CN106716506A - Systems and methods for adaptively controlling a transmitter field - Google Patents
Systems and methods for adaptively controlling a transmitter field Download PDFInfo
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- CN106716506A CN106716506A CN201580052293.0A CN201580052293A CN106716506A CN 106716506 A CN106716506 A CN 106716506A CN 201580052293 A CN201580052293 A CN 201580052293A CN 106716506 A CN106716506 A CN 106716506A
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- 238000001514 detection method Methods 0.000 claims abstract description 105
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Classifications
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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
- G08B13/248—EAS system combined with another detection technology, e.g. dual EAS and video or other presence detection 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
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
- G08B13/1645—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means and other detection means, e.g. microwave or infrared radiation
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- Computer Security & Cryptography (AREA)
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- Burglar Alarm Systems (AREA)
Abstract
Systems (100) and methods (600-800) for adaptively controlling a transmitter field in an electronic article surveillance ('EAS') detection system. The methods comprise: detecting, by at least one first proximity sensor (108a, 108b), a presence of a first person located in proximity to a pedestal (102a, 102b) of the EAS detection system; determining a first distance from the first proximity sensor to the first person; and using the first distance to adaptively control the transmitter field of the EAS detection system.
Description
Technical field
Present invention relates in general to electronic article surveillance (" EAS ") detecting system.More particularly, the present invention relate to suitable
The system and implementation method of the transmitter of answering property control EAS detection system.
Background technology
EAS detection system is generally included：Interrogation antenna, for electromagnetic signal to be sent in interrogation；Mark, with
Some known electromagnetic modes respond to request signal；Antenna, the response for detecting mark；Signal analyzer, is used for
The signal that assessment is produced by detection antenna；And siren, with the presence of mark in instruction interrogation.Then, siren can be with
Being the attribute according to facility starts the basis of one or more suitable responses.Typically, interrogation is in facility (such as zero
Sell shop) near exit, and mark can be attached to commodity, such as items for merchandising or stock article.
A type of EAS detection system is marked using sound magnetic (" AM ").In United States Patent (USP) No.4510489 and
The overall operation of AM EAS detection systems is described in No.4510490, the disclosure of which is herein incorporated by reference.Pass through
The pedestal in exit is arranged in detect that the mark in AM EAS detection systems is focussed in particular in only detection pedestal interval always
Mark.However, the inquiry field of pedestal generation can be expanded to outside be intended to detection zone.For example, the first pedestal is by one
As the primary antenna of detection zone between the first pedestal and the second pedestal is located at including pointing to.When the applying at the first pedestal
During exciter signal, the first pedestal will generate the electromagnetic field of sufficient intensity encouraging the mark in detection zone.Similarly, second
Pedestal will generally include antenna, and the antenna has the primary antenna of direct detection region (and first pedestal of direction).
The exciter signal applied at two pedestals will also generate the electromagnetic field of sufficient intensity encouraging the mark in detection zone.When in inspection
Survey in region when having encouraged mark label, mark label will generate electromagnetic signal, generally can by with the first pedestal and the
Signal is received at the associated antenna of two pedestals to detect the electromagnetic signal.
The content of the invention
The present invention relates to realize the system and method for the transmitter field in Adaptive Control EAS detection system.It is described
Method includes：By at least one first proximity sensors come test position close to the first of the pedestal of EAS detection system
Presence；It is determined that from the first proximity sensor to the first the first distance；And adaptively controlled using the first distance
The transmitter field of EAS detection system processed.Transmitter field is controlled by adjusting the transmission power of the first pedestal.When the first removal
During antenna field pattern, the transmission power of the first pedestal is back to its previous level.
In some cases, the range information related to the people in the back court of the radiation pattern of the antenna of pedestal should not
It is used to control transmission power.In this way, whether methods described can also relate to determine the first antenna for being located at the first pedestal
In the back court of radiation pattern.If it is determined that the first be not in the back court of the radiation pattern of the antenna of the first pedestal, then
One distance can be only used for the Adaptive Control.Alternatively, if it is determined that the radiation of the first antenna for being located at the first pedestal
The back court of pattern is interior and if the range information being associated with the people positioned at back court should be used to control the transmitting work(of pedestal
Rate, then the first distance can be only used for the Adaptive Control.
In other cases, the range information of two or more sensors from EAS detection system is probably conflict
's.In this way, methods described can also relate to：It is determined that from the second proximity sensor to the first second distance；And determine
Whether the first distance and second distance are identical.If it is determined that the first distance is identical with second distance, then the first distance or the are selected
Two distances are for controlling transmission power.Alternatively, if it is determined that the first distance and second distance are differed, then from the first distance and
Minimum range is selected in second distance.In this case, the minimum range is used to control transmission power.
In other cases, two or more people can are closely located to pedestal.In this way, methods described can also relate to：
It is the first be closely located to pedestal when test position close to the second people of the pedestal of EAS detection system presence；It is determined that from pedestal
To the second distance of second people；And determine whether the first distance and second distance are identical.If it is determined that the first distance and
Two apart from identical, then select the first distance or second distance to be used to control transmission power.Alternatively, if it is determined that the first distance and
Second distance is differed, then select minimum range from the first distance and second distance.(A) if it is determined that with the minimum range phase
The people of association is not in the back court of the radiation pattern of the antenna of the first pedestal, or (B) if it is determined that with the minimum range
Associated people is located in the back court of the radiation pattern of the antenna of the first pedestal and if is associated with the people positioned at back court
Range information should be used to control the transmission power of pedestal, then the minimum range is used to control transmission power.
Brief description of the drawings
Embodiment will be described with reference to following accompanying drawing, similar label represents similar item in all of the figs, attached
In figure：
Fig. 1 is the side view of EAS detection system.
Fig. 2 is the top view of the EAS detection system in Fig. 1, its EAS detection zone that can be used to understand EAS detection system.
Fig. 3 and 4 is home court and the figure of back court of the antenna used in the EAS detection system that can be used to understand Fig. 1.
Fig. 5 is the figure that can be used to understand the detection zone in the EAS detection system of Fig. 1.
Fig. 6-8 each provides the stream of the illustrative methods for the transmitter field in Adaptive Control EAS detection system
Cheng Tu.
Fig. 9 is the block diagram of the arrangement of the EAS controllers used in the EAS detection system that can be used to understand Fig. 1.
Specific embodiment
It is readily appreciated that, totally describes herein and the component of embodiment illustrated can be by of all kinds in the accompanying drawings
Different configurations is arranged and designs.Therefore, the more detailed description for being carried out to various embodiments shown in accompanying drawing below
The scope of the present disclosure is not limiting as, but only represents various embodiments.Although illustrating the various of embodiment in the accompanying drawings
Aspect, but accompanying drawing is not necessarily drawn to scale, unless otherwise specified.
The present invention can be implemented with other concrete forms without departing from the spirit or essential characteristics of the present invention.
Described embodiment will be considered as merely illustrative and not restrictive in all respects.Therefore, the scope of the present invention by
Appended claims are indicated, rather than are indicated by this specific embodiment.The implication of the equivalent of fallen with claim and
In the range of change will covered in the category of claim.
Refer to that feature, advantage or similar language are not meant to be realized using the present invention in whole this specification
All feature and advantage or should be in any single embodiment of the invention.On the contrary, referring to feature and advantage
Language is understood to that in conjunction with the embodiments described specific features, advantage or characteristic are included at least one implementation of the invention
In example.Therefore, discussion throughout the specification to feature and advantage and similar language can with but refer to not necessarily identical
Embodiment.
Additionally, described feature of the invention, advantage and characteristic can combine in any suitable manner at one or
In multiple embodiments.According to description herein, those skilled in the relevant art will recognize that, can be in no specific embodiment
The present invention is put into practice in the case of one or more in specific features or advantage.In other circumstances, can recognize that some are implemented
Additional feature and advantage in example can be not present in all embodiments of the invention.
Refer to that " one embodiment ", " embodiment " or similar language mean to combine indicated implementation in this manual
Special characteristic, structure or the characteristic that example is described are included at least one embodiment of the invention.Therefore, in whole this explanation
Phrase " in one embodiment ", " in embodiment " and similar language in book can with but to be not necessarily all refer to that identical is implemented
Example.
As used in this article, unless the context clearly indicates otherwise, otherwise singulative " ", " one " and " being somebody's turn to do " are wrapped
Include plural thing.Unless otherwise defined, all technical terms otherwise used herein and scientific terminology have and this area
The identical implication that is generally understood of those of ordinary skill.As used in this document, term " including " mean " include, but
It is not limited to ".
Present invention generally provides system and realization for adjusting EAS detection system power based on degree of approach information
Method.In this respect, sensor (for example, ultrasonic transducer) is installed on the pedestal of EAS detection system.These sensors can
It is easy to test position close to the people of pedestal.According to the detection, the transmitter power of EAS detection system is set to decay so that horizontal pin
It is optimised to systematic function.In fact, compared with traditional EAS detection system, the EAS detection system can experience power save,
Back court detection is reduced and detection uniformity is improved.
Referring now to Fig. 1 and 2, there is provided the exemplary architecture of EAS detection system 100.Note, herein according to AM
EAS detection system describes the present invention.However, the method for the present invention can be also used for other types of EAS detection system, including
Use the system and radio frequency identification (" RFID ") EAS detection system of radio frequency (" RF ") type label.
EAS detection system 100 will be positioned at the position adjacent with the inlet/outlet 104 of safety devices (for example, retail shop).
Using the special EAS marker label (" safety label ") for designing, EAS marker label is applied in shop business to EAS detection system 100
Product or other articles being stored in safety devices.Can be deactivated by authorised person at safety devices or removal peace
Full label.For example, in retail environment, safety label can be removed by store clerk.When EAS detection system 100 is approaching
Mouthful/outlet EAS detection zones 108 idealization represent in detect activity safety label 112 when, EAS detection system will
Detect the presence of this safety label and alarm will be sent or some other suitable EAS responses are generated.Therefore, EAS detections
System 100 is arranged to detect and prevents from taking away commodity or product from controlled area without permission.
EAS detection system 100 includes a pair of base 102a, 102b, the position of pedestal 102a, 102b with known distance every
Open (for example, in opposite side of inlet/outlet 104).Typically, pedestal 102a, 102b is by substrate 106a, 106b stabilization and props up
Support.Usually, each pedestal 102a, 102b will include being suitable to one or more days of the special EAS security label of auxiliary detection
Line, as described in this article.For example, pedestal 102a can include at least one antenna 302, antenna 302 is suitable to send or produces
The response signal that electromagnetic driver signal field and reception are generated by the safety label in detection zone 108.In some embodiments
In, identical antenna can be used for both receive capabilities and sending function.Similarly, pedestal 102b can include at least one
Antenna 402, antenna 402 is suitable to send or produces electromagnetic driver signal field and receive by the safety in detection zone 108
The response signal of label generation.The antenna set in pedestal 102a, 102b can be traditional conductive coil or wire loop design, such as
Commonly used in AM type EAS pedestals.Herein, these antenna will be referred to as exciter coil sometimes.In certain embodiments, may be used
To use individual antenna in each pedestal.Individual antenna is selectively coupled to EAS receiver.EAS transmitters are multiple with the time-division
With mode operate.However, as shown in fig. 1, including that two antennas (or exciter coil) can be in each pedestal
Beneficial, wherein upper antenna is located at lower antenna top.
Antenna in pedestal 102a, 102b is electrically coupled to system controller 110.System controller 110 controls EAS
The operation of detecting system 100, to perform EAS functions as described in this article.System controller 110 may be located at pedestal 102a,
In substrate 106a, 106b of in 102b, or may be located in the single underframe close at the position of pedestal.Example
Such as, during system controller 110 may be located at ceiling, ceiling be located at directly over pedestal 102a, 102b or with pedestal 102a, 102b
It is adjacent.
As described above, EAS detection system includes AM type EAS detection systems.In this way, generate being used as safety using each antenna
Electromagnetism (" EM ") field of tag exciter signal.Safety label exciter signal is caused in the safety label in detection zone 108
Comprising band (for example, the band formed by magnetostriction or ferromagnetic amorphous metal) mechanical oscillation.Due to stimulus signal, safety
Label will resonance and mechanical oscillation due to magnetostrictive effect.After stimulus signal termination, the vibration will continue in short-term
Between.The vibration of band causes its changes of magnetic field, and this can induce AC signals in receiver antenna.The signal that this is induced is used
It is present in detection zone 108 in bar band.As described above, the identical antenna included in pedestal 102a, 102b can be used
Make both transmission antenna and reception antenna.Therefore, the antenna in each in pedestal 102a, 102b can be in several different moulds
It is used to detect safety label exciter signal under formula.These patterns below will be described in further detail.
Referring now to Fig. 3 and Fig. 4, the exemplary antenna of the antenna 302,402 included in pedestal 102a, 102b is shown
Pattern 300,400.As it is known in the art, radiation (or reception) property that antenna ra-diation pattern is given antenna becomes with interval
The figure changed and change is represented.The property of antenna is identical under the sending mode and reception pattern of operation.In this way, shown day
Beta radiation pattern can be applied to send and receive both operations as described in this article.The exemplary antenna shown in Fig. 3-4
Pattern 300,400 is azimuth plane pattern, represents the antenna pattern in x, y-coordinate plane.Orientation pattern represents with polar form,
And for understanding that invention arrangement is sufficient.The azimuth anteena that is shown in Fig. 3-4 pattern is to make the antenna 302,402 will be with
The visual useful mode in direction that specific power level sends and receives signal.
The antenna field pattern 300 shown in Fig. 3 exists including peak valueThe main lobe 304 and peak value at place existThe back court valve 306 at place.On the contrary, the antenna field pattern 400 shown in Fig. 4 exists including peak valuePlace
Main lobe 404 and peak value existThe back court valve 406 at place.In EAS detection system 100, each pedestal 102a, 102b quilt
The main lobe of the antenna being placed such that included in it is directed into detection zone 108.Therefore, in EAS detection system 100
A pair of base 102a, 102b will produce overlap in antenna field pattern 300,400, as shown in Figure 5.Note, for understanding originally
The purpose of invention, the antenna field pattern 300,400 to being shown in Fig. 5 is scaled.Especially, pattern is shown in which to apply
The exciter signal for being added to the specific amplitude of antenna 302,402 will produce the region of detectable response in EAS security label
External boundary or limitation.It will be appreciated, however, that the safety label in the boundary of at least one antenna field pattern 300,400 is in quilt
Exciter signal will produce detectable response when stimulating.
The antenna field pattern 300,400 of the overlap in Fig. 5 will include the region A that main lobe 304,404 is overlapped wherein.So
And, it can be observed in figure 5, the main lobe of each pedestal and the back court valve being associated with other pedestals can also have some weights
It is folded.For example, it is observed that in the B of region, main lobe 404 is overlap with back court valve 306.Similarly, in the C of region, main lobe 304
It is overlap with back court valve 406.Region A between pedestal 102a, 102b defines EAS detection zones 108, in detection zone 108,
The safety label of activity should cause that EAS detection system 100 generates alarm response.Safety label quilt and main lobe in the A of region
304th, the associated energy of the exciter signal in 404 stimulates, and will produce the response that can be detected at each antenna.
The response produced by the safety label in the A of region is detected and in system controller 110 in the main lobe of each antenna
It is processed.Note, the safety label in region B or C will also be encouraged by antenna 302,402.Safety post in these regions B and C
Signing the response signal for producing will also be received at one or two antenna.The response signal is referred to herein as " safety post
Sign signal ".
Referring again to Fig. 1-2, multiple proximity sensor (for example, ultrasonic transducer) 108a, 108b are valuably installed
On each pedestal 102a or 102b.Proximity sensor and ultrasonic transducer are well known in the art, therefore will not be at this
It is described in text.In addition, it is to be appreciated that each proximity sensor 108a, 108b is configured generally to detection being located at accordingly
The presence of the people and/or object of the given side of pedestal and he/her/its distance away from pedestal.
Therefore, proximity sensor 108a, 108b be arranged to point to each corresponding pedestal 102a, 102b front court and after
Both.In this way, the first direction shown in first proximity sensor directional arrow 110, and therefore detection is located at accordingly
People in the back court of pedestal.Second opposite direction shown in second proximity sensor directional arrow 112, and therefore detecting position
People in the front court of corresponding pedestal.
In the case of ultrasonic transducer, each proximity sensor：Generation high frequency sound wave；Send in given directions high
Frequency sound wave；And the people from the range of the high frequency sound wave transmitted by and/or object reception of echoes signal.Then, system
Controller 110 determines to send the very first time of corresponding high frequency sound wave from proximity sensor and proximity sensor reception of echoes is believed
Number the second time between time interval.Then, system controller 110 using the time interval based on determine before when
Between be spaced determine from corresponding pedestal to the distance of people/object.Then, individually and/or it is used independently institute for each pedestal
The distance of determination controls EAS transmitter powers.People move to pedestal at a distance of specific range (for example, enough distances with
Cause in being no longer in interrogation) after, EAS transmitter powers are back to its initial level.
By controlling the EAS transmitter powers of pedestal, the degree of approach information dynamic based on the people about being closely located to pedestal
Adjust the size of the antenna field pattern of pedestal.Because the EAS transmitter powers of each pedestal are sent out independently of the EAS of another pedestal
Device power is sent to adjust, thus the antenna field pattern of the two pedestals can be identical or difference in any preset time
's.For example, let as assume that, the position of people away from pedestal 102a than pedestal 102b closer to.In this case, adjustment pedestal 102a
Antenna field pattern to reduce its overall dimensions, its reduction amount more than pedestal 102b antenna field pattern reduction amount.
In some cases, the range information being associated with the people in back court is ignored, i.e. be not used to control
EAS transmitter powers.In this way, the range information being only associated with the people between pedestal 102a, 102b is used to adapt to
Property ground control two antenna field patterns of pedestal 102a, 102b.In other cases, it is really not so, and with positioned at front court and
The range information that people in back court is associated is used to control the intensity of transmitter field.
In the case of those and other, sensor 108a and 108b may generate relevant particular person relative to given pedestal
The conflicting information of the distance of 102a or 102b.For example, proximity sensor 108a generation assignors and pedestal 102a are at a distance of 3 feet
Information.On the contrary, proximity sensor 108b generates the information that assignor and pedestal 102a are at a distance of 2 feet.In this way, by this two
The information of individual proximity sensor generation is conflict.Therefore, the transmitter power of pedestal 102a is based on by proximity sensor
The information of 108b generations rather than adjusted by information that proximity sensor 108a is generated, i.e., based on indicating to pedestal 102a most
The sensor information of small distance is adjusted.
As a rule, the people that only one of which is possessed the safety label of activity is closely located to pedestal 102a, 102b.So
And, the people that there are two or more safety labels for possessing activity is closely located to the certain situation of pedestal 102a, 102b.At this
In the case of kind, which people closer to given pedestal determined.Then, distance letter associated with this people (that is, immediate people)
Breath is used to adaptively control the transmitter field of given pedestal.
In all cases, the antenna field pattern of pedestal 102a and 102b is optionally reduced to advantage is obtained that：
(1) power is saved；(2) back court detection is reduced；And/or (3) improve detection uniformity.On advantage (1), in some cases
(for example, when people is when being closely located to pedestal), realizes saving power by simply reducing transmitter power.For advantage
(2), realize reducing back court detection by ignoring the security tag signals being associated with the people in back court.For advantage
(3), it will be appreciated that when safety label closely pedestal, security tag signals may not be detected, because transmitter field
It is relatively strong in that position.Relatively strong transmitter field causes the amplitude of security tag signals to exceed given threshold value, and therefore
Think not constitute the security tag signals for detecting by system 100.By reducing antenna field pattern and/or transmitter field, subtract
The small transmitter field intensity close to transmitter, thus also reduces the amplitude of security tag signals.In fact, safety label is believed
Number amplitude be down to below threshold value.Therefore, security tag signals are desirably detected in system 100.
Referring now to Fig. 6, there is provided for the illustrative methods of the transmitter field in Adaptive Control EAS detection system
600 flow chart.Method 600 starts from step 602, and proceeds step 604.In step 604, test position is approached
The presence of the people of the pedestal (for example, pedestal 102a or 102b of Fig. 1) of EAS detection system.It is then determined from pedestal to people away from
From as shown at step 606.
Afterwards, determine whether that someone is located in the back court of the radiation pattern of the antenna of pedestal.If nobody is located at back court
Interior [608：It is no], then perform step 610.Step 610 be directed to use with identified distance come for pedestal transmitter adaptively
Control transmitter field so that the overall dimensions of antenna field pattern reduce.Then, method 600 proceeds step 618.Step 618
It is related to when detection people removes antenna pattern.Step 620, in step 620, the transmission power of pedestal are performed in response to the detection
Level is reset, i.e. return to its initial value.Then, step 622 is performed, in step 622, method 600 returns to step
604。
If people is located at [608 in back court：It is], then determination step 612 is performed to determine what is be associated with the people in back court
Whether range information should be used to control transmitter power.If the range information being associated with the people in back court should not be by
For controlling transmitter power [612：It is no], then step 614 is performed, in step 614, method 600 returns to step 604.Phase
Instead, if the range information being associated with the people in back court should be used to control transmitter power [612：Be], then really
The transmitter that fixed distance is utilized for pedestal adaptively controls transmitter field so that the overall dimensions of antenna field pattern subtract
It is small, as shown in step 616.Then, step 618 is related to when detection people removes antenna pattern.Step is performed in response to the detection
620, in step 620, the transmission power level of pedestal is reset, i.e. return to its initial value.Then, step 622 is performed,
In step 622, method 600 returns to step 604.
Referring now to Fig. 7, there is provided for the illustrative methods of the transmitter field in Adaptive Control EAS detection system
700 flow chart.Method 700 is shown when two proximity sensors provide the range measurements of identical or conflict
Example process.For example, in the case of the range measurements of conflict, the first proximity sensor assignor is with pedestal apart
2 feet.Second proximity sensor points out people with pedestal at a distance of 3 feet.Following process description within system 100 can be as
The range information of where reason conflict.
As shown in Figure 7, method 700 starts from step 702, and proceeds step 704.In step 704, by
At least two proximity sensors of EAS detection system are detected.More specifically, each proximity sensor test position
Close to the presence of the people of the pedestal of EAS detection system.Then, determine in step 706 from each sensor to the people for detecting
Distance.Afterwards, whether determination step 708 is performed identical to determine two distances.
If two apart from identical [708：It is], then select any one in the two identified distances.On the contrary, such as
Really two distances differ [708：It is no], then the identified distance with minimum value in two identified distances is selected,
As shown on step 712.When step 710 or 712 is completed, judge whether people is located at the back court of the radiation pattern of the antenna of pedestal
It is interior.
If the people for being detected is not at [714 in back court：It is no], then perform step 716.Step 716 is directed to use with institute
Selection really set a distance adaptively control transmitter field come the transmitter for EAS detection system so that antenna field pattern it is whole
Body size reduces.Afterwards, in step 724, when detection people removes antenna field pattern.When such detection is carried out, pedestal
Transmission power increase to its initial value, as shown in step 726.Then, step 728 is performed, in step 728, method 700 is returned
Return to step 704.
If the people for detecting is located at [714 in back court：It is], then judge related to the people positioned at back court in step 718
Whether the range information of connection should be used to control transmitter power.If the range information should not be used to control transmitter
Power [720：It is no], then method 700 returns to step 704, as shown in step 720.If on the contrary, the range information should be by
For controlling transmitter power [720：It is], then step 722 is performed, in step 722, the distance of selected determination is used to
Adaptively the transmitter field of control pedestal causes that the overall dimensions of antenna field pattern reduce.In next step 724, people is detected
When antenna field pattern is removed.When such detection is carried out, the transmission power of pedestal increases to its initial value, such as step 726
It is shown.Then, step 728 is performed, in step 728, method 700 returns to step 704.
Referring now to Fig. 8, there is provided for the illustrative methods of the transmitter field in Adaptive Control EAS detection system
800 flow chart.Method 800 shows showing in the detection for being closely located to pedestal for carrying out indicating two or more individuals
Example property process.For example, the first proximity sensor detects the first presence, and the second proximity sensor detects the second people's
In the presence of.Following method 800 describes how system 100 can process such situation：In two people are located at back court, two
People is located in front court, and/or one-man is when being located in back court or front court.
As shown in Figure 8, method 800 starts from step 802, and proceeds step 804.Step 804 is related to detection
It is closely located to the pedestal (for example, pedestal 102a or 102b of Fig. 1) of EAS detection system (for example, system 100 of Fig. 1) at least
Two presence of people.In next step 806, it is determined that from pedestal to the distance of each people for detecting.If identified
Apart from identical [808：Be], then in step 810 select two identified distances in any one.If identified distance
Differ [808：It is no], then the identified distance with minimum value in two identified distances is selected in step 812.
When completing step 810 or 812, method 800 proceeds step 814-828.
In determination step 814, it is determined that whether being located at the antenna of pedestal with the selected people for determining that distance connection is associated
Radiation pattern back court in.If people is not in back court [814：It is no], then the distance of selected determination is utilized for
The transmitter of pedestal adaptively controls transmitter field so that the overall dimensions of antenna field pattern reduce.Then, step is performed
824, detect when people removes antenna field pattern in step 824.In the detection, it is initial that the transmission power of pedestal increases to its
Value, as shown in step 826.Afterwards, step 828 is performed, in step 828, method 800 returns to step 804.
If people is located at [814 in back court：It is], then determination step 818 is performed, in determination step 818, judge and be located at
Whether the range information that the people of back court is associated should be used to control transmitter power.If the range information should not be with described
Mode use [818：It is no], then perform step 820.In step 820, another identified range information is selected (i.e., separately
One identified range information of the people for detecting).Afterwards, method 800 returns to step 814, as shown in step 821.
If the range information should in this way use [818：It is], then perform step 822, in step 822, institute
Transmitter that the range information of the determination of selection is utilized for pedestal adaptively controls transmitter field so that antenna field pattern
Overall dimensions reduce.In next step 824, when detection people removes antenna field pattern.In the detection, the transmitting of pedestal
Power increases to its initial value, as shown in step 826.Afterwards, step 828 is performed, in step 828, method 800 returns to step
Rapid 804.
Referring now to Fig. 9, there is provided can be used for the block diagram of the arrangement for understanding system controller 110.System controller includes
Processor 916 (such as microcontroller or CPU (" CPU ")).System controller is also stored including computer-readable
Medium, such as stores the instruction (example for being configured as realizing one or more methods described herein, process or function thereon
Such as, software code) one or more set memories 918.Instruction (that is, computer software) can include that EAS detects mould
Block 920 detects and performs the side that the position for detecting based on EAS security label issues alarm come selectivity to contribute to EAS
Method, as described in this article.Instruction can also include people's detection module 950 with contribute to test position close to pedestal people, really
Fixed distance from pedestal to people and adaptively control transmitter field based on distance is determined.During execution is instructed, these
Instruction can also completely or at least partially in processor 916.
System also includes at least one EAS transceiver 908, and EAS transceiver 908 includes transmitter circuit 910 and receiver
Circuit 912.Transmitter circuit and acceptor circuit are electrically coupled to antenna 302 and antenna 402.Suitable multiplexing cloth can be provided
Put to help to be received and transmitted both operations using individual antenna (for example, antenna 302 or 402).Can be in antenna
302nd, occur at 402 to send operation simultaneously, hereafter, can simultaneously occur to receive operation at each antenna and be swashed with intercepting
The mark label encouraged.Alternatively, selectivity control operation can be sent as described in this article so that retouch herein for performing
The purpose of the various algorithms stated, when safety label exciter signal is sent, only one antenna is movable.Antenna 302,402
The similar upper antenna of the antenna for showing and describing with relative to Fig. 1 and lower antenna can be included.Can be by transmitter electricity
Road 910 or processor 916 control to be applied to the input actuator signal of upper antenna and lower antenna so that upper antenna and
Lower antenna is as needed with phase auxiliary or antiphase configuration operation.
The add-on assemble of system controller 110 can include communication interface 924, and communication interface 924 is configured as contributing to
From system controller 110 to the wiredly and/or wirelessly communication of the long-range EAS system server placed.System controller can be with
Including：For the real-time clock of timing purpose；Can be by when detecting the EAS security label of activity in the EAS detection zones 108
Activation siren 926 (for example, audible alarm, visible alarm or both).Power supply 928 is to system controller 110
Various assemblies provide necessary electric power.The electrical connection from power supply to various system components is eliminated in fig .9, to avoid making this
Invention is smudgy.
It will be apparent to one skilled in the art that the system controller framework illustrated in Fig. 9 is represented can be used for system of the invention
One possible example of system framework.However, the invention is not restricted to this point, and under any circumstance can be without restriction
Use any other suitable framework.Including but not limited to application specific integrated circuit, programmable logic array and other hardware units
Special hardware implementation mode can similarly be configured to realize method described herein.It should be understood that various inventions
Property implementation method equipment and system widely include various electronics and computer system.Some embodiments can be utilized in module
Between and module among communicate relevant control and data-signal come realize two or more specific interconnected hardware modules or
Function in device, or as the part of special integrated circuit.Therefore, example system can be applied to software, firmware and
Hardware implementation mode.
Although being directed to one or more implementations illustrates and describes the present invention, those skilled in the art exists
To expect equivalent alternative form and modification after reading and understanding the specification and drawings.In addition, although may be
Particularly unique feature of the present invention is disclosed for the only one in several implementations, but this feature can be with other implementations
One or more of the other combinations of features, this can be desired and favourable for any given or specific application.Cause
And, therefore, range of the invention and scope should not be limited by any one in embodiments described above.Conversely, should
The scope of the present invention is limited according to following claim and its equivalent.
Claims (20)
1. the method for the transmitter field in a kind of electronic article surveillance EAS detection system for Adaptive Control, including：
By at least one first proximity sensors come test position close to the first of the pedestal of the EAS detection system
In the presence of；
It is determined that from first proximity sensor to the first the first distance；And
Carry out the transmitter field of EAS detection system described in Adaptive Control using first distance.
2. method according to claim 1, also includes：Determine the first antenna for whether being located at first pedestal
Radiation pattern back court in.
3. method according to claim 2, also includes：As long as determining described the first to be not at first pedestal
In the back court of the radiation pattern of the antenna, then the use step is performed.
4. method according to claim 2, also includes：If it is determined that described the first positioned at described in first pedestal
The back court of the radiation pattern of antenna is interior and if the range information being associated with the people in the back court should
When the transmission power for being used to control pedestal, then the use step is performed.
5. method according to claim 1, also includes：When the first removal antenna field pattern, make described first
The transmission power of pedestal return to before level.
6. method according to claim 1, also includes：
It is determined that from the second proximity sensor to the first second distance；And
Determine whether first distance and the second distance are identical.
7. method according to claim 6, also includes：
If it is determined that first distance is identical with the second distance, then in selecting first distance and the second distance
Any one be used to control transmission power, or if it is determined that first distance and the second distance are differed, then from institute
State and select minimum range in the first distance and the second distance；And
Transmission power is controlled using the described first distance, the second distance or the minimum range for selecting before.
8. method according to claim 1, also includes：
When described the first when being closely located to the pedestal, test position close to the pedestal of the EAS detection system second
The presence of people；
It is determined that from the pedestal to the second distance of second people；And
Determine whether first distance and the second distance are identical.
9. method according to claim 8, also includes：If it is determined that first distance is identical with the second distance,
Any one for then selecting in first distance and the second distance is used to control transmission power.
10. method according to claim 8, also includes：
If it is determined that first distance and the second distance are differed, then from first distance and the second distance
Selection minimum range；And
(A) if it is determined that the people being associated with the minimum range is not at the institute of the antenna of first pedestal
In stating the back court of radiation pattern, or
(B) if it is determined that the people being associated with the minimum range is located at the spoke of the antenna of first pedestal
Penetrate in the back court of pattern, and if the range information being associated with the people in the back court should be used to control
The transmission power of pedestal,
Then transmission power is controlled using the minimum range.
A kind of 11. electronic article surveillance EAS detection systems, including：
At least one proximity sensor, for test position close to the pedestal of the EAS detection system the first presence；
And
System controller, for determining from first proximity sensor to the first the first distance, and uses
First distance carrys out the transmitter field of EAS detection system described in Adaptive Control.
12. EAS detection systems according to claim 11, wherein the system controller also determine it is described it is the first whether
In the back court of the radiation pattern of the antenna of first pedestal.
13. EAS detection systems according to claim 12, as long as wherein determining described the first to be not at described first
In the back court of the radiation pattern of the antenna of pedestal, then the system controller is fitted using first distance
Answering property controls the transmitter field.
14. EAS detection systems according to claim 12, wherein if it is determined that described the first positioned at first pedestal
The antenna the radiation pattern the back court in and if the distance being associated with the people in the back court
Information should be used to control the transmission power of pedestal, then the system controller carrys out Adaptive Control using first distance
The transmitter field.
15. EAS detection systems according to claim 11, wherein when the first removal antenna field pattern, it is described
System controller also return to the transmission power of first pedestal before level.
16. EAS detection systems according to claim 11, wherein the system controller is also：
It is determined that from the second proximity sensor to the first second distance；And
Determine whether first distance and the second distance are identical.
17. EAS detection systems according to claim 16, wherein the system controller is also：
If it is determined that first distance is identical with the second distance, then first distance or the second distance is selected to use
In control transmission power, or if it is determined that first distance and the second distance are differed, then from first distance
Minimum range is selected with the second distance；And
Transmission power is controlled using the described first distance, second distance or the minimum range for selecting before.
18. EAS detection systems according to claim 11, wherein the system controller is also：
When described the first when being closely located to the pedestal, test position close to the pedestal of the EAS detection system second
The presence of people；
It is determined that from the pedestal to the second distance of second people；And
Determine whether first distance and the second distance are identical.
19. EAS detection systems according to claim 18, wherein if it is determined that first distance and the second distance
It is identical, then select first distance or the second distance to be used to control transmission power.
20. EAS detection systems according to claim 19, wherein
If it is determined that first distance and the second distance are differed, then from first distance and the second distance
Selection minimum range, and
(A) if it is determined that the people being associated with the minimum range is not at the institute of the antenna of first pedestal
In stating the back court of radiation pattern, or
(B) if it is determined that the people being associated with the minimum range is located at the spoke of the antenna of first pedestal
Penetrate in the back court of pattern, and if the range information being associated with the people in the back court should be used to control
The transmission power of pedestal,
Then the minimum range is used to control transmission power.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462033391P | 2014-08-05 | 2014-08-05 | |
| US62/033,391 | 2014-08-05 | ||
| US14/466,046 | 2014-08-22 | ||
| US14/466,046 US9311796B2 (en) | 2014-08-22 | 2014-08-22 | Systems and methods for adaptively controlling a transmitter field |
| PCT/US2015/042169 WO2016022313A1 (en) | 2014-08-05 | 2015-07-27 | Systems and methods for adaptively controlling a transmitter field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106716506A true CN106716506A (en) | 2017-05-24 |
| CN106716506B CN106716506B (en) | 2021-09-03 |
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| CN201580052293.0A Active CN106716506B (en) | 2014-08-05 | 2015-07-27 | System and method for adaptively controlling transmitter field |
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| Country | Link |
|---|---|
| EP (2) | EP3178075B1 (en) |
| KR (1) | KR102531482B1 (en) |
| CN (1) | CN106716506B (en) |
| AU (1) | AU2015298607B2 (en) |
| CA (1) | CA2961875C (en) |
| WO (1) | WO2016022313A1 (en) |
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- 2015-07-27 EP EP15745119.6A patent/EP3178075B1/en active Active
- 2015-07-27 WO PCT/US2015/042169 patent/WO2016022313A1/en active Application Filing
- 2015-07-27 EP EP20212263.6A patent/EP3809383B1/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20170053622A (en) | 2017-05-16 |
| CN106716506B (en) | 2021-09-03 |
| CA2961875C (en) | 2023-09-26 |
| EP3809383A1 (en) | 2021-04-21 |
| EP3809383B1 (en) | 2023-12-27 |
| AU2015298607B2 (en) | 2017-04-13 |
| WO2016022313A1 (en) | 2016-02-11 |
| CA2961875A1 (en) | 2016-02-11 |
| EP3178075B1 (en) | 2020-12-09 |
| KR102531482B1 (en) | 2023-05-10 |
| EP3178075A1 (en) | 2017-06-14 |
| AU2015298607A1 (en) | 2017-03-23 |
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