Object-oriented real-time database storage method adopting double high-speed engines
An object-oriented, database technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as direct application can not meet demand, huge engineering cost, space-time resource overhead, etc., to improve scalability and maintenance. security and the effect of ensuring real-time access efficiency
Active Publication Date: 2012-09-05
南京国电南自轨道交通工程有限公司
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Problems solved by technology
However, the existing monitoring systems are generally born from a certain professional field, designed for a certain professional field, and built on the basis of objects, which makes the realized system once applied to another field, and the direct application often cannot meet the needs. Reluctant application through expansion will cause a large amount of space-time resource overhead; but to avoid this situation, most systems have to be redesigned and implemented, resulting in huge engineering costs
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[0020] Object-oriented configuration adopts an object-oriented method for configuration. In order to support object-oriented configuration, the data storage structure of the real-time database also permeates the object-oriented design concept. Here are some concepts related to the object-oriented concept. :
[0021] ●Data type
[0022] The description information of various engineering objects and real-time data information related to real-time status are stored in the real-time database. These information need to be described with different types of data. For example, the point addresses in the equipment may use integer numbers, and the voltage values may use floating point numbers and more.
[0023] ●Object type
[0024] Data with the same type of characteristics is regarded as an object type, and each type of object generally corresponds to a certain engineering object in a real application, which serves as the feature abstraction and data description of the object in t...
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The invention discloses an object-oriented real-time database storage method adopting double high-speed engines. In the method, a real-time database takes attribute as a basic tissue and a design unit, and the full support of the description of all types of data and a uniform approach for the access of various data are realized by effectively using the modes of inheritance, overload, multi statesand the like in modern advanced program language, packaging a uniform interface suitable for all data types and applying special interfaces suitable for all data types; and then the required attributes with general data types are set, objects are formed from the required attributes, and an integrated real-time database is finally built by the objects, wherein the real-time data base comprises an object set which includes various type of objects, attribute lists are included in each object, and the types and the sequence of attribute instances are determined by the attribute type included by an object type. The real-time database of the invention supports flexible object-oriented configuration while guaranteeing the real-time access efficiency, thereby having strong generality and flexibility.
Description
Technical field: [0001] The technical invention relates to the field of industrial automation, in particular to the field of distributed monitoring systems. The technical invention can be widely applied to applications such as power grid monitoring, electrified railways and urban rail transit, and comprehensive monitoring in the field of industrial automation. Background technique: [0002] In the field of industrial control, with the development of automation technology and the improvement of monitoring automation level, the monitoring system is gradually developing from a desktop system to a distributed system, and from a dedicated system to a multi-application and even an integrated system. This is especially noticeable in the urban rail transit industry. From the beginning, the monitoring system was only used in power dispatching and building automation fields, and gradually developed various professional systems such as power monitoring, environmental monitoring, fire pr...
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IPC IPC(8): G06F17/30
Inventor 戴宏斌包德梅朱恩云
Owner 南京国电南自轨道交通工程有限公司