CN202978381U - Light controllable wireless charging smart card and charging circuit thereof - Google Patents
Light controllable wireless charging smart card and charging circuit thereof Download PDFInfo
- Publication number
- CN202978381U CN202978381U CN2012207045300U CN201220704530U CN202978381U CN 202978381 U CN202978381 U CN 202978381U CN 2012207045300 U CN2012207045300 U CN 2012207045300U CN 201220704530 U CN201220704530 U CN 201220704530U CN 202978381 U CN202978381 U CN 202978381U
- Authority
- CN
- China
- Prior art keywords
- resistance
- output
- capacitor
- smart card
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 42
- 230000000087 stabilizing Effects 0.000 claims description 27
- 238000001914 filtration Methods 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
Images
Abstract
The utility model belongs to the wireless radio frequency technology and especially relates to a light controllable wireless charging smart card and a charging circuit thereof, wherein high-frequency electric signals received are orderly transmitted to a rectifier bridge and a filter unit through a resonant electromagnetic induction antenna at the most front end; as the electric signals received are not stable and even incapable of meeting the charging voltage requirement sometimes, a DC-DC processing unit at the rear end of the filter unit guarantees stable voltage output so as to guarantee reliable and effective charging of the battery of the smart card; and with corresponding software, a controllable light display unit can be further controlled to realize light control.
Description
Technical field
The utility model belongs to wireless radio-frequency, relates in particular to a kind of smooth controlled wireless charging smart card and charging circuit thereof.
Background technology
RFID (Radio Frequency Identification, radio-frequency (RF) identification) label is a kind of contactless automatic identification technology.It is automatically identified destination object and obtains related data by radiofrequency signal, need not to set up machinery between recognition system and specific objective or optics contacts, and identification work more need not manual intervention, therefore can work in various adverse circumstances.
Smart card (Smart Card) is the common name of the plastic clip (the normally size of a credit card) that is embedded with microchip.Smart card is divided into initiatively two kinds, card and passive card, initiatively blocks self with powered battery, generally is made of battery, RFID chip and antenna.Initiatively the working power of smart card is supplied with by internal cell fully, required radio-frequency (RF) energy when the energy supply of battery also partly is converted to smart card and reader communication simultaneously.But the battery of existing smart card can only disposablely use, and can't charge and change, so be subjected to the useful life of smart card from the impact of charged pool very large.
The utility model content
The purpose of this utility model is to provide a kind of wireless charging circuit of smart card, and existing smart card battery can only disposablely use to solve, smart card short problem in useful life.
The utility model is achieved in that the wireless charging circuit of smart card, is connected with battery, comprising:
Receive the resonant electromagnetic induction antenna of the high frequency electrical signal of described smart card periphery;
The high frequency electrical signal that is connected with described resonant electromagnetic induction antenna, described resonant electromagnetic induction antenna is received carries out the rectifier bridge that rectification is processed;
Be connected with the output of described rectifier bridge, the high frequency electrical signal after rectification is carried out the filter unit that filtering is processed;
Be connected with the output of described filter unit, the signal of telecommunication of described filter unit output is changed and to the DC-DC processing unit of described battery stable output charging voltage;
The charging indicating member that is connected between the output and described battery of described DC-DC processing unit, the charged state of described battery is shown.
Particularly, described filter unit comprises capacitor C 1 and capacitor C 2; Described capacitor C 1 and capacitor C 2 are attempted by respectively between the output and ground of described rectifier bridge, and described capacitor C 1, capacitor C 2 are the output of described filter unit with the end that connects altogether of described rectification bridge output end.
particularly, described DC-DC processing unit comprises boost voltage stabilizing chip U1, inductance L 1, resistance R 1, resistance R 2, capacitor C 3, capacitor C 4 and capacitor C 5, the power input VIN of the described voltage stabilizing chip U1 that boosts, Enable Pin EN, low pressure latched comparator input UVLO and energy saver mode control end PS connect the output of described filter unit simultaneously, described inductance L 1 is connected between the inductor link L and power input VIN of the described voltage stabilizing chip U1 that boosts, described capacitor C 3 is connected between the power input VIN and ground of the described voltage stabilizing chip U1 that boosts, the power end VAUX of the described voltage stabilizing chip U1 that boosts is by described capacitor C 4 ground connection, the power supply ground end PGND of the described voltage stabilizing chip U1 that boosts, logically hold all ground connection of GND and output voltage feedback end FB, described resistance R 2 and resistance R 1 are serially connected between the output VOUT and ground of the described voltage stabilizing chip U1 that boosts, and the public connecting end of described resistance R 2 and resistance R 1 is ground connection also, described capacitor C 5 is connected between the output VOUT and ground of the described voltage stabilizing chip U1 that boosts, simultaneously, the described output VOUT that boosts voltage stabilizing chip U1 is the output of described DC-DC processing unit, be connected with described charging indicating member.
Particularly, described charging indicating member comprises resistance R 3, light-emitting diode D1 and capacitor C 6; The first end of described resistance R 3 is connected with the output of described DC-DC processing unit, the anode of the second described light-emitting diode D1 of termination of described resistance R 3, the negative electrode of described light-emitting diode D1 connects the positive pole of described battery, described capacitor C 6 is connected between the negative electrode and ground of described light-emitting diode D1, the minus earth of described battery.
More specifically, described wireless charging circuit also comprises a controllable light display unit that is connected between described battery and described smart card main control chip U2, and described controllable light display unit comprises photodiode D2, resistance R 4, resistance R 5, resistance R 6, inductance L 2, inductance L 3 and inductance L 4; Described photodiode D2 places near described light-emitting diode D1, the anode of described photodiode D2 connects the positive pole of described battery, the negative electrode of described photodiode D2 meets the output OUT of described smart card main control chip U2 successively by described resistance R 4, inductance L 3, inductance L 4, described resistance R 5, resistance R 6 are serially connected between the positive pole and ground of described battery successively, and the power end VDD of described smart card main control chip U2 connects the public connecting end of described resistance R 5 and resistance R 6 by described inductance L 2.
Another purpose of the present utility model is to provide a kind of smooth controlled wireless charging smart card, and it comprises main control chip, antenna and battery, and comprises the described wireless charging circuit of above-mentioned arbitrary form.
Light controlled wireless charging smart card and charging circuit thereof that the utility model provides, resonant electromagnetic induction antenna by foremost sends the high frequency electrical signal that receives to rectifier bridge and filter unit successively, due to the electric signal power that receives and unstable, even sometimes do not reach the charging voltage requirement, therefore, guarantee voltage stabilization output at filter unit rear end employing DC-DC processing unit, to guarantee that the battery of smart card is carried out reliable and effective charging, being equipped with corresponding software can also further control the controllable light display unit, realizes that light is controlled.
Description of drawings
Fig. 1 is the structured flowchart of the wireless charging circuit of the smart card that provides of the utility model the first embodiment;
Fig. 2 is the electronic devices and components exemplary plot of the wireless charging circuit of the smart card that provides of the utility model the second embodiment;
Fig. 3 is the electronic devices and components exemplary plot of the wireless charging circuit of the smart card that provides of the utility model the 3rd embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Fig. 1 is the structured flowchart of the wireless charging circuit of the smart card that provides of the utility model the first embodiment; For convenience of explanation, only show the content relevant to the utility model embodiment, as shown in the figure:
A kind of wireless charging circuit of smart card is connected with battery, comprises the resonant electromagnetic induction antenna 100, rectifier bridge 200, filter unit 300, DC-DC processing unit 400 and the charging indicating member 500 that are connected successively;
Wherein, resonant electromagnetic induction antenna 100 is used for receiving the high frequency electrical signal of smart card periphery; The high frequency electrical signal that rectifier bridge 200 is connected with resonant electromagnetic induction antenna 100, resonant electromagnetic induction antenna 100 is received carries out the rectification processing; Filter unit 300 is connected with the output 2 of rectifier bridge 200, the high frequency electrical signal after rectification is carried out the filtering processing; DC-DC processing unit 400 is connected with the output of filter unit 300, the signal of telecommunication of filter unit 300 outputs is changed and to the charging voltage of described battery stable output; Charging indicating member 500 is connected between the output and battery of DC-DC processing unit 400, the charged state of battery is shown.
Fig. 2 is the electronic devices and components exemplary plot of the wireless charging circuit of the smart card that provides of the utility model the second embodiment; For convenience of explanation, only show the content relevant to the utility model embodiment, as shown in the figure:
As an embodiment of the present utility model, filter unit 300 comprises capacitor C 1 and capacitor C 2; Capacitor C 1 and capacitor C 2 are attempted by respectively between the output 2 and ground of rectifier bridge 200, and capacitor C 1, capacitor C 2 are the output of filter unit 300 with the end that connects altogether of rectification bridge output end 2 simultaneously.
as an embodiment of the present utility model, DC-DC processing unit 400 comprises boost voltage stabilizing chip U1, inductance L 1, resistance R 1, resistance R 2, capacitor C 3, capacitor C 4 and capacitor C 5, the power input VIN of voltage stabilizing chip U1 boosts, Enable Pin EN, low pressure latched comparator input UVLO and energy saver mode control end PS connect the output of filter unit 300 simultaneously, inductance L 1 is connected between the inductor link L and power input VIN of the voltage stabilizing chip U1 that boosts, capacitor C 3 is connected between the power input VIN and ground of the voltage stabilizing chip U1 that boosts, boost the power end VAUX of voltage stabilizing chip U1 by capacitor C 4 ground connection, the power supply ground end PGND of voltage stabilizing chip U1 boosts, logically hold all ground connection of GND and output voltage feedback end FB, resistance R 2 and resistance R 1 are serially connected between the output VOUT and ground of the voltage stabilizing chip U1 that boosts, and the public connecting end of resistance R 2 and resistance R 1 is ground connection also, capacitor C 5 is connected between the output VOUT and ground of the voltage stabilizing chip U1 that boosts, simultaneously, the output VOUT of voltage stabilizing chip U1 of boosting is the output of DC-DC processing unit 400, be connected with charging indicating member 500.
As an embodiment of the present utility model, charging indicating member 500 comprises resistance R 3, light-emitting diode D1 and capacitor C 6; The first end of resistance R 3 is connected with the output of DC-DC processing unit 400, the anode of the second termination light-emitting diode D1 of resistance R 3, and the negative electrode of light-emitting diode D1 connects the positive pole of battery Battery, and capacitor C 6 is connected between the negative electrode and ground of light-emitting diode D1.By the light-emitting diode D1 in this charging indicating member 500, can to whether indicating for battery Battery charging.
Fig. 3 is the electronic devices and components exemplary plot of the wireless charging circuit of the smart card that provides of the utility model the 3rd embodiment, for convenience of explanation, only show the content relevant to the utility model embodiment, as figure shows: the wireless charging circuit that the utility model embodiment provides, only be with above-described embodiment difference, newly increased a controllable light display unit 600 that is connected between battery Battery and smart card main control chip U2, controllable light display unit 600 by the present embodiment provides can carry out controlled in wireless to the break-make of photodiode D2.
This controllable light display unit 600 comprises photodiode D2, resistance R 4, resistance R 5, resistance R 6, inductance L 2, inductance L 3 and inductance L 4; Photodiode D2 places near light-emitting diode D1, the anode of photodiode D2 connects the positive pole of battery Battery, the negative electrode of photodiode D2 meets the output OUT of smart card main control chip U2 successively by resistance R 4, inductance L 3, inductance L 4, resistance R 5, resistance R 6 are serially connected between the positive pole and ground of battery Battery successively, and the power end VDD of smart card main control chip U2 is by the public connecting end of inductance L 2 connecting resistance R5 and resistance R 6.
The utility model embodiment also provides a kind of smart card, comprises main control chip, antenna and battery, and comprises the described wireless charging circuit as above-mentioned arbitrary embodiment.
Light controlled wireless charging smart card and charging circuit thereof that the utility model provides, resonant electromagnetic induction antenna by foremost sends the high frequency electrical signal that receives to rectifier bridge and filter unit successively, due to the electric signal power that receives and unstable, even sometimes do not reach the charging voltage requirement, therefore, guarantee voltage stabilization output at filter unit rear end employing DC-DC processing unit, to guarantee that the battery of smart card is carried out reliable and effective charging, being equipped with corresponding software can also further control the charging indicating member, realizes that light is controlled.In addition, by the setting to main control chip U2 and software kit, can also realize that transfer of data, data tampering are reported to the police, the read-write scope is changeable and the function of active mode and passive mode switching etc.
The above is only preferred embodiment of the present utility model, not in order to limit the utility model, although with reference to previous embodiment, the utility model has been carried out more detailed explanation, for a person skilled in the art, it still can be modified or part technical characterictic wherein is equal to replacement the technical scheme that aforementioned each embodiment puts down in writing.All any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. the wireless charging circuit of a smart card, be connected with battery, it is characterized in that, described wireless charging circuit comprises:
Receive the resonant electromagnetic induction antenna of the high frequency electrical signal of described smart card periphery;
The high frequency electrical signal that is connected with described resonant electromagnetic induction antenna, described resonant electromagnetic induction antenna is received carries out the rectifier bridge that rectification is processed;
Be connected with the output of described rectifier bridge, the high frequency electrical signal after rectification is carried out the filter unit that filtering is processed;
Be connected with the output of described filter unit, the signal of telecommunication of described filter unit output is changed and to the DC-DC processing unit of described battery stable output charging voltage;
The charging indicating member that is connected between the output and described battery of described DC-DC processing unit, the charged state of described battery is shown.
2. wireless charging circuit as claimed in claim 1, is characterized in that, described filter unit comprises capacitor C 1 and capacitor C 2;
Described capacitor C 1 and capacitor C 2 are attempted by respectively between the output and ground of described rectifier bridge, and described capacitor C 1, capacitor C 2 are the output of described filter unit with the end that connects altogether of described rectification bridge output end.
3. wireless charging circuit as claimed in claim 1 or 2, is characterized in that, described DC-DC processing unit comprises boost voltage stabilizing chip U1, inductance L 1, resistance R 1, resistance R 2, capacitor C 3, capacitor C 4 and capacitor C 5;
the power input VIN of the described voltage stabilizing chip U1 that boosts, Enable Pin EN, low pressure latched comparator input UVLO and energy saver mode control end PS connect the output of described filter unit simultaneously, described inductance L 1 is connected between the inductor link L and power input VIN of the described voltage stabilizing chip U1 that boosts, described capacitor C 3 is connected between the power input VIN and ground of the described voltage stabilizing chip U1 that boosts, the power end VAUX of the described voltage stabilizing chip U1 that boosts is by described capacitor C 4 ground connection, the power supply ground end PGND of the described voltage stabilizing chip U1 that boosts, logically hold all ground connection of GND and output voltage feedback end FB, described resistance R 2 and resistance R 1 are serially connected between the output VOUT and ground of the described voltage stabilizing chip U1 that boosts, and the public connecting end of described resistance R 2 and resistance R 1 is ground connection also, described capacitor C 5 is connected between the output VOUT and ground of the described voltage stabilizing chip U1 that boosts, simultaneously, the described output VOUT that boosts voltage stabilizing chip U1 is the output of described DC-DC processing unit, be connected with described charging indicating member.
4. wireless charging circuit as claimed in claim 3, is characterized in that, described charging indicating member comprises resistance R 3, light-emitting diode D1 and capacitor C 6;
The first end of described resistance R 3 is connected with the output of described DC-DC processing unit, the anode of the second described light-emitting diode D1 of termination of described resistance R 3, the negative electrode of described light-emitting diode D1 connects the positive pole of described battery, and described capacitor C 6 is connected between the negative electrode and ground of described light-emitting diode D1.
5. wireless charging circuit as claimed in claim 4, it is characterized in that, described wireless charging circuit also comprises a controllable light display unit that is connected between described battery and described smart card main control chip U2, and described controllable light display unit comprises photodiode D2, resistance R 4, resistance R 5, resistance R 6, inductance L 2, inductance L 3 and inductance L 4;
Described photodiode D2 places near described light-emitting diode D1, the anode of described photodiode D2 connects the positive pole of described battery, the negative electrode of described photodiode D2 meets the output OUT of described smart card main control chip U2 successively by described resistance R 4, inductance L 3, inductance L 4, described resistance R 5, resistance R 6 are serially connected between the positive pole and ground of described battery successively, and the power end VDD of described smart card main control chip U2 connects the public connecting end of described resistance R 5 and resistance R 6 by described inductance L 2.
6. a smart card, comprise main control chip, antenna and battery, it is characterized in that, described smart card also comprises as the described wireless charging circuit of claim 1-5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207045300U CN202978381U (en) | 2012-06-14 | 2012-12-07 | Light controllable wireless charging smart card and charging circuit thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220281230.6 | 2012-06-14 | ||
| CN201220281230 | 2012-06-14 | ||
| CN2012207045300U CN202978381U (en) | 2012-06-14 | 2012-12-07 | Light controllable wireless charging smart card and charging circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202978381U true CN202978381U (en) | 2013-06-05 |
Family
ID=48519406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207045300U Expired - Fee Related CN202978381U (en) | 2012-06-14 | 2012-12-07 | Light controllable wireless charging smart card and charging circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202978381U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103366536A (en) * | 2013-06-24 | 2013-10-23 | 国家电网公司 | On-line power switch cabinet monitoring system and monitoring method thereof |
| CN104734314A (en) * | 2015-03-05 | 2015-06-24 | 北京智付融汇科技有限公司 | Active smart card |
| CN105811492A (en) * | 2014-12-31 | 2016-07-27 | 北京华大智宝电子系统有限公司 | Contactless smart card |
| GB2547208A (en) * | 2016-02-09 | 2017-08-16 | Drayson Tech (Europe) Ltd | RF energy meter |
| CN107545293A (en) * | 2017-09-18 | 2018-01-05 | 北京中电华大电子设计有限责任公司 | The contactless smart card chip implementing method and structure of a kind of compatible wireless charging |
| CN108564154A (en) * | 2018-04-23 | 2018-09-21 | 佛山市梅雨科技有限公司 | A kind of intelligent interaction chest card |
| CN111130222A (en) * | 2018-10-30 | 2020-05-08 | 北京小米移动软件有限公司 | Wireless charging power supply circuit and method and electronic equipment |
-
2012
- 2012-12-07 CN CN2012207045300U patent/CN202978381U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103366536A (en) * | 2013-06-24 | 2013-10-23 | 国家电网公司 | On-line power switch cabinet monitoring system and monitoring method thereof |
| CN103366536B (en) * | 2013-06-24 | 2016-08-10 | 国家电网公司 | A kind of power switch cabinet on-line monitoring system and monitoring method thereof |
| CN105811492A (en) * | 2014-12-31 | 2016-07-27 | 北京华大智宝电子系统有限公司 | Contactless smart card |
| CN104734314A (en) * | 2015-03-05 | 2015-06-24 | 北京智付融汇科技有限公司 | Active smart card |
| GB2547208A (en) * | 2016-02-09 | 2017-08-16 | Drayson Tech (Europe) Ltd | RF energy meter |
| GB2547208B (en) * | 2016-02-09 | 2018-06-06 | Drayson Tech Europe Ltd | RF Energy Meter |
| CN107545293A (en) * | 2017-09-18 | 2018-01-05 | 北京中电华大电子设计有限责任公司 | The contactless smart card chip implementing method and structure of a kind of compatible wireless charging |
| CN108564154A (en) * | 2018-04-23 | 2018-09-21 | 佛山市梅雨科技有限公司 | A kind of intelligent interaction chest card |
| CN108564154B (en) * | 2018-04-23 | 2021-06-11 | 上海光原谷信息技术有限公司 | Intelligent interaction chest card |
| CN111130222A (en) * | 2018-10-30 | 2020-05-08 | 北京小米移动软件有限公司 | Wireless charging power supply circuit and method and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202978381U (en) | Light controllable wireless charging smart card and charging circuit thereof | |
| CN201830468U (en) | Non-contact communication terminal | |
| CN106208399B (en) | Wireless power receiver and electronic device including the wireless power receiver | |
| CN203217613U (en) | UHF RFID passive label chip power supply circuit | |
| CN107911147B (en) | Control circuit for NFC near field communication and smart card | |
| CN101937519A (en) | Wirelessly chargeable RFID electronic tag | |
| KR20130095658A (en) | Nfc for mobile telephone | |
| CN202331539U (en) | High-frequency passive RFID (Radio Frequency Identification) analog front end circuit | |
| CN103561139A (en) | Mobile phone case for mobile phone wireless charging | |
| CN201765603U (en) | Radio frequency identification (RFID) device supplied with power by micro energy | |
| CN103731046A (en) | Dynamic rectifying control circuit, passive radio frequency identification (RFID) and dynamic rectifying control method | |
| CN204203993U (en) | There is the double-frequency card of wireless charging function | |
| CN201741174U (en) | RFID electronic tag capable of being charged wirelessly | |
| CN202257586U (en) | Radio frequency identification card reading device | |
| CN208654835U (en) | A kind of solar powered low-power consumption RFID active electronic label | |
| CN204143468U (en) | A kind of RFID read-write circuit | |
| CN202475248U (en) | Power supply conversion apparatus | |
| CN203299859U (en) | Handheld RFID reader-writer | |
| CN109950982A (en) | Intelligent certificate card with wireless current-taking function | |
| CN204244080U (en) | A kind of power switch circuit of radio-frequency card | |
| CN203882331U (en) | Wireless-induction-powered prepaid SIM card with display screen | |
| CN203872073U (en) | High frequency antenna power supply circuit | |
| CN204408421U (en) | Based on the NFC mobile phone Circuits System of Adaptive matching circuit | |
| CN214626467U (en) | Police service intelligence glasses non-contact wireless charging device | |
| CN105071483A (en) | Charging circuit capable of displaying charging states and smart band charger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20161207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |