CN109671237A - A kind of commodity anti-theft method and the commodity anti-theft alarm based on this method - Google Patents
A kind of commodity anti-theft method and the commodity anti-theft alarm based on this method Download PDFInfo
- Publication number
- CN109671237A CN109671237A CN201910133489.2A CN201910133489A CN109671237A CN 109671237 A CN109671237 A CN 109671237A CN 201910133489 A CN201910133489 A CN 201910133489A CN 109671237 A CN109671237 A CN 109671237A
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- commodity
- theft
- alarm
- commodity anti
- circuit
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2428—Tag details
- G08B13/2448—Tag with at least dual detection means, e.g. combined inductive and ferromagnetic tags, dual frequencies within a single technology, tampering detection or signalling means on the tag
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The present invention relates to a kind of commodity anti-theft method and the commodity anti-theft alarm based on this method, the commodity anti-theft alarm on commodity is set, detects the decoded signal for the specific frequency that the decoder in market issues, decoded signal is matched；Successful match releases deployment state and removes the commodity anti-theft alarm on commodity without alarm, removes the commodity anti-theft alarm on commodity and passes through the detector in market later without triggering warning function；It fails to match or is not decoded by the decoder in market and continues deployment state, continues deployment state and removes commodity anti-theft alarm on commodity, or commodity band is crossed to the detector in market or the integrality of damaged merchandise, commodity anti-theft alarm are alarmed；And commodity anti-theft alarm band is crossed to the detector in market under any state, by the warning function for triggering the detector in market and alarm；To enrich commodity anti-theft alarm to the safeguard measure of commodity, the degree of protection to commercial articles safety is improved.
Description
Technical field
The present invention relates to commodity anti-theft technical fields, more specifically to a kind of commodity anti-theft method and are based on the party
The commodity anti-theft alarm of method.
Background technique
The commodity of market sale usually have burglar alarm, and burglar alarm is connect simultaneously by strong magnetic mode with commodity
Electronic tag is being arranged inside, having to pass through after purchase commodity could be by the electronic goods in market after the strong magnetic of cashier is extractd
The detector of burglary-resisting system (EAS system), otherwise electronic tag meeting detection trigger device is alarmed；But it has now been found that and much passes through
It makes the larceny that strong magnetic demagnetization key extracts burglar alarm by oneself, abandons after separating commodity and burglar alarm and smoothly escape
The detector of eas system (EAS system) realizes theft purpose.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of commodity anti-theft side
Method and commodity anti-theft alarm based on this method, it is intended to which solving existing commodity alarm can not behavior to alarm is tolled breakdown
It alarms, and so that alarm is lost warning function using strong magnetic key.
The technical solution adopted by the present invention to solve the technical problems is:
On the one hand, the present invention provides a kind of commodity anti-theft methods, comprising:
Commodity anti-theft alarm on commodity is set, in described method includes following steps: the commodity anti-theft report
The decoded signal for the specific frequency that the decoder of the eas system in alert device detection market issues, to the decoded signal
It is matched.
Preferably, successful match is carried out to the decoded signal, releases deployment state and removes the quotient on the commodity
Product burglar alarm, the commodity anti-theft alarm is without alarm.
Preferably, the electronic article surveillance system that the commodity anti-theft alarm on the commodity passes through market later is removed
The detector of system, the warning function of the detector of the eas system without triggering the market.
It is further preferred that decoded signal progress, it fails to match or the commodity anti-theft alarm does not pass through quotient
The decoder of the eas system of field is decoded, and continues deployment state.
Preferably, continue deployment state and remove the commodity anti-theft alarm on the commodity, the commodity anti-theft report
Alert device is alarmed.
Preferably, continue detector of the quilt of commodity described in deployment state with the eas system for crossing market, it is described
Commodity anti-theft alarm is alarmed.
Preferably, continue whether commodity described in deployment state-detection are damaged；The commodity are damaged, the commodity anti-theft
Alarm is alarmed.
It is further preferred that the detector of the commodity anti-theft alarm quilt with the eas system for crossing market,
By the warning function for the detector for triggering the eas system in the market and alarm.
On the other hand, the present invention provides a kind of commodity anti-theft alarms, including the quotient being arranged on the commodity
Product burglar alarm, and the decoding circuit and warning circuit that are arranged on the commodity anti-theft alarm；It is characterized in that,
The decoding circuit, for matching the solution for the specific frequency that the decoder of eas system in market issues
Code signal；
The warning circuit, for carrying out audible alarm.
It is further preferred that the commodity anti-theft alarm further includes the damage detection circuit being arranged on the commodity,
The damage detection circuit is detachably electrically connected with the commodity alarm, and is arranged on the commodity anti-theft alarm
Detection circuit and control circuit is removed, anti-theft circuit can also be set on the commodity anti-theft alarm；
The damage detection circuit, for detecting whether the commodity are damaged；
The dismounting detection circuit, for detecting whether the commodity anti-theft alarm is removed from the commodity；
The anti-theft circuit, the scanning signal issued for detecting the detector of eas system in market；
The damage detection circuit, the dismounting detection circuit, the decoding circuit, the anti-theft circuit with the control
Circuit connection processed, the warning circuit are connect with the anti-theft circuit, and the warning circuit is also connect with the decoding circuit；
The control circuit is used for according to the decoding circuit, the damage detection circuit, the dismounting detection circuit
Output signal controls the warning circuit by the anti-theft circuit and alarm or do not alarm.
The beneficial effects of the present invention are: the commodity anti-theft alarm on commodity is set, the electronic goods in market is detected
The decoded signal for the specific frequency that the decoder of burglary-resisting system issues, matches decoded signal；Successful match releases deployment
State removes the commodity anti-theft alarm on commodity without alarm, removes the commodity anti-theft alarm on commodity and passes through quotient later
The detector of the eas system of field is without triggering warning function；It fails to match or not anti-by the electronic goods in market
The decoder of theft system, which is decoded, continues deployment state, continues deployment state and removes commodity anti-theft alarm on commodity,
Or commodity band is crossed to the detector of the eas system in market or the integrality of damaged merchandise, commodity anti-theft alarm
Alarm；And commodity anti-theft alarm band is crossed to the detector of the eas system in market under any state,
By the warning function for the detector for triggering the eas system in market and alarm；To enrich commodity anti-theft
Alarm improves the degree of protection to commodity to the safeguard measure of commodity.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below in conjunction with attached drawing and reality
Applying example, the invention will be further described, and the accompanying drawings in the following description is only section Example of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other accompanying drawings:
Fig. 1 is the implementation process for the commodity anti-theft method that present pre-ferred embodiments one provide；
Fig. 2 is the implementation process for the commodity anti-theft method that present pre-ferred embodiments two provide；
Fig. 3 is the commodity anti-theft alarm that present pre-ferred embodiments three provide and is prevented using the electronic goods of sound magnetic technology
The circuit diagram that theft system matches；
Fig. 4 is the commodity anti-theft alarm that present pre-ferred embodiments four provide and is prevented using the electronic goods of radio-frequency technique
The circuit diagram that theft system matches.
Specific embodiment
In order to keep the purposes, technical schemes and advantages of the embodiment of the present invention clearer, implement below in conjunction with the present invention
Technical solution in example carries out clear, complete description, it is clear that and described embodiment is section Example of the invention, and
It is not all of embodiment.Based on the embodiment of the present invention, those of ordinary skill in the art are not before making the creative labor
Every other embodiment obtained is put, protection scope of the present invention is belonged to.
Embodiment one:
The implementation process that Fig. 1 shows the commodity anti-theft method of the offer of the embodiment of the present invention one is only shown for ease of description
Go out part related to the embodiment of the present invention, details are as follows:
In step s101, commodity anti-theft alarm is mounted on commodity, commodity anti-theft alarm is in deployment state.
In embodiments of the present invention, commodity anti-theft alarm is detachably connected with commodity, and commodity anti-theft alarm is mounted
Starting deployment, works as appearance during deployment: removing the commodity anti-theft alarm on commodity, commodity band is crossed market after on commodity
The detector of eas system, damages commodity, commodity anti-theft alarm when one such or a variety of situations
It alarms.
In step s 102, the decoder of the eas system in commodity anti-theft alarm real-time detection market issues
Specific frequency decoded signal, decoded signal is matched.
In embodiments of the present invention, commodity anti-theft alarm is not limited only to the eas system in detection market
The decoded signal for the specific frequency that decoder is issued, the decoded signal including illegally cracking the specific frequency that equipment is issued.
In step s 103, decoded signal successful match, commodity anti-theft alarm release deployment state, remove on commodity
Commodity anti-theft alarm, commodity anti-theft alarm is without alarm.
In embodiments of the present invention, (commodity anti-theft alarm is only capable of commodity anti-theft alarm with decoded signal successful match
Successful match is carried out with the decoded signal of the decoder of the eas system in market, the specific frequency of sending), it is vertical both to solve
Except deployment state, during releasing deployment state: removing the commodity anti-theft alarm on commodity, commodity anti-theft alarm is without report
It is alert.
In step S104, the commodity anti-theft alarm on commodity is removed later by the eas system in market
Detector, the detector of the eas system in market is without alarm.
In embodiments of the present invention, commodity anti-theft alarm and decoded signal carry out successful match, release deployment state it
The commodity anti-theft alarm on commodity is removed afterwards, then commodity band is crossed to the detector of the eas system in market, market
Eas system detector without alarm.
It needs to be illustrated: commodity anti-theft alarm band is crossed to the detector of the eas system in market,
By the warning function for the detector for triggering the eas system in market and alarmed (including at commodity anti-theft alarm
During deployment state or during releasing deployment state).
Embodiment two:
Fig. 2 shows the implementation processes of commodity anti-theft method provided by Embodiment 2 of the present invention only to show for ease of description
Go out part related to the embodiment of the present invention, details are as follows:
In step s 201, commodity anti-theft alarm is mounted on commodity, commodity anti-theft alarm is in deployment state.
In embodiments of the present invention, commodity anti-theft alarm is detachably connected with commodity, and commodity anti-theft alarm is mounted
Starting deployment, works as appearance during deployment: removing the commodity anti-theft alarm on commodity, commodity band is crossed market after on commodity
The detector of eas system, damages commodity, commodity anti-theft alarm when one such or a variety of situations
Alarm.
In step S202, the decoder of the eas system in commodity anti-theft alarm real-time detection market is issued
Specific frequency decoded signal, decoded signal is matched.
In embodiments of the present invention, commodity anti-theft alarm is not limited only to the eas system in detection market
The decoded signal for the specific frequency that decoder is issued, the decoded signal including illegally cracking the specific frequency that equipment is issued.
In step S203, decoded signal it fails to match or commodity anti-theft alarm do not pass through market electronic goods it is anti-
The decoder of theft system is decoded, and continues deployment state.
In embodiments of the present invention, work as appearance: decoding of the commodity anti-theft alarm to the eas system in market
It fails to match for the decoded signal for the specific frequency that device is issued, and commodity anti-theft alarm does not pass through the electronic article surveillance system in market
The decoder of system be decoded (including use market eas system decoder other than decoding device, such as:
Illegally crack equipment and strong magnetic key), commodity anti-theft alarm continues to deploy troops on garrison duty when one such or a variety of situations.
In step S204, continue deployment state: removing the commodity anti-theft alarm on commodity, commodity band is crossed into market
The detector of eas system, damages commodity, and one such or a variety of situation commodity anti-theft alarms are equal
It alarms.
In embodiments of the present invention: working as appearance during deployment state: the commodity anti-theft alarm on commodity is removed, by commodity
Detector with the eas system for crossing market, damages commodity, commodity when one such or a variety of situations
Burglar alarm is alarmed.
It needs to be illustrated: commodity anti-theft alarm band is crossed to the detector of the eas system in market,
By the warning function for the detector for triggering the eas system in market and alarmed (including at commodity anti-theft alarm
During deployment state or during releasing deployment state).
Embodiment three:
Fig. 3 is shown the commodity anti-theft alarm of the offer of the embodiment of the present invention three and is prevented using the electronic goods of sound magnetic technology
The circuit diagram that theft system matches, for ease of description, only parts related to embodiments of the present invention are shown.
Commodity anti-theft alarm provided in an embodiment of the present invention is and the electronics that uses sound magnetic technology (frequency 5.8KHZ)
The commodity anti-theft alarm that burglary protection system for commodities matches, including the commodity anti-theft alarm being arranged on commodity, and setting
Decoding circuit and warning circuit on commodity anti-theft alarm；
Decoding circuit, for matching the decoding letter for the specific frequency that the decoder of eas system in market issues
Number；
Warning circuit, for carrying out audible alarm.
Commodity anti-theft alarm further includes the damage detection circuit being arranged on commodity, and damage detection circuit and commodity are alarmed
Device is detachably electrically connected, and the dismounting detection circuit and control circuit and preventing fraudulent use of electricity that are arranged on commodity anti-theft alarm
Road；
Detection circuit is damaged, for detecting whether commodity are damaged；
Detection circuit is removed, for detecting whether commodity anti-theft alarm is removed from commodity；
Anti-theft circuit, the scanning signal issued for detecting the detector of eas system in market；
Detection circuit is damaged, detection circuit, decoding circuit are removed, anti-theft circuit connects to the control circuit, warning circuit
It is connect with anti-theft circuit, warning circuit is also connect with decoding circuit；
The output signal that control circuit is used to remove detection circuit according to decoding circuit, damage detection circuit passes through antitheft
Circuit control warning circuit alarm or do not alarm；Such as: after commodity anti-theft alarm is mounted on commodity, commodity anti-theft
Alarm starts deployment state, and appearance is worked as during deployment state: the commodity anti-theft alarm removed on commodity (removes detection circuit
Detect that commodity anti-theft alarm is removed from commodity), the detector that commodity band is crossed the eas system in market is (anti-
Stealing electricity road detects the scanning signal that the detector of the eas system in market issues), (damage is damaged to commodity
Detection circuit detects that commodity are damaged), whens one such or a variety of situations corresponding dismounting detection circuit, anti-theft circuit,
Damage detection circuit exports corresponding feedback signal to control circuit, and control circuit controls warning circuit by anti-theft circuit and carries out
Audible alarm；
Or during deployment state, using market eas system decoder to commodity anti-theft alarm into
(decoded signal for the specific frequency that the decoder of decoding circuit and the eas system in market is issued carries out for row decoding
Successful match), successfully decoded had both released deployment state；During releasing deployment state: the commodity anti-theft alarm on commodity is removed,
Commodity anti-theft alarm is without alarm；The commodity anti-theft alarm on commodity is removed later by the electronic article surveillance in market
The detector of system, the detector of the eas system in market is without alarm.
Need to be illustrated: commodity anti-theft alarm passes through the eas system in market at any time
Detector, the detector that will all trigger the eas system in market are alarmed.
As shown in figure 3, decoding circuit includes the coil T1 for receiving decoded signal, the Schottky diode for pressure limiting
D4, storage capacitor C21, the first triode Q2, tongue tube SW-D for energy storage；The first end of coil T1 is connected with first resistor
The other end of R28, first resistor R28 is grounded, and the second end of coil T1 is connected with second resistance R6, and the first of storage capacitor C21
End is connect with the other end of first resistor R28 and the other end is connect with the other end of second resistance R6；First resistor R28's is another
End and the other end of second resistance R6 are also parallel with 3rd resistor R29；The other end of second resistance R6 is also connected with the 4th resistance
R37, the other end of the 4th resistance R37 are connected with the 5th resistance R34, the other end of the 4th resistance R37 also with Schottky diode
3 pins of D4 connect, the 1 pin ground connection of Schottky diode D4 and the anode connection of 2 pins and power supply；5th resistance R34
The other end is connect with the base stage of the first triode Q2, and the collector of the first triode Q2 connects to the control circuit, the first triode
The emitter of Q2 is connect with the first end of tongue tube SW-D, the second end ground connection of tongue tube SW-D；The other end of 5th resistance R34
The other end for being also connected with the 6th resistance R33 and first capacitor C22, the 6th resistance R33 and first capacitor C22 is grounded；Coil
T1 and storage capacitor C21 constitute LC resonance circuit, when extraneous radio frequency signals (such as: the solution of the eas system in market
Code device issue specific frequency decoded signal) frequency it is consistent with the frequency of LC resonance circuit generate resonance, make storage capacitor
There is charge in C21, first triode Q2 is connected after storage capacitor is rapidly fully charged；Tongue tube SW-D is being penetrated simultaneously
The influence of frequency signal is connected immediately, tongue tube SW-D and the first triode Q2 cooperation by the level of the collector of the first triode into
Row drags down, and control circuit is made to obtain low level.
Decoding circuit further includes the second triode Q3, the 7th resistance R32, second capacitor C18, diode D5；Two or three pole
The collector of pipe Q3 is connect with the first end of tongue tube SW-D and emitter is connect with the second end of tongue tube SW-D, the two or three pole
The base stage of pipe Q3 is connect with the 7th resistance R32, and the other end of the 7th resistance R32 is connect with the second capacitor C18, the second capacitor C18
The other end connect with anti-theft circuit；The base stage of second triode Q3 is also connect with the cathode of diode D5, and diode D5 is just
Pole ground connection.
As shown in figure 3, anti-theft circuit includes three foot boost inductance L1,2 pins of three foot boost inductance L1 are connected with third
The other end of capacitor C13, third capacitor C13 are grounded；2 pins of three foot boost inductance L1 and the anode of power supply connect, three foot liters
1 pin of voltage inductance L1 is connect with the other end of the second capacitor C18；3 pins of three foot boost inductance L1 are connected with the three or three pole
Pipe Q1, the collector of third transistor Q1 are connect with 3 pins of three foot boost inductance L1, and the emitter of third transistor Q1 connects
Ground, the base stage of third transistor Q1 are connected with the 8th resistance R2, and the other end of the 8th resistance R2 connects to the control circuit；
As shown in figure 3, warning circuit is piezo buzzer J2, the first end of piezo buzzer J2 and three feet boosting electricity
Feel the 2 pins connection of L1, and second end is connect with 1 pin of three foot boost inductance L1；The three or three pole is controlled by control circuit
The continuous switch operating state of pipe Q1, being full of the electric energy stored in three foot boost inductance L1 constantly, (three feet boost with release
Inductance L1 is influenced also generate charge by radiofrequency signal, and then is full of the electric energy of storage constantly and release), make piezoelectric type
Buzzer J2 issues the sound, alarms (audible alarm) to realize；The second capacitor C18 and the 7th resistance R32 constitutes RC circuit simultaneously,
While the electric energy release stored in three foot boost inductance L1, charge to the second capacitor C18, and the second triode Q3 is led
It is logical.
As shown in figure 3, damage detection circuit is conducting wire Wire (conducting wire Wire can also be substituted for conductive fabric), conducting wire Wire
First end be connected with the first conductive sheet B, the first conductive bullet with the first conductive sheet B cooperation is provided on commodity anti-theft alarm
Piece SW-B, the first electroconductive elastic sheet SW-B are connected with the 9th resistance R7, the other end ground connection of the 9th resistance R7；The second of conducting wire Wire
End is connected with the second conductive sheet C, and the second electroconductive elastic sheet SW- with the second conductive sheet C cooperation is provided on commodity anti-theft alarm
C, the second electroconductive elastic sheet SW-C are connected with the 4th capacitor C17 and the tenth resistance R14, the other end and the tenth of the 4th capacitor C17
The other end of resistance R14 is grounded, and the second electroconductive elastic sheet SW-C is also connected to the control circuit；Conducting wire Wire or conductive fabric are wound
On commodity one detection commodity integrality, conducting wire Wire or conductive fabric will be caused to break when commodity are destroyed, or not with quotient
Product alarm forming circuit, to realize whether detection commodity are damaged；And examine damage using conductive sheet and electroconductive elastic sheet cooperation
Slowdown monitoring circuit is detachably connected with commodity anti-theft alarm ontology.
As shown in figure 3, damage detection circuit is limit switch SW-A, the mechanical contact of limit switch SW-A is contacted with quotient
Product, the first end of limit switch SW-A are connected with eleventh resistor R16, and the other end and control circuit of eleventh resistor R16 connects
It connects, the second end ground connection of limit switch SW-A；Detect whether commodity anti-theft alarm is torn open from commodity by limit switch SW-A
It removes, at low cost, stability is high.
As shown in figure 3, control circuit is microcontroller U1, the vdd terminal of microcontroller U1 and the anode of power supply are connected, and even
It is connected to twelfth resistor R12, the other end of twelfth resistor R12 is connect with the end VPP/RA3 of microcontroller U1, twelfth resistor
The other end of R12 is also connected with the 5th capacitor C19, the other end ground connection of the 5th capacitor C19, the other end of twelfth resistor R12
It is connect with the collector of the first triode Q2；The end VPP/RA3 of microcontroller U1 for detect decoding circuit whether with market
The decoded signal for the specific frequency that the decoder of eas system issues carries out successful match；The GP2/ of microcontroller U1
The end RA2 is connect with the other end of the 8th resistance R2, and the end GP2/RA2 of microcontroller U1 is for cutting third transistor Q1 constantly
Change jobs state, and then so that piezo buzzer J2 is issued the sound by three foot boost inductance L1；The GP0/RA0 of microcontroller U1
End is connected with thirteenth resistor R10, and the other end of thirteenth resistor R10 is electric with the second electroconductive elastic sheet SW-C and the 11st respectively
The other end connection of R16 is hindered, the end GP0/RA0 of microcontroller U1 is for detecting whether limit switch SW-A disconnects, conducting wire Wire
Or whether conductive fabric forms open circuit.
Example IV:
Fig. 4 is shown the commodity anti-theft alarm of the offer of the embodiment of the present invention four and is prevented using the electronic goods of radio-frequency technique
The circuit diagram that theft system matches, for ease of description, only parts related to embodiments of the present invention are shown.
Commodity anti-theft alarm provided in an embodiment of the present invention is and the electronics that uses radio-frequency technique (frequency 8.2MHZ)
The commodity anti-theft alarm that burglary protection system for commodities matches, including the commodity anti-theft alarm being arranged on commodity, and setting
Decoding circuit and warning circuit on commodity anti-theft alarm；
Decoding circuit, for matching the decoding letter for the specific frequency that the decoder of eas system in market issues
Number；
Warning circuit, for carrying out audible alarm.
Commodity anti-theft alarm further includes the damage detection circuit being arranged on commodity, and damage detection circuit and commodity are alarmed
Device is detachably electrically connected, and the dismounting detection circuit and control circuit being arranged on commodity anti-theft alarm；
Detection circuit is damaged, for detecting whether commodity are damaged；
Detection circuit is removed, for detecting whether commodity anti-theft alarm is removed from commodity；
Detection circuit is damaged, detection circuit, decoding circuit are removed, warning circuit connects to the control circuit；
Control circuit is used to damage detection circuit according to decoding circuit, removes the output signal control alarm of detection circuit
Circuit alarm or do not alarm；Such as: after commodity anti-theft alarm is mounted on commodity, commodity anti-theft alarm starts cloth
Anti- state works as appearance during deployment state: the commodity anti-theft alarm removed on commodity (removes detection circuit and detects that commodity are anti-
Alarm is stolen to remove from commodity), commodity are damaged (damage detection circuit detects that commodity are damaged), it is one such
Or corresponding dismounting detection circuit when a variety of situations, damage detection circuit exports corresponding feedback signal to control circuit, control
Circuit control warning circuit carries out audible alarm；
Or during deployment state, using market eas system decoder to commodity anti-theft alarm into
(decoded signal for the specific frequency that the decoder of decoding circuit and the eas system in market is issued carries out for row decoding
Successful match), successfully decoded had both released deployment state；During releasing deployment state: the commodity anti-theft alarm on commodity is removed,
Commodity anti-theft alarm is without alarm；The commodity anti-theft alarm on commodity is removed later by the electronic article surveillance in market
The detector of system, the detector of the eas system in market is without alarm.
Need to be illustrated: commodity anti-theft alarm passes through the eas system in market at any time
Detector, the detector that will all trigger the eas system in market are alarmed.
As shown in figure 4, decoding circuit includes the coil T1 for receiving decoded signal, the Schottky diode for pressure limiting
D4, storage capacitor C21, the first triode Q2 for energy storage；The first end of coil T1 is connected with first resistor R28, the first electricity
The other end ground connection of R28 is hindered, the second end of coil T1 is connected with second resistance R6, the first end of storage capacitor C21 and the first electricity
The other end of resistance R28 connects and the other end is connect with the other end of second resistance R6；The other end of first resistor R28 and the second electricity
The other end of resistance R6 is also parallel with 3rd resistor R29；The other end of second resistance R6 is also connected with first capacitor C23, the first electricity
The other end for holding C23 is connect with 3 pins of Schottky diode D4, and 1 pin of Schottky diode D4 is grounded and 2 pins connect
There is the 4th resistance R34；The other end of 4th resistance R34 is connect with the base stage of the first triode Q2, the current collection of the first triode Q2
Pole connects to the control circuit, the emitter ground connection of the first triode Q2；The other end of 4th resistance R34 is also connected with the 5th resistance
The other end of R33 and the second capacitor C22, the 5th resistance R33 and the second capacitor C22 are grounded；Coil T1 and storage capacitor C21 structure
At LC resonance circuit, when extraneous radio frequency signals (such as: the specific frequency that the decoder of the eas system in market issues
Decoded signal) frequency it is consistent with the frequency of LC resonance circuit generate resonance, make have charge, energy storage in storage capacitor C21
First triode Q2 is connected after capacitor is rapidly fully charged, the level of the collector of the first triode Q2 dragged down, make to control
Circuit processed obtains low level.
As shown in figure 4, anti-theft circuit includes three foot boost inductance L1,2 pins of three foot boost inductance L1 are connected with third
The other end of capacitor C13, third capacitor C13 are grounded；2 pins of three foot boost inductances and the anode of power supply connect, the boosting of three feet
3 pins of inductance L1 are connected with the second triode Q1, the 3 pins company of the collector of the second triode Q1 and three foot boost inductance L1
It connects, the emitter ground connection of the second triode Q1, the base stage of the second triode Q1 is connected with the 6th resistance R2, and the 6th resistance R2's is another
One end connects to the control circuit；
As shown in figure 4, warning circuit is piezo buzzer J2, the first end of piezo buzzer J2 and three feet boosting electricity
Feel the 2 pins connection of L1, and second end is connect with 1 pin of three foot boost inductance L1；The two or three pole is controlled by control circuit
The continuous switch operating state of pipe Q1, make the electric energy stored in three foot boost inductance L1 be constantly full of with release, make piezoelectric type
Buzzer J2 issues the sound, alarms (audible alarm) to realize.
As shown in figure 4, damage detection circuit is conducting wire Wire (conducting wire Wire can also be substituted for conductive fabric), conducting wire Wire
First end be connected with the first conductive sheet B, the first conductive bullet with the first conductive sheet B cooperation is provided on commodity anti-theft alarm
Piece SW-B, the first electroconductive elastic sheet SW-B are connected with the 7th resistance R7, the other end ground connection of the 7th resistance R7；The second of conducting wire Wire
End is connected with the second conductive sheet C, and the second electroconductive elastic sheet SW- with the second conductive sheet C cooperation is provided on commodity anti-theft alarm
C, the second electroconductive elastic sheet SW-C are connected with the 4th capacitor C17 and the 8th resistance R14, the other end and the 8th of the 4th capacitor C17
The other end of resistance R14 is grounded, and the second electroconductive elastic sheet SW-C is also connected to the control circuit；Conducting wire Wire or conductive fabric are wound
On commodity one detection commodity integrality, conducting wire Wire or conductive fabric will be caused to break when commodity are destroyed, or not with quotient
Product alarm forming circuit, to realize whether detection commodity are damaged；And examine damage using conductive sheet and electroconductive elastic sheet cooperation
Slowdown monitoring circuit is detachably connected with commodity anti-theft alarm ontology.
As shown in figure 4, damage detection circuit is limit switch SW-A, the mechanical contact of limit switch SW-A is contacted with quotient
Product, the first end of limit switch SW-A are connected with the 9th resistance R16, and the other end of the 9th resistance R16 connects to the control circuit, limit
The second end of bit switch SW-A is grounded；Detect whether commodity anti-theft alarm is removed from commodity by limit switch SW-A, at
This is low, and stability is high.
As shown in figure 4, control circuit is microcontroller U1, the vdd terminal of microcontroller U1 and the anode of power supply are connected, and even
It is connected to the tenth resistance R12, the other end of the tenth resistance R12 is connect with the end VPP/RA3 of microcontroller U1, the tenth resistance R12's
The other end is also connected with the 5th capacitor C19, the other end ground connection of the 5th capacitor C19, the other end and the one or three of the tenth resistance R12
The collector of pole pipe Q2 connects；The end VPP/RA3 of microcontroller U1 for detect decoding circuit whether the electronic goods with market
The decoded signal for the specific frequency that the decoder of burglary-resisting system issues carries out successful match；The end GP2/RA2 of microcontroller U1 with
The other end of 6th resistance R2 connects, and the end GP2/RA2 of microcontroller U1 is for making the second continuous switch operating of triode Q1
State, and then so that piezo buzzer J2 is issued the sound by three foot boost inductance L1；The end GP0/RA0 of microcontroller U1 connects
There is eleventh resistor R10, the other end of eleventh resistor R10 is respectively with the second electroconductive elastic sheet SW-C's and the 9th resistance R16
Other end connection, the end GP0/RA0 of microcontroller U1 is for detecting whether limit switch SW-A disconnects, conducting wire Wire or conductive fabric
Whether open circuit is formed.
The foregoing is merely the preferred embodiments of technical solution of the present invention, are not intended to limit protection model of the invention
It encloses.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention
Protection scope within.
Claims (10)
1. a kind of commodity anti-theft method, including the commodity anti-theft alarm being arranged on commodity, which is characterized in that the method packet
Include following steps: the specific frequency that the decoder of the eas system in commodity anti-theft alarm detection market issues
Decoded signal, the decoded signal is matched.
2. commodity anti-theft method according to claim 1, which is characterized in that the method also includes: the decoding is believed
Number carry out successful match, release deployment state remove the commodity anti-theft alarm on the commodity, the commodity anti-theft report
Alert device is without alarm.
3. commodity anti-theft method according to claim 2, which is characterized in that the method also includes: remove the commodity
On the commodity anti-theft alarm after pass through market eas system detector, without triggering the market
Eas system detector warning function.
4. commodity anti-theft method according to claim 1, which is characterized in that the method also includes: the decoding is believed
The decoder for number carrying out the eas system that it fails to match or the commodity anti-theft alarm does not pass through market is solved
Code, continues deployment state.
5. commodity anti-theft method according to claim 4, which is characterized in that the method also includes: continue deployment state
The commodity anti-theft alarm on the commodity is removed, the commodity anti-theft alarm is alarmed.
6. commodity anti-theft method according to claim 4, which is characterized in that the method also includes: continue deployment state
The commodity are alarmed by the detector with the eas system for crossing market, the commodity anti-theft alarm.
7. commodity anti-theft method according to claim 4, which is characterized in that the method also includes: continue deployment state
Detect whether the commodity are damaged；The commodity are damaged, and the commodity anti-theft alarm is alarmed.
8. commodity anti-theft method according to claim 1, which is characterized in that the method also includes: the commodity anti-theft
Alarm will trigger the eas system in the market by the detector with the eas system for crossing market
The warning function of detector is simultaneously alarmed.
9. a kind of commodity anti-theft alarm based on any commodity anti-theft method of claim 1 to 8, including be arranged described
The commodity anti-theft alarm on commodity, and the decoding circuit and alarm electricity that are arranged on the commodity anti-theft alarm
Road；It is characterized in that,
The decoding circuit, for matching the decoding letter for the specific frequency that the decoder of eas system in market issues
Number；
The warning circuit, for carrying out audible alarm.
10. commodity anti-theft apparatus according to claim 9, which is characterized in that the commodity anti-theft alarm further includes setting
Damage detection circuit on the commodity, the damage detection circuit are detachably electrically connected with the commodity alarm, and
Dismounting detection circuit and control circuit on the commodity anti-theft alarm is set, it can be on the commodity anti-theft alarm
Anti-theft circuit is set；
The damage detection circuit, for detecting whether the commodity are damaged；
The dismounting detection circuit, for detecting whether the commodity anti-theft alarm is removed from the commodity；
The anti-theft circuit, the scanning signal issued for detecting the detector of eas system in market；
The damage detection circuit, the dismounting detection circuit, the decoding circuit, the anti-theft circuit are electric with the control
Road connection, the warning circuit are connect with the anti-theft circuit, and the warning circuit is also connect with the decoding circuit；
The control circuit is used for according to the decoding circuit, the damage detection circuit, the output for removing detection circuit
Signal controls the warning circuit by the anti-theft circuit and alarm or do not alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910133489.2A CN109671237A (en) | 2019-02-22 | 2019-02-22 | A kind of commodity anti-theft method and the commodity anti-theft alarm based on this method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910133489.2A CN109671237A (en) | 2019-02-22 | 2019-02-22 | A kind of commodity anti-theft method and the commodity anti-theft alarm based on this method |
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| CN109671237A true CN109671237A (en) | 2019-04-23 |
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| CN110544356A (en) * | 2019-09-20 | 2019-12-06 | 深圳亿东科技股份有限公司 | Anti-theft label |
| CN113140090A (en) * | 2021-04-23 | 2021-07-20 | 深圳市东峰盛科技有限公司 | Power adapter system for commodity theft prevention |
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