CN201408465Y - Decoder for anti-theft label - Google Patents
Decoder for anti-theft label Download PDFInfo
- Publication number
- CN201408465Y CN201408465Y CN2009201181723U CN200920118172U CN201408465Y CN 201408465 Y CN201408465 Y CN 201408465Y CN 2009201181723 U CN2009201181723 U CN 2009201181723U CN 200920118172 U CN200920118172 U CN 200920118172U CN 201408465 Y CN201408465 Y CN 201408465Y
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- signal
- demoder
- processing circuit
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Abstract
The utility model provides a decoder for an anti-theft label, which comprises an electric circuit for providing a first electrical signal; the decoder is provided with a controller and an electrical signal processing circuit, wherein the electrical signal processing circuit is provided with an electrical signal drive circuit for a second electrical signal and a third electrical signal; the electrical signal processing circuit is also provided with an decoding board and a signal receiving processing circuit; and the utility model only transmits the low-voltage signal to enable the anti-theft label to generate resonance under the normal state, and after the controller detects that the resonance signal exists, the decoder is controlled by the controller and momentarily transmits a high-voltage signal to kill the anti-theft label. Therefore, the power consumption of the decoder is greatly reduced and the interference to the outside is also reduced.
Description
Technical field
The utility model relates to the demoder of anti-theft tag.
Background technology
Anti-theft tag is used to prevent that commodity are stolen, and commodity decoded device when selling is separated, in case as anti-theft tag not decoded device separate and illegally taken away, anti-theft tag will excite the burglary protection system for commodities warning.Present anti-theft tag has the branch of soft label and hard label, and soft label is a kind of disposable label, and the high voltage signal institute of the corresponding frequencies that its decoded device is launched " kills " and lost efficacy, and this high voltage is being 50 to 300 volts at present.Present demoder no matter whether separate code requirement, is launched described high-voltage signal all the time, not only wastes energy, and can produce the electric signal interference to surrounding environment.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of demoder of anti-theft tag, and it can realize the low interference of low energy consumption at above-mentioned defective.For this reason, the utility model is by the following technical solutions: it comprises the circuit that first electric signal is provided, the frequency of described first electric signal is to make anti-theft tag produce the frequency of resonance, described demoder is provided with controller and electric signal processing circuit, and described electric signal processing circuit is provided with to be accepted described first electric signal and can export by controller control to be used to the electric signal driving circuit that makes second electric signal of anti-theft tag generation resonance wave and be used to make the 3rd electric signal of anti-theft tag inefficacy; Described electric signal processing circuit also is provided with decoding deck and signal receiving processing circuit, and described decoding deck acceptance and emission make the electric signal of anti-theft tag generation resonance wave, make the electric signal of anti-theft tag inefficacy to signal receiving processing circuit feedback signal, acceptance and emission; Described controller connects the signal receiving processing circuit, and the output signal of signal receiving processing circuit is judged.Owing to adopt the technical solution of the utility model, the utility model is only launched the low-voltage signal that makes anti-theft tag produce resonance under normal conditions, after controller detects resonance signal, control by controller again, moment emission high-voltage signal " kills " anti-theft tag, thereby can reduce the power consumption of demoder greatly, reduce interference to external world.
Description of drawings
Fig. 1 is the circuit theory diagrams of embodiment 1 provided by the utility model.
Fig. 2 is the circuit theory diagrams of embodiment 2 provided by the utility model.
Embodiment
Embodiment 1
With reference to accompanying drawing.Demoder provided by the utility model adopts civil power as power supply, be converted to 12V and the output of 5V two-way electricity through power circuit, demoder comprises circuit and the controller that first electric signal is provided, the frequency of described first electric signal is to make anti-theft tag produce the frequency of resonance, and described controller can be a single-chip microcomputer.The clock circuit that provides the circuit of first electric signal can utilize controller, crystal oscillator for example, this clock circuit frequency is 16.4MHz, but according to the application difference, is not limited to 16.4MHz.Provide the circuit of first electric signal to comprise the logic processing circuit that is connected with the clock circuit of controller, described logic processing circuit is controlled by the controller, the clock signal of input is carried out 1/2 frequency division, output signal behind the frequency division is first electric signal, in the present embodiment, the frequency of first electric signal is 8.2MHz.
Described demoder also is provided with electric signal processing circuit, and described electric signal processing circuit is provided with to be accepted described first electric signal and can export by controller control to be used to the electric signal driving circuit that makes second electric signal of anti-theft tag generation resonance wave and be used to make the 3rd electric signal of anti-theft tag inefficacy.Described electric signal driving circuit is provided with the power drive impedance inverter circuit, described power drive impedance inverter circuit is by being finished the transmission of impedance matching, conversion and power by the transmission transformer of diplopore magnetic bead coiled, described power drive impedance inverter circuit is connected with the output terminal of the circuit of first electric signal; Described electric signal driving circuit also is provided with the modulation circuit that boosts, the described modulation circuit that boosts is controlled by the controller and is connected the input end of power drive impedance inverter circuit, the described modulation circuit that boosts adopts the pulse width modulation type modulation circuit that boosts, be the PWM modulation circuit that boosts, but be not limited to the booster circuit that the PWM mode realizes.Described electric signal processing circuit also is provided with decoding deck 400 and signal receiving processing circuit 600, be provided with the modulating and demodulating signal circuit in the described signal receiving processing circuit 600, described decoding deck 400 acceptance and emission make the electric signal of anti-theft tag generation resonance wave, make the electric signal of anti-theft tag inefficacy to modulating and demodulating signal circuit feedback signal, acceptance and emission; Described controller connects signal receiving processing circuit 600, and the output signal of modulating and demodulating signal circuit is judged.Described demoder the output terminal of power drive impedance inverter circuit be provided with second electric signal and the 3rd electric signal are carried out the wave shaping and the output of wave shaping can amount control circuit.Described demoder is provided with at the output terminal of modulating and demodulating signal circuit the modulating and demodulating signal circuit output signal is carried out the amplifying signal amplifying circuit.
During use, power drive impedance inverter circuit and PWM boost, and modulation circuit is collaborative to carry out the energy amplification to first electric signal, make second electric signal about electric signal driving circuit output 20V, but be not limited to 20V, can export to decoding deck behind the amount control circuit through wave shaping and output, decoding deck is launched this signal, and the feedback signal that is produced by resonance is to the modulating and demodulating signal circuit, the demodulation of modulating and demodulating signal circuit, signal amplification circuit amplifies, compare by controller, judge whether the resonance wave of anti-theft tag, when not detecting the resonance wave of anti-theft tag, demoder is kept this low-power consumption duty all the time, in case anti-theft tag is arranged through decoding deck, at this moment, decoding deck produces resonance to the low-voltage signal of anti-theft tag emission, the resonance wave signal that contains anti-theft tag in the feedback signal of decoding deck, by the modulating and demodulating signal circuit all the other clutters are filtered, amplify and after controller compares judgement through signal amplification circuit, the control PWM modulation circuit that boosts boosts, make the electric signal driving circuit export the 3rd electric signal of 60V, but be not limited to 60V, can export to decoding deck by amount control circuit through wave shaping and output, decoding deck is launched this signal, " kill " anti-theft tag, make its inefficacy.
In force, each circuit all can adopt corresponding function circuit commonly used at present more than.Described electric signal processing circuit is provided with the clamped circuit 300 and the bandwidth filter circuit 500 of feedback signal between decoding deck 400 and modulating and demodulating signal circuit.Described demoder also is provided with sound-producing device 800 by the control of described controller or/and light-emitting device 700.
Described demoder can only be established an above-mentioned electric signal processing circuit.Described demoder also can be provided with a plurality of above-mentioned electric signal processing circuits, can use for a plurality of users, and present embodiment is the demoder that 2 electric signal processing circuits are set.Described a plurality of electric signal processing circuit can the public modulation circuit that boosts.Simultaneously, described logic processing circuit has a plurality of first electric signal output channels that are switched more than 2 or 2, is controlled by the controller, and finishes switching in turn of these output channels, exports first electric signal in turn.
Embodiment 2
With reference to accompanying drawing 2, in the present embodiment, provide in the circuit of first electric signal and be provided with frequency dividing circuit, it connects the clock circuit of controller, the control of controlled device, with the 16.4MHz frequency division of clock circuit be 8.2MHz as first electric signal, provide the output terminal of the circuit of first electric signal to be provided with logic change-over switch 200 by controller control, described logic change-over switch is provided with a plurality of output terminals that are switched more than 2 or 2, and described output terminal is connected with described electric signal processing circuit respectively.In the present embodiment, described electric signal processing circuit is provided with separately the PWM modulation circuit that boosts respectively.
Claims (9)
1. the demoder of an anti-theft tag, comprise the circuit that first electric signal is provided, the frequency that it is characterized in that described first electric signal is to make anti-theft tag produce the frequency of resonance, described demoder is provided with controller and electric signal processing circuit, and described electric signal processing circuit is provided with to be accepted described first electric signal and can export by controller control to be used to the electric signal driving circuit that makes second electric signal of anti-theft tag generation resonance wave and be used to make the 3rd electric signal of anti-theft tag inefficacy; Described electric signal processing circuit also is provided with decoding deck and signal receiving processing circuit, and described decoding deck acceptance and emission make the electric signal of anti-theft tag generation resonance wave, make the electric signal of anti-theft tag inefficacy to signal receiving processing circuit feedback signal, acceptance and emission; Described controller connects the signal receiving processing circuit, and the output signal of signal receiving processing circuit is judged.
2. the demoder of a kind of anti-theft tag as claimed in claim 1, it is characterized in that described demoder is provided with the logic change-over switch of being controlled by controller at the output terminal of the circuit that first electric signal is provided, described logic change-over switch is provided with a plurality of output terminals that are switched more than 2 or 2, and described output terminal is connected with described electric signal processing circuit respectively.
3. the demoder of a kind of anti-theft tag as claimed in claim 1, it is characterized in that the described circuit of first electric signal that provides is provided with logic processing circuit, described logic processing circuit has a plurality of first electric signal output channels that are switched more than 2 or 2, the described circuit of first electric signal that provides is controlled by the controller, the clock signal of input is carried out frequency division, export first electric signal.
4. the demoder of a kind of anti-theft tag as claimed in claim 1, it is characterized in that described electric signal driving circuit is provided with the power drive impedance inverter circuit, described power drive impedance inverter circuit is connected with the output terminal of the circuit that first electric signal is provided, described electric signal driving circuit also is provided with the modulation circuit that boosts, and the described modulation circuit that boosts is controlled by the controller and is connected the input end of power drive impedance inverter circuit.
5. the demoder of a kind of anti-theft tag as claimed in claim 4 is characterized in that the described modulation circuit that boosts is the pulse width modulation type modulation circuit (PWM) that boosts.
6. as the demoder of claim 1,2,3,4 or 5 described a kind of anti-theft tags, it is characterized in that described demoder is provided with second electric signal and the 3rd electric signal carries out wave shaping and output can amount control circuit at the output terminal of electric signal driving circuit.
7. as the demoder of claim 1,2,3,4 or 5 described a kind of anti-theft tags, it is characterized in that described signal receiving processing circuit is provided with the modulating and demodulating signal circuit.
8. the demoder of a kind of anti-theft tag as claimed in claim 7, it is characterized in that described demoder is provided with at the output terminal of modulating and demodulating signal circuit carries out the amplifying signal amplifying circuit to the modulating and demodulating signal circuit output signal.
9. as the demoder of claim 1,2,3,4 or 5 described a kind of anti-theft tags, it is characterized in that it also is provided with sound-producing device by described controller control or/and light-emitting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201181723U CN201408465Y (en) | 2009-04-21 | 2009-04-21 | Decoder for anti-theft label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201181723U CN201408465Y (en) | 2009-04-21 | 2009-04-21 | Decoder for anti-theft label |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201408465Y true CN201408465Y (en) | 2010-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201181723U Expired - Fee Related CN201408465Y (en) | 2009-04-21 | 2009-04-21 | Decoder for anti-theft label |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201408465Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108470415A (en) * | 2018-03-12 | 2018-08-31 | 宁波讯强电子科技有限公司 | A kind of frame-type acoustic magnetic anti-theft label decoder and method |
-
2009
- 2009-04-21 CN CN2009201181723U patent/CN201408465Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108470415A (en) * | 2018-03-12 | 2018-08-31 | 宁波讯强电子科技有限公司 | A kind of frame-type acoustic magnetic anti-theft label decoder and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING SICHUANG CHAOXUN TECHNOLOGY DEVELOPMENT CO Free format text: FORMER OWNER: HANGZHOU CENTURY PLASTIC + ELECTRONIC CO., LTD. Effective date: 20150713 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150713 Address after: 100097 Beijing, far from the city of Haidian District Road No. 20 Pengan Century Towers F 6D Patentee after: Beijing Sichuang puriton Technology Development Co. Ltd. Address before: Hangzhou City, Zhejiang province 310015 Shangcheng District Moganshan Road No. 1418-25 city science and Technology Park Patentee before: Hangzhou Century Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20180421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |