A method for identifying master-slave working states of redundant controllers of a DCS system

Abstract

The application relates to the technical field of DCS system redundant controller working state identification, and particularly discloses a kind of identification method of DCS system redundant controller master-slave working state, design " master control " sticker and " slave control " sticker, " master control " sticker is pasted to the controller card of master control working state, " slave control " sticker is pasted to the controller card of slave control working state;Observe the matching relationship of the controller with corresponding controller running state indicator light pasted with " master control " sticker or " slave control " sticker, judge whether the master-slave redundancy switching of controller has occurred, and judge the fault type of controller;The application is a kind of intuitive, visual means, records the master-slave running state before controller;When DCS system server, operating station is far away from the field between cabinet, can be based on the identification sticker fast analysis, handle controller system fault, eliminate DCS system running security risk as soon as possible, restore production service as soon as possible.

Description

Technical Field

[0001] This invention relates to the field of DCS system redundant controller operating status identification technology, specifically to a method for identifying the master-slave operating status of DCS system redundant controllers. Background Technology

[0002] Currently, a DCS system is configured with one master controller and one slave controller. Both the master and slave controllers have LED screens and indicator lights on their cards. During maintenance, DCS system maintenance personnel have encountered the following two difficulties:

[0003] 1. The servers in the controller cabinet and the central control room are placed in separate areas. When the inspectors between the cabinets inspect the operating status of the controller, they cannot determine whether the controller has undergone a master-slave switch based solely on the LED screen and indicator lights on the controller card.

[0004] 2. When any controller malfunctions, experiences an unexpected power outage, or suffers a power fluctuation, maintenance personnel cannot immediately determine whether a master-slave switch has occurred based on the status indicator lights of the field controllers. This hinders the accurate location of the faulty component and the scope of its impact, severely impeding rapid troubleshooting, elimination of potential system malfunctions, and restoration of production. Therefore, a method for identifying the master-slave working status of redundant controllers in a DCS system is needed to address the problems of inconvenience in determining whether a master-slave redundancy switch has occurred and the slow pace of fault analysis in existing DCS systems. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a method for identifying the master-slave working status of redundant controllers in a DCS system.

[0006] The technical solution adopted by this invention to solve its technical problem is: a method for identifying the master-slave working status of redundant controllers in a DCS system, comprising the following steps:

[0007] 1) Design "Master Control" sticker and "Slave Control" sticker. The "Master Control" sticker is pasted on the controller card in the master control working state, and the "Slave Control" sticker is pasted on the controller card in the slave control working state.

[0008] 2) Observe the matching relationship between the controller with the "Master" or "Slave" sticker and the corresponding controller operation status indicator light to determine whether the controller has undergone master-slave redundancy switching and to determine the type of fault that has occurred in the controller.

[0009] 3) When it is found during the inspection that the current operating status indicator of the controller with the "Master" sticker is in the master operating status and the current operating status indicator of the controller with the "Slave" sticker is in the slave operating status, it can be directly determined that the controller group has not undergone master-slave redundancy switching and the controller is operating normally.

[0010] 4) When it is found during the inspection that the controller with the "Master" or "Slave" sticker does not match the corresponding controller operation status indicator, it indicates that a master-slave redundancy switch has occurred between the controllers in the same group, and it is necessary to check the corresponding controller or control system for problems.

[0011] Specifically, in step 4), if during inspection it is found that the current operating status indicator light of the controller with the "Master Control" sticker is in slave control mode, and the current operating status indicator light of the controller with the "Slave Control" sticker is in master control mode, and all other indicators of the controller are normal, it can be directly determined that the controller group has undergone master-slave redundancy switching, and the controller card with the "Master Control" sticker has a fault or has experienced a power outage. The root cause of the switching should be investigated as soon as possible to eliminate potential system operation hazards. The impact of this situation is: it will not affect the field equipment and normal monitoring.

[0012] Specifically, in step 4), if during inspection it is found that the current operating status indicator light of the controller with the "Master" sticker is in the master operating state, and all other operating indicator lights of the controller are normal, while the current operating indicator light of the controller with the "Slave" sticker is reporting an error or not lit, it can be directly determined that the controller card with the "Slave" sticker is faulty or has lost power. This group of controllers has not undergone master-slave redundancy switching. The root cause of the slave controller problem should be investigated as soon as possible to eliminate potential system operation hazards. The impact of this situation is: it will not affect the field equipment and normal monitoring.

[0013] Specifically, in step 4), if during inspection it is found that the current operating status indicator light of the controller with the "Master Control" sticker is in the master control working state, and other indicator lights of the controller are normal, while the current operating status indicator light of the controller with the "Slave Control" sticker is in the master control working state, it can be directly determined that the controller group has not experienced a master-slave switch. The cause of the problem is: a redundant module failure or a problem with the redundant communication line, causing the controller to lose its redundant synchronization function. The impact of this situation is: it will not affect the field equipment or normal monitoring.

[0014] Specifically, in step 4), when it is found during inspection that the current operating status indicator light of the controller with the "Master Control" sticker is in slave control mode, and the current operating status indicator light of the controller with the "Slave Control" sticker is in slave control mode, the impact of this situation is: the control system has experienced a serious malfunction, the controller has stopped working, seriously affecting production operations, and production needs to be restored as soon as possible.

[0015] Specifically, in step 4), when it is found during inspection that the current operating status indicator light of the controller with the "Master Control" sticker is in slave control mode, but the controller's operating indicator light shows a serious error or is not lit, while the current operating indicator light of the controller with the "Slave Control" sticker is in slave control mode, the impact of this situation is: the control system has experienced a serious fault, the controller has stopped working, seriously affecting production operations, and production needs to be restored as soon as possible.

[0016] The present invention has the following beneficial effects:

[0017] The method for identifying the master-slave working status of redundant controllers in a DCS system designed in this invention is an intuitive and visual means of recording the previous master-slave operating status of the controllers.

[0018] Freed from the constraints of monitoring networks, servers, and operator stations, this label allows for rapid analysis and handling of controller system faults when DCS servers or operator stations experience power outages or malfunctions and cannot be monitored, or when DCS system servers or operator stations are located far from the server racks. This enables the quick elimination of potential safety hazards in DCS system operation and the rapid restoration of production services. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the "main controller" sticker.

[0020] Figure 2 This is a structural diagram of the "controller". Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Example 1:

[0023] A method for identifying the master-slave working status of redundant controllers in a DCS system, such as... Figure 1-2As shown, firstly, identification stickers are made to indicate the master and slave operating states of the DCS redundant controllers. These are "Master" and "Slave" stickers, circular in shape and fixed using an adhesive method. The background color of the "Master" sticker is green, and the background color of the "Slave" sticker is yellow. When affixing the stickers, select the matching sticker according to the current operating state of the controller, peel off the backing paper, and directly stick the self-adhesive sticker to the corresponding controller card. The "Master" sticker is affixed to the controller card in the master operating state, and the "Slave" sticker is affixed to the controller card in the slave operating state. These identification stickers can help inspection and maintenance personnel quickly diagnose the controller's operating status, promptly detect abnormalities in the control system, quickly eliminate potential safety hazards in system operation, and quickly restore production services.

[0024] The method for reading and using the label sticker is as follows:

[0025] 1. When during inspection, if the current operating status indicator light of the controller with the "Master Control" sticker is in the master control working state, and the current operating status indicator light of the controller with the "Slave Control" sticker is in the slave control working state, it can be directly determined that the controller group has not undergone master-slave redundancy switching and the controller is operating normally.

[0026] 2. If, during inspection, the current operating status indicator light of a controller with a "Master" sticker is in slave mode, and the current operating status indicator light of a controller with a "Slave" sticker is in master mode, and all other indicators of the controller are normal, it can be directly determined that the controller group has undergone master-slave redundancy switching. The controller card with the "Master" sticker is faulty or has experienced a power outage. The root cause of the switching should be investigated as soon as possible to eliminate potential system malfunctions. The impact of this situation is that it will not affect on-site equipment or normal monitoring.

[0027] 3. When during inspection, if the current operating status indicator light of the controller with the "Master" sticker is in the master operating state, and all other operating indicator lights of the controller are normal, while the current operating indicator light of the controller with the "Slave" sticker is malfunctioning or not lit, it can be directly determined that the controller card with the "Slave" sticker is faulty or has lost power. This group of controllers has not undergone master-slave redundancy switching. The root cause of the slave controller problem should be investigated as soon as possible to eliminate potential system operation hazards. The impact of this situation is: it will not affect the field equipment or normal monitoring.

[0028] 4. When during inspection, if the current operating status indicator light of the controller with the "Master Control" sticker is found to be in the master control working state, and other indicator lights of the same controller are normal, while the current operating status indicator light of the controller with the "Slave Control" sticker is in the master control working state, it can be directly determined that the controller group has not undergone master-slave switching. The cause of the problem is: a fault in the redundant module or a problem with the redundant communication line, causing the controller to lose its redundant synchronization function. The impact of this situation is: it will not affect the field equipment or normal monitoring.

[0029] 5. When during inspection it is found that the current operating status indicator light of the controller with the "Master Control" sticker is in slave control mode, while the current operating status indicator light of the controller with the "Slave Control" sticker is in slave control mode, the impact of this situation is: the control system has suffered a serious fault, the controller has stopped working, seriously affecting production operation, and production needs to be restored as soon as possible.

[0030] 6. When during inspection it is found that the current operating status indicator light of the controller with the "Master Control" sticker is in slave control mode, but the operating indicator light of the controller shows a serious error or is not lit, while the current operating indicator light of the controller with the "Slave Control" sticker is in slave control mode, the impact of this situation is: the control system has a serious fault, the controller has stopped working, seriously affecting production operation, and production needs to be restored as soon as possible.

[0031] This invention is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

[0032] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. A method for identifying the master-slave working status of redundant controllers in a DCS system, characterized in that, Includes the following steps: 1) Design "Master Control" sticker and "Slave Control" sticker. The "Master Control" sticker is pasted on the controller card in the master control working state, and the "Slave Control" sticker is pasted on the controller card in the slave control working state. 2) Observe the matching relationship between the controller with the "Master" or "Slave" sticker and the corresponding controller operation status indicator light to determine whether the controller has undergone master-slave redundancy switching and to determine the type of fault that has occurred in the controller. 3) When it is found during the inspection that the current operating status indicator of the controller with the "Master" sticker is in the master operating status and the current operating status indicator of the controller with the "Slave" sticker is in the slave operating status, it can be directly determined that the controller group has not undergone master-slave redundancy switching and the controller is operating normally. 4) When it is found during the inspection that the controller with the "Master" or "Slave" sticker does not match the corresponding controller operation status indicator, it indicates that a master-slave redundancy switch has occurred between the controllers in the same group, and it is necessary to check the corresponding controller or control system for problems. When, during inspection, it is found that the current operating status indicator light of the controller with the "Master" sticker is in slave operating status, and the current operating status indicator light of the controller with the "Slave" sticker is in master operating status, and all other indicators of the controller are normal, it can be directly determined that the controller group has undergone master-slave redundancy switching. The controller card with the "Master" sticker has a fault or has experienced a power outage. The root cause of the switching should be investigated as soon as possible to eliminate potential system operation hazards. The impact of this situation is: it will not affect the field equipment or normal monitoring. When, during inspection, it is found that the current operating status indicator light of the controller with the "Master" sticker is in the master operating state, and all other operating indicator lights of the controller are normal, while the current operating indicator light of the controller with the "Slave" sticker is malfunctioning or not lit, it can be directly determined that the controller card with the "Slave" sticker is faulty or has lost power. This group of controllers has not undergone master-slave redundancy switching. The root cause of the slave controller problem should be investigated as soon as possible to eliminate potential system operation hazards. The impact of this situation is: it will not affect the field equipment and normal monitoring. When, during inspection, it is found that the current operating status indicator light of the controller with the "Master" sticker is in the master operating state, and other indicator lights of the same controller are normal, while the current operating status indicator light of the controller with the "Slave" sticker is in the master operating state, it can be directly determined that the controller group has not experienced a master-slave switch. The cause of the problem is: a fault in the redundant module or a problem with the redundant communication line, causing the controller to lose its redundant synchronization function. The impact of this situation is: it will not affect the field equipment or normal monitoring. When it is found during inspection that the current operating status indicator light of the controller with the "Master Control" sticker is in slave control mode, while the current operating status indicator light of the controller with the "Slave Control" sticker is in slave control mode, the impact of this situation is: the control system has suffered a serious malfunction, the controller has stopped working, seriously affecting production operations, and production needs to be restored as soon as possible; When, during an inspection, it is found that the current operating status indicator light of the controller with the "Master Control" sticker is in slave control mode, but the controller's operating indicator light shows a serious error or is not lit, while the current operating indicator light of the controller with the "Slave Control" sticker is in slave control mode, the impact of this situation is: the control system has experienced a serious malfunction, the controller has stopped working, seriously affecting production operations, and production needs to be restored as soon as possible.

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