CN201666946U - Electric field calibrator - Google Patents
Electric field calibrator Download PDFInfo
- Publication number
- CN201666946U CN201666946U CN 200920227436 CN200920227436U CN201666946U CN 201666946 U CN201666946 U CN 201666946U CN 200920227436 CN200920227436 CN 200920227436 CN 200920227436 U CN200920227436 U CN 200920227436U CN 201666946 U CN201666946 U CN 201666946U
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- CN
- China
- Prior art keywords
- electromagnetic wave
- electric field
- transverse electromagnetic
- miniature
- field strength
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- 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.)
- Expired - Lifetime
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Abstract
The utility model provides an electric field calibrator used for calibrating a near-area field strength meter. The electric field calibrator is characterized by comprising a signal generating module and a miniature transverse electromagnetic wave cell, wherein the output end of the signal generating module is connected with a core plate of the miniature transverse electromagnetic wave cell, and the tail end of the core plate is connected with a load; the side of the miniature transverse electromagnetic wave cell is provided with a small pore; and a calibration probe placed in the miniature transverse electromagnetic wave cell is connected with the near-area field strength meter through the small pore. The electric field calibrator uses a high-frequency oscillator and the miniature transverse electromagnetic wave cell to generate a uniform electromagnetic field, the generated field strength is standard field strength that is accurately obtained in virtue of high frequency voltage and the distance between the core plate of the transverse electromagnetic wave cell and a bottom plate, and used for solving the field calibration of the near-area field strength meter and a field strength sensor in production and use processes. The electric field calibrator can calibrate the electric field in real time and is convenient for operation, especially suitable for calibration of near-area field strength meters and field strength sensors used in detecting and monitoring sites of electromagnetic environments in environment protection, hygiene and disease control and the like.
Description
Technical field
The utility model relates to the electromagnetic wave field, relates generally to the electric field correcting device.
Background technology
At present, aerial radiation pattern field method and standard-antenna method are adopted near region electrometer of field strength and field strength sensor calibration, calibration device therefor and facility are signal generator, power amplifier, antenna and shielded anechoic chamber, it involves great expense, calibration is complicated, loaded down with trivial details, calibrate required expense height, and be a kind of laboratory calibration steps, can not real time calibration.
The utility model content
The technical problems to be solved in the utility model is: a kind of electric field calibrating device is provided, can be to the electric field real time calibration, and easy to operate.
The utility model is to solve the problems of the technologies described above the technical scheme of being taked to be: a kind of electric field calibrating device, be used to calibrate the near region field intensity meter, and it is characterized in that: it comprises signal generating module and miniature transverse electromagnetic wave transmission cell; The output terminal of signal generating module and the central layer of miniature transverse electromagnetic wave transmission cell link, and the end of central layer is connected with load; The side of miniature transverse electromagnetic wave transmission cell has an aperture, places the calibration probe in the miniature transverse electromagnetic wave transmission cell to link by this aperture and near region field intensity meter.
Press such scheme, described signal generating module comprises high frequency oscillator, electric capacity, CPU, wave filter and follower; The two ends of high frequency oscillator connect behind the electric capacity ground connection more respectively; CPU drives the clock signal that high frequency oscillator produces standard, becomes sine wave signal through wave filter again; The output terminal and the follower of wave filter link, and the output terminal of follower is the output terminal of signal generating module, links with central layer.
Press such scheme, the scope of the clock signal that described high frequency oscillator produces is that 100kHz is to 10MHz.
Press such scheme, described miniature transverse electromagnetic wave transmission cell front portion is the four sides taper, and the rear portion is cube shaped, and the wherein cubical length of side is 8cm-15cm.Described central layer one end was positioned at the vertex of a cone of four sides awl, and whole central layer separated cube by 2: 1.
Press such scheme, the shell of described central layer and miniature transverse electromagnetic wave transmission cell all adopts the thick copper coin of 1mm.
Press such scheme, described load is 50 ohm.
Principle of work of the present utility model is: utilize high frequency oscillator and miniature TEM cell to produce Uniform Electromagnetic Field, the field intensity that produces is the standard field intensity, accurately obtain by HF voltage and TEM cell central layer and base plate spacing, in order to solve near region electrometer of field strength and the field strength sensor field-checking in production, use, guarantee its measurement accurately and reliably.
The beneficial effects of the utility model are: 1, no electromagnetic exposure, real time calibration; 2, easy to use, be suitable for producing, the verification of the near region field intensity in the use, be particularly suitable for the calibration that electromagnetic environments such as environmental protection, health and epidemic prevention detected and monitored on-the-spot employed near region electrometer of field strength and field strength sensor.
Description of drawings
Fig. 1 is the structural drawing of an embodiment of the utility model
Fig. 2 is the cut-open view of Fig. 1 right half part
Embodiment
Fig. 1 is the structural drawing of an embodiment of the utility model, and a kind of electric field calibrating device is used to calibrate the near region field intensity meter, it is characterized in that: it comprises signal generating module and miniature transverse electromagnetic wave transmission cell; The output terminal of signal generating module and the central layer of miniature transverse electromagnetic wave transmission cell link, and the end of central layer is connected with load; The side of miniature transverse electromagnetic wave transmission cell has an aperture, places the calibration probe in the miniature transverse electromagnetic wave transmission cell to link by this aperture and near region field intensity meter.
Described signal generating module comprises high frequency oscillator, electric capacity, CPU, wave filter and follower; The two ends of high frequency oscillator connect behind the electric capacity ground connection more respectively; CPU drives the clock signal that high frequency oscillator produces standard, becomes sine wave signal through wave filter again; The output terminal and the follower of wave filter link, and the output terminal of follower is the output terminal of signal generating module, links with central layer.Described miniature transverse electromagnetic wave transmission cell front portion is the four sides taper, and the rear portion is cube shaped, and the wherein cubical length of side is 8cm-15cm.Described central layer one end was positioned at the vertex of a cone of four sides awl, and whole central layer separated cube by 2: 1.
The scope of the clock signal that described high frequency oscillator produces is that 100kHz is to 10mHz; Load is 50 ohm; The shell of central layer and miniature transverse electromagnetic wave transmission cell all adopts the thick copper coin of 1mm.
When high frequency oscillator produces accurately 5 stable or the miniature transverse electromagnetic wave transmission cell of 10MHz signal feed-in (TEM CELL), form uniform electric field at central layer and the side sheet room of TEM CELL, electric field intensity is 6.14V/m, accuracy is ± 8%.
Claims (6)
1. an electric field calibrating device is used to calibrate the near region field intensity meter, it is characterized in that: it comprises signal generating module and miniature transverse electromagnetic wave transmission cell; The output terminal of signal generating module and the central layer of miniature transverse electromagnetic wave transmission cell link, and the end of central layer is connected with load; The side of miniature transverse electromagnetic wave transmission cell has an aperture, places the calibration probe in the miniature transverse electromagnetic wave transmission cell to link by this aperture and near region field intensity meter.
2. electric field calibrating device according to claim 1 is characterized in that: described signal generating module comprises high frequency oscillator, electric capacity, CPU, wave filter and follower; The two ends of high frequency oscillator connect behind the electric capacity ground connection more respectively; CPU drives the clock signal that high frequency oscillator produces standard, becomes sine wave signal through wave filter again; The output terminal and the follower of wave filter link, and the output terminal of follower is the output terminal of signal generating module, links with central layer.
3. electric field calibrating device according to claim 2 is characterized in that: the scope of the clock signal that described high frequency oscillator produces is that 100kHz is to 10mHz.
4. electric field calibrating device according to claim 1 is characterized in that: described miniature transverse electromagnetic wave transmission cell is anterior to be the four sides taper, and the rear portion is cube shaped, and the wherein cubical length of side is 8cm-15cm; Described central layer one end was positioned at the vertex of a cone of four sides awl, and whole central layer separated cube by 2: 1.
5. electric field calibrating device according to claim 1 is characterized in that: the shell of described central layer and miniature transverse electromagnetic wave transmission cell all adopts the thick copper coin of 1mm.
6. according to any described electric field calibrating device in the claim 1 to 5, it is characterized in that: described load is 50 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920227436 CN201666946U (en) | 2009-08-14 | 2009-08-14 | Electric field calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920227436 CN201666946U (en) | 2009-08-14 | 2009-08-14 | Electric field calibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666946U true CN201666946U (en) | 2010-12-08 |
Family
ID=43267905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920227436 Expired - Lifetime CN201666946U (en) | 2009-08-14 | 2009-08-14 | Electric field calibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201666946U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135086A (en) * | 2013-02-20 | 2013-06-05 | 华北电力大学 | Calibration device and calibration and verification method for direct current electric field measuring apparatus |
| CN103983933A (en) * | 2014-05-08 | 2014-08-13 | 工业和信息化部电子第五研究所 | Calibration measurement and frequency calibration method, system and device of board-level radio-frequency current probe |
| CN106772170A (en) * | 2015-11-23 | 2017-05-31 | 中国电力科学研究院 | A kind of calibration method of UHF partial-discharge measuring devices |
| CN108020802A (en) * | 2017-11-17 | 2018-05-11 | 北京无线电计量测试研究所 | A kind of electric field probe calibration method and device |
-
2009
- 2009-08-14 CN CN 200920227436 patent/CN201666946U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135086A (en) * | 2013-02-20 | 2013-06-05 | 华北电力大学 | Calibration device and calibration and verification method for direct current electric field measuring apparatus |
| CN103135086B (en) * | 2013-02-20 | 2015-12-23 | 华北电力大学 | The caliberating device of DC electric field measurement instrument and demarcation thereof and method of calibration |
| CN103983933A (en) * | 2014-05-08 | 2014-08-13 | 工业和信息化部电子第五研究所 | Calibration measurement and frequency calibration method, system and device of board-level radio-frequency current probe |
| CN106772170A (en) * | 2015-11-23 | 2017-05-31 | 中国电力科学研究院 | A kind of calibration method of UHF partial-discharge measuring devices |
| CN108020802A (en) * | 2017-11-17 | 2018-05-11 | 北京无线电计量测试研究所 | A kind of electric field probe calibration method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101208 |
|
| CX01 | Expiry of patent term |