CN106652294B - Burglary-resisting system decoder detection device - Google Patents
Burglary-resisting system decoder detection device Download PDFInfo
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- CN106652294B CN106652294B CN201611195762.7A CN201611195762A CN106652294B CN 106652294 B CN106652294 B CN 106652294B CN 201611195762 A CN201611195762 A CN 201611195762A CN 106652294 B CN106652294 B CN 106652294B
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- circuit
- detection device
- burglary
- detection
- resisting system
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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
- G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
- G08B13/2468—Antenna in system and the related signal processing
- G08B13/2477—Antenna or antenna activator circuit
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The present invention provides a kind of burglary-resisting system decoder detection devices, including decoding deck and first to receive circuit, and decoding deck is equipped with the first receiving coil；First centre frequency for receiving circuit is the pulse center frequencies of the decoder, first, which receives circuit, includes successively cascade bandwidth-limited circuit, amplifying circuit and compare output circuit, first receiving coil is connected with the input terminal of bandwidth-limited circuit, the output end for comparing output circuit is connected with built-in timer and with the controller for capturing tally function, the detection device is additionally provided with zero-detection circuit and alternating current transforming circuit, the input terminal of the zero point Acquisition Circuit is connected with the output end of alternating current transforming circuit, the output end of the zero-detection circuit is connected with controller.The present invention can easily with accurately play the synchronous function of detection decoder host transmitter phase, avoid rejected product from dispatching from the factory, reduction debugging work load, while being also accompanied by and testing decoding energy amplitude guarantees the consistency of plant out.
Description
Technical field
The invention belongs to the fields EAS, more particularly, to burglary-resisting system decoder detection device.
Background technique
EAS system mainly consists of three parts: detector (Sensor), decoder (Deactivator) and electronic tag
(Electronic Label and Tag).Electronic tag is divided into soft label and hard label, the softer mark of hard label nonrecurring cost
Label are high, but may be reused.Hard label must be equipped with special nail-fetching device, be chiefly used in the article that clothing is soft, easily penetrates.
Cost is relatively low for soft label, is adhered directly to be punctured with decoder without reusable compared on " hard " commodity；Decoder is more
For contactless device, there is certain decoding height, when cashier's cash register or pack, electronic tag need not contact demagnetization region
That is decodable code.Market is taken away without decoded commodity, in device device (mostly gate-shaped) after testing, alarm can be triggered, thus
Cashier, customer and market security personnel is reminded to handle in time.
AM decoder functions principle is mainly made of transmitting coil and receiving coil, is sent out from transmitting coil to receiving coil
A cycle 58KHz pulse signal is penetrated, make to emit and generates a field scan area between receiving.And anti-theft tag is practical former
It is " LC " clapp oscillator (referring to that inductance coil and capacitor compose in parallel) in reason, being made of special process makes itself and decoding
Device equally generates the radio signal of a 58KHz.Due to the oscillation action of this radio signal, make between anti-theft antenna
One variation occurs for electromagnetic field scanning area, that is, is made into the signal that can produce alarm using this variation.Decoding
The decoding deck of device is installed on the table top of cashier, periodically emits the detection pulse of 58KHz, when detecting label signal
When, a decoded signal is issued, the pulse signal of a high voltage mainly occurs, the voltage that this pulse signal occurs can be high
Up to more than 300 volts, the capacitor inside soft label relies on this voltage breakdown, and the capacitor of soft label is after breakdown with regard to phase
When being in open-circuit condition in its inductor, so can not just generate signal.Hard label will not be killed since capacitor is high pressure resistant,
It can reuse, mainly be unlocked with lockaid gun.
The decoder of different manufacturers production, although that's about the size of it for principle, details is slightly different, such as transmitting detection arteries and veins
The opportunity of punching is just different, causes the transmitting of the equipment to fall in the reception window of other equipment, causes to report by mistake.This problem one
The after-sale service personnel of straight puzzlement company, cause the interference between similar product, the wrong report of equipment, the difficulty of debugging.
There is difference on the opportunity of the decoder transmitting detection pulse of different manufacturers production, and sanctified by usage is " transmitting zero point ", is
Most of detection devices on the market are adapted to, the transmitting zero point of equipment is adjustable, and it requires production or even after sale
Installation personnel can skillfully adjust transmitting zero point, and required measuring instrument uses oscillograph substantially, by adjusting factory is guaranteed
Zero point be it is known, it is synchronous, but its operation is more troublesome.
Summary of the invention
It is an object of the invention to overcome deficiency in the prior art, a kind of burglary-resisting system decoder detection device is provided,
Decoder can be quickly and easily detected, rejected product is avoided to dispatch from the factory, reduces debugging work load.For this purpose, the present invention is using following
Technical solution:
Burglary-resisting system decoder detection device, it is characterised in that it includes decoding deck, and decoding deck is equipped with the first receiving coil；
The detection device is provided with the first reception circuit, and the described first centre frequency for receiving circuit is in the pulse of the decoder
Frequency of heart, the first reception circuit is including successively cascade bandwidth-limited circuit, amplifying circuit and compares output circuit, wherein
First receiving coil is connected with the input terminal of bandwidth-limited circuit, compares the output end of output circuit and built-in timer and has
The controller for capturing tally function is connected, and the detection device is additionally provided with zero-detection circuit and alternating current transforming circuit, institute
The input terminal for stating zero point Acquisition Circuit is connected with the output end of alternating current transforming circuit, the output end of the zero-detection circuit and control
Device processed is connected.
The detection device is equipped with the support construction of frequency element, and the decoding deck is additionally provided with the second receiving coil, described
Detection device is provided with the second reception circuit, and described second receives the centre frequency of circuit as the decoding center frequency of the decoder
Rate, the second reception circuit is including successively cascade bandwidth-limited circuit, amplifying circuit and compares output circuit, wherein second
Receiving coil is connected with the input terminal of bandwidth-limited circuit, and the output end for comparing output circuit is connected with the controller.
Described first, which receives circuit, zero-detection circuit, alternating current transforming circuit and controller, is arranged in shielding box.
Described first, which receives circuit, zero-detection circuit, alternating current transforming circuit, the second reception circuit and controller setting, exists
In shielding box.
The support construction can be arranged on bar to up and down adjustment, and the detection device is provided with the latch fitting of support construction.
The support construction is also rotatably arranged on bar, to adjust the horizontal position of support construction.
Scale is set on the bar.
Support zone in the support construction for plastic part or has hole.
The detection plate and bar are arranged on bottom case.
The detection device is additionally provided with warning device, and the warning device is connected with the controller；The alternating current becomes
There are also the second tunnels to export for volt circuit, the power supply as detection device operation.
The present invention can easily with accurately play the synchronous function of detection decoder host transmitter phase, avoid not conforming to
The factory of lattice product, reduces debugging work load, while being also accompanied by and testing decoding energy amplitude, guarantees the consistency of plant out.
Detailed description of the invention
Fig. 1 is the circuitry block schematic diagram of embodiment provided by the present invention.
Fig. 2 is the structural schematic diagram of embodiment provided by the present invention.
Fig. 3 is the Structure explosion diagram of embodiment provided by the present invention.
Specific embodiment.
Referring to attached drawing.Burglary-resisting system decoder detection device provided by the present invention includes decoding deck 101, and decoding deck 1 is set
There is the first receiving coil L1；The detection device is provided with the first reception circuit, and the centre frequency of the first reception circuit is
The pulse center frequencies of the decoder, described first, which receives circuit, includes successively cascade bandwidth-limited circuit, amplifying circuit
With compare output circuit, wherein the first receiving coil is connected with the input terminal of bandwidth-limited circuit, compare the output of output circuit
It holds with built-in timer and is connected with the controller for capturing tally function, the detection device is additionally provided with zero-detection circuit
And alternating current transforming circuit, the input terminal of the zero point Acquisition Circuit are connected with the output end of alternating current transforming circuit, the zero point
The output end of detection circuit is connected with controller.Drawing reference numeral 1 is controller, and drawing reference numeral 2 is transformer, and drawing reference numeral 4 is
Filter.
The detection device is additionally provided with the support construction 102 of frequency element, and the decoding deck is additionally provided with the second reception line
Circle, the detection device are provided with the second reception circuit, and the described second centre frequency for receiving circuit is the solution of the decoder
Code centre frequency, the second reception circuit is including successively cascade bandwidth-limited circuit, amplifying circuit and compares output circuit,
Wherein the second receiving coil is connected with the input terminal of bandwidth-limited circuit, compare output circuit output end and the controller phase
Even.
There are also the second tunnels to export for the alternating current transforming circuit, as the power supply of detection device operation, the alternating current transformation electricity
The second tunnel output on road is connected to DC power supplier, and the power units such as controller are connected with DC power supplier.DC power supply
It uses 79L12 voltage stabilizing chip to provide positive-negative power for operational amplifier in module, uses LM2675 DC-DC power source chip for control
The power supply such as device processed and LED light buzzer (warning device).
The detection device is additionally provided with warning device 3, can be used buzzer and alarm lamp, the alarm and described
Controller is connected.
The detection device is additionally provided with communication module, and the communication module is connected by 232 serial ports with the controller,
Result can be will test to transmit outward, wirelessly or non-wirelessly communication module can be used in communication module.
The detection device is additionally provided with the human-computer interaction module with display screen, the human-computer interaction module and the control
Device is connected.Human-computer interaction part can have there are three LED light 51, and a key 52 terminates sentencing for last time by key pressing every time
It is disconnected, then carry out new primary judgement.
When detection, hard label is can be used with energy Reusability in the label.
Compare and LM393 comparator can be used in output circuit.
New Tang M0 series NUC160 single-chip microcontroller can be used in controller, is adopted using the capture tally function of its built-in timer
Integrate and receive pulse number of the circuit in specific time using alternating current as the first of reference zero, with number of pulses number to sentence
Whether disconnected to synchronize according to detection zero point, then with hard label test decoding energy, (decoding energy threshold value has been adjusted to suitable
Value), comparator exports pulse train, judgement is realized using interrupt mode is captured, eventually by RS232 serial ports and host to be tested
Communication, which is realized, checks inner workings.
In the present invention, above bandwidth-limited circuit, amplifying circuit and compare output circuit, zero point Acquisition Circuit, straight
The conventional circuit with corresponding function can be used in galvanic electricity source module, human-computer interaction module, communication module.Drawing reference numeral 6 is
Master switch.
If the present invention is applied to the detection of sound magnetic detection system AM decoder, pulse center frequencies are generally 58KHz,
Decoding centre frequency is 3KHz.If the present invention is applied to the detection of RF detection system RF decoder, pulse center frequencies
Generally 8.2MHz.
The detection device is provided with shielding box 100, and described first receives circuit, zero-detection circuit, alternating current transformation electricity
Road, second receive circuit, DC power supplier and controller and are arranged in shielding box 100.
The support construction 102 can be arranged in up and down adjustment on bar 103, and the detection device is provided with support construction
102 latch fitting, for example, support construction locks support construction on bar 103 after the sliding of bar up and down adjustment, with bolt and nut 105.
Scale is set on the bar 103 to facilitate the operation of adjustment position.Support zone in the support construction is plastic part or tool
There is hole 106, to avoid interference and shielded signal when detecting.
The support construction is also rotatably arranged on bar, to adjust the horizontal position of the support construction 102, namely
The horizontal position for placing frequency element on the support structure is adjusted, the support construction can be connected by its anchor ear with bar, by
The bolt and nut 105 is locked.
Bar 103 and decoding deck 101 may be provided on bottom case 104.
Operating process is as follows:
1, decoder host connecting line to be measured is connected, is powered to host, is powered to tooling.
2, the back master switch 6 of test fixture is pressed, red LED power lights are lighted, and are at this time standby mode.
3, decoder host power supply to be measured is opened, and serial port connecting wire is connected.
4, testing button 52 is pressed, takes hard label to embed in next 5S in tooling and tests alarm on decoding deck, it is green
Color indicator light is lighted, buzzer yowl 3S, indicates qualified (synchronous, decoding energy, communication test passes through)
The underproof situation of test result there are several types of
A, emit asynchronous, buzzer sending drop~drop~drop~~drop~drop~drop alarm sound, same to alarm
Lamp is bright, extinguishes after 3S, and buzzer is not named.
B, transmitting is synchronous but decoding energy is not detected, and buzzer issues drop~drop~~drop~drop alarm sound,
Alarm lamp is bright simultaneously, extinguishes after 3S, buzzer is not named.
C, transmitting is synchronous and detects decoding energy, but communication failure, and buzzer issues drop~~drop alarm sound,
Alarm lamp is bright simultaneously, extinguishes after 3S, buzzer is not named.
It is analyzed by test result, detection can be functioned well as according to the test fixture obtained designed by design scheme
The synchronous function of decoder host transmitter phase, while being also accompanied by and testing decoding energy amplitude, it can communicate and check internal work
Make state, greatly facilitates scheduling and planning personnel.
Above-mentioned specific embodiment is used to illustrate the present invention, is merely a preferred embodiment of the present invention, rather than to this
Invention is limited, and within the spirit of the invention and the scope of protection of the claims, to any modification of the invention made, is equal
Replacement, improvement etc., fall within protection scope of the present invention.
Claims (10)
1. burglary-resisting system decoder detection device, it is characterised in that it includes decoding deck, and decoding deck is equipped with the first receiving coil；Institute
It states detection device and is provided with the first reception circuit, the described first centre frequency for receiving circuit is the pulse center of the decoder
Frequency, the first reception circuit is including successively cascade bandwidth-limited circuit, amplifying circuit and compares output circuit, wherein the
One receiving coil is connected with the input terminal of bandwidth-limited circuit, compares the output end of output circuit and built-in timer and has and catches
The controller for catching tally function is connected, and the detection device is additionally provided with zero-detection circuit and alternating current transforming circuit, described
The input terminal of zero point Acquisition Circuit is connected with the output end of alternating current transforming circuit, the output end of the zero-detection circuit and control
Device is connected；
Circuit is received specific using alternating current as the first of reference zero using the capture tally function acquisition of its built-in timer
Pulse number in time, using number of pulses number as judgment basis detect zero point whether synchronize.
2. burglary-resisting system decoder detection device as described in claim 1, it is characterised in that the detection device is equipped with frequency
The support construction of element, the decoding deck are additionally provided with the second receiving coil, and the detection device is provided with the second reception circuit, institute
The centre frequency for stating the second reception circuit is the decoding centre frequency of the decoder, and described second, which receives circuit, includes successively grade
The bandwidth-limited circuit of connection, amplifying circuit and compare output circuit, wherein the input of the second receiving coil and bandwidth-limited circuit
End connection, the output end for comparing output circuit are connected with the controller.
3. burglary-resisting system decoder detection device as described in claim 1, it is characterised in that described first receives circuit, zero point
Detection circuit, alternating current transforming circuit and controller are arranged in shielding box.
4. burglary-resisting system decoder detection device as claimed in claim 2, it is characterised in that described first receives circuit, zero point
Detection circuit, alternating current transforming circuit, second receive circuit and controller setting in shielding box.
5. burglary-resisting system decoder detection device as claimed in claim 2, it is characterised in that the support construction can go up downward
It saves land and is arranged on bar, the detection device is provided with the latch fitting of support construction.
6. burglary-resisting system decoder detection device as claimed in claim 5, it is characterised in that the support construction is also rotatable
Ground is arranged on bar, to adjust the horizontal position of support construction.
7. burglary-resisting system decoder detection device as claimed in claim 5, it is characterised in that scale is arranged on the bar.
8. burglary-resisting system decoder detection device as claimed in claim 2, it is characterised in that the support in the support construction
Plastic part is in position or has hole.
9. burglary-resisting system decoder detection device as claimed in claim 2, it is characterised in that the detection plate and bar are respectively provided with
On bottom case.
10. burglary-resisting system decoder detection device as described in claim 1, it is characterised in that the detection device is additionally provided with
Warning device, the warning device are connected with the controller；There are also the second tunnels to export for the alternating current transforming circuit, as detection
The power supply of device operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611195762.7A CN106652294B (en) | 2016-12-22 | 2016-12-22 | Burglary-resisting system decoder detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611195762.7A CN106652294B (en) | 2016-12-22 | 2016-12-22 | Burglary-resisting system decoder detection device |
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| Publication Number | Publication Date |
|---|---|
| CN106652294A CN106652294A (en) | 2017-05-10 |
| CN106652294B true CN106652294B (en) | 2019-04-30 |
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ID=58834602
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611195762.7A Active CN106652294B (en) | 2016-12-22 | 2016-12-22 | Burglary-resisting system decoder detection device |
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| CN (1) | CN106652294B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108470415A (en) * | 2018-03-12 | 2018-08-31 | 宁波讯强电子科技有限公司 | A kind of frame-type acoustic magnetic anti-theft label decoder and method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4160209A (en) * | 1977-07-01 | 1979-07-03 | Thompson Thomas F | Resonant circuit excitation method and apparatus |
| DE60143429D1 (en) * | 2000-05-08 | 2010-12-23 | Checkpoint Systems Inc | RADIO FREQUENCY DETECTION AND IDENTIFICATION SYSTEM |
| US6812843B2 (en) * | 2002-03-11 | 2004-11-02 | Sensormatic Electronics Corporation | Auto-phasing synchronization for pulsed electronic article surveillance systems |
| JP4602811B2 (en) * | 2005-03-24 | 2010-12-22 | グンゼ株式会社 | Tag detection device |
| CA2621490C (en) * | 2005-09-09 | 2014-12-16 | Sensormatic Electronics Corporation | Eas system providing synchronized transmission |
| CN2862213Y (en) * | 2005-11-04 | 2007-01-24 | 深圳蓉华电子有限公司 | Dactivate,activate and detecting device for electromagnetic wave anti-theft label |
| CN101393595B (en) * | 2007-09-19 | 2010-04-21 | 深圳蓉华电子有限公司 | Electronic label detecting method for EAS |
| US9251680B2 (en) * | 2014-02-24 | 2016-02-02 | Tyco Fire & Security Gmbh | Pulse transmission synchronization |
| CN205810089U (en) * | 2016-07-19 | 2016-12-14 | 武汉奇点美信电子有限公司 | A kind of sound-magnetic electronic burglary-resisting system sync detection device |
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2016
- 2016-12-22 CN CN201611195762.7A patent/CN106652294B/en active Active
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| CN106652294A (en) | 2017-05-10 |
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