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Upper computer data write-out method and device

A data and bit computer technology, which is applied to the field of data writing methods and devices of the host computer, can solve the problems of long control period and inability to realize high-speed real-time control, etc., and achieves the effect of optimizing the writing strategy and improving the efficiency of data writing.

Pending Publication Date: 2021-12-28
ZHEJIANG SUPCON TECH
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Problems solved by technology

If the host computer platform software wants to write a large amount of data to this type of data source, the write speed allowed by the data source and the management strategy of the host computer for the written data will restrict the selection of the shortest write control period, that is, it is necessary to set a shorter Long control cycle, unable to achieve high-speed real-time control

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  • Upper computer data write-out method and device
  • Upper computer data write-out method and device
  • Upper computer data write-out method and device

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Embodiment Construction

[0050] During the research, the applicant found that in the field of industrial control, the host computer software initiates and writes the most applications for control algorithms such as PID controllers, sequence control, and interlocking, as well as the operations of operators on the interface. Some write-out requests are sporadic, that is, not every scan cycle needs to be written out, but once a write-out request is initiated, it is hoped that the write-out process will be completed as soon as possible. Therefore, when designing the write-out algorithm, we should make full use of the statistical characteristics of the write-out application, and make full and efficient use of the limited data write-in bandwidth that controllers such as DCS and PLC can provide by dynamically constructing the write-out sequence .

[0051] According to the development practice, for the scale of 100-300 write-out points, the existing technology needs a control period of 5-10 seconds to complet...

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Abstract

The invention provides an upper computer data write-out method and device, and the method comprises the steps: building a data table corresponding to each data source in advance, updating the data table corresponding to the data source when a platform is started or data points of the data source are modified, and determining a corresponding offset step length according to the total data number of the data table; and when a preset condition is met, an offset is set, performing data read-write polling on the data table queue according to the offset, so that the data in the data table can obtain an equal read-write probability, and the preset condition is that a platform allows to operate data read-write logic. By dynamically constructing the write-out sequence and optimizing the write-out strategy of the upper computer, the data write-out efficiency can be improved, so that a short control period can be set to ensure that all the data can be written out in one control period, and high-speed real-time control is realized.

Description

technical field [0001] The present application relates to the technical field of industrial control, in particular, to a method and device for writing data from a host computer. Background technique [0002] Database and data communication technology are the basic technologies in various fields of modern society. Information transmission is realized through data interaction between various data sources, and improving the data interaction rate has always been the key direction of technology research and development. [0003] In the industrial field, control systems such as DCS (Distributed Control Systems) and PLC (Programmable Logic Controller) are common data sources. Due to hardware performance constraints or security policy restrictions, such data sources are often The control cycle (second level) only allows writing and updating limited data. If the host computer platform software wants to write a large amount of data to this type of data source, the write speed allowed...

Claims

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Application Information

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IPC IPC(8): G06F16/22G06F16/23G06F16/25
CPCG06F16/2282G06F16/23G06F16/25
Inventor 刘双刚叶蓬古勇马越峰刘金刚韩斌陆海琛张军魏捷
Owner ZHEJIANG SUPCON TECH
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