WO2023044929A1 - Procédé et système pour fournir un service associé à un système d'informations - Google Patents

Procédé et système pour fournir un service associé à un système d'informations Download PDF

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Publication number
WO2023044929A1
WO2023044929A1 PCT/CN2021/121098 CN2021121098W WO2023044929A1 WO 2023044929 A1 WO2023044929 A1 WO 2023044929A1 CN 2021121098 W CN2021121098 W CN 2021121098W WO 2023044929 A1 WO2023044929 A1 WO 2023044929A1
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WIPO (PCT)
Prior art keywords
service
message
control device
host device
feedback
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PCT/CN2021/121098
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English (en)
Chinese (zh)
Inventor
杨晓波
李冬
康尧磊
张传雨
熊磊
Original Assignee
西门子股份公司
西门子（中国）有限公司
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Application filed by 西门子股份公司, 西门子（中国）有限公司 filed Critical 西门子股份公司
Priority to PCT/CN2021/121098 priority Critical patent/WO2023044929A1/fr
Priority to CN202180102173.2A priority patent/CN117980835A/zh
Publication of WO2023044929A1 publication Critical patent/WO2023044929A1/fr

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form

Definitions

  • the present invention relates to the field of industrial control, and more particularly, to methods and systems for providing information systems, control devices, host devices, computing devices, computer readable storage media and computer program products.
  • IT Information Technology
  • OT Operation Technology
  • the control device In the existing technology, in order to obtain IT services, the control device needs an additional physical gateway or the control system and the host system need to be deployed on the same device hardware and support the shared memory method. However, this requires additional physical devices to increase the cost or is not applicable than traditional control equipment. In view of this, the present invention proposes a solution for providing services associated with information systems.
  • a first embodiment of the present disclosure proposes a method for providing a service associated with an information system, the method including:
  • control device sending a first message indicating the first request to a host device via a fieldbus, wherein both the control device and the host device are connected to the fieldbus;
  • the industrial process is executed based on the call feedback.
  • a second embodiment of the present disclosure proposes a method for providing a service associated with an information system, the method including:
  • a first message is received from a control device over a fieldbus indicating a first request for a service associated with an information system external to the control device, wherein the host device and The control devices are all connected to the field bus;
  • a second message indicating the call feedback is sent to the control device via the fieldbus.
  • a third embodiment of the present disclosure proposes a control device, which includes:
  • a requesting unit configured to initiate a first request for a service associated with an information system external to the control device during execution of an industrial process by the control device;
  • a sending unit configured to send a first message indicating the first request to a host device via a field bus, wherein both the control device and the host device are connected to the field bus;
  • a receiving unit configured to receive a second message indicating an invocation feedback for the service from the host device through the field bus to acquire the invocation feedback
  • An execution unit configured to execute the industrial process based on the call feedback.
  • a fourth embodiment of the present disclosure proposes a host device, which includes:
  • a receiving unit configured to receive a first message from a control device via a fieldbus indicating a first request for a service associated with an information system external to the control device, wherein the host device and said control device are both connected to said fieldbus;
  • an invoking unit configured to invoke the service in response to the first request, so as to obtain an invocation feedback for the service
  • a sending unit configured to send a second message indicating the call feedback to the control device through the field bus.
  • a fifth embodiment of the present disclosure proposes a system for providing services associated with an external information system, the system including:
  • PLC control equipment and host equipment are respectively connected to the field bus;
  • control device initiating a first request for a service associated with an information system external to said control device during execution of an industrial process
  • the industrial process is executed based on the call feedback.
  • a sixth embodiment of the present disclosure proposes a computing device, which includes:
  • the memory is used to store computer-executable instructions, which, when executed, cause the processor to execute the method according to the aforementioned first or second embodiment.
  • a seventh embodiment of the present disclosure proposes a computer-readable storage medium having stored thereon computer-executable instructions for performing the above-mentioned first or second The method described in the examples.
  • An eighth embodiment of the present disclosure proposes a computer program product that is tangibly stored on a computer-readable storage medium and includes computer-executable instructions that, when executed, cause at least A processor executes the method according to the aforementioned first or second embodiment.
  • the present invention connects the control device and the host device by using the field bus to obtain external IT services from the host device, the control device does not need to care whether it is directly connected to the service providing device, and can dynamically add or Remove services without changing the layout of the fieldbus network.
  • this solution eliminates the need to purchase additional physical equipment to connect to external information systems or upgrade legacy control equipment, and only needs to provide any required IT services to the control equipment through the host equipment, thereby reducing costs and improving Provide IT services flexibly.
  • FIG. 1 illustrates an exemplary system for providing services associated with an information system according to an embodiment of the present disclosure.
  • FIG. 2 shows a flowchart of an exemplary method for providing services associated with an information system, according to an embodiment of the present disclosure.
  • FIG. 3 shows a flowchart of another exemplary method for providing services associated with an information system according to an embodiment of the present disclosure.
  • Fig. 4 illustrates an exemplary control device according to an embodiment of the present disclosure.
  • Figure 5 illustrates an exemplary host device according to an embodiment of the present disclosure.
  • FIG. 6 illustrates an exemplary information flow for providing services associated with an information system, according to an embodiment of the present disclosure.
  • FIG. 7 shows a block diagram of an exemplary computing device according to an embodiment of the disclosure.
  • a service refers to a function provided by a software program or application running in an information system.
  • the present invention provides a solution for providing services associated with an information system through a fieldbus to solve the above-mentioned defects in the prior art.
  • FIG. 1 illustrates an exemplary system 100 for providing services associated with an information system, according to an embodiment of the present disclosure.
  • the system 100 includes a control device 110 and a host device 120 , which are respectively connected to a field bus 130 .
  • the control device 110 may be used to execute an industrial process and may need to access services associated with external information systems during the execution of the industrial process.
  • Control device 110 may send a request for service to host device 120 via fieldbus 130 .
  • the host device 120 can act as a proxy device for the service, and dispatch the corresponding service in response to the received request, and send the call feedback to the control device 110 through the field bus 130, so that the control device 110 can perform industrial operations according to the returned call feedback. process.
  • the invoked service may be provided directly by host device 120, and thus, host device 120 may invoke the service locally to obtain invocation feedback.
  • the invoked service cannot be directly provided by the host device 120, then the host device 120 can seek to provide services to other devices, such as shown in FIG. (e.g., via wired, wireless, and/or combined communication links) a plurality of server devices—a first server 140, a second server 150, a third server 160 (for illustration only, not limitation), and to These server devices request calling services to obtain calling feedback, and send the calling feedback to the control device 110 through the field bus 130, so that the control device 110 can execute the industrial process according to the returned calling feedback.
  • the communication link between the host device 120 and other service providing devices 140 , 150 and 160 is different from a field bus, and standard IT services can be provided through common TCP/IP or UDP on this communication link.
  • control devices, host devices, and servers in FIG. 1 is only for illustration, and there may be more control devices, more host devices, or more or fewer servers.
  • one or more control devices may obtain external services through one or more fieldbuses via one or more host devices, and the services may be provided by one or more host devices or other servers.
  • industrial fieldbus is usually not designed for IT service communication, and its communication protocol stack is incomplete or even modified, making fieldbus often unable to provide standard IT services through common TCP/IP or UDP methods, but through The field bus sends a service request to the host device, and the host device returns a call feedback about the service, so that the control device can easily obtain standard IT services.
  • control device 110 and the host device 120 in the system 100 will be further described in detail below with reference to FIGS. 2-6 .
  • FIG. 2 shows a flowchart of an exemplary method 200 for providing services associated with an information system, according to an embodiment of the present disclosure.
  • the method 200 can be implemented, for example, by the control device 110 of FIG. 1 .
  • step 201 at the control device 110 , a first request for a service associated with an information system external to the control device 110 is initiated during execution of an industrial process.
  • the control device 110 is limited by its own processing capability, and may need to call external services (for example, services of big data applications provided by a big data server, services of query applications provided by a database device, etc.) during the execution of an industrial process,
  • the control device 110 may initiate a first request for an external service.
  • step 202 at the control device 110 , a first message indicating a first request is sent to the host device 120 via the fieldbus 130 .
  • the control device 110 may have a communication interface that can directly transmit data on the fieldbus 130, or the control device 110 may be configured with a fieldbus driver or a bus adapter to transmit data on the fieldbus 130 through the communication interface.
  • step 203 at the control device 110, a second message indicating an invocation feedback for the service is received from the host device 120 through the fieldbus 130 to obtain the invocation feedback.
  • host device 120 can be equipped with a communication interface that can transmit data directly on fieldbus 130 in order to exchange data with control device 110 .
  • step 204 the industrial process is executed based on the call feedback.
  • the present invention obtains external IT services from the host device by using the field bus to connect the control device and the host device, so that the control device does not need to care whether it is directly connected to the service providing device, and can dynamically add or remove services Without changing the layout of the fieldbus network.
  • this solution eliminates the need to purchase additional physical equipment to connect to external information systems or upgrade legacy control equipment, and only needs to provide any required IT services to the control equipment through the host equipment, thereby reducing costs and improving Provide IT services flexibly.
  • the first request may include a service name and parameters for the service.
  • the service name is used to identify the requested service, and the parameters are, for example, entry parameters required by the service.
  • step 202 may include: encoding the first request in a first message, wherein the first message follows the data format of the communication protocol of the field bus 130; and sending the second request according to the communication protocol of the field bus 130 a message.
  • the control device 601 may serialize the service name and parameters to generate or encode a byte group, and encapsulate the coded byte group in the first message according to the data format of the fieldbus communication protocol.
  • the control device 601 and the host device 602 may also negotiate the rules of data transmission (for example, byte order, etc.) in advance, and use the rules for configuration.
  • the invocation feedback may include the service name of the service and the invocation result.
  • the service name is used to identify the requested service, and the result of the call is, for example, the data required for further execution of the industrial process.
  • step 203 may include: receiving the second message according to the communication protocol of the fieldbus 130, wherein the second message complies with the data format of the communication protocol of the fieldbus 130; and decoding the second message to obtain call feedback.
  • the control device 110 may receive the second message according to the communication protocol of the field bus, extract the byte group corresponding to the call feedback from the second message, and decode the byte group by, for example, deserializing the byte group. Service name and call result.
  • control device 110 may include a PLC control device, or other control devices with limited functions, such as various traditional programmable control devices. This enables easy access to external IT services even for control devices with limited functionality.
  • the fieldbus may include at least one of the following types: EtherCAT, PROFIBUS, PROFINET, Foundation Fieldbus, or Modbus. These types of fieldbuses can be various high-speed fieldbuses to meet the real-time requirements required by industrial processes.
  • FIG. 3 shows a flowchart of another exemplary method 300 for providing services associated with an information system according to an embodiment of the present disclosure.
  • Method 300 may be implemented, for example, by host device 120 of FIG. 1 .
  • step 301 at the host device 120 a first message is received from the control device 110 via the fieldbus 130 indicating a first request for a service associated with an information system external to the control device 110 .
  • step 302 the host device 120 invokes the service in response to the first request to obtain invocation feedback for the service.
  • step 303 at the host device 120, a second message indicating to invoke feedback is sent to the control device 110 through the field bus 130.
  • the present invention obtains external IT services from the host device by using the field bus to connect the control device and the host device, so that the control device does not need to care whether it is directly connected to the service providing device, and can dynamically add or remove services Without changing the layout of the fieldbus network.
  • this solution eliminates the need to purchase additional physical equipment to connect to external information systems or upgrade legacy control equipment, and only needs to provide any required IT services to the control equipment through the host equipment, thereby reducing costs and improving Provide IT services flexibly.
  • the first request includes a service name and parameters for the service.
  • the service name is used to identify the requested service, and the parameters are, for example, entry parameters required by the service.
  • step 301 may include: receiving the first message according to the communication protocol of the fieldbus 130, wherein the first message follows the data format of the communication protocol of the fieldbus 130; and decoding the first message to obtain the first request.
  • the host device 120 may receive the first message according to the communication protocol of the field bus, and extract the byte group corresponding to the first request from the first message, and decode the byte group by, for example, deserializing the byte group Make the first request.
  • step 302 may include: determining whether the host device 120 can directly provide the service; if the host device 120 can directly provide the service, calling the service locally at the host device 120 to obtain a call feedback, or if the host device 120 can directly provide the service If the device 120 fails to provide the service directly, the host device 120 requests the service providing device capable of providing the service to call the service, so as to obtain the call feedback. For example, host device 120 may determine whether it can directly provide the service based on, for example, the service name, and if the service cannot be provided directly, host device 120 may determine from the service name (and optionally, routing information) the service it is connected to.
  • the service providing device (for example, server 140-160) that can provide the service, and request invoking service to the service providing device, for example, can request invoking service through HTTP, TCP/IP, UDP, RPC or other various possible ways to get call feedback.
  • the invocation feedback may include the service name of the service and the invocation result.
  • the service name is used to identify the requested service, and the result of the call is, for example, the data required for further execution of the industrial process.
  • step 303 may include: encoding the call feedback into a second message, wherein the second message follows the data format of the communication protocol of the fieldbus 130; sending the second message according to the communication protocol of the fieldbus 130 .
  • the host device 120 may perform serialization on the service name and the call result to generate or encode a byte group, and encapsulate the coded byte group in the second message according to the data format of the fieldbus communication protocol.
  • the fieldbus may include at least one of the following types: EtherCAT, PROFIBUS, PROFINET, Foundation Fieldbus, or Modbus. These types of fieldbuses can be various high-speed fieldbuses to meet the real-time requirements required by industrial processes.
  • FIG. 4 illustrates an exemplary control device 300 according to an embodiment of the present disclosure.
  • the control device 300 includes a request unit 401 , a sending unit 402 , a receiving unit 403 and an execution unit 404 .
  • the request unit 401 is configured to initiate a first request for a service associated with an information system external to the control device during execution of the industrial process.
  • the sending unit 402 is configured to send the first message indicating the first request to the host device through the field bus, wherein both the control device and the host device are connected to the field bus.
  • the receiving unit 403 is configured to receive the second message indicating the call feedback for the service from the host device through the field bus to obtain the call feedback.
  • the execution unit 404 is configured to execute the industrial process based on the call feedback.
  • the first request includes a service name and parameters for the service.
  • the sending unit 402 may be configured to: encode the first request in the first message, wherein the first message follows the data format of the fieldbus communication protocol; and send the first request according to the fieldbus communication protocol. information.
  • the invocation feedback includes a service name of the service and an invocation result.
  • the receiving unit 403 may be configured to: receive the second message according to the communication protocol of the field bus, wherein the second message complies with the data format of the communication protocol of the field bus; and decode the second message to obtain the calling feedback.
  • control device 300 may include a PLC control device, or other control devices with limited functions, such as various traditional programmable control devices.
  • the fieldbus may include at least one of the following types: EtherCAT, PROFIBUS, PROFINET, Foundation Fieldbus, or Modbus.
  • FIG. 5 illustrates an exemplary host device 500 according to an embodiment of the disclosure.
  • the host device 500 includes a receiving unit 501 , a calling unit 502 and a sending unit 503 .
  • the receiving unit 501 is configured to receive a first message indicating a first request from the control device through the field bus, the first request is for a service associated with an information system outside the control device, wherein both the host device and the control device are connected to Fieldbus.
  • the calling unit 502 is configured to call a service in response to the first request, so as to obtain a call feedback for the service.
  • the sending unit 503 is configured to send the second message indicating invoking feedback to the control device through the field bus.
  • the first request includes a service name and parameters for the service.
  • the receiving unit 501 may be configured to: receive the first message according to the communication protocol of the field bus, wherein the first message follows the data format of the communication protocol of the field bus; and decode the first message to obtain the first request .
  • the calling unit 502 may be configured to: determine whether the host device can directly provide the service; if the host device can directly provide the service, call the service locally at the host device to obtain the call feedback, or if the host device If the service cannot be directly provided, the host device requests the service providing device capable of providing the service to call the service, so as to obtain the call feedback.
  • the invocation feedback may include service name and invocation result.
  • the sending unit 503 may be configured to: encode the call feedback into the second message, wherein the second message follows the data format of the fieldbus communication protocol; and send the second message according to the fieldbus communication protocol .
  • the fieldbus may include at least one of the following types: EtherCAT, PROFIBUS, PROFINET, Foundation Fieldbus, or Modbus.
  • FIG. 6 shows an exemplary information flow 600 for providing services associated with an information system according to an embodiment of the present disclosure.
  • the information flow 600 depicts an information exchange process.
  • the control device 601 may be the control device 110 of FIG. 1 or the control device 400 of FIG. 4
  • the host device 602 may be the host device 120 of FIG. 1 or the host device 500 of FIG. devices, such as host device 602, any one of server devices 140-160 in FIG. 1 .
  • control device 601 executes an industrial process in an industrial or process control system, it needs to request an external IT service, so it initiates (610) a first request about the external service, and the first request may include a service name and parameters.
  • control device 601 sends (620) a first message to the host device 602 via the fieldbus, wherein the first request is encoded in the first message.
  • the control device 601 may serialize the service name and parameters to generate or encode a byte group, and encapsulate the coded byte group in the first message according to the data format of the communication protocol of the field bus, and follow the The communication protocol of the field bus sends the first message.
  • the host device 602 receives (630) the first message over the Fieldbus.
  • the host device 602 may receive the first message according to the communication protocol of the field bus, and extract the byte group corresponding to the first request from the first message, and decode the byte group by, for example, deserializing the byte group Make the first request.
  • host device 602 in response to the first request, invokes (640) the service for which the first request is directed.
  • the host device 602 when the host device 602 can determine that it can directly provide the service according to the service name, for example, the service providing device 603 is the host device 602, which processes (650) the service request and returns (660) the call feedback, wherein , the call feedback can include the service name and call result.
  • the host device 602 can determine that it cannot directly provide the service according to the service name, for example, the service providing device 603 is different from the host device 602, and the host device 602 can use the service name (and optionally , routing information) to determine the service providing device 603 that it is connected to that can provide services, and request the service providing device 603 to call (640) the service, for example, through HTTP, TCP/IP, RPC or other possible way to request a service call.
  • the service providing device 603 processes (650) the service request, and returns (660) an invocation feedback to the host device 602, wherein the invocation feedback may include a service name and an invocation result.
  • the host device 602 sends (670) a second message to the control device 601 via the fieldbus, wherein the call feedback is encoded in the second message.
  • the host device 602 may serialize the service name and the call result to generate or encode a byte group, and encapsulate the coded byte group in the second message according to the data format of the fieldbus communication protocol, and The second message is sent according to the communication protocol of the field bus.
  • control device 601 receives (680) a second message via the fieldbus.
  • the control device 601 may receive the second message according to the communication protocol of the field bus, and extract the byte group corresponding to the call feedback from the second message, and decode the byte group by, for example, deserializing the byte group Call for feedback.
  • the control device 601 executes an industrial process having multiple stages, where each stage corresponds to a respective set of process parameters.
  • the control device 601 can obtain the process parameter set of each stage in multiple time periods, and send the process parameter set to the host device 602 through the field bus, and the host device 602 provides the process parameter set to the operation analysis application (for example, big data Analysis application) service providing device 603 or the host device 602 itself, the analysis application can build an analysis model based on the set of process parameters under normal conditions about each stage obtained in the past time period.
  • the operation analysis application for example, big data Analysis application
  • the control device 601 may send a first message to the host device 602 through the field bus, the first message indicating a first request about the analysis application.
  • the host device 602 may invoke the analysis application by the service providing device 603 or the host device 602 itself, and use the established analysis model to analyze the process parameter set of each stage acquired in the current time period, To determine whether the execution of this stage is abnormal, and the host device 602 codes the analysis result as a call feedback in the second message and sends it back to the control device 601 via the field bus, so that the control device 601 can execute according to the analysis result (for example, Stop the current stage, troubleshoot the current stage, or continue to the next stage) of the industrial process.
  • the analysis result for example, Stop the current stage, troubleshoot the current stage, or continue to the next stage
  • FIG. 7 shows a block diagram of an exemplary computing device 700 for providing services associated with an information system, according to an embodiment of the disclosure.
  • the computing device 700 includes a processor 701 and a memory 702 coupled with the processor 701 .
  • the memory 702 is used for storing computer-executable instructions, and when the computer-executable instructions are executed, the processor 701 executes the methods in the above embodiments (for example, any one or more steps in the foregoing method 200 or 300).
  • a computer-readable storage medium carries computer-readable program instructions for implementing various embodiments of the present disclosure.
  • a computer readable storage medium may be a tangible device that can retain and store instructions for use by an instruction execution device.
  • a computer readable storage medium may be, for example, but is not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing.
  • Computer-readable storage media include: portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or flash memory), static random access memory (SRAM), compact disc read only memory (CD-ROM), digital versatile disc (DVD), memory stick, floppy disk, mechanically encoded device, such as a printer with instructions stored thereon A hole card or a raised structure in a groove, and any suitable combination of the above.
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable programmable read-only memory
  • flash memory static random access memory
  • SRAM static random access memory
  • CD-ROM compact disc read only memory
  • DVD digital versatile disc
  • memory stick floppy disk
  • mechanically encoded device such as a printer with instructions stored thereon
  • a hole card or a raised structure in a groove and any suitable combination of the above.
  • computer-readable storage media are not to be construed as transient signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., pulses of light through fiber optic cables), or transmitted electrical signals.
  • the present disclosure provides a computer-readable storage medium having computer-executable instructions stored thereon for performing various implementations of the present disclosure. method in the example.
  • the present disclosure provides a computer program product tangibly stored on a computer-readable storage medium and comprising computer-executable instructions that, when executed, cause At least one processor executes the methods in various embodiments of the present disclosure.
  • the various example embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, firmware, logic, or any combination thereof. Certain aspects may be implemented in hardware, while other aspects may be implemented in firmware or software, which may be executed by a controller, microprocessor or other computing device.
  • aspects of the embodiments of the present disclosure are illustrated or described as block diagrams, flowcharts, or using some other graphical representation, it is to be understood that the blocks, devices, systems, techniques, or methods described herein may serve as non-limiting Examples are implemented in hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controllers or other computing devices, or some combination thereof.
  • the computer-readable program instructions or computer program products used to execute various embodiments of the present disclosure can also be stored in the cloud, and when called, the user can access the program stored on the cloud for execution through the mobile Internet, fixed network or other networks.
  • the computer-readable program instructions of an embodiment of the present disclosure implement the technical solutions disclosed in accordance with various embodiments of the present disclosure.

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Abstract

Les modes de réalisation de la présente divulgation concernent un procédé et un système qui permettent de fournir un service associé à un système d'informations externe. Un procédé donné à titre d'exemple comprend les étapes suivantes : au niveau d'un dispositif de commande, pendant l'exécution d'un processus industriel, le lancement d'une première demande de service associé à un système d'informations extérieur au dispositif de commande ; au niveau du dispositif de commande, l'envoi, à un dispositif hôte et au moyen d'un bus de terrain, d'un premier message qui indique la première demande ; au niveau du dispositif de commande, la réception, en provenance du dispositif hôte et au moyen du bus de terrain, d'un second message qui indique un retour d'appel pour le service, de manière à acquérir le retour d'appel ; et au niveau du dispositif de commande, l'exécution du processus industriel sur la base du retour d'appel. Grâce au procédé décrit dans les modes de réalisation de la présente divulgation, il n'est pas nécessaire d'acheter un dispositif physique supplémentaire à connecter à un système d'informations externe, ni de mettre à niveau un dispositif de commande classique, et tout service requis est fourni à un dispositif de commande au moyen d'un seul dispositif hôte, ce qui permet de réduire le coût et de fournir un service de manière plus souple.
PCT/CN2021/121098 2021-09-27 2021-09-27 Procédé et système pour fournir un service associé à un système d'informations WO2023044929A1 (fr)

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CN202180102173.2A CN117980835A (zh) 2021-09-27 2021-09-27 用于提供与信息系统相关联的服务的方法和系统

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