CN203588296U - Active RFID tag - Google Patents
Active RFID tag Download PDFInfo
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- CN203588296U CN203588296U CN201320781502.3U CN201320781502U CN203588296U CN 203588296 U CN203588296 U CN 203588296U CN 201320781502 U CN201320781502 U CN 201320781502U CN 203588296 U CN203588296 U CN 203588296U
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- antenna
- solar panel
- rfid tag
- active rfid
- pole double
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Abstract
The utility model relates to an active RFID tag comprising a housing. A memory chip, a first antenna, and a second antenna are arranged inside the housing; and the first antenna and the second antenna are connected with the memory chip by a single-pole double-throw switch. A filter circuit arranged between the single-pole double-throw switch and the memory chip includes a fixed inductor and an adjustable inductor, wherein the two inductors are arranged in series; and a first capacitor, a second capacitor, and a third capacitor are respectively connected in series between the two ends of the fixed inductor and the adjustable inductor and the ground terminal as well as between the common terminal of the fixed inductor and the adjustable inductor and the ground terminal. On the basis of the technical scheme, the provided active RFID tag has the following beneficial effects: two antennas including the first antenna being an active one and the second antenna being a passive one are arranged; complementation of two work modes is realized based on the single-pole double-throw switch; and the first antenna is used when the high-intensity signal is needed and the second antenna is used when no strict requirement exists, so that electric energy is saved. Besides, because of the sealing pad, the electronic device in the housing can be protected from being influenced by dust and water vapour.
Description
Technical field
The utility model relates to a kind of wireless-identification device, especially a kind of active RFID tag.
Background technology
Along with the development of wireless recognition technique, the application of RFID label in recent years is more and more extensively sent out.RFID label is divided into the kinds such as active and passive.Active RFID tag signal intensity ratio passive RFID tags is strong, applied widely.But existing active RFID tag is still lower to the receiving ability of signal, signal fault-tolerant ability is poor.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of active RFID tag, can solve the deficiencies in the prior art, has improved the receiving ability of signal, has reduced the interference of signal, and service time of battery is long.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A kind of active RFID tag, comprise shell, in shell, be provided with storage chip and the first antenna and the second antenna, the first antenna is connected with storage chip by single-pole double-throw switch (SPDT) with the second antenna, between single-pole double-throw switch (SPDT) and storage chip, be provided with filtering circuit, filtering circuit comprises fixed inductance and the controllable impedance that series connection arranges, at the two ends of fixed inductance and controllable impedance and the common port of fixed inductance and controllable impedance respectively and between the earth end, be in series with the first electric capacity, the second electric capacity and the 3rd electric capacity, between the first antenna and single-pole double-throw switch (SPDT), be provided with triode, the first antenna is connected to the base stage of triode, the collector of triode is connected with battery feed, the emitter of triode is connected to storage chip by current-limiting resistance, the solar panel that the arranged outside of shell has some layers to be arranged in parallel, is provided with gap between adjacent two solar panels, and solar panel is connected to battery feed.
As preferably, described solar panel is recess shape, and the both sides of solar panel and the bottom surface of solar panel are 45 ° of angles.
As preferably, described solar panel adopts gallium arsenide solar cell plate.
As preferably, the interface of described shell is provided with sealing gasket.
The beneficial effect that adopts technique scheme to bring is: the utility model is provided with two antennas, the first antenna is active antenna, the second antenna is passive antenna, by single-pole double-throw switch (SPDT), realized the complementation of two kinds of mode of operations, when needs high-intensity signal, use the first antenna, when there is no rigid requirement, use the second antenna, saves energy.Filtering circuit can be realized the filtering of multiband noise by adjusting controllable impedance.Triode has been realized the enlarging function that receives signal.The solar panel be arrangeding in parallel can improve the utilization factor of sunlight in the situation that laying area is constant, and hand-held or fixed labels is convenient in the design of recess shape under the prerequisite that does not affect daylighting.The electron device of sealing gasket in can protecting sheathing avoided the impact of dust and steam.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment of the utility model.
Fig. 2 is the schematic diagram of filtering circuit in embodiment of the utility model.
Fig. 3 is the schematic diagram of transistor amplifier in embodiment of the utility model.
Fig. 4 is the scheme of installation of solar cell in embodiment of the utility model.
In figure: 1, shell; 2, storage chip; 3, the first antenna; 4, the second antenna; 5, single-pole double-throw switch (SPDT); 6, filtering circuit; 7, solar panel; 8, gap; 9, sealing gasket; L1, fixed inductance; L2, controllable impedance; GND, the earth end; C1, the first electric capacity; C2, the second electric capacity; C3, the 3rd electric capacity; Q, triode; R, current-limiting resistance; Vcc, battery feed.
Embodiment
With reference to Fig. 1-4, embodiment of the utility model comprises shell 1, in shell 1, be provided with storage chip 2 and the first antenna 3 and the second antenna 4, the first antenna 3 is connected with storage chip by single-pole double-throw switch (SPDT) 5 with the second antenna (4), between single-pole double-throw switch (SPDT) 5 and storage chip 2, be provided with filtering circuit 6, filtering circuit 6 comprises fixed inductance L1 and the controllable impedance L2 that series connection arranges, at the two ends of fixed inductance L1 and controllable impedance L2 and the common port of fixed inductance L1 and controllable impedance L2 respectively and between the earth end GND, be in series with the first capacitor C 1, the second capacitor C 2 and the 3rd capacitor C 3, between the first antenna 3 and single-pole double-throw switch (SPDT) 5, be provided with triode Q, the first antenna 3 is connected to the base stage of triode Q, the collector of triode Q is connected with battery feed Vcc, the emitter of triode Q is connected to storage chip 2 by current-limiting resistance R, the solar panel 7 that the arranged outside of shell 1 has some layers to be arranged in parallel, is provided with gap 8 between adjacent two solar panels 7, and solar panel 7 is connected to battery feed.
It should be noted that described solar panel 7 is recess shape, the bottom surface of the both sides of solar panel 7 and solar panel 7 is 45 ° of angles.
It should be noted that described solar panel 7 adopts gallium arsenide solar cell plate.
In addition, the interface of described shell 1 is provided with sealing gasket 9.
Principle of work of the present utility model is: the utility model is provided with two antennas, the first antenna 3 is active antenna, the second antenna 4 is passive antenna, by single-pole double-throw (SPDT), open 5 complementations that realized two kinds of mode of operations, when needs high-intensity signal, use the first antenna 3, when there is no rigid requirement, use the second antenna 4, saves energy.Filtering circuit 6 can be realized the filtering of multiband noise by adjusting controllable impedance L2.Triode Q has realized the enlarging function that receives signal.The solar panel 7 be arrangeding in parallel can improve the utilization factor of sunlight in the situation that laying area is constant, and hand-held or fixed labels is convenient in the design of recess shape under the prerequisite that does not affect daylighting.The electron device of sealing gasket 9 in can protecting sheathing 1 avoided the impact of dust and steam.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. an active RFID tag, it is characterized in that: comprise shell (1), in shell (1), be provided with storage chip (2) and the first antenna (3) and the second antenna (4), the first antenna (3) is connected with storage chip by single-pole double-throw switch (SPDT) (5) with the second antenna (4), between single-pole double-throw switch (SPDT) (5) and storage chip (2), be provided with filtering circuit (6), filtering circuit (6) comprises fixed inductance (L1) and the controllable impedance (L2) that series connection arranges, at the two ends of fixed inductance (L1) and controllable impedance (L2) and the common port of fixed inductance (L1) and controllable impedance (L2) respectively and between the earth end (GND), be in series with the first electric capacity (C1), the second electric capacity (C2) and the 3rd electric capacity (C3), between the first antenna (3) and single-pole double-throw switch (SPDT) (5), be provided with triode (Q), the first antenna (3) is connected to the base stage of triode (Q), the collector of triode (Q) is connected with battery feed (Vcc), the emitter of triode (Q) is connected to storage chip (2) by current-limiting resistance (R), the solar panel (7) that the arranged outside of shell (1) has some layers to be arranged in parallel, is provided with gap (8) between adjacent two solar panels (7), solar panel (7) is connected to battery feed (Vcc).
2. active RFID tag according to claim 1, is characterized in that: described solar panel (7) is recess shape, and the bottom surface of the both sides of solar panel (7) and solar panel (7) is 45 ° of angles.
3. active RFID tag according to claim 1, is characterized in that: described solar panel (7) adopts gallium arsenide solar cell plate.
4. active RFID tag according to claim 1, is characterized in that: the interface of described shell (1) is provided with sealing gasket (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781502.3U CN203588296U (en) | 2013-12-03 | 2013-12-03 | Active RFID tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781502.3U CN203588296U (en) | 2013-12-03 | 2013-12-03 | Active RFID tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203588296U true CN203588296U (en) | 2014-05-07 |
Family
ID=50586180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320781502.3U Expired - Fee Related CN203588296U (en) | 2013-12-03 | 2013-12-03 | Active RFID tag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203588296U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104597352A (en) * | 2015-01-21 | 2015-05-06 | 西安科技大学 | Power quality monitoring system |
| CN105070007A (en) * | 2015-07-24 | 2015-11-18 | 西安科技大学 | Wireless sensor network node |
| CN109525270A (en) * | 2018-11-23 | 2019-03-26 | 上海庆科信息技术有限公司 | Wiring board and wireless communication module |
| CN110221323A (en) * | 2019-05-28 | 2019-09-10 | 深圳市广和通无线股份有限公司 | GPS antenna component and system |
-
2013
- 2013-12-03 CN CN201320781502.3U patent/CN203588296U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104597352A (en) * | 2015-01-21 | 2015-05-06 | 西安科技大学 | Power quality monitoring system |
| CN105070007A (en) * | 2015-07-24 | 2015-11-18 | 西安科技大学 | Wireless sensor network node |
| CN109525270A (en) * | 2018-11-23 | 2019-03-26 | 上海庆科信息技术有限公司 | Wiring board and wireless communication module |
| CN109525270B (en) * | 2018-11-23 | 2023-08-08 | 上海庆科信息技术有限公司 | Circuit board and wireless communication module |
| CN110221323A (en) * | 2019-05-28 | 2019-09-10 | 深圳市广和通无线股份有限公司 | GPS antenna component and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140507 Termination date: 20141203 |
|
| EXPY | Termination of patent right or utility model |