CN109142445B - Enameled wire defect online detection method and detection device, computer device and computer readable storage medium - Google Patents
Enameled wire defect online detection method and detection device, computer device and computer readable storage medium Download PDFInfo
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- CN109142445B CN109142445B CN201810916476.8A CN201810916476A CN109142445B CN 109142445 B CN109142445 B CN 109142445B CN 201810916476 A CN201810916476 A CN 201810916476A CN 109142445 B CN109142445 B CN 109142445B
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Abstract
The invention discloses an enameled wire defect online detection method and a detection device, a computer device and a computer readable storage medium, wherein the method comprises the steps of receiving set defect detection conditions, wherein the defect detection conditions comprise the length of a detection unit and the information of preset defect conditions; receiving data sent by enameled wire defect online detection equipment, judging whether the defect of a preset defect condition appears on the surface of the enameled wire currently detected within the length of a detection unit according to the data sent by the detection equipment, and if so, sending alarm information; wherein the preset defect condition comprises at least one of the following: the number of the first particles larger than the first particle size is larger than a first value, and the number of the second particles larger than the second particle size and smaller than the first particle size is larger than a second value. The invention also provides a detection device, a computer device and a computer readable storage medium for realizing the method. The invention can improve the detection efficiency of the enameled wire defects and improve the accuracy of the enameled wire detection.
Description
Technical Field
The invention relates to the field of enameled wire defect detection, in particular to an enameled wire defect online detection method, a device for realizing the method, a computer device applying the method and a computer readable storage medium.
Background
The enameled wire is an electric wire used for a winding of an electric machine, and generally, the enameled wire includes a copper wire and an insulating varnish wrapped on an outer surface of the copper wire, as shown in fig. 1, the enameled wire includes an elongated copper wire 10, and generally, a diameter of the copper wire 10 is between 0.2 mm and 2.0 mm. When the enameled wires are wound on the framework of the motor stator, the enameled wires are in contact with each other, and in order to realize mutual insulation among the enameled wires, a layer of insulating paint 11 needs to be wrapped outside the copper wire 10.
However, when the enamel coating apparatus for enamel wire coats the enamel, it is difficult to ensure smooth and flat surface of the enamel, for example, due to the existence of defects on the surface of the copper wire 10, damage of the drawn wire, contamination of impurities of the bare wire, foreign materials, defects in the coating process and the paint itself, there is a possibility that particles or pinholes are formed on the surface of the enamel 11. For example, the particles 12 having a small particle size, the particles 13 having a large particle size, or the pin holes 14 having a large leakage current may be formed, and the pin holes 14 are defects in electrical properties formed on the surface of the enamel wire. The formed particles and pinholes are common defects of the enameled wire. Since such defects on the surface of the enamel wire affect the insulation or electrical properties of the enamel wire, it is necessary to perform defect inspection on the surface of the enamel wire after the application of the enamel wire.
Generally, an enameled wire manufacturer uses an enameled wire defect online detection device to detect particles and pinholes on the surface of an enameled wire, and for example, a device for detecting the particles and pinholes on the surface of the enameled wire is disclosed in the chinese utility model with the patent number CN 201520721608.3. The existing online detection equipment utilizes two detection head pieces which are contacted with the surface of the enameled wire to sense particles and pinholes on the surface of the enameled wire, when current flows through the pinholes, the numerical value of leakage current exceeds a preset threshold value, at the moment, data obtained by detection can be fed back to a computer system, and the computer device judges whether a set defect condition is met or not after receiving the data.
However, since the information of the defect condition is preset, for example, alarm conditions of large particles, small particles and pin holes occurring within 30 meters or 100 meters are preset, these conditions often cannot meet the requirements of production setting, and unnecessary waste or excessive abnormal products are easily caused to flow out. If a manufacturer needs to set more alarm conditions for enameled wire production, manual identification and judgment of production operation staff are needed, namely, manual data of online detection equipment needs to be compared and analyzed, so that the working efficiency of enameled wire defect detection is low, the risk of human judgment errors exists, and the qualified rate of products is influenced.
Disclosure of Invention
The invention aims to provide an enameled wire defect online detection method which can set detection conditions independently by a manufacturer.
The second purpose of the invention is to provide an enameled wire defect online detection device which can improve the detection efficiency and reduce the risk of manual judgment.
The third purpose of the present invention is to provide a computer device capable of implementing the above method for detecting defects of enameled wires on line.
The fourth purpose of the present invention is to provide a computer readable storage medium capable of implementing the above method for on-line detecting defects of enameled wires.
In order to achieve the first object, the method for on-line detecting the defect of the enameled wire provided by the invention comprises the steps of receiving a set defect detection condition, wherein the defect detection condition comprises the length of a detection unit and the information of a preset defect condition; receiving data sent by enameled wire defect online detection equipment, judging whether the defect of a preset defect condition appears on the surface of the enameled wire currently detected within the length of a detection unit according to the data sent by the detection equipment, and if so, sending alarm information; wherein the preset defect condition comprises at least one of the following: the number of the first particles larger than the first particle size is larger than a first value, and the number of the second particles larger than the second particle size and smaller than the first particle size is larger than a second value.
According to the scheme, an enameled wire manufacturer can set defect conditions according to actual requirements, such as the length of the detection unit and the type of the defect. Therefore, the detection system can judge whether the enameled wire currently detected has the preset defect according to the data sent by the enameled wire defect online detection equipment.
Preferably, the predetermined defect condition comprises at least: the number of the pinholes of which the detected leakage current is larger than the preset leakage current is larger than a third numerical value; alternatively, the preset defect conditions individually include at least: the sum of the first particles and the second particles is greater than a fourth value.
Therefore, enameled wire manufacturers can preset various detection conditions according to actual needs, such as the number of large particles in a detection unit length, the number of small particles, the number of pinholes and the like.
Further, the receiving the set defect detection condition includes: receiving a plurality of sets of defect detection conditions, wherein each set of defect detection conditions comprises information of a detection unit length and information of a preset defect condition, the detection unit length of each set of defect detection conditions is different from the detection unit length of another set of defect detection conditions, and the preset defect condition of each set of defect detection conditions is different from the preset defect condition of another set of defect detection conditions.
Further, the judging whether the defect of the preset defect condition occurs within the length of the detection unit on the surface of the enameled wire currently detected includes: and judging whether the defects of the group of preset defect conditions appear in the length of any group of detection units on the surface of the enameled wire currently detected.
Therefore, an enameled wire manufacturer can set a plurality of groups of defect detection conditions according to actual production requirements, can judge whether any one group of defect detection conditions occur after receiving data of enameled wire defect online detection equipment, and can send alarm information when determining that any one group of defect conditions occur, so that the requirement of the enameled wire manufacturer on detecting various defect detection conditions can be met.
In order to achieve the second objective, the present invention further provides an enameled wire defect online detection apparatus, which includes a defect detection condition receiving module, configured to receive a set defect detection condition, where the defect detection condition includes information of a detection unit length and a preset defect condition; the judging module is used for receiving data sent by the enameled wire defect online detection equipment and judging whether the defect of a preset defect condition appears on the surface of the enameled wire currently detected within the length of the detection unit according to the data sent by the detection equipment; the alarm module is used for sending alarm information when the defect of a preset defect condition appears on the surface of the enameled wire detected currently within the length of the detection unit; wherein the preset defect condition comprises at least one of the following: the number of first particles larger than the first particle size is larger than a first value, the number of second particles larger than a second particle size and smaller than the first particle size is larger than a second value, the number of pinholes of the detected leakage current larger than a preset leakage current is larger than a third value, and the sum of the first particles and the second particles is larger than a fourth value.
In order to achieve the third object, the present invention further provides a computer device including a processor and a memory, wherein the memory stores a computer program, and the computer program is executed by the processor to implement the steps of the online enameled wire defect detecting method.
In order to achieve the fourth object, the present invention further provides a computer readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the steps of the method for detecting defects of an enameled wire on line.
Drawings
Fig. 1 is a schematic structural view of an enamel wire having a defect on the surface.
FIG. 2 is a flow chart of an embodiment of the method for on-line detecting defects of the enameled wire of the invention.
FIG. 3 is a block diagram of the structure of the on-line enameled wire defect detecting device according to the embodiment of the present invention.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
The enameled wire defect online detection method is used for detecting and analyzing the defects on the surface of the enameled wire, such as detecting the number of large particles, small particles and pinholes on the surface of the enameled wire. The enameled wire defect online detection device can realize the enameled wire defect online detection method. The computer readable storage medium of the present invention can be various storage media having data storage function, including but not limited to non-volatile memories such as FLASH, EEPROM, etc.
The embodiment of the method for detecting the defects of the enameled wire on line comprises the following steps:
the method for detecting the defects of the enameled wire can be installed on a computer, such as a computer for monitoring the surface defects of the enameled wire.
In the production process of the enameled wire, particles protruding outwards may appear in the insulating varnish coated on the copper wire, and if the particle size of the particles is larger than a certain value, the performance of the enameled wire is affected, so that the particles on the surface of the enameled wire need to be detected. The existing enameled wire defect online detection equipment detects the particle condition of the surface of an enameled wire by detecting the flatness of the surface of the enameled wire. In this embodiment, particles having a particle size larger than the first particle size are referred to as large particles, for example, particles having a particle size larger than 0.2 mm are referred to as large particles. And particles having a particle size larger than the second particle size and smaller than the first particle size are referred to as small particles, for example, particles having a particle size of less than 0.2 mm but larger than 0.1 mm are referred to as small particles. The number of the large particles and the small particles is detected by enameled wire defect online detection equipment. Of course, the particle diameters of the large particles and the small particles may be adjusted according to the actual production requirements, for example, the diameter of the copper wire of the enamel wire is small, the particle diameters of the large particles and the small particles may be set to a small value, and if the diameter of the copper wire of the enamel wire is large, the particle diameters of the large particles and the small particles may be set to a large value.
In addition to the detection of large particles and small particles on the surface of the enameled wire, the detection of pinholes on the surface of the enameled wire is also required, for example, the detection of pinholes with a leakage current greater than a preset value on the surface of the enameled wire, such as the detection of pinholes with a leakage current greater than 10 microamperes. Therefore, the online enameled wire defect detection equipment needs to detect and count the number of large particles, small particles and pinholes on the surface of the enameled wire.
In this embodiment, the manufacturer may preset the detection conditions according to actual needs, for example, execute step S1, and set the defect detection conditions on the computer for detection, for example, set multiple sets of defect detection conditions, where each set of defect detection conditions includes the length of the detection unit and information of the preset defect conditions, where the preset defect conditions include the number of large particles, the number of small particles, and the number of pinholes in the detection unit length, and may also include the sum of the number of large particles and the number of small particles.
For example, in the first set of defect detection conditions, the length of the detection unit is 30 meters, and the preset defect conditions are: the number of large particles is more than 4, the number of small particles is more than 5, the number of pinholes is more than 5, and the sum of the number of large particles and the number of small particles is more than 5. Therefore, the first set of defect detection conditions is that on an enameled wire which is 30 meters long continuously, if any one of the preset defect conditions occurs, the enameled wire is considered to be abnormal, and a warning message needs to be sent out. For example, if 3 large particles and 3 small particles appear on a continuous 30-meter-long enameled wire and 2 pinholes appear, it is necessary to send out a warning message and indicate that the defect type, i.e., the sum of the number of large particles and the number of small particles is greater than 5.
For another example, in the second set of defect detection conditions, the length of the detection unit is 0.3 m, and the preset defect conditions are: the number of large particles is more than 3, the number of small particles is more than 4, the number of pinholes is more than 4, and the sum of the number of large particles and the number of small particles is more than 4. Any one of the defects appears on the surface of the enameled wire with continuous 0.3 m, and alarm information needs to be sent out.
For another example, in the third set of defect detection conditions, the length of the detection unit is 500 meters, and the preset defect conditions are: the number of large particles is more than 15, the number of small particles is more than 15, the number of pinholes is more than 15, and the sum of the number of large particles and the number of small particles is more than 15. Any one of the defects appears on the surface of the enameled wire with the length of 500 meters continuously, and alarm information needs to be sent out.
It can be seen that the detection unit lengths of each set of defect detection conditions are different, and the defect detection conditions of each set are set differently for the numbers of large particles, small particles, and pinholes. In general, the number of large particles, small particles, and pinholes is set in proportion to the detection cell length, i.e., the larger the detection cell length, the larger the number of large particles, small particles, and pinholes.
After the manufacturer sets various defect detection conditions, a computer device for detecting the surface defects of the enameled wire records the defect detection conditions. Then, step S2 is executed to receive the data sent by the on-line enameled wire defect detecting device. The enameled wire defect online detection equipment detects the defects of the enameled wire surface in real time, namely, the positions of large particles, small particles and pinholes on the enameled wire surface are detected, detected data are transmitted to the computer in real time, and the computer receives the data sent by the enameled wire defect online detection equipment in real time.
Then, the computer performs the step S3 to determine whether the defect inspection condition set in the step S1, specifically, any one set of the defect inspection conditions set in the step S1, is present according to the data transmitted from the on-line defect inspecting apparatus for enamel wire. Since a plurality of sets of defect detection conditions are set in step S1, the computer determines whether any one set of defect detection conditions has occurred based on the received data in step S3.
For example, the first set of defect detection conditions is to detect whether any of the following occurs within a continuous 30 meter inspection cell length: the number of the large particles is more than 4, the number of the small particles is more than 5, the number of the pinholes is more than 5, or the sum of the number of the large particles and the number of the small particles is more than 5, if any one of the above conditions occurs, the abnormality of the enameled wire currently detected can be determined.
As another example, the second set of defect detection conditions is when any of the following occurs within 0.3 meters of the length of the detection cell: and determining that the abnormal condition of the enameled wire detected currently occurs, wherein the number of large particles is more than 3, the number of small particles is more than 4, the number of pinholes is more than 4, or the sum of the number of large particles and the number of small particles is more than 4.
And if the enameled wire is determined to be abnormal in the step S3, executing a step S4 and sending alarm information. Wherein, alarm information can be that show warning words on the display screen, perhaps send alarm sound through the speaker, perhaps send warning light again through the LED lamp. Preferably, the computer, when determining that the enameled wire has an abnormal condition, also reports the type of the abnormal condition, for example, displays on a display screen which defect of which set of defect detection conditions the enameled wire has, for example, the sum of the number of large particles and small particles in 30 consecutive meters exceeds 5.
If it is determined that the defect detecting condition does not occur on the surface of the enamel wire, the step S5 is directly performed.
And finally, executing step S5, determining whether the enameled wire defect online detection device stops working, that is, determining whether the enameled wire has been detected completely, if the enameled wire has stopped working, ending the process, if the enameled wire has not stopped working, continuing to return to step S2, and the computer continues to receive the data sent by the enameled wire defect online detection device and determines the defect on the surface of the enameled wire according to the received data. After the computer sends alarm information, an operator on the enameled wire production line immediately carries out disc changing operation according to the defect position of the enameled wire, namely, one section of the enameled wire with abnormity is subtracted.
According to the invention, multiple groups of defect detection conditions can be set by an enameled wire manufacturer, and the computer can detect the defects of the enameled wire under various different conditions, so that the operation of manual judgment can be greatly reduced, the production efficiency of the enameled wire is improved, the misjudgment rate caused by manual judgment is reduced, and the qualified rate of the enameled wire is improved.
The embodiment of the enameled wire defect online detection device comprises:
referring to fig. 3, the on-line enameled wire defect detecting apparatus of the present embodiment is a computer program running on a computer, and the apparatus includes a defect detecting condition receiving module 21, a judging module 22, and an alarming module 23.
The defect detecting condition receiving module 21 is configured to receive one or more groups of predetermined defect detecting conditions, preferably, the defect detecting conditions are determined by an enameled wire manufacturer according to actual production needs, and each group of defect detecting conditions includes a detecting unit length and a preset defect condition. Wherein the default defect condition in each set of defect detection conditions comprises at least one of: the number of large particles, the number of small particles, pinhole data, and the sum of the number of large particles and small particles.
The judging module 22 is configured to receive data sent by the on-line enameled wire defect detecting device, where the data includes data of large particles, small particles, or pinholes appearing at any position of the enameled wire, and after receiving the data, the computer judges whether a defect of a preset defect condition received by the defect detecting condition receiving module 21 appears on the surface of the enameled wire currently detected within a length of a detecting unit.
Specifically, the judging module 22 needs to judge whether the defect set by any set of defect detecting conditions appears on the surface of the currently detected enameled wire, and since each set of defect detecting conditions includes the detecting unit length and the preset defect condition, the judging module 22 judges whether the defect of the set of preset defect conditions appears in any set of detecting unit length on the surface of the currently detected enameled wire, and considers that the surface of the enameled wire is abnormal.
For example, when the number of the small particles is 5 in 0.3 m, it is determined that the surface of the enamel wire is abnormal. Or, if the total number of large particles and small particles is 16 within 500 continuous meters, the surface of the enameled wire is determined to be abnormal.
The alarm module 23 is configured to send an alarm message when it is determined that an abnormality occurs on the surface of the currently detected enameled wire, that is, when the determination result of the determination module 22 is abnormal. Specifically, the alarm information may be a warning word displayed on the display screen, and a specific defect type is displayed. Alarm information can also be sound alarm information or light alarm information, if sound alarm information is established, can report out specific defect type through the mode of pronunciation.
The embodiment of the computer device comprises:
the computer device of this embodiment may be a PC, a tablet computer, etc., and is provided with a processor and a memory, where the memory stores a computer program, the computer program can be read and executed by the processor, and the processor executes the computer program to implement the above steps of the online enameled wire defect detection method.
For example, the computer program may be divided into one or more modules, one or more modules are stored in the memory and executed by the processor, and one or more modules may be a series of computer program instruction segments capable of performing specific functions, the instruction segments describing the execution process of the computer program in the terminal device.
The Processor may be a Central Processing Unit (CPU), or may be other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the terminal device and connecting the various parts of the entire terminal device using various interfaces and lines.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the terminal device by running or executing the computer programs and/or modules stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Computer-readable storage medium embodiments:
the method for detecting the defect of the enameled wire in the online manner is realized by a computer program, and the computer program can be stored in a computer readable storage medium. Based on such understanding, all or part of the processes of the method for detecting the defect of the enameled wire according to the above embodiment of the present invention can also be completed by using a computer program to instruct related hardware, where the computer program can be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of the method for detecting the defect of the enameled wire can be realized.
Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like.
Of course, the above-mentioned embodiments are only preferred embodiments of the present invention, and the practical application may be further modified, for example, the modification of the defect detection condition, or the modification of the on-line defect detection equipment for enameled wire used, etc., which do not affect the implementation of the present invention, and should be included in the protection scope of the present invention.
Claims (6)
1. The enameled wire defect online detection method is characterized by comprising the following steps:
receiving multiple preset groups of defect detection conditions, wherein each group of defect detection conditions comprises information of detection unit length and information of preset defect conditions, the detection unit length of each group of defect detection conditions is different from that of another group of defect detection conditions, and the preset defect conditions of each group of defect detection conditions are different from that of another group of defect detection conditions;
receiving data sent by enameled wire defect online detection equipment, and judging whether the defects of the group of preset defect conditions appear in the length of any group of detection units on the surface of the enameled wire currently detected according to the data sent by the detection equipment, if so, sending alarm information;
wherein the preset defect condition comprises at least one of: the number of the first particles larger than the first particle size is larger than a first value, and the number of the second particles larger than the second particle size and smaller than the first particle size is larger than a second value.
2. The enameled wire defect online detection method according to claim 1, characterized in that:
the preset defect conditions individually include at least: the number of pinholes for which the detected leakage current is greater than the preset leakage current is greater than a third value.
3. The enameled wire defect online detection method according to claim 1 or 2, characterized in that:
the preset defect conditions individually include at least: the sum of the first particles and the second particles is greater than a fourth value.
4. Enameled wire defect on-line measuring device, its characterized in that includes:
a defect detection condition receiving module, configured to receive multiple preset sets of defect detection conditions, where each set of defect detection conditions includes information on a detection unit length and information on a preset defect condition, the detection unit length of each set of defect detection conditions is different from the detection unit length of another set of defect detection conditions, and the preset defect condition of each set of defect detection conditions is different from the preset defect condition of another set of defect detection conditions;
the judging module is used for receiving data sent by the enameled wire defect online detection equipment and judging whether the defects of the group of preset defect conditions appear on the surface of the enameled wire currently detected within the length of any group of detection units according to the data sent by the detection equipment;
the alarm module is used for sending alarm information when the defect of the preset defect condition appears on the surface of the enameled wire detected currently within the length of the detection unit;
wherein the preset defect condition comprises at least one of: the number of first particles larger than the first particle size is larger than a first value, the number of second particles larger than a second particle size and smaller than the first particle size is larger than a second value, the number of pinholes of detected leakage current larger than preset leakage current is larger than a third value, and the sum of the first particles and the second particles is larger than a fourth value.
5. Computer arrangement comprising a processor and a memory, wherein the memory stores a computer program, and the computer program when executed by the processor implements the steps of the method for on-line detecting defects in enameled wires according to any one of claims 1 to 3.
6. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program is executed by a processor to realize the steps of the method for detecting defects of the enameled wire according to any one of claims 1 to 3 on line.
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| CN113916940B (en) * | 2021-09-14 | 2022-05-10 | 广东精达里亚特种漆包线有限公司 | Varnish nodule detection method and system for enameled wire |
| CN113963858A (en) * | 2021-11-27 | 2022-01-21 | 武汉纺织大学 | A defect monitoring device for flat enameled wire production and processing |
| CN117607166A (en) * | 2023-11-24 | 2024-02-27 | 长沙湘鸿仪器机械有限公司 | Online monitoring system for surface defects of enameled wire |
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