CN103812226A - Radio frequency energy collecting device applied to wireless mobile terminal - Google Patents
Radio frequency energy collecting device applied to wireless mobile terminal Download PDFInfo
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- CN103812226A CN103812226A CN201210457237.3A CN201210457237A CN103812226A CN 103812226 A CN103812226 A CN 103812226A CN 201210457237 A CN201210457237 A CN 201210457237A CN 103812226 A CN103812226 A CN 103812226A
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Abstract
The invention provides a radio frequency energy collecting device applied to a wireless mobile terminal. The radio frequency energy collecting device applied to the wireless mobile terminal is provided with a wireless energy collecting system which is formed by a receiving antenna module, a boosting module and a pressure stabilizing charging module. According to the radio frequency energy collecting device applied to the wireless mobile terminal, the radio frequency energy of external environment is obtained due to the design of an efficient micro-strip antenna, a battery is charged through the boosting module, the pressure stabilizing module, the charging module and the like, and the radio frequency energy is conversed into power sources for utilization of electrical equipment. The radio frequency energy collecting device applied to the wireless mobile terminal has the advantages of being compact in size, convenient to install, capable of being used in wireless mobile terminals such as a mobile phone, effectively utilizing the radio frequency energy of the peripheral environment and improving the energy using efficiency.
Description
Technical field
The present invention relates to a kind of radio-frequency (RF) energy Cai Ji Installed that is applied to mobile radio terminal puts Gai Installed of ， and puts and be specially adapted to portable mobile wireless mobile terminal.
Background technology
Energy acquisition refers to by micro-energy such as heat, vibration, light and electromagnetic waves in " collection " surrounding environment, makes its technology that converts electric power to, to reach energy-saving and cost-reducing object.In the modern life, our surrounding is flooded with FM, AM broadcast, and the radiofrequency signal such as hand base machine station, TV, by obtaining these RF energy, can convert it into power supply for us.This type of technology has three kinds to realize means conventionally: induction, magnetic resonance type and RF-type.The first two is planted technology maturation, is easy to realize, but operating distance is nearer; RF-type can be collected the energy that longer-distance radio frequency source sends, and uses the equipment of RF collecting energy not limited by place, can be in the lower work of multiple frequency range (comprising 915 MHz, 868 MHz or 2.4GHz etc.).STMicw Electronics, your top grade of Ling Li have been released M24LR16E, MAX17710 at present, LTC3588 homenergic is collected chip, but radio-frequency (RF) energy acquisition applications is actually rare in the document of portable mobile wireless mobile terminal, the device of the present invention's research can be arranged on mobile terminal, in the time there is no civil power, also can play the effect of electric energy supplement.
Summary of the invention
For the deficiencies in the prior art part, the invention provides a kind of radio-frequency (RF) energy harvester that is applied to mobile radio terminal.This device volume is small and exquisite, easy for installation, can effectively utilize the radio-frequency (RF) energy of surrounding environment, improves energy service efficiency.
For achieving the above object, technical solution of the present invention is:
The radio-frequency (RF) energy harvester that is applied to mobile radio terminal, is characterized in that: this device is made up of following three modules, and wherein, described reception antenna module gathers extraneous small-signal by antenna, and is connected to a boost module; The signal input part of described boost module connects reception antenna module, and its signal output part connects a voltage stabilizing charging module, and the small-signal of antenna reception is boosted; The input of described voltage stabilizing charging module connects boost module, and the voltage after boosting is carried out to rectification after voltage stabilizing, and its output connects electric energy storage device.
Further, described reception antenna module includes the antenna body, impedance transformer, 50 ohmages and the feeder line port that are arranged on medium substrate; Antenna body connects after impedance transformer, connects feeder line port by 50 ohmages; Feeder line port connects the signal input part of boost module.
Further, described boost module includes the first capacitance group and the second capacitance group between signal input part and the signal output part that is connected to this boost module, the first capacitance group and the second capacitance group form by plural capacitor cell serial connection, and the first capacitance group is identical with the corresponding setting of capacitor cell and number in the second capacitance group; Each capacitor cell in the first capacitance group is connected with the negative pole of first diode in one end of adjacent signal input, and the other end is connected with the positive pole of second diode; Wherein, the positive pole of the first diode connects the negative pole of the second diode, and the negative pole of the positive pole of the first diode and the second diode is connected capacitor cell corresponding in the second capacitance group simultaneously.
The usefulness of technique scheme is:
The present invention is by efficient Antenna Design and boost, the processing such as voltage stabilizing, can collect by passive mode the faint radio-frequency (RF) energy of external environment, and convert it into power supply device equipment and use.
The present invention adopts efficient microstrip antenna designs, volume is small-sized, be easy to be installed on existing mobile radio terminal, and cover multiple frequency ranges, consider that antenna is with the matching problem of boost module, few off-energy of trying one's best, obtains the radio-frequency (RF) energy of external environment, consider frequency range, gain and directive property, improve receiving efficiency.
Boost module of the present invention, adopts the HF schottky pipe of low-power consumption to become the core of capacitance charge pump, and it can receive fainter signal and make it conducting, then gives capacitor charging, and energy is put aside in electric capacity, supplies with the application of rear class power consumption equipment.Can reduce its cut-in voltage as far as possible, consider trading off between voltage rising and drive current.The voltage signal receiving can be boosted to the required voltage of power consumption equipment, can meet again the requirement of the drive current of rear class.
Voltage stabilizing charging module of the present invention can improve its power management capabilities as far as possible, for the electrical storage device of rear class provides stable voltage, and can play certain protective effect, in order to avoid damage electrical storage device.
In sum, what design performance of the present invention was good boost, voltage stabilizing circuit, can effectively affect as small as possible under mobile radio terminal mobile radio terminal structure situation, realize mobile radio terminal charging, extend the service time of mobile radio terminal battery.
Accompanying drawing explanation
Fig. 1 is operation principle block diagram of the present invention;
Fig. 2 is microstrip antenna structure schematic diagram of the present invention;
Fig. 3 is the three-dimensional gain direction schematic diagram of microstrip antenna of the present invention;
Fig. 4 is the Smith circle schematic diagram of reception antenna module return loss of the present invention;
Fig. 5 is boost module schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
The radio-frequency (RF) energy harvester that is applied to mobile radio terminal as shown in Figure 1, this device is the wireless energy gathering system being connected to form by a reception antenna module, boost module and voltage stabilizing charging module.Suppose that frequency range is GSM mobile handset frequency range, this system receives RF signal that launch GSM mobile handset base station and mobile phone itself and the transmitting of other mobile phone by the microstrip antenna of reception antenna module, boost through the N rank capacitance charge pump of boost module again, when voltage reaches after mobile phone supply power voltage (as 3.7 volts), pass through again voltage stabilizing charging module, rear class electric energy storage device (as battery) is charged.Specific design is as follows:
Reception antenna module as shown in Figure 2, it includes the antenna body 2, impedance transformer 3,50 ohmages 4 and the feeder line port 5 that are arranged on medium substrate 1.Antenna body 2 connects after impedance transformer 3, connects feeder line port 5 by 50 ohmages 4, and this feeder line port 5 connects the signal input part of boost module.
Gather extraneous small-signal by antenna body 2, mate with 50 ohmages 4 through impedance transformer 3, be connected with peripheral circuit through feeder line port 5 again, when design, first will consider the material of medium substrate 1, length and the width of antenna body 2 and impedance transformer 3 is set according to reception frequency range.As shown in Figure 3,4, adopt medium substrate parameter: Er/h=2.65/1.5m, loss angle tangent: 0.02; Antenna body parameter: antenna body size: length L 0=94.5mm, width W 0=123.4mm; 1/4 λ impedance transformer: length L 1=5mm, width W 1=2mm; 50 ohmages: length L 2=45mm, width W 2=4.09mm.By the design of antenna and match circuit, guarantee the receiving efficiency of RF signal.
The present invention adopts efficient microstrip antenna designs, and volume is small-sized, easy for installation, and cover multiple frequency ranges, consider the matching problem of antenna with boost module, few off-energy of trying one's best, obtain the radio-frequency (RF) energy of external environment, consider frequency range, gain and directive property, improve receiving efficiency.
Boost module as shown in Figure 5, its signal input part connects reception antenna module feeder line port, and its signal output part connects a voltage stabilizing charging module, and the small-signal of antenna reception is boosted.This boost module includes the first capacitance group and the second capacitance group that are connected between signal input part and signal output part, the first capacitance group and the second capacitance group form by plural capacitor cell serial connection, and the first capacitance group is identical with the corresponding setting of capacitor cell and number in the second capacitance group; Each capacitor cell in the first capacitance group is connected with the negative pole of one first diode in one end of adjacent signal input, and the other end is connected with the positive pole of one second diode; Wherein, the positive pole of the first diode connects the negative pole of the second diode, and the negative pole of the positive pole of the first diode and the second diode is connected capacitor cell corresponding in the second capacitance group simultaneously.Concrete, the positive pole of the capacitor cell in the second capacitance group and the first diode and the negative pole link of the second diode are one end of contiguous this boost module signal output part.Specific design is as follows:
Boost module of the present invention is to adopt charge pump circuit to realize to boost, that a kind of capacitance charge build-up effect of applying produces the circuit higher than supply voltage or negative voltage, it forms simple circuit by electric capacity and diode, instantiation mode of the present invention as shown in Figure 5, wherein C1-C5, C11 connects, C6-C11, C13 connects, D1, D3, D5, D7, D9, D11 positive pole respectively with D2, D4, D6, D8, D10, D12 negative pole and C6, C7, C8, C9, C10, one end of C13 is connected, D1, D3, D5, D7, D9, D11 negative pole respectively with D2, D4, D6, D8, D10, D12 positive pole and C1, C2, C3, C4, C5, the other end of C11 is connected.Under ideal state, when rf wave negative half period, diode D1 conducting, capacitor C 6 is charged, when positive half cycle, diode D2 conducting, voltage in capacitor C 6 is added in capacitor C 1, and C1 is charged, at this moment, the voltage in capacitor C 1 is approximately the conducting voltage that the twice of radio frequency source crest voltage deducts diode.In like manner, diode D3, D4, respectively in positive-negative half-cycle conducting, charge to capacitor C 7, C2, and last output voltage is the voltage that the voltage on C2 adds C1, has so just reached the object of boosting.Wherein A, B is signal input part, C, D are signal output part, by exponent number reasonable in design, to guarantee the effect of boosting.What in design, use is 470pF patch capacitor, and diode uses Schottky diode HSMS-2862.
Boost module of the present invention adopts the HF schottky pipe of low-power consumption to become the core of capacitance charge pump, and it can receive fainter signal and make it conducting, then gives capacitor charging, and energy is put aside in electric capacity, supplies with the application of rear class power consumption equipment.Can reduce its cut-in voltage as far as possible, consider trading off between voltage rising and drive current.The voltage signal receiving can be boosted to the required voltage of power consumption equipment, can meet again the requirement of the drive current of rear class.
The input of described voltage stabilizing charging module connects boost module, and the voltage after boosting is carried out to rectification after voltage stabilizing, and its output connects electric energy storage device.Voltage stabilizing charging module can improve its power management capabilities as far as possible, for the electrical storage device of rear class provides stable voltage, and can play certain protective effect, in order to avoid damage electrical storage device.For the design of voltage stabilizing charging system of the present invention, can consider to utilize special voltage stabilizing IC, to guarantee providing more stable voltage to final stage electrical storage device.
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought proposing according to the present invention, and any change of doing on technical scheme basis, within all falling into protection range of the present invention.
Claims (3)
1. the radio-frequency (RF) energy harvester that is applied to mobile radio terminal, is characterized in that: this device is made up of following three modules:
One reception antenna module, gathers extraneous small-signal by antenna, and is connected to a boost module;
One boost module, its signal input part connects reception antenna module, and its signal output part connects a voltage stabilizing charging module, and the small-signal of antenna reception is boosted;
One voltage stabilizing charging module, its input connects boost module, and the voltage after boosting is carried out to rectification after voltage stabilizing, and its output connects electric energy storage device.
2. the radio-frequency (RF) energy harvester that is applied to mobile radio terminal as claimed in claim 1, is characterized in that: described reception antenna module includes the antenna body, impedance transformer, 50 ohmages and the feeder line port that are arranged on medium substrate; Antenna body connects after impedance transformer, connects feeder line port by 50 ohmages; Feeder line port connects the signal input part of boost module.
3. the radio-frequency (RF) energy harvester that is applied to mobile radio terminal as claimed in claim 1 or 2, it is characterized in that: described boost module includes the first capacitance group and the second capacitance group between signal input part and the signal output part that is connected to this boost module, the first capacitance group and the second capacitance group form by plural capacitor cell serial connection, and the first capacitance group is identical with the corresponding setting of capacitor cell and number in the second capacitance group; Each capacitor cell in the first capacitance group is connected with the negative pole of one first diode in one end of adjacent signal input, and the other end is connected with the positive pole of one second diode; Wherein, the positive pole of the first diode connects the negative pole of the second diode, and the negative pole of the positive pole of the first diode and the second diode is connected capacitor cell corresponding in the second capacitance group simultaneously.
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Cited By (11)
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| CN104198080A (en) * | 2014-09-18 | 2014-12-10 | 中国电子科技集团公司第二十六研究所 | Oscillatory temperature sensor powered by RF (radio frequency) signals |
| CN104301946A (en) * | 2014-10-23 | 2015-01-21 | 南京大学 | Wireless energy and data combined transmission method |
| CN105305663A (en) * | 2015-10-22 | 2016-02-03 | 江苏科技大学 | Multi-antenna high-efficiency radio frequency energy collector formed by multiple electrodes |
| CN106410983A (en) * | 2016-10-26 | 2017-02-15 | 太原理工大学 | Radio frequency energy acquisition system based on planar inverted-F antenna |
| CN106452117A (en) * | 2016-12-08 | 2017-02-22 | 重庆邮电大学 | Broadband rectifier for radio frequency energy collecting system |
| CN106469936A (en) * | 2015-08-21 | 2017-03-01 | 中兴通讯股份有限公司 | The charging method of terminal and device |
| CN106775422A (en) * | 2015-11-09 | 2017-05-31 | 贝克顿·迪金森公司 | For user mutual point from the played back static state and system, the device and method of dynamic content using the energy from ambient radio-frequency communication collection |
| CN107886604A (en) * | 2017-10-31 | 2018-04-06 | 美的智慧家居科技有限公司 | Door lock charging method, door-locking system and computer-readable recording medium |
| CN107895842A (en) * | 2017-10-18 | 2018-04-10 | 江苏大学 | A kind of clock apparatus of radio-frequency electromagnetic wave energy power supply |
| CN108964292A (en) * | 2017-05-17 | 2018-12-07 | 富泰华工业（深圳）有限公司 | Electronic device |
| CN110829553A (en) * | 2019-11-11 | 2020-02-21 | 上海博昂电气有限公司 | Passive long-distance wireless charging system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198080A (en) * | 2014-09-18 | 2014-12-10 | 中国电子科技集团公司第二十六研究所 | Oscillatory temperature sensor powered by RF (radio frequency) signals |
| CN104301946A (en) * | 2014-10-23 | 2015-01-21 | 南京大学 | Wireless energy and data combined transmission method |
| CN106469936A (en) * | 2015-08-21 | 2017-03-01 | 中兴通讯股份有限公司 | The charging method of terminal and device |
| CN105305663A (en) * | 2015-10-22 | 2016-02-03 | 江苏科技大学 | Multi-antenna high-efficiency radio frequency energy collector formed by multiple electrodes |
| CN106775422A (en) * | 2015-11-09 | 2017-05-31 | 贝克顿·迪金森公司 | For user mutual point from the played back static state and system, the device and method of dynamic content using the energy from ambient radio-frequency communication collection |
| US11380230B2 (en) | 2015-11-09 | 2022-07-05 | Becton, Dickinson And Company | Point of use interaction playback device employing energy harvesting from ambient radio frequency communications |
| CN106410983A (en) * | 2016-10-26 | 2017-02-15 | 太原理工大学 | Radio frequency energy acquisition system based on planar inverted-F antenna |
| CN106452117A (en) * | 2016-12-08 | 2017-02-22 | 重庆邮电大学 | Broadband rectifier for radio frequency energy collecting system |
| CN108964292A (en) * | 2017-05-17 | 2018-12-07 | 富泰华工业（深圳）有限公司 | Electronic device |
| CN107895842A (en) * | 2017-10-18 | 2018-04-10 | 江苏大学 | A kind of clock apparatus of radio-frequency electromagnetic wave energy power supply |
| CN107886604A (en) * | 2017-10-31 | 2018-04-06 | 美的智慧家居科技有限公司 | Door lock charging method, door-locking system and computer-readable recording medium |
| CN110829553A (en) * | 2019-11-11 | 2020-02-21 | 上海博昂电气有限公司 | Passive long-distance wireless charging system |
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Application publication date: 20140521 |