WO2022189691A1 - Solution permettant de détecter au moins une personne de maintenance à proximité d'un système de transport de personnes - Google Patents

Solution permettant de détecter au moins une personne de maintenance à proximité d'un système de transport de personnes Download PDF

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Publication number
WO2022189691A1
WO2022189691A1 PCT/FI2021/050167 FI2021050167W WO2022189691A1 WO 2022189691 A1 WO2022189691 A1 WO 2022189691A1 FI 2021050167 W FI2021050167 W FI 2021050167W WO 2022189691 A1 WO2022189691 A1 WO 2022189691A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio
conveyor system
people conveyor
control unit
maintenance
Prior art date
Application number
PCT/FI2021/050167
Other languages
English (en)
Inventor
Matti Mustonen
Original Assignee
Kone Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kone Corporation filed Critical Kone Corporation
Priority to PCT/FI2021/050167 priority Critical patent/WO2022189691A1/fr
Publication of WO2022189691A1 publication Critical patent/WO2022189691A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B25/00—Control of escalators or moving walkways
    • B66B25/006—Monitoring for maintenance or repair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0025—Devices monitoring the operating condition of the elevator system for maintenance or repair
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals

Definitions

  • the invention concerns in general the technical field of people conveyor sys tems. Especially the invention concerns services of people conveyor systems.
  • a remote monitoring unit may receive continu ously, i.e. around the clock, information from one or more people conveyor systems, e.g. elevator systems, escalator systems, and/or moving walkaway systems.
  • the remote monitoring unit may receive fault codes from the one or more people conveyor systems and generate automatic ser vice needs, based on the received fault codes, e.g. to maintenance personnel.
  • one or more maintenance operations may cause generation of one or more unneces sary fault codes to the remote monitoring unit.
  • These unnecessary fault codes may lead to the generation of unnecessary automatic service needs. Therefore, the unnecessary fault codes may decrease the accuracy of the generated service needs and increase unnecessary maintenance visits.
  • a method for detecting at least one maintenance person in a proximity of a people conveyor system comprises: scanning radio transmissions from radio devices residing within a radio range of at least one radio node of the people conveyor system, wherein the radio transmissions from each radio device comprise at least a unique identifier (ID) assigned to said radio device; detecting at least one iden tified ID amongst the IDs comprised in the scanned radio transmissions, wherein the at least one identified ID belongs to at least one radio device car ried by the at least one maintenance person; and generating at least one first control signal comprising information representing the detection of the at least one maintenance person in the proximity of the people conveyor system to a remote monitoring unit.
  • ID unique identifier
  • the at least one first control signal may further comprise an instruction to ig nore subsequent fault codes from said people conveyor system.
  • the method may further comprise: continuing the scanning of the radio trans missions within the radio range of the at least one radio node of the people conveyor system after generating the at least first control signal, detecting end ing of the radio transmissions from the radio device to which the at least one identified ID belongs, and generating at least one second control signal com prising information representing an exit of the at least one maintenance person from the proximity of the people conveyor system to the remote monitoring unit.
  • the at least one second control signal may further comprise an instruction to terminate the ignoring of the subsequent fault codes from said people convey or system.
  • the radio transmissions from the radio devices may be based on at least one short-range wireless radio technology.
  • the at least one identified ID may be designated during one or more learning phases, wherein the one or more learning phases may comprise: scanning the radio transmissions from the radio devices residing within the radio range of the at least one radio node of the people conveyor system during a plurality of maintenance modes of the people conveyor system, detecting at least one ra dio transmission from the same radio device during a predefined number of the maintenance modes of the people conveyor system, and designating the ID comprised in the detected at least one radio transmission from the same radio device as one of the at least one identified ID.
  • the people conveyor system may be an elevator system, an escalator system, or a moving walkaway system.
  • the method may further comprise detecting that the elevator system is operating in the maintenance mode by detecting at least one deviation in a drive motion profile of at least one elevator car of the elevator system, wherein the at least one de viation in the drive motion profile may indicate at least one maintenance relat ed operation.
  • a control unit for detecting at least one mainte nance person in a proximity of an people conveyor system
  • the control unit comprises: a processing unit, and a memory unit comprising a computer program code, wherein the memory unit and the computer pro gram code are configured to, with the processing unit, cause the control unit at least to: scan radio transmissions from radio devices residing within a radio range of at least one radio node of the people conveyor system, wherein the radio transmissions from each radio device comprise at least a unique identifi er (ID) assigned to said radio device; detect at least one identified ID amongst the IDs comprised in the scanned radio transmissions, wherein the at least one identified ID belongs to at least one radio device carried by the at least one maintenance person; and generate at least one first control signal comprising information representing the detection of the at least one maintenance person in the proximity of the people conveyor system to a remote monitoring unit.
  • the at least one first control signal may further comprise an instruction to ig nore subsequent fault codes from said people conveyor
  • the control unit may further be configured to: continue the scanning of the ra dio transmissions within the radio range of the at least one radio node of the people conveyor system after generating the at least first control signal, de tect ending of the radio transmissions from the radio device to which the at least one identified ID belongs, and generate at least one second control sig nal comprising information representing an exit of the at least one mainte nance person from the proximity of the people conveyor system to the remote monitoring unit.
  • the at least one second control signal may further comprise an instruction to terminate the ignoring of the subsequent fault codes from said people convey or system.
  • the radio transmissions from the radio devices may be based on at least one short-range wireless radio technology.
  • the control unit may be configured to designate the at least one identified ID during one or more learning phases, wherein the one or more learning phases may comprise: scanning the radio transmissions from the radio devices resid ing within the radio range of the at least one radio node of the people conveyor system during a plurality of maintenance modes of the people conveyor sys tem, detecting at least one radio transmission from the same radio device dur ing a predefined number of the maintenance modes of the people conveyor system, and designating the ID comprised in the detected at least one radio transmission from the same radio device as one of the at least one identified ID.
  • the one or more learning phases may comprise: scanning the radio transmissions from the radio devices resid ing within the radio range of the at least one radio node of the people conveyor system during a plurality of maintenance modes of the people conveyor sys tem, detecting at least one radio transmission from the same radio device dur ing a predefined number of the maintenance modes of the people conveyor system, and designating the ID comprised in the detected at least one radio transmission from
  • the control unit may be implemented as a part of a control system of the peo ple conveyor system.
  • control unit may be implemented as a separate control unit arranged to the people conveyor system.
  • the people conveyor system may be an elevator system, an escalator system, or a moving walkaway system. Furthermore, if the people conveyor system is an elevator system and the con trol unit is implemented as the separate control unit arranged to the elevator system, the control unit may be configured to detect that the elevator system is operating in the maintenance mode by detecting at least one deviation in a drive motion profile of at least one elevator car of the elevator system, wherein the at least one deviation in the drive motion profile may indicate at least one maintenance related operation.
  • a people conveyor system for detecting at least one maintenance person in a proximity of the people conveyor system is pro vided, wherein the people conveyor system comprises: at least one conveying entity, at least one radio node, and a control unit as described above.
  • a computer program comprises instructions which, when the program is execut ed by a control unit as described above, cause the control unit to carry out the method as described above.
  • a tangible non-volatile computer-readable medium comprising the computer program as described above.
  • Figures 1A-1D illustrate schematically examples of a people conveyor system according to the invention.
  • Figure 2 illustrates schematically an example of a method according to the in vention.
  • Figure 3 illustrates schematically another example of a method according to the invention.
  • Figure 4 illustrates schematically yet another example of a method according to the invention.
  • Figure 5 illustrates schematically an example of components of a control unit according to the invention.
  • Figures 1A-1D illustrate schematically examples of a people conveyor system 100 according to the invention.
  • Figure 1A illustrates schematically a simple ex ample of the people conveyor system 100 according to the invention.
  • the people conveyor system 100 according to the invention comprises at least one conveying entity 102a-102c (for sake of clarity not shown in Figure 1A), a con trol unit 130, and at least one radio node (device) 120 arranged to the people conveyor system 100.
  • the people conveyor system 100 according to the in vention may further comprise or at least be associated with a remote monitor ing unit 140.
  • the people conveyor system 100 may be an elevator system 100a, an escalator system 100b, or a moving walkaway system 100c.
  • the control unit 130 may be implemented as a part of a control system 105 of the people conveyor system 100, 100a-100c.
  • the control unit 130 may be implemented as a separate control unit.
  • the monitoring unit 130 may be independent of the control system 105 of the people conveyor system 100, 100a-100c.
  • the separate control unit may be configured to obtain people conveyor system related data indirectly. For example, if the separate control unit is not able to communicate with the control system 105 of the peo ple conveyor system 100, 100a-100c, i.e.
  • the separate control unit may be configured to obtain people conveyor system related data directly from the control system 105 of the people conveyor system 100, 100a-100c, if the separate control unit is able communicate with the control system 105 of the people conveyor system 100, 100a-100c.
  • the separate control unit may comprise one or more sensor devic es configured to obtain the people conveyor system related data.
  • the one or more sensor devices may be internal and/or external to the separate control unit.
  • the one or more external sensor devices may be communicatively cou pled to the monitoring unit 130.
  • the implementation of the control unit 130 as the separate control unit may be preferable for example in implementations where there is no access to the communication interface of the control system 105 of the people conveyor system 100, 100a-100c, e.g. if the people convey or system 100, 100a-100c is a third party people conveyor system.
  • the com munication to and from the control unit 130 may be based on one or more known communication technologies, either wireless or wired, so that the com munication between the control unit 130 and any other entity may be estab lished as described throughout this application.
  • the implementation of the con trol unit 130 may be done as a stand-alone unit or as a distributed control envi ronment between a plurality of stand-alone units providing distributed control ling resource.
  • the remote monitoring unit 140 may be located on-site, i.e. at the people con veyor system 100, 100a-100c, or off-site, i.e. external to the people conveyor system 100, 100a-100c, e.g. cloud server -based remote monitoring unit.
  • the remote monitoring unit 140 may be e.g. a cloud server, a service center, a maintenance center, or a data center.
  • the remote monitoring unit 140 may re ceive fault codes from the people conveyor system 100, 100a-100c and gen erate, service needs e.g. maintenance orders, based on the received fault codes, for example to at least one maintenance person 150.
  • the control unit 130 and the remote monitoring unit 140 are communicatively coupled to each other.
  • the communication between the control unit 130 and the remote moni toring unit 140 may be based on one or more known communication technolo gies, either wired or wireless.
  • Each of the at least one radio node 120 may comprise a communication inter face unit for providing an interface for communication with any other unit, e.g. the control unit 130, radio devices 160a, 160b, one or more other radio nodes 120, and/or any other units.
  • the communication interface unit of each radio node 120 may comprise one or more communication devices e.g. at least one radio transceiver, at least one antenna, etc.
  • the communication interface unit of each radio node 120 may be based on at least one short-range wireless ra dio technology.
  • the at least one short-range wireless radio technology may comprise e.g., but is not limited to, Bluetooth, wireless local area network (WLAN), and/or Zigbee.
  • the one or more radio nodes 120 may be configured to receive and transmit radio transmissions from and to other radio devices 160a, 160b, e.g. a radio device 160a carried by at least one maintenance per son, e.g. a technician, 150, and/or a radio device 160b carried by a user 170 not being a maintenance person 150.
  • the control unit 130 and the at least one radio node 120 may be communicatively coupled to each other.
  • the communi cation between the control unit 130 and the at least one radio node 120 may be based on one or more known communication technologies, either wired or wireless.
  • the control unit 130 may itself comprise at least one radio node 120. This may be preferable especially if the control unit 130 is implemented as the separate control unit.
  • the at least one radio node 120 may be arranged to the people conveyor system 100, 100a-100c specifi cally for a detection of at least one maintenance person 150 in a proximity of the people conveyor system 100, 100a-100c according to the invention.
  • the at least one radio node 120 may be already existing at least one radio node 120 of the people conveyor system 100, 100a-100c, which may also be used, in addition to the detection of the at least one maintenance person 150 in the proximity of the people conveyor system 100, 100a-100c, for one or more other purposes in the people conveyor system 100, 100a-100c.
  • the people conveyor system 100, 100a-100c is an elevator system 100a.
  • the elevator system 100a comprises at least one eleva tor car 102a representing the at least one conveying entity 102a-102c config ured to travel along a respective at least one elevator shaft 104 between a plu rality of landings 106a-106n.
  • the elevator system 100a of the example of Fig ure 1B comprises one elevator car 102a travelling along one elevator shaft 104, however the elevator system 100a may also comprise an elevator group, i.e. group of two or more elevator cars 102a each travelling along a separate elevator shaft 104 configured to operate as a unit serving the same landings 106a-106n.
  • the control unit 130 may be implemented as the part of an eleva tor control system, e.g. an elevator control unit, 105 of the elevator system 100a as illustrated as a one example in the example of Figure 1B with solid lines.
  • the elevator control system 105 may be configured to control the opera tion of the elevator system 100a at least in part.
  • the elevator control system 105 may reside e.g. in a machine room (for sake of the clarity not shown in Figure 1B) or in one of the landings 106a-106n of the elevator system 100a.
  • the control unit 130 may be implemented as the separate control unit as illustrated as another example in the example of Figure 1 B with dashed lines.
  • the control unit 130 implemented as the separate control unit may be ar ranged to the elevator system 100a, e.g. to the elevator car 102a, preferably to the rooftop of the elevator car 102a.
  • the elevator system 100a may further comprise user interface devices 108, 110a-110n, 112, which enable interaction of users, such as passengers and/or maintenance personnel, with the elevator system 100a.
  • the user interface de vices 108, 110a-110n, 112 may comprise e.g. a car operating panel 108 ar ranged inside each elevator car 102a, a landing call panel 110a-110n arranged to each landing 106a-106n, and at least one maintenance panel 112, e.g. an inspection drive station, a maintenance access panel (MAP), test and emer gency panel, and/or any other maintenance or inspection related panels, for providing one or more maintenance, test, inspection and/or emergency opera tions of the elevator system 100a.
  • MAP maintenance access panel
  • the elevator sys tem 100a may further comprise one or more other maintenance panels 112.
  • the example maintenance panel 112 of the elevator system 100a of Figure 1 B is arranged inside the pit of the elevator shaft 104.
  • the one or more maintenance panels 112 may be arranged to the at least one elevator car 102a, inside a machine room, one or more landings 106a-106n, and/or any other location within the elevator system 100.
  • the at least one maintenance panel 112 shall be accessible to authorized persons only.
  • the user interface devices 108, 110a-110n, 112 may comprise input devices, e.g.
  • buttons, keyboard, touch screen, and similar for requesting a service from the elevator system 100a, i.e. for interacting with at least one user.
  • the requested service may e.g. refer to requesting a transportation from the elevator system 100, requesting opening/closing of elevator doors (car doors and/or landing doors), requesting a communication connection to a service center, indicating an emergency situation, and so on.
  • the user interface devices 108, 110a-110n, 112 may comprise one or more output devices, e.g. display, loudspeaker, touch screen, etc., for outputting information.
  • the elevator sys tem 100a may further comprise one or more other known elevator related enti ties, e.g. hoisting system, safety circuit and devices, elevator door system, etc., which are not shown in Figure 1 B for sake of clarity.
  • the at least one radio node 120 may for example be arranged to the at least one elevator car 102a, e.g. on the rooftop of the at least one elevator car 102a; the at least one maintenance panel 112; the car operating panel 108 of the elevator car 102a; at least one landing call device 110a-110n; and/or any other location of the el evator system 100.
  • the elevator system 100a comprises one or more wireless elevator call buttons or stations
  • at least one of the one or more wireless elevator call buttons or stations may comprise at least one radio node 120.
  • FIG 1B some non-limiting examples to arrange the at least one radio node 120 to the elevator system 100a are illustrated.
  • the example elevator system 100a of Figure 1B comprises one radio node 120 arranged to the at least one elevator car 102a, e.g. on the rooftop of the elevator car 102a, and one radio node 120 arranged to the maintenance panel 112.
  • Figure 1B illustrates only some non-limiting example of the at least one radio node 120 of the elevator system 100a, but the elevator system 100a according to the invention may comprise any other number of radio nodes 120 arranged to any location of the elevator system 100a.
  • the people conveyor system 100 is an escalator system 100b.
  • the escalator system 100b comprises the conveying entity 102b comprising steps arranged to an endless track, and an escalator control sys tem, e.g. an escalator control unit, 105.
  • the control unit 130 may be imple mented as the part of the escalator control system 105 of the escalator system 100b as illustrated as a one example in the example of Figure 1C with solid lines.
  • the escalator control system 105 may be configured to control the oper ation of the escalator system 100b at least in part.
  • the escalator control sys tem 105 may for example be arranged to one of platforms 114, 116 of the es calator system 100b.
  • the escalator control system 105 is arranged to a first platform, i.e. a top platform, 114 of the escalator sys tem 100b.
  • the escalator control system 105 may be arranged for example to a second platform, i.e. a bottom platform, 116 of the escalator sys tem 100b.
  • the control unit 130 may be implemented as the sepa- rate control unit as illustrated as another example in the example of Figure 1C with dashed lines.
  • the control unit 130 implemented as the separate control unit may be arranged to the escalator system 100b, e.g. to the first platform 114 of the escalator system 100b.
  • the escalator system 100b may further comprise one or more other known escalator related entities, e.g. a driving machine, etc., which are not shown in Figure 1C for sake of clarity.
  • Next ex ample locations of the at least one radio node 120 are discussed, when the people conveyor system 100 is the escalator system 100b.
  • the at least one radio node 120 may for example be arranged to the escalator control system 105, the first platform 114, the second platform 116, and/or any other location of the escalator system 100b.
  • Figure 1C a non-limiting example to arrange the at least one radio node 120 to the escalator system 100b is illustrated.
  • the example escalator system 100b of Figure 1C comprises one radio node 120 arranged to the bottom platform 116 of the escalator system 100b.
  • Figure 1C illustrates only one non-limiting example of the at least one radio node 120 of the escalator system 100b, but the escalator system 100b according to the invention may comprise any other number of radio nodes 120 arranged to any locations of the escalator system 100b.
  • the people conveyor system 100 is a moving walkaway system 100c.
  • the moving walkaway system 100c comprises the conveying entity 102c comprising pallets arranged to an endless track, and a moving walkaway control system, e.g. an moving walkaway control unit, 105.
  • the control unit 130 may be implemented as the part of the moving walkaway control system 105 of the moving walkaway system 100c as illustrated as a one example in the example of Figure 1D with solid lines.
  • the moving walka way control system 105 may be configured to control the operation of the mov ing walkaway system 100c at least in part.
  • the moving walkaway control sys tem 105 may for example be arranged to one of platforms 118, 122 of the moving walkaway system 100c.
  • the moving walk away control system 105 is arranged to a first platform, e.g. a top platform, 118 of the moving walkaway system 100c.
  • the moving walkaway con trol system 105 may be arranged for example to a second platform, e.g. a bot tom platform, 122 of the moving walkaway system 100c.
  • the moving walkaway system 100c is an inclined moving walkaway system, i.e. a moving walkaway system configured to convey people or load across an inclined plane, e.g. between two floors.
  • the moving walk- away system 100c according to the invention may also be a horizontal moving walkaway system, i.e.
  • control unit 130 may be implemented as the separate control unit as illustrated as another example in the example of Figure 1D with dashed lines.
  • the control unit 130 implemented as the separate control unit may be arranged to the moving walkaway system 100c, e.g. to the first platform 118 of moving walkaway system 100c.
  • the mov ing walkaway system 100c may further comprise one or more other known moving walkaway related entities, e.g. a driving machine, etc., which are not shown in Figure 1D for sake of clarity. Next example locations of the at least one radio node 120 are discussed, when the people conveyor system 100 is the moving walkaway system 100c.
  • the at least one radio node 120 may for example be arranged to the moving walkaway control system 105, the first platform 118, the second platform 122, and/or any other location of the moving walkaway system 100c.
  • Figure 1D a non-limiting example to arrange the at least one radio node 120 to the moving walkaway system 100c is illustrated.
  • the example moving walkaway system 100c of Figure 1 D comprises one radio node 120 arranged to the bottom platform 122 of the moving walkaway system 100c.
  • Figure 1D illustrates only one non-limiting example of the at least one radio node 120 of the moving walkaway system 100c, but the moving walkaway system 100c according to the invention may comprise any other number of radio nodes 120 arranged to any locations of the moving walkaway system 100c.
  • FIG. 2 an example of a method for detecting at least one mainte nance person 150, i.e. a presence of the at least one maintenance person 150, in a proximity of, i.e. nearby or close to, the people conveyor system 100, 100a-100c according to the invention is schematically illustrated.
  • the terms “proximity of the people conveyor system”, “nearby the people conveyor sys tem”, and/or “close to the people conveyor system” mean in the context of this application an area surrounding the people conveyor system 100, 100a-100c that may comprise one or more entities of the people conveyor system 100, 100a-100c.
  • the area surrounding the people conveyor system 100, 100a- 100c may cover e.g. the elevator shaft 104, the at least one elevator car 102c, the machine room, and/or one or more elevator hallways, the landings 106a- 106n, etc.
  • the control unit 130 scans, i.e. observes, radio transmissions from radio devices 160a, 160b residing within a radio range, i.e. a radio cover age, of the at least one radio node 120 of the people conveyor system 100, 100a-100c.
  • Each radio node 120 is capable to receive radio transmissions from other devices, e.g. from the radio device 160a, 160b, within its radio range.
  • the term radio range means an area within which the radio node 120 may receive the radio transmissions from the radio devices 160a, 160b.
  • a wider, part of the people conveyor system 100, 100a-100c may be covered by the radio ranges of the radio nodes 120, which in turn, may improve the accuracy of the reception of the radio transmissions from the radio devices 160a, 160b.
  • the radio devices 160a, 160b may for example be mobile terminal devices, e.g. mobile phones, tablet computers, etc.
  • the radio transmissions from the radio devices 160a, 160b may be based on at least one short-range wireless radio technology, e.g. Blue tooth, WLAN and/or Zigbee.
  • the radio transmissions from each radio device 160a, 160b comprise at least a unique identifier (ID) assigned, i.e. specific, to said radio device 160a, 160b, e.g.
  • ID unique identifier
  • the unique ID may depend on the used short-range wireless radio technology.
  • the at least one radio node 120 may provide the received radio transmissions to the control unit 130. Alternatively or in addition, the at least one radio node 120 may provide the IDs comprised in the radio transmissions to the control unit 130.
  • the scanning of the radio transmissions at the step 210 may comprise that the control unit 130 scans the IDs comprised in the radio transmissions from the radio devices 160a, 160b residing within the radio range of the at least one radio node 120 of the people conveyor system 100, 100a-100c.
  • the control unit 130 detects at least one identified, i.e. designat ed or appointed, ID amongst the IDs comprised in the scanned radio transmis sions.
  • the detected at least one identified ID belongs, i.e. is assigned, to at least one radio device 160a carried by the at least one maintenance person 150.
  • the radio device 160a carried by the maintenance person 150 resides within the radio range of the at least one ra dio node 120.
  • the ID belonging to the radio device 160a carried by the maintenance person 150 is an identified ID and the control unit 130 may detect the identified ID belonging to the radio device 160a carried by the maintenance person 150 amongst the IDs comprised in the scanned radio transmissions.
  • the maintenance person 150 may carry the radio device 160a for example in, but not limited to, a pocket, a bag, or a hand.
  • the radio device 160b carried by the user 170 resides within the ra dio range of the at least one radio node 120.
  • the ID belonging to the radio device 160b carried by the user 170 is not an identified ID.
  • the control unit 130 may perform one or more learning phases, i.e. learning periods, to identify, i.e. learn, the at least one ID belonging to the at least one radio device 160a of the at least one maintenance person 150. In other words, during the one or more learning phases the control unit 130 may identify the IDs belong ing to the radio devices 160a of the maintenance personnel 150, i.e.
  • control unit 130 may obtain ID data comprising the IDs belonging to the radio devices 160a of the maintenance personnel 150, i.e. to the radio devices 160a carried by the maintenance personnel.
  • the ID data may be obtained for example from one or more databases.
  • the control unit 130 in response to the detection of the at least one identified ID the control unit 130 generates at least one first control signal to the remote moni toring unit 140.
  • the at least one first control signal may comprise information representing the detection of the at least one maintenance person 150 in the proximity of the people conveyor system 100, 100a-100c. This enables a ubiq uitous and a simple method to detect the presence of the at least one mainte nance person 150 in the proximity of the people conveyor system 100, 100a- 100c.
  • the remote monitoring unit 140 may ignore, i.e. omit, subsequent fault codes from said people conveyor system 100, 100a-100c, i.e. from the people conveyor system 100, 100a-100c from which the at least one first control sig nal is received.
  • the at least one first control signal may further comprise an instruction for the remote monitoring unit 140 to ig nore subsequent fault codes from said people conveyor system 100, 100a- 100c, i.e. from the people conveyor system 100, 100a-100c from which the at least one first control signal is received.
  • the ignoring may comprise e.g.
  • Figure 3 illustrates schematically an example embodiment of the method ac cording to the invention.
  • the control unit 130 may continue the scanning of the radio transmissions, e.g. scanning of the IDs comprised in the radio transmissions, within the radio range of the at least one radio node 120 of the people conveyor system 100, 100a-100c after generating the at least first control signal to the remote monitoring unit 140 at the step 230.
  • the control unit 130 may detect ending of the radio transmis sions from the radio device 160a to which the at least one identified ID be longs. In other words, the control unit 130 may detect that the at least one identified ID is not detected amongst the IDs comprised in the scanned radio transmissions anymore.
  • the control unit 130 may generate at least one second control signal to the remote monitoring unit 140.
  • the at least one second control signal may comprise in formation representing an exit of the at least one maintenance person 150 from the proximity of the people conveyor system 100, 100a-100c.
  • the control unit 130 may apply a delay before generating the at least one second control signal. If the radio transmissions from the radio device 160a to which the at least one identified ID belongs are not detected during the delay, the control unit 130 may generate the at least one second control signal to the remote monitoring unit 140 to inform that the at least one maintenance person 150 has exited from the proximity of the people conveyor system 100, 100a-100c.
  • the control unit 130 does not generate the at least one second control signal to the remote monitoring unit 140. This indicates that the at least one maintenance person 150 has not actually exited from the proximity of the people conveyor system 100, 100a-100c. Instead for example a visibility, i.e. connection to or reception from, said radio device 160a may have been lost at least momentari ly.
  • the control unit 130 may ensure, i.e. confirm, that the at least one maintenance person 150 has actually exited from the proximity of the people conveyor system 100, 100a-100c.
  • the remote monitoring unit 140 may terminate the ignoring of the subsequent fault codes from said elevator system 100, i.e. from the people conveyor sys tem 100, 100a-100c from which the at least one second control signal is re ceived, in response to receiving the at least one second control signal from the control unit 130 of the people conveyor system 100, 100a-100c.
  • the at least one second control signal may further comprise an instruction for the remote monitoring unit 140 to terminate the ignoring of the subsequent fault codes from said people conveyor system 100, 100a-100c, i.e. from the people conveyor system 100, 100a-100c from which the at least one second control signal is received.
  • the at least one identified ID may be identified, i.e. designated or appointed, during the one or more learning phases, i.e. learning periods. At least one of the one or more learning phases may be per formed, i.e. at least one identified ID may be identified, before performing one or more of the method steps described above to be able to detect the at least one identified ID amongst the IDs comprised in the scanned radio transmis sions at the step 220 and 320. Further learning phase(s) may be performed at later stages to be able to identify at least one further identified ID belonging to at least one radio device 160a e.g. of another at least one maintenance person 150.
  • Figure 4 schematically illustrates an example of the one or more learning phases.
  • the control unit 130 may scan the radio transmissions from the radio devices 160a, 160b residing within the radio range of the at least one ra dio node 120 of the people conveyor system 100, 100a-100c during a plurality of maintenance modes of the people conveyor system 100, 100a-100c.
  • the control unit 130 scans the radio transmissions during a plurality of consecutive maintenance modes of the people conveyor system 100, 100a- 100c.
  • the plurality of consecutive maintenance modes of the people conveyor system 100, 100a-100c may be separated from each other e.g. by a period of time.
  • at least one maintenance related operation of the people conveyor system 100, 100a-100c may be performed, e.g. by the maintenance person 150 carrying the radio device 160a.
  • control unit 130 may detect the maintenance mode of the people conveyor system 100, 100a-100c, i.e. that the people conveyor system 100, 100a-100c is operating in the mainte nance mode, by detecting an activation of the maintenance mode, e.g. an acti vation of a maintenance mode switch.
  • the maintenance mode e.g. an acti vation of a maintenance mode switch.
  • control unit 130 detects the maintenance mode of the people conveyor system 100, 100a-100c, by obtain ing information indicating that the elevator system 100, 100a-100c is operating in the maintenance mode for example from the control system 105 of the peo ple conveyor system 100, 100a-100c.
  • the control unit 130 may detect the maintenance mode of the people conveyor system 100, i.e.
  • the elevator sys tem 100a indirectly by detecting at least one deviation in a drive motion profile of at least one elevator car 102a of the elevator system 100a, wherein the at least one deviation in the drive motion profile indicates at least one mainte nance related operation.
  • the control unit 130 may detect that the drive motion profile of the at least one elevator car 102a differs at least partly from a normal drive motion profile of the at least one elevator car 102a of the elevator system 100a.
  • the elevator car 102a accelerates from a station ary state to a constant speed state, e.g.
  • the acceleration may be increasing acceleration, decreas ing acceleration, and/or constant acceleration.
  • the deceleration may be increasing deceleration, decreasing deceleration, and/or constant decelera tion.
  • the at least one deviation in the drive motion profile of the at least one el evator car 102a indicating the at least one maintenance related operation may for example comprise, but is not limited to, slower constant speed, slower ac celeration, slower deceleration, and/or unexpected stop.
  • the scanning at the step 410 may further comprise storing the IDs comprised in the scanned radio transmissions during the plurality of maintenance modes of the people conveyor system 100, 100a-100c.
  • the IDs comprised in the scanned radio transmissions may be stored e.g. into a memory unit 520 of the control unit 130 and/or into an external memory unit.
  • the control unit 130 may be arranged to access the external storage unit and retrieve and store any in formation therefrom and thereto.
  • the control unit 130 may detect at least one radio transmission from the same radio device 160a during a predefined number of the mainte nance modes of the people conveyor system 100, 100a-100c. In other words, the control unit 130 may detect the same ID amongst the IDs comprised in the scanned radio transmissions during the predefined number of the maintenance modes of the people conveyor system 100, 100a-100c.
  • the predefined num ber may be e.g. at least two. According to a non-limiting example, if the prede fined number is e.g.
  • the control unit 130 may detect at least one radio transmission from the same radio device 160a during four maintenance modes of the people conveyor system 100, 100a-100c, preferably during four consec utive maintenance modes of the people conveyor system 100, 100a-100c.
  • the detection of the at least one radio transmission from the same radio device 160a during the predefined number of the maintenance modes of the people conveyor system 100, 100a-100c may indicate that said radio device 160a is carried by a maintenance person 150 e.g. during maintenance visits to the people conveyor system 100, 100a-100c.
  • the radio device 160a being present at the people conveyor system 100, 100a-100c the prede fined number of times, while the people conveyor system 100, 100a-100c is operating in the maintenance mode may indicate that the radio device 160a is carried by the at least one maintenance person 150.
  • the control unit 130 may designate the ID comprised in the de tected at least one radio transmission from the same radio device 160a as one of the at least one identified ID.
  • the ID comprised in the detect ed at least one radio transmission from the same radio device 160a may be identified to belong to the radio device 160a carried by the at least one maintenance person 150.
  • control unit 130 may generate the at least one first control signal comprising the in formation representing the detection of the at least one maintenance person 150 in the proximity of the people conveyor system 100, 100a-100c to the re mote monitoring unit 140 as discussed above referring to Figure 2.
  • the presence of the at least one maintenance person 150 in the proxim ity of the people conveyor system 100, 100a-100c may be detected by the control unit 130 already before the people conveyor system 100, 100a-100c is operating in the maintenance mode.
  • the detection of the exit of the at least one maintenance person from the proximity of the people conveyor sys tem 100a-100c may be detected by the control unit 130 as discussed above, even if the people conveyor system 100, 100a-100c is not operating in the maintenance mode.
  • control unit 130 may detect the exit of the at least one maintenance person 150 from the proximity of the people conveyor system 100, 100a-100c, although the people conveyor sys tem 100, 100a-100c is still operating in the maintenance mode, e.g. in a situa tion where the maintenance mode of the people conveyor system 100, 100a- 100c is not inactivated after completing the at least one maintenance related operation of the people conveyor system 100, 100a-100c.
  • FIG. 5 schematically illustrates an example of components of the control unit 130 according to the invention.
  • the control unit 130 may comprise a pro cessing unit 510 comprising one or more processors, a memory unit 520 com prising one or more memories, a communication interface unit 530 comprising one or more communication devices, and possibly a user interface (Ul) unit 540.
  • the mentioned elements may be communicatively coupled to each other with e.g. an internal bus.
  • the memory unit 520 may store and maintain por tions of a computer program (code) 525 and any other data, e.g. the at least one identified ID and/or the IDs comprised in the scanned radio transmissions during the plurality of maintenance modes of the people conveyor system 100, 100a-100c.
  • code computer program
  • the computer program 525 may comprise instructions which, when the computer program 525 is executed by the processing unit 510 of the control unit 130 may cause the processing unit 510, and thus the control unit 130 to carry out desired tasks, e.g. the operations of the control unit 130 and/or at least some of the method steps described above.
  • the processing unit 510 may thus be arranged to access the memory unit 520 and retrieve and store any information therefrom and thereto.
  • the pro cessor herein refers to any unit suitable for processing information and control the operation of the control unit 130, among other tasks.
  • the operations may also be implemented with a microcontroller solution with embedded software.
  • the memory unit 520 is not limited to a certain type of memory only, but any memory type suitable for storing the described pieces of information may be applied in the context of the present invention.
  • the communication in terface unit 530 provides an interface for communication with any external unit, e.g. the remote monitoring unit 140, the at least one node device 120, one or more databases, and/or any other external unit. If the control unit 130 is im plemented as the part of the control system 105 of the people conveyor sys tem 100, 100a-100c, the communication interface unit 530 may alternatively or in addition provide an interface for communication with the car operating de vice 108, the landing call devices 110a-110n, and/or the at least one mainte nance panel 112.
  • the communication interface unit 530 may be based on one or more known communication technologies, either wired or wireless, in order to exchange pieces of information.
  • the communication interface unit 530 may comprise one or more communication devices e.g. at least one radio trans DCver, at least one antenna, etc.
  • the one or more user interface units 540 may comprise one or more input/output (I/O) devices, such as buttons, key board, touch screen, microphone, loudspeaker, display and so on, for receiv ing user input and outputting information.
  • the control unit 130 may further comprise at least one radio node 120.
  • the at least one radio node 120 may be implemented as a part of the communication interface unit 530 or as a separate unit as in the example of Figure 5.
  • the computer pro gram 525 may be a computer program product that may be comprised in a tangible non-volatile (non-transitory) computer-readable medium bearing the computer program code 525 embodied therein for use with a computer, i.e. the control unit 130.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

L'invention concerne un procédé de détection d'au moins une personne de maintenance (150) à proximité d'un système de transport de personnes (100, 100a-100c). Le procédé consiste à : balayer (210) des émissions radio en provenance de dispositifs radio (160a, 160b) se trouvant à portée radio d'au moins un nœud radio (120, 120) du système de transport de personnes (100, 100a-100c), les émissions radio comprenant au moins un identifiant (ID) unique attribué audit dispositif radio (160a, 160b) ; détecter (220) au moins un ID identifié parmi les ID compris dans les émissions radio balayées, ledit ID identifié appartenant à au moins un dispositif radio (160a) porté par ladite personne de maintenance (150) ; et générer (230) au moins un premier signal de commande comprenant des informations représentant la détection de ladite personne de maintenance (150) à proximité du système de transport de personnes (100, 100a-100c) à destination d'une unité de surveillance à distance (140). L'invention concerne également une unité de commande, un système de transport de personnes (100, 100a-100c), un programme d'ordinateur et un support lisible par ordinateur permettant de détecter au moins une personne de maintenance (150) à proximité du système de transport de personnes (100, 100a-100c).
PCT/FI2021/050167 2021-03-08 2021-03-08 Solution permettant de détecter au moins une personne de maintenance à proximité d'un système de transport de personnes WO2022189691A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FI2021/050167 WO2022189691A1 (fr) 2021-03-08 2021-03-08 Solution permettant de détecter au moins une personne de maintenance à proximité d'un système de transport de personnes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2021/050167 WO2022189691A1 (fr) 2021-03-08 2021-03-08 Solution permettant de détecter au moins une personne de maintenance à proximité d'un système de transport de personnes

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080283342A1 (en) * 2004-11-09 2008-11-20 Romeo Deplazes Maintenance Method and Device for an Elevator or Escalator Installation
JP2019001572A (ja) * 2017-06-12 2019-01-10 株式会社日立ビルシステム エレベーターの報知装置
JP2019011160A (ja) * 2017-06-29 2019-01-24 株式会社日立ビルシステム エレベーター監視システム
JP2019018987A (ja) * 2017-07-20 2019-02-07 株式会社日立ビルシステム エレベーター報知制御システム及びエレベーター報知制御方法
EP3498648A2 (fr) * 2017-12-15 2019-06-19 Otis Elevator Company Maintenance de système de transport de passagers
US20190185293A1 (en) * 2017-12-15 2019-06-20 Otis Elevator Company Maintenance monitoring of passenger carrying system
WO2021165564A1 (fr) * 2020-02-19 2021-08-26 Kone Corporation Solution pour détecter une personne de maintenance dans une zone d'un équipement de flux de personnes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080283342A1 (en) * 2004-11-09 2008-11-20 Romeo Deplazes Maintenance Method and Device for an Elevator or Escalator Installation
JP2019001572A (ja) * 2017-06-12 2019-01-10 株式会社日立ビルシステム エレベーターの報知装置
JP2019011160A (ja) * 2017-06-29 2019-01-24 株式会社日立ビルシステム エレベーター監視システム
JP2019018987A (ja) * 2017-07-20 2019-02-07 株式会社日立ビルシステム エレベーター報知制御システム及びエレベーター報知制御方法
EP3498648A2 (fr) * 2017-12-15 2019-06-19 Otis Elevator Company Maintenance de système de transport de passagers
US20190185293A1 (en) * 2017-12-15 2019-06-20 Otis Elevator Company Maintenance monitoring of passenger carrying system
WO2021165564A1 (fr) * 2020-02-19 2021-08-26 Kone Corporation Solution pour détecter une personne de maintenance dans une zone d'un équipement de flux de personnes

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