CN104124780A - Method and device for identifying payload - Google Patents
Method and device for identifying payload Download PDFInfo
- Publication number
- CN104124780A CN104124780A CN201310157654.0A CN201310157654A CN104124780A CN 104124780 A CN104124780 A CN 104124780A CN 201310157654 A CN201310157654 A CN 201310157654A CN 104124780 A CN104124780 A CN 104124780A
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- receiving terminal
- coil
- transmitting terminal
- end voltage
- terminal
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the wireless power transmission field and in particular relates to a method and a device for identifying payload. The method comprises the steps of acquiring the voltage of the two ends of a coil of a transmitting terminal when the transmitting terminal detects that a receiving terminal goes into a power supply region, if the voltage of the two ends of the coil of the transmitting terminal changes orderly, determining that the receiving terminal is legal and continuously supplying power to the legal receiving terminal, and if the voltage of the two ends of the coil of the transmitting terminal changes unorderly, determining that the receiving terminal is illegal and supplying no power to the illegal receiving terminal. The method is capable of determining the validity of the load by acquiring the voltage of the two ends of the coil of the transmitting terminal and determining whether the voltage changes orderly after detecting that the receiving terminal goes into the power supply region; no modulation-demodulation circuit needs to be designed, the cost is low and the requirement on the system stability is low.
Description
Technical field
The present invention relates to wireless power transmission field, relate in particular to a kind of method and apparatus of identifying pay(useful) load.
Background technology
" wireless power transmission " be utilize a kind of special installation by the electric energy of power supply change into can radio transmission energy, again this energy is transformed back into electric energy at receiving terminal, thus to electrical appliance wireless power.
Based on the radio energy transmission system under induction coupling electric energy transmission technology, need carry out load identification to receiving terminal, after identifying correct load, just can carry out work, otherwise placing the magnetic field of transmitting terminal coil transmitting after metallic foreign body for example can heat metallic foreign body, when serious, can burn transmitting terminal, cause damage.
Current existing receiving terminal load identification work, all based on communicating between secondary and former limit, at secondary circuit design modulation circuit, at former limit circuit design demodulator circuit, realize load identification with this, but this design need to design modulation-demodulation circuit, cost is high, the stability of a system is required large.
Summary of the invention
The embodiment of the present invention provides a kind of method and system of identifying pay(useful) load, is intended to solve the problem that needs to design modulation-demodulation circuit in prior art.
The embodiment of the present invention is achieved in that a kind of method of identifying pay(useful) load, and described method comprises:
Transmitting terminal has detected that receiving terminal enters power supply area, gathers transmitting terminal coil both end voltage;
Change if transmitting terminal coil both end voltage produces in order, judge that described receiving terminal is legal, to legal receiving terminal continued power; If transmitting terminal coil both end voltage does not produce orderly variation, judge that described receiving terminal is illegal, not to illegal receiving terminal power supply.
The embodiment of the present invention also provides a kind of device of identifying pay(useful) load, and described device comprises:
Voltage acquisition unit, has detected that for transmitting terminal receiving terminal enters power supply area, gathers transmitting terminal coil both end voltage;
Receiving terminal validity judgement unit, if produce in order and change for transmitting terminal coil both end voltage, judges that described receiving terminal is legal, to legal receiving terminal continued power; If transmitting terminal coil both end voltage does not produce orderly variation, judge that described receiving terminal is illegal, not to illegal receiving terminal power supply.
The present invention, by detecting that receiving terminal enters after power supply area, gathers transmitting terminal coil both end voltage, by judging whether voltage changes the validity that judges load in order, does not need to design modulation-demodulation circuit, and cost is low, requires low to the stability of a system.
Brief description of the drawings
Fig. 1 represents the method flow diagram of the identification pay(useful) load that the embodiment of the present invention provides;
Fig. 2 represents the method flow diagram of the identification pay(useful) load that the embodiment of the present invention provides;
Fig. 3 represents the structure drawing of device of the identification pay(useful) load that the embodiment of the present invention provides;
Fig. 4 represents the structure drawing of device of the identification pay(useful) load that the embodiment of the present invention provides;
Fig. 5 represents the system principle diagram of the identification pay(useful) load that the embodiment of the present invention provides;
Fig. 6 represents the system capacity transfer principle figure that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 shows a kind of method flow diagram of identifying pay(useful) load that the embodiment of the present invention provides, and details are as follows:
In step S101, transmitting terminal has detected that receiving terminal enters power supply area, gathers transmitting terminal coil both end voltage;
In embodiments of the present invention, transmitting terminal couple in adapter electric power, enter holding state, wait has receiving terminal load to enter power supply area, when there being load to put into power supply area, system standby wake module has recognized foreign object and has entered, and wakes transmitting terminal up, enter operating state, Real-Time Monitoring primary coil is that transmitting terminal coil both end voltage changes.
In step S102, if producing in order, transmitting terminal coil both end voltage changes, judge that this receiving terminal is legal, to legal receiving terminal continued power;
In step S103, if transmitting terminal coil both end voltage does not produce orderly variation, judge that this receiving terminal is illegal, not to illegal receiving terminal power supply.
In embodiments of the present invention, change by monitoring transmitting terminal coil both end voltage the legitimacy that judges receiving terminal load, when transmitting terminal coil both end voltage produces an orderly variation, judge that this load is as legal load, when transmitting terminal coil both end voltage does not produce an orderly variation, for example only once less variation, judges that this load is as illegal load.
Wherein, transmitting terminal coil both end voltage produces in order and changes specifically and realize by the following method:
Enter after the coil resonance of receiving terminal of power supply area through rectification circuit rectification, produce stable power supply, enable receiving terminal initialization;
The MCU of receiving terminal controls a dummy load of receiving terminal access by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce promutation;
The MCU of receiving terminal unloads this dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce telomutation;
In the time that transmitting terminal judges that transmitting terminal coil both end voltage produces twice orderly variation, judge that this receiving terminal is legal.
In embodiments of the present invention, transmitting terminal coil both end voltage produces orderly variation and also can realize by the following method:
Enter after the coil resonance of receiving terminal of power supply area through rectification circuit rectification, produce stable power supply, enable receiving terminal initialization;
The MCU of receiving terminal controls a dummy load of receiving terminal access by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce promutation;
The MCU of receiving terminal unloads this dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce telomutation;
The MCU of receiving terminal controls receiving terminal by GPIO and accesses this dummy load, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce sudden change for the third time;
The MCU of receiving terminal unloads this dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce the 4th sudden change;
In the time that transmitting terminal judges that transmitting terminal coil both end voltage produces four orderly variations, judge that this receiving terminal is legal.
In embodiments of the present invention, by in the built-in dummy load of receiving terminal, this dummy load is the resistance of 5 ohm or 10 ohm, if access is legal load, receiving terminal MCU(Micro Controller Unit, single-chip microcomputer) by GPIO(General Purpose Input Output, universal input/output) dummy load of control receiving terminal access, make receiving terminal resonator system produce electric current and voltage vibration, thereby drive transmitting terminal coil both end voltage to produce large variation, MCU unloads dummy load by controlling GPIO again, now resonator system can produce again the vibration of an electric current and voltage, thereby drive transmitting terminal coil both end voltage to produce larger variation, now, voltage produces once fluctuation, transmitting terminal coil both end voltage produces twice and changes in order, can distinguish the less variation of transmitting terminal coil both end voltage while putting into illegal load.
In embodiments of the present invention, process that can double loading and unloading dummy load, transmitting terminal coil both end voltage produces altogether four times and changes in order, also can continuous loading and unloading three times, four by that analogy inferior, all can produce the less variation that is different from transmitting terminal coil both end voltage while putting into illegal load.Transmitting terminal sample circuit collects after this voltage fluctuation, feeds back to transmitting terminal MCU, and transmitting terminal MCU judges that existing load is legal load accordingly, and sustainable supply electric power.
Fig. 2 shows a kind of method flow diagram of identifying pay(useful) load that the embodiment of the present invention provides, and details are as follows:
In step S201, transmitting terminal has detected that receiving terminal enters power supply area, gathers transmitting terminal coil both end voltage;
In step S202, if producing in order, transmitting terminal coil both end voltage changes, judge that this receiving terminal is legal, to legal receiving terminal continued power;
In step S203, if transmitting terminal coil both end voltage does not produce orderly variation, judge that this receiving terminal is illegal, not to illegal receiving terminal power supply.
In step S204, undergo mutation when collecting the generation of transmitting terminal coil both end voltage, judge that whether the magnitude of voltage of current collection is identical with the magnitude of voltage that holding state gathers, be to perform step S205, otherwise execution step S206;
In step S205, judge that load is removed, transmitting terminal is stopped power supply, and enters holding state;
In step S206, judge that load charging is full, transmitting terminal is stopped power supply, or enters trickle charge state, enters slow power supply.
In embodiments of the present invention, in to the process of load charging, suddenly change and judge whether load is removed in order by collecting the generation of transmitting terminal coil both end voltage, if the voltage gathering does not change in order, judge that load is still transmitting terminal power supply area on former limit, if the voltage gathering produces orderly variation, whether the value that the magnitude of voltage that continuation judgement collects collects with holding state is identical, judge that load is removed if identical, transmitting terminal inverter circuit quits work, and enters holding state; Judge that if not identical load charged, stop power supply, or judge that load enters the trickle charge state state of being near completion that charges, and enters slow power supply.
Judge that load charging is full or enter the specifically realization by the following method of trickle charge state:
The MCU of receiving terminal controls a dummy load of receiving terminal access by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce promutation;
The MCU of receiving terminal unloads this dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce telomutation;
The MCU of receiving terminal controls receiving terminal by GPIO and accesses this dummy load, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce sudden change for the third time;
The MCU of receiving terminal unloads this dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce the 4th sudden change;
In the time that transmitting terminal judges that transmitting terminal coil both end voltage produces four orderly variations, judge that this receiving terminal charging is full or enter trickle charge state.
In embodiments of the present invention, in the time that judgement is charged completely or is entered trickle charge state, equally can be by loading and unloading dummy load once, transmitting terminal coil both end voltage produces twice sudden change, also can be by twice of loading and unloading dummy load, three by that analogy inferior.
After judging that load has been charged, detect transmitting terminal electric capacity and whether change, be to enter holding state.
Fig. 3 Fig. 4 shows the structure drawing of device of a kind of effective identification load that the embodiment of the present invention provides, and details are as follows:
Voltage acquisition unit 31 transmitting terminals have detected that receiving terminal enters power supply area, gather transmitting terminal coil both end voltage;
In embodiments of the present invention, transmitting terminal couple in adapter electric power, enter holding state, wait has receiving terminal load to enter power supply area, when there being load to put into power supply area, system standby wake module has recognized foreign object and has entered, and wakes transmitting terminal up, enter operating state, Real-Time Monitoring primary coil is that transmitting terminal coil both end voltage changes.
If receiving terminal validity judgement unit 32 transmitting terminal coil both end voltage produce in order change, judge that this receiving terminal is legal, to legal receiving terminal continued power; If transmitting terminal coil both end voltage does not produce orderly variation, judge that this receiving terminal is illegal,, to illegal receiving terminal power supply, do not avoid transmitting terminal heating or burn.
In embodiments of the present invention, when transmitting terminal coil both end voltage produces an orderly variation, judge that this load is as legal load, when transmitting terminal coil both end voltage does not produce an orderly variation, for example only once less variation, judges that this load is as illegal load.In the time being judged as legal load, to this load continued power, in the time judging that load is illegal load, it is not powered.
Receiving terminal validity judgement unit comprises: receiving terminal initialization module 1 enters after the coil resonance of receiving terminal of power supply area through rectification circuit rectification, produces stable power supply, enables receiving terminal initialization;
The MCU of promutation module one 322 receiving terminals controls a dummy load of receiving terminal access by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce promutation;
The MCU of telomutation module one 323 receiving terminals unloads this dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce telomutation;
Judge that legal module 1 produces while changing in order for twice when transmitting terminal judges transmitting terminal coil both end voltage, judges that this receiving terminal is legal.
In embodiments of the present invention, receiving terminal validity judgement unit can also comprise: receiving terminal initialization module 2 325 enters after the coil resonance of receiving terminal of power supply area through rectification circuit rectification, produces stable power supply, enables receiving terminal initialization;
The MCU of promutation module 2 326 receiving terminals controls a dummy load of receiving terminal access by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce promutation;
The MCU of telomutation module 2 327 receiving terminals unloads this dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce telomutation;
The MCU of the module of suddenling change for the third time 328 receiving terminals controls receiving terminal by GPIO and accesses this dummy load, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce sudden change for the third time;
The MCU of the 4th sudden change module 329 receiving terminals unloads this dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce the 4th sudden change;
Judge that legal module 2 3210 produces while changing in order for four times when transmitting terminal judges transmitting terminal coil both end voltage, judges that this receiving terminal is legal.
In embodiments of the present invention, by in the built-in dummy load of receiving terminal, this dummy load is the resistance of 5 ohm or 10 ohm, if access is legal load, receiving terminal MCU passes through GPIO) dummy load of control receiving terminal access, make receiving terminal resonator system produce electric current and voltage vibration, thereby drive transmitting terminal coil both end voltage to produce large variation, MCU unloads dummy load by controlling GPIO again, now resonator system can produce again the vibration of an electric current and voltage, thereby drive transmitting terminal coil both end voltage to produce larger variation, now, voltage produces once fluctuation, transmitting terminal coil both end voltage produces twice and changes in order, also can be by twice of continuous loading and unloading dummy load, three is by that analogy inferior, the less variation of transmitting terminal coil both end voltage when illegal load is put in difference.
Load removes or the completely judging unit 33 that charges is undergone mutation when collecting the generation of transmitting terminal coil both end voltage after receiving terminal validity judgement unit 32 is to legal receiving terminal continued power, judges that whether the magnitude of voltage of current collection is identical with the magnitude of voltage that holding state gathers; Be to judge that load is removed, transmitting terminal is stopped power supply, and enters holding state, otherwise judges that load charging is full, and transmitting terminal is stopped power supply, or enters trickle charge state, enters slow power supply.
In embodiments of the present invention, in to the process of load charging, suddenly change and judge whether load is removed in order by collecting the generation of transmitting terminal coil both end voltage, if the voltage gathering does not change in order, judge that load is still transmitting terminal power supply area on former limit, if the voltage gathering produces orderly variation, whether the value that the magnitude of voltage that continuation judgement collects collects with holding state is identical, judge that load is removed if identical, transmitting terminal inverter circuit quits work, and enters holding state; Judge that if not identical load charged, stop power supply, or judge that load enters the trickle charge state state of being near completion that charges, and enters slow power supply.
Judge that load charging is full or enter the specifically realization by the following method of trickle charge state:
The MCU of receiving terminal controls a dummy load of receiving terminal access by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce promutation;
The MCU of receiving terminal unloads this dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce telomutation;
The MCU of receiving terminal controls receiving terminal by GPIO and accesses this dummy load, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce sudden change for the third time;
The MCU of receiving terminal unloads this dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce the 4th sudden change;
In the time that transmitting terminal judges that transmitting terminal coil both end voltage produces four orderly variations, judge that this receiving terminal charging is full or enter trickle charge state.
In embodiments of the present invention, in the time that judgement is charged completely or is entered trickle charge state, equally can be by loading and unloading dummy load once, transmitting terminal coil both end voltage produces twice sudden change, also can be by twice of loading and unloading dummy load, three by that analogy inferior.
Fig. 5 shows a kind of system principle diagram of identifying pay(useful) load that the embodiment of the present invention provides, and details are as follows:
System mainly comprises transmitter unit and receiving element assembly:
Transmitter unit, comprises the compositions such as power module, inverter circuit, resonant element, sample circuit, MCU Main Processing Unit.
Receiving element, comprises the compositions such as rectification module, MCU Main Processing Unit, resonant element, sample circuit, dummy load unit, external loading unit.
Fig. 6 shows the system capacity transfer principle figure that the embodiment of the present invention provides, and Fig. 5 and Fig. 6 are respectively from the operation principle of circuit aspect and energy aspect embodiment system, and details are as follows:
Radio energy transmission system is made up of primary return and secondary loop two parts, and primary return is connected with simple power-supply system and power consumption equipment respectively with secondary loop, and wireless power transmission is realized by magnetic field in primary return and secondary loop; The effect of primary return is simple power-supply system to be produced after high frequency conversion in transmitting coil to high-frequency current, interrogation energy near the variation magnetic field of mechanism for picking in secondary loop primary return transmitting coil, through power inverter, high-frequency energy is converted into the form of energy that power consumption equipment needs, thereby has completed whole wireless power transmission process; Riches all the way, and ray circle can be multiple pick-up winding power supplies, power supply when realizing multiple power consumption equipment.
The present invention, by detecting that receiving terminal enters after power supply area, gathers transmitting terminal coil both end voltage, by judging whether voltage changes the validity that judges load in order, does not need to design modulation-demodulation circuit, and cost is low, requires low to the stability of a system.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a method of identifying pay(useful) load, is characterized in that, described method comprises:
Transmitting terminal has detected that receiving terminal enters power supply area, gathers transmitting terminal coil both end voltage;
Change if transmitting terminal coil both end voltage produces in order, judge that described receiving terminal is legal, to legal receiving terminal continued power; If transmitting terminal coil both end voltage does not produce orderly variation, judge that described receiving terminal is illegal, not to illegal receiving terminal power supply.
2. the method for claim 1, is characterized in that, changes if described transmitting terminal coil both end voltage produces in order, judges that described receiving terminal is legal, comprising:
Enter after the coil resonance of receiving terminal of power supply area through rectification circuit rectification, produce stable power supply, enable receiving terminal initialization;
The MCU of receiving terminal controls a dummy load of receiving terminal access by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce promutation;
The MCU of receiving terminal unloads described dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce telomutation;
In the time that transmitting terminal judges that transmitting terminal coil both end voltage produces twice orderly variation, judge that described receiving terminal is legal.
3. the method for claim 1, is characterized in that, changes if described transmitting terminal coil both end voltage produces in order, judges that described receiving terminal is legal, comprising:
Enter after the coil resonance of receiving terminal of power supply area through rectification circuit rectification, produce stable power supply, enable receiving terminal initialization;
The MCU of receiving terminal controls a dummy load of receiving terminal access by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce promutation;
The MCU of receiving terminal unloads described dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce telomutation;
The MCU of receiving terminal controls receiving terminal by GPIO and accesses described dummy load, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce sudden change for the third time;
The MCU of receiving terminal unloads described dummy load by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce the 4th sudden change;
In the time that transmitting terminal judges that transmitting terminal coil both end voltage produces four orderly variations, judge that described receiving terminal is legal.
4. the method for claim 1, is characterized in that, described to also comprising after legal receiving terminal continued power:
Undergo mutation when collecting the generation of transmitting terminal coil both end voltage, judge that whether the magnitude of voltage of current collection is identical with the magnitude of voltage that holding state gathers;
Be to judge that load is removed, transmitting terminal is stopped power supply, and enters holding state, otherwise judges that load charging is full, and transmitting terminal is stopped power supply, or enters trickle charge state, enters slow power supply.
5. method as claimed in claim 2 or claim 3, is characterized in that, described dummy load is the resistance of 5 ohm or 10 ohm.
6. a device of identifying pay(useful) load, is characterized in that, described device comprises:
Voltage acquisition unit, has detected that for transmitting terminal receiving terminal enters power supply area, gathers transmitting terminal coil both end voltage;
Receiving terminal validity judgement unit, if produce in order and change for transmitting terminal coil both end voltage, judges that described receiving terminal is legal, to legal receiving terminal continued power; If transmitting terminal coil both end voltage does not produce orderly variation, judge that described receiving terminal is illegal, not to illegal receiving terminal power supply.
7. device as claimed in claim 7, is characterized in that, described receiving terminal validity judgement unit comprises:
Receiving terminal initialization module one, for entering after the coil resonance of receiving terminal of power supply area through rectification circuit rectification, produces stable power supply, enables receiving terminal initialization;
Promutation module one, controls a dummy load of receiving terminal access for the MCU of receiving terminal by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce promutation;
Telomutation module one, unloads described dummy load for the MCU of receiving terminal by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce telomutation;
Judge legal module one, for judging that when transmitting terminal transmitting terminal coil both end voltage produces while changing in order for twice, judges that described receiving terminal is legal.
8. device as claimed in claim 7, is characterized in that, described receiving terminal validity judgement unit comprises:
Receiving terminal initialization module two, for entering after the coil resonance of receiving terminal of power supply area through rectification circuit rectification, produces stable power supply, enables receiving terminal initialization;
Promutation module two, controls a dummy load of receiving terminal access for the MCU of receiving terminal by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce promutation;
Telomutation module two, unloads described dummy load for the MCU of receiving terminal by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce telomutation;
The module of suddenling change for the third time, controls receiving terminal for the MCU of receiving terminal by GPIO and accesses described dummy load, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce sudden change for the third time;
The 4th sudden change module, unloads described dummy load for the MCU of receiving terminal by GPIO, makes receiving terminal resonator system drive transmitting terminal coil both end voltage to produce the 4th sudden change;
Judge legal module two, for judging that when transmitting terminal transmitting terminal coil both end voltage produces while changing in order for four times, judges that described receiving terminal is legal.
9. device as claimed in claim 7, is characterized in that, corresponding device also comprises:
Load removes or the completely judging unit that charges, for undergoing mutation when collecting the generation of transmitting terminal coil both end voltage, judge that whether the magnitude of voltage of current collection is identical with the magnitude of voltage that holding state gathers after receiving terminal validity judgement unit is to legal receiving terminal continued power; Be to judge that load is removed, transmitting terminal is stopped power supply, and enters holding state, otherwise judges that load charging is full, and transmitting terminal is stopped power supply, or enters trickle charge state, enters slow power supply.
10. device as claimed in claim 7 or 8, is characterized in that, described dummy load is the resistance of 5 ohm or 10 ohm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310157654.0A CN104124780A (en) | 2013-04-28 | 2013-04-28 | Method and device for identifying payload |
| PCT/CN2013/083343 WO2014176860A1 (en) | 2013-04-28 | 2013-09-11 | Method and device for identifying valid load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310157654.0A CN104124780A (en) | 2013-04-28 | 2013-04-28 | Method and device for identifying payload |
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| Publication Number | Publication Date |
|---|---|
| CN104124780A true CN104124780A (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310157654.0A Pending CN104124780A (en) | 2013-04-28 | 2013-04-28 | Method and device for identifying payload |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104124780A (en) |
| WO (1) | WO2014176860A1 (en) |
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| CN106786886B (en) * | 2016-12-22 | 2019-12-06 | 东南大学 | wireless charging system charging method based on load identification technology |
| CN108808882A (en) * | 2018-07-16 | 2018-11-13 | 中惠创智无线供电技术有限公司 | Wireless power control device and method |
| CN110601380A (en) * | 2019-09-16 | 2019-12-20 | 哈尔滨工程大学 | Control circuit and control method applied to standby mode switching of inductive power transmission system |
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| WO2014176860A1 (en) | 2014-11-06 |
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Application publication date: 20141029 |