An industrial control system

Abstract

This utility model discloses an industrial control system, relating to the field of communication technology. The system includes: at least one control master station, at least one first slave station, and at least one second slave station. The first slave station communicates wirelessly, and the second slave station communicates via wired communication. The control master station communicates via wired and / or wireless communication. The wired control master station is connected to the second slave station via a wired connection; the wireless control master station is connected to the first slave station via a wireless connection. This hybrid wired and wireless networking method is suitable for master-slave control systems using industrial protocols, achieving a flexible, reliable, and scalable device interconnection structure. By integrating wired and wireless communication, the industrial control system ensures reliability and real-time performance while also offering deployment flexibility and cost-effectiveness.

Description

Technical Field

[0001] This utility model relates to the field of communication technology, and in particular to an industrial control system. Background Technology

[0002] In traditional industrial control systems, bus-type or real-time Ethernet protocols such as EtherCAT, CANopen, or Modbus primarily transmit control commands and status feedback via wired connections.

[0003] However, wired networking has limitations in the following application scenarios: wide distribution area, high cabling cost, and scattered installation (such as remote I / O and remote sensors); remote and mobile nodes (such as AGVs and mobile sensors); and production environments with high requirements for flexibility and reconfigurability. Summary of the Invention

[0004] This invention provides an industrial control system to achieve the integration of wired and wireless communication.

[0005] According to a first aspect of the present invention, an industrial control system is provided, comprising: at least one control master station, at least one first slave station and at least one second slave station, wherein the first slave station communicates via wireless communication and the second slave station communicates via wired communication.

[0006] The communication method of the control master station is wired communication and / or wireless communication;

[0007] The control master station and the second slave station are connected via a wired connection.

[0008] The control master station and the first slave station are connected wirelessly via wireless communication.

[0009] Furthermore, the system also includes a conversion module, which is connected to the control master station;

[0010] The conversion module is used to provide wired and wireless communication for the control master station.

[0011] Furthermore, the conversion module is a network intermediate device.

[0012] The network intermediate device converts wired communication to wireless communication, the control master station uses wired communication and is connected to the network intermediate device via a wired connection, the network intermediate device is connected to the first slave station via a wireless connection, and the network intermediate device is connected to the second slave station via a wired connection.

[0013] The network intermediate device converts wireless communication to wired communication, the control master station uses wireless communication and connects to the network intermediate device wirelessly, the network intermediate device connects to the second slave station via a wired connection, and the network intermediate device connects to the first slave station wirelessly.

[0014] Furthermore, the conversion module is a wireless communication module, which is located in the second slave station. The control master station uses wired communication and is connected to the second slave station equipped with the wireless communication module via a wired connection. The second slave station equipped with the wireless communication module is connected to other second slave stations via a wired connection and is wirelessly connected to other first slave stations via the wireless communication module.

[0015] Furthermore, the conversion module is a wired communication module, which is located in the first slave station. The control master station is wirelessly connected and wirelessly connected to the first slave station equipped with the wired communication module. The first slave station equipped with the wired communication module is connected to the second slave station via a wired connection.

[0016] Furthermore, the control master station, which uses both wired and wireless communication, connects to other control master stations using wired communication via a wired connection and to other control master stations using wireless communication via a wireless connection.

[0017] Furthermore, wired connections can be established via wired topology, wireless connections via wireless topology, and hybrid connections using a combination of wired and wireless topology.

[0018] Furthermore, the device types of the first slave station and the second slave station are input / output I / O terminals, actuators, drivers, or sensors.

[0019] The technical solution of this utility model embodiment includes a system comprising: at least one control master station, at least one first slave station, and at least one second slave station. The first slave station communicates wirelessly, and the second slave station communicates via wired communication. The control master station communicates via wired and / or wireless communication. The wired control master station is connected to the second slave station via a wired connection, and the wireless control master station is connected to the first slave station via a wireless connection. This hybrid wired and wireless networking method is suitable for master-slave control systems based on industrial protocols, achieving a flexible, reliable, and scalable device interconnection structure. By integrating wired and wireless communication, the industrial control system ensures reliability and real-time performance while also offering deployment flexibility and cost-effectiveness.

[0020] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an industrial control system according to Embodiment 1 of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of an industrial control system including a network intermediate device according to Embodiment 1 of the present utility model;

[0024] Figure 3 This is another structural schematic diagram of an industrial control system including a network intermediate device according to Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram of an industrial control system including a wireless communication module according to Embodiment 1 of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of an industrial control system including a wired communication module according to Embodiment 1 of this utility model;

[0027] Figure 6 This is a structural diagram of multiple control master stations in an industrial control system according to Embodiment 1 of this utility model. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Example 1

[0031] Figure 1 This is a schematic diagram of an industrial control system according to Embodiment 1 of the present invention. This embodiment is applicable to hybrid wired and wireless networking scenarios in industrial control systems, such as... Figure 1 As shown, the system includes: at least one control master station 1, at least one first slave station 2, and at least one second slave station 3.

[0032] The first slave station 2 communicates wirelessly, and the second slave station 3 communicates via wired communication; the control master station 1 communicates via wired communication and / or wireless communication; the control master station 1 communicating via wired communication is connected to the second slave station 3 via a wired connection; the control master station 1 communicating via wireless communication is connected to the first slave station 2 via a wireless connection.

[0033] In this embodiment, the control master station 1 can be understood as the core central device in the industrial control system, which is responsible for initiating communication requests, centrally managing data interaction, executing logic control and monitoring the overall process. It can establish connections with slave devices to achieve centralized control and efficient collaboration of the industrial site.

[0034] In this embodiment, the first slave station 2 can be understood as a slave device using wireless communication, such as a PLC slave station, a wireless distributed I / O module, and a wireless actuator, and also includes remote and mobile devices (such as AGV vehicles and mobile sensors). The wireless communication method can include any method that enables wireless communication, such as Wi-Fi, Bluetooth, and mobile communication; this is not limited herein. The second slave station 3 can be understood as a slave device using wired communication, such as a driver and a sensor. The wired communication method can include any method that enables wired communication, such as Ethernet, serial communication, and fieldbus communication; this is not limited herein.

[0035] Furthermore, the device types of the first slave station 2 and the second slave station 3 are input / output I / O terminals, actuators, drivers, or sensors.

[0036] This includes wired topology for wired connections, wireless topology for wireless connections, and hybrid topology for wired and wireless connections. Wired topologies can include bus, star, ring, tree, and hybrid topologies. Wireless topologies can include star and mesh topologies. Hybrid topologies can include hierarchical integration and partitioned layouts. The topology can be determined according to the actual situation. For example, a hierarchical hybrid topology can be used, with the first layer being wireless communication and the second layer being wired communication. In this case, the first layer could be a star wireless topology for wireless connections, and the second layer could be a ring wired topology for wired connections.

[0037] Specifically, the industrial control system includes at least one control master station 1. If there are multiple control master stations 1, connections can be established between them through corresponding wired or wireless connection methods. Each control master station 1 can use wired or wireless communication, or it can be a dual control master station 1, supporting both wired and wireless communication simultaneously. Wired control master stations 1 can connect to each other via wired connections, and wireless control master stations 1 can connect to each other via wireless connections. A dual control master station 1 can connect to both types of control master stations simultaneously: via wired connection and via wireless connection. Each control master station 1 can then connect to its corresponding slave station according to its configured communication method. In this configuration, the first slave station 2 communicates wirelessly, while the second slave station 3 communicates via wired communication. The wired communication control master station 1 is connected to the second slave station 3 via a wired connection. The wireless communication control master station 1 is connected to the first slave station 2 wirelessly. The dual-communication control master station 1 can simultaneously connect to both the first slave station 2 and the second slave station 3, and can perform wired and wireless connections in a hybrid topology. The first slave station 2 can wirelessly connect to other first slave stations 2 via a set wireless topology, and the second slave station 3 can wiredly connect to other second slave stations 3 via a set wired topology.

[0038] The technical solution of this utility model embodiment includes a system comprising: at least one control master station 1, at least one first slave station 2, and at least one second slave station 3. The first slave station 2 communicates wirelessly, and the second slave station 3 communicates via wired communication. The control master station 1 communicates via wired and / or wireless communication. The wired control master station 1 and the second slave station 3 are connected via a wired connection; the wireless control master station 1 and the first slave station 2 are connected via a wireless connection. This hybrid wired and wireless networking method is suitable for master-slave control systems based on industrial protocols, achieving a flexible, reliable, and scalable device interconnection structure. By integrating wired and wireless communication, the industrial control system ensures reliability and real-time performance while also offering deployment flexibility and cost-effectiveness.

[0039] Furthermore, the system also includes: a conversion module connected to the control master station 1; the conversion module is used to provide wired and wireless communication for the control master station 1.

[0040] It is known that, in some scenarios, there is a need for both the first slave station 2 and the second slave station 3 to connect simultaneously to the control master station 1. To enable the control master station 1 to connect using both communication methods, a conversion module can be set up to connect to the control master station 1. The conversion module can convert the current communication method of the control master station 1 to another communication method. For example, it can convert the wired communication mode of the control master station 1 to the wireless communication mode, and vice versa, thus providing both wired and wireless communication for the control master station 1 simultaneously.

[0041] Furthermore, the conversion module is a network intermediate device 4.

[0042] The network intermediate device 4 converts wired communication to wireless communication, the control master station 1 uses wired communication and is connected to the network intermediate device 4 via a wired connection, the network intermediate device 4 is connected to the first slave station 2 via a wireless connection, and the network intermediate device 4 is connected to the second slave station 3 via a wired connection.

[0043] In this embodiment, the network intermediate device 4 can be understood as a key device responsible for data forwarding in the transmission network. It provides interfaces for different communication methods such as Ethernet ports, serial ports, and 4G / 5G modules, supports communication protocols such as TCP / IP and Modbus, and can connect to various industrial devices such as PLCs, sensors, and robots. For example, it can be a routing node, gateway, AP (wireless access point), or a module integrating similar functions.

[0044] Specifically, when the control master station 1 is in wired communication mode, the conversion module is a network intermediate device 4 that converts wired communication to wireless communication. The network intermediate device 4 contains wired and wireless interfaces. It is connected to the control master station 1 and the second slave station 3 in wired communication mode through the wired interface. Each second slave station 3 can be wired according to the wired topology and connected to the first slave station 2 in wireless mode. Each first slave station 2 can be wirelessly connected according to the wireless topology.

[0045] For example, a specific system diagram can be used to illustrate the system where network intermediate device 4 converts wired communication to wireless communication. Figure 2 This is a schematic diagram of the structure of an industrial control system including a network intermediate device 4, as provided in Embodiment 1 of this utility model. Figure 2 As shown, the control master station 1 uses wired communication and is connected to the network intermediate device 4 via Ethernet. The network intermediate device 4 is a wired-to-wireless intermediate device. It is connected to the second slave station (driver 1) 3 via a wired connection. The second slave station (driver 1) 3 is connected to the second slave station 3 (driver 2). In this example, the second slave station 3 is connected in a serial wired topology and sequentially connected to the second slave station (driver n) 3. The second slave station (driver n) 3 is then connected to the second slave station (I / O device 1) 3 via a serial connection. The wired-to-wireless intermediate device 4 is wirelessly connected to the first slave station (driver 1) 2 through the first slave station (driver n) 2 and to the first slave station (I / O device 1) 2 through the first slave station (I / O device n) 2. The network intermediate device 4 can parse / forward wired data frames; split them into corresponding data for wireless and wired slave stations; and send them to the slave devices in the appropriate manner. Return data is also aggregated and encapsulated according to the path and returned. This system networking method supports a unified control master station 1 architecture and can flexibly adapt to slave stations with different communication types.

[0046] The network intermediate device 4 is a wireless communication to wired communication device, the control master station 1 is a wireless communication device and is connected to the network intermediate device 4 wirelessly, the network intermediate device 4 is connected to the second slave station 3 via a wired connection, and the network intermediate device 4 is connected to the first slave station 2 wirelessly.

[0047] Specifically, when the control master station 1 is in wireless communication mode, the network intermediate device 4 converts wireless communication to wired communication and connects to the wireless interface of the network intermediate device 4 wirelessly. The network intermediate device 4 can be connected to the second slave station 3 via a wired interface, and the wired connected second slave stations 3 can be connected in a wired topology. The network intermediate device 4 can also be connected to the first slave station 2 wirelessly, and the wirelessly connected first slave stations 2 can be connected in a wireless topology.

[0048] For example, a specific system diagram can be used to illustrate the system where network intermediate device 4 converts wireless communication into wired communication. Figure 3 This is another structural diagram of an industrial control system including a network intermediate device 4, provided in Embodiment 1 of the present invention, as shown below. Figure 3 As shown, the control master station 1 uses wireless communication and connects to the network intermediate device 4 via wireless communication. The network intermediate device 4 is a wireless-to-wired network intermediate device. This network intermediate device 4 is connected to the second slave station (driver 1) 3 via a wired connection. The second slave station (driver 1) 3 is connected to the second slave station 3 (driver 2). In this example, the second slave station 3 is connected in a serial wired topology and sequentially connected to the second slave station (driver n) 3. The second slave station (driver n) 3 is then connected to the second slave station (I / O device 1) 3 in series. The control master station can wirelessly connect to the first slave station (driver 1) 2 to the first slave station (driver n) 2 and the first slave station (I / O device 1) 2 to the first slave station (I / O device n) 2. The network intermediate device 4 can split the received wireless data frames into appropriate wired and wireless slave station data frames. The data returned by the slave stations is also aggregated and routed according to the protocol. This system networking method allows the main station to be completely wireless, making it suitable for scenarios involving flexible device deployment or remote control.

[0049] Furthermore, the conversion module is a wireless communication module, which is located in the second slave station 3. The control master station 1 uses wired communication and is connected to the second slave station 3 equipped with the wireless communication module via a wired connection. The second slave station 3 equipped with the wireless communication module is connected to other second slave stations 3 via a wired connection and is wirelessly connected to other first slave stations 2 via the wireless communication module.

[0050] In this embodiment, the wireless communication module can be understood as an electronic device that transmits and receives data via wireless communication.

[0051] Specifically, when the control master station 1 uses wired communication, it can connect to the second slave station 3 equipped with a wireless communication module via a wired connection. The wireless communication module can be installed in the second slave station 3 to provide wireless communication functionality for the second slave station 3, which can only perform wired communication connections. The control master station 1 connects to the second slave station 3 equipped with the wireless communication module via a wired connection, and the second slave station 1 connects to other second slave stations 3 via a wired connection. The wired connection can be a wired topology connection. The control master station 1 also connects to other first slave stations 2 wirelessly via the wireless communication module. The wireless connection can be the aforementioned wireless topology connection.

[0052] For example, a system that converts a conversion module into a wireless communication module can be illustrated using a specific system diagram. Figure 4 This is a schematic diagram of an industrial control system including a wireless communication module, provided in Embodiment 1 of the present invention. Figure 4 As shown, the wireless communication module is located in the second slave station (driver 1) 3. The master station 1 uses wired communication and is connected to the second slave station (driver 1) 3 with the wireless communication module via wired communication. The second slave station (driver 1) 3 is connected to the second slave station 3 (driver 2), and so on, in series to the second slave station (driver n) 3. The second slave station (driver n) 3 is connected to the second slave station (I / O device 1) 3 with the wireless communication module. The second slave station (I / O device 1) 3 with the wireless communication module is connected in series with the second slave station 3 (I / O device 2) to the second slave station (I / O device n) 3 via wired connection. In this example, only series connection is used as a wired topology, but star topology and other topologies are also possible. A second slave station (driver 1) 3, equipped with a wireless communication module, connects wirelessly to the first slave stations (driver 1) 2 through 2, respectively. Similarly, a second slave station (I / O device 1) 3, also equipped with a wireless communication module, connects wirelessly to the first slave stations (I / O device 1) 2 through 2, respectively. Integrating a wireless communication module into existing wired slave devices enables them to communicate with wireless slave devices. The wired slave station can then wirelessly transmit control signals to other wireless slave stations. This solution establishes a pathway between wired and wireless networks through module-level integration. It is suitable for upgrading existing equipment to a hybrid networking environment, offering advantages such as low cost, ease of upgrades, and no need to replace the existing wired system.

[0053] Furthermore, the conversion module is a wired communication module, which is located in the first slave station 2. The control master station 1 is wirelessly connected and wirelessly connected to the first slave station 2, which is equipped with the wired communication module. The first slave station 2, which is equipped with the wired communication module, is connected to the second slave station 3 via a wired connection.

[0054] In this embodiment, the wired communication module can be understood as a module that implements wired communication through a wired expansion interface.

[0055] Specifically, when the control master station 1 is in wireless communication mode, the conversion module is a wired communication module, which is set in the first slave station 2 to provide wired communication functionality for the first slave station 2, which can only perform wireless communication. The control master station 1 can connect to multiple first slave stations 2 wirelessly, and the first slave station 2 equipped with the wired communication module can be wired to the second slave station 3, thus forming a chain control structure from wireless master station to wireless slave station to wired slave station.

[0056] For example, a specific system diagram can be used to illustrate a system where the conversion module is converted into a wired communication module. Figure 5 This is a schematic diagram of the structure of an industrial control system including a wired communication module, provided in Embodiment 1 of this utility model. Figure 5 As shown in the figure (not explicitly illustrated), the wired communication module is located in the first slave station (driver 1) 2 to the first slave station (driver n) 2 and the first slave station (I / O device 1) 2 to the first slave station (I / O device n) 2 via wired connections. The control master station 1 is connected wirelessly to the first slave station (driver 1) 2 to the first slave station (driver n) 2 and the first slave station (I / O device 1) 2 to the first slave station (I / O device n) 2 via wireless communication. Each of the first slave stations 2 can establish a wired connection with the second slave station 3 via the wired communication module. Integrating the wireless communication module into existing wired slave station devices enables them to communicate with wireless slave station devices. The wired slave station can then send control signals to other wireless slave stations via wireless connection. This scheme, by setting a wired expansion interface (wired communication module) at the wireless node (first slave station 2), can further connect conventional wired slave station devices, such as drivers and sensors, thereby forming a chain control structure from wireless master station to wireless slave station to wired slave station. It supports large-scale, distributed control, making it suitable for remote areas or distributed sites.

[0057] Furthermore, the control master station 1, which uses both wired and wireless communication, is connected to other control master stations 1 using wired communication via a wired connection, and to other control master stations 1 using wireless communication via a wireless connection.

[0058] Specifically, when there are multiple control master stations 1, the dual control master station 1 with wired and wireless communication methods can connect to both the wired and wireless master stations simultaneously. Then, the control master station 1 can connect to other slave stations through the methods provided in the above scheme. The topology of each control master station 1 can adopt the above wired topology, wireless topology, or hybrid topology.

[0059] For example, a system containing multiple control master stations 1 can be shown using a specific system diagram. Figure 6 This is a schematic diagram of the structure of multiple control master stations 1 in an industrial control system provided in Embodiment 1 of this utility model, as shown below. Figure 6 As shown, a series configuration can be used as an example. A dual control master station 1, which includes both wireless and wired communication methods, can be used. The wireless control master station 1 in the dual control master station 1 can be connected in series with other wireless control master stations 1, and the wired control master station 1 in the dual control master station 1 can be connected in series with other wired master stations. This supports wide-range and distributed control, multiple devices, and is suitable for communication between remote areas or distributed sites.

Claims

1. An industrial control system, characterized by include: The system includes at least one master control station, at least one first slave station, and at least one second slave station, wherein the first slave station communicates wirelessly and the second slave station communicates via wired communication. The communication method of the control master station is wired communication and / or wireless communication; The control master station and the second slave station are connected via a wired connection. The control master station and the first slave station are connected wirelessly via wireless communication.

2. The system of claim 1, wherein, Also includes: A conversion module, which is connected to the control master station; The conversion module is used to provide wired and wireless communication for the control master station.

3. The system of claim 2, wherein, The conversion module is a network intermediate device.

4. The system of claim 3, wherein, The network intermediate device converts wired communication to wireless communication, the control master station uses wired communication and is connected to the network intermediate device via a wired connection, the network intermediate device is connected to the first slave station via a wireless connection, and the network intermediate device is connected to the second slave station via a wired connection.

5. The system of claim 3, wherein, The network intermediate device converts wireless communication to wired communication. The control master station uses wireless communication and connects to the network intermediate device wirelessly. The network intermediate device connects to the second slave station via a wired connection and connects to the first slave station wirelessly.

6. The system of claim 2, wherein, The conversion module is a wireless communication module, which is located in the second slave station. The control master station uses wired communication and is connected to the second slave station equipped with the wireless communication module via a wired connection. The second slave station equipped with the wireless communication module is connected to other second slave stations via a wired connection and is wirelessly connected to other first slave stations via the wireless communication module.

7. The system of claim 2, wherein, The conversion module is a wired communication module, which is located in the first slave station. The control master station is wireless and is connected to the first slave station equipped with the wired communication module wirelessly. The first slave station equipped with the wired communication module is connected to the second slave station via a wired connection.

8. The system of claim 2, wherein, The control master station uses both wired and wireless communication methods. It connects to other control master stations using wired communication via a wired connection and to other control master stations using wireless communication via a wireless connection.

9. The system of any one of claims 1-8, wherein, Wired connections can be established via wired topology, wireless connections via wireless topology, and hybrid connections using a combination of wired and wireless topology.

10. The system of claim 1, wherein, The device types of the first slave station and the second slave station are input / output I / O terminals, actuators, drivers, or sensors.

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