Redundancy switching method for industrial gateway, industrial gateway and storage medium

A technology of redundant switching and gateway, applied in the direction of network connection, comprehensive factory control, data exchange network, etc., can solve the problems of high availability and poor redundant performance, improve reliability and workability, and reduce downtime risk, the effect of increasing switching flexibility

Active Publication Date: 2021-06-01
杭州康吉森自动化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, gateway redundancy is an indispensable part of the control system. In the existing technology, 1:1 hot backup redundancy technology is mostly used, and two identical gateways are in operation at the same time, and one of them is in normal working state. The collected data is reported to the controller, and the other one is in the standby state and does not participate in data collection. When the working gateway fails, the standby gateway enters the working state and completes non-disruptive switching. However, in some cases, this method fails when the working gateway fails After switching to the standby gateway directly, the redundancy performance is poor and cannot meet the requirements of high availability on site

Method used

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  • Redundancy switching method for industrial gateway, industrial gateway and storage medium
  • Redundancy switching method for industrial gateway, industrial gateway and storage medium
  • Redundancy switching method for industrial gateway, industrial gateway and storage medium

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Embodiment 1

[0033] attached figure 1An industrial gateway redundancy system disclosed in this embodiment includes a master gateway, a backup gateway and multiple slave stations, the master gateway and the backup gateway are connected to each other; multiple slave stations, that is, slave devices, are respectively connected to the master gateway and the slave devices through at least one bus. The backup gateway is connected; the master gateway is configured to collect data from each slave station, and judge whether it is necessary to switch from the first working state to the second working state according to the number and / or distribution of communication failure slave stations of each gateway. The standby gateway is configured to switch from the second working state to the first working state after receiving a state switching notification or interrupting communication with the main gateway. Wherein, the first working state is configured to report the successfully collected slave station ...

Embodiment 2

[0059] attached image 3 A redundant switching method for industrial gateways disclosed in this embodiment can be used for various industrial gateways, for example, for industrial gateways in the industrial gateway redundancy system described in the previous embodiment. This method is mainly used for industrial The main gateway in the gateway redundant system is the main gateway. In order to describe clearly, the following embodiments will be described by taking the industrial gateway redundant system of Embodiment 1 as an example. Of course, this data processing method can be applied to other embodiments and various industrial redundant systems. In the industrial gateway of the system, the redundant switching method mainly includes the following steps:

[0060] Step S1, collecting slave station data, and analyzing its own fault level according to the acquired data of each slave station.

[0061] The master gateway collects the data of the slave station and reports it to the ...

Embodiment 3

[0088] attached Figure 5 An industrial gateway redundancy system disclosed in this embodiment includes a first gateway, a second gateway, a third gateway and a plurality of slave stations, and the first gateway, the second gateway and the third gateway are connected to each other; the plurality of slave stations That is, the slave devices are respectively connected to the first gateway, the second gateway and the third gateway through at least one bus; the first gateway is configured to collect the data of each slave station, and according to the data collection situation of the slave stations on the same bus and / or each gateway According to the number of communication failure slave stations of each gateway, it is necessary to judge whether it is necessary to switch from the first working state to the second working state, or to judge whether it is necessary to switch from the first working state to the second working state according to the number and / or distribution of commun...

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Abstract

The invention discloses a redundancy switching method for an industrial gateway, which comprises the following steps: acquiring slave station data, analyzing the own fault level according to the acquired slave station data, and sending time synchronization information to a standby gateway, judging whether the first working state needs to be switched to the second working state or not according to the number and / or distribution of communication fault slave stations of all gateways, and if the second working state is not switched, reporting slave station data which are successfully collected to a controller; and sending a supplementary acquisition notification of the slave station address with the data acquisition fault to the standby gateway in the second working state, so that the maximum redundancy of a plurality of gateways is realized. The standby gateway can carry out auxiliary acquisition and can be switched to the main working state according to the fault condition, and the switching flexibility of the industrial gateway redundant system is improved. And the reliability and workability of the system are improved.

Description

technical field [0001] The invention relates to the field of industrial data collection, in particular to a redundant switching method for an industrial gateway, an industrial gateway and a storage medium. Background technique [0002] In the field of industrial automation control, in order to avoid the occurrence of factory shutdown, the industrial automation control system is required to have high reliability and high availability. In the prior art, the high availability of the system is generally improved through redundancy. The specific method is to Key components of the control system or key control applications are replicated or backed up to ensure real-time collection of on-site data and realize continuous operation of factory production. [0003] The function of a gateway is to connect two or more heterogeneous networks so that they can communicate with each other. The industrial gateway integrates the heterogeneous sensor network into the industrial Internet, perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L1/22H04L12/66
CPCH04L41/0663H04L41/0631H04L1/22H04L12/66Y02P90/02
Inventor 李华军温宜明周渊敏
Owner 杭州康吉森自动化科技有限公司
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