CN116128212A - Urban rail station operation scene arrangement method and system based on BPMN - Google Patents

Abstract

The application provides a method and a system for arranging urban rail station operation scenes based on BPMN, which are characterized in that various components in a component library are called in an arranging drawing board to arrange the components to form business scenes in the station operation process, then the corresponding components are connected according to the selection and the setting of operators to arrange to form scene flows, further a flow engine is triggered in a flow simulator to perform flow simulation, each component in the business scenes is controlled to execute corresponding task logic according to the scene flows, scene availability verification and flow optimization are performed, and finally task flow files are formed for the system to call and execute when needed. The method and the system are based on station actual business, and two behaviors of construction and configuration are separated through a 2-level operation method, so that the utilization rate of a componentized scene and the scene dynamic variability are improved. The method for arranging the scene by the components and the process engine improves the construction capability of the station scene, increases the toughness of the station scene and improves the working efficiency and the safety of the station.

Description

Urban rail station operation scene arrangement method and system based on BPMN

Technical Field

The application relates to urban rail train dispatching management technology, in particular to an urban rail station operation scene arrangement method and system based on BPMN.

Background

The urban rail station has a plurality of operation scenes, strong field uncertainty and low personnel disposal efficiency. The method is characterized in that the operation time periods of station opening, operation, inspection, maintenance, station closing, night construction and the like are required to be reasonably arranged and joined under different operation scenes, and the related equipment of the station is triggered to correspondingly execute different program instructions when the specific arrangement state of each scene is correspondingly executed so as to ensure the operation stability of the whole equipment of the station.

At present, when station operators respond to different scenes in a station, the operators can hardly find out the proper processing mode for coping with various emergency conditions immediately, and the operators can hardly and rapidly handle the emergency situations. In addition, the inspection path is complex in the inspection process of station operators, various equipment and facilities are required to be adjusted to a specific state in different scenes, coordination is difficult, errors are easy to occur, and the conditions of incomplete inspection and disposal are easy to occur. The existing station system needs to be manually fuelled for a long time to form a set of proper treatment rules, is low in efficiency, and needs to be matched with each other by workers to achieve a corresponding treatment effect.

Disclosure of Invention

Aiming at the defects of the prior art, the urban rail station operation scene arranging method and system based on the BPMN are provided, the method and the system are based on actual station service, two behaviors of construction and configuration are separated by adopting a 2-level operation method through analyzing the scene characteristics of flow, individuation and complexity, the utilization rate of a componentized scene is greatly improved, the scene dynamic variability is improved, the construction capability of the station scene can be effectively improved through a method of arranging the scene by components and a process engine, the toughness of the station scene is increased, and the working efficiency and the safety of the station are improved. The application specifically adopts the following technical scheme.

Firstly, in order to achieve the above purpose, a method for arranging urban rail station operation scenes based on BPMN is provided, which comprises the following steps: receiving the calling and setting of operators on various components, and arranging the components in a BPMN2.0 system to form a service scene in the station operation process; connecting corresponding components according to the selection and the setting of an operator, and arranging to form a scene flow; triggering a flow engine to perform flow simulation, and controlling each component in the service scene to execute corresponding task logic according to the scene flow; repeating the steps until the scene availability verification is passed, completing the modification and optimization of the scene flow, and finally generating and storing the corresponding task flow.

Optionally, the method for orchestrating urban rail station operation scenes based on BPMN according to any one of the preceding claims, wherein the components include: a device component, a persona component, a system component, a relationship component; each component is defined by setting its attributes, and each component defines tasks performed by the component by setting its events, respectively.

Optionally, the method for arranging urban rail station operation scenes based on BPMN according to any one of the above claims, wherein after arranging each component to form a service scene in the station operation process, xml/json description files are generated according to the scene flow formed by the operator.

Optionally, the method for orchestrating urban rail station operation scenes based on BPMN according to any one of the preceding claims, wherein the device assembly comprises: AFC equipment, elevator equipment, lighting equipment, broadcasting equipment, gate equipment, PIS equipment, CCTV equipment, roller shutter door equipment; the character assembly includes: decision makers, field performers and central controllers for making decisions, executing, monitoring or communicating respectively; the system components include: BAS system, security inspection system, maintenance system; the relation component is used for connecting components of different types, constructing a flow relation among the components, and comprises the following components: connection relation, judgment relation, opening relation and ending relation.

Optionally, the method for arranging urban rail station operation scenes based on the BPMN according to any one of the above claims, wherein the modification and optimization of the scene flow is automatically prompted by the BPMN2.0 system according to the attribute and implementation of each component in the component library.

Meanwhile, in order to achieve the above purpose, the present application further provides a system for arranging urban rail station operation scenes based on BPMN, which includes: the component library comprises different types of equipment components, system components, character components and relation components for an operator to call; the arranging drawing board is used for arranging and forming a service scene in the station operation process in the BPMN2.0 system according to the adjustment and the setting of various components by an operator; the flow simulator triggers the flow engine to perform flow simulation according to the selection and the setting of each component by an operator, controls each component in the service scene to execute corresponding task logic according to the scene flow, performs scene availability verification, and triggers prompt to modify and optimize the scene flow; and the flow library is used for publishing and storing task flow files of corresponding operation scenes completed by the flow simulator.

Optionally, the system for arranging urban rail station operation scenes based on BPMN according to any one of the above claims, further includes an API interface, which is connected with the actual physical equipment facility systems corresponding to each component, and the underlying internet of things platform centrally processes the corresponding actual physical equipment facility systems in the service scene according to the scene flow formed by arrangement, and triggers each actual physical equipment facility system to perform self-checking and configure the operation of each actual physical equipment facility system.

Optionally, the urban rail station operation scene arranging system based on the BPMN according to any one of the above claims, wherein the flow library further stores description files corresponding to the task flow files, and the description files are formed by arranging the description files according to the selection and the setting of the components by an operator, so as to describe scene flows required to be executed by the components.

Optionally, the BPMN-based urban rail station operation scene editing system according to any one of the above, wherein the step of adding attributes and events to any component is further performed after any component is invoked in the editing drawing board: the attributes of the device components include: device ID, device type, events for device components include: a switch of the equipment assembly and operation of the equipment assembly; the attributes of the persona component include: character type, character ID, task type performed by the character; events of the system components include: the running state of the system component and the opening and closing of the system component, and the attribute of the system component comprises the ID of the system component; the attributes of the relationship component include: connection relation, judgment relation, opening relation and ending relation.

Advantageous effects

Aiming at the problems of multiple operation scenes, strong field uncertainty, low personnel handling efficiency and the like of the current urban rail station, the application provides a method and a system for arranging the operation scenes of the urban rail station based on BPMN. The method comprises the steps of adopting a scene arrangement mode of component arrangement and a flow engine, calling various components in a component library in an arrangement drawing board to arrange the components to form a service scene in the station operation process, connecting the corresponding components according to the selection and the setting of an operator, arranging the components to form a scene flow, triggering the flow engine in a flow simulator to perform flow simulation, controlling each component in the service scene to execute corresponding task logic according to the scene flow, performing scene availability verification, prompting the modification and optimization of the scene flow, finally completing the task flow file of the corresponding operation scene, and releasing the task flow file to the flow library for the system to call and execute when required. The method can separate the construction from configuration by adopting a 2-level operation method by analyzing the scene characteristics of flow, individuation and complicacy based on the actual business of the station, thereby greatly improving the utilization rate of the componentized scene and improving the scene dynamic variability. The method for arranging the scenes by the components and the process engines effectively improves the construction capability of the station scenes, increases the toughness of the station scenes and improves the working efficiency and the safety of the station.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and explain the application and do not limit it. In the drawings:

FIG. 1 is a flow chart of the overall steps of a BPMN-based urban rail station operating scene orchestration method employed in the present application;

fig. 2 is a schematic diagram of a station operation business flow in a normal scenario;

FIG. 3 is a schematic diagram of a classification of station operations organization in an unusual scenario;

FIG. 4 is a flowchart of the steps of the station departure scenario in the present application;

FIG. 5 is a schematic diagram of a component addition manner in an embodiment of the present application;

fig. 6 is a step diagram of a scene orchestration procedure employed in an embodiment of the present application.

Detailed Description

In order to make the objects and technical solutions of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without the benefit of the present disclosure, are intended to be within the scope of the present application based on the described embodiments.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, "connected" means either a direct connection between elements or an indirect connection between elements via other elements.

Fig. 1 is a schematic diagram of a BPMN-based urban rail station operation scene orchestration system according to the present application. The BPMN system (Business Process Modeling Notation) realizes flow modeling through the business flow modeling symbol and is used for drawing a business flow chart. It comprises the following steps:

the component library is convenient to apply for users, comprises different types of equipment components, system components, character components and relation components, can classify various types of components into different component libraries according to user requirements or a certain principle, and is convenient for the users to quickly find and use and is called by operators; the components are used for setting up the basis of scene flow, and the required flow can be arbitrarily arranged through the components. Types of components include device components, system components, algorithm components, persona components, relationship components, etc.;

the drawing board is arranged, various components in the module are arranged in the BPMN2.0 system in a 'dragging' mode according to the calling and setting of operators on various components, the business scene in the station operation process is formed by logically arranging the components according to the flow, and a descriptive file is generated aiming at the arranged flow. The module has the functions of system management and task flow arrangement, so that a user can conveniently adopt a personalized mode to quickly realize flow compiling as required;

the flow simulator triggers the flow engine to perform flow simulation according to the selection and the setting of each component by an operator, controls each component in the service scene to execute corresponding task logic according to the scene flow, performs scene availability verification, and triggers prompt to modify and optimize the scene flow;

the process library, which can also be called a scene library, is composed of task processes in various states and is used for publishing and storing task process files of corresponding operation scenes completed by the process simulator.

Firstly, according to the calling and setting of operators on various components, arranging the components in an arranging drawing board constructed by a BPMN2.0 system to form a service scene in the station operation process;

then, according to the selection and the setting of an operator, corresponding components are connected, and a scene flow is formed by arrangement;

after the arrangement is completed, a flow engine is triggered in a flow simulator to perform flow simulation, each component in the business scene is controlled to execute corresponding task logic according to the scene flow, a BPMN2.0 system automatically prompts the scene flow to modify and optimize according to the attribute and the realization of each component in a component library, an operator repeats the steps until the scene flow is confirmed by the scene availability after adjusting the arrangement according to the prompt, the scene flow is modified and optimized, and finally, the corresponding task flow is generated, released and stored in a flow library.

Thus, the present application can realize:

1. freely organizing scenes; because the station belongs to a service place and the personnel flow amount is large, the related systems and equipment facilities are more, so that the operation scene of the station is more and more complicated, and the traditional scene is often lack of suitability due to strong uncertainty of the scene, so that customization cannot be realized; the free composition of scenes is realized through the component library, the customization of various scenes is increased, and the scene library is expanded;

2. fast construction of a scene; the station is a place for providing passengers with a bus, and the interaction degree with people is deeper, so that the sudden of events is more in daily operation of the station, and the rapid disposal of scenes is a great difficulty in improving the safety of the station and reducing the operation risk; this patent is through constructing a series of sub-scene subassemblies, can construct the scene that has pertinence fast, has promoted the efficiency that station scene was dealt with, has improved station operation scene toughness.

The specific operation mode of the system is described below in an exemplary manner in a specific scenario in station operation.

In this embodiment, the system abstracts various scenes involved in daily operation of the station based on a componentized programming manner, constructs in a componentized manner, maps abstract components in the station operation scene based on BPMN, and further realizes scene arrangement. The core of the system for simulating various operation scenes of the station is as follows: abstract station operation scene components, configuration of the components and arrangement of the scenes.

The related logic of the system is expressed based on various types of components through the mapping of tasks in the task flow reality. The task flow may include a number of sub-flows. The sub-process belongs to the category of task processes, is a process with small-range associated logic and has general meaning in the task processes, is usually arranged to be used as a sub-process component in order to improve arrangement efficiency, and after a plurality of times of arrangement, a complete task process can be arranged and completed by only a plurality of sub-process components. The task flow executing process may be represented by a task instance, which is a specific scenario instance, where each task instance uniquely corresponds to a task flow, and a task flow may have multiple task instances.

The BPMN based on the system is an abstract and workflow-simplifying method, and can be used for capturing, designing, executing, recording, monitoring and controlling automatic and non-automatic processes so as to fulfill the aim of high-efficiency treatment of the business. There are currently two versions of BPMN, BPMN1.0 and BPMN2.0, respectively, and in this embodiment work is mainly performed based on BPMN 2.0. In this embodiment, three basic elements of a flow object, data and connection object based on BPMN2.0 are required to be arranged, and the definition and related attributes thereof are as follows:

stream object: the main graphic elements defining the business process include three types: events, activities and gateways, wherein the events refer to things occurring in the running process of a business process; the activities include tasks and sub-flows; the gateway is used for representing branches and merging of the flow;

data: namely, the method comprises four elements of data object, data input, data output and data storage;

connection object: the manner in which stream objects are represented as being interconnected to each other or to other information can be broadly divided into three types: sequential flow, information flow, association, defined as: the method comprises the steps of formulating the execution sequence of the activities, describing the information flow sent and received between two independent business entities, and associating information such as related data text with flow objects for displaying the input and output of the activities.

Referring to fig. 2 and 3, the operation scenarios of the rail transit station can be divided into two categories: normal operation scenes and abnormal operation scenes.

The normal operation scene can be divided into start station, operation, inspection, maintenance, stop closing, night construction and the like in sequence according to the operation time of the station as shown in fig. 2. The operation can be divided into peak operation and flat operation according to the line characteristics; the maintenance scene is that operation and maintenance personnel overhaul station equipment reporting and maintenance facilities according to an operation and maintenance plan, and station operators mainly bear the report and maintenance acceptance of equipment and facility faults; the night construction scene mainly comprises the acceptance of operators to construction projects. As known from the carding of the daily operation scene, the current scene occupying the larger work task of the operator comprises: switching stations and inspection, wherein the switching stations require about 30 minutes per day, and the overall process is fixed, and the types and sequences of equipment and facilities are fixed although the equipment and facilities are numerous to open; similarly, the inspection scene mainly consists in the inspection of the length of a flight and the running state of the overall equipment and facilities of the station by a comprehensive controller, the station needs to carry out inspection once every certain time, and the path and the equipment and facilities of each inspection are defined in advance although the path and the facilities of each inspection are lengthy and complex, thus the inspection system belongs to a static service flow.

The abnormal scene may be classified into the following 4 cases shown in fig. 3 based on the influence of the abnormal situation on the station: the operation is not influenced, the regional operation is influenced, the operation is limited, and the evacuation is not carried out. The organization schemes performed by stations required by different scenes are different, and although equipment and facilities, systems and personnel involved in the stations are complex, the business process with universality shown in fig. 3 can be abstracted from the complex scene processes.

Through the carding of the station operation organization scene and the learning of the BPMN knowledge, the assembly arrangement of the station operation scene based on the BPMN method can be obtained, so that the method is feasible and the operation efficiency of the station can be improved.

When the arrangement of various components is specifically executed, in this embodiment, based on the above-mentioned arrangement of components, the components of different types can be assembled into a service scene through service logic in a dragging manner, and the arranged scene is converted into an xml/json file for analysis and use by a subsequent module. Specifically, in this embodiment, the component arrangement core mainly includes the following parts:

component library: the basic group library formed by various components is mainly used for arranging various scenes and the types of the components in the component library;

arranging a drawing board: a work area for scene arrangement;

and (3) flow simulation: after the scene flow is arranged, the logic relation and the usability of the task flow are simulated, error information can be given out in a flow simulation part, and an xml/json format scene flow description file can be generated after simulation test is passed and used for describing each task flow;

a flow library: a database storing reasonable flows and description files thereof;

here, it is to be explained that: when the sub-process reenters a new task process, the description file thereof is generated in the task process again, namely, the description file and the task process have time sequence, and when a new task process, namely, a scene is started, the description file of the sub-process component thereof is released or emptied.

The most core part in the assembly arrangement module belongs to an assembly library, and the assembly library is obtained based on the summary of daily operation scenes of urban rail stations, has universality and can meet the construction of operation scenes of station foundations. The component types include: a relationship component, a device component, a persona component, an algorithm component, a system component, defined separately as follows.

A relationship component: the method is used for connecting different types of components and constructing flow relationships among the components;

and (3) equipment assembly: the equipment related to station operation has a corresponding relation with a platform object model of the bottom layer connected physical equipment, and the patent does not relate to the object model of the internet of things platform, and only the corresponding relation is described;

character component: station operation management personnel can be divided into three types, namely: the decision maker, the site executor and the central controller have different tasks executed by different types of people, different roles and roles in the process, and the cooperation of the three types of people is needed in most scenes, so that people are needed to be divided during arrangement;

system components: because of the excessive number of station equipment facilities, each device cannot be finely controlled in daily operation, and therefore the system needs to be in butt joint with a system, and a system component mainly comprises a monitoring system and an algorithm system of a certain type of station equipment facility, such as a FAS fire alarm system and a passenger flow sensing algorithm system.

Each component adds an attribute and an event when being created, the attribute is a definition of the component, the event is a task definition of the component, the relation component is set based on the inherent relation condition of the BPMN platform, the attribute of the component is consistent with the relation component of the BPMN, the attribute and the event can be continuously expanded, and the patent only considers the following main attributes and events:

and (3) equipment assembly: device ID (attribute), device type (attribute), switch (event), run (event);

character component: person type, person ID, task type (decision, execution, monitoring, communication);

system components: the running state of the system (the configuration attribute of the system, different system configurations), the opening and closing of the system and the system ID.

In this embodiment, taking station departure scene arrangement based on BPMN as an example, the component arrangement includes the following steps:

selecting task flow arrangement;

selecting a corresponding component from a component library according to requirements;

binding the component with the physical device;

setting a component event;

selecting proper components and connecting the components according to actual scenes;

after the scene compiling is completed, the usability of the scene can be verified through flow simulation, and modification and optimization are carried out according to simulation prompts;

after compiling, the scene is completed, and the state of the scene can be changed into 'released' after the successful click release, for example, the state of the scene is changed into 'to be released' after the temporary storage is clicked or the state of the scene is automatically saved, and the scene is saved.

In specific implementation, it is necessary to:

step 1: and (5) a station opening task flow of the carding station. Including as shown in fig. 4: the method comprises the steps of 1-starting station opening setting, 2-starting a device self-checking mode, 3-performing manual inspection, 4-judging the starting process based on inspection results, 5-starting operation of equipment facilities, 6-monitoring the operation state of equipment, 7-judging the operation condition of the equipment facilities in a station, 8-opening a shutter door and 9-finishing station opening;

the equipment self-checking is mainly performed by an equipment system opening test, a manual inspection is mainly performed by a station operator to check whether faults or anomalies exist on the surface of each equipment facility, the starting of the equipment facilities is mainly performed based on various equipment systems integrated in a comprehensive control room of the station, when the equipment facilities are completely opened and run for 5 minutes without faults or anomalies, rolling doors at all entrances and exits of the station and at a transfer channel are opened, related personnel are in place, the rolling doors are opened, and the station opening process is completed, so that the operation of the station can be started.

In the whole station opening process, the most time and effort are consumed for opening the roller shutter door, and because different entrances and exits are located in different directions and are far away, 4 or more entrances and exits of the station are needed under most conditions, at least 4 persons are needed for opening the roller shutter door; secondly, the manual inspection process is a second time-consuming task, and a station operator is required to check all from the station equipment to the station hall equipment, continuously observe the running state of equipment facilities after the equipment is started, replace manual inspection by adopting a CCTV inspection mode in the patent, and reduce the workload of the CCTV inspection mode.

When the corresponding components are selected from the component library according to the requirements, the arrangement of the start task flow can be known from the start task flow and is mainly divided into two parts: and starting the equipment to run and patrol personnel. The components mainly involved in the two modules are a device component, a relation component and a system component, wherein the device component comprises: AFC equipment, elevator equipment, lighting equipment, broadcasting equipment, gate equipment, PIS equipment, CCTV equipment, roller shutter door equipment; the system components include: BAS system, security inspection system, maintenance system; the relationship component includes: connection relation, judgment relation, opening relation and ending relation.

Component arrangement of the start-up scenario can then take place based on the combing of the task flows and the description of the components involved.

Step 2: arranging a start-up flow component;

the process based on the component orchestration may divide the outbound process scene orchestration into the following steps:

1) Firstly, selecting an arranging drawing board, and entering an arranging page;

2) Selecting an AFC device, an elevator device, a lighting device, a broadcasting device, a gate device, a PIS device, a CCTV device, and a rolling shutter door device component from a device component library; selecting BAS system, security inspection system and maintenance system components from a system component library; selecting a connection relation, a judgment relation, a starting relation and an ending relation component from a relation component library; are arranged in sequence as shown in figure 5;

3) Aiming at the attribute of the component, the component is connected with an actual physical equipment facility system in various connection modes, the API is connected in an API mode, the API is intensively treated by a bottom layer internet of things platform, and the API with a uniform format is provided through the convention of arranging scenes, so that the connection with the actual equipment facility and the system can be realized;

4) After the component is connected with the real equipment, based on the station start-up flow, the equipment needs to be self-checked firstly, namely, the equipment is started up for checking (judging whether equipment facilities and the like can be normally started up), and the event is defined; the flow is known, and the follow-up process also involves the configuration of the operation of the equipment facility, so that in the step, an equipment system component can be duplicated and the operation event of the equipment system component can be configured at the same time;

5) Based on the task flow 3, manual inspection is needed at this time, and in the patent, the CCTV starts the inspection of equipment and facilities, so that the viewing object of the CCTV needs to be set at this step, namely, the running object of the CCTV is set;

6) Outputting the CCTV inspection result to a judging relation component, wherein the step is to set a condition corresponding to the CCTV inspection result category in the judging relation component; if the maintenance system is qualified, the next step is carried out, and if the maintenance system is not qualified, the maintenance system is output;

7) After the CCTV inspection is qualified, starting to operate equipment, wherein the equipment is configured in the step 4 and is directly applied to the equipment;

8) Step 6, the equipment facilities are tourd again;

9) After inspection is qualified, the device is connected to a roller shutter door assembly, and the roller shutter door is opened;

10 Connecting the start and end components into the flow completes the overall scene layout as shown in fig. 6.

Step 3: and (5) task flow simulation. And verifying the scene availability through flow simulation, namely, the scene flow has no problem logically.

Step 4: task flow release-generating a start scene file;

in summary, the application provides a scene arrangement method based on component arrangement and flow engine aiming at the problems of multiple operation scenes, strong field uncertainty, low personnel handling efficiency and the like of the current urban rail station. The assembly arrangement mainly realizes the assembly construction of scenes, and the construction of station operation scenes is completed by mapping station systems, personnel, equipment facilities and the like into assemblies and adopting a graphical dragging mode to form scene flow files. The scene arrangement scheme provided by the invention is based on the actual business of the station, and the two behaviors of construction and configuration are separated by adopting a 2-level operation method by analyzing the scene characteristics of flow, individuation and complexity, so that the utilization rate of the componentized scene is greatly improved, and the scene dynamic variability is improved. The method for arranging the scenes by the components and the process engines effectively improves the construction capability of the station scenes, increases the toughness of the station scenes and improves the working efficiency and the safety of the station. .

The foregoing is merely exemplary of embodiments of the present application and is thus not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application.

Claims (9)

1. A urban rail station operation scene arrangement method based on BPMN is characterized by comprising the following steps:

receiving the calling and setting of operators on various components, and arranging the components in a BPMN2.0 system to form a service scene in the station operation process;

connecting corresponding components according to the selection and the setting of an operator, and arranging to form a scene flow;

triggering a flow engine to perform flow simulation, and controlling each component in the service scene to execute corresponding task logic according to the scene flow;

repeating the steps until the scene availability verification is passed, completing the modification and optimization of the scene flow, and finally generating and storing the corresponding task flow.

2. The BPMN-based urban rail station operating scene orchestration method according to claim 1, wherein the components include: a device component, a persona component, a system component, a relationship component;

each component is defined by setting its properties,

each component defines the tasks that the component performs by setting its events, respectively.

3. The method for arranging urban rail station operation scenes based on BPMN according to claim 2, wherein after arranging each component to form a service scene in the station operation process, xml/json description files are also generated according to the scene flow arranged and formed by an operator.

4. The urban rail station operating scene orchestration method based on BPMN according to claim 2, wherein,

wherein the device assembly comprises: AFC equipment, elevator equipment, lighting equipment, broadcasting equipment, gate equipment, PIS equipment, CCTV equipment, roller shutter door equipment;

the character assembly includes: decision makers, field performers and central controllers for making decisions, executing, monitoring or communicating respectively;

the system components include: BAS system, security inspection system, maintenance system;

the relation component is used for connecting components of different types, constructing a flow relation among the components, and comprises the following components: connection relation, judgment relation, opening relation and ending relation.

5. The BPMN-based urban rail station operation scene orchestration method according to claim 2, wherein the modification optimization of the scene flow is automatically prompted by the BPMN2.0 system according to the properties and implementation of each component in the component library.

6. A BPMN-based urban rail station operation scene orchestration system, comprising:

the component library comprises different types of equipment components, system components, character components and relation components for an operator to call;

the arranging drawing board is used for arranging and forming a service scene in the station operation process in the BPMN2.0 system according to the adjustment and the setting of various components by an operator;

the flow simulator triggers the flow engine to perform flow simulation according to the selection and the setting of each component by an operator, controls each component in the service scene to execute corresponding task logic according to the scene flow, performs scene availability verification, and triggers prompt to modify and optimize the scene flow;

and the flow library is used for publishing and storing task flow files of corresponding operation scenes completed by the flow simulator.

7. The system for orchestrating urban rail station operation scenes based on BPMN according to claim 6, further comprising an API interface connected to the actual physical equipment facility systems corresponding to the components, wherein the underlying internet of things platform centrally processes the corresponding actual physical equipment facility systems in the business scene according to the orchestrated scene flow, triggers each actual physical equipment facility system to perform self-checking, and configures the operation of each actual physical equipment facility system.

8. The BPMN-based urban rail station operation scene orchestration system according to claim 7, wherein the flow library further stores description files corresponding to the task flow files, the description files are formed by corresponding orchestration according to the selection and setting of each component by an operator, and are used for describing scene flows required to be executed by each component.

9. The BPMN-based urban rail station operating scene orchestration system according to claim 7, wherein the step of adding attributes and events to any component is performed after invoking that component in the orchestration drawing panel:

the attributes of the device components include: device ID, device type, events for device components include: a switch of the equipment assembly and operation of the equipment assembly;

the attributes of the persona component include: character type, character ID, task type performed by the character;

events of the system components include: the running state of the system component and the opening and closing of the system component, and the attribute of the system component comprises the ID of the system component;

the attributes of the relationship component include: connection relation, judgment relation, opening relation and ending relation.

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