CN2862213Y - Dactivate,activate and detecting device for electromagnetic wave anti-theft label - Google Patents
Dactivate,activate and detecting device for electromagnetic wave anti-theft label Download PDFInfo
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- CN2862213Y CN2862213Y CN 200520067131 CN200520067131U CN2862213Y CN 2862213 Y CN2862213 Y CN 2862213Y CN 200520067131 CN200520067131 CN 200520067131 CN 200520067131 U CN200520067131 U CN 200520067131U CN 2862213 Y CN2862213 Y CN 2862213Y
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- deactivation
- activation
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- electromagnetic wave
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Abstract
A deactivation, activation and detection device for electromagnetic anti-theft label includes control box and power adapter. The control box includes a bottom shell and a surface shell and is provided with a magnetizing/demagnetizing coil, a sending antenna, a receiving antenna and a control circuit therein. The sending and receiving antennae are mounted in the interior of said surface shell. The magnetizing/demagnetizing coil is installed in the center of said bottom shell. A plurality of mode selection switches are installed on the control box and connected with the input of the control circuit by the receiving antenna. The sending antenna and magnetizing/demagnetizing coil are connected with the output of the control circuit. The device adopts MCU and various switch control to improve the reliability, and is adapted for both manual selection of mode (by using switch) and automatic selection of mode (by using light control switch), enabling the operation more flexible and more convenient. The circuit is configured by modular design and is protected from overheat.
Description
Technical field
The utility model relates to deactivation, activation and the pick-up unit of Electronic Article Surveillance, particularly a kind of deactivation, activation and pick-up unit that is used for the electromagnetic wave anti-theft tag.
Background technology
Electronic article surveillance (EAS) system is a kind of radio-frequency (RF) identification (RFID) device that needs control article discrepancy doorway that is arranged on.The typical applications of this technology is places such as shop, library, data center, when uncommitted people when these places are illegally taken article away, the EAS system can give a warning.When using the EAS technology, at first on article, adhere to eas tag, normally to be bought or during legal shifting out, made the eas tag inactivation by certain device when article in clearing place, article just can be taken away.When the article process was equipped with the doorway of EAS system, the EAS device is the activity of tags detected automatically, found that activity label E AS system can give a warning.The EAS The Application of Technology can effectively prevent the stolen of article, no matter be the commodity of big part, and still very little article.Use the EAS technology, article need not be locked in the glass case again, can allow client freely watch, check commodity, and very important realistic meaning is arranged this today in free increased popularity.Typical EAS system generally is made up of three parts, attached to the electronic tag on the commodity, electronic sensor; The electronic tag inactivating device is so that authorize commodity normally to come in and go out; Monitor causes the monitored space in certain zone in outlet.
The principle of work of electronic article surveillance (EAS) system is: transmitter and receiver generally are installed in the gateway in retail shop, library, transmitter sends signal, be received by the receiver reduction, between transmitter and receiver, form certain monitored space, when the label with specific characteristic enters this zone, the signal that can send transmitter produces certain interference, this undesired signal also can be received by the receiver, pass through the analysis and judgement of microprocessor again, will control the warning of ringing of warning horn.To signal interference principle difference, EAS can be divided into the numerous species type, i.e. radio system, electromagnetic wave system, microwave system, frequency division system, intelligent system harmony magnetic system according to signal difference that transmitter sent and label.
Electromagnetic wave system (Electromagnetic System) adopts electromagnetic wave as detection signal, alarm principle is the mode that detects harmonic wave, electromagnetic wave system produces an intensity more weak alternating magnetic field relatively at detection zone, electromagnetic wave (EM) anti-theft tag internal core is an amorphous composite metal magnetic stripe, when label enters the detection zone of electromagnetic wave system (EM), alternating magnetic field makes label material by periodic magnetic reversal, it is the harmonic wave of safety feature fundamental frequency that magnetic stripe produces frequency, and these harmonic waves are received and handle by system and will report to the police.This system applies environment many in the library, bookstore, hotel, supermarket etc., be characterized in that label is tiny, can be attached on the metal covering or be put in the books, and can use repeatedly by deactivation, activation.
Being surrounded by one around the amorphous composite metal magnetic stripe can slight magnetized metal shell, when active label is arranged in single polarity high-intensity magnetic field, metal shell is magnetized, can be when label enters weak alternating magnetic field more again by remagnetization, can not produce harmonic wave, thereby can not be detected by system, electromagnetic wave (EM) anti-theft tag is deactivated.When deactivated label was arranged in strong alternating magnetic field, metal shell was by demagnetization, and label can be produced harmonic wave by remagnetization when entering weak alternating magnetic field again, thereby can be detected by system, and electromagnetic wave (EM) anti-theft tag is activated.
Label deactivation and activation equipment complex on the market is simple in structure mostly at present, can not effectively solve the internal electromagnetic interference problem, thereby reliability is low; Because adopt single pushbutton switch control, the conversion of state can only be operated dumb by manually finishing.The defencive function imperfection of these equipment can not effectively solve the big problem of equipment heating amount.
Summary of the invention
The purpose of this utility model provides the deactivation that is used for the electromagnetic wave anti-theft tag, activation and the pick-up unit that a kind of flexible operation mode is convenient, intelligent, reliability is high, this device can make the deactivation of electromagnetic wave anti-theft tag, activates and label is detected, and can change the duty of device with multiple mode.
The utility model is used for the deactivation of electromagnetic wave anti-theft tag, activation and pick-up unit comprise control enclosure and power supply adaptor, described control enclosure comprises lower casing and face-piece, install in the control enclosure and magnetize/anti-magnetized coil, emitting antenna, receiving antenna and control circuit, emitting antenna and receiving antenna are positioned at the inboard place of described face-piece, magnetize/anti-magnetized coil is installed on described lower casing middle part, some mode selection switches are installed on the described control enclosure, this selector switch and receiving antenna are connected in the control circuit respective input, and described emitting antenna and magnetizing/anti-magnetized coil is connected in the corresponding output end of control circuit.
Described some mode selection switches comprise a detector switch and a deactivation/activation change-over switch, this detector switch and deactivation/activation change-over switch is connected to the respective input of MCU in the control circuit, when described detector switch is connected, device works in detected state, magnetize/anti-magnetized coil do not work, when this detector switch ended, device worked in activation or deactivated state, magnetizes/anti-magnetized coil work; Described change-over switch is used for control and magnetizes/and anti-magnetized coil works in active state or deactivated state.
Originally the deactivation, activation and the pick-up unit that are used for the electromagnetic wave anti-theft tag are installed activation light-operated switch and deactivation light-operated switch respectively in both sides, control enclosure top, when deactivation/activation change-over switch is at random shelves, by described activation light-operated switch and the control of deactivation light-operated switch magnetize/anti-magnetized coil works in active state or deactivated state.
Compared with prior art, this device adopts MCU and the control of multiple on-off mode, reliability height.It both can manually realize conversion of operation state by change-over switch, also can select duty automatically by light-operated switch, and multiple switch control mode makes operation have more dirigibility, and is more convenient.
Multiple functional circuit plate is arranged in its control enclosure, realize different functions respectively, because the modular design of circuit, and rational structure collocation between the module, make the heating of this device reduce greatly, efficiently solve heat dissipation problem.
Be provided with defencive function, if unit temp is too high or light-operated switch was in the dark situation for a long time, this device will enter holding state automatically, efficiently solve the problems of excessive heat that continuous working brings, and equipment is protected.
Description of drawings
Fig. 1 is the structural representation of the utility model exemplary embodiments;
Fig. 2 is its inner structure synoptic diagram;
Fig. 3 is its schematic block circuit diagram;
Fig. 4 is its software flow pattern.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be specified.
As Figure 1-3, the deactivation, activation and the pick-up unit that originally are used for the electromagnetic wave anti-theft tag can work in three kinds of different states, that is: make the activation of electromagnetic wave anti-theft tag, make the deactivation of electromagnetic wave anti-theft tag, reach the electromagnetic wave anti-theft tag is detected.It comprises control enclosure and power supply adaptor, power supply adaptor can be selected different voltage standards, promptly satisfy the 230V and the 115V that satisfies the U.S. and Nippon Standard of European standard, described control enclosure comprises lower casing 105 and face-piece 102, face-piece 102 upper surfaces are installed plate washer 101, install in the control enclosure and magnetize/anti-magnetized coil 107, emitting antenna, receiving antenna and control circuit, emitting antenna and receiving antenna are installed on described face-piece 102 inboard places by antenna holder 104, magnetize/anti-magnetized coil 107 is installed on described lower casing 105 middle parts, the side of lower casing 105 is provided with some louvres 110, some mode selection switches (not marking among the figure) are installed on the described control enclosure, this selector switch and receiving antenna are connected in the control circuit respective input, and described emitting antenna and magnetizing/anti-magnetized coil 107 is connected in the corresponding output end of control circuit.109 is the thermal stabilization shield plate among Fig. 2.The central authorities of control enclosure are the best effort districts of this deactivation, activation and pick-up unit, and the workspace is meant the effective range of electromagnetic field, and label will be put in just can finish activation or deactivation in the workspace, and this matching requirements tag distances anti-magnetized coil is less than 5cm.
Some mode selection switches comprise: a detector switch 219, and when this detector switch 219 was connected, device worked in detected state, magnetize/anti-magnetized coil 107 do not work, when this detector switch 219 ended, device worked in activation or deactivated state, magnetized/anti-magnetized coil 107 work; A deactivation/activation change-over switch 220, this change-over switch 220 be used for control and magnetize/and anti-magnetized coil 107 works in active state or deactivated state.
Control circuit comprises MCU 206, testing circuit, activation/deactivation circuit and warning circuit 207; Described testing circuit comprises the signal transmission channel that is connected in sequence by low-pass filter 204, isolated amplifier 203, power amplifier 202, and the signal receiving cable of forming by Hi-pass filter 209 and comparer 210, signal transmission channel input termination MCU 206 output terminals, antenna 201 is penetrated in its output terminal sending and receiving, signal receiving cable input termination receiving antenna 208, its output termination MCU 206 input ends; Described activation/deactivation circuit comprises that activation light-operated switch 211, deactivation light-operated switch 213 and control magnetizes/relay 216 of anti-magnetized coil 107 work, activation light-operated switch 211 and deactivate light-operated switch 213 and be connected with MCU 206 respective inputs with 214 by comparer 212 respectively.
Activation light-operated switch 211 and deactivation light-operated switch 213 are installed on both sides, control enclosure top respectively, described deactivation/activation change-over switch 220 is a toggle switch, this toggle switch comprises label activation shelves, label deactivation shelves and shelves at random, when toggle switch 220 is at random shelves, by described activation light-operated switch 211 and 213 controls of deactivation light-operated switch magnetize/anti-magnetized coil 107 works in active state or deactivated state, concrete control principle is: when label along the plate washer 101 of face-piece 102 upper surfaces when a side of device is shifted to central workspace through activation light-operated switch 211, activation light-operated switch 211 is triggered, by MCU control magnetize/anti-magnetized coil 107 works in the state of magnetizing, when the opposite side of label along the plate washer 101 of face-piece 102 upper surfaces from device shifted to central workspace through deactivation light-operated switch 213, deactivation light-operated switch 213 is triggered, by MCU control magnetize/anti-magnetized coil 107 works in erasing state.After light-operated switch triggered and starts mobilizing function (function promptly magnetizes) or deactivation function (being the demagnetization function), automatic time delay 3s did not enter holding state, satisfies the needs of continuous working.
Activation light-operated switch 211 and deactivation light-operated switch 213 can adopt phototriode or photodiode.
This device also comprises POS machine interface 217, and this interface is connected with MCU 206 by optocoupler 218.This device is connected with outside POS machine by its POS machine interface 217, after POS machine (electronic cash register) gathering, exports a pulse signal and switches to the label deactivated state by POS machine interface 217 these devices of control, so that the label on the commodity is deactivated.
Described MCU 206 has anti-error recognition function, when two long-time continuous beams of light of photosensitive tube dark excessively, or when having object to block fully to magnetize photosensitive mouthful, when making activation photosensitive tube 211 or deactivation photosensitive tube 213 ON time surpass setting value, MCU 206 sends alerting signal, enters holding state with timed unit.
Described control circuit is arranged on main PCB plate 106, power supply pcb board 108, lamp pcb board (not marking among the figure) and the hummer pcb board 103, realize different functions respectively, because rational structure collocation between the modular design of circuit and the module, make the heating of this device reduce greatly, add in the side of the lower casing of control enclosure some louvres 110 are set, efficiently solve heat dissipation problem.Multicolor luminous LED is installed on the lamp pcb board, the different conditions of this device is distinguished demonstration, on emitting led, polymethyl methacrylate glass is set, make divergence of beam, increased visible angle.
Also comprise overheating protection circuit, can adopt conventional overheating protection circuit, make to enter holding state when unit temp is too high automatically.
With reference to Fig. 3,4, the course of work of deactivation, activation and pick-up unit that originally is used for the electromagnetic wave anti-theft tag is as follows:
1, when detector switch 219 is in the state of ON, this device is in the label detected state, can detect label.The square-wave signal that is produced by MCU 206 enters low-pass filter 204 filtering, obtains sine wave, amplifies through isolated amplifier 203 and power amplifier 202, launches by emitting antenna 201.After label entered surveyed area, signal affacted on the label, made label produce the N subharmonic.Receiving antenna 208 receives label harmonic response signal, filters itself signal and the noise signal that produces of environment by Hi-pass filter 209, and the signal of label harmonic response is amplified.Then signal is sent into comparer 210, send into MCU 206 by the voltage threshold that comparer is set, the judgement of voltage is reduced the rate of false alarm of this equipment by MCU, be processed into impulse form through the signal behind the comparer, label signal is strong more, pulse number in the certain hour is many more, and whether MCU reports to the police by the number decision of recording impulse in a period of time.
2, when detector switch 219 is in the state of OFF, can activates or deactivate label (promptly magnetizing or demagnetization).Label is activated still deactivation to be controlled and is selected by a pair of photodiode on the work top (activation photosensitive tube 211 or deactivation photosensitive tube 213), concrete grammar is: will deactivate/activate change-over switch 220 and switch to shelves at random, when object blocks activation photosensitive tube 211 fully, it is big that the resistance of this photodiode becomes, with resistance that photodiode is connected in series mutually on the voltage obtained reduce, when this voltage is lower than the reference voltage of comparer 212 another input ends, the level state of comparer 212 outputs changes, MCU monitors the variation of this level, send the label activation signals, connection is magnetized/anti-magnetized coil 107, and make in the coil 107 by bidirectional current, thereby the high-intensity magnetic field of polarization alternation makes the label activation, finish this process after, signal continues 3s, MCU pilot relay 216 disconnects, and magnetizes/anti-magnetized coil 107 outages, gets back to master routine, enter holding state, up to the generation that triggers next time.
Equally, when object blocks deactivation photosensitive tube 213 fully, another comparer 214 output level state variation, MCU control is connected and is magnetized/anti-magnetized coil 107, and make in the coil 107 by unidirectional current, produce the high-intensity magnetic field of single polarity, label is deactivated.After finishing this process, signal continues 3s, and MCU pilot relay 216 disconnects, and magnetizes/anti-magnetized coil 107 outages, gets back to master routine, enters holding state, up to the generation that triggers next time.
Also can select still activation of deactivation by deactivation/activation change-over switch 220, when change-over switch 220 is switched to label activation shelves, this device is in the label active state, magnetize/high-intensity magnetic field of anti-magnetized coil 107 polarization alternations, can activate label, when change-over switch 220 was switched to label deactivation shelves, this device was in the label deactivated state, magnetize/anti-magnetized coil 107 produces the high-intensity magnetic field of single polarity, can deactivate label.
In the process of label activation or deactivation, having two kinds of situations to need MCU to carry out intellectuality judges: a, in a label activation or deactivation process, there is object continuously to trigger same photosensitive mouthful (action of blocking and decontrol photosensitive mouthful alternately constantly takes place), MCU judges that this device is in fast activating or deactivated state, and control the closing coil continuous working always of corresponding relay, the magnetic field continuous and effective till not triggering, just can enter holding state in activation or deactivation process.If b has object to block always that photosensitive mouth is not decontroled or background light when quite dark, this moment, MCU judged that this device is in wrong user mode, by the hummer sounding alarm, enter holding state then, until blocking that photosensitive mouthful object is removed or background light increases to certain intensity and just understands operate as normal.
Claims (9)
1, be used for the deactivation of electromagnetic wave anti-theft tag, activation and pick-up unit, comprise control enclosure and power supply adaptor, it is characterized in that: described control enclosure comprises lower casing and face-piece, install in the control enclosure and magnetize/anti-magnetized coil, emitting antenna, receiving antenna and control circuit, emitting antenna and receiving antenna are positioned at the inboard place of described face-piece, magnetize/anti-magnetized coil is installed on described lower casing middle part, some mode selection switches are installed on the described control enclosure, this selector switch and receiving antenna are connected in the control circuit respective input, and described emitting antenna and magnetizing/anti-magnetized coil is connected in the corresponding output end of control circuit.
2, deactivation, activation and the pick-up unit that is used for the electromagnetic wave anti-theft tag according to claim 1, it is characterized in that: described some mode selection switches comprise a detector switch and a deactivation/activation change-over switch, and this detector switch and deactivation/activation change-over switch is connected to the respective input of MCU in the control circuit.
3, deactivation, activation and the pick-up unit that is used for the electromagnetic wave anti-theft tag according to claim 2, it is characterized in that: described control circuit comprises MCU, testing circuit, activation/deactivation circuit and warning circuit; Described testing circuit comprises the signal transmission channel that is connected in sequence by low-pass filter, isolated amplifier, power amplifier, and the signal receiving cable of forming by Hi-pass filter and comparer, signal transmission channel input termination MCU output terminal, antenna is penetrated in its output terminal sending and receiving, signal receiving cable input termination receiving antenna, its output termination MCU input end; Described activation/deactivation circuit comprises that activation light-operated switch, deactivation light-operated switch and control magnetizes/relay of anti-magnetized coil work, activation light-operated switch and deactivate light-operated switch and be connected with the MCU input end by comparer respectively.
4, deactivation, activation and the pick-up unit that is used for the electromagnetic wave anti-theft tag according to claim 3, it is characterized in that: described activation light-operated switch and deactivation light-operated switch are installed on both sides, control enclosure top respectively, described deactivation/activation change-over switch is a toggle switch, this toggle switch comprises label activation shelves, label deactivation shelves and shelves at random, when toggle switch is at random shelves, by described activation light-operated switch and the control of deactivation light-operated switch magnetize/anti-magnetized coil works in active state or deactivated state.
5, deactivation, activation and the pick-up unit that is used for the electromagnetic wave anti-theft tag according to claim 3 is characterized in that: described activation light-operated switch and deactivation light-operated switch are phototriode or photodiode.
6, deactivation, activation and the pick-up unit that is used for the electromagnetic wave anti-theft tag according to claim 3, it is characterized in that: also comprise POS machine interface, this interface is connected with MCU.
7, deactivation, activation and the pick-up unit that is used for the electromagnetic wave anti-theft tag according to claim 1, it is characterized in that: described control circuit is arranged on main PCB plate, power supply pcb board, lamp pcb board and the hummer pcb board.
8, deactivation, activation and the pick-up unit that is used for the electromagnetic wave anti-theft tag according to claim 1 is characterized in that: also comprise overheating protection circuit.
9, deactivation, activation and the pick-up unit that is used for the electromagnetic wave anti-theft tag according to claim 1, it is characterized in that: the side of the lower casing of described control enclosure is provided with some louvres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520067131 CN2862213Y (en) | 2005-11-04 | 2005-11-04 | Dactivate,activate and detecting device for electromagnetic wave anti-theft label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520067131 CN2862213Y (en) | 2005-11-04 | 2005-11-04 | Dactivate,activate and detecting device for electromagnetic wave anti-theft label |
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| Publication Number | Publication Date |
|---|---|
| CN2862213Y true CN2862213Y (en) | 2007-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520067131 Expired - Fee Related CN2862213Y (en) | 2005-11-04 | 2005-11-04 | Dactivate,activate and detecting device for electromagnetic wave anti-theft label |
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| CN (1) | CN2862213Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393595B (en) * | 2007-09-19 | 2010-04-21 | 深圳蓉华电子有限公司 | Electronic label detecting method for EAS |
| CN106652294A (en) * | 2016-12-22 | 2017-05-10 | 思创医惠科技股份有限公司 | Testing device for antitheft system deactivator |
| CN106813315A (en) * | 2016-02-26 | 2017-06-09 | Lg电子株式会社 | Air purifier |
| CN107845850A (en) * | 2017-11-13 | 2018-03-27 | 戴承萍 | Integrated cavity band-pass filter and low-pass filter component |
-
2005
- 2005-11-04 CN CN 200520067131 patent/CN2862213Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393595B (en) * | 2007-09-19 | 2010-04-21 | 深圳蓉华电子有限公司 | Electronic label detecting method for EAS |
| CN106813315A (en) * | 2016-02-26 | 2017-06-09 | Lg电子株式会社 | Air purifier |
| CN106813315B (en) * | 2016-02-26 | 2020-01-07 | Lg电子株式会社 | Air purifier |
| CN106652294A (en) * | 2016-12-22 | 2017-05-10 | 思创医惠科技股份有限公司 | Testing device for antitheft system deactivator |
| CN107845850A (en) * | 2017-11-13 | 2018-03-27 | 戴承萍 | Integrated cavity band-pass filter and low-pass filter component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070124 Termination date: 20111104 |