CN109658657A - Signal generating method, analysis method, detection method, relevant device and system - Google Patents
Signal generating method, analysis method, detection method, relevant device and system Download PDFInfo
- Publication number
- CN109658657A CN109658657A CN201811509873.XA CN201811509873A CN109658657A CN 109658657 A CN109658657 A CN 109658657A CN 201811509873 A CN201811509873 A CN 201811509873A CN 109658657 A CN109658657 A CN 109658657A
- Authority
- CN
- China
- Prior art keywords
- signal
- unit
- frequency
- transmitter
- signal generating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The invention discloses a kind of signal generating method, analysis method, detection method, relevant device and systems, signal generating method includes: generation modulated signal, the modulating frequency of the modulated signal is made of at least two frequencies, after modulated signal is carried out power amplification, is launched by antenna.Signal analysis method includes: the response signal for receiving anti-theft tag；After amplifying, filter and identifying to response signal, alarm signal is issued；Identify specifically: judge whether the feature through filtered signal is corresponding with the frequecy characteristic of the modulating frequency of modulated signal.Detection method includes signal generating method and signal analysis method.Apparatus and method for is corresponding, and system includes relevant device.By the Frequency-variable Modulation technology of the design, the law characteristic of anti-theft tag response can be increased substantially, the anti-interference ability of anti-theft detection system is effectively improved.
Description
Technical field
The present invention relates to radio frequency electric commodity anti-thefts to detect the field (EAS), especially a kind of signal generating method, analysis side
Method, detection method, relevant device and system.
Background technique
Mounting means is commodity anti-theft (eas system-Electronic Article on the door
Surveillance, EAS) important application system (being directed to radio frequency detection mode).Refer to a transmitting antenna frame and one on the door
Branch receiving antenna frame forms a channel, forms the basic unit of system, can be extended to more antenna holders and form multiple inspections
Channel.Transmitter and receiver on the door is to work independently.
Transmitter is mainly made of oscillator, power amplifier, antenna and synchronous circuit (optional).Oscillator generates one
Scan frequency, such as centre frequency 8.2MHz, sweep bandwidth 1MHz, by power amplifier to antenna.When more transmitter work,
It needs to synchronize, i.e., master transmitter exports scan frequency, and secondary transmitter receives this signal, by power amplifier to antenna.It is secondary
Transmitting oscillator does not work, and guarantees that every transmitter all with the same phase of frequency, that is, synchronizes with this.
Receiver is mainly by antenna, high-frequency reception (containing filter and amplification) circuit, low frequency filtering amplifying circuit and discriminator group
At.Circuit board for receiving passively works in the state that transmitter is corresponding, such as 8.2MHz, 180Hz.When transmitter is changed to
When 6.8MHz, 160Hz, receiver is also required to be adjusted accordingly.
For commodity anti-theft signal detection, principle are as follows: transmitter issues a modulated signal (continuous signal), the modulation
Signal has the centre frequency, sweep bandwidth and modulating frequency of setting, then by modulated signal by being sent out after power amplification by antenna
It is shot out；Anti-theft tag can answer modulated signal when passing through signal detection door, generate response signal (i.e. generation resonance), receive
After machine is by carrying out high-pass filtering amplification, detection, low-pass filtering amplification, identification to response signal, alarm is issued.
But there are the following problems for existing design: transmitter modulating frequency is single, in use, can touch crowd
More interference sources, each interference source can frequently generate highdensity, multiband interference signal, cope with by single modulating frequency
These interference signals, the probability scored a lucky hit is very high, and its is easy to happen false alarm, and system rejection to disturbance limitation is very
Greatly.
Summary of the invention
Goal of the invention of the invention is: in view of the above problems, provide a kind of commodity anti-theft signal generating method,
Transmitter, analysis method, receiver, detection method and system, to improve the anti-interference ability in commodity anti-theft detection.
The technical solution adopted by the invention is as follows:
A kind of electronic article surveillance signal generating method is applied to radio frequency electric burglary protection system for commodities (EAS), including following step
It is rapid:
Step1: modulated signal is generated；
Step2: after carrying out power amplification to modulated signal, launched by antenna；
Wherein, the modulating frequency of the modulated signal is made of at least two frequencies.Obviously, at least two frequencies is every
It is different between one frequency.
Further, it is not all the same to constitute sequence of each frequency of the modulating frequency within each period.
Further, the combination of frequency for constituting the modulating frequency is 360Hz+370Hz.
A kind of electronic article surveillance signal transmitter, including sequentially connected signal generating unit, power amplification unit and
Antenna, for generating modulated signal, power amplification unit is used to carry out power amplification to modulated signal signal generating unit, then leads to
Antenna is crossed to launch；The modulating frequency of the signal generating unit modulated signal generated is made of at least two frequencies.
Further, signal transmitter further includes the first synchronization unit of connection signal generating unit, for issuing synchronization
Signal.So-called synchronization signal, as another way modulated signal, the road modulated signal for realizing in detection system, believe by modulation
The synchronization of number (scanning signal).
A kind of electronic article surveillance signal generating system, including one it is above-mentioned include the first synchronization unit signal transmitter
It further include several secondary transmitters, each secondary transmitter includes sequentially connected second synchronization unit, power as master transmitter
Amplifying unit and antenna；Several secondary transmitters are divided into several grades, wherein the second synchronization unit of first order pair transmitter
Input terminal is connected with the first synchronization unit output end, and to obtain synchronization signal, the second of the secondary transmitter of other grades synchronizes list
The input terminal of member is all connected with the output end of the second synchronization unit of a grade pair transmitter thereon, forms cascaded structure；Each
The synchronization signal that second synchronization unit obtains is after power amplification unit carries out power amplification, then is transmitted through antenna.Exist
In one signal generating system, master transmitter will be believed while emitting modulated signal (or being scanning signal) by antenna
The modulated signal that number generating unit generates is also sent to secondary transmitter, which is synchronization signal, and secondary transmitter connects
It receives synchronization signal and is transmitted to antenna after power amplifier amplifies, launched by antenna, secondary transmitter is sent out not comprising signal
The signal generating unit of raw unit or secondary transmitter does not work, in this manner it is ensured that in the same signal generating system, respectively
The adjustment signal that transmitter is issued realizes the synchronization of signal with the same phase of frequency.
A kind of electronic article surveillance signal analysis method is applied to radio frequency electric burglary protection system for commodities (EAS), including following
Step:
Step1: the response signal of anti-theft tag is received；
Step2: after amplifying, filter and identifying to response signal, alarm signal is issued；
Wherein, the identification in Step2 specifically: judge the feature through filtered signal whether in above-mentioned signal generating method
The frequecy characteristic of the modulating frequency of modulated signal is corresponding.
A kind of electronic article surveillance signal receiver, including sequentially connected antenna, amplifying unit, filter unit, identification
Unit and alarm unit；Antenna receives the response signal of anti-theft tag after amplifying unit, filter unit, passes through discriminating unit
Identified, alarm unit is triggered after identification passes through and issues alarm signal；It is characterized in that, the discriminating unit is for judging
Whether the feature through filtered signal is corresponding with the frequecy characteristic of the modulating frequency of the modulated signal of above-mentioned signal transmitter.
A kind of electronic article surveillance detection method is applied to radio frequency electric burglary protection system for commodities (EAS), including above-mentioned electronics
Commodity anti-theft signal generating method and above-mentioned electronic article surveillance signal analysis method.
A kind of electronic article surveillance detection system, including above-mentioned electronic article surveillance signal transmitter and above-mentioned electronic goods
Anti-theft signal receiver.
A kind of electronic article surveillance detection system, including above-mentioned electronic article surveillance signal generating system and above-mentioned electronics
Commodity anti-theft signal receiver.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, by using the Frequency-variable Modulation technology of the design, the law characteristic of anti-theft tag response can be increased substantially, and it is outer
Boundary's interference signal fit like a glove frequency and regular frequency conversion a possibility that it is at a fairly low, therefore, can effectively improve anti-theft detection system
Anti-interference ability.
2, the frequency multiplication Frequency-variable Modulation technology that the design uses can receive the regular situation of detection not changing existing system
Under, the regular feature of response signal is improved, and then can improve in the case where not changing existing response signal decision rule
The anti-interference ability of system.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is response results simulation drawing corresponding to different modulated signals.
Fig. 2 is one embodiment of electronic article surveillance detection system.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract), unless specifically stated,
It is replaced by other equivalent or with similar purpose alternative features.That is, unless specifically stated, each feature is a series of
An example in equivalent or similar characteristics.
Centre frequency, sweep bandwidth, modulating frequency, transmission power are several important indicators of transmitter, wherein center frequency
Rate, sweep bandwidth and modulating frequency are the main indicators of modulated signal.When installation, these parameters are first set, then debug receiver.
Under normal circumstances, using factory state.When serious interference, these parameters are reset:
1) centre frequency.8.2MHz is international value, if one large-scale sales field businessman is numerous, system installation number is too big,
It certainly will cause to influence each other.Adjustable is other frequencies, such as 6.8MHz, becomes wrong frequency.Wrong frequency can be avoided thoroughly with frequency
Interference, but label frequency is needed replacing, poor universality.
2) sweep bandwidth.It is generally set in 900-1000KHz, when environmental disturbances, may be collapsed to 700-800 KHz even
It is smaller.Label frequency 8.0-8.4MHz, so the too small part labels that may cause of sweep length can not be detected normally.
3) modulating frequency.Generally 180Hz, it is adjustable be 160, the frequencies, referred to as frequency hopping such as 170Hz, it changes scanning
The duration of time.As 180Hz corresponds to 5.6ms a cycle, it is meant that label detection signal be 5.6ms periodically it is regular go out
Existing, interference signal is relatively generally unsatisfactory for this rule in a jumble, excludes its influence with this.Frequency hopping being capable of phase between reduction system
Mutually interference, but co-channel interference cannot be thoroughly avoided as wrong frequency.Benefit is not have to dehorn label, and versatile, actual use is most
A kind of universal technological means.
4) transmission power.It can just be adjusted under extreme case.
As illustrated in fig. 1 and 2, present embodiment discloses a kind of electronic article surveillance signal generating methods, are applied to radio frequency electrical
The signal transmitter of sub- burglary protection system for commodities (EAS), comprising the following steps:
Step1: modulated signal is generated；
Step2: after carrying out power amplification to modulated signal, launched by antenna；
Wherein, the modulating frequency of modulated signal is made of at least two frequencies.
Existing modulating frequency at work, only one fixed frequency, though using frequency hopping, each task
When, a fixed frequency is also only selected, such as being provided with 160Hz, 170Hz and 180Hz(can also further include other frequencies)
Frequency point, the modulating frequency of previous moment are 180Hz, now carry out frequency hopping processing, modulating frequency is adjusted to 170Hz.And it is of the invention
The frequency for constituting modulating frequency includes two or more frequencies, such as 160Hz+170Hz, 180Hz+512Hz, 160Hz+
360Hz+512Hz etc., in this way, regular more complicatedization of response signal caused by anti-theft tag, more characteristic can be made.Mesh
The preceding scheme for only selecting a frequency, for being applied to density ratio occur more frequently for the place of interference signal, interference life
In probability it is quite high, be extremely easy to happen false alarm.And frequency conversion (at least two frequencies form modulating frequency) is used, antitheft mark
The regularity that the response signal of label occurs is stronger, and the frequency of interference signal may be matched to a kind of frequency, but be matched to simultaneously
The probability of two kinds of frequencies and the probability of continuous coupling to two kinds of frequencies are almost impossible, while interference signal will be also matched with just
Regularity (time interval, response time, number of responses between each response signal generated corresponding to different frequency of normal response signal
Amount etc.) it is likely to judge by accident, therefore, Frequency-variable Modulation technology of the invention can greatly improve the accuracy of antitheft detection,
The occurrence of by the way that corresponding reception mechanism is arranged, interference signal can be effectively filtered out, prevent erroneous judgement.
In order to increase the law characteristic of response signal, each frequency of modulating frequency is constituted in each period (i.e. comprising one group
Constitute frequency duration, the sequence requirement of no frequency) in sequence can be inconsistent.Such as the group of modulating frequency becomes 360Hz+
370Hz, sequence in one cycle is 360Hz, 370Hz, and the sequence within next period is that 370Hz, 360Hz(are certain,
Can also each period frequency order it is all the same), other different frequencies and the combination of frequency of different number and so on.In this way
Benefit be that, keep response signal quantity it is constant in the case where, further increase the feature complexity of response signal, into
And the coupling of interference signal is further prevented, convenient for filtering out external disturbance, increase the anti-interference ability of system.
In the specific implementation, it can select frequency multiplication converter technique, i.e. selection 360Hz+370Hz(or 350Hz+360Hz,
Frequency near the 360Hz such as 360Hz+365Hz) combination frequency to constitute modulating frequency.With modulating frequency general at present
For (180Hz), one scan period is about 5.56ms, using 360Hz+370Hz(or 350Hz+360Hz, 360Hz+
The scan period (needing to be calculated with two frequencies) of combination frequency 365Hz) is about 5.5ms, close with using 180Hz,
Such benefit is that, does not have to carry out more receiver end identification rule (such as receiving the overall time of scan period response)
Change or resets (it should be noted that, because being in continuous motion state, being generated steady when anti-theft tag is by detection door
The effective time of provisioning response be only about 50-200ms, the response signal of this period be it is effective, reliable, during this period of time,
Response signal in one response cycle (corresponding to the scan period) does not have reference value, needs in continuous multiple periods
Response signal carries out whole identification, it is therefore desirable to count the response signal of enough periodicities to be identified, it is common, for
Amount of cycles needed for the identification of response signal is at least 10).Using other combination of frequencies, it also can increase the rule of response signal
Feature is restrained, but may need to be modified identification rule of the receiver to response signal, such as resets triggering alarm
The lasting width of the response impulse quantity, response impulse spaced features or the response impulse that need.
Present embodiment discloses the signal transmitters in a kind of radio frequency electric burglary protection system for commodities (EAS) comprising successively
Signal generating unit, power amplification unit and the antenna of connection, signal generating unit is for generating modulated signal, power amplification list
Member to modulated signal progress power amplification, then by antenna for launching；Wherein, signal generating unit modulation generated
The modulating frequency of signal is made of at least two frequencies.
In one embodiment, signal generating unit is made of oscillator.Further, frequency is modulated for the ease of adjusting
Rate, to cope with different usage scenarios, oscillator is also connected with frequency adjustment switch, for adjusting modulating frequency.In a reality
It applies in example, frequency adjustment switch selects programmable logic array (such as single-chip microcontroller, DSP).
To cope with relatively large application scenarios, the signal transmitter of above-described embodiment further includes being connected to signal generating unit
First synchronization unit, for issuing synchronization signal.The synchronization signal is identical as the modulated signal of signal generating unit.It issues and synchronizes
The purpose of signal is in order to be sent to other transmitters, only to be controlled by a transmitter entire in the same detection system
The adjustment signal of detection system guarantees with the same phase of frequency.
Preferably.In the modulated signal that signal generating unit generates, each frequency of modulating frequency is constituted within each period
Sequence can be inconsistent.
Sequence of the so-called each frequency for constituting modulating frequency within each period can be inconsistent, can so understand:
Such as the group of modulating frequency becomes 360Hz+370Hz, sequence in one cycle is 360Hz, 370Hz, and in next period
Interior sequence is 370Hz, 360Hz, other different frequencies and the combination of frequency of different number and so on.
As shown in Fig. 2, present embodiment discloses a kind of electronic article surveillance signal generating system, including a master transmitter
With several secondary transmitters, master transmitter is the signal transmitter in above-described embodiment including the first synchronization unit, and first synchronizes list
Member is for issuing synchronization signal；Each secondary transmitter include sequentially connected second synchronization unit, power amplification unit and
Antenna, several secondary transmitters are divided into several grades, wherein the second of first order pair transmitter (up to two width) synchronizes list
First input terminal and the first synchronization unit output end are electrical connected by wired mode, and (this is preferred embodiment, can also be using wireless
The mode of transmission), to obtain synchronization signal, (synchronization signal and the modulated signal that master transmitter signal generating unit generates are same
Step), it is second same to be all connected with a grade pair transmitter thereon for the input terminal of the second synchronization unit of the secondary transmitter of other grades
The output end of unit is walked, cascaded structure is formed；Synchronization signal (the substantially synchronous modulation that each second synchronization unit obtains
Signal) after power amplification unit carries out power amplification, then be transmitted through antenna.For different application scenarios, use
Secondary transmitter quantity may be different, but its structure is all the same, and there is only a master transmitters.
Present embodiment discloses a kind of electronic article surveillance signal analysis methods, are applied to radio frequency electric burglary protection system for commodities
(EAS), comprising the following steps:
Step1: the response signal of anti-theft tag is received；
Step2: after amplifying, filter and identifying to response signal, alarm signal is issued；
Wherein, the identification in Step2 specifically: judge the feature through filtered signal whether in above-mentioned signal generating method
Modulated signal modulating frequency frequecy characteristic it is corresponding.
Amplification generally includes High frequency filter amplification and low frequency filtering amplification.Amplification, filtering and identification, can be all or part of
It is realized by analog circuit, can also completely or partially use digital circuit (such as MCU, DSP processor) Lai Shixian.
Present embodiment discloses the signal receivers in a kind of radio frequency electric burglary protection system for commodities (EAS) comprising successively
Antenna, amplifying unit, filter unit (amplifying unit and filter unit can merge), discriminating unit and the alarm unit of connection；
Antenna receives the response signal of anti-theft tag after amplifying unit, filter unit, is identified by discriminating unit, is being identified
Alarm signal is issued by rear triggering alarm unit；Wherein discriminating unit for judge the feature through filtered signal whether with
The frequecy characteristic of the modulating frequency of the modulated signal of transmitter (signal transmitter) is corresponding.Amplifying unit generally includes high frequency and puts
Big unit and low frequency amplifying unit, high-frequency amplifying unit can filter out high-frequency carrier signal, obtain the envelope of signal to be analyzed, low
Frequency amplifying unit carries out low-pass filtering to the signal after High frequency amplification, obtains impulse response signal.Discriminating unit generally includes to compare
Compared with device (or A/D conversion circuit), discriminator and counter, comparator, discriminator and counter can be analog circuit, can also
To be digital circuit.Likewise, amplifying unit, filter unit and discriminating unit can completely or partially use analog circuit,
Digital circuit can completely or partially be used.It should be noted that the clock signal of signal receiver can be by connecing antenna
The response signal of receipts carries out mirror wave (low-pass filtering) acquisition, directly can also directly be provided by signal transmitter or by outside the
Tripartite's clock provides.
Above-mentioned corresponding with the frequecy characteristic of modulating frequency, can so understand: anti-theft tag has a fixed frequency, leads to
It is often 8-8.4MHz, referred to as label frequency, by taking 8MHz as an example, in a complete sine of each scanning signal (modulated signal)
In signal, therefore can generate a response signal in 8MHz for each modulated signal, can generate a string of correspondences
Response signal, which has certain law characteristic, and corresponding with the modulating frequency of modulated signal.For using
Modulated signal such as 180Hz as modulating frequency, duration, the responding time intervals of corresponding response signal be it is identical,
And the modulated signal of converter technique (such as 360Hz+370Hz) is used, duration, the responding time intervals of corresponding response signal are deposited
In difference, but there is regularity, the response of the more single modulating frequency of law characteristic is more complicated, therefore by the possibility of noise jamming
Property is just smaller.
Present embodiment discloses a kind of electronic article surveillance detection methods, are applied to radio frequency electric burglary protection system for commodities
Including above-mentioned electronic article surveillance signal generating method and electronic article surveillance signal analysis method (EAS),.
Present embodiment discloses a kind of electronic article surveillance detection systems, including above-mentioned electronic article surveillance signal transmitter
With electronic article surveillance signal receiver.Between transmitter and receiver, generallys use the mode installed on the door and be configured.
Further, for certain large-scale sales fields, present embodiment discloses another electronic article surveillance detection system, packets
Include above-mentioned electronic article surveillance signal generating system and an above-mentioned electronic article surveillance signal receiver.Master transmitter, secondary hair
It penetrates between machine and receiver, generallys use the mode installed on the door and be configured.There are two first order pair transmitter is most, respectively
It is connected in master transmitter, remaining secondary transmitter is step by step with corresponding first order pair trigger mechanism at cascaded structure.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (10)
1. a kind of electronic article surveillance signal generating method is applied to radio frequency electric burglary protection system for commodities (EAS), the method packet
Include following steps:
Step1: modulated signal is generated；
Step2: after carrying out power amplification to modulated signal, launched by antenna；
It is characterized in that, the modulating frequency of the modulated signal is made of at least two frequencies.
2. signal generating method as described in claim 1, which is characterized in that constitute each frequency of the modulating frequency each
Sequence in period is not all the same.
3. a kind of electronic article surveillance signal transmitter, including sequentially connected signal generating unit, power amplification unit and day
Line, for generating modulated signal, power amplification unit is used to carry out power amplification to modulated signal signal generating unit, then passes through
Antenna is launched；It is characterized in that, the modulating frequency of the signal generating unit modulated signal generated is by least two
Frequency is constituted.
4. signal transmitter as claimed in claim 3, which is characterized in that further include the first synchronization of connection signal generating unit
Unit, first synchronization unit is for issuing synchronization signal.
5. a kind of electronic article surveillance signal generating system, which is characterized in that including a signal hair as claimed in claim 4
Machine is penetrated as master transmitter, further includes several secondary transmitters, each secondary transmitter include sequentially connected second synchronization unit,
Power amplification unit and antenna；Several secondary transmitters are divided into several grades, wherein the second of first order pair transmitter is synchronous
Unit input terminal is connected with the first synchronization unit output end, and to obtain synchronization signal, the second of the secondary transmitter of other grades is same
The input terminal of step unit is all connected with the output end of the second synchronization unit of a grade pair transmitter thereon, forms cascaded structure；Often
The synchronization signal that one the second synchronization unit obtains is after power amplification unit carries out power amplification, then is transmitted through antenna.
6. a kind of electronic article surveillance signal analysis method is applied to radio frequency electric burglary protection system for commodities (EAS), including following step
It is rapid:
Step1: the response signal of anti-theft tag is received；
Step2: after amplifying, filter and identifying to response signal, alarm signal is issued；
It is characterized in that, the identification in the Step2 specifically: judge the feature through filtered signal whether with claim
The frequecy characteristic of the modulating frequency of the modulated signal of signal generating method described in 1 or 2 is corresponding.
7. a kind of electronic article surveillance signal receiver, including sequentially connected antenna, amplifying unit, filter unit, identification list
Member and alarm unit；Antenna receives the response signal of anti-theft tag after amplifying unit, filter unit, by discriminating unit into
Row identifies, and alarm unit is triggered after identification passes through and issues alarm signal；It is characterized in that, the discriminating unit is for judging warp
The feature of filtered signal whether with the modulating frequency of the modulated signal of signal transmitter as described in claim 4 or 5
Frequecy characteristic is corresponding.
8. a kind of electronic article surveillance detection method is applied to radio frequency electric burglary protection system for commodities (EAS), which is characterized in that packet
Include signal generating method as claimed in claim 1 or 2 and signal analysis method as claimed in claim 6.
9. a kind of electronic article surveillance detection system, which is characterized in that including signal transmitter as described in claim 3 or 4
With signal receiver as claimed in claim 7.
10. a kind of electronic article surveillance detection system, which is characterized in that including signal generating system as claimed in claim 5,
With signal receiver as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811509873.XA CN109658657A (en) | 2018-12-11 | 2018-12-11 | Signal generating method, analysis method, detection method, relevant device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811509873.XA CN109658657A (en) | 2018-12-11 | 2018-12-11 | Signal generating method, analysis method, detection method, relevant device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109658657A true CN109658657A (en) | 2019-04-19 |
Family
ID=66114056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811509873.XA Pending CN109658657A (en) | 2018-12-11 | 2018-12-11 | Signal generating method, analysis method, detection method, relevant device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109658657A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112037452A (en) * | 2020-09-10 | 2020-12-04 | 成都威图芯晟科技有限公司 | Electronic article surveillance system, transmitter and surveillance signal generation method |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3790945A (en) * | 1968-03-22 | 1974-02-05 | Stoplifter Int Inc | Open-strip ferromagnetic marker and method and system for using same |
| US4249167A (en) * | 1979-06-05 | 1981-02-03 | Magnavox Government And Industrial Electronics Company | Apparatus and method for theft detection system having different frequencies |
| EP0592781A1 (en) * | 1992-10-13 | 1994-04-20 | Sensormatic Electronics Corporation | Article surveillance system with frequency hopping |
| JPH08138160A (en) * | 1994-11-08 | 1996-05-31 | Matsushita Electric Ind Co Ltd | Theft preventive device |
| WO1998007052A1 (en) * | 1996-08-16 | 1998-02-19 | Jon Neal Weaver | Anti-shoplifting security system |
| CN1744141A (en) * | 1999-12-27 | 2006-03-08 | 关卡系统股份有限公司 | Security tag detection and localization system |
| CN1870062A (en) * | 2006-06-21 | 2006-11-29 | 何勇 | Commodity anti-theft detection method, commodity detection signal receiver and commodity anti-theft detection system |
| US20090051524A1 (en) * | 2007-08-20 | 2009-02-26 | Joon Ho Lim | Method and system for recognizing daily activities using sensors |
| CN101719296A (en) * | 2009-11-26 | 2010-06-02 | 上海大学 | Commodity anti-theft detection system emitter capable of outputting selectable 8.2M/10M radio frequency |
| CN101933032A (en) * | 2007-12-03 | 2010-12-29 | 艾利丹尼森公司 | Dual use rfid/eas device |
| CN102105891A (en) * | 2008-06-30 | 2011-06-22 | 荷兰应用自然科学研究组织Tno | A radio frequency tag |
| CN203644153U (en) * | 2013-08-20 | 2014-06-11 | 成都威图晟科技有限公司 | Sound magnetic detection system |
| CN203870628U (en) * | 2014-02-26 | 2014-10-08 | 南京信息工程大学 | Radio frequency identification system with combination of time division multiple access and synchronous code division multiple access |
| CN104200597B (en) * | 2014-08-08 | 2017-01-25 | 西安工程大学 | Detection method of acousto-magnetic electronic commodity anti-theft system |
| EP2609580B1 (en) * | 2010-08-25 | 2018-03-14 | Clairvoyant Technology LLC | Rf metal detector and electronic article surveillance system using same |
| CN108021835A (en) * | 2016-11-04 | 2018-05-11 | Em微电子-马林有限公司 | For providing the method for distorting ring status of radio frequency transponder to reader |
-
2018
- 2018-12-11 CN CN201811509873.XA patent/CN109658657A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3790945A (en) * | 1968-03-22 | 1974-02-05 | Stoplifter Int Inc | Open-strip ferromagnetic marker and method and system for using same |
| US4249167A (en) * | 1979-06-05 | 1981-02-03 | Magnavox Government And Industrial Electronics Company | Apparatus and method for theft detection system having different frequencies |
| EP0592781A1 (en) * | 1992-10-13 | 1994-04-20 | Sensormatic Electronics Corporation | Article surveillance system with frequency hopping |
| JPH08138160A (en) * | 1994-11-08 | 1996-05-31 | Matsushita Electric Ind Co Ltd | Theft preventive device |
| WO1998007052A1 (en) * | 1996-08-16 | 1998-02-19 | Jon Neal Weaver | Anti-shoplifting security system |
| CN1744141A (en) * | 1999-12-27 | 2006-03-08 | 关卡系统股份有限公司 | Security tag detection and localization system |
| CN1870062A (en) * | 2006-06-21 | 2006-11-29 | 何勇 | Commodity anti-theft detection method, commodity detection signal receiver and commodity anti-theft detection system |
| US20090051524A1 (en) * | 2007-08-20 | 2009-02-26 | Joon Ho Lim | Method and system for recognizing daily activities using sensors |
| CN101933032A (en) * | 2007-12-03 | 2010-12-29 | 艾利丹尼森公司 | Dual use rfid/eas device |
| CN102105891A (en) * | 2008-06-30 | 2011-06-22 | 荷兰应用自然科学研究组织Tno | A radio frequency tag |
| CN101719296A (en) * | 2009-11-26 | 2010-06-02 | 上海大学 | Commodity anti-theft detection system emitter capable of outputting selectable 8.2M/10M radio frequency |
| EP2609580B1 (en) * | 2010-08-25 | 2018-03-14 | Clairvoyant Technology LLC | Rf metal detector and electronic article surveillance system using same |
| CN203644153U (en) * | 2013-08-20 | 2014-06-11 | 成都威图晟科技有限公司 | Sound magnetic detection system |
| CN203870628U (en) * | 2014-02-26 | 2014-10-08 | 南京信息工程大学 | Radio frequency identification system with combination of time division multiple access and synchronous code division multiple access |
| CN104200597B (en) * | 2014-08-08 | 2017-01-25 | 西安工程大学 | Detection method of acousto-magnetic electronic commodity anti-theft system |
| CN108021835A (en) * | 2016-11-04 | 2018-05-11 | Em微电子-马林有限公司 | For providing the method for distorting ring status of radio frequency transponder to reader |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112037452A (en) * | 2020-09-10 | 2020-12-04 | 成都威图芯晟科技有限公司 | Electronic article surveillance system, transmitter and surveillance signal generation method |
| CN112037452B (en) * | 2020-09-10 | 2023-02-21 | 成都威图芯晟科技有限公司 | Electronic article surveillance system, transmitter and surveillance signal generation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101182900B1 (en) | Symmetrical multipath method for determining the distance between two transceivers | |
| CN101688913B (en) | Method for determining line-of-sight (los) distance between remote communications devices | |
| US7511604B2 (en) | Method and system for distance determination of RF tags | |
| US9720875B2 (en) | Receiver with signal arrival detection capability | |
| RU2371734C2 (en) | Marker of radio frequency identification of object and system and method for detection of coordinates and control of objects | |
| US20010004375A1 (en) | Telemetry system with authenticaiton | |
| EP1654885A2 (en) | Method and corresponding system for hand-held rf tag locator | |
| US20110221633A1 (en) | Methods and systems for determining the distance between two objects using wirelessly transmitted pulses | |
| AU2007243363B2 (en) | Alarm systems, wireless alarm devices, and article security methods | |
| AU2007243155A1 (en) | Alarm systems, remote communication devices, and article security methods | |
| WO2006026139A1 (en) | Comparative spectrum trace method and apparatus for detecting transmitters | |
| SK164498A3 (en) | Method of transmitting and receiving data, system and receiver therefor | |
| US20100148932A1 (en) | Wireless electronic article surveillance synchronization system and method with data transfer | |
| WO2010116231A1 (en) | Tire information monitoring apparatus with directive antenna | |
| CN109658657A (en) | Signal generating method, analysis method, detection method, relevant device and system | |
| ES2348489T3 (en) | AUTOMATIC WIRELESS SYNCHRONIZATION OF ELECTRONIC ARTICLES SURVEILLANCE SYSTEMS. | |
| CN104380309B (en) | Field analysis instrument | |
| RU71449U1 (en) | LABEL FOR RADIO FREQUENCY IDENTIFICATION OF THE OBJECT AND SYSTEM FOR DETERMINING COORDINATES AND CONTROL OF OBJECTS | |
| US20090067552A1 (en) | Method for the Detection of Symbols and Associated Receiver | |
| CN203644153U (en) | Sound magnetic detection system | |
| US5627526A (en) | Proximity detection using DPSK waveform | |
| CN100464352C (en) | Commodity anti-theft detection method, commodity detection signal receiver and commodity anti-theft detection system | |
| RU2054807C1 (en) | Device for jamming radars | |
| US5894269A (en) | Theft monitoring apparatus | |
| US5034963A (en) | Apparatus for visually aiding MSK detection and interference recognition and classification |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190419 |
|
| RJ01 | Rejection of invention patent application after publication |