A user login method and operation station based on local area network in DCS system

Abstract

The present invention relates to a user login method and an operation station based on a local area network in a DCS system. The DCS system in the local area network includes groups, each group includes an operation station or a control device that interacts with the operation station, and any operation station supports a single-point login mode. When any operation station in a group receives a login instruction triggered by a user, the operation station broadcasts login information to the group to which the operation station belongs, and the login information includes an identifier of the login instruction of the current user; if the operation station does not receive response information from other operation stations in the group that feed back login information within a first preset time period, the current user is allowed to log in, and successful login information of the login instruction is fed back to the current user; otherwise, the operation station interacts with the current user based on the response information fed back from other operation stations in the group received within the first preset time period to determine whether the current user is logged in. This method can achieve single login without relying on an authorization server, and is low-cost.

Description

Technical Field

[0001] The present invention relates to the technical field of single login, and in particular to a user login method and an operating station based on a local area network in a DCS system. Background Art

[0002] As businesses grow and digitalization increases, the need for clear responsibilities and rights within application systems within the enterprise ecosystem is increasing. User login is the most effective means of implementing permissions management. Different users are assigned different permissions, and once a user completes the login process, only the functions within that user's permissions are available. However, when the same account logs in to multiple clients, it can easily lead to confusion about responsibilities, conflicting commands, and system crashes. Therefore, restricting each client to a single login is often an important supplement to user login to fully ensure the uniqueness of user logins.

[0003] In the prior art, to avoid confusion in permissions caused by the same user logging in from multiple operation points, reliance on an authorization server is often adopted. When a user logs in, a login request is sent to the authorization server. If the authorization server detects that the current user is not logged in, it replies with a login success message and updates the login record table. If the authorization server detects that the current logged-in user is already logged in, it prompts the user that the user is logged in and asks whether to log in. The user confirms the login, and the server notifies the user that the logged-in client has logged off. It replies with a login success message and updates the login record table. However, because the entire interaction process relies on the authorization server, if the authorization server fails to provide services, the entire system will become unusable, and the establishment of an additional authorization server will increase the cost of use. This leads to system instability and high cost of use. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] In view of the above shortcomings and deficiencies of the prior art, the present invention provides a user login method and operation station based on a local area network in a DCS system, which solves the technical problems of unstable single login and high implementation cost in a local area network of a DCS system.

[0006] (2) Technical solution

[0007] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] In a first aspect, an embodiment of the present invention provides a user login method based on a local area network in a DCS system, wherein the DCS system in the local area network includes at least one group, each group includes multiple operation stations or control devices that interact with the operation stations, and any operation station in each group supports a single sign-on mode; the user login method includes:

[0009] S1. When any operation station in a group receives a login instruction triggered by a user, the operation station broadcasts login information to the group to which the operation station belongs, wherein the login information includes an identifier of the login instruction of the current user;

[0010] S2: If the operation station does not receive any response information from other operation stations in the group regarding the login information within a first preset time period, the current user is allowed to log in and a successful login instruction is fed back to the current user;

[0011] S3. Otherwise, the operation station interacts with the current user based on response information fed back by other operation stations in the group received within the first preset time period to determine whether the current user is logged in.

[0012] Optionally, the login information includes: current time, group information identifier, and identifier of the user to be logged in.

[0013] Optionally, the operation station in S2 does not receive any response information of the login information fed back by other operation stations in the group within a first preset time period, specifically including:

[0014] After receiving the login information, other operating stations in the group verify their own status information; the status information includes the current node time, the current group information identifier, the user's login identifier and the login status of the user corresponding to the login identifier;

[0015] If the current operation station does not have the current user's login status information, no response will be given.

[0016] Optionally, the operation station in S3 includes:

[0017] After receiving the login information, other operating stations in the group verify their own status information; the status information includes the current node time, the current group information identifier, the user's login identifier and the login status of the user corresponding to the login identifier;

[0018] If one of the other operation stations, operation station B, has the current user's login status information, a response message is fed back to operation station A that sent the login information in a unicast reply mode; the response message includes: the current operation station's identifier, random check information, and the user's login status;

[0019] After receiving the response information, the operation station A that sent the login information displays the response information to the user and displays a first selection button for prompting the user whether to continue logging in;

[0020] The operation station A that sent the login information receives the confirmation instruction of the user triggering the first selection button, and then sends an offline instruction to the operation station B in a unicast reply mode;

[0021] When the operation station A that sent the login information receives the offline success information fed back by the operation station B based on the offline instruction, it allows the current user to log in and feeds back the successful login information of the login instruction to the current user.

[0022] Optionally, the method further comprises: after receiving the response information, the operation station A that sent the login information displays the response information to the user and displays a second selection button, wherein the second selection button is used to prompt the user whether to log out;

[0023] The process ends when the operation station A that sent the login information receives a confirmation instruction from the user triggering the second selection button.

[0024] Optionally, the first preset time period is 2-5s.

[0025] Optionally, the operation stations included in the group are an operation station of a master device and an operation station of a slave device, and the master device and the slave device are devices in a redundant dual-network mode.

[0026] In a second aspect, an embodiment of the present invention provides an operation station, wherein the operation station is an operation station of a master device / slave device in a redundant dual-network mode and is located in a local area network; the operation station includes:

[0027] Sending module, receiving module and verification module;

[0028] The sending module is configured to, after receiving a user-triggered instruction, send login information in a broadcast format or send an offline notification in a unicast reply format to other operating stations in the same group according to the trigger instruction;

[0029] Alternatively, after receiving login information sent in broadcast form or offline notification sent in unicast reply form by other operation stations in the same group, the first feedback response information or the second feedback response information is sent; the first feedback response information includes the identifier of the current operation station, random verification information and the user's login status; the second feedback response information is offline success information;

[0030] The receiving module is configured to receive the login information, the first feedback response information, the second feedback response information, or an offline notification;

[0031] The verification module is used to verify its own status information after receiving login information sent by other operating stations in the same group; the own status information includes current node time, current group information identifier, user login identifier and user login status corresponding to the login identifier.

[0032] Optionally, the operation station further includes a clock synchronization module;

[0033] The clock synchronization module is used to synchronize the current time of all operating stations in the same local area network.

[0034] In a third aspect, an embodiment of the present invention provides a DCS system comprising a plurality of master and slave devices in a redundant dual-network mode, wherein all operation stations of the master and slave devices execute the user login method described in any one of the first aspects in a local area network;

[0035] All operation stations are not connected to the authorization server, and no authorization server is set up in the local area network.

[0036] (3) Beneficial effects

[0037] The present invention proposes a user login method based on a local area network in a DCS system, which realizes login information interaction between different operating stations in the same local area network through a network protocol without relying on an authorization server. Compared with the existing technology, it can realize multi-node single login without adding an authorization server, avoiding the node information interaction delay caused by the instability of the authorization server, and reducing the cost of implementing single login in the DCS system.

[0038] The user login method proposed in the present invention can realize instant interaction among multiple operation stations to realize single login within the same group operation environment, avoid multi-point login anomalies, and has a fast response speed, thereby improving time efficiency.

[0039] The present invention proposes an operation station, which includes a sending module, a receiving module, and a verification module. It can verify and feedback information packets between operation stations through a network protocol, thereby avoiding the problem of confusion of permissions in non-group operation environments. It has a simple structure and reduces the cost of implementing a single login in a DCS system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A flowchart of a method for user login based on a local area network in a DCS system provided by one embodiment of the present invention;

[0041] Figure 2 A schematic diagram of user direct login provided in yet another embodiment of the present invention;

[0042] Figure 3 A schematic diagram of user forced login provided in another embodiment of the present invention;

[0043] Figure 4 A schematic structural diagram of an operation station is provided for another embodiment of the present invention. DETAILED DESCRIPTION

[0044] To better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0045] With the development of informatization, the internal interaction requirements of application systems in enterprise ecosystems are increasing day by day. In order to increase the degree of informatization of enterprises, the present invention provides a user login method based on a local area network in a DCS system.

[0046] The DCS system includes multiple master-slave devices in redundant dual-network mode, and all operating stations of the master and slave devices execute any of the user login methods in the local area network; and all operating stations are not connected to the authorization server, and no authorization server is set in the local area network.

[0047] Specifically, the DCS system can deploy multiple operating environments, or configuration environments, within the same network. Each environment is independent and does not interfere with each other. Each operating environment has a unique group identifier, which can be a string identifier. The same group refers to the same DCS configuration environment. This identification is used to determine whether the operating station is in the same group. Each operating station carries the group identifier when sending a data packet. Upon receiving a data packet, the group is first verified. If the operating station node is not in the same group, no further verification is performed.

[0048] Furthermore, the present invention provides a user login method based on a local area network in a DCS system, wherein the DCS system in the local area network includes at least one group, each group includes multiple operation stations or control devices that interact with the operation stations, and any operation station in each group supports single sign-on.

[0049] Process such as Figure 1 As shown, Figure 1 A flowchart of a user login method based on a local area network in a DCS system provided in an embodiment of the present application mainly includes the following steps:

[0050] S1. When any operation station in a group receives a login instruction triggered by a user, the operation station broadcasts login information to the group to which the operation station belongs, and the login information includes the identifier of the login instruction of the current user; specifically, in some embodiments, the login information may include characteristic information such as the current time, group information identifier and / or identifier of the user to be logged in.

[0051] Specifically, the identifier of the user to be logged in may be the name of the user to be logged in, etc.

[0052] S2: If the operation station does not receive any response information from other operation stations in the group regarding the login information within a first preset time period, the current user is allowed to log in and a successful login instruction is fed back to the current user;

[0053] S3. Otherwise, the operation station interacts with the current user based on response information fed back by other operation stations in the group received within the first preset time period to determine whether the current user is logged in.

[0054] In this embodiment, the unicast and broadcast modes are both based on a custom UDP protocol, etc., and data information is transmitted in redundant dual networks.

[0055] The present invention provides a local area network (LAN)-based user login method for a DCS system. This method enables single-point login within a group in multiple configuration environments within the LAN. In the event of repeated logins, the user can cancel the login or force other operating stations to log off before completing the login. Groups do not interfere with each other. This method eliminates the need for an authorization server and incurs no additional costs. It offers high reliability, low implementation costs, and ease of use.

[0056] Specifically, in order to better explain the above solution, several specific embodiments will be described below.

[0057] Example 1

[0058] like Figure 2 As shown, Figure 2 The figure shows the process for direct login by an operator station user in this embodiment. Specifically, an operator logs in as user X in a DCS system implementing the above-mentioned technical solution. User X can be in the form of an account and password. After receiving the login instruction from user X triggered by the operator, operator station A broadcasts user X's login information to multiple nodes in its group, such as operator stations B and C. This login information may include the identifier of the current user X's login instruction.

[0059] After receiving the login information of user X, the operation stations B, C, etc. check their own status information to determine whether there is a logged-in user X. Specifically, the own status information may include the current node time, the current group information identifier, the user's login identifier, and the login status of the user corresponding to the login identifier, etc.

[0060] If the operation stations B, C, etc. verify their own status information and find no login status information of user X, they will not make any feedback and will not respond to the operation station A.

[0061] If operation station A does not receive any response information from other operation stations B, C, etc. in the group regarding user X's login information within the first preset time period, it determines that user X in the current group is not logged in, and the operation station directly logs in user X.

[0062] The first preset time can be 2s-5s. In this embodiment, taking into account the actual situation, the first preset time is preferably 2s to reduce time cost and improve efficiency. In other embodiments, after adjustment according to actual needs, the preset time can be extended to 5s, etc. The actual preset time should be adjusted according to actual conditions and is not limited here.

[0063] In practical applications, it can be specifically:

[0064] Each operation station is equipped with or connected to an interactive device, such as an electronic interactive screen. The operator only needs to enter user X and click to log in. If there is no response information within 2 seconds, user X is successfully logged in. The operation is simple, time-saving and efficient.

[0065] Example 2

[0066] In other embodiments, in order to reduce the number of users and reduce the pressure of user account management, it is often the case that multiple operators share one account. In this case, there will be other operating stations logging in as user X.

[0067] like Figure 3 As shown, Figure 3 A schematic diagram of forced login of an operation station user provided by an embodiment of the present invention is shown.

[0068] After the operator clicks "Login User X" on console A, the login status of user X on console A is "Logging in", which means the login process has been triggered but the login is not completed.

[0069] After receiving the login instruction of user X triggered by the operator, operation station A broadcasts the login information of user X to multiple nodes in the group, such as other operation stations B and C. The login information may include the identifier of the current login instruction of user X.

[0070] After receiving the login information of user X, the operation stations B, C, etc. check their own status information to determine whether there is a logged-in user X. Specifically, the own status information may include the current node time, the current group information identifier, the user's login identifier, and the login status of the user corresponding to the login identifier, etc.

[0071] If operation station B verifies its own status information and determines that operation station B has login status information of the current user X, that is, user X has logged in at operation station B, then operation station B uses a unicast reply method to feedback response information to operation station A that sent the login information. The feedback response information may include the current operation station identifier, random verification information, and the login status of user X. In some embodiments, the random verification information may be a randomly generated identifier or a random number.

[0072] After receiving the response information, the operation station A that sent the login information displays the response information to the user and displays a first selection button, where the first selection button is used to prompt the user whether to continue logging in.

[0073] When the operation station A that sent the login information receives the confirmation instruction of the user triggering the first selection button, it sends a logoff instruction to the operation station B in a unicast reply manner; the logoff instruction includes the random verification information.

[0074] When the operation station A that sent the login information receives the logout success information fed back by the operation station B based on the logout instruction, the operation station A allows the current user X to log in and feeds back the successful login information of the login instruction to the current user.

[0075] Alternatively, the operation station A that sent the login information receives the response information and displays the response information to the user, and displays a second selection button for prompting the user whether to log out;

[0076] When the operation station A that sent the login information receives the confirmation instruction of the user triggering the second selection button, the process ends and the login is logged out.

[0077] In actual applications, to better adapt and increase operator compatibility, some embodiments also provide an option to refuse to log out the current user. That is, after receiving a logout instruction from operator station A, operator station B pops up a prompt message and provides a third selection button and a fourth selection button. The third selection button is used to prompt the user whether to continue logging in; the fourth selection button is used to prompt the user whether to log out.

[0078] If the operator triggers the third selection button and chooses to confirm the logout, a unicast reply is sent to the operator station A indicating that the logout is successful. After receiving the reply message, the operator station A completes the login. Otherwise, the operator station A is logged out.

[0079] In actual applications, it is possible that multiple operators may log in to user A simultaneously at different operating stations in the same group. To avoid this situation and the resulting system instability and crash, in some embodiments, the DCS system has clock synchronization and can provide clock synchronization functions to ensure that the time of each operating station in the same group is consistent, and the operator who sent the login information earlier will be logged in first.

[0080] For example, in one embodiment, an operator logs in to user X through operation stations A and B at the same time (with a small time interval). The operation station parses the current time information in the login request data, verifies the local attempted login time and the time in the data packet, and after verification, determines that the time of operation station B is earlier. Operation node B replies to operation node A with a unicast message, which is the attempted login information carrying the node information of operation station B. Operation node A receives the message and pops up a prompt box "There is currently an operation node logging in to user X, please try again later!", with only an OK button. Click OK to exit this login, and operation station A does not provide any feedback.

[0081] In some other embodiments, in order to facilitate the management of the system, an observer user is provided, who has no operating authority and can only view the current status within the scope of authority. It can also be set that only one user can log in to any console at the same time.

[0082] The above prompt information is an implementation method of an embodiment. There are many possible prompt information, which are written according to actual conditions and are not limited here.

[0083] The user login method provided in the above embodiment can solve various situations that may occur when a user logs in, without relying on an authorization server, and solves the problem of system crashes caused by unstable authorization servers. It can also reliably ensure a single login for users, and realize clear rights and responsibilities, clear commands, and clear management.

[0084] The present invention also provides an operation station, which is an operation station of a master device / slave device in a redundant dual-network mode and is located in a local area network.

[0085] The operation station may include a sending module, a receiving module, a verification module, and the like.

[0086] The sending module is used to send login information in a broadcast form or send offline notification in a unicast reply form to other operating stations in the same group according to the triggering instruction after receiving the instruction triggered by the user.

[0087] Alternatively, after receiving login information sent in broadcast form / offline notification sent in unicast reply form by other operation stations in the same group, the first feedback response information / second feedback response information is sent; the first feedback response information may include the identifier of the current operation station, random verification information and the user's login status; the second feedback response information is offline success information.

[0088] The receiving module is configured to receive the login information, the first feedback response information, the second feedback response information, or an offline notification.

[0089] The verification module is used to verify its own status information after receiving login information sent by other operating stations in the same group; the own status information includes current node time, current group information identifier, user login identifier and user login status corresponding to the login identifier, etc.

[0090] In some other embodiments, the operation station may further include a clock synchronization module;

[0091] The clock synchronization module is used to synchronize the current time of all operating stations in the same local area network, maintaining the same time among all operating stations in the group.

[0092] For example, operation station A and operation stations B, C, etc. are operation stations of master / slave devices in a redundant dual-network mode, and the operation stations are located in a local area network.

[0093] After receiving the user-triggered login instruction of user X, the sending module of operation station A broadcasts the login information to other operation stations in the same group, such as operation stations B and C.

[0094] After receiving the login information, the verification modules of the operation stations B, C, etc. verify their own status information.

[0095] If user X is logged in at operation station B, the sending module of operation station B sends a first feedback response message; the receiving module of operation station A receives the first feedback response message, and its sending module sends an offline notification to operation station B.

[0096] After the operation station B goes offline successfully, the second feedback response information is sent to the operation station A through the sending module.

[0097] In actual applications, there are other similar processes for receiving or sending information, which are not described in detail here.

[0098] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0099] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0100] In the description of this specification, the terms "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example and included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are mutually inconsistent.

[0101] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A user login method based on a local area network in a DCS system, characterized in that: The DCS system in the local area network includes at least one group, each group includes multiple operation stations or control devices that interact with the operation stations, and any operation station in each group supports single sign-on mode; The user login method includes: S1. When any operation station in a group receives a login instruction triggered by a user, the operation station broadcasts login information to the group to which the operation station belongs, wherein the login information includes an identifier of the login instruction of the current user; S2: If the operation station does not receive any response information from other operation stations in the group regarding the login information within a first preset time period, the current user is allowed to log in and a successful login instruction is fed back to the current user; S3. Otherwise, the operation station interacts with the current user based on response information fed back by other operation stations in the group received within the first preset time period to determine whether the current user is logged in.

2. The user login method according to claim 1, wherein: The login information includes: current time, group information identifier, and identifier of the user to be logged in.

3. The user login method according to claim 2, wherein: The operation station in S2 does not receive any response information of the login information fed back by other operation stations in the group within the first preset time period, specifically including: After receiving the login information, other operating stations in the group verify their own status information; the status information includes the current node time, the current group information identifier, the user's login identifier and the login status of the user corresponding to the login identifier; If the current operation station does not have the current user's login status information, no response will be given.

4. The user login method according to claim 3, wherein: The operation station in S3 receives response information fed back by other operation stations in the group within the first preset time period, including: After receiving the login information, other operating stations in the group verify their own status information; the status information includes the current node time, the current group information identifier, the user's login identifier and the login status of the user corresponding to the login identifier; If one of the other operation stations, operation station B, has the current user's login status information, a response message is fed back to operation station A that sent the login information in a unicast reply mode; the response message includes: the current operation station's identifier, random check information, and the user's login status; After receiving the response information, the operation station A that sent the login information displays the response information to the user and displays a first selection button for prompting the user whether to continue logging in; The operation station A that sent the login information receives the confirmation instruction of the user triggering the first selection button, and then sends an offline instruction to the operation station B in a unicast reply mode; When the operation station A that sent the login information receives the offline success information fed back by the operation station B based on the offline instruction, it allows the current user to log in and feeds back the successful login information of the login instruction to the current user.

5. The user login method according to claim 4, wherein: Also includes: After receiving the response information, the operation station A that sent the login information displays the response information to the user and displays a second selection button for prompting the user whether to log out; The process ends when the operation station A that sent the login information receives a confirmation instruction from the user triggering the second selection button.

6. The user login method according to claim 4, wherein: The first preset time period is 2-5s.

7. The user login method according to claim 1, wherein: The operation stations included in the group are the operation station of the master device and the operation station of the slave device, and the master device and the slave device are devices in redundant dual-network mode.

8. An operating station, characterized in that: The operation station is an operation station of a master device or a slave device in a redundant dual-network mode, and the operation station is located in a local area network; The operating station includes: Sending module, receiving module and verification module; The sending module is configured to, after receiving a user-triggered instruction, send login information in a broadcast format or send an offline notification in a unicast reply format to other operating stations in the same group according to the triggering instruction; Alternatively, after receiving login information sent in broadcast form or offline notification sent in unicast reply form by other operation stations in the same group, the first feedback response information or the second feedback response information is sent; the first feedback response information includes the identifier of the current operation station, random verification information and the user's login status; the second feedback response information is offline success information; The receiving module is configured to receive the login information, the first feedback response information, the second feedback response information, or an offline notification; The verification module is used to verify its own status information after receiving login information sent by other operating stations in the same group; the own status information includes current node time, current group information identifier, user login identifier and user login status corresponding to the login identifier.

9. The operating station according to claim 8, characterized in that The operating station also includes a clock synchronization module; The clock synchronization module is used to synchronize the current time of all operating stations in the same local area network.

10. A DCS system, characterized in that: It includes multiple master and slave devices in redundant dual-network mode, and all operation stations of the master and slave devices execute the user login method according to any one of claims 1 to 7 in a local area network; All operation stations are not connected to the authorization server, and no authorization server is set up in the local area network.

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