor area of interest;

measuring, via a second particle sensor prior to activation of the vacuum cleaner or the air purifier for cleaning, a second amount of particles of up to a second size, wherein the second size is smaller than the first size; and

determining, via a control circuit configured to communicate with the first and second particle sensors, whether the first amount exceeds the second amount by a predefined threshold in the indoor area of interest, wherein the predefined threshold is a threshold trigger value selected from a group consisting of different threshold trigger values used to distinguish different concentrations levels of dust and/or dirt at different sections of the indoor area of interest; and

wherein the control circuit is configured such that when the first amount is determined to exceed the second amount by the predefined threshold, the control circuit outputs a control signal that comprises a signal to (i) prompt, via a user interface in communication with the control circuit, a user to start a cleaning operation by activating the vacuum cleaner or the air purifier or (ii) to control an activation of the vacuum cleaner or the air purifier to start a cleaning operation of the respective vacuum cleaner or the air purifier in response to the control signal.

2. The method as claimed in claim 1 , further comprising:

cleaning, via a robotic vacuum cleaner, a room if the first amount exceeds the second amount by the predefined threshold.

3. The method as claimed in claim 1 , further comprising:

informing, via the user interface, the user if the first amount exceeds the second amount by the predefined threshold.

4. The method as claimed in claim 1 , wherein said second size is smaller than or equal to 5 μm.

5. The method as claimed in claim 4 , wherein said second size is smaller than or equal to 2.5 μm.

6. The method as claimed in claim 1 , wherein said first size is smaller than or equal to 200 μm.

7. The method as claimed in claim 6 , wherein said first size is smaller than or equal to 10 μm.

8. The method of dust processing according to claim 1 , wherein the threshold trigger value is selected by a user depending on a predetermined cleanliness or hygiene level.

9. A dust processing system for carrying out the method according to claim 1 , the dust processing system comprising:

a vacuum cleaner or an air purifier;

a first particle sensor configured to measure a first amount of particles of up to a first size in an indoor area of interest prior to activation of the vacuum cleaner or an air purifier;

a second particle sensor configured to measure a second amount of particles of up to a second size in an indoor area of interest prior to activation of the vacuum cleaner or an air purifier, wherein the second size is smaller than the first size;

a control circuit in communication with the first and second particles sensors, wherein the control circuit is configured to determine whether the first amount exceeds the second amount by a predefined threshold in the indoor area of interest; and

wherein the control circuit is configured such that when the first amount is determined to exceed the second amount by the predefined threshold, the control circuit outputs a control signal that comprises a signal to (i) prompt, via a user interface of the dust processing system, a user to start a cleaning operation by activating the vacuum cleaner or the air purifier or (ii) to control an activation of the vacuum cleaner or the air purifier to start a cleaning operation of the respective vacuum cleaner or the air purifier in response to the control signal.

10. A dust processing system comprising:

the dust processing system as claimed in claim 9 , wherein the control circuit further comprises an output for providing a control signal indicating whether the first amount exceeds the second amount by the predefined threshold; and

wherein the vacuum cleaner or air purifier comprises an input for receiving the signal for controlling the activation of the vacuum cleaner or the air purifier.

11. The dust processing system as claimed in claim 9 , further comprising:

a user interface for informing the user if the first amount exceeds the second amount by the predefined threshold.

12. The dust processing system as claimed in claim 9 , wherein said second size is smaller than or equal to 5 μm.

13. The dust processing system as claimed in claim 9 , wherein said first size is smaller than or equal to 200 μm.

14. The dust processing system as claimed in claim 13 , wherein said first size is smaller than or equal to 10 μm.

15. The dust processing system as claimed in claim 10 , further comprising:

a user interface for informing the user if the first amount exceeds the second amount by the predefined threshold.

16. The dust processing system as claimed in claim 10 , wherein said second size is smaller than or equal to 5 μm.

17. The dust processing system as claimed in claim 10 , wherein said first size is smaller than or equal to 200 μm.

18. The dust processing system as claimed in claim 17 , wherein said first size is smaller than or equal to 10 μm.

19. The dust processing system as claimed in claim 9 , wherein the threshold trigger value is selected by a user depending on a predetermined cleanliness or hygiene level.

20. The dust processing system as claimed in claim 10 , wherein the threshold trigger value is selected by a user depending on a predetermined cleanliness or hygiene level.