EP2187793A1 - Verfahrbare vorrichtung zum durchführen von arbeiten an vorzugsweise ebenen flächen - Google Patents
Verfahrbare vorrichtung zum durchführen von arbeiten an vorzugsweise ebenen flächenInfo
- Publication number
- EP2187793A1 EP2187793A1 EP08803133A EP08803133A EP2187793A1 EP 2187793 A1 EP2187793 A1 EP 2187793A1 EP 08803133 A EP08803133 A EP 08803133A EP 08803133 A EP08803133 A EP 08803133A EP 2187793 A1 EP2187793 A1 EP 2187793A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- differential pressure
- suction
- unit
- motor current
- monitoring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012544 monitoring process Methods 0.000 claims abstract description 24
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000012806 monitoring device Methods 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L1/00—Cleaning windows
- A47L1/02—Power-driven machines or devices
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
- A47L2201/04—Automatic control of the travelling movement; Automatic obstacle detection
Definitions
- the invention relates to a movable device for performing work on preferably flat surfaces, in particular for cleaning windows in the form of an autonomous unit provided with a cleaning part, with a suction device for generating a negative pressure between the device and the surface, further comprising a safety device for preventing a detachment and subsequent crash of the device from the surface to be machined.
- Such a device is known, for example, from EP 1 237 456 B1, which generates an attractive force to the surface lying against it by the built-up negative pressure and in this way can move along obliquely extending or vertical surfaces.
- Such devices are used in particular for performing work on hard to reach areas, so for example, the cleaning of the outer surfaces of large buildings.
- the invention is therefore based on the object to improve a device of the type mentioned in that conditions or circumstances that can lead to a release of the device from the surface, are detected early in order to initiate appropriate countermeasures.
- a device which solves this problem is characterized by a monitoring unit for the self-adjusting differential pressure generated by the suction unit, the monitoring unit initiating countermeasures when the pressure falls below a predetermined pressure difference threshold.
- the advantage achieved by the invention is essentially that a change of the differential pressure to smaller values is detected early by the continuous monitoring, so that there is the possibility, early on, so before reaching a critical operating condition, to initiate appropriate countermeasures.
- the described monitoring can serve directly for triggering a fall arrestor, which, for example, mechanically couples to the surface.
- a fall arrestor which, for example, mechanically couples to the surface.
- the monitoring of the differential pressure is used as an additional security measure in connection with other measures for preventing falls.
- the monitoring unit for determining the differential pressure continuously detects the motor current of the suction device, wherein the differential pressure is determined from the characteristic curve representing the relationship between differential pressure and motor current of the suction unit.
- the characteristic curve is determined taking into account the design-related characteristics and flow conditions of the device. As a result, the specific properties of the device are taken directly into account.
- the monitoring unit recognizes the structure of the differential pressure when placing the device on the surface to be machined from the change in the motor current and signals the occurrence of the proper operating state. This can be done visually or acoustically and signal to the user whether the device is in "free-blowing" or in proper operating condition.
- the task of monitoring a device provided for working on preferably flat, obliquely or vertically extending surfaces against detachment and subsequent crash of the device from the surface to be processed, in particular for cleaning windows in the form of an autonomous unit provided with a cleaning part, with a suction device for generating a negative pressure between the device and the surface is achieved by detecting the motor current of the suction device by means of a monitoring unit and from this the device holding in contact with the surface differential pressure is determined, wherein falls below a minimum differential pressure, the detachment and subsequent crashes the device is triggered by the surface to be machined preventing safety device.
- the size of the motor current for triggering the safety device can be used directly in an advantageous manner, after usually a linear relationship between the motor current and differential pressure is observed.
- FIG. 2 shows a diagram of characteristic curves of a suction device designed as a fan as a function of the volume flow
- Fig. 3 shows the dependence of the differential pressure on the device of the current of the suction device to a specific embodiment.
- the movable device shown schematically in Fig. 1 is used to perform work on preferably flat surfaces 1, in particular for cleaning windows in the form of a provided with a cleaning part 6 autonomous unit. 2
- the device is provided with an only indicated drive unit 8 and with a suction device not shown for generating a negative pressure between the device and the surface 1. Furthermore, the device has a safety device for preventing detachment and subsequent crash of the device from the surface 1 to be processed.
- a monitoring unit for the adjusting, generated by the suction differential pressure, wherein the monitoring unit initiates countermeasures when falling below a predetermined pressure difference threshold, which serve to secure the device.
- a predetermined pressure difference threshold which serve to secure the device.
- the monitoring unit which may for example be arranged in a cavity 4 of the autonomous unit 2, is set up in such a way that it constantly detects the motor current of the suction device in order to determine the differential pressure.
- the differential pressure is then determined from the characteristic curve representing the relationship between the differential pressure and the motor current of the suction unit. 2 shows the characteristic curves of a fan used as a suction unit, as a function of the volume flow.
- the characteristic curve can be determined in individual cases, taking into account the design-related peculiarities and flow conditions of the device and thus take particular account of structural characteristics influencing the characteristic curve.
- a further advantageous possibility also for the operation monitoring of the device is that the monitoring unit recognizes when mounting the device on the surface to be machined from the change of the motor current the building up differential pressure, whereupon the occurrence of the proper operating state can be signaled. This can be done acoustically or optically; Another type of signal transmission is conceivable here, so that a remote monitoring is possible.
Landscapes
- Electric Vacuum Cleaner (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Cleaning In General (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007041067A DE102007041067A1 (de) | 2007-08-30 | 2007-08-30 | Verfahrbare Vorrichtung zum Durchführen von Arbeiten an vorzugsweise ebenen Flächen |
| PCT/EP2008/060962 WO2009027315A1 (de) | 2007-08-30 | 2008-08-21 | Verfahrbare vorrichtung zum durchführen von arbeiten an vorzugsweise ebenen flächen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2187793A1 true EP2187793A1 (de) | 2010-05-26 |
| EP2187793B1 EP2187793B1 (de) | 2012-04-18 |
Family
ID=40002948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08803133A Not-in-force EP2187793B1 (de) | 2007-08-30 | 2008-08-21 | Verfahrbare vorrichtung zum durchführen von arbeiten an vorzugsweise ebenen flächen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2187793B1 (de) |
| AT (1) | ATE553684T1 (de) |
| DE (1) | DE102007041067A1 (de) |
| WO (1) | WO2009027315A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106388688A (zh) * | 2016-10-17 | 2017-02-15 | 江苏美的清洁电器股份有限公司 | 擦窗机器人 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359197B (zh) * | 2012-04-05 | 2015-08-19 | 科沃斯机器人有限公司 | 擦玻璃装置及其行走控制方法 |
| CN107205594A (zh) * | 2015-11-10 | 2017-09-26 | 深圳市赛亿科技开发有限公司 | 一种擦玻璃机器人的吸附力动态调整方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5155885A (en) * | 1988-10-07 | 1992-10-20 | Hitachi, Ltd. | Vacuum cleaner and method for operating the same |
| DE69015557D1 (de) * | 1989-10-18 | 1995-02-09 | Hitachi Ltd | Staubsauger und Verfahren zum Regeln desselben. |
| JPH03294189A (ja) * | 1990-04-09 | 1991-12-25 | Toshiba Corp | 壁面走行ロボット |
| DE29822854U1 (de) * | 1998-03-11 | 1999-07-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 80636 München | Vorrichtung zum Fortbewegen an senkrechten, gewölbten und/oder geneigten Fassaden- und Glasflächen |
| DE19835038C1 (de) * | 1998-03-11 | 1999-07-01 | Fraunhofer Ges Forschung | Vorrichtung zum Fortbewegen an senkrechten, gewölbten und/oder geneigten Fassaden- und Glasflächen |
| DE19958890C1 (de) | 1999-12-07 | 2001-02-15 | Bsh Bosch Siemens Hausgeraete | Sicherheitseinrichtung für eine auf einer Fläche beweglichen Vorrichtung |
| DE10020503A1 (de) * | 2000-04-26 | 2001-10-31 | Bsh Bosch Siemens Hausgeraete | Vorrichtung zur Durchführung von Arbeiten an einer Fläche |
| US7113847B2 (en) * | 2002-05-07 | 2006-09-26 | Royal Appliance Mfg. Co. | Robotic vacuum with removable portable vacuum and semi-automated environment mapping |
| CN100496368C (zh) * | 2002-09-24 | 2009-06-10 | 三宅彻 | 擦窗装置 |
| DE10320570B4 (de) * | 2003-05-07 | 2005-04-21 | Unique Cleaning Systems Gmbh | Selbstkletterndes Fahrwerk für Fassaden, insbesondere Glasfassaden |
| DE10322201B3 (de) * | 2003-05-16 | 2004-08-26 | Taurus Instruments Gmbh | Vorrichtung zur automatischen Reinigung von Gebäudefassaden und ebenen Flächen |
-
2007
- 2007-08-30 DE DE102007041067A patent/DE102007041067A1/de not_active Withdrawn
-
2008
- 2008-08-21 AT AT08803133T patent/ATE553684T1/de active
- 2008-08-21 WO PCT/EP2008/060962 patent/WO2009027315A1/de not_active Ceased
- 2008-08-21 EP EP08803133A patent/EP2187793B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009027315A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106388688A (zh) * | 2016-10-17 | 2017-02-15 | 江苏美的清洁电器股份有限公司 | 擦窗机器人 |
| CN106388688B (zh) * | 2016-10-17 | 2020-06-19 | 江苏美的清洁电器股份有限公司 | 擦窗机器人 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE553684T1 (de) | 2012-05-15 |
| EP2187793B1 (de) | 2012-04-18 |
| DE102007041067A1 (de) | 2009-03-05 |
| WO2009027315A1 (de) | 2009-03-05 |
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