Information model of coal mine safety production monitoring system based on OPC UA
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摘要: 煤矿安全生产监控系统中子系统种类较多，各个子系统的设备型号繁杂，设备信息异构导致数据语义完备性低及信息交互数据碎片化。目前煤矿信息化建设中，虽然各个子系统基本实现了网络集成，但所获得的海量数据无法有效共享，集成分析无法进行。针对上述问题，提出一种基于OPC UA的煤矿安全生产监控系统信息模型。根据煤矿安全生产监控系统的相关信息和OPC UA信息模型通用建模规则，分析了煤矿安全生产监控实际设备与信息模型的映射关系，给出了煤矿安全生产监控系统信息模型整体架构。当煤矿安全生产监控系统中需要扩展新的功能时，可在功能集进行扩展；当子系统中需要增添新的设备时，可在设备集中增加新的组件，从而确保信息模型的可扩展性。以瓦斯抽采监控系统信息模型为例，采用UaModeler工具建立传感器信息模型，对该信息模型进行图形化设计后，生成XML描述文件并导入OPC UA服务器的地址空间中。通过第三方客户端UaExpert连接服务器对OPC UA信息模型进行测试，结果表明，该信息模型可根据映射规则实现在OPC UA地址空间的映射，并通过OPC UA客户端访问服务器的地址空间，获取各个煤矿安全生产监控子系统中任意对象的属性，验证了使用OPC UA信息模型实现信息互联互通的可行性。
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关键词:
- 煤矿信息化 /
- 煤矿安全生产监控 /
- OPC UA信息模型 /
- 数据交互 /
- XML描述文件
Abstract: There are many kinds of subsystems in the coal mine safety production monitoring system, and the types of equipments in the subsystems are multifarious, which leads to the low semantic completeness of data and the fragmentation of information interaction data caused by the heterogeneous information of equipment. At present, although the research of coal mine informatization construction has basically realized the network integration of each subsystem, the massive data obtained can not be effectively shared, and the integration analysis can not be carried out. In order to solve the above problems, this paper proposes an information model of coal mine safety production monitoring system based on OPC UA. According to the relevant information of coal mine safety production monitoring system and the general modeling rules of OPC UA information model, the mapping relationship between actual equipment of coal mine safety production monitoring system and information model is analyzed, and the overall structure of information model of coal mine safety production monitoring system is proposed. It is pointed out that when new functions need to be extended in coal mine safety production monitoring system, they can be extended in function set. When new equipment needs to be added to the subsystem, new components can be added to the equipment set to ensure the extensibility of the information model. Taking the information model of gas extraction monitoring system as an example, the information model of methane sensor is established by using UaModeler tool. After the information model is graphically designed, the XML description file is generated and imported into the address space of OPC UA server. Through the third-party client UaExpert connecting server to test the information model of the OPC UA, the results show that the information model can realize the mapping in the address space of the OPC UA according to the mapping rules, and access the server's address space through the OPC UA client. The attributes of any object in each coal mine safety production monitoring subsystems can be obtained, which verifies the feasibility of using the OPC UA information model to realize the information interconnection. -
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图 2 客户端与服务器之间上下文通信过程
Figure 2. Context communication process between client and server
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图 3 实际设备与信息模型的映射关系
Figure 3. Mapping relationship between actual equipment and information model
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图 5 基于OPC UA的煤矿安全生产监控系统信息模型整体架构
Figure 5. Overall structure of information model of coal mine safety production monitoring system based on OPC UA
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