CN201903893U - Ultra-high frequency RFID reading and writing device - Google Patents
Ultra-high frequency RFID reading and writing device Download PDFInfo
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- CN201903893U CN201903893U CN2010206850967U CN201020685096U CN201903893U CN 201903893 U CN201903893 U CN 201903893U CN 2010206850967 U CN2010206850967 U CN 2010206850967U CN 201020685096 U CN201020685096 U CN 201020685096U CN 201903893 U CN201903893 U CN 201903893U
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- 230000003534 oscillatory effect Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
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- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Abstract
The utility model relates to an ultra-high frequency RFID (Radio Frequency Identification) reading and writing device, which comprises a radio frequency unit, a control unit, a baseband processing unit, a regulated power supply unit and an antenna unit, wherein the radio frequency unit, the antenna unit and the baseband processing unit are connected with a controlled unit for controlling and providing carrier signals for the reading and writing device, the antenna unit is used for transmitting the carrier signals after processing to an electronic tag and delivering the signals returned from the electronic tag to the radio frequency antenna by the antenna unit, the signals after the processing by the radio frequency unit are converted to baseband signals, and the baseband processing unit is connected with the radio frequency unit and the control unit respectively for processing the baseband signals and then getting effective signals which can be controlled by the control unit; and the regulated power supply unit is connected with the radio frequency unit, the control unit and the baseband processing unit respectively for providing voltage required for working for all the units and sub-units in the units. The ultra-high frequency RFID reading and writing device has the benefit that compared with other similar reading and writing devices, the ultra-high frequency RFID one provided by the utility model has smaller volume owing to adopting the modular structure.
Description
Technical field
The utility model belongs to radio-frequency (RF) identification (RFID) technology, is specifically related to the radio-frequency identification reader/writer technical field.
Background technology
REID is a kind of contactless recognition technology, and its ultimate principle is to utilize its radiofrequency signal, space coupling and transport property, realizes the automatic identification to mobile and stationary object.Radio-frequency recognition system generally partly is made up of read write line, electronic tag, antenna and exterior terminal etc.The effect of radio-frequency identification reader/writer device is by sky alignment electronic tag launched microwave energy, the active electron label, send order to electronic tag by exterior terminal simultaneously, electronic tag is obtained microwave energy back reflection signal, read write line receives the signal that electronic tag reflects by antenna, the echoed signal that tag reflection is returned is carried out filtering, demodulation, amplification, decoding and decoding processing, realization is read the data of the fixed data of label stored and data field, also can write, lock and kill the operation of data to the data in the data field.In radio-frequency recognition system, the working frequency range of ultrahigh frequency reader-writer is 840MHz～960MHz, can carry out the read-write of certain distance to the content in the electronic tag that satisfies ISO/IEC 18000-6C agreement, and send the information of the electronic tag read and write to radio frequency identification (RFID) terminal.The spatial placement of existing read-and-write device is to be core with an integrated chip, add some circuit units compositions that are centered around the various required functions of realization of integrated chip periphery, because numerous circuit units is not integrated into chip internal, causes existing read-and-write device volume excessive.
The utility model content
The purpose of this utility model is in order to overcome the low excessive deficiency of read-and-write device volume that causes of existing read-and-write device integrated chip and peripheral circuit unit integrated level thereof, the utility model proposes a kind of ultrahigh frequency radio frequency identification (RFID) reader device, this read-and-write device is by being integrated in control module and baseband processing unit the radio frequency chip subelement inside in the radio frequency unit, thereby well realized the miniaturization of read-and-write device.
The technical solution of the utility model: a kind of ultrahigh frequency radio frequency identification (RFID) reader device comprises radio frequency unit, control module, baseband processing unit, power supply unit of voltage regulation and antenna element; It is characterized in that, radio frequency unit provides carrier signal with antenna element is connected controlled unit with baseband processing unit the read write line that is controlled to be, antenna element is used for and will is emitted to electronic tag and will sends radio frequency unit to by antenna element from the signal that electronic tag returns through the carrier signal after handling, the conversion of signals of handling through radio frequency unit is a baseband signal, and baseband processing unit is connected with control module in order to baseband signal is handled the useful signal that controlled unit, back can be controlled with radio frequency unit respectively; Power supply unit of voltage regulation is connected with radio frequency unit, control module and baseband processing unit respectively with thinking that the subelement in each unit and the unit provides work required voltage.
Above-mentioned radio frequency unit comprises radiating circuit subelement, receiving circuit subelement, oscillatory circuit subelement and radio frequency chip subelement.
Above-mentioned control module and baseband processing unit are integrated in the radio frequency chip subelement of radio frequency unit.
The beneficial effects of the utility model are: similar read-and-write device with other is compared, adopt modular organization, volume is very little, working frequency range is 840MHz～960MHz, can read and write the electronic tag that meets ISO/IEC 18000-6C agreement, control module and baseband processing unit are integrated in the radio frequency chip subelement of radio frequency unit, exactly because control module and baseband processing unit are integrated in the radio frequency chip subelement of radio frequency unit, so read-and-write device can be done very for a short time, even can be mounted in the mobile phone, realize the function of mobile-phone payment, so the field of using is very extensive.
Description of drawings
Fig. 1 is a structure principle chart of the present utility model.
Fig. 2 is the structure principle chart that control module of the present utility model and baseband processing unit are integrated in the radio frequency chip subelement.
Fig. 3 is the voltage-stabilized power supply circuit of the utility model embodiment.
Fig. 4 is the radio frequency chip subelement circuit in the radio frequency unit of the utility model embodiment.
Fig. 5 is the oscillatory circuit subelement circuit in the radio frequency unit of the utility model embodiment.
Fig. 6 is the balanced-unbalanced signaling conversion circuit of the radiating circuit subelement of the utility model embodiment.
Fig. 7 is the radiating circuit subelement circuit of the utility model embodiment.
Fig. 8 is the receiving circuit subelement circuit of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and concrete example the utility model is described further:
As shown in Figure 1, a kind of ultrahigh frequency radio frequency identification (RFID) reader device comprises radio frequency unit, control module, baseband processing unit, power supply unit of voltage regulation and antenna element; It is characterized in that, radio frequency unit provides carrier signal with antenna element is connected controlled unit with baseband processing unit the read write line that is controlled to be, antenna element is used for and will is emitted to electronic tag and will sends radio frequency unit to by antenna element from the signal that electronic tag returns through the carrier signal after handling, the conversion of signals of handling through radio frequency unit is a baseband signal, and baseband processing unit is connected with control module in order to baseband signal is handled the useful signal that controlled unit, back can be controlled with radio frequency unit respectively; Power supply unit of voltage regulation is connected with radio frequency unit, control module and baseband processing unit respectively with thinking that the subelement in each unit and the unit provides work required voltage.
As shown in Figure 2, above-mentioned radio frequency unit comprises radiating circuit subelement, receiving circuit subelement, oscillatory circuit subelement and radio frequency chip subelement.Above-mentioned control module and baseband processing unit are integrated in the radio frequency chip subelement of radio frequency unit.
Below by concrete accompanying drawing each unit is carried out specific description.
Radio frequency unit comprises: radiating circuit subelement, receiving circuit subelement, radio frequency chip subelement and oscillatory circuit subelement, and shown in Fig. 4 to 7.
The oscillatory circuit subelement of radio frequency unit: the temperature compensating crystal oscillator U3 among Fig. 5,1 pin that is KT3225 divides crimping 3.3V voltage through R6 and R8,4 pin connect 3.3V voltage through C11 and L61111 filtering, and every 48 pin that directly are input to U11, frequency is 19.2MHz to 3 pin through C8.
The radiating circuit subelement of radio frequency unit: as shown in Figure 4, the radio frequency chip subelement U11 of radio frequency unit, i.e. voltage controlled oscillator and phase-locked loop circuit in the PR9000, and the oscillatory circuit subelement of radio frequency unit constitutes the carrier wave combiner circuit.Signal after carrier wave is synthetic amplifies through U11 chip internal buffering, export to balanced-to-unblanced transformer U2 among Fig. 6 by the 13rd and 14 pin of U11 chip, be 4 pin and 6 pin of 0900BL18B200, middle through C6 and C7 every directly, the 3.3V voltage that inputs to U11 is through C4 and C5 filtering, and process L4 and L5 input to 13 and 14 pin of U11; The signal of the 2 pin output of process U2 is through the low-pass filter network filtering of C37, C38 among Fig. 7 and L8 composition, enter into power amplifier U4 then, be 4 pin of SKY77189,1 pin of U4 is to enable pin, and the 5 pin process C42 filtering of U4 connects the voltage of 3.6V, and 6 pin of U4 connect the voltage of 3.6V through C39, C40 and C41 filtering, 8, the 9 and 11 pin ground connection of U4,7 pin are signal output parts, and after amplifying through power amplifier, signal is from the 7 pin output of power amplifier; Through isolator U14, promptly 2 pin of CEG23911 are from 4 pin output signals of isolator, 1, the 3 pin ground connection of U14; Signal is through the low-pass filter network arrival direction coupling mechanism U5 of C35, C36 and L37 composition, it is 1 pin of CP0603A, arrive antenna connector S1 from 2 pin output signals process C33, the C34 of coupling mechanism and the low-pass filter network filtering of L9 composition, output signal is launched through antenna.
The receiving circuit subelement of radio frequency unit: as shown in Figure 8, the signal that antenna receives is by antenna connector S1, be input to arrival direction coupling mechanism U5 after the low-pass filter network filtering that C33, C34 and L9 form, be 2 pin of CP0603A, be input to 6 pin of radio frequency chip U11 after with signal attenuation 20dB from coupled end 3 pin, through a series of Base-Band Processing.The working frequency range of radio frequency unit is 840MHz～960MHz.
Power supply unit of voltage regulation: as shown in Figure 3, power supply unit of voltage regulation provides voltage for the subelement of each unit and each unit.Input 5V voltage inputs to voltage stabilizing chip U111, U211 and U611 through C111, C121 and C131 filtering among Fig. 3, R11111 is as test point, 5V voltage is input to U111, be 1,3 pin of MIC5205, as importing and enabling, C1111 is as input filter capacitor respectively, the 2 pin ground connection of U111,4 pin are through C311 ground connection, and 5 pin meet filter capacitor C2111 as output, and D111 and R1111 are as the output display lamp; 1 pin that resistance R 22222 is input to U211 is put in the 5V input after tested, also is input to 3 pin of U211 by the R171 dividing potential drop, as enable signal, C811 is as input filter capacitor, 4 pin are through C101 ground connection, and 5 pin meet filter capacitor C911 as output, and D311 and R511 are as the output display lamp; Resistance R 33333 is put in the 5V input after tested, be input to 1,2 pin of U611, respectively as importing and enabling, C181 and C191 are as input voltage filtering, the 2 pin ground connection of U611, R811, R911 will export from 4 pin of U611 after the input 5V transformation as divider resistance, C201 is as output filter capacitor, and D611 and R101 are as the output display lamp.The operating voltage of the radio frequency chip subelement in the radio frequency unit is 3.3V, and the operating voltage of the power amplifier of the radiating circuit subelement in the radio frequency unit is 3.6V, and the operating voltage of the oscillatory circuit subelement of radio frequency unit is 3.3V.
Those of ordinary skill in the art will appreciate that embodiment described here is in order to help reader understanding's principle of the present utility model, should to be understood that the protection domain of utility model is not limited to such special statement and embodiment.Everyly make various possible being equal to according to foregoing description and replace or change, all be considered to belong to the protection domain of claim of the present utility model.
Claims (3)
1. a ultrahigh frequency radio frequency identification (RFID) reader device comprises radio frequency unit, control module, baseband processing unit, power supply unit of voltage regulation and antenna element; It is characterized in that, radio frequency unit provides carrier signal with antenna element is connected controlled unit with baseband processing unit the read write line that is controlled to be, antenna element is used for and will is emitted to electronic tag and will sends radio frequency unit to by antenna element from the signal that electronic tag returns through the carrier signal after handling, the conversion of signals of handling through radio frequency unit is a baseband signal, and baseband processing unit is connected with control module in order to baseband signal is handled the useful signal that controlled unit, back can be controlled with radio frequency unit respectively; Power supply unit of voltage regulation is connected with radio frequency unit, control module and baseband processing unit respectively with thinking that the subelement in each unit and the unit provides work required voltage.
2. a kind of ultrahigh frequency radio frequency identification (RFID) reader device according to claim 1 is characterized in that above-mentioned radio frequency unit comprises radiating circuit subelement, receiving circuit subelement, oscillatory circuit subelement and radio frequency chip subelement.
3. a kind of ultrahigh frequency radio frequency identification (RFID) reader device according to claim 2 is characterized in that above-mentioned control module and baseband processing unit are integrated in the radio frequency chip subelement of radio frequency unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206850967U CN201903893U (en) | 2010-12-28 | 2010-12-28 | Ultra-high frequency RFID reading and writing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206850967U CN201903893U (en) | 2010-12-28 | 2010-12-28 | Ultra-high frequency RFID reading and writing device |
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| CN201903893U true CN201903893U (en) | 2011-07-20 |
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| CN2010206850967U Expired - Lifetime CN201903893U (en) | 2010-12-28 | 2010-12-28 | Ultra-high frequency RFID reading and writing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106886734A (en) * | 2015-12-15 | 2017-06-23 | 江苏稻源微电子有限公司 | A kind of ultrahigh frequency RFID electronic tag quick counting, the method for read-write |
| CN109815759A (en) * | 2019-01-24 | 2019-05-28 | 电子科技大学 | A kind of telecommunication group network system and network-building method based on ultrahigh frequency RFID |
-
2010
- 2010-12-28 CN CN2010206850967U patent/CN201903893U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106886734A (en) * | 2015-12-15 | 2017-06-23 | 江苏稻源微电子有限公司 | A kind of ultrahigh frequency RFID electronic tag quick counting, the method for read-write |
| CN109815759A (en) * | 2019-01-24 | 2019-05-28 | 电子科技大学 | A kind of telecommunication group network system and network-building method based on ultrahigh frequency RFID |
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Effective date of registration: 20130701 Address after: 611731 Chengdu province high tech West West source Avenue, No. 2006 Patentee after: University of Electronic Science and technology of Sichuan foundation for education development Address before: 611731 Chengdu province high tech Zone (West) West source Avenue, No. 2006 Patentee before: University of Electronic Science and Technology of China |
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