CN104636691A - Transponder for RFID (radio frequency identification) system - Google Patents
Transponder for RFID (radio frequency identification) system Download PDFInfo
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- CN104636691A CN104636691A CN201310563036.6A CN201310563036A CN104636691A CN 104636691 A CN104636691 A CN 104636691A CN 201310563036 A CN201310563036 A CN 201310563036A CN 104636691 A CN104636691 A CN 104636691A
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Abstract
The invention discloses a transponder for an RFID (radio frequency identification) system. The transponder for the RFID system comprises an inductance coil, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a first diode, a second diode, a third diode, a fourth diode, a first resistor, a second resistor, a third resistor, an integrated voltage stabilizer, a singlechip microcomputer chip and a switch tube; and a first end of the inductance coil is respectively connected with a first end of the first capacitor, a negative pole of the first diode and a positive pole of the fourth diode. By a rectifying circuit and the integrated voltage stabilizer of the transponder, power loss can be reduced, radio-frequency components in current can be filtered out by the second capacitor of the transponder, voltage can be regulated by the integrated voltage stabilizer of the transponder, and the singlechip microcomputer chip of the RFID system can work normally.
Description
Technical field
The present invention relates to a kind of transponder, particularly relate to a kind of transponder of rfid system.
Background technology
Rfid system adopts advanced automatic identification and data collection technology, and radiowave can be utilized to carry out high efficiency automatic identification to people, animal and goods.The rfid system course of work is after connecting rfid interrogator power supply, circuit generates signals is transferred to the antenna of the read write line of rfid system after power amplifier amplifies, the antenna of rfid system produces high frequency strong-electromagnetic field, when the transponder of rfid system is when the antenna of the read write line of rfid system, rfid system transponder produce voltage by electromagnetic induction, as the power supply of single-chip microcomputer, realize energy transmission.It is high and can not the problem of radio-frequency component in filtering electric current to there is power attenuation in the transponder of tradition rfid system, and tradition rfid system transponder can not make the singlechip chip in the transponder of rfid system normally work.
Summary of the invention
Object of the present invention is just the transponder providing a kind of rfid system in order to solve the problem.
In order to achieve the above object, present invention employs following technical scheme:
A transponder for rfid system, comprises telefault, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, first diode, second diode, 3rd diode, 4th diode, first resistance, second resistance, 3rd resistance, integrated regulator, singlechip chip and switching tube, the first end of described telefault respectively with the first end of described first electric capacity, the negative pole of described first diode is connected with the positive pole of described 4th diode, the second end of described telefault respectively with the second end of described first electric capacity, the collector of described switching tube, the negative pole of described second diode is connected with the positive pole of described 3rd diode, ground connection after the positive pole of described first diode is connected with the positive pole of described second diode, the negative pole of described 4th diode respectively with the negative pole of described 3rd diode, the first end of described second electric capacity is connected with the input end of described integrated voltage-stabilized pipe, the second end of described second electric capacity respectively with the earth terminal of described integrated voltage-stabilized pipe, ground connection after the first end of described first resistance is connected with the first end of described 3rd electric capacity, the output terminal of described integrated voltage-stabilized pipe respectively with the second end of described 3rd electric capacity, the first end of described 4th electric capacity is connected with the power end of described singlechip chip, second end of described first resistance is connected with described second end of the 4th electric capacity and the reset terminal of described singlechip chip respectively, the serial output terminal of described singlechip chip is connected with the first end of described second resistance, second end of described second resistance is connected with the base stage of described switching tube, the output terminal of the oscillator inverting amplifier of described singlechip chip is connected with the first end of described 5th electric capacity and the first end of described 7th electric capacity respectively, the oscillator inverting amplifier of described singlechip chip and the input end of internal clock generator are connected with the first end of described 6th electric capacity and the second end of described 7th electric capacity respectively, second end of described 5th electric capacity is connected with the second end of described 6th electric capacity and the first end of described 3rd resistance respectively, second end of described 3rd resistance is connected rear ground connection respectively with the earth terminal of described singlechip chip and the emitter of described switching tube.
Beneficial effect of the present invention is:
The present invention is a kind of transponder of rfid system, rectification circuit and the integrated voltage-stabilized pipe of this transponder can reduce power attenuation, radio-frequency component in second electric capacity energy filtering electric current of this transponder, the integrated voltage-stabilized pipe of this transponder can also adjust voltage, and the singlechip chip in the transponder of rfid system is normally worked.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the transponder of a kind of rfid system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the transponder of a kind of rfid system of the present invention, comprises telefault L, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, 4th electric capacity C4, 5th electric capacity C5, 6th electric capacity C6, 7th electric capacity C7, first diode D1, second diode D2, 3rd diode D3, 4th diode D4, first resistance R1, second resistance R2, 3rd resistance R3, integrated regulator IC1, the first end of singlechip chip IC2 and switching tube W, telefault L respectively with the first end of the first electric capacity C1, the negative pole of the first diode D1 is connected with the positive pole of the 4th diode D4, second end of telefault L respectively with second end of the first electric capacity C1, the collector of switching tube W, the negative pole of the second diode D2 is connected with the positive pole of the 3rd diode D3, ground connection after the positive pole of the first diode D1 is connected with the positive pole of the second diode D2, the negative pole of the 4th diode D4 respectively with the negative pole of the 3rd diode D3, the first end of the second electric capacity C2 is connected with the input end of integrated voltage-stabilized pipe IC1, second end of the second electric capacity C2 respectively with the earth terminal of integrated voltage-stabilized pipe IC1, ground connection after the first end of the first resistance R1 is connected with the first end of the 3rd electric capacity C3, the output terminal of integrated voltage-stabilized pipe IC1 respectively with second end of the 3rd electric capacity C3, the first end of the 4th electric capacity C4 is connected with the power end of singlechip chip IC2, second end of the first resistance R1 is connected with second end of the 4th electric capacity C4 and the reset terminal of singlechip chip IC2 respectively, the serial output terminal of singlechip chip IC2 is connected with the first end of the second resistance R2, second end of the second resistance R2 is connected with the base stage of switching tube W, the output terminal of the oscillator inverting amplifier of singlechip chip IC2 is connected with the first end of the 5th electric capacity C5 and the first end of the 7th electric capacity C7 respectively, the oscillator inverting amplifier of singlechip chip IC2 and the input end of internal clock generator are connected with the first end of the 6th electric capacity C6 and second end of the 7th electric capacity C7 respectively, second end of the 5th electric capacity C5 is connected with second end of the 6th electric capacity C6 and the first end of the 3rd resistance R3 respectively, second end of the 3rd resistance R3 is connected rear ground connection respectively with the earth terminal of singlechip chip IC2 and the emitter of switching tube W.
Principle of work of the present invention is as follows:
The model of singlechip chip IC2 of the present invention is AT89C2051, switching tube W is connected with the serial output terminal of singlechip chip IC2 by the second resistance R2, under the control of the coded signal of singlechip chip IC2 output, switching tube W conducting when high level comes, low level by time, to make with telefault L and the impedance of the load circuit connect changes, the change of load circuit impedance causes retroaction by the mutual inductance effect of telefault L to the telefault of reader in rfid system, thus cause the change of reader telefault impedance loop in rfid system, with this realize transponder data change with reader data in rfid system change synchronous, therefore realize data and pass to reader in rfid system by transponder.
Claims (1)
1., with a transponder for rfid system, it is characterized in that: comprise telefault, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, first diode, second diode, 3rd diode, 4th diode, first resistance, second resistance, 3rd resistance, integrated regulator, singlechip chip and switching tube, the first end of described telefault respectively with the first end of described first electric capacity, the negative pole of described first diode is connected with the positive pole of described 4th diode, the second end of described telefault respectively with the second end of described first electric capacity, the collector of described switching tube, the negative pole of described second diode is connected with the positive pole of described 3rd diode, ground connection after the positive pole of described first diode is connected with the positive pole of described second diode, the negative pole of described 4th diode respectively with the negative pole of described 3rd diode, the first end of described second electric capacity is connected with the input end of described integrated voltage-stabilized pipe, the second end of described second electric capacity respectively with the earth terminal of described integrated voltage-stabilized pipe, ground connection after the first end of described first resistance is connected with the first end of described 3rd electric capacity, the output terminal of described integrated voltage-stabilized pipe respectively with the second end of described 3rd electric capacity, the first end of described 4th electric capacity is connected with the power end of described singlechip chip, second end of described first resistance is connected with described second end of the 4th electric capacity and the reset terminal of described singlechip chip respectively, the serial output terminal of described singlechip chip is connected with the first end of described second resistance, second end of described second resistance is connected with the base stage of described switching tube, the output terminal of the oscillator inverting amplifier of described singlechip chip is connected with the first end of described 5th electric capacity and the first end of described 7th electric capacity respectively, the oscillator inverting amplifier of described singlechip chip and the input end of internal clock generator are connected with the first end of described 6th electric capacity and the second end of described 7th electric capacity respectively, second end of described 5th electric capacity is connected with the second end of described 6th electric capacity and the first end of described 3rd resistance respectively, second end of described 3rd resistance is connected rear ground connection respectively with the earth terminal of described singlechip chip and the emitter of described switching tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310563036.6A CN104636691A (en) | 2013-11-13 | 2013-11-13 | Transponder for RFID (radio frequency identification) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310563036.6A CN104636691A (en) | 2013-11-13 | 2013-11-13 | Transponder for RFID (radio frequency identification) system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104636691A true CN104636691A (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310563036.6A Pending CN104636691A (en) | 2013-11-13 | 2013-11-13 | Transponder for RFID (radio frequency identification) system |
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| Country | Link |
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| CN (1) | CN104636691A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3572968A1 (en) * | 2018-05-22 | 2019-11-27 | Nxp B.V. | Clock gating unit for a transponder |
| WO2021217726A1 (en) * | 2020-04-29 | 2021-11-04 | 江苏大喜科技发展有限公司 | Storage circuit for improving working efficiency of rfid reader-writer |
-
2013
- 2013-11-13 CN CN201310563036.6A patent/CN104636691A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3572968A1 (en) * | 2018-05-22 | 2019-11-27 | Nxp B.V. | Clock gating unit for a transponder |
| US11068040B2 (en) | 2018-05-22 | 2021-07-20 | Nxp B.V. | Clock gating unit for a transponder |
| WO2021217726A1 (en) * | 2020-04-29 | 2021-11-04 | 江苏大喜科技发展有限公司 | Storage circuit for improving working efficiency of rfid reader-writer |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |