CN104539028A - Electromagnetic field energy collection device and communication device - Google Patents
Electromagnetic field energy collection device and communication device Download PDFInfo
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- CN104539028A CN104539028A CN201410637470.9A CN201410637470A CN104539028A CN 104539028 A CN104539028 A CN 104539028A CN 201410637470 A CN201410637470 A CN 201410637470A CN 104539028 A CN104539028 A CN 104539028A
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- 230000005672 electromagnetic field Effects 0.000 title claims abstract description 113
- 238000004891 communication Methods 0.000 title claims abstract description 22
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Abstract
The invention discloses an electromagnetic field energy collection device. The electromagnetic field energy collection device comprises a coupler, an isolator, a rectifier unit and an energy storage unit which are connected in sequence, wherein the coupler is used for receiving an electromagnetic field signal and converting the electromagnetic field signal into a circuit signal; the isolator is used for transmitting the circuit signal to the rectifier unit and preventing an interference signal from the rectifier unit from being transmitted to the coupler; the rectifier unit is used for converting the circuit signal into a direct current signal serving as direct current energy; and the energy storage unit is used for storing the direct current energy output by the rectifier unit and outputting the direct current energy. According to the electromagnetic field energy collection device, the isolator is arranged, and noise generated by a circuit behind the isolator is isolated from the isolator, so that noise from a subsequent circuit, such as a rectifier cannot be radiated out through the coupler; interference on a nearby communication antenna is avoided; and the performance of a communication system is ensured. The invention further discloses a communication device.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of can absorption from communication antenna periphery obtains the energy of electromagnetic field harvester of energy of electromagnetic field and a kind of communicator.
Background technology
The application scenarios of the sensing equipment of low power dissipation electron equipment, low-power consumption widely, does not have power line to power to it in a lot of occasion, or adopts power line to power inconvenience, therefore adopts powered battery to be conventional method.But more favorably mode obtains energy from from surrounding environment.Adopting photovoltaic cell to be electric energy by transform light energy, vibrations mechanical energy is converted to electric energy is study more mode.Energy of electromagnetic field in environment being converted to utilizable electric energy is also a kind of method, but difficulty is that in surroundings, energy density of electromagnetic field is very low, is difficult to obtain electric energy that is enough, that continue.
In recent years along with the development of technology, the electricity energy harvester that prior art is developed such as can in the weak signal situation of-20dBm, and conversion acquisition electric energy is enough to support microprocessor and normally works.
But above-mentioned electricity energy harvester, only considers that it is inadequate for how obtaining electric energy down by force in feeble field.Because the radiofrequency signal of input is being converted in the process of direct current signal by above-mentioned electricity energy harvester, inevitably producing other frequency signals being different from frequency input signal.In fact these other frequency signals easily can cause noise jamming for communication system.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, the present invention needs to provide a kind of energy of electromagnetic field harvester and a kind of communicator.
A kind of energy of electromagnetic field harvester, comprise the coupler connected successively, isolator, rectifier unit and energy-storage units, this coupler is for receiving electromagnetic field signal and this electromagnetic field signal being converted to circuit signal, this isolator is used for this circuit signal being transferred to this rectifier unit and being used for stoping the interference signal from this rectifier unit to be transferred to this coupler, this rectifier unit is used for the direct current signal be converted to by this circuit signal as DC energy, this energy-storage units for store this rectifier unit export this DC energy and for exporting this DC energy.
Above-mentioned energy of electromagnetic field harvester, by arranging isolator, the noise produce the circuit after isolator and coupler are isolated, make from subsequent conditioning circuit, noise as rectifier cannot be radiate by coupler, avoid and interference is caused to communication antenna nearby, and then ensure that the performance of communication system.
Wherein in an execution mode, the input port of this isolator connects the output of this coupler, and the output port of this isolator connects this rectifier unit.
Wherein in an execution mode, this rectifier unit is bridge rectifier, first port of this rectifier unit connects the output port of this isolator, second port of this rectifier unit connects one end of this energy-storage units, 3rd port of this rectifier unit connects the other end of this energy-storage units, and the 4th port of this rectifier unit connects the output port of this isolator.
Wherein in an execution mode, this energy of electromagnetic field harvester also comprises the first filter and the second filter, and this coupler, this first filter, this isolator, this second filter, this rectifier unit and this energy-storage units connect successively.
Wherein in an execution mode, this energy of electromagnetic field harvester also comprises the first filter and the second filter, and this coupler, this isolator, this first filter, this second filter, this rectifier unit and this energy-storage units connect successively.
Wherein in an execution mode, this energy of electromagnetic field harvester also comprises the first filter and the second filter, and this coupler, this first filter, this second filter, this isolator, this rectifier unit and this energy-storage units connect successively.
Wherein in an execution mode, this isolator comprises the first isolator and the second isolator, this energy of electromagnetic field harvester also comprises filter, and this coupler, this first isolator, this second isolator, this filter, this rectifier unit and this energy-storage units connect successively.
Wherein in an execution mode, this rectifier unit is voltage multiplier, first port of this rectifier unit connects the output port of this isolator, second port of this rectifier unit connects one end of this energy-storage units, 3rd port of this rectifier unit connects the other end of this energy-storage units, and the 4th port of this rectifier unit connects the output port of this isolator.
A kind of communicator, comprise communication antenna and energy of electromagnetic field harvester, this energy of electromagnetic field harvester comprises the coupler connected successively, isolator, rectifier unit and energy-storage units, this coupler is for receiving the electromagnetic field signal of this communication antenna radiation and this electromagnetic field signal being converted to circuit signal, this isolator is used for this circuit signal being transferred to this rectifier unit and being used for stoping the interference signal from this rectifier unit to be transferred to this coupler, this rectifier unit is used for the direct current signal be converted to by this circuit signal as DC energy, this energy-storage units for store this rectifier unit export this DC energy and for exporting this DC energy.
Wherein in an execution mode, this communication antenna comprises Antenna baseplate, antenna casing, antenna feed cable and antenna radiating element, this Antenna baseplate is connected jointly to form receiving space with this antenna casing, this antenna radiating element is positioned at this receiving space, this antenna feed cable wears this Antenna baseplate and is connected with this antenna radiating element, this energy of electromagnetic field harvester is fixed in this receiving space, or this energy of electromagnetic field harvester is fixed on the outside of this antenna casing, or this energy of electromagnetic field harvester is apart from this antenna casing certain distance.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of execution mode, wherein:
Fig. 1 is the circuit diagram of the energy of electromagnetic field harvester of first embodiment of the invention.
Fig. 2 is the partial circuit schematic diagram of the energy of electromagnetic field harvester of second embodiment of the invention.
Fig. 3 is the partial circuit schematic diagram of the energy of electromagnetic field harvester of third embodiment of the invention.
Fig. 4 is the partial circuit schematic diagram of the energy of electromagnetic field harvester of four embodiment of the invention.
Fig. 5 is the partial circuit schematic diagram of the energy of electromagnetic field harvester of fifth embodiment of the invention.
Fig. 6 is the partial circuit schematic diagram of the energy of electromagnetic field harvester of sixth embodiment of the invention.
Fig. 7 is the partial circuit schematic diagram of the energy of electromagnetic field harvester of seventh embodiment of the invention.
Fig. 8 is the partial circuit schematic diagram of the energy of electromagnetic field harvester of eighth embodiment of the invention.
Fig. 9 is the module diagram of the communicator of ninth embodiment of the invention.
Embodiment
Be described below in detail embodiments of the present invention, the example of described execution mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the execution mode be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as that instruction or hint relative importance or hidden conjunction indicate the quantity of indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or hidden conjunction comprise one or more described features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrically connected or can intercom mutually; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Disclosing hereafter provides many different execution modes or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or reference letter, this repetition is to simplify and clearly object, itself does not indicate discussed various execution mode and/or relation between setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the application of other techniques and/or the use of other materials.
Refer to Fig. 1, the energy of electromagnetic field harvester 10 of first embodiment of the invention comprises the coupler 102, isolator 104, rectifier unit 106 and the energy-storage units 108 that connect successively.
This coupler 102, for receiving electromagnetic field signal and this electromagnetic field signal being converted to circuit signal, namely receives the electromagnetic field radiofrequency signal of institute's placement location surrounding enviroment.Coupler 102 can be seen as a reception antenna, and its working frequency range should contain the frequency range that it intends the radiofrequency signal received.This coupler 102 comprises output 112 and earth connection 113.
This isolator 104 is for transferring to this rectifier unit 106 and being used for stoping the interference signal from this rectifier unit 106 to be transferred to this coupler 102 by this circuit signal.This isolator 104 makes from radiofrequency signal from coupler 102 to the transmission of rectifier unit 106 direction easily, but high to the transfer impedance in coupler 102 direction from rectifier unit 106, stop radio signal transmission from from rectifier unit 106 to coupler 102 direction.Radiofrequency signal from from rectifier unit 106 to coupler 102 direction can be considered a kind of interference signal to the electromagnetic field received, the noise that can produce this electromagnetic field.The said interference signal from this rectifier unit 106 of the present embodiment comprises interference signal that rectifier unit 106 self produces and the interference signal that follow-up other circuit of rectifier unit 106 produce.
In the present embodiment, the input port 110 of this isolator 104 connects the output 112 of this coupler 102, and the output port 114 of this isolator 104 connects this rectifier unit 106.Isolator is non-reciprocal devices.Such as: from input port 110 input signal, signal can only export from output port 114.Adopt the isolator 104 of this structure, structure is simple, and function is easy to realize, and cost is low.
This rectifier unit 106 is for being converted to the direct current signal as DC energy using this circuit signal.Radio-frequency alternating current signal, by circuit signal, is generally converted to low-frequency d signal by rectifier unit 106.
In the present embodiment, this rectifier unit 106 is bridge rectifier.First port 118 of this rectifier unit 106 connects the output port 114 of this isolator 104, particularly, connect the holding wire 115 of the output port 114 of this isolator 104, second port one 20 of this rectifier unit 106 connects one end of this energy-storage units 108,3rd port one 22 of this rectifier unit 106 connects the other end of this energy-storage units 108,4th port one 24 of this rectifier unit 106 connects the output port 114 of this isolator 104, particularly, the earth connection 116 of the output port 114 of this isolator 104 is connected.Therefore, if there is interference signal to input to the output port 114 of isolator 104 from this rectifier unit 106, this interference signal can not export from the input port 110 of isolator 104, and interference signal outwards cannot be radiate by coupler 102.Adopt the rectifier unit 106 of this structure, structure is simple, and function is easy to realize, and cost is low.
This energy-storage units 108 for store this rectifier unit 106 export this DC energy and for exporting this DC energy.Energy-storage units 108 can to other circuit supplies (comprising detecting unit, transmitter unit etc.).Energy-storage units 108 can adopt the energy-storage units such as bulky capacitor rechargeable battery.
In sum, above-mentioned energy of electromagnetic field harvester 10, by arranging isolator 104, the noise produce the circuit after isolator 104 and coupler 102 are isolated, noise from rectifier unit 106 cannot be radiate by coupler 102, avoid and interference is caused to communication antenna nearby, and then ensure that the performance of communication system.
Please refer to the drawing 2, second embodiment of the invention provides a kind of energy of electromagnetic field harvester 20.Energy of electromagnetic field harvester 20 structure of present embodiment is substantially identical with energy of electromagnetic field harvester 10 structure of the first execution mode, and its difference is: the energy of electromagnetic field harvester 20 of present embodiment also comprises the first filter 202 and the second filter 204.
Coupler 206, first filter 202, isolator 208, second filter 204, rectifier unit (diagram is not) and energy-storage units (diagram is not) connect successively.
Particularly, the first filter 202 comprises the first inductance 210 and the first electric capacity 212.First inductance 210 is connected between the output 214 of coupler 206 and the input port 216 of isolator 208, and one end of the first electric capacity 212 is connected between this first inductance 210 and input port 216 of isolator 208, the other end ground connection of the first electric capacity 212.Earth connection 218 ground connection of isolator 208.Earth connection 215 ground connection of coupler 206.
Second filter 204 comprises the second inductance 220, second electric capacity 222 and the 3rd electric capacity 224, second inductance 220 is connected between the holding wire 226 of the output port of isolator 208 and the first port of this rectifier.One end of second electric capacity 222 is connected between the holding wire 226 of the output port of this second inductance 220 and isolator 208, the other end ground connection of the second electric capacity 222.One end of 3rd electric capacity 224 is connected between the second inductance 220 and the first port of rectifier unit, the other end ground connection of the 3rd electric capacity 224.4th port ground connection of rectifier unit.
Therefore, the noise that above-mentioned energy of electromagnetic field harvester 20 can suppress electricity energy harvester to produce better transmits to coupler 206.
Please refer to the drawing 3, third embodiment of the invention provides a kind of energy of electromagnetic field harvester 30.Energy of electromagnetic field harvester 30 structure of present embodiment is substantially identical with energy of electromagnetic field harvester 10 structure of the first execution mode, and its difference is: the energy of electromagnetic field harvester 30 of present embodiment also comprises the first filter 302 and the second filter 304.
Coupler 306, first filter 302, isolator 308, second filter 304, rectifier unit (diagram is not) and energy-storage units (diagram is not) connect successively.
Particularly, the first filter 302 comprises the first inductance 310, first electric capacity 312 and the second electric capacity 314, first inductance 310 is connected between the input port 316 of isolator 308 and the output 318 of coupler 306.One end of first electric capacity 312 is connected between the output 318 of coupler 306 and this first inductance 310, the other end ground connection of the first electric capacity 312.One end of second electric capacity 314 is connected between the first inductance 310 and the input port 316 of isolator 308, the other end ground connection of the second electric capacity 314.The earth connection 320 of the output port of isolator 308 and the earth connection 319 of coupler 306 all ground connection.
Second filter 304 comprises the second inductance 322 and the 3rd electric capacity 324.Second inductance 322 is connected between the holding wire 326 of the output port of isolator 308 and the first port of rectifier unit, one end of 3rd electric capacity 324 is connected between this first inductance 310 and first port of rectifier unit, the other end ground connection of the 3rd electric capacity 324.4th port ground connection of rectifier unit.
Therefore, the noise that above-mentioned energy of electromagnetic field harvester 30 can suppress electricity energy harvester to produce better transmits to coupler 306.
Please refer to the drawing 4, four embodiment of the invention provides a kind of energy of electromagnetic field harvester 40.Energy of electromagnetic field harvester 40 structure of present embodiment is substantially identical with energy of electromagnetic field harvester 10 structure of the first execution mode, and its difference is: the energy of electromagnetic field harvester 40 of present embodiment also comprises the first filter 402 and the second filter 404.
Coupler 406, isolator 408, first filter 402, second filter 404, rectifier unit (not shown) and energy-storage units (not shown) connect successively.
Particularly, earth connection 410 ground connection of the output port of isolator 408.
First filter 402 comprises the first inductance 412, first electric capacity 414 and the second electric capacity 416, second filter 404 comprises the second inductance 418 and the 3rd electric capacity 420.
Between the holding wire 422 that first inductance 412 is connected to the output port of isolator 408 and the second inductance 418, one end of first electric capacity 414 is connected between the holding wire 422 of the output port of isolator 408 and the first inductance 412, the other end ground connection of the first electric capacity 414.One end of second electric capacity 416 is connected between the first inductance 412 and the second inductance 418, the other end ground connection of the second electric capacity 416.
Second inductance 418 is connected between the first inductance 412 and the first port of this rectifier unit.One end of 3rd electric capacity 420 is connected between this second inductance 418 and first port of rectifier unit, the other end ground connection of the 3rd electric capacity 420.4th port ground connection of rectifier unit.The output 426 of the input port 424 butt coupling device 406 of isolator 408.Earth connection 427 ground connection of coupler 406.
Therefore, the noise that above-mentioned energy of electromagnetic field harvester 40 can suppress electricity energy harvester to produce better transmits to coupler 406.
Please refer to the drawing 5, fifth embodiment of the invention provides a kind of energy of electromagnetic field harvester 50.Energy of electromagnetic field harvester 50 structure of present embodiment is substantially identical with energy of electromagnetic field harvester 10 structure of the first execution mode, and its difference is: the energy of electromagnetic field harvester 50 of present embodiment also comprises the first filter 502 and the second filter 504.
Coupler 506, first filter 502, second filter 504, isolator 508, rectifier unit (not shown) and energy-storage units (not shown) connect successively.
Particularly, the first filter 502 comprises the first inductance 510, first electric capacity 512 and the second electric capacity 514, second filter 504 comprises the second inductance 516 and the 3rd electric capacity 518.
Between the output 520 that first inductance 510 is connected to coupler 506 and the second inductance 516, one end of the first electric capacity 512 is connected between the output 520 of coupler 506 and the first inductance 510, the other end ground connection of the first electric capacity 512.One end of second electric capacity 514 is connected between the first inductance 510 and the second inductance 516, the other end ground connection of the second electric capacity 514.
Second inductance 516 is connected between the first inductance 510 and the input port 522 of this isolator 508.One end of 3rd electric capacity 518 is connected between this second inductance 516 and input port 522 of isolator 508, the other end ground connection of the 3rd electric capacity 518.4th port ground connection of rectifier unit.The holding wire 524 of the output port of isolator 508 connects the first port of rectifier unit, the earth connection 526 of the output port of isolator 508 and the earth connection 521 of coupler 506 all ground connection.
Therefore, above-mentioned energy of electromagnetic field harvester 50 can electricity energy harvester be suppressed better to produce noise to coupler transfer.
Please refer to the drawing 6, sixth embodiment of the invention provides a kind of energy of electromagnetic field harvester 60.Energy of electromagnetic field harvester 60 structure of present embodiment is substantially identical with energy of electromagnetic field harvester 10 structure of the first execution mode, its difference is: the energy of electromagnetic field harvester 60 of present embodiment also comprises filter 602, and this isolator 604 comprises the first isolator 606 and the second isolator 608.
Coupler 610, first isolator 606, second isolator 608, filter 602, rectifier unit (not shown) and energy-storage units (not shown) connect successively.
Particularly, the output 614 of the input port 612 butt coupling device 610 of the first isolator 606, the holding wire 616 of the output port of the first isolator 606 connects earth connection 620 all ground connection of the output port earth connection 618 of input port 617, first isolator 606 of the second isolator 608 and the output port of the second isolator 608.
Filter 602 comprises inductance 622, first electric capacity 624 and the second electric capacity 626.Between the holding wire 628 that inductance 622 is connected to the output port of the second isolator 608 and the first port of rectifier unit.Between the holding wire 628 that one end of first electric capacity 624 is connected to the output port of the second isolator 608 and inductance 622, the other end ground connection of the first electric capacity 624.One end of second electric capacity 626 is connected between inductance 622 and the first port of rectifier unit, the other end ground connection of the second electric capacity 626.4th port ground connection of rectifier unit.Earth connection 615 ground connection of coupler 610.
Therefore, the noise that above-mentioned energy of electromagnetic field harvester 60 can suppress electricity energy harvester to produce better transmits to coupler 610.
Please refer to the drawing 7, seventh embodiment of the invention provides a kind of energy of electromagnetic field harvester 70.Energy of electromagnetic field harvester 70 structure of present embodiment is substantially identical with energy of electromagnetic field harvester 10 structure of the first execution mode, and its difference is: the rectifier unit 702 of the energy of electromagnetic field harvester 70 of present embodiment is voltage multiplier.
Particularly, rectifier unit 702 comprises the first electric capacity 704, second electric capacity 706, first diode 708 and the second diode 710.
The other end of holding wire 712, first electric capacity 704 of the output port of one end connection isolator of the first electric capacity 704 connects one end of the first diode 708 and one end of the second diode 710.The other end of the first diode 708 connects one end 714 of energy-storage units.The other end of the second diode 710 is connected between the earth connection 716 of the output port of isolator and the other end 718 of energy-storage units.Between the other end that one end of second electric capacity 706 is connected to the first diode 708 and one end 714 of energy-storage units, between the other end that the other end of the second electric capacity 706 is connected to the second diode 710 and the other end 718 of energy-storage units.
Therefore, the rectifier unit 702 that above-mentioned energy of electromagnetic field harvester 70 adopts also has boost function, while AC signal is become direct current signal, realizes the effect of dc voltage boost, thus gives the energy-storage units connected charging better below.
Please refer to the drawing 8, eighth embodiment of the invention provides a kind of energy of electromagnetic field harvester 80.Energy of electromagnetic field harvester 80 structure of present embodiment is substantially identical with energy of electromagnetic field harvester 10 structure of the first execution mode, and its difference is: the rectifier unit 802 of the energy of electromagnetic field harvester 80 of present embodiment is voltage multiplier.
Particularly, this rectifier unit 802 comprises the first electric capacity 804, second electric capacity 806, the 3rd electric capacity 808, the 4th electric capacity 810, first diode 812, second diode 814, the 3rd diode 816 and the 4th diode 818.
One end of first electric capacity 804 is connected the rear holding wire 820 jointly connecting the output port of isolator with one end of the second electric capacity 806.The other end of the first electric capacity 804 connects one end of the first diode 812 and one end of the second diode 814.The other end of the second electric capacity 806 connects one end of the 3rd diode 816.The other end of the 3rd diode 816 connects one end 822 of energy-storage units.
The other end of the first diode 812 connects the earth connection 824 of output port and the other end 826 of energy-storage units of isolator.The other end of the second diode 814 connects one end of the 4th diode 818 and one end of the 3rd electric capacity 808.The other end of the 4th diode 818 is connected between the other end of the second electric capacity 806 and one end of the 3rd diode 816.
The other end of the 3rd electric capacity 808 is connected between the earth connection 824 of the output port of isolator and the other end 826 of energy-storage units.Between the other end that one end of 4th electric capacity 810 is connected to the 3rd diode 816 and one end 822 of energy-storage units, between the other end that the other end of the 4th electric capacity 810 is connected to the 3rd electric capacity 808 and the other end 826 of energy-storage units.
Therefore, the rectifier unit 802 that above-mentioned energy of electromagnetic field harvester 80 adopts also has boost function, while AC signal is become direct current signal, realizes the effect of dc voltage boost, thus gives the energy-storage units connected charging better below.
Be appreciated that, the present invention also comprises the energy of electromagnetic field harvester of other execution modes, and the energy of electromagnetic field harvester of these other execution modes can comprise as the rectifier unit of the 7th or eight execution modes and the filter of the second to six arbitrary execution mode or plural isolator.In these other execution modes, the connected mode of rectifier unit, filter and isolator and principle, those skilled in the art in conjunction with the content disclosed by above the first to eight execution mode, can not repeat them here.
Please refer to the drawing 9, a kind of communicator 90 of ninth embodiment of the invention comprises communication antenna 902 and energy of electromagnetic field harvester 904.Energy of electromagnetic field harvester 904 is the energy of electromagnetic field harvester 10 of the first execution mode.The energy of electromagnetic field of coupler 905 received communication antenna 902 radiation of energy of electromagnetic field harvester 904.
This communication antenna 902 comprises Antenna baseplate 906, antenna casing 908, antenna feed cable 910 and antenna radiating element 912, this Antenna baseplate 906 is connected jointly to form receiving space 914 with this antenna casing 908, this antenna radiating element 912 is positioned at this receiving space 914, and this antenna feed cable 910 wears this Antenna baseplate 906 and is connected with this antenna radiating element 912.
In present embodiment, this energy of electromagnetic field harvester 902 is arranged on the position apart from this antenna casing 908 certain distance, as long as this distance can make energy of electromagnetic field harvester 902 reach the function of collecting energy.
In other execution mode communicators, this energy of electromagnetic field harvester can be fixed in this receiving space, and namely in antenna casing, such advantage is that energy of electromagnetic field harvester can be protected in order to avoid damage by antenna casing; Or this energy of electromagnetic field harvester also can be fixed on the outside of this antenna casing, such advantage, when carrying out upgrading, increase self-checking function for ordinary antennas, can take original antenna apart.
Above-mentioned communicator 90, by arranging isolator in energy of electromagnetic field harvester 902, the noise produce the circuit after isolator and coupler are isolated, make from subsequent conditioning circuit, noise as rectifier cannot be radiate by coupler, avoid and interference is caused to communication antenna nearby, and then ensure that the performance of communication system.
Be appreciated that in the communicator of other execution modes, energy of electromagnetic field harvester can also be the energy of electromagnetic field harvester of above arbitrary execution mode.
In the description of this specification, specific features, structure, material or feature that the description of reference term " execution mode ", " some execution modes ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with described execution mode or example are contained at least one execution mode of the present invention or example.In this manual, identical execution mode or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more execution mode or example.
Although illustrate and describe embodiments of the present invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these execution modes when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. an energy of electromagnetic field harvester, it is characterized in that, comprise the coupler connected successively, isolator, rectifier unit and energy-storage units, this coupler is for receiving electromagnetic field signal and this electromagnetic field signal being converted to circuit signal, this isolator is used for this circuit signal being transferred to this rectifier unit and being used for stoping the interference signal from this rectifier unit to be transferred to this coupler, this rectifier unit is used for the direct current signal be converted to by this circuit signal as DC energy, this energy-storage units for store this rectifier unit export this DC energy and for exporting this DC energy.
2. energy of electromagnetic field harvester as claimed in claim 1, it is characterized in that, the input port of this isolator connects the output of this coupler, and the output port of this isolator connects this rectifier unit.
3. energy of electromagnetic field harvester as claimed in claim 2, it is characterized in that, this rectifier unit is bridge rectifier, first port of this rectifier unit connects the output port of this isolator, second port of this rectifier unit connects one end of this energy-storage units, 3rd port of this rectifier unit connects the other end of this energy-storage units, and the 4th port of this rectifier unit connects the output port of this isolator.
4. energy of electromagnetic field harvester as claimed in claim 2, it is characterized in that, this energy of electromagnetic field harvester also comprises the first filter and the second filter, and this coupler, this first filter, this isolator, this second filter, this rectifier unit and this energy-storage units connect successively.
5. energy of electromagnetic field harvester as claimed in claim 2, it is characterized in that, this energy of electromagnetic field harvester also comprises the first filter and the second filter, and this coupler, this isolator, this first filter, this second filter, this rectifier unit and this energy-storage units connect successively.
6. energy of electromagnetic field harvester as claimed in claim 2, it is characterized in that, this energy of electromagnetic field harvester also comprises the first filter and the second filter, and this coupler, this first filter, this second filter, this isolator, this rectifier unit and this energy-storage units connect successively.
7. energy of electromagnetic field harvester as claimed in claim 2, it is characterized in that, this isolator comprises the first isolator and the second isolator, this energy of electromagnetic field harvester also comprises filter, and this coupler, this first isolator, this second isolator, this filter, this rectifier unit and this energy-storage units connect successively.
8. energy of electromagnetic field harvester as claimed in claim 2, it is characterized in that, this rectifier unit is voltage multiplier, first port of this rectifier unit connects the output port of this isolator, second port of this rectifier unit connects one end of this energy-storage units, 3rd port of this rectifier unit connects the other end of this energy-storage units, and the 4th port of this rectifier unit connects the output port of this isolator.
9. a communicator, it is characterized in that, comprise communication antenna and energy of electromagnetic field harvester, this energy of electromagnetic field harvester comprises the coupler connected successively, isolator, rectifier unit and energy-storage units, this coupler is for receiving the electromagnetic field signal of this communication antenna radiation and this electromagnetic field signal being converted to circuit signal, this isolator is used for this circuit signal being transferred to this rectifier unit and being used for stoping the interference signal from this rectifier unit to be transferred to this coupler, this rectifier unit is used for the direct current signal be converted to by this circuit signal as DC energy, this energy-storage units for store this rectifier unit export this DC energy and for exporting this DC energy.
10. communicator as claimed in claim 9, it is characterized in that, this communication antenna comprises Antenna baseplate, antenna casing, antenna feed cable and antenna radiating element, this Antenna baseplate is connected jointly to form receiving space with this antenna casing, this antenna radiating element is positioned at this receiving space, this antenna feed cable wears this Antenna baseplate and is connected with this antenna radiating element, this energy of electromagnetic field harvester is fixed in this receiving space, or this energy of electromagnetic field harvester is fixed on the outside of this antenna casing, or this energy of electromagnetic field harvester is apart from this antenna casing certain distance.
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| CN104539028B (en) | 2018-03-27 |
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