CN109686033A - Sound magnetic burglary-resisting system and its antenna structure - Google Patents
Sound magnetic burglary-resisting system and its antenna structure Download PDFInfo
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- CN109686033A CN109686033A CN201910042946.7A CN201910042946A CN109686033A CN 109686033 A CN109686033 A CN 109686033A CN 201910042946 A CN201910042946 A CN 201910042946A CN 109686033 A CN109686033 A CN 109686033A
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- Prior art keywords
- sound magnetic
- antenna
- resisting system
- burglary
- magnetic burglary
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- 239000011358 absorbing material Substances 0.000 claims abstract description 15
- 230000003447 ipsilateral effect Effects 0.000 claims abstract description 7
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- 239000000843 powder Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 229910017082 Fe-Si Inorganic materials 0.000 claims description 3
- 229910017133 Fe—Si Inorganic materials 0.000 claims description 3
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 3
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 229910002796 Si–Al Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 239000011863 silicon-based powder Substances 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 9
- 230000035945 sensitivity Effects 0.000 description 12
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- 230000035699 permeability Effects 0.000 description 2
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- 208000033748 Device issues Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
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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
- G08B13/2405—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 characterised by the tag technology used
- G08B13/2408—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 characterised by the tag technology used using ferromagnetic tags
-
- 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
- G08B13/2405—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 characterised by the tag technology used
- G08B13/2422—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 characterised by the tag technology used using acoustic or microwave tags
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2428—Tag details
- G08B13/2431—Tag circuit details
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
- G08B13/2468—Antenna in system and the related signal processing
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
- G08B13/2468—Antenna in system and the related signal processing
- G08B13/2477—Antenna or antenna activator circuit
Abstract
The invention discloses a kind of sound magnetic burglary-resisting system and its antenna structure, antenna structure includes: antenna body and is made and is used to absorb the suction wave layer of the electromagnetic wave signal of first frequency range of absorbing material；Antenna body has the first surface for issuing and/or receiving electromagnetic wave signal, and has for the second surface towards electromagnetic interference source；First surface is located at the not ipsilateral of antenna body with second surface；The second surface of antenna body, which is equipped with, inhales wave layer；First frequency range, it is consistent with the operating frequency range of antenna body and consistent with the electromagnetic interference frequency range of electromagnetic interference source.Present invention ensures that the detection range of the soft label of sound magnetic will not be greatly reduced in sound magnetic burglary-resisting system, to be conducive to matching for sound magnetic burglary-resisting system label soft for sound magnetic.
Description
Technical field
The present invention relates to sound magnetic technology fields, more particularly, to a kind of sound magnetic burglary-resisting system and its antenna structure.
Background technique
Sound magnetic burglary-resisting system is widely used in each as one of eas system with its superior performance
In market, for protecting commodity on sale not stolen.Sound magnetic burglary-resisting system mainly includes transmitting antenna, receiving antenna and control dress
Three parts are set, its working principle is that: transmitting antenna timing transmitting 58kHz electromagnetic wave signal is to form alternating magnetic field, when sound magnetic passes
When sensor enters alternating magnetic field (detection zone), sound Magnetic Sensor resonance frequency due to consistent with the carrier frequency in alternating magnetic field,
And the resonance signal that frequency is about 58kHz is generated, it is (continuous when i.e. transmitting antenna works within the timing silence period of transmitting antenna
Repeat ' transmitting signal-silence ' this process), which can be received by the receiving antenna, by control device pair
Judgement sound Magnetic Sensor is detected and triggers alarm after the analysis of resonance signal.Transmitting antenna can be by having with receiving antenna
The transmitting receiving antenna of signal transmission function and signal receiving function substitution.
Currently, sound magnetic burglary-resisting system be generally the transmitting antenna of vertical and buried, vertical sound magnetic burglary-resisting system with
Receiving antenna (or transmitting receiving antenna) is erected at the entrance in shop.And buried sound magnetic burglary-resisting system is due to antenna
Be embedded in subsurface, therefore, signal be transmit up and down and will not occupied space, so buried sound magnetic burglary-resisting system
Advantage is more preferable, therefore increasingly by the welcome in market.
But either buried sound magnetic burglary-resisting system or vertical sound magnetic burglary-resisting system, it is easy by electromagnetic interference
(electromagnetic wave signal that electromagnetic interference can show as antenna sending is reflected back and is received by electromagnetic interference source the electromagnetic interference in source
It arrives, so as to cause false alarm；Or it shows as electromagnetic interference source and issues with the consistent electromagnetic signal of operating frequency of antenna and by day
Line receives, so as to cause false alarm), to influence whether the normal work of sound magnetic burglary-resisting system.
In order to avoid the electromagnetic interference of electromagnetic interference source, installation site of the existing way in addition to strictly choosing transmitting antenna
It, can be in some unavoidable situations (such as market is without reasonable installation site) to avoid outside electromagnetic interference source
Using the way of the receiving sensitivity for the transmitting sensitivity or receiving antenna for reducing transmitting antenna, but such that sound magnetic is anti-
Theft system substantially reduces to the detection range of the soft label of sound magnetic and (generally drops to 50cm or less), so that it is antitheft to greatly limit sound magnetic
System label soft for sound magnetic matches.And for bar magnet coil hard label normal use, it influences then relatively less.
For example, for vertical sound magnetic burglary-resisting system, when the transmitting antenna of vertical sound magnetic burglary-resisting system is close to metal object
When (such as metal sales counter, metal shelf or the intracorporal reinforcing bar of wall etc.) or the receiving antenna of vertical sound magnetic burglary-resisting system is not close to
When the disconnected electromagnetic interference source for issuing electromagnetic interference signal, the reception of the transmitting sensitivity or receiving antenna that reduce transmitting antenna is taken
The way of sensitivity, can make the width in effective antitheft channel of vertical sound magnetic burglary-resisting system is within 50cm, this is effective in this way
Antitheft channel can only pass through a people simultaneously, be unfavorable for the biggish market of flow of the people and use, to greatly limit the soft mark of sound magnetic
The use of label.And for buried sound magnetic burglary-resisting system, since its transmitting antenna is installed on subsurface, transmitting antenna
Many reinforcing bars of the close subsurface of meeting, and take the receiving sensitivity of the transmitting sensitivity or receiving antenna that reduce transmitting antenna
Way, can make effective antitheft height of buried sound magnetic burglary-resisting system is and the waist of most people in the world within 50cm
Height is 1.2 or so, and most portable cargo height is slightly below waist height (generally in 50cm or more), so that ground
It almost can not normal use for buried burglary-resisting system label soft for sound magnetic.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of sound magnetic burglary-resisting system and its antenna structures, even if leaning on
Nearly electromagnetic interference source is without the sensitivity for reducing antenna, it is ensured that sound magnetic burglary-resisting system to the detection range of the soft label of sound magnetic not
It can be greatly reduced, to be conducive to matching for sound magnetic burglary-resisting system label soft for sound magnetic.
To achieve the goals above, on the one hand, one embodiment of the invention provides a kind of day knot of sound magnetic burglary-resisting system
Structure comprising: antenna body and be made of absorbing material and for absorb first frequency range electromagnetic wave signal suction wave
Layer；
The antenna body has for issuing electromagnetic wave signal to sound Magnetic Sensor and/or receiving the sound magnetic sensing
The first surface for the electromagnetic wave signal that device issues, and have for the second surface towards electromagnetic interference source；The first surface
It is located at the not ipsilateral of the antenna body with the second surface；
The second surface of the antenna body is equipped with the suction wave layer；
Wherein, the first frequency range, it is consistent with the operating frequency range of the antenna body, and with the electromagnetism
The electromagnetic interference frequency range of interference source is consistent.
As an improvement of the above scheme, the electromagnetic interference source has the electromagnetic wave letter for being reflected into the first frequency range
Number ability, then the antenna body be transmitting antenna or transmitting receiving antenna；
Or, the electromagnetic interference source has the ability for issuing the electromagnetic wave signal for the first frequency range, then it is described
Antenna body is receiving antenna or transmitting receiving antenna.
As an improvement of the above scheme, the antenna structure further includes fixed device；The suction wave layer passes through the fixation
Device is fixed on the second surface of the antenna body.
As an improvement of the above scheme, the fixed device includes fixed frame；
The top surface recess of the fixed frame has mounting groove, and the suction wave layer is layed in the bottom in the mounting groove, described
Antenna body is fixed in the mounting groove and is located on the top for inhaling wave layer, and second table of the antenna body
Facing towards the suction wave layer.
As an improvement of the above scheme, the suction wave layer is to inhale made of magnetic permeability μ >=2 Henry/rice absorbing material
Wave layer；Wherein, the absorbing material is Fe powder and insulating materials, Fe-Si powder and insulating materials, Fe-Si-Al powder and insulating materials
Or composite material made of Fe-Ni powder and insulating materials or the absorbing material are Ferrite Material.
As an improvement of the above scheme, the suction wave layer is block structure.
As an improvement of the above scheme, the first frequency range is 20-200kHz.
On the other hand, another embodiment of the present invention provides a kind of sound magnetic burglary-resisting system, including it is described in any of the above embodiments
Antenna structure.
As an improvement of the above scheme, the sound magnetic burglary-resisting system is hidden sound magnetic burglary-resisting system.
As an improvement of the above scheme, the hidden sound magnetic burglary-resisting system is that buried sound magnetic burglary-resisting system or wall are buried
Sound magnetic burglary-resisting system.
Compared with the prior art, the sound magnetic burglary-resisting system provided in an embodiment of the present invention and its antenna structure, by
The antenna body is used to be equipped with the suction wave layer towards the second surface of electromagnetic interference source, and the suction wave layer described in this way can be inhaled
It receives the antenna body and sends electromagnetic wave signal to the electromagnetic interference source, avoid: institute is sent to by the antenna body
The electromagnetic wave signal of electromagnetic interference source is stated, then reflects and interfere with the normal work of the antenna of the sound magnetic burglary-resisting system；
Alternatively, the suction wave layer can absorb the electromagnetic wave signal that the electromagnetic interference source is issued to the antenna body, its influence is avoided
To the normal work of the antenna body.It can be seen that the embodiment of the present invention can be improved the electricity of the antenna of sound magnetic burglary-resisting system
Magnetic reactance interference performance, so that the antenna of sound magnetic burglary-resisting system can work normally close to electromagnetic interference source, without reducing
The sensitivity of the antenna of sound magnetic burglary-resisting system, it is ensured that the detection range of the soft label of sound magnetic will not substantially drop in sound magnetic burglary-resisting system
It is low, to be conducive to matching for sound magnetic burglary-resisting system label soft for sound magnetic.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, attached drawing needed in embodiment will be made below
Simply introduce, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the first sound magnetic burglary-resisting system provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of second of sound magnetic burglary-resisting system provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the third sound magnetic burglary-resisting system provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the 4th kind of sound magnetic burglary-resisting system provided in an embodiment of the present invention；
Fig. 5 is one of structural schematic diagram of the antenna structure of the sound magnetic burglary-resisting system in Fig. 1~4
Fig. 6 is one of scheme of installation of the antenna body of the sound magnetic burglary-resisting system in Fig. 1~4.
Attached drawing mark explanation: 1. antenna bodies；10. first surface；11. second surface；2. inhaling wave layer；3. electromagnetic interference
Source；4. fixed frame；5. transmit circuit；6. receiving circuit；7. control device；8. warning device；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the embodiment of the present invention, it is to be understood that term " on ", "lower", "left", "right", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of the description embodiment of the present invention, rather than the device or component of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the embodiment of the present invention.It should be noted that
What "and/or" indicated is the one of which that can be in "and" and two kinds of juxtaposed conditions of "or".
In addition, term first, second, third, etc. in the specification and in the claims is only used for difference same technique spy
The description purpose of sign is not understood to indicate or imply relative importance or implicitly indicates the number of indicated technical characteristic
Amount, also not necessarily describes order or time sequencing.Term can be interchanged in a suitable case.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.
Currently, electromagnetic interference (electromagnetic interference frequency range and antenna of the electromagnetic interference source to the antenna of sound magnetic burglary-resisting system
Operating frequency range it is consistent) be mainly the following mode:
After 1. electromagnetic wave signal that the transmitting antenna of sound magnetic burglary-resisting system issues reaches electromagnetic interference source, be reflected back and
It is received by the receiving antenna of sound magnetic burglary-resisting system；
2. the transmitting receiving antenna (i.e. the antenna with signal emissivities and reception ability) of sound magnetic burglary-resisting system issues
Electromagnetic wave signal reach electromagnetic interference source after, be reflected back and be launched receiving antenna and receive；
3. electromagnetic interference source issues Electromagnetic Interference signal and is received by the receiving antenna of sound magnetic burglary-resisting system；
4. electromagnetic interference source issues Electromagnetic Interference signal and is received by the transmitting receiving antenna of sound magnetic burglary-resisting system.
It is understood that electromagnetic interference source the electromagnetic interference of the antenna of sound magnetic burglary-resisting system is not limited to it is above-mentioned several
Kind mode can also be other modes, explanation is no longer unfolded one by one herein.
It is corresponding with above-mentioned electromagnetic interference mode, following several embodiments are provided herein:
Embodiment one:
Referring to Fig. 1, the embodiment of the invention provides a kind of sound magnetic burglary-resisting system comprising: it is used for electromagnetic signals
Antenna structure, receiving antenna, the transmit circuit 5 for driving the antenna structure electromagnetic signals, for driving
State reception circuit 6, control device 7 and warning device 8 that receiving antenna receives electromagnetic wave signal.
Wherein, the antenna structure includes: antenna body 1 and is made of absorbing material and is used to absorb first frequency model
The suction wave layer 2 of the electromagnetic wave signal enclosed；The antenna body 1 (for transmitting antenna) has for issuing electricity to sound Magnetic Sensor
The first surface 10 of magnetostatic wave signal, and have for the second surface 11 towards electromagnetic interference source 3；The first surface 10 and institute
It states second surface 11 and is located at the not ipsilateral of the antenna body 1；The second surface 11 of the antenna body 1 is equipped with described
Inhale wave layer 2.In addition, the first frequency range is consistent with the operating frequency range of the antenna body 1；The electromagnetic interference
Source 3 has the ability for the electromagnetic wave signal for reflecting the first frequency range.In this way, when the sound magnetic burglary-resisting system installs
Afterwards, the second surface 11 of the antenna body 1 sends the electromagnetic wave signal to the electromagnetic interference source 3, can be by the suction wave layer 2
It absorbs.
In the present embodiment, pass through setting on the second surface 11 towards electromagnetic interference source 3 in the antenna body 1
Have a suction wave layer 2, in this way it is described inhale wave layer 2 and can absorb the antenna body 1 send electromagnetic wave to the electromagnetic interference source 3
Signal avoids: being sent to the electromagnetic wave signal of the electromagnetic interference source 3 by the antenna body 1, then reflects and interfere
To the normal work of the receiving antenna.It can be seen that the embodiment of the present invention can be improved the electricity of the antenna of sound magnetic burglary-resisting system
Magnetic reactance interference performance, so that the transmitting antenna of sound magnetic burglary-resisting system can work normally close to electromagnetic interference source 3, without
The sensitivity of the transmitting antenna and/or receiving antenna of reduction sound magnetic burglary-resisting system, it is ensured that sound magnetic burglary-resisting system is to the soft mark of sound magnetic
The detection range of label will not be greatly reduced, to be conducive to matching for sound magnetic burglary-resisting system label soft for sound magnetic.
Specifically, the antenna body 1 is opposite with the receiving antenna and interval is arranged, and both erects setting, i.e.,
The sound magnetic burglary-resisting system be vertical sound magnetic burglary-resisting system, and the electromagnetic interference source 3 can for metal safe platform, metal shelf or
Intracorporal reinforcing bar of wall etc..Or the antenna body 1 can also be embedded in the installation pit position on ground with the receiving antenna
The place of hiddens such as in the hollow region in interior, wall installation pit position or on ceiling, that is, the sound magnetic burglary-resisting system
For hidden sound magnetic burglary-resisting system.Wherein, referring to Fig. 6, when the antenna body 1 is embedded in the receiving antenna peace on ground
When in the position of dress hole, the sound magnetic burglary-resisting system is buried sound magnetic burglary-resisting system, and the electromagnetic interference source 3 can be installation pit position
The reinforcing bar of surrounding.When the antenna body 1 is embedded in the installation pit position of wall with the receiving antenna, the electromagnetic interference
Source 3 can be the reinforcing bar around installation pit position.
In addition, it should be noted that, the quantity of the electromagnetic interference source 3 can be one or more, then accordingly,
The quantity of the second surface 11 can be one or more, for example, the top surface of the antenna body 1 is first table
Face 10, when 3 integrated distribution of electromagnetic interference source is under the bottom surface of the antenna body 1, then the bottom surface of the antenna body 1
For the second surface 11.When the electromagnetic interference source 3 is scattered in the bottom surface of the antenna body 1, left side and right side
When outside, then bottom surface, left side and the right side of the antenna body 1 all can be the second surfaces 11.
It is understood that most preferably, the suction wave layer 2 should cover the second surface 11, to ensure the antenna sheet
The second surface 11 of body 1 sends the electromagnetic wave signal to the electromagnetic interference source 3, can be fully absorbed by the suction wave layer 2.When
So, the area for inhaling wave layer 2 can be slightly less than the area of the second surface 11, as long as ensuring the of the antenna body 1
The electromagnetic wave signal that two surfaces 11 issue does not reach the electromagnetic interference source 3 largely.
In this embodiment, it is preferred that the antenna structure further includes fixed device referring to Fig. 5；The suction wave layer 2 is logical
The fixed device is crossed to be fixed on the second surface 11 of the antenna body 1, it in this way can be firm by the suction wave layer 2
Ground is fixed on the antenna body 1, so that entire antenna structure integration, is conducive to the peace to the sound magnetic burglary-resisting system
Dress.Certainly, second table inhaled wave layer 2 and can also be fixed on antenna body 1 by the fixed forms such as pasting or welding
On face 11.
Illustratively, referring to Fig. 5, the fixed device includes fixed frame 4；The top surface recess of the fixed frame 4 has installation
Slot, the suction wave layer 2 are layed in the bottom in the mounting groove, and the antenna body 1 is fixed in the mounting groove and is located at
On the top for inhaling wave layer 2, and the second surface 11 of the antenna body 1 is towards the suction wave layer 2.It is understood that
It is that the fixed device can also include fastener either clamping structure etc., is not specifically limited herein.
In the above-described embodiments, preferably, the suction wave layer 2 of magnetic permeability μ >=2 Henry/rice absorbing material by being made
Suction wave layer so that it is described inhale wave layer 2 have good electromagnetic wave signal absorbability.Wherein, the absorbing material is
Fe powder is made with insulating materials, Fe-Si powder and insulating materials, Fe-Si-Al powder and insulating materials or Fe-Ni powder and insulating materials
Composite material or the absorbing material be Ferrite Material.
In the above-described embodiments, preferably, the suction wave layer 2 is block structure, laminated structure or arc surfaced structure etc.,
This is not specifically limited.
In the above-described embodiments, specifically, the first frequency range is 20-200khz, preferably 58khz.
Embodiment two:
Referring to fig. 2, the embodiment of the invention provides a kind of sound magnetic burglary-resisting system comprising: electromagnetism for transmitting and receiving
The antenna structure of wave signal, the transmit circuit 5 for driving the antenna structure electromagnetic signals, for driving the day
Reception circuit 6, control device 7 and the warning device 8 of cable architecture reception electromagnetic wave signal.
Wherein, the antenna structure includes antenna body 1 and is made of absorbing material and is used to absorb first frequency model
The suction wave layer 2 of the electromagnetic wave signal enclosed；The antenna body 1 (to emit receiving antenna), has for sending out to sound Magnetic Sensor
The first surface 10 of electromagnetic wave signal out, and have for the second surface 11 towards electromagnetic interference source 3；The first surface 10
It is located at the not ipsilateral of the antenna body 1 with the second surface 11；The second surface 11 of the antenna body 1 is equipped with
The suction wave layer 2.In addition, the first frequency range is consistent with the operating frequency range of the antenna body 1；The electromagnetism
Interference source 3 has the ability for the electromagnetic wave signal for reflecting the first frequency range.In this way, when the sound magnetic burglary-resisting system is installed
After good, the second surface 11 of the antenna body 1 sends the electromagnetic wave signal to the electromagnetic interference source 3, can be by the suction wave
Layer 2 absorbs.
In the present embodiment, pass through setting on the second surface 11 towards electromagnetic interference source 3 in the antenna body 1
Have a suction wave layer 2, in this way it is described inhale wave layer 2 and can absorb the antenna body 1 send electromagnetic wave to the electromagnetic interference source 3
Signal avoids: being sent to the electromagnetic wave signal of the electromagnetic interference source 3 by the antenna body 1, then reflects and interfere
To the normal work of the antenna body 1.It can be seen that the embodiment of the present invention can be improved the electricity of the antenna of sound magnetic burglary-resisting system
Magnetic reactance interference performance, so that the antenna of sound magnetic burglary-resisting system can work normally close to electromagnetic interference source 3, without reducing
The sensitivity of the transmitting receiving antenna of sound magnetic burglary-resisting system, it is ensured that sound magnetic burglary-resisting system to the detection range of the soft label of sound magnetic not
It can be greatly reduced, to be conducive to matching for sound magnetic burglary-resisting system label soft for sound magnetic.
It should be noted that the various aspects of the embodiment of the present invention sound magnetic burglary-resisting system can correspond to reference implementation example
Associated description in one, it is no longer repeated herein.
Embodiment three:
Referring to Fig. 3, the embodiment of the invention provides a kind of sound magnetic burglary-resisting system comprising: electromagnetism for transmitting and receiving
The antenna structure of wave signal, the transmit circuit 5 for driving the antenna structure electromagnetic signals, for driving the day
Reception circuit 6, control device 7 and the warning device 8 of cable architecture reception electromagnetic wave signal.
Wherein, the antenna structure includes antenna body 1 and is made of absorbing material and is used to absorb first frequency model
The suction wave layer 2 of the electromagnetic wave signal enclosed；The antenna body 1 (to emit receiving antenna), has and passes for receiving the sound magnetic
The first surface 10 for the electromagnetic wave signal that sensor issues, and have for the second surface 11 towards electromagnetic interference source 3；Described
One surface 10 is located at the not ipsilateral of the antenna body 1 with the second surface 11；The second surface of the antenna body 1
11 are equipped with the suction wave layer 2.In addition, the first frequency range is consistent with the operating frequency range of the antenna body 1；
The electromagnetic interference source 3 has the ability for the electromagnetic wave signal for reflecting the first frequency range.In this way, when the sound magnetic is antitheft
After system installs, the electromagnetic interference source 3 sends the electromagnetic wave signal of the second surface 11 to the antenna body 1, can quilt
The suction wave layer 2 absorbs.
In the present embodiment, pass through setting on the second surface 11 towards electromagnetic interference source 3 in the antenna body 1
There is the suction wave layer 2, the suction wave layer 2 described in this way can absorb the electromagnetic wave that the electromagnetic interference source 3 is issued to the antenna body 1
Signal avoids it from influencing the normal work of the antenna body 1.Prevent it can be seen that the embodiment of the present invention can be improved sound magnetic
The electromagnetism anti-interference ability of the antenna of theft system, so that the antenna of sound magnetic burglary-resisting system can be just close to electromagnetic interference source 3
Often work, the sensitivity of the transmitting receiving antenna without reduction sound magnetic burglary-resisting system, it is ensured that sound magnetic burglary-resisting system is to sound magnetic
The detection range of soft label will not be greatly reduced, to be conducive to matching for sound magnetic burglary-resisting system label soft for sound magnetic.
It should be noted that the various aspects of the embodiment of the present invention sound magnetic burglary-resisting system can correspond to reference implementation example
Associated description in one, it is no longer repeated herein.
Example IV:
Referring to fig. 4, the embodiment of the invention provides a kind of sound magnetic burglary-resisting system comprising: for receiving electromagnetic wave signal
Antenna structure, transmitting antenna 9, the transmit circuit 5 for driving 9 electromagnetic signals of transmitting antenna, for driving
The antenna structure receives reception circuit 6, control device 7 and the warning device 8 of electromagnetic wave signal.
Wherein, the antenna structure includes antenna body 1 and is made of absorbing material and is used to absorb first frequency model
The suction wave layer 2 of the electromagnetic wave signal enclosed；The antenna body 1 (for receiving antenna) has and issues for receiving sound Magnetic Sensor
Electromagnetic wave signal first surface 10, and have for the second surface 11 towards electromagnetic interference source 3；The first surface 10
It is located at the not ipsilateral of the antenna body 1 with the second surface 11；The second surface 11 of the antenna body 1 is equipped with
The suction wave layer 2.In addition, the first frequency range is consistent with the operating frequency range of the antenna body 1；The electromagnetism
Interference source 3 has the ability for the electromagnetic wave signal for issuing the first frequency range.In this way, when the sound magnetic burglary-resisting system is installed
After good, the electromagnetic interference source 3 sends the electromagnetic wave signal of the second surface 11 to the antenna body 1, can be by the suction wave
Layer 2 absorbs.
In the present embodiment, pass through setting on the second surface 11 towards electromagnetic interference source 3 in the antenna body 1
There is the suction wave layer 2, the suction wave layer 2 described in this way can absorb the electromagnetic wave that the electromagnetic interference source 3 is issued to the antenna body 1
Signal avoids it from influencing the normal work of the antenna body 1.Prevent it can be seen that the embodiment of the present invention can be improved sound magnetic
The electromagnetism anti-interference ability of the antenna of theft system, so that the antenna of sound magnetic burglary-resisting system can be just close to electromagnetic interference source 3
Often work, the sensitivity of the transmitting receiving antenna without reduction sound magnetic burglary-resisting system, it is ensured that sound magnetic burglary-resisting system is to sound magnetic
The detection range of soft label will not be greatly reduced, to be conducive to matching for sound magnetic burglary-resisting system label soft for sound magnetic.
It should be noted that the various aspects of the embodiment of the present invention sound magnetic burglary-resisting system can correspond to reference implementation example
Associated description in one, it is no longer repeated herein.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those skilled in the art is in technical scope disclosed by the invention, and any changes or substitutions that can be easily thought of, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of antenna structure of sound magnetic burglary-resisting system characterized by comprising antenna body and be made of absorbing material and
For absorbing the suction wave layer of the electromagnetic wave signal of first frequency range；
The antenna body has for issuing electromagnetic wave signal to sound Magnetic Sensor and/or receiving the sound Magnetic Sensor hair
The first surface of electromagnetic wave signal out, and have for the second surface towards electromagnetic interference source；The first surface and institute
It states second surface and is located at the not ipsilateral of the antenna body；
The second surface of the antenna body is equipped with the suction wave layer；
Wherein, the first frequency range, it is consistent with the operating frequency range of the antenna body, and with the electromagnetic interference
The electromagnetic interference frequency range in source is consistent.
2. the antenna structure of sound magnetic burglary-resisting system according to claim 1, which is characterized in that the electromagnetic interference source has
It is reflected into the ability of the electromagnetic wave signal of the first frequency range, then the antenna body is that transmitting antenna or transmitting receive day
Line；
Or, the electromagnetic interference source have issue be the first frequency range electromagnetic wave signal ability, then the antenna
Ontology is receiving antenna or transmitting receiving antenna.
3. the antenna structure of sound magnetic burglary-resisting system according to claim 1, which is characterized in that further include fixed device；Institute
Suction wave layer is stated to be fixed on the second surface of the antenna body by the fixed device.
4. the antenna structure of sound magnetic burglary-resisting system according to claim 3, which is characterized in that the fixed device includes solid
Determine frame；
The top surface recess of the fixed frame has mounting groove, and the suction wave layer is layed in the bottom in the mounting groove, the antenna
Ontology is fixed in the mounting groove and is located on the top for inhaling wave layer, and the second surface court of the antenna body
To the suction wave layer.
5. the antenna structure of sound magnetic burglary-resisting system according to claim 1, which is characterized in that the suction wave layer is by magnetic conductance
Wave layer is inhaled made of rate μ >=2 Henry/rice absorbing material；Wherein, the absorbing material is Fe powder and insulating materials, Fe-Si powder
With composite material made of insulating materials, Fe-Si-Al powder and insulating materials or Fe-Ni powder and insulating materials or the suction wave material
Material is Ferrite Material.
6. the antenna structure of sound magnetic burglary-resisting system according to claim 1, which is characterized in that the suction wave layer is blocky knot
Structure.
7. the antenna structure of sound magnetic burglary-resisting system according to claim 1, which is characterized in that the first frequency range is
20-200kHz。
8. a kind of sound magnetic burglary-resisting system, which is characterized in that including such as described in any item antenna structures of claim 1-7.
9. sound magnetic burglary-resisting system according to claim 8, which is characterized in that the sound magnetic burglary-resisting system is hidden sound magnetic
Burglary-resisting system.
10. sound magnetic burglary-resisting system according to claim 9, which is characterized in that the hidden sound magnetic burglary-resisting system is ground
Buried sound magnetic burglary-resisting system or the buried sound magnetic burglary-resisting system of wall.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910042946.7A CN109686033A (en) | 2019-01-16 | 2019-01-16 | Sound magnetic burglary-resisting system and its antenna structure |
| PCT/CN2020/071313 WO2020147652A1 (en) | 2019-01-16 | 2020-01-10 | Acoustic magnetic anti-theft system and antenna structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910042946.7A CN109686033A (en) | 2019-01-16 | 2019-01-16 | Sound magnetic burglary-resisting system and its antenna structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109686033A true CN109686033A (en) | 2019-04-26 |
Family
ID=66193386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910042946.7A Pending CN109686033A (en) | 2019-01-16 | 2019-01-16 | Sound magnetic burglary-resisting system and its antenna structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109686033A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020147652A1 (en) * | 2019-01-16 | 2020-07-23 | 广州齐达材料科技有限公司 | Acoustic magnetic anti-theft system and antenna structure thereof |
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