CN101299232A - Transmitting circuit for super high frequency radio frequency recognition read-write machine to reduce power consumption - Google Patents
Transmitting circuit for super high frequency radio frequency recognition read-write machine to reduce power consumption Download PDFInfo
- Publication number
- CN101299232A CN101299232A CNA2008101150886A CN200810115088A CN101299232A CN 101299232 A CN101299232 A CN 101299232A CN A2008101150886 A CNA2008101150886 A CN A2008101150886A CN 200810115088 A CN200810115088 A CN 200810115088A CN 101299232 A CN101299232 A CN 101299232A
- Authority
- CN
- China
- Prior art keywords
- frequency
- power amplifier
- radio
- tag
- chip microcomputer
- 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.)
- Granted
Links
Images
Abstract
An emitting circuit of the hyper-high-frequency radio frequency recognizing read-write machine pertains to the hyper-high-frequency radio frequency recognizing read-write machine technique field, which is characterized by containing a baseband control module, an up-conversion module and a power amplification module. The power amplification module is under the control of the baseband control module at a non-linearity operating status, emits a single frequency banner carrier signal to the radio frequency label, and provides energy required by the work to the radio frequency label; after the single-chip receives the radio frequency answer, the power amplification module is at the linearity operating status, and the single-chip transmits instructions to the radio frequency label by the up converter and the power amplifier. The power consumption of the invention is lower than the power consumption of the general emitting circuit using single linear power amplifier.
Description
Technical field
The present invention relates to the implementation of super high frequency radio frequency recognition read-write machine emission path in a kind of REID of the communications field, particularly about reducing a kind of design proposal of super high frequency radio frequency recognition read-write machine power consumption.
Background technology
The RFID of the communications field (Radio Frequency Identification, radio-frequency (RF) identification) technology is to utilize RF-wise to carry out a kind of robotization article identification technology that telecommunication reaches identify objects.RFID has that the stored data amount is big, safe, penetration power is strong, decipherment distance is far away, recognition speed is fast, long service life, read-write, characteristics such as environmental suitability is strong, waterproof is antimagnetic.Simultaneously, because the great number cost and the high technology content of chip itself makes chip itself just have antiforge function, and, can also use the encryption technology of some suitable complexities, realization safety management.These advantages make that its application prospect is boundless, can be widely used in industry manufacturing, the management of commercial offers chain, public transport management, commodity counterfeit prevention, identification, animal identification, entrance guard management and various fields such as safety and military logistics.In recent years both at home and abroad to this technology especially wherein the REID of hyper band given very big concern, the radio-frequency technique of ultrahigh frequency is generally used passive label, required energy recovers to come out from electromagnetic wave when being label work, so just can reduce the cost of label greatly; In addition because super high frequency radio frequency recognition technology carrier frequency height can realize that higher traffic rate and farther transmission range are specially adapted to weigh such as the application of electronics supply chain management such as logistics management, retail trade.
As shown in Figure 2, a typical radio-frequency identification system should comprise label (radio-frequency card), read write line (radio frequency transceiver) and engine control system.Just as mentioned before, the RFID electronic tag of hyper band is passive label mostly, and their needed power supplys of working are to obtain by power up from the electromagnetic wave of read write line emission; Passive electronic label is realized transmitting data to read write line by back-scattering modulation technique.Its communication process as shown in Figure 1.
When label is put into the place of read write line, read write line sends instruction to tag operational by the autopolling mode, label is made response according to agreement regulation to instruction, such as returning the data of storing in the label, data being write the label internal storage, enter silent status or the like.
In order to make passive label can recover the required power supply of work within the specific limits, read write line must have certain emissive power, so read write line inside all uses power amplifier to improve output power; In order to prevent that read write line work from the time influencing the work of other communication facilities, the emission spectrum of read write line must satisfy the requirement of spectrum criterion, so the lower linear power amplifier of service efficiency all of the power amplifier in the read write line.Read write line power consumption under same emissive power is increased, be unfavorable for the realization of low-power consumption portable read-write machine.
Summary of the invention
At the problems referred to above, the present invention proposes a kind of design proposal of ultrahigh frequency low-power consumption radio-frequency identification reader/writer emission path, its objective is and reduce the read write line power consumption, as shown in Figure 2.It comprises: base band control module, up-conversion module and power amplifier module.The base band control module can be used single-chip microcomputer, digital signal processor, programmable logic array to wait and realize, up-conversion adopts frequency mixer or on-off circuit to realize.
One of feature of the present invention is, contains: baseband controller, and local oscillator generator, upconverter, nonlinear power amplifier and linear power amplifier also have antenna, wherein:
Baseband controller is a single-chip microcomputer, is provided with: the local frequency control output end, and the radio-frequency (RF) tag control signal output ends, and power amplifier is selected control signal output ends;
Local oscillator generator is a frequency synthesizer, is provided with banner carrier signal output terminal, and the local frequency control input end links to each other with described single-chip microcomputer local frequency control output end, receives the local frequency control signal;
Upconverter is a frequency mixer, is provided with: banner carrier control signal input end, link to each other with the banner carrier signal output terminal of described frequency synthesizer, and receive the banner carrier signal; Also be provided with the radio-frequency (RF) tag signal input end, link to each other with the corresponding output terminal of described single-chip microcomputer, the received RF label sends the control signal of instruction;
Nonlinear power amplifier is provided with: banner carrier signal input end, link to each other with the corresponding output terminal of described frequency converter, and after the reception banner carrier signal, provide needed work capacity by the described radio-frequency (RF) tag of sky alignment;
Linear power amplifier is provided with: radio-frequency (RF) tag command signal input end, link to each other with the corresponding output terminal of described frequency mixer, and received RF label instructions signal behind the received RF label instructions signal, sends instruction by the described radio-frequency (RF) tag of sky alignment;
Wherein, described single-chip microcomputer sends command signal according to following steps to radio-frequency (RF) tag:
Step (1), described single-chip microcomputer starts linear power amplifier, in time t1,, send instruction and provide work required energy for it to described radio-frequency (RF) tag through sending the command signal that power is P to radio-frequency (RF) tag behind described frequency mixer, linear power amplifier, the antenna;
Step (2), described single-chip microcomputer cuts out linear power amplifier, starts nonlinear power amplifier, and after passing through described frequency mixer, non-linear amplifier successively, send power by described antenna and also be the banner carrier signal of P, for described radio-frequency (RF) tag provides work required energy;
Step (3), described single-chip microcomputer is received replying of described radio-frequency (RF) tag through behind the tag responses stand-by period t2;
Step (4), described single-chip microcomputer is calculated as follows the power consumption P2 of described radiating circuit:
P2＝(P*t1/y1+P*t2/y2)/(t1+t2)，
Wherein y1 is the efficient of linear power amplifier, and y2 is the efficient of nonlinear power amplifier, y2＞y1, t2＞t1.
Two of feature of the present invention is that described linear power amplifier and nonlinear power amplifier are merged into a duty controlled power amplifier, can be operated in linear amplification state and non-linear magnifying state.
Evidence: power consumption of the present invention is lower than the power consumption of the radiating circuit of a linear power amplifier of general employing.
Description of drawings
Fig. 1 is the communication process of passive label and radio-frequency identification reader/writer.
Fig. 2 is the pie graph of radio-frequency recognition system.
Fig. 3 is general ultrahigh frequency reader-writer radiating circuit block diagram.
The ultrahigh frequency reader-writer radiating circuit block diagram embodiment that Fig. 4 proposes for the present invention.
Embodiment
As previously mentioned, the ultra-high-frequency passive radio-frequency identification reader/writer at first sends instruction to label when work, wait for label echo reply signal then, and this moment, read write line must be launched the banner carrier wave so that label work energy needed to be provided.Guarantee that by the base band control module power amplifier module in the read write line emission path is linear when key of the present invention is read write line transmission instruction, power amplifier module was nonlinear when read write line sent the banner carrier wave.The efficiency power amplifier of supposing linear working state is y1, and the efficient of nonlinear power amplifier is y2, and the transmission instruction time is t1, send the banner carrier wave and wait for that the time of tag responses is t2, the output power that needs is P, can know y1＜y2, t1＜t2 in general operation.If adopt general read write line emission path scheme, can calculate to such an extent that the power consumption of read write line power amplifier module is P1=P/y1, adopt the read write line emission path scheme among the present invention, the power consumption that can obtain the read write line power amplifier module is P2=(P*t1/y1+P*t2/y2)/(t1+t2), and P1＞P2 is obviously arranged.
Embodiments of the invention are seen Fig. 4.
Compare with general read write line emission path scheme, the difference of this invention is that the power amplifier module employing can work in difference The power amplifying device of duty or use a plurality of dissimilar power amplifying devices. Need to send out to RF tag at read write line When sending instruction, base band control module control signal is passed through the linear power amplifier of power amplifier module or is made the power amplifier module worker Work can satisfy the requirement of spectrum criterion to transmitting like this at linear working state; Launch the banner carrier wave to penetrating at read write line When the frequency marking label provided the required energy of work to wait for the RF tag return data, base band control module control radiofrequency signal was through overpower The nonlinear power amplifier of amplification module or make power amplifier module be operated in non-linear working state is owing to pass through power this moment The signal of amplification module is simple signal, and it is higher to work in the efficiency power amplifier of nonlinear state, can either satisfy like this The requirement of spectrum criterion is again so that read write line overall power in the constant situation of power output is littler. According to present super high frequency radio frequency The requirement of identification protocol (such as ISO/IEC 18000-6C), in the communication process of general read write line and label, read write line is sent out The time of sending data is shorter than the time that only sends carrier wave, so just make this scheme reduce launch have aspect the power consumption bigger excellent Gesture.
Claims (2)
1, the radiating circuit used of super high frequency radio frequency recognition read-write machine reducing power consumption is characterized in that, contains: baseband controller, and local oscillator generator, upconverter, nonlinear power amplifier and linear power amplifier also have antenna, wherein:
Baseband controller is a single-chip microcomputer, is provided with: the local frequency control output end, and the radio-frequency (RF) tag control signal output ends, and power amplifier is selected control signal output ends;
Local oscillator generator is a frequency synthesizer, is provided with banner carrier signal output terminal, and the local frequency control input end links to each other with described single-chip microcomputer local frequency control output end, receives the local frequency control signal;
Upconverter is a frequency mixer, is provided with: banner carrier control signal input end, link to each other with the banner carrier signal output terminal of described frequency synthesizer, and receive the banner carrier signal; Also be provided with the radio-frequency (RF) tag signal input end, link to each other with the corresponding output terminal of described single-chip microcomputer, the received RF label sends the control signal of instruction;
Nonlinear power amplifier is provided with: banner carrier signal input end, link to each other with the corresponding output terminal of described frequency converter, and after the reception banner carrier signal, provide needed work capacity by the described radio-frequency (RF) tag of sky alignment;
Linear power amplifier is provided with: radio-frequency (RF) tag command signal input end, link to each other with the corresponding output terminal of described frequency mixer, and received RF label instructions signal behind the received RF label instructions signal, sends instruction by the described radio-frequency (RF) tag of sky alignment;
Wherein, described single-chip microcomputer sends command signal according to following steps to radio-frequency (RF) tag:
Step (1), described single-chip microcomputer starts linear power amplifier, in time t1,, send instruction and provide work required energy for it to described radio-frequency (RF) tag through sending the command signal that power is P to radio-frequency (RF) tag behind described frequency mixer, linear power amplifier, the antenna;
Step (2), described single-chip microcomputer cuts out linear power amplifier, starts nonlinear power amplifier, and after passing through described frequency mixer, non-linear amplifier successively, send power by described antenna and also be the banner carrier signal of P, for described radio-frequency (RF) tag provides work required energy;
Step (3), described single-chip microcomputer is received replying of described radio-frequency (RF) tag through behind the tag responses stand-by period t2;
Step (4), described single-chip microcomputer is calculated as follows the power consumption P2 of described radiating circuit:
P2＝(P*t1/y1+P*t2/y2)/(t1+t2)，
Wherein y1 is the efficient of linear power amplifier, and y2 is the efficient of nonlinear power amplifier, y2＞y1, t2＞t1.
2, the radiating circuit used of super high frequency radio frequency recognition read-write machine reducing power consumption according to claim 1, it is characterized in that described linear power amplifier and nonlinear power amplifier are merged into a duty controlled power amplifier, can be operated in linear amplification state and non-linear magnifying state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101150886A CN100552692C (en) | 2008-06-16 | 2008-06-16 | The radiating circuit that a kind of super high frequency radio frequency recognition read-write machine reducing power consumption is used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101150886A CN100552692C (en) | 2008-06-16 | 2008-06-16 | The radiating circuit that a kind of super high frequency radio frequency recognition read-write machine reducing power consumption is used |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101299232A true CN101299232A (en) | 2008-11-05 |
| CN100552692C CN100552692C (en) | 2009-10-21 |
Family
ID=40079056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008101150886A Expired - Fee Related CN100552692C (en) | 2008-06-16 | 2008-06-16 | The radiating circuit that a kind of super high frequency radio frequency recognition read-write machine reducing power consumption is used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100552692C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122341A (en) * | 2010-12-27 | 2011-07-13 | 北京中电华大电子设计有限责任公司 | Power consumption processing method for encryption and authentication of ultrahigh-frequency passive electronic tag |
| CN102156850A (en) * | 2011-04-22 | 2011-08-17 | 湖南大学 | UHF (Ultra High Frequency) RFID (Radio Frequency Identification) gateway blind spot testing system and probabilistic forecasting method |
| CN102799905A (en) * | 2011-05-23 | 2012-11-28 | 成都阿艾夫通信有限公司 | Method for adjusting communication distance by using active radio frequency identification (RFID) system |
| CN103400092A (en) * | 2013-07-10 | 2013-11-20 | 南京航空航天大学 | Surface acoustic wave reader receiving link structure based on amplitude code and working method thereof |
| CN105809222A (en) * | 2016-03-30 | 2016-07-27 | 上海复亚电子科技有限公司 | Ultrahigh frequency radio frequency identification reader-writer transmitter framework based on power amplifier switching mechanism |
| CN105897637A (en) * | 2016-03-30 | 2016-08-24 | 上海复亚微电子有限公司 | Ultrahigh frequency radio frequency identification (UHF RFID) reader-writer transmitter framework based power modulation mode |
| CN111830540A (en) * | 2019-04-15 | 2020-10-27 | 江苏星宇芯联电子科技有限公司 | Ultralow-power-consumption Beidou RDSS navigation chip based on artificial intelligence technology |
-
2008
- 2008-06-16 CN CNB2008101150886A patent/CN100552692C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122341B (en) * | 2010-12-27 | 2014-01-15 | 北京中电华大电子设计有限责任公司 | Power consumption processing method for encryption and authentication of ultrahigh-frequency passive electronic tag |
| CN102122341A (en) * | 2010-12-27 | 2011-07-13 | 北京中电华大电子设计有限责任公司 | Power consumption processing method for encryption and authentication of ultrahigh-frequency passive electronic tag |
| CN102156850A (en) * | 2011-04-22 | 2011-08-17 | 湖南大学 | UHF (Ultra High Frequency) RFID (Radio Frequency Identification) gateway blind spot testing system and probabilistic forecasting method |
| CN102156850B (en) * | 2011-04-22 | 2013-11-06 | 湖南大学 | probabilistic forecasting method of UHF (Ultra High Frequency) RFID (Radio Frequency Identification) gateway blind spot testing system |
| CN102799905B (en) * | 2011-05-23 | 2015-11-18 | 阿艾夫技术有限公司 | Initiatively rfid system regulates the method for communication distance |
| CN102799905A (en) * | 2011-05-23 | 2012-11-28 | 成都阿艾夫通信有限公司 | Method for adjusting communication distance by using active radio frequency identification (RFID) system |
| CN103400092A (en) * | 2013-07-10 | 2013-11-20 | 南京航空航天大学 | Surface acoustic wave reader receiving link structure based on amplitude code and working method thereof |
| CN103400092B (en) * | 2013-07-10 | 2016-04-13 | 南京航空航天大学 | A kind of SAW reader receiver structure based on amplitude coding and method of work thereof |
| CN105809222A (en) * | 2016-03-30 | 2016-07-27 | 上海复亚电子科技有限公司 | Ultrahigh frequency radio frequency identification reader-writer transmitter framework based on power amplifier switching mechanism |
| CN105897637A (en) * | 2016-03-30 | 2016-08-24 | 上海复亚微电子有限公司 | Ultrahigh frequency radio frequency identification (UHF RFID) reader-writer transmitter framework based power modulation mode |
| CN105897637B (en) * | 2016-03-30 | 2019-04-05 | 上海复亚智能科技有限公司 | Super high frequency radio frequency recognition read-write machine transmitter architecture based on power modulation mode |
| CN111830540A (en) * | 2019-04-15 | 2020-10-27 | 江苏星宇芯联电子科技有限公司 | Ultralow-power-consumption Beidou RDSS navigation chip based on artificial intelligence technology |
| CN111830540B (en) * | 2019-04-15 | 2023-03-21 | 江苏星宇芯联电子科技有限公司 | Ultralow-power-consumption Beidou RDSS navigation chip based on artificial intelligence technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100552692C (en) | 2009-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100552692C (en) | The radiating circuit that a kind of super high frequency radio frequency recognition read-write machine reducing power consumption is used | |
| US8570172B2 (en) | RFID system with distributed transmitters | |
| EP1719071B1 (en) | Multi-mode transponder | |
| US8994508B2 (en) | Inclusive or exclusive RFID tag interrogation and query round | |
| CN101385035B (en) | Wireless communication system | |
| CN101299229B (en) | Radio frequency identification devices | |
| CN201057561Y (en) | Fixed radio frequency reader-writer | |
| CN101911092A (en) | Interrogation of RFID communication units | |
| Iannello et al. | Energy management policies for passive RFID sensors with RF-energy harvesting | |
| CN101770683A (en) | Article monitoring method and system based on radio frequency identification technology | |
| CN101025784A (en) | Active RFID system anti-collision method | |
| CN101320419A (en) | Ultrahigh frequency RFID label reader-writer | |
| WO2004006176A3 (en) | Reader interfacing device | |
| CN103020673A (en) | Article positioning system and method of RFID (Radio Frequency Identification) tag | |
| CN103053118B (en) | Hybrid architecture for radio frequency identification and packet radio communication | |
| CN103198283A (en) | Harmonic radio frequency identification system | |
| CN104732254A (en) | Radio frequency identification reader and writer | |
| Wu et al. | Millimeter-wave identification for future sensing, tracking, positioning and communicating systems | |
| CN102682250A (en) | Battery auxiliary radio frequency identification device (RFID) label chip signal reflecting method | |
| CN101482935B (en) | Active RFID label used for container electronic seal and its reading device | |
| CN103942513A (en) | Mobile reader | |
| CN111476335B (en) | RFID electronic tag, RFID chip and commodity | |
| CN103500355A (en) | Active RFID (radio frequency identification) tag with solid-state switch | |
| CN203520442U (en) | Active RFID tag with solid-state switch | |
| CN202904616U (en) | Radio frequency identification tag device using WCDMA technology and radio frequency identification tag system using WCDMA technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20091021 Termination date: 20170616 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |