CN104795906B - A kind of RF energy acquisition method and device - Google Patents
A kind of RF energy acquisition method and device Download PDFInfo
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- CN104795906B CN104795906B CN201510241937.2A CN201510241937A CN104795906B CN 104795906 B CN104795906 B CN 104795906B CN 201510241937 A CN201510241937 A CN 201510241937A CN 104795906 B CN104795906 B CN 104795906B
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- 230000005611 electricity Effects 0.000 claims description 21
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Abstract
The present invention provides a kind of RF energy acquisition method and device, including：Activate RF energy harvester；After the RF energy harvester is activated, the transceiver mode of the transceiver mode of the RF energy harvester and the electronic equipment is configured to the first mode of operation；Charging process is performed repeatedly in this first operative mode, wherein the charging process includes：The identity information of channels detection information and the RF energy harvester, which is issued, in sending time slots sends energy to the RF energy harvester on idle channel to trigger the energy dispensing device in wireless charging system, charged receiving the energy of the time slot reception energy dispensing device transmission to the electronic equipment, realization is charged to electronic equipment on the move.
Description
Technical field
The invention belongs to wireless charging technical field, in particular, more particularly to a kind of RF energy acquisition method and
Device.
Background technology
With continuing to develop for mobile communication technology, various mobile electronic devices emerge in an endless stream, work and life to user
Work brings great convenience.However, the battery durable ability of these mobile electronic devices is limited, so as to greatly limit user
Experience, or even very big puzzlement can be brought to user.
To solve this problem, generally mobile electronic device is charged using wireless charging device at present, wherein without
Line charging equipment is a kind of in the case of not by electric wire, is more than one mobile electronic device using electromagnetic induction principle
The equipment of charging.Its operation principle is：First with electric current, by coil, the environment where wireless charging unit produces change
Magnetic field；Secondly it is located in its coil-induced local environment of the wireless charging device in mobile electronic device after changes of magnetic field, will
Changes of magnetic field is converted to electric current, and then completes the wireless charging to mobile electronic device.
However, because wireless charging device has strong influence to the effect that induced field changes, it requires wireless charging
Electric equipment and the distance between magnetic field offer equipment are close, or even mutually press close to, when both distances are slightly remote, wireless charging device
Interior coil can not sense changes of magnetic field, so as to can not be charged to mobile electronic device.
The content of the invention
In view of this, it is an object of the invention to provide a kind of RF energy acquisition method and device, in movement
Electronic equipment charged.
The present invention provides a kind of RF energy acquisition method, and dress is gathered applied to the RF energy in wireless charging system
Put, methods described includes：
Activate the RF energy harvester；
After the RF energy harvester is activated, by the transceiver mode and the electricity of the RF energy harvester
The transceiver mode of sub- equipment is configured to the first mode of operation；
Charging process is performed repeatedly in this first operative mode, wherein the charging process includes：In sending time slots
The identity information of channels detection information and the RF energy harvester is issued to trigger the energy in wireless charging system
Dispensing device sends energy on idle channel to the RF energy harvester, and the energy transmission is received receiving time slot
The energy that device is sent is charged to the electronic equipment.
Preferably, methods described also includes：Judge whether the energy value that the RF energy harvester is received is more than
Second Threshold, if it is terminates in and the Channel Detection information and the identity information is sent under sending time slots, and will be described
The transceiver mode of RF energy harvester and the transceiver mode of the electronic equipment are configured to the second mode of operation, if otherwise
Continue executing with charging process.
Preferably, methods described also includes：Obtain the temperature of the RF energy harvester；
Judge whether the temperature of the RF energy harvester is more than preset temperature；
When the temperature of the RF energy harvester is less than preset temperature, judge that the RF energy harvester connects
Whether the energy value received is more than Second Threshold, if it is terminates in and the Channel Detection information and institute are sent under sending time slots
Identity information is stated, and the transceiver mode of the transceiver mode of the RF energy harvester and the electronic equipment is configured to
Two mode of operations, if otherwise continuing executing with charging process；
When the temperature of the RF energy harvester is more than or equal to preset temperature, terminates in and institute is sent under sending time slots
State Channel Detection information and the identity information, and by the transceiver mode and the electronic equipment of the RF energy harvester
Transceiver mode be configured to the second mode of operation.
Preferably, methods described also includes：After the energy that the energy dispensing device is sent is received, by energy
Part I is supplied to electronic equipment to be charged, and the Part II in energy is used for into the energy expenditure of sending time slots and is
Transmission electric capacity in the RF energy harvester is charged.
Preferably, the activation RF energy harvester, including：It is small in the available power for detecting electronic equipment
In equal to first threshold or receiving after the charging instruction that the electronic equipment is sent, the RF energy collection dress is activated
Put.
The present invention also provides a kind of RF energy harvester, and described device includes：
Unit is activated, for activating the RF energy harvester；
Control unit, for after the RF energy harvester is activated, by the receipts of the RF energy harvester
Hair pattern and the transceiver mode of the electronic equipment are configured to the first mode of operation；
Transmitting element, in this first operative mode, channels detection information being issued and described in sending time slots
The identity information of RF energy harvester is to trigger the energy dispensing device in wireless charging system on idle channel to institute
State RF energy harvester and send energy；
Receiving unit, in this first operative mode, the energy dispensing device transmission being received receiving time slot
Energy charged to the electronic equipment.
Preferably, described device also includes：First judging unit, for judging that the RF energy harvester is received
Energy value whether be more than Second Threshold, if it is control the transmitting element to terminate in and the channel sent under sending time slots
Detection information and the identity information, and described control unit is triggered by the transceiver mode of the RF energy harvester and institute
The transceiver mode for stating electronic equipment is configured to the second mode of operation.
Preferably, described device also includes：Acquiring unit, the temperature for obtaining the RF energy harvester；
Second judging unit, for judging whether the temperature of the RF energy harvester is more than preset temperature, if
It is that the triggering transmitting element terminates in the Channel Detection information and the identity information are sent under sending time slots, and triggers institute
State control unit and the transceiver mode of the transceiver mode of the RF energy harvester and the electronic equipment is configured to second
Mode of operation；
3rd judging unit, for when the temperature of the RF energy harvester is less than preset temperature, judging described
Whether the energy value that RF energy harvester is received is more than Second Threshold, if it is triggers the transmitting element and terminates in
The Channel Detection information and the identity information are sent under sending time slots, and triggers described control unit by the RF energy
The transceiver mode of harvester and the transceiver mode of the electronic equipment are configured to the second mode of operation.
Preferably, described device also includes：Energy management unit, for receiving what the energy dispensing device was sent
After energy, it is supplied to electronic equipment to be charged the Part I in energy, when the Part II in energy is used to send
The energy expenditure of gap and charged for the transmission electric capacity in the RF energy harvester.
Preferably, it is described activation unit specifically for：It is less than or equal to the first threshold in the available power for detecting electronic equipment
It is worth or receives after the charging instruction that the electronic equipment is sent, activates the RF energy harvester.
Compared with prior art, the above-mentioned technical proposal that the present invention is provided has the following advantages that：
Above-mentioned technical proposal provided in an embodiment of the present invention can be after activation RF energy harvester by RF energy
The transceiver mode of harvester and the transceiver mode of electronic equipment are configured to the first mode of operation, with anti-in the first operation mode
Charging process is performed again, and wherein charging process includes：Channels detection information and RF energy collection dress are issued in sending time slots
The identity information put is to trigger the energy dispensing device in wireless charging system on idle channel to RF energy harvester
Energy is sent, is charged, realized to movement to electronic equipment receiving the energy of time slot reception energy dispensing device transmission
In electronic equipment charged.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of flow chart of RF energy acquisition method provided in an embodiment of the present invention；
Fig. 2 is subframe schematic diagram provided in an embodiment of the present invention；
Fig. 3 is the first structural representation of RF energy harvester provided in an embodiment of the present invention；
Fig. 4 is the structural representation of activation unit in RF energy harvester shown in Fig. 3；
Fig. 5 is second of structural representation of RF energy harvester provided in an embodiment of the present invention；
Fig. 6 is the third structural representation of RF energy harvester provided in an embodiment of the present invention；
Fig. 7 is the 4th kind of structural representation of RF energy harvester provided in an embodiment of the present invention；
Fig. 8 is the structural representation of energy management unit in RF energy harvester shown in Fig. 7；
Fig. 9 is the structural representation of RF energy collecting unit in RF energy harvester provided in an embodiment of the present invention
Figure；
Figure 10 is the structural representation of transmitting element in RF energy harvester provided in an embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Referring to Fig. 1, it illustrates a kind of flow chart of RF energy acquisition method provided in an embodiment of the present invention, it is described
RF energy acquisition method is applied in the RF energy harvester in wireless charging system, may comprise steps of：
101：Activate RF energy harvester.In embodiments of the present invention, RF energy harvester can be with waiting to fill
The electronic equipment wired connection of electricity, can also be embedded in the RF energy harvester in electronic equipment internal.When electronic equipment is opened
Beginning can be by user's manual actuation RF energy harvester when charging, or is the state activation according to electronic equipment.Example
The available power of electronic equipment can be detected such as RF energy harvester, when the available power for detecting electronic equipment is less than etc.
RF energy harvester is activated when first threshold, wherein first threshold can be set not for the electronic equipment of different model
Same value, is not any limitation as to this embodiment of the present invention.
In another example the application of instruction charging is provided with an electronic device, when user wants to charge to electronic equipment
It can operate electronic equipment to open and run the application for indicating to charge, the corresponding charging after application is opened and is run
Instruction is sent to RF energy harvester, and now RF energy harvester is activated.
102：After activation RF energy harvester, by the transceiver mode of RF energy harvester and electronic equipment
Transceiver mode is configured to the first mode of operation.Wherein the first mode of operation is used to indicate that RF energy harvester starts to electronics
Equipment is charged, in embodiments of the present invention, the first mode of operation can for TDD (Time Division Duplexing,
Time division duplex) pattern or FD (Full Duplex, full duplex) pattern.
103：Perform charging process repeatedly in the first operation mode, wherein charging process includes：Issued in sending time slots
The identity information of channels detection information and RF energy harvester is to trigger the energy dispensing device in wireless charging system
Energy is sent to RF energy harvester on idle channel, is come in the energy for receiving time slot reception energy dispensing device transmission
Charged to electronic equipment.
By taking FD patterns as an example, the sending time slots of the charging process are identical with time slot is received, and whole subframe is occupied simultaneously and is received
Send out the period.By taking tdd mode as an example, when a length of T of a subframe, a portion duration τ is sending time slots, during another part
Long T- τ is receive time slot, as shown in Figure 2.RF energy harvester sends channel to energy dispensing device on sending time slots
Detection information and identity information, wherein Channel Detection information are used to indicate between RF energy harvester and energy dispensing device
Channel situation so that energy dispensing device communicates on idle channel with energy dispensing device, identity information is then used to indicate
Which RF energy harvester RF energy harvester is specially, and such energy dispensing device can be gathered to RF energy
Device carries out authentication, can just be sent energy to corresponding RF energy by rear energy dispensing device in authentication
In harvester.Receive RF energy harvester on time slot and receive the energy that energy dispensing device is sent, received by it
Energy can be used for being charged to electronic equipment.
And RF energy harvester can receive the energy that multiple energy dispensing devices are sent simultaneously, energy is existed
Assemble at RF energy harvester, so when situation distant between RF energy harvester and energy dispensing device
Under, RF energy harvester can still receive stronger energy and be supplied to electronic equipment, so as to accelerate to be on the move
Charging rate when electronic equipment remotely charge.
Herein it should be noted is that：When RF energy harvester receives what energy dispensing device was sent for the first time
When energy is more than given threshold, show that the success of RF energy harvester sends Channel Detection information and body to energy dispensing device
Part information, follow-up RF energy harvester then can be without sending Channel Detection information and identity information again, and it can be by
The duration of whole subframe receives energy as time slot is received；When RF energy harvester receives energy dispensing device for the first time
When the energy of transmission is less than or equal to given threshold, shows that RF energy harvester is failed and send channel to energy dispensing device
Detection information and identity information, follow-up RF energy harvester then need to continue to send Channel Detection information on sending time slots
With identity information until the energy received is more than given threshold.Wherein given threshold can be set not according to different application scene
Same numerical value, is not any limitation as to this embodiment of the present invention.
It can be seen from the above technical proposal that RF energy acquisition method provided in an embodiment of the present invention can be penetrated in activation
The transceiver mode of the transceiver mode of RF energy harvester and electronic equipment is configured to the first work after frequency electricity energy harvester
Operation mode, to perform charging process repeatedly in the first operation mode, wherein charging process includes：Issue and deliver letters in sending time slots
The identity information of road detection information and RF energy harvester is to trigger the energy dispensing device in wireless charging system in sky
Energy is sent to RF energy harvester on idle channel, is come in the energy for receiving time slot reception energy dispensing device transmission to electricity
Sub- equipment is charged, and realization is charged to electronic equipment on the move.
In addition RF energy acquisition method provided in an embodiment of the present invention is also needed to when terminating electronic equipment being filled
Electricity is defined, to prevent electronic equipment to be chronically at the damage to the battery in electronic equipment under charged state.One of which
Feasible pattern is that charging duration can be pre-set in RF energy harvester, when its duration that charges reaches what is pre-set
During charging duration, the charging to electronic equipment is terminated, now RF energy harvester can be terminated under sending time slots and sent
Channel Detection information and identity information, such energy dispensing device do not receive Channel Detection information and identity information, can be whole yet
The only transmission of energy.
Another feasible pattern is：RF energy acquisition method provided in an embodiment of the present invention can also judge RF energy
Whether the energy value that harvester is received is more than Second Threshold, if it is terminates in sending time slots and issues channels detection letter
Breath and identity information, and the transceiver mode of the transceiver mode of RF energy harvester and electronic equipment is configured to the second work
Pattern, if otherwise continuing executing with charging process.
When the energy value that RF energy harvester is received is more than Second Threshold, show energy value that it receives
Through beyond critical field, now receive again energy can cause energy dissipation and RF energy harvester may be caused damage
It is bad, therefore need termination to receive energy, radio frequency energy when the energy value that RF energy harvester is received is more than Second Threshold
Amount harvester can then terminate in sending time slots and issue channels detection information and identity information, and such energy dispensing device is received
Less than Channel Detection information and identity information, the transmission of energy can be also terminated.
Still further possibility is then the judgment mode for being combined temperature and energy value, and its process is " acquisition is penetrated first
The temperature of frequency electricity energy harvester, the temperature of RF energy harvester is mainly what is produced during the work of RF energy harvester
Temperature, it can be obtained by being embedded in the temperature sensor on RF energy harvester；Secondly judge that RF energy is adopted
Whether the temperature of acquisition means is more than preset temperature；Then in situation of the temperature less than preset temperature of RF energy harvester
Under, judge whether the energy value that RF energy harvester is received is more than Second Threshold, if it is terminate in sending time slots
Issue channels detection information and identity information, and by the transceiver mode of RF energy harvester and the transmitting-receiving mould of electronic equipment
Formula is configured to the second mode of operation, if otherwise continuing executing with charging process；When RF energy harvester temperature be more than etc.
When preset temperature, terminate in sending time slots and issue channels detection information and identity information, and by RF energy harvester
Transceiver mode and the transceiver mode of electronic equipment be configured to the second mode of operation.
That is the mode that temperature and energy value are combined is higher than the control hierarchy of energy value with the control hierarchy of temperature
To whether terminating reception energy and being controlled, when temperature is less than the energy value that receives of preset temperature and RF energy harvester
During more than Second Threshold, terminate and receive energy.When temperature be more than or equal to preset temperature when, terminate receive energy, with reduce due to
The damage of RF energy harvester caused by high temperature.
Wherein above-mentioned Second Threshold is the receivable maximum energy value of RF energy harvester, for different receiving abilities
RF energy harvester for different Second Thresholds can be set.Corresponding preset temperature is for different RF energies
Can also be different for harvester, the embodiment of the present invention is not any limitation as to the value of the two threshold values.
In addition RF energy harvester is after the energy of energy dispensing device transmission is received, and it can also apply this hair
Part I in energy is supplied to electronic equipment to be charged by the RF energy acquisition method that bright embodiment is provided, by energy
In Part II be used for the energy expenditure of sending time slots and charged for the transmission electric capacity in RF energy harvester,
So RF energy harvester sends electric capacity before be activated next time to provide electric power branch for RF energy harvester
Hold.
Herein it should be noted is that：RF energy harvester, will after such as RF energy signal is received
It is converted to direct current, and direct current then is divided into Part I and Part II, and wherein Part I is supplied to electronic equipment
Charged, Part II then enters for the energy expenditure of sending time slots and for the transmission electric capacity in RF energy harvester
Row charging.
For foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as to a series of combination of actions, but
It is that those skilled in the art should know, the present invention is not limited by described sequence of movement, because according to the present invention, certain
A little steps can be carried out sequentially or simultaneously using other.Secondly, those skilled in the art should also know, be retouched in specification
The embodiment stated belongs to preferred embodiment, and involved action and the module not necessarily present invention are necessary.
Corresponding with above method embodiment, the embodiment of the present invention also provides a kind of RF energy harvester, its structure
Schematic diagram is as shown in figure 3, can include：Activate unit 11, control unit 12, transmitting element 13 and receiving unit 14.
Unit 11 is activated, for activating RF energy harvester.In embodiments of the present invention, RF energy harvester
The RF energy harvester can also be embedded in electronic equipment internal with electronic equipment wired connection to be charged.When
Electronic equipment can be by user's manual actuation RF energy harvester when starting to charge up, or is the shape according to electronic equipment
State is activated.For example RF energy harvester can detect the available power of electronic equipment, when detecting the available of electronic equipment
Electricity is less than or equal to activate RF energy harvester, wherein electronic equipment of the first threshold for different model during first threshold
Different values can be set, this embodiment of the present invention is not any limitation as.
In another example the application of instruction charging is provided with an electronic device, when user wants to charge to electronic equipment
It can operate electronic equipment to open and run the application for indicating to charge, the corresponding charging after application is opened and is run
Instruction is sent to RF energy harvester, and now RF energy harvester is activated.
The structure of activation unit 11 is as shown in figure 4, can include in embodiments of the present invention：Electric quantity detecting circuit 111, fill
Electric command reception circuit 112 and activation instruction control circuit 113.
Electric quantity detecting circuit 111, including information about power reading circuit and comparator, wherein information about power reading circuit, are used
In the information about power for reading the output of battery control chip, information about power is used for the available power for indicating electronic equipment.Comparator is used
It is compared in by information about power with first threshold, if information about power is more than first threshold, electric quantity detecting circuit 111 is exported
Represent the signal of " not activating "；If information about power is less than or equal to first threshold, the output of electric quantity detecting circuit 111 represents " to swash
The signal of work ".
Charging instruction receiving circuit 112, for judging whether to receive the charging instruction that electronic equipment is sent, if it is
Output represents the signal of " activation "；If otherwise output represents the signal of " not activating ".
Activation instruction controls circuit 113, the signal for combining two above circuit output, when receiving any one table
When showing the signal of " activation ", RF energy harvester is activated.
Control unit 12, for after activation RF energy harvester, by the transceiver mode of RF energy harvester
The first mode of operation is configured to the transceiver mode of electronic equipment.Wherein the first mode of operation is used to indicate RF energy collection dress
Put and start to charge to electronic equipment, in embodiments of the present invention, the first mode of operation can be tdd mode, or
FD patterns.
Transmitting element 13, in the first operation mode, channels detection information and radio frequency energy being issued in sending time slots
The identity information of harvester is measured to trigger the energy dispensing device in wireless charging system on idle channel to RF energy
Harvester sends energy.
Receiving unit 14, in the first operation mode, the energy that energy dispensing device is sent being received receiving time slot
To be charged to electronic equipment.
When a length of T of subframe structure for example shown in Fig. 2, in tdd mode a subframe, a portion duration τ are
Sending time slots, the RF energy harvester on sending time slots of transmitting element 13 sends Channel Detection information to energy dispensing device
And identity information, wherein Channel Detection information is for indicating the channel feelings between RF energy harvester and energy dispensing device
Condition, so that energy dispensing device communicates on idle channel with energy dispensing device, identity information is then used to indicate RF energy
Which RF energy harvester harvester is specially, and such energy dispensing device can be carried out to RF energy harvester
Authentication, can just be sent energy to corresponding RF energy harvester in authentication by rear energy dispensing device
In.
Another part duration T- τ of subframe shown in Fig. 2 are reception time slot, the RF energy on time slot is received of receiving unit 14
Harvester receives the energy that energy dispensing device is sent, and the energy received by it can be used for being filled to electronic equipment
Electricity.
And receiving unit 14 can receive the energy that multiple energy dispensing devices are sent simultaneously, make energy in radio frequency energy
Measure and assemble at harvester, so in the case of distant between RF energy harvester and energy dispensing device, penetrate
Frequency electricity energy harvester can still receive stronger energy and be supplied to electronic equipment, so as to accelerate to set for electronics on the move
Charging rate when standby progress is remotely charged.
Herein it should be noted is that：When the energy that receiving unit 14 receives the transmission of energy dispensing device for the first time is big
When given threshold, show that the success of transmitting element 13 sends Channel Detection information and identity information to energy dispensing device, subsequently
Transmitting element 13 then can without sending Channel Detection information and identity information again, its can using the duration of whole subframe as
Time slot is received to receive energy；When the energy that receiving unit 14 receives the transmission of energy dispensing device for the first time is less than or equal to setting threshold
During value, show that transmitting element 13 is failed and send Channel Detection information and identity information to energy dispensing device, it is follow-up to send single
Member 13 then needs to continue to send Channel Detection information and identity information on sending time slots until the energy received is more than setting
Threshold value.Wherein given threshold can set different numerical value according to different application scene, and this embodiment of the present invention is not any limitation as.
It can be seen from the above technical proposal that RF energy harvester provided in an embodiment of the present invention can be penetrated in activation
The transceiver mode of the transceiver mode of RF energy harvester and electronic equipment is configured to the first work after frequency electricity energy harvester
Operation mode, to perform charging process repeatedly in the first operation mode, wherein charging process includes：Issue and deliver letters in sending time slots
The identity information of road detection information and RF energy harvester is to trigger the energy dispensing device in wireless charging system in sky
Energy is sent to RF energy harvester on idle channel, is come in the energy for receiving time slot reception energy dispensing device transmission to electricity
Sub- equipment is charged, and realization is charged to electronic equipment on the move.
In addition RF energy acquisition method provided in an embodiment of the present invention is also needed to when terminating electronic equipment being filled
Electricity is defined, to prevent electronic equipment to be chronically at the damage to the battery in electronic equipment under charged state, what it was used
Mode can refer to RF energy harvester shown in Fig. 5 and Fig. 6, and RF energy harvester is on Fig. 3 bases wherein shown in Fig. 5
On also include：First judging unit 15, for judging whether the energy value that RF energy harvester is received is more than the second threshold
Value, if it is controls transmitting element 13 to terminate in sending time slots and issues channels detection information and identity information, and trigger control
The transceiver mode of the transceiver mode of RF energy harvester and electronic equipment is configured to the second mode of operation by unit 12 processed.
RF energy harvester shown in Fig. 6 also includes on the basis of Fig. 3：Acquiring unit 16, the and of the second judging unit 17
3rd judging unit 18.Wherein acquiring unit 16, the temperature for obtaining RF energy harvester, RF energy harvester
Temperature temperature for producing when being mainly the work of RF energy harvester, it can be by being embedded in RF energy harvester
On temperature sensor obtain.
Second judging unit 17, for judging whether the temperature of RF energy harvester is more than preset temperature, if
Triggering transmitting element 13 terminates in sending time slots and issues channels detection information and identity information, and trigger control unit 12 will be penetrated
The transceiver mode of frequency electricity energy harvester and the transceiver mode of electronic equipment are configured to the second mode of operation.
3rd judging unit 18, for when the temperature of RF energy harvester is less than preset temperature, judging radio frequency energy
Whether the energy value that amount harvester is received is more than Second Threshold, if it is triggers transmitting element 13 and terminates in sending time slots
Issue channels detection information and identity information, and trigger control unit 12 is by the transceiver mode and electricity of RF energy harvester
The transceiver mode of sub- equipment is configured to the second mode of operation.
Wherein above-mentioned Second Threshold is the receivable maximum energy value of RF energy harvester, for different receiving abilities
RF energy harvester for different Second Thresholds can be set.Corresponding preset temperature is for different RF energies
Can also be different for harvester, the embodiment of the present invention is not any limitation as to the value of the two threshold values.
Referring to Fig. 7, it illustrates the 4th of RF energy harvester provided in an embodiment of the present invention kind structural representation
Figure, on the basis of Fig. 3, can also include：Energy management unit 19, for receiving the energy of energy dispensing device transmission
Afterwards, it is supplied to electronic equipment to be charged the Part I in energy, the Part II in energy is used for sending time slots
Energy expenditure and charged for the transmission electric capacity in RF energy harvester.
Herein it should be noted is that：RF energy harvester leads to after such as RF energy signal is received
The RF energy collecting unit crossed in it is converted into direct current, and direct current then is divided into first by energy management unit 19
Part and Part II, wherein Part I are supplied to electronic equipment to be charged, and Part II is then used for the energy of sending time slots
Amount is consumed and charged for the transmission electric capacity in RF energy harvester.
The structural representation of corresponding energy management unit 19 is as shown in figure 8, can include：Power splitter 191, sends electric capacity
192nd, temperature sensor 193, energy stores subelement 194 and transmission power supply control subelement 195.
Direct current is divided into Part I and Part II by power splitter 191, and wherein Part I is passing through energy stores
Electronic equipment is sent to after subelement 194 to be charged, Part II then disappears for transmitting element 13 in the energy of sending time slots
Consume and charged to send electric capacity 192.
Electric capacity 192 is sent, for providing the energy expenditure in sending time slots when initiating activation for transmitting element 13, is being swashed
After work by send power supply control subelement 195 by the Partial DC electricity of power splitter 191 be supplied to transmitting element 13 and by hair
Power supply control subelement 195 is sent to charge.
Temperature sensor 193, the temperature for monitoring RF energy harvester.
The structure of corresponding RF energy collecting unit can be with as shown in fig.9, can include：Reception antenna 20,
Low pass/bandpass filter 21, matching network 22, array of rectifier diodes 23 and straight-through wave filter 24.
Low pass/bandpass filter 21, for ensureing that reception antenna 20 receives what the RF energy signal in signal passed through
The signal of other frequencies, and the higher hamonic wave basis of signals for preventing array of rectifier diodes 23 from producing are filtered out simultaneously,
Complete the matching between low pass/bandpass filter 21 and reception antenna 20.Wherein low pass/bandpass filter 21 is that RF energy is adopted
Acquisition means can use low pass filter or bandpass filter, specifically be determined depending on the frequency range of RF energy signal.
Matching network 22, for by higher hamonic wave signal be limited in low pass/bandpass filter 21 and straight-through wave filter 24 it
Between, the higher hamonic wave signal for being so rectified the rectification of diode array institute increases, so as to improve array of rectifier diodes indirectly
Efficiency.Wherein higher hamonic wave is that the RF energy signal that RF energy harvester is received passes through array of rectifier diodes 23
What reflection was produced.Under normal circumstances, RF energy signal by array of rectifier diodes 23 when due to array of rectifier diodes
23, which are operated in reflection caused by nonlinear area, produces higher hamonic wave.And the effect of matching network 22 is then to commutation diode battle array
The input of row 23 carries out impedance matching, the reflection of the input of array of rectifier diodes 23 can be so reduced, into commutation diode
The RF energy signal of array 23 increases, and the direct current that the corresponding rectification of array of rectifier diodes 23 is obtained can also increase, so that
Improve the efficiency of array of rectifier diodes 23.
Array of rectifier diodes 23, for the RF energy signal rectification that receives RF energy harvester into direct current
Electricity.
Straight-through wave filter 24, while for by direct current, prevents baseband signal and higher hamonic wave signal from passing through negative
Carry, the harmonic signal outside non-dc electricity is reflexed into array of rectifier diodes 23, this not only can guarantee that the stabilization of output direct current
Property, moreover it is possible to improve the efficiency of array of rectifier diodes.
In addition the structure of transmitting element 13 as shown in Figure 10, can include in said apparatus embodiment：Data message framing
Subelement 131, modulator 132, automatic gain controller 133, calibration subelement 134, A-D converter 135, frequency mixer 136,
Radio-frequency front-end 137 and radio frequency power detector 138.
Data message framing subelement 131, for identity information and channel detection information to be combined, obtains original letter
Number, identity information can be set to frame head in combination, channel detection information is content frame.
Modulator 132, for primary signal to be transformed into electric wave signal.
Automatic gain controller 133, for receiving the radio-frequency power that radio frequency power detector 138 is detected, according to radio frequency
Power is adjusted to electric wave signal, is adjusted with the signal intensity for completing whole transmitting terminal.
Subelement 134 is calibrated, for eliminating the direct current biasing in electric wave signal, unbalanced amplitude and phase, is counted
Word IQ (Inphase and Quadrature, in the same direction and orthogonal) signal, to improve the ACPR (Adjacent of whole transmitting terminal
Channel Power Ratio, adjacent channel power ratio) and EVM (Error Vector Magnitude, error vector magnitude)
Deng RF index.
A-D converter 135, for digital I/Q signal to be transformed into simulation I/Q signal.
Frequency mixer 136, for simulation I/Q signal to be mixed into corresponding radio frequency band.
Radio-frequency front-end 137, filtering and power amplification for completing the simulation I/Q signal after mixing, and by antenna by mould
Intend I/Q signal to radiate.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation be all between difference with other embodiment, each embodiment identical similar part mutually referring to.
For device class embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is joined
See the part explanation of embodiment of the method.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, article or equipment.
The foregoing description of the disclosed embodiments, enables those skilled in the art to realize or using the present invention.To this
A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and generic principles defined herein can
Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited
It is formed on the embodiments shown herein, and is to fit to consistent with features of novelty with principles disclosed herein most wide
Scope.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of RF energy acquisition method, it is characterised in that applied to the RF energy harvester in wireless charging system,
The wireless charging system includes the RF energy harvester and at least one energy dispensing device, and methods described includes：
Activate the RF energy harvester；
After the RF energy harvester is activated, by the transceiver mode of the RF energy harvester and electronic equipment
Transceiver mode is configured to the first mode of operation；
Charging process is performed repeatedly in this first operative mode, wherein the charging process includes：Issued in sending time slots
The identity information of channels detection information and the RF energy harvester is believed with triggering the energy dispensing device in the free time
Energy is sent to the RF energy harvester on road, is come in the energy for receiving the time slot reception energy dispensing device transmission
Charged to the electronic equipment；
The RF energy harvester receives the energy that multiple energy dispensing devices are sent simultaneously, makes the energy in radio frequency energy
Measure and assemble at harvester；
When the energy that the RF energy harvester receives the energy dispensing device transmission for the first time is more than given threshold,
The duration of whole subframe is received energy by the RF energy harvester as time slot is received.
2. according to the method described in claim 1, it is characterised in that methods described also includes：Judge the RF energy collection
Whether the energy value that device is received is more than Second Threshold, if it is terminates in and the Channel Detection letter is sent under sending time slots
Breath and the identity information, and the transceiver mode of the transceiver mode of the RF energy harvester and the electronic equipment is matched somebody with somebody
The second mode of operation is set to, if otherwise continuing executing with charging process.
3. according to the method described in claim 1, it is characterised in that methods described also includes：Obtain the RF energy collection
The temperature of device；
Judge whether the temperature of the RF energy harvester is more than preset temperature；
When the temperature of the RF energy harvester is less than preset temperature, judge that the RF energy harvester is received
Energy value whether be more than Second Threshold, if it is terminate in and the Channel Detection information and the body sent under sending time slots
Part information, and the transceiver mode of the transceiver mode of the RF energy harvester and the electronic equipment is configured to the second work
Operation mode, if otherwise continuing executing with charging process；
When the temperature of the RF energy harvester is more than or equal to preset temperature, terminates in and the letter is sent under sending time slots
Road detection information and the identity information, and by the transceiver mode of the RF energy harvester and the receipts of the electronic equipment
Pattern configurations are sent out into the second mode of operation.
4. according to the method described in claim 1, it is characterised in that methods described also includes：Sent receiving the energy
After the energy that device is sent, it is supplied to electronic equipment to be charged the Part I in energy, by the Part II in energy
Charged for the energy expenditure of sending time slots and for the transmission electric capacity in the RF energy harvester.
5. according to the method described in claim 1, it is characterised in that the activation RF energy harvester, including：
The available power for detecting electronic equipment is less than or equal to first threshold or receives the charging instruction that the electronic equipment is sent
Afterwards, the RF energy harvester is activated.
6. a kind of RF energy harvester, it is characterised in that the RF energy harvester is located in wireless charging system,
And the wireless charging system also includes at least one energy dispensing device；Described device includes：
Unit is activated, for activating the RF energy harvester；
Control unit, for after the RF energy harvester is activated, by the transmitting-receiving mould of the RF energy harvester
Formula and the transceiver mode of electronic equipment are configured to the first mode of operation；
Transmitting element, in this first operative mode, channels detection information and the radio frequency being issued in sending time slots
The identity information of electricity energy harvester gathers dress on idle channel to trigger the energy dispensing device to the RF energy
Put transmission energy；
Receiving unit, in this first operative mode, the energy that the energy dispensing device is sent being received receiving time slot
Measure to be charged to the electronic equipment；
The receiving unit receives the energy that multiple energy dispensing devices are sent simultaneously, the energy is gathered in RF energy and fills
Put place's aggregation；
When the energy that the receiving unit receives the energy dispensing device transmission for the first time is more than given threshold, the reception
The duration of whole subframe is received energy by unit as time slot is received.
7. device according to claim 6, it is characterised in that described device also includes：First judging unit, for judging
Whether the energy value that the RF energy harvester is received is more than Second Threshold, if it is controls the transmitting element whole
The Channel Detection information and the identity information are only sent under sending time slots, and triggers described control unit by the radio frequency
The transceiver mode of electricity energy harvester and the transceiver mode of the electronic equipment are configured to the second mode of operation.
8. device according to claim 6, it is characterised in that described device also includes：Acquiring unit, it is described for obtaining
The temperature of RF energy harvester；
Second judging unit, for judging whether the temperature of the RF energy harvester is more than preset temperature, if touching
Send out transmitting element described and terminate in and the Channel Detection information and the identity information are sent under sending time slots, and trigger the control
The transceiver mode of the transceiver mode of the RF energy harvester and the electronic equipment is configured to the second work by unit processed
Pattern；
3rd judging unit, for when the temperature of the RF energy harvester is less than preset temperature, judging the radio frequency
Whether the energy value that electricity energy harvester is received is more than Second Threshold, if it is triggers the transmitting element and terminates in transmission
The Channel Detection information and the identity information are sent under time slot, and triggers described control unit and gathers the RF energy
The transceiver mode of device and the transceiver mode of the electronic equipment are configured to the second mode of operation.
9. device according to claim 6, it is characterised in that described device also includes：Energy management unit, for connecing
Receive after the energy that the energy dispensing device is sent, be supplied to electronic equipment to be charged the Part I in energy, will
Part II in energy is used for the energy expenditure of sending time slots and is the transmission electric capacity in the RF energy harvester
Charged.
10. device according to claim 6, it is characterised in that the activation unit specifically for：Set detecting electronics
Standby available power is less than or equal to first threshold or received after the charging instruction that the electronic equipment is sent, and is penetrated described in activation
Frequency electricity energy harvester.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241937.2A CN104795906B (en) | 2015-05-12 | 2015-05-12 | A kind of RF energy acquisition method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241937.2A CN104795906B (en) | 2015-05-12 | 2015-05-12 | A kind of RF energy acquisition method and device |
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| Publication Number | Publication Date |
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| CN104795906A CN104795906A (en) | 2015-07-22 |
| CN104795906B true CN104795906B (en) | 2017-10-13 |
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| US10312747B2 (en) * | 2015-09-10 | 2019-06-04 | Cpg Technologies, Llc | Authentication to enable/disable guided surface wave receive equipment |
| JP6840144B2 (en) * | 2015-11-09 | 2021-03-10 | ベクトン・ディキンソン・アンド・カンパニーＢｅｃｔｏｎ， Ｄｉｃｋｉｎｓｏｎ Ａｎｄ Ｃｏｍｐａｎｙ | Use point interaction playback device that uses energy extraction from surrounding radio frequency communication |
| CN106936522B (en) * | 2017-02-13 | 2020-08-28 | 京信通信系统（中国）有限公司 | Intelligent antenna channel calibration method and calibration device |
| CN108809564B (en) * | 2017-05-04 | 2020-11-17 | 华为技术有限公司 | Method and apparatus for communication |
| WO2019061217A1 (en) * | 2017-09-29 | 2019-04-04 | 深圳传音通讯有限公司 | Mobile terminal suite and broadcast channel-based wireless charging method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100376068C (en) * | 2006-07-21 | 2008-03-19 | 上海广为拓浦电源有限公司 | Intelligent high-frequency accumulator charger |
| US8024012B2 (en) * | 2008-06-11 | 2011-09-20 | International Business Machines Corporation | Intelligent wireless power charging system |
| KR20120135885A (en) * | 2011-06-07 | 2012-12-17 | 삼성전자주식회사 | Wireless power transmitting/receiving system comprising transmitter and receiver, two-way communication method between the transmitter and the receiver, and the apparatuses |
| CN103023119A (en) * | 2012-12-06 | 2013-04-03 | 捷普科技（上海）有限公司 | Device and method for current adaptive wireless charging |
| CN103036282A (en) * | 2012-12-06 | 2013-04-10 | 捷普科技（上海）有限公司 | Voltage self-adaptation wireless charging device and method |
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