FI127155B

FI127155B - Monitoring arrangement for a passenger carrier

Info

Publication number: FI127155B
Application number: FI20165937A
Authority: FI
Inventors: Simo Mäkimattila
Original assignee: Kone Corp; Kone Elevators Co Ltd
Priority date: 2016-12-08
Filing date: 2016-12-08
Publication date: 2017-12-15
Also published as: CN108190709B; FI20165937A; CN108190709A; CN207078895U

Description

A MONITORING ARRANGEMENT OF A PEOPLE MOVER

FIELD OF THE INVENTION

[0001] The invention relates to monitoring of a people mover, such as an escalator, an autowalk or a moving ramp.

BACKGROUND OF THE INVENTION

[0002] Escalators, auto walks and moving ramps are people movers, each of which typically comprises an endless band of conveying elements, such as steps or pallets for supporting the load to be transported, i.e. a person. The conveying element typically comprises rollers and a tread member with a tread surface on which a person can stand. The conventional people movers furthermore comprise elongated guide rails for guiding and supporting the rollers of the conveying elements. Said elongated guide rails typically comprise two first side guide rails for guiding and supporting the rollers of the conveying elements located on a first side of the conveying elements, and two second side guide rail for guiding and supporting the rollers of the conveying elements located on a second side of the conveying elements. The relative positioning of the guide rails can be used to control the tilt angle of the conveying element, whereby the people mover can comprise sections of different inclinations. The conveying elements are typically connected to each other by a chain on one or both sides of each step. It is typical that on one or both sides of each step, one roller of the step is coupled with a chain link. Thereby the chain becomes guided by the guide rollers as well.

[0003] People movers are typically equipped with a monitoring arrangement for monitoring and ensuring safe operation thereof. The monitoring arrangement can comprise a monitoring unit comprising electronic processing means such as a computer. The monitoring is typically implemented by aid of a sensing means connected with the monitoring unit. The people mover often comprises several different functions and components that are monitored by the sensing means. Much of the monitoring is needed for ensuring safety of the people and that the system is working as intended. Monitoring can also be useful for obtaining various pieces of information that can be useful for other purposes, such as for information for estimating need of maintenance and/or as information for making the operation more efficient and economical. Said sensing means typically comprise sensors that serve as the means by which the monitoring unit obtains first-hand information of the people mover.

[0004] It has been noticed that monitoring arrangements of prior art have not been adequately efficient in obtaining information. Typically there have been numerous different sensors for sensing state of different components and occurrence of different phenomena. Detection of a foreign object forced between the comb and a moving step, detection of step misalignment, detection of unsymmetrical wear of step chains, detection of missing roller, detection of a centrally standing passenger, detection of passenger movement on moving escalator have either been difficult to implement simply. Some of these have either not been detected at all or there has been numerous very different solutions for each of them.

[0005] Related prior art has been disclosed in documents JP S60195881 U, WO 2007111048 Al, JP H09263379 A, JP H0616377 A, JP S5443799 U, JP 2005330023 A and JP 2008239349 A.

BRIEF DESCRIPTION OF THE INVENTION

[0006] The object of the invention is to introduce a new people mover, which is improved in terms of its monitoring abilities. An object is to introduce a solution by which one or more of the above defined problems of prior art and/or problems discussed or implied elsewhere in the description can be solved. An object is particularly to introduce a multipurpose solution which is usable for sensing occurrence of one or more phenomena that are relevant for safety of the people mover operation, for control and analysis of the people flow, or for estimating the need of maintenance. Embodiments are presented, inter alia, which can be used for one or more of the following: detection of a foreign object forced between comb plate and a moving conveying element of the people mover, detection of misalignment of a conveying element, detection of unsymmetrical wear of chains connecting the conveying element of the people mover, detection of missing or misaligned roller, detection of passenger position, detection of passenger movement along the conveying elements of a moving people mover.

[0007] It is brought forward a new monitoring arrangement of a people mover, comprising an endless band of conveying elements, such as steps or pallets, each of the conveying elements comprising rollers and a tread member with a tread surface on which a person can stand; and plurality of elongated guide rails for guiding and supporting the rollers of the conveying elements; and a monitoring unit comprising electronic a processing means such as one or more microprocessors; and a sensing means connected with the monitoring unit. At least one of the guide rails comprises a guide rail section having an upper side on top of which a guide roller is arranged to run when the endless band of conveying elements is moved, which guide rail section comprises adjacent slots that are elongated in longitudinal direction of the guide rail and at a distance from each other in width direction of the guide rail, and a strip formed between each pair of adjacent slots in width direction of the guide rail, which strip is elongated in longitudinal direction of the guide rail, and said sensing means comprises a strain gauge fixed on the lower side of at least one of said strips and arranged to sense dimension changes of the strip in longitudinal direction of the guide rail, in particular dimension changes caused by a guide roller running over the guide rail section.

[0008] With this solution one or more of the above mentioned objects can be achieved. A smart guide rail structure is provided, which can obtain information that can be used for multiple alternative purposes. The dimension change caused by a guide roller, or the lack thereof, can indicate several things. A lacking dimension change, when a guide roller is or at least should be placed on top of the guide rail section being sensed, indicates that there is an issue of a missing guide roller, missing step or an excessive roller wear, or some other issue, for instance. An excessive dimension change on the other hand may indicate an overload situation, such as an object being wedged between moving parts of the people mover. Generally, the sensing can be used to trigger an emergency stop, an alarm signal, or as an input for an analysis so as to determine an optimal timing of a maintenance, for instance.

Preferable further details of the people mover are introduced in the following, which further details can be combined with the method individually or in any combination.

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In the following, the present invention will be described in more detail by way of example and with reference to the attached drawings, in which

Figure 1 illustrates a monitoring arrangement of a people mover comprising a conveying element and guide rails for the rollers of the conveying element.

Figure 2 illustrates a block diagram of the monitoring arrangement.

Figure 3 illustrates details of the monitoring arrangement as viewed in longitudinal direction of a guide rail.

Figure 4 illustrates details of the monitoring arrangement as viewed from below in normal direction of a guide rail.

Figure 5 illustrates a preferred embodiment of a strain gauge used in the monitoring arrangement.

Figure 6 illustrates an alternative configuration of the slots.

The foregoing aspects, features and advantages of the invention will be apparent from the drawings and the detailed description related thereto.

DETAILED DESCRIPTION

[0010] Figure 1 illustrates a monitoring arrangement of a people mover, comprising an endless band of conveying elements 1, such as steps or pallets, each of the conveying elements 1 comprising guide rollers 2a-2d and a tread member 3a with a tread surface 3a on which a person can stand; and a plurality of elongated guide rails 4a-4d for guiding and supporting the rollers 2a-2d of the conveying elements 1. For the sake of clarity, in Figure 1 only small length of the guide rails 4a-4d and only one conveying element 1 is presented as seen in normal direction N of the guide rails 4a-4d. The broken line illustrates the direction in which the conveying elements 1 are successively positioned. The arrow shows the direction of movement of the conveying elements 1. The successive conveying elements 1 can be connected to each other by at least one chain, as it is common in conventional people movers, for example. The people mover can be arranged to apply force for moving the conveying elements 1 by an electric motor connected with the aforementioned chain(s], for instance.

[0011] Said plurality of elongated guide rails 4a-4d comprises two first side guide rails 4a, 4b for guiding and supporting the guide rollers 2a,2b of the conveying elements 1 located on a first side of the conveying elements 1, and two second side guide rails 4a, 4b for guiding and supporting the guide rollers 2c,2d of the conveying elements 1 located on a second side of the conveying elements 1, said first and second side being opposite sides of the conveying elements 1 in width direction W of the people mover, which width direction W is horizontal direction and orthogonal to longitudinal direction L of the guide rails 4a-4d, and thereby also orthogonal to the direction L in which the conveying elements 1 are movable.

[0012] The monitoring arrangement further comprises a sensing means 6a-6d provided on at least one guide rail 4a, 4b, 4c, 4d, but preferably on each of them, for sensing force exerted on the guide rail 4a, 4b, 4c, 4d by a guide roller 2a, 2b, 2c, 2d of a conveying element 1.

[0013] The monitoring arrangement further comprises a monitoring unit 5 comprising electronic processing means such as one or more microprocessors e.g. a computer. The monitoring unit 5 is arranged to analyze signals received from the sensing means 6a-6d. For this purpose, said sensing means 6a-6d are connected with the monitoring unit 5, as illustrated in Figure 2.

[0014] As mentioned the aforementioned sensing means 6a-6d are provided on at least one guide rail 4a, 4b, 4c, 4d. The guide rail 4a-4d comprises a guide rail section 7 having an upper side 7a on top of which a guide roller 2a-2d is arranged to run when the endless band of conveying elements 1 is moved. Said guide rail section 7 comprises adjacent slots 8 that are elongated in longitudinal direction L of the guide rail 4a-4d and at a distance from each other in width direction W of the guide rail 4a-4d, and a strip 9 formed in width direction W of the guide rail 4a-4d between each pair of adjacent slots 8, which strip 9 is elongated in longitudinal direction L of the guide rail 4a-4d. Said sensing means 6a-6d comprises a strain gauge 10 fixed on the lower side 7b of at least one of said strips 9, and the strain gauge 10 is arranged to sense dimension changes of the strip 7 in longitudinal direction L of the guide rail 4a-4d, in particular dimension changes caused by a guide roller 2a-2d running over the guide rail section. Each said strain gauge 10 is connected with the monitoring unit 5. The Figures illustrate electrical wires protruding from each strain gauge 10, which wires can be electrically connected with the monitoring unit 5.

[0015] The longitudinal slots 8 increase bendability of the guide rail structure where the strain gauges 10 are fixed. The strip 9 formed between the each pair of adjacent slots 8 forms a bridge structure between portions of the guide rail 4a, 4b, 4c, 4d, which portions are on opposite sides of the slots 8 in longitudinal direction L of the guide rail 4a, 4b, 4c, 4d, and thereby between portions of the guide rail 4a, 4b, 4c, 4d that are devoid of slots 8. The arrangement can be implemented with only one strip 9, however having plurality of the strips 9 is preferable as this makes it possible to compare bending of adjacent strips 9. Based on differences of the bending sensed by the strain gauges 10, problems such as a worn guide guide roller, guide roller surface peel-off, misaligned or tilted guide roller can be identified. The strips 9 and the slots 8 being elongated in longitudinal direction L of the guide rail 4a-4d provides that bending of a relatively long portion of the path of the guide roller can be simply sensed with small number of strain gauges 10. The slots 8 are preferably oriented parallel with each other as well as the longitudinal direction L of the guide rail 4a-4d. The slots 8 are preferably straight.

[0016] The monitoring arrangement can further comprises a position sensor 11 for sensing position of a guide roller 2a-2d located on top of a guide rail section 7 at a point of a strain gauge 10, which position sensor 11 is also connected with the monitoring unit 5. This is however optional. The position sensor 11 is preferably further arranged to sense position of the roller 2a-2d in width direction W of the guide rail 4a-4d. Thus, effect of the roller position in said width direction W can be taken into account in the deductions to be performed based on the sensing. This is advantageous because roller position affects the way in which its weight is divided on the strips 9, and possibly also on parts of the guide rail not covered by the sensing. Preferably, the position sensor 11 is more specifically installed such that it is positioned beside the path of the guide roller 2a-2d. Preferably, it is directed to sense position of a central shaft s of the guide roller 2a-2d in question. As for the form of the position sensor 11, it is preferably a contactless sensor, such as a magnetic, capacitive or optical sensor.

[0017] The monitoring arrangement is arranged to perform one or more predefined actions based on dimension change sensed by one or more of the strain gauges 10. One preferred action is to stop the people mover. In this case, the monitoring arrangement is arranged to stop movement of the endless band of conveying elements 1 if a dimension change sensed by one or more of the strain gauges 10 exceeds a predetermined limit. Hereby, an overload situation can be detected and reacted to. This could prevent a dangerous situation from progressing, e.g. when an object being wedged between moving parts of the people mover. This kind of a situation is relevant particularly in proximity of a comb plate of the people mover. When implementing the solution to prevent this kind of situation, the sensing means 6a-6d should be provided on guide rail section that is located in proximity of a comb plate of the people mover.

[0018] Another preferred action is to stop movement of the endless band of conveying elements 1, or at least send a signal to a remote monitoring center if a dimension change sensed by one or more of the strain gauges 10 is below a predetermined limit, and the other signals received by the monitoring arrangement and/or other data indicates that a guide roller 2a-2d is located on top of a guide rail section 7 at a point of a strain gauge 10. This would make the arrangement capable of detecting and reacting to misalignment of a conveying element, unsymmetrical wear of chains connecting the conveying element of the people mover, a worn guide roller, or a missing or misaligned guide roller, for instance.

[0019] The slots 8 are preferably made by cutting the slots 8 in material of the elongated guide rails 4a-4d with laser. The elongated guide rails 4a-4d for guiding and supporting the guide rollers 2a-2d of the conveying elements 1 are preferably made of metal. Laser-cutting provides an accurate and efficient way to manufacture the slots.

[0020] The slots 8 extend preferably through the material of the elongated guide rails 4a-4d, as illustrated in Figure 5. Hereby, their ability to increase bendability of the guide rail section 7 is facilitated.

[0021] The slots 8 are preferably elongated in longitudinal direction L of the guide rail 4a-4d. Particularly, it is preferable that they have each a length greater than width, the length/width ratio being more than 10, wherein said length is measured in longitudinal direction L of the guide rail 4a-4d, and said width in width direction W of the guide rail 4a-4d, respectively. The slots 8 are preferably narrow, because then they do not weaken the guide rail structure excessively. The slots 8 particularly preferably each less than 2 mm in width and more than 2 cm in length. The slots 8 are preferably 2-20 cm in length. These dimensions are preferable as they fit well with the typical dimensions of guide rollers of people movers in the form of escalator, autowalk or moving ramp.

[0022] The dimensions of the strips 9 are preferably as follows: each said strip 9 is 2-10 mm in width, and the strain gauge 10 fixed on the lower side 7b of the strip 9 is 2-5 mm in width , wherein said width is measured in width direction W of the guide rail 4a-4d. Each said strain gauge 10 is preferably more than 1 cm in length. Here, when referring to the length of the strain gauge 10, it is meant the length as measured in longitudinal direction of the guide rail 4a-4d.

[0023] Strain gauges are commercially available components. Figure 5 illustrates a preferred embodiment of the strain gauge 10. In this case, the strain gauge 10 is an ohmic resistance strain gauge. The ohmic resistance strain gauge 10 comprises a conductor c extending in longitudinal direction of the strain gauge 10. Particularly, it is preferable that the conductor c extends back and forth in longitudinal direction of the strain gauge 10. The strain gauge 10 being of this kind, the monitoring unit 5, is arranged to monitor an electrical property of the conductor c, most preferably ohmic resistance thereof. Even slight dimensional changes of the strip 9 resulting from bending thereof will cause a detectable change in the ohmic resistance of the conductor. Thus, the solution can be very accurate.

[0024] As described referring to Figure 3, the slots 8 preferably extend through the material of the elongated guide rails 4a-4d, whereby bendability of the strips 9 can be facilitated. This is however not necessary. Figure 6 illustrates an alternative configuration of the slots 8. In this case, each said slot 8 is a blind slot extending into the material of the elongated guide rail 4a-4d without extending through it. The slots 8 being blind facilitates that the structure of the guide rail 4a-4d is not weakened excessively. It is furthermore preferable, although not necessary, that the blind slots 8 extend into the material of the elongated guide rail 4a-4d particularly from below without extending through it. Thus, the top surface of the guide rail 4a-4d is not made uneven by the slots 8, and even rolling of the guide rollers 2a-2d is facilitated. Furthermore, the strain gauges 10 and the slots 8 being on the same side of the guide rail 4a-4d, the strain gauges 10 are also simple to position relative to the slots 8.

[0025] As mentioned, the width direction W is horizontal direction and orthogonal to longitudinal direction L of the guide rails 4a-4d, and thereby also orthogonal to the direction L in which the conveying elements 1 are movable. In the Figures, also direction N is showed, which is the normal direction, and orthogonal to both the width direction W and longitudinal direction L of the guide rails 4a-4d. The longitudinal direction L of the guide rails 4a-4d can be horizontal but this is not necessary, because the guide rail might be at inclination relative to horizontal plane, such that the longitudinal axis thereof is at an angle relative to horizontal plane. This may be the case if the people mover is a moving ramp or an escalator which comprise inclined portions.

[0026] It is to be understood that the above description and the accompanying Figures are only intended to teach the best way known to the inventors to make and use the invention. It will be apparent to a person skilled in the art that the inventive concept can be implemented in various ways. The above-described embodiments of the invention may thus be modified or varied, without departing from the invention, as appreciated by those skilled in the art in light of the above teachings. It is therefore to be understood that the invention and its embodiments are not limited to the examples described above but may vary within the scope of the claims.

Claims

1. Henkilökuljettimen valvontajärjestely, joka käsittää kuljetinelementtejä (1), kuten portaita tai paketteja, jolloin kukin kuljetinelementeistä (1) käsittää ohjausrullia (2a-2d) ja askelmaelimen (3), jolla on astuntapinta (3a), jolla henkilö voi seisoa; ja joukon pitkänomaisia ohjauskiskoja (4a-4d) kuljetinelementtien (1) ohjausrullien (2a-2d) ohjaamiseksi ja kannattelemiseksi; ja valvontayksikön (5), joka käsittää elektroniset prosessointivälineet; ja tunnistusvälineet (6a-6d), jotka on yhdistetty valvontayksikköön (5), tunnettu siitä, että vähintään yksi ohjauskiskoista (4a-4d) käsittää ohjauskisko-osuuden (7), jolla on yläsivu (7a), jonka päällä ohjausrulla (2a-2d) on järjestetty kulkemaan, joka ohjauskisko-osuus (7) käsittää vierekkäisiä rakoja (8), jotka ovat pitkänomaisia ohjauskiskon (4a-4d) pituussuunnassa (L) ja etäisyyden päässä toisistaan ohjauskiskon (4a-4d) leveyssuunnassa (W), ja kaistaleen (9) kunkin vierekkäisten rakojen (8) parin välissä, joka kaistale (9) on pitkänomainen ohjauskiskon (4a-4d) pituussuunnassa (L), ja mainitut tunnistusvälineet (6a-6d) käsittävät venymäanturin (10), joka on kiinnitetty vähintään yhden kaistaleista (9) alasivuun (7b) ja järjestetty tunnistamaan kaistaleen (9) dimensiomuutoksia ohjauskiskon (4a-4d) pituussuunnassa (L).A passenger conveyor control arrangement comprising conveyor elements (1), such as stairs or packages, wherein each of the conveyor elements (1) comprises guide rollers (2a-2d) and a step member (3) having a step surface (3a) for standing on; and a plurality of elongated guide rails (4a-4d) for guiding and supporting the guide rollers (2a-2d) of the conveyor elements (1); and a monitoring unit (5) comprising electronic processing means; and identification means (6a-6d) connected to the monitoring unit (5), characterized in that at least one of the guide rails (4a-4d) comprises a guide rail portion (7) having an upper side (7a) on which the guide roll (2a-2d). ) is arranged to pass which guide rail portion (7) comprises adjacent slots (8) which are elongated in the longitudinal direction (L) of the guide rail (4a-4d) and spaced apart in the width direction (W) of the guide rail (4a-4d); 9) between each pair of adjacent gaps (8), the strip (9) being elongated in the longitudinal direction (L) of the guide rail (4a-4d) and said sensing means (6a-6d) comprising a strain gauge (10) secured to at least one of the strips 9) on the underside (7b) and arranged to detect dimensional changes of the strip (9) in the longitudinal direction (L) of the guide rail (4a-4d).

2. Patenttivaatimuksen 1 mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että valvontajärjestely on järjestetty suorittamaan yhden tai useamman ennalta määrätyn toimenpiteen yhdellä tai useammalla mainituista venymäantureista (10) tunnistetun dimensiomuutoksen perusteella.A passenger conveyor monitoring arrangement according to claim 1, characterized in that the monitoring arrangement is arranged to perform one or more predetermined operations on the basis of the dimension change detected by one or more of said elongation sensors (10).

3. Patenttivaatimuksen 2 mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että valvontajärjestely on järjestetty pysäyttämään kuljetinelementtien (1] liike, jos yhdellä tai useammalla mainituista venymäantureista (10) tunnistettu dimensiomuutos ylittää ennalta määrätyn rajan.A passenger conveyor monitoring arrangement according to claim 2, characterized in that the monitoring arrangement is arranged to stop the movement of the conveyor elements (1) if the dimensional change detected by one or more of said elongation sensors (10) exceeds a predetermined limit.

4. Patenttivaatimuksen 2 tai 3 mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että valvontajärjestely on järjestetty pysäyttämään kuljetinelementtien (1) liike, tai vähintään lähettämään signaali etävalvontakeskukseen, jos yhdellä tai useammalla mainituista venymäantureista (10) tunnistettu dimensiomuutos on alle ennalta määrätyn rajan, ja valvontajärjestelyn vastaanottamat muut signaalit ja/tai muu data indikoi, että rulla (2a-2d) on ohjauskisko-osuuden (7) päällä venymäanturin (10) kohdalla.Passenger conveyor control arrangement according to claim 2 or 3, characterized in that the control arrangement is arranged to stop the movement of the conveyor elements (1) or at least send a signal to the remote monitoring center if the dimensional change detected by one or more of said elongation sensors (10) is below a predetermined limit other signals and / or other data indicate that the roller (2a-2d) is over the guide rail portion (7) at the strain gauge (10).

5. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että raot (8) on tehty leikkaamalla laserilla raot (8) pitkänomaisten ohjauskiskojen (4a-4d) materiaaliin.Passenger conveyor control arrangement according to one of the preceding claims, characterized in that the slots (8) are made by laser cutting the slits (8) into the material of the elongated guide rails (4a-4d).

6. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että pitkänomaiset ohjauskiskot (4a-4d) kuljetinelementtien (1) ohjausrullien (2a-2d) ohjaamiseksi ja kannattelemiseksi on tehty metallista.Passenger conveyor control arrangement according to one of the preceding claims, characterized in that the elongated guide rails (4a-4d) for guiding and supporting the guide rollers (2a-2d) of the conveyor elements (1) are made of metal.

7. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että kukin rako (8) ulottuu pitkänomaisen ohjauskiskon (4a-4d) materiaalin läpi.A passenger conveyor control arrangement according to any one of the preceding claims, characterized in that each slot (8) extends through the material of the elongated guide rail (4a-4d).

8. Jonkin aiemman patenttivaatimuksen 1-6 mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että kukin rako (8) on pohjallinen reikä.Passenger conveyor control arrangement according to any one of claims 1 to 6, characterized in that each slot (8) is a hole in the insole.

9. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että kullakin raolla (8) on pituus suurempi kuin leveys, sen pituus/leveys - suhteen ollessa edullisesti suurempi kuin 10.Passenger conveyor control arrangement according to one of the preceding claims, characterized in that each slot (8) has a length greater than a width, preferably with a length / width ratio of more than 10.

10. Patenttivaatimuksen 9 mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että kunkin mainitun raon (8) leveys on vähemmän kuin 2 mm ja pituus enemmän kuin 2 cm.A passenger conveyor control arrangement according to claim 9, characterized in that each of said slots (8) has a width of less than 2 mm and a length of more than 2 cm.

11. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että raot (8) ovat paralleeleja keskenään.Passenger conveyor control arrangement according to one of the preceding claims, characterized in that the slots (8) are parallel to each other.

12. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että raot (8) ovat suoria.Passenger conveyor control arrangement according to one of the preceding claims, characterized in that the slots (8) are straight.

13. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että kunkin mainitun kaistaleen (9) leveys on 2-10 mm, ja kaistaleen (9) alasivuun (7b) kiinnitetyn venymäanturin (10) leveys on 2-5 mm.A passenger conveyor control arrangement according to any one of the preceding claims, characterized in that each of said strips (9) has a width of 2 to 10 mm and a stretch sensor (10) attached to the underside (7b) of the strip (9).

14. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että raot (8) ovat pituudeltaan 2-20 cm.Passenger conveyor control arrangement according to one of the preceding claims, characterized in that the slots (8) are 2-20 cm in length.

15. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että kukin mainittu venymäanturi (10) on pituudeltaan suurempi kuin 1 cm.A passenger conveyor control arrangement according to any one of the preceding claims, characterized in that each of said elongation sensors (10) is greater than 1 cm in length.

16. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että kukin mainittu venymäanturi (10) on ohmivastusvenymäanturi.A personal conveyor monitoring arrangement according to any one of the preceding claims, characterized in that each of said elongation sensors (10) is an ohmic resistance elongation sensor.

17. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että kukin mainittu venymäanturi (10) käsittää johtimen (c), joka ulottuu venymäanturin (10) pituussuunnassa, ja valvontayksikkö (5) on järjestetty valvomaan johtimen (c) sähköistä ominaisuutta, edullisimmin sen ohmivastusta.A personal conveyor monitoring arrangement according to any one of the preceding claims, characterized in that each said strain gauge (10) comprises a conductor (c) extending in the longitudinal direction of the strain gauge (10) and a monitoring unit (5) arranged to monitor the electrical property of the ohmivastusta.

18. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että valvontajärjestely edelleen käsittää paikka-anturin (11) rullan (2a-2d), joka on ohjauskisko-osuuden (7) päällä venymäanturin (10) kohdalla, paikan tunnistamiseksi, joka paikka-anturi (11) on yhdistetty valvontayksikköön (5).A passenger conveyor monitoring arrangement according to any one of the preceding claims, characterized in that the monitoring arrangement further comprises a position sensor (11) for detecting a position of a roller (2a-2d) on the guide rail portion (7) at the strain sensor (10). the sensor (11) is connected to the monitoring unit (5).

19. Patenttivaatimuksen 18 mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että paikka-anturi (11) on rullan (2a-2d) kulkureitin vierellä.A passenger conveyor control arrangement according to claim 18, characterized in that the position sensor (11) is adjacent to the path of the roller (2a-2d).

20. Patenttivaatimuksen 18 tai 19 mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että paikka-anturi (11) on järjestetty tunnistamaan rullan (2a-2d) paikka ohjauskiskon (4a-4d) leveyssuunnassa (W).A passenger conveyor control arrangement according to claim 18 or 19, characterized in that the position sensor (11) is arranged to detect the position of the roller (2a-2d) in the width direction (W) of the guide rail (4a-4d).

21. Jonkin aiemman patenttivaatimuksen mukainen henkilökuljettimen valvontajärjestely, tunnettu siitä, että henkilökuljetin on liukuporras, liukukäytävä tai liukuramppi.A passenger conveyor control arrangement according to any one of the preceding claims, characterized in that the passenger conveyor is an escalator, a walkway or a slip ramp.