CN204597979U - Intelligent whole frequency band mobile phone shielding system - Google Patents
Intelligent whole frequency band mobile phone shielding system Download PDFInfo
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- CN204597979U CN204597979U CN201520270428.8U CN201520270428U CN204597979U CN 204597979 U CN204597979 U CN 204597979U CN 201520270428 U CN201520270428 U CN 201520270428U CN 204597979 U CN204597979 U CN 204597979U
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Abstract
A kind of Intelligent whole frequency band mobile phone shielding system, comprises at least one signal sampling module, master controller and signal shielding module; Signal sampling module comprises sampling antenna, low noise amplifier, front radio-frequency switches set, band-pass filter group, attenuator group, demodulator, low pass filter, analog to digital converter from being input to output and connecting successively, analog to digital converter connects the input of master controller, and the output of master controller connects following parts successively according to outputting to input again: digital to analog converter group, vco bank, rear end radio-frequency (RF) switch group, demodulator; Signal shielding module comprises the following parts according to being input to output and connecting successively: digital to analog converter group, vco bank, attenuator group, power amplifier group, radio-frequency (RF) switch group and signal transmitting antenna, the output of master controller connects described digital to analog converter group.Native system low-power consumption, low cost, electromagnetic pollution are little, intelligent, without wrong report.
Description
Technical field
The utility model relates to a kind of mobile phone shielding system, especially a kind of Intelligent whole frequency band mobile phone shielding system.
Background technology
Great majority need the special occasions shielding mobile phone signal to select to install mobile communication shielding device, but common cell phone shielding device
Exist easily aging, occur dead angle, non intelligent cannot automatic alarm, the insurmountable drawback problems such as Misuse mobile phone location, power consumption large volume be huge cannot be determined.
(1) existing mobile phone shielding system major technique is still based on the shielding interference signal initiatively sending all setting band communication signals of shielding, as long as sequential filming power is large, radiation large and unlatching just can continue to send radiation, the personnel that are managed easily are caused to complain.
(2) long-term non-stop run in 24 hours round the clock, the universal shield device that some unit is installed can become near or device damage gradually due to the long aging too fast screening range that causes of shielding device that causes of operating time, occurs that opportunity is caused to illegal personnel in shielding dead angle.
The mobile phone shielding device that uninterrupted usage quantity was huge all the year round in (3) 24 hours, can add the management cost of supervision unit equally because of huge power consumption.
In view of this, special proposition the utility model.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of low in energy consumption, not easily aging and unmanned Intelligent whole frequency band mobile phone shielding system not producing the small volume of electromagnetic interference when sending illegal signal.
For solving the problems of the technologies described above, the basic conception of the utility model employing technical scheme is:
A kind of Intelligent whole frequency band mobile phone shielding system, comprise Surveillance center, described Surveillance center comprises at least one signal sampling module, master controller and signal shielding module;
Described signal sampling module comprises sampling antenna, low noise amplifier, front radio-frequency switches set, band-pass filter group, attenuator group, demodulator, low pass filter, analog to digital converter, digital to analog converter group, vco bank and rear end radio-frequency (RF) switch group;
The annexation of described signal sampling module is: the output of described sampling antenna connects the input of described low noise amplifier, the output of described low noise amplifier connects one end of each radio-frequency (RF) switch in described front radio-frequency switches set, the input of each band pass filter in described front radio-frequency switches set in the other end of each radio-frequency (RF) switch and described band-pass filter group connects one to one, the input of each attenuator in the output of each described band pass filter and described attenuator group connects one to one, the output of each described attenuator is all connected with the input of described demodulator, the output of described demodulator connects the input of described low pass filter, the output of described low pass filter connects the input of described master controller by described analog to digital converter, each output of described master controller connects one to one respectively by the input of each digital to analog converter in described digital to analog converter group and each voltage controlled oscillator in described vco bank, one end of each radio-frequency (RF) switch in the output of each described voltage controlled oscillator and described rear end radio-frequency (RF) switch group connects one to one, in the radio-frequency (RF) switch group of described rear end, the other end of each radio-frequency (RF) switch connects the input of described demodulator,
Described signal shielding module comprises digital to analog converter group, vco bank, attenuator group, power amplifier group, radio-frequency (RF) switch group and signal transmitting antenna;
The annexation of described signal shielding module is: each output of described master controller is connected one to one by the input of each digital to analog converter in described digital to analog converter group and each voltage controlled oscillator in described vco bank, the input of each attenuator in the output of each described voltage controlled oscillator and described attenuator group connects one to one, the input of each power amplifier in the output of each described attenuator and described power amplifier group connects one to one, one end of each radio-frequency (RF) switch in the output of each described power amplifier and described radio-frequency (RF) switch group connects one to one, the other end of each described radio-frequency (RF) switch connects the input of described signal transmitting antenna.
Preferably, in the front radio-frequency switches set in described signal sampling module in the quantity of radio-frequency (RF) switch, band-pass filter group in the quantity of band pass filter, attenuator group in the quantity of attenuator, digital to analog converter group in the quantity of digital to analog converter, vco bank in the quantity of voltage controlled oscillator and rear end radio-frequency (RF) switch group the quantity of radio-frequency (RF) switch equal;
In described digital to analog converter group in described signal shielding module in the quantity of digital to analog converter, vco bank in the quantity of voltage controlled oscillator, attenuator group in the quantity of attenuator, the quantity of power amplifier group intermediate power amplifier and radio-frequency (RF) switch group the quantity of radio-frequency (RF) switch equal.
Preferably, in described signal sampling module, in front radio-frequency switches set, the quantity of radio-frequency (RF) switch is three, and in radio-frequency (RF) switch group described in described signal shielding module, the quantity of radio-frequency (RF) switch is four.
Preferably, described signal sampling module is two.
Further, also comprise command centre, described command centre comprises command centre's controller, and the output of described command centre controller connects the input of described master controller, and the output of described master controller connects the input of described command centre controller.
Further, also comprise the intercom being built-in with GPS transceiver module, described command centre is built-in with GPS transceiver module, described intercom and the wireless connections of described command centre.
Further, also comprise the video frequency pick-up head being arranged on mobile phone forbidden zone, the output of described video frequency pick-up head connects the input of described command centre controller.
Further, described command centre also comprises the wireless signal transmission module be connected with described command centre controller;
Also comprise the remote monitoring center with wireless signal transmission module, described remote monitoring center is connected by wireless network with described command centre.
Further, described Surveillance center also comprises the wireless signal transceiver module be connected with described master controller, and described command centre is connected by wireless network with described Surveillance center.
Preferably, described master controller is Programmable Logic Controller.
After adopting technique scheme, the utility model compared with prior art has following beneficial effect:
Native system carries out frequency-division section detection, frequency-division section signal disturbing; Shield device at ordinary times and be in holding state not power consumption, it is low that signal acquisition module is operated in investigation state power pole, alleviates electromagnetic pollution, saves the energy, to reduce costs, and not easily aging, improves native system useful life.
Accompanying drawing explanation
Fig. 1 is a hardware principle block diagram of Intelligent whole frequency band mobile phone shielding system.
In figure:
First passage:
First sampling analog to digital converter-8, low pass filter-7, demodulator-6, band-pass filter group-4 first attenuator group-5, low noise amplifier-2 first front radio-frequency switches set-3, antenna-1 master controller--9 first radio-frequency (RF) switch group-12, digital to analog converter group-10 first vco bank-11 first rear end
Second channel:
Second sampling radio-frequency (RF) switch group-23, antenna-13 second low noise amplifier-14 second front radio-frequency switches set-15 second band-pass filter group-16 second attenuator group-17 second demodulator-18 second low pass filter-19 second analog to digital converter-20 second digital to analog converter group-21 second vco bank-22 second rear end
Described signal shielding module:
3rd power amplifier group-27 the 3rd radio-frequency (RF) switch group-28, digital to analog converter group-24 the 3rd vco bank-25 the 3rd attenuator group-26 signal transmitting antenna--29
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, to help understanding content of the present utility model.
As shown in Figure 1, a kind of Intelligent whole frequency band mobile phone shielding system, comprises the signal sampling module of two passages, master controller 9 (can adopt Programmable Logic Controller) and signal shielding module;
The signal sampling module of first passage comprises the first sampling antenna 1, low noise amplifier 2, first front radio-frequency switches set 3, band-pass filter group 4, first attenuator group 5, demodulator 6, low pass filter 7, analog to digital converter 8, first digital to analog converter group 10, first vco bank 11 and the first rear end radio-frequency (RF) switch group 12;
The annexation of the signal sampling module of first passage is: the output of described first sampling antenna 1 connects the input of described low noise amplifier 2, the output of described low noise amplifier 2 connects one end of each radio-frequency (RF) switch in described first front radio-frequency switches set 3, the input of each band pass filter in the other end of each described radio-frequency (RF) switch and described band-pass filter group 4 connects one to one, the input of each attenuator in the output of each described band pass filter and described first attenuator group 5 connects one to one, the output of each described attenuator is all connected with the input of described demodulator 6, the output of described demodulator 6 connects the input of described low pass filter 7, the output of described low pass filter 7 connects the input of described master controller 9 by described analog to digital converter 8, each output of described master controller 9 connects one to one respectively by the input of each voltage controlled oscillator in each digital to analog converter in described first digital to analog converter group 10 and described first vco bank 11, one end of each radio-frequency (RF) switch in the output of each described voltage controlled oscillator and described first rear end radio-frequency (RF) switch group 12 connects one to one, the other end of each described radio-frequency (RF) switch connects the input of described demodulator 6,
The signal sampling module of second channel comprises the second sampling antenna 13, second low noise amplifier 14, second front radio-frequency switches set 15, second band-pass filter group 16, second attenuator group 17, second demodulator 18, second low pass filter 19, second analog to digital converter 20, second digital to analog converter group 21, second vco bank 22 and the second rear end radio-frequency (RF) switch group 23;
The sample output of antenna 13 of the signal sampling module second of second channel connects the input of described second low noise amplifier 14, the output of described second low noise amplifier 14 connects one end of each radio-frequency (RF) switch in described second front radio-frequency switches set 15, the input of each band pass filter in the other end of each described radio-frequency (RF) switch and described second band-pass filter group 16 connects one to one, the input of each attenuator in the output of each described band pass filter and described second attenuator group 17 connects one to one, the output of each described attenuator is all connected with the input of described second demodulator 18, the output of described second demodulator 18 connects the input of described second low pass filter 19, the output of described second low pass filter 19 connects the input of described master controller 9 by described second analog to digital converter 20, each output of described master controller 9 connects one to one respectively by the input of each voltage controlled oscillator in each digital to analog converter in described second digital to analog converter group 21 and described second vco bank 22, one end of each radio-frequency (RF) switch in the output of each described second oscillator and described second rear end radio-frequency (RF) switch group 23 connects one to one, the other end of each described radio-frequency (RF) switch connects the input of described second demodulator 18,
Described signal shielding module comprises the 3rd digital to analog converter group 24, the 3rd vco bank 25, the 3rd attenuator group 26, power amplifier group 27, the 3rd radio-frequency (RF) switch group 28 and signal transmitting antenna 29;
The annexation of described signal shielding module is: each output of described master controller 9 is connected one to one by the input of each voltage controlled oscillator in each digital to analog converter in described 3rd digital to analog converter group 24 and described 3rd vco bank 25, the input of each attenuator in the output of each described voltage controlled oscillator and described 3rd attenuator group 26 connects one to one, the input that the output of each described attenuator connects each power amplifier in described power amplifier group 27 connects one to one, one end of each radio-frequency (RF) switch in the output of each described power amplifier and described 3rd radio-frequency (RF) switch group 28 connects one to one, the other end of each described radio-frequency (RF) switch connects the input of described signal transmitting antenna 29.
In the first radio-frequency (RF) switch group in the signal sampling module of described first passage and the signal sampling module of second channel in the quantity of radio-frequency (RF) switch, band-pass filter group in the quantity of band pass filter, the first attenuator group in the quantity of attenuator, the first digital to analog converter group in the quantity of digital to analog converter, the first vco bank in the quantity of voltage controlled oscillator and the second radio-frequency (RF) switch group the quantity of radio-frequency (RF) switch equal;
In described second digital to analog converter group in the quantity of digital to analog converter, the second vco bank in the quantity of voltage controlled oscillator, the second attenuator group in the quantity of attenuator, the quantity of power amplifier group intermediate power amplifier and the 3rd radio-frequency (RF) switch group the quantity of radio-frequency (RF) switch equal, in first radio-frequency (RF) switch group described in Fig. 1, the quantity of radio-frequency (RF) switch is three, and in described 3rd radio-frequency (RF) switch group, the quantity of radio-frequency (RF) switch is four.
Also comprise command centre, described command centre comprises command centre's controller, and the output of described command centre controller connects the input of described master controller, and the output of described master controller connects the input of described command centre controller.
Also comprise the intercom being built-in with GPS transceiver module, described command centre is built-in with GPS transceiver module, described intercom and the wireless connections of described command centre.
Adopt the function that integrated talkback machine warning message obtains in the network of detecting shielding harness, thus make the warning message of intercom in software, be presented at the interface of computer fully as prompting, demonstrate regional location location and the situation such as personnel's id information of intercom; Warning message carries out effectively judging and sends staff in time accurately arriving in-situ processing unlawful practice in real time for operator on duty.
The intercom of native system can adopt publication number to be that CN102082861A name is called " intercom with monitoring positioning function ".
Also comprise the video frequency pick-up head being arranged on mobile phone forbidden zone, the output of described video frequency pick-up head connects the input of described command centre controller.While detecting mobile phone signal, corresponding management platform ejects the video frequency pick-up head real-time pictures detecting signal neighboring area, is convenient to the violation communication equipment that administrative staff find and search offender's use.
Described command centre also comprises the wireless signal transmission module be connected with described command centre controller;
Also comprise the remote monitoring center with wireless signal transmission module, described remote monitoring center is connected by wireless network with described command centre.
Described Surveillance center also comprises the wireless signal transceiver module be connected with described master controller, and described command centre is connected by wireless network with described Surveillance center.
Described master controller is preferably Programmable Logic Controller.
The wireless signal transmission module of described Surveillance center comprises ethernet module and USB, ethernet module and USB are bi-directionally connected by a processor and master controller, thus Surveillance center can be communicated, to realize the functions such as field adjustable monitoring with the external world.
As shown in Figure 1, Intelligent whole frequency band mobile phone shielding system uses+12V to power, the voltage becoming each chip to need the+12V Power convert of input by the power circuit of inside, then supply electrical chip after strict filtering.On-the-spot 220V electric main turns+12V DC to this equipment by the suitable orchestration of wanting of external power supply.
The operation principle of the utility model Intelligent whole frequency band mobile phone shielding system is: native system comprises following two processes:
Scan fast automaticly and catch communication terminal signals process: this Intelligent whole frequency band mobile phone shielding system is carrying out the active ultralow lower powered detecting gauze screen of place forming one of communication management and control, when nobody dials mobile phone, system radio frequency is in accepting state, when the personnel in supervision region that detect transfer to or use illegal communication apparatus, the signal sampling module of the signal sampling module of first passage and second channel receive signal that mobile communication terminal sends (according to time ordered pair each frequency range mobile phone signal carry out frequency sweep), entering low noise amplifier amplifies through switching by the radio-frequency (RF) switch of the first radio-frequency (RF) switch group the band-pass filter device that segmentation enters specific frequency range, then demodulator is entered, level adjustment is realized by the attenuated inside device of demodulator.Signal after demodulation just enters analog to digital converter through low pass filter and realizes sampling, delivers in on-the-spot master controller and realizes threshold judgement.Whole reception is divided into 6 different frequency ranges, and the mode using voltage controlled oscillator (voltage controlled oscillator of the first vco bank) directly to scan, realizes rapid frequency-sweeping.Use low noise amplification to realize high sensitivity, use the inner high degree of suppression low pass filter of demodulator to realize Channel assignment, guarantee the reliability of input.Produce corresponding interference signal according to the illegal mobile phone signal detected to be launched by transmitting chain, transmission channel is divided into 4 different frequency ranges, the mode using voltage controlled oscillator (voltage controlled oscillator of the second vco bank) directly to scan amplifies output through power amplifier, realizes rapid frequency-sweeping equally.For Frequency Division Duplexing (FDD) (FDD) communication mode, use and detect upward signal, launch descending interference signal.Use synchronous detection module for time division duplex (TDD) communication mode, detect that the signal analysis that base station sends goes out synchronizing information, after stringent synchronization, the moment that the signal that sense terminals is sent sends in base station sends interference signal.
Intelligent whole frequency band mobile phone shielding system produces interference signal and emission process: when nobody dials mobile phone, the power amplifier of main controller controls power amplifier group is low level, do not work, do not produce any frequency interferences signal, without any electromagnetic pollution, when the personnel in supervision region that detect transfer to or use illegal communication apparatus, main controller controls digital to analog converter direct voltage output signal controlling voltage controlled oscillator exports the signal needing interference, level adjustment is realized through attenuator, main controller controls power amplifier input high level, the weak interference signal that second voltage controlled oscillator produces is through power amplifier group, amplify according to different communication standards and different frequencies, finally reach 2W to launch in antenna opening.Idle power amplifier is in closed condition thus reaches lowest power consumption running, and now main controller controls signal sampling module stop signal detection, shielding terminates rear detector and is again in investigation state, circulates successively.
Native system carries out frequency-division section detection, frequency-division section signal disturbing; Shield device at ordinary times and be in holding state not power consumption, it is low that signal acquisition module is operated in investigation state power pole, alleviates electromagnetic pollution, saves the energy, to reduce costs, and not easily aging, improves native system useful life.
Amass for reducing, reducing body power consumption to greatest extent and reduce costs, the signal sampling module that native system is used and signal shielding module use the built-in broadband frequency synthesizer of a master controller, the local vibration source of signal sampling module and signal shielding module shares this master controller, only use one group of radio-frequency transmissions antenna just can realize scanning full frequency band mobile phone signal, use one group of radio-frequency transmissions antenna to realize interference full frequency band mobile phone signal (switch in conjunction with radio-frequency (RF) switch and use).
Native system can layering, a point management: in each forbidden zone, as signal sampling module and the signal shielding module of native system are all installed in each floor and different building, prevent from interfering with each other between floor and building.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (10)
1. an Intelligent whole frequency band mobile phone shielding system, is characterized in that, comprises Surveillance center, and described Surveillance center comprises at least one signal sampling module, master controller and signal shielding module;
Described signal sampling module comprises sampling antenna, low noise amplifier, front radio-frequency switches set, band-pass filter group, attenuator group, demodulator, low pass filter, analog to digital converter, digital to analog converter group, vco bank and rear end radio-frequency (RF) switch group;
The annexation of described signal sampling module is: the output of described sampling antenna connects the input of described low noise amplifier, the output of described low noise amplifier connects one end of each radio-frequency (RF) switch in described front radio-frequency switches set, the input of each band pass filter in described front radio-frequency switches set in the other end of each radio-frequency (RF) switch and described band-pass filter group connects one to one, the input of each attenuator in the output of each described band pass filter and described attenuator group connects one to one, the output of each described attenuator is all connected with the input of described demodulator, the output of described demodulator connects the input of described low pass filter, the output of described low pass filter connects the input of described master controller by described analog to digital converter, each output of described master controller connects one to one respectively by the input of each digital to analog converter in described digital to analog converter group and each voltage controlled oscillator in described vco bank, one end of each radio-frequency (RF) switch in the output of each described voltage controlled oscillator and described rear end radio-frequency (RF) switch group connects one to one, in the radio-frequency (RF) switch group of described rear end, the other end of each radio-frequency (RF) switch connects the input of described demodulator,
Described signal shielding module comprises digital to analog converter group, vco bank, attenuator group, power amplifier group, radio-frequency (RF) switch group and signal transmitting antenna;
The annexation of described signal shielding module is: each output of described master controller is connected one to one by the input of each digital to analog converter in described digital to analog converter group and each voltage controlled oscillator in described vco bank, the input of each attenuator in the output of each described voltage controlled oscillator and described attenuator group connects one to one, the input of each power amplifier in the output of each described attenuator and described power amplifier group connects one to one, one end of each radio-frequency (RF) switch in the output of each described power amplifier and described radio-frequency (RF) switch group connects one to one, the other end of each described radio-frequency (RF) switch connects the input of described signal transmitting antenna.
2. Intelligent whole frequency band mobile phone shielding system according to claim 1, it is characterized in that, in the front radio-frequency switches set in described signal sampling module in the quantity of radio-frequency (RF) switch, band-pass filter group in the quantity of band pass filter, attenuator group in the quantity of attenuator, digital to analog converter group in the quantity of digital to analog converter, vco bank in the quantity of voltage controlled oscillator and rear end radio-frequency (RF) switch group the quantity of radio-frequency (RF) switch equal;
In described digital to analog converter group in described signal shielding module in the quantity of digital to analog converter, vco bank in the quantity of voltage controlled oscillator, attenuator group in the quantity of attenuator, the quantity of power amplifier group intermediate power amplifier and radio-frequency (RF) switch group the quantity of radio-frequency (RF) switch equal.
3. Intelligent whole frequency band mobile phone shielding system according to claim 2, it is characterized in that, in described signal sampling module, in front radio-frequency switches set, the quantity of radio-frequency (RF) switch is three, and in radio-frequency (RF) switch group described in described signal shielding module, the quantity of radio-frequency (RF) switch is four.
4. Intelligent whole frequency band mobile phone shielding system according to claim 3, is characterized in that, described signal sampling module is two.
5. Intelligent whole frequency band mobile phone shielding system according to claim 4, it is characterized in that, also comprise command centre, described command centre comprises command centre's controller, the output of described command centre controller connects the input of described master controller, and the output of described master controller connects the input of described command centre controller.
6. Intelligent whole frequency band mobile phone shielding system according to claim 5, is characterized in that, also comprise the intercom being built-in with GPS transceiver module, described command centre is built-in with GPS transceiver module, described intercom and the wireless connections of described command centre.
7. Intelligent whole frequency band mobile phone shielding system according to claim 5, is characterized in that, also comprise the video frequency pick-up head being arranged on mobile phone forbidden zone, and the output of described video frequency pick-up head connects the input of described command centre controller.
8. Intelligent whole frequency band mobile phone shielding system according to claim 5, is characterized in that, described command centre also comprises the wireless signal transmission module be connected with described command centre controller;
Also comprise the remote monitoring center with wireless signal transmission module, described remote monitoring center is connected by wireless network with described command centre.
9. Intelligent whole frequency band mobile phone shielding system according to claim 8, is characterized in that, described Surveillance center also comprises the wireless signal transceiver module be connected with described master controller, and described command centre is connected by wireless network with described Surveillance center.
10. the Intelligent whole frequency band mobile phone shielding system according to any one of claim 1-9, is characterized in that, described master controller is Programmable Logic Controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520270428.8U CN204597979U (en) | 2015-04-29 | 2015-04-29 | Intelligent whole frequency band mobile phone shielding system |
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| CN201520270428.8U CN204597979U (en) | 2015-04-29 | 2015-04-29 | Intelligent whole frequency band mobile phone shielding system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120859A (en) * | 2017-12-29 | 2018-06-05 | 国网江苏省电力有限公司检修分公司 | A kind of active electric magnetic screen generating means |
| CN111010252A (en) * | 2019-12-04 | 2020-04-14 | 杭州恒生数字设备科技有限公司 | Method for conducting broadband subsection guiding shielding on digital transmission equipment |
-
2015
- 2015-04-29 CN CN201520270428.8U patent/CN204597979U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120859A (en) * | 2017-12-29 | 2018-06-05 | 国网江苏省电力有限公司检修分公司 | A kind of active electric magnetic screen generating means |
| CN108120859B (en) * | 2017-12-29 | 2024-04-12 | 国网江苏省电力有限公司检修分公司 | Active electromagnetic shielding generating device |
| CN111010252A (en) * | 2019-12-04 | 2020-04-14 | 杭州恒生数字设备科技有限公司 | Method for conducting broadband subsection guiding shielding on digital transmission equipment |
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