CN203492031U

CN203492031U - Signal shielding device

Info

Publication number: CN203492031U
Application number: CN201320044494.4U
Authority: CN
Inventors: 惠登峰
Original assignee: BEIJING HONGWEI XIANCHUANG TECHNOLOGY Co Ltd
Current assignee: BEIJING HONGWEI XIANCHUANG TECHNOLOGY Co Ltd
Priority date: 2013-01-28
Filing date: 2013-01-28
Publication date: 2014-03-19
Anticipated expiration: 2023-01-28

Abstract

The utility model provides a multichannel multifunctional wireless communication signal shielding device, comprising a casing, and a modularized signal shielding circuit, a power supply circuit, a dynamic state slow execution circuit, a high temperature protection and control circuit, and antennas assembled in the casing. The device also comprises a national standard time automatic timing display clock module, and a display nixie tube. The signal shielding circuit comprises a plurality of independent channel shielding units, and each independent channel shielding unit is connected with an antenna, so as to shield a corresponding frequency band independently. The device can totally shield various mobile phone signals such as China Telecom CDMA800, CDMA2000, and PHS, China Mobile TD-SCDMA, GSM900, EGSM900, GSM-R, GSM1800M, and China Unicom GSM900, GSM1800M, and WCDMA, and various high and low frequency U and V band radio communication signals, data transmission tools, pinhole cameras, and other wireless equipment. The device can also select and shield a part of the frequency bands. In order to provide convenience for field use in examination rooms and meeting places, the selected national standard time automatic timing display clock module can receive national standard time, so use is convenient.

Description

Signal shielding device

Technical field

The utility model relates to a kind of wireless signal jamming equipment, is specifically related to a kind of signal shielding device.

Background technology

There are on the market now various radio signal shielding devices on sale.Modal shielding device is to use metal shell, especially aluminum alloy casing, external antenna and Power Management Design.This be due to old-fashioned shielding device sales volume seldom, it is very expensive that the mould of shell is made in customization die sinking, so just use aluminium alloy extrusions public on market, after cutting off according to size, add a cover with corrosion resistant plate on both sides, boring, assembling, expense is not high.This way is with low cost, saves mould and takes, and now a lot of individual workships still adopt this kind of pattern.For enterprise, the design of external antenna and external power supply, more convenient its produced the outsourcing of part parts.And this all inconvenience that causes user to use, as screw antenna, power supply inserting etc., especially screwing of antenna needs antenna respective frequencies, substantially all can cause interface to damage after repeatedly screwing, and then whole equipment scrapping.In addition, metal causes higher energy consumption and resource loss in process of production as shell material, science not the angle of low-carbon environment-friendly.

Utility model content

In order to solve existing radio signal shielding device, use the problems such as inconvenience, energy consumption is high, the utility model proposes a kind of based on radio signal shielding device modularized design, antenna and on-chip power.Be specially:

A signal shielding device, comprising: casing, signal shielding circuit, power circuit and antenna, described signal shielding operating circuit, power circuit and antenna mount are inner at casing.

Described signal shielding circuit comprises a plurality of independent channel screen units, and each independent channel screen unit is connected with an antenna, independently corresponding frequency range is shielded.

Automatic correcting time module and clock display module while preferably, also comprising national standard.

Described independent signal screen unit can be adjusted transmitting power and then be adjusted shield ranges by potentiometer.

It is characterized in that, described independent signal screen unit can be divided into two groups, first group of signal shielding unit is used for shielding each frequency range mobile phone signal, second group of signal shielding unit is used for shielding other wireless signals such as intercom, wireless headset, also comprises that supply module carries out two-way to two groups of independent channel screen units independently-powered.

Described screen unit can pass through the above harmonic wave of secondary, and target frequency is formed to shielding.

Preferably, also comprise dynamically slow executive circuit.

Preferably, also comprise high temperature protection control circuit.

Preferably, the fin of protection electronic device is installed, in casing, also comprises radiator fan, on casing, have louvre.

Preferably, the transformer of described power circuit is the transformer of vacuum paint dipping design.

According to the utility model radio signal shielding device, shell can adopt the plastic material of recyclable recycling, and its integrated design does not need any other additional accessory, inserts power supply and can use.The design of modular independent signal screen unit makes Realization of Product more flexible, can be according to user's request and function needs, and the consideration of cost aspect, product is carried out to the collocation of different situations, carry out easily the increase and decrease of corresponding module.The power management of global optimization, optimizing thermal solution and controlled design of electronic circuits, take into full account high-frequency signal each side factor on emission effciency impact in transmission and emission process, can be by the baroque shielding device of script, briefly be one and plug in and open the applied product of fool that switch just can be realized shield effectiveness, convenient user, even can use without training to greatest extent.

According to the signal Ke Dui CDMA800 of China Telecom of the present utility model, CDMA2000, PHS, the wireless devices such as the various mobile phone signals such as the TD-SCDMA of China Mobile, GSM900, EGSM900, GSM-R, GSMl800M, the GSM900 of CHINAUNICOM, GSMl800M, WCDMA and various low-and high-frequency U, V section radio communication signal, number biography instrument, pinhole cameras shield comprehensively

In addition,, in order to use at the scene in meeting-place, convenient examination hall, during the national standard of apolegamy, automatic correcting time module can receive country's standard time, during automatically unified school, and the clock display function of whole nation unified standard is provided, or the timing Presentation Function such as countdown, reverse countdown, facilitated to greatest extent use.

accompanying drawing explanation

Fig. 1 is the external structure schematic diagram of the utility model the first embodiment

Fig. 2 is the circuit theory diagrams of the utility model the first embodiment radio signal shielding device

Fig. 3 is the circuit theory diagrams of the utility model the second embodiment radio signal shielding device

Embodiment

Below, with reference to the accompanying drawings of the embodiment of radio signal shielding device of the present utility model.

Fig. 1 is according to the external structure schematic diagram of the radio signal shielding device of the utility model the first embodiment.Radio signal shielding device comprises casing 1 and is assemblied in power circuit, signal shielding circuit and the antenna (not illustrating in the drawings) of casing inside.On casing, be provided with signal shielding operating state viewing area 2 and time showing region 3.

Fig. 2 is the circuit theory diagrams that the utility model the first embodiment shields device.Comprise supply module and independent signal screen unit.Its design concept is according to the communication frequency of different communication equipment and communication mode, take modular IBPC (Independent Branch Processing Channels) individual branches processing channel technology, different communication channels and signal are shielded.Signal shielding circuit of the present utility model is comprised of a plurality of independent signal screen units, only shows two in figure.Each independent signal screen unit is connected with an antenna, independently corresponding frequency range is shielded.General mid and low-end products are designs of taking 3-IBPC, and with 3 channels, to 800-900 section, the mobile phone signal of 1800-1900 section and 2100 sections shields.And in this practical embodiment, can according to circumstances to the shielding of mobile phone signal, be adjusted to the design of 4-IBPC to 6-IBPC, simultaneously as added WIFI wireless network, VHF, during the shielding of the wireless signals such as UHF, only need to increase the functional requirement that corresponding IBPC individual branches processing channel can meet product.In addition, can also match there is secondary, the chip of triple-frequency harmonics function, by the second harmonic to VHF frequency range, generate the signal shielding of 300-320MHz, form the shielding that logarithm passes cheating tool.Harmonic wave control also can be carried out in position in about 1G-1.3GHz, to shield the pinhole cameras etc. of corresponding frequencies.Automatic correcting time module and clock display module when shielding device also comprises national standard.When during national standard, automatic correcting time module can be unified school automatically, display module provides the clock display function of whole nation unified standard all the time, or the timing Presentation Function such as countdown, reverse countdown.

Fig. 3 is the circuit theory diagrams of the utility model the second embodiment.As shown in Figure 3, independent signal screen unit can be divided into two groups, and first group of signal shielding unit is used for shielding each frequency range mobile phone signal, and second group of signal shielding unit is used for shielding other wireless signals such as intercom, wireless headset.It is independently-powered that supply module carries out two-way to two groups of independent channel screen units.User can make respectively two groups of independent signal screen units work by two mains switches.Two-way is independently-powered is a kind of execution mode of the present utility model, does not form the restriction to the utility model scope.Fewer when the design shielding frequency range of radio signal shielding device, for example, while only having 3-IBPC or 4-IBPC, can not adopt the design of supplying power with double circuit.

Independent signal screen unit can design according to various signal shielding principles, as long as can realize the signal shielding function to corresponding band.By selecting, there is secondary, the chip of triple-frequency harmonics function can also shield multiband more.

According to above first, second embodiment and other various execution modes that do not depart from the utility model design philosophy, signal shielding circuit and power circuit can be laid on pcb board.Signal shielding unit can be adjusted transmitting power and then be adjusted shield ranges by potentiometer.

On pcb board, can also be designed with dynamically slow executive circuit of DDT (Dynamic Deferred Transaction); in the time of effectively avoiding starting shooting, there is spark phenomenon in it; and in conjunction with corresponding circuit protection module; realize shielding device self-protection function from the inside to the outside, avoid various harm possible under bad condition environment.

In addition, when radio signal shielding device works long hours, can produce a large amount of heat, over-heat inside not only affects the working life of shielding device, also can affect its screening effectiveness.When the design of shielding device, must consider to prevent overheated and heat dissipation problem.First, on pcb board, high temperature protection control circuit can be set, such as ACOPS (Automatic Chips Overheat Prevention System) chip overheating prevention system etc.Secondly, can on pcb board, assemble fin, such as wind slot type aluminum WFFT (Wind Flume Fin Technolgy) fin heat radiation etc.Again, for relatively large shielding device, the radiating mode of ACT (Active Cooling Technology) and PCT (Passive Cooling Technolgy) associating be can adopt, and circulation of air duct and double fan (complete machine fan and power supply fan) design adopted.

Traditional shielding device power supply often adopts external design, to avoid the impact of high-frequency signal on power work.Although have the shielding device that adopts built-in power design now, be all difficult to reach the power needs of shielding device multichannel work.And the utility model has adopted the built-in power design of EPM (Enhanced Power Management) enhancement mode energy conservation, that is, and the transformer of the transformer adopting vacuum paint dipping of power circuit design.This has guaranteed stability, the accuracy of high-frequency signal on the one hand, simultaneously reliably power supply bond dependable performance and the long term life of shielding device, even if adopt built-in power design, can not impacted by high-frequency signal yet.

In order to make radio signal shielding device carry out accurate shielding to target area, avoid base station to produce and disturb simultaneously, during design radio signal shielding device, can also adopt AHC (Advanced Harmonic Control) senior harmonic wave control technology and CG (Aggressive Clock Gating) active time-frequency lock control techniques etc.

Claims

1. a signal shielding device, comprising: casing, signal shielding circuit, power circuit and antenna, it is characterized in that, and described signal shielding operating circuit, power circuit and antenna mount are inner at casing.

2. signal shielding device as claimed in claim 1, is characterized in that, described signal shielding circuit comprises a plurality of independent channel screen units, and each independent channel screen unit is connected with an antenna, independently corresponding frequency range is shielded.

3. signal shielding device as claimed in claim 1, is characterized in that, automatic correcting time module and clock display module while also comprising national standard.

4. signal shielding device as claimed in claim 2, is characterized in that, described independent signal screen unit can be adjusted transmitting power and then be adjusted shield ranges by potentiometer.

5. signal shielding device as claimed in claim 2, it is characterized in that, described independent signal screen unit can be divided into two groups, first group of signal shielding unit is used for shielding each frequency range mobile phone signal, second group of signal shielding unit is used for shielding other wireless signals such as intercom, wireless headset, also comprises that supply module carries out two-way to two groups of independent channel screen units independently-powered.

6. signal shielding device as claimed in claim 2, is characterized in that, described screen unit can pass through the above harmonic wave of secondary, and target frequency is formed to shielding.

7. the signal shielding device as described in claim as arbitrary in claim 1 to 6, is characterized in that, also comprises dynamically slow executive circuit.

8. the signal shielding device as described in claim as arbitrary in claim 1 to 6, is characterized in that, also comprises high temperature protection control circuit.

9. the signal shielding device as described in claim as arbitrary in claim 1 to 6, is characterized in that, the fin of protection electronic device is installed, and also comprises radiator fan in casing, has louvre on casing.

10. the signal shielding device as described in claim as arbitrary in claim 1 to 6, is characterized in that, the transformer of described power circuit is the transformer of vacuum paint dipping design.