CN106644054A - Near-field noise scanning testing device - Google Patents
Near-field noise scanning testing device Download PDFInfo
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- CN106644054A CN106644054A CN201611238573.3A CN201611238573A CN106644054A CN 106644054 A CN106644054 A CN 106644054A CN 201611238573 A CN201611238573 A CN 201611238573A CN 106644054 A CN106644054 A CN 106644054A
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- 238000012360 testing method Methods 0.000 title abstract description 29
- 239000000523 sample Substances 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims description 30
- 238000006073 displacement reaction Methods 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 10
- 239000011358 absorbing material Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 2
- 238000005259 measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011173 large scale experimental method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a near-field noise scanning testing device, and belongs to the technical field of noise detection. The device comprises a pedestal, a first linear motion member, a second linear motion member, a third linear motion member, and a fixing structure for fixing an acoustic velocity probe. The third linear motion member is disposed on the pedestal. The first and second linear motion members are in sliding connection, and the second and third linear motion members are in sliding connection. The first, second and third linear motion members are perpendicular to each other. The fixing structure is slidingly connected with the first linear motion member. Therefore, when the device moves on the surface of a detected object, the device can guarantee the consistency of a moving speed and a distance, improves the accuracy of a test result, and prevents a conventional hand-held mode from causing personal safety hidden troubles. Compared with an industrial mechanical arm, the device is convenient to operate, and is easy to control.
Description
Technical field
The present invention relates to noise detection technique field, more particularly to a kind of near field noise scanning tester.
Background technology
For motor, electromotor or other need the noise testing of equipment that large-scale experiment stand could run, due to examination
Testing stand etc., to compare the sound that measured piece itself sends larger, so can be tested using near field noise scanning, near field noise
Sweep test is referred to is popped one's head in the velocity of sound, is scanned on the test surfaces apart from measured piece certain distance, obtains measured piece surface
Noise profile figure, the position of noise source is determined by noise profile figure, and then analyze and solve the noise problem of measured piece.
With reference to shown in Fig. 1, when using velocity of sound probe test measured piece near field noise, if necessary to scan on a face
Noise profile, needs are scanned in the scanning plane 2 apart from the certain distance of measured piece 1；In prior art, near field noise is swept
Test is retouched, is typically scanned by the hand-held velocity of sound probe of tester, it is also possible to which velocity of sound probe is clamped by industrial machinery arm
It is scanned.
By way of prior art, because when the hand-held velocity of sound probe of tester is scanned, staff cannot ensure
The velocity of sound is popped one's head in the accuracy and concordance of the measuring distance and translational speed moved by side part surface, so that test result
Error is larger, and by human hand held, when apart from measured piece, for example motor, electromotor etc. are nearer, for the personal safety of tester has
Very big hidden danger；On the other hand, because velocity of sound probe is very light and handy, by way of industrial machinery arm is clamped, test can be caused
The waste of cost, and there are problems that control it is complicated,.
The content of the invention
In order to improve the accuracy of near-field scan test, reduce the error of test result, while in order to operate simple and carry
The safety of height operation, embodiments provides a kind of near field noise scanning tester.The technical scheme is as follows：
A kind of first aspect, there is provided near field noise scanning tester, described device includes that base, first straight line are moved
Component, second straight line moving link, the 3rd linear motion component and the fixed structure for fixing velocity of sound probe；
The 3rd linear motion component is installed on the base, and the first straight line moving link is straight with described second
Line moving link and the second straight line moving link are slidably connected respectively with the described 3rd linear motion component, and described the
One straight line moving link, the second straight line moving link and the 3rd linear motion component are mutually perpendicular to two-by-two；
The fixed structure is slidably connected the first straight line moving link.
With reference in a first aspect, in the first mode in the cards, described device is also included for driving the fixation
The first drive mechanism that structure is slided on the first straight line moving link, for driving the first straight line moving link to exist
The second drive mechanism slided on the second straight line moving link, and for driving the second straight line moving link in institute
State the 3rd drive mechanism slided on the 3rd linear motion component.
With reference to the first mode in the cards of first aspect, in second mode in the cards, described first
Drive mechanism, second drive mechanism and the 3rd drive mechanism include respectively motor.
With reference to the first mode in the cards of first aspect, first is straight described in the third mode in the cards
Line moving link, the second straight line moving link and the 3rd linear motion component are at least ball screw framework or gear
One kind in tooth bar fit structure or chain drive structure.
With reference to first aspect to first aspect the third in any one mode in the cards, may be real at the 4th kind
In existing mode, described device also includes the first slide block, and the first straight line moving link includes the first slide rail, the fixed knot
Structure is slidably connected first slide rail by first slide block；
The second straight line moving link includes the second slide rail, and described device also includes being arranged on first slide rail and institute
State the second slide block between the second slide rail；First slide rail is slidably connected second slide rail by second slide block；
The 3rd linear motion component includes the 3rd slide rail, and described device also includes being arranged on second slide rail and institute
State the 3rd slide block between the 3rd slide rail；Second slide rail is slidably connected the 3rd slide rail by the 3rd slide block.
With reference to the 4th kind of mode in the cards of first aspect, in the 5th kind of mode in the cards, described first
Slide rail is detachably connected second slide block, and second slide rail is detachably connected the 3rd slide block.
With reference to the third any one mode in the cards of first aspect to first aspect, may realize at the 6th kind
Mode in, the fixed structure includes clamping structure, and the clamping structure is used to clamp velocity of sound probe.
With reference to the 6th kind of mode in the cards of first aspect, in the 7th kind of mode in the cards, the clamping
Structure and the structure that the part of the velocity of sound probe contacts is that sound-absorbing material is constituted.
With reference to the third any one mode in the cards of first aspect to first aspect, may realize at the 8th kind
Mode in, described device also includes displacement transducer, the peace that the installation site of institute's displacement sensors is popped one's head in the velocity of sound
Holding position is corresponding；Preferably, institute's displacement sensors are installed on first slide block.
With reference to the third any one mode in the cards of first aspect to first aspect, may realize at the 9th kind
Mode in, the base be provided with the movable pulley for moving for the base and for lock the movable pulley locking tie
Structure；Preferably, the 3rd linear motion component is removably mounted on the base.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：The device provided by the present invention, because
For the first straight line moving link and second straight line moving link, second straight line moving link and the 3rd linear motion structure of the device
It is mutually perpendicular to two-by-two between part difference slidable connection, and three linear motion components, then forms the motion with x, y, z axle and tie
Structure, and fixed structure is slidably connected with first straight line moving link, and the fixed structure is used to fix velocity of sound probe, so as to fixation
Being slidably connected between structure and first straight line moving link can be such that velocity of sound probe moves i.e. along x along the axle that first straight line is moved
Axle is moved, and being slidably connected between first straight line moving link and second straight line moving link can be such that velocity of sound probe moves along y-axis
Dynamic, being slidably connected between second straight line moving link and the 3rd linear motion component is moved along the z-axis can velocity of sound probe, from
And passing through the device can carry out Noise scan test to each orientation of measured piece, velocity of sound probe can be carried out in measurement process
It is fixed such that it is able to ensure the concordance of translational speed and distance, improve the accuracy of test result and easy to operate, easily
In control, it is to avoid personal safety hidden danger that tradition is caused when carrying out noise testing by hand-held to tester is asked
Topic, while when avoiding the human hand held velocity of sound and popping one's head in, inconsistent due to translational speed and distance causes sampling uneven, causes to test
The larger problem of resultant error；In addition, by the device avoids by setting that industrial machinery arm clamping velocity of sound probe is caused
Standby waste, high cost, the problem that not easily shifted and control is complicated.
Description of the drawings
Technical scheme in order to be illustrated more clearly that the embodiment of the present invention, below will be to making needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, can be obtaining other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the schematic diagram of velocity of sound scanning probe measured piece near field noise provided in an embodiment of the present invention；
Fig. 2 is the overall structure diagram of near field noise scanning tester provided in an embodiment of the present invention；
Fig. 3 is a kind of linear motion element structure schematic diagram provided in an embodiment of the present invention；
Fig. 4 is the part-structure schematic diagram of near field noise scanning tester provided in an embodiment of the present invention；
Fig. 5 is the structural representation for being detachably connected mode provided in an embodiment of the present invention；
Fig. 6 is the structural representation of clamping structure provided in an embodiment of the present invention；
Fig. 7 is the structural representation of the installation site of displacement transducer provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the embodiment of the present invention in it is attached
Figure, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only this
Invent a part of embodiment, rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art exist
The every other embodiment obtained under the premise of creative work is not made, the scope of protection of the invention is belonged to.
Embodiment one
A kind of near field noise scanning tester is embodiments provided, with reference to shown in Fig. 2, the device includes base
40th, first straight line moving link 10, the linear motion component 30 and for fixing the velocity of sound of second straight line moving link the 20, the 3rd
The fixed structure 60 of probe 50；
3rd linear motion component 30 is installed on base 40, first straight line moving link 10 and second straight line moving link
20th, the linear motion of second straight line moving link 20 and the 3rd component 30 difference slidable connection, first straight line moving link 10, the
The two linear motion linear motion components 30 of component 20 and the 3rd are mutually perpendicular to two-by-two；
Fixed structure 60 is slidably connected first straight line moving link 10.
By being mutually perpendicular to two-by-two between this three linear motion components so that this three linear motion components are defined
Motion structure with x, y, z axle, and be slidably connected between any two, so that velocity of sound probe can in space along x, y, z
Axle is moved so that can carry out Noise scan test in each orientation to measured piece by the device.
Further, device also include for drive fixed structure 60 to slide on first straight line moving link 10 first
Drive mechanism, for the second drive mechanism for driving first straight line moving link 10 to slide on second straight line moving link 20,
And the 3rd drive mechanism for driving second straight line moving link 20 to slide on the 3rd linear motion component 30.It is optional
, first drive mechanism, the second drive mechanism and the 3rd drive mechanism can include motor 70 respectively.
Specifically, if the first drive mechanism, the second drive mechanism and the 3rd drive mechanism can include respectively motor 70,
Each motor is located at the side of corresponding linear motion component slide rail, and the axle of each motor connects with corresponding linear motion component
Connect；
Wherein, motor can be by motor controller controls, so that motor exports corresponding measurement parameter；The measurement parameter
Rotational angle and rotating speed can be included, so that can at a certain distance and velocity test measured piece by the velocity of sound probe of the device
Near field noise.
Further, first straight line moving link 10, second straight line moving link 20 and the 3rd move along a straight line component 30 to
It is less ball screw framework or rack-and-pinion fit structure or the one kind in chain drive structure.
Exemplary, can be when the linear motion in figure by taking first straight line moving link 10 as an example with reference to shown in Fig. 3
Component is ball screw framework, and including structural representation during motor 70；As shown in Figure 3, motor 70 is fixed on ball wire
The side of thick stick mechanism, the axle of motor is connected with ball screw framework by key, or can be connected by other means, motor
Can be controlled by special electric machine controller, electric machine controller can according to testing requirement (rotational angle as required and
Rotating speed), to motor output current signal, controlled motor axle exports corresponding rotational angle and rotating speed, by motor shaft and ball
Leading screw is connected, and can drive ball screw turns, carries out so that slide block is moved along line slideway by specified speed and distance
It is dynamic, so as to test the near field noise of measured piece.
Optionally, the first straight line moving link, second straight line moving link and the 3rd linear motion component can also be
Hydraulic pressure slip cylinder mechanism, when the component that moves along a straight line is hydraulic pressure slip cylinder structure, corresponding drive mechanism can also be and hydraulic pressure
The corresponding drive mechanism of slip cylinder mechanism, such as hydraulic cylinder, hydraulic circuit.
In addition, the component that moves along a straight line can also be that other can realize the linear motion component of similar functions, this
Bright embodiment is not limited to this, and it is within the scope of the present invention is protected.
Further, with reference to shown in Fig. 4, device also includes the first slide block 11, and first straight line moving link 10 includes first
Slide rail 12, fixed structure 60 is slidably connected first slide rail 12 by the first slide block 11；Specifically, fixed mechanism 60 can be consolidated
Due to the lower section of the first slide block 11, slided first by the drive fixed mechanism 60 that is slidably connected of the first slide block 11 and the first slide rail 12
Slide on rail, it should be noted that it is that fixed structure 60 is fixed on the first slide block 11, in Fig. 2 and Fig. 3 to illustrate in Fig. 2 and Fig. 4
Not shown in fixed structure 60；
Second straight line moving link 20 includes the second slide rail 21, and device also includes being arranged on the first slide rail 12 and the second slide rail
The second slide block 22 between 21；First slide rail 12 is slidably connected the second slide rail 21 by the second slide block 22；
3rd linear motion component 30 includes the 3rd slide rail 31, and device also includes being arranged on the second slide rail 21 and the 3rd slide rail
The 3rd slide block 32 between 31；Second slide rail 21 is slidably connected the 3rd slide rail 31 by the 3rd slide block 32.
Wherein, fixed structure 60 can be slidably connected with first straight line moving link 10 by the first slide block 11；Fixed knot
Structure 60 directly can also be slidably connected with first straight line moving link 10, such as in fixed structure 60 and the contact of the first slide rail 12
Place is set to the structure of slidable connection, and fixed structure 60 can also slide by other means with first straight line moving link
Connection, the embodiment of the present invention is not limited to this.
Wherein, the first slide rail 12 of the first straight line moving link 10 not shown in Fig. 2 and Fig. 4.
Further, the first slide rail 12 is detachably connected the second slide block 22, and the second slide rail 21 is detachably connected the 3rd slide block
32.Specifically, by taking being detachably connected between the first slide rail 12 and the second slide block 22 as an example, the structure being detachably connected can join
According to shown in Fig. 5, in addition to this it is possible to be detachably connected mode including other, the embodiment of the present invention is to specifically detachably connecting
Connect mode not to be limited.
In addition, the 3rd linear motion component 30 be removably mounted on base 40, the mode of being detachably connected can with it is above-mentioned
Between first slide rail 12 and the second slide block 22 and the second slide rail 21 and the 3rd slide block 32 to be detachably connected mode identical, it is also possible to
Mode is detachably connected for others, the embodiment of the present invention is not limited to this.
By the first slide rail and the second slide block, the second slide rail and the 3rd slide block and the 3rd linear motion component and base it
Between be detachably connected mode so that the device can be dismantled in the case of no, so as to save placement space, and
And be convenient for carrying, while being capable of Fast Installation so that it is more flexibly convenient that the device is used.
Further, fixed structure 60 includes clamping structure, and clamping structure is used to grip velocity of sound probe 50；Specifically
, with reference to shown in Fig. 6, the clamping structure can be made up of the structural representation of clamping structure two clamping plates, in the middle of two clamping plates
Indent is popped one's head in clamping the velocity of sound；If velocity of sound probe is other mechanisms, the clamping structure can correspondingly change, the embodiment of the present invention pair
This is not limited.
It should be noted that the fixed structure 60 can be the clamping structure, then the clamping structure is fixed on into the first cunning
The lower section of block 11 so that move the movement with the first slide block 11 on the first slide rail 12；The fixed structure 60 can also be included
Clamping structure, such as clamping structure are fixed on the lower section of the first slide block 11 by other fixtures, and other fixtures can be fixed
Plate etc., clamping structure and other fixtures are referred to as the fixed structure 60；In addition, if the fixed structure can also be it
He, the embodiment of the present invention is not limited to this, as long as can be used to fix velocity of sound probe 50.
Further, with reference to shown in Fig. 6, the structure that clamping structure is constituted with the part of velocity of sound probe contacts for sound-absorbing material
61；The structure 61 that sound-absorbing material is constituted is used to reducing the impact of noise that the scanning means produces to the test of velocity of sound probe 50,
So as to further increase the accuracy of test result, reduce the error of test result.
Further, the device also includes displacement transducer 80, installation site and the velocity of sound probe 50 of displacement transducer 80
Installation site it is corresponding；Preferably, displacement transducer is installed on the first slide block；In addition, displacement transducer 80 can also
It is installed on fixed structure 60, specifically, the outside of fixed structure 60 can be installed on.Wherein, the displacement transducer 80 is non-
Tangent displacement sensor, for monitoring the distance of velocity of sound probe and measured piece surface, in addition, the displacement transducer 80
Can be other displacement transducers；Exemplary, if fixed structure 60 includes clamping structure, clamping structure is fixed on the first slide block
On 11, then displacement transducer 80 may be located at the side of velocity of sound probe 50 on the first slide block 11, and displacement transducer 80 is slided first
The upper installation site of block 11 is referred to shown in Fig. 7, wherein, the horizontal line of lower section represents measured piece surface, alphabetical s tables in Fig. 7
Show the distance with measured piece surface that displacement transducer is tested；
Preferably, velocity of sound probe 50 fixed structure 60 installation site vertical direction height and displacement transducer 80
Height be consistent, so as to pass through the displacement transducer 80 measurement its distance between with measured piece, and then by this away from
From extrapolating with a distance from velocity of sound probe 50 and measured piece surface so that test is convenient succinct；In addition, velocity of sound probe 50
Installation site on fixed structure 60 can also be other, also can by other means calculate velocity of sound probe and displacement transducer
The distance between, by the distance of displacement sensor, calculate the distance of velocity of sound probe and measured piece surface so as to again.
Further, base 40 is provided with the movable pulley 41 for moving for base and the locking for locking movable pulley 41
Structure 42；With reference to shown in Fig. 1, base also includes support bar 43, the first supporting surface 44 and the second supporting surface 45, the 3rd linear motion
Component is located on second supporting surface 45, and the supporting surface 45 of the first supporting surface 44 and second can be rectangle, and the base 40 may be used also
So that including reinforcing chain structure 46 used and chain fixed structure 47, chain fixed structure is located on support bar 43, the lock
Chain structure 46 is located at and is connected between the corner of the supporting surface of chain fixed structure 47 and first, is entered with the stability to the base 40
Row is reinforced, the stability overall so as to improve the device.
A kind of near field noise scanning tester is embodiments provided, because the first straight line motion structure of the device
Part and second straight line moving link, second straight line moving link and the 3rd linear motion component difference slidable connection, and three
It is mutually perpendicular to two-by-two between linear motion component, then forms the motion structure with x, y, z axle, and fixed structure and first straight line
Moving link is slidably connected, and the fixed structure is used to fix velocity of sound probe, so as to fixed structure and first straight line moving link
Between be slidably connected the velocity of sound axle movement moved along first straight line of popping one's head in can be made to move along the x-axis, first straight line motion structure
Being slidably connected between part and second straight line moving link can make the velocity of sound probe along y-axis movement, second straight line moving link with
Being slidably connected between the 3rd linear motion component is moved along the z-axis can velocity of sound probe, can be to quilt so as to pass through the device
Surveying each orientation of part carries out Noise scan test, velocity of sound probe can be fixed in measurement process such that it is able to ensure to move
The concordance of dynamic speed and distance, improves the accuracy of test result, and easy to operate, it is easy to control, it is to avoid traditional logical
The problem of the personal safety hidden danger caused to tester when hand-held carries out noise testing is crossed, while avoiding human hand held sound
During speed probe, inconsistent due to translational speed and distance causes sampling inequality, the problem for causing test result error larger；Separately
Outward, equipment waste that velocity of sound probe causes, high cost, not easily shifted is clamped by industrial machinery arm by the device avoids
And the problem that control is complicated.
It should be noted that " first " " second " " 3rd " description being related in the embodiment of the present invention is only used for describing mesh
, and it is not intended that indicating or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus,
Defining " first ", the feature of " second " " the 3rd " can express or implicitly include at least one this feature.
Above-mentioned all optional technical schemes, can adopt the alternative embodiment for arbitrarily combining to form the present invention, and here is no longer
Repeat one by one.
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of near field noise scanning tester, it is characterised in that described device include base, first straight line moving link,
Second straight line moving link, the 3rd linear motion component and the fixed structure for fixing velocity of sound probe；
The 3rd linear motion component is installed on the base, and the first straight line moving link is transported with the second straight line
Dynamic component and the second straight line moving link are slidably connected respectively with the described 3rd linear motion component, and described first is straight
Line moving link, the second straight line moving link and the 3rd linear motion component are mutually perpendicular to two-by-two；
The fixed structure is slidably connected the first straight line moving link.
2. near field noise scanning tester according to claim 1, it is characterised in that described device is also included for driving
The first drive mechanism that the fixed structure slides on the first straight line moving link is moved, for driving the first straight line
The second drive mechanism that moving link slides on the second straight line moving link, and for driving the second straight line to transport
The 3rd drive mechanism that dynamic component slides on the described 3rd linear motion component.
3. near field noise scanning tester according to claim 2, it is characterised in that first drive mechanism, institute
Stating the second drive mechanism and the 3rd drive mechanism includes respectively motor.
4. near field noise scanning tester according to claim 2, it is characterised in that the first straight line motion structure
Part, the second straight line moving link and the 3rd linear motion component are at least ball screw framework or rack-and-pinion cooperation
One kind in structure or chain drive structure.
5. the near field noise scanning tester according to claim 1-4 any one, it is characterised in that described device is also
Including the first slide block, the first straight line moving link includes the first slide rail, and the fixed structure is slided by first slide block
It is dynamic to connect first slide rail；
The second straight line moving link includes the second slide rail, and described device also includes being arranged on first slide rail with described the
The second slide block between two slide rails；First slide rail is slidably connected second slide rail by second slide block；
The 3rd linear motion component includes the 3rd slide rail, and described device also includes being arranged on second slide rail with described the
The 3rd slide block between three slide rails；Second slide rail is slidably connected the 3rd slide rail by the 3rd slide block.
6. near field noise scanning tester according to claim 5, it is characterised in that first slide rail detachably connects
Second slide block is connect, second slide rail is detachably connected the 3rd slide block.
7. the near field noise scanning tester according to claim 1-4 any one, it is characterised in that the fixed knot
Structure includes clamping structure, and the clamping structure is used to clamp the velocity of sound probe.
8. near field noise scanning tester according to claim 7, it is characterised in that the clamping structure and the sound
The part of fast probe contacts is the structure that sound-absorbing material is constituted.
9. the near field noise scanning tester according to claim 1-4 any one, it is characterised in that described device is also
Including displacement transducer, the installation site of institute's displacement sensors is corresponding with the installation site that the velocity of sound is popped one's head in；Preferably,
Institute's displacement sensors are installed on first slide block.
10. the near field noise scanning tester according to claim 1-4 any one, it is characterised in that the base
It is provided with the movable pulley for moving for the base and the locking mechanism for locking the movable pulley；Preferably, described
Three linear motion components are removably mounted on the base.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611238573.3A CN106644054B (en) | 2016-12-28 | 2016-12-28 | Near field noise scanning testing device |
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|---|---|---|---|
| CN201611238573.3A CN106644054B (en) | 2016-12-28 | 2016-12-28 | Near field noise scanning testing device |
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| CN106644054B CN106644054B (en) | 2023-12-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107589317A (en) * | 2017-11-03 | 2018-01-16 | 南方电网科学研究院有限责任公司 | Surface charge measurement probe moving device and surface charge testing method |
| CN108020316A (en) * | 2017-11-03 | 2018-05-11 | 天威保变(合肥)变压器有限公司 | A kind of sound level test measurement device |
| CN108917919A (en) * | 2018-07-23 | 2018-11-30 | 珠海格力电器股份有限公司 | Vibration testing system and vibration testing method |
| CN110160623A (en) * | 2018-04-24 | 2019-08-23 | 北京机电工程研究所 | Hanging and measurement combined system |
| CN111948292A (en) * | 2020-06-29 | 2020-11-17 | 中国科学院深圳先进技术研究院 | Scanning device |
| CN113418722A (en) * | 2021-06-30 | 2021-09-21 | 一汽奔腾轿车有限公司 | Automobile sliding door opening and closing speed test rack and test method |
| CN115219014A (en) * | 2022-07-12 | 2022-10-21 | 国网安徽省电力有限公司马鞍山供电公司 | Power transformer with noise monitoring mechanism |
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