WO2020073871A1

WO2020073871A1 - Communication of broadcasting system, method of communicating therewith and device thereof

Info

Publication number: WO2020073871A1
Application number: PCT/CN2019/109441
Authority: WO
Inventors: 李谨; 杨耕田
Original assignee: 比亚迪股份有限公司
Priority date: 2018-10-12
Filing date: 2019-09-30
Publication date: 2020-04-16
Also published as: CN111049605A

Abstract

Provided are communications of a broadcasting system, a method of communicating therewith, and device thereof, wherein a communication method of the broadcasting system comprises: obtaining device organization structure information and device data of each broadcasting system through an SDK corresponding to the each broadcasting system; according to the device organization structure information and the device data, loading the device of the each broadcasting system into a node space of OPCUA in the form of device node, and setting device attribute information corresponding to the device node and a method node used to communicate with the SDK; providing an OPC UA interface according to the device attribute information and the method node, and communicating the each broadcast system with an external system through the OPC UA interface. Therefore, based on the OPC UA technology, the SDKs corresponding to each broadcasting system are integrated, and a unified OPC UA interface is provided, improving communication security and reliability, reducing the broadcasting integration workload of rail transit system monitoring, which does not need to be coupled with external systems, thus, it is easy to maintain and upgrade external systems and various broadcasting system, and other operations.

Description

Broadcasting system communication and its communication method and equipment

Cross-reference of related applications

This disclosure requires the priority of the Chinese patent application number "201811188430.5" submitted by BYD Co., Ltd. on October 12, 2018, with the public name "Communication of the Broadcasting System and the Method and Equipment for Communication Therewith".

Technical field

The present disclosure relates to the technical field of rail communications, and in particular, to a communication of a broadcast system and a method and device thereof.

Background technique

The broadcasting system is an important equipment in the rail transit industry. In the rail transit system, the broadcasting equipment must be connected with external systems (such as the integrated supervisory control system (ISCS) for urban rail transit), passenger information system (PIS) , Access control system, etc.) to communicate, so that the rail transit system can accurately monitor the status of hardware devices in the broadcast system in real time, and respond to and deal with the fault status of the broadcast system in a timely manner, which is the basic requirement for urban rail transit. One.

In the related art, the external system realizes the direct communication between the external system and the broadcast system through the integration of the SDK of the broadcast system and the external system. During the process of implementing the present invention, the inventor found that this method has at least the following disadvantages:

First: The suppliers of the broadcasting equipment included in the broadcasting system are different, and the SDKs produced by the suppliers are different due to market interests and other reasons. Therefore, direct communication between the external system and the broadcasting system requires different integration algorithms to be written according to different SDs. Integration, the integration workload is large.

Second: The direct communication between the external system and the broadcast system leads to a high degree of coupling between the external system and the broadcast system, and the upgrade and maintenance of the SDK in the external system and the broadcast system are restricted.

Public content

The present disclosure provides a broadcast system communication and a method and device for communication therewith, which are used to solve the related art. When the external system is directly integrated with each broadcast system, the integration workload is large and the integration coupling degree is high, both upgrade and maintenance The problem of mutual restriction.

An embodiment of the present disclosure provides a communication method for a broadcast system, which is applied to a communication gateway of a broadcast system, and includes the following steps: acquiring device organization structure information and device data of each broadcast system through an SDK corresponding to each broadcast system; According to the device organization structure information and device data, the devices of each broadcasting system are loaded into the node space of OPC UA in the form of device nodes, and the device attribute information corresponding to the device nodes and the device attribute information corresponding to the device nodes are set A method node of SDK communication corresponding to each broadcasting system; an OPC UA interface is provided according to the device attribute information and the method node, and the communication between each broadcasting system and an external system is realized through the OPC UA interface.

Another embodiment of the present disclosure provides a method for communicating with a broadcasting system. The method is applied to an OPC UA client set according to the OPC UA protocol. The method includes the following steps: broadcasting to a communication gateway of a broadcasting system and a target The OPC UA interface corresponding to the system sends an operation instruction for the target broadcast system based on the OPC UA standard protocol, so that the corresponding OPC UA interface calls the target method node in the communication gateway of the broadcast system to start the corresponding target SDK, and log in to the corresponding target broadcasting system through the target SDK to obtain the target data corresponding to the operation instruction acquired from the target broadcasting system and transmitted by the target SDK, wherein the target method node is In the OPC UA node space of the communication gateway of the broadcast system, a method node corresponding to the operation instruction; receiving the feedback obtained after the communication gateway of the broadcast system encrypts the target data through the public key of the OPC UA client Encrypt target data; decrypt the encrypted target data according to the private key of the OPC UA client and obtain Said operation instruction corresponding to the target data.

An embodiment of another aspect of the present disclosure provides a communication gateway of a broadcasting system, including: a first acquiring module, configured to acquire device organizational structure information and device data of each broadcasting system through an SDK corresponding to each broadcasting system; node creation The module is used to load the devices of each broadcasting system into the node space of the OPC UA according to the device organization structure information and device data, and set device attribute information and usage corresponding to the device node A method node for SDK communication corresponding to each broadcasting system; a communication module for providing an OPC UA interface according to the device attribute information and the method node, and implementing the broadcasting system and the external through the OPC UA interface System communication.

An embodiment of the disclosure further provides an OPC UA client, the OPC UA client is provided in an external system, and the OPC UA client includes: a sending module, which is used to communicate with a target in the communication gateway of the broadcast system The OPC UA interface corresponding to the broadcast system sends an operation instruction for the target broadcast system based on the OPC UA standard protocol, so that the corresponding OPC UA interface calls the target method node in the communication gateway of the broadcast system to start the corresponding Target SDK, and log in to the corresponding target broadcasting system through the target SDK to obtain the target data corresponding to the operation instruction acquired from the target broadcasting system and transmitted by the target SDK, wherein the target method node is In the OPC UA node space of the communication gateway of the broadcasting system, a method node corresponding to the operation instruction; a receiving module, configured to receive the OPC UA and encrypt the target data through the public key of the OPC UA client Encrypted target data with feedback; a second acquisition module for decrypting the encrypted target data according to the private key of the OPC UA client And obtain the target data corresponding to the operation instruction.

Yet another embodiment of the present disclosure provides a communication system of a broadcast system, including: the communication gateway of the broadcast system described in the foregoing embodiment, an external system including the OPC UA client described in the foregoing embodiment, and each broadcast system, wherein The broadcast systems are connected to the communication gateway of the broadcast system, and the external system is connected to the OPC UA interface of the communication gateway of the broadcast system through the OPC client.

The technical solution disclosed in the present disclosure has the following beneficial effects:

Build an OPC UA section broadcasting system gateway, set up SDK communication method nodes corresponding to each broadcasting system in the OPC UA node space, so that the gateway adapts to the SDKs of different suppliers, and can achieve gateway compatibility when changing suppliers. And according to the device organization structure information and device data of each broadcasting system, the corresponding device attribute information and method node are constructed to provide the OPC UA interface according to the device attribute information and method node, and communicate with the external system through the OPC UA interface, improving communication security And reliability, through the SDK communication method node to communicate with various broadcasting systems, thus, the broadcasting system gateway based on OPC UA separates the broadcasting system from the external system, thereby reducing the coupling between the modules and reducing rail transit The workload of broadcast integration monitored by the system.

Additional aspects and advantages of the present disclosure will be partially given in the following description, and some will become apparent from the following description, or be learned through practice of the present disclosure.

BRIEF DESCRIPTION

The above and / or additional aspects and advantages of the present disclosure will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic diagram of an application scenario of integration of a broadcasting system and an external system according to the prior art;

2 is a schematic diagram of an application scenario of integration of a broadcast system and an external system according to an embodiment of the present disclosure;

3 is a flowchart of a communication method of a broadcast system according to an embodiment of the present disclosure;

4 is a schematic diagram of an application scenario of a communication method of a broadcast system according to an embodiment of the present disclosure;

5 is a schematic diagram of a node space according to an embodiment of the present disclosure;

6 is a flowchart of a communication method of a broadcast system according to another embodiment of the present disclosure;

7 is a flowchart of a method of communicating with a broadcasting system according to an embodiment of the present disclosure;

8 is a schematic structural diagram of a communication gateway of a broadcast system according to an embodiment of the present disclosure;

9 is a schematic structural diagram of an OPC UA client according to an embodiment of the present disclosure; and

10 is a schematic structural diagram of a communication system of a broadcast system according to an embodiment of the present disclosure.

detailed description

The embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary, and are intended to explain the present disclosure, and should not be construed as limiting the present disclosure.

The communication of the broadcasting system of the embodiment of the present disclosure and the method and device for communication therewith will be described below with reference to the drawings.

Before explaining the technical solutions of the present disclosure, in order to facilitate the technical personnel of the present disclosure to understand the present disclosure, some technical terms related to the present disclosure are explained here:

OPCUA: the unified architecture of OPC, is a protocol standard for industrial automation control proposed by the OPC Foundation, which uses a typical C / S mode. OPCUA provides safe, reliable and vendor-independent transmission of raw data and pre-processed information from the manufacturing level to the production plan or ERP level. Because OPC UA is independent of manufacturers, the differences between different manufacturers are blurred.

Broadcasting system (PublicAddress, PA), a news dissemination tool that transmits sound through radio waves or wires, is a hardware device that can be controlled through a network.

OPC UA Client: OPC UA client.

OPC UA Server: OPC UA server.

PA proxy: broadcast system control proxy server, can also be understood as the integrated gateway of the broadcast system;

ISCS: the comprehensive monitoring system for urban rail transit, which is composed of general-purpose computers, network equipment and large-scale SCADA software platforms. It is an open system that supports application and integrated development. It can interact with various professional automation systems through open interfaces to build real-time line operation. Information sharing platform.

PIS: The passenger information system, relying on the multimedia network technology, with the computer system as the core, by setting up the hall, platform, entrance and exit, and the display terminal of the train, allowing passengers to accurately understand the train operation information and public media information .

SDK: Software Development Kit (Software Development Kit) is generally a collection of development tools used by some software engineers to build application software for specific software packages, software frameworks, hardware platforms, operating systems, etc.

As analyzed above, in the prior art, when the broadcast systems provided by multiple vendors are directly integrated with external systems, it is necessary to develop and maintain customized SDKs provided by different vendors, resulting in a large workload. The external system and the broadcast system After the integration, the coupling degree is high, and the technical problems that will restrict each other during maintenance or upgrade.

For example, as shown in Figure 1, the PA systems provided by different vendors correspond to different SDKs. Therefore, the ISCS system, PIS system and operation management system of the external system are implemented with the PA1 system, PA2 system, PA3 system and other broadcast systems provided by different vendors. When integrating, it needs to be customized and developed according to the SDK corresponding to different PA systems, which has a large workload and a high degree of coupling.

This disclosure takes into account the technical characteristics of OPCUA providing a unified architecture function, based on its independent nature of the manufacturer, when communicating the broadcast systems of multiple manufacturers with external systems of the rail transit industry, the OPCUA-based broadcast system is developed It is integrated as a broadcast gateway PA proxy and provides a unified interface based on the OPC UA protocol standard. There is no need to customize the SDK. It is convenient to access any professional system that requires access, reducing the workload of integration and adaptation. The OPC UA standard communication bus communicates the broadcast system to an external system such as ISCS, PIS, or operation management via a PA proxy gateway.

As shown in Figure 2, the SDK of each broadcasting system is integrated through OPC UA, and a unified standard OPC UA interface is provided. Each external system can be connected to each broadcasting system through a unified standard OPC UA interface, without considering different Differences before the SDK, the broadcast systems produced by various manufacturers no longer directly integrate with external systems such as ISCS, but use the OPC UA standard to implement a broadcast system integration gateway. ISCS and other external systems are unified with each broadcast system through the broadcast gateway Communication has changed the original way of direct integration through SDK, greatly increasing the security and integrity of data transmission between systems, which can well reduce the coupling between SDK and external systems, and facilitate the maintenance and update of both parties, and As the communication in the rail transit system is complicated and the fault tolerance rate is low, the SDK is decoupled from the external system, which improves the safety and reliability of the communication.

Specifically, for clarity of description, the following embodiment first focuses on the method side applied to the PA system gateway for description. FIG. 3 is a flowchart of a communication method of a broadcast system according to an embodiment of the present disclosure, as shown in FIG. 3 , The method includes:

Step 101: Obtain the device organization structure information and device data of each broadcasting system through the SDK corresponding to each broadcasting system.

Among them, the device organization structure information reflects the actual layout information of the broadcast equipment, including the location information of the broadcast equipment (such as speakers, power amplifiers and broadcast control boxes, etc.) and the connection relationship between the broadcast equipment, etc., the device data equipment includes the broadcast equipment ID Such as identification information, the location of the broadcasting device, the type of broadcasting device, the status of the broadcasting device, the alarm triggering event of the broadcasting device, etc.

In the actual execution process, the way to obtain the device organization structure information and device data of each broadcasting system is different. In an embodiment of the present disclosure, in order to achieve communication with the SDK, the SDK is set to implement different functions different from the broadcasting system. The module of the integration method, referring to FIG. 4, includes the module of the integration method of various business functions such as oral broadcasting, broadcasting, audio file delivery, scheduled broadcasting delivery, equipment status monitoring, fault collection, remote control, and broadcast control box management. For example, through the broadcast control box module in the SDK to adjust the volume of the broadcast equipment, through the voice intercom module for oral broadcast, through the planned audio module for scheduled broadcast delivery, through the fault collection module for fault collection of broadcast equipment and other operations. Furthermore, as shown in FIG. 4, a boot loader module that communicates with each broadcasting system is separately provided, and the boot loader module calls the system login module in the SDK corresponding to each broadcasting system and the integration method in the organization information module to log in to each broadcasting system Through the organization information module, obtain the device organization structure information and device data of each broadcasting system transmitted by the SDK corresponding to each broadcasting system.

Step 102, according to the device organization structure information and device data, load the devices of each broadcasting system into the node space of OPC UA in the form of device nodes, and set the device attribute information corresponding to the device nodes and the corresponding device attributes for each broadcast system Method node for SDK communication.

It should be understood that the modeling of OPC UA is actually a reference between nodes. Nodes can be classified into different node categories according to different uses. In OPC UA, the most important node categories are objects, variables, and methods. Objects can have variables and methods, and can trigger events. In the embodiments of the present disclosure, the broadcast device is used as the device node, the device data of the broadcast device is used as the variable node (attribute node), and the method corresponding to the broadcast device is used as the method node The variable node satisfies the external system's reading, writing, and subscribing to the audio data collected by the broadcast equipment of the broadcast system. The method node satisfies the external system to perform fault reporting, remote control, and scheduled audio distribution control operations according to the input parameters Return the execution result.

In the embodiments of the present disclosure, based on the above-mentioned creation principle of the node space, the node space is constructed with the broadcast device nodes, the reference relationship between the nodes and the nodes is constructed according to the device organization structure information, and the device data is used to describe these nodes, that is, the setup and broadcast devices The broadcast device attribute information corresponding to the node and the method node used to communicate with the SDK.

Specifically, in one embodiment of the present disclosure, based on the modeling principle of OPC UA, the association relationship between location information and device information in each broadcasting system is determined according to device organization structure information and device data, where the location information includes a tree Multi-level location information of the shape-structure relationship, that is, the location information in the broadcast system through the hierarchical relationship, and the direct association of the broadcast equipment at each location, and further, according to the association relationship between the location information and the broadcast equipment information in each broadcast system , Create a multi-level area node with a tree structure relationship and a corresponding device node in the node space of OPC UA, to form a node space with a device organization structure, that is, the node space reflects the reality of devices and devices The connection relationship between.

Among them, as an example, as shown in FIG. 5, the depth of the multi-level position with a tree structure relationship is 4, from the highest level branch node to the fourth level branch node are the broadcast system node-line node-vehicle / ground Node-station / vehicle node, where the broadcast equipment node is located at the leaf node position of the station / vehicle node. In this embodiment, the broadcast equipment node is gradually refined from a large-scale division to a small-scale division according to its location , A device organization with a tree structure was constructed. The device organization was in line with the distribution of actual broadcast equipment, which provided convenience for remote systems to remotely control the broadcast system.

Step 103: Provide an OPC UA interface according to the device attribute information and the method node, and communicate each broadcast system with an external system through the OPC UA interface.

Specifically, based on the above steps, the node space in OPC UA provides a collection of methods and data acquisition for broadcast equipment. In order to facilitate the use of external systems, the node provides OPC UA interface according to the device attribute information and method, through OPC UA interface Realize the communication between each broadcasting system and the external system. That is to say, the present disclosure implements an OPC-UA-based gateway, and the external system communicates with each broadcasting system based on the OPC-UA-based gateway as a communication bridge, changing the integration method of each broadcasting system and external system in the prior art .

Among them, as shown in FIG. 4, the OPC UA interface includes one or more of a subscription interface, a read-write interface, and a method call interface. The method call interface can call different methods, and then realize the broadcast device through the real-time video module in the SDK. Volume adjustment, scheduled broadcast delivery, oral broadcasting, etc., reduction, etc., that is, the external system can communicate with the broadcast system through the corresponding interface, which is based on the OPC UA standard protocol. The external system can achieve the same as the OPC UA protocol The integration of the broadcasting system is simple, and the external system uses the OPC UA communication protocol, which greatly improves the safety and reliability of the integration. Once the SDK of the broadcasting system is upgraded, only the relevant code of the OPC UA-based gateway needs to be modified , You can complete the overall upgrade, ISCS, PIS and other external systems do not require any changes.

In order to more clearly describe the flow chart of the communication method of the broadcast system, the following uses the communication between the external system and each broadcast system as an example to illustrate, as follows:

FIG. 6 is a flowchart of a communication method of a broadcast system according to another embodiment of the present disclosure. As shown in FIG. 6, after the above step 103, the method further includes:

Step 201: Receive an operation instruction sent by an external system through the OPC UA standard protocol through the OPC UA interface.

Specifically, the external system sends an operation instruction based on the OPC UA standard protocol through the OPC UA interface. The content of the operation instruction is different, and the corresponding OPC UA interface that sends the operation instruction is different. For example, when the operation instruction sent is a subscription broadcast device If the data changes, the OPC UA interface sending the operation command is the subscription interface.

Step 202: Invoke the corresponding target method node in the node space of OPCUA according to the operation instruction to start the corresponding target SDK.

Specifically, after receiving the operation instruction, the OPC-UA-based gateway calls the corresponding target method node in the node space of the OPC UA according to the operation instruction to start the corresponding target SDK to facilitate communication with the corresponding broadcasting system.

Step 203, log in to the corresponding target broadcasting system through the target SDK.

In step 204, the target data corresponding to the operation instruction acquired from the target broadcasting system transmitted by the target SDK is received, and the target data is fed back to the external system through the OPC UA interface.

As analyzed above, the modules in the SDK can log in to the broadcast system to perform control operations such as scheduled audio delivery. Therefore, in the embodiments of the present disclosure, log in to the corresponding target broadcast system through the target SDK to receive the target SDK The transmitted target data obtained from the target broadcasting system and corresponding to the operation instruction feeds back the target data to the external system through the OPC UA interface.

In summary, the communication method of the broadcasting system of the embodiment of the present disclosure,

In order to more fully describe the communication method of the broadcast system of the embodiment of the present disclosure, the following description will focus on the method side applied to the OPC UA client. It should be understood that in the actual implementation process, an OPC UA client that communicates with an OPC-UA-based communication gateway is installed in the external system. The client is used for protocol conversion of data transmission, etc. The external system passes the OPC UA client The terminal communicates with a communication gateway based on OPC UA, and sends operation instructions based on the OPC UA standard protocol through the OPC UA interface. Among them, referring to FIG. 4, the OPC UA client includes a browsing interface communication module and method corresponding to the OPC UA interface. Call interface communication module, subscribe interface communication module, etc.

7 is a flowchart of a method of communicating with a broadcasting system according to an embodiment of the present disclosure. As shown in FIG. 7, the method includes:

Step 301: Send an operation instruction for the target broadcast system based on the OPC UA standard protocol to the OPC interface corresponding to the target broadcast system in the communication gateway of the broadcast system, so that the corresponding OPC UA interface calls the target in the communication gateway of the broadcast system The method node starts the corresponding target SDK and logs in to the corresponding target broadcasting system through the target SDK to obtain the target data corresponding to the operation instruction acquired from the target broadcasting system transmitted by the target SDK, wherein the target method node is the communication of the broadcasting system The method node corresponding to the operation instruction in the OPC UA node space of the gateway.

Step 302: The communication gateway of the receiving broadcast system encrypts the target data through the public key of the OPC UA client to obtain the encrypted target data that is fed back.

Step 303: Decrypt the encrypted target data according to the private key of the OPC UA client, and obtain the target data corresponding to the operation instruction.

It should be understood that, in the embodiments of the present disclosure, the OPC UA client is authenticated based on the public key certificate technology, and the core of the public key certificate technology is a pair of keys. The basic principle is: one key is used for encryption The content of the information can only be decrypted by another key paired with it. Therefore, in the embodiment of the present disclosure, OPC uses the public key of the OPC client to encrypt the target data corresponding to the operation instruction to generate an encrypted target The data is sent to the external system, and only the legitimate external system has the corresponding OPC UA client private key. Therefore, the legal OPC with the OPC UA client private key encrypts the target data according to the OPC UA client private key Decrypt to obtain the target data corresponding to the operation instruction. Therefore, when the external system communicates with the broadcasting system, the OPC UA client is implemented according to the OPC UA standard protocol, and the monitoring and control functions are implemented based on the OPC UA gateway interface based on the OPC UA client.

In actual implementation, the basic information of the broadcast system needs to be sent to the external system to facilitate the determination of the corresponding operation instructions based on the basic information of the external system. Specifically, the OPC based UA client sends the OPC based UA interface to the corresponding OPC UA interface. Before the operation instruction of the target broadcast system in the standard protocol, the device organization structure information and device data subscription information of the broadcast system are sent to the subscription interface of the OPC UA, and further, the device organization structure information and device data fed back by the subscription interface are received, and according to the device Organizational structure information and equipment data generate operation instructions.

For example, when the operation instruction determined based on the device organization structure information and device data is for the ISCS external system to control the broadcasting device 1 in the A broadcast system to reduce the volume, as shown in Figure 4, the OPC UA client in the ISCS external system The terminal sends the operation instruction to the corresponding OPC UA method invocation interface based on the OPC UA communication protocol. The method invocation interface invokes the target SDK corresponding to the volume control method node of the broadcasting device 1 according to the operation instruction, and then, according to the target The SDK logs in to the A broadcasting system through the remote control module, and obtains the target data that the A broadcasting system feeds back to the broadcasting device 1 after the volume is reduced. The target data includes the state data of the broadcasting device 1 after the sound is lowered, and then passes the target data The method call interface of OPC UA is fed back to the external system ISCS.

In summary, the broadcast systems produced by various manufacturers no longer directly integrate with professional external systems such as ISCS, but use the OPC UA standard to implement a broadcast system gateway. ISCS and other external systems communicate with each broadcast system through the broadcast gateway. , Changed the original way of direct integration via SDK.

In order to implement the above-mentioned embodiments, the present disclosure also proposes a communication gateway of a broadcasting system.

8 is a schematic structural diagram of a communication gateway of a broadcast system according to an embodiment of the present disclosure. As shown in FIG. 8, the communication gateway includes: a first acquisition module 110, a node creation module 120, and a communication module 130.

Among them, the first obtaining module 110 is configured to obtain the device organization structure information and device data of each broadcasting system through the SDK corresponding to each broadcasting system.

The node creation module 120 is used to load the devices of each broadcasting system into the node space of the OPC UA according to the device organization structure information and device data, and set the device attribute information corresponding to the device node and the device A method node of SDK communication corresponding to the broadcasting system.

The communication module 130 is configured to provide an OPC UA interface according to device attribute information and method nodes, and implement communication between each broadcasting system and an external system through the OPC UA interface.

It should be noted that the foregoing explanation and explanation of the embodiment of the communication method of the broadcast system is also applicable to the communication gateway of the broadcast system of this embodiment, and its implementation principle is similar, and will not be repeated here.

In order to implement the above embodiments, the present disclosure also proposes an OPC UA client.

9 is a schematic structural diagram of an OPC UA client according to an embodiment of the present disclosure. As shown in FIG. 9, the OPC UA client includes a sending module 210, a receiving module 220, and a second obtaining module 230.

Among them, the sending module 210 is used to send an operation instruction for the target broadcasting system based on the OPC UA standard protocol to the OPC UA interface corresponding to the target broadcasting system in the communication gateway of the broadcasting system, so that the corresponding OPC UA interface calls the broadcasting system The target method node in the communication gateway to start the corresponding target SDK and log in to the corresponding target broadcasting system through the target SDK to obtain the target data transmitted from the target broadcasting system corresponding to the operation instruction transmitted by the target SDK, wherein the target method node It is the method node corresponding to the operation instruction in the OPC UA node space of the communication gateway of the broadcasting system.

The receiving module 220 is used to receive the encrypted target data obtained after the communication gateway of the broadcasting system encrypts the target data through the public key of the OPC UA client.

The second obtaining module 230 is configured to decrypt the encrypted target data according to the private key of the OPC UA client to obtain target data corresponding to the operation instruction.

It should be noted that the foregoing explanation of the embodiment of the method for communicating with the broadcast system is also applicable to the OPC UA client of this embodiment, and its implementation principle is similar, and will not be repeated here.

In order to implement the above-mentioned embodiments, the present disclosure also proposes a communication system of a broadcast system.

10 is a schematic structural diagram of a communication system of a broadcast system according to an embodiment of the present disclosure. As shown in FIG. 10, the communication system of the broadcast system includes: a communication gateway 100 of a broadcast system, an external system 200, and each broadcast system 300. The communication gateway 100 of the system is as described in the foregoing embodiment, the external system 200 includes the OPC UA client as described in the foregoing embodiment, wherein each broadcast system 300 is connected to the communication gateway 100 of the broadcast system, and the external system 200 passes the OPC UA client The terminal is in communication connection with the OPC UA interface of the communication gateway 100 of the broadcasting system.

In the description of this specification, the description referring to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means specific features described in conjunction with the embodiment or examples , Structure, material or characteristic is included in at least one embodiment or example of the present disclosure. In this specification, the schematic expression of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, without contradicting each other, those skilled in the art may combine and combine different embodiments or examples and features of the different embodiments or examples described in this specification.

In addition, the terms “first” and “second” are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined with "first" and "second" may include at least one of the features either explicitly or implicitly. In the description of the present disclosure, the meaning of "plurality" is at least two, for example, two, three, etc., unless specifically defined otherwise.

Any process or method description in a flowchart or otherwise described herein may be understood as representing a module, segment, or portion of code that includes one or more executable instructions for implementing custom logic functions or steps of a process And the scope of the preferred embodiment of the present disclosure includes additional implementations, in which the functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, which shall It is understood by those skilled in the art to which the embodiments of the present disclosure belong.

The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be regarded as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium, To be used by or in combination with an instruction execution system, device, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from an instruction execution system, device, or device) Or equipment. It should be understood that various parts of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if it is implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete with logic gates for implementing logic functions on data signals Logic circuits, dedicated integrated circuits with appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.

A person of ordinary skill in the art can understand that all or part of the steps carried in the method of the above embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. When executed, it includes one of the steps of the method embodiment or a combination thereof.

In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing module, or each unit may exist alone physically, or two or more units may be integrated into one module. The above integrated modules can be implemented in the form of hardware or software function modules. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk. Although the embodiments of the present disclosure have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations to the present disclosure, and those of ordinary skill in the art may understand the above within the scope of the present disclosure The embodiments are changed, modified, replaced, and modified.

Claims

A communication method of a broadcast system, which is applied to a communication gateway of a broadcast system, is characterized by comprising the following steps:

Obtain the device organization structure information and device data of each broadcasting system through the SDK corresponding to each broadcasting system;

According to the device organization structure information and device data, the devices of each broadcasting system are loaded into the node space of OPC UA in the form of device nodes, and the device attribute information corresponding to the device nodes and the device attribute information corresponding to the device nodes are set Method node of SDK communication corresponding to each broadcasting system;

According to the device attribute information and the method node, an OPC UA interface is provided, and communication between each broadcast system and an external system is implemented through the OPC UA interface.
The method according to claim 1, wherein the acquiring the device organization structure and device data of each broadcasting system through the SDK corresponding to each broadcasting system includes:

Call the system login module in the SDK corresponding to each broadcasting system and the integration method in the organization information module to log in to each broadcasting system;

Obtain the device organization structure and device data of each broadcasting system.
The method according to claim 1 or 2, wherein the loading the devices of each broadcasting system into the node space of the OPC UA according to the device organization structure information and device data includes:

Determining the association relationship between the location information and the device information in each broadcasting system according to the device organization structure information and device data, wherein the location information includes multi-level location information having a tree structure relationship;

According to the association relationship between the location information and the device information in each broadcasting system, create a multi-level area node with a tree structure relationship and a corresponding device node in the node space of the OPC UA to form a device organization structure Node space.
The method according to any one of claims 1-3, wherein the OPC UA interface includes:

One or more of the subscription interface, read-write interface, method call interface, and browsing interface.
The method according to any one of claims 1-4, further comprising:

Receiving the operation command sent by the external system through the OPC UA standard protocol through the OPC UA interface;

Call the corresponding target method node in the node space of the OPC UA according to the operation instruction to start the corresponding target SDK;

Log in to the corresponding target broadcast system through the target SDK;

Receiving target data corresponding to the operation instruction acquired from the target broadcasting system and transmitted by the target SDK, and feeding back the target data to the external system through the OPC UA interface.
A method of communicating with a broadcasting system, characterized in that the method is applied to an OPC UA client set up according to the OPC UA protocol. The method includes the following steps:

Send an operation instruction for the target broadcast system based on the OPC UA standard protocol to the OPC UA interface corresponding to the target broadcast system in the communication gateway of the broadcast system, so that the corresponding OPC UA interface calls the communication gateway of the broadcast system The target method node in starts the corresponding target SDK and logs in to the corresponding target broadcasting system through the target SDK to obtain the target corresponding to the operation instruction acquired from the target broadcasting system and transmitted by the target SDK Data, wherein the target method node is a method node corresponding to the operation instruction in the OPC UA node space of the communication gateway of the broadcast system;

The communication gateway that receives the broadcast system encrypts the target data by encrypting the target data through the public key of the OPC UA client;

Decrypt the encrypted target data according to the private key of the OPC UA client, and obtain the target data corresponding to the operation instruction.
The method according to claim 6, wherein the OPC UA interface corresponding to the target broadcast system in the communication gateway to the broadcast system sends an operation instruction for the target broadcast system based on the OPC UA standard protocol, further comprising :

Sending device organization structure information and device data subscription information of the broadcasting system to the subscription interface of the OPC UA;

Receiving the device organization structure information and device data fed back by the subscription interface, and generating the operation instruction according to the device organization structure information and device data.
A communication gateway of a broadcasting system, characterized in that it includes:

A first acquiring module, configured to acquire device organization structure information and device data of each broadcasting system through an SDK corresponding to each broadcasting system;

The node creation module is used to load the devices of each broadcasting system into the node space of the OPC UA according to the device organization structure information and device data, and set device attribute information corresponding to the device node And a method node for SDK communication corresponding to each broadcasting system;

The communication module is configured to provide an OPC UA interface according to the device attribute information and the method node, and implement communication between the broadcast systems and external systems through the OPC UA interface.
An OPC UA client, characterized in that the OPC UA client is set in an external system, and the OPC UA client includes:

The sending module is used to send an operation instruction for the target broadcasting system based on the OPC UA standard protocol to the OPC interface corresponding to the target broadcasting system in the communication gateway of the broadcasting system, so that the corresponding OPC UA interface calls the The target method node in the communication gateway of the broadcast system to start the corresponding target SDK, and log in to the corresponding target broadcast system through the target SDK to obtain the operation and the operation acquired from the target broadcast system transmitted by the target SDK Target data corresponding to the instruction, wherein the target method node is a method node corresponding to the operation instruction in the OPC UA node space of the communication gateway of the broadcast system;

A receiving module, configured to receive the encrypted target data that is obtained after the communication gateway of the broadcast system encrypts the target data through the public key of the OPC UA client;

The second obtaining module is configured to decrypt the encrypted target data according to the private key of the OPC UA client and obtain the target data corresponding to the operation instruction.
A communication system of a broadcasting system, characterized by comprising: a communication gateway of the broadcasting system according to claim 7, an external system including the OPC UA client according to claim 8 and each broadcasting system, wherein the Each broadcast system is connected to the communication gateway of the broadcast system, and the external system is communicatively connected to the OPC UA interface of the communication gateway of the broadcast system through the OPC client.