Data caching and processing mechanism applied to industrial control system
A technology for industrial control systems and data caching, applied in general control systems, control/regulation systems, comprehensive factory control, etc., and can solve problems such as rate mismatches
Pending Publication Date: 2020-01-10
深圳市爱康生物科技股份有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, to provide a data cache processing mechanism applied to the industrial control system, which can cache multiple data commands generated by the industrial control system in real time, when there is a delay in the process of processing these data When it is time or uncertain, it can temporarily save the data to solve the problem of mismatch between data generation and processing rate. In addition, when encountering unexpected events and errors in operation, or even system stop and interruption, It can also ensure the reliability, effectiveness and no loss of data to the greatest extent, greatly improving the fault tolerance of the system and ensuring the stable and orderly operation of the equipment
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[0020] In order to describe in detail the technical characteristics of the present invention and the achieved purpose and effect, further description will be made below in conjunction with the accompanying drawings:
[0021] Such as Figure 1-2 As shown, a data cache processing mechanism applied to the industrial control system, including the real-time data cache step of the industrial control system and the data reading step of the industrial control system, the real-time data cache step of the industrial control system and the data of the industrial control system In the reading step, an in-memory database is used, and the in-memory database is realized by setting up a cache area, and the size of the cache area is set to 2048 bytes, which can satisfy the use of the command cache between the PC and the submodule, and set Write pointer (WriteIndex) and read pointer (ReadIndex). The write pointer indicates that the command sent by the PC will be stored from this location, and t...
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The invention discloses a data caching and processing mechanism applied to an industrial control system. The data caching and processing mechanism applied to the industrial control system comprises areal-time data caching step of the industrial control system and a data reading step of the industrial control system; an in-memory database is used in the real-time data caching step of the industrial control system and the data reading step of the industrial control system and is realized by establishing a caching area; the size of the caching area is set to 2048 bytes, and can meet the commandcache usage between a PC (Personal Computer) and a sub-module; a write index and a read index are set; the write index is used for indicating that the command sent from the PC is received and stored from this position; and the read index is used for indicating the initial position of the command to be executed by the submodule receiving the command
Description
technical field [0001] The present invention relates to a data cache mechanism, and more specifically relates to a data cache processing mechanism applied to an industrial control system. Background technique [0002] The PC can communicate with each module connected to the bus through the CAN bus, and they only need to pass two cables with differential signals to complete the communication. Because in the CAN protocol, the identifier of the message It does not represent the address of the node, but is related to the content of the message. Therefore, when a node on the CAN bus sends data, it is broadcast to all nodes in the network in the form of a message, and for each node, no matter Whether the data is sent to itself, it is received and processed, that is, it is determined whether the software needs the message according to the value of the identifier (CAN ID), if necessary, it will be copied, if not, the message will be discarded. When the PC sends multiple commands at...
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Patent Timeline
Login to View More IPC IPC(8): G05B19/418
CPCG05B19/41855G05B2219/31136Y02P90/02
Inventor 江伟敏曹志刚孙友岭徐怀海朱辉
Owner 深圳市爱康生物科技股份有限公司