CN2662540Y - Intelligent environment protection conference crypto - Google Patents

Abstract

The utility model relates to an intelligent environment-friendly meeting scrambler, which comprises a detector module circuit, a frequency closed-loop control circuit, a sweep sawtooth generator and a station amplifier; wherein, the data port of the detector module is connected with an IO port of the single chip microcomputer; the detector module detects a mobile phone signal, then the output signal is connected with the IO port of the single chip microcomputer, and after the single chip microcomputer detects the mobile phone signal, the sawtooth generator is controlled and sprung to work and then controlled by the frequency closed-loop circuit and sent to the IO port of the single chip microcomputer, and then controlled by the single chip microcomputer, finally outputs the scrambling signal which is then output from the antenna after power amplifying. The high-frequency signal transmitted by the device can completely block the contacts between the mobile phones in the coverage area and the outside world, make the mobile phones unable to realize the communication capability, can prevent phone leak incidents taking place in the confidentiality places just as meetings, detention centers and other sites, can avoid cheating by the mobile phones at the examination room and can maintain the calm and order in meetings and public places.

Description

Intelligent environmental protection type meeting security machine

Technical field:

The utility model is the improvement to existing communication signal countermeasure set, divulges a secret problem easily and a kind of intelligent environmental protection type meeting security machine of developing at mobile phone, belongs to radio communication information privacy safe practice field.

Technical background:

The mobile communication of phone brings us and also brings negative effect simultaneously fast and easily, promptly utilizes the mobile phone cheating, utilizes the interference that mobile phone steals information, ringing sound of cell phone is normally learnt, worked people.Therefore,, mobile phone signal is blocked, make the mobile phone silence become pressing for of country and people in suitable place.At present, China also is in the starting stage at the development work of the safe and secret product of meeting that prevents to utilize mobile phone to divulge a secret, analyze by retrieval, mainly there is following problem in this series products: product is a long time continuous working, the long-term radiation human body of microwave, health is produced certain harm, and the frequency great majority of emission all disturb the upward signal of UNICOM, mobile base station, have a strong impact on the normal operation of mobile communication; Product design is simple in structure, and selected device mostly is separation member greatly, debug difficulties, and unstable properties, transmitting power is too little; The product effective range that covers that transmits can not be adjusted; Product is subject to temperature, environmental impact, does not have automatic compensation function; Product exists the tranmitting frequency coverage narrow, can not block the mutual communication between mobile phone on the market at present fully, and his practicality is affected.

Summary of the invention:

The utility model discloses a kind of intelligent environmental protection type meeting security machine, solved utilize prior mobile phone to carry out mobile phone cheating, mobile phone steals information, and prevents ringing sound of cell phone to the interference that people normally learn, work, and makes mobile phone " silence ".

Technical solution of the present utility model comprises: the 900M power amplifier, the 1800M power amplifier, antenna, stabilized voltage power supply and detector module circuit, the frequency closed control circuit, the frequency sweep saw-toothed wave generator constitutes crypto, wherein, an IO mouth of the data terminal of detector module and single-chip microcomputer is connected, after detector module detects mobile phone signal, output signal is connected with single-chip microcomputer IO mouth, control triggered saw-toothed wave generator work after single-chip microcomputer detected mobile phone signal, saw-toothed wave generator is controlled through the overfrequency closed loop, be sent to the IO mouth of single-chip microcomputer, by Single-chip Controlling, the output scrambling signal is exported from antenna after power amplification; The data output end of closed loop frequency controller links to each other with single-chip microcomputer IO mouth; Two IO of single-chip microcomputer and the input of frequency sweep saw-toothed wave generator link to each other; The input of the output of frequency sweep saw-toothed wave generator and closed loop frequency controller, the input of power amplifier link to each other.

The circuit of apparatus of the present invention is in the standby monitoring state at ordinary times, when detector module is tested the mobile phone communication, trigger single-chip microcomputer, after single-chip microcomputer is proofreaied and correct four tunnel working frequency points by the frequency closed loop circuit, launch one group with the mobile phone received signal with frequently interference signal, the received signal of all mobile phones in the area of coverage is flooded, blocked a mobile phone and an extraneous cutting link, make mobile phone can't realize communication function.After one minute, the utility model reenters standby monitoring state, periodic duty.This working method is reduced to minimum to the radiation of human body microwave.Prevent to utilize in the meeting-place mobile phone signal to steal information, effectively ensured the meeting-place order.

Good effect of the present invention is: by the intelligent chip management circuit, and modularized design, less microwave radiation has reduced product cost, reduced volume.The high-frequency signal of this device emission can thoroughly be blocked mobile phone and extraneous getting in touch in the area of coverage, make mobile phone can't realize communication function, the generation that can prevent on the meeting-place, secret place such as detention house utilizes the mobile phone leakage of a state or party secret, can avoid practising fraud with mobile phone on the examination hall, and keep the quiet order of meeting-place and public place.Be very suitable for meeting room, turnkey institute, classroom, reading room, library, etc. the place of need to be keep secret and solemnly silent interruption-free use.

Description of drawings:

Fig. 1 is a circuit block diagram of the present invention.

Fig. 2 is a detector module circuit of the present invention.

Fig. 3 is a frequency closed control circuit of the present invention.

Fig. 4 is a frequency sweep saw-toothed wave generator of the present invention.

Embodiment:

According to shown in Figure 1, detector module circuit, frequency closed control circuit, single-chip microcomputer main control software program, frequency sweep saw-toothed wave generator, 900M power amplifier, 1800M power amplifier, antenna, stabilized voltage power supply, wherein,

Detector module circuit is made up of diode, resistor-capacitor unit, UF1 chip, UF2 chip, and high-frequency signal is introduced from antenna opening JF1, through electric capacity, diode, send into chip UF1, delivers to the UF2 chip after treatment, and the output of U2 links to each other with single-chip microcomputer IO mouth.

The frequency closed control circuit is made up of single-chip microcomputer U9, frequency divider U5, U6, U8, high-frequency generator U1, U3 and peripheral resistor-capacitor unit, and the 12 pin output low frequency section high-frequency signals of U1 link to each other through 1 pin of CA1, RA4 and U5; 8 pin of U5 meet capacitor C A4; 4 pin of U5 link to each other with single-chip microcomputer 9 pin; The high band high-frequency signal of 12 pin of U3 output links to each other through 1 pin of CB1, RB4 and U6; 8 pin of U6 meet capacitor C B4; 4 pin single-chip microcomputers, 8 pin of U6 link to each other.R1, C4, CX1, CX2 form single-chip microcomputer and reset and oscillating circuit.

The frequency sweep saw-toothed wave generator is made up of single-chip microcomputer U9, pulse generator U11, OC door chip U8 and integrator U7, the output of U11 divides four the tunnel to deliver to integrator U7 behind U8, Q0, Q1, Q2, Q3 signal also are added to integrator U7, through integral transformation, form four tunnel outputs.

The concrete course of work of the present invention is as follows:

After mains switch S1 closure, VCC gives main board power supply, the self-correcting of Single-chip Controlling frequency closed loop.Single-chip microcomputer at first will carry out frequency correction to control voltage.When high-frequency signal triggers detector module, at output pulse signal is arranged, single-chip microcomputer confirms to this signal testing whether it is mobile phone signal.Be mobile phone signal, trigger further work; If false signal is then abandoned, wait next signal to be detected.After single-chip microcomputer detects mobile phone signal, trigger saw-toothed wave generator work, four road sawtooth waveforms process analog switch is delivered to the control end of VCO, makes four road scrambling signals of VCO output 865-885MHZ, 930-965MHZ, 1800-1890MHZ, 1900-1925MHZ.Single-chip microcomputer is opened power amplifier, and four road scrambling signals are delivered to 800MHZ power amplifier and 1800MHZ power amplifier through capacitive coupling, disturbs the ripple signal from the high frequency of antenna output 33DB.After 1 minute, single-chip microcomputer cuts out sawtooth-wave circuit and power amplifier, reenters frequency closed loop self-correcting state, the circulation above-mentioned steps.

Claims (1)

1, a kind of intelligent environmental protection type meeting security machine, mainly comprise 900M power amplifier, 1800M power amplifier, antenna, stabilized voltage power supply, it is characterized in that: also have detector module circuit, frequency closed control circuit, frequency sweep saw-toothed wave generator to constitute, wherein

Detector module circuit is made up of diode DF2, resistor-capacitor unit, UF1 chip, UF2 chip, high-frequency signal is introduced from antenna opening JF1, through capacitor C F1, diode DF2, send into chip UF1, deliver to the UF2 chip after treatment, the output of UF2 links to each other with single-chip microcomputer IO mouth;

The frequency closed control circuit is made up of single-chip microcomputer U9, frequency divider U5, U6, U8, high-frequency generator U1, U3 and peripheral resistor-capacitor unit, and the 12 pin output low frequency section high-frequency signals of U1 link to each other through 1 pin of capacitor C A1, resistance R A4 and U5; 8 pin of U5 meet capacitor C A4; 4 pin of U5 link to each other with single-chip microcomputer 9 pin; The high band high-frequency signal of 12 pin of U3 output links to each other through 1 pin of CB1, RB4 and U6; 8 pin of U6 meet capacitor C B4; 4 pin single-chip microcomputers, 8 pin of U6 link to each other.R1, C4, CX1, CX2 form single-chip microcomputer and reset and oscillating circuit;

The frequency sweep saw-toothed wave generator is made up of single-chip microcomputer U9, pulse generator U11, OC door chip U8 and integrator U7, the output of U11 divides four the tunnel to deliver to integrator U7 behind U8, Q0, Q1, Q2, Q3 signal also are added to integrator U7, through integral transformation, form four tunnel outputs.

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