CN202940324U - Electronic tag anti-theft detection device - Google Patents
Electronic tag anti-theft detection device Download PDFInfo
- Publication number
- CN202940324U CN202940324U CN 201220663000 CN201220663000U CN202940324U CN 202940324 U CN202940324 U CN 202940324U CN 201220663000 CN201220663000 CN 201220663000 CN 201220663000 U CN201220663000 U CN 201220663000U CN 202940324 U CN202940324 U CN 202940324U
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- frequency
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- reception antenna
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Abstract
The utility model provides an electronic tag anti-theft detection device which comprises a low-frequency transmitting antenna, a low-frequency receiving antenna and ultrahigh-frequency antennas. A coil of the low-frequency receiving antenna includes a first part and a second part which are arranged in a same plane in an axially-symmetrical way, and the first part and the second part have the same number of coil turns and are wound in opposite directions; and the two ultrahigh-frequency antennas are respectively arranged in the first part and the second part of the coil of the low-frequency receiving antenna. According to the utility model, as the first part and the second part of the coil of the low-frequency receiving antenna are wound in opposite directions, the interferences of the two parts to the ultrahigh-frequency antennas are opposite in phase, the first part and the second part are arranged symmetrically, and the two ultrahigh-frequency antennas are respectively arranged in the first part and the second part of the coil of the low-frequency receiving antenna, the interferences of the first part and the second part to the ultrahigh-frequency antennas cancel each other out, thereby solving the problem that the ultrahigh-frequency antennas and the low-frequency antennas interfere with each other when being arranged in a same channel.
Description
Technical field
The utility model relates to a kind of anti-theft device, and a kind of electronic label burglary checkout gear especially is set.
Background technology
Traditional electromagnetic wave theft prevention system detects to the alternating magnetic field of the low frequency generation of 20KHz with 10Hz with detecting antenna (transmitting antenna and reception antenna).Detected object is the permalloy soft magnetic stripe with precipitous magnetic hysteresis loop that is attached on protected object, i.e. low frequency tags.In the time of in the middle of magnetic stripe is positioned at the alternating magnetic field that transmitting antenna produces, its polarity is by remagnetization periodically.Near the non-linearly jump adding magnetic field intensity of magnetic flux density in magnetic stripe changes, and having produced thus frequency is the harmonic wave of transmitting antenna fundamental frequency, and the received antenna reception of these harmonic waves and processing produce alarm signal.Along with the appearance of Internet of Things, also more and more outstanding for the requirement of the logistics control and management aspect of commodity amount.At present, at commodity, books etc. in antitheft or administrative skill, the antitheft electronic tag that is used for commodity is low frequency tags normally.And the hyperfrequency sphere of action is wide, transmits data speed fast, usually can be used for the data storage management of commodity.Therefore, occurred a kind ofly can being used for the antitheft of commodity, can be used for again the low frequency of data storage management of commodity and the electronic tag of hyperfrequency combination, the anti-theft detection system of this label needs to detect low frequency tags, can detect ultrahigh-frequency tag again.If low-frequency antenna and ultra-high frequency antenna are arranged on same passage, easily produce mutually and disturb, like this, phenomenon will easily be misread and report by mistake to anti-theft detection system.
The utility model content
The technical problems to be solved in the utility model is: be arranged in same passage in order to solve low-frequency antenna and ultra-high frequency antenna, easily produce mutually the problem of disturbing, the utility model provides a kind of electronic label burglary checkout gear.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of electronic label burglary checkout gear, comprise low-frequency antenna and ultra-high frequency antenna, and described low-frequency antenna comprises low frequencies antenna and low frequency reception antenna; The coil of described low frequency reception antenna is comprised of the first and the second portion that arrange axisymmetricly in same plane, and the coil turn of described first and second portion is identical, around on the contrary; Described low frequencies antenna and low frequency reception antenna are around in the outside of low frequency reception antenna at a distance of certain interval; Described two ultra-high frequency antennas are separately positioned in the first and second portion of coil of low frequency reception antenna.
In order to avoid better the low frequency reception antenna to the interference of two ultra-high frequency antennas, as preferably, described two ultra-high frequency antennas are symmetrical in the symmetry axis of low frequency reception antenna relative to each other.
The beneficial effects of the utility model are, electronic label burglary checkout gear of the present utility model, the first of low frequency receiving antenna coil and second portion are around on the contrary, interference to ultra-high frequency antenna is anti-phase, first and second portion are set symmetrical mutually, and two ultra-high frequency antennas are separately positioned in the first and second portion of coil of low frequency reception antenna, first the interference with respect to ultra-high frequency antenna just in time disappears mutually with second portion, thereby solved ultra-high frequency antenna and low-frequency antenna is placed in the problem that can interfere with each other in same passage.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of first embodiment of the utility model electronic label burglary checkout gear.
Fig. 2 is the structural representation of second embodiment of the utility model electronic label burglary checkout gear.
Fig. 3 is the structural representation of the 3rd embodiment of the utility model electronic label burglary checkout gear.
Fig. 4 is the structural representation of the 4th embodiment of the utility model electronic label burglary checkout gear.
Fig. 5 is the structural representation of the 5th embodiment of the utility model electronic label burglary checkout gear.
In figure 1, the low frequencies antenna, 1-1, transmitting antenna terminals, 2, the low frequency reception antenna, 2-1, reception antenna terminals, 2-2, first, 2-3, second portion, 3, ultra-high frequency antenna.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Fig. 1-5, the structural representation of five embodiment of the utility model electronic label burglary checkout gear comprises low-frequency antenna and ultra-high frequency antenna 3, and low-frequency antenna comprises low frequencies antenna 1 and low frequency reception antenna 2.
The coil of low frequency reception antenna 2 is comprised of the 2-2 of first and the second portion 2-3 that arrange axisymmetricly in same plane, the 2-2 of first and second portion 2-3 are formed by the single line coiling, and the coil turn of the 2-2 of first and second portion 2-3 is identical, around on the contrary.Low frequencies antenna 1 is around in the outside of low frequency reception antenna 2 at a distance of certain interval with low frequency reception antenna 2.
As shown in Figure 1 and Figure 2, first and second embodiment of the present invention, the 2-2 of first and second portion 2-3 are shaped as mutual axial symmetry and centrosymmetric rectangle, two ultra-high frequency antennas 3 are separately positioned in the 2-2 of first and second portion 2-3 of coil of low frequency reception antenna 2, and two ultra-high frequency antennas 3 are relative to each other in symmetry axis or the Central Symmetry point symmetry of low frequency reception antenna 2.
As shown in Figure 3, Figure 4, the 3rd and the 4th embodiment of the present invention, the 2-2 of first and second portion 2-3 are shaped as mutual axial symmetry and centrosymmetric trapezoidal.Two ultra-high frequency antennas 3 are separately positioned in the 2-2 of first and second portion 2-3 of coil of low frequency reception antenna 2, and two ultra-high frequency antennas 3 are relative to each other in symmetry axis or the symmetrical centre point symmetry of low frequency reception antenna 2.
As shown in Figure 5, the 5th embodiment of the present invention, the 2-2 of first and second portion 2-3 are shaped as mutual axisymmetric triangle.Two ultra-high frequency antennas 3 are separately positioned in the 2-2 of first and second portion 2-3 of coil of low frequency reception antenna 2, and two ultra-high frequency antennas 3 are symmetrical in the symmetry axis of low frequency reception antenna 2 relative to each other.
In five embodiment, ultra-high frequency antenna 3 is tabular, can realize transmitting and receiving simultaneously.
In Fig. 1-5, dotted line and arrow represent the direction of winding of the coil of low frequency reception antenna 2, and namely the coil of low frequency reception antenna 2 is the winding of similar picture " 8 " word, perhaps first around the 2-2 of first, more reverse coiling second portion 2-3; Transmitting antenna terminals 1-1 is the coil two ends of low frequencies antenna 1, and reception antenna terminals 2-1 is the coil two ends of low frequency reception antenna 2.Direction of winding from figure as can be known, top is opposite with the direction of winding of bottom, hence one can see that, upper coil and lower coil are anti-phase to the interference of ultra-high frequency antenna 3, upper and lower coil is set symmetrical mutually, and two ultra-high frequency antennas 3 are separately positioned in the 2-2 of first and second portion 2-3 of coil of low frequency reception antenna 2, the interference with respect to ultra-high frequency antenna 3 just in time disappears mutually with lower coil to go up coil, is placed in the problem that can interfere with each other in same passage thereby solved ultra-high frequency antenna 3 with low-frequency antenna.
Take above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this utility model technological thought, carry out various change and modification fully.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to the claim scope.
Claims (2)
1. electronic label burglary checkout gear, it is characterized in that: comprise low-frequency antenna and ultra-high frequency antenna (3), described low-frequency antenna comprises low frequencies antenna (1) and low frequency reception antenna (2); The coil of described low frequency reception antenna (2) is comprised of the first (2-2) and the second portion (2-3) that arrange axisymmetricly in same plane, and the coil turn of described first (2-2) and second portion (2-3) is identical, around on the contrary; Described low frequencies antenna (1) is around in the outside of low frequency reception antenna (2) at a distance of certain interval with low frequency reception antenna (2); Described two ultra-high frequency antennas (3) are separately positioned in the first (2-2) and second portion (2-3) of coil of low frequency reception antenna (2).
2. electronic label burglary checkout gear as claimed in claim 1 is characterized in that: described two ultra-high frequency antennas (3) are symmetrical in the symmetry axis of low frequency reception antenna (2) relative to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220663000 CN202940324U (en) | 2012-12-05 | 2012-12-05 | Electronic tag anti-theft detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220663000 CN202940324U (en) | 2012-12-05 | 2012-12-05 | Electronic tag anti-theft detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940324U true CN202940324U (en) | 2013-05-15 |
Family
ID=48324547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220663000 Withdrawn - After Issue CN202940324U (en) | 2012-12-05 | 2012-12-05 | Electronic tag anti-theft detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000990A (en) * | 2012-12-05 | 2013-03-27 | 常州市科晶电子有限公司 | Anti-theft detection device for electronic tags |
-
2012
- 2012-12-05 CN CN 201220663000 patent/CN202940324U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000990A (en) * | 2012-12-05 | 2013-03-27 | 常州市科晶电子有限公司 | Anti-theft detection device for electronic tags |
| CN103000990B (en) * | 2012-12-05 | 2015-02-25 | 常州市科晶电子有限公司 | Anti-theft detection device for electronic tags |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130515 Effective date of abandoning: 20150225 |
|
| RGAV | Abandon patent right to avoid regrant |