CN202975154U - Electromagnetic coupling resonance coil parameter measuring system - Google Patents
Electromagnetic coupling resonance coil parameter measuring system Download PDFInfo
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- CN202975154U CN202975154U CN 201220552904 CN201220552904U CN202975154U CN 202975154 U CN202975154 U CN 202975154U CN 201220552904 CN201220552904 CN 201220552904 CN 201220552904 U CN201220552904 U CN 201220552904U CN 202975154 U CN202975154 U CN 202975154U
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Abstract
The utility model discloses an electromagnetic coupling resonance coil parameter measuring system, which belongs to the wireless power transmission and conversion field. The system which has a wide application prospect is able to perform accurate parameter measurement on a resonance coil which is a key component in a wireless power transmission system. A signal generator cooperates with a power amplifier to supply power to a transmitting coil. The transmitting coil and the resonance coil establish an electromagnetic coupling resonance system so as to make a receiving coil acquire corresponding waveforms. The parameters of the resonance coil are thus accurately measured. The electromagnetic coupling resonance coil parameter measuring system mainly comprises the signal generator (1), an on-off control switch (2), a power amplifier (3), a primary compensation network (4), the transmitting coil (5), the resonance coil (6), the receiving coil (7) and an oscilloscope (8). The system can perform parameter measurement on resonance coils working with a frequency less than 30MHz to ensure the reliability of a wireless power transmission process. The system has the advantages of low cost, low maintenance fee, simple operation, intelligence and controllability, etc.
Description
Technical field
The wireless power transmission technology is one of most active hot research direction in present electrical engineering field, it is the advanced subject that integrates fundamental research and applied research, be the new research field of a multidisciplinary strong intersection of the outer academia of Present Domestic and industry member exploration, contain many technical fields such as electromagnetic field, Power Electronic Technique, electric system, control technology, physics, materialogy, infotech.Adopt the wireless power mode can effectively overcome all kinds of defectives that the electric wire connected mode exists, realize freely powering of electronic apparatus, have important application expection and vast potential for future development.
The present invention---electromagnetic coupled resonance coil parameter measurement system, based on the wireless power transmission know-why, according to electromagnetic coupled resonance correlation theory, method by experiment, parameter to resonance coil in the electromagnetic coupled resonator system is accurately measured, thereby can give full play to the electrical specification of resonance coil.This parameter measurement system can be widely used in resonance coil self resonance frequency of the following work of 30MHz and the measurement environment of quality factor.
Background technology
The wireless power transmission technology is broadly divided into three kinds: the first is the inductive coupling type electric energy transmission, and it utilizes the loosely coupled transformer principle to pass energy, and generally there are the core device that reduces the loop magnetic resistance in transmitting terminal and receiving end.The second is electromagnetic coupled resonant mode delivery of electrical energy, by inductance on the resonator of high quality factor and distributed capacitor generation resonance transmitting energy.The third is electromagnetic radiation formula delivery of electrical energy, and electric energy is converted into microwave form in this technology, and transmission range exceedance km can be realized the teletransmission of electric energy.Wherein the electromagnetic coupled harmonic technology utilizes non-radiative electromagnetic field near-field region to complete delivery of electrical energy, than induction biography energy, very large expansion has been arranged on transmission range on the one hand; Compare on the other hand the electromagnetic radiation formula and pass energy, the near-field region energy has radiationless characteristics, and this technology has security preferably, therefore obtains at present very large concern and research.
Summary of the invention
Technical matters to be solved by this invention is, under the guidance of electromagnetic coupled resonance type wireless delivery of electrical energy theory, in non-contacting mode, resonance frequency and the quality factor of resonance coil in system are carried out Measurement accuracy, thereby can carry out measurement and correction to a plurality of coils, realize high efficient and reliable and the remote wireless transmission of electric energy.
the technical solution adopted in the present invention is: electromagnetic coupled resonance coil parameter measurement system, include signal generator (1) under the control of make-and-break control switch (2) to power amplifier (3) signal transmission, power amplifier (3) is converted into corresponding power with this signal and is loaded on transmitting coil (5) through elementary corrective network (4), transmitting coil (5) carries out energy exchange with resonance coil (6) by wireless mode, then resonance coil (6) sends energy to receiving coil (7) in the mode of responding to, waveform on receiving coil (7) is by oscillograph (8) monitoring.
Described transmitting coil (5) adopts the low-loss copper tube of wire diameter 6mm, thick 0.5mm, and its surface is through making the single-turn circular coil of round section after silver-plated antirust processing, be responsible for loading the high-frequency electromagnetic energy and in the mode of induction to the next stage transmission.
Described resonance coil (6) turns to helical structure and coaxial concentric on placement with transmitting coil (5) by the low-loss copper tube of any thickness, the number of turn of helical structure, radius and turn-to-turn are apart from resonance frequency, the quality factor that will directly affect resonance coil, and responsible induction is positioned at the high-frequency energy on transmitting coil (5) and sets up idle near field.
Described receiving coil (7) consists of by the low-loss multiturn and around the Teflon silver jacketed wire, and with the coaxial concentric placement of resonance coil A2 (7), output two ends be connected with load (9), its number of turn is decided by the locus of loading coil work.
electromagnetic coupled resonance coil parameter measurement system of the present invention, load High frequency electromagnetic power and send resonance coil (6) in the mode of responding to by transmitting coil (5), thereby make resonance coil (6) form stable idle near field around it, when AC signal source change excitation frequency, the maximum gain point that only has the corresponding resonance coil of a frequency (6), can measure the resonance frequency of this point and resonance coil (6) is carried out calculation of parameter accurately by receiving coil (7) thus, realize the accurate measurement of resonance coil parameter in the electromagnetic coupled resonator system.
Description of drawings
Fig. 1 is one-piece construction figure of the present invention;
Fig. 2 is the structural drawing of transmitting coil (5);
Fig. 3 is the structural drawing of resonance coil (6);
Fig. 4 is the structural drawing of receiving coil (7);
Fig. 5 is the fundamental diagram of electromagnetic coupled resonance coil parameter measurement system.
Wherein:
(1): signal generator; (2): make-and-break control switch; (3): power amplifier; (4): elementary corrective network; (5): transmitting coil; (6): resonance coil; (7): receiving coil; (8): oscillograph
1: transmitting coil; 2: resonance coil; 3: receiving coil; 4: AC power; 5: oscillograph
Embodiment
Below in conjunction with example and accompanying drawing, electromagnetic coupled resonance coil parameter measurement system of the present invention is made a detailed description.
As shown in Figure 1, radio energy transmission system electromagnetic energy coupling mechanism of the present invention, include: signal generator (1), make-and-break control switch (2), power amplifier (3), elementary corrective network (4), transmitting coil (5), resonance coil (6), receiving coil (7), oscillograph (8).
As shown in Figure 2, described transmitting coil (5) is realized after having the silver-plated antirust processing of certain thickness individual pen low-loss copper tube surface process, be the gain of guaranteed output signal in the certain frequency scope, coordinate elementary corrective network (4) work.When starting working, make-and-break control switch (2) matches with power amplifier (3) when signal generator (1), and produces the high-frequency electromagnetic energy according to the inductance value of transmitting coil (5).This energy will directly be loaded on transmitting coil (5).
As shown in Figure 3, described resonance coil (6) by have certain thickness low-loss copper tube turn to helical structure and with the coaxial placement of transmitting coil (5).When transmitting coil (5) works, be loaded on resonance coil (6) by transmitting coil (5) according to the principle electromagnetic energy of electromagnetic induction, and set up idle near field by resonance coil (6).Meanwhile, when having other coils in resonance coil (6) surrounding space, will according to the rule of electromagnetic coupled resonance wireless power transmission theory, obtain electromagnetic energy by idle near field.
As shown in Figure 4, described receiving coil (7) is by silver-plated low-loss multiturn and consist of around the Teflon coil, and with resonance coil (6) placement that is spaced a distance, output two ends are connected with oscillograph (8).When resonance coil (6) when setting up idle near field, receiving coil (7) will obtain electromagnetic energy according to the electromagnetic coupled resonance principle, the frequency characteristic of this energy is directly relevant to the electric parameter of resonance coil (6), thereby can complete by the output waveform of oscillograph (8) measurement receiving coil (7) measurement of resonance coil (6) self parameter.
As shown in Figure 5, at first described electromagnetic coupled resonance coil parameter measurement system is loaded into the high-frequency electromagnetic energy on transmitting coil (5), energy passes to resonance coil (6) and sets up idle near field with the form of induction, when AC signal source change excitation frequency, the maximum gain point that only has the corresponding resonance coil of a frequency (6), can measure the resonance frequency of this point and resonance coil (6) is carried out calculation of parameter accurately by receiving coil (7) thus, realize the accurate measurement of resonance coil parameter in the electromagnetic coupled resonator system.
Electromagnetic coupled resonance coil parameter measurement system of the present invention, according to electromagnetic coupled resonance correlation theory, method, accurately measure electromagnetic coupled resonance type wireless electric energy transmission system by experiment, for high efficient and reliable and the remote wireless transmission that realizes electric energy provides safeguard.Under normal operation, can carry out Measurement accuracy by the interior radio energy feed system of logarithm rice scope, can be widely used in resonance coil self resonance frequency of the following work of 30MHz and the measurement environment of quality factor.
Claims (3)
1. electromagnetic coupled resonance coil parameter measurement system, it is characterized in that including signal generator (1) under the control of make-and-break control switch (2) to power amplifier (3) signal transmission, power amplifier (3) is converted into corresponding power with this signal and is loaded on transmitting coil (5) through elementary corrective network (4), transmitting coil (5) carries out energy exchange with resonance coil (6) by wireless mode, then resonance coil (6) sends energy to receiving coil (7) in the mode of responding to, waveform on receiving coil (7) is by oscillograph (8) monitoring.
2. electromagnetic coupled resonance coil parameter measurement system according to claim 1, be further characterized in that, described transmitting coil (5) adopts the low-loss copper tube of wire diameter 6mm, thick 0.5mm, and its surface is through making the single-turn circular coil of round section after silver-plated antirust processing.
3. electromagnetic coupled resonance coil parameter measurement system according to claim 1, be further characterized in that, described resonance coil (6) turns to helical structure and coaxial concentric on placement with transmitting coil (5) by the low-loss copper tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220552904 CN202975154U (en) | 2012-10-24 | 2012-10-24 | Electromagnetic coupling resonance coil parameter measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220552904 CN202975154U (en) | 2012-10-24 | 2012-10-24 | Electromagnetic coupling resonance coil parameter measuring system |
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| Publication Number | Publication Date |
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| CN202975154U true CN202975154U (en) | 2013-06-05 |
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| CN 201220552904 Expired - Fee Related CN202975154U (en) | 2012-10-24 | 2012-10-24 | Electromagnetic coupling resonance coil parameter measuring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884920A (en) * | 2014-03-20 | 2014-06-25 | 吉林大学 | Automatic frequency sweeping inductance measuring meter and measuring method |
| CN114895106A (en) * | 2022-03-28 | 2022-08-12 | 电子科技大学 | Resistivity measuring method based on near-field scanning microwave microscope |
-
2012
- 2012-10-24 CN CN 201220552904 patent/CN202975154U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884920A (en) * | 2014-03-20 | 2014-06-25 | 吉林大学 | Automatic frequency sweeping inductance measuring meter and measuring method |
| CN114895106A (en) * | 2022-03-28 | 2022-08-12 | 电子科技大学 | Resistivity measuring method based on near-field scanning microwave microscope |
| CN114895106B (en) * | 2022-03-28 | 2023-04-07 | 电子科技大学 | Resistivity measuring method based on near-field scanning microwave microscope |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131024 |