CN205645429U - Sound magnetism security label deactivates and detection device - Google Patents
Sound magnetism security label deactivates and detection device Download PDFInfo
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- CN205645429U CN205645429U CN201620257295.5U CN201620257295U CN205645429U CN 205645429 U CN205645429 U CN 205645429U CN 201620257295 U CN201620257295 U CN 201620257295U CN 205645429 U CN205645429 U CN 205645429U
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Abstract
The utility model provides a sound magnetism security label deactivates and detection device, includes control box and magnetic eraser, establish the master control circuit PCB board in the control box, master control circuit includes transmitting circuit, receiving circuit and demagnetization circuit, the magnetic eraser include the timesharing as emit antenna, receiving antenna and anti magnetized coil's coil demagnetization electric capacity and casing, this casing comprises epitheca and inferior valve, louvre, epitheca mid -mounting are seted up to the side and the bottom surface of inferior valve coil and electric capacity set up time delay receive switch and time delay field discharge switch on the epitheca, the winding connection in the output of transmitting circuit, what the coil was received comes the reflected signal of selfdemagnetization label to be connected to through this time delay receive switch receiving circuit's input, the coil through this the time delay field discharge switch with demagnetization circuit connection. This device adopts MCU control, and the reliability is high, stability is good. The circuit adopts the modularized design to protect function is set up, over heating issue can be prevented.
Description
Technical field
This utility model relates to deactivation and the detection device of commercial anti-theft label, the deactivation of a kind of acoustic magnetic anti-theft label and detection device.
Background technology
Electronic article surveillance (EAS) system is a kind of RF identification (RFID) device being arranged on and needing to control article discrepancy doorway.The typical applications of this technology is the places such as shop, library, data center, and when uncommitted people illegally takes article away from these places, EAS system can give a warning.Apply EAS technology time, first on article adhere to eas tag, when article normally bought or legal removal time, make eas tag inactivate by certain device at clearing, article just can be taken away.Article are through the doorway equipped with EAS system, and EAS device can detect the activeness of label automatically, and when finding activeness label, EAS system can give a warning.The application of EAS technology can effectively prevent the stolen of article, is no matter the commodity of big part, the least article.Application EAS technology, article need not be locked in glass case again, and client can be allowed freely to watch, check commodity, and this has very important realistic meaning in today of free increased popularity.Typical EAS system is typically made up of three parts, the electronic tag being attached on commodity, electronic sensor；Electronic tag inactivating device, in order to authorize commodity normally to come in and go out；Monitor, causes the supervision space of certain area in outlet.
The operation principle of electronic article surveillance (EAS) system is: emitter and receptor are typically mounted at the gateway of retail shop, library, emitter sends signal, it is received by the receiver reduction, form certain supervision space between transmitter and receiver, when the label with specific characteristic enters this region, the signal that can send emitter produces certain interference, and this interference signal also can be received by the receiver, analysis through microprocessor judges again, and toot the sound that will control siren is reported to the police.The signal difference and the label that are sent according to emitter are different to signal disturbing principle, and EAS is segmented into many types, i.e. radio system, electromagnetic wave system, microwave system, frequency division system, intelligent system harmony magnetic system.
Sound magnetic system (Acoustic Magnetic, AM) is the covibration utilizing tuning fork principle to produce, it is achieved the almost operation of zero wrong report.When launching signal (alternating magnetic field) frequency and being consistent with audio magnetic label frequency of oscillation, audio magnetic label is similar to tuning fork can cause resonance, produces resonance signal (alternating magnetic field);After receptor detects the resonance signal (every 1/50 second once) of continuous 4-8 time (adjustable), reception system will send warning.This system can be widely used in general merchandise, supermarket, brand shop, video shop, grocery store, pharmacy, it is also possible at environment such as office buildings.Sound magnetic system is an important breakthrough of electronic anti-theft technology, makes EAS wrong report phenomenon be greatly improved, and it is the product of excellent performance in EAS system.Its characteristic is that antitheft verification and measurement ratio is high, rate of false alarm is low, the outlet width of not good by the shielding of metallic tin foil paper, anti-interference, protection (single cover system is the widest protect 4 meters).
Audio magnetic label is made up of small plastic box, long about 40mm, a width of 8-14mm, and thickness is that 1mm(is existing thinner).In capsule, being made up of the structure being similar to tuning fork, a kind of Hard Magnetic bonding jumper being integrally fixed on plastic casing two kinds of bonding jumpers, another kind is the soft magnetism permalloy bar of energy free vibration.Special material according to label and structure, cause it to have certain resonant frequency;After additional alternating magnetic field disappears, label still can produce damped oscillation, forms magnetic field energy and replaces translative mode with mechanical energy, produces attenuation type resonance signal, and this is a kind of sound magnetic composite signal.The operating frequency of typical case's audio magnetic label is 58KHz, and tuning fork resonance signal is similar to ultrasound wave, and therefore, capacity of resisting disturbance and penetration power are extremely strong, and this is the great advantage being different from other label.During utilizing tuning fork effect identification, the process that actually electromagnetic energy and mechanical energy are mutually changed, but, owing to the conversion efficiency of magnetosensitive device is low, need powerful transmitting power, as the representative value of minimum activation magnetic field intensity is more than 16 A/m, so the antenna detector of sound magnetic system is the hugest.
When export firm obtains American-European order, typically will anti-theft tag;Particularly American-European chain-supermarket the last 100, major part all uses 58kHz acoustic magnetic anti-theft label.On commodity, only paste AM anti-theft tag, American-European supermarket could be entered.Sound magnetic system has two kinds of anti-theft tags of soft or hard.First the soft label of sound magnetic of news U.S. money has two series of DR and EL label, and the former is made up of two vibrating reeds and a piece of substrate, and the latter is made up of a piece of vibrating reed and a piece of substrate, it is adaptable to clothing, shoes and hats, case and bag and the article of everyday use/food etc. of band packaging.Standard type sound magnetic system has higher verification and measurement ratio, close to the excellent performance of zero wrong report;Digital technology, software-driven and intellectual technology;System is integrated with bearing, the protection exit of 1.4 meters;Possesses sound and light alarm.Deperming Facility can be divided into contact and contactless two big types.Contact requires that audio magnetic label contacts with demagnetizer surface, and contactless can be label demagnetization at audio magnetic label 12-20cm.
Summary of the invention
The purpose of this utility model is to provide that a kind of flexible operation mode is convenient, reliability is high, the deactivation of the acoustic magnetic anti-theft label of good stability and detection device, and this device can make acoustic magnetic anti-theft label deactivation and detect label.
The deactivation of this utility model acoustic magnetic anti-theft label and detection device, including controlling box and demagnetizer (or demagnetization plate)；
Arranging governor circuit pcb board and transformator in described control box, governor circuit includes radiating circuit, receives circuit and degaussing circuit；
Described demagnetizer includes that timesharing is as launching antenna, reception antenna and the coil of anti-magnetized coil, demagnetization electric capacity and housing, this housing is made up of upper casing and lower casing, louvre is offered in side and the bottom surface of lower casing, described coil and demagnetization electric capacity are installed in the middle part of upper casing, upper casing side is equipped with wiring PCB, time delay is set on upper casing and receives switch and time delay field-breaking switch, described coil is connected to the outfan of described radiating circuit, the reflected signal carrying out selfdemagnetization label that described coil receives receives switch by this time delay and is connected to the input of described reception circuit, and described coil is connected with described degaussing circuit by this time delay field-breaking switch.
Wherein, described governor circuit also includes the warning circuit that MCU and MCU controls；The output of described reception circuit connects an input of MCU, and the end that controls of control end and described time delay field-breaking switch that the input of described degaussing circuit, the input of described radiating circuit, described time delay receive switch connects the corresponding output end of MCU respectively.
Described radiating circuit is made up of the power amplifier of 58KHz pulse signal wave filter and this wave filter of connection.Described reception circuit is by mixting circuit, the reception signal pre-amplifier being connected with the respective input of mixting circuit and 116KHz/2 circuit, and connects the low-pass filtering composition of mixting circuit outfan.Described degaussing circuit includes the described demagnetization electric capacity that the booster circuit being connected with MCU erasing pulse signal output part and this booster circuit outfan connect.
Described time delay receives switch, time delay field-breaking switch is electrical switch, such as reverse-blocking tetrode thyristor etc..
Described governor circuit also includes overheating protection circuit and overvoltage crowbar.
Compared with prior art, this device uses MCU to control, and reliability is high, good stability；Using a coil timesharing to use as launching antenna, reception antenna and anti-magnetized coil, structure simplifies.
It has several functions circuit board in controlling box, realizes different functions respectively, due to the modularized design of circuit, and rational structure matching between module so that the heating of this device is substantially reduced, and efficiently solves heat dissipation problem.
Being provided with security of system defencive function, if unit temp is too high, this device will efficiently solve the problems of excessive heat brought that works continuously automatically into holding state, be protected by equipment.
Accompanying drawing explanation
Fig. 1 is the demagnetizer structural representation of this utility model exemplary embodiments；
Fig. 2 is Fig. 1 demagnetizer decomposing schematic representation；
Fig. 3 is that it controls box schematic diagram；
Fig. 4 is its governor circuit theory diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is illustrated.
With reference to Fig. 1-Fig. 4, the deactivation of this acoustic magnetic anti-theft label and detection device mainly include controlling box 109 and demagnetizer.In controlling box 109, governor circuit pcb board 107 and transformator 108 etc. are set.
Described demagnetizer includes that timesharing is as launching antenna, the coil 105 demagnetization electric capacity 104 of reception antenna and anti-magnetized coil and housing, this housing is made up of upper casing 101 and lower casing 102, louvre 103 is offered in the side of lower casing 102 and bottom surface, described coil 105 and demagnetization electric capacity 104 are arranged in the middle part of upper casing 101, upper casing 101 side is equipped with wiring PCB 106, time delay is set on upper casing 101 and receives switch 1 and time delay field-breaking switch 7, described coil 105 is connected to the outfan of radiating circuit, the reflected signal carrying out selfdemagnetization label that described coil 105 receives receives switch by this time delay and is connected to receive the input of circuit, described coil 105 is connected with degaussing circuit by this time delay field-breaking switch.
Such as Fig. 4, governor circuit includes MCU, radiating circuit, reception circuit, warning circuit and degaussing circuit etc.；The output receiving circuit connects an input of MCU, and the end that controls of control end and time delay field-breaking switch 7 that the input of degaussing circuit, the input of radiating circuit, the input of warning circuit, time delay receive switch 1 connects the corresponding output end of MCU respectively.
Described radiating circuit is made up of the power amplifier 4 of 58KHz pulse signal wave filter 3 and this wave filter of connection.Described reception circuit is made up of mixting circuit 9, reception signal the pre-amplifier 7 and 116KHz/2 circuit 8 being connected with the respective input of mixting circuit 9, and the low-pass filter circuit 10 connecting mixting circuit 9 outfan.Described degaussing circuit includes that the demagnetization electric capacity 104 that the booster circuit 11 being connected with MCU erasing pulse signal output part and booster circuit 11 outfan connect, demagnetization electric capacity 104 and booster circuit 11 common port connect described coil 105 by time delay field-breaking switch 7.
The timesharing of above-mentioned coil 105 uses as launching antenna, reception antenna and anti-magnetized coil, and 58KHz pulse signal, 116KHz/2 pulse signal and erasing pulse signal are produced by MCU.Time delay receives switch 1, time delay field-breaking switch 7 is reverse-blocking tetrode thyristor.
The deactivation of this acoustic magnetic anti-theft label and the work process of detection device are as follows: after the 58KHz pulse signal device 3 after filtering filtering of the 1.6ms of MCU output, deliver to power amplifier 4 and be amplified, then by coil 105(as launching antenna) launch.
The signal launched when coil 105 encounters demagnetization label, echo is received as the coil 105 launching antenna, switch 1 400us time delay (by MCU control) is received through time delay, after amplifying 7 amplifications by prime, enter mixting circuit 9 with the 116 KHz/2 pulse signals 8 from MCU to be mixed, the low-pass filtered device of mixting circuit 9 output signal 10 filters, obtain the low frequency signal of label response, this low frequency signal sends MCU back to, the low frequency signal of label response is carried out A/D sampling simultaneously, calculate through MCU and identify whether to be tag response signal.If the label signal of non-demagnetization, MCU, by controlling time delay field-breaking switch 2, makes storage capacitor 104 to coil 105 repid discharge, and control coil 105 produces the label demagnetization to non-demagnetization of the strong electromagnetic pulse, sends warning by warning circuit 14 simultaneously.
Described governor circuit is arranged on master control pcb board 107, due to structure matching rational between modularized design and the module of circuit, the heating making this device is substantially reduced, and adds the setting at the some louvres in side controlling box 109 and efficiently solves heat dissipation problem.
This device is configured with security of system defencive function, and when system overheat, overvoltage, short circuit etc. being detected, system enters reforestation practices with interrupt mode, after waiting these parameters of detection normal, automatically restores to mastery routine state.
Claims (7)
1. the deactivation of acoustic magnetic anti-theft label and a detection device, including controlling box and demagnetizer；It is characterized in that,
Arranging governor circuit pcb board in described control box, governor circuit includes radiating circuit, receives circuit and degaussing circuit；
Described demagnetizer includes that timesharing is as launching antenna, reception antenna and the coil of anti-magnetized coil, demagnetization electric capacity and housing, this housing is made up of upper casing and lower casing, louvre is offered in side and the bottom surface of lower casing, described coil and demagnetization electric capacity are installed in the middle part of upper casing, time delay is set on upper casing and receives switch and time delay field-breaking switch, described coil is connected to the outfan of described radiating circuit, the reflected signal carrying out selfdemagnetization label that described coil receives receives switch by this time delay and is connected to the input of described reception circuit, described coil is connected with described degaussing circuit by this time delay field-breaking switch.
The deactivation of acoustic magnetic anti-theft label the most according to claim 1 and detection device, its feature existsIn,Described upper casing side is equipped with wiring PCB.
The deactivation of acoustic magnetic anti-theft label the most according to claim 1 and 2 and detection device, it is characterised in that described governor circuit also includes the warning circuit that MCU and MCU controls；The output of described reception circuit connects an input of MCU, and the end that controls of control end and described time delay field-breaking switch that the input of described degaussing circuit, the input of described radiating circuit, described time delay receive switch connects the corresponding output end of MCU respectively.
The deactivation of acoustic magnetic anti-theft label the most according to claim 3 and detection device, it is characterised in that described radiating circuit is made up of the power amplifier of 58KHz pulse signal wave filter and this wave filter of connection；Described reception circuit is by mixting circuit, the reception signal pre-amplifier being connected with the respective input of mixting circuit and 116KHz/2 circuit, and connects the low-pass filter circuit composition of mixting circuit outfan.
The deactivation of acoustic magnetic anti-theft label the most according to claim 3 and detection device, it is characterised in that described degaussing circuit includes the described demagnetization electric capacity being connected with booster circuit and this booster circuit outfan.
The deactivation of acoustic magnetic anti-theft label the most according to claim 3 and detection device, it is characterised in that described governor circuit also includes overheating protection circuit and overvoltage crowbar.
The deactivation of acoustic magnetic anti-theft label the most according to claim 1 and detection device, it is characterised in that described time delay receives switch, time delay field-breaking switch is reverse-blocking tetrode thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620257295.5U CN205645429U (en) | 2016-03-30 | 2016-03-30 | Sound magnetism security label deactivates and detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620257295.5U CN205645429U (en) | 2016-03-30 | 2016-03-30 | Sound magnetism security label deactivates and detection device |
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| CN205645429U true CN205645429U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620257295.5U Expired - Fee Related CN205645429U (en) | 2016-03-30 | 2016-03-30 | Sound magnetism security label deactivates and detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346251A (en) * | 2018-04-09 | 2018-07-31 | 宁波讯强电子科技有限公司 | A kind of demagnetizer and audio magnetic label decoder |
| 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 |
| CN109148076A (en) * | 2018-09-09 | 2019-01-04 | 浙江行雨网络科技有限公司 | A kind of more audio magnetic label demagnetizers and method of more anti-magnetized coils |
-
2016
- 2016-03-30 CN CN201620257295.5U patent/CN205645429U/en not_active Expired - Fee Related
Cited By (4)
| 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 |
| CN108346251A (en) * | 2018-04-09 | 2018-07-31 | 宁波讯强电子科技有限公司 | A kind of demagnetizer and audio magnetic label decoder |
| WO2019196958A1 (en) * | 2018-04-09 | 2019-10-17 | 宁波讯强电子科技有限公司 | Demagnetizing device and acousto-magnetic tag decoder |
| CN109148076A (en) * | 2018-09-09 | 2019-01-04 | 浙江行雨网络科技有限公司 | A kind of more audio magnetic label demagnetizers and method of more anti-magnetized coils |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180518 Address after: 200438 room B7-702, Bay Valley Science and Technology Park 1688, Guo Quan Bei Road, Yangpu District, Shanghai. Patentee after: Shanghai Chengdu Huayitejia Electronics Co. Ltd. Address before: 518109 Shenzhen, Guangdong, Baoan District, Longhua, 1 new buildings in big wave spring Xinyuan Industrial Zone Patentee before: Shenzhen Ronghua Electronic Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20210330 |