KR101410740B1 - Portable ultrasonic partial discharge measurement device and method having manless and automatic scan function - Google Patents

Abstract

The present invention relates to a portable ultrasound partial discharge measuring apparatus and method having an unmanned surveillance and automatic scanning function, and more particularly, to a portable ultrasound partial discharge measuring apparatus and method using a driving unit, And more particularly, to a portable ultrasound partial discharge measuring apparatus and method having an unmanned surveillance and automatic scanning function.
That is, according to the present invention, an ultrasound sensor and a reflector for measuring a partial discharge of an object to be measured are moved vertically and horizontally using a motor such as a motor to scan a predetermined area of the object to be measured, It is possible to automatically measure the partial discharge measurement on the power equipment and the place where it is difficult for the operator to directly measure even in the unmanned state by automatically performing the detection of the direction of the position where the partial discharge signal is generated And to provide a portable ultrasound partial discharge measuring apparatus and method having an unmanned surveillance and an automatic scanning function capable of aiming at a position where a maximum signal is generated and data, image acquisition and storage.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a portable ultrasound partial discharge measurement apparatus and method having an unmanned surveillance and automatic scanning function,

The present invention relates to a portable ultrasound partial discharge measuring apparatus and method having an unmanned surveillance and automatic scanning function, and more particularly, to a portable ultrasound partial discharge measuring apparatus and method using a driving unit, And more particularly, to a portable ultrasound partial discharge measuring apparatus and method having an unmanned surveillance and automatic scanning function.

Generally, the term partial discharge is a generic term for a discharge occurring in any part of an electric power equipment such as a power receiving facility installed in various industries and a power system substation and a high voltage switchboard. The partial discharge refers to a corona discharge near the tip of the electrode, A void discharge occurring in voids in the insulating material, and the like.

In this way, when a partial discharge occurs in various power devices including an electric power reception equipment and a high-voltage switchboard, since the size of the partial discharge power source is substantially small, it is difficult to accurately detect the position where the partial discharge occurs, have.

Therefore, the technique of estimating the partial discharge position of the power device is a very important technique for preventing the failure of the power device.

The conventional technique for estimating the partial discharge position of the electric power equipment includes a method of using the attenuation of the electromagnetic wave discharge signal generated by the discharge and a method of using the time difference in which the electromagnetic wave discharge signal reaches the partial discharge sensor.

However, in the conventional partial discharge measuring method, only the type of defect of the power device can be estimated by grasping the magnitude of the partial discharge amount and the phase of the applied voltage, and it is possible to precisely know the location and risk of the more important partial discharge There is no disadvantage.

In order to solve this problem, Korean Patent Registration No. 10-482305 discloses a method of continuously measuring ultrasound signals during operation of a transformer, (Hereinafter referred to as " ultrasound continuous monitoring device for partial discharge measurement in a transformer ") which is capable of effectively monitoring the progress of a partial discharge by transmitting the result to a preventive diagnosis system, and disclosed in Korean Utility Model Registration No. 20-225223, Discloses a transformer partial discharge diagnosis apparatus using an ultrasonic sensor, which is capable of diagnosing a partial discharge of a transformer by installing an ultrasonic sensor in a transformer.

However, in the conventional method using ultrasonic waves as described above, when the distance between the power device and the ultrasonic sensor to be measured deviates, the magnitude of the partial discharge to be measured continuously changes. Therefore, inconvenience that the ultrasonic sensor must be always installed at the same position If the distance between the power device and the ultrasonic sensor to be measured is small, the size of the ultrasonic wave sensed by the ultrasonic sensor changes, and the position and size of the partial discharge can not be accurately known.

Particularly, when the ultrasonic sensor is fixedly installed around the power device to be measured, the distance between the power device and the ultrasonic sensor is kept the same at all times to obtain the same measured value. However, There is still a disadvantage that only the estimation is possible but the precise position is unknown.

In order to solve the above problems, the applicant of the present application has been able to easily measure the partial discharge while moving for each power device, and to compare the stored image with the current image for each measurement of various power devices, A portable ultrasound partial discharge measuring apparatus having a video photographing means and a partial discharge measuring method using the same ", which has been already filed and registered (No. 10-1070329), so that the position can always be grasped accurately at the same position.

In the case of the technology registered by the applicant of the present application, the point where the discharge at the far distance is strongest is manually aimed and measured, and the previous image data and the current image data are overlapped with each other even when re- . However, this method has the following disadvantages.

That is, in the case of a partial discharge measuring apparatus using a reflector used for measurement of distant discharge, the directivity of HPBW (Half-power beam width) is less than 5 ° and the direction is very strong. Since the signal intensity is greatly different, it is very difficult to quantitatively compare with the re-measurement at the same position after the elapse of the measurement period.

In addition, although some foreign portable ultrasound partial discharge measuring devices are equipped with a laser pointer to assist in the adjustment of the measurement position, they are merely used to display the current measurement position on the object, and moreover, There is a disadvantage in that it is not practicable to identify the pointer in the outdoors.

As described above, in the case of the far-field discharge measurement using the conventional portable ultrasound partial discharge measuring apparatus, it is possible to detect a portion exposed to the outside such as a defect outside the power device or a wire to be measured or an ultrasonic wave leaking from the inside of the device, And there is a disadvantage in that the error of the measurement value becomes large due to hand-shaking or the like when the measuring person directly measures the measuring device by hand.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide an ultrasonic sensor and a reflector for measuring a partial discharge of a measurement object by using a motor such as a motor, , It is easy to control automatically or remotely by installing it in a part difficult to measure directly by the operator or inside the electric power equipment. Also, by using the scan function even in the direct measurement, the real time change of the measurement object image and the measured discharge signal size It is possible to combine the real-time change information of the partial discharge signal and to automatically detect the direction of the position where the larger partial discharge signal is generated and to aim at the position where the maximum signal is generated, It is possible to increase the measurement efficiency, convenience, and accuracy of the measuring apparatus, To provide a post that can further improve the reliability of data upon re-measurement unattended monitoring, portable ultrasonic partial discharge measuring device and method having an automatic scan function it is an object.

According to an aspect of the present invention, there is provided an integrated signal processing apparatus comprising: a body portion, A driving battery mounted on a lower portion of the body portion; An ultrasonic wave reflecting shade mounted on a front end portion of the body portion; An ultrasonic sensor mounted at a central position of an opening of the ultrasonic wave reflector so as to sense an ultrasonic sound according to a partial discharge from a partial discharge measuring object; A camera mounted on a center position of an upper end of the ultrasound reflection shadows to capture a partial discharge measurement object; A display device for displaying an image photographed by the camera while the waveform of the ultrasonic wave measured by the ultrasonic sensor is displayed; An ultrasonic amplifier connected to the ultrasonic sensor for amplifying a signal from the ultrasonic sensor, an audible signal converter for converting the amplified signal from the ultrasonic amplifier into audible frequency for human being, An AD conversion and an FFT (Fast Fourier Transform) device for converting the converted digital signal into a sensor measurement frequency magnitude through a real-time FFT (Fast Fourier Transform) algorithm, And a signal processing device for converting an image photographed by the signal processing device into a video data signal; And a computer connected via the communication device to the integrated signal processing device,

A driving means for driving the ultrasonic wave reflector mounted on the bottom of the ultrasonic wave reflector so that the ultrasonic wave sensor can scan a predetermined region of the object to be measured; The ultrasound wave reflected from the ultrasonic sensor is transmitted to the signal processing device of the integrated signal processing device, and the ultrasonic wave is transmitted to the signal processing device of the integrated signal processing device, A scan control unit for drivingly controlling the ultrasonic wave reflector so as to stop at a position where a maximum signal of the ultrasonic wave waveform (signal of the part of the discharge intensity is transmitted) is generated; The present invention also provides a portable ultrasound partial discharge measuring apparatus having an unmanned surveillance and automatic scanning function.

In one embodiment of the present invention, the transmission means and the scan control unit are modularized in one body to support the bottom of the ultrasound reflector, and a tripod is mounted on the bottom of the body for modularization, .

According to another aspect of the present invention, there is provided an ultrasonic diagnostic apparatus, comprising: a body unit; a body integrally formed with the body and the ultrasonic wave reflector; and a scan control unit ; Scanning the ultrasound echo when the ultrasound echo is generated by the ultrasound sensor while the ultrasound echo is moved along the predetermined range of the object to be measured in accordance with the drive of the electric drive means; Receiving the ultrasound signals scanned and detected by the scan control unit, and transmitting the ultrasound signals to a signal processor of the integrated signal processor; Analyzing the ultrasound signal scanned and detected by the signal processor in real time to determine a position at which a maximum signal of the ultrasonic waveform (a signal of a part of the discharge intensity is generated) is generated; A step of receiving a position adjustment command to the scan control unit from the signal processing unit to move the ultrasound sensor to a position where a maximum signal of the ultrasonic waveform is generated (a signal having a partial discharge intensity of the sensor); In the scan control unit which received the position adjustment instruction of the signal processing device, the position adjustment driving signal is commanded to the driving means and the position of the ultrasonic wave reflector is changed to the position where the maximum signal of the ultrasonic waveform Moving and stopping; The ultrasonic sensor of the ultrasonic reflector automatically detects the ultrasonic signal with respect to the portion where the maximum signal of the object to be measured is generated in the unmanned state as well as the manned ultrasonic wave. Thereby providing a discharge measurement method.

In another embodiment of the present invention, when analyzing ultrasonic signals sensed through a scan in the signal processing apparatus in real time, the ultrasound intensity measured in real time during the scan is continuously compared with the immediately preceding ultrasonic intensity, So that the position at which the maximum signal of the waveform is generated can be determined.

According to another embodiment of the present invention, there is provided a method of detecting an ultrasonic wave, comprising the steps of: sensing an ultrasonic signal at a portion where a maximum signal of an object to be measured is generated in an ultrasonic sensor of an ultrasonic wave reflector stopped after movement; The ultrasound signal measured by the ultrasonic sensor and the image data photographed by the camera 18 are transmitted to and stored in the integrated signal processing device; Comparing the stored ultrasound signal with a maximum allowable size, and transmitting an abnormal signal sound to the headphone or transmitting an abnormal signal to the computer when the stored ultrasound signal is greater than the maximum allowable size; And further comprising:

Preferably, when the stored ultrasonic signal is smaller than the maximum allowable size, the signal processing apparatus of the integrated signal processing apparatus further includes a step of bringing a scan command for another area of the measurement object to the scan control unit do.

Through the above-mentioned means for solving the problems, the present invention provides the following effects.

According to the present invention, an ultrasound sensor and a reflector for measuring a partial discharge of a measurement object are moved up and down and left and right by using a transmission means such as a motor so that a certain area of the measurement object can be scanned, It is possible to easily perform automatic or remote control for partial discharge measurement by mounting in an unattended state in a place which is difficult for the operator to directly measure and inside the electric power equipment.

Of course, the operator can combine the real-time change of the measurement object image with the real-time change information of the measured discharge signal size by utilizing the scan function even when the operator directly measures, and automatically detect the direction of the position where the larger partial discharge signal is generated To aim at the position where the maximum signal is generated, data, image acquisition and storage are possible.

In this way, the portable ultrasound partial discharge measuring device can be installed at a desired place, so that the partial discharge of the measurement object can be conveniently and accurately measured even in the unmanned state, and the data reliability at the time of re-measurement after the elapsed time can be improved.

FIG. 1 is a block diagram of a portable ultrasound partial discharge measuring apparatus having an unmanned monitoring and automatic scanning function according to the present invention.
FIG. 2 and FIG. 3 are control block diagrams of a portable ultrasound partial discharge measuring apparatus having an unattended monitoring and automatic scanning function according to the present invention,
FIG. 4 is a flowchart illustrating a portable ultrasound partial discharge measurement method having an unattended monitoring and automatic scanning function according to the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

For better understanding of the present invention, the external appearance and configuration of the ultrasound partial discharge measuring apparatus will be described with reference to FIG. 1 attached hereto.

First, a body part 10 having a handle hole 12 that a user can hold by hand in consideration of portability and mobility is provided, and the integrated signal processing device 20 is built in the body part 10, A drive battery 19 is embedded in the lower portion of the body 10.

The handle hole 12 is a hole penetrating the body portion 10 in the left and right direction so that the user can grasp the body portion 10 with one hand so that the user can easily carry the apparatus of the present invention by hand, Precision measurement of the measurement object can be performed conveniently.

The ultrasonic wave reflecting reflector 14 is integrally assembled to the front end of the body portion 10 so that the parabolic reflector 14 is pivotally rotated about the inner curved surface so as to reflect the ultrasonic wave to the ultrasonic wave sensor 16, At the open front central position, an ultrasonic sensor 16 for detecting ultrasonic sound detected when a partial discharge is generated in the partial discharge measuring object 30 (transmission line, electric power equipment, switchboard, etc.) is mounted.

A camera 18 is mounted as an image capturing element capable of capturing the partial discharge measurement object 30 at the center of the upper end of the ultrasound reflector 14 so that the camera 18 Of course, an on / off switch and a shutter for photographing the camera 18 may be mounted at a position near the handle hole 12 of the body 10.

In addition, the size (waveform) of the ultrasonic wave measured by the ultrasonic sensor 16 can be seen on the upper surface of the body part 10 or the rear surface of the upper surface of the ultrasonic wave reflecting shade 14, And a display device 27 capable of viewing the photographed image is mounted.

According to the present invention, the ultrasonic sensor 16 and the ultrasonic wave reflector 14 for measuring the partial discharge to the measurement object are moved by using the transmission means including the normal motor and the reduction gear means, and at the same time, There is a point in that the automatic scanning for detecting the partial discharge signal intensity can be performed for a certain area.

To this end, the ultrasonic sensor 16 is provided at the bottom position of the ultrasonic wave reflector 14 with driving means 40 for driving the ultrasonic wave reflector 14 up, down, left, and right so that the ultrasonic wave sensor 16 can scan a certain area of the partial- ) Is installed.

For example, the transmission means 40 includes a spur gear (not shown) in the vertical direction and a horizontal direction, which are mounted at predetermined positions on the bottom of the ultrasonic wave reflecting shade 14, A body having a constant volume, and first and second motors (not shown) installed in the body while having a rack engaged with each spur gear as an output shaft.

Therefore, when the first motor is driven, the rack rotates the spur gear in the vertical direction, and the ultrasonic wave reflecting shafts can be rotated up and down. When the second motor is driven, the rack rotates the flat guide in the horizontal direction, Each can be rotated.

Of course, in addition to the known motor and transmission means by gear combination, any transmission means capable of rotating the ultrasonic wave reflection shafts to the left and right can be easily adopted through design modification.

A scan control unit 42 for controlling driving of the motor of the driving unit 40 for adjusting the angle and direction of the up and down and left and right movements of the ultrasonic wave reflecting shade 14 is provided in the body of the transmission unit 40 It is spoken.

The scan control unit 42 transmits ultrasonic signals sensed by the ultrasonic sensor 16 to a signal processor 24 of the integrated signal processor 20 by scanning a predetermined region of the object to be measured, 24, the position of the maximum signal of the ultrasonic signal after the analysis of the ultrasonic signal (the signal of the part of the discharge intensity is generated) is determined. Then, according to the command signal of the signal processing device 24, And controls the driving means 40 to stop the reflection gauge 14 at a position where the maximum signal of the ultrasonic signal (the signal with the partial discharge intensity on the rising side) is generated.

Hereinafter, a configuration of a general signal processing apparatus as a kind of host controller will be described with reference to FIG.

The integrated signal processing apparatus 20 includes an ultrasonic amplifier 21 connected to the ultrasonic sensor 16 to amplify a signal from the ultrasonic sensor 16, An audible signal conversion device 22 for converting the audible frequency into a waveform representing the size of the ultrasonic wave and a signal processing device 24 for converting the image photographed by the camera 18 into a video data signal do.

At this time, the signal processing device 24 receives a waveform signal indicating the size of the ultrasonic wave and stores the waveform signal in the data storage device, and controls the display device 27 to display waveforms and numerical values, And displays the resultant image data on the display device 27. Alternatively, the display device 27 may display the previous image data stored in the data storage device and compare the current image data with the current image data, Control.

Particularly, the signal processing device 24 according to the present invention scans a certain area of the measurement object from the scan control unit 42 according to the "real-time maximum signal scan and abnormal signal notification algorithm" The analysis is performed by receiving and analyzing the ultrasonic signal in real time, and determining the position where the maximum signal of the ultrasonic waveform (the signal of the side of the partial discharge intensity) is generated.

The signal processing unit 24 determines the position at which the ultrasonic signal is maximally generated in the scan region and then outputs the ultrasonic wave reflection grate 14 having the ultrasonic sensor 16 to the maximum signal of the ultrasonic waveform And controls the scan control unit 42 to issue a position adjustment command to the ultrasonic wave reflecting shadows 14 in order to move the ultrasonic wave to the position where the ultrasonic wave is reflected.

Meanwhile, the analog signal amplified through the ultrasonic amplifier 21 is converted into a digital signal, and the converted digital signal is converted to a size at a sensor measurement frequency (for example, 40 kHz) through a real-time FFT algorithm AD conversion and FFT unit 23 are connected between the ultrasonic amplifier 21 and the signal processing unit 24. [

An output terminal of the signal processing device 24 of the integrated signal processing device 20 is connected to a communication device 25 for transmitting the ultrasonic measurement signal and the image data signal stored in the data storage device to the computer 28, , Wi-Fi, Bluetooth, etc.).

Hereinafter, the portable ultrasound partial discharge measuring method having the unmanned surveillance and automatic scanning function according to the present invention will be described.

According to the present invention, the partial discharge detection device of the present invention is unattended to a position distant from a power device to be measured, such as a power reception equipment used in an industrial and power system substation, a high voltage switchboard, or the like, .

For example, when the portable ultrasound partial discharge measuring apparatus of the present invention is disposed inside an electric distribution board, it is disposed by using a normal mounting means (such as a bracket or a supporting structure) without a tripod, So that the tripod 44 is supported on the ground.

When the portable ultrasound partial discharge measuring apparatus of the present invention is disposed at a desired place such as a position adjacent to the measurement object, the camera 18 and the ultrasound reflector 14 integrated with the body 10, including the body 10, Is directed to the measurement object (30).

When the drive control unit 42 drives the drive unit 40 to drive the scan unit 40 in the unmanned monitoring state, the ultrasonic wave reflector 14 is driven by the drive unit 40, At the same time, the ultrasonic sensor 16 mounted on the ultrasonic reflector 14 also moves along a certain area of the measurement object and moves, and a partial discharge is generated in the ultrasonic sensor 16 The ultrasonic sound is detected.

At this time, the ultrasonic signal scanned and sensed by the ultrasonic sensor 16 is received by the scan control unit 42, and is transmitted to the signal processing unit 24 of the integrated signal processing device 20.

Next, the ultrasound signal scanned and sensed by the signal processing device 40 is analyzed in real time, and a position at which the maximum signal of the ultrasound waveform (the signal of the partial discharge intensity is transmitted) is detected in the scan area of the measurement object A determination step is performed.

More specifically, when analyzing the ultrasound signal detected through the scan in the signal processing unit 24 in real time, the current ultrasonic intensity measured immediately before the scan and the immediately preceding ultrasonic intensity are continuously compared with each other, The position where the maximum signal of the ultrasonic waveform is generated in the scan region can be grasped.

Next, the ultrasound sensor 16 is moved to a position where the maximum signal of the ultrasound waveform (the signal of the partial discharge intensity is transmitted) is scanned in the scan area of the measurement object, The control unit 24 instructs the scan control unit 42 to adjust the position of the ultrasonic reflector 14.

The scan control unit 42 which receives the position adjustment command of the signal processing device 24 commands the transmission means 40 to transmit the position adjustment drive signal and the ultrasonic wave reflection head 14 transmits the maximum signal of the ultrasonic waveform (The signal with the partial discharge intensity is higher) is generated and stopped.

Accordingly, the ultrasonic sensor 16 of the ultrasonic reflector 14 automatically scans a certain region of the object to be measured, and then stops at a portion where the maximum partial discharge maximum signal of the object to be measured is generated, The ultrasonic signal at the position where the maximum signal is generated is automatically detected.

In this way, when the ultrasonic sensor 16 of the ultrasonic wave reflector 14 is moved and then the ultrasound signal is sensed with respect to the portion where the maximum signal of the object to be measured is generated in the stopped state, The ultrasonic signal measured by the ultrasonic sensor 16 and the image data photographed by the camera 18 are transmitted to the integrated signal processing device 20 and stored.

At this time, the ultrasonic signal and the image data are transmitted to and stored in the signal processing unit 24 of the integrated signal processing device 20, and the ultrasonic signal is also inputted to the ultrasonic amplifier 21.

When the ultrasound signal stored in the signal processing device 24 of the integrated signal processing device 20 is compared with the maximum allowable size and is larger and the error signal is transmitted to the headphone 26, It is possible to recognize that a partial discharge is generated in the measurement object by an operator at a remote location.

On the other hand, when the stored ultrasound signal is smaller than the maximum allowable size, the signal processing unit 24 of the integrated signal processing device 20 reduces the scan command for the other area of the measurement object to the scan control unit 42 , The automatic scanning process of the other area for the partial discharge measurement is repeatedly performed.

The ultrasonic signal input from the ultrasonic sensor 16, that is, the ultrasonic signal measured at the portion where the maximum signal of the measurement object is generated, is amplified through the ultrasonic amplifier 21, Is converted to an audible frequency around 1 kHz that the measurer can hear through the headphone 22 so that the measurer can hear the audible frequency in real time via the wearing headphone 26.

That is, since the signal amplified by the ultrasonic amplifier 21 is converted into a human-audible region in the audible signal converter 22, the distance measurer at this time is able to recognize the portion And a skilled measurer can roughly predict the type of discharge in the field without the aid of a computer through a pattern of sounds.

The analog signal amplified through the ultrasonic amplifier 21 is converted into a digital signal through the A / D conversion and FFT unit 23 and converted into a digital signal by a sensor measurement frequency (for example, 40 kHz) As shown in FIG.

The reason for performing the real-time FFT conversion without converting the analog-to-digital signal into the signal size on the time axis is that it can effectively measure a minute-sized ultrasonic signal embedded in the background noise during the time axis measurement, Therefore, it is possible to improve the minimum sensitivity of the ultrasonic sensor. Accordingly, various partial discharge diagnoses are performed based on the result of the FFT conversion.

Therefore, a signal converted into a digital signal through the A / D conversion and FFT device 23 and converted into a signal at a sensor measurement frequency (for example, 40 kHz) through a real-time FFT algorithm is output to the signal processing device 24 And the real-time image data of the measurement object 30 photographed by the camera 18 is also transmitted to the signal processor 24.

The image data transmitted to the signal processing device 24 is displayed on the display device 27 and used to identify the position of a defect where a maximum signal (a signal with a partial discharge intensity of a positive side) is generated.

On the other hand, various measurement results controlled and processed by the signal processing device 24 can be transmitted to the computer 28 via the communication device 25, if necessary, and used for additional fine-tuning diagnosis. In case of unattended monitoring, Can be transmitted and monitored.

According to the present invention as described above, the ultrasound sensor and the reflector for measuring the partial discharge of the measurement object are moved up and down and left and right using a motor such as a motor to scan a certain area of the measurement object, It is possible to provide an advantage of easy automatic or remote control for partial discharge measurement by mounting the control unit in a non-infinite state in a place which is hard to directly measure by an operator and in an electric power device by constituting the control unit so as to perform drive control for the electric means. It is possible to automatically detect the direction of the position where the discharge signal is generated, thereby providing the advantage of being able to aim at the position where the maximum signal is generated, and to acquire data, image acquisition and storage.

10: body part 12: handle hole
14: Ultrasonic reflector 16: Ultrasonic sensor
18: camera 19: battery
20: Integrated signal processing device 21: Ultrasonic amplifier
22: Audible signal conversion device 23: AD conversion and FFT
24: signal processing device 25: communication device
26: headphone 27: display device
28: computer 30: partial discharge measurement object
40: transmission means 42: scan control unit
44: Tripod

Claims (6)

A body portion 10 which can be gripped by a user and has a built-in integrated signal processing device 20; A driving battery 19 mounted on a lower portion of the body 10; An ultrasonic wave reflector 14 mounted on a front end of the body 10; An ultrasonic sensor 16 mounted at a center position of the opening of the ultrasonic wave reflector 14 so as to sense an ultrasonic sound according to the partial discharge from the partial discharge measuring object 30; A camera 18 mounted at a center position of the upper end of the ultrasonic wave reflector 14 to photograph the partial discharge measurement object 30; A display device (27) for displaying an image photographed by the camera (18) while the waveform of the ultrasonic wave measured by the ultrasonic sensor (16) is displayed; An ultrasonic amplifier 21 connected to the ultrasonic sensor 16 for amplifying a signal from the ultrasonic sensor 16 and an audible signal converter 21 for converting the signal amplified by the ultrasonic amplifier 21 into audible frequencies An AD conversion and an FFT (Fast Fourier Transform) device for converting the amplified analog signal into a digital signal and converting the converted digital signal into a sensor measurement frequency magnitude through a real-time FFT (Fast Fourier Transform) algorithm 23), a signal processing device (20) configured to convert an audio frequency into a waveform representing the size of an ultrasonic wave and to convert an image photographed by the camera (18) into a video data signal; And a computer (28) connected via the communication device (25) to the integrated signal processing device (20)
A driving means 40 mounted at a bottom position of the ultrasonic reflector 14 to drive the ultrasonic reflector 14 up and down and left and right so that the ultrasonic sensor 16 can scan a predetermined area of the partial discharge measuring object 30, and;
The driving of the driving means 40 is controlled in order to adjust the moving angle and the direction of the ultrasonic reflecting glow 14 so that the ultrasonic wave after the scan of the predetermined area of the ultrasonic sensor 16 is transmitted to the signal processing unit 20 And controls the ultrasonic wave reflector 14 to stop at a position at which the maximum signal of the ultrasonic wave waveform (the signal of which the partial discharge intensity is high) is generated in accordance with the command of the signal processing device 24 A scan control unit 42;
Wherein the portable ultrasound partial discharge measuring device has an unmanned surveillance and automatic scanning function.
The method according to claim 1,
The transmission unit 40 and the scan control unit 42 are modularized in one body to support the bottom of the ultrasonic reflector 14 and assembled to the bottom of the body for modularization. Wherein the portable ultrasound partial discharge measuring device has an unmanned surveillance and automatic scanning function.
The camera 18 and the ultrasonic reflector 14 integrally formed with the body 10 including the body 10 are directed to the measurement object 30 and then the scan control unit 42 is moved to the transmission means 40 The method comprising: issuing a drive command for scanning;
The ultrasonic wave reflector 14 is moved up and down and left and right along the range of the predetermined range of the measurement object 30 and the ultrasonic sound when the partial discharge is generated by the ultrasonic sensor 16 is scanned Sensing;
Receiving the ultrasound signals scanned and detected by the scan control unit 42 and transmitting the ultrasound signals to the signal processing unit 24 of the integrated signal processing unit 20;
Analyzing the ultrasound signal scanned and detected by the signal processing unit 24 in real time to determine and determine the position at which the maximum signal of the ultrasonic waveform (the signal of the partial discharge intensity signal side) is generated;
The ultrasonic sensor 16 is moved from the signal processing unit 24 to the scan control unit 42 so as to move the ultrasound sensor 16 to a position where the maximum signal of the ultrasonic waveform 14), < / RTI >
The scan control unit 42 that has received the position adjustment command of the signal processing unit 24 commands the drive unit 40 to drive the position adjustment drive signal and the ultrasonic wave reflector 14 transmits the maximum signal of the ultrasonic waveform A signal at a higher intensity side) is generated and stopped;
And the ultrasonic sensor 16 of the ultrasonic reflector 14 can automatically detect an ultrasonic signal at a portion where the maximum signal of the measurement object is generated, A portable ultrasound partial discharge measuring method having a function.
The method of claim 3,
When analyzing the ultrasound signal detected through the scan in the signal processor 24 in real time, the maximum signal of the ultrasound waveform in the scan region is continuously compared with the current ultrasound intensity measured in real time during the scan Wherein the position of the ultrasound partial discharge is measured by the ultrasound diagnostic apparatus.
The method of claim 3,
Sensing an ultrasonic signal at a portion where the maximum signal of the measurement object is generated in the ultrasonic sensor 16 of the stopped ultrasonic wave reflector 14 after the positional movement and photographing the ultrasonic signal with the camera 18;
The ultrasound signal measured by the ultrasonic sensor 16 and the image data photographed by the camera 18 are transmitted to the integrated signal processor 20 and stored therein;
Transmitting an abnormal signal to the headphone 26 or transmitting an abnormal signal to the computer 28 when the stored ultrasound signal is greater than the maximum allowable size;
Further comprising the steps of: detecting an ultrasound partial discharge of the portable ultrasound;
The method of claim 5,
When the stored ultrasound signal is smaller than the maximum allowable size, a step of bringing the scan processing unit (42) of the integrated signal processing device (20) to a scan control unit (42) Wherein the ultrasound partial discharge measuring method comprises the steps of:

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