CN102314584B - Micro-energy acquisition control device of novel RFID (Radio Frequency Identification) tag - Google Patents
Micro-energy acquisition control device of novel RFID (Radio Frequency Identification) tag Download PDFInfo
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- CN102314584B CN102314584B CN201010229844.5A CN201010229844A CN102314584B CN 102314584 B CN102314584 B CN 102314584B CN 201010229844 A CN201010229844 A CN 201010229844A CN 102314584 B CN102314584 B CN 102314584B
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Abstract
The invention discloses a micro-energy acquisition control device of a novel RFID (Radio Frequency Identification) tag, wherein an energy conversion unit is connected with a rapid access capacitor C3 for directly charging the rapid access capacitor C3; a resistor R5 and a resistor R6, connected with one end of the capacitor C3, are connected to a charging switch Q3, and the Q3 is connected with a resistor R1 and a charging switch Q1 to control the charging of a super capacitor C4; an energy conversion unit is connected with a voltage detection circuit constituted by resistors R3, R7 and R8, a diode D6 and a comparator U1 through a diode D3, and controls a switch circuit constituted by a control resistor R3, a capacitor C2 and a field-effect tube Q2 through a diode D5; and a control end of an electronic switch is connected to a retaining circuit of a capacitor C2 and a field-effect tube Q4. According to the invention, by replacing a battery in an active RFID tag with the micro-energy acquisition control device, a novel quasi passive RFID tag is generated, the novel quasi passive RFID tag is beneficial to overcoming of the defects of active and passive RFID tags and can achieve the effect of eh active RFID tag without maintenance.
Description
Technical field:
The present invention relates to a kind of novel micro-energy acquisition control device, be mainly used in the micro-energy acquisition control device of novel RFID label of the Power supply of RFID (radio-frequency (RF) identification) label.
Background technology:
At present, in RFID field, label is generally divided into passive label and active label.Passive label is without battery, but reading/writing distance is near, high directivity, and fabricating yard restriction is many; Active label reading/writing distance is far away, but must regularly replace battery, uses trouble, and limits more.
Summary of the invention:
The object of the invention is to overcome the defect of existing active RFID tag and passive RFID tags, provide a kind of novel RFID label micro-energy acquisition control device, substitute the battery in active RFID, thereby produce a kind of novelly both without changing battery, have again that passive RFID tags is non-maintaining concurrently, an accurate passive RFID tags of the advantages such as long-life and the long distance of active RFID tag, omnirange, read-write terminal miniaturization.
For reaching above-mentioned purpose, the present invention adopts following technical scheme:
The micro-energy acquisition control device of novel RFID label, comprises that energy conversion unit connects energy conversion control circuit and then connects active RFID tag.
Described energy conversion unit connects quick access capacitor C 3 and directly for quick access capacitor C 3, charges; The resistance R 5 and the resistance R 6 that are connected to capacitor C 3 one end are connected to charge switch Q3, and Q3 is connected with charge switch Q1 with resistance R 1 and controls super capacitor C4 charging; Energy conversion unit is connected with resistance R 3, R7, R8, diode D6 and the voltage detecting circuit of comparer U1 composition by diode D3, by the on-off circuit of diode D5 controlling resistance R3, capacitor C 2 and field effect transistor Q2 composition; The control end of electronic switch is connected to capacitor C 2, field effect transistor Q4 holding circuit.
Adopt technique scheme, the present invention is by using this device to substitute the battery in active RFID tag, produced a kind of novel accurate passive RFID tags, this label has effectively overcome active and shortcoming passive RFID tags, can, under the condition of Maintenance free, reach the effect of active RFID tag.
Accompanying drawing explanation:
Below with accompanying drawing to the detailed description of the invention:
Fig. 1 is the concrete application form of the present invention;
Fig. 2 is control circuit schematic diagram of the present invention.
Embodiment:
Below in conjunction with drawings and Examples, the present invention is described in detail:
Embodiments of the present invention as shown in Figure 1 and Figure 2, the micro-energy acquisition control device of novel RFID label, comprises that energy conversion unit 1 connects energy conversion control circuit 2 and then connects active RFID tag 3.
Described energy conversion unit 1 connects quick access capacitor C 3 201 and directly for quick access capacitor C 3, charges; The resistance R 5 202 and the resistance R 6 203 that are connected to capacitor C 3 one end are connected to charge switch Q3 204, and Q3 is connected with charge switch Q1 206 with resistance R 1 205 and controls super capacitor C4 207 and charge; Energy conversion unit 1 is connected with resistance R 2 209, R7 210, R8 211, diode D6 212 and the voltage detecting circuit that comparer U1 213 forms by diode D3 208, the on-off circuit consisting of diode D5 214 controlling resistance R3 215, capacitor C 2 216 and field effect transistor Q2 217; The control end of electronic switch is connected to capacitor C 2, field effect transistor Q4 218 holding circuits.
During normal mode of operation, first the voltage that energy conversion unit provides charge to quick access capacitor C 3, and voltage arrives after the value of setting, and voltage comparator U1 exports control level, opens electronic switch Q2, installs tag-powered to RFID.RFID label return control signal, controls maintained switch Q4 and takes over the control to electronic switch Q2.If R5, R6 have detected excess energy, open super capacitor charge switch Q1, Q3, give super capacitor C4 charging.
Super capacitor discharge mode, during energy shortage that energy conversion device provides, if super capacitor C4 electric weight abundance, super capacitor C4 directly gives RFID tag-powered by diode D4.
Inspire mode of operation, when quick access electric capacity and the equal deficiency of super capacitor energy, super capacitor charge switch Q1, Q3 close, and the energy that energy conversion unit provides is all used for charging to quick access capacitor C 3, enters fast normal mode of operation.
The present invention is by using this device to substitute the battery in active RFID tag, produced a kind of novel accurate passive RFID tags, this label has effectively overcome active and shortcoming passive RFID tags, can, under the condition of Maintenance free, reach the effect of active RFID tag.
Claims (1)
1. the micro-energy acquisition control device of novel RFID label, it is characterized in that: comprise that energy conversion unit connects energy conversion control circuit and then connects active RFID tag, described energy conversion unit connects quick access capacitor C 3 and directly for quick access capacitor C 3, charges; The resistance R 5 and the resistance R 6 that are connected to capacitor C 3 one end are connected to charge switch Q3, and Q3 is connected with charge switch Q1 with resistance R 1 and controls super capacitor C4 charging; Energy conversion unit is connected with resistance R 2, R7, R8, diode D6 and the voltage detecting circuit of comparer U1 composition by diode D3, by the on-off circuit of diode D5 controlling resistance R3, capacitor C 1 and field effect transistor Q2 composition; The control end of on-off circuit is connected to capacitor C 2, field effect transistor Q4 holding circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010229844.5A CN102314584B (en) | 2010-07-07 | 2010-07-07 | Micro-energy acquisition control device of novel RFID (Radio Frequency Identification) tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010229844.5A CN102314584B (en) | 2010-07-07 | 2010-07-07 | Micro-energy acquisition control device of novel RFID (Radio Frequency Identification) tag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102314584A CN102314584A (en) | 2012-01-11 |
| CN102314584B true CN102314584B (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010229844.5A Active CN102314584B (en) | 2010-07-07 | 2010-07-07 | Micro-energy acquisition control device of novel RFID (Radio Frequency Identification) tag |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104517083B (en) * | 2014-12-12 | 2017-10-17 | 广西瀚特信息产业股份有限公司 | A kind of electronic tag and its control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996352A (en) * | 2006-12-28 | 2007-07-11 | 复旦大学 | Semi-active RFID tag supporting wireless charging |
| CN201788514U (en) * | 2010-07-07 | 2011-04-06 | 厦门硅田系统工程有限公司 | Novel RFID (radio frequency identification) tag micro-energy collection control device |
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2010
- 2010-07-07 CN CN201010229844.5A patent/CN102314584B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996352A (en) * | 2006-12-28 | 2007-07-11 | 复旦大学 | Semi-active RFID tag supporting wireless charging |
| CN201788514U (en) * | 2010-07-07 | 2011-04-06 | 厦门硅田系统工程有限公司 | Novel RFID (radio frequency identification) tag micro-energy collection control device |
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| CN102314584A (en) | 2012-01-11 |
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