CN106600878A - Near field electromagnetic wave antitheft system and control method thereof - Google Patents
Near field electromagnetic wave antitheft system and control method thereof Download PDFInfo
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- CN106600878A CN106600878A CN201611251815.2A CN201611251815A CN106600878A CN 106600878 A CN106600878 A CN 106600878A CN 201611251815 A CN201611251815 A CN 201611251815A CN 106600878 A CN106600878 A CN 106600878A
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- microprocessor
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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
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Electromagnetism (AREA)
- Burglar Alarm Systems (AREA)
- Alarm Systems (AREA)
Abstract
A near field electromagnetic wave antitheft system comprises an emission module, a reflection module, a receive module and an alarm module; the emission module comprises an electromagnetic wave signal-generator, a power amplifier and an electromagnetic wave emitter; the reflection module comprises a electromagnetic wave reflector; the receive module comprises an electromagnetic wave receiver, an analog-to-digital converter and a microprocessor; the alarm module comprises a vibration alarm assembly and a sound alarm assembly; electric signal synchronization is realized between the emission module and the analog-to-digital converter; the microprocessor can calculate the distance between the reflection module and the receive module according to the information provided by the analog-to-digital converter, and sends a first level alarm signal, a second level alarm signal and a third level alarm signal to the alarm module according to the calculated distance. The alarm signals of different levels are realized by the vibration alarm assembly and the sound alarm assembly.
Description
Technical field
The present invention relates to electronic technology field, burglar alarm, more particularly to a kind of electromagnetic wave theft prevention system and its control
Method.
Background technology
Corresponding Countermeasures are proposed for existing some Virtual network operators of antitheft problem, fingerprint, voice recognition is such as added, is taken the photograph
Picture, GPS, bluetooth, radio function.But make a general survey of these anti-theft features, all can only achieve passive prevention to a certain extent other people
Take infringement of the illegal means to itself finance, or the clue recovered after offer is stolen；But now loss has resulted in,
It is difficult to retrieve, to preventing finance from losing without positive meaning.So we are it would be desirable to provide one kind actively allows other people to have active release
Abandon and illegally commit theft or property is reminded in time owner equipment during illegal infringement, in order to reduce the incidence rate of thievery, to big
Crowd provides safety guarantee, develops a kind of simple and reliable, easy to operate, and the peace of anti-theft alarm can be sent in the case where abnormal conditions is found
Total system has practical significance.
The content of the invention
Present invention solves the technical problem that being to overcome Shortcomings in above-mentioned prior art and provide a kind of near field electromagnetic
Ripple burglary-resisting system and its control method.
A kind of near field electromagnetic ripple burglary-resisting system, including transmitter module, reflecting module, receiver module and alarm modules；It is described
Transmitter module includes electromagnetic wave signal generator, power amplifier and electromagnetic wave transmitter；The reflecting module includes electromagnetic wave
Reflector；The receiver module includes electromagnetic wave receiver, analog-digital converter and microprocessor；The alarm modules include vibration
Alert component, audio alarm component；
Pass through signal of telecommunication synchronization between the transmitter module and the receiver module；The electromagnetic wave signal generator it is defeated
Go out the input that end is connected into the power amplifier, the outfan connection electromagnetic wave transmitter of the power amplifier；It is described anti-
Penetrate module for by the electromagnetic radiation its transmitting reflection of electromagnetic wave give the electromagnetic wave receiver；The electromagnetic wave is received
The outfan of device connects the input of the analog-digital converter, and the outfan of the analog-digital converter connects the microprocessor
Input, the outfan of the microprocessor connects the alarm modules；
The electromagnetic wave signal generator is used to launch the electromagnetic wave of characteristic frequency, two is provided with the transmitter module and is sent out
The electromagnetic wave signal generator of different frequency electromagnetic wave is penetrated, is strengthened to external world to the resistance of Electromagnetic Interference.
The analogue signal for receiving is converted into digital signal and is sent to the microprocessor by the analog-digital converter, institute
State microprocessor for according to the signal of change of the analog-digital converter reflecting module to the electromagnetic wave receiver away from
From, and the first estate alarm signal, the second grade alert letter are sent out to the alarm modules according to the distance for calculating
Number and tertiary gradient alarm signal, the vibration alarm component carries out vibrations warning according to the first estate alarm signal,
The audio alarm component carries out alternative sounds according to the second grade alert signal and the tertiary gradient alarm signal
The warning of decibel ratings.
It is further preferred that the transmitter module, the receiver module and the alarm modules be integrally disposed in it is anti-stolen
The outer surface of object, the reflecting module prevents that stolen object is arranged according to preset distance with described.
It is further preferred that define the reflecting module to the initial distance of the electromagnetic wave receiver be L, it is and described
Reflecting module is to the actual range D between the electromagnetic wave signal receptor；
As 30cm >=D-L>During 3cm, the microprocessor computing module to the alarm modules send out the first estate police
The number of notifying, the vibration alarm component carries out vibrations warning according to the first estate alarm signal；As 50cm >=D-L>30cm
When, the microprocessor computing module to the alarm modules send out the second grade alert signal, the audio alarm component
Warning prompt sound less than 50 decibels is carried out according to the second grade alert signal；Work as D-L>During 50cm, the microprocessor
Computing module to the alarm modules send out tertiary gradient alarm signal, and the audio alarm component is according to the tertiary gradient
Alarm signal carries out the warning prompt sound higher than 80 decibels.
A more suitable distance setting in the interval only embodiment of the present invention of the above distance, user can
So that according to the present invention, the specifically used of near field electromagnetic ripple burglary-resisting system makes the interval adjusted design of distance.
It is further preferred that this near field electromagnetic ripple burglary-resisting system also includes energy module and control module, the energy mould
Block is the transmitter module, the receiver module and the alarm modules provide energy；The control module is used to control near field
Electromagnetic wave theft prevention system start-up and closing.The energy module can be battery, and the control module can directly by control
Battery is controlling the startup of burglary-resisting system and close, it is also possible to control burglary-resisting system by controlling transmitter module and receiver module
Startup with close.The energy module and the control module can be with the transmitter module, receiver module, alarm modules collection
Into together, on the object for use in the on-fixed such as wallet, luggage case place.
It is further preferred that define the reflecting module to the initial distance of the electromagnetic wave receiver be L, it is and described
Reflecting module is to the actual range D between the electromagnetic wave receiver；As -50cm≤D-L<During -3cm, the microprocessor fortune
Calculate module and send out the second grade alert signal to the alarm modules, the audio alarm component is warned according to second grade
The number of notifying carries out the warning prompt sound less than 50 decibels；Work as D-L<During -50cm, the microprocessor computing module is to the alarm
Module sends out tertiary gradient alarm signal, and the audio alarm component is carried out higher than 80 according to the tertiary gradient alarm signal
The warning prompt sound of decibel.
It is further preferred that the near field electromagnetic ripple burglary-resisting system further includes wireless transmitter module for pacifying with internal
Insurance system or the contact of outside security system, when the microprocessor computing module, to send out the to the vibration alarm component third
During level alarm signal, the microprocessor computing module launches warning signal to the wireless transmitter module simultaneously, described wireless
According to the warning signal, internally security system or outside security system send alarm to transmitter module.
Described inside security system can be that at the security of cell or company, outside security system can be police office.
It is further preferred that the alarm modules further include light alert component, for being warned according to described the first estate
The number of notifying, the second grade alert signal and the tertiary gradient alarm signal send the alarm light of different colours.
It is further preferred that using this near field electromagnetic ripple burglary-resisting system it is described prevent stolen object for can be the art work,
Safety cabinet etc. is placed on the article of fixed position；Can also be automobile, luggage case, the ambulant article such as wallet.
The present invention also provides a kind of control method of near field electromagnetic ripple burglary-resisting system, comprises the following steps：
S1：There is module by the power amplification and electromagnetic radiation module and the transmitting antenna in the electromagnetic wave
To the reflecting module electromagnetic signals；
S2：The reception antenna receives the electromagnetic wave signal of reflection, and is fed back to the microprocessor computing module；
S3：The microprocessor computing module calculates the reflecting module to described according to the electromagnetic wave signal of the reflection
The distance between reception antenna, and according to the distance to the alarm modules send out the first estate alarm signal, second etc.
Level alarm signal and tertiary gradient alarm signal；
S4：The vibration alarm component carries out respectively different grades of warning according to different brackets alarm signal.
It is further preferred that the near field electromagnetic ripple burglary-resisting system further includes wireless transmitter module for pacifying with internal
Insurance system or outside security system contact, the control method is further included：
When the microprocessor sends out tertiary gradient alarm signal to the vibration alarm component, the microprocessor
Launch alarm signal to the wireless transmitter module simultaneously, the wireless transmitter module is according to the alarm signal internally security
System or outside security system send alarm.
Compared with prior art, the present invention has following beneficial effect：1. the present invention by the transmitting of electromagnetic wave signal,
Launch, receive to judge the situation of movement of protected object body, so as to whether judgment object is stolen and controls to report to the police, system cost
Low, energy consumption is little, is not affected by object space, is difficult, by external environmental interference, to be difficult person thefted and realize in advance and destroy, and prevents
Steal performance good, easily realize；
2. when thief movement be provided with the object of the near field electromagnetic ripple burglary-resisting system when, the system will according to it is different away from
From judging that different grade alert signals carry out respectively different grades of warning, when banditry occurs, by vibration, dodge
Light, the raising of sound decibel give alert step by step, make thief produce crisis awareness, allow it actively to abandon the thought stolen,
Pre- robber's object is returned to original position or directly puts down object and abandons illegally committing theft；Or making owner obtain status information in time, this is right
Robber is effectively driven, has certain effect to improving the rate of being stolen.
3. the system can be switched using Miniature Power Unit is carried, and being conveniently used for some needs movement to have more important thing
Product, such as luggage case, wallet, automobile etc..
4. the system is provided with wireless transmitter module, and emergency is occurring, and the very first time starts internal safety-protection system scheme,
Related personnel's emergent management is notified, dangerous continuation is as much as possible reduced and is occurred, and notify external community security personnel in time, 110 etc.
It is rapid to support.Electromagnetic wave good directionality, ray can be become and direction propagation.
Description of the drawings
Fig. 1 is the overall structure diagram of the nearly electric field electromagnetic wave theft prevention system of the embodiment of the present invention.
Fig. 2 is the application schematic diagram of the embodiment of the present invention shown in Fig. 1.
Fig. 3 is the structural representation of the nearly electric field electromagnetic wave theft prevention system of another embodiment of the present invention.
Main element symbol description
Transmitter module 100
Reflecting module 200
Receiver module 300
Alarm modules 400
Energy module 500
Control module 600
Electromagnetic wave signal generator 110
Power amplifier 120
Magnetic wave emitter 130
Electromagnetic radiation reflector 210
Electromagnetic wave receiver 310
Analog-digital converter 320
Microprocessor 330
Vibration alarm component 410
Audio alarm component 420
Light alert component 430
Specific embodiment
Further details of elaboration is done to the present invention below in conjunction with accompanying drawing.
As shown in figure 1, a kind of near field electromagnetic ripple burglary-resisting system, including transmitter module 100, reflecting module 200, reflecting module
200 and alarm modules 400；The transmitter module 100 includes electromagnetic wave signal generator 110, power amplifier 120 and electromagnetic wave
Emitter 130；The reflecting module 200 includes electromagnetic radiation reflector 210；The receiver module include electromagnetic wave receiver 310,
Analog-digital converter 320 and microprocessor 330；The alarm modules 400 include vibration alarm component 410, audio alarm component
420；
Pass through signal of telecommunication synchronization between the transmitter module 100 and the reflecting module 200；The electromagnetic wave signal occurs
The outfan of device 110 is connected into the input of the power amplifier 120, the outfan connection electromagnetism of the power amplifier 120
Wave launcher 130；The reflecting module 200 be used for by the electromagnetic radiation its transmitting reflection of electromagnetic wave give the electromagnetic wave
Receptor 310；The outfan of the electromagnetic wave receiver 310 connects the input of the analog-digital converter 320, and the modulus turns
The outfan of parallel operation 320 connects the input of the microprocessor 330, and the outfan of the microprocessor 330 connects the police
Report module 400；
The electromagnetic wave signal generator 110 is used to launch the electromagnetic wave of characteristic frequency, is provided with the transmitter module 100
2～3 electromagnetic wave signal generators 110.
The analogue signal for receiving is converted into digital signal and is sent to the microprocessor by the analog-digital converter 320
330, the microprocessor 330 is used for the reflecting module 200 according to the signal of change of the analog-digital converter 320 and arrives the electricity
The distance of magnetic wave receptor 310, and the first estate alarm is sent out to the alarm modules 400 according to the distance for calculating
Signal, the second grade alert signal and tertiary gradient alarm signal, the vibration alarm component 410 is according to described the first estate
Alarm signal carries out vibrations warning, and the audio alarm component 420 is according to the second grade alert signal and the described 3rd
Grade alert signal carries out the warning of alternative sounds decibel ratings.
In embodiment 1：The transmitter module 100, the reflecting module 200 and the alarm modules 400 are integrally disposed
In the outer surface of safety cabinet, the reflecting module 200 prevents that stolen object is arranged according to preset distance with described.
Security settings one：Define the reflecting module 200 to the electromagnetic wave receiver 310 initial distance be L, and
The actual range D that the reflecting module 200 is arrived between the electromagnetic wave signal receptor；
As 30cm >=D-L>During 3cm, the microprocessor computing module sends out the first estate to the alarm modules 400
Alarm signal, the vibration alarm component 410 carries out vibrations warning according to the first estate alarm signal；As 50cm >=D-L>
During 30cm, the microprocessor computing module to the alarm modules 400 send out the second grade alert signal, the sound police
Report component 420 sends 40 decibels of warning prompt sound according to the second grade alert signal；Work as D-L>During 50cm, micro- place
Reason device computing module sends out tertiary gradient alarm signal to the alarm modules 400, and the audio alarm component 420 is according to institute
State the warning prompt sound that tertiary gradient alarm signal sends 90 decibels.
Security settings two：Define the reflecting module 200 to the electromagnetic wave receiver initial distance be L, Yi Jisuo
Reflecting module 200 is stated to the actual range D between the electromagnetic wave receiver 310；
As -50cm≤D-L<During -3cm, the microprocessor computing module sends out second etc. to the alarm modules 400
Level alarm signal, the audio alarm component 420 sends 40 decibels of warning prompt sound according to the second grade alert signal；
Work as D-L<During -50cm, the microprocessor computing module to the alarm modules 400 send out tertiary gradient alarm signal, institute
State the warning prompt sound that audio alarm component 420 sends 90 decibels according to the tertiary gradient alarm signal.
Security settings three：The near field electromagnetic ripple burglary-resisting system further includes that wireless transmitter module 100 is used for and inside
Security system or outside security system contact, when the microprocessor computing module sends out to the vibration alarm component 410
During tertiary gradient alarm signal, the microprocessor computing module launches warning signal to the wireless transmitter module 100 simultaneously,
According to the warning signal, internally security system or outside security system send alarm to the wireless transmitter module 100.
Described inside security system can be that at the security of cell or company, outside security system can be police office.
Security settings four：The alarm modules 400 further include light alert component 430, for according to described first etc.
Level alarm signal, the second grade alert signal and the tertiary gradient alarm signal are same vibration or audio alarm
When send the alarm light of different colours.
In example 2：This near field electromagnetic ripple burglary-resisting system also includes energy module 500 and control module 600, the energy
Source module 500 is that the transmitter module 100, the reflecting module 200 and the alarm modules 400 provide energy；The control
Module 600 is used to control the startup of near field electromagnetic ripple burglary-resisting system and close.The energy module 500 can be battery, the control
Molding block 600 directly can control the startup of burglary-resisting system by controlling battery and close, it is also possible to by control transmitting mould
Block 100 and reflecting module 200 are controlling the startup of burglary-resisting system and close.
The energy module and the control module 600 and the transmitter module 100, reflecting module 200, alarm modules
400 integrate, and are fixed on wallet；The reflecting module 200 is set to a key chain, buckles in loins or is placed on mouth
In bag.After leaving reflecting module 30cm after wallet is stolen by other people, alarm modules 400 send vibration prompt；Leave reflection
After module 35cm, alarm modules 400 send 35 decibels of alarm sounds sound；After leaving reflecting module 50cm, alarm modules 400
Go out 95 decibels of alarm sounds sound.
A kind of control method of near field electromagnetic ripple burglary-resisting system, comprises the following steps：
S1：There is module by the power amplification and electromagnetic radiation module 100 and the transmitting in the electromagnetic wave
Antenna is to the electromagnetic signals of the reflecting module 200；
S2：The reception antenna receives the electromagnetic wave signal of reflection, and is fed back to the microprocessor computing module；
S3：The microprocessor computing module calculates the reflecting module 200 and arrives according to the electromagnetic wave signal of the reflection
The distance between described reception antenna, and according to the distance to the alarm modules 400 send out the first estate alarm signal,
Second grade alert signal and tertiary gradient alarm signal；And
S4：The vibration alarm component 410 carries out respectively different grades of warning according to different brackets alarm signal.
The near field electromagnetic ripple burglary-resisting system also includes that wireless transmitter module 100 is used for and internal security system or outside peace
Insurance system is contacted, and the control method is further included：
When the microprocessor sends out tertiary gradient alarm signal to the vibration alarm component 410, micro- place
Reason device launches alarm signal to the wireless transmitter module 100 simultaneously, and the wireless transmitter module 100 is according to the alarm signal
Internally security system or outside security system send alarm.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (10)
1. a kind of near field electromagnetic ripple burglary-resisting system, it is characterised in that：Including transmitter module, reflecting module, receiver module and alarm
Module；The transmitter module includes electromagnetic wave signal generator, power amplifier and electromagnetic wave transmitter；The reflecting module bag
Include electromagnetic radiation reflector；The receiver module includes electromagnetic wave receiver, analog-digital converter, microprocessor；The alarm modules
Including vibration alarm component, audio alarm component；
Pass through signal of telecommunication synchronization between the transmitter module and the receiver module；The outfan of the electromagnetic wave signal generator
It is connected into the input of the power amplifier, the outfan connection electromagnetic wave transmitter of the power amplifier；The reflection mould
Block be used for by the electromagnetic radiation its transmitting reflection of electromagnetic wave give the electromagnetic wave receiver；The electromagnetic wave receiver
Outfan connects the input of the analog-digital converter, and the outfan of the analog-digital converter connects the input of the microprocessor
End, the outfan of the microprocessor connects the alarm modules；
The analogue signal for receiving is converted into digital signal and is sent to the microprocessor by the analog-digital converter, described micro-
Processor be used for according to the signal of change of the analog-digital converter reflecting module to the electromagnetic wave receiver distance, and
According to the distance for calculating to the alarm modules send out the first estate alarm signal, the second grade alert signal and
Tertiary gradient alarm signal, the vibration alarm component carries out vibrations warning, the sound according to the first estate alarm signal
Tone alerts component carries out alternative sounds decibel etc. according to the second grade alert signal and the tertiary gradient alarm signal
The warning of level.
2. near field electromagnetic ripple burglary-resisting system according to claim 1, it is characterised in that：The transmitter module, the reception
Module and the alarm modules are integrally disposed in the outer surface of anti-stolen object, and the reflecting module prevents that stolen object is pressed with described
Arrange according to preset distance.
3. near field electromagnetic ripple burglary-resisting system according to claim 2, it is characterised in that：The reflecting module is defined to described
The initial distance of electromagnetic wave receiver is L, and the reflecting module between the electromagnetic wave signal receptor actually away from
From D；As 30cm >=D-L>During -5cm, the microprocessor computing module sends out the first estate alarm signal to the alarm modules
Number, the vibration alarm component carries out vibrations warning according to the first estate alarm signal；As 50cm >=D-L>During 30cm, institute
State microprocessor computing module and send out the second grade alert signal to the alarm modules, the audio alarm component is according to institute
Stating the second grade alert signal carries out being less than 50 decibels of warning prompt sound；Work as D-L>During 50cm, the microprocessor computing mould
Block to the alarm modules send out tertiary gradient alarm signal, and the audio alarm component is according to the tertiary gradient alarm signal
Number carry out the warning prompt sound higher than 80 decibels.
4. near field electromagnetic ripple burglary-resisting system according to claim 2, it is characterised in that：Also include energy module and control mould
Block, the energy module is the transmitter module, the receiver module and the alarm modules provide energy；The control module
Start and closing for controlling near field electromagnetic ripple burglary-resisting system.
5. near field electromagnetic ripple burglary-resisting system according to claim 3, it is characterised in that：The reflecting module is defined to described
The initial distance of electromagnetic wave receiver is L, and the reflecting module is to the actual range D between the electromagnetic wave receiver；
As -50cm≤D-L<During -3cm, the microprocessor computing module to the alarm modules send out the second grade alert signal,
The audio alarm component carries out the warning prompt sound less than 50 decibels according to the second grade alert signal；Work as D-L<-
During 50cm, the microprocessor computing module to the alarm modules send out tertiary gradient alarm signal, the audio alarm
Component carries out the warning prompt sound higher than 80 decibels according to the tertiary gradient alarm signal.
6. near field electromagnetic ripple burglary-resisting system according to claim 5, it is characterised in that：Further include wireless transmitter module
For contacting with internal security system or outside security system, when the microprocessor computing module is to the vibration alarm component
When sending out tertiary gradient alarm signal, the microprocessor computing module is simultaneously to wireless transmitter module transmitting alarm letter
Number, according to the warning signal, internally security system or outside security system send alarm to the wireless transmitter module.
7. near field electromagnetic ripple burglary-resisting system according to claim 1, it is characterised in that：The alarm modules are further included
Light alert component, for according to the first estate alarm signal, the second grade alert signal and the tertiary gradient
Alarm signal sends the alarm light of different colours.
8. near field electromagnetic ripple burglary-resisting system according to claim 2, it is characterised in that：It is described to prevent that stolen object includes art
Product and safety cabinet.
9. a kind of control method of near field electromagnetic ripple burglary-resisting system as claimed in claim 1, comprises the following steps：
S1：The electromagnetic wave signal generator is by the power amplifier and the electromagnetic wave transmitter to the reflection mould
Block electromagnetic signals；
S2：The electromagnetic wave signal of the electromagnetic wave receiver reflection, and signal is fed back to into described by the analog-to-digital conversion device
Microprocessor；
S3：The microprocessor computing module calculates the reflecting module to the electromagnetism according to the electromagnetic wave signal of the reflection
The distance between ripple signal receiver, and according to the distance to the alarm modules send out the first estate alarm signal,
Two grade alarm signals and tertiary gradient alarm signal；
S4：The vibration alarm component carries out respectively different grades of warning according to different brackets alarm signal.
10. control method according to claim 9, it is characterised in that：The near field electromagnetic ripple burglary-resisting system is further wrapped
Wireless transmitter module is included for contacting with internal security system or outside security system, the control method is further included：
When the microprocessor sends out tertiary gradient alarm signal to the vibration alarm component, the microprocessor is simultaneously
Launch alarm signal to the wireless transmitter module, the wireless transmitter module is according to the alarm signal internally security system
Or outside security system sends alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251815.2A CN106600878B (en) | 2016-12-30 | 2016-12-30 | A kind of near field electromagnetic wave burglary-resisting system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251815.2A CN106600878B (en) | 2016-12-30 | 2016-12-30 | A kind of near field electromagnetic wave burglary-resisting system and its control method |
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| Publication Number | Publication Date |
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| CN106600878A true CN106600878A (en) | 2017-04-26 |
| CN106600878B CN106600878B (en) | 2019-08-02 |
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| CN201611251815.2A Expired - Fee Related CN106600878B (en) | 2016-12-30 | 2016-12-30 | A kind of near field electromagnetic wave burglary-resisting system and its control method |
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| Publication number | Publication date |
|---|---|
| CN106600878B (en) | 2019-08-02 |
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