CN201035604Y - Radio frequency identification card for portable equipment - Google Patents
Radio frequency identification card for portable equipment Download PDFInfo
- Publication number
- CN201035604Y CN201035604Y CNU2007201198814U CN200720119881U CN201035604Y CN 201035604 Y CN201035604 Y CN 201035604Y CN U2007201198814 U CNU2007201198814 U CN U2007201198814U CN 200720119881 U CN200720119881 U CN 200720119881U CN 201035604 Y CN201035604 Y CN 201035604Y
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- circuit
- frequency identification
- rfid
- power supply
- radio frequency
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Abstract
The utility model provides a radio frequency recognition card which is used for portable equipment. The radio frequency recognition card comprises a radio frequency recognition antenna, a rectification circuit and a radio frequency identification circuit. The radio frequency recognition antenna obtains the energy through induced current, and supplies power to the radio frequency identification circuit after rectification; wherein, the power of the portable equipment is connected with the radio frequency identification circuit and is used to supply power to the radio frequency identification circuit. The proposal is adopted, the utility model supplies the power to the radio frequency identification card through adopting the power of the portable equipment, the power stability of a RFID power is improved, and relative to the radio frequency identification card which adopts the passive operation way on the portable equipment, the induction distance is greatly improved.
Description
Technical field
The utility model relates to REID, in particular, and a kind of improvement that is used for the radio-frequency identification card of portable equipment.
Background technology
RFID (radio frequency identification, radio-frequency (RF) identification) is one and utilizes radiofrequency signal to realize that by space coupling (as alternating magnetic field or electromagnetic field) contactless information transmission and the information of passing through to be transmitted reach the technology of identifying purpose.
At present, rfid card (RFID Tag, radio-frequency identification card or RFID tag) is widely used, induction type electronic wafer or closely connect card, contactless card, non-contact card, electronic tag, electronic bar code or the like for example, but all be an independent card mainly; Rfid card end chip can adopt passive working method, relies on the energy that induction current obtained to send out the product information (Passive Tag, passive label or passive label) that is stored in the chip, and distance of reaction is shorter; Also can adopt active working method, initiatively send the signal (Active Tag, active label or active tag) of a certain frequency, the more passive working method of distance of reaction is long slightly; After plug-in reader reads information and decoding, deliver to CIS and carry out the relevant data processing.
Rfid card is integrated into portable equipments such as consumption electronic product with the rfid card end in the application of portable equipment as shown in Figure 1 in the prior art, adopts passive working method, and working power derives from the energy that card reader radiates, and distance of reaction is shorter.
Therefore, there is defective in prior art, needs to improve.
The utility model content
The purpose of this utility model is to provide a kind of radio-frequency identification card that is used for portable equipment, and long distance of reaction can be arranged.
The technical solution of the utility model is as follows:
A kind of radio-frequency identification card that is used for portable equipment, it comprises RFID antenna, rectification circuit and rfid circuit, RFID antenna obtains energy by induction current, through powering to rfid circuit after the rectification circuit rectification; Wherein, the power supply of described portable equipment is connected with described rfid circuit, is used for to described rfid circuit power supply.
Described radio-frequency identification card, wherein, described power supply is connected with described rfid circuit by a unidirectional turning circuit.
Described radio-frequency identification card, wherein, described rectification circuit is connected with described power supply, and the dc level signal of described rectification circuit is as the trigger pip of described power supply.
Described radio-frequency identification card, wherein, the control circuit of described portable equipment is connected with described radio-frequency identification card with described power supply respectively; When described rfid circuit receives the dc level signal of described rectification circuit, send look-at-me, send control signal by it and control described power supply to described rfid circuit power supply to described control circuit.
Adopt such scheme, the utility model is the radio-frequency identification card power supply by the power supply that adopts portable equipment, has improved RFID power supply stability, and with respect to the radio-frequency identification card that adopts passive working method on portable equipment, distance of reaction greatly improves.
Description of drawings
Fig. 1 is the prior art synoptic diagram;
Fig. 2 is an annexation synoptic diagram of the present utility model;
Fig. 3 is the first embodiment synoptic diagram of the present utility model;
Fig. 4 is the second embodiment synoptic diagram of the present utility model.
Embodiment
Below preferred embodiment of the present utility model is described in detail.
As shown in Figure 2, the utility model provides a kind of radio-frequency identification card that is used for portable equipment, it comprises RFID antenna, rectification circuit and rfid circuit, and RFID antenna obtains energy by induction current, through powering to rfid circuit after the rectification circuit rectification; The power supply of described portable equipment is connected with described rfid circuit, is used for to described rfid circuit power supply.Wherein, portable equipment can be mobile phone, music player, palm PC (PDA) or other portable type electronic product, and its power supply can be all kinds of batteries.
Wherein, the power supply of described portable equipment can be connected with described rfid circuit by a unidirectional turning circuit.The power supply of described portable equipment can directly be connected with described rfid circuit, but be more preferably, by being connected to described rfid circuit behind the unidirectional turning circuit, prevented that so described rfid circuit from might obtain bigger induction current in induction card reader process, anti-power supply of irritating to portable equipment causes the destruction to the portable equipment power supply.Described unidirectional turning circuit can be that diode or other possess the element or the circuit of unidirectional conduction property, and the utility model does not limit this.
First embodiment as shown in Figure 3, radio-frequency identification card provided by the utility model, its rectification circuit can be connected with described power supply, with the dc level signal of the described rectification circuit trigger pip as described power supply.Portable equipment partly powers for RFID at ordinary times, and when the near card reader of rfid card termination, the RFID antenna induction is powered to rfid card after overcommutation to the energy from card reader; The later DC level of rectification is simultaneously removed to trigger the portable equipment power supply as trigger pip and is powered to rfid card.Because the distance of reaction of rfid card is much larger than the needed distance of rfid card duty, rfid card is when sensing signal like this, the electric current of this signal also is not enough to the operation that the confession rfid card reads and writes data, but the power supply that can be triggered portable equipment as trigger pip is powered to rfid card, like this, the work distance of reaction of rfid card has just increased a lot.
Second embodiment as shown in Figure 4, radio-frequency identification card provided by the utility model can be connected with described power supply the control circuit of described portable equipment respectively with described radio-frequency identification card; When described rfid circuit receives the dc level signal of described rectification circuit, send look-at-me, send control signal by it and control described power supply to described rfid circuit power supply to described control circuit.So also can improve the distance of rfid card read-write induction.
When the rfid card end being integrated into portable equipments such as consumption electronic product, come partly to power, can improve operating distance greatly to RFID by the power supply (as battery) that utilizes portable equipment.For example, a certain portable equipment product, when only using RFID antenna induction energy as power supply, operating distance is greatly about 2cm; Adopt the utility model scheme, the RFID circuit is constant, and operating distance is brought up to more than the 4cm, and distance of reaction has improved above 100%, increases in card reader under the situation of emissive power, and the rfid card on the portable equipment can more carry out reading and writing data in the far range.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (4)
1. radio-frequency identification card that is used for portable equipment, it comprises RFID antenna, rectification circuit and rfid circuit, RFID antenna obtains energy by induction current, through powering to rfid circuit after the rectification circuit rectification; It is characterized in that the power supply of described portable equipment is connected with described rfid circuit, be used for to described rfid circuit power supply.
2. radio-frequency identification card according to claim 1 is characterized in that, described power supply is connected with described rfid circuit by a unidirectional turning circuit.
3. radio-frequency identification card according to claim 2 is characterized in that, described rectification circuit is connected with described power supply, and the dc level signal of described rectification circuit is as the trigger pip of described power supply.
4. radio-frequency identification card according to claim 2 is characterized in that, the control circuit of described portable equipment is connected with described radio-frequency identification card with described power supply respectively; When described rfid circuit receives the dc level signal of described rectification circuit, send look-at-me, send control signal by it and control described power supply to described rfid circuit power supply to described control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201198814U CN201035604Y (en) | 2007-04-28 | 2007-04-28 | Radio frequency identification card for portable equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201198814U CN201035604Y (en) | 2007-04-28 | 2007-04-28 | Radio frequency identification card for portable equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201035604Y true CN201035604Y (en) | 2008-03-12 |
Family
ID=39196495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201198814U Expired - Fee Related CN201035604Y (en) | 2007-04-28 | 2007-04-28 | Radio frequency identification card for portable equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201035604Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102742294A (en) * | 2010-02-04 | 2012-10-17 | 康尔福盛303公司 | Inventory control device |
| WO2021134559A1 (en) * | 2019-12-31 | 2021-07-08 | 李庆远 | Wireless power supply semi-active radio frequency card |
-
2007
- 2007-04-28 CN CNU2007201198814U patent/CN201035604Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102742294A (en) * | 2010-02-04 | 2012-10-17 | 康尔福盛303公司 | Inventory control device |
| WO2021134559A1 (en) * | 2019-12-31 | 2021-07-08 | 李庆远 | Wireless power supply semi-active radio frequency card |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131127 Address after: 518052 Guangdong province Shenzhen city Nanshan District high tech park, North Central Avenue, North Song Ping Road No. 1 building fourteen South Liteon room 1402 Patentee after: SHENZHEN CHUANGBAI COMMUNICATION TECHNOLOGY CO., LTD. Address before: 518000 Guangdong city of Shenzhen province Futian District Yitian garden building two floor 201 people stippling Patentee before: Zhao Zhixin |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20160428 |