CN115801998A - Method and monitoring system for monitoring the driving operation of a people mover - Google Patents

Abstract

The invention relates to a method for monitoring the driving operation of a people conveyor and to a monitoring system for carrying out the method. The method comprises the following steps: the at least one motion detection module transmits the motion sequence to the interaction module and the risk analysis module; displaying the motion sequence on a screen of the interaction module; in parallel to the display of the motion sequence on the screen, the motion sequence is analyzed in a risk analysis module by means of an analysis algorithm to check for critical situations and, once a critical situation is identified, an alarm signal is sent to the interaction module; the interaction module visually and/or acoustically highlights the corresponding motion sequence on the screen based on the alarm signal and generates a confirmation input field on the screen; and the confirmation input area is manually clicked to prompt the interaction module to send the alarm signal to the control module, and the control module influences the running operation of the personnel transport equipment according to the received alarm signal.

Description

Method and monitoring system for monitoring the driving operation of a people mover

Technical Field

The invention relates to a method for monitoring the driving operation of a people conveyor(s) and to a monitoring system for carrying out the method.

Background

People moving equipment such as escalators and moving walkways are used, for example, in department stores and shopping malls, and also in stations, subway stations and airports. In areas such as stations, subway stations and airports, when congestion occurs, there is an increased risk of accidents if the user in an emergency situation pushes up other users of personnel transport equipment. This can lead to the fact that people being shoulder-charged fall on the step belt of the escalator or on the pallet belt of the moving walkway and can cause considerable injuries when the step belt or the pallet belt is not stopped by means of an emergency stop. It may also happen that the operating speed of the people conveyor is reduced, which is more advantageous for the user than an emergency stop.

In order to monitor these people moving equipment, a camera is used, and the video sequence captured by the camera is transmitted in real time to a screen arranged in a monitoring room. Usually, a plurality of people conveyors is monitored by monitoring personnel from a monitoring room, wherein a group of people conveyors is respectively attended by a single monitoring person. Furthermore, the monitoring personnel in the area of their assigned group of personnel handling devices often also monitor and operate lighting devices, fire alarms, ventilation devices and, if necessary, other devices such as safety gates and the like.

This high density of monitoring activities can lead to rapid fatigue and reduced attention of the monitoring personnel. If a critical situation occurs on one of the people mover devices, the critical situation is worsened by the reduced attention and in severe cases may lead to serious injuries or in worst case to death of the respective user.

In order to solve the above problem, the monitoring room is arranged such that by processing the motion sequence by means of image recognition, an emergency situation of the user on the people mover can be automatically recognized. Once a critical situation is identified, a corresponding motion sequence is displayed on the screen of the monitoring room. The movement sequence is provided with an identification code so that the monitoring person can immediately identify on which person conveying device of the group a critical situation has occurred.

Below the screen, an identical number of physical emergency stop switches is arranged in the monitored passenger conveying installations corresponding to this number, wherein each emergency stop switch is connected to the safety circuit of the corresponding passenger conveying installation. In the event of a critical situation, the monitoring room personnel must search the movement sequence for the emergency switch associated with the personnel carrier displayed with the identification code and operate the emergency stop switch.

Such a search may reduce the emergency response speed to a large extent, so that the intervention of the monitoring personnel is carried out too late. Furthermore, the monitoring personnel of the monitoring room may get into panic in a severe scene over the sequence of movements and press the wrong emergency stop switch, which leads to an emergency stop of other personnel transport devices which should not be stopped. This not only does not alleviate this critical situation, but also causes inconvenience to the user of the stopped people conveyor, since the stopped equipment cannot be immediately put back into operation.

Disclosure of Invention

In order to solve at least one of the above problems and drawbacks of the prior art, it is an object of the present invention to provide a monitoring system for a people mover, which monitoring system enables monitoring room personnel to immediately and appropriately react to a critical situation to prevent further exacerbation of such a critical situation.

The object is achieved by a method for monitoring the driving operation of a people mover by means of a monitoring system.

According to one aspect of the invention, a method for monitoring the driving operation of a people mover is provided, comprising the following steps:

at least one motion detection module detects a motion sequence of a situation occurring on the corresponding personnel transport equipment and transmits the motion sequence to the interaction module and the hazard analysis module in real time;

displaying the motion sequence on a screen of the interaction module;

in parallel with the display of the motion sequence on the screen, in the hazard analysis module, the motion sequence is analyzed by means of an analysis algorithm to check the hazard situation of the user of the people mover and, once the hazard situation is identified, an alarm signal is sent to the interaction module;

the interaction module visually and/or audibly highlighting the motion sequence displayed on the screen based on the alarm signal and generating a confirmation input field on the screen; and

the manual clicking of the confirmation input field causes the interaction module to send the alarm signal to the control module, and the control module influences the driving operation of the people conveyor according to the received alarm signal.

According to an exemplary embodiment of the present invention, a set of possible critical situations is stored in the risk analysis module, the set of possible critical situations comprising different atypical motion scenes, a motion process extracted from the motion sequence is compared with the atypical motion scenes, and when the extracted motion process sufficiently coincides with the atypical motion scenes, a critical situation is considered to exist, and a warning signal is sent to the interaction module.

According to another exemplary embodiment of the present invention, the different atypical motion scenes of the group of possible critical situations have different weights according to their priority rating.

According to another exemplary embodiment of the present invention, the driving operation is influenced according to the weight, so that the following process is performed according to the weight:

the control module immediately and emergently stops the corresponding personnel transportation equipment; or

The control module emergently stopping the respective people transportation facility with a predefined delay time corresponding to the weight; or

Sending instructions to the control device of the respective people conveyor to cause the control device to reduce the travel speed of the conveyor belt of the respective people conveyor according to a predefined deceleration profile.

According to another exemplary embodiment of the present invention, the control module triggers the emergency stop by operating a safety switch of the respective people mover.

According to a further exemplary embodiment of the present invention, the movement detection module is a plurality of which capture movement sequences of at least two different people conveyor devices, each of the plurality of movement detection modules has an identification code and equips a movement sequence with the identification code, the hazard analysis module equips the alarm signal sent with the respective identification code, and in the control module the movement detection modules correspond one-to-one with the monitored people conveyor devices via the identification codes, and the interaction module highlights, on the basis of the alarm signal received, only the movement sequence corresponding to the alarm signal in a visual and/or acoustic manner, and transmits the alarm signal equipped with the identification code to the control module upon clicking the confirmation input field.

According to a further exemplary embodiment of the present invention, a plurality of motion detection modules, a plurality of which takes a sequence of motions of at least two different people conveyor devices, each of which has an identification code and is provided with the identification code, the hazard analysis module is provided with a corresponding identification code for the transmitted alarm signals, and in the control module, the motion detection modules correspond one-to-one with the monitored people conveyor devices via the identification codes, and the interaction module highlights only the sequence of motions corresponding to the alarm signals visually and/or acoustically based on the received alarm signals and transmits the alarm signals provided with the identification codes to the control module upon clicking of the confirmation input field,

wherein, in the event of a plurality of critical situations being identified simultaneously, the danger analysis module sends an alarm signal immediately following one another with associated weights to the interaction module, and the movement sequence is highlighted visually and/or acoustically one after the other on the basis of the weights.

According to another exemplary embodiment of the present invention, the interaction module generates a cancel input field on the screen in addition to the confirmation input field based on the alarm signal, and causes the interaction module to cancel the alarm signal by manually clicking the cancel input field and to withdraw the visually and/or acoustically highlighting of the corresponding motion sequence.

According to another exemplary embodiment of the present invention, after clicking the confirmation input area or the cancellation input area, the display of the confirmation input area and/or the cancellation input area on the screen is cancelled.

According to another exemplary embodiment of the present invention, immediately after clicking the cancel input area, a corresponding motion sequence is analyzed in the risk analysis module within a predetermined time.

According to another exemplary embodiment of the present invention, the screen is divided into a plurality of first screen areas and a second screen area, the first screen area being smaller than the second screen area, there being one corresponding first screen area for each motion detection module, the interaction module visually displaying a motion sequence corresponding to the alarm signal on the second screen area upon receipt of the alarm signal.

According to another exemplary embodiment of the invention, the interaction module has a central screen and further screens arranged next to the central screen, there being one corresponding further screen for each motion detection module, and upon receiving an alarm signal the interaction module visually displays a sequence of motions corresponding to the alarm signal on the central screen.

According to a further exemplary embodiment of the present invention, the interaction module outputs an acoustic warning to the user of the people conveyor via the first output module in the presence of the alarm signal.

According to another exemplary embodiment of the present invention, the first output module is arranged in the area of the people conveyor corresponding to the alarm signal.

According to a further exemplary embodiment of the present invention, the interaction module outputs a visual warning to a user of the people conveyor via the second output module in the presence of the alarm signal.

According to another exemplary embodiment of the present invention, the second output module is arranged in the area of the people conveyor corresponding to the alarm signal.

According to another exemplary embodiment of the present invention, the audible warning and/or the visual warning comprise a notification relating to a critical situation.

According to another exemplary embodiment of the present invention, the motion sequence is a digitized series of photographs or video streams.

According to another exemplary embodiment of the present invention, the motion detection module is a camera, a scanner or a sensor.

According to another aspect of the present invention, there is provided a monitoring system for performing the above method, the monitoring system comprising: at least one of said hazard analysis module, said interaction module, said control module, and said at least one motion detection module adapted for a corresponding personnel transportation device,

wherein at least one of the hazard analysis module, the interaction module, the control module, and the at least one motion detection module remain connected to each other via a data network.

In particular, the motion detection module is suitable for the corresponding people conveyor and can detect motion sequences that can be processed digitally by the motion detection module. In other words, one or more motion detection modules are adapted to the respective people mover and continuously take a picture of the currently existing process or situation on the escalator or moving walkway. As motion detection means, cameras, thermal imaging cameras, laser scanners, TOF cameras, a set of several sensors, etc. can be used, whose motion sequences are correspondingly detected in a digitally processable form as video film sequences, image sequences, thermal imaging sequences, etc. When a plurality of motion detection modules are used per people conveyor, it is preferred if each motion detection module is assigned a specific section or region, so that the entire escalator or the entire moving walkway cannot be seen in one of the motion sequences.

According to the invention, at least one motion detection module transmits its motion sequence to the interaction module and the risk analysis module in real time. The interaction module is used for interacting with the monitoring person and has at least one screen on which a movement sequence can be displayed or visually depicted.

In parallel with the display of the movement sequences on the screen, these movement sequences are checked in a risk analysis module for critical situations of the user of the people conveyor by means of an analysis algorithm. In other words, automated identification processes or analysis methods known from the technical field of monitoring electronic devices, such as image analysis methods and corresponding algorithms, motion analysis methods and corresponding algorithms, statistical evaluation methods and heuristic evaluation methods, etc., are used more often in order to identify a deviation or atypical motion process of the user from a normal motion process. According to the deviating movement process, the danger analysis module can analyze whether the situation is a critical situation. Possible embodiments of the automated evaluation process will be described in more detail below. Once an emergency situation is detected, the danger analysis module sends an alarm signal to the interaction module.

Based on the alarm signal, the interaction module visually and/or acoustically highlights a sequence of movements displayed on the screen and corresponding to the alarm signal and generates a confirmation input field on the screen. This visual highlighting is achieved by displaying the motion sequence associated with the alarm signal on the screen in magnification by means of a zoom function once the alarm signal reaches the interaction module. Of course, other visual highlighting means may be used, such as a yellow or red border that frames the motion sequence displayed on the screen. The blinking effect of the frame may also turn the maximum attention of the monitoring person to the shown sequence of movements. Furthermore, the attention to the critical situation can also be audibly drawn by triggering the signal tone in the monitoring room.

The confirmation input field displayed on the screen is preferably likewise visually highlighted, so that the monitoring person who needs to be used finds it immediately on the screen. Here, the screen may be a so-called touch screen, the pressure-sensitive surface of which can detect a touch and convert it into an input signal. Instead of a touch-sensitive screen, sensors can also be provided, which can scan the screen in a grid-like manner and detect the position of a finger on the screen when the finger touches the screen surface. By manually clicking on the confirmation input area displayed on the screen, the interaction module is prompted to send an alarm signal to the control module. Based on the transmitted warning signal, the control module influences the driving operation of the people mover, which is identified by the risk analysis module as an emergency situation.

As already mentioned above, an automated identification process and an evaluation process of the critical situation are carried out in the risk analysis module, wherein deviating motion processes identified by known analysis methods are extracted from the motion sequence and subsequently evaluated. To perform the evaluation process, a set of possible critical situations may be stored in the hazard analysis module. The set of critical situations includes different atypical motion scenes, which can be compared with the motion sequences extracted from the motion sequence. This group of atypical movement scenes can be generated, for example, by a machine learning process by readjusting with the aid of a dummy or a substitute, detecting typical critical situations, such as falls or unintentional movements on a person conveying device, and recording the movement sequences extracted here as atypical movement scenes in the group of atypical movement scenes. Of course, the set of atypical motion scenes can also be supplemented with other atypical motion scenes which lead to accidents during operation of the people conveyor and are not recognized by the hazard analysis module. In case the extracted motion course is sufficiently consistent with an atypical motion scenario, the hazard analysis module may assume or determine that a critical situation exists and send an alarm signal to the interaction module.

Preferably, the different atypical-motion scenes of the group have different weights according to priority levels. Different actions for influencing the driving operation can be defined in accordance with these weights. Thus, for example, a detected fall of the user may have a very high weight and for this high weight an action of an emergency stop is defined, which is triggered immediately when the monitoring person clicks on the confirmation input field. Such critical situations may for example have a moderate weight when the user enters the people conveyor against the conveying direction, and may be defined for such moderate weight as an action of a very gradual reduction of the conveying speed, which action is initiated after a delay time when the monitoring person clicks on the confirmation input area. A delay time occurs here, since a user driving in the wrong direction may not be aware of this and divert, as soon as the user recognizes the wrong conveying direction. Further possibilities for influencing the driving operation, such as audible and/or visual warning messages to the user of the people mover device, are described further below.

In other words, the driving operation can be influenced according to the weight, so that the control module immediately actuates the safety switch of the corresponding people mover and triggers an emergency stop according to the weight. The control module can also actuate the safety switch of the respective people conveyor with a predefined delay time corresponding to the weight and trigger an emergency stop. In addition, with a corresponding weighting, a command can also be issued to the control device of the respective people conveyor, which then causes the control device to reduce the travel speed of the conveyor belt of the respective people conveyor according to a predefined deceleration profile.

In one embodiment of the invention, the monitoring system may have a plurality of motion detection modules which receive motion sequences of at least two different people mover devices. Each motion detection module may have an identification code and equip its motion sequence with the identification code or perform encoding of its motion sequence accordingly. Once the danger analysis module identifies a critical situation in the motion sequence, the danger analysis module can assign the output warning signal with the same identification code as the identification code of the motion sequence with the critical situation. In the interaction module and/or the control module, the motion detection module is assigned, by its identification code, exclusively or individually to the person conveying device which is monitored by the identification code. The interaction module visually and/or acoustically highlights only the motion sequence corresponding to the alarm signal based on the received alarm signal. When the confirmation input field is clicked, an alarm signal provided with an identification code is transmitted to the control module, and the influence on the driving operation set for the alarm signal and possibly according to its weight is initiated there.

In a further embodiment of the invention and with the implementation of the weighting, the risk analysis module can send alarm signals with associated weighting directly to the interaction module in succession in a plurality of simultaneously identified critical situations, wherein the motion sequence is continuously visually and/or acoustically highlighted in accordance with its weighting. In other words, the motion sequence with the most critical case is highlighted first. Once the monitoring personnel clicks on the confirmation input field, a sequence of movements with a second critical situation is highlighted, and so on.

The user can often save himself from a critical situation by just being able to fasten to the armrest, for example in the event of a fall, and thus himself/herself can remove the critical situation. In this case, the risk analysis module may already identify the course of motion of the user as a critical situation before the user saves himself. To take these circumstances into account, in a further embodiment of the invention, the interaction module can generate a cancel input field in addition to the confirmation input field on the basis of the on-screen warning signal. The cancel input field may be visually distinct from the confirm input field so that the monitoring personnel do not confuse the two fields. By manually clicking on the cancel input field, the interaction module can be prompted to cancel the alarm signal and to withdraw the corresponding movement sequence of the visual and/or audible highlighting associated therewith. By operating the cancel input field, no further transmission to the control module takes place and thus the driving operation of the relevant people conveyor is not impaired.

In one refinement, after clicking on the confirmation input field or the cancellation input field, the display of the confirmation input field and/or the cancellation input field can be cancelled on the screen. The situation of the motion sequence can thus be further observed without partial coverage by these areas. This also indicates to the monitoring person that the reaction selected by the monitoring person is carried out by the monitoring system.

If there is a question, which despite the visual distinction may be pressed by the monitoring person instead of the confirmation input field, a modification may be used to address this question. The improvement provides that immediately after the click of the cancellation input field, the corresponding movement sequence is analyzed, preferably in a risk analysis module, within a predetermined time. In other words, the motion sequence is further checked for criticality within a predetermined time. If the monitoring person inadvertently clicks the cancel input field instead of the confirm input field, the same motion sequence immediately "pops up" with the cancel input field and the confirm input field, and the monitoring person can again select how the monitoring system should respond.

In one embodiment of the monitoring system, the screen of the interaction module can be divided into a plurality of smaller first screen regions and a larger second screen region, wherein for each motion detection module there is a corresponding first screen region, and upon receipt of the alarm signal the interaction module visually displays a motion sequence corresponding to the alarm signal on the larger second screen region.

In a further embodiment, the interaction module can have a central screen and further screens arranged next to the central screen, wherein for each motion detection module there is a corresponding screen, and upon receipt of the alarm signal the interaction module visually displays a motion sequence corresponding to the alarm signal on the central screen. Preferably, the central screen has a larger screen area than the other screens.

In a further embodiment, the interaction module can output an audible and/or visual warning to the user of the people conveyor via the output module when the alarm signal is present. The output module is arranged in the area of the personnel transportation device associated with the alarm signal. In other words, each people conveyor is equipped with at least one output module which operates on the basis of the identification code of the alarm signal. Preferably, the alarm signal is directed to the people conveyor, so that the acoustic warning is only responsive to the user of the people conveyor or to individual ones of these users, and not to the entire environment. The output module may here be a loudspeaker, a loudspeaker device, a screen display, a projector for two-dimensional display or a hologram, etc. Most effective are warning prompts or a combination of warnings that are output both audibly and visually. The warning to be issued can be adjusted according to the respective critical situation and its elimination, so that when an emergency stop is triggered, the remaining users are warned, after which the emergency stop is triggered. Preferably, there is a set of different warnings from which a warning suitable for a critical situation is automatically selected, for example according to the weights described above, and output by the output module.

Since the precondition that the monitoring person observes the motion sequences of all motion detection modules in real time is realized by dividing the screen into a plurality of screen regions or by arranging a plurality of screens, the monitoring person can also find an unrecognized critical situation. In this case, the monitoring person may click on a smaller first screen area or screen where a critical situation can be identified. The motion sequence of the motion detection module is immediately displayed on a second, larger screen area or screen, together with a confirmation input field and, if necessary, a cancellation input field. In this case, an alarm signal is generated in the interaction module, which alarm signal contains the identification code of the associated motion detection module and an instruction for triggering an emergency stop. If the operating input field is clicked, an alarm signal is transmitted to the control module, which immediately triggers an emergency stop for the respective people mover.

Drawings

Embodiments of the invention are described below with reference to the drawings, wherein neither the drawings nor the description should be regarded as limiting the invention. Features that are identical or functionally identical are provided with the same reference symbols. Wherein:

fig. 1 shows a perspective view of a people conveyor, the driving operation of which is to be monitored, and a monitoring system for monitoring the people conveyor;

fig. 2 shows a perspective view of a plurality of people mover devices, the driving operation of which is to be monitored, and the monitoring system of fig. 1, which is suitable for monitoring a plurality of people mover devices.

Detailed Description

To more clearly illustrate the objects, technical solutions and advantages of the present invention, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the following description of the embodiments is intended to illustrate and explain the present general inventive concept and should not be taken as limiting the present invention. In the specification and drawings, the same or similar reference numerals refer to the same or similar parts or components. The figures are not necessarily drawn to scale and some well-known components and structures may be omitted from the figures for clarity.

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top" or "bottom", etc. are used merely to indicate relative positional relationships, which may change when the absolute position of the object being described changes. When an element is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.

Fig. 1 shows a monitoring system 1 for a people mover 51. The monitoring system 1 comprises a risk analysis module 11, an interaction module 21, a control module 31 and two motion detection modules 41, 42. The modules 11, 21, 31, 41, 42 are connected to each other via a data network 3. The construction of the data network 3 is not shown in detail, since this CAN be established in different ways and methods, for example by means of a local wired and/or wireless data network 3, by means of an internet connection to a data cloud 5, by means of a CAN bus system, by means of a bluetooth connection, etc. It is important for the invention that the individual modules 11, 21, 31, 41, 42 can exchange data with one another, wherein the data exchange between the individual modules 11, 21, 31, 41, 42 can take place unidirectionally or bidirectionally as required. The most important connections of the data network 3 are symbolically shown by means of arrows. Furthermore, it should be mentioned that at least the risk analysis module 11, the computing unit 29 and/or the control module 31 of the interaction module 21, if appropriate, and their data memories can be implemented in the data cloud 5.

The two motion detection modules 41, 42 are adapted to the corresponding people conveyor 51. Of course, it is also possible to provide only one motion detection module if the conveying area 53 of the people conveyor 51 is not too long and the single motion detection module 41, 42 is sufficient to overview or detect the entire conveying area 53 of the people conveyor 51, the protective railing 54, 55 of the people conveyor and the two access areas 56, 57 of the people conveyor.

The motion detection modules 41, 42 are able to detect motion sequences 441, 442 of what happens on the corresponding people mover 51, which can be processed in a digitized manner. Here, too, the surroundings in the vicinity of the people mover 51 can be included. For example, the area of the building (not shown) in which the people mover 51 is installed, which is located in front of the access areas 56, 57, belongs to the surrounding environment in the vicinity. The front area of the building is also referred to as a front space and, if necessary, is monitored by a proximity sensor of the people mover 51, which transmits its detection data to an "automatic start/stop" of the people mover 51.

As motion detection means 41, 42, cameras, thermal imaging cameras, laser scanners, TOF cameras, combinations of a plurality of sensors, etc. can be used, wherein the motion sequences 441, 442 of these devices are correspondingly detected in a digitally processable form as photographs, video image sequences, thermal imaging sequences, etc. When a plurality of motion detection modules 41, 42 are used per people conveyor 51, a specific section or region is associated with each motion detection module 41, 42 (see fig. 2). Preferably, these sections or areas overlap so that there is no monitoring gap in which an unnoticed critical situation 101 of the user 102 may occur.

In order to effectively and safely monitor the driving operation of the people mover 51, the motion detection modules 41, 42 transmit their motion sequences 441, 442 in real time in parallel to the interaction module 21 and the hazard analysis module 11.

The motion sequences 441, 442 of the two motion detection modules 41, 42 are also displayed side by side on the screen 22 of the interaction module 21, so that one of the monitoring persons (not shown) can observe the entire travel movement F of the people mover 51 in real time. In the present embodiment, the screen 22 is divided into a plurality of smaller first screen areas 24, 25, 26 and one larger second screen area 23. For the motion sequence 441, 442 of each motion detection module 41, 42 there is an associated smaller first screen area 24, 25. As shown in fig. 1, a further, smaller first screen area 26 is defined, in which, for example, operating data of the monitored people conveyor, ventilation, fire monitoring, etc. can be displayed.

In parallel to the display on the screen 22 of the interaction module 21, the movement sequences 441, 442 in the risk analysis module 11 check the risk situation of the user 101 for the people mover 51 by means of an analysis algorithm. These analysis algorithms are based, for example, on known image processing techniques that use artificial intelligence in neural networks for optimization and application in a self-learning process. A common image processing technique for generating information from an image is, for example, the calculation of a histogram which gives information about the statistical brightness distribution in the image. Such a histogram may be used, for example, as a configuration for further image processing steps or as information for a human user of the software. Other information of the image that can be calculated is, for example, entropy or average brightness. Based on this information, the vector analysis can draw conclusions about how the respective salient locations move relative to each other and from these on the motion scene of the user 102. Once the course of motion of the user 101 has been extracted, for example, as a skeletal course of motion and its motion has been identified, it can be compared with a stored set of possible critical situations which reflect the possible critical situations 101 as atypical motion scenes 15. Of course, instead of the method described above, other analysis techniques and methods known from the field of video surveillance technology may be used in order to extract the movement sequence 441, 442 of the user 101.

As shown in this example, the motion detection module 42 arranged further back in relation to the observation plane has acquired the motion sequence 442 with the critical situation 101 and transmitted it to the risk analysis module 11. Where a critical situation is identified by extraction and comparison and an alarm signal 13 is sent by the risk analysis module 11 to the interaction module 21. When the interaction module 21 receives this alarm signal 13, a movement sequence 442 corresponding to the alarm signal 13 is visually displayed on the larger second screen area 23.

As described above, in the embodiment shown in fig. 1, the smaller first screen areas 24, 25 are defined in accordance with the number of motion detection modules 41, 42, so that the motion sequences 442 displayed on the larger second screen area 23 are also displayed in parallel on the associated smaller first screen area 25. Of course, the screen layout of the interaction module 21 may also be selected such that the number of smaller first screen areas 24, 25, 26 is smaller around a certain area than the number of motion detection modules 41, 42, so that always such a motion sequence 441, 442 continues on a larger second screen area 23, in which the critical situation 101 was finally identified. Once the alarm signal 13 is again sent to the interaction module 21, the corresponding motion sequence 441, 442 exchanges the "footprint" or screen area with the motion sequence 441, 442 displayed on the larger second screen area 23.

The motion sequence 441, 442 displayed on the smaller first screen area 24, 25, 26 is visually highlighted because the interaction module 21 also displays the motion sequence on the larger second screen area 23 on the basis of the alarm signal 13. Of course, this can additionally be highlighted, for example, by a red or yellow flashing border. Furthermore, the attention of the monitoring person can also be increased acoustically, for example by means of a defined signal tone 27. Other display layouts may also be used, for example by enlarging the respective smaller screen area 24, 25, 26 in the alarm signal 13 instead of the continuously present larger screen area 23.

Since the critical situation 101 is mostly a dynamic process, it is entirely possible to capture it first in the motion sequence 442 of the motion detection module 42 arranged further back with respect to the observation plane and then in the motion sequence 441 of the motion detection module 41 arranged further front. Since the two motion sequences 441, 442 are analyzed simultaneously by the hazard analysis module 11, the respective alarm signals 13 with different identification codes are transmitted to the interaction module one after the other. In the computing unit 29 of the interaction module 21, a logic process is implemented which automatically switches the motion sequences 441, 442 displayed in the larger screen area 23 in the order of the alarm signal 13.

The interaction module 21 not only highlights the corresponding motion sequences 441, 442 but also generates a confirmation input field 28 on the screen 22. By manually clicking on the confirmation input area 28, the interaction module 21 is prompted to send an alarm signal 13 to the control module 31. The control module 31 influences the driving operation F of the people conveyor 51 on the basis of the transmitted warning signal 13. If the monitoring person recognizes on the highlighted movement sequences 441, 442 that the user 102 involved in the critical situation 101 can alleviate the critical situation by himself or already, the confirmation input field 28 does not need to be clicked and the driving operation F is not influenced.

In other words, a set of possible critical situations 101 may be stored in the hazard analysis module 11. The set of critical situations may include different atypical motion scenes 15. The motion processes extracted from the motion sequences 441, 442 are compared to these atypical motion scenes. In case the extracted movement sequence sufficiently corresponds to the atypical movement scene 15, a critical situation 101 is assumed to exist and an alarm signal 13 is sent to the interaction module 21. Depending on the recognized movement scenario 15, different actions can be provided with regard to how the travel movement F of the people mover 51 is influenced. To this end, a set of instructions 17 is stored in the hazard analysis module 11. The command 17 for the action to be performed can be sent by the hazard analysis module 11 to the interaction module 21 together with the alarm signal 13 depending on the identified critical situation 101. On clicking the confirmation input field 28, the instruction 17 to be executed is sent to the control module 31 together with the alarm signal 13.

Of course, the alarm signal 13 can also contain a weight which calls the instruction 17 stored in the interaction module 21 corresponding to the weight and which is transmitted to the control module 31 together with the alarm signal 13 when the confirmation input field 28 is clicked. The atypical motion scene 15, its weighting and the associated instructions 17 for influencing the driving operation F of the people conveyor 51 are described in more detail below in connection with fig. 2.

Fig. 1 shows an example of how a user 102 of a people mover 51 loses his foot and falls in a transport area 53 of the people mover. The motion detection module 42 takes this critical situation 101 in its motion sequence 442 and sends it symbolically by means of an arrow to the interaction module 21, where it is displayed in the first, smaller screen area 25 provided for this purpose. In parallel with this, the same motion sequence 442 is also sent to the risk analysis module 11. From the motion sequence 442, the motion sequences of the user 102 are extracted by means of image processing methods and compared with a set of atypical motion scenes 15 stored in the risk analysis module 11. Since the extracted course of motion is sufficiently consistent with one of the atypical motion scenes 15 defining the disability, the hazard analysis module 11 sends an alarm signal 13 and an associated instruction 17 "emergency stop" to the interaction module 21. The transmission of the alarm signal 13 is illustrated by means of a dash-dot arrow.

With the transmission of the alarm signal 13, the motion sequence 442 of the motion detection module 42 is also displayed on the larger second screen area 23 and together with the confirmation input field 28. As soon as the monitoring person clicks on the confirmation input field 28, the alarm signal 13 together with the command 17 sent by the hazard analysis module 11 is transmitted to the control module 31. The control module 31 opens the switch 33 of the safety circuit 35 of the people conveyor 51 and then immediately triggers an emergency stop by means of the control device 59 of the people conveyor 51. As indicated by the arrow shown in dashed lines, the opening of the switch 33 is fed back by the safety circuit 35 to the control module 31 and from there to the interaction module 21 and displayed in the first, smaller screen area 26.

The two-dot chain line arrow 37 shows that the control module 31 can also directly access the control devices 59 of the people mover 51 and transmit commands 17 for influencing the driving operation F to these control devices. This is the case, for example, if the user 102 enters the people conveyor 51 against the current direction of conveyance and a reduced conveying speed is specified as an instruction 17 for such an atypical movement scene 15.

Fig. 2 shows a perspective view of several people conveyors 61, 71, 81, of which the travel movement F is to be monitored. The monitoring system 1 of fig. 1 is adapted accordingly for this purpose. The monitoring system 1 also has a risk analysis module 11, an interaction module 21 and a control module 31.

In order to be able to monitor a plurality of people mover devices 61, 71, 81, the monitoring system 1 adapted for this purpose has a plurality of motion detection modules 43, 44, 45, 46+ n, 46+2n. In the present exemplary embodiment, two people mover devices 61, 71 designed as escalators are shown in detail. A guardrail drawn in dashed lines symbolizes a number of further people conveyor apparatuses 81. Each of these people mover 61, 71, 81 is respectively associated with two motion detection modules 43, 44, 45, 46+ n, 46+2n, which receive a motion sequence 443, 444, 445, 446. Each of the motion detection modules 43, 44, 45, 46+ n, 46+2n has an identification code 443, 444, 445, 446. For reasons of simplicity, reference numerals 443, 444, 445, 446,. May be used for both the motion sequence and its identification code.

As in the embodiment of fig. 1, in the embodiment of fig. 2, the motion sequences 443, 444, 445, 446. In the event of an identification of a critical situation 101A, 101B, 101C, the hazard analysis module 11 provides the output alarm signals 13A, 13B, 13C with the corresponding identification codes 443, 444, 445, 446.

In contrast to fig. 1, the monitoring module 21 of fig. 2 has a central screen 91 and further screens 93 to 96+2n arranged next to the central screen, wherein for each motion detection module 43, 44, 45, 46+ n, 46+2n a corresponding screen 93 to 996+2n is provided, which respectively shows its motion sequence 443, 444, 445, 446,.. Quadrature.. Upon receiving the alarm signals 13A, 13B, 13C, the interaction module 21 visually displays the sequence of movements 443, 444, 445, 446. To visually highlight the corresponding sequence of movements 443, 444, 445, 446,. The center screen 91 has a larger screen area than the other screens 93 to 96+ 2n.

Based on the transmitted identification codes 443, 444, 445, 446.

The different critical situations 101A to 101C are shown electrically in the environment shown in fig. 2 on the people conveyor 61, 71 and in the vicinity thereof. In accordance with these critical situations 101A, 101B, 101C, a group of possible critical situations is stored in the risk analysis module 11. In particular, the set of critical situations comprises different atypical motion scenes 15, by means of which the motion processes extracted from the motion sequences 443, 444, 445, 446. In this case, the possible locations, at which such critical situations 101A, 101B, 101C can often occur, can also play an important role. The atypical-movement scene 15 in the inclined middle section of the escalator, which reflects a fall, does not occur in the same way in the lobby of the people conveyor 61, 71, 81 or in one of the access areas 56, 57 (see fig. 1). The set of atypical motion scenes 15 can be generated, for example, by a machine learning process by readjusting typical critical situations 101A, 101B, 101C, for example falls or involuntary movements on the personal conveying device 61, 71, 81, by means of a dummy or substitute. The detected and extracted motion sequences can be recorded as atypical motion scenes 15 in the group of atypical motion scenes. Of course, the group of atypical movement scenes can also be supplemented with other atypical movement scenes 15 which lead to accidents during operation of the people mover 61, 71, 81 and are not recognized by the hazard analysis module 11. In case the extracted motion course sufficiently coincides with the atypical motion scene 15, the risk analysis module 11 may assume or determine that a critical situation exists and send an alarm signal 13A, 13B, 13C to the interaction module 21.

As symbolically illustrated by differently sized weights 18X, 18Y, 18Z, the different atypical-motion scenes 15 of the group have different weights 18X, 18Y, 18Z according to a priority level. The critical situation 101A captured by the motion detection module 43 is detected as a "fall" in the risk analysis module 11 and the associated alarm signal 13A is set to the highest weight 18Z, since the continuation of the driving maneuver F may cause serious injury to the falling user 102A.

The critical situation 101B captured by the motion detection module 44 is recognized in the risk analysis module 11 as "stepping in the wrong direction" and the associated alarm signal 13B is set with the smallest weight 18X. Due to the incorrect entry, the user 102B is not directly at risk, but rather interferes with the oncoming user when leaving the people conveyor 71.

The critical situation 101C captured by the motion detection module 46 is recognized in the risk analysis module 11 as "with shopping cart on" and the associated alarm signal 13C is provided with a medium weight 18Y. In this case, the user 102C is in danger only when the user 102C reaches the rising middle portion of the people mover 61 with their shopping cart.

In contrast to fig. 1, in fig. 2, the set of instructions 17 is not stored in the risk analysis module 11, but in a computer unit of a storage medium 29 with an interaction module 21. The instructions 17 may be invoked and tied to the alarm signals in response to the weights 18X, 18Y, 18Z of the alarm signals 13A, 13B, 13C. On clicking the confirmation input area 28, an alarm signal 13A, 13B, 13C provided with the identification code 443, 444, 445, 446,. And the instruction 17 to be converted is transmitted to the control module 31. The influence on the travel movement F of the people mover 61, 71, 81 is achieved by means of the weights or the commands 17 associated with the weights 18X, 18Y, 18Z. Thus, for example, when a critical situation 101A is detected by the motion detection module 43, the command 17 is bound to the warning signal 13A, wherein the control module 31 immediately actuates the safety switch 33 of the respective people mover 71 and triggers an emergency stop.

In the critical situation 101C detected by the movement detection module 46, the command 17 is bound to the warning signal 13C, wherein the control module 31 actuates the safety switch 35 of the respective people mover 61 with a predefined delay time T corresponding to the weight 18Y. Thereby providing sufficient time to alert the user 102C (see below) so that the user leaves the lobby of the people conveyor 61 before reaching the transport area 63 of the people conveyor 61 and triggering a stop.

In the case of a critical situation 101B detected by the movement detection module 44, the command 17 is bound to the warning signal 13B, and these commands, which are symbolically illustrated by dashed-dotted arrows, are transmitted via the control module 31 to the control device 73 of the respective people mover 71. These commands 17 cause the control device 73 to reduce the travel speed of the conveyor belt 75 of the respective people mover 71 according to a predefined deceleration profile.

It goes without saying that in the event of two simultaneously occurring critical situations 101A, 101B occurring on the same people conveyor 71 and the alarm signals 13A, 13B being transmitted to the control module shortly one after the other, the control module 31 preferably switches the command 17 with the higher weight 18Z.

In order to convert the commands 17 in the correct people mover 61, 71, 81, the identification code of the movement sequence 443, 444, 445, 446. In other words, the control module 31 can switch the associated instruction 17 in the correct people conveyor 61, 71, 81 when transmitting the alarm signal 13A, 13B, 13C.

Since a plurality of people conveyors 61, 71, 81 are monitored by means of the monitoring system 1 of fig. 2, it is entirely possible for a plurality of critical situations 101A, 101B, 101C to occur simultaneously as shown. In this case, the hazard analysis module 11 sends the alarm signals 13A, 13B, 13C with the associated weights 18X, 18Y, 18Z directly one after the other to the interaction module 21. The motion sequences 443, 444, 445, 446,.. The motion sequence is now highlighted in turn visually and/or acoustically on the central screen 91 according to its weights 18X, 18Y, 18Z in the interaction module 21, so that the monitoring person can always first evaluate the most critical situation 101A, 101B, 101C.

This "in succession" can be implemented in various ways. Accordingly, the respective motion sequence 443, 444, 445, 446. Switching to the next sequence of motions 443, 444, 445, 446 may also be accomplished by clicking on the confirmation input area 28 or the cancel input area 20 described below.

In the current embodiment of fig. 2, the interaction module 21 generates the cancel input field 20 based on the on-screen alert signals 13A, 13B, 13C in addition to the confirmation input field 28. By manually clicking the cancel input area 20, the interaction module 21 is prompted to cancel the alarm signal 13A, 13B, 13C and to withdraw or no longer display a visual and/or audible highlighting of the corresponding movement sequence 443, 444, 445, 446.

In order that an inadvertent or incorrect cancellation does not lead to a serious accident, the corresponding movement sequence 443, 444, 445, 446 is further analyzed, preferably in the risk analysis module 11, within a predetermined time directly after clicking the cancellation input field 20. Since the operation of the confirmation input field 28 and the operation of the cancellation input field 20 are registered and processed by the computing unit 29, a further analysis of the movement sequences 443, 444, 445, 446.

In order to warn and/or alert the user 102A, 102B, 102C of the passenger conveyor system 61, 71, 81 before the user 102A, 102B, 102C has an effect on the driving operation F, the interaction module 21 outputs an audible and/or visual warning to the user 102A, 102B, 102C of the passenger conveyor system 61, 71, 81 via the output module 121, 122, 123 in the presence of the warning signal 13A, 13B, 13C. The output modules 121, 122, 123 are arranged in the region of the people conveyor 61, 71, 81. According to the invention, the control module 31 controls output modules 121, 122, 123 belonging to the people mover 61, 71, 81, which are associated with the alarm signals 13A, 13B, 13C. Here, the visual and/or audio warning comprises a message relating to a critical situation 101A, 101B, 101C. This is described in more detail below, in terms of the critical situations 101A, 101B, 101C shown in fig. 2.

In the case of a critical situation 101A, a "fall" is identified by the hazard analysis module 11 and a corresponding alarm signal 13A is generated. The identification code 443 of the alarm signal causes the interaction module 21 to select the output module 123 closest to the motion detection module 43. For example, the acoustic warning "notice of emergency stop of escalator" selected on the basis of the weight 18Z is sent via the wireless connection 97 to such an output module 123 designed as a loudspeaker.

In the case of a critical situation 101B, a "step in the wrong direction" is recognized by the risk analysis module 11 and a corresponding warning signal 13B is generated. The identification code 444 of the alarm signal prompts the interaction module 21 to select the output module 121 closest to the motion detection module 44. The output module 123, which is designed as a loudspeaker, sends, for example, via the wireless connection 97, an audible warning "notice of wrong entry zone" selected on the basis of the weight 18X.

In the case of a critical situation 101C, "no entry with a shopping cart" is recognized by the hazard analysis module 11 and a corresponding warning signal 13C is generated. The identification code 446 of the alarm signal causes the interaction module 21 to select the output module 122 that is closest to the motion detection module 46. As a visual warning, for example, an image of the shopping cart shown with a dashed line is sent via the wireless connection 97 to the output module 122 designed as a screen and displayed on the screen. Of course, an alarm can also be emitted in order to increase the attention of the output module. Of course, all devices capable of outputting an audible and/or visual warning can be used as output modules 121, 122, 123. In this case, so-called hologram projectors are particularly effective, by means of which, for example, a dummy can issue warnings and hand movements to the users 102A, 102B, 102C of the people conveyor 61, 71, 81.

Although different embodiments of the monitoring system are shown by means of fig. 1 and 2, it is obvious that they can be combined with each other. The weights shown in fig. 2 can also be implemented in the monitoring device according to fig. 1, for example. Furthermore, the "automatic switching" described in connection with fig. 1 can also be implemented in the monitoring system according to fig. 2 when the same critical situation is detected by a plurality of motion detection modules during its time course.

Finally it is pointed out that concepts such as "having", "comprising", etc. do not exclude other elements or steps, and that concepts such as "a" or "an" do not exclude a plurality. Furthermore, it should be pointed out that characteristics or steps which have been described with reference to one of the above embodiments can also be used in combination with other characteristics or steps of other embodiments described above. Reference signs in the claims shall not be construed as limiting.

Claims (20)

1. Method for monitoring a driving operation (F) of a people mover (51, 61, 71, 81), comprising the following steps:

at least one motion detection module (41,., 46+ 2n) detects a motion sequence (441,., 446+ 2n) of a situation occurring on the corresponding personnel transportation device (51, 61, 71, 81) and transmits the motion sequence (441,., 446+ 2n) to the interaction module (21) and the hazard analysis module (11) in real time;

displaying the motion sequence (441, 91,., + 446+ 2n) on a screen (22, 91,., + 96+ 2n) of the interaction module (21);

in parallel to the display of the motion sequence (441,.., 446+ 2n) on the screen (22, 91,.., 96+ 2n), in the hazard analysis module (11), the motion sequence (441,.., 446+ 2n) is analyzed by means of an analysis algorithm for a critical situation (101,.., 101C) of a user (102,.., 102C) of the personnel transport device (51, 61, 71, 81) to be checked and, as soon as the critical situation (101,.., 101C) is identified, an alarm signal (13,.., 13C) is sent to the interaction module (21);

the interaction module (21) visually and/or acoustically highlights a motion sequence (441,., + 2n) displayed on the screen (22, 91,., + 96+ 2n) based on the alarm signal (13,., + 13C) and generates a confirmation input field (28) on the screen (22, 91,., + 96+ 2n); and

-causing the interaction module (21) to send the warning signal (13,. ·, 13C) to a control module (31) by manually clicking the confirmation input field (28), and-the control module (31) influencing the driving operation (F) of the people mover (51, 61, 71, 81) depending on the received warning signal (13,.., 13C).

2. The method according to claim 1, characterized in that a set of possible critical situations is stored in the risk analysis module (11), which set comprises different atypical motion scenes (15), that the motion processes extracted from the motion sequences (441,.., 446+ 2n) are compared with the atypical motion scenes (15), and that when the extracted motion processes are sufficiently identical to the atypical motion scenes (15), a critical situation (101,.., 101C) is considered to be present, and that a warning signal (13,.., 13C) is sent to the interaction module (21).

3. Method according to claim 2, characterized in that the different atypical-motion scenes (15) of the group of possible critical situations have different weights (18X, 18Y, 18Z) according to the priority level.

4. A method according to claim 3, characterized by influencing the driving operation (F) in accordance with the weight (18X, 18Y, 18Z), whereby the following is performed in accordance with the weight (18X, 18Y, 18Z):

-the control module (31) immediately emergently stops the respective personnel carrier (51, 61, 71, 81); or

-the control module (31) emergency stops the respective people conveyor (51, 61, 71, 81) with a predefined delay time corresponding to the weight (18X, 18Y, 18Z); or

-sending an instruction (17) to a control device (59, 73) of the respective people conveyor (51, 61, 71, 81) to cause the control device (59, 73) to reduce the travel speed of the conveyor belt (75) of the respective people conveyor (51, 61, 71, 81) according to a predefined deceleration profile.

5. Method according to claim 4, characterized in that the control module (31) triggers the emergency stop by operating a safety switch (33, 35) of the respective people conveyor (51, 61, 71, 81).

6. Method according to one of claims 1 to 5, characterized in that the number of motion detection modules (41, ·,46+ 2n) is multiple, a plurality of said motion detection modules (41,..,. 46+ 2n) capturing a motion sequence (441,..., 446+ 2n) of at least two different people mover devices (51, 61, 71, 81), each of said plurality of motion detection modules (41,..., 46+ 2n) having an identification code and equipping the motion sequence (441,..., 446+ 2n) with said identification code, said hazard analysis module (11) equipping the transmitted alarm signal (13,..,. 13C) with a corresponding identification code, and in the control module (31) a movement detection module (41,., 46+ 2n) corresponds one-to-one with the monitored person conveying device (51, 81, 71, 61, 71) via the identification code, and the interaction module (21) visually and/or acoustically highlights only the movement sequence (441,., 446+ 2n) corresponding to the alarm signal (13,., 13C) on the basis of the received alarm signal (13,., 13C) and transmits the alarm signal (13,., 13C) equipped with the identification code to the control module (31) upon clicking the confirmation input field (28).

7. Method according to claim 2 or 3, characterized in that the number of motion detection modules (41,. ·,46+ 2n) is multiple, a plurality of said motion detection modules (41,. ·,46+ 2n) capturing a sequence of motions (441,. ·,446+ 2n) of at least two different personnel transportation devices (51, 61, 71, 81), each of the plurality of motion detection modules (41,. ·,46+ 2n) having an identification code and equipping a motion sequence (441,.., 446+ 2n) with the identification code, the hazard analysis module (11) equipping the transmitted alarm signal (13,...,. 13C) with the corresponding identification code, and in the control module (31) a motion detection module (41,.., 46+ 2n) corresponds one-to-one with the monitored people conveyor (51, 81, 71, 61, 71) via the identification code, and the interaction module (21) visually and/or acoustically highlights only the motion sequence (441,.., 446 2n) corresponding to the alarm signal (13,.., 13C) on the basis of the received alarm signal (13,.., 13C) and transmits the alarm signal (13,.., 13C) equipped with the identification code to the control module (31) upon clicking the confirmation input field (28),

wherein, in the case of a simultaneous identification of a plurality of critical situations (101, 101A, 101C), the hazard analysis module (11) sends immediately following alarm signals (13, 13C) with associated weights (18X, 18Y, 18Z) to the interaction module (21), and the motion sequence (441, 18, 446+ 2n) is highlighted in succession visually and/or acoustically on the basis of the weights (18X, 18Y, 18Z).

8. Method according to any one of claims 1 to 7, characterized in that the interaction module (21) generates a cancellation input field (20) on the screen (22, 91, ·,96+ 2n) in addition to the confirmation input field (28) on the basis of the alarm signal (13, ·, 13C), and causes the interaction module (21) to cancel the alarm signal (13,..., 13C) by manually clicking the cancellation input field (20) and to withdraw the highlighting, visually and/or acoustically, of the corresponding motion sequence (441,..., 446+ 2n).

9. Method according to claim 8, characterized in that after clicking on the confirmation input area (28) or the cancellation input area (20), the display of the confirmation input area (28) and/or the cancellation input area (20) on the screen (22, 91,....., 96+ 2n) is cancelled.

10. Method according to claim 8 or 9, characterized in that immediately after clicking the cancel input area (20), the corresponding motion sequence (441,...; 446+ 2n) is analyzed in the risk analysis module (11) for a predetermined time.

11. Method according to any one of claims 1 to 10, characterized in that the screen (22) is divided into a plurality of first screen areas (24, 25, 26) and one second screen area (23), the first screen areas (24, 25, 26) being smaller than the second screen area (23), there being one corresponding first screen area (24, 25, 26) for each motion detection module (41,.. Gtoreq.46 + 2n), on receipt of the alarm signal (13,. Gtoreq.13C), the interaction module (21) displaying a motion sequence (441,. Gtoreq.446 2n) corresponding to the alarm signal (13,. Gtoreq.13C) in a visible manner on the second screen area (23).

12. The method according to any one of claims 1 to 10, characterized in that the interaction module (21) has a central screen (91) and further screens (92, ·,96+ 2n) arranged next to the central screen, there being one corresponding further screen (92,. Page.,. 96+ 2n) for each motion detection module (41,. Page.,. 46+ 2n), and that upon receiving an alarm signal (13,. Page., 13C) the interaction module (21) displays a motion sequence (441,. Page.,. 446+ 2n) corresponding to the alarm signal (13,. Page., 13C) in a visual manner on the central screen (91).

13. The method according to any one of claims 1 to 12, characterized in that the interaction module (21) outputs an audible warning to a user (102,.., 102C) of the people conveyor (51, 61, 71, 81) by means of a first output module (121, 123) when an alarm signal (13,.., 13C) is present.

14. The method according to claim 13, characterized in that the first output module (121, 123) is arranged in the area of a people conveyor (51, 61, 71, 81) corresponding to the alarm signal (13,.., 13C).

15. The method according to any one of claims 1 to 14, characterized in that the interaction module (21) outputs a visual warning to a user (102,.., 102C) of the people conveyor (51, 61, 71, 81) via a second output module (122) when an alarm signal (13,.., 13C) is present.

16. The method according to claim 15, characterized in that the second output module (122) is arranged in the area of a people conveyor (51, 61, 71, 81) corresponding to the alarm signal (13,. 13C).

17. The method according to claim 13 or 15, characterized in that the acoustic warning and/or the visual warning comprise a notification relating to a critical situation (101,.., 101C).

18. The method according to claim 1, characterized in that the motion sequence (441,. ·,446+ 2n) is a digitized series of photographs or video streams.

19. The method of claim 1, wherein the motion detection module (41,..;, 46+ 2n) is a camera, a scanner, or a sensor.

20. A monitoring system (1), the monitoring system (1) being configured to perform the method according to any one of claims 1 to 19, the monitoring system (1) comprising: at least one said danger analysis module (11), said interaction module (21), said control module (31), and said at least one motion detection module (41,., 46+, 2n) adapted to a corresponding personnel transportation device (51, 61, 71, 81),

wherein at least one of said risk analysis module (11), said interaction module (21), said control module (31) and said at least one motion detection module (41,.;, 46+ 2n) remain connected to each other via a data network (3).

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