CN202364204U - Examination room wireless signals shielding device - Google Patents
Examination room wireless signals shielding device Download PDFInfo
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- CN202364204U CN202364204U CN201120504397XU CN201120504397U CN202364204U CN 202364204 U CN202364204 U CN 202364204U CN 201120504397X U CN201120504397X U CN 201120504397XU CN 201120504397 U CN201120504397 U CN 201120504397U CN 202364204 U CN202364204 U CN 202364204U
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Abstract
The utility model discloses an examination room wireless signal shielding device which comprises a mobile phone wireless signal shielding part, a power supply and a non-mobile-phone wireless cheating signal shielding part, wherein the non-mobile-phone wireless cheating signal shielding part consists of a low-frequency oscillator, a wide-frequency voltage-controlled oscillator, a power amplifier and a transmitting antenna. The examination room wireless signal shielding device provided by the utility model shields the non-mobile-phone wireless signal through the wide frequency set up by the non-mobile-phone wireless cheating signal shielding part by utilizing a 'non-intermittence' technology, thus the examination room wireless signal shielding device provided by the utility model has the obvious advantages that not only can the mobile phone wireless signal be shielded, but also the non-mobile-phone wireless signal can be shielded.
Description
Technical field
The utility model relates to a kind of wireless signal shielding device, relates in particular to a kind of examination hall wireless signal shielding device.
Background technology
Information age, communication technology high speed development, mobile phone have become people's routine work and the indispensable important tool of life.Along with the extensive use of mobile phone, also produced some very important problems, as become the instrument of cheating at one's exam.For fear of utilizing the mobile phone cheating that takes an exam, on the market cellular phone signal shielding device has appearred now, can shield the mobile phone wireless signal, utilize the mobile phone cheating that takes an exam thereby prevent.But existing common cellular phone signal shielding device all is to shield to the mobile phone wireless signal, that is to say to shield the mobile phone wireless signal.And on the examination hall, occurred utilizing at present new wireless device one non-mobile phone wireless equipment to practise fraud; As utilize wireless devices such as wireless headset, bone conduction earphone to carry out the examination hall cheating; And common cellular phone signal shielding device can only shield the mobile phone wireless signal on the present market, can not shield non-mobile phone wireless cheating equipment (like wireless headset, the bone conduction earphone etc.) wireless signal that sends.
The utility model content
To the problem that exists in the prior art, the utility model provides a kind of can shield the examination hall wireless signal shielding device that the mobile phone wireless signal can shield non-mobile phone wireless signal again.
For achieving the above object, the concrete scheme that the utility model adopts is following:
A kind of examination hall wireless signal shielding device comprises mobile phone wireless signal shielding part and power supply; Also include non-mobile phone wireless cheating signal shielding part, said non-mobile phone wireless cheating signal shielding part is made up of low-frequency oscillator, broadband voltage controlled oscillator, power amplifier and transmitting antenna.
Further; Said non-mobile phone wireless cheating signal shielding partly includes a low-frequency oscillator, two broadband voltage controlled oscillators, two first order power amplifiers, two second level power amplifiers and two transmitting antennas and forms; One end of wherein said low-frequency oscillator links to each other with said power supply, and the other end links to each other with two broadband voltage controlled oscillator one ends respectively; One end of a broadband voltage controlled oscillator in said two broadband voltage controlled oscillators also directly links to each other with power supply; The other end of each broadband voltage controlled oscillator links to each other with an end of a first order power amplifier; The other end of each first order power amplifier links to each other with an end of a second level power amplifier, and the other end of each second level power amplifier links to each other with transmitting antenna.
Further, said broadband voltage controlled oscillator includes ne555 circuit, R25 high-frequency triode.
Further; Said mobile phone wireless signal shielding partly includes two low-frequency oscillators, three voltage controlled oscillators, three power amplifiers and three transmitting antennas and forms; One end of wherein said each low-frequency oscillator links to each other with said power supply, and the other end links to each other with three voltage controlled oscillator one ends; One end of said each voltage controlled oscillator also directly links to each other with power supply simultaneously; The other end of each voltage controlled oscillator links to each other with an end of a power amplifier, and the other end of each power amplifier links to each other with transmitting antenna.
Further, said mobile phone wireless signal shielding part and said non-mobile phone wireless cheating signal shielding partial common power supply.
A kind of examination hall wireless signal shielding device that the utility model provides; Wideband utilization " non-intermittence " technology through non-mobile phone wireless cheating signal shielding is partly built is sent and the radiofrequency signal of non-mobile phone wireless cheating equipment with frequency range; Make the receiving terminal of non-mobile phone wireless cheating equipment receive the signal of a kind of examination hall wireless signal shielding device emission that the utility model provides; And can not receive the signal that non-mobile phone wireless cheating equipment is launched, thereby reach the non-mobile phone wireless signal purpose of shielding.Simultaneously, a kind of examination hall wireless signal shielding device that the utility model provides includes mobile phone wireless signal shielding part commonly used again, can be used to shield the mobile phone wireless signal.So having, a kind of examination hall wireless signal shielding utensil that the utility model provided to shield the outstanding advantage that the mobile phone wireless signal can shield non-mobile phone wireless signal again.
Description of drawings
Fig. 1 is a kind of example structure sketch map of the described a kind of examination hall of the utility model wireless signal shielding device.
Embodiment
Below in conjunction with Figure of description and embodiment the utility model is done further to describe.
Fig. 1 is a kind of example structure sketch map of the described a kind of examination hall of the utility model wireless signal shielding device.As can be seen from Figure 1; A kind of examination hall wireless signal shielding device among this embodiment comprises mobile phone wireless signal shielding part, power supply and non-mobile phone wireless cheating signal shielding part, and said non-mobile phone wireless cheating signal shielding part is made up of low-frequency oscillator, broadband voltage controlled oscillator, power amplifier and transmitting antenna 1.Said non-mobile phone wireless cheating signal shielding partly includes a low-frequency oscillator, two broadband voltage controlled oscillators, two first order power amplifiers, two second level power amplifiers and two transmitting antennas 1 and forms; One end of wherein said low-frequency oscillator links to each other with said power supply, and the other end links to each other with two broadband voltage controlled oscillator one ends respectively; One end of a broadband voltage controlled oscillator in said two broadband voltage controlled oscillators also directly links to each other with power supply; The other end of each broadband voltage controlled oscillator links to each other with an end of a first order power amplifier; The other end of each first order power amplifier links to each other with an end of a second level power amplifier, and the other end of each second level power amplifier links to each other with transmitting antenna 1.Said broadband voltage controlled oscillator is made up of devices such as ne555 circuit, R25 high-frequency triodes.Said mobile phone wireless signal shielding partly includes two low-frequency oscillators, three voltage controlled oscillators, three power amplifiers and three transmitting antennas 1 and forms; One end of wherein said each low-frequency oscillator links to each other with said power supply, and the other end links to each other with three voltage controlled oscillator one ends; One end of said each voltage controlled oscillator also directly links to each other with power supply simultaneously; The other end of each voltage controlled oscillator links to each other with an end of a power amplifier, and the other end of each power amplifier links to each other with transmitting antenna 1.Said mobile phone wireless signal shielding part and said non-mobile phone wireless cheating signal shielding partial common power supply.
Pass through foregoing description; This embodiment of the utility model adopts " non-intermittence " technology, builds the broadband voltage controlled oscillating circuit through devices such as ne555 circuit and R25 high-frequency triodes, shakes the radio frequency signal of 150-700M; The 150-700M radio frequency signal has been contained the frequency that present 99.9% non-mobile phone wireless cheating equipment uses; The back level covers whole examination hall through twice amplification, thereby realizes the shielding of non-mobile phone wireless cheating signal.
Low-frequency oscillation in the mobile phone wireless signal shielding part is given to voltage controlled oscillator to signal; Voltage controlled oscillator is according to the variation of the signal combination voltage of low-frequency oscillation; Shake the downstream signal of various cell phone networks, machine sends and the downstream signal of cellular base station with frequency range, and the authentication between mobile phone and the base station can't be accomplished; Reach the purpose of shielding, do not influence the work of cellular base station again.But not the low-frequency oscillation in the mobile phone wireless cheating signal shielding part is given to voltage controlled oscillator to signal; Voltage controlled oscillator is according to variation " the non-intermittence " emission and the radiofrequency signal of non-mobile phone wireless cheating equipment with frequency range of the signal combination voltage of low-frequency oscillation; Make the receiving terminal of non-mobile phone wireless cheating equipment receive the signal of the examination hall wireless signal shielding device emission that the utility model provides; And do not receive the signal of their equipment emission, thereby realize the shielding of non-mobile phone wireless cheating signal.The non-mobile phone wireless cheating equipment here comprises wireless cheating equipment such as wireless headset, bone transmitting antenna.
A kind of examination hall wireless signal shielding device that the utility model provides; Wideband utilization " non-intermittence " technology through non-mobile phone wireless cheating signal shielding is partly built is sent and the radiofrequency signal of non-mobile phone wireless cheating equipment with frequency range; Make the receiving terminal of non-mobile phone wireless cheating equipment receive the signal of a kind of examination hall wireless signal shielding device emission that the utility model provides; Can not receive the signal of non-mobile phone wireless cheating equipment emission, thereby reach the non-mobile phone wireless signal purpose of shielding.Simultaneously, a kind of examination hall wireless signal shielding device that the utility model provides includes mobile phone wireless signal shielding part commonly used again, is used for shielding the mobile phone wireless signal.Thereby the utility model provided, and a kind of examination hall wireless signal shielding utensil has can shield the outstanding advantage that the mobile phone wireless signal can shield non-mobile phone wireless signal again, and practical value is high.
The method of the utility model is not limited to the embodiment in the embodiment, and those skilled in the art draw other execution mode according to the technical scheme of the utility model, belongs to the technological innovation scope of the utility model equally.
Claims (5)
1. an examination hall wireless signal shields device; Comprise mobile phone wireless signal shielding part and power supply; It is characterized in that: this examination hall wireless signal shielding device also includes non-mobile phone wireless cheating signal shielding part, and said non-mobile phone wireless cheating signal shielding part is made up of low-frequency oscillator, broadband voltage controlled oscillator, power amplifier and transmitting antenna.
2. a kind of examination hall according to claim 1 wireless signal shielding device; It is characterized in that: said non-mobile phone wireless cheating signal shielding partly includes a low-frequency oscillator, two broadband voltage controlled oscillators, two first order power amplifiers, two second level power amplifiers and two transmitting antennas and forms; One end of wherein said low-frequency oscillator links to each other with said power supply, and the other end links to each other with two broadband voltage controlled oscillator one ends respectively; One end of a broadband voltage controlled oscillator in said two broadband voltage controlled oscillators also directly links to each other with power supply; The other end of each broadband voltage controlled oscillator links to each other with an end of a first order power amplifier; The other end of each first order power amplifier links to each other with an end of a second level power amplifier, and the other end of each second level power amplifier links to each other with transmitting antenna.
3. a kind of examination hall according to claim 2 wireless signal shielding device, it is characterized in that: said broadband voltage controlled oscillator includes ne555 circuit and R25 high-frequency triode.
4. according to the described a kind of examination hall of one of claim 1 to 3 wireless signal shielding device; It is characterized in that: said mobile phone wireless signal shielding partly includes two low-frequency oscillators, three voltage controlled oscillators, three power amplifiers and three transmitting antennas and forms; One end of wherein said each low-frequency oscillator links to each other with said power supply, and the other end links to each other with three voltage controlled oscillator one ends; One end of said each voltage controlled oscillator also directly links to each other with power supply simultaneously; The other end of each voltage controlled oscillator links to each other with an end of a power amplifier, and the other end of each power amplifier links to each other with transmitting antenna.
5. according to the described a kind of examination hall of one of claim 1 to 3 wireless signal shielding device, it is characterized in that: said mobile phone wireless signal shielding part and said non-mobile phone wireless cheating signal shielding partial common power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120504397XU CN202364204U (en) | 2011-12-07 | 2011-12-07 | Examination room wireless signals shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120504397XU CN202364204U (en) | 2011-12-07 | 2011-12-07 | Examination room wireless signals shielding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202364204U true CN202364204U (en) | 2012-08-01 |
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ID=46575356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120504397XU Expired - Fee Related CN202364204U (en) | 2011-12-07 | 2011-12-07 | Examination room wireless signals shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202364204U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103957071A (en) * | 2014-05-13 | 2014-07-30 | 济南中经鹿鸣信息科技有限公司 | Desktop board type signal shielding device |
| CN105406936A (en) * | 2015-11-30 | 2016-03-16 | 惠州学院 | Mobile phone signal shielding instrument |
| CN105553490A (en) * | 2015-12-17 | 2016-05-04 | 中国电子科技集团公司第四十一研究所 | Green mobile communication interference device and method |
| CN107342838A (en) * | 2017-06-12 | 2017-11-10 | 京信通信系统（中国）有限公司 | A kind of realization method and system of private network communication |
-
2011
- 2011-12-07 CN CN201120504397XU patent/CN202364204U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103957071A (en) * | 2014-05-13 | 2014-07-30 | 济南中经鹿鸣信息科技有限公司 | Desktop board type signal shielding device |
| CN105406936A (en) * | 2015-11-30 | 2016-03-16 | 惠州学院 | Mobile phone signal shielding instrument |
| CN105553490A (en) * | 2015-12-17 | 2016-05-04 | 中国电子科技集团公司第四十一研究所 | Green mobile communication interference device and method |
| CN105553490B (en) * | 2015-12-17 | 2017-12-01 | 中国电子科技集团公司第四十一研究所 | A kind of green mobile Communication Jamming device and its interference method |
| CN107342838A (en) * | 2017-06-12 | 2017-11-10 | 京信通信系统（中国）有限公司 | A kind of realization method and system of private network communication |
| CN107342838B (en) * | 2017-06-12 | 2020-01-14 | 京信通信系统（中国）有限公司 | Method and system for realizing private network communication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20171207 |