阅读说明：本技术 一种防盗标签 (Anti-theft label ) 是由 李云辉 李晓鸣 于 2019-09-20 设计创作，主要内容包括：本发明公开一种防盗标签,包括：防盗标签本体,所述防盗标签本体包括：供电模块、磁感应模块和报警模块,所述供电模块用于给所述磁感应模块和报警模块供电,所述磁感应模块包括声磁软标签和TMR传感器,所述TMR传感器用于检测所述声磁软标签的磁场强度变化,所述磁感应模块输出端与所述报警模块电性相连,所述磁感应模块能够根据所述声磁软标签的磁场强度变化使得所述防盗标签处于有效状态或失效状态。本发明通过将新一代磁传感器技术以及电子商品防盗系统相结合,将TMR传感器和声磁软标签整合在有源硬标签内,既可以保持原有的电子商品防盗系统中的声磁软标签的防盗功能和可靠性,又增加了有源硬标签所具有的防盗功能。(The invention discloses an anti-theft label, comprising: the security label body, the security label body includes: power module, magnetic induction module and alarm module, power module is used for magnetic induction module and alarm module power supply, magnetic induction module includes soft label of reputation magnetism and TMR sensor, the TMR sensor is used for detecting the magnetic field intensity of the soft label of reputation magnetism changes, magnetic induction module output with the alarm module electrical property links to each other, magnetic induction module can be according to the magnetic field intensity of the soft label of reputation magnetism changes and makes the security label is in effective state or failure state. The TMR sensor and the acoustic magnetic soft tag are integrated in the active hard tag by combining a new generation of magnetic sensor technology and an electronic article anti-theft system, so that the anti-theft function and reliability of the acoustic magnetic soft tag in the original electronic article anti-theft system can be maintained, and the anti-theft function of the active hard tag is increased.)

1. An antitheft label, comprising an antitheft label body, wherein the antitheft label body comprises: power module, magnetic induction module and alarm module, power module is used for magnetic induction module and alarm module power supply, magnetic induction module includes soft label of reputation magnetism and TMR sensor, the TMR sensor is used for detecting the magnetic field intensity of the soft label of reputation magnetism changes, magnetic induction module output with the alarm module electrical property links to each other, magnetic induction module can be according to the magnetic field intensity of the soft label of reputation magnetism changes and makes the security label is in effective state or failure state.

2. The security tag of claim 1 wherein the end face of the TMR sensor magnetic field sensing direction is aligned with the long end edge of the inner hard magnetic metal strip of the acousto-magnetic soft tag.

3. The security tag of claim 1 wherein the TMR sensor has an operating threshold greater than 10GS and a trip point less than 10 GS.

4. The security tag of claim 1, further comprising a sensor portion for detecting on/off of a connection line, a circuit switch, a photoelectric change, a magnetic field change or a distance change to control the alarm module to alarm.

5. The security tag according to claim 1 or 4, further comprising a base plate, wherein two contacts are provided on the base plate, the two contacts are connected by a connecting wire, and the alarm module alarms when the connecting wire is disconnected.

6. The anti-theft tag according to claim 5, wherein the anti-theft tag comprises a controllable switch element, the controllable switch element is an NMOS tube, the grid of the NMOS tube is connected with one of the contacts, the one contact is connected with the other contact through a connecting wire, the other contact is connected with the negative pole of the power supply module, the one contact is electrically connected with the positive pole of the power supply module, the drain of the NMOS tube is connected with the alarm module, when the connecting wire is disconnected, the grid of the NMOS tube is changed to be high, and the NMOS controls the alarm module to alarm.

7. The anti-theft tag according to claim 4, wherein the anti-theft tag comprises an MCU, one of the contacts is connected with the MCU, the MCU is electrically connected with the alarm module, and when the connecting wire is disconnected, the MCU controls the alarm module to alarm.

8. The security tag of claim 1 wherein said security tag body further comprises a test button, said alarm module alarming when said test button is depressed.

9. The anti-theft tag according to claim 7, wherein the anti-theft tag comprises a controllable switch element, the controllable switch element is an NMOS transistor, a grid electrode of the NMOS transistor is electrically connected with one end of the key, a drain electrode of the NMOS transistor is connected with the alarm module, when the key is pressed, the grid electrode of the NMOS transistor goes high, and the NMOS controls the alarm module to alarm.

10. The security tag of claim 1, wherein the TMR sensor is selected from a TMR1300 series product; the alarm module comprises an indicator light, a buzzer or a combination thereof; the acoustic magnetic soft label is a 58K acoustic magnetic soft label; the power supply module is a button battery.

Technical Field

The invention relates to the field of commodity anti-theft systems, in particular to an anti-theft label.

Background

The existing active anti-theft tags are used for multiple times, and the low-end active anti-theft tags are used for opening a machine type locking mechanism in the anti-theft tags through special strong magnets to take off the tags so as to be reused subsequently. The high-end active anti-theft tag sends a coded wireless signal to a specific receiving part of the anti-theft tag by using an externally matched special electronic decoding key, and after receiving the specific signal, the tag can disable an anti-theft alarm function and can be reused subsequently after being taken down. The existing active anti-theft hard tag adopts a backward technology, cannot effectively utilize existing mature equipment in a market, and is complex to operate and high in product cost during actual use.

Accordingly, the prior art is deficient and needs improvement.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an anti-theft label.

The technical scheme of the invention is as follows: the invention provides an anti-theft tag, which comprises an anti-theft tag body, wherein the anti-theft tag body comprises: power module, magnetic induction module and alarm module, power module is used for magnetic induction module and alarm module power supply, magnetic induction module includes soft label of reputation magnetism and TMR sensor, the TMR sensor is used for detecting the magnetic field intensity of the soft label of reputation magnetism changes, magnetic induction module output with the alarm module electrical property links to each other, magnetic induction module can be according to the magnetic field intensity of the soft label of reputation magnetism changes and makes the security label is in effective state or failure state.

Further, the end face of the magnetic field induction direction (i.e. the magnetic sensitivity direction) of the TMR sensor is aligned with the long end edge of the inner hard magnetic metal strip of the acousto-magnetic soft tag.

Further, the working threshold of the TMR sensor is larger than 10GS, and the release point is smaller than 10 GS.

Furthermore, the anti-theft label also comprises a sensor part which is used for detecting the on-off of a connecting line, a circuit switch, photoelectric change, magnetic field change or distance change so as to control the alarm module to alarm.

Furthermore, the anti-theft label also comprises a bottom plate, wherein two contacts are arranged on the bottom plate and connected through a connecting wire, and when the connecting wire is disconnected, the alarm module gives an alarm.

Further, the anti-theft tag comprises a controllable switch element, the switch element is an NMOS (N-channel metal oxide semiconductor) tube, a grid electrode of the NMOS tube is connected with one contact of the contacts, the contact is connected with the other contact through a connecting wire, the other contact is connected with the negative electrode of the power supply module, the contact is electrically connected with the positive electrode of the power supply module, a drain electrode of the NMOS tube is connected with the alarm module, when the connecting wire is disconnected, the grid electrode of the NMOS tube becomes high level, and the NMOS controls the alarm module to alarm.

Further, the anti-theft tag comprises an MCU, one of the contacts is connected with the MCU, the MCU is electrically connected with the alarm module, and when the connecting wire is disconnected, the MCU controls the alarm module to alarm.

Furthermore, the anti-theft label body also comprises a test key, and the alarm module gives an alarm when the test key is pressed.

Furthermore, the anti-theft tag comprises a controllable switch element, the controllable switch element is an NMOS (N-channel metal oxide semiconductor) tube, the grid electrode of the NMOS tube is electrically connected with one end of the key, the drain electrode of the NMOS tube is connected with the alarm module, when the key is pressed down, the grid electrode of the NMOS tube becomes high level, and the NMOS controls the alarm module to alarm.

Further, a TMR1300 series product is selected for the TMR sensor; the alarm module comprises an indicator light, a buzzer or a combination thereof; the acoustic magnetic soft label is a 58K acoustic magnetic soft label; the power supply module is a button battery, and other power supply modes can be adopted.

By adopting the scheme, the TMR sensor and the acoustic-magnetic soft tag are integrated in the active hard tag because the TMR element has the characteristics of micro power consumption, high resolution, large dynamic range and the like, and the TMR sensor and the acoustic-magnetic soft tag are integrated in the active hard tag, so that the TMR state ensures that the anti-theft tag is effective before the commodity is legally checked out, the anti-theft tag can cause the self alarm of the anti-theft tag according to the change of the state of the adopted sensor, and the alarm of the safety door is caused when the commodity illegally passes through the exit door of a market. After legal checkout, under the action of anti-theft demagnetizing equipment configured at a cashier desk of a shopping mall, the magnetic field intensity of the acoustic magnetic soft tag is changed, so that the TMR state is changed, and the anti-theft tag is invalid, thereby not only maintaining the anti-theft function and reliability of the acoustic magnetic soft tag in the original electronic goods anti-theft system, but also increasing the anti-theft function (such as wire cutting alarm, illegal removal alarm and the like) of the active hard tag, and leading the functions of the anti-theft tag to be richer and the reliability to be higher; the cost of the anti-theft tag is reduced, the disposable active anti-theft hard tag can be realized, and the anti-theft capability of the commodity is enhanced and the self-service purchase mode is adapted; meanwhile, the anti-theft label after demagnetization failure can be reused after external magnetization.

Drawings

Fig. 1 is a schematic connection diagram of the frame structure of the present invention.

Fig. 2 is a schematic diagram of the TMR sensor mounting of the present invention.

Fig. 3 is a circuit diagram of a first embodiment of the present invention.

Fig. 4 is a circuit diagram of a second embodiment of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

Referring to fig. 1, the present invention provides an anti-theft tag, including: the security label body, the security label body includes: power module 1, magnetic induction module 2 and alarm module 3, power module 1 be used for magnetic induction module 2 and the power supply of alarm module 3 can choose for use to be button cell, and the clothe moth can choose for use to be other power supply unit. The alarm module 3 may issue an alarm. Magnetic induction module 2 includes soft label of acoustomagnetic and TMR sensor, the TMR sensor is used for detecting the magnetic field intensity of the soft label of acoustomagnetic changes. Referring to fig. 2 (the TMR sensor in this figure is taken as an example of an SOT23 package), when the soft acoustic-magnetic label 22 and the TMR sensor 21 are mounted, the end face of the magnetic field sensing direction (i.e. the magnetic sensitivity direction) of the TMR sensor 21 is aligned with the long end edge of the hard magnetic metal strip 23 in the pasting face of the soft acoustic-magnetic label 22 for pasting. The TMR sensor usually has an operating threshold of more than 10GS, and a release point of preferably less than 10GS, so that the TMR sensor and the acousto-magnetic soft tag can be assembled conveniently. The acoustic magnetic soft label can be a 58K acoustic magnetic soft label. The model of the TMR sensor can be a TMR1300 series product, such as TMR 1302. The output end of the magnetic induction module 2 is electrically connected with the alarm module 3, and the magnetic induction module 2 can enable the anti-theft tag to be in an effective state or an invalid state according to the magnetic field intensity change of the acoustic magnetic soft tag. The alarm module 3 can be a buzzer, an indicator light or a combination thereof. The anti-theft label also comprises a sensor part for detecting the on-off of a connecting line, a circuit switch, photoelectric change, magnetic field change or distance change so as to control the alarm module to alarm. If the detection of the on-off of the connecting line is taken as an example, the anti-theft tag body further comprises a bottom plate, two contacts are arranged on the bottom plate and connected through the connecting line, when the connecting line is disconnected, the alarm module 3 gives an alarm, and the specific form can be that a controllable switch element exists in the anti-theft tag, and when the connecting line is disconnected, the controllable switch element controls the alarm module 3 to give an alarm. The anti-theft label body also comprises a test key, the alarm module 3 alarms when the test key is pressed down, the specific form can be that a controllable switch element exists in the anti-theft label, and the switch element controls the alarm module 3 to alarm when the test key is pressed down.

When the anti-theft label is arranged for defense, the anti-theft label body is arranged on a commodity through the bottom plate, and if the anti-theft label is illegally detached or cut, the alarm module 3 can give an alarm. If the anti-theft label on the commodity is not demagnetized by the demagnetizer of the cash desk, the Electronic Article Surveillance (EAS) system can work when passing through the security gate of a shopping mall due to the existence of the acousto-magnetic soft label, so that the security gate gives an alarm. When goods normally settle accounts, after demagnetizing the soft acoustomagnetic label through the demagnetizer of the cashier desk, the output state of the TMR sensor changes, the output signal can make the anti-theft label body lose efficacy through the on-off of the control power supply part or the mute control part of the alarm device (such as a buzzer), the alarm can not be sent out even if the power supply part is detached or the wire is cut, and the alarm can not be triggered when the magnetism of the soft acoustomagnetic label disappears.

Referring to fig. 3, fig. 3 is a circuit diagram according to an embodiment of the invention. VBATS + is connected with the positive electrode of the battery, VBATS-is connected with the negative electrode of the battery, and BZ + and BZ-are connected with the buzzer. Before the anti-theft tag body is not installed on the bottom plate, a ground loop is not communicated, the anti-theft tag does not work, the bottom plate is installed on the commodity, two contacts B 'and C' are arranged on the bottom plate and are connected through a lead, when the anti-theft tag body is installed on the bottom plate, the contact SW-B '(NMOS pipe control contact) and the contact SW-C' on the anti-theft tag body are respectively communicated with the contact B 'and the contact C', and the anti-theft tag is in a defense state. Because the contact B ' and the contact C ' on the bottom plate are connected through the conducting wire, the contact B ' is in a grounding state, the first pin of the NMOS tube Q2 ' is at a low level, at the moment, the NMOS tube Q2 ' is not conducted, the buzzer does not give out alarm sound, when the bottom plate is artificially and illegally dismounted or the conducting wire between the contact B ' and the contact C ' is cut off, the contact B ' and the contact C ' are disconnected, at the moment, the control end of the 1 st pin of the NMOS tube Q2 ' becomes high level, the NMOS tube Q2 ' is conducted, and the buzzer is electrified to give an alarm. A58K acousto-magnetic soft label is arranged beside the TMR sensor U2 ', the No. 2 pin of the TMR sensor U2 ' is connected with the No. 2 pin of the NMOS tube, and since the TMR sensor U2 ' can sense a magnetic object, the No. 2 pin outputs a high level when the magnetic object is not sensed, and outputs a low level when the magnetic object is sensed. Therefore, when the acousto-magnetic soft tag is magnetic, the 2 nd pin of the TMR sensor U2' outputs a low level. When the goods normally pass through the cashier desk, the acousto-magnetic soft label is demagnetized by the demagnetizer, so that the 2 nd pin of the TMR sensor U2 'outputs a high level, and the NMOS tube Q2' is in a non-operating state, so that the alarm function is lost. Because the sound magnetic soft label is demagnetized, the alarm can not be sent out when the shopping mall safety door is passed. The switch SW-A ' can be used for testing whether the anti-theft label works normally, and when the switch SW-A ' is pressed, the first pin level of the NMOS tube Q2 ' is changed to be high, and the buzzer can give an alarm.

Referring to fig. 4, fig. 4 is a circuit diagram of another embodiment of the present invention. VBATS is connected with the positive electrode of the battery, and BZ + and BZ-are connected with the buzzer. The bottom plate is arranged on a commodity, the bottom plate is provided with a contact B and a contact C, the two contacts are connected through a conducting wire, when the anti-theft label body is arranged on the bottom plate, the contact SW-B and the contact SW-C on the anti-theft label body are respectively communicated with the contact B and the contact C, and at the moment, the anti-theft label is in a defense state. The states of the contact B and the contact C are judged by reading the charging and discharging time of a peripheral RC network connected with the contact B through a 1 st pin of the MCU U1, when the anti-theft tag body is installed on the bottom plate, the MCU U1 remembers the current RC time, and the RC time is changed no matter the contact B is disconnected with the contact SW-B, the contact C is disconnected with the contact SW-C or the contact B is disconnected with the contact C, so that the MCU U1 controls a buzzer to give an alarm, and controls an LED lamp D6 to flash quickly to give an alarm, and therefore the anti-theft tag can be prevented from being illegally detached. Be provided with the soft label of 58K reputation magnetism next door on TMR sensor U2, when goods normally receive silver through the cashier's desk, the soft label of reputation magnetism is by the demagnetization, thereby makes TMR sensor U2 output high level, this moment MCU U1's the 6 th foot becomes high level by the low level, no matter this moment MCU U1's the 1 st foot how changes, MCU U1 can not control bee calling organ and LED lamp report to the police, and the soft label of reputation magnetism also can not trigger the warning after the market safety door by the demagnetization. The embodiment also comprises an upgrading seat JP7, which is convenient for subsequent upgrading.

In summary, the invention combines the new generation of magnetic sensor technology with the electronic article anti-theft system, because the TMR element has the characteristics of micro power consumption, high resolution, large dynamic range and the like, the TMR sensor and the acoustic magnetic soft tag are integrated in the active hard tag, before the article is legally checked out, the TMR state ensures that the anti-theft tag is effective, the anti-theft tag can cause the self alarm of the anti-theft tag according to the change of the adopted sensor state, and the alarm of the safety door is caused when the article illegally passes through the exit door of a shopping mall. After legal checkout, under the action of anti-theft demagnetizing equipment configured at a cashier desk of a shopping mall, the magnetic field intensity of the acoustic magnetic soft tag is changed, so that the TMR state is changed, and the anti-theft tag is invalid, thereby not only maintaining the anti-theft function and reliability of the acoustic magnetic soft tag in the original electronic goods anti-theft system, but also increasing the anti-theft function (such as wire cutting alarm, illegal removal alarm and the like) of the active hard tag, and leading the functions of the anti-theft tag to be richer and the reliability to be higher; the cost of the anti-theft tag is reduced, the disposable active anti-theft hard tag can be realized, and the anti-theft capability of the commodity is enhanced and the self-service purchase mode is adapted; meanwhile, the anti-theft label after demagnetization failure can be reused after external magnetization.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.