CN117411587A - Intelligent enhanced full-frequency-band examination room wireless signal shielding device - Google Patents
Intelligent enhanced full-frequency-band examination room wireless signal shielding device Download PDFInfo
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- CN117411587A CN117411587A CN202311415299.2A CN202311415299A CN117411587A CN 117411587 A CN117411587 A CN 117411587A CN 202311415299 A CN202311415299 A CN 202311415299A CN 117411587 A CN117411587 A CN 117411587A
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- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000005855 radiation Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010408 sweeping Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/60—Jamming involving special techniques
- H04K3/68—Jamming involving special techniques using passive jamming, e.g. by shielding or reflection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses an intelligent enhanced full-frequency-band examination room wireless signal shielding device, which relates to the technical field of electronic technology application and comprises the following components: an external control module and a shielding jammer module; the external control module establishes connection with an external control system in a network port connection mode, and remotely monitors and controls the shielding interference device in an internet mode; the shielding jammer module includes: digital frequency jamming signal unit and analog jamming signal unit. The invention can perform seamless interference coverage on the whole communication frequency band through reasonable dry shielding interference device arrangement, block the cheating receiving information on the time domain and the frequency domain, and enable the equipment to be in a standby state under the condition of no cheating signal by matching with the detection equipment, so that the service life and the reliability of the equipment are higher.
Description
Technical Field
The invention relates to the technical field of electronic technology application, in particular to an intelligent enhanced full-frequency-band examination room wireless signal shielding device.
Background
The novel examination cheating mode is frequent, the examination cheating means and the cheating tools form specialized and high-tech development trend, the high-tech cheating means taking radio cheating as a main mode forms serious obstruction to normal examination order, the standardized examination room has very high requirements on environmental purification according to the requirements of standardized examination point construction of education examination, and the phenomenon that reference personnel must not use illegal means and modern technology to perform on-site cheating is avoided except necessary monitoring measures.
In the prior art, conventional signals can be effectively shielded by setting normal frequency point suppression interference in an examination room, such as: interphone U section, interphone V section, WIFI, bluetooth, wireless invisible earphone, bone conduction earphone, wireless digital transmission receiving tool and the like, but the novel cheating means for transmitting the compressed information packet by utilizing frequency conversion and frequency hopping have no effect.
Therefore, it is necessary to provide an intelligent enhanced full-band wireless signal shielding device for examination rooms, which effectively covers all frequency bands of the existing wireless cheating signals and prevents the possibility of cheating by using the wireless signals within a certain technological range.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The invention is provided in view of the problems of the existing intelligent enhanced full-band examination room wireless signal shielding device.
In order to solve the technical problems, the invention provides the following technical scheme:
an intelligent enhanced full-band examination room wireless signal shielding device, comprising: an external control module and a shielding jammer module;
the external control module establishes connection with an external control system in a network port connection mode, and remotely monitors and controls the shielding interference device in an internet mode;
the shielding jammer module includes: a digital frequency interference signal unit and an analog interference signal unit;
the digital frequency interference signal unit radiates the digital signal generated by conversion from the antenna after amplifying the rated radiation power, and the analog interference signal unit aims at the interference signal of the specific frequency signal generator, such as: and carrying out seamless interference shielding on signals in the frequency range of 40MHz-4000MHz in an examination room in the communication frequency bands of 2G, 3G, 4G and 5G mobile phones.
As a preferable scheme of the intelligent enhanced full-band examination room wireless signal shielding device, the invention comprises the following steps: the digital frequency interference signal unit includes: the digital frequency synthesizer DDS is controlled by the FFGA under the MCU to generate direct digital signals, the digital signals are swept at a high speed within a certain frequency range in a specified step length, converted into analog signals through the DAC, amplified to rated radiation power by the power amplifier, and radiated from the antenna.
As a preferable scheme of the intelligent enhanced full-band examination room wireless signal shielding device, the invention comprises the following steps: the digital frequency interference signal unit adopts 4 sections of DDS frequency division rate to work simultaneously.
As a preferable scheme of the intelligent enhanced full-band examination room wireless signal shielding device, the invention comprises the following steps: the analog interference signal unit includes: the frequency-sweeping voltage generator controls the voltage-controlled oscillator VCO to conduct continuous frequency signals from low to high in the frequency band after receiving the instruction given by the external control module, the continuous frequency signals are amplified to specified radiation power by the power amplifier, and the antenna radiates to space.
The arrangement method of the wireless signal shielding device applied to the intelligent enhanced full-frequency-band examination room is characterized in that the shielding device is arranged in an examination room center by taking classrooms as units, wherein upstairs and downstairs are arranged in a worse way, and the full coverage of interference signals is ensured.
The invention has the beneficial effects that: according to the invention, seamless interference coverage is carried out on the whole communication frequency band, cheating receiving information is blocked in a time domain and a frequency domain, and the equipment can be in a standby state under the condition of no cheating signal by matching with the detection equipment, so that the service life and reliability of the equipment are higher; the network is flexible, and the network interface circuit of the device provides conditions for timely forming local area network in a certain area. The blocking signal can be opened in a fragmented way under the command of the control center, a powerful cheating prevention and control network is formed, the whole process is unattended, remote control is realized, and humanized management is more convenient to use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram showing connection between an external control module and a shielding interference module in an intelligent enhanced full-band examination room wireless signal shielding device according to the present invention;
FIG. 2 is a block diagram of a digital frequency interference signal unit in an intelligent enhanced full-band examination room wireless signal shield according to the present invention;
FIG. 3 is a diagram of the composition of a digital frequency interference signal;
FIG. 4 is a block diagram of an analog interference signal unit in an intelligent enhanced full-band examination room wireless signal shield according to the present invention;
FIG. 5 is a layout diagram of an intelligent enhanced full-band examination room wireless signal shielding device according to the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Referring to fig. 1-4, for one embodiment of the present invention, an intelligent enhanced full-band examination room wireless signal shielding device is provided, comprising: an external control module and a shielding jammer module;
the external control module establishes connection with the external control system in a network port connection mode, and remotely monitors and controls the shielding interference devices in an internet mode, as shown in fig. 1, and the monitoring terminal monitors and controls each shielding device through the internet and a local area network router. The control software can perform centralized debugging, checking and management on all local terminal equipment and support remote authorization control. The intelligent and automatic examination mode management is supported, the automatic working modes before examination, during examination and after examination are provided, and the unattended management can be realized according to an examination plan; the method supports summarizing statistics and step-by-step reporting of cheating information, and simultaneously supports generation and printing of reports; the management of the black-and-white list of the present level is supported, and the statistical management of the cheating signal data is supported; the multi-stage cascade architecture is supported, and related information of a lower-stage system can be checked. And developing a data interface according to the requirements, and automatically downloading an examination plan. According to the local domain situation, the setting, the management and the maintenance of the black-and-white list are supported.
The shielding jammer module includes: a digital frequency interference signal unit and an analog interference signal unit; the digital frequency interference signal unit radiates the digital signal generated by conversion from the antenna after amplifying the rated radiation power, specifically: the digital frequency interference signal unit includes: the digital frequency synthesizer DDS is controlled by the FFGA under the MCU to generate direct digital signals, the digital signals are swept at a high speed within a certain frequency range in a specified step length, converted into analog signals through the DAC, amplified to rated radiation power by the power amplifier, and radiated from the antenna.
In addition, in the ultra-wideband range of full frequency band 40MHz-4000MHz, a certain time is needed for DDS frequency sweep, and a DDS is difficult to effectively cover in the time domain, the digital frequency interference signal units work simultaneously by adopting 4 sections of DDS frequency division rates, and the frequency range can be better covered seamlessly with reference to FIG. 3, as shown in FIG. 4. In practical application, the DDS can be used together with a wireless signal detection device, and under the guidance of the detection device, the DDS can point to the frequency of the cheating signal at high speed and output an interference signal to block the cheating receiving device.
The analog interference signal unit is used for the interference signals of the specific frequency signal generator, such as: the communication frequency bands of the 2G, 3G, 4G and 5G mobile phones carry out seamless interference shielding on signals in the frequency range of 40MHz-4000MHz in an examination room, and the shielded signals comprise: comprising the following steps: GSM, CDMA, DCS, TD-SCDMA, WCDMA, TD-LTE, FDD-LTE, 5G and other mobile phone communication systems; wireless communication of WIFI frequency band and Bluetooth; interphones, radio stations, hidden terminals, etc. are analog and digital communications etc. of the transmitting and receiving means.
The wireless signal shielding device of examination room adopts indoor cellular point arrangement mode to carry out networking shielding, and as the mobile phone communication operators respectively occupy different frequency ranges, the invention respectively covers interference by adopting multipath interference signals, as shown in fig. 4, the analog interference signal unit comprises: the frequency-sweeping voltage generator controls the voltage-controlled oscillator VCO to act as a continuous frequency signal from low to high in the frequency band, the continuous frequency signal is amplified to a specified radiation power by the power amplifier, and the antenna radiates to space.
Referring to fig. 5, in order to ensure the overall coverage of the interference signal, the arrangement method of the intelligent enhanced full-band wireless signal shielding device applied to the examination room is to arrange the shielding device in the examination room center in a classroom unit, wherein upstairs and downstairs are in poor arrangement.
In conclusion, the invention performs seamless interference coverage on the whole communication frequency band, blocks the cheating receiving information on the time domain and the frequency domain, and can lead the equipment to be in a standby state under the condition of no cheating signal by matching with the detection equipment, so that the service life and the reliability of the equipment are higher;
the network is flexible, and the network interface circuit of the device provides conditions for timely forming local area network in a certain area. The blocking signal can be opened in a fragmented way under the command of the control center, a powerful cheating prevention and control network is formed, the whole process is unattended, remote control is realized, and humanized management is more convenient to use.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (5)
1. An intelligent enhanced full-band examination room wireless signal shielding device, which is characterized by comprising: an external control module and a shielding jammer module;
the external control module establishes connection with an external control system in a network port connection mode, and remotely monitors and controls the shielding interference device in an internet mode;
the shielding jammer module includes: a digital frequency interference signal unit and an analog interference signal unit;
the digital frequency interference signal unit radiates the digital signal generated by conversion from the antenna after amplifying the rated radiation power, and the analog interference signal unit aims at the interference signal of the specific frequency signal generator, such as: and carrying out seamless interference shielding on signals in the frequency range of 40MHz-4000MHz in an examination room in the communication frequency bands of 2G, 3G, 4G and 5G mobile phones.
2. An intelligent enhanced full-band examination room wireless signal shielding device as defined in claim 1, wherein: the digital frequency interference signal unit includes: the digital frequency synthesizer DDS is controlled by the FFGA under the MCU to generate direct digital signals, the digital signals are swept at a high speed within a certain frequency range in a specified step length, converted into analog signals through the DAC, amplified to rated radiation power by the power amplifier, and radiated from the antenna.
3. An intelligent enhanced full-band examination room wireless signal shielding device as defined in claim 2, wherein: the digital frequency interference signal unit adopts 4 sections of DDS frequency division rate to work simultaneously.
4. An intelligent enhanced full-band examination room wireless signal shielding device as defined in claim 1, wherein: the analog interference signal unit includes: the frequency-sweeping voltage generator controls the voltage-controlled oscillator VCO to conduct continuous frequency signals from low to high in the frequency band after receiving the instruction given by the external control module, the continuous frequency signals are amplified to specified radiation power by the power amplifier, and the antenna radiates to space.
5. An arrangement method of an intelligent enhanced full-band examination room wireless signal shielding device according to any one of claims 1 to 4, wherein: the shielding device is arranged in an examination room center by taking classrooms as units, wherein upstairs and downstairs are arranged in a worse way, and the whole coverage of interference signals is ensured.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311415299.2A CN117411587A (en) | 2023-10-30 | 2023-10-30 | Intelligent enhanced full-frequency-band examination room wireless signal shielding device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311415299.2A CN117411587A (en) | 2023-10-30 | 2023-10-30 | Intelligent enhanced full-frequency-band examination room wireless signal shielding device |
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