CN203339814U - RF energy collector - Google Patents
RF energy collector Download PDFInfo
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- CN203339814U CN203339814U CN2013203381311U CN201320338131U CN203339814U CN 203339814 U CN203339814 U CN 203339814U CN 2013203381311 U CN2013203381311 U CN 2013203381311U CN 201320338131 U CN201320338131 U CN 201320338131U CN 203339814 U CN203339814 U CN 203339814U
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- 239000003990 capacitor Substances 0.000 claims description 28
- 230000008878 coupling Effects 0.000 claims description 21
- 238000010168 coupling process Methods 0.000 claims description 21
- 238000005859 coupling reaction Methods 0.000 claims description 21
- 238000004146 energy storage Methods 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 241001124569 Lycaenidae Species 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
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Abstract
The utility model discloses a RF energy collector employing a RF reception terminal circuit to continuously receive radio wave signals in air; a voltage doubling circuit is employed to double the signal voltage; a rear end micro energy collector can effectively and continuously collect the energy in the RF reception terminal circuit; in the energy collecting process, the micro energy collector starts to work when output voltage of the RF reception terminal circuit is bigger than 330mv, and the energy can be continuously stored in energy saving elements like a supercapacitor, a lithium ion battery and the like. The micro energy collector can continuously work when the output voltage of the RF reception terminal circuit is bigger than 80mv, thereby realizing effective recovery of the energy and improving recovering efficiency.
Description
Technical field
The utility model relates to energy recovery reutilization technology field, is specifically related to a kind of RF energy harvester.
Background technology
Nowadays, the electronic equipment of low-power consumption can be worked on microwatt power rank, as the wireless senser in Internet of Things, RF equipment, portable wearable Medical Devices, remote control equipment etc., the RF energy can gather from multiple source, as TV and Radio Service and radio station, mobile phone and base station, and the transmitter in unauthorized frequency range (comprising 915 MHz, 868 MHz or 2.4GHz), this makes RF be captured in worldwide all to have commercial viability.RF has many advantages than other energy sources.It is not subject to time restriction, does not need the environment that is exposed to high temperature or wind is arranged, and can in the scope of transmission sources, move freely.It is fully controlled, this means that energy can transmit continuously according to plan or demand.Can utilize the RF energy of rechargeable battery or super capacitor storage conversion, for peak times of power consumption.Therefore with the non-traditional power supply of different and traditional powered battery mode, for these power electronic equipment, be feasible, this is also the place of collection of energy.
The utility model content
The utility model purpose is to provide a kind of RF energy harvester, its reception by the radio wave signal in space also transforms storage, the gained energy is used further to the power supply of mini electrical equipment, thereby obtains the effective recycling of the energy, improves resource utilization.
In order to solve these problems of the prior art, the technical scheme that the utility model provides is:
A kind of RF energy harvester, described RF energy harvester comprises RF receiving terminal circuit, Minitype energy collector, the RF receiving terminal circuit comprises antenna end and voltage-multiplying circuit, Minitype energy collector comprises voltage up converting circuit and energy storage elements, for the antenna end that receives radio wave, with voltage-multiplying circuit, be connected, voltage-multiplying circuit is for improving the radio wave signal voltage that antenna end receives and this voltage being sent to Minitype energy collector, Minitype energy collector by voltage up converting circuit when voltage is greater than certain value to stored energy in energy storage elements.
For technique scheme, utility model people also has further optimization embodiment.
As optimization, described voltage-multiplying circuit comprises coupling transformer, capacitor C 1, diode D1, capacitor C 2, diode D2 and protective resistance R
lthe primary side of antenna end access coupling transformer; one end of the primary side of coupling transformer connects the negative pole of capacitor C 1; the positive pole of capacitor C 1 is connected with the negative pole of diode D1, the positive pole of diode D2 respectively; the other end of the positive pole access coupling transformer primary side of diode D1; the negative pole of diode D2 is connected with the positive pole of capacitor C 2, and the negative pole of capacitor C 2 is connected with the positive pole of diode D1, and protective resistance RL is in parallel with capacitor C 2.
Further, the radio wave that wireless side receives is AC signal, primary side at coupling transformer produces the alternating signal that voltage amplitude is Vm, when negative half period, be that coupling transformer primary side A is timing for negative, B, D1 conducting, D2 cut-off, electric current charges to capacitor C1 through D1, now D1 can regard short circuit as, and capacitor C1 is charged to Vm, when positive half cycle, be coupling transformer primary side A for just, B is when negative, D1 cut-off, D2 conducting, electric current charges to C2 through C1, D1, and the Vm that adds two depressor secondary sides due to the Vm of C1 makes c2 charge to peak 2Vm.
Further, because the energy of radio wave is very little, the sensitivity that height by extended antenna or the number of turn of coil receive to improve energy, also can utilize structure of building itself to be used as the reception antenna of radio wave, thereby improve the receiving efficiency of RF energy.
As optimization, miniature energy harvester carries out collection of energy constantly from the RF receiving terminal circuit, voltage up converting circuit in miniature energy harvester is started working when the output voltage of RF receiving terminal circuit is greater than 330mv, and to stored energy in energy storage elements, work along with the miniature energy harvester of energy, the output voltage of RF receiving terminal circuit constantly descends, when the output voltage of RF receiving terminal circuit drops to 80mv, the miniature energy harvester of energy quits work, then the output voltage of the RF receiving terminal circuit miniature energy harvester of energy when rising to 330mv that starts again to rise gradually works on, so circulation.
Further, described energy storage elements is preferably used ultracapacitor.
In addition, while adopting this energy harvester to be powered to load, by stored energy and case, provide stable operating current.
With respect to scheme of the prior art, the utility model has the advantages that:
The described RF energy harvester of the utility model, continue to receive the radio wave signal in space by the RF receiving terminal circuit, and by voltage-multiplying circuit, this signal voltage is carried out to multiplication of voltage, the miniature energy harvester of rear end carries out effectively constantly collection of energy again from the RF receiving terminal circuit, in the energy acquisition process, miniature energy harvester is started working when the output voltage of RF receiving terminal circuit is greater than 330mv, and continues stored energy in the energy storage devices such as ultracapacitor, lithium ion battery.Continuous firing when miniature energy harvester can be greater than 80mv at the output voltage of RF receiving terminal circuit, realize that Energy Efficient reclaims, and improves the rate of recovery.
In addition, because the source of Minitype energy collector extracting energy is fragmentary or time dependent, so Minitype energy collector needs energy storage elements (ultracapacitor) to carry out stored energy.Miniature energy harvester continuous collecting energy at ordinary times, when by electric loading, needing larger peak current, ultracapacitor will provide a comparatively constant electric current, and not be directed to energy collecting device.Thereby realize low power consuming devices is realized to uninterrupted power supply, can be because of the work that exhausts the equipment of impact of battery.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
The structure chart that Fig. 1 is RF receiving terminal circuit in the utility model embodiment;
The circuit structure diagram that Fig. 2 is Minitype energy collector in the utility model embodiment.
Embodiment
Below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiment are not limited to limit scope of the present utility model for the utility model is described.The implementation condition adopted in embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.
Embodiment:
The present embodiment has been described a kind of RF energy harvester, described RF energy harvester comprises the RF receiving terminal circuit, Minitype energy collector, RF receiving terminal circuit as shown in Figure 1 comprises antenna end and voltage-multiplying circuit, Minitype energy collector comprises voltage up converting circuit and energy storage elements, for the antenna end that receives radio wave, with voltage-multiplying circuit, be connected, voltage-multiplying circuit is for improving the radio wave signal voltage that antenna end receives and this voltage being sent to Minitype energy collector, Minitype energy collector as shown in Figure 2 by voltage up converting circuit when voltage is greater than certain value to stored energy in energy storage elements.
Described voltage-multiplying circuit comprises coupling transformer, capacitor C 1, diode D1, capacitor C 2, diode D2 and protective resistance R
lthe primary side of antenna end access coupling transformer; one end of the primary side of coupling transformer connects the negative pole of capacitor C 1; the positive pole of capacitor C 1 is connected with the negative pole of diode D1, the positive pole of diode D2 respectively; the other end of the positive pole access coupling transformer primary side of diode D1; the negative pole of diode D2 is connected with the positive pole of capacitor C 2, and the negative pole of capacitor C 2 is connected with the positive pole of diode D1, and protective resistance RL is in parallel with capacitor C 2.
The radio wave that wireless side receives is AC signal, primary side at coupling transformer produces the alternating signal that voltage amplitude is Vm, when negative half period, be that coupling transformer primary side A is timing for negative, B, D1 conducting, D2 cut-off, electric current charges to capacitor C1 through D1, now D1 can regard short circuit as, capacitor C1 is charged to Vm, when positive half cycle, coupling transformer primary side A for just, B when negative, D1 ends, the D2 conducting, electric current charges to C2 through C1, D1, and the Vm that adds two depressor secondary sides due to the Vm of C1 makes c2 charge to peak 2Vm.
Because the energy of radio wave is very little, the sensitivity that the height by extended antenna or the number of turn of coil receive to improve energy, also can utilize structure of building itself to be used as the reception antenna of radio wave, thereby improve the receiving efficiency of RF energy.
Miniature energy harvester carries out collection of energy constantly from the RF receiving terminal circuit, voltage up converting circuit in miniature energy harvester is started working when the output voltage of RF receiving terminal circuit is greater than 330mv, and to stored energy in energy storage elements, work along with the miniature energy harvester of energy, the output voltage of RF receiving terminal circuit constantly descends, when the output voltage of RF receiving terminal circuit drops to 80mv, the miniature energy harvester of energy quits work, then the output voltage of the RF receiving terminal circuit miniature energy harvester of energy when rising to 330mv that starts again to rise gradually works on, so circulation.
Described energy storage elements is preferably used ultracapacitor.
In addition, while adopting this energy harvester to be powered to load, by stored energy and case, provide stable operating current.
Above-mentioned example is only explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalent transformations of doing according to the utility model Spirit Essence or modification, within all should being encompassed in protection range of the present utility model.
Claims (7)
1. a RF energy harvester, it is characterized in that, described RF energy harvester comprises the RF receiving terminal circuit, Minitype energy collector, the RF receiving terminal circuit comprises antenna end and voltage-multiplying circuit, Minitype energy collector comprises voltage up converting circuit and energy storage elements, for the antenna end that receives radio wave, with voltage-multiplying circuit, be connected, voltage-multiplying circuit is for improving the radio wave signal voltage that antenna end receives and this voltage being sent to Minitype energy collector, Minitype energy collector by voltage up converting circuit when voltage is greater than certain value to stored energy in energy storage elements.
2. a kind of RF energy harvester according to claim 1, it is characterized in that, described voltage-multiplying circuit comprises coupling transformer, capacitor C 1, diode D1, capacitor C 2, diode D2 and protective resistance RL, the primary side of antenna end access coupling transformer, one end of the primary side of coupling transformer connects the negative pole of capacitor C 1, the positive pole of capacitor C 1 respectively with the negative pole of diode D1, the positive pole of diode D2 is connected, the other end of the positive pole access coupling transformer primary side of diode D1, the negative pole of diode D2 is connected with the positive pole of capacitor C 2, the negative pole of capacitor C 2 is connected with the positive pole of diode D1, protective resistance RL is in parallel with capacitor C 2.
3. a kind of RF energy harvester according to claim 2, it is characterized in that, the radio wave that wireless side receives is AC signal, produces in the primary side of coupling transformer the alternating signal that voltage amplitude is Vm, when negative half period, be that coupling transformer primary side A is timing for negative, B, D1 conducting, D2 cut-off, electric current is through D1 to capacitor C1 charging, and now D1 can regard short circuit as, capacitor C1 is charged to Vm
When positive half cycle, coupling transformer primary side A for just, B when negative, D1 cut-off, D2 conducting, electric current charges to C2 through C1, D1, the Vm that adds pair depressor secondary sides due to the Vm of C1 makes c2 charge to peak 2Vm.
4. according to claim 1 or 2 or 3 described a kind of RF energy harvesters, it is characterized in that, because the energy of radio wave is very little, the sensitivity that height by extended antenna or the number of turn of coil receive to improve energy, also can utilize the structure of building own to be used as the reception antenna of radio wave, thereby improve the receiving efficiency of RF energy.
5. a kind of RF energy harvester according to claim 1, it is characterized in that, miniature energy harvester carries out collection of energy constantly from the RF receiving terminal circuit, voltage up converting circuit in miniature energy harvester is started working when the output voltage of RF receiving terminal circuit is greater than 330mv, and to stored energy in energy storage elements, work along with the miniature energy harvester of energy, the output voltage of RF receiving terminal circuit constantly descends, when the output voltage of RF receiving terminal circuit drops to 80mv, the miniature energy harvester of energy quits work, then the output voltage of the RF receiving terminal circuit miniature energy harvester of energy when rising to 330mv that starts again to rise gradually works on, so circulation.
6. a kind of RF energy harvester according to claim 1 or 5, is characterized in that, described energy storage elements is preferably used ultracapacitor.
7. a kind of RF energy harvester according to claim 1, is characterized in that, while adopting this energy harvester to be powered to load, by energy storage elements, provides stable operating current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203381311U CN203339814U (en) | 2013-06-13 | 2013-06-13 | RF energy collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203381311U CN203339814U (en) | 2013-06-13 | 2013-06-13 | RF energy collector |
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| CN203339814U true CN203339814U (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203381311U Expired - Fee Related CN203339814U (en) | 2013-06-13 | 2013-06-13 | RF energy collector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312042A (en) * | 2013-06-13 | 2013-09-18 | 中傲智能科技（苏州）有限公司 | RF (radio frequency) energy collector |
| CN114977816A (en) * | 2022-04-26 | 2022-08-30 | 西安交通大学 | High voltage DC circuit topology |
-
2013
- 2013-06-13 CN CN2013203381311U patent/CN203339814U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312042A (en) * | 2013-06-13 | 2013-09-18 | 中傲智能科技（苏州）有限公司 | RF (radio frequency) energy collector |
| CN103312042B (en) * | 2013-06-13 | 2016-02-17 | 中傲智能科技（苏州）有限公司 | A kind of RF energy harvester |
| CN114977816A (en) * | 2022-04-26 | 2022-08-30 | 西安交通大学 | High voltage DC circuit topology |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20190613 |