CN109612572A - For quickly identifying the device and method of high voltage reactor abnormal sound sound source position - Google Patents
For quickly identifying the device and method of high voltage reactor abnormal sound sound source position Download PDFInfo
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- CN109612572A CN109612572A CN201811363072.7A CN201811363072A CN109612572A CN 109612572 A CN109612572 A CN 109612572A CN 201811363072 A CN201811363072 A CN 201811363072A CN 109612572 A CN109612572 A CN 109612572A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
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- 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
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Abstract
The present invention relates to a kind of for quickly identifying the device and method of high voltage reactor abnormal sound sound source position, since the center of interior connection ring is equipped with camera, more linking arms are provided between interior connection ring and outer connection ring, multiple sound collection sensors are connected on every linking arm, in this way, a sound collection sensor array is formed on connection frame, when needing to detect high voltage reactor abnormal sound sound source position, the voice signal that each sound collection sensor detection sound source issues, since the sound collection sensor of different location is different from the distance between sound source position, so just to have delay inequality other for voice signal detected by each sound collection sensor, the ultrasonogram for determining sound position is just capable of forming according to the voice signal that each sound collection sensor detects, ultrasonogram and the image figure that camera takes is Chong Die just It is capable of determining that the sound source position that abnormal sound occurs on high voltage reactor.
Description
Technical field
The present invention relates to a kind of for quickly identifying the device and method of high voltage reactor abnormal sound sound source position.
Background technique
Extra-high voltage reactor equipment can make a sound at runtime, and a large amount of status informations of reactor are contained in sound,
When extra-high voltage reactor breaks down, its voice signal can also occur to change accordingly, occur being different from normal operating conditions
Sound (abnormal sound).The acquisition of voice signal is not needed using contact equipment, and has that sensor arrangement is flexible and convenient, does not produce
Raw electromagnetic interference measures the advantages such as simple, therefore the failure of the extra-high voltage reactor equipment more than widely distributed and quantity is suitble to know
It does not analyze.But since acoustical signal propagates acquisition in air, the reflection of excessive ambient noise and sound is propagated etc. all can be to examining
Disconnected result impacts, therefore conventional noise analysis approach can not accurately judge the position that abnormal sound generates.Current different
It rings in identification method, is usually only engaged in the experienced master worker of power transformation operation for many years when doing inspection, according to human ear close to high pressure
The sound that power equipment listens to equipment sending judges its operating status.This method for relying primarily on human ear auscultation has very big
Restricted, ordinary circumstance only breaks down and ability is distinguishable in the more apparent situation of failure.Extra-high voltage reactor equipment
Abnormal sound can be divided into transient state and stable state abnormal sound, for certain transient state periodicity abnormal sounds, short duration, conventional steady state process
Mode is difficult to capture.Therefore
Therefore it is badly in need of a kind of quick online recognition of achievable extra-high voltage reactor abnormal sound and the dress with extensive replicability
It sets.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide one kind for quickly identifying high-voltage electricity
The device and method of anti-device abnormal sound sound source position can easily and accurately identify the sound source position of high voltage reactor abnormal sound.
To achieve the above object, the present invention provides a kind of for quickly identifying the dress of high voltage reactor abnormal sound sound source position
Set, adopt the following technical scheme that it is a kind of for quickly identifying the device of high voltage reactor abnormal sound sound source position, including connection frame,
Support frame, the connection frame include the outer connection ring and interior connection ring being arranged concentrically, the center connection of the interior connection ring
There is camera, more linking arms are connected between interior connection ring and outer connection ring, each linking arm is rotated around the center of interior connection ring
It is arranged symmetrically, is being equipped with sound collection sensing at the position interior connection ring center L1, L2 ... Ln on every linking arm
Device；
The sound collection sensor, camera are communicated to connect with signal processing system；The signal processing system root
According to the image signal of received voice signal and camera acquisition obtain the position of abnormal sound sound source.
Preferably, 5 linking arms are connected between the interior connection ring and outer connection ring.
Preferably, the center of connection ring is origin within, wherein a linking arm is benchmark linking arm, reference connection arm edge
Helix represented by following helix equation extends:
Wherein, 0.05≤r≤0.5.
Preferably, apart from 0.05 meter of interior connection ring center, 0.09 meter, 0.13 meter, 0.17 meter, 0.21 on every linking arm
Sound collection sensor is equipped at rice, 0.25 meter of position.
Preferably, the sound collection sensor is 1/4 inch capacitive microphone, sensitivity 50mv/Pa, highest test
Sound pressure level 126dB.
Preferably, the sound collection sensor is detachably connected on linking arm.
Preferably, support frame as described above includes telescopic rod and tripod, and the upper end of telescopic rod is connect with the connection frame, is stretched
The lower end of bar is connected on tripod；The connection frame can swing the angle of setting around the axis of telescopic rod.
Correspondingly with a kind of device for quickly identifying high voltage reactor abnormal sound sound source position of the invention, the present invention is gone back
A kind of method for quickly identifying high voltage reactor abnormal sound sound source position is provided, by adopting the above technical scheme or its is any preferably
Technical solution described in for quickly identifying that the device of high voltage reactor abnormal sound sound source position carries out operation, including walk as follows
It is rapid:
1) position for adjusting connection frame, makes connection frame face high voltage reactor to be detected, the center of interior connection ring with
The detection faces center of high voltage reactor is in same horizontal line；
2) using camera acquisition testing face image information and pass to signal processing system, signal processing system is to inspection
Survey face carries out grid dividing；
3) signal processing system scans each mesh point one by one and reconstructs the reconstruct voice signal for obtaining each mesh point；
4) sound collection sensor acquires the actual sound signal of each mesh point, and signal processing system is by the weight of each mesh point
Structure voice signal and actual sound Signal averaging sum and export calculated value；Mesh point corresponding to calculated maximum is in high-voltage electricity
Corresponding position, that is, sound source position on anti-device.
10, preferably, in the step 4), the formula of the calculated value of signal processing system output are as follows:
In formula, d is the distance between sound source and sound transducer, and t indicates the sampling time, and M is microphone quantity, wlIt is
The weighting coefficient of l microphone, pl(ω) is that microphone receives signal,For reconstruction signal, ω indicates the circle frequency of sound
Rate, Δ tlFor l microphone and with reference to the time delay between microphone.
As described above, a kind of device and side for quickly identifying high voltage reactor abnormal sound sound source position of the present invention
Method has the advantages that in a kind of device for quickly identifying high voltage reactor abnormal sound sound source position of the invention,
Since the center of interior connection ring is equipped with camera, more linking arms are provided between interior connection ring and outer connection ring, often
Multiple sound collection sensors are connected on root linking arm, in this way, being formed a sound collection sensor array on connection frame
Column, when needing to detect high voltage reactor abnormal sound sound source position, the voice signal that each sound collection sensor detection sound source issues,
Since the sound collection sensor of different location is different from the distance between sound source position, so each sound collection sensor is examined
The voice signal measured just has that delay inequality is other, is just capable of forming really according to the voice signal that each sound collection sensor detects
The ultrasonogram for making sound position is just capable of determining that high voltage reactor for ultrasonogram is Chong Die with the image figure that camera takes
The upper sound source position that abnormal sound occurs.It can be seen that one kind of the invention is for quickly identifying high voltage reactor abnormal sound sound source position
Device and method, can easily and accurately identify the sound source position of high voltage reactor abnormal sound, structure is simple, easy to use.
Detailed description of the invention
A kind of structure for quickly identifying the device of high voltage reactor abnormal sound sound source position that Fig. 1 is shown as of the invention is shown
It is intended to.
Fig. 2 is shown as the structural schematic diagram of connection frame.
Fig. 3 is shown as distribution schematic diagram of each sound collection sensor on connection frame.
Fig. 4 is shown as that a kind of device for quickly identifying high voltage reactor abnormal sound sound source position of the invention is utilized to detect
The schematic illustration of sound source position.
Fig. 5 is shown as the connection schematic diagram of sound collection sensor, camera and signal processing system.
Fig. 6-1 is shown as the array schematic diagram of the sound collection sensor of spirality array.
Fig. 6-2 is shown as the sound source position schematic diagram using the sound collection sensor detection of spirality array in Fig. 6-1,
Sound source position is located at the position of institute, array center face.
Fig. 7-1 is shown as the array schematic diagram of the sound collection sensor of rectangular array.
Fig. 7-2 is shown as the sound source position schematic diagram of the sound collection sensor detection using the rectangular array in Fig. 7-1,
Sound source position is located at the position of institute, array center face.
Fig. 8-1 is shown as the array schematic diagram of the sound collection sensor of cross array.
Fig. 8-2 is shown as illustrating using the sound source position of the sound collection sensor detection of the cross array in Fig. 8-1
Figure, sound source position are located at the position of institute, array center face.
Component label instructions
1 connection frame
2 outer connection rings
Connection ring in 3
4 linking arms
5 support frames
6 telescopic rods
7 tripods
8 cameras
9 connecting holes
10 sound collection sensors
11 signal processing systems
12 detection faces
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification to be taken off
The content shown is not intended to limit the invention enforceable qualifications so that those skilled in the art understands and reads, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the present invention
Under the effect of can be generated and the purpose that can reach, it should all still fall in disclosed technology contents and obtain the model that can cover
In enclosing.Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be also only
Convenient for being illustrated for narration, rather than to limit the scope of the invention, relativeness is altered or modified, in no essence
It changes under technology contents, when being also considered as the enforceable scope of the present invention.
As shown in Figures 1 to 4, the present invention provides a kind of for quickly identifying the dress of high voltage reactor abnormal sound sound source position
It sets, including connection frame 1, support frame 5, the connection frame 1 includes the outer connection ring 2 and interior connection ring 3 being arranged concentrically, the interior company
The center for connecing ring 3 is connected with camera 8, and more linking arms 4 are connected between interior connection ring 3 and outer connection ring 2, each to connect
Arm 4 is arranged in rotational symmetry around the center of interior connection ring 3, apart from interior connection ring 3 center L1, L2 ... on every linking arm 4
Sound collection sensor 10 is equipped at the position Ln；As shown in figure 5, the sound collection sensor 10, camera 8 are and signal
Processing system 11 communicates to connect；The signal processing system 11 according to the image that acquires of received voice signal and camera 8
Signal obtains the position of abnormal sound sound source.
It, can also be in connection frame for the ease of the connection of sound collection sensor 10, camera 8 and signal processing system 11
It is arranged on 1 and adopts the LAM interface being connected and bnc interface and its corresponding connecting line with sound collection sensor 10 and NI number respectively.
The LAM interface is located at 4 back of linking arm, is connected with 5 microphone jack of φ, is connected to array support member by wiring
The bnc interface of front end, one bnc interface of every 6 LAM mouthfuls of correspondences.Support frame as described above 5 can by such as plastics, rubber, fiber or
The insulating materials such as ceramics are made, and have electrical isolation and high voltage bearing performance.
In a kind of device for quickly identifying high voltage reactor abnormal sound sound source position of the invention, due to interior connection ring
3 center is equipped with camera 8, and more linking arms 4, every linking arm are provided between interior connection ring 3 and outer connection ring 2
Multiple sound collection sensors 10 are connected on 4, in this way, 10 array of sound collection sensor is formed on connection frame 1,
When needing to detect high voltage reactor abnormal sound sound source position, each sound collection sensor 10 detects the voice signal that sound source issues,
Since the sound collection sensor 10 of different location is different from the distance between sound source position, so each sound collection sensor 10
It is other that detected voice signal just has a delay inequality, according to each sound collection sensor 10 simultaneously collected voice signal into
The analysis of row acoustics imaging, and abnormal sound occurs with Chong Die be just capable of determining that on high voltage reactor of image figure that camera 8 takes
Sound source position.It can be seen that a kind of device and side for quickly identifying high voltage reactor abnormal sound sound source position of the invention
Method can easily and accurately identify the sound source position of high voltage reactor abnormal sound, and structure is simple, easy to use.With prior art phase
Than technical solution of the present invention is realized in the extra-high voltage reactor course of work by the microphone array optimized due to mechanical event
The quick positioning of barrier and the abnormal sound sound source of generation solves in current extra-high voltage reactor work abnormal sound identification process only with human ear
The problem of subjectivity of judgement is big, low efficiency, is applicable to middle far-field measurement, and recognition efficiency and positioning accurate greatly improved
Degree.
In a kind of device for quickly identifying high voltage reactor abnormal sound sound source position of the invention, outer 2 He of connection ring
Interior connection ring 3 is that each linking arm 4 provides the basis of installation, and the central diameter of outer connection ring 2 is 0.5m, the outer diameter of outer connection ring 2 with it is interior
The difference of diameter is 0.02m, and the central diameter of interior connection ring 3 is 0.1m, and the outer diameter of interior connection ring 3 and the difference of internal diameter are 0.02m.Interior connection ring
3 and 2 concentric of outer connection ring be arranged, the more linking arms 4 connected between interior connection ring 3 and outer connection ring 2 are evenly arranged on interior company
Around the center for connecing ring 3, it is preferable that as shown in Figures 1 to 4, be connected with 5 institutes between the interior connection ring 3 and outer connection ring 2
Linking arm 4 is stated, the deflection angle between two adjacent linking arms 4 is 72 degree, i.e., by a linking arm 4 around interior connection ring 3
72 degree of circular rotating will rotate to the position of the coincidence of linking arm 4 adjacent thereto.Each 4 shape of linking arm is identical, is spiral
Shape linking arm 4,3 center of connection ring within of linking arm 4 is that the helix of starting point extends, as shown in figure 3, preferably as one kind
Ground embodiment, within the center O of connection ring 3 be origin, to be horizontally to the right X-axis positive direction, straight up be Y-axis positive direction
Coordinate system is established, wherein a linking arm 4 is benchmark linking arm 4, the R1 helix along Fig. 3 of reference connection arm 4 extends, R1 spiral
Line equation indicates are as follows:
Wherein, 0.05≤r≤0.5.
R1, R2, R3, R4, R5 helix in Fig. 3 extend 5 linking arms 4 in Fig. 2 respectively.
As shown in Figure 1 to Figure 3,6 sound collection sensors 10 are connected on every linking arm 4, on every linking arm 4
Each sound collection sensor 10 is respectively L1, L2 ... L6 at a distance from the center of interior connection ring 3, and the radius of C1 circle is in Fig. 3
The radius of L1, C2 circle is that the radius of L2, C3 circle is that the radius that the radius that the round radius of L3, C4 is L4, C5 circle is L5, C6 circle is
L6, as a preferred embodiment, L1=0.05 meters, L2=0.09 meters, L3=0.13 meters, L4=0.17 meters, L5=
0.21 meter, L6=0.25 meters.As shown in figure 3, one 5 linking arms 4 are shared between interior connection ring 3 and outer connection ring 2, every connection
6 sound collection sensors 10 are connected on arm 4, one shares 30 sound collection sensors, 10,30 microphone speaker positions
It sets and is all corresponding with number, number since on helix 1, be then followed successively by helix 2,3,4,5, each helix is from leaning on
It is numbered at 3 center of connection ring in close, number order is followed successively by 1,2,3 ..., 30, according to linear relationship, can be calculated
The position coordinates of 30 microphones in an array, are as follows:
In a kind of device for quickly identifying high voltage reactor abnormal sound sound source position of the invention, the sound collection
Sensor 10 is for acquiring the sound that sound source is issued, as a preferred embodiment, the sound collection sensor 10
For 1/4 inch capacitive microphone, sensitivity 50mv/Pa, highest tests sound pressure level 126dB.For the ease of installation and replacement institute
Sensor is stated, the sound collection sensor 10 is detachably connected on linking arm 4, as shown in Fig. 2, can be in linking arm 4
Upper setting connecting hole 9, sound collection sensor 10 is inserted in connecting hole 9.
Using it is of the invention it is a kind of for quickly identifying the device of high voltage reactor abnormal sound sound source position when, need basis
The situation at scene move up and down, swing to the position of connection frame 1 etc. adjustment so that connection frame 1 can face need to detect
High voltage reactor, for this purpose, as shown in Figure 1, support frame as described above 5 includes telescopic rod 6 and tripod 7, the upper end of telescopic rod 6 and institute
The connection of connection frame 1 is stated, the lower end of telescopic rod 6 is connected on tripod 7；The connection frame 1 can be put around axis of telescopic rod 6 or so
The angle of dynamic setting.In this way, can need to make to adjust the position of connection frame 1 according to field condition.
In a kind of device for quickly identifying high voltage reactor abnormal sound sound source position of the invention, since each sound is adopted
Collect sensor 10 along a plurality of helix distribution around the setting of interior 3 center of connection ring, each sound collection sensor 10 is not equidistant
Ground distribution, so signal processing system 11 is not easy according to the calculated value that the signal that each sound collection sensor 10 acquires is exported
There is interference to obscure, therefore a kind of device for quickly identifying high voltage reactor abnormal sound sound source position of the invention can be quick
Accurately identify sound source position.
Compared with prior art, the invention has the characteristics that:
1) sound collection of multichannel and processing mode enhance the anti-interference ability of signal processing；
2) arrangement mode of the helix array distribution of sound collection sensor 10 effectively increases the precision of identification of sound source；
3) easy to use, testing efficiency is high.
Correspondingly with a kind of device for quickly identifying high voltage reactor abnormal sound sound source position of the invention, the present invention is gone back
A kind of method for quickly identifying high voltage reactor abnormal sound sound source position is provided, by adopting the above technical scheme or its is any preferably
Technical solution described in for quickly identify high voltage reactor abnormal sound sound source position device carry out operation, referring to FIG. 4, packet
Include following steps:
1) position for adjusting connection frame 1, makes 1 face of connection frame high voltage reactor to be detected, the center of interior connection ring 3
It is in same horizontal line with 12 center of detection faces of high voltage reactor；
2) using 8 acquisition testing face 12 of camera image information and pass to signal processing system 11, signal processing system
11 pairs of detection faces 12 of uniting carry out grid dividing；
3) signal processing system 11 scans each mesh point one by one and reconstructs the reconstruct sound letter for obtaining each mesh point
Number；
4) sound collection sensor 10 acquires the actual sound signal of each mesh point, and signal processing system 11 is by each mesh point
Reconstruct voice signal and actual sound Signal averaging sum and export calculated value；Mesh point corresponding to calculated maximum is in height
Press position, that is, sound source position corresponding on reactor.
Preferably, in the step 4), the formula for the calculated value that signal processing system 11 exports are as follows:
In formula, d is the distance between sound source and sound transducer, and t indicates the sampling time, and M is microphone quantity, wlIt is
The weighting coefficient of l microphone, pl(ω) is that microphone receives signal,For reconstruction signal, ω indicates the circle of sound
Frequency, Δ tlFor l microphone and with reference to the time delay between microphone.
It is illustrated in figure 4 microphone array test schematic, sound source A is located in detection faces 12, sound collection sensor 10
It is horizontal and towards detection faces 12 first using the center of connection frame 1 as coordinate origin architecture space coordinate system on connection frame 1
Direction is Z axis positive direction, the parallel arrangement of the plane and detection faces 12 where each sound collection sensor 10 on connection frame 1,
The center O and 12 center O ' of detection faces of connection frame 1 are located in same horizontal line.Measurement starts, and first will test 12 grid division of face,
Since each 10 present position of sound collection sensor is different, voice signal phase received by each sound collection sensor 10
There are time delays between mutually, by will test reception signal and and sound collection after 12 grid division of face on reconstructed mesh point
10 array received of sensor to voice signal be overlapped summation, when reconstruction point B location and when sound source A position consistency, due to
It is maximum that end value is exported when signal phase is consistent, remaining reconstruct position finally obtains sound since phase perturbations output result reduces
The information of the position of source A, the formula for the calculated value that signal processing system 11 exports are above-mentioned formula (3).
Fig. 6-1 is shown as the array schematic diagram of the sound collection sensor 10 of spirality array, and Fig. 6-2 is shown as utilizing figure
The sound source position simulative optimization result schematic diagram that the sound collection sensor 10 of spirality array detects in 6-1, sound source position position
In the position of institute, array center face.Optimum results shown in Fig. 6-2 are by the way of numerical simulation, in simulation laterally and longitudinally
Measurement subtended angle be 45 °, frequency be 5kHz sound source be located at 12 center of detection faces, under 10dB Dynamically Announce range,
10 recognition result of sound collection sensor of spirality array is accurate and pollution-free.As shown in Fig. 7-1 and Fig. 7-2, as a comparison
Equally with 30 sound collection sensors 10 and 10 array of sound collection sensor of the consistent rectangular mesh of array sizes
Recognition result has also appeared a large amount of symmetrical false sound sources other than real sources, and recognition result is not accurate enough.Such as figure
8-1 and Fig. 8-2 show using cross array distribution 10 array of sound collection sensor identification sound source as a result, true sound
Source position is in the center of Fig. 8-2, it is seen then that there are also a large amount of false interference other than real sources, recognition result is not quasi- enough
Really.
With prior art ratio, a kind of device for quickly identifying high voltage reactor abnormal sound sound source position of the invention and
Method has the following characteristics that
1) in such a way that 10 array of sound collection sensor acquires data simultaneously, the anti-dry of signal acquisition is effectively increased
Ability is disturbed, so that extra-high voltage reactor sound also may be implemented in the substation of ambient noise serious interference and converter station environment
The accurate acquisition of signal；
2) designed by spiral array structure so that position of the sound collection sensor 10 in spatial position also at
The arrangement of spiral shape rule, can effectively improve the responding range of abnormal sound identification, be conducive to the abnormal sound source removing under intense source interference；
3) position of 10 collection surface of sound collection sensor is adjusted in height and space angle by adjustable support frame 5
It sets, electric operation is easy, can capture the abnormal sound position outside detection faces 12 in time, avoid the frequent shifting of entire array system
It is dynamic.
In conclusion the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of for quickly identifying the device of high voltage reactor abnormal sound sound source position, characterized in that including connection frame (1), branch
Support (5), the connection frame (1) include the outer connection ring (2) and interior connection ring (3) being arranged concentrically, the interior connection ring (3)
Center is connected with camera (8), and more linking arms (4) are connected between interior connection ring (3) and outer connection ring (2), are respectively connected
It connects arm (4) to arrange in rotational symmetry around the center of interior connection ring (3), apart from interior connection ring (3) center on every linking arm (4)
Sound collection sensor (10) are equipped at the position L1, L2 ... Ln；
The sound collection sensor (10), camera (8) are communicated to connect with signal processing system (11)；The signal processing
System (11) according to the image signal of received voice signal and camera (8) acquisition obtain the position of abnormal sound sound source.
2. according to claim 1 for quickly identifying the device of high voltage reactor abnormal sound sound source position, it is characterised in that:
5 linking arms (4) are connected between the interior connection ring (3) and outer connection ring (2).
3. according to claim 1 for quickly identifying the device of high voltage reactor abnormal sound sound source position, it is characterised in that:
Within the center of connection ring (3) be origin, wherein linking arm (4) is benchmark linking arm (4), reference connection arm (4) along with
Helix represented by lower helix equation extends:
Wherein, 0.05≤r≤0.5.
4. according to claim 1 for quickly identifying the device of high voltage reactor abnormal sound sound source position, it is characterised in that:
Apart from 0.05 meter, 0.09 meter, 0.13 meter, 0.17 meter, 0.21 meter, 0.25 meter of interior connection ring (3) center on every linking arm (4)
Sound collection sensor (10) are equipped at position.
5. according to claim 1 for quickly identifying the device of high voltage reactor abnormal sound sound source position, it is characterised in that:
The sound collection sensor (10) is 1/4 inch capacitive microphone, sensitivity 50mv/Pa, highest test sound pressure level
126dB。
6. according to claim 1 for quickly identifying the device of high voltage reactor abnormal sound sound source position, it is characterised in that:
The sound collection sensor (10) is detachably connected on linking arm (4).
7. according to claim 1 for quickly identifying the device of high voltage reactor abnormal sound sound source position, it is characterised in that:
Support frame as described above (5) includes telescopic rod (6) and tripod (7), and the upper end of telescopic rod (6) is connect with the connection frame (1), is stretched
The lower end of bar (6) is connected on tripod (7)；The connection frame (1) can swing the angle of setting around the axis of telescopic rod (6)
Degree.
8. a kind of method for quickly identifying high voltage reactor abnormal sound sound source position, using described in claim 1 for fast
The device of speed identification high voltage reactor abnormal sound sound source position carries out operation, includes the following steps:
1) position for adjusting connection frame (1), makes connection frame (1) face high voltage reactor to be detected, in interior connection ring (3)
Detection faces (12) center of the heart and high voltage reactor is in same horizontal line；
2) it utilizes the image information in camera (8) acquisition testing face (12) and passes to signal processing system (11), signal processing
System (11) carries out grid dividing to detection faces (12)；
3) signal processing system (11) scans each mesh point one by one and reconstructs the reconstruct voice signal for obtaining each mesh point；
4) sound collection sensor (10) acquires the actual sound signal of each mesh point, and signal processing system (11) is by each mesh point
Reconstruct voice signal and actual sound Signal averaging sum and export calculated value；Mesh point corresponding to calculated maximum is in height
Press position, that is, sound source position corresponding on reactor.
9. the method according to claim 8 for quickly identifying high voltage reactor abnormal sound sound source position, it is characterised in that:
In the step 4), the formula of the calculated value of signal processing system (11) output are as follows:
In formula, d is the distance between sound source and sound transducer, and t indicates the sampling time, and M is microphone quantity, wlIt is passed for No. l
The weighting coefficient of sound device, pl(ω) is that microphone receives signal,For reconstruction signal, ω indicates the circular frequency of sound, Δ
tlFor l microphone and with reference to the time delay between microphone.
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| CN111308424A (en) * | 2020-02-26 | 2020-06-19 | 国网上海市电力公司 | Transformer substation equipment audible sound source positioning method based on summation and MUSIC combined algorithm |
| CN111397726A (en) * | 2020-03-23 | 2020-07-10 | 深圳供电局有限公司 | Fault detection system based on acoustic imaging |
| CN111948605A (en) * | 2020-08-12 | 2020-11-17 | 上海交通大学 | Portable noise source detection device integrating involute array and FPGA |
| CN114623984A (en) * | 2022-05-16 | 2022-06-14 | 之江实验室 | Acoustic imager based on heterogeneous microphone array |
| CN118425886A (en) * | 2024-07-04 | 2024-08-02 | 浙江图盛输变电工程有限公司温州科技分公司 | Low-frequency sound source imaging method and device |
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