CN104132728A - Device of resisting electromagnetic-field interferences for noise meter and use method thereof - Google Patents
Device of resisting electromagnetic-field interferences for noise meter and use method thereof Download PDFInfo
- Publication number
- CN104132728A CN104132728A CN201410298489.5A CN201410298489A CN104132728A CN 104132728 A CN104132728 A CN 104132728A CN 201410298489 A CN201410298489 A CN 201410298489A CN 104132728 A CN104132728 A CN 104132728A
- Authority
- CN
- China
- Prior art keywords
- noise meter
- noise
- electromagnetic field
- interference
- windproof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a device of resisting electromagnetic-field interferences for a noise meter and a use method thereof. The method includes the following steps: manufacturing a noise meter windproof net cover (1) and a noise meter protective cage (2), which are made of brass wires; placing a noise meter body (3), which is to resist electromagnetic-field interferences, into the noise meter protective cage (2) and inserting a noise meter probe (4) into the noise meter windproof net cover (1); connecting the noise meter protective cage (2) and the noise meter windproof net cover (1) with a grounding wire (8) and connecting the grounding wire (8) with a grounding rod (9); and inserting the grounding rod (9) into the ground. The device and the use method thereof have the advantages of being 1) capable of reducing interferences which come from an external electromagnetic field and to which electronic elements in the noise meter are subjected so that accuracy of a noise test result is guaranteed; 2) avoiding damages on components in the noise meter, caused by action of a strong external electromagnetic field; 3) reasonable in design and low in investment.
Description
Technical field
The present invention relates to a kind of noise meter interference preventer, especially relate to the anti-interference of electromagnetic field device of a kind of noise meter, the invention still further relates to the using method of this device.
Background technology
In recent years, along with the development that (directly) stream technology of transmission of electricity is handed over by China, high pressure, extra-high voltage hand over (directly) stream project of transmitting and converting electricity construction speed to accelerate, and its noise effects also causes social extensive concern day by day.In to transformer station, current conversion station and friendship (directly) stream transmission line of electricity noise measurement process, need support the use noise meter, to collect, to process the noise source data that gathered.Although existing noise meter uses no problem under the low condition of electromagnetic environment background value, but it is under strong-electromagnetic field environmental baseline, and the noise testing of noise meter is interfered, and accuracy obviously reduces, under serious condition, can damage the function of noise meter, and then cause measurement result distortion.
Summary of the invention
First technical matters to be solved by this invention is to provide and a kind ofly can effectively prevents that noise meter is subject to the interference of external electromagnetic field, ensure the Measurement accuracy to noise sources such as AC Substation, current conversion station and friendship (directly) stream transmission lines of electricity under strong electromagnetic condition, avoid causing the internal electronic element short circuit of noise meter and the anti-interference of electromagnetic field device of the noise meter of damage because strong-electromagnetic field disturbs simultaneously.
Second technical matters to be solved by this invention is to provide a kind of using method of this device.
In order to solve above-mentioned first technical matters, the anti-interference of electromagnetic field device of noise meter provided by the invention, comprise the windproof net cover of noise meter and a noise meter protection cage that adopts brass wire to make that adopts brass to make, the windproof ball of noise meter that the windproof net cover of described noise meter can cover noise meter body; At least one vertical wire side of described noise meter protection cage can open and close, and the volume size of described noise meter protection cage is to hold the noise meter body for the treatment of the anti-interference of electromagnetic field the space of leaving manual operation noise meter body; Described noise meter protection cage is all connected with ground wire with the described windproof net cover of noise meter, and described ground wire is connected with ground rod.
The mesh of described noise meter protection cage is shaped as square, and mesh size is 10 ㎜～20 ㎜.
The mesh shape of the windproof net cover of described noise meter adopts 20 hexagons and 12 pentagons, and mesh size can allow the noise meter probe for the treatment of the anti-interference of electromagnetic field to pass through.
Described noise meter protection cage is arranged on a support, convenient operation.
Described noise meter protection cage adopts buckle to be connected with described support, is convenient to take off noise meter protection cage, is conducive to transport, the keeping of operation.
Described support is extension type tripod, can adapt to differing heights, easy to operate.
The bottom of described extension type tripod is provided with universal wheel, is convenient to mobile the present invention, thereby easy to operate.
Described universal wheel is the universal wheel of locking function, more convenient to operate.
In order to solve above-mentioned the second technical matters, the method for the anti-interference of electromagnetic field device of use noise meter provided by the invention, comprises the steps:
(1), the noise meter body for the treatment of the anti-interference of electromagnetic field is inserted in noise meter protection cage, noise meter probe inserts the windproof ball of noise meter, by the windproof noise meter net enclosure on the windproof ball of noise meter;
(2), windproof noise meter net cover and noise meter protection cage is all connected to ground wire, ground wire connects ground rod, and ground rod is inserted to ground.
In above-mentioned steps (), first open support, noise meter is protected to the protection cage buckle of cage and the support buckle snapping of support is good, again the noise meter body for the treatment of the anti-interference of electromagnetic field is inserted in noise meter protection cage, noise meter probe inserts the windproof ball of noise meter, by the windproof noise meter net enclosure on the windproof ball of noise meter.
Adopt the anti-interference of electromagnetic field device of noise meter and the using method thereof of technique scheme, the diameter of metal brass wire is 1 ㎜～2 ㎜, the mesh diameter of the windproof net cover of noise meter is 13 ㎜～14 ㎜, the windproof ball size of noise meter windproof net cover diameter and noise meter matches, and diameter is 90 ㎜～95 ㎜, and ground wire is made up of multiply stone dead wire, overall diameter size is 3 ㎜～5 ㎜, ground rod adopts copper rod, long 240 ㎜～300 ㎜, and diameter is 15 ㎜～20 ㎜.Its principle of work is: noise meter belongs to exact instrument, and its fundamental diagram can be equivalent to the circuit diagram of a capacitor, must take effective anti-external interference measure, the authenticity of guarantee test result and accuracy.In the strong-electromagnetic field environment such as transformer station, current conversion station, high pressure AC and DC circuit, due to the existence of external electromagnetic field, make the noise meter stored charge in above-mentioned electromagnetic field environment of living in, if the electric charge of accumulation can not effectively be eliminated, in the time of human body contact instrument, can produce electric discharge, discharge generation noise, can affect noise testing result.Strong-electromagnetic field disturbs the task performance that can affect noise meter simultaneously, also likely damages instrument when serious.Adopting metallic shield net is noise meter protection cage and the windproof net cover protection of noise meter noise meter; allow induced charge be accumulated in metallic shield online; and by the mode of ground connection, eliminate in time the electric charge on gauze screen, reach the object that protection noise meter is avoided the interference of electromagnetic field.
The invention has the beneficial effects as follows:
1), can reduce noise meter internal electronic element and be subject to the interference of external electromagnetic field, ensure the accuracy of noise testing result;
2), can avoid extraneous strong-electromagnetic field effect and cause the damage of noise meter internal component;
3), reasonable in design, small investment.
In sum, the present invention a kind ofly can effectively prevent that noise meter is subject to the interference of external electromagnetic field, ensure the Measurement accuracy to noise sources such as AC Substation, current conversion station and friendship (directly) stream transmission lines of electricity under strong electromagnetic condition, avoid causing the internal electronic element short circuit of noise meter and the anti-interference of electromagnetic field device of the noise meter of damage because strong-electromagnetic field disturbs simultaneously.Be applicable to the measurement of the noise source under the strong-electromagnetic field environmental baselines such as AC Substation, friendship (directly) stream transmission line of electricity, current conversion station, connecting under ground wire condition, the power frequency electric field of noise meter environment of living in can be reduced to original 5%～8.5%, power frequency magnetic field is reduced to 10% original left and right, and shield effectiveness is better.The using method simple possible of this device.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of the windproof net cover of noise meter of the present invention.
Fig. 3 is the structural representation of noise meter protection cage of the present invention.
Fig. 4 is the structural representation of noise meter body.
In figure, be denoted as: the windproof net cover of 1-noise meter, 2-noise meter protection cage, 3-noise meter body, 4-noise meter probe, 5-protection cage buckle, 6-extension type tripod, 7-support buckle, 8-ground wire, 9-ground rod, the universal wheel of 10-locking function.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1:
Referring to Fig. 4, the present embodiment noise used is counted the general noise meter that Hangzhou Aihua Instrument Co., Ltd. produces, and this noise meter body is rectangular, long 290mm, wide 90mm, high 38mm.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, adopting diameter is the windproof net cover 1 of noise meter and the noise meter protection cage 2 that employing diameter is 1 ㎜ brass wire making of the brass wire making of 1 ㎜, the mesh shape of the windproof net cover 1 of noise meter adopts 20 hexagons and 12 pentagons, mesh size is mated with the size of the noise meter probe 4 for the treatment of the anti-interference of electromagnetic field, be that mesh size can allow the noise meter probe 4 for the treatment of the anti-interference of electromagnetic field to pass through, mesh diameter is 13 ㎜, the windproof ball of noise meter that the windproof net cover 1 of noise meter can cover noise meter body 3, the diameter of the windproof net cover 1 of noise meter is 90 ㎜, the profile of noise meter protection cage 2 is rectangular parallelepiped, long 400mm, wide 200mm, high 200mm, the mesh of noise meter protection cage 2 is shaped as square, mesh size is 20 ㎜, the size of noise meter protection cage 2 is mated with the size of the noise meter body 3 for the treatment of the anti-interference of electromagnetic field, the volume size that is noise meter protection cage 2 is to hold the space for the treatment of the noise meter body 3 of the anti-interference of electromagnetic field and leaving manual operation noise meter body 3,4 vertical wire sides of noise meter protection cage 2 all can open and close, and are convenient to the installation of acoustic meter and fix, noise meter protection cage 2 is all connected with ground wire 8 with the windproof net cover 1 of noise meter, and ground wire 8 is connected with ground rod 9, ground wire 8 is made up of multiply stone dead wire, and overall diameter size is 3 ㎜, and ground rod 9 adopts copper rod, long 240 ㎜, and diameter is 15 ㎜.
As a modification of the present invention, noise meter protection cage 2 is arranged on a support, preferably, support is extension type tripod 6, extension type tripod 6 collapsing length maximums reach 1.8m, the bottom of extension type tripod 6 is provided with the universal wheel 10 of locking function, and noise meter protection cage 2 adopts buckle to be connected with extension type tripod 6, i.e. the protection cage buckle 5 of noise meter protection cage 2 and support buckle 7 snappings of extension type tripod 6.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, using method of the present invention is:
(1), open extension type tripod 6, the protection cage buckle 5 that noise meter is protected to cage 2 is good with support buckle 7 snappings of extension type tripod 6, the noise meter body 3 for the treatment of the anti-interference of electromagnetic field is inserted in noise meter protection cage 2, noise meter probe 4 inserts the windproof ball of noise meter, and windproof noise meter net cover 1 is enclosed within on the windproof ball of noise meter;
(2), windproof noise meter net cover 1 and noise meter protection cage 2 is connected to ground wire 8, ground wire 8 connects ground rod 9, and ground rod 9 is inserted to ground.
Embodiment 2:
Referring to Fig. 4, the present embodiment noise used is counted the BSWA801 type sound meter that Beijing Sheng Wang Acoustic-Electric (BSWA) Technology Co., Ltd. produces, and this noise meter body is rectangular, long 338mm, wide 82mm, high 42mm.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, adopting diameter is that the windproof net cover 1 of noise meter and the employing diameter that 2 ㎜ brass wires are made is the noise meter protection cage 2 that 2 ㎜ brass wires are made, the mesh shape of the windproof net cover 1 of noise meter adopts hexagon, mesh size is mated with the size of the noise meter probe 4 for the treatment of the anti-interference of electromagnetic field, be that mesh size can allow the noise meter probe 4 for the treatment of the anti-interference of electromagnetic field to pass through, mesh diameter is 14 ㎜, the windproof ball of noise meter that the windproof net cover 1 of noise meter can cover noise meter body 3, the diameter of the windproof net cover 1 of noise meter is 95 ㎜; The profile of noise meter protection cage 2 is rectangular parallelepiped, long 400mm, wide 200mm, high 200mm, the mesh of noise meter protection cage 2 is shaped as square, mesh size is 10 ㎜, the size of noise meter protection cage 2 is mated with the size of the noise meter body 3 for the treatment of the anti-interference of electromagnetic field, the volume size that is noise meter protection cage 2 is to hold the space for the treatment of the noise meter body 3 of the anti-interference of electromagnetic field and leaving manual operation noise meter body 3,4 vertical wire sides of noise meter protection cage 2 all can open and close, and are convenient to the installation of acoustic meter and fix; Noise meter protection cage 2 is all connected with ground wire 8 with the windproof net cover 1 of noise meter, and ground wire 8 is connected with ground rod 9.Ground wire 8 is made up of multiply stone dead wire, and overall diameter size is 5 ㎜, and ground rod 9 adopts copper rod, long 300 ㎜, and diameter is 20 ㎜.
As a modification of the present invention, noise meter protection cage 2 is arranged on a support, preferably, support is extension type tripod 6, extension type tripod 6 collapsing length maximums reach 1.8m, noise meter protection cage 2 adopts buckle to be connected with extension type tripod 6, i.e. the protection cage buckle 5 of noise meter protection cage 2 and support buckle 7 snappings of extension type tripod 6.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, using method of the present invention is:
(1), open extension type tripod 6, the protection cage buckle 5 that noise meter is protected to cage 2 is good with support buckle 7 snappings of extension type tripod 6, the noise meter body 3 for the treatment of the anti-interference of electromagnetic field is inserted in noise meter protection cage 2, noise meter probe 4 inserts the windproof ball of noise meter, and windproof noise meter net cover 1 is enclosed within on the windproof ball of noise meter;
(2), windproof noise meter net cover 1 and noise meter protection cage 2 is connected to ground wire 8, ground wire 8 connects ground rod 9, and ground rod 9 is inserted to ground.
Claims (10)
1. the anti-interference of electromagnetic field device of noise meter, it is characterized in that: comprise the windproof net cover of noise meter (1) and a noise meter protection cage (2) that adopts brass to make that adopts brass wire to make, the windproof net cover of described noise meter (1) can cover the windproof ball of noise meter of noise meter body; At least one vertical wire side of described noise meter protection cage (2) can open and close, and the volume size of described noise meter protection cage (2) is to hold the noise meter body for the treatment of the anti-interference of electromagnetic field the space of leaving manual operation noise meter body; Described noise meter protection cage (2) is all connected with ground wire (8) with the described windproof net cover of noise meter (1), and described ground wire (8) is connected with ground rod (9).
2. the anti-interference of electromagnetic field device of noise meter according to claim 1, is characterized in that: the mesh of described noise meter protection cage (2) is shaped as square, and mesh size is 10 ㎜～20 ㎜.
3. the anti-interference of electromagnetic field device of noise meter according to claim 1 and 2, it is characterized in that: the mesh shape of the windproof net cover of described noise meter (1) adopts 20 hexagons and 12 pentagons, mesh size can allow the noise meter probe (4) for the treatment of the anti-interference of electromagnetic field to pass through.
4. the anti-interference of electromagnetic field device of noise meter according to claim 1 and 2, is characterized in that: described noise meter protection cage (2) is arranged on a support.
5. the anti-interference of electromagnetic field device of noise meter according to claim 4, is characterized in that: described noise meter protection cage (2) adopts buckle to be connected with described support.
6. the anti-interference of electromagnetic field device of noise meter according to claim 4, is characterized in that: described support is extension type tripod.
7. the anti-interference of electromagnetic field device of noise meter according to claim 4, is characterized in that: the bottom of described extension type tripod is provided with universal wheel.
8. the anti-interference of electromagnetic field device of noise meter according to claim 4, is characterized in that: described universal wheel is the universal wheel (10) of locking function.
9. right to use requires the method for the anti-interference of electromagnetic field device of noise meter described in 1, it is characterized in that: comprise the steps:
(1), the noise meter body (3) for the treatment of the anti-interference of electromagnetic field is inserted in noise meter protection cage (2), noise meter probe (4) inserts the windproof ball of noise meter, and windproof noise meter net cover (1) is enclosed within on the windproof ball of noise meter;
(2), windproof noise meter net cover (1) is all connected to ground wire (8) with noise meter protection cage (2), ground wire (8) connects ground rod (9), and ground rod (9) is inserted to ground.
10. the method for the anti-interference of electromagnetic field device of use noise meter according to claim 9, it is characterized in that: in above-mentioned steps (), first open support, noise meter is protected to the protection cage buckle (5) of cage (2) and support buckle (7) snapping of support is good, again the noise meter body (3) for the treatment of the anti-interference of electromagnetic field is inserted in noise meter protection cage (2), noise meter probe (4) inserts the windproof ball of noise meter, and windproof noise meter net cover (1) is enclosed within on the windproof ball of noise meter.
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 true CN104132728A (en) | 2014-11-05 |
| CN104132728B CN104132728B (en) | 2016-10-19 |
Family
ID=51805499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410298489.5A Active CN104132728B (en) | 2014-06-26 | 2014-06-26 | Noise meter anti-interference of electromagnetic field device and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104132728B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| KR101339909B1 (en) * | 2012-04-30 | 2013-12-10 | 전자부품연구원 | Microphone package |
| 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 |
-
2014
- 2014-06-26 CN CN201410298489.5A patent/CN104132728B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104132728B (en) | 2016-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202994964U (en) | UHF partial discharge sensor capable of closely cooperating with GIS basin-type insulator | |
| CN204256114U (en) | GIS partial discharge detects with wireless superfrequency sensor | |
| CN203949723U (en) | The anti-interference of electromagnetic field device of noise meter | |
| CN204666772U (en) | A kind of shelf depreciation In-circiut tester | |
| CN202075374U (en) | Sleeve end shield discharging ultrasonic detection device | |
| CN103499735A (en) | Device for collecting high-potential corona current | |
| CN113253072A (en) | Mobile acoustic-optic-electromagnetic composite sensor for high-voltage switch cabinet | |
| CN202383243U (en) | Partial discharge detection input structure for suppressing interference of square wave excitation source | |
| CN104132728A (en) | Device of resisting electromagnetic-field interferences for noise meter and use method thereof | |
| CN204649905U (en) | Based on the superfrequency sensor of metal disc insulator perforate | |
| CN204349065U (en) | Comprise the device of EMC and waterproof construction | |
| CN204256113U (en) | Partial discharge pulse's detection system | |
| CN104898030A (en) | Extra-high voltage transformer station ultrahigh frequency partial discharge anti-electromagnetic interference testing method and mobile platform | |
| CN205608140U (en) | Inside high -pressure conductor of GIS circular arc sensor for partial discharge detector | |
| CN202678953U (en) | Surge protector capable of recording lightning stroke current strength and occurrence time | |
| CN203908630U (en) | Nucleon level gage detector | |
| CN203376437U (en) | A noise interference shielding case for a cable fault locating instrument | |
| CN203606502U (en) | Multifunctional land-based piezoelectric detector | |
| CN201479537U (en) | Electromagnetic shielding case | |
| CN204065024U (en) | A kind of radome of post insulator vibration acoustic pick-up unit | |
| CN204086469U (en) | A kind of online detector for partial discharge | |
| CN203025220U (en) | Electrical zero-electric and zero-magnetic interference detection device | |
| CN202009243U (en) | Anti-electromagnetic interference equipment power supply system | |
| CN203310512U (en) | Noise detection device of electric power apparatus | |
| CN203811760U (en) | Partial discharge source positioning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |