KR101690755B1 - Current sensor tester - Google Patents

Current sensor tester Download PDF

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Publication number
KR101690755B1
KR101690755B1 KR1020150134552A KR20150134552A KR101690755B1 KR 101690755 B1 KR101690755 B1 KR 101690755B1 KR 1020150134552 A KR1020150134552 A KR 1020150134552A KR 20150134552 A KR20150134552 A KR 20150134552A KR 101690755 B1 KR101690755 B1 KR 101690755B1
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KR
South Korea
Prior art keywords
current
current sensor
measured
sensor
sensors
Prior art date
Application number
KR1020150134552A
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Korean (ko)
Inventor
신정원
Original Assignee
(주)한국센서
신정원
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Publication date
Application filed by (주)한국센서, 신정원 filed Critical (주)한국센서
Priority to KR1020150134552A priority Critical patent/KR101690755B1/en
Application granted granted Critical
Publication of KR101690755B1 publication Critical patent/KR101690755B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing

Abstract

The present invention relates to a current sensor inspecting apparatus, which comprises a tester board which can be coupled and fixed with a plurality of current sensors, and which is capable of flowing a current to be measured to a core of the current sensor, A current source having a plurality of channels for individually applying a current and a current load to the current sensor and a current source for applying a current and a current load to the current sensor through the current source, And a tester for individually determining whether the plurality of current sensors are defective by using the measured value of the current sensor that measures the intensity of the measured current.

Description

{CURRENT SENSOR TESTER}

The present invention relates to a current sensor inspecting apparatus. In inspecting a plurality of current sensors, inspection conditions can be collectively set and inspection results can be acquired individually, and data and visualization of inspection results can be performed. And to a current sensor inspection apparatus capable of building an inspection system having both reliability and reliability.

The current sensor is a sensor for detecting alternating current and direct current, and is an electronic component mounted on various industrial equipments and electronic equipment to cut off the overcurrent and overvoltage when it is applied.

There are two types of current sensors: a current transformer method in which a primary current is detected by winding a primary coil and a secondary coil around a donut-shaped core to measure a secondary current, Hall sensors are generally used for measuring the intensity of a current through the strength of a magnetic field by measuring a Hall voltage by providing a Hall element in a magnetic field. magnetic core), which can be classified into four types.

As described above, since the current sensor is a kind of malfunction detection sensor used in a wide range of fields in various industrial and electronic devices as mentioned above, high performance is also important, but it is obvious that high reliability must be supported above all.

In recent years, there has been a demand for a current sensor inspecting apparatus which can increase the reliability of a current sensor and can build an inspection system with high productivity in accordance with the increase in demand of a current sensor having high reliability according to commercialization of hybrid and electric vehicles It is true.

On the other hand, in the case of a current sensor used in a hybrid electric vehicle, a Hall sensor type current sensor which does not have the above problems and which is relatively inexpensive compared to a current transformer method which has a problem of insulation problem and allowable electric power is mainly used .

The Hall sensor type current sensor has a structure in which a Hall element is placed in a ring-shaped core, and a magnetic field value generated when a measured current is passed through the core is measured using the Hall element, To check the reliability of the current sensor.

However, in the conventional inspection method as described above, since the visual inspection is performed after converting the current signal output from the current sensor into a waveform using a multimeter such as an oscilloscope in the inspection process, It is difficult to recognize mistakes or malfunctions, so that both the productivity and reliability of the test can not be said to be high.

In addition, since each current sensor is individually inspected, it is necessary to set the offset required for each inspection, and it is also necessary to adjust the output value within the standard range by using the variable resistor of the current sensor according to the inspection result There was.

In addition, since the current source for applying current and current loads to the current sensor is limited to a single type, it is not suitable for testing current sensors of various products.

As described above, since the conventional inspection method has various problems as described above, there is a demand for a current sensor inspection device that can solve such problems and construct an inspection system having both productivity and reliability.

It is an object of the present invention to provide a method and apparatus for inspecting a plurality of current sensors, which can collectively set inspection conditions and obtain inspection results individually, as well as enable data and visualization of inspection results, And to provide a current sensor inspecting apparatus capable of constructing an inspection system having all of the above functions.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not to be construed as limiting the invention as defined by the artistic scope and spirit of the invention as disclosed in the accompanying claims. It will be possible.

According to an aspect of the present invention, there is provided an apparatus for inspecting a current sensor, the apparatus comprising: a tester board capable of connecting and fixing a plurality of current sensors and flowing a current to be measured to a core of the current sensor; A current supplier having a plurality of channels for individually applying a current and a current load to respective current sensors fixed to the tester board; And using the measured value of the current sensor to measure the intensity of the measured current through a magnetic field generated in the core of the current sensor when a current and a current load are applied to the current sensor through the current supply, An inspecting device for individually judging whether or not defects of the current sensors are present; .

The control unit may further include a control pad for on / off-controlling the current and the current load applied to the current sensor through the respective channels of the current supply unit, and setting a measurement value and an offset range of the current sensor .

Meanwhile, the tester includes a processor for dataizing and visualizing the measured values and the defects of the plurality of current sensors; And a display for displaying the measured and visualized data and whether or not the measured value is bad on the screen; And the control pad may further include a storage function for storing the data and visualized measured values and whether or not the data is bad.

In addition, the processor may identify the current sensor and display it through the display when the measured value of the current sensor of at least one of the plurality of current sensors is out of a preset range.

Furthermore, the current supply may apply a current and a current load having units of at least one of 50 A (amperes), 100 A, and 300 A to the current sensor.

The tester board may include a plurality of installation parts formed with grooves into which the plurality of current sensors can be fitted and fixed and are spaced apart from each other along one surface of the tester board; And a cable portion through which the measured current flows to pass through the core of the current sensor fixed to the installation portion; And the tester may further include a magnetic field generated in the core of the current sensor when the measured current is applied to the core of the current sensor through the cable portion and a magnetic field generated in the core of the current sensor, The intensity of the measured current can be measured through the magnetic field value.

The tester board may be provided on one surface of the tester board adjacent to the installation unit to be connected to each channel of the current supply unit and to be coupled to the current sensor fixed to the installation unit, And a plurality of port units for connecting the plurality of ports.

The apparatus for inspecting a current sensor according to the present invention having the above-described configuration has the following effects. In inspection of a plurality of current sensors, inspection conditions can be collectively set and inspection results can be obtained individually, which is advantageous in that both productivity and reliability can be provided.

In addition, since the inspection results can be digitized and visualized, it is possible to easily check the inspection results and to manage the history of the current sensors after the inspection is completed.

On the other hand, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a view showing an apparatus for inspecting a current sensor according to an embodiment of the present invention.
2 is a schematic diagram illustrating a current supply and a tester board according to an embodiment of the present invention.
3 to 4 are views showing a tester board according to an embodiment of the present invention.
5 is a view illustrating a control pad according to an embodiment of the present invention.
6 is a view illustrating a display and a control pad of a tester according to an embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention in which the object of the present invention can be specifically realized will be described with reference to the accompanying drawings. In describing the present embodiment, the same names and the same reference numerals are used for the same components, and further description thereof will be omitted.

Further, in describing the embodiments of the present invention, the configuration shown in the drawings is only an example for the purpose of helping understanding the detailed description, and the configuration thereof may vary without limitation, and thus the scope of the right is not limited.

As shown in FIG. 1, the current sensor testing apparatus according to the present embodiment may include a tester board 100, a current supplier 200, and a tester 300.

The tester board 100 may be coupled to a plurality of current sensors (not shown) and may be provided to allow the measured current to flow through the core of the current sensor.

As described in the Background of the Invention, the current sensor is a sensor for detecting AC current and DC current, and is installed in various industrial equipments and electronic devices to block the overcurrent and overvoltage when they are applied. For electronic components.

The principles and inspection methods of such a current sensor are well known to those skilled in the art and the present invention relates to an apparatus for checking the performance and reliability of a current sensor other than the current sensor, The description of the current sensor is omitted for the sake of clarity of the present invention.

Returning to the discussion, the current supply 200 may comprise a plurality of channels that individually apply a current and a current load to each current sensor fixed to the tester board 100.

Such a current supply 200 may be provided to selectively apply a current and a current load having units of at least any one of 50 A (amperes), 100 A and 300 A to the current sensor as required, as shown in FIG. 2 .

Accordingly, the apparatus for inspecting the current sensor according to the present invention can perform inspection in response to various current sensors ranging from a small capacity to a large capacity by having various current sources.

Further, the current supply 200 according to the present embodiment can selectively apply a current and a current load of the above-mentioned unit, as well as a variety of current and current loads not mentioned, to the current sensor as needed .

The tester 300 measures the intensity of the measured current through the magnetic field generated in the core of the current sensor when the current and the current load are applied to the current sensor through the current supplier 200, It is possible to individually judge whether or not the plurality of current sensors are defective by using the measured values.

Here, the measured current refers to a current at which the intensity of current is measured through the current sensor. When the measured current is passed through a hollow-shaped ring-shaped core provided in the current sensor, The intensity of the measured current can be determined by measuring the magnetic field by the current sensor.

The tester 300 further includes a processor 310 for dataizing and visualizing measured values and failures of a plurality of current sensors, and a display 320 for displaying on the screen whether or not the measured and visualized measured values and defects are displayed on the screen .

At this time, when the measured value of the current sensor of at least one of the plurality of current sensors is out of a predetermined range, the processor 310 can identify the corresponding current sensor and display it through the display 320.

This makes it possible to intuitively determine the inspection result as well as to prevent the deterioration of the reliability of the inspection result due to a mistake or malfunction of the operator as compared with a method of visually inspecting the waveform of the measurement current using a multimeter such as an oscilloscope .

3 to 4, the tester board 100 according to the present embodiment may include an installation unit 110, a cable unit 120, and a port unit 130.

The installation unit 110 may be formed with grooves through which a plurality of current sensors 10 may be inserted and fixed and may be disposed at intervals along one side of the tester board 100.

The installation unit 110 may be provided to seat and fix the current sensor 10 on the tester board 100 by pushing the current sensor 10 toward the groove on the top or side.

At this time, although not shown, a separate fixing member or a clip having elasticity may be provided on the tester board 100, or a guide groove or a guide rail formed along the groove may be provided so that the current sensor 10 can be stably And can be fixed to the installation unit 110.

As described above, the installation unit 110 is provided with a plurality of spaced apart current sensors 10 so that the plurality of current sensors 10 can be fixed on the tester board 100 at the same time, Lt; / RTI >

In the meantime, in describing the above-described installation unit 110 with reference to the drawings, the shape and the number of the installation unit 110 shown in the figure are merely examples for helping understanding of the detailed description, and it is not limited thereto .

The cable 120 may be provided so that the measured current flows through the core 11 of the current sensor 10 fixed to the installation unit 110 described above.

When the current sensor 10 is fixed on the tester board 100, the cable unit 120 can measure the current to be measured, which is applied through the cable unit 120, to the cores 11 of the plurality of current sensors 10 The first connector 120a, the second connector 120b, the cable 121, the cable plug 123, and the like.

The first connector 120a is provided on one side of the tester board 100 corresponding to the position where the core 11 of the current sensor 10 fixed to the tester board 100 is aligned and the second connector 120b, May be provided on the other side of the tester board 100 opposite to the one side.

A cable 121 through which a current to be measured is directly applied through the cable 120 may be connected between the first connector 120a and the second connector 120b.

At this time, one end of the cable 121 is fixed to either the first connector 120a or the second connector 120b, and the cable plug 123 may be provided at the other end.

The other end of the cable 121 provided with the cable plug 123 collectively passes through the cores 11 of the plurality of current sensors 10 fixed to the tester board 100, 2 connector 120b of the second connector 120a.

The measured current is supplied to the cable 121 passing through the cores 11 of the plurality of current sensors 10 through the first connector 120a and the second connector 120b as described above, A magnetic field can be collectively generated in each of the cores 11 of the plurality of current sensors 10 by applying a current and a current load to the current sensor 10 through the plurality of current sensors 10-1 to 200-2.

When the measured current is applied to the core 11 of the current sensor 10, the current sensor 10 is provided to be able to apply the measured current to the core 11 of the current sensor 10 through the cable 120, The tester 300 described above can measure the intensity of the measured current through the magnetic field generated in the core 11 of the current sensor 10 and the magnetic field value converted into the voltage signal by the current sensor 10 .

The measured current applied to the core 11 of the current sensor 10 through the cable 120 can be supplied from the outside through the main cable 150 provided on the tester board 100. [

The port portion 130 is connected to each channel of the above-described current supply (200 of FIGS. 1 and 2) and is connected to a current sensor 10 fixed to the installation portion 110, And may be provided on one side of the board 100 to connect the current sensor 10 to the channel.

The port unit 130 may be provided along one side of the tester board 100 at a plurality of intervals corresponding to the plurality of installation units 110.

In order to prevent the current sensor 10 from interfering with the port unit 130 when the current sensor 10 is inserted and fixed in the installation unit 110, the port unit 130 may be installed before the inspection unit 110 So that interference can be avoided.

On the other hand, at the time of inspecting, a plurality of the current sensors 10 fixed to the installation unit 110 are connected to the respective angles of the current supply unit 130 by integrally extending the plurality of port units 130 by using a separately provided operation button or a control pad Channel.

In addition, the port portion 130 according to the present embodiment may be provided in a cable type as well as a slide type in which shrinking and stretching can be performed as described above.

In addition, the tester board 100 is provided with a display lamp 140 for displaying the connection status of each channel of the current supply device and the current sensor 10 connected to the channel, Each connection state can be grasped intuitively.

As described above, according to the current sensor testing apparatus of the present embodiment, a plurality of current sensors 10 are collectively fixed to the tester board 100 through the current supplier 200, The current and current loads can be applied and the measured values can be grasped individually and intuitively so that the inspection speed can be much higher than the conventional method in which each current sensor 10 is individually set and inspected.

Meanwhile, the current sensor testing apparatus according to the present embodiment may further include a control pad 400 as shown in FIG.

Here, the control pad 400 separately controls the current and the current load applied to the current sensor through each channel of the above-described current supply (200 of Figs. 1 and 2), and the current The measured value and offset range of the sensor can be set.

5, the control pad 400 may include a test button 410, a channel on-off button 420, a gain button 430, an offset button 440, and a save button 450 have.

When the current sensor to be inspected is set on the tester board, the test button 410 determines the intensity of the measured current through the magnetic field generated in the core of the current sensor and the magnetic field value converted into the voltage signal by the current sensor It is possible to control the operation of the tester (300 in Fig. 1) to measure.

That is, the inspection of the current sensor set on the tester board 100 can be started or stopped through the test button 410.

The channel on-off button 420 controls on-off the current and the current load applied to the current sensor through each port of the tester board connected to each channel of the current supplier 200 .

Accordingly, even when a plurality of current sensors are fixed to the installation portion of the tester board, it is possible to select only a specific current sensor and perform inspection.

For example, as shown in the figure, when eight channels of the tester board installation portion (110 of FIG. 3) and the current supply device (200 of FIG. 1) are provided and eight current sensors are fixed to each installation portion, If only one of the plurality of channel ON / OFF buttons 420 is operated, only one or two buttons may be operated to selectively apply a current and a current load to the current sensor.

On the other hand, it is noted that the tester board installation portion, the port portion, and the channel on-off button 420 are not limited to eight as shown in the drawings and the description above, and are merely examples for facilitating understanding of the detailed description.

The gain button 430 is used to flow the measured current through the above-described cable portion (120 in Figs. 2 to 3) or to supply the current through the port portion (130 in Fig. 2 to Fig. 3) Current and current loads can be applied to the sensor.

That is, it is possible to control the flow of the current to be measured and current to be applied to the current sensor and the current load applied to the core of the current sensor.

The offset button 440 is provided to set an offset when inspecting the current sensor, and it is possible to set an error tolerance range within the standard range of the current sensor.

The save button 450 may store the measured and visualized data and the badness and display it on the display (320 in FIG. 1) by the processor (310 of FIG. 1) described above.

6, when the measured value of the current sensor is derived through the above-described processes, the save button 450 is operated to check whether the current sensor is defective according to the measured value and the measured value, And it can be recorded on the display 320 so that the operator can intuitively confirm the data.

That is, as shown in the drawing, when the measured value is out of the predetermined range within the same offset, the corresponding current sensor is identified and displayed on the display 320, so that the operator intuitively and easily determines whether or not the current sensor is defective .

On the other hand, in the case of the current sensor judged to be defective, by adjusting the offset by adjusting the zero point using the variable resistance adjusting screw (12 in FIG. 4) provided in the current sensor, the measured value of the current sensor is adjusted to have a value within a preset range Can be adjusted.

As described above, the current sensor testing apparatus according to the present embodiment includes the control pad 400 having various functions necessary for the inspection, so that the operator can easily set inspection conditions according to the standard of the current sensor, Can be intuitively judged.

Further, after completion of the inspection through the inspection result of the data current sensor, it is possible to manage the history of each current sensor.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It is obvious to those who have ordinary knowledge.

Therefore, such modifications or variations should not be individually understood from the technical spirit and viewpoint of the present invention, and modified embodiments are also included in the claims of the present invention.

In addition, embodiments of the present invention can be implemented independently of each other, and can be implemented in various combinations. Through the embodiments of the present invention in which the object of the present invention can be specifically realized, It is possible to provide a current sensor inspection apparatus capable of solving the problems of the method.

100: Tester Board
110:
120: Cable section
130: Port portion
200: current supply
300: Inspector
310: Processor
320: Display
400: Control pad

Claims (7)

A tester board capable of being coupled and fixed with a plurality of current sensors and capable of flowing a current to be measured to a core of the current sensor;
A current supplier having a plurality of channels for individually applying a current and a current load to respective current sensors fixed to the tester board; And
Using the measured value of the current sensor for measuring the intensity of the measured current through a magnetic field generated in the core of the current sensor when a current and a current load are applied to the current sensor through the current supply, A tester for individually judging whether or not the current sensor is defective; Lt; / RTI >
The tester board
A plurality of installation parts formed with grooves into which the plurality of current sensors can be fitted and fixed and are spaced apart from each other along one surface of the tester board;
A cable portion through which the measured current flows and which can pass through the core of the current sensor fixed to the installation portion; And
And a plurality of port units provided on one surface of the tester board adjacent to the installation unit so as to be coupled to the current sensors fixed to the installation unit, ; ≪ / RTI >
Current sensor inspection device.
The method according to claim 1,
Further comprising a control pad capable of individually controlling on and off current and current loads applied to the current sensor through each channel of the current supply and setting a measurement value and an offset range of the current sensor,
Current sensor inspection device.
3. The method of claim 2,
The inspecting device comprises:
A processor for digitizing and visualizing the measured values of the plurality of current sensors and the badness; And
A display for displaying on the screen the data and visualized measured values and whether or not the measured values are bad; Further comprising:
The control pad includes:
Further comprising a storage function for storing the data and visualized measured values and whether or not the measured values are bad.
Current sensor inspection device.
The method of claim 3,
The processor comprising:
Wherein when the measured value of at least one of the plurality of current sensors is out of a predetermined range, the current sensor is identified and displayed on the display.
Current sensor inspection device.
The method according to claim 1,
Wherein the current supply includes:
Characterized in that a current and a current load having units of at least any one of 50 A (amperes), 100 A and 300 A is applied to the current sensor,
Current sensor inspection device.
The method according to claim 1,
The inspecting device comprises:
Wherein the current to be measured is applied to the core of the current sensor through the cable portion, the intensity of the current to be measured is measured through a magnetic field generated in the core of the current sensor and a magnetic field value converted into a voltage signal by the current sensor ≪ / RTI >
Current sensor inspection device. delete
KR1020150134552A 2015-09-23 2015-09-23 Current sensor tester KR101690755B1 (en)

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KR1020150134552A KR101690755B1 (en) 2015-09-23 2015-09-23 Current sensor tester

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0418379A (en) * 1990-05-11 1992-01-22 Hitachi Ltd Printing apparatus
JP2000206221A (en) * 1998-11-10 2000-07-28 Toyota Motor Corp Abnormality detecting device of current sensor
KR20120093444A (en) * 2009-12-18 2012-08-22 에스비 리모티브 저머니 게엠베하 Current sensor with a self-test function
JP2013068452A (en) * 2011-09-21 2013-04-18 Gs Yuasa Corp Current sensor failure diagnosis equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0418379A (en) * 1990-05-11 1992-01-22 Hitachi Ltd Printing apparatus
JP2000206221A (en) * 1998-11-10 2000-07-28 Toyota Motor Corp Abnormality detecting device of current sensor
KR20120093444A (en) * 2009-12-18 2012-08-22 에스비 리모티브 저머니 게엠베하 Current sensor with a self-test function
JP2013068452A (en) * 2011-09-21 2013-04-18 Gs Yuasa Corp Current sensor failure diagnosis equipment

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