CN106874984A - A kind of semi-active label electric power management circuit - Google Patents
A kind of semi-active label electric power management circuit Download PDFInfo
- Publication number
- CN106874984A CN106874984A CN201510914990.4A CN201510914990A CN106874984A CN 106874984 A CN106874984 A CN 106874984A CN 201510914990 A CN201510914990 A CN 201510914990A CN 106874984 A CN106874984 A CN 106874984A
- Authority
- CN
- China
- Prior art keywords
- circuit
- electric power
- semi
- power management
- active label
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- 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.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0702—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0712—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of triggering distinct operating modes or functions dependent on the strength of an energy or interrogation field in the proximity of the record carrier
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
Abstract
A kind of semi-active label electric power management circuit, the rectification circuit being made up of single-stage Dickson charge pump circuit, mu balanced circuit, mode control circuit, Voltage Reference source circuit are constituted.The zero threshold mos pipe connected using diode replaces diode, threshold value loss is greatly reduced, it is suppressed that reverse leakage, so as to improve the energy conversion efficiency of rectifier；Mode control circuit is devised, allows the distance of the electric power system of label according to it with reader by external radio-frequency signal or internal battery powers, meanwhile, the big module of power consumption is turned off in the passive mode, add communication distance, extend battery life.
Description
Art
The present invention relates to a kind of semi-active label electric power management circuit, it is adaptable to RF application.
Background technology
Radio frequency identification (RFID) is the non-contact automatic identification technology that a kind of utilization radio communication is realized, has the advantages that without manual intervention, is hardly damaged, and fast development and extensive use have been obtained in recent years.Common rfid system includes reader, three cores of label and data processor.Wherein, label is the data medium of rfid system.The difference of electric energy mode is obtained according to label, passive, active and semi-active label can be divided into.Electromagnetic induction powered operation of the passive label outside, therefore data transmission distance and signal intensity be restricted., from charged pool, energy is sufficient, and signal transmitting range is remote, but its service life is limited by battery capacity for active label.Semi-active label falls between, though self-contained battery, the battery is served only for activation system.After system activation, label enters people's passive operation modes, is powered without battery.Under the promotion of generation information technology, Internet of Things etc. to label function requirement more and more higher, semi-active label because its working year limit for length, identification apart from it is remote the advantages of greatly paid close attention to.It is operated in the key component in the semi-active label chip circuit of 2.45GHz frequency ranges --- charge pump.It is responsible for for high frequency ac signal being converted to DC level, is that whole label chip is powered.Charge pump determines the reading distance and induction sensitivity of label, is the important component of whole chip.
2.45GHzRFID systems are that data are transmitted to emission electromagnetic wave using reader and the respective antenna of label, and transmitting procedure follows the spatial rule of electromagnetic wave.Because the performance of label is limited by communication mode, mainly two aspects of maximum functional distance and stability.The place that semi-active label is different from passive label is main in energy conversion and power management section.In passive label, it is sufficiently large to simply enter signal intensity, can make chip circuit normal work, and label will start.And the self-contained battery of semi-active label, while energy is obtained from input radio frequency signal again, accordingly, it would be desirable to a special PMU, to control supply path.Big energy can be rapidly consumed after label chip circuit start, therefore, it is necessary to design an accurate, electric power management circuit for low-power consumption, it is to avoid chip circuit is started by mistake and loses big energy, and the service life of battery is extended as far as possible.Therefore, research semi-active label electric power management circuit is necessary.
The content of the invention
The present invention provides a kind of semi-active label electric power management circuit, circuit improves the energy conversion efficiency of rectifier, allow the distance of the electric power system of label according to it with reader by external radio-frequency signal or internal battery powers, simultaneously, the big module of power consumption is turned off in the passive mode, communication distance is increased, battery life is extended.
The technical solution adopted in the present invention is.
RFID semi-active labels electric power management circuit replaces diode using the zero threshold mos pipe that diode is connected, and threshold value loss is greatly reduced, it is suppressed that reverse leakage, so as to improve the energy conversion efficiency of rectifier；Mode control circuit is devised, allows the distance of the electric power system of label according to it with reader by external radio-frequency signal or internal battery powers, meanwhile, the big module of power consumption is turned off in the passive mode, add communication distance, extend battery life.
In the active label electric power management circuit, the radio-frequency alternating current signal that rectifier receives antenna is converted to DC voltage, and galvanic current pressure V is exported after mu balanced circuit and voltage reference source processing of circuit.When tag distances read write line is nearer, Vdd-Gen is more than internal cell Vdd-bat, now labeling task is in passive mode, powered by external radio-frequency signal, meanwhile, the enable signal of mode control circuit output is 0, turns off the work big module of power consumption in an active mode, such as low-noise amplifier, modulator and power amplifier, to save energy.Conversely, labeling task is in active mode, by internal battery powers, it is 1 to enable signal, and signal is launched by after modulator and power amplifier by antenna.Due to have turned off the big module of power consumption in passive mode, the power consumption of label is substantially reduced, meanwhile, and because electric power system internally can switch between battery and external radio-frequency signal, the communication distance and service life of label are greatly increased.
In the single-stage Dickson charge pump circuit, when RF is negative, DC conductings, DR cut-offs, CC and DC constitutes clamp circuit, for late-class circuit provides DC references.When VR is positive, because electric capacity Cc both end voltages difference can not be mutated, DC cut-offs, DR conductings, DR forms rectification and combines with CL.
In the mu balanced circuit, R0 is control resistance, works as VOH<During VTHP+2VTHN, the upper no currents of R1 pass through, and do not produce pressure drop, and discharge current, M8 cut-offs are controlled by M3.Work as VTHP+2VTHN<VOH<During 2VTHP+2VTHN, MO~M3 is gradually turned on, and due to pressure drop very little on R1, M3 still cannot be turned on.Work as VR+VTHPM0>During VTHPM3, M3 conductings are also switched on M6, start leakage current.
In the mode control circuit, the Vdd-Gen and the Vdd-bat of internal cell that two-stage open loop comparator is produced by comparison voltage reference source produce an enable signal Enable for binary system output.If Vm is more than VP, M1 conductings, M2 cut-offs, VGS6 is much smaller than VTP, so M6 ends, is output as low level, otherwise be output as high level.
Voltage generation circuit on the basis of the first half of the voltage reference source, obtains metastable magnitude of voltage, and latter half is an amplifier, for late-class circuit provides enough driving forces, the effect that starting voltage is followed.The electric capacity and resistance of output stage are to ensure two grades of miller compensation electric capacity and zero suppression resistance of the work of amplifier loop stability.
The beneficial effects of the invention are as follows：Circuit improves the energy conversion efficiency of rectifier, allows the distance of the electric power system of label according to it with reader by external radio-frequency signal or internal battery powers, meanwhile, communication distance is increased, extend battery life.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is single-stage Dickson charge pump of the invention.
Fig. 2 is the rectifier of N grades of charge pump composition of the invention.
Fig. 3 is mu balanced circuit of the invention.
Fig. 4 is mode control circuit of the invention.
Fig. 5 is Voltage Reference source circuit of the invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Such as Fig. 1,2, in single-stage Dickson charge pump circuit, when RF is negative, DC conductings, DR cut-offs, CC and DC constitutes clamp circuit, for late-class circuit provides DC references.When VR is positive, because electric capacity Cc both end voltages difference can not be mutated, DC cut-offs, DR conductings, DR forms rectification and combines with CL.
Such as Fig. 3, in mu balanced circuit, R0 is control resistance, works as VOH<During VTHP+2VTHN, the upper no currents of R1 pass through, and do not produce pressure drop, and discharge current, M8 cut-offs are controlled by M3.Work as VTHP+2VTHN<VOH<During 2VTHP+2VTHN, MO~M3 is gradually turned on, and due to pressure drop very little on R1, M3 still cannot be turned on.Work as VR+VTHPM0>During VTHPM3, M3 conductings are also switched on M6, start leakage current.
Such as Fig. 4, in mode control circuit, the Vdd-Gen that two-stage open loop comparator is produced by the comparison voltage reference source and enable signal Enable that the Vdd-bat of internal cell produces a binary system to export.If Vm is more than VP, M1 conductings, M2 cut-offs, VGS6 is much smaller than VTP, so M6 ends, is output as low level, otherwise be output as high level.
As Fig. 5, voltage generation circuit on the basis of the first half of voltage reference source obtain metastable magnitude of voltage, latter half is an amplifier, for late-class circuit provides enough driving forces, the effect that starting voltage is followed.The electric capacity and resistance of output stage are to ensure two grades of miller compensation electric capacity and zero suppression resistance of the work of amplifier loop stability.
Claims (7)
1. a kind of semi-active label electric power management circuit, it is characterized in that：Rectification circuit that described semi-active label electric power management circuit is made up of single-stage Dickson charge pump circuit, mu balanced circuit, mode control circuit, Voltage Reference source circuit are constituted.
2. a kind of semi-active label electric power management circuit according to claim 1, it is characterized in that：The active label electric power management circuit replaces diode using the zero threshold mos pipe that diode is connected, and threshold value loss is greatly reduced, it is suppressed that reverse leakage, so as to improve the energy conversion efficiency of rectifier.
3. a kind of semi-active label electric power management circuit according to claim 1, it is characterized in that：In described single-stage Dickson charge pump circuit, when RF is negative, DC conductings, DR cut-offs, CC and DC constitutes clamp circuit, for late-class circuit provides DC references.
4. a kind of semi-active label electric power management circuit according to claim 1, it is characterized in that：In described mu balanced circuit, R0 is control resistance, works as VOH
<During VTHP+2VTHN, the upper no currents of R1 pass through, and do not produce pressure drop, and discharge current, M8 cut-offs are controlled by M3.
5. a kind of semi-active label electric power management circuit according to claim 1, it is characterized in that：In the mode control circuit, the Vdd-Gen and the Vdd-bat of internal cell that two-stage open loop comparator is produced by comparison voltage reference source produce an enable signal Enable for binary system output.
6. a kind of semi-active label electric power management circuit according to claim 1, it is characterized in that：Voltage generation circuit on the basis of the first half of the voltage reference source, obtains metastable magnitude of voltage, and latter half is an amplifier, for late-class circuit provides enough driving forces, the effect that starting voltage is followed.
7. a kind of semi-active label electric power management circuit according to claim 1, it is characterized in that：In the voltage reference source, the electric capacity and resistance of output stage are to ensure two grades of miller compensation electric capacity and zero suppression resistance of the work of amplifier loop stability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510914990.4A CN106874984A (en) | 2015-12-14 | 2015-12-14 | A kind of semi-active label electric power management circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510914990.4A CN106874984A (en) | 2015-12-14 | 2015-12-14 | A kind of semi-active label electric power management circuit |
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| Publication Number | Publication Date |
|---|---|
| CN106874984A true CN106874984A (en) | 2017-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510914990.4A Pending CN106874984A (en) | 2015-12-14 | 2015-12-14 | A kind of semi-active label electric power management circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019095302A1 (en) * | 2017-11-17 | 2019-05-23 | 苏州点格信息科技有限公司 | Positioning tag powered by indoor light energy |
| CN110147694A (en) * | 2019-06-15 | 2019-08-20 | 吴新胜 | A kind of RF front-end circuit and radio frequency tag circuit |
| CN112567595A (en) * | 2018-08-10 | 2021-03-26 | 尤温洛克公司 | Radio frequency energy acquisition circuit and communication equipment comprising same |
| CN112949809A (en) * | 2021-04-14 | 2021-06-11 | 贵州振华天通设备有限公司 | RFID electronic tag and tag power-on communication method |
-
2015
- 2015-12-14 CN CN201510914990.4A patent/CN106874984A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019095302A1 (en) * | 2017-11-17 | 2019-05-23 | 苏州点格信息科技有限公司 | Positioning tag powered by indoor light energy |
| CN112567595A (en) * | 2018-08-10 | 2021-03-26 | 尤温洛克公司 | Radio frequency energy acquisition circuit and communication equipment comprising same |
| US11146106B2 (en) | 2018-08-10 | 2021-10-12 | Uwinloc | Radio-frequency energy harvesting circuit and communication device integrating such a radio-frequency energy harvesting circuit |
| CN112567595B (en) * | 2018-08-10 | 2022-07-19 | 尤温洛克公司 | Radio frequency energy acquisition circuit and communication equipment comprising same |
| CN110147694A (en) * | 2019-06-15 | 2019-08-20 | 吴新胜 | A kind of RF front-end circuit and radio frequency tag circuit |
| CN110147694B (en) * | 2019-06-15 | 2022-04-26 | 上海航空印刷有限公司 | Radio frequency front-end circuit and radio frequency tag circuit |
| CN112949809A (en) * | 2021-04-14 | 2021-06-11 | 贵州振华天通设备有限公司 | RFID electronic tag and tag power-on communication method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |