CN102711327A - LED (light emitting diode) indoor desk lamp based on wireless electric energy transmission technology - Google Patents
LED (light emitting diode) indoor desk lamp based on wireless electric energy transmission technology Download PDFInfo
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- CN102711327A CN102711327A CN2012101640928A CN201210164092A CN102711327A CN 102711327 A CN102711327 A CN 102711327A CN 2012101640928 A CN2012101640928 A CN 2012101640928A CN 201210164092 A CN201210164092 A CN 201210164092A CN 102711327 A CN102711327 A CN 102711327A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention relates to the design of an LED indoor desk lamp based on wireless electric energy transmission technology. The LED indoor desk lamp mainly comprises a radio frequency power amplifier circuit, an impedance matching circuit, a transmitting coil, a receiving coil, a rectifying and voltage regulating circuit and so on. The system belongs to the frontier field of engineering application of high frequency electromagnetic theory, and solves the problem of the application of wireless electric energy transmission in the LED indoor desk lamp. The invention overcomes the constraint of conventional wires to the LED lamp, and designs a green lighting device with flexibility in moving, safety, reliability and no pollution to overcome the inconvenience and potential risk caused by complicated wires in room. The green and energy-saving LED indoor desk lamp based on wireless electric energy transmission technology is low in cost, wireless, convenient in carrying and so on, and has a great application prospect in future indoor lighting.
Description
Technical field
The present invention relates to a kind of indoor desk lamp of LED of wireless power transmission technology.The indoor desk lamp of LED that particularly relates to advantages such as a kind of energy savings, cost are lower, wireless portable.
Background technology
Found to utilize since 1840 electromagnetic induction phenomenon and lead can electric energy transmitting so far, the transmission of electric energy mainly by lead directly contact transmits.The charging of electrical equipment generally is to carry out through plug and socket, but when carrying out high-power charging, the danger that this charging modes exists high pressure to get an electric shock.And owing to there is friction and wear, the fail safe of system, reliability and useful life are lower, particularly in some inflammable, explosive fields such as chemical industry, mining, very easily cause big accident.Novel contactless electric energy transmission system adopts electromagnetic induction principle, power electronic technology and control theory to combine, and has realized the wireless transmission of electric energy, has overcome with limit fully.
According to the electric energy transmitting principle, wireless power transmission can be divided three classes haply: the first kind is the direct manifold type of transformer principle, though this mode power is bigger, only is suitable for closely; Second type of electric wave wireless energy transmission technology; The principle of directly utilizing electromagnetic wave energy to transmit and receive through antenna; Though this mode has realized the transmission of long distance and high-power energy, power transfer recipient is to restriction, can not the cut-through thing; And loss is bigger, and human body and other biology are all had grievous injury; The 3rd type is non-radiation coupled resonance mode, and this technology can be transmitted having under the situation of barrier, and transmission range is also distant, and through-put power is also bigger, and to not injury of human body.
In sum, the third electric energy transmitting mode has very big potentiality to be exploited, therefore applies it to the illuminating product (the indoor desk lamp of LED) that has energy-saving effect at present and has important practical significance.
LED compares with traditional illuminating lamp (like incandescent lamp) etc.; Have energy-conservation, life-span length, antidetonation, reaction speed is fast and advantage such as environmental protection; Add the cold light characteristic that LED self is unique; Make the profile of light fixture can not be out of shape, thereby improve the life-span of lamp package that therefore the application in illuminator is increasing because of being heated for a long time.
The present invention has been intended to overcome bound to the LED lamp of lead traditionally, designed a kind ofly move flexibly, safety, reliable and pollution-free green lighting device, and solved inconvenience and the potential safety hazard that indoor various lead brings.
Summary of the invention
Technical problem to be solved by this invention is, proposed a kind of indoor desk lamp of LED based on the wireless power transmission technology, and this system has long transmission distance, and efficiency of transmission is high, and cost is lower, the characteristics of green energy conservation.
The technical scheme that the present invention adopted is: the indoor desk lamp of LED based on the wireless power transmission technology mainly comprises radiofrequency signal generation circuit, RF power amplification circuit, impedance matching circuit, transmitting coil, receiving coil, regulator rectifier circuit, LED load.Described radiofrequency signal generation circuit is used to produce the sine wave with Electro-magnetic Launcher System and electromagnetism receiving system resonance frequency same frequency; The RF power amplification circuit is used for required sinusoidal wave power amplification; Impedance matching circuit is used for the regulating load impedance with the output impedance of coupling RF power amplification; Transmitting coil is used to produce high frequency magnetic field; Receiving coil is used to receive the high frequency magnetic field of transmitting coil generation and it is become electric energy; Regulator rectifier circuit be used for earlier with wireless receiving to high-frequency alternating current be made into direct current, pressure regulation is stabilized in the required voltage value with voltage again.
Described radiofrequency signal generation circuit is made up of MAX038 chip and peripheral circuit, is provided with the frequency modulation module, and is simple in structure, easy to use; Resistance through regulating the adjustable resistance RP1 that links to each other with MAX038 pin REF can realize regulating output signal frequency, is used for following the tracks of the resonance frequency of transmitting coil and receiving coil; Can realize regulating the amplitude of output signal through the resistance of the adjustable resistance RP2 in the peripheral circuit of regulating the MAX038 chip.
Described RF power amplification circuit includes the 50 Europe matched-impedance load that receive the sinusoidal signal that sinusoidal signal generation circuit sends, i.e. input transformer T1, and input transformer T1 receives signal and is transferred to radio frequency MOSFET module, and this signal is carried out power amplification; The category-A that this RF power amplification circuit block belongs to RF power amplification amplifies, and has good linear character.
Described impedance matching circuit belongs to zero reflection match circuit, adopts L type coupling on the structure.That this circuit has is simple in structure, parameter designing advantage flexibly.This circuit adopts non-resistive element to make its consumed power not in theory.
Described transmitting coil is made up of single turn excitation variable winding and multiturn coupling coil.The single turn excitation variable winding is connected with the output of RF power amplification circuit, and the high-frequency ac voltage that is produced by the RF power amplification circuit provides energy to produce the alternation high frequency magnetic field.This high frequency magnetic field and multiturn coupling coil go out its emission of magnetic field that produces greater strength through direct coupling.
Described receiving coil is made up of multiturn coupling coil and loading coil, and the multiturn coupling coil of receiving coil has identical resonance frequency with the multiturn coupling coil of transmitting coil, realizes the mutual conversion of electromagnetic energy through resonance close coupling mode.Loading coil is a single-turn circular coil, and the multiturn coupling coil of this coil and receiving coil is to get ability through direct coupling system, and loading coil connects load provides energy to load.
Described regulator rectifier circuit is by high-frequency rectification circuit and two parts of DC/DC change-over circuit.The bridge circuit that high-frequency rectification circuit is made up of four diodes with HF switch characteristic, this circuit is rectified into direct current with high-frequency alternating current.The DC/DC change-over circuit arrives the needed voltage of LED with the further voltage stabilizing of voltage that rectification is come.
The indoor desk lamp of LED based on the wireless power transmission technology of the present invention, this system has long transmission distance, and efficiency of transmission is high, and cost is lower, the characteristics of green energy conservation.After system's energising work, when making its output frequency change to the resonance frequency of system through the adjusting sinusoidal signal generation circuit, system reaches maximum through-put power and transmission range.Distance changes when system parameters changes perhaps, also can find the best and laser propagation effect very soon through the output frequency of conditioning signal.This experimental system power amplifier module can be in the 1.6MHz--28MHz scope frequency adjustable, and output has the good linearity.Through to whole system input 50V direct voltage, make 20 LED lamps (10W) can be normally luminous, satisfy the needs of people's room lighting.
Description of drawings
Fig. 1 is the whole frame of design system;
Fig. 2 is a radiofrequency signal generation circuit;
Fig. 3 is the RF power amplification circuit;
Fig. 4 is a transmitting coil;
Fig. 5 is a receiving coil;
Embodiment
The present invention provides a kind of long transmission distance, and efficiency of transmission is high, and cost is lower, the indoor desk lamp of the LED of green energy conservation.Below in conjunction with embodiment and accompanying drawing the indoor desk lamp of LED based on the wireless power transmission technology of the present invention is made detailed description.
As shown in Figure 1, the indoor desk lamp of LED based on the wireless power transmission technology of the present invention includes radiofrequency signal generation circuit 1, and also be provided with: RF power amplification circuit 2 is used to receive sinusoidal signal and it is carried out power amplification; Impedance matching circuit 3 is used for the regulating load size is complementary itself and RF power amplification output impedance; Transmitting coil 4 is used for the high frequency sinusoidal alternating electric energy with certain power that received RF power amplifier 2 produces, and converts it into high-frequency alternating magnetic field; Receiving coil 5 is used to receive the high frequency magnetic field that transmitting coil 4 sends and converts it into electric energy; Regulator rectifier circuit 6 be used for earlier with wireless receiving to high-frequency alternating current be made into direct current, pressure regulation is stabilized in the required voltage value with voltage again; The LED load can stabilized illumination work under its rated voltage.Owing to adopted the resonance coupling technique; Make electric energy wireless transmitted power and distance obtain raising by a relatively large margin; Owing to adopted non-electromagnetic radiation coupling technique, it is minimum to make that radiation loss drops to, and has improved efficiency of transmission system is safe from harm to people and other biological body again.
As shown in Figure 2, described radiofrequency signal generation circuit 1 is made up of MAX038 chip and peripheral circuit, is provided with the frequency modulation module, and is simple in structure, easy to use; Resistance through regulating the adjustable resistance RP1 that links to each other with MAX038 pin REF can realize regulating output signal frequency, is used for following the tracks of the resonance frequency of transmitting coil and receiving coil.Can realize regulating the amplitude of output signal through the resistance of the adjustable resistance RP2 in the peripheral circuit of regulating the MAX038 chip.
As shown in Figure 3, described RF power amplification circuit 2 constitutes power amplifier module by radio frequency MOSFET chip and peripheral circuit; Negative feedback and input impedance matching make system have bigger gain and less feedback loss; The former limit of broadband input transformer and the no-load voltage ratio of secondary are 4: 1, have 50 ohm impedance, and the signal of the input that makes has very little feedback.+ V
GBe used to regulate the quiescent point of MOSFET, generally should be transferred to about 3V and be advisable, at this moment the quiescent current of MOSFET is 150mA; + V
DDThe place provides 50V direct current, and this power supply also will meet a choking-winding L
3
Described impedance matching circuit belongs to zero reflection match circuit, adopts L type structure on the structure, is made up of an electric capacity and an inductance.Rectifying and pressure-regulating and LED load overall impedance that electric capacity and inductance are formed matching network and back are 50 Europe.That this circuit has is simple in structure, parameter designing advantage flexibly.
As shown in Figure 4, described transmitting coil 4 is made up of single turn excitation variable winding and multiturn coupling coil, and the transmitting coil diameter is 600mm.The single turn excitation variable winding is connected with the output of RF power amplification circuit, and the high-frequency ac voltage that is produced by the RF power amplification circuit provides energy to produce the alternation high frequency magnetic field.This high frequency magnetic field and multiturn coupling coil go out its emission of magnetic field that produces greater strength through direct coupling.
As shown in Figure 5; Described receiving coil 5 is made up of multiturn coupling coil and loading coil; The receiving coil diameter is 100mm, and the multiturn coupling coil of receiving coil and the multiturn coupling coil of transmitting coil have identical resonance frequency, receives the electromagnetic energy of transmitting coil through the resonance coupled modes; Loading coil is a single-turn circular coil, is formed by the enamelled wire coiling, and this coil and receiving coil multiturn coupling coil are got through direct coupling system can.
Rectification circuit is formed by four rf diode bridge joints, and this diode has the advantages that loss is little, switching frequency is high, so be fit to the radio frequency rectification.The DC/DC circuit becomes LED rated voltage supply load LED with the output voltage of rectification circuit.
Below schematically the present invention and execution mode thereof are described, this description does not have limitation, and shown in the accompanying drawing also is one of execution mode of the present invention.So if those of ordinary skill in the art is enlightened by it; Under the situation that does not break away from the invention aim; Adopt the same base part of other form or each component layouts mode of other form; Without creationary technical scheme similar and the embodiment of designing, all should belong to protection scope of the present invention with this technical scheme.
Claims (1)
1. based on the indoor desk lamp of LED of wireless power transmission technology, mainly comprise radiofrequency signal generation circuit, RF power amplification circuit, impedance matching circuit, transmitting coil, receiving coil, regulator rectifier circuit, LED load; It is characterized in that said impedance matching circuit (3) adopts L type structure, and constitute harmless matching network by electric capacity and inductance; Described transmitting coil (4), its design parameter are diameter 600mm, line footpath 1mm, the number of turn 5 circles; Described receiving coil (5), its design parameter are diameter 100mm, line footpath 1mm, and the number of turn 15 circles, and in the identical resonance frequency of transmitting coil maintenance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101640928A CN102711327A (en) | 2012-05-25 | 2012-05-25 | LED (light emitting diode) indoor desk lamp based on wireless electric energy transmission technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101640928A CN102711327A (en) | 2012-05-25 | 2012-05-25 | LED (light emitting diode) indoor desk lamp based on wireless electric energy transmission technology |
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| CN102711327A true CN102711327A (en) | 2012-10-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216796A (en) * | 2013-03-29 | 2013-07-24 | 襄阳亦昇光电科技有限公司 | LED (Light-Emitting Diode) lamp based on discrete wireless power supply |
| CN103560596A (en) * | 2013-11-08 | 2014-02-05 | 天津工业大学 | Trailer lamp system with energy and control signals in wireless transmission |
| CN105228306A (en) * | 2015-09-30 | 2016-01-06 | 桂林么么科技发展有限公司 | Based on light adjusting system and the application thereof of wireless energy transfer |
| CN106500448A (en) * | 2016-12-31 | 2017-03-15 | 上海复展智能科技股份有限公司 | A kind of glass light-guiding illuminating device of wireless driving |
| CN110596764A (en) * | 2019-07-31 | 2019-12-20 | 宁波市乐星感应电器有限公司 | Inductor |
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| CN1227678A (en) * | 1996-06-13 | 1999-09-01 | 射频功率产品公司 | Method and apparatus for matching a variable load impedence with an RF power generator impedance |
| CN101860375A (en) * | 2009-04-13 | 2010-10-13 | 和硕联合科技股份有限公司 | Wireless communication device |
| CN101969237A (en) * | 2010-11-05 | 2011-02-09 | 天津工业大学 | Radio electric energy transmission experimental system |
| WO2011093292A1 (en) * | 2010-01-26 | 2011-08-04 | 株式会社エクォス・リサーチ | Non-contact power transmission system and non-contact power transmission apparatus |
| CN202652623U (en) * | 2012-05-25 | 2013-01-02 | 天津工业大学 | LED indoor desk lamp based on wireless electric energy transmission technology |
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2012
- 2012-05-25 CN CN2012101640928A patent/CN102711327A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1227678A (en) * | 1996-06-13 | 1999-09-01 | 射频功率产品公司 | Method and apparatus for matching a variable load impedence with an RF power generator impedance |
| CN101860375A (en) * | 2009-04-13 | 2010-10-13 | 和硕联合科技股份有限公司 | Wireless communication device |
| WO2011093292A1 (en) * | 2010-01-26 | 2011-08-04 | 株式会社エクォス・リサーチ | Non-contact power transmission system and non-contact power transmission apparatus |
| CN101969237A (en) * | 2010-11-05 | 2011-02-09 | 天津工业大学 | Radio electric energy transmission experimental system |
| CN202652623U (en) * | 2012-05-25 | 2013-01-02 | 天津工业大学 | LED indoor desk lamp based on wireless electric energy transmission technology |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216796A (en) * | 2013-03-29 | 2013-07-24 | 襄阳亦昇光电科技有限公司 | LED (Light-Emitting Diode) lamp based on discrete wireless power supply |
| CN103560596A (en) * | 2013-11-08 | 2014-02-05 | 天津工业大学 | Trailer lamp system with energy and control signals in wireless transmission |
| CN105228306A (en) * | 2015-09-30 | 2016-01-06 | 桂林么么科技发展有限公司 | Based on light adjusting system and the application thereof of wireless energy transfer |
| CN106500448A (en) * | 2016-12-31 | 2017-03-15 | 上海复展智能科技股份有限公司 | A kind of glass light-guiding illuminating device of wireless driving |
| CN110596764A (en) * | 2019-07-31 | 2019-12-20 | 宁波市乐星感应电器有限公司 | Inductor |
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Application publication date: 20121003 |