Digital welding power supply control device based on Can-open protocol

Abstract

The utility model relates to the technical field of pipeline welding equipment, in particular to a digital welding power supply control device based on a Can-open protocol. The device comprises a master control module, a coupling module, a Can-open master station module, a Can-open slave station module and a digital welding power source. Wherein the main control module is connected with the coupling module; the coupling module is connected with the Can-open master station module; the Can-open master station module is in communication connection with the Can-open slave station module on the basis of the Can-open protocol; and the Can-open slave station module is connected with the digital welding power supply. Through the arrangement, the device provided by the utility model remotely takes over the welding power supply through a communication mode of converting an RS-485 protocol into a Can-open protocol so as to realize real-time control and data acquisition of the welding process.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding equipment, in particular to a digital welding power supply control device based on the Can-open protocol. Background Technique

[0002] As a key device in welding robots and intelligent welding technologies, the intelligent application of digital welding power supplies has become the main research direction. The convenient bus-type network communication interface makes it easy to realize the intelligent integration of the welding production process with other auxiliary devices. In the all-position pipeline welding system, the pipeline welding robot needs to control the welding power supply to start welding with the welding parameters at that position according to the pipeline spatial position measured by the inclination sensor to ensure the continuous change of the welding process parameters. To meet the process requirements of the all-position pipeline welding system and realize the computer-integrated control of the pipeline welding process, based on the analysis of the communication interface of the welding power supply, a master-slave Can (Controller Area Network) bus network control welding system with the Can-open communication module of the welding power supply as the slave station is constructed. The real-time control and data acquisition of the welding process are realized by remotely taking over the welding power supply.

[0003] In the past, welding communication systems usually used the RS-232 protocol for communication, which has slow transmission speed, poor scalability, lack of real-time performance, and complex configuration and maintenance.

[0004] Therefore, it is necessary to invent a welding power supply control system with fast and stable communication to meet the process requirements of the intelligent all-position welding system where the pipeline spatial position matches the welding parameters. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a digital welding power supply control device based on the Can-open protocol to solve problems such as unstable communication, slow speed, lack of real-time performance, and poor scalability. The many technical effects that can be produced by the preferred technical solutions provided by the utility model are described in detail below.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A digital welding power supply control device based on the Can-open protocol includes a main control module, a coupling module, a Can-open master station module, a Can-open slave station module, and a digital welding power supply;

[0008] Among them, the main control module is connected to the coupling module;

[0009] The coupling module is connected to the Can-open master station module;

[0010] The Can-open master station module and the Can-open slave station module are communicatively connected based on the Can-open protocol.

[0011] The Can-open slave station module is connected to the digital welding power source.

[0012] In some embodiments, the main control module is an industrial PC.

[0013] In some embodiments, the coupling module is an Ethercat coupler with the model number EK1100.

[0014] In some embodiments, the Can-open master station module includes a communication power supply module and a Can-open master station terminal module;

[0015] The communication power supply module and the Can-open master station terminal module are connected by snap-in hardware terminals;

[0016] The Can-open slave station module includes a coupling module, a power supply module, an input module, an output module, a serial port module, and a terminal module;

[0017] The Can-open master station and the Can-open slave station are connected for communication by Can twisted pair.

[0018] In some embodiments, the industrial PC is connected to the Ethercat coupler by a network cable to realize the communication between the main control module and the coupling module.

[0019] In some embodiments, the digital welding power source includes: a filtering unit, an internal control module of the welding power source, a wire feeder module, a display panel module, and an operation panel module;

[0020] The internal control module of the welding power source is connected to the Can-open slave station module through the filtering unit;

[0021] The wire feeder module, the display panel module, and the operation panel module are respectively connected to the internal control module of the welding power source through an RS-485 serial interface.

[0022] In some embodiments, the filtering unit is connected to the serial port module in the Can-open slave station module and is also connected to the internal control module of the welding power source through an RS-485 bus, and is used to realize the conversion of data between the RS-485 protocol and the Can-open protocol.

[0023] The beneficial effects of the present utility model are as follows:

[0024] The present utility model provides good real-time performance and reliability. The Can-open protocol is a high-level communication protocol based on the Can bus, featuring fast data transmission capabilities and low latency characteristics. This enables the system to respond to sensor data and execute control commands in real time, which is crucial for precise control during the welding process.

[0025] The present utility model supports flexible network topologies, including master-slave and peer-to-peer communication modes. This allows the welding power supply system to easily adapt to different device connection requirements. Meanwhile, Can-open also supports direct communication between multiple devices, endowing the system with good scalability and facilitating the addition of new devices.

[0026] The frame format and data management of the communication protocol of the present utility model enable it to provide efficient communication even under limited bandwidth conditions. This is particularly important for the welding power supply control system, as a large amount of real-time data, such as current and voltage, needs to be transmitted frequently during the welding process.

[0027] The digital welding power supply control device adopting this standard of the present utility model can be seamlessly integrated with other devices compliant with the Can-open standard, enhancing the interoperability of the system. This means that users can more flexibly select device suppliers without worrying about compatibility issues. Brief Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is a schematic diagram of the communication control system structure provided by an embodiment of the present utility model;

[0030] Figure 2 It is a schematic diagram of the composition of the Can-open master station module and the Can-open slave station module of the present utility model;

[0031] Figure 3 It is a block diagram of the RS-485 communication structure of the present utility model;

[0032] Figure 4 It is a working flowchart of the communication control system of the present utility model.

[0033] Reference Numerals:

[0034] 1. Main control module, 2. Coupling module, 3. Can-open master station module, 4. Can-open slave station module, 5. Can-open master station communication power supply module, 6. Can-open master station terminal module, 7. Can-open slave station coupling module, 8. Can-open slave station power supply module, 9. Can-open slave station input module, 10. Can-open slave station output module, 11. Can-open slave station serial port module, 12. Can-open slave station terminal module, 13. Filter unit, 14. Internal control circuit of STN3 welding power supply, 15. RS-485 communication interface, 16. Operation panel, 17. Display panel, 18. Wire feeder. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other implementation manners obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model fall within the scope protected by the present utility model.

[0036] As Figure 1 shown, a digital welding power supply control device based on the Can-open protocol includes a main control module 1, a coupling module 2, a Can-open master station module 3, a Can-open slave station module 4, and a digital welding power supply. Wherein, the main control module 1 is connected to the coupling module 2, the coupling module 2 is connected to the Can-open master station module 3, the Can-open master station module 3 is connected to the Can-open slave station module 4 through a twisted pair, and the Can-open slave station module 4 communicates with the digital welding power supply.

[0037] As Figure 1 and Figure 2 shown, in some embodiments, the main control module 1 includes an IPC;

[0038] The coupling module 2 includes an Etherca coupler;

[0039] The Can-open master station 3 includes a power supply module 5 for Can-open communication and a Can-open master station terminal module 6;

[0040] The Can-open slave station 4 includes a coupling module 7, a power supply module 8, an input module 9, an output module 10, a serial port module 11, and a terminal module 12;

[0041] The digital welding power source includes a filtering unit 13, an internal control module 14 of the welding power source (i.e., the STN3 internal control circuit of the welding power source), an RS-485 communication interface 15, an operation panel 16, a display panel 17, and a wire feeder 18.

[0042] In some embodiments, the IPC is first connected to the Ethernet bus, and then connected to the Ethercat coupler through a network cable to complete the communication between the main control module 1 and the coupling module 2; the Can-open master station terminal module 6 is connected to the coupling module 10 and the power module 11 of the Can-open slave module to achieve Can-open master-slave communication, and the communication medium is twisted pair; the serial port module 11, as a special bus module, is connected to the RS-485 interface 15 through the filtering unit 13, and bidirectional data communication between the Can bus and RS-485 can be achieved through the conversion of data formats and protocols; the operation panel 16, the display panel 17, and the wire feeder 18 are connected to the RS-485 interface 15 of the STN3 internal control circuit 14 of the welding power source to form a basic digital welding power source system.

[0043] In some embodiments, such as Figure 3 shown, each device communicates through the RS-485 interface to form an RS-485 protocol communication structure.

[0044] The main control module 1 is placed in the main control cabinet, the Can-open master station 3 is placed in the control box, the Can-open slave station 4 is installed on the back of the digital welding power source housing, the operation panel 16 and the display panel 17 are installed on the front of the digital welding power source housing, and the wire feeder 18 is placed beside the digital welding power source.

[0045] The principle of the present utility model is as follows: The staff operates the digital welding power source, sets the corresponding welding parameters on the operation panel 16, and at the same time the display panel 17 will display the current data. The communication data is transmitted to the internal control circuit 14 of the welding power source through the RS-485 interface 15. After integrating the data, it is transmitted to the Can-open slave station 4 through the filtering unit 13, thus realizing the conversion from the RS-485 protocol to the Can-open protocol. The Can-open slave station 4 transmits the received data to the Can-open master station 3 through the twisted pair, and then the data passes through the Etherca coupler and is transmitted from the Can-open master station 3 to the main control module 1 to achieve the integrated processing of the data.

[0046] As Figure 4 described, the control flow of the present utility model is as follows:

[0047] S1. Start;

[0048] S2. Set welding parameters on the operation panel;

[0049] Specifically, the operator can set the welding parameters through the operation panel.

[0050] S3. The data signal is transmitted to the internal control circuit of the STN3 welding power source through the RS-485 interface;

[0051] S4. The data is filtered by the filtering unit and then transmitted to the Can-open slave station;

[0052] By setting like this, the conversion from the RS-485 protocol to the Can-open protocol can be achieved;

[0053] S5. The Can-open master station communicates with the Can-open slave station;

[0054] Specifically, the communication between the Can-open master station 3 and the Can-open slave station 4 is completed using the Can-open protocol;

[0055] S6. The data is transmitted to the Can-open master station;

[0056] S7. The data is transmitted to the main control device through the Etherca coupler;

[0057] S8. The main control device centrally processes the data;

[0058] S9. End;

[0059] In summary, in the solution provided by this application, the Can-open protocol is adopted for communication. The Can-open protocol is a high-level communication protocol based on the Can bus, with fast data transmission capabilities and low latency characteristics. This enables the system to respond to sensor data and execute control commands in real time, which is crucial for precise control during the welding process. Further, the master-slave and peer-to-peer communication modes of the Can-open master station and the Can-open slave station are adopted, with a flexible network topology. This allows the welding power source system to easily adapt to different device connection requirements. At the same time, Can-open also supports direct communication between multiple devices, making the system have good scalability and facilitating the addition of new devices. The frame format and data management of the communication protocol of this utility model enable it to provide efficient communication even under limited bandwidth. This is particularly important for the welding power source control system because a large amount of real-time data, such as current and voltage, needs to be transmitted frequently during the welding process. This digital welding power source control device adopting this standard can be seamlessly integrated with other devices compliant with the Can-open standard, improving the interoperability of the system. This means that users can more flexibly choose device suppliers without worrying about compatibility issues.

[0060] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not detailed in some embodiments can be seen in the same or similar content of other embodiments.

[0061] It should be noted that in the description of the present utility model, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" refers to at least two.

[0062] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0063] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A digital welding power supply control device based on the Can-open protocol, characterized in that: Including main control module, coupling module, Can-open master module, Can-open slave module and digital welding power supply; Wherein, the main control module is connected to the coupling module; The coupling module is connected to the Can-open master module; The Can-open master module and the Can-open slave module are connected in communication based on the Can-open protocol; The Can-open slave module is connected to the digital welding power source.

2. A digital welding power supply control device based on the Can-open protocol according to claim 1, characterized in that: The main control module is an industrial PC.

3. A digital welding power supply control device based on the Can-open protocol according to claim 2, characterized in that: The coupling module is an Ethercat coupler, model EK1100.

4. A digital welding power supply control device based on the Can-open protocol according to claim 1, characterized in that: The Can-open master module includes a communication power module and a Can-open master terminal module; The communication power supply module and the Can-open master terminal module are connected via snap-on hardware terminals; Can-open slave module includes coupling module, power module, input module, output module, serial port module and terminal module; The Can-open master station and the Can-open slave station are connected and communicated by a Can twisted pair cable.

5. A digital welding power supply control device based on the Can-open protocol according to claim 3, characterized in that: The industrial PC is connected to the Ethercat coupler via a network cable to achieve communication between the main control module and the coupling module.

6. A digital welding power supply control device based on the Can-open protocol according to claim 1, characterized in that: The digital welding power supply comprises: a filter unit, a welding power supply internal control module, a wire feeder module, a display panel module and an operation panel module; The welding power supply internal control module is connected to the Can-open slave module through the filter unit; The wire feeder module, the display panel module and the operation panel module are respectively connected to the internal control module of the welding power source through an RS-485 serial interface.

7. A digital welding power supply control device based on the Can-open protocol according to claim 6, characterized in that: The filtering unit is connected to the serial port module in the Can-open slave module and is also connected to the internal control module of the welding power source through an RS-485 bus to realize data conversion between the RS-485 protocol and the Can-open protocol.

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