(19)
(11)EP 3 436 881 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
27.07.2022 Bulletin 2022/30

(21)Application number: 17775983.4

(22)Date of filing:  13.03.2017
(51)International Patent Classification (IPC): 
G05D 1/02(2020.01)
A47L 9/28(2006.01)
(52)Cooperative Patent Classification (CPC):
A47L 9/19; A47L 9/2805; A47L 9/2852; A47L 9/2894; G05D 1/0225; G05D 1/028; A47L 2201/00; G05D 2201/0215; A47L 7/0095
(86)International application number:
PCT/SE2017/050241
(87)International publication number:
WO 2017/171609 (05.10.2017 Gazette  2017/40)

(54)

INDUSTRIAL AUTOMATED VACUUM CLEANER AND METHOD FOR AUTOMATED SERVICING OF CONSTRUCTION TOOLS

AUTOMATISIERTER INDUSTRIESTAUBSAUGER UND VERFAHREN ZUR AUTOMATISIERTEN WARTUNG VON BAUWERKZEUGEN

ASPIRATEUR AUTOMATISÉ INDUSTRIEL ET PROCÉDÉ D'ENTRETIEN AUTOMATISÉ D'OUTILS DE CONSTRUCTION


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 31.03.2016 SE 1650422

(43)Date of publication of application:
06.02.2019 Bulletin 2019/06

(73)Proprietor: Husqvarna AB
561 82 Huskvarna (SE)

(72)Inventors:
  • ED, Joakim
    412 53 Göteborg (SE)
  • GUSTAFSSON, Lars
    545 90 Töreboda (SE)
  • ANDERSSON, Simon
    413 25 Göteborg (SE)
  • RAJINDER, Mehra
    121 48 Johanneshov (SE)
  • OLSSON, Tommy
    431 46 Mölndal (SE)
  • PETERSSON, Ulf
    448 50 Tollered (SE)
  • BÄLTER, Richard
    423 34 Torslanda (SE)


(56)References cited: : 
EP-A2- 1 712 970
WO-A1-2015/072624
US-A1- 2002 138 936
US-A1- 2013 055 521
WO-A1-2015/060672
US-A1- 2002 138 936
US-A1- 2010 199 453
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    TECHNICAL FIELD



    [0001] The teachings herein relates to industrial vacuum cleaners and more specifically to automated industrial vacuum cleaners configured for automated servicing of construction tools and a method for automated servicing of construction tools.

    BACKGROUND



    [0002] In construction sites or in other industrial work sites, a vacuum cleaner is a commonly used tool to remove debris or other remains of materials and/or dust which is generated by for instance construction tools. Some types of construction tools are configured to be connected to vacuum cleaners to ensure that the dust which is generated is collected at the source. This generally means that the construction tool comprises some type of means for collecting the produced dust and which often leads the dust to a dust ejection arrangement to which a vacuum cleaner tube can be connected. Since a construction site can be large and contain many different types of construction tools which require servicing and since there are often not as many vacuum cleaners as there are tools, it can be time consuming to find a vacuum cleaner that is not already in use. To assign one vacuum cleaner to each tool is costly.

    [0003] The document US 2010/199453 discloses a wireless particle collection system with a dust collector and at least one power tool coupled to the dust collector. The power tool is associated with a unique identifier contained in a wireless signal transmitted from the power tool upon activation of the tool. The unique identifier is recognized by the dust collector, and the dust collector activates or de-activates upon receipt of the wireless signal.

    [0004] Furthermore, as a vacuum cleaner is filled with dust or debris, production has to be stopped as the vacuum cleaner is emptied.

    [0005] Not all construction tools are stationary; for instance floor grinders are configured to move over the floor which it is working on to ensure that the surface is evenly grinded. For such applications, the tube connecting the grinder to the vacuum cleaner can end up being in the way of the grinder and an operator is therefore always needed to ensure that this situation does not occur. The operator often also needs to be able to see the construction tool more or less at all times during operation, which could be problematic when the vacuum cleaner ends up being in the way of the operators line of sight to the construction tool. Since it is always desirable to keep operators out of a harmful environment and to reduce the amount of dust which is allowed to be emitted from construction tools, it is desired to find a way to reduce the required amount of operator presence during certain procedures and to facilitate the provision of a vacuum cleaner so that an operator does not have to spend unnecessary time collecting one as soon as a dust generating construction tool is to be used.

    SUMMARY



    [0006] It is an object of the teachings herein to provide a vacuum cleaner, a construction tool, a construction system and a method for automated servicing of construction tools which alleviates some of the problems with prior art. This object is achieved by a concept having the features set forth in the appended independent claims; preferred embodiments thereof being defined in the related dependent claims.

    [0007] According to a first aspect, an automated vacuum cleaner is provided. The vacuum cleaner is configured for servicing at least one construction tool, wherein the vacuum cleaner comprises a vacuum inlet. The vacuum cleaner comprises a controller and connected to said controller a wireless transceiver, a memory, and at least one location and/or orientation sensor configured for detection of vacuum cleaner location and/or localization of other objects in relation to the vacuum cleaner. The vacuum cleaner further comprises means for propulsion controlled by said controller and wherein the automated vacuum cleaner is configured to upon receiving a wireless signal from a construction tool establish the location of said construction tool and to automatically relocate to facilitate servicing of the construction tool. The vacuum cleaner is thereby enabled to wirelessly communicate with construction tools, to locate these at least in relation to the vacuum cleaner position and to automatically move to the construction tool. This means that an operator does not have to spend time looking for a vacuum cleaner nor on collecting one.

    [0008] In one embodiment the vacuum cleaner further comprises a sensor for detecting level of dust in a dust container of said vacuum cleaner. The vacuum cleaner can thereby determine when to switch of suction and transmit wireless signals indicating full dust reservoir to the construction tool. The vacuum cleaner may also initiate an emptying sequence.

    [0009] In one embodiment, the vacuum cleaner inlet comprises an end portion configured for connection to a dust ejection arrangement on the construction tool. The vacuum cleaner may thereby automatically physically connect the vacuum inlet to the construction tool.

    [0010] In one embodiment, the vacuum cleaner vacuum inlet is an extendable tube. The vacuum cleaner further comprises a tube support and a stop which restricts withdrawal of said tube. The tube support ensures that the end portion of the tube is kept in the correct position for connection the construction tool dust ejection arrangement.

    [0011] In a second aspect of the teachings herein, a construction tool is provided. The construction tool is configured for connection to a vacuum cleaner and comprises a controller and connected to said controller a wireless transmitter and/or a wireless receiver, a memory and at least one location and/or orientation sensor. The construction tool may thereby communicate and request servicing by a vacuum cleaner.

    [0012] In one embodiment, the construction tool comprises a dust ejection arrangement configured for connection to an end portion of the vacuum inlet of said vacuum cleaner.

    [0013] In one embodiment the construction tool comprises means for propulsion controlled by said controller.

    [0014] In a third aspect of the teachings herein a construction system is provided. The system comprising a vacuum cleaner according to the first aspect and a construction tool according to the second aspect. The vacuum cleaner is configured to communicate wirelessly with at least one construction tool and to localize the position and orientation of said construction tool in relation to the vacuum cleaner position and orientation. The system is beneficial in that an operator of a construction tool does not need to look for a vacuum cleaner, as the vacuum cleaner is configured to locate and move to the construction tool upon receiving a servicing request.

    [0015] In one embodiment, the system further comprises a server configured to wirelessly communicate with the vacuum cleaner and the at least one construction tool. The server, which may be connected to the internet, allows communication over larger distances or when for instance walls are present which obstructs regular RF communication between the vacuum cleaner and the construction tool.

    [0016] In one embodiment, the system further comprises a construction tool control device wirelessly connected to the construction tool for remote control of said construction tool by an operator, and wherein the vacuum cleaner is configured to ensure that it does not linger in any location that is located in the line of sight between the construction tool control device and the construction tool. This means that the vacuum cleaner avoids moving for extended periods of time in the operator's line of sight to the construction tool, which is beneficial since it improves the operators ability to remote control the construction tool.

    [0017] According to a fourth aspect of the teachings herein, a method for automated servicing of construction tools is provided. The method comprises; transmitting a wireless signal by the construction tool wherein said wireless signal is a servicing request, receiving of said wireless signal by a vacuum cleaner and determining by the controller in the vacuum cleaner the location and/or orientation of said construction tool in relation to the location and/or orientation of the vacuum cleaner. Whereby the vacuum cleaner is configured to relocate to a location and/or orientation determined by the vacuum cleaner controller. The method removes the time consuming task of trying to find a vacuum cleaner before using a construction tool which also results in that a vacuum cleaner is more often used. This improves the air quality of work sites.

    [0018] According to one embodiment, the vacuum cleaner is configured to approach the construction tool such that the vacuum inlet is connected to the dust ejection arrangement of the construction tool which transmitted the servicing request. The vacuum cleaner thereby automatically physically connects to the construction tool.

    [0019] According to one embodiment, the vacuum cleaner is configured to wirelessly connect to the construction tool upon receival of a servicing request from said construction tool and wherein the vacuum cleaner continuously monitors and moves in order to essentially maintain the position and/or orientation of the connected construction tool in relation to the vacuum cleaner. The vacuum cleaner is thereby able to follow the construction tool which is advantageous for instance in floor grinding applications where the construction tool i.e. the floor grinder continuously moves on the floor surface.

    [0020] According to one embodiment, the vacuum cleaner is configured to monitor the level of dust collected in the dust container of said vacuum cleaner, and upon indication of the container being filled beyond a threshold value, transmit a wireless signal indicating full reservoir. When said signal is received by the construction tool, this results in the construction tool being stopped whereby the vacuum cleaner is configured to stop suction and physically disconnect from the construction tool. Thereby is overfilling of the vacuum cleaner avoided, which enables optimal suction performance of the connected vacuum cleaner.

    [0021] According to one embodiment, the vacuum cleaner is configured to store a position of a dust container emptying position and upon detection of the dust container of said vacuum cleaner being filled, move the vacuum cleaner to said emptying position. The operator does thereby not have to manually remove the vacuum cleaner and take it to a suitable emptying location which saves valuable time for the operator.

    [0022] According to one embodiment, the vacuum cleaner is configured to switch on suction during the last segment of the approach to a construction tool in order to facilitate connection between the inlet and the dust ejection arrangement of the construction tool.

    [0023] According to one embodiment, the vacuum cleaner is configured to use the at least one location and/or orientation sensor to detect and avoid obstacles during movements of said vacuum cleaner. This enables the vacuum cleaner to avoid obstacles and avoid getting stuck on items lying on the floor.

    [0024] In an embodiment of the teachings herein, the vacuum cleaner detects a position of a construction tool control device and is configured to ensure that it does not linger in any location that is located in the line of sight between the construction tool control device and the construction tool. The vacuum cleaner will therefore not obstruct the view of the construction tool for the operator holding the control device.

    [0025] In one embodiment, at least one vacuum cleaner and at least one construction tool can be wirelessly paired, thereby allowing wireless communication between paired units. Through the pairing, which may be performed by operator initiation or beforehand by the manufacturer, can wireless communication between the vacuum cleaner and the construction tool be established. This also means that units which are not paired cannot receive or interpret the wireless signals transmitted from the vacuum cleaner and/or the construction tool.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0026] Embodiments of the teachings herein will be described in further detail in the following with reference to the accompanying drawings which illustrate non-limiting examples on how the embodiments can be reduced into practice and in which:

    Fig. 1 shows an example outline of an automated vacuum cleaner and a construction tool according to one embodiment,

    Fig. 2 shows a functional outline of an automated vacuum cleaner according to one embodiment,

    Fig. 3 shows a functional outline of a construction tool according to one embodiment,

    Fig. 4 shows a an example outline of an automated vacuum cleaner and a construction tool according to one embodiment,

    Fig. 5 shows an example outline of a construction system according to one embodiment,

    Fig. 6 shows a method for automated servicing of a construction tool according to one embodiment.


    DETAILED DESCRIPTION OF EMBODIMENTS



    [0027] The disclosed embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the invention are shown. Like numbers refer to like elements throughout.

    [0028] Fig. 1 shows schematically a robotic work tool 1, in this example an automated vacuum cleaner 1, and a construction tool 2. The vacuum cleaner 1 is preferably an industrial vacuum cleaner, configured for industrial use and for removing saw dust or other types of unwanted materials. The vacuum cleaner 1 comprises a power source, such as corded electrical power, a battery, an internal combustion engine etc configured to provide power for the propulsion of the vacuum cleaner 1 and/or for powering movements of functional parts of the vacuum cleaner 1. The construction tool 2 may be any type of saw or other wood working machine, a floor grinder or any other type of construction tool which requires or allows connection of a vacuum cleaner. The construction tool 2 may comprise a working element, such as a grinder, a saw, etc. The construction tool 2 further comprises a power source, such as corded electrical power, a battery, an internal combustion engine etc configured to power the working element, drive system, and/or other functional components of the construction tool 2.

    [0029] In one embodiment the vacuum cleaner 1 is configured to physically connect to the construction tool 2 via the vacuum inlet 3. The vacuum cleaner 1 may also be configured to track the route that the construction tool 2 has travelled to collect the dust which has been produced by the construction tool 2. This is particularly useful when the construction tool 2 lacks a dust ejection arrangement 21 adapted for connecting to a vacuum cleaner vacuum inlet 3, and instead relies on that the generated dust is vacuumed from the floor surface. In this mode of operation of the vacuum cleaner 1, it is typically fitted with a mouthpiece adapted for vacuuming floor surfaces. The vacuum cleaner 1 does not necessarily have to travel the exactly in the same path and in the same order/direction as the construction tool 2 has travelled. It may be configured to store the construction tool path information and then determine the optimal route both regarding time efficiency and to ensure that the vacuum cleaner 1 does not end up being in the way of the construction tool 2.

    [0030] In Fig.1 the vacuum cleaner 1 and the construction tool 2 is shown in a disconnected state, where the construction tool 2 is not in need of being serviced by a vacuum cleaner 1. The vacuum inlet 3 is thus not connected to the construction tool 2. The vacuum cleaner 1 and the construction tool 2 are configured to communicate wirelessly, whereby the construction tool may for instance transmit a servicing request which can be recognized by the vacuum cleaner 1.

    [0031] The vacuum cleaner 1 may comprises a vacuum inlet 3 being an extendable tube 3, which can be extracted and withdrawn and a stop 4 is arranged to stop withdrawal of the tube 3 to ensure that an end portion 6 of the tube 3 is held in a position suitable for connection to a dust ejection arrangement 21 of the construction tool. The vacuum cleaner 1 may also comprise a tube support 5, configured to support the free end portion 6 of the tube 3 and to make sure that the end portion 3 is held in a correct position for connection the dust ejection arrangement 21. As can also be seen in Fig.1, the vacuum cleaner 1 comprises wheels to enable movement of the vacuum cleaner, and the wheels may in turn be connected to means for propulsion, i.e. electrical motors for pivoting and/or rotation of said wheels. The construction tool may also comprise wheels. Naturally, the end portion 6 of the vacuum cleaner 1 is configured to be positioned at a vertical height which corresponds to the vertical height of the dust ejection arrangement 21 of a connectable construction tool.

    [0032] With reference to Fig. 2, a functional outline of an embodiment of the vacuum cleaner 1 shown. The vacuum cleaner 1 comprises a controller 8, which may be constituted by any suitable central processing unit CPU, microcontroller, Digital Signal Processor DSP, etc., capable of executing computer program code. The controller 8 may be implemented using instructions that enable hardware functionality, for example, by using executable computer program instructions in a general-purpose or special-purpose processor that may be stored on a computer readable storage medium (disk, memory etc.) 12 to be executed by such a processor. The controller 8 may be implemented using any suitable, publically available processor or Programmable Logic Circuit (PLC). The memory 12 may be implemented using any commonly known technology for computer-readable memories such as ROM, RAM, SRAM, DRAM, FLASH, DDR, SDRAM or some other memory technology. The controller 8 is connected to a wireless communication interface 10 comprising a wireless transceiver 10, configured to transmit and receive wireless signals. A separate transmitter and receiver could also be applied. Examples of such wireless technologies are IEEE 802.11, IEEE 802.15, ZigBee, WirelessHART, WIFI, Bluetooth®, W-CDMA/HSPA, GSM, UTRAN and LTE to name a few. It should be noted that other technologies exist and are taken to be an obvious equivalent for such wireless communication interfaces. The wireless signals are preferably RF signals such as WIFI, Bluetooth, etc. Furthermore, the vacuum cleaner 1 comprises a memory 12 connected to the controller 8, said memory being configured to electronically store information from other components of the vacuum cleaner. For localization and orientation of the vacuum cleaner 1 in relation to other objects, at least one location and/or orientation sensor 11 is provided. The at least one location sensor 11 may include at least one of a camera sensor, a laser sensor, a radar sensor, a GPS-device, a inertial navigation system, a gyroscopic sensor. To detect the relative position of a construction tool wirelessly transferring a servicing request, a multiple antenna receiver may be used in the vacuum cleaner 1, thus enabling calculation of time difference of arrival TDOA of the signals and also enabling calculation of angle of arrival AOA. Signal strength may also be used for calculation of wherefrom a servicing signal originates and distance from the source. The vacuum cleaner 1 further comprises means for propulsion 13 as mentioned above, which are controlled by the controller 8 to move the vacuum cleaner 1 to a destination determined by the controller 8.

    [0033] In order to monitor that the amount of dust collected in a dust reservoir of the vacuum cleaner 1 does not exceed a threshold value, the vacuum cleaner 1 may comprise a sensor 9 for detection of the dust level. The sensor 9 being connected to the controller 8. Such a sensor 9 may be constituted by a scale, a filter sensor etc.

    [0034] Turning to Fig. 3, which shows a functional outline of a construction tool 2 according to one embodiment. The construction tool 2 comprises a controller 22, and connected to said controller 22 a wireless transceiver 25. As mentioned earlier, the transceiver may be constituted by a transmitter and a receiver as separate units. The construction tool 2 further comprises a memory 24 connected to the controller 22 and at least one location and/or orientation sensor 23 also connected to the controller 22. The sensor 23 is configured to at least detect the orientation of the construction tool 2, which will allow the controller 22 to incorporate the information in the transmittal of the servicing request and also transmit orientation information alone. This facilitates the automatic connection of the vacuum cleaner 1 to the construction tool 2. The sensor may be a magnetometer, a solid state compass or other means for detection of the orientation of the construction tool 2.

    [0035] The construction tool 2 may further comprise means for propulsion 26, i.e. electrical motors controlling the rotation and/or the pivoting of the wheels of the construction tool 2. The means for propulsion 26 is connected to the controller 22 such that it may be controlled thereby. This enables for instance remote control of the construction tool 2, as is sometimes the case for instance for floor grinders.

    [0036] Fig. 4 shows a construction system according to an embodiment, the system comprising a vacuum cleaner 1 and a construction tool 2. The vacuum cleaner 1 is configured to communicate wirelessly with at least one construction tool 2 and to localize the position and orientation of said construction tool 2 in relation to the vacuum cleaner 1 position and orientation which allows it to by the means for propulsion move and connect the vacuum inlet 3 to the dust ejection arrangement 21 of the construction tool 2. As it is common that the number of construction tools 2 is higher than the number of vacuum cleaners 1 on a work site, the vacuum cleaner 1 is by the teachings herein enabled to automatically travel between different construction tools 2 which facilitates servicing of a plurality of construction tools 2. The vacuum cleaner 1 may also follow a construction tool 2, in case the construction tool 2 is designed to move during operation. This is achieved through the wireless communication between the vacuum cleaner 1 and the construction tool 2 and through the at least one location and/or orientation sensor 11 of the vacuum cleaner and/or the location and/or orientation sensor 23 of the construction tool 2. As shown in Fig. 5, the construction system may comprise a server 14, such as a database server or a communications server which allows communication between the vacuum cleaner(s) 1 and the construction tool(s) 2a, 2b through said server 14 as well as directly communicating with each other. The server 14 may also be connected to the internet, allowing communication to other servers 14 for instance in another part of the building which is not reachable by means of direct RF wireless communication.

    [0037] Fig. 6 shows a method for automated servicing of a construction tool according to one embodiment. The method is illustrated as a flow chart, however it is to be noted that the various steps may be performed continuously and not necessarily in the order illustrated in Fig. 6.

    [0038] To establish wireless communication between the units in a construction system according to the teachings herein, the vacuum cleaner(s) 1 and the construction tool(s) may need to be paired which is a common procedure to establish wireless communication between units. This may include transmittal and receiving of an identifier and operator input may be required. Specifically, this may mean that when an operator brings a new vacuum cleaner 1 to a work site, the operator presses a pairing button which allows connection of the vacuum cleaner 1 to the construction tools 2 on the work site and enables them to transmit servicing requests to said vacuum cleaner 1. The pairing may also be performed beforehand by a manufacturer such that all construction tools and vacuum cleaners from a specific manufacturer are paired such that they are able to wirelessly communicate.

    [0039] The transmittal S2 of a servicing request may be performed automatically if a vacuum cleaner 1 is not already connected to a construction tool 2 when it is switched on. It may also be transmitted by means of an operator activating a servicing request button on a construction tool 2. The servicing request may include information regarding the orientation and/or the location of the construction tool 2. When it is received by the vacuum cleaner 1, the vacuum cleaner 1 determines the location and/or orientation of the construction tool in relation to the location of the vacuum cleaner 1. This is achieved as mentioned earlier through use of the at least one location and/or orientation sensors 11 on the vacuum cleaner 1. When the relative location/orientation of the construction tool 2 is determined, the vacuum cleaner 1 moves S4 by activation of the means for propulsion 13 such that the vacuum cleaner 1 approaches the construction equipment from the correct angle to allow the end portion 6 of the vacuum inlet 3 to connect to the dust ejection arrangement 21 of the construction tool 2. During movement of the vacuum cleaner 1, the at least one location and/or orientation sensor 11 may be configured to detect possible obstacles such as walls or staircases which are thereby possible to avoid through intervention by the controller 8 to steer the vacuum cleaner 1 away from these obstacles. To facilitate the last stage when the end portion 6 of the vacuum inlet 3 is to be connected to the dust ejection arrangement 21, the suction may be switched on by the controller 8 to allow the suction to connect the two and to correct eventual minor movement/orientation errors by the vacuum cleaner 1 and/or the construction tool.

    [0040] The vacuum cleaner 1 may also be configured to wirelessly connect to the construction tool 2 upon receiving of a servicing request from the construction tool 2. This allows said vacuum cleaner 1 to continuously monitor and move to essentially maintain the position and/or orientation of the connected construction tool 2 in relation to the vacuum cleaner 1. This allows the vacuum cleaner 1 to follow the construction tool 2 as it is moved. The construction tool 2 may be configured to detect by means of the location and/or orientation sensors 23 when the construction tool 2 is moved and to wirelessly communicate this to the connected vacuum cleaner 1 to allow it to move accordingly. Once the vacuum cleaner 1 is physically connected to the construction tool 2, the construction tool 2 may be configured to transmit a wireless signal when a operator uses the tool 2 whereby the vacuum cleaner 1 starts suction and also when the operator stops using the tool 2.

    [0041] The vacuum cleaner 1 may also be configured to monitor S5 the dust level in a dust container of said vacuum cleaner 1. This allows it to decide when a certain dust level threshold value is reached upon which the vacuum cleaner 1 may transmit a wireless signal indicating full reservoir which, when received by the construction tool 2, results in that the construction tool 2 stops, whereby the vacuum cleaner 1 may be configured to stop suction and physically disconnect from the construction tool 2. The vacuum cleaner 1 may also be configured to store a position of a dust container emptying position and upon detection of the dust container of said vacuum cleaner 1 being filled, move the vacuum cleaner 1 to said emptying position. This may be achieved by for instance storing a GPS location or by means of RF localization by the vacuum cleaner 1.

    [0042] It should be mentioned that the inventive concept is by no means limited to the embodiments described herein, and several modifications are feasible without departing from the scope of the invention as defined in the appended claims. For instance, the automated servicing may be applied for instance for grass collectors which are configured to automatically follow and collect grass which is cut by a lawn mower as will be described briefly below.

    [0043] In one embodiment a first power tool is configured for servicing at least a second power tool, said first power tool comprising an extendable tube, said first power tool further comprises a stop which restricts withdrawal of said tube, said tube comprises an end portion configured for connection to an ejection arrangement on the second power tool, wherein said first power tool further comprises a controller and connected to said controller a wireless transceiver, a memory, and at least one location and/or orientation sensor configured for detection of first power tool location and/or localization of other objects and wherein the first power tool further comprises means for propulsion controlled by said controller. In one embodiment a power tool system is provided comprising a first power tool and a second power tool. The first power tool is configured to communicate wirelessly with at least one second power tool and to localize the position and orientation of said second power tool in relation to the first power tool position and orientation.

    [0044] In one embodiment the first power tool is a grass collector or a vacuum cleaner arranged to collect grass and the second power tool is a robotic lawn mower arranged to cut grass. The ejection arrangement is a grass ejection arrangement.

    [0045] In one embodiment the first power tool is an ice collector or a vacuum cleaner arranged to collect ice and the second power tool is a ice resurface arranged to clean and smooth the surface of an ice sheet.

    [0046] In one embodiment the first power tool is a golf ball collector or a vacuum cleaner arranged to collect golf balls and the second power tool is a robotic lawn mower arranged to cut grass. The ejection arrangement is a golf ball ejection arrangement.

    [0047] As has been disclosed in the above, the teachings of this application thus provide for an automated vacuum cleaner that is configured to service a construction tool by relocating its own position in order to align with the construction tool so that it vacuums the dust products generated by the construction tool. In the embodiment where the construction tool is a floor grinder (or sander) the vacuum cleaner services the floor grinder by vacuuming the floor area treated by the floor grinder.

    [0048] The vacuum cleaner may relocate relative the construction tool by adapting its propulsion and following the construction tool as the construction tool moves, so that the vacuum cleaner targets the construction tool and follows behind, immediately or at distance, the construction tool in order to service the area as the area is treated and without risking that any dust or other debris is spread - for example by passer bys - before it can be cleaned.

    [0049] The vacuum cleaner may alternatively or additionally be configured to follow the construction tool as the construction tool moves by recording a path taken by the construction tool through receiving position information of the construction tool and to cover the same path as the construction tool. The floor grinder transmits its position continuously or at regular intervals to the vacuum cleaner, who tracks the progress of the floor grinder and records the path taken. As the vacuum cleaner is then set to service the floor grinder it relocates itself by following the same path taken by the floor grinder. This ensures that the same path is treated by both machines, even if the vacuum cleaner is not set to operate at the same time as the floor grinder, which allows one vacuum cleaner to service more than one floor grinder.

    [0050] In order to enable a vacuum cleaner to service the same area as the floor grinder, but necessarily to in the same order - to allow for other work to be done in some areas or by following a more optimal path from the vacuum cleaner's current position, the vacuum cleaner may be configured to follow the construction tool as the construction tool moves by recording an area covered by the construction tool through receiving position information of the construction tool and to cover the same area as the construction tool. As when recording a path, the vacuum cleaner may record an area and then determine its own propulsion to cover the same area - although not necessarily along the same path.

    [0051] To enable a more close servicing, the inlet of the vacuum cleaner may comprise an end portion 6 configured for connection to a dust ejection arrangement 21 on the construction tool 2, and wherein the vacuum cleaner 1 is configured to relocate by attaching the end portion 6 of the inlet 3 to the dust ejection arrangement 21 on the construction tool 2. This allows the vacuum cleaner to physically connect to the construction tool so that is may vacuum directly at the operating area or active area of the floor grinder. This ensures a highly effective vacuuming.

    [0052] To prevent that the vacuum cleaner is prematurely separated from the floor grinder, the vacuum inlet 3 is an extendable tube 3, and the vacuum cleaner 1 further comprises a tube support 5 and a stop 4 which restricts withdrawal of said tube 3.

    [0053] In one embodiment the navigation sensor is a location sensor configured for detection of a vacuum cleaner location for enabling the vacuum cleaner to navigate according to its present location. This allows the vacuum cleaner to follow a recorded path or travel to a determined position, such as the location of the construction tool.

    [0054] In one embodiment the navigation sensor is an orientation sensor 11 configured for detection of localization of other objects in relation to the vacuum cleaner 1 for enabling the vacuum cleaner to navigate according to surrounding objects. This enables the vacuum cleaner to adapt its travel based on detecting objects that may not have been present when the construction tool was operating and also allows the vacuum cleaner to navigate without getting stuck or otherwise obstructed by furniture, structures or other objects.

    [0055] As has been mentioned, the vacuum cleaner may also comprise a sensor 9 for detecting level of dust in a dust container of said vacuum cleaner 1. The vacuum cleaner 1 is configured to detect when a dust level exceeds a threshold level and in response thereto move a dust dumping station. This allows the vacuum cleaner to follow and service a floor grinder for as long as it ha the capacity to collect dust. As the vacuum cleaner is full, it may undock or otherwise interrupt the following of the floor grinder, travel to a dumping station, empty or replace its dust container and then return to continue servicing the floor grinder, by chasing down the floor grinder, by following the same path or covering the same area as that covered by the floor grinder.

    [0056] The floor grinder, or other construction tool that is configured for being serviced by an automated vacuum cleaner 1is thus configured to transmit its location to the automated vacuum cleaner 1 to enable relocation of the automated vacuum cleaner 1.

    [0057] As has been touched upon in the above a vacuum cleaner may thus be wirelessly paired to one or more construction tools. This allows one vacuum to service more than one construction tool, especially useful when the vacuum cleaner is arranged to cover a same path or area as the construction tool. The vacuum cleaner can then be set to operate after the construction tool ahs been used, for example at night, and then cover more than one construction tool.

    [0058] Likewise, one construction tool may be paired with more than one vacuum cleaner, the vacuum cleaners then being enabled to take turns in servicing one and the same construction tool, or doing so at the same time for high capacity construction tools. This also enables the vacuum cleaners to operate in a manner that is optimized based on the closest construction tool or covered area based on the vacuum cleaner's' positions.


    Claims

    1. Automated vacuum cleaner configured for servicing at least one construction tool (2), said vacuum cleaner (1) comprising a vacuum inlet (3), a controller (8) and connected to said controller (8) a wireless transceiver (10), and a memory (12), characterized in that the vacuum cleaner (1) further comprises at least one navigation sensor, the vacuum cleaner (1) further comprises means for propulsion (13) controlled by said controller (8), and wherein the automated vacuum cleaner (1) is configured to upon receiving a wireless signal from a construction tool (2) establish the location of said construction tool (2) and to automatically relocate to facilitate servicing of the construction tool (2).
     
    2. Automated vacuum cleaner according to claim 1, wherein the vacuum cleaner (1) is configured to relocate by adapting its propulsion and following the construction tool as the construction tool moves.
     
    3. Automated vacuum cleaner according to claim 2, wherein the vacuum cleaner (1) is configured to follow the construction tool as the construction tool moves by recording a path taken by the construction tool through receiving position information of the construction tool and to cover the same path as the construction tool.
     
    4. Automated vacuum cleaner according to claim 2, wherein the vacuum cleaner (1) is configured to follow the construction tool as the construction tool moves by recording an area covered by the construction tool through receiving position information of the construction tool and to cover the same area as the construction tool.
     
    5. Automated vacuum cleaner according to any of the preceding claims, wherein the inlet (3) comprises an end portion (6) configured for connection to a dust ejection arrangement (21) on the construction tool (2), and wherein the vacuum cleaner (1) is configured to relocate by attaching the end portion (6) of the inlet (3) to the dust ejection arrangement (21) on the construction tool (2).
     
    6. Automated vacuum cleaner according to any of the preceding claims, wherein the vacuum cleaner (1) further comprises a sensor (9) for detecting level of dust in a dust container of said vacuum cleaner (1) and wherein the vacuum cleaner (1) is configured to detect when a dust level exceeds a threshold level and in response thereto move a dust dumping station.
     
    7. Construction tool configured for being serviced by an automated vacuum cleaner (1) according to any of the preceding claims, the construction tool (2) comprising a controller (22) and connected to said controller (22) a wireless transmitter (25), characterized in that the construction tool (2) further comprises a memory (24) and at least one location and/or orientation sensor (23) connected to the controller (22), wherein the construction tool is configured to transmit its location to the automated vacuum cleaner (1) to enable relocation of the automated vacuum cleaner (1).
     
    8. Construction system, the system comprising an automated vacuum cleaner (1) according to any one of claims 1 to 6 and at least one construction tool (2) according to claim 7, wherein the vacuum cleaner (1) is configured to communicate wirelessly with the at least one construction tool (2) for servicing the at least one construction tool (2).
     
    9. Construction system according to claim 8, wherein the system further comprises a server (14) configured to wirelessly communicate with the automated vacuum cleaner (1) and the at least one construction tool (2).
     
    10. Construction system according to any one of claims 8 and 9, wherein the system further comprises a construction tool control device (15) wirelessly connected to the construction tool (2) for remote control of said construction tool (2) by an operator, and wherein the vacuum cleaner (1) is configured to ensure that it does not linger in any location that is located in the line of sight between the construction tool control device (15) and the construction tool (2).
     
    11. Method for automated servicing of construction tools, wherein the method comprises; transmitting a wireless signal by the construction tool (2) wherein said wireless signal is a servicing request, receiving said wireless signal by a vacuum cleaner (1), characterized in that the method further comprises determining by the controller (8) the location and/or orientation of said construction tool (2) in relation to the location and/or orientation of the vacuum cleaner (1) by analyzing the servicing request, whereby the vacuum cleaner (1) is configured to relocate to a location and/or orientation determined by the vacuum cleaner controller (8).
     
    12. Method for automated servicing of construction tools according to claim 11, wherein the vacuum cleaner (1) is configured to wirelessly connect to the construction tool (2) upon reception of a servicing request from said construction tool (2), and wherein said vacuum cleaner (1) continuously monitors and moves in order to essentially maintain the position and/or orientation of the connected construction tool (2) in relation to the vacuum cleaner (1).
     
    13. The method for automated servicing of construction tools according to any one of claims 11-12, wherein the vacuum cleaner (1) is configured to monitor the level of dust collected in the dust container of said vacuum cleaner, and upon indication of the container being filled beyond a threshold value, transmit a wireless signal indicating full reservoir which, when received by the construction tool (2), results in that the construction tool (2) stops, whereby the vacuum cleaner (1) is configured to stop suction and physically disconnect from the construction tool (2).
     
    14. The method for automated servicing of construction tools according to any one of claims 11 to 13, wherein the vacuum cleaner (1) is configured to switch on suction during the last segment of the approach to a construction tool (2) in order to facilitate connection between a vacuum inlet (3) of the vacuum cleaner and a dust ejection arrangement (21) of the construction tool (2).
     
    15. Method for automated servicing of construction tools according to any one of claims 11 to 14, wherein the vacuum cleaner (1) detects a position of a construction tool control device (15) and is configured to ensure that it does not linger in any location that is located in the line of sight between the construction tool control device (15) and the construction tool (2).
     


    Ansprüche

    1. Automatisierter Staubsauger, der zum Instandhalten mindestens eines Bauwerkzeugs (2) ausgelegt ist, wobei der Staubsauger (1) einen Vakuumeinlass (3), eine Steuerung (8) und, verbunden mit der Steuerung (8), einen drahtlosen Sendeempfänger (10) und einen Speicher (12) umfasst, dadurch gekennzeichnet, dass der Staubsauger (1) ferner mindestens einen Navigationssensor umfasst, wobei der Staubsauger (1) ferner durch die Steuerung (8) gesteuerte Mittel für einen Antrieb (13) umfasst, und wobei der automatisierte Staubsauger (1) dazu ausgelegt ist, bei Empfangen eines drahtlosen Signals von einem Bauwerkzeug (2) die Lage des Bauwerkzeugs (2) zu ermitteln und sich automatisch zu verlagern, um ein Instandhalten des Bauwerkzeugs (2) zu erleichtern.
     
    2. Automatisierter Staubsauger nach Anspruch 1, wobei der Staubsauger (1) dazu ausgelegt ist, sich durch Anpassen seines Antriebs und Folgen dem Bauwerkzeug, während sich das Bauwerkzeug bewegt, zu verlagern.
     
    3. Automatisierter Staubsauger nach Anspruch 2, wobei der Staubsauger (1) dazu ausgelegt ist, dem Bauwerkzeug durch Aufzeichnen eines Wegs, der durch das Bauwerkzeug genommen wird, durch Empfangen einer Positionsinformation des Bauwerkzeugs zu folgen, während sich das Bauwerkzeug bewegt, und denselben Weg wie das Bauwerkzeug abzudecken.
     
    4. Automatisierter Staubsauger nach Anspruch 2, wobei der Staubsauger (1) dazu ausgelegt ist, dem Bauwerkzeug durch Aufzeichnen einer Fläche, die durch das Bauwerkzeug abgedeckt wird, durch Empfangen einer Positionsinformation des Bauwerkzeugs zu folgen, während sich das Bauwerkzeug bewegt, und dieselbe Fläche wie das Bauwerkzeug abzudecken.
     
    5. Automatisierter Staubsauger nach einem der vorhergehenden Ansprüche, wobei der Einlass (3) einen Endabschnitt (6) umfasst, der zur Verbindung mit einer Staubauswurfanordnung (21) an dem Bauwerkzeug (2) ausgelegt ist, und wobei der Staubsauger (1) dazu ausgelegt ist, sich durch Anbringen des Endabschnitts (6) des Einlasses (3) an der Staubauswurfanordnung (21) an dem Bauwerkzeug (2) zu verlagern.
     
    6. Automatisierter Staubsauger nach einem der vorhergehenden Ansprüche, wobei der Staubsauger (1) ferner einen Sensor (9) zum Detektieren eines Füllstands an Staub in einem Staubbehälter des Staubsaugers (1) umfasst und wobei der Staubsauger (1) dazu ausgelegt ist, zu detektieren, wenn ein Staubfüllstand einen Schwellenfüllstand überschreitet, und in Reaktion darauf eine Staubdeponiestation zu bewegen.
     
    7. Bauwerkzeug, das dazu ausgelegt ist, durch einen automatisierten Staubsauger (1) nach einem der vorhergehenden Ansprüche instandgehalten zu werden, wobei das Bauwerkzeug (2) eine Steuerung (22) und, verbunden mit der Steuerung (22), einen drahtlosen Sender (25) umfasst, dadurch gekennzeichnet, dass das Bauwerkzeug (2) ferner einen Speicher (24) und mindestens einen mit der Steuerung (22) verbundenen Lage- und/oder Ausrichtungssensor (23) umfasst, wobei das Bauwerkzeug dazu ausgelegt ist, seine Lage an den automatisierten Staubsauger (1) zu übertragen, um eine Verlagerung des automatisierten Staubsaugers (1) zu ermöglichen.
     
    8. Bausystem, wobei das System einen automatisierten Staubsauger (1) nach einem der Ansprüche 1 bis 6 und mindestens ein Bauwerkzeug (2) nach Anspruch 7 umfasst, wobei der Staubsauger (1) dazu ausgelegt ist, drahtlos mit dem mindestens einen Bauwerkzeug (2) zum Instandhalten des mindestens einen Bauwerkzeugs (2) zu kommunizieren.
     
    9. Bausystem nach Anspruch 8, wobei das System ferner einen Server (14) umfasst, der dazu ausgelegt ist, drahtlos mit dem automatisierten Staubsauger (1) und dem mindestens einen Bauwerkzeug (2) zu kommunizieren.
     
    10. Bausystem nach einem der Ansprüche 8 und 9, wobei das System ferner eine Bauwerkzeugsteuervorrichtung (15) umfasst, die drahtlos mit dem Bauwerkzeug (2) zur Fernsteuerung des Bauwerkzeugs (2) durch einen Bediener verbunden ist, und wobei der Staubsauger (1) dazu ausgelegt ist, sicherzustellen, dass er sich nicht in einer Lage aufhält, der sich in der Sichtlinie zwischen der Bauwerkzeugsteuervorrichtung (15) und dem Bauwerkzeug (2) befindet.
     
    11. Verfahren zum automatisierten Instandhalten von Bauwerkzeugen, wobei das Verfahren umfasst; Übertragen eines drahtlosen Signals durch das Bauwerkzeug (2), wobei das drahtlose Signal eine Instandhaltungsanforderung ist, Empfangen des drahtlosen Signals durch einen Staubsauger (1), dadurch gekennzeichnet, dass das Verfahren ferner Bestimmen, durch die Steuerung (8), der Lage und/oder Ausrichtung des Bauwerkzeugs (2) in Relation zu der Lage und/oder Ausrichtung des Staubsaugers (1) durch Analysieren der Instandhaltungsanforderung umfasst, wobei der Staubsauger (1) dazu ausgelegt ist, sich zu einer Lage und/oder Ausrichtung zu verlagern, die durch die Staubsaugersteuerung (8) bestimmt wird.
     
    12. Verfahren zum automatisierten Instandhalten von Bauwerkzeugen nach Anspruch 11, wobei der Staubsauger (1) dazu ausgelegt ist, sich drahtlos mit dem Bauwerkzeug (2) bei Empfang einer Instandhaltungsanforderung von dem Bauwerkzeug (2) zu verbinden, und wobei der Staubsauger (1) kontinuierlich überwacht und sich bewegt, um die Position und/oder Ausrichtung des verbundenen Bauwerkzeugs (2) in Relation zu dem Staubsauger (1) im Wesentlichen aufrechtzuerhalten.
     
    13. Verfahren zum automatisierten Instandhalten von Bauwerkzeugen nach einem der Ansprüche 11-12, wobei der Staubsauger (1) dazu ausgelegt ist, den Füllstand an in dem Staubbehälter des Staubsaugers gesammeltem Staub zu überwachen und, bei Anzeige, dass der Behälter über einen Schwellenwert hinaus gefüllt ist, ein drahtloses Signal zu übertragen, das einen vollen Behälter anzeigt, das, wenn es durch das Bauwerkzeug (2) empfangen wird, dazu führt, dass das Bauwerkzeug (2) stoppt, wobei der Staubsauger (1) dazu ausgelegt ist, eine Ansaugung zu stoppen und sich physisch von dem Bauwerkzeug (2) zu trennen.
     
    14. Verfahren zum automatisierten Instandhalten von Bauwerkzeugen nach einem der Ansprüche 11 bis 13, wobei der Staubsauger (1) dazu ausgelegt ist, eine Ansaugung während des letzten Segments der Annäherung an ein Bauwerkzeug (2) einzuschalten, um die Verbindung zwischen einem Vakuumeinlass (3) des Staubsaugers und einer Staubauswurfeinrichtung (21) des Bauwerkzeugs (2) zu erleichtern.
     
    15. Verfahren zum automatisierten Instandhalten von Bauwerkzeugen nach einem der Ansprüche 11 bis 14, wobei der Staubsauger (1) eine Position einer Bauwerkzeugsteuervorrichtung (15) detektiert und dazu ausgelegt ist, sicherzustellen, dass er sich nicht in einer Lage aufhält, die sich in der Sichtlinie zwischen der Bauwerkzeugsteuervorrichtung (15) und dem Bauwerkzeug (2) befindet.
     


    Revendications

    1. Aspirateur automatisé configuré pour l'entretien d'au moins un outil de construction (2), ledit aspirateur (1) comprenant une entrée de vide (3), un dispositif de commande (8) et connecté audit dispositif de commande (8) un émetteur-récepteur sans fil (10), et une mémoire (12), caractérisé en ce que l'aspirateur (1) comprend en outre au moins un capteur de navigation, l'aspirateur (1) comprend en outre des moyens de propulsion (13) commandés par ledit dispositif de commande (8), et l'aspirateur (1) automatisé étant configuré pour, à réception d'un signal sans fil en provenance d'un outil de construction (2), établir l'emplacement dudit outil de construction (2) et pour se replacer automatiquement afin de faciliter l'entretien de l'outil de construction (2).
     
    2. Aspirateur automatisé selon la revendication 1, l'aspirateur (1) étant configuré pour se replacer en adaptant sa propulsion et suivre l'outil de construction à mesure que l'outil de construction se déplace.
     
    3. Aspirateur automatisé selon la revendication 2, l'aspirateur (1) étant configuré pour suivre l'outil de construction à mesure que l'outil de construction se déplace en enregistrant un trajet emprunté par l'outil de construction par réception d'informations de position de l'outil de construction et pour couvrir le même trajet que l'outil de construction.
     
    4. Aspirateur automatisé selon la revendication 2, l'aspirateur (1) étant configuré pour suivre l'outil de construction à mesure que l'outil de construction se déplace en enregistrant une zone couverte par l'outil de construction par réception d'informations de position de l'outil de construction et pour couvrir la même zone que l'outil de construction.
     
    5. Aspirateur automatisé selon l'une quelconque des revendications précédentes, dans lequel l'entrée (3) comprend une portion d'extrémité (6) configurée pour un raccordement à un agencement d'éjection de poussière (21) sur l'outil de construction (2), et l'aspirateur (1) étant configuré pour se replacer en attachant la portion d'extrémité (6) de l'entrée (3) à l'agencement d'éjection de poussière (21) sur l'outil de construction (2).
     
    6. Aspirateur automatisé selon l'une quelconque des revendications précédentes, l'aspirateur (1) comprenant en outre un capteur (9) pour détecter un niveau de poussière dans un récipient à poussière dudit aspirateur (1) et l'aspirateur (1) étant configuré pour détecter quand un niveau de poussière dépasse un niveau seuil et en réponse à cela, déplacer une station de décharge de poussière.
     
    7. Outil de construction configuré pour être entretenu par un aspirateur (1) automatisé selon l'une quelconque des revendications précédentes, l'outil de construction (2) comprenant un dispositif de commande (22) et connecté audit dispositif de commande (22) un émetteur sans fil (25), caractérisé en ce que l'outil de construction (2) comprend en outre une mémoire (24) et au moins un capteur d'emplacement et/ou d'orientation (23) connecté au dispositif de commande (22), l'outil de construction étant configuré pour transmettre son emplacement à l'aspirateur (1) automatisé afin de permettre le replacement de l'aspirateur (1) automatisé.
     
    8. Système de construction, le système comprenant un aspirateur (1) automatisé selon l'une quelconque des revendications 1 à 6 et au moins un outil de construction (2) selon la revendication 7, dans lequel l'aspirateur (1) est configuré pour communiquer sans fil avec l'au moins un outil de construction (2) pour entretenir l'au moins un outil de construction (2).
     
    9. Système de construction selon la revendication 8, le système comprenant en outre un serveur (14) configuré pour communiquer sans fil avec l'aspirateur (1) automatisé et l'au moins un outil de construction (2).
     
    10. Système de construction selon l'une quelconque des revendications 8 et 9, le système comprenant en outre un dispositif de commande d'outil de construction (15) connecté sans fil à l'outil de construction (2) pour une commande à distance dudit outil de construction (2) par un opérateur, et dans lequel l'aspirateur (1) est configuré pour s'assurer qu'il ne s'attarde pas dans n'importe quel emplacement qui est placé dans la ligne de mire entre le dispositif de commande d'outil de construction (15) et l'outil de construction (2).
     
    11. Procédé d'entretien automatisé d'outils de construction, le procédé comprenant ; la transmission d'un signal sans fil par l'outil de construction (2), ledit signal sans fil étant une demande d'entretien, la réception dudit signal sans fil par un aspirateur (1), caractérisé en ce que le procédé comprend en outre la détermination par le dispositif de commande (8) de l'emplacement et/ou de l'orientation dudit outil de construction (2) par rapport à l'emplacement et/ou l'orientation de l'aspirateur (1) en analysant la demande d'entretien, l'aspirateur (1) étant configuré pour se replacer à un emplacement et/ou une orientation déterminé(e) par le dispositif de commande d'aspirateur (8) .
     
    12. Procédé d'entretien automatisé d'outils de construction selon la revendication 11, dans lequel l'aspirateur (1) est configuré pour se connecter sans fil à l'outil de construction (2) à réception d'une demande d'entretien en provenance dudit outil de construction (2), et ledit aspirateur (1) surveillant et se déplaçant en continu afin de maintenir essentiellement la position et/ou l'orientation de l'outil de construction (2) connecté par rapport à l'aspirateur (1).
     
    13. Procédé d'entretien automatisé d'outils de construction selon l'une quelconque des revendications 11 à 12, dans lequel l'aspirateur (1) est configuré pour surveiller le niveau de poussière collectée dans le récipient à poussière dudit aspirateur, et à indication du remplissage du récipient au-delà d'une valeur seuil, transmettre un signal sans fil indiquant un réservoir plein qui, quand il est reçu par l'outil de construction (2), a pour résultat que l'outil de construction (2) s'arrête, l'aspirateur (1) étant configuré pour arrêter la succion et se déconnecter physiquement de l'outil de construction (2).
     
    14. Procédé d'entretien automatisé d'outils de construction selon l'une quelconque des revendications 11 à 13, dans lequel l'aspirateur (1) est configuré pour commuter en succion pendant le dernier segment de l'approche vers un outil de construction (2) afin de faciliter la connexion entre une entrée de vide (3) de l'aspirateur et un agencement d'éjection de poussière (21) de l'outil de construction (2).
     
    15. Procédé d'entretien automatisé d'outils de construction selon l'une quelconque des revendications 11 à 14, dans lequel l'aspirateur (1) détecte une position d'un dispositif de commande d'outil de construction (15) et est configuré pour s'assurer qu'il ne s'attarde pas dans n'importe quel emplacement qui est placé dans la ligne de mire entre le dispositif de commande d'outil de construction (15) et l'outil de construction (2).
     




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    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description