CN-122015633-A - Welding rod eccentric on-line measuring system based on electromagnetic induction and infrared ranging fusion

CN122015633ACN 122015633 ACN122015633 ACN 122015633ACN-122015633-A

Abstract

The invention discloses an online welding rod eccentricity measuring system based on electromagnetic induction and infrared distance measurement fusion, which comprises a measuring frame, a plurality of electromagnetic induction positioning units, a plurality of infrared distance measurement positioning units, a data synchronization and fusion processing module and an eccentricity calculation and result output module, wherein the measuring frame is provided with an annular mounting frame and a welding rod channel, the electromagnetic induction positioning units are uniformly distributed along the circumferential direction of the annular mounting frame, the infrared distance measurement positioning units are uniformly distributed along the circumferential direction of the annular mounting frame, the data synchronization and fusion processing module is used for synchronously collecting electromagnetic response signals of the electromagnetic induction positioning units and distance measurement data of the infrared distance measurement positioning units, and the eccentricity calculation and result output module comprises an eccentricity calculation module and a result output module. The invention discloses an on-line measuring system for welding rod eccentricity based on fusion of electromagnetic induction and infrared ranging, and aims to solve the technical problems that the existing welding rod eccentricity detection method cannot realize on-line continuous measurement, is limited in detection accuracy and is difficult to acquire the real spatial position relation between a welding core and a coating.

Inventors

ZHANG YAQI
XU HUI
YUAN DONGFENG
WANG XINYI

Assignees

中达科技(浙江)有限公司

Dates

Publication Date: 20260512
Application Date: 20260127

Claims (7)

1. An eccentric online measurement system of welding rod based on electromagnetic induction and infrared ranging fuses, characterized by comprising: the measuring frame is provided with an annular mounting frame and a welding rod channel, wherein the center line of the welding rod channel is collinear with the center of the circle of the annular mounting frame so as to ensure that the measuring section is vertical to the axis of the welding rod; The electromagnetic induction positioning units are uniformly distributed along the circumferential direction of the annular mounting frame and keep a non-contact induction distance with the welding rod, each electromagnetic induction positioning unit comprises an electromagnetic field generating unit and an induction unit, the electromagnetic field generating unit is used for generating an alternating electromagnetic field, and the induction unit is used for receiving an electromagnetic response signal generated by a welding core of the welding rod; The infrared ranging and positioning units are arranged in the same number and in one-to-one correspondence with the electromagnetic induction positioning units and are uniformly distributed along the circumferential direction of the annular mounting frame, each infrared ranging and positioning unit comprises an infrared transmitting unit and an infrared receiving unit, the infrared transmitting unit is used for transmitting infrared ranging signals, and the infrared receiving unit is used for receiving reflected infrared signals and generating ranging data related to the positions of the outer surfaces of the medicine skins; the data synchronization and fusion processing module is used for synchronously acquiring electromagnetic response signals of the electromagnetic induction positioning unit and distance measurement data of the infrared distance measurement positioning unit, mapping the two groups of data to the same reference section coordinate system and establishing a position corresponding relation between the welding core and the coating; The eccentric calculation and result output module comprises an eccentric calculation module and a result output module, wherein the eccentric calculation module is used for solving the eccentricity and the eccentric direction based on the central coordinates of the welding core and the outer circle of the explosive skin, and the result output module is used for outputting the eccentric parameters and the variation trend in real time.
2. The welding rod eccentricity online measurement system based on the fusion of electromagnetic induction and infrared ranging is characterized in that the electromagnetic field generating unit and the induction unit are integrally arranged into an integral structure or are arranged independently of each other, and the infrared emission unit and the infrared receiving unit are integrally arranged or are arranged independently of each other.
3. The welding rod eccentric online measurement system based on the combination of electromagnetic induction and infrared ranging according to claim 2, further comprising a welding rod conveying mechanism, wherein the welding rod conveying mechanism comprises a feeding roller group, a guiding component and a driving motor and is used for ensuring that a welding rod keeps a linear motion track in the welding rod channel conveying process.
4. The welding rod eccentric online measurement system based on the fusion of electromagnetic induction and infrared ranging according to claim 3, wherein the welding rod eccentric online measurement working process comprises the following steps: s1, constructing a measurement coordinate system, and establishing a reference section coordinate system by taking the center of a circle of an annular mounting frame of a measurement frame as an origin; S2, detecting the position of a welding core, uniformly arranging a plurality of electromagnetic induction positioning units in the circumferential direction of a welding rod, keeping a non-contact induction distance between the electromagnetic induction positioning units and the welding rod, generating an alternating electromagnetic field through an electromagnetic field generating unit to enable the welding core made of conductive metal materials to generate an eddy current effect, receiving an electromagnetic response signal by utilizing the induction units, and inverting to obtain the position information of the welding core in a coordinate system based on the negative correlation relation between the signal intensity and the distance between the welding core; S3, detecting the positions of the coating, arranging infrared ranging and positioning units in one-to-one correspondence with the electromagnetic induction positioning units in the circumferential direction of the same measuring section of the welding rod, transmitting infrared signals through the infrared transmitting units, receiving reflected signals of the outer surface of the coating by the infrared receiving units, generating ranging data based on the reflected signals, and fitting to obtain the position information of the outer circle of the coating in a coordinate system; Step S4, data synchronization fusion, wherein the welding core position information and the coating position information are mapped to the same reference section coordinate system through a data synchronization and fusion processing module, and a spatial corresponding relation between the welding core position information and the coating position information is established; and S5, calculating eccentric parameters, namely calculating the eccentricity and the eccentric direction of the welding rod based on the central coordinates of the welding core and the central coordinates of the outer circle of the coating, solving the eccentricity through a formula between two points, and determining the eccentric direction through the angle relation of the coordinate difference.
5. The welding rod eccentric online measurement system based on the fusion of electromagnetic induction and infrared ranging, as set forth in claim 4, is characterized in that the acquisition of the welding core position information in the step S2 comprises the steps of acquiring projection distance data through two groups of oppositely arranged electromagnetic induction positioning units, and calculating the offset of the welding core center in the directions of the x axis and the y axis of a coordinate system based on the projection distance data, wherein the specific formula is as follows: ; ; obtaining the central coordinates of the welding core: Wherein, the method comprises the steps of, 、、 And The projection distance from the electromagnetic induction positioning unit to the welding core is divided into 0 degree, 90 degree, 180 degree and 270 degree directions; obtaining measured diameter of core wire : 。
6. The welding rod eccentric online measurement system based on electromagnetic induction and infrared ranging fusion of claim 5, wherein the acquisition of the position information of the traditional Chinese medicine coating in the step S3 comprises the steps of acquiring ranging data through two groups of infrared ranging positioning units which are oppositely arranged, and calculating the offset of the outer circle center of the coating in the directions of the x axis and the y axis of a coordinate system and the measured diameter of the coating based on the ranging data, wherein the specific formula is as follows: ; ; Obtaining the center coordinates of the coating: Wherein 、、 And The distance from the infrared ranging and positioning unit to the surface of the coating is divided into 0 DEG, 90 DEG, 180 DEG and 270 DEG; Obtaining the measured diameter of the coating : 。
7. The welding rod eccentricity online measurement system based on electromagnetic induction and infrared ranging fusion according to claim 6, wherein the calculation formula of the eccentricity e in the step S5 is as follows: ; The calculation formula of the eccentricity p of the welding rod is as follows: 。

Description

Welding rod eccentric on-line measuring system based on electromagnetic induction and infrared ranging fusion Technical Field The invention belongs to the technical field of quality detection in a welding material manufacturing process, and particularly relates to an on-line welding rod eccentricity measuring system based on electromagnetic induction and infrared ranging fusion. Background The welding rod consists of a coating and a welding core, wherein the welding core is made of metal materials, the coating is formed by mixing various mineral substances, iron alloy, organic matters and the like according to a certain proportion, and the coating is wrapped outside the welding core and is used for protecting electric arcs, improving the weld performance and the like in the welding process. The eccentricity of the welding rod is a phenomenon that an offset exists between the axis of the welding core and the axis of the outer circle of the coating, and the offset can lead to arc offset and unstable combustion in the welding process, so that the forming quality of a welding seam is reduced, and therefore, the accurate detection of the eccentricity of the welding rod is a key link for guaranteeing the welding quality. The existing welding rod eccentricity detection method mainly comprises a mechanical rotary contact measurement method, an optical measurement method based on outer diameter runout and a destructive section analysis method. Wherein, the mechanical rotary contact measurement method needs to make the welding rod rotate, the optical measurement method based on the runout of the outer diameter needs to infer the eccentric condition through the change of the outer diameter, and the destructive cross section analysis rule belongs to an off-line detection mode, and the method generally has the following problems: 1. The online detection of the production line is difficult to realize, the mechanical rotary contact measurement method needs to rotate the welding rod, the destructive section analysis method needs to stop for sampling, and the continuous detection requirement of the production line cannot be met; 2. The detection accuracy is limited, namely, the eccentricity is inferred only through the change of the outer diameter by an optical measurement method based on the runout of the outer diameter, and when the outer diameter of the coating is uniform but the welding core is deviated, the accurate detection cannot be realized; 3. The real space position relation cannot be obtained, namely the real space positions of the welding core and the outer diameter of the coating are difficult to obtain simultaneously by the existing method, so that the physical meaning of eccentric detection is incomplete, and the detection result is not comprehensive. Disclosure of Invention The invention mainly aims to provide an on-line measuring system for the eccentricity of a welding rod based on fusion of electromagnetic induction and infrared ranging, and aims to solve the technical problems that the existing method for detecting the eccentricity of the welding rod cannot realize on-line continuous measurement, the detection accuracy is limited, and the real spatial position relation between a welding core and a coating is difficult to obtain. In order to achieve the above purpose, the invention provides an on-line measuring system for welding rod eccentricity based on fusion of electromagnetic induction and infrared ranging, comprising: the measuring frame is provided with an annular mounting frame and a welding rod channel, wherein the center line of the welding rod channel is collinear with the center of the circle of the annular mounting frame so as to ensure that the measuring section is vertical to the axis of the welding rod; The electromagnetic induction positioning units are uniformly distributed along the circumferential direction of the annular mounting frame and keep a non-contact induction distance with the welding rod, each electromagnetic induction positioning unit comprises an electromagnetic field generating unit and an induction unit, the electromagnetic field generating unit is used for generating an alternating electromagnetic field, and the induction unit is used for receiving an electromagnetic response signal generated by a welding core of the welding rod; The infrared ranging and positioning units are arranged in the same number and in one-to-one correspondence with the electromagnetic induction positioning units and are uniformly distributed along the circumferential direction of the annular mounting frame, each infrared ranging and positioning unit comprises an infrared transmitting unit and an infrared receiving unit, the infrared transmitting unit is used for transmitting infrared ranging signals, and the infrared receiving unit is used for receiving reflected infrared signals and generating ranging data related to the positions of the outer surfaces of the medicine skins; the data synchron