CN104132728B - Noise meter anti-interference of electromagnetic field device and using method thereof - Google Patents
Noise meter anti-interference of electromagnetic field device and using method thereof Download PDFInfo
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- CN104132728B CN104132728B CN201410298489.5A CN201410298489A CN104132728B CN 104132728 B CN104132728 B CN 104132728B CN 201410298489 A CN201410298489 A CN 201410298489A CN 104132728 B CN104132728 B CN 104132728B
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- noise meter
- electromagnetic field
- noise
- interference
- radix saposhnikoviae
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- 230000005672 electromagnetic field Effects 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000523 sample Substances 0.000 claims abstract description 13
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 8
- 239000010951 brass Substances 0.000 claims abstract description 8
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052683 pyrite Inorganic materials 0.000 claims description 2
- 239000011028 pyrite Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 2
- 230000005669 field effect Effects 0.000 abstract description 2
- 239000002689 soil Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Elimination Of Static Electricity (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of noise meter anti-interference of electromagnetic field device and using method thereof, make noise meter Radix Saposhnikoviae net cover (1) being made up of brass wire and noise meter protection cage (2)；Being inserted by the noise meter body (3) treating the anti-interference of electromagnetic field in noise meter protection cage (2), noise meter probe (4) inserts in noise meter Radix Saposhnikoviae net cover (1)；Noise meter protecting cage (2) and noise meter Radix Saposhnikoviae net cover (1) connects earth lead (8), earth lead (8) connects earth rod (9), and earth rod (9) is inserted soil.The present invention: 1) noise meter internal electronic element can be reduced disturbed by external electromagnetic field, it is ensured that the accuracy of noise testing result；2) extraneous strong-electromagnetic field effect can be avoided to cause the damage of noise meter internal component；3) reasonable in design, small investment.
Description
Technical field
The present invention relates to a kind of noise meter interference preventer, especially relate to a kind of noise
Count anti-interference of electromagnetic field device, the invention still further relates to the using method of this device.
Background technology
In recent years, along with the development of (directly) stream technology of transmission of electricity, high pressure, spy hand in China
High pressure hands over (directly) stream project of transmitting and converting electricity construction speed to accelerate, and its noise effects is also
Day by day cause society's extensive concern.Transformer station, current conversion station and friendship (directly) are being flowed defeated
During electric line noise measurement, noise meter need to be supported the use, to collect, to process institute
The noise source data gathered.Although existing noise meter is at the low bar of electromagnetic environment background value
Use no problem under part, but it is under strong-electromagnetic field environmental condition, making an uproar of noise meter
Sound test is interfered, and accuracy substantially reduces, and can damage noise meter under serious condition
Function, and then cause measurement result distortion.
Summary of the invention
First technical problem to be solved by this invention is to provide one and can effectively prevent
Noise meter is disturbed by external electromagnetic field, it is ensured that to exchange power transformation under the conditions of strong electromagnetic
Stand, current conversion station and hand over accurately measuring, simultaneously of (directly) stream noise sources such as transmission line of electricity
Avoid because strong-electromagnetic field interference causes internal electronic element short circuit and the damage of noise meter
Noise meter anti-interference of electromagnetic field device.
Second technical problem to be solved by this invention is to provide making of this device a kind of
Use method.
In order to solve above-mentioned first technical problem, the noise meter that the present invention provides is anti-electric
Magnetic interference device, including one use pyrite make noise meter Radix Saposhnikoviae net cover and
The noise meter protection cage that one uses brass wire to make, described noise meter Radix Saposhnikoviae net
Cover can cover the noise meter Radix Saposhnikoviae ball of noise meter body；Described noise meter protection cage
At least one vertical wire side can open and close, the volume of described noise meter protection cage
Size is the noise meter body that can accommodate and treat the anti-interference of electromagnetic field and leaves manual operation and make an uproar
The space of sound meter body；Described noise meter protection cage and described noise meter Radix Saposhnikoviae ball
Guard is all connected with earth lead, and described earth lead connects earth rod.
The mesh form of described noise meter protection cage is square, and mesh size is 10
～20.
The mesh form of described noise meter Radix Saposhnikoviae net cover use 20 hexagons and
12 pentagons, mesh size can allow the noise meter probe treating the anti-interference of electromagnetic field logical
Cross.
Described noise meter protection cage is arranged on a support, it is simple to operation.
Described noise meter protection cage uses with described support and snaps connection, it is simple to take
Lower noise meter protection cage, is conducive to the transport of operation, keeping.
Described support is extension type tripod, adapts to differing heights, operation side
Just.
The bottom of described extension type tripod is provided with universal wheel, it is simple to move this
Invention, thus easy to operate.
Described universal wheel is the universal wheel of locking function, more convenient to operate.
In order to solve above-mentioned second technical problem, the use noise meter that the present invention provides is prevented
The method of interference of electromagnetic field device, comprises the steps:
(1), the noise meter body treating the anti-interference of electromagnetic field is inserted noise meter protection cage
In, noise meter probe inserts noise meter Radix Saposhnikoviae ball, is existed by the noise meter Radix Saposhnikoviae net enclosure
On noise meter Radix Saposhnikoviae ball；
(2), noise meter Radix Saposhnikoviae net cover and noise meter are protected cage and be all connected with ground connection
Line, earth lead connects earth rod, earth rod is inserted ground.
In above-mentioned steps (), first open support, noise meter is protected the protection cage of cage
Buckle is good with the support buckle snapping of support, then will treat the noise meter of the anti-interference of electromagnetic field
Body is inserted in noise meter protection cage, and noise meter probe inserts noise meter Radix Saposhnikoviae ball, will
The noise meter Radix Saposhnikoviae net enclosure is on noise meter Radix Saposhnikoviae ball.
Use noise meter anti-interference of electromagnetic field device and the user thereof of technique scheme
Method, a diameter of the 1～2 of metal brass wire, the mesh of noise meter Radix Saposhnikoviae net cover
A diameter of 13～14, noise meter Radix Saposhnikoviae net cover diameter is big with noise meter Radix Saposhnikoviae ball
Little matching, a diameter of 90～95, earth lead is made up of multiply stone dead wire, always
Body diameter is 3～5, earth rod employing copper rod, long 240～300,
A diameter of 15～20.Its operation principle is: noise meter belongs to precision instrument, its work
Make schematic diagram and can be equivalent to the circuit diagram of a capacitor, it is necessary to take effective anti-
External interference measure, the verity of guarantee test result and accuracy.In power transformation
Stand, in the strong-electromagnetic field environment such as current conversion station, high pressure AC and DC circuit, due to space
The existence of electromagnetic field, makes the noise meter stored charge in residing above-mentioned electromagnetic field environment,
If the electric charge of accumulation can not effectively eliminate, when human contact's instrument, electric discharge can be produced,
Electric discharge produces noise, can affect noise testing result.Strong-electromagnetic field interference simultaneously can shadow
Ring the task performance of noise meter, it is also possible to damage instrument time serious.Use metal screen
Cover net i.e. noise meter protection cage and noise meter Radix Saposhnikoviae net cover protection noise meter, allow sensing
Charge accumulated is online in metallic shield, and by the way of ground connection, eliminates shielding in time
Online electric charge, reaches the purpose protecting noise meter from the interference of electromagnetic field.
The invention has the beneficial effects as follows:
1), noise meter internal electronic element can be reduced disturbed by external electromagnetic field, protect
The accuracy of card noise testing result；
2) extraneous strong-electromagnetic field effect, can be avoided to cause noise meter internal component
Damage；
3), reasonable in design, small investment.
In sum, the present invention is that one can effectively prevent noise meter by external electromagnetic field
Interference, it is ensured that under the conditions of strong electromagnetic to AC Substation, current conversion station and hand over (directly)
The accurate measurement of the noise sources such as stream transmission line of electricity, avoids because strong-electromagnetic field interference is led simultaneously
The internal electronic element short circuit causing noise meter and the noise meter anti-interference of electromagnetic field dress damaged
Put.It is applicable to AC Substation, hands over (directly) stream forceful electric power such as transmission line of electricity, current conversion station
The measurement of the noise source under the conditions of magnetic field environment, is connecting under the conditions of earth lead, can be by
The power frequency electric field of noise meter local environment is reduced to original 5%～8.5%, by power frequency magnetic
Field is reduced to original about 10%, and shield effectiveness is preferable.The using method letter of this device
Single feasible.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of the noise meter Radix Saposhnikoviae net cover of the present invention.
Fig. 3 is the structural representation of the noise meter protection cage of the present invention.
Fig. 4 is the structural representation of noise meter body.
Figure is denoted as: 1-noise meter Radix Saposhnikoviae net cover, 2-noise meter protection cage, 3-
Noise meter body, 4-noise meter probe, 5-protects cage buckle, 6-extension type triangle
Frame, 7-support buckle, 8-earth lead, 9-earth rod, 10-locking function universal
Wheel.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1:
Seeing Fig. 4, it is raw that noise used by the present embodiment is calculated as Hangzhou Aihua Instrument Co., Ltd.
The general noise meter produced, this noise meter body is rectangular, long 290mm, wide 90mm,
High 38mm.
See Fig. 1, Fig. 2, Fig. 3 and Fig. 4, use a diameter of brass wire system of 1
Make noise meter Radix Saposhnikoviae net cover 1 and one use a diameter of 1 brass wire make
Noise meter protection cage 2, the mesh form of noise meter Radix Saposhnikoviae net cover 1 uses 20 six
Limit shape and 12 pentagons, mesh size and the noise meter treating the anti-interference of electromagnetic field are popped one's head in
The size coupling of 4, i.e. mesh size can allow to treat the noise meter probe of the anti-interference of electromagnetic field
4 pass through, and mesh diameter is 13, and noise meter Radix Saposhnikoviae net cover 1 can cover noise meter
The noise meter Radix Saposhnikoviae ball of body 3, a diameter of the 90 of noise meter Radix Saposhnikoviae net cover 1；
The profile of noise meter protection cage 2 is cuboid, long 400mm, wide 200mm, high 200mm,
The mesh form of noise meter protection cage 2 is square, and mesh size is 20, noise
The size of meter protection cage 2 and the size of the noise meter body 3 treating the anti-interference of electromagnetic field
Joining, i.e. the volume size of noise meter protection cage 2 is to accommodate to treat the anti-interference of electromagnetic field
Noise meter body 3 also leaves the space of manual operation noise meter body 3, and noise meter is prevented
4 the vertical wire sides protecting cage 2 all can open and close, it is simple to the installation of acoustic meter and
Fixing；Noise meter protection cage 2 and noise meter Radix Saposhnikoviae net cover 1 are all with earth lead 8 even
Connecing, earth lead 8 connects earth rod 9；Earth lead 8 is made up of multiply stone dead wire, always
Body diameter is 3, and earth rod 9 uses copper rod, length 240, a diameter of 15
㎜。
As a modification of the present invention, noise meter protection cage 2 is arranged on a support
On, it is preferable that support is extension type tripod 6, and extension type tripod 6 stretches
Length maximum reaches 1.8m, and the bottom of extension type tripod 6 is provided with latch functions
Universal wheel 10, noise meter protection cage 2 uses buckle even with extension type tripod 6
Connect, i.e. noise meter protects protection cage buckle 5 and the extension type tripod 6 of cage 2
Support buckle 7 snapping.
Seeing Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the using method of the present invention is:
(1), open extension type tripod 6, noise meter is protected the protection of cage 2
Cage buckle 5 is good with support buckle 7 snapping of extension type tripod 6, will treat anti-electric
The noise meter body 3 of magnetic interference is inserted in noise meter protection cage 2, noise meter probe 4
Insert noise meter Radix Saposhnikoviae ball, noise meter Radix Saposhnikoviae net cover 1 is enclosed within noise meter Radix Saposhnikoviae ball
On；
(2), noise meter Radix Saposhnikoviae net cover 1 and noise meter are protected cage 2 and connect ground connection
Line 8, earth lead 8 connects earth rod 9, and earth rod 9 is inserted ground.
Embodiment 2:
Seeing Fig. 4, noise used by the present embodiment is calculated as Beijing popularity limited public affairs of acoustic-electric technology
The BSWA801 type sound meter that department produces, this noise meter body is rectangular, long 338mm,
Wide 82mm, high 42mm.
See Fig. 1, Fig. 2, Fig. 3 and Fig. 4, use a diameter of 2 brass wires to make
Noise meter Radix Saposhnikoviae net cover 1 and one use a diameter of 2 brass wires make make an uproar
Sound meter protection cage 2, the mesh form of noise meter Radix Saposhnikoviae net cover 1 uses hexagon, net
Hole size mates with the size of the noise meter probe 4 treating the anti-interference of electromagnetic field, i.e. mesh
Size can allow the noise meter probe 4 treating the anti-interference of electromagnetic field to pass through, and mesh diameter is
14, noise meter Radix Saposhnikoviae net cover 1 can cover the noise meter Radix Saposhnikoviae of noise meter body 3
Ball, a diameter of the 95 of noise meter Radix Saposhnikoviae net cover 1；Outside noise meter protection cage 2
Shape is cuboid, long 400mm, wide 200mm, high 200mm, noise meter protection cage 2
Mesh form be square, mesh size is 10, noise meter protection cage 2 big
Little and the noise meter body 3 treating the anti-interference of electromagnetic field size is mated, i.e. noise meter is prevented
Protect the volume size of cage 2 be the noise meter body 3 that can accommodate and treat the anti-interference of electromagnetic field also
Leaving the space of manual operation noise meter body 3,4 of noise meter protection cage 2 hang down
Straight wire side all can open and close, it is simple to the installation of acoustic meter and fixing；Noise meter is prevented
Protecting cage 2 and noise meter Radix Saposhnikoviae net cover 1 is all connected with earth lead 8, earth lead 8 is even
It is connected to earth rod 9.Earth lead 8 is made up of multiply stone dead wire, and overall diameter size is 5
, earth rod 9 uses copper rod, length 300, a diameter of 20.
As a modification of the present invention, noise meter protection cage 2 is arranged on a support
On, it is preferable that support is extension type tripod 6, and extension type tripod 6 stretches
Length maximum reaches 1.8m, and noise meter protection cage 2 uses card with extension type tripod 6
Button connects, i.e. noise meter protects protection cage buckle 5 and the extension type tripod 6 of cage 2
Support buckle 7 snapping.
Seeing Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the using method of the present invention is:
(1), open extension type tripod 6, noise meter is protected the protection of cage 2
Cage buckle 5 is good with support buckle 7 snapping of extension type tripod 6, will treat anti-electric
The noise meter body 3 of magnetic interference is inserted in noise meter protection cage 2, noise meter probe 4
Insert noise meter Radix Saposhnikoviae ball, noise meter Radix Saposhnikoviae net cover 1 is enclosed within noise meter Radix Saposhnikoviae ball
On；
(2), noise meter Radix Saposhnikoviae net cover 1 and noise meter are protected cage 2 and connect ground connection
Line 8, earth lead 8 connects earth rod 9, and earth rod 9 is inserted ground.
Claims (10)
1. a noise meter anti-interference of electromagnetic field device, is characterized in that: include that one is adopted
Noise meter Radix Saposhnikoviae net cover (1) and one with brass wire making use pyrite to make
Noise meter protection cage (2), described noise meter Radix Saposhnikoviae net cover (1) can cover noise
The noise meter Radix Saposhnikoviae ball of meter body；At least one of described noise meter protection cage (2)
Vertical wire side can open and close, the volume size of described noise meter protection cage (2)
For the noise meter body treating the anti-interference of electromagnetic field can be accommodated and leaves manual operation noise meter
The space of body；Described noise meter protection cage (2) and described noise meter Radix Saposhnikoviae ball
Guard (1) is all connected with earth lead (8), and described earth lead (8) connects
Ground rod (9).
Noise meter the most according to claim 1 anti-interference of electromagnetic field device, it is special
Levy and be: the mesh form of described noise meter protection cage (2) is square, and mesh is big
Little is 10～20.
Noise meter the most according to claim 1 and 2 anti-interference of electromagnetic field device,
It is characterized in that: the mesh form of described noise meter Radix Saposhnikoviae net cover (1) uses 20
Individual hexagon and 12 pentagons, mesh size can allow to treat making an uproar of the anti-interference of electromagnetic field
Sound meter probe (4) passes through.
Noise meter the most according to claim 1 and 2 anti-interference of electromagnetic field device,
It is characterized in that: described noise meter protection cage (2) is arranged on a support.
Noise meter the most according to claim 4 anti-interference of electromagnetic field device, it is special
Levy and be: described noise meter protection cage (2) uses with described support and snaps connection.
Noise meter the most according to claim 4 anti-interference of electromagnetic field device, it is special
Levy and be: described support is extension type tripod.
Noise meter the most according to claim 6 anti-interference of electromagnetic field device, it is special
Levy and be: the bottom of described extension type tripod is provided with universal wheel.
Noise meter the most according to claim 7 anti-interference of electromagnetic field device, it is special
Levy and be: described universal wheel is the universal wheel (10) of locking function.
9. the method for use noise meter anti-interference of electromagnetic field device described in claim 5,
It is characterized in that: comprise the steps:
(1), the noise meter body (3) treating the anti-interference of electromagnetic field inserts noise meter prevent
Protecting in cage (2), noise meter probe (4) inserts noise meter Radix Saposhnikoviae ball, by noise meter
Radix Saposhnikoviae net cover (1) is enclosed within noise meter Radix Saposhnikoviae ball；
(2), noise meter Radix Saposhnikoviae net cover (1) and noise meter are protected cage (2) equal
Connecting earth lead (8), earth lead (8) connects earth rod (9), by earth rod (9)
Insert ground.
Use noise meter the most according to claim 9 anti-interference of electromagnetic field device
Method, it is characterized in that: in above-mentioned steps (), first open support, by noise meter
Protection cage buckle (5) of protection cage (2) is good with support buckle (7) snapping of support,
The noise meter body (3) treating the anti-interference of electromagnetic field is inserted noise meter protection cage (2) again
In, noise meter probe (4) inserts noise meter Radix Saposhnikoviae ball, by noise meter Radix Saposhnikoviae net cover
(1) it is enclosed within noise meter Radix Saposhnikoviae ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410298489.5A CN104132728B (en) | 2014-06-26 | 2014-06-26 | Noise meter anti-interference of electromagnetic field device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410298489.5A CN104132728B (en) | 2014-06-26 | 2014-06-26 | Noise meter anti-interference of electromagnetic field device and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104132728A CN104132728A (en) | 2014-11-05 |
| CN104132728B true CN104132728B (en) | 2016-10-19 |
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|---|---|---|---|
| CN201410298489.5A Active CN104132728B (en) | 2014-06-26 | 2014-06-26 | Noise meter anti-interference of electromagnetic field device and using method thereof |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101339909B1 (en) * | 2012-04-30 | 2013-12-10 | 전자부품연구원 | Microphone package |
| CN203025220U (en) * | 2012-12-13 | 2013-06-26 | 四川省电力公司眉山公司 | Electrical zero-electric and zero-magnetic interference detection device |
| CN203376437U (en) * | 2013-07-18 | 2014-01-01 | 国家电网公司 | A noise interference shielding case for a cable fault locating instrument |
| CN203949723U (en) * | 2014-06-26 | 2014-11-19 | 国家电网公司 | The anti-interference of electromagnetic field device of noise meter |
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