CN102324057B - Novel radio-frequency electronic tag circuit - Google Patents
Novel radio-frequency electronic tag circuit Download PDFInfo
- Publication number
- CN102324057B CN102324057B CN201110267411.3A CN201110267411A CN102324057B CN 102324057 B CN102324057 B CN 102324057B CN 201110267411 A CN201110267411 A CN 201110267411A CN 102324057 B CN102324057 B CN 102324057B
- Authority
- CN
- China
- Prior art keywords
- circuit
- electric capacity
- inductance
- detector diode
- electronic tag
- 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.)
- Active
Links
- 230000001105 regulatory effect Effects 0.000 claims abstract description 17
- 230000003534 oscillatory effect Effects 0.000 claims description 20
- 230000001939 inductive effect Effects 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 abstract description 36
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Abstract
The invention discloses a novel radio-frequency electronic tag circuit, comprising an LC (Inductor Capacitor) oscillating circuit, a balancing circuit, a matching regulating circuit, a demodulating circuit, and a control unit, wherein the LC (Inductor Capacitor) oscillating circuit, the balancing circuit, the matching regulating circuit and the demodulating circuit are connected in sequence, a signal output end of the demodulating circuit is connected with a signal input end of the control unit, and a control signal output end of the control unit is connected with a matching/mistuning control signal input end of the matching regulating circuit. The control unit is used for controlling matching or mistuning of the matching regulating circuit so as to enable a high-frequency current generated due to reception of a high-frequency signals in the LC oscillating circuit to change, so that the high-frequency signals reflected out from the LC oscillating circuit change, and a reader matched with the novel radio-frequency electronic tag circuit in the invention is used for reading and analyzing the reflected signals of the electronic tag circuit, so that information, such as ID (Identification) number and the like, of the novel radio-frequency electronic tag circuit in the invention can be obtained. Accordingly, the novel radio-frequency electronic tag circuit in the technical scheme provided by the invention has a simple structure and a very practical popularization value, is convenient to operate, and consumes no energy sources during actual application.
Description
technical field:
The present invention relates to microwave radio circuit engineering field, relate in particular to a kind of Novel radio-frequency electronic tag circuit.
background technology:
When radio-frequency communication field and some Internet of things system that need to carry out mark need to be identified concrete device, device etc., method is, on the device that need to identify at each, device, electronic tag is set eaily, in the time of need to identifying, by reader, read, therefore, electronic tag circuit in current radio-frequency communication field and some Internet of things system that need to carry out mark be very necessary.
summary of the invention:
The object of this invention is to provide a kind of Novel radio-frequency electronic tag circuit.
A kind of Novel radio-frequency electronic tag circuit, wherein: comprise the LC oscillatory circuit, balancing circuitry, match and regulate circuit, the demodulator circuit that connect in turn, also comprise control module, the signal input part of the signal output part connection control unit of demodulator circuit, coupling/off resonance control signal input end of the control signal output terminal matching connection regulating circuit of control module; Described Novel radio-frequency electronic tag circuit, wherein: described LC oscillatory circuit comprises inductance unit and the 4th electric capacity, the two ends of inductance unit respectively with the corresponding connection in two ends of the 4th electric capacity, inductance unit and the two ends of the corresponding connection of the 4th electric capacity connect respectively two signal input parts of balancing circuitry; Described Novel radio-frequency electronic tag circuit, wherein: described inductance unit comprises first, second, third, fourth inductance, first, second inductance is in series and forms the first inductive bank, three, the 4th inductance is in series and forms the second inductive bank, the equal ground connection in one end of first, second inductive bank, the other end of first, second inductive bank connects respectively the two ends of the 4th electric capacity; Described Novel radio-frequency electronic tag circuit, wherein: described balancing circuitry comprises the 5th inductance, the 6th inductance, the 5th electric capacity, the 6th electric capacity, the first end of the 5th inductance, the 6th inductance connects respectively two output terminals of LC oscillatory circuit, the second end of the 5th inductance, the 6th inductance connects respectively the first end of the 6th electric capacity, the 5th electric capacity, and the second end of the 5th electric capacity, the 6th electric capacity connects respectively the first end of the 5th inductance, the 6th inductance; The intermediate contact of the 5th inductance and the 6th electric capacity is for the signal input part of matching connection regulating circuit, and the intermediate contact of the 6th inductance and the 5th electric capacity is for ground connection; Described Novel radio-frequency electronic tag circuit, wherein: described match and regulate circuit comprises the 9th variable capacitance, the second electric capacity, the 3rd electric capacity, the 7th inductance, the two ends of the 7th inductance connect respectively the first end of the second electric capacity, the 3rd electric capacity, the second end ground connection of the second electric capacity, the 3rd electric capacity, the intermediate contact of the second electric capacity and the 7th inductance is for being connected the signal output part of balancing circuitry, and the 7th inductance and the intermediate contact of the 3rd electric capacity are used for being connected the signal input part of demodulator circuit; First, second end of the 9th variable capacitance connects respectively first, second end of the second electric capacity, and the first end of the 9th variable capacitance is the control signal output terminal of connection control unit also; Described Novel radio-frequency electronic tag circuit, wherein: described match and regulate circuit also comprises that first shelves electric capacity, the first end of the 9th variable capacitance, the second electric capacity shelves by first the signal output part that electric capacity is connected balancing circuitry with the intermediate contact of the 7th inductance first end; Described Novel radio-frequency electronic tag circuit, wherein: demodulator circuit comprises the first detector diode, the second detector diode, the first resistance, the 8th electric capacity, the signal output part of the anodal matching connection regulating circuit of the first detector diode, the negative pole of the first detector diode is for the signal input part of connection control unit, the plus earth of the second detector diode, negative pole connect the positive pole of the first detector diode, and first, second detector diode forms voltage doubling rectifing circuit; The first resistance, the 8th electric capacity as load are connected in parallel on respectively between the negative pole and ground of the first detector diode; Described Novel radio-frequency electronic tag circuit, wherein: demodulator circuit also comprises the tenth capacitance, the tenth capacitance is serially connected between the output terminal of match and regulate circuit and the positive pole of the first detector diode; Described Novel radio-frequency electronic tag circuit, wherein: demodulator circuit also comprises the 7th electric capacity of voltage regulation, the 7th electric capacity of voltage regulation one end connects the negative pole of the first detector diode, the power input of the 7th electric capacity of voltage regulation other end connection control unit.
Described Novel radio-frequency electronic tag circuit, wherein: described control module comprises microprocessor, the signal input part of microprocessor connects demodulator circuit signal output part, coupling/off resonance control signal input end of the control signal output terminal matching connection regulating circuit of microprocessor.
The present invention will reach following technique effect after adopting technique scheme:
Novel radio-frequency electronic tag circuit of the present invention, by control module, control match and regulate Circuit Matching or off resonance changes the high-frequency current producing due to received high-frequency signal in LC oscillatory circuit, thereby the high-frequency signal that LC oscillatory circuit is reflected away changes, the reader being used in conjunction with Novel radio-frequency electronic tag circuit of the present invention is resolved after reading the reflected signal of tag circuit of the present invention, can obtain the information such as id number of Novel radio-frequency electronic tag circuit of the present invention.As above visible, technical solution of the present invention is simple in structure, easy to operate, does not need to consume the energy when practical application, has very much practical reference value.
accompanying drawing explanation:
Fig. 1 is the structured flowchart of Novel radio-frequency electronic tag circuit of the present invention;
Fig. 2 is the circuit theory diagrams of Novel radio-frequency electronic tag circuit of the present invention.
embodiment:
A kind of Novel radio-frequency electronic tag circuit of the present invention, as Fig. 1, wherein: comprise the LC oscillatory circuit, balancing circuitry, match and regulate circuit, the demodulator circuit that connect in turn, also comprise control module, the signal input part of the signal output part connection control unit of demodulator circuit, coupling/off resonance control signal input end of the control signal output terminal matching connection regulating circuit of control module.
As Fig. 2, described LC oscillatory circuit comprises inductance unit and the 4th capacitor C 4, described inductance unit comprises first, second, third, fourth inductance L 1, L2, L3, L4, first, second inductance L 1, L2 are in series and form the first inductive bank, three, the 4th inductance L 3, L4 are in series and form the second inductive bank, the equal ground connection in one end of first, second inductive bank, the other end of first, second inductive bank connects respectively the two ends of the 4th capacitor C 4; Inductance unit and the two ends of the corresponding connection of the 4th electric capacity connect respectively two signal input parts of balancing circuitry.
Described balancing circuitry adopts Ba Lun balancing circuitry, comprise the 5th inductance L 5, the 6th inductance L 6, the 5th capacitor C 5, the 6th capacitor C 6, the first end of the 5th inductance L 5, the 6th inductance L 6 connect respectively in LC oscillatory circuit for the inductance unit of signal output and the 4th electric capacity the two ends of corresponding connection, the second end of the 5th inductance L 5, the 6th inductance L 6 connects respectively the first end of the 6th capacitor C 6, the 5th capacitor C 5, and the second end of the 5th capacitor C 5, the 6th capacitor C 6 connects respectively the first end of the 5th inductance L 5, the 6th inductance L 6; The intermediate contact of the 5th inductance L 5 and the 6th capacitor C 6 is for the signal input part of matching connection regulating circuit, and the intermediate contact of the 6th inductance L 6 and the 5th capacitor C 5 is for ground connection.
Described match and regulate circuit comprises the 9th variable capacitance C9, the second capacitor C 2, the 3rd capacitor C 3, the 7th inductance L 7 and first is shelved capacitor C 1, the two ends of the 7th inductance L 7 connect respectively the second capacitor C 2, the first end of the 3rd capacitor C 3, the second capacitor C 2, the second end ground connection of the 3rd capacitor C 3, the intermediate contact of the second capacitor C 2 and the 7th inductance L 7 is shelved capacitor C 1 by first and is connected and in balancing circuitry, is used as the 5th inductance L 5 of signal output part and the intermediate contact of the 6th capacitor C 6, the intermediate contact of the 7th inductance L 7 and the 3rd capacitor C 3 is for being connected the signal input part of demodulator circuit, first, second end of the 9th variable capacitance C9 connects respectively first, second end of the second capacitor C 2, and the first end of the 9th variable capacitance C9 is the control signal output terminal of connection control unit also.
Described demodulator circuit comprises the first detector diode P1, the second detector diode P2, the first resistance R 1, the 8th capacitor C 8, the tenth capacitance C10, the positive pole of the first detector diode P1 passes through in the tenth capacitance C10 matching connection regulating circuit for the 7th inductance L 7 of output signal and the intermediate contact of the second capacitor C 2, the negative pole of the first detector diode P1 is for the signal input part of connection control unit, the plus earth of the second detector diode P2, negative pole connects the positive pole of the first detector diode P1, first, the second detector diode P1, P2 forms voltage doubling rectifing circuit, the first resistance R 1, the 8th capacitor C 8 as load are connected in parallel on respectively between the negative pole and ground of the first detector diode P1.
Described control module adopts microprocessor U1, the signal input part X1 pin of microprocessor U1 connects the negative pole of the first detector diode P1 in demodulator circuit, the first end of the 9th variable capacitance C9 in the control signal output terminal X2 pin matching connection regulating circuit of microprocessor U1.
Described demodulator circuit also comprises the 7th electric capacity of voltage regulation C7, and the 7th electric capacity of voltage regulation C7 one end connects the negative pole of the first detector diode P1, and the 7th electric capacity of voltage regulation C7 other end connects the power input VCC pin of microprocessor U1.
Described LC oscillatory circuit forms the dual-mode antenna module of Novel radio-frequency electronic tag circuit of the present invention, namely shunt-resonant circuit; Aforementioned LC oscillatory circuit receives after the radiofrequency signal (being electromagnetic wave) that the reader that matches with Novel radio-frequency electronic tag circuit of the present invention sends, the Ba Lun balancing circuitry (also referred to as Balanced or unbalanced transducer) forming via inductance L 5, L6, capacitor C 5, C6 is converted to electromagnetic wave output unbalanced, that can transmit with coaxial cable by the radiofrequency signal receiving, then, through capacitor C 1 for every removing direct current, send into by variable capacitance C9 and capacitor C 2, C3, inductance L 7, formed '
' type match and regulate circuit carries out Circuit Matching.Here, capacitor C 9 also can adopt off resonance electric capacity; Through the signal of match and regulate circuit output again through capacitance C10 after straight, sending into detecting circuit processes, signal after detecting circuit is processed is sent into the signal input part X1 pin of microprocessor U1 in control module again, after microprocessor U1 processes, by the control signal output terminal X2 pin output square-wave signal of microprocessor U1, described square-wave signal provides the voltage signal of two kinds of level of height, is used for controlling the size of the electric capacity of variable capacitance C9, thereby control '
' type match and regulate circuit in coupling and off resonance two states, due to
' type match and regulate circuit is in the conversion of coupling or the two states of off resonance, make the radiofrequency signal of Input matching regulating circuit reflection not occur and reflect to LC oscillatory circuit, thereby cause the variation of inductance L 1 in LC oscillatory circuit, L2, L3, L4 medium-high frequency electric current, produce back scattering mechanism.Described back scattering mechanism refers to: by loaded impedance, changed and made resonant circuit produce the electromagnetic phenomenon of reflection, be called back scattering.In detecting circuit, detector diode P1 and detector diode P2 form voltage doubling rectifing circuit, and resistance R 1 and capacitor C 8 are as the load of voltage doubling rectifing circuit, and the command signal after voltage doubling rectifing circuit is processed sends microprocessor U1 to; Meanwhile, the signal after voltage doubling rectifing circuit is processed is the VCC pin power supply of microprocessor U1 after capacitor C 7 voltage stabilizings, makes tag circuit of the present invention not need external power supply.
To sum up, the LC oscillatory circuit in tag circuit of the present invention has and receives the radiofrequency signal of reader and reflected radio signal to the function of reader.LC oscillatory circuit receives the modulated RF signals that reader is sent, through Ba Lun balancing circuitry and matching network, detecting circuit, process, change modulated emitting radio frequency signal into direct supply and dependent instruction information, offer respectively power supply input pin VCC and the signal input tube pin X1 of microprocessor U1, microprocessor U1 exports relevant square wave voltage signal by its control signal output pin X2 after processing, square wave voltage signal can be regarded as variable voltage, for controlling the electric capacity size of variable capacitance C9; The change of variable capacitance C9 electric capacity size, cause LC oscillatory circuit in resonance or off resonance two states, the radiofrequency signal that LC oscillatory circuit is received does not reflect and is all transferred to tag circuit and part reflection, reader receives the size of LC oscillatory circuit reflected signal again, therefrom demodulates the information such as unique ID number that represent this tag circuit.
Wherein: after microprocessor U1 processes the signal of pin X1 input, " 0 " and " 1 " two states by a kind of available binary digit baseband signal of pin X2 output removes to modulate the square-wave signal of tunable capacitor C9 electric capacity size, thereby change the load impedance value of match and regulate circuit, and then change the size of the equivalent load that tag circuit of the present invention presents, reach coupling and the mismatch two states of tag circuit equivalent load of the present invention, when tunable capacitor C9 is adjusted to the first capacitance by control, tag circuit of the present invention presents equivalent matched load with respect to reader, the signal of at this moment reader transmitting is all absorbed by tag circuit of the present invention substantially, cause reader can only receive the signal of tag circuit of the present invention reflection very little, and when microprocessor U1 adjusts to the second capacitance by tunable capacitor C9 control, tag circuit of the present invention presents equivalent mismatch load with respect to reader, at this moment the signal that reader sending and receiving are penetrated only has a part seldom by tag circuit of the present invention, to be absorbed to maintain the work of microprocessor U1, most of signal is all reflected back toward reader, so reader will receive larger tag reflection signal, reader will be made the relevant informations such as id number of identifying or reading tag circuit of the present invention according to agreement regulation and internal processes.
Claims (2)
1. a Novel radio-frequency electronic tag circuit, it is characterized in that: comprise the LC oscillatory circuit, balancing circuitry, match and regulate circuit, the demodulator circuit that connect in turn, also comprise control module, the signal input part of the signal output part connection control unit of demodulator circuit, coupling/off resonance control signal input end of the control signal output terminal matching connection regulating circuit of control module; Described LC oscillatory circuit comprises inductance unit and the 4th electric capacity, the two ends of inductance unit respectively with the corresponding connection in two ends of the 4th electric capacity, inductance unit and the two ends of the corresponding connection of the 4th electric capacity connect respectively two signal input parts of balancing circuitry; Described inductance unit comprises first, second, third, fourth inductance, first, second inductance is in series and forms the first inductive bank, three, the 4th inductance is in series and forms the second inductive bank, the equal ground connection in one end of first, second inductive bank, the other end of first, second inductive bank connects respectively the two ends of the 4th electric capacity; Described balancing circuitry comprises the 5th inductance, the 6th inductance, the 5th electric capacity, the 6th electric capacity, the first end of the 5th inductance, the 6th inductance connects respectively two output terminals of LC oscillatory circuit, the second end of the 5th inductance, the 6th inductance connects respectively the first end of the 6th electric capacity, the 5th electric capacity, and the second end of the 5th electric capacity, the 6th electric capacity connects respectively the first end of the 5th inductance, the 6th inductance; The intermediate contact of the 5th inductance and the 6th electric capacity is for the signal input part of matching connection regulating circuit, and the intermediate contact of the 6th inductance and the 5th electric capacity is for ground connection; Described match and regulate circuit comprises the 9th variable capacitance, the second electric capacity, the 3rd electric capacity, the 7th inductance, the two ends of the 7th inductance connect respectively the first end of the second electric capacity, the 3rd electric capacity, the second end ground connection of the second electric capacity, the 3rd electric capacity, the intermediate contact of the second electric capacity and the 7th inductance is for being connected the signal output part of balancing circuitry, and the 7th inductance and the intermediate contact of the 3rd electric capacity are used for being connected the signal input part of demodulator circuit; First, second end of the 9th variable capacitance connects respectively first, second end of the second electric capacity, and the first end of the 9th variable capacitance is the control signal output terminal of connection control unit also; Described match and regulate circuit also comprises that first shelves electric capacity, and the first end of the 9th variable capacitance, the second electric capacity shelves by first the signal output part that electric capacity is connected balancing circuitry with the intermediate contact of the 7th inductance first end; Described demodulator circuit comprises the first detector diode, the second detector diode, the first resistance, the 8th electric capacity, the signal output part of the anodal matching connection regulating circuit of the first detector diode, the negative pole of the first detector diode is for the signal input part of connection control unit, the plus earth of the second detector diode, negative pole connect the positive pole of the first detector diode, and first, second detector diode forms voltage doubling rectifing circuit; The first resistance, the 8th electric capacity as load are connected in parallel on respectively between the negative pole and ground of the first detector diode; Demodulator circuit also comprises the tenth capacitance, and the tenth capacitance is serially connected between the output terminal of match and regulate circuit and the positive pole of the first detector diode; Demodulator circuit also comprises the 7th electric capacity of voltage regulation, and the 7th electric capacity of voltage regulation one end connects the negative pole of the first detector diode, the power input of the 7th electric capacity of voltage regulation other end connection control unit.
2. Novel radio-frequency electronic tag circuit as claimed in claim 2, it is characterized in that: described control module comprises microprocessor, the signal input part of microprocessor connects demodulator circuit signal output part, coupling/off resonance control signal input end of the control signal output terminal matching connection regulating circuit of microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110267411.3A CN102324057B (en) | 2011-09-09 | 2011-09-09 | Novel radio-frequency electronic tag circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110267411.3A CN102324057B (en) | 2011-09-09 | 2011-09-09 | Novel radio-frequency electronic tag circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102324057A CN102324057A (en) | 2012-01-18 |
| CN102324057B true CN102324057B (en) | 2014-03-19 |
Family
ID=45451796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110267411.3A Active CN102324057B (en) | 2011-09-09 | 2011-09-09 | Novel radio-frequency electronic tag circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102324057B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326669B (en) * | 2012-03-21 | 2017-02-08 | 国民技术股份有限公司 | Electronic tag demodulation circuit, demodulation method and electronic tag |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038633A (en) * | 2006-01-13 | 2007-09-19 | 兄弟工业株式会社 | Tag label creating device |
| CN201465133U (en) * | 2009-07-16 | 2010-05-12 | 北京探感科技有限公司 | Radio-frequency electronic tag reader |
| CN102105891A (en) * | 2008-06-30 | 2011-06-22 | 荷兰应用自然科学研究组织Tno | A radio frequency tag |
| CN102169554A (en) * | 2011-03-30 | 2011-08-31 | 陈立强 | Multi-mode passive tag |
-
2011
- 2011-09-09 CN CN201110267411.3A patent/CN102324057B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038633A (en) * | 2006-01-13 | 2007-09-19 | 兄弟工业株式会社 | Tag label creating device |
| CN102105891A (en) * | 2008-06-30 | 2011-06-22 | 荷兰应用自然科学研究组织Tno | A radio frequency tag |
| CN201465133U (en) * | 2009-07-16 | 2010-05-12 | 北京探感科技有限公司 | Radio-frequency electronic tag reader |
| CN102169554A (en) * | 2011-03-30 | 2011-08-31 | 陈立强 | Multi-mode passive tag |
Non-Patent Citations (4)
| Title |
|---|
| UHF RFID标签芯片模拟射频前端电路设计;曾辉;《电子科技大学》;20101231;第12-13页 * |
| 巴伦在RFID系统中的应用研究;张有志等;《信息技术》;20101231(第7期);第9-12页 * |
| 张有志等.巴伦在RFID系统中的应用研究.《信息技术》.2010,(第7期),第9-12页. |
| 曾辉.UHF RFID标签芯片模拟射频前端电路设计.《电子科技大学》.2010, |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102324057A (en) | 2012-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2019205350A (en) | Non-contact power transmission device | |
| CN104823204B (en) | Communication equipment, communication means, integrated circuit and electronic instrument | |
| CN110768392B (en) | Inductively coupled power transmission and full duplex signal hybrid transmission circuit and method | |
| CN102956967B (en) | Circularly polarized RFID (Radio Frequency Identification Device) tag antenna | |
| CN101770561B (en) | Switching method and control switching system thereof of radio frequency identification device (RFID) multi-protocol reader-writer | |
| US20130017782A1 (en) | Near field communications apparatus | |
| CN104050499A (en) | High-frequency radio frequency identification label | |
| US9929704B2 (en) | Class E2 amplifier | |
| CN101576950A (en) | Terminal for radiofrequency transmission-reception by means of inductive coupling | |
| CN105160387A (en) | Magnetic coupling radio frequency identification tag circuit applying loop coil antenna | |
| CN102735957A (en) | Method and system for monitoring antenna oscillator of base station as well as integrated monitoring equipment | |
| CN102324057B (en) | Novel radio-frequency electronic tag circuit | |
| CN202167040U (en) | Radio-frequency card read-write apparatus | |
| CN104577328A (en) | RFID antenna and automatic matching method thereof | |
| WO2017166364A1 (en) | Nfc reader-writer interface for optimizing energy acquisition and small-size antenna | |
| CN103606003B (en) | The automatic off resonance mu balanced circuit of radio frequency identification label chip | |
| CN204270313U (en) | The circuit of Real-Time Monitoring non-contact IC card under low-power consumption mode | |
| EP4016390B1 (en) | Dual system rfid tag | |
| CN201345104Y (en) | Control switching system for RFID multi-protocols reader | |
| CN104376289A (en) | Low-power-consumption-mode real-time contactless IC (integrated circuit) card monitoring and identifying method | |
| CN204408333U (en) | RFID front end adaptive unit | |
| CN101482913A (en) | Radio frequency card door lock circuit | |
| CN204667412U (en) | Low frequency closely connects the electronic bin RFID reader of contactless output | |
| CN106444393A (en) | Intelligent household control apparatus based on wireless transmission | |
| CN102999670B (en) | The method for designing of 13.56MHz RFID card reader near field antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: QINGDAO ENN GAS FACILITIES DEVELOPMENT CO., LTD. Effective date: 20140822 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Zhongtang Inventor after: Zhang Jinyu Inventor after: Hua Tizhi Inventor after: Liu Gang Inventor after: Zhou Xiaoyong Inventor after: Yang Guofeng Inventor after: Song Shuang Inventor before: Guo Zhongtang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: GUO ZHONGTANG TO: GUO ZHONGTANG ZHANG JINYU HUA TIZHI LIU GANG ZHOU XIAOYONG YANG GUOFENG SONG SHUANG |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140822 Address after: Hi tech building, 242 No. 450053 Henan East Road Nanyang city of Zhengzhou Province Patentee after: Henan Dong Lu Gao Ke Industrial Co., Ltd. Patentee after: Qingdao Enn Gas Facilities Development Co., Ltd. Address before: Hi tech building, 242 No. 450053 Henan East Road Nanyang city of Zhengzhou Province Patentee before: Henan Dong Lu Gao Ke Industrial Co., Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 450053 Zhengzhou province Jinshui District, Henan Agricultural Road No. 1, building 20, floor 2004, No. 16 Patentee after: Henan East high tech Industrial Limited by Share Ltd Patentee after: Qingdao Enn Gas Facilities Development Co., Ltd. Address before: Hi tech building, 242 No. 450053 Henan East Road Nanyang city of Zhengzhou Province Patentee before: Henan Dong Lu Gao Ke Industrial Co., Ltd. Patentee before: Qingdao Enn Gas Facilities Development Co., Ltd. |
|
| CP03 | Change of name, title or address |