Welding quality control method and device based on real-time measurement of laser welding temperature field

Abstract

The present disclosure provides a welding quality control method and device based on real-time measurement of laser welding temperature field, which relates to the field of temperature detection and control technology. The method includes: comparing the real-time temperature measured in real time with the preset temperature to obtain the real-time temperature deviation; when the predetermined deviation threshold is reached, laser welding regulation is performed, wherein the intelligent control module includes a process control unit, an auxiliary control unit and a basic protection unit; laser welding quality control is performed through the coordinated cooperation of the process control unit, the auxiliary control unit and the basic protection unit. The present disclosure can solve the technical problems in the prior art that the real-time temperature monitoring efficiency and accuracy of the laser welding temperature field are low, and the visualization is poor, resulting in low welding quality control efficiency and poor welding quality, and achieve the goal of improving the efficiency and accuracy of real-time temperature monitoring, and achieve the technical effect of improving welding quality control efficiency and welding quality.

Description

Technical Field

[0001] The present disclosure relates to the technical field of temperature detection and control, and in particular to a welding quality control method and device based on real-time measurement of laser welding temperature field. Background Art

[0002] Temperature monitoring technology of laser welding temperature field plays an important role as a step in laser processing. Real-time temperature monitoring of laser welding temperature field plays a key role in improving welding quality control such as laser welding and processing parts forming. At present, the existing welding quality control has time lag and the visualization degree of laser welding temperature field is low, resulting in adverse effects such as reduced welding quality. Therefore, a method is needed to control welding quality.

[0003] In summary, the prior art has technical problems such as low efficiency and accuracy of real-time temperature monitoring of the laser welding temperature field and poor visualization, which leads to low welding quality control efficiency and poor welding quality. Summary of the invention

[0004] The present disclosure provides a welding quality control method and device based on real-time measurement of the laser welding temperature field, which is used to solve the technical problems in the prior art that the real-time temperature monitoring efficiency and accuracy of the laser welding temperature field are low, and the visualization is poor, resulting in low welding quality control efficiency and poor welding quality.

[0005] According to the first aspect of the present disclosure, a welding quality control method based on real-time measurement of the laser welding temperature field is provided, including: comparing the real-time temperature measured in real time based on the distributed temperature sensor with the preset temperature to obtain the real-time temperature deviation; when the real-time temperature deviation reaches a predetermined deviation threshold, activating the intelligent control module to perform laser welding regulation, wherein the intelligent control module includes a process control unit, an auxiliary control unit and a basic protection unit; laser welding quality control is performed through the coordinated cooperation of the process control unit, the auxiliary control unit and the basic protection unit.

[0006] According to a second aspect of the present disclosure, a welding quality control device based on real-time measurement of a laser welding temperature field is provided, comprising: a real-time temperature deviation acquisition module, the real-time temperature deviation acquisition module is used to compare the real-time temperature measured in real time based on the distributed temperature sensor with a preset temperature to obtain a real-time temperature deviation; an intelligent control module activation module, the intelligent control module activation module is used to activate the intelligent control module to perform laser welding regulation when the real-time temperature deviation reaches a predetermined deviation threshold, wherein the intelligent control module comprises a process regulation unit, an auxiliary control unit and a basic protection unit; a laser welding quality control module, the laser welding quality control module is used to perform laser welding quality control through the coordinated cooperation of the process regulation unit, the auxiliary control unit and the basic protection unit.

[0007] One or more technical solutions provided in the present disclosure have at least the following technical effects or advantages: according to the present disclosure, the real-time temperature measured in real time by the distributed temperature sensor is compared with the preset temperature to obtain a real-time temperature deviation; when the real-time temperature deviation reaches a predetermined deviation threshold, the intelligent control module is activated to perform laser welding regulation, wherein the intelligent control module includes a process control unit, an auxiliary control unit and a basic protection unit; laser welding quality control is performed by the coordinated cooperation of the process control unit, the auxiliary control unit and the basic protection unit, thereby solving the technical problems in the prior art of low efficiency and accuracy of real-time temperature monitoring of the laser welding temperature field and poor visualization, resulting in low welding quality control efficiency and poor welding quality, thereby achieving the goal of improving the efficiency and accuracy of real-time temperature monitoring and achieving the technical effect of improving welding quality control efficiency and welding quality.

[0008] It should be understood that the contents described in this section are not intended to indicate the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the present disclosure or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0010] Figure 1 A schematic flow chart of a welding quality control method based on real-time measurement of laser welding temperature field provided in an embodiment of the present disclosure.

[0011] Figure 2It is a logical schematic diagram of laser welding quality control by releasing a predetermined protective gas through the basic protection unit in the welding quality control method based on real-time measurement of the laser welding temperature field in an embodiment of the present disclosure.

[0012] Figure 3 A schematic structural diagram of a welding quality control device based on real-time measurement of laser welding temperature field provided in an embodiment of the present disclosure.

[0013] Explanation of the reference numerals: real-time temperature deviation acquisition module 11 , intelligent control module activation module 12 , laser welding quality control module 13 . DETAILED DESCRIPTION

[0014] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0015] Embodiment 1

[0016] The welding quality control method based on real-time measurement of laser welding temperature field provided by the embodiment of the present disclosure is referred to Figure 1 and Figure 2 Illustratively, the method comprises:

[0017] Comparing the real-time temperature measured by the distributed temperature sensor with the preset temperature to obtain a real-time temperature deviation;

[0018] Specifically, the welding quality control device based on the real-time measurement of the laser welding temperature field is connected to the distributed temperature sensor for data transmission. The temperature of the laser welding temperature field is measured in real time by the distributed temperature sensor to obtain the real-time temperature. The preset temperature of the laser welding temperature field is extracted, and the preset temperature is obtained by a technician in this field according to the actual situation. Further, the obtained real-time temperature is compared with the preset temperature to obtain the comparison temperature as the real-time temperature deviation.

[0019] When the real-time temperature deviation reaches a predetermined deviation threshold, the intelligent control module is activated to perform laser welding regulation, wherein the intelligent control module includes a process regulation unit, an auxiliary control unit and a basic protection unit;

[0020] Specifically, the laser welding temperature field has a preset temperature, and the temperature of all positions in the laser welding temperature field should be the preset temperature. However, there is actually a real-time temperature deviation. Therefore, once the real-time temperature deviation between the real-time temperature of a position and the preset temperature reaches a predetermined deviation threshold, the intelligent control module is activated to perform laser welding regulation. Furthermore, the intelligent control module includes a process control unit, an auxiliary control unit, and a basic protection unit. Among them, the process control unit, the auxiliary control unit, and the basic protection unit have a hierarchical progressive relationship.

[0021] The laser welding quality control is performed through the coordinated cooperation of the process control unit, the auxiliary control unit and the basic protection unit.

[0022] Specifically, the predetermined protective gas is released through the basic protection unit, the temperature is controlled by the predetermined pre-cooling auxiliary equipment or the predetermined preheating auxiliary equipment in the auxiliary control unit, and the real-time welding process is dynamically optimized and controlled by the process control unit, and the laser welding quality control is carried out in coordination.

[0023] Among them, this embodiment can solve the technical problems in the prior art that the real-time temperature monitoring efficiency and accuracy of the laser welding temperature field are low, and the visualization is poor, resulting in low welding quality control efficiency and poor welding quality, thereby achieving the goal of improving the real-time temperature monitoring efficiency and accuracy, and achieving the technical effect of improving the welding quality control efficiency and welding quality.

[0024] The method provided in the embodiment of the present disclosure also includes:

[0025] Acquire a first temperature sensor, where the first temperature sensor refers to a temperature sensor in the distributed temperature sensor disposed at a first position in the laser welding temperature field;

[0026] Acquire a first real-time temperature, where the first real-time temperature refers to real-time temperature data of the first position monitored by the first temperature sensor in the real-time temperature;

[0027] Combining the preset temperature with the first real-time temperature to obtain a first real-time temperature deviation;

[0028] When the first real-time temperature deviation reaches the first predetermined deviation threshold, a predetermined protective gas is released through the basic protection unit to perform laser welding quality control.

[0029] Specifically, the predetermined deviation threshold includes a first predetermined deviation threshold, a second predetermined deviation threshold and a third predetermined deviation threshold, and the first predetermined deviation threshold is smaller than the second predetermined deviation threshold and smaller than the third predetermined deviation threshold, wherein the difference between the second predetermined deviation threshold and the first predetermined deviation threshold and the difference between the third predetermined deviation threshold and the second predetermined deviation threshold are custom settings, and the two differences may be the same or different.

[0030] Further, the position of the laser welding temperature field is randomly extracted as the first position, and the temperature sensor arranged at the first position is used as the first temperature sensor. The first temperature sensor monitors the real-time temperature data of the first position to obtain the first real-time temperature. The real-time temperature includes the first real-time temperature.

[0031] Furthermore, the preset temperature of the laser welding temperature field is compared with the first real-time temperature to obtain a first real-time temperature deviation, wherein the real-time temperature deviation includes the first real-time temperature deviation.

[0032] Furthermore, when the first real-time temperature deviation reaches the first predetermined deviation threshold, the predetermined shielding gas is released through the basic protection unit of the intelligent control module to control the laser welding quality. During the laser welding process, selecting a suitable shielding gas as the predetermined shielding gas can prevent the molten pool from reacting with oxygen and moisture in the air to produce pores and oxides. The predetermined shielding gas is obtained by customizing the settings according to the actual situation.

[0033] Among them, the temperature of the welding area is controlled by the basic protection unit to improve the quality of laser welding.

[0034] The method provided in the embodiment of the present disclosure also includes:

[0035] When the first real-time temperature deviation reaches the second predetermined deviation threshold, laser welding quality control is performed through a predetermined pre-cooling auxiliary device or a predetermined pre-heating auxiliary device in the auxiliary control unit.

[0036] Specifically, when the first real-time temperature deviation reaches the second predetermined deviation threshold, the temperature of the welding area is regulated by a predetermined pre-cooling auxiliary device or a predetermined preheating auxiliary device in the auxiliary control unit of the intelligent control module, and then the laser welding quality is controlled, so as to reduce the thermal stress in the welding area and reduce the degree of deformation.

[0037] The method provided in the embodiment of the present disclosure also includes:

[0038] When the first real-time temperature deviation reaches the third predetermined deviation threshold, the real-time welding process is dynamically optimized and regulated by the process control unit to obtain a target welding process, wherein the real-time welding process refers to a process scheme composed of real-time indicator parameters of predetermined welding indicators, and the predetermined welding indicators include laser power, welding speed, welding angle and welding rod path;

[0039] Laser welding quality control is performed according to the target welding process.

[0040] Specifically, when the first real-time temperature deviation reaches the third predetermined deviation threshold, the process control unit of the intelligent control module dynamically optimizes and controls the real-time welding process to obtain a target welding process, wherein the real-time welding process refers to a process scheme composed of real-time indicator parameters of predetermined welding indicators, and the predetermined welding indicators include laser power, welding speed, welding angle and welding rod path. Among them, the welding rod path includes straight-line welding rod movement and crescent-shaped welding rod movement. Furthermore, by optimizing the real-time indicator parameters of predetermined welding indicators such as laser power, welding speed, welding angle and welding rod path in the target welding process, the distribution and change of the molten pool temperature can be controlled, and then the laser welding quality control can be performed.

[0041] The method provided in the embodiment of the present disclosure also includes:

[0042] The welding rod path includes a straight-shaped welding rod path and a crescent-shaped welding rod path.

[0043] Specifically, the electrode path includes straight-line electrode movement and crescent-shaped electrode movement. The straight-line electrode movement is achieved by the end of the electrode swinging forward in a zigzag shape and pausing slightly on both sides to prevent undercutting. It is suitable for welding each layer of welds in horizontal, vertical and overhead welding positions. The end of the electrode in the crescent-shaped electrode movement swings left and right in a crescent shape along the welding direction, with fast movement in the middle and slight pausing on both sides. This method can effectively control the molten pool temperature. If the molten pool is shallow, undercutting should be prevented on both the front and back sides. Among them, the straight-line electrode movement and crescent-shaped electrode movement electrode paths are used to improve the efficiency of real-time indicator parameter control.

[0044] The method provided in the embodiment of the present disclosure also includes:

[0045] Acquire a predetermined welding process, wherein the predetermined welding process includes a first predetermined welding process, a second predetermined welding process, and a third predetermined welding process;

[0046] Retrieving historical laser welding records, wherein the historical laser welding records include multiple historical welding processes and multiple historical temperature deviations during multiple historical welding processes;

[0047] Extracting a first historical welding process from the plurality of historical welding processes, and sequentially calculating process similarities between the first historical welding process and the first predetermined welding process, the second predetermined welding process, and the third predetermined welding process, to obtain a first similarity, a second similarity, and a third similarity, respectively;

[0048] Comparing the first similarity, the second similarity and the third similarity to obtain a predetermined process corresponding to a target similarity, recorded as a target predetermined process;

[0049] Adding the first historical welding process to a target process group of the target predetermined process;

[0050] combining the plurality of historical temperature deviations to match a first historical temperature deviation of the first historical welding process;

[0051] According to a target weight coefficient determined based on the target similarity, weighting the first historical temperature deviation to obtain a target group comprehensive index of the target process group;

[0052] The target welding process is determined based on the target group comprehensive index.

[0053] Specifically, the predetermined welding process is obtained by customizing and determining according to the welding experience of workers in the historical time. Wherein, the predetermined welding process includes predetermined indicator parameters of the predetermined welding indicator. Further, the predetermined welding process includes a first predetermined welding process, a second predetermined welding process and a third predetermined welding process.

[0054] Further, the historical laser welding records of the predetermined welding process are retrieved, and the historical laser welding records include multiple historical welding processes and multiple historical temperature deviations during multiple historical welding processes. Among them, multiple historical welding processes refer to a process scheme composed of multiple historical indicator parameters of a predetermined welding indicator. Multiple historical temperature deviations refer to multiple temperature deviations obtained by comparing multiple historical temperatures during historical welding with preset temperatures.

[0055] Further, a first historical welding process is randomly extracted from a plurality of historical welding processes, and the process similarities between the first historical welding process and the first predetermined welding process, the first historical welding process and the second predetermined welding process, and the first historical welding process and the third predetermined welding process are calculated in sequence, and the first similarity, the second similarity, and the third similarity are obtained in sequence. In the process of process similarity comparison, the similarity of the historical indicator parameters of the predetermined welding indicator corresponding to the first historical welding process and the predetermined indicator parameters of the predetermined welding indicator corresponding to the first predetermined welding process can be compared to obtain the result as the first similarity, and the second similarity and the third similarity can be obtained respectively.

[0056] Furthermore, the first similarity, the second similarity and the third similarity are compared in terms of the degree of similarity, the similarity corresponding to the highest similarity is obtained as the target similarity, and the predetermined process corresponding to the target similarity is extracted and recorded as the target predetermined process. During the similarity comparison process, the first similarity, the second similarity and the third similarity can be serialized according to the degree of similarity, and the similarity with the highest similarity in the serialization result is obtained as the target similarity.

[0057] Further, the target predetermined process has a target process group for determining the target welding process. The first historical welding process in the historical welding processes is added to the target process group of the target predetermined process.

[0058] Furthermore, the first historical welding process is matched with multiple historical welding processes in the historical laser welding records, and a historical temperature deviation corresponding to the first historical welding process in multiple historical temperature deviations is obtained as the first historical temperature deviation.

[0059] Furthermore, in the process of obtaining the target similarity, the similarity levels of the first similarity, the second similarity and the third similarity are obtained respectively, and different weights are assigned to the first similarity, the second similarity and the third similarity respectively according to the similarity levels from high to low, and the weight of the target similarity is obtained according to the weight matching of the first similarity, the second similarity and the third similarity as the target weight coefficient. The weight distribution ratio is obtained by a person skilled in the art according to a custom setting according to actual conditions.

[0060] Furthermore, the target weight coefficient and the first historical temperature deviation are weighted to obtain the target group comprehensive index of the target process group. The weight distribution ratio of the target weight coefficient and the first historical temperature deviation is obtained by a technician in this field according to the actual situation. For example, 6:4.

[0061] Further, the target welding process is determined based on the target group comprehensive index. For example, by iteratively dividing the first process group, the second process group and the third process group of the first predetermined welding process, the second predetermined welding process and the third predetermined welding process, the unique group after division is determined as the target welding process.

[0062] The real-time welding process is dynamically optimized and regulated by the process control unit to obtain the target welding process, thereby improving the accuracy of obtaining the target welding process and improving the efficiency of optimization.

[0063] The method provided in the embodiment of the present disclosure also includes:

[0064] Respectively obtain a first process group, a second process group and a third process group of the first predetermined welding process, the second predetermined welding process and the third predetermined welding process, wherein the first process group has a first group comprehensive index, the second process group has a second group comprehensive index, and the third process group has a third group comprehensive index;

[0065] Arrange the first process group, the second process group and the third process group in descending order based on the first group comprehensive index, the second group comprehensive index and the third group comprehensive index to obtain a group descending list;

[0066] The first group in the descending list of groups divides the processes of the last group in the last group to obtain a process division result;

[0067] Continue iterating until the predetermined constraints are met, and then a unique group is obtained;

[0068] The unique group processes in the unique group are compared to obtain a target unique process, and the target unique process is used as the target welding process.

[0069] Specifically, by obtaining the target process group, the first process group, the second process group and the third process group corresponding to the first predetermined welding process, the second predetermined welding process and the third predetermined welding process are respectively obtained, wherein, according to the method of obtaining the target group comprehensive index of the target process group, the first process group has the first group comprehensive index, the second process group has the second group comprehensive index, and the third process group has the third group comprehensive index.

[0070] Furthermore, based on the first group comprehensive index, the second group comprehensive index and the third group comprehensive index, the first process group, the second process group and the third process group are arranged in descending order from high to low according to the group comprehensive index to obtain a group descending list, among which the group comprehensive index corresponding to the first-ranked process group is the highest.

[0071] Furthermore, the process groups ranked first and second in the group descending list are taken as the first group, and the process group ranked third in the group descending list is taken as the last group. The first group in the group descending list divides the last group process in the last group to obtain the process division result. Among them, the proportion of the first group to divide the last group is based on the custom setting. For example, the proportion of the first and second process groups ranked first and second in the group descending list of the first group is 7:3.

[0072] Furthermore, the iterative division is continued, the process group ranked first in the group descending list is taken as the first group, and the process group ranked second is taken as the last group. The last group process of the last group is divided by the first group, and only one process group is left, that is, the predetermined constraint is met, and a unique group is obtained.

[0073] Furthermore, the unique group processes in the unique group are compared to obtain a target unique process, and the target unique process is used as the target welding process. In the process of comparing the unique group processes, by comparing the process similarity between the unique group process and the predetermined welding process, and by comparing the degree of deviation between the historical temperature deviations of the unique group processes, the unique process with the lowest process similarity and the smallest degree of deviation can be used as the target unique process.

[0074] Among them, the target welding process is determined based on the comprehensive index of the target group, thereby improving the efficiency and optimization accuracy of obtaining the target welding process through optimization.

[0075] The method provided in the embodiment of the present disclosure also includes:

[0076] Acquire a first corresponding relationship between the first position and the first real-time temperature deviation;

[0077] The first corresponding relationship is dynamically displayed through the intelligent display to obtain a visualized welding temperature field.

[0078] Specifically, the welding quality control device based on real-time measurement of the laser welding temperature field is also connected to an intelligent display for communication to obtain a first corresponding relationship between a first position in the laser welding temperature field and a first real-time temperature deviation corresponding to the first position.

[0079] Furthermore, the first corresponding relationship is dynamically displayed through an intelligent display, that is, it is displayed whether the first real-time temperature deviation corresponding to the first position reaches a first predetermined deviation threshold, so as to obtain a visualized welding temperature field, and then the predetermined protective gas is released through the basic protection unit to perform laser welding quality control, thereby improving the efficiency and accuracy of laser welding quality control.

[0080] Embodiment 2

[0081] Based on the same inventive concept as the welding quality control method based on real-time measurement of laser welding temperature field in the aforementioned embodiment, Figure 3 For illustration, the present disclosure also provides a welding quality control device based on real-time measurement of laser welding temperature field, the device comprising:

[0082] A real-time temperature deviation obtaining module 11, wherein the real-time temperature deviation obtaining module 11 is used to compare the real-time temperature measured by the distributed temperature sensor with the preset temperature to obtain the real-time temperature deviation;

[0083] An intelligent control module activation module 12, wherein the intelligent control module activation module 12 is used to activate the intelligent control module to perform laser welding regulation when the real-time temperature deviation reaches a predetermined deviation threshold, wherein the intelligent control module includes a process regulation unit, an auxiliary control unit and a basic protection unit;

[0084] The laser welding quality control module 13 is used to perform laser welding quality control through the coordinated cooperation of the process control unit, the auxiliary control unit and the basic protection unit.

[0085] Furthermore, the device also includes:

[0086] A first temperature sensor acquisition module, the first temperature sensor acquisition module is used to acquire a first temperature sensor, the first temperature sensor refers to a temperature sensor arranged at a first position in the laser welding temperature field in the distributed temperature sensor;

[0087] a first real-time temperature acquisition module, the first real-time temperature acquisition module is used to acquire a first real-time temperature, where the first real-time temperature refers to real-time temperature data of the first position monitored by the first temperature sensor in the real-time temperature;

[0088] A first real-time temperature deviation obtaining module, the first real-time temperature deviation obtaining module is used to obtain a first real-time temperature deviation by combining the preset temperature and the first real-time temperature;

[0089] A predetermined protective gas release module is used to release a predetermined protective gas through the basic protection unit to perform laser welding quality control when the first real-time temperature deviation reaches the first predetermined deviation threshold.

[0090] Furthermore, the device also includes:

[0091] An auxiliary control unit control module, wherein the auxiliary control unit control module is used to perform laser welding quality control through a predetermined pre-cooling auxiliary device or a predetermined pre-heating auxiliary device in the auxiliary control unit when the first real-time temperature deviation reaches the second predetermined deviation threshold.

[0092] Furthermore, the device also includes:

[0093] a target welding process acquisition module, wherein when the first real-time temperature deviation reaches the third predetermined deviation threshold, the target welding process acquisition module dynamically optimizes and controls the real-time welding process through the process control unit to obtain a target welding process, wherein the real-time welding process refers to a process scheme composed of real-time indicator parameters of predetermined welding indicators, and the predetermined welding indicators include laser power, welding speed, welding angle and welding rod path;

[0094] A target welding process control module is used to perform laser welding quality control according to the target welding process.

[0095] Furthermore, the device also includes:

[0096] A welding rod path acquisition module, wherein the welding rod path acquisition module is used for the welding rod path including straight-line welding rod movement and crescent-shaped welding rod movement.

[0097] Furthermore, the device also includes:

[0098] A predetermined welding process acquisition module, wherein the predetermined welding process acquisition module is used to acquire a predetermined welding process, wherein the predetermined welding process includes a first predetermined welding process, a second predetermined welding process, and a third predetermined welding process;

[0099] A laser welding record retrieval module, wherein the laser welding record retrieval module is used to retrieve historical laser welding records, wherein the historical laser welding records include multiple historical welding processes and multiple historical temperature deviations during multiple historical welding processes;

[0100] A first historical welding process extraction module, wherein the first historical welding process extraction module is used to extract a first historical welding process from the plurality of historical welding processes, and sequentially calculate process similarities between the first historical welding process and the first predetermined welding process, the second predetermined welding process, and the third predetermined welding process to obtain a first similarity, a second similarity, and a third similarity, respectively;

[0101] a target predetermined process obtaining module, wherein the target predetermined process obtaining module is used to compare the first similarity, the second similarity and the third similarity to obtain a predetermined process corresponding to the target similarity, which is recorded as the target predetermined process;

[0102] A target process group acquisition module, wherein the target process group acquisition module is used to add the first historical welding process to the target process group of the target predetermined process;

[0103] A first historical temperature deviation matching module, the first historical temperature deviation matching module is used to match a first historical temperature deviation of the first historical welding process in combination with the multiple historical temperature deviations;

[0104] a target group comprehensive index obtaining module, the target group comprehensive index obtaining module being used to obtain the target group comprehensive index of the target process group by weighting the first historical temperature deviation according to a target weight coefficient determined based on the target similarity;

[0105] A target welding process determination module is used to determine the target welding process based on the target group comprehensive index.

[0106] Furthermore, the device also includes:

[0107] A first predetermined welding process acquisition module, the first predetermined welding process acquisition module is used to respectively acquire a first process group, a second process group and a third process group of the first predetermined welding process, the second predetermined welding process and the third predetermined welding process, wherein the first process group has a first group comprehensive index, the second process group has a second group comprehensive index, and the third process group has a third group comprehensive index;

[0108] a group descending list obtaining module, the group descending list obtaining module being used to arrange the first process group, the second process group and the third process group in descending order based on the first group comprehensive index, the second group comprehensive index and the third group comprehensive index to obtain a group descending list;

[0109] A process division result obtaining module, wherein the process division result obtaining module is used to divide the process of the last group in the last group by the first group in the group descending list to obtain a process division result;

[0110] A unique group obtaining module, wherein the unique group obtaining module is used to continue iterating until a predetermined constraint is reached, and then obtain a unique group;

[0111] A target unique process acquisition module is used to compare the unique group processes in the unique group to obtain a target unique process, and use the target unique process as the target welding process.

[0112] Furthermore, the device also includes:

[0113] A first corresponding relationship obtaining module, the first corresponding relationship obtaining module is used to obtain a first corresponding relationship between the first position and the first real-time temperature deviation;

[0114] A visualized welding temperature field acquisition module is used to dynamically display the first corresponding relationship through the intelligent display to obtain a visualized welding temperature field.

[0115] The specific example of the welding quality control method based on real-time measurement of the laser welding temperature field in the aforementioned embodiment 1 is also applicable to the welding quality control device based on real-time measurement of the laser welding temperature field in this embodiment. Through the aforementioned detailed description of the welding quality control method based on real-time measurement of the laser welding temperature field, those skilled in the art can clearly know the welding quality control device based on real-time measurement of the laser welding temperature field in this embodiment, so for the sake of brevity of the specification, it will not be described in detail here. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0116] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of this disclosure can be achieved, and this document is not limited here.

[0117] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A welding quality control method based on real-time measurement of laser welding temperature field, characterized in that: The method is applied to a welding quality control device based on real-time measurement of laser welding temperature field, the device is communicatively connected with a distributed temperature sensor, and the device includes an intelligent control module, and the method includes: Comparing the real-time temperature measured by the distributed temperature sensor with the preset temperature to obtain a real-time temperature deviation; When the real-time temperature deviation reaches a predetermined deviation threshold, the intelligent control module is activated to perform laser welding regulation, wherein the intelligent control module includes a process regulation unit, an auxiliary control unit and a basic protection unit; The laser welding quality control is performed by the process control unit, the auxiliary control unit and the basic protection unit in coordination, the predetermined protection gas is released by the basic protection unit, the temperature is controlled by the predetermined pre-cooling auxiliary equipment or the predetermined pre-heating auxiliary equipment in the auxiliary control unit, and the real-time welding process is dynamically optimized and controlled by the process control unit, so as to coordinate and control the laser welding quality control; Wherein, the predetermined deviation threshold includes a first predetermined deviation threshold, a second predetermined deviation threshold and a third predetermined deviation threshold, and the first predetermined deviation threshold is less than the second predetermined deviation threshold and less than the third predetermined deviation threshold, and the laser welding quality control is performed by the process control unit, the auxiliary control unit and the basic protection unit in coordination, including: Acquire a first temperature sensor, where the first temperature sensor refers to a temperature sensor in the distributed temperature sensor disposed at a first position in the laser welding temperature field; Acquire a first real-time temperature, where the first real-time temperature refers to real-time temperature data of the first position monitored by the first temperature sensor in the real-time temperature; Combining the preset temperature with the first real-time temperature to obtain a first real-time temperature deviation; When the first real-time temperature deviation reaches the first predetermined deviation threshold, releasing a predetermined protective gas through the basic protection unit to perform laser welding quality control; When the first real-time temperature deviation reaches the second predetermined deviation threshold, laser welding quality control is performed by a predetermined precooling auxiliary device or a predetermined preheating auxiliary device in the auxiliary control unit; When the first real-time temperature deviation reaches the third predetermined deviation threshold, the real-time welding process is dynamically optimized and regulated by the process control unit to obtain a target welding process, wherein the real-time welding process refers to a process scheme composed of real-time indicator parameters of predetermined welding indicators, and the predetermined welding indicators include laser power, welding speed, welding angle and welding path; Laser welding quality control is performed according to the target welding process.

2. The method according to claim 1, characterized in that: The welding path includes a straight-shaped welding path and a crescent-shaped welding path.

3. The method according to claim 2, characterized in that: When the first real-time temperature deviation reaches the third predetermined deviation threshold, the real-time welding process is dynamically optimized and regulated by the process control unit to obtain a target welding process, including: Acquire a predetermined welding process, wherein the predetermined welding process includes a first predetermined welding process, a second predetermined welding process, and a third predetermined welding process; Retrieving historical laser welding records, wherein the historical laser welding records include multiple historical welding processes and multiple historical temperature deviations during multiple historical welding processes; Extracting a first historical welding process from the plurality of historical welding processes, and sequentially calculating process similarities between the first historical welding process and the first predetermined welding process, the second predetermined welding process, and the third predetermined welding process, to obtain a first similarity, a second similarity, and a third similarity, respectively; Comparing the first similarity, the second similarity and the third similarity to obtain a predetermined process corresponding to a target similarity, recorded as a target predetermined process; Adding the first historical welding process to a target process group of the target predetermined process; combining the plurality of historical temperature deviations to match a first historical temperature deviation of the first historical welding process; According to a target weight coefficient determined based on the target similarity, weighting the first historical temperature deviation to obtain a target group comprehensive index of the target process group; The target welding process is determined based on the target group comprehensive index.

4. The method according to claim 3, characterized in that: The step of determining the target welding process based on the target group comprehensive index comprises: Respectively obtain a first process group, a second process group and a third process group of the first predetermined welding process, the second predetermined welding process and the third predetermined welding process, wherein the first process group has a first group comprehensive index, the second process group has a second group comprehensive index, and the third process group has a third group comprehensive index; Arrange the first process group, the second process group and the third process group in descending order based on the first group comprehensive index, the second group comprehensive index and the third group comprehensive index to obtain a group descending list; The first group in the descending list of groups divides the processes of the last group in the last group to obtain a process division result; Continue to iterate until the predetermined constraint is reached, then a unique group is obtained; wherein, the process groups ranked first and second in the group descending list are taken as the first group, and the process group ranked third in the group descending list is taken as the last group, and the first group in the group descending list divides the last group process in the last group to obtain the process division result, wherein the proportion of the first group to divide the last group is based on the custom setting; continue to iterate the division, the process group ranked first in the group descending list is taken as the first group, and the process group ranked second is taken as the last group, and the first group divides the last group process of the last group, and only one process group is left, that is, the predetermined constraint is reached, then a unique group is obtained; The unique group processes in the unique group are compared to obtain a target unique process, and the target unique process is used as the target welding process.

5. The method according to claim 1, characterized in that: The device is also in communication with a smart display, and the method further comprises: Acquire a first corresponding relationship between the first position and the first real-time temperature deviation; The first corresponding relationship is dynamically displayed through the intelligent display to obtain a visualized welding temperature field.

6. A welding quality control device based on real-time measurement of laser welding temperature field, characterized in that: The device is used to implement the welding quality control method based on real-time measurement of laser welding temperature field according to any one of claims 1 to 5, wherein the device is communicatively connected with a distributed temperature sensor, and the device includes an intelligent control module, and the device includes: A real-time temperature deviation obtaining module, wherein the real-time temperature deviation obtaining module is used to compare the real-time temperature measured in real time by the distributed temperature sensor with a preset temperature to obtain a real-time temperature deviation; An intelligent control module activation module, wherein the intelligent control module activation module is used to activate the intelligent control module to perform laser welding regulation when the real-time temperature deviation reaches a predetermined deviation threshold, wherein the intelligent control module includes a process regulation unit, an auxiliary control unit and a basic protection unit; A laser welding quality control module is used to perform laser welding quality control through the coordinated cooperation of the process control unit, the auxiliary control unit and the basic protection unit.

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