EP3916694A1 - Method for locating persons in a publicly accessible space and computer method for same - Google Patents

Abstract

The invention relates to a method for locating people (PS1 ... PS8) in a publicly accessible space (RM), in particular a train station area such as a platform (BS). People who are in the room (RM) are located and the determined location coordinates of the people (PS1 ... PSN) are processed together with the aid of a computer. During processing, the distance (A) between people (PS1 ... PS8) and neighboring people (PS1 ... PS8) is determined, the distance (A) is compared with a specified minimum distance (MA) and a trigger signal is generated if a determined distance (A) falls below the minimum distance (MA). In this way, measures can be taken to reduce the condition, for example because of a risk of infection. It can e.g. B. a loudspeaker announcement GQ. Furthermore, a computer program product and a provision device for the same are disclosed.

Description

The invention relates to a method for locating people in a publicly accessible space, in particular a train station area such as a platform
Method for locating people in a publicly accessible space, in particular a train station area such as a platform, whereby people who are in the space are located and the determined location coordinates of the people are processed jointly with the aid of a computer. The invention also relates to a computer program product and a provision device for this computer program product, the computer program product being equipped with program commands for carrying out this method.

The document DE 10 2004 040 057 A1 describes a traffic control system which comprises at least one control means for at least one means of transport and / or for people, several detection units and a central unit. The central unit is connected to the registration units and to the control means. The detection units are intended to determine the number of people who are in a certain spatial area at a certain point in time, so that the central unit can control the control means as a function thereof in order to transport the detected persons from certain spatial areas to lead out or into certain spatial areas. There is data communication with the control of the means of transport.

The measure described in the prior art is used to optimize the flow of people, in particular when operating railway systems or in other public spaces, by knowing the people in the room and making it possible to conduct the flow of people appropriately. aside from that For example, a means of transport can be adapted to the existing needs (for example by clocking public transport or adjusting the passenger capacity of the individual vehicles).

However, the current development of 2020 (dealing with the pandemic triggered by the Covid-19 virus (hereinafter referred to as the corona pandemic) shows that in such a situation optimization systems of the known type are overwhelmed. In this situation, it is less about the The number of people who are to be transported by public transport or to move in any other way in a public space. The number of people is reduced due to the measures taken by the pandemic. Rather, it is necessary with the reduced volume To review and implement safety measures that are specified by the specifications for infection protection.

The object of the invention is to provide a method for locating people in a publicly accessible space, in particular a train station or a platform, with which the risk of infection from airborne diseases can be reduced. In addition, the object of the invention is to provide a computer program product and a provision device for this computer program product with which the aforementioned method can be carried out.

• der Abstand der Personen zu jeweils benachbarten Personen ermittelt wird,
• der Abstand mit einem festgelegten Mindestabstand verglichen wird,
• ein Auslösesignal generiert wird, wenn ein ermittelter Abstand den Mindestabstand unterschreitet.

This object is achieved according to the invention with the initially specified subject matter (method) in that, during processing

• the distance between people and neighboring people is determined,
• the distance is compared with a specified minimum distance,
• a trigger signal is generated when a determined distance falls below the minimum distance.

When implementing safety precautions as part of the aforementioned corona pandemic, it has proven useful that people in public spaces maintain a safety distance of at least 1.5 m, preferably 2 m. This is where the invention comes into play, in that a distance monitoring of the same is carried out in the method for locating the people. This distance monitoring includes at least the steps of determining the distance between neighboring people and comparing the determined distance with a required minimum distance, preferably 1.5 m, more preferably 2 m. If this minimum distance between neighboring people is not reached, a trigger signal is generated, which can be used to derive further process steps of the method according to the invention.

This advantageously makes it possible to use existing location systems for people, such as those already in use at train stations, for example, through an improved evaluation process in order to check and, if necessary, enforce specifications from infection protection, for example the current corona pandemic. All that is necessary is to adapt the evaluation software if the hardware infrastructure is already installed. This advantageously creates a time advantage when implementing the measures, since they have to be implemented as quickly as possible, especially when the safety precautions are relaxed.

In connection with the invention, “computer-aided” or “computer-implemented” can be understood to mean, for example, an implementation of the method in which one computer / processor or several computers / processors executes or executes at least one method step of the method.

Unless otherwise stated in the following description, the terms “create”, “calculate”, “calculate”, “determine”, “generate”, “configure”, “modify” and the like preferably refer to actions and / or processes and / or processing steps that change and / or generate data and / or convert the data into other data. The data are in particular available as physical quantities, for example as electrical impulses or also as measured values. The necessary instructions / program commands are summarized in a computer program as software. Furthermore, the terms “receive” “send”, “read in”, “read out”, “transmit” and the like relate to the interaction of individual hardware components and / or software components via interfaces. The interfaces can be implemented in terms of hardware, for example wired or as a radio link, and / or in software, for example as interaction between individual program modules or program parts of one or more computer programs.

The term "computer" is to be interpreted broadly, it covers all electronic devices with data processing properties. Computers can thus be, for example, personal computers, servers, handheld computer systems, pocket PC devices, mobile radio devices and other communication devices that process data with the aid of computers, processors and other electronic devices for data processing, which can preferably also be connected to a network. In connection with the invention, a “memory unit” can be understood to mean, for example, a computer-readable memory in the form of a random access memory (RAM) or data memory (hard disk or a data carrier).

In connection with the invention, a “processor” can be understood to mean, for example, a machine, for example a sensor for generating measured values or an electronic circuit. A processor can in particular be a central processing unit (CPU), a microprocessor or a microcontroller, for example an application-specific integrated circuit or a digital signal processor, possibly in combination with a memory unit for storing program commands, etc. . A processor can, for example, also be an IC (integrated circuit), in particular an FPGA (Field Programmable Gate Array) or an ASIC (Application-Specific Integrated Circuit), or a DSP (Digital Signal Processor). A processor can also be understood to be a virtualized processor or a soft CPU. For example, it can also be a programmable processor that is equipped with a configuration for executing a computer-aided method.

A "cloud" is to be understood as an environment for "cloud computing" (German computer cloud or data cloud). What is meant is an IT infrastructure that is made available via a network such as the Internet. It usually includes storage space, computing power or application software as a service without these having to be installed on the local computer using the cloud. These services are offered and used exclusively through technical interfaces and protocols, such as a web browser. The range of services offered in the context of cloud computing encompasses the entire spectrum of information technology and includes infrastructure, platforms and software, among other things.

“Program modules” are to be understood as individual functional units which enable the program sequence according to the invention. These functional units can be implemented in a single computer program or in several computer programs that communicate with one another. The interfaces implemented here can be implemented in terms of software within a single processor or in terms of hardware if several processors are used.

According to one embodiment of the invention, it is provided that the time course of the generation and / or the local distribution of trigger signals is determined.

Of course, it is possible to display each trigger signal via a suitable output. Here, for example, a graphic output device can be used that represents the public space from above, with both the localized people and the trigger signal being displayed optically on the output device. As a result, it is possible for the user, as the viewer of the output device, to quickly and reliably identify the shortfall in minimum distances and to react appropriately (for example by means of a loudspeaker announcement).

According to one embodiment of the invention, it is provided that a condition is calculated from the time profile and / or the local distribution of the triggering signals, and when this condition is met, a warning signal is generated.

The idea of generating a warning signal is based on the knowledge that it can be difficult to react immediately to any undershoot of the minimum distance. On the one hand, this requires a fine sensor system or very attentive operating personnel. On the other hand, there is the problem that if people are warned too often, at some point they no longer take note of the warning or could no longer take it seriously.

It therefore makes sense to collect trigger signals, so to speak, and only request a reaction from the people when a defined threshold value has been reached.

According to one embodiment of the invention, it is provided that the condition is calculated from a time quotient, formed by the trigger signals per unit of time, the condition being met when a specified time-related threshold value is exceeded.

This advantageously ensures that not every violation of the distance rule immediately leads to a notification of the people in the room. This would possibly lead to a situation in which the willingness of the addressed people to take the appeals into account would decrease due to frequent announcements.

According to one embodiment of the invention, it is provided that regions in space are determined from the local distribution in which trigger signals are generated comparatively often. For example, the platforms at a train station can be viewed locally as regions. Another possibility is to consider the train parts of a train, in particular the vehicles, individually.

This advantageously improves the spatial resolution with which violations of the distance regulation can be determined. In particular, this enables a framework that is adapted to the premises and how to react to violations of the distance rules. If, for example, there is not enough space in the area of the violations, there may be no possibility for the people to react to an announcement. In this case, you should refrain from doing this, as it would only cause uncertainty among the addressed people if the problem of non-compliance with the distance rules is pointed out. Such a situation could arise, for example, if a train stops at a platform and the people who want to get on meet the people who are just getting off on the platform. At these moments, it can be more advantageous to briefly tolerate violations of the distance rules, as the situation usually resolves itself quickly due to the train pulling away.

According to one embodiment of the invention it is provided that the local distribution in the region is compared with an average distribution in the space.

In this way, a measure can advantageously be created for the assessment of where, ie in which regions of the room, steps must be taken in case of doubt in order to comply with the distance rules. Under the premise that the average distribution in the room should essentially be unproblematic due to compliance with the rules, a denser than average distribution is likely to be problematic. An algorithm that uses these specifications does not advantageously have to carry out an exact distance measurement, but rather derives the necessity of measures in a simple manner by comparing the density of people relative to each other.

According to one embodiment of the invention, it is provided that the condition is calculated from a space quotient, formed by the trigger signals per unit area, the condition being met when a fixed, location-related threshold value is exceeded.

For example, it is possible to simply count up the trigger signals in a certain region repeatedly in a certain period of time. This creates a statistical quantity that includes both a time component (period) and a spatial component (region). After the relevant period has elapsed, the counting variants for the trigger signals can be reset to zero.

According to one embodiment of the invention, it is provided that the condition is calculated from a time quotient, formed by the trigger signals per unit of time, and from a space quotient, formed by the trigger signals per unit area, the condition being met when a specified space-time-related threshold value is exceeded .

This monitoring method has the advantage that both the time component and the space component can be taken into due consideration. Defined space segments can be defined in the space to be monitored which, for example, abut each other (squares, rectangles, regular hexagons) so that seamless monitoring with the space segments is possible. The time periods to be considered must be chosen so long that counting the trigger signals already generates a representative value. Overall, the optimization of the process involves collecting empirical values or a simulation which, on the one hand, leads to sufficiently accurate results and, on the other hand, only takes effect when sufficient rule violations (equivalent to the generation of trigger signals) have been identified.

According to one embodiment of the invention, it is provided that the space quotient is used for a spatial density analysis of the number of people.

In this way, so-called hotspots, where the density of people is particularly high, can advantageously be determined. This can take place, for example, when people meet who know each other and who do not observe the distance rules during communication. In this case, the people concerned should be made aware of the problem. Another possibility is that the hotspot comes about because it is an operational or construction-related bottleneck. Construction-related bottlenecks can be created, for example, by a passage or an escalator. Operational bottlenecks arise, for example, when a train stops, since people can only use the available doors when getting on and off. In such cases, people can be advised to leave the bottleneck as quickly as possible, as far as they can.

• ein virtueller Raum von dem Raum generiert wird,
• auf Grundlage die erfasste Dichteanalyse mindestens ein virtueller Personenstrom generiert wird,
• Parameter für den virtuellen Raum und/oder für den Personenstrom erstellt werden,
• die Simulation mit veränderten Parametern wiederholt durchgeführt wird.

According to one embodiment of the invention, it is provided that the density analysis is used to plan the management of flows of people in the room. According to one embodiment of the invention, it is provided that the density analysis is used to simulate flows of people, with

• a virtual room is generated from the room,
• at least one virtual flow of people is generated on the basis of the recorded density analysis,
• Parameters for the virtual room and / or for the flow of people are created,
• the simulation is carried out repeatedly with changed parameters.

For example, a service provider such as a construction company can be consulted for this procedure in order to provide advice on the implementation of structural measures. It is particularly advantageous if the advice is supported by a simulation that imitates the flow of people and can thus point out potential congestion in the flow of people. Even outside of times when compliance with minimum distances is absolutely necessary for health reasons, building planning that avoids bottlenecks benefits from the fact that In periods of peak utilization of the public transport system, an unproblematic flow of people in the space such as a platform is possible. Even in the event of danger, it is easier to clear the room if the rules mentioned are observed.

According to one embodiment of the invention, it is provided that the time-related and / or the location-related threshold value is determined from the statistical risk of infection with regard to a disease that can be transmitted between people. Thus, the operation or at least a limited operation of, for example, public transport can be maintained for longer without endangering the people who use the public transport more than necessary. This concerns the health of the people and thus an asset worth protecting. On the other hand, public transport must also be available in times of crisis so that public life does not come to a complete standstill. Necessary trips and transports are to be made possible even in times of crisis.

According to one embodiment of the invention, it is provided that the trigger signals and / or the warning signals are transmitted to an output device via a first interface.

This advantageously enables further processing either by a user who checks the output, or computer-aided further processing. Data that have been further processed by a computer can also be made accessible to users via the output device.

An operating personnel can be named as the target group as the user of the output, for example station personnel. However, it is also possible to output it to the people who are moving in the room and are therefore the subject of the current analysis. This output can also contain a recommendation for the behavior of the people. The output to the last named persons can be carried out automatically (previously created information texts as loudspeaker announcements) or depending on the situation by the operating personnel.

According to one embodiment of the invention it is provided that a noise source and / or a light source and / or a display panel and / or an optical projector and / or a computer is used as the output device.

Loudspeakers are the preferred source of noise. These are preinstalled in public spaces, in particular train stations, in such a way that loudspeaker announcements can easily be heard by people in the entire train station. Another way to use a sound source is to use signal tones. Like light signals, these attract people's attention.

A distinction must be made between display boards and optical projectors. These also generate light signals in a broader sense. However, this is more about the transmission of information. For example, display panels installed on a platform could provide an indication of where the density of people on the platform is lower and where it is higher. It is possible to appeal to the personal responsibility of the people to avoid areas of the public space in which there is already a high density of people.

Projectors can be used to display information on available areas in public space. The floor is suitable for this purpose, for example, which can be used specifically through lighting effects to show people areas with increased density of people (i.e. smaller distances between neighboring people and areas with low density of people. Connected to display boards or loudspeaker announcements, this can be pointed out by the projectors to use the transmitted information independently to comply with measures to protect against infection.

Finally, of course, a computer can also be used as an output device. In this context, it should be pointed out that the computer as such should already have an interface for the user via which the user can perceive the output of the data in question. this is usually a computer screen or some other type of display. The output data can be modified or generated by the computer. The output is used in particular for the staff to derive measures that are appropriate to the situation and individually from the information presented and to output them to the people in the room.

It is advantageous to display the area to be monitored during the output. The space is preferably represented as a two-dimensional area. The people who have been located are preferably shown in this space true to scale with regard to the clear distances between the people. Furthermore, aids are displayed on the surface that make it easier for a user to identify cases in which the minimum distance has not been observed.

One possibility of the mentioned marking is to surround the people shown on the output device with a circle that corresponds to the minimum distance. Another possibility is that people (preferably shown as a circle) are shown in different colors. For example, people who reliably maintain a minimum distance from their neighbors could be shown in one color (for example green), and people who do not keep the safety distance in a different color (for example red).

Optionally, people who are in danger of falling below the minimum distance can be displayed in a different color (e.g. yellow). The risk of falling below the minimum distance can be statically defined by a buffer zone that surrounds the circular zone of the minimum distance in a ring shape. Additionally or optionally it is possible to determine the movement patterns of people during the evaluation. If the direction of movement of a person is known, the likelihood that a minimum distance will not be exceeded can be better assessed.

Furthermore, a computer program product is provided with Program instructions for carrying out the mentioned method according to the invention and / or its exemplary embodiments are claimed, the method according to the invention and / or its exemplary embodiments being able to be carried out in each case by means of the computer program product.

In addition, a provision device for storing and / or providing the computer program product is claimed. The provision device is, for example, a data carrier that stores and / or provides the computer program product. Alternatively and / or additionally, the provision device is, for example, a network service, a computer system, a server system, in particular a distributed computer system, a cloud-based computer system and / or virtual computer system, which the computer program product preferably stores and / or provides in the form of a data stream.

It is provided, for example, as a download in the form of a program data block and / or command data block, preferably as a file, in particular as a download file, or as a data stream, in particular as a download data stream, of the complete computer program product. This provision can, for example, also take place as a partial download, which consists of several parts and, in particular, is downloaded via a peer-to-peer network or made available as a data stream. Such a computer program product is read into a system using the supply device in the form of the data carrier, for example, and executes the program commands so that the method according to the invention is carried out on a computer.

Further details of the invention are described below with reference to the drawing. The same or corresponding drawing elements are each provided with the same reference numerals and are only explained several times to the extent that there are differences between the individual figures.

The exemplary embodiments explained below are preferred embodiments of the invention. In the exemplary embodiments, the described components of the embodiments each represent individual features of the invention that are to be considered independently of one another, which also develop the invention independently of one another and are thus also to be regarded as part of the invention individually or in a combination other than the one shown. Furthermore, the described embodiments can also be supplemented by further features of the invention that have already been described.

FIG 1

ein Ausführungsbeispiel eines Raums, in dem ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens durchgeführt wird, als dreidimensionale schematische Ansicht,

FIG 2

ein Ausführungsbeispiel eines Displays, bei dem bei der Ausführung eines Ausführungsbeispiels des erfindungsgemäßen Verfahrens ein Raum dargestellt wird, schematisch,

FIG 3

eine Anordnung von Hardwarekomponenten, welche bei einem Ausführungsbeispiel des erfindungsgemäßen Verfahrens zum Einsatz kommen können, als Blockschaltbild,

FIG 4

ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens als Ablaufdiagramm.

Show it:

FIG 1

an embodiment of a room in which an embodiment of the method according to the invention is carried out, as a three-dimensional schematic view,

FIG 2

an exemplary embodiment of a display in which a room is shown when an exemplary embodiment of the method according to the invention is carried out, schematically,

FIG 3

an arrangement of hardware components, which can be used in an embodiment of the method according to the invention, as a block diagram,

FIG 4

an embodiment of the method according to the invention as a flowchart.

According to FIG 1 a platform BS is shown in front of a track GL, this ensemble forming a room RM which is to be monitored. On the platform BS there are people PS1 ... PS8 who, for example, are on a train FZ1, FZ2 (cf. FIG 2 ) wait. As partially in FIG 1 shown, neighboring persons PS1 ... PS8 each have a distance A from one another. Furthermore, in FIG 1 a minimum distance MA is shown, which was determined on the basis of specifications of the infection protection. In case of a Risk of infection with the corona virus Covid-19, this minimum distance MA can be 1.5 m, for example. The two distances A shown show that the persons PS1 and PS2 maintain the minimum distance MA, while the persons PS3 and PS4 stand too close to one another (the three-dimensional representation is according to the distances with regard to the distances FIG 1 to be understood as true to scale).

A camera CM is installed to monitor the room RM, which takes a picture of the platform BS, on which the people PS1 ... PS8 can be recognized. This image can be evaluated in a control center LZ, for example. The term control center is to be understood in the broadest sense and includes not only influencing train traffic, but also warning management. The interfaces S1 and S2 are available for communication with the control center LZ.

Various measures to maintain the minimum distances MA can be initiated via the control center LZ (more on this below). In order to influence the people PS1 ... PS8 on the platform BS, different output options can be used. Hardware for this is a noise source GQ (in particular a loudspeaker, but a siren is also possible), light sources LQ in the form of traffic lights with the colors red and green above passageways DG from and to the platform BS, projectors PJ, the images on the Platform BS can project, as well as a display board AT are available. These can be used in different ways.

The passages can be made with the in FIG 1 Light sources LQ shown as traffic lights for the people PS1 ... PS8 who want to leave the platform BS, for example blocked as required if the number of people behind the passages DG (to be monitored with measures not shown, which are analogous to those in room RM can) is too high.

Alternatively, the noise source GQ can be used for loudspeaker announcements, which can be individually adapted to the current situation. The users of the station are used to such loudspeaker announcements and therefore easy to reach in this way. The display panel AT can also be used to display information, preferably text-bound. These are the display boards that are usually mounted on platforms BS and z. B. also show train delays or a reverse train sequence.

The projectors PJ represent a special feature. These are suitable for projecting information onto the floor of the platform BS. These can be represented in the form of symbols SB, with this in FIG 1 Examples are shown. The symbols exist in the embodiment according to FIG 1 from a kind of traffic sign, as it is familiar to users from road traffic. Because of the higher density in FIG 1 The front platform area shown there is, for example, the passage DG located there marked with a "no entry" sign as a symbol because other people (not shown) should use the other passage DG in the rear area of the platform BS. The sign can be found here, which shows, for example, the direction in the roundabout.

A circle with a green tick is projected between people PS1 ... PS8 who maintain a minimum distance MA (in the example PS1, PS2) in order to encourage these people to continue to observe the safety measures. A "Caution" sign is displayed on the floor between the people PS3, PS4 in order to inform them individually that the safety measures are being observed.

Another possibility of generating awareness of the problem among the people PS1... PS8 is to represent markings MR as points on the platform BS, which ensure the minimum distance MA. They are intended to encourage people PS1 ... PS8 to reach the optimal distances A from one another by stepping on the markings and thus to ensure the maximum capacity utilization of the platform BS, depending on the situation.

In FIG 2 a display DP is shown, which is connected to a computer CP (cf. FIG 3 ) and in the control center LZ is localized. Here the platform BS, the passages DG, the people PS1 ... PS8 and the track GL can be seen schematically. The vehicles FZ1, FZ2 of a train are just stopping at the platform BS.

In addition, information for the station staff are shown in the display DP, the z. B. can be used to appropriate loudspeaker announcements about the noise source GQ according to FIG 1 to create.

The symbols SB are shown, for example, which are similar to those in FIG FIG 1 can be used at the passages DG as well as in the vehicles FZ1, FZ2. The interpretation by the station staff regarding the passageways DG is closed FIG 1 has already been described. The vehicles FZ1, FZ2 also have a load indicator AA that is related to the symbols SB in the vehicles FZ1, FZ2. If the load in vehicle FZ1 is high, i.e. 80%, the symbol shows that nobody should get into this vehicle FZ1.

The situation is different with vehicle FZ2, which is only used to capacity to 10% and where the symbol shows that this vehicle should be boarded preferentially. A corresponding loudspeaker announcement can have a positive influence on the flow of people so that they can already adjust during the waiting time to which of the vehicles FZ1, FZ2 are likely to be able to comply with the distance rules. For this purpose, the display DP also shows the subdivision of the platform BS into platform areas BB, which are identified by capital letters in the long-distance traffic customary in Germany (other designations are conceivable).

Furthermore, the representation of the people PS1 ... PS8 according to helps FIG 1 the station staff to visually monitor compliance with the distance rules. If, in the example, people PS1, PS2 maintain the minimum distance MA, the points that represent people PS1, PS2 have a different color (in FIG 2 white) as persons PS3, PS4 who do not keep the safety distance (according to FIG 2 shown in black). In addition, the people are PS1 ... PS8 surrounded by circles of a radius R corresponding to half the minimum distance MA, so that falling below the minimum distance MA automatically leads to these circles intersecting with radius R. This, too, is a criterion that can be quickly identified optically for the station staff.

In FIG 3 the interaction of the components already described is in accordance with FIG 1 and FIG 2 shown as a block diagram. The display DP can be seen, for example, which is connected to a computer CP in the control center LZ. The method is essentially carried out in the computer CP. Another computer CP2 is operated by a service provider DL. This computer CP2 is intended to be used for simulation calculations for the purpose of planning the construction of future train stations, for example (more on this below).

Another area is formed by the room RM, which is monitored and in which the platform BS is located. A connection to the camera CM is implemented here via the second interface S2 and a connection to the output devices, that is to say the noise source GQ, the light source LQ, the projector PJ and the display panel AT, via the first interface S1.

Of the FIG 4 a possible sequence of the procedure can be seen. Here, too, the system boundaries of the room to be monitored RM and of the computer CP, the control center LZ and the service provider DL are shown with dash-dotted lines. Unlike in FIG 3 there is therefore a fourth interface S4 between the control center LZ and the computer CP. In other words, a computer CP which is not located in the control center LZ is used for the calculations according to the method according to the invention. Of course, the control center also has a computer (not shown) for the purpose of the control tasks.

The method begins (start) with a localization of the people PS1 ... PS8 on the platform BS in the room RM. This is referred to as a localization step LOC. This is followed by a query step A <MA, whereupon it is asked whether the Minimum distance MA is not reached with certain neighboring people. If this is not the case, a next localization step LOC is carried out. If an undershoot is determined, a trigger signal AS is generated, which indicates the violation of the distance rules.

The trigger signal AS can be used directly in order to generate an output via the interface S1, for example via the projector PJ, in such a way that the relevant pair of people is optically informed of compliance with the distance rules. However, it is also possible, in a further step, to track the time profile ZVL and the local distribution OVT of the generation of trigger signals AS. This makes it possible to only react with an output if there is a certain accumulation of rule violations.

For this purpose, a process is started which, for example, specifies the requirements for distance compliance (according to FIG 4 ) due to the spread of the Covid-19 virus). Time quotients ZQ, for example violations per minute, or room quotients RQ, for example violations per square meter, can be determined from these specifications for the occurrence of rule violations. These also serve to define a time-related threshold value ZSW for the temporal occurrence and a spatial (ie local) threshold value RSW for the spatial (ie local) density. As in FIG 4 , shown, can be used directly to formulate a condition BD.

However, it is particularly advantageous to define a space / time-related threshold value from the spatial and temporal relationships, since a risk of infection can be determined with particular certainty if both the spatial and the temporal components are taken into account at the same time.

The condition BD is transferred via the interface S4 to the process running in the computer CP, so that, based on the time profile ZVL and / or the local distribution OVT of the rule violations, it can be checked whether the condition BD for a The need for action has been met. If this is not the case, further trigger signals AS are repeatedly collected.

If the condition BD is met, a warning signal WS is generated. This can for example be output to the control center LZ via the interface S4 in order to be shown there on the display DP. The station staff can then make an announcement in the room RM via the interface S1. Of course, a trigger signal AS can also already be shown on the display DP via the interface S4 (see also the explanations relating to this FIG 2 ).

Another possibility is to evaluate the warning signal by an evaluation step ALG carried out automatically in the computer CP and to automatically send an output via the interface S1 to one of the output devices LQ, GQ, PJ, AT in accordance with the result generated in this way. This can involve the measures mentioned by way of example in accordance with FIG 1 Act.

Furthermore, a service provider DL can be obliged via an interface to evaluate the data from the evaluation step ALG and thereby evaluate the behavior of the people in a simulation step SIM. By examining various measures, the next step can be to determine whether the protective effect PROT can be improved particularly well with certain measures. If this is not the case, a next simulation step SIM is carried out. If an optimization is found, a change CHANGE can be defined, which can be introduced both in the definition of the specifications ZQ, RQ, ZSW, RSW, RZSW and thus also in the condition BD and / or the evaluation step ALG is modified. Then the process is stopped.

List of reference symbols

PS1 ... PS8

person

RM

space

A.

distance

MA

Minimum distance

GL

track

LZ

Control center

DL

service provider

BS

platform

DG

Passage

CM

camera

FZ1, FZ2

vehicle

SB

symbol

MR

marker

BB

Platform areas

R.

radius

ZVL

temporal course

OVT

local distribution

AS

Trigger signal

WS

Warning sign

BD

condition

ZQ

Time quotient

RQ

Space quotient

RSW

spatial threshold

ZSW

time threshold

RZSW

space-time related threshold

LOC

Location step

ALG

Evaluation step

SIM

Simulation step

PROT

Protective effect

CHANGE

modification

CP, CP2

computer

DP

Display

GQ

Noise source

LQ

Light source

AT

Scoreboard

PJ

projector

S1 ... S5

Interfaces

Claims (16)

Method for locating people (PS1 ... PS8) in a publicly accessible room (RM), in particular a station area such as a platform (BS),
whereby • People (PS1 ... PS8) who are in the room (RM) are located, • the determined location coordinates of the persons (PS1 ... PS8) are processed together with the aid of a computer, characterized,
that in processing • the distance (A) between people (PS1 ... PS8) and neighboring people (PS1 ... PS8) is determined, • the distance (A) is compared with a specified minimum distance (MA), • a trigger signal (AS) is generated when a determined distance (A) falls below the minimum distance (MA). Method according to claim 1,
characterized,
that the temporal course (ZVL) of the generation and / or the local distribution (OVT) of trigger signals (AS) is determined. Method according to claim 2,
characterized,
that a condition (BD) is calculated from the temporal course (ZVL) and / or the local distribution (OVT) of the trigger signals (AS), and when it is fulfilled, a warning signal (WS) is generated. Method according to claim 3,
characterized
that the condition (BD) is calculated from a time quotient (ZQ), formed by the trigger signals (AS) per unit of time, the condition (BD) being met when a specified time-related threshold value (ZSW) is exceeded. Method according to one of Claims 2 or 3,
characterized,
that from the local distribution (OVT) regions in the room (RM) are determined in which trigger signals (AS) are generated comparatively often. Method according to claim 5,
characterized,
that the local distribution (OVT) in the region is compared with an average distribution in the space (RM). Method according to one of Claims 5 or 6, which refer back to Claim 3,
characterized,
that the condition (BD) is calculated from a space quotient (RQ), formed by the trigger signals (AS) per unit area, whereby the condition (BD) is fulfilled when a specified space-related threshold value (RSW) is exceeded. Method according to one of Claims 2 or 3,
characterized,
that the condition (BD) is calculated from a time quotient (ZQ), formed by the triggering signals (AS) per unit of time, and from a space quotient (RQ), formed by the triggering signals (AS) per unit area, whereby the condition (BD) is fulfilled when a specified space-time-related threshold value (RZSW) is exceeded. Method according to one of Claims 7 or 8,
characterized,
that the space quotient (RQ) is used for a spatial density analysis of the number of people (PS1 ... PS8). Method according to claim 9,
characterized,
that the density analysis is used for planning the management of flows of people in the room (RM). Method according to one of Claims 9 or 10,
characterized,
that the density analysis is used for a simulation of pedestrian flows, whereby • a virtual room is generated from the room (RM), • At least one virtual flow of people is generated on the basis of the recorded density analysis, • Parameters for the virtual room and / or for the flow of people are created, • the simulation is carried out repeatedly with changed parameters. Method according to claim 4, or one of claims 7 to 11,
characterized,
that the time-related (ZSW) and / or the space-related (RSW) threshold value is determined from the statistical risk of infection with regard to a disease that can be transmitted between people (PS1 ... PS8). Method according to one of the preceding claims,
characterized,
that the trigger signals (AS) and / or the warning signals (WS) are transmitted to an output device. Method according to claim 13,
characterized,
that a noise source (GQ) and / or a light source (LQ) and / or a display board (AT) and / or an optical projector (PJ) and / or a computer (CP), in particular its display (DP), are used as the output device will. Computer program product with program instructions for carrying out the method according to one of Claims 1 to 14. 16. The provision device for the computer program product according to claim 15, wherein the provision device stores and / or provides the computer program product.

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