CN201796131U - Two-dimensional low-radio frequency field vector measuring tool - Google Patents
Two-dimensional low-radio frequency field vector measuring tool Download PDFInfo
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- CN201796131U CN201796131U CN2010205368642U CN201020536864U CN201796131U CN 201796131 U CN201796131 U CN 201796131U CN 2010205368642 U CN2010205368642 U CN 2010205368642U CN 201020536864 U CN201020536864 U CN 201020536864U CN 201796131 U CN201796131 U CN 201796131U
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Abstract
The utility model provides a two-dimensional low-radio frequency field vector measuring tool comprising a signal receiver and a signal tester, wherein the signal receiver comprises two-dimensional induction coils which are vertical to each other and both the two-dimensional induction coils are connected with the signal tester through leads; and the signal tester comprises a magnetic core arranged in an antimagnetic shielding box and a testing coil wound on the magnetic core, wherein one end of the testing coil is connected with the lead, while the other end is connected with a current shielding joint. In the utility model, a magnetic field is tested by adopting the two-dimensional induction coils and the testing coil; the induction measurement on the magnetic field can be realized by the electromagnetic induction principle; the frequency can be adjusted and tested by adjusting the winding state of the testing coil; the application range is wide; in addition, after demarcation, the two-dimensional low-radio frequency field vector measuring tool can measure the vector components of a radio-frequency magnetic field in two directions, thus being capable of determining the direction and the size of an induced magnetic field in a certain plane of the radio-frequency field and further calculating resonance regions and inducing signal receiving strength.
Description
Technical field
The utility model relates to a kind of two-dimentional low frequency radio frequency field vector survey instrument.
Background technology
Radio-frequency (RF) magnetic field is the excited nuclear magnetization Necessary Conditions for Resonance.The vector value of measuring radio-frequency (RF) magnetic field has significance for definite resonance zone and reckoning signal intensity.Chang Yong magnetic field measuring apparatus on the market is 400Hz to the measurement upper limit of alternating magnetic field, and the performance of hall device makes survey frequency be difficult to obtain very big lifting; Can only measure its power mostly and be exclusively used in the electromagnetic instrument of measurement, and frequency of operation is tens of more than million.The electromagnetic wave magnetic vector of 1k～10MHz scope is measured and is in blank substantially.Wherein hundreds of k are the frequency of operation of NMR (Nuclear Magnetic Resonance) logging instrument to the frequency range of several M, and the magnetic vector that can't measure this frequency range just is difficult to determine resonance zone box reckoning signal intensity.
The utility model content
The technical problems to be solved in the utility model provides a kind of two-dimentional low frequency radio frequency field vector survey instrument that can measure the electromagnetic wave magnetic vector of 1k～10MHz scope simply, effectively.
In order to address the above problem, the utility model provides a kind of two-dimentional low frequency radio frequency field vector survey instrument, comprising:
Signal receiver, described signal receiver comprise orthogonal two-dimentional inductive coil, and described two-dimentional inductive coil all connects the signal testing device by lead;
Signal testing device, described signal testing device comprise and are arranged on the magnetic core in the antimagnetic shield box and are wound on test coil on this magnetic core that described test coil one end links to each other with described lead, other end connection current shielding joint.
Further, described signal receiver also comprises the coil matrix of being made by non-magnet material, and described coil matrix is provided with orthogonal circular groove, and described two-dimentional inductive coil is separately positioned in this circular groove.
Further, described coil matrix is near the also fixedly connected stay pipe that is provided with of an end of described signal testing device, and described two-dimentional inductive coil passes described stay pipe and connects described signal testing device.
Further, described signal testing device carries out signal output by oscillograph.
Further, described signal testing device carries out signal output by capture card.
The utlity model has following advantage:
1, the utility model adopts two-dimentional inductive coil and test coil to test this magnetic field, with the measurement of inductance of electromagnetic induction principle realization to magnetic field, can adjust test frequency by adjusting test coil coiling state, applied widely, and after demarcation, can measure the component of radio-frequency (RF) magnetic field both direction, thereby can be used for determining induced magnetism field direction and the size of radio-frequency field in a certain plane, further calculate resonance zone and induction received signal intensity.
2, the utility model is simple in structure, test is reliable, and signal receiver is fixed, it is reliable to move, and can improve measuring accuracy of the present utility model greatly.
3, can adopt oscillograph or capture card to carry out signal output in the utility model, determine to use the output instrument, use flexibly according to the precision needs.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Fig. 1 shows a kind of two-dimentional low frequency radio frequency field vector survey instrument structural representation of the utility model;
Fig. 2 shows signal testing device inner structure synoptic diagram in a kind of two-dimentional low frequency radio frequency field vector survey instrument of the utility model;
Fig. 3 shows a kind of two-dimentional low frequency radio frequency field vector survey instrument user mode synoptic diagram of the utility model.
Embodiment
As shown in Figure 1 and Figure 2, the utility model comprises signal receiver 1 and signal testing device 2.Signal receiver 1 is used to receive magnet 5 magnetic signals, produces current signal, and this current signal is sent to signal testing device 2.The current signal that signal testing device 2 received signal receivers 1 send carries out electromagnetic induction, generates electromagnetic waves.
The utility model adopts two-dimentional inductive coil 11 and test coil 23 these magnetic fields of test, with the measurement of inductance of electromagnetic induction principle realization to magnetic field, can adjust test frequency by adjusting test coil 23 coiling states, applied widely, and after demarcation, can measure the component of radio-frequency (RF) magnetic field both direction, thereby can be used for determining induced magnetism field direction and the size of radio-frequency field in a certain plane, further calculate resonance zone and induction received signal intensity.
In the utility model, signal receiver 1 also comprises the coil matrix of being made by non-magnet material 13, and coil matrix 13 is provided with orthogonal circular groove 14, and two-dimentional inductive coil 11 is separately positioned in this circular groove 14.This coil matrix 13 is a square, and this circular groove 14 is used for fixing two-dimentional inductive coil 11, and limits effective induction area for vertical mutually circular groove is arranged on the square surface.
Two dimension inductive coil 11 has two, by shielding copper cash in the circular groove 14 of coil matrix 13.The screen layer of two coil infalls will disconnect.This design can effectively shield induction field on the one hand, receives only the electromagnetic magnetic field of inducting; Can reduce the difference of two coil useful area on the other hand, the detection sensitivity of both direction is reached unanimity.
In the utility model, the also fixedly connected stay pipe 15 that is provided with of an end of coil matrix 13 approach signal testers 2, two-dimentional inductive coil 11 pass stay pipe 15 and connect signal testing device 2.This stay pipe 15 is used for support fixation coil matrix 13, but and guardwire 12.This stay pipe 15 is glass tube or rubber tube.
The utility model is simple in structure, test is reliable, and signal receiver 1 is fixing, mobile reliable, can improve measuring accuracy of the present utility model greatly.
As shown in Figure 3, in the utility model, signal testing device 2 carries out signal output by oscillograph 3 or capture card 4.Oscillograph 3 output signal accuracy grades are low, capture card 4 output signal accuracy grade height.Can adopt oscillograph 3 or capture card 4 to carry out signal output in the utility model, determine to use the output instrument, use flexibly according to the precision needs.
Use of the present utility model as shown in Figure 3, magnet 5 to be measured and signal receiver 1 all are arranged on the support 6, and make signal receiver 1 be parallel to magnet 5 to be measured, move this signal receiver 1, make signal receiver 1 interior orthogonal two-dimentional inductive coil 11 all produce sensor current signal, and send to test coil 23 in the signal testing device 2 by lead 12, test coil 23 carries out electromagnetic induction according to the coiling situation on magnetic core 22 to this sensor current signal, generate electromagnetic waves, gather this electromagnetic wave signal of output by oscillograph 3 or capture card 4, the row vector of going forward side by side is synthetic, just can obtain the magnetic vector data of this magnet 5 on two dimensional surface.
Adopt the utility model, measurement parameter is as shown in the table:
In sum; it below only is preferred embodiment of the present utility model; be not to be used to limit protection domain of the present utility model; therefore; all any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. a two-dimentional low frequency radio frequency field vector survey instrument is characterized in that, comprising:
Signal receiver (1), described signal receiver (1) comprises orthogonal two-dimentional inductive coil (11), described two-dimentional inductive coil (11) all connects signal testing device (2) by lead (12);
Signal testing device (2), described signal testing device (2) comprises and is arranged on the magnetic core (22) in the antimagnetic shield box (21) and is wound on test coil (23) on this magnetic core (22), described test coil (23) one ends link to each other with described lead (12), and the other end connects current shielding joint (24).
2. two-dimentional low frequency radio frequency field vector survey instrument as claimed in claim 1, it is characterized in that: described signal receiver (1) also comprises the coil matrix of being made by non-magnet material (13), described coil matrix (13) is provided with orthogonal circular groove (14), and described two-dimentional inductive coil (11) is separately positioned in this circular groove (14).
3. two-dimentional low frequency radio frequency field vector survey instrument as claimed in claim 2, it is characterized in that: described coil matrix (13) is near the also fixedly connected stay pipe (15) that is provided with of an end of described signal testing device (2), and described two-dimentional inductive coil (11) passes described stay pipe (15) and connects described signal testing device (2).
4. as the arbitrary described two-dimentional low frequency radio frequency field vector survey instrument of claim 1-3, it is characterized in that: described signal testing device (2) carries out signal output by oscillograph (3).
5. as the arbitrary described two-dimentional low frequency radio frequency field vector survey instrument of claim 1-3, it is characterized in that: described signal testing device (2) carries out signal output by capture card (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205368642U CN201796131U (en) | 2010-09-19 | 2010-09-19 | Two-dimensional low-radio frequency field vector measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205368642U CN201796131U (en) | 2010-09-19 | 2010-09-19 | Two-dimensional low-radio frequency field vector measuring tool |
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| Publication Number | Publication Date |
|---|---|
| CN201796131U true CN201796131U (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205368642U Expired - Fee Related CN201796131U (en) | 2010-09-19 | 2010-09-19 | Two-dimensional low-radio frequency field vector measuring tool |
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| CN (1) | CN201796131U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760502A (en) * | 2014-01-29 | 2014-04-30 | 北京理工大学 | Three-dimensional magnetic induction intensity measurement coil for ultra-high-speed collision magnetic field |
| CN117907667A (en) * | 2024-03-20 | 2024-04-19 | 季华实验室 | Acquisition device |
-
2010
- 2010-09-19 CN CN2010205368642U patent/CN201796131U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760502A (en) * | 2014-01-29 | 2014-04-30 | 北京理工大学 | Three-dimensional magnetic induction intensity measurement coil for ultra-high-speed collision magnetic field |
| CN117907667A (en) * | 2024-03-20 | 2024-04-19 | 季华实验室 | Acquisition device |
| CN117907667B (en) * | 2024-03-20 | 2024-05-28 | 季华实验室 | Acquisition device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20180919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |