KR102591551B1 - Short turn detection automation device and detection method based on precise control having a display unit - Google Patents

Abstract

One embodiment of the present invention detects shorts that occur between each turn of a rotor core used in a generator, etc. based on induced current, detects short turns continuously/sequentially for multiple cores, and changes the color of the display portion of the LED, etc. It relates to a precision control-based automatic short turn detection device and detection method equipped with a display unit that can more accurately determine the location of the short turn.

Description

Precision control-based short turn detection automation device and detection method with display unit {SHORT TURN DETECTION AUTOMATION DEVICE AND DETECTION METHOD BASED ON PRECISE CONTROL HAVING A DISPLAY UNIT}

The following embodiments detect shorts that occur between each turn of a rotor core used in a generator, etc. based on induced current, but detect short turns continuously/sequentially for multiple cores, and detect short turns through the color of the display unit such as the LED. It relates to a precision control-based automatic short turn detection device and detection method equipped with a display unit that can more accurately determine the position of the turn.

In general, a generator is a very important component among power generation facilities such as thermal power plants, hydroelectric power plants, and nuclear power plants. A generator is a device that converts mechanical rotational energy into electrical energy, and includes direct current generators, synchronous generators, and induction generators.

A generator typically consists of a stator, rotor, bearing, and exciter. Here, the rotor refers to the rotating part of a rotating machine such as a generator. This rotor has a coil wound around it to generate electricity through rotation, and this is called a rotor coil.

Such a rotor coil may be formed of several turns. In this case, if each turn of the rotor coil touches each other and becomes short-circuited, excessive current may flow inside the coil, resulting in an electrical accident, fire, etc. Turns that are shortened by touching each other like this are called short turns.

Conventional prior technologies used a method of measuring current by flowing it directly to an actual coil, and it was difficult to detect short turns before use. In addition, mass inspection was difficult because complex circuit steps had to be performed.

Accordingly, the present invention seeks to provide a short-turn detector that can check whether a coil is short-circuited before use by indirectly passing current through the coil and confirm the location of the short-turn.

Meanwhile, the prior patent has the advantage of detecting short turns while preventing damage to the coil by detecting short turns based on induced current, but due to the structure of the device, it is difficult to inspect multiple coils continuously/sequentially, Although it is possible to check whether a short turn occurred, there is a limitation in that it is difficult to accurately determine where the short turn occurred in the coil.

KR 10-1885325 B KR 10-1885333 B

The problem to be solved by an embodiment of the present invention is to prevent damage to the coil in the process of detecting short turns of the coil, to overcome the limitations of the conventional short turn detection device as described above, and to continuously connect/connect multiple coils. The aim is to provide a precision control-based automatic short turn detection device and detection method that can automate the process by sequentially inspecting the coil and has a display unit that can determine where the short turn occurred in the coil.

According to one embodiment, a precision control-based short turn detection automated device for detecting a short circuit in a coil includes: a conveyor belt transporting a plurality of coils; A magnetic field generating device disposed at a distance from the upper part of the conveyor belt; current measuring device; a height adjustment device that adjusts the height of the magnetic field generating device with respect to the conveyor belt; Including a position sensor disposed at the top of the conveyor belt to detect the position of the coil seated on the conveyor belt, sequentially operating the magnetic field generating device for a plurality of coils transported along the conveyor belt, and By measuring the current flowing in the coil with a current measuring device, short turns are sequentially detected for a plurality of coils, and the current measuring device: When the current flowing in the coil is greater than a predetermined first standard, the first color and Provided is a precision control-based short turn detection automated device having a display unit, including a display unit that lights up in one of the second colors.

In addition, the magnetic field generating device is composed of: at least six or more even number of first magnetic field generating units; are arranged radially, and among the first magnetic field generating units, they are located in opposite directions. A pair of second magnetic field generators are lowered by the height adjustment device to detect a short turn of the coil, and a third magnetic field generator other than the second magnetic field generator among the first magnetic field generators adjusts the height. It is raised or maintained at a height by a device and is spaced apart from the coil or maintained in a spaced state, and the first magnetic field generator: bends a predetermined steel plate into a 'ㄷ' shape, a first iron plate portion located at the center, and a horseshoe portion consisting of a second iron plate portion extending from one end of the first iron plate portion and a third iron plate portion extending from the other end of the first iron plate portion; A solenoid part formed by being wound around the first iron plate part of the horseshoe part in one direction; and an electrode unit that supplies power to the solenoid unit, wherein the current measuring device is connected to an upper end of the first magnetic field generator and stops operating when power is supplied from the electrode unit to the solenoid. It operates when power is not supplied from the electrode unit to the solenoid and measures the current flowing in the solenoid, and the display unit: When the current flowing in the coil is measured as a 'first measurement value greater than the first reference', the Lights up in 1 color, and when the current flowing in the coil is measured as a 'second measurement value that is greater than the first standard and is different from the first measurement value by more than a predetermined second standard', it lights up in the second color. It may be configured to be controlled so that the color lit for each display unit is one of the first color and the second color.

And, the first and second measured values include: interpolating data measuring the current flowing through the coil to generate a current function with respect to time; Definitely integrating the current function with respect to time by dividing it into two sections based on the x-intercept; Designating a positive value among the definite integral values calculated by dividing them into two intervals as the 1-1 measurement value or the 2-1 measurement value; Designating a negative value among the definite integral values calculated by dividing them into two intervals as the 1-2 measurement value or the 2-2 measurement value; And calculating a first measurement value by adding the absolute values of the 1-1 measurement value and the 1-2 measurement value, or calculating a second measurement value by adding the absolute values of the 2-1 measurement value and the 2-2 measurement value. It may be configured to be calculated according to the step of calculating the value.

In addition, the height adjustment device includes: a guide connected to the top of the first magnetic field generator; A rail portion on which the guide is seated and which provides a path for the guide to move up and down in translation; A follower fixed to the guide; A cylindrical cam connected to the follower; a camshaft to which the cylindrical cam is fixed; and a first drive motor that rotates the camshaft; when the follower moves up and down along the groove formed in the cylindrical cam, a pair of second magnetic field generators located in opposite directions among the first magnetic field generators. At the same time as the magnetic field generator descends, the remaining third magnetic field generators among the first magnetic field generators excluding the second magnetic field generator are driven to rise or maintain their height, so that the first magnetic field generators sequentially pair by pair. It can be configured to repeat rising and falling.

In addition, the electrode unit includes: a power transmitting unit that receives power from a predetermined battery or commercial power source and is formed in a predetermined cylindrical shape; an insulating part fixed to one end of the power transmitting unit; a second drive motor connected to the insulating part and rotating the power transmitter eccentrically; a plurality of power receivers arranged radially at positions corresponding to the maximum rotation diameter of the eccentric rotation, and connected to or separated from the power transmitter; And a wire unit connecting the power receiver to each of the first magnetic field generators; Including, according to the eccentric rotation of the power transmitter, power is connected to only one of the plurality of power receivers, and the guide is : a linear actuator provided to horizontally translate the first magnetic field generator in a radial direction of the first circle based on a first circle formed following the point where the rail portion is disposed; provided with a diameter of the coil Accordingly, the linear actuator may be operated so that the diameter of the second circle formed after the first magnetic field generator corresponds to the diameter of the coil.

According to one embodiment, based on the induced current, short turns can be detected while preventing damage to the coil due to overcurrent.

Additionally, by continuously/sequentially inspecting multiple coils, the coil production and quality inspection process can be automated.

Additionally, it is possible to determine where the short turn occurred in the coil.

In addition, by sequentially alternating a plurality of magnetic field generators to approach the coil and inserting the coil inside the magnetic field generator, the magnitude of the induced current for each part of the coil can be measured.

Additionally, by selectively connecting power to one of the plurality of magnetic field generators, power can be supplied only to the magnetic field generator into which the coil is currently inserted.

And, by adjusting the position (radius) of the magnetic field generator, short turns can be detected for coils of various dimensions/standards/diameters.

In addition, by displaying the color of the display unit in one of two colors, the location of the short turn can be determined more accurately by finding the area (position) where the magnitude of the induced current differs by more than a predetermined standard compared to other areas.

Additionally, by integrating the function generated based on the measured value, the value of the induced current, which is measured slightly differently depending on the position of the short turn, can be more accurately compared.

Figure 1 is a diagram showing a magnetic field generating device and a current measuring device of a precision control-based short turn detection automation device equipped with a display unit according to an embodiment of the present invention.
Figure 2 is a diagram showing a precision control-based short turn detection automation device equipped with a display unit according to an embodiment of the present invention.
Figure 3 is a diagram showing a height adjustment device of a precision control-based automatic short turn detection device equipped with a display unit according to an embodiment of the present invention.
Figure 4 is a diagram showing the electrode unit of a precision control-based automatic short turn detection device equipped with a display unit according to an embodiment of the present invention.
Figure 5 is a diagram showing a guide for a precision control-based automatic short turn detection device equipped with a display unit according to an embodiment of the present invention.
Figure 6 is a diagram showing a current function generated by a precision control-based automatic short turn detection device equipped with a display unit according to an embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, various changes can be made to the embodiments, so the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents, or substitutes for the embodiments are included in the scope of rights.

Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosed form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Terms such as first or second may be used to describe various components, but these terms should be interpreted only for the purpose of distinguishing one component from another component. For example, a first component may be named a second component, and similarly, the second component may also be named a first component.

When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected or connected to the other component, but that other components may exist in between.

The terms used in the examples are for descriptive purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the embodiments belong. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

In addition, when describing with reference to the accompanying drawings, identical components will be assigned the same reference numerals regardless of the reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiments, if it is determined that detailed descriptions of related known technologies may unnecessarily obscure the gist of the embodiments, the detailed descriptions are omitted.

According to one embodiment, a precision control-based short turn detection automated device for detecting a short circuit in a coil includes: a conveyor belt (B) transporting a plurality of coils; A magnetic field generating device (1) disposed at a distance from the upper part of the conveyor belt (B); Current measuring device (2); Height adjustment device (3) for adjusting the height of the magnetic field generating device (1) with respect to the conveyor belt (B); A position sensor disposed on the upper part of the conveyor belt (B) to detect the position of the coil seated on the conveyor belt (B); sequentially for a plurality of coils transported along the conveyor belt (B). A precision control-based short turn detection automation device that sequentially detects short turns for a plurality of coils by operating the magnetic field generating device (1) and measuring the current flowing in the coil with the current measuring device (2). to provide.

Figure 1 shows a magnetic field generating device 1 (first magnetic field generating unit 11) and a current measuring device 2 according to an embodiment of the present invention.

As shown in FIG. 1, a magnetic field generator 11 may be coupled to the lower part of the current measuring device 2.

Since the driving/operation principles of the magnetic field generating device 1 and the current measuring device 2 are known technologies as described in prior patent documents, detailed descriptions thereof will be omitted.

Figure 2 shows the process of inspecting a plurality of coils along the conveyor belt (B).

A plurality of coils transported along the conveyor belt (B) sequentially pass through the magnetic field generator (1) and perform a short turn test. Figure 2 (a) shows a coil that has been inspected (CO1), a coil that is being inspected (CO2), and a coil before inspection (CO3).

The magnetic field generating device 1 is lowered and the coil under test (CO2) is inserted inside the horseshoe portion 110, which will be described later, and the induced current generated by the magnetic field generating device 1 is transmitted to the current measuring device 2. Detect short turns by measuring.

In the case of a normal coil without short turns, no induced current occurs and therefore no current is measured by the current measuring device (2).

After completing the short-turn test, the magnetic field generator (1) and the current measuring device (2) are transported and lifted upward, and the conveyor belt (B) is advanced to transport the tested coil (CO1) and the coil before the test. (CO3) is placed at the bottom of the magnetic field generating device (1). Afterwards, the magnetic field generating device 1 can be transferred to the lower part again to perform a short turn test.

Here, the height adjustment device 3 includes: a magnetic field generator to prevent interference with the coil passing through the conveyor belt B, separately from the magnetic field generator height alternating control structure based on the cylindrical cam 34, which will be described later. A structure that lifts the entire (1) and current measuring device (2) is also included. According to this structure, the state shown in FIG. 2(a) being inspected can be converted to the state shown in FIG. 2(b) where the inspection has been completed.

The position sensor detects whether the coil is placed in a position corresponding to the magnetic field generating device 1, and controls the conveyor belt B based on this to adjust the position of the coil.

In addition, the magnetic field generating device 1 is composed of: at least six or more even number of first magnetic field generating units 11; arranged radially, among the first magnetic field generating units 11, A pair of second magnetic field generators 12 located in opposite directions are lowered by the height adjustment device 3 to detect a short turn of the coil, and the first magnetic field generator 11 Among them, the third magnetic field generator 13, excluding the second magnetic field generator 12, is raised or maintained at a height by the height adjustment device 3 and is spaced or maintained in a spaced state from the coil. , the first magnetic field generator 11 is: a predetermined steel plate is bent into a 'ㄷ' shape, a first steel plate portion 1101 located at the center, and a second steel plate portion extending from one end of the first steel plate portion 1101. A horseshoe portion 110 composed of an iron plate portion 1102 and a third iron plate portion 1103 extending from the other end of the first iron plate portion 1101; A solenoid part 111 formed by being wound around the first iron plate part 1101 of the horseshoe part 110 in one direction; and an electrode unit 112 that supplies power to the solenoid unit 111, wherein the current measuring device 2 is connected to the top of the first magnetic field generator 11, and the electrode unit ( It may be configured to stop operation when power is supplied to the solenoid from 112) and to measure the current flowing in the solenoid by operating when power is not supplied to the solenoid from the electrode unit 112.

2, 3, and 5 show an embodiment in which eight first magnetic field generators 11 are provided.

Here, the first magnetic field generator 11 refers to a configuration having a series of structures including the horseshoe portion 110, the solenoid portion 111, and the electrode portion 112, and the second magnetic field generator ( 12) Among the first magnetic field generators 11, a pair of first magnetic field generators 11 are lowered by the height adjustment device 3 and the coil is inserted into the inside of the horseshoe portion 110. means. Among the first magnetic field generators 11, the second magnetic field generator 12 is raised or maintained at a raised height by the height adjustment device 3 to prevent the coil from being inserted into the inside of the horseshoe portion 110. The remaining first magnetic field generators 11 in an unused state, that is, in the embodiments of FIGS. 2, 3, and 5, mean six first magnetic field generators 11.

According to this structure, any second magnetic field generator 12 is designated as the third magnetic field generator 13 after a predetermined time (proceeding with a short turn inspection process) according to the operation of the height adjustment device 3, At this time, the other pair of the third magnetic field generators 13 is designated as the new second magnetic field generator 12.

In the short-turn inspection process, all first magnetic field generators 11 are designated as second magnetic field generators 12 at least twice (once as the side to which power is applied to the solenoid, and once as the side that measures the current). ) It can be controlled so that power is applied to the solenoids of each first magnetic field generator 11 at least once.

The state in which the first magnetic field generator 11 is radially disposed is shown in FIG. 5 .

As shown in FIGS. 2 and 3 (b), among the plurality of first magnetic field generators 11, one pair (opposite) is designated as the second magnetic field generator 12. Then, the second magnetic field generator 12 descends and the coil is inserted into the horseshoe portion 110.

The 'ㄷ' shape of the steel plate may be arranged so that the open portion faces downward, as shown in FIG. 1.

At this time, the current measuring device 2 is: connected to the top of the first magnetic field generating unit 11, stops operating when power is supplied to the solenoid from the electrode unit 112, and the electrode unit ( It operates when power is not supplied to the solenoid from 112) and measures the current flowing in the solenoid.

In other words, in the state shown in FIG. 2 (a), when power is applied to the solenoid of the second magnetic field generator 12 located on the left side of the drawing, the second magnetic field generator located on the right side of the drawing ( Power is not applied to the solenoid in 12), and the current measuring device 2 connected to the second magnetic field generator 12 located on the right side of the drawing operates to measure the current.

For example, in an embodiment in which eight first magnetic field generators 11 are provided, power is applied to each of the eight solenoids 111 once, and eight current measurements can be performed.

And, the height adjustment device 3 includes: a guide 31 connected to the top of the first magnetic field generator 11; A rail portion 32 on which the guide 31 is seated and which provides a path for the guide 31 to move up and down in translation; A follower (33) fixed to the guide (31); A cylindrical cam (34) connected to the follower (33); A camshaft 35 on which the cylindrical cam 34 is fixed; And a first drive motor that rotates the camshaft 35; When the follower 33 translates up and down along the groove 340 formed in the cylindrical cam 34, the first magnetic field generator ( 11), at the same time as the pair of second magnetic field generators 12 located in opposite directions descend, the rest of the first magnetic field generators 11, excluding the second magnetic field generator 12, The third magnetic field generator 13 may be driven to rise or maintain its height, so that the first magnetic field generator 11 may sequentially repeat rising and falling in pairs.

As shown in FIG. 3 (b), the guide 31, which moves up and down (up and down translation) along the follower 33 connected to the cylindrical cam 34, moves the first magnetic field generator 11 up and down. Round trip.

At this time, the groove 340 formed in the cylindrical cam 34 is located at the bottom of only one pair of the first magnetic field generators 11 (two opposing each other; the second magnetic field generator 12). and the remaining first magnetic field generators 11 (third magnetic field generators 13) must be formed so that they can be located at the top.

The first drive motor rotates by a predetermined angle to position a pair of second magnetic field generators 12 on the coil, and pauses while the second magnetic field generator 12 detects a short turn. After the short turn detection process is performed for a predetermined time, the first drive motor rotates again by a predetermined angle so that another pair of second magnetic field generators 12 are located in the coil, and this process is repeated to repeat all of the second magnetic field generators. 1 Each magnetic field generator 11 performs a short turn detection process.

In addition, the electrode unit 112 includes: a power transmission unit 1121 that receives power from a predetermined battery or commercial power source and is formed in a predetermined cylindrical shape; an insulating part fixed to one end of the power transmitting unit 1121; A second driving motor connected to the insulating part and eccentrically rotating the power transmitting unit 1121; A plurality of power receivers 1122 arranged radially at positions corresponding to the maximum rotation diameter of the eccentric rotation, connected to the power transmitter 1121 or arranged to separate from the power transmitter 1121; And a wire unit connecting the power receiver 1122 to each of the first magnetic field generators 11; Including, according to the eccentric rotation of the power transmitter 1121, a plurality of the power receivers 1122 It can be configured so that power is connected to only one of them.

Figure 4 shows the structure of the electrode unit 112.

As shown in FIG. 4 (a), the power transmitting unit 1121 can contact the power receiving unit 1122 located at the top of the drawing to supply power to a corresponding first magnetic field generating unit 11. As the power transmitter 1121 rotates eccentrically, as shown in FIG. 4 (b), the power transmitter 1121 contacts the power receiver 1122 located at 2 o'clock in the drawing and generates another first magnetic field corresponding thereto. Power can be supplied to unit 11.

Even if the position of the first magnetic field generator 11 changes due to the height adjustment device 3, the linear actuator 310 described later, etc., the power receiver 1122 and the first magnetic field generator 11 can be connected, It is preferable that the wire portion is configured to have a predetermined spare length.

In addition, the guide 31 includes: the first magnetic field generator in the radial direction of the first circle C1, based on a first circle C1 formed following the point where the rail portion 32 is disposed. A linear actuator 310 is provided to horizontally translate (11), and the linear actuator 310 is operated according to the diameter of the coil, thereby forming the first magnetic field generator 11. 2 It may be configured to be driven so that the diameter of the circle C2 corresponds to the diameter of the coil.

As shown in FIG. 5, the first magnetic field generator 11 is radially disposed along the second circle C2, and moves the second circle C2 according to the driving of the linear actuator 310. The radius/diameter is configured to be adjustable.

At this time, as shown in FIG. 1, the upper extension part 20 extending from the upper end of the first magnetic field generator 11/current measuring device 2 is fixed to one end of the linear actuator 310, and the The body of the guide 31 may be fixed to the other end of the linear actuator 310.

According to this structure, when the body of the guide 31 moves up and down along the rail portion 32, the upper extension portion 20 spaced apart from the body of the guide 31 along the linear actuator 310 to the first magnetic field The generator 11 thus moves up and down in translation.

Figure 5 (a) shows a state in which a coil with a relatively small radius is measured, and Figure 5 (b) shows a state in which the linear actuator 310 is extended in length to measure a coil with a relatively large radius. there is.

According to one embodiment, a precision control-based short turn detection automated device for detecting a short circuit in a coil includes: a conveyor belt (B) transporting a plurality of coils; A magnetic field generating device (1) disposed at a distance from the upper part of the conveyor belt (B); Current measuring device (2); Height adjustment device (3) for adjusting the height of the magnetic field generating device (1) with respect to the conveyor belt (B); A position sensor disposed on the upper part of the conveyor belt (B) to detect the position of the coil seated on the conveyor belt (B); sequentially for a plurality of coils transported along the conveyor belt (B). By operating the magnetic field generating device (1) and measuring the current flowing in the coil with the current measuring device (2), short turns are sequentially detected for a plurality of coils, and the current measuring device (2): A display unit that lights up in one of a first color and a second color when the current flowing through the coil is greater than or equal to a predetermined first standard. A precision control-based short turn detection automation device including a display unit is provided. .

The display unit lights up only when the current is measured. However, in order to prevent the case where a very small current is measured due to disturbance, etc. from being mistaken for a short turn, it is controlled to light only when a current greater than the first standard, which is a meaningful numerical value, is measured.

Among the plurality of display units provided to correspond to each of the plurality of first magnetic field generators 11, the display unit that detects the current first lights up in the first color.

Thereafter, as the short turn detection process progresses, the display units that light up sequentially light up in the first color or the second color.

Here, the first color and the second color are preferably composed of colors with a large color difference so that they can be easily distinguished from each other with the naked eye.

In addition, the magnetic field generating device 1 is composed of: at least six or more even number of first magnetic field generating units 11; arranged radially, among the first magnetic field generating units 11, A pair of second magnetic field generators 12 located in opposite directions are lowered by the height adjustment device 3 to detect a short turn of the coil, and the first magnetic field generator 11 Among them, the third magnetic field generator 13, excluding the second magnetic field generator 12, is raised or maintained at a height by the height adjustment device 3 and is spaced or maintained in a spaced state from the coil. , the first magnetic field generator 11 is: a predetermined steel plate is bent into a 'ㄷ' shape, a first steel plate portion 1101 located at the center, and a second steel plate portion extending from one end of the first steel plate portion 1101. A horseshoe portion 110 composed of an iron plate portion 1102 and a third iron plate portion 1103 extending from the other end of the first iron plate portion 1101; A solenoid part 111 formed by being wound around the first iron plate part 1101 of the horseshoe part 110 in one direction; and an electrode unit 112 that supplies power to the solenoid unit 111, wherein the current measuring device 2 is connected to the top of the first magnetic field generator 11, and the electrode unit ( The operation stops when power is supplied to the solenoid from the electrode unit 112) and operates when power is not supplied to the solenoid from the electrode unit 112 to measure the current flowing in the solenoid, and the display unit: Current flowing in the coil When the 'first measurement value is greater than or equal to the first standard' is measured, it lights up in the first color, and the current flowing in the coil is 'more than the first standard, and a predetermined second value is measured relative to the first measurement value. When measured as a 'second measurement value that differs by more than a standard', the second color is lit, and the color lit in each display unit can be configured to be controlled to be any one of the first color and the second color. there is.

For example, when the first measured current (first measurement value) is recorded as 100 (unit omitted) and the first color is turned on, the subsequently measured current (second measurement value) is 105 and 96, respectively. , 130, 98, and 103, the first color lights up in the display section corresponding to 105, 96, 98, and 103, which is within a predetermined error range (second standard described later), and the second color lights up in the display section corresponding to 130. It can be controlled to light up.

For another example, when the first measured current (first measurement value) is recorded as 130 (unit omitted) and the first color is turned on, the subsequently measured current (second measurement value) is 105, respectively. In the case of 96, 100, 98, and 103, the second color may be lit in the display unit corresponding to 105, 96, 100, 98, and 103, which are outside the predetermined error range.

Here, it can be determined that a short turn has occurred at a point where there is a large difference from the measured value measured at another location as described above.

According to the prior art, it was only possible to check whether or not a short turn occurred, but according to an embodiment of the present invention, the point where the short turn occurred can be identified more accurately.

And, the first and second measured values include: interpolating data measuring the current flowing through the coil to generate a current function with respect to time; Definitely integrating the current function with respect to time by dividing it into two sections based on the x-intercept; Designating a positive value among the definite integral values calculated by dividing them into two intervals as the 1-1 measurement value or the 2-1 measurement value; Designating a negative value among the definite integral values calculated by dividing them into two intervals as the 1-2 measurement value or the 2-2 measurement value; And calculating a first measurement value by adding the absolute values of the 1-1 measurement value and the 1-2 measurement value, or calculating a second measurement value by adding the absolute values of the 2-1 measurement value and the 2-2 measurement value. It may be configured to be calculated according to the step of calculating the value.

Figure 6 shows the respective current functions for the first and second measurements.

Since the point where the x-axis value (time) is 10 seconds is the x-intercept, the current function for the first and second measured values can be separately divided into a section from 0 to 10 and a section from 10 to 15. .

If the above process is explained based on FIG. 6, the definite integral of the current function indicated in orange in the interval from 0 seconds to 10 seconds is the 1-1 measurement value, and the value indicated in gray in the interval from 0 seconds to 10 seconds is the 1-1 measurement value. The definite integral of the current function is the 2-1 measurement value, and the definite integral of the current function indicated in orange in the section from 10 seconds to 15 seconds is the 1-2 measurement value, and the section from 10 seconds to 15 seconds is the 1-2 measurement value. The definite integral value of the current function shown in gray can be designated as the 2-2 measurement value.

As shown in FIG. 6, only a slight difference occurs between the induced current measured at the point where the short turn occurred and the induced current measured at another point, so it may be difficult to distinguish based on fragmentary current values alone, but the data measured as above By integrating the current function generated by interpolating, the difference value at the point where the short turn occurs can be further amplified.

The specific configuration of the electrode unit 112, the height adjustment device 3, and the guide 31 may be the same as those described in the above-described embodiment, and redundant descriptions thereof will be omitted.

Although the embodiments have been described with limited drawings as described above, those skilled in the art can apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent.

Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the following claims.

CO1: Inspected coil
CO2: Coil under inspection
CO3: coil before inspection
B: Conveyor belt
1: Magnetic field generator
11: first magnetic field generator
110: horseshoe part
1101: First steel plate part
1102: Second steel plate part
1103: Third steel plate part
111: Solenoid part
112: electrode part
1121: Power transmitter
1122: Power receiver
12: second magnetic field generator
13: Third magnetic field generator
2: Current measuring device
20: top extension
3: Height adjuster
31: guide
310: Linear actuator
32: rail part
33: Followers
34: Cylindrical cam
340: Yohome
35: Camshaft
C1: 1st circle
C2: 2nd circle

Claims (3)

In a precision control-based short turn detection automation device that detects a short circuit in the coil,
A conveyor belt carrying multiple coils;
A magnetic field generating device disposed at a distance from the upper part of the conveyor belt;
current measuring device;
a height adjustment device that adjusts the height of the magnetic field generating device with respect to the conveyor belt;
Including a position sensor disposed on the upper part of the conveyor belt and detecting the position of the coil seated on the conveyor belt.
By sequentially operating the magnetic field generator for a plurality of coils transported along the conveyor belt and measuring the current flowing in the coils with the current measuring device,
Detect short turns sequentially for multiple coils,
The current measuring device is:
A display unit that lights up in one of a first color and a second color when the current flowing through the coil is greater than a predetermined first standard,
The magnetic field generating device:
At least six or more even number of first magnetic field generators are arranged radially,
Among the first magnetic field generators, a pair of second magnetic field generators located in opposite directions are lowered by the height adjustment device to detect a short turn of the coil,
Among the first magnetic field generators, the third magnetic field generator, excluding the second magnetic field generator, is raised or maintained in height by the height adjustment device to be spaced or maintained in a spaced state from the coil,
The first magnetic field generator:
A horseshoe is made by bending a predetermined steel plate into a 'ㄷ' shape and comprising a first iron plate portion located at the center, a second iron plate portion extending from one end of the first iron plate portion, and a third iron plate portion extending from the other end of the first iron plate portion. wealth;
A solenoid part formed by being wound around the second iron plate part of the horseshoe part in one direction; and
It includes an electrode unit that supplies power to the solenoid unit,
The current measuring device is:
Connected to the top of the first magnetic field generator,
Operation stops when power is supplied from the electrode unit to the solenoid,
It operates when power is not supplied from the electrode unit to the solenoid and measures the current flowing in the solenoid,
The display unit:
When the current flowing through the coil is measured as a 'first measurement value greater than the first standard', it lights up in the first color,
When the current flowing in the coil is measured as a 'second measurement value that is greater than the first standard and is different from the first measurement value by more than a predetermined second standard', it lights up in the second color,
The color lit in each display unit is controlled to be one of the first color and the second color,
Precision control-based short turn detection automation device with display unit delete In claim 1,
The first and second measurements are:
Interpolating data measuring the current flowing through the coil to generate a current function over time;
Definitely integrating the current function with respect to time by dividing it into two sections based on the x-intercept;
Designating a positive value among the definite integral values calculated by dividing them into two intervals as the 1-1 measurement value or the 2-1 measurement value;
Designating a negative value among the definite integral values calculated by dividing them into two intervals as the 1-2 measurement value or the 2-2 measurement value; and
A first measurement value is calculated by adding the absolute values of the 1-1 measurement value and the 1-2 measurement value, or a second measurement value is calculated by adding the absolute values of the 2-1 measurement value and the 2-2 measurement value. Calculating; Calculated according to,
Precision control-based short turn detection automation device with display unit