Data acquisition system controlled by PLC

Abstract

The invention relates to the technical field of welding data acquisition, in particular to a data acquisition system controlled by a PLC (Programmable Logic Controller), which comprises a line body CPU (Central Processing Unit) module for monitoring the state of each station in a line body; the control module is used for controlling the welding pliers to work according to data monitored by the wire body monitoring module; the data acquisition and storage module is used for acquiring and storing data detected in the working process of the electrode holder, acquiring real-time data at a high speed through communication between a PLC (Programmable Logic Controller) and a line body CPU (Central Processing Unit), simultaneously monitoring welding machine parameters of the electrode holder in a line body through the line body CPU module, and timely discovering potential quality problems by monitoring changes of key parameters in the welding process in real time; through combination of data analysis and a control module, the system can automatically adjust welding parameters to adapt to different working conditions and requirements, interference of operators is reduced, and the intelligent level of the whole production line is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding data acquisition, and particularly relates to a data acquisition system controlled by a PLC. BACKGROUND

[0002] In the traditional robot welding process in industrial production, many factors can affect the production of products. Excessive welding current can generate a large amount of heat between the electrode and the welding part, resulting in overheating of welding. The arc voltage and the welding current must match the appropriate arc voltage for a certain welding wire diameter and wire feeding speed, which causes the production process to exceed the requirements.

[0003] The existing welding process monitoring system often has problems such as incomplete information collection, poor real-time performance, and insufficient subsequent data analysis capability, making it difficult to effectively control and optimize the welding process. SUMMARY

[0004] Therefore, the present application aims to provide a data acquisition system controlled by a PLC to solve the problem of untimely data acquisition.

[0005] To achieve the above purpose, the present application provides a data acquisition system controlled by a PLC, which comprises a line body CPU module, a control module, and a data acquisition and storage module.

[0006] Further improvement is that the line body CPU module comprises a pressure sensor, a current sensor, a time relay, and a temperature sensor. The pressure sensor monitors the change of welding pressure, the current sensor monitors the change of current during welding, the time relay monitors the welding time, and the temperature sensor monitors the temperature of the welding tongs.

[0007] Further improvement is that the control module comprises a PLC controller and an industrial computer. The industrial computer processes and analyzes the monitored data, and the PLC controller controls the welding tongs according to the data processing and analysis results.

[0008] Further improvement is that the data acquisition and storage module comprises data acquisition software and a database. The data acquisition software collects data, and the database stores the collected data.

[0009] Further improvement is that the line body CPU module, the data acquisition and storage module, and the control module are connected by communication.

[0010] Further improvement is that the communication connection adopts a Profinet communication protocol.

[0011] The beneficial effects of the present application: by communicating PLC with line body CPU, collecting real-time data at high speed, monitoring the welding machine parameters of the welding tongs in the line body through the line body CPU module, discovering potential quality problems in time through real-time monitoring of the changes of key parameters in the welding process; through the combination of data analysis and control module, the system can automatically adjust the welding parameters to adapt to different working conditions and needs, reduce the intervention of the operator, and improve the intelligent level of the overall production line.

[0012] Through the data acquisition and storage module, the welding data will be stored and recorded, and the parameter setting and related process of each welding can be traced back, which is convenient for quality control and problem analysis in the later period. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only illustrate the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0014] Figure 1 The module structure diagram of the embodiment of the present application. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will further illustrate the present application in detail by combining with specific embodiments.

[0016] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by those skilled in the art to which the present application belongs. The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0017] As Figure 1As shown, the embodiment provides a data acquisition system controlled by PLC, a line body CPU module, which monitors the state of each station in the line body; the line body CPU module includes a pressure sensor, a current sensor, a time relay and a temperature sensor, the pressure sensor monitors the change of welding pressure, the current sensor monitors the change of current during welding, the time relay monitors the welding time, and the temperature sensor monitors the temperature of the welding tongs; each sensor converts the collected data into an electrical signal and sends it to the control module.

[0018] The control module controls the work of the welding tongs through the data monitored by the line body monitoring module; the control module includes a PLC controller and an industrial computer, the industrial computer processes and analyzes the monitored data, and compares the monitored data with the set parameters; the PLC controller controls the welding tongs according to the data processing and analysis results, so as to ensure that the working parameters of the welding tongs meet the requirements and ensure the processing quality.

[0019] The data acquisition and storage module collects and stores the data detected during the working process of the welding tongs. The data acquisition and storage module includes a data acquisition software and a database, the data acquisition software collects data, and the database stores the collected data. The data acquisition software can be WeldQ, Vero WELD, etc. The data acquisition software is a prior art, which is not particularly limited here.

[0020] The line body CPU module, the control module and the data acquisition and storage module are connected by communication; the communication connection adopts Profinet communication protocol, which is suitable for the requirement of real-time control.

[0021] The line body CPU module senses the working data of each station in the line body, monitors the real-time data in the working process of the equipment, and converts the monitored real-time data into an electrical signal and sends it to the control module. The industrial computer quickly processes the real-time data, the PLC controls the welding tongs to adjust, and responds to the changes in the production process in real time; the processed data is sent to the data acquisition and storage module, the data acquisition software receives and collects the sent data, and imports the received data into the database for storage, which is convenient for subsequent viewing.

[0022] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary and is not intended to suggest that the scope of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in details. Any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A data acquisition system controlled by PLC, characterized in that: It includes a line CPU module, which monitors the status of each workstation in the line; a control module, which controls the operation of the welding clamp through the data monitored by the line monitoring module; and a data acquisition and storage module, which collects and stores the detection data of the welding clamp working process.

2. A data acquisition system controlled by PLC according to claim 1, characterized in that: The line CPU module includes a pressure sensor, a current sensor, a time relay and a temperature sensor. The pressure sensor monitors the change of welding pressure, the current sensor monitors the change of current during welding, the time relay monitors the welding time, and the temperature sensor monitors the temperature of the welding clamp.

3. The data acquisition system controlled by PLC according to claim 1, characterized in that: The control module includes a PLC controller and an industrial computer. The industrial computer processes and analyzes the monitored data, and the PLC controller controls the welding clamp according to the data processing and analysis results.

4. The data acquisition system controlled by PLC according to claim 1, characterized in that: The data acquisition and storage module includes data acquisition software and a database. The data acquisition software is used to collect data, and the database is used to store the collected data.

5. The data acquisition system controlled by PLC according to claim 1, characterized in that: The line body CPU module, the data acquisition and storage module and the control module are connected by communication.

6. A data acquisition system controlled by PLC according to claim 5, characterized in that: The communication connection adopts Profinet communication protocol.

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