CN102307052A - Intelligent fixed-frequency interferometer - Google Patents
Intelligent fixed-frequency interferometer Download PDFInfo
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- CN102307052A CN102307052A CN201110285909A CN201110285909A CN102307052A CN 102307052 A CN102307052 A CN 102307052A CN 201110285909 A CN201110285909 A CN 201110285909A CN 201110285909 A CN201110285909 A CN 201110285909A CN 102307052 A CN102307052 A CN 102307052A
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Abstract
The invention discloses an intelligent fixed-frequency interferometer which comprises a receiving antenna, a preamplifier, a high-frequency tuner, a frequency synthesizer, a low frequency power amplification launcher, an intermediate frequency power amplification launcher, a high frequency power amplification launcher, a singlechip and a transmitting antenna. According to the invention, the interferometer can be firstly turned into a first working mode, the singlechip is used for closing all the power amplification launchers, open the preamplifier to amplify radio signals received by the receiving antenna and control the high-frequency tuner to receive signals output by the preamplifier frequency point by frequency point as well as output the signals to the singlechip for sampling and storage; then, the interferometer can be turned into a second working mode, the frequency points of all signals are recorded according to the first working mode and then compared with the signals stored in the first working mode so as to find newly-generated radio signals, the corresponding frequency synthesizer is opened to generate interference signals, and finally a power amplifier can launch the interference signals to cover the newly-generated radio signals, thus the interference effect can be realized. The interferometer provided by the invention has the characteristics of strong position relevant to intelligence and energy conservation.
Description
Technical field
The present invention relates to the device that communication signal shields and disturbs, particularly a kind of intelligence is the frequency interferometer surely.
Background technology
At present,, generally take in whole predetermined band scope, in this frequency range, scan fast with a powerful frequency to the interference of the illegal wireless signal of telecommunication that occurs with frequency in the unknown time.When the illegal signals frequency of disturbing frequency and appearance is identical, then to this illegal signals generation swamping effect.But this need disturb the frequency point scanning frequency enough fast, to such an extent as to illegal signals can't transmit by complete quilt, could produce good interference effect.
Development along with mechanics of communication; The antijamming capability of communication signal is constantly strengthened; When communication data is arrived one by one little packet by high compression; Repeatedly and during transmission at a high speed; Lean on current this scanning effects of jamming just very unreliable; Because packet can be in the scanning gap moment accomplish and transmit, thereby cause the failure disturbed.This also is the main cause that existing interferometer does not disturb communication apparatus of new generation (for example 3G mobile).
In view of this, the present invention provides a kind of intelligence frequency interferometer surely.
Summary of the invention
In view of the weak point of above-mentioned prior art, the object of the present invention is to provide good, the with strong points intelligence of a kind of interference effect frequency interferometer surely.
In order to achieve the above object, the present invention has taked following technical scheme:
A kind of intelligence is the frequency interferometer surely, wherein, comprising:
The reception antenna that is used to receive radio signals;
Be used for preamplifier that the radio signal that reception antenna receives is amplified;
Be used for signal, and the signal strength signal intensity that receives is sent to the frequency synthesis type TV tuner of single-chip microcomputer by the output of frequency receiving preamplifier;
A plurality of integrated digital frequency synthesizers that are used for producing corresponding oscillation frequency signal and output according to the control signal of single-chip microcomputer;
At least one low frequency power amplifying emission device that is used to amplify and launch the low-frequency oscillation frequency signal;
At least onely be used to amplify and the intermediate frequency power amplification reflector of emission medium-frequency oscillation frequency signal;
At least one high frequency power amplifying emission device that is used to amplify and launch higher-order of oscillation frequency signal;
A plurality of transmitting antennas that are used for launching respectively the oscillation frequency signal of low frequency power amplifying emission device, intermediate frequency power amplification reflector and the output of high frequency power amplifying emission device; And
Be used to control the work of preamplifier, frequency synthesis type TV tuner, integrated digital frequency synthesizer, low frequency power amplifying emission device, intermediate frequency power amplification reflector and high frequency power amplifying emission device, and the fixed interferometer frequently of control intelligence gets into the single-chip microcomputer of first mode of operation and second mode of operation respectively; Wherein, said first mode of operation is sampled to radio signal on every side in whole effective frequency range for the fixed interferometer frequently of intelligence and is stored; Second mode of operation detects radio signal on every side in whole effective frequency range for the fixed interferometer frequently of intelligence; And compare with the sampled result of first mode of operation storage and to find out emerging radio signal, and produce interference signal at the frequency of this emerging radio signal and cover said emerging radio signal;
Said reception antenna is connected with preamplifier; Said preamplifier is connected with frequency synthesis type TV tuner with single-chip microcomputer respectively; Said single-chip microcomputer is connected with low frequency power amplifying emission device, intermediate frequency power amplification reflector and high frequency power amplifying emission device respectively; Said low frequency power amplifying emission device, intermediate frequency power amplification reflector and high frequency power amplifying emission device respectively are connected with single-chip microcomputer through an integrated digital frequency synthesizer, and said low frequency power amplifying emission device, intermediate frequency power amplification reflector and high frequency power amplifying emission device also are connected with a transmitting antenna respectively.
Described intelligence is interferometer frequently surely, wherein, also comprises the button that empties that is used for emptying data that single-chip microcomputer stores, and the said button that empties is connected with single-chip microcomputer.
Described intelligence is the frequency interferometer surely, wherein, comprises also being used to control the fixed control switch of the mode of operation of interferometer frequently of intelligence that said control switch is connected with single-chip microcomputer.
Described intelligence is the frequency interferometer surely; Wherein, Preamplifier comprises amplifier chip and reed switch relay; The 1st pin of said reed switch relay is connected with the switch of unit sheet control pin; The 2nd pin is connected with reception antenna; The 3rd pin is connected with the 1st pin of amplifier chip, the 4th pin and the equal ground connection of the 5th pin; The 2nd pin of said amplifier chip is connected with frequency synthesis type TV tuner, and the 3rd pin connects high level, the 4th pin ground connection.
Described intelligence is the frequency interferometer surely, wherein, between the A/D pin of frequency synthesis type TV tuner and single-chip microcomputer, is provided with detection filter circuit.
Described intelligence is the frequency interferometer surely; Wherein, Said detection filter circuit comprises detector diode and filter capacitor; The anode of said detector diode is connected with frequency synthesis type TV tuner; Negative electrode is connected with an end of filter capacitor and the A/D pin of single-chip microcomputer respectively, the other end ground connection of said filter capacitor.
Described intelligence is the frequency interferometer surely, and wherein, said low frequency power amplifying emission device, intermediate frequency power amplification reflector and high frequency power amplifying emission device respectively are two.
Described intelligence is the frequency interferometer surely; Wherein, Low frequency power amplifying emission device is used for amplifying and launching the radio signal of 40MHz ~ 110MHz frequency band; Intermediate frequency power amplification reflector is used for amplifying and launching the radio signal of 110MHz ~ 320MHz frequency band, and high frequency power amplifying emission device is used for amplifying and launching the radio signal of 310MHz ~ 920MHz frequency band.
Described intelligence is the frequency interferometer surely, and wherein, it is the integrated chip of STC12C5A32AD that said single-chip microcomputer adopts model.
Described intelligence is the frequency interferometer surely, and wherein, the model of frequency synthesis type TV tuner is BLH-DBT-AD703.
Intelligence provided by the invention frequency interferometer surely comprises reception antenna, preamplifier, frequency synthesis type TV tuner, integrated digital frequency synthesizer, basic, normal, high frequency power amplification reflector and single-chip microcomputer and transmitting antenna.Compared to prior art; The present invention makes the fixed interferometer frequently of intelligence be introduced into first mode of operation earlier; By the closeall power amplification transmitter of single-chip microcomputer; Open preamplifier; The radio signal that reception antenna receives is amplified; And controlled frequency synthesis type TV tuner receives and exports to single-chip microcomputer by the signal that frequency is exported preamplifier in whole frequency; The wireless signal of controlled frequency synthesis type TV tuner output is sampled and store by single-chip microcomputer; Make the fixed interferometer frequently of intelligence get into second mode of operation then; And close each power amplification transmitter earlier by single-chip microcomputer; Opening preamplifier amplifies the whole faint radio signal that reception antenna receives; Receive by the signal of frequency in whole frequency by frequency synthesis type TV tuner afterwards preamplifier output; The intensity of the signal that receives is delivered to single-chip microcomputer; By single-chip microcomputer signal stored in these signals and first mode of operation is compared afterwards and find out emerging radio signal; And open corresponding power amplification transmitter, the interfering signal that the integrated digital frequency synthesizer is produced is amplified the back and is gone out by transmission antennas transmit and cover said emerging radio signal and play interference effect.Therefore the present invention only needs emerging illegal signals is disturbed, and intelligence is with strong points, saves the energy greatly.And intelligence provided by the invention surely frequently interferometer adopt the mode of decide the frequency interference; Rather than traditional jamming equipment carries out wide spectrum scan interference; Satisfied the requirement little, that can not allow illegal signals invade in the scanning neutral of the needed power output of equal interference level, and remarkably productive.In addition, intelligence provided by the invention frequency interferometer does not surely produce interference to legal signal, does not have the bad environment influence.
Description of drawings
The intelligence that Fig. 1 provides for the embodiment of the invention is the structured flowchart of interferometer frequently surely.
Fig. 2 is the intelligence provided by the invention sketch map of the preamplifier of frequency interferometer surely.
Fig. 3 is the intelligence provided by the invention structural representation of the frequency synthesis type TV tuner of frequency interferometer surely.
Fig. 4 is the intelligence provided by the invention circuit theory diagrams of the detection of interferometer filter frequently surely.
Fig. 5 is the intelligence provided by the invention frequently low frequency of interferometer, the structural representation of intermediate frequency power amplification reflector surely.
Embodiment
The present invention provide a kind of intelligence surely frequently interferometer have two kinds of mode of operations, first mode of operation is that the fixed interferometer frequently of intelligence carries out frequency scanning repeatedly several times in whole effective frequency range, detects the radio signal strength of each frequency and with its storage.Second mode of operation is that the fixed interferometer frequently of intelligence carries out frequency scanning in whole effective frequency range, and the radio signal strength that detects each frequency is made comparisons with the numerical value of this frequency of having stored; If the frequency signal intensity of finding a certain frequency is greater than 0 (and the former storing value of corresponding frequency is 0), then produce one very strong radio signal, with the radio signal covering of detected frequency at this frequency.And intelligence of the present invention frequency interferometer surely can be bound a plurality of controlled transmitting antennas, thereby realizes the radio signal of detected a plurality of frequencies is covered.
In intelligence of the present invention when frequently interferometer is used for disturbing illegal radio signal surely; At first need with intelligence surely frequently in the interferometer stored signal data empty; Confirming that periphery does not have the time of the illegal wireless signal of telecommunication then; Enter into first mode of operation; Peripheral radio signal spectrum distribution situation is stored, and this storing process can carry out repeatedly repeatedly.When intelligence surely frequently interferometer be applied under the situation that meeting or examination hall etc. need shield the illegal wireless signal of telecommunication; Make the fixed interferometer frequently of intelligence get into second mode of operation; The fixed interferometer frequently of intelligence this moment detects peripheral emerging radio signal earlier; Produce strong interference signal at this frequency then, emerging illegal radio signal is override.The program setting of the fixed interferometer frequently of intelligence inside carries out frequency spectrum detection again after a period of time (as 1 minute), get into afterwards again and disturb, and circulation overrides all emerging frequency signals so repeatedly.
For making the object of the invention, technical scheme and effect clearer, clear and definite, below develop simultaneously embodiment to further explain of the present invention with reference to accompanying drawing.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 1, intelligence provided by the invention frequency interferometer surely comprises reception antenna 11, preamplifier 21, frequency synthesis type TV tuner 31, a plurality of integrated digital frequency synthesizer 41, at least one low frequency power amplifying emission device 51, at least one intermediate frequency power amplification reflector 61, at least one high frequency power amplifying emission device 71, a plurality of transmitting antenna 81 and single-chip microcomputer 91.
Said reception antenna 11 is connected with preamplifier 21; Said preamplifier 21 is connected with frequency synthesis type TV tuner 31 with single-chip microcomputer 91 respectively; Said single-chip microcomputer 91 respectively with low frequency power amplifying emission device 51; Intermediate frequency power amplification reflector 61 is connected with high frequency power amplifying emission device 71; Said low frequency power amplifying emission device 51; Intermediate frequency power amplification reflector 61 respectively is connected with single-chip microcomputer 91 through an integrated digital frequency synthesizer 41 with high frequency power amplifying emission device 71, said low frequency power amplifying emission device 51; Intermediate frequency power amplification reflector 61 also is connected with a transmitting antenna 81 respectively with high frequency power amplifying emission device 71.
Wherein, said reception antenna 11 is used to receive radio signals; Preamplifier 21 is used for the radio signal that reception antenna 11 receives is amplified; Frequency synthesis type TV tuner 31 is used for the signal by 21 outputs of frequency receiving preamplifier, and the signal strength signal intensity that receives is sent to single-chip microcomputer 91; Integrated digital frequency synthesizer 41 is used for producing corresponding oscillation frequency signal and output according to the control signal of single-chip microcomputer 91.
Said low frequency power amplifying emission device 51 is used to amplify and launch the low-frequency oscillation frequency signal that connected numerical frequency transducer produces; Intermediate frequency power amplification reflector 61 is used to amplify and launch the medium-frequency oscillator frequency signal that connected numerical frequency transducer produces; High frequency power amplifying emission device 71 is used to amplify and launch the higher-order of oscillation frequency signal that connected numerical frequency transducer produces; Said transmitting antenna 81 is used for the oscillation frequency signal of the connected low frequency power amplifying emission device of corresponding emission 51, intermediate frequency power amplification reflector 61 or 71 outputs of high frequency power amplifying emission device.
Said single-chip microcomputer 91 is used to control the work of preamplifier 21, frequency synthesis type TV tuner 31, integrated digital frequency synthesizer 41, low frequency power amplifying emission device 51, intermediate frequency power amplification reflector 61 and high frequency power amplifying emission device 71, and the fixed interferometer frequently of control intelligence gets into first mode of operation and second mode of operation respectively.
Wherein, said first mode of operation is sampled to radio signal on every side in whole effective frequency range for the fixed interferometer frequently of intelligence and is stored; Second mode of operation detects radio signal on every side in whole effective frequency range for the fixed interferometer frequently of intelligence; And compare with the sampled result of first mode of operation storage and to draw emerging radio signal, and produce interference signal at the frequency of this emerging radio signal and cover said emerging radio signal.
Please continue to consult Fig. 1; The intelligence that provides in the instance of the present invention surely frequently interferometer also comprise and empty button K1; The said button K1 that empties is connected with single-chip microcomputer 91; Emptying button K1 is key switch; Its two ends are connected with single-chip microcomputer 91 corresponding two pins, are used for emptying single-chip microcomputer 91 signal stored frequency spectrum datas.
In the embodiment of the invention, said intelligence frequency interferometer surely also comprises control switch K2, and said control switch K2 is connected with single-chip microcomputer 91.Said control switch K2 is a toggle switch, and its two ends are connected with single-chip microcomputer 91 corresponding two pins, is used to control the fixed mode of operation of interferometer frequently of intelligence.Wherein, the mode of operation of said control switch K2 control is that to be operated in first mode of operation still be second mode of operation to single-chip microcomputer 91 internal processes.
See also Fig. 1 and Fig. 2; Preamplifier 21 comprises amplifier chip U1 and reed switch relay K3; The 1st pin of said reed switch relay K3 is connected with the switch of unit sheet control pin; The 2nd pin is connected with reception antenna 11; The 3rd pin is connected with the 1st pin of amplifier chip U1, the 4th pin and the equal ground connection of the 5th pin; The 2nd pin of said amplifier chip U1 is connected with frequency synthesis type TV tuner 31, and the 3rd pin connects high level, the 4th pin ground connection.
In the embodiment of the invention; It is the integrated chip of μ PC1651 that said amplifier chip U1 adopts model; It has only four pins; Wherein, The 1st pin is that micro-signal input pin, the 2nd pin are power pins for amplification output pin, the 3rd pin; Be used to insert the power supply of 5V, the 4th pin is a grounding pin.This amplifier chip U1 can carry out the amplification of low noise high-gain to the small-signal in the frequency range of 40 ~ 1000MHz.The switch of said reed switch relay K3 is by the guiding of the switch of single-chip microcomputer 91 control pin: relay is directed into ground during for closed condition, and signal does not get into single-chip microcomputer 91 at this moment; When relay is open mode; Single-chip microcomputer 91 makes 1st pin of relay conducting to μ PC1651 chip; Export from the 2nd pin of amplifier chip U1 after the amplification of the small-signal that reception antenna 11 receives through amplifier chip U1 broadband low noise high-gain, deliver in the frequency synthesis type TV tuner 31.
It is the integrated chip of STC12C5A32AD that said single-chip microcomputer 91 adopts model, and it is a high speed 51 series monolithics 91.It is the single clock instruction; Except programming in logic function with general single-chip microcomputer; Inside also is furnished with 8 tunnel 8 high-speed AD converters (A/D); Can convert the analog signal that receives into binary numeral in real time; EEPROM (the Electrically Erasable Programmable Read-Only Memory that also is furnished with 28K in this single-chip microcomputer 91; EEPROM (Electrically Erasable Programmable Read Only Memo)), can be used for the long preservation data.The EEPROM that 28KB is arranged in the single-chip microcomputer 91 enough deposits 20K frequency in frequency synthesis type TV tuner 31 whole frequency.
In the present embodiment, said single-chip microcomputer 91 has 44 programmable signal pins, and these pins can become many I2C serial signal line to remove to be provided with frequency synthesis type TV tuner 31 and each integrated digital frequency synthesizer 41 respectively through software simulation; It can also control relay removes the signal that distributes reception antenna 11 to receive, and the work that can control preamplifier 21 and each power amplification reflector whether.
Please consult Fig. 1 and Fig. 3 in the lump; The intelligence provided by the invention frequency synthesis type TV tuner 31 of frequency interferometer surely is the device on the television receiver; Its model is BLH-DBT-AD703; The 15 bit sign indicating numbers that this frequency synthesis type TV tuner 31 is sent here through universal serial bus; Can amplify reception accurately from 45MHz to 900MHz, at interval the signal of each frequency of 50KHz.Single-chip microcomputer 91 passes through universal serial bus; The control tuner receives by the signal of frequency to preamplifier 21 outputs in whole frequency; And the intensity of the signal that receives delivered on the analog-to-digital conversion pin of single-chip microcomputer 91; Convert binary numeral in the analog to digital converter through single-chip microcomputer 91 inside, and deposit among the EEPROM of single-chip microcomputer 91.
In the present embodiment, said frequency synthesis type TV tuner 31 has 15 pins and two antennal interfaces 311,312.Signal in 48 ~ 900MHz scope of preamplifier 21 outputs is introduced from the antennal interface 311,312 of frequency synthesis type TV tuner 31.Wherein, Become the 1st pin output of the stronger signal of fixing 36MHz from frequency synthesis type TV tuner 31 after having only the specified frequency signal to be amplified by frequency synthesis type TV tuner 31 in the signal of introducing, the signal of other frequencies is then suppressed by frequency synthesis type TV tuner 31.
In the said integrated digital frequency synthesizer 41 integrated medium frequency synthesis type TV tuners 31, its quantity is corresponding with the quantity of low frequency power amplifying emission device 51, intermediate frequency power amplification reflector 61 and high frequency power amplifying emission device 71.The model that these integrated digital frequency synthesizer 41 employing Philips produce is the frequency synthesis chip of TDA6651.The 15 bit sign indicating numbers that this chip is sent here through universal serial bus can produce from 45MHz to 900MHz accurately, at interval the sine wave signal of each frequency of 50KHz.Single-chip microcomputer 91 makes the integrated digital frequency synthesizer 41 that is connected produce the newly-increased frequency signal that all are detected respectively through universal serial bus, amplifies and delivers on the transmitting antenna 81 and launch through each power amplification reflector.
Because the reception amplifying signal frequency of frequency synthesis type TV tuner 31 epicranium appointments is than the low 36MHz of its local frequency; Therefore need the low 36MHz of local frequency of the output frequency of the integrated digital frequency synthesizer 41 of control, just can make the output frequency of integrated digital frequency synthesizer 41 select the amplifying signal frequency identical with frequency synthesis type TV tuner 31 than frequency synthesis type TV tuner 31.These are provided with by single-chip microcomputer 91 realizes for respectively frequency synthesis type TV tuner 31 and corresponding 15 binary codes of integrated digital frequency synthesizer 41 transmissions through serial signal line.
The 8th pin and the 9th pin of frequency synthesis type TV tuner 31 are the serial line interface pin; It is integrated in frequency synthesis type TV tuner 31 inner integrated digital frequency synthesizers through the serial signal control from single-chip microcomputer 91 inputs and produces stable local frequency, thereby makes frequency synthesis type TV tuner 31 receive only the input signal than the low 36MHz of local frequency.The local frequency signal of frequency synthesis type TV tuner 31 draws output from the 6th, and the 2nd pin of frequency synthesis type TV tuner 31 and the 11st pin provide the voltage of 5V for the integrated digital frequency synthesizer, and the shell of frequency synthesis type TV tuner 31 is a ground wire.
Because the frequency band of power amplifier is narrow, so single-chip microcomputer 91 will distribute the power amplifier that uses different frequency range according to the height of tranmitting frequency.Therefore intelligence provided by the invention surely frequently interferometer comprise three kinds of power amplification reflectors: low frequency power amplifying emission device 51, intermediate frequency power amplification reflector 61 and high frequency power amplifying emission device 71.
The model that low frequency and intermediate frequency power amplification reflector 61 adopt Fujitsu to produce is the FLL120 integrated power amplifier, and its working frequency range is 20MHz ~ 500MHz.The model that high frequency power amplifying emission device 71 adopts Hitachi, Ltd to produce is the microwave integrated amplifier chip of PF01411A, and its working frequency range is 400MHz ~ 2000MHz.This two chips all has stable performance, control characteristic of simple.And these two kinds of chips only have signal input, power output, power supply and switch control, through the high-low level on the switch pin of single-chip microcomputer 91 power controlling amplifying emission devices, promptly can open and close corresponding power amplification reflector.
See also Fig. 1 and Fig. 5; It is the structural representation of low frequency, intermediate frequency power amplification reflector; The 2nd pin of this power amplification reflector receives the frequency signal of integrated digital frequency synthesizer 41 outputs; Export transmitting antenna 81 through amplifying the back to from the 3rd pin, by transmitting antenna 81 frequency signal is transmitted into the space afterwards through the inner amplifying circuit of power amplification reflector.The 4th pin is a power pins; The ground wire pin that copper radiating rib 5 forms the power amplification reflector, the 1st pin is a switch pin, is connected on the switch control pin of single-chip microcomputer 91; The power amplification reflector is not worked when this pin is low level, and the power amplification reflector is just worked during high level.
In the present embodiment; Low frequency power amplifying emission device 51 is used for amplifying and launching the radio signal of 40MHz ~ 110MHz frequency band; Intermediate frequency power amplification reflector 61 is used for amplifying and launching the radio signal of 110MHz ~ 320MHz frequency band, and high frequency power amplifying emission device 71 is used for amplifying and launching the radio signal of 310MHz ~ 920MHz frequency band.
And, intelligence provided by the invention surely frequently the power amplifier of each frequency range of interferometer be two (they being that said low frequency power amplifying emission device 51, intermediate frequency power amplification reflector 61 and high frequency power amplifying emission device 71 respectively are two).Certainly, in order to reach better effect, the power amplification reflector of each frequency range also can adopt more than two, to disturb a plurality of illegal signals frequencies that occur simultaneously.When the quantity of the power amplification reflector that connects surpasses the quantity of Single-chip Controlling pin, can also realize that it is a prior art, repeats no more here through single-chip microcomputer IO expansion means.
See also Fig. 4, intelligence provided by the invention frequency interferometer surely is provided with detection filter circuit 101 between the A/D pin of frequency synthesis type TV tuner 31 and single-chip microcomputer 91.Said detection filter circuit comprises detector diode D1 and filter capacitor C1; The anode of said detector diode is connected with frequency synthesis type TV tuner 31; Negative electrode is connected the other end ground connection of said filter capacitor with an end of filter capacitor and the A/D pin of single-chip microcomputer 91 respectively.
The level of signal strength that said detection filter circuit 101 detections are come out is the intensity of signal on the frequency synthesis type TV tuner 31 specified reception frequencies.So the stool and urine of binary numerical value that Chip Microcomputer A/D changes is out being represented the intensity of this frequency signal.If the intensity of frequency is zero, then changing the binary numerical value that comes out also is zero.
Below in conjunction with Fig. 1, to intelligence provided by the invention surely frequently the interferometer working method be elaborated:
Using intelligence provided by the invention surely frequently during interferometer, at first pressing and empty button K1 data and make emptying of single-chip microcomputer 91 stored.Confirming that periphery does not have the time of the illegal wireless signal of telecommunication then, stirring control switch K2 and make the fixed interferometer frequently of intelligence get into first mode of operation (, then need not stir control switch K2) if this moment, control switch K2 was the state that points to the first work carpenter.At this moment; Single-chip microcomputer 91 output control signals; Close all power amplification reflectors through its switch control pin; Opening receiving preamplifier 21 amplifies whole small-signals that reception antenna 11 receives; And pass through universal serial bus by single-chip microcomputer 91; Control frequency synthesis type TV tuner 31 receives by the signal of frequency to preamplifier 21 output in whole frequency, and the intensity of the signal that receives delivered to converts binary numeral in the analog to digital converter of single-chip microcomputer 91 and deposit among the EEPROM of single-chip microcomputer 91.During practical implementation, this detection, storing process can carry out repeatedly repeatedly, make its to around the storage of all sampling of legal signal.
To intelligence surely frequently the radio signal around the interferometer adopt and storage after, stir control switch K2 and make the fixed interferometer frequently of intelligence get into second mode of operation.In this mode of operation, at first, single-chip microcomputer 91 transmit button control signals are closed all power amplification reflectors, are opened whole small-signals amplifications that preamplifier 21 receives reception antenna 11.Simultaneously; Single-chip microcomputer 91 receives by the signal of frequency to preamplifier 21 outputs in whole frequency through serial bus control frequency synthesis type TV tuner 31; And the intensity of the signal that receives delivered in the analog to digital converter of single-chip microcomputer 91 and convert binary numeral into, the numerical value that stores among the EEPROM through single-chip microcomputer 91 and same frequency under first mode of operation compares afterwards.If the numerical value of storing during first mode of operation is zero, and the numerical value that receives under second mode of operation is not zero, the signal that this frequency then is described is emerging frequency signal, and single-chip microcomputer 91 is write down this newly-increased frequency.
After all emerging frequencies were all write down in the frequency range, single-chip microcomputer 91 cut out preamplifier 21 through switch control pin and causes components from being damaged to prevent strong signal, and opens and the corresponding power amplification reflector of the frequency band of each frequency.Single-chip microcomputer 91 is controlled each integrated digital frequency synthesizer 41 that is connected respectively through universal serial bus; Oscillation frequency signal by each integrated digital frequency synthesizer 41 all newly-increased frequency signals that detect of generation; Amplify and deliver on the transmitting antenna 81 and launch through corresponding power amplification reflector, thereby play the interference effect of radio signal newly to occur.
In sum, the present invention only needs emerging illegal signals is disturbed, and intelligence is with strong points, saves the energy greatly.And intelligence provided by the invention surely frequently interferometer adopt the mode of decide the frequency interference; Rather than traditional jamming equipment carries out wide spectrum scan interference; Satisfied the requirement little, that can not allow illegal signals invade in the scanning neutral of the needed power output of equal interference level, and remarkably productive.In addition, intelligence provided by the invention frequency interferometer does not surely produce interference to legal signal, does not have the bad environment influence.
Be understandable that, concerning those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. intelligence interferometer frequently surely is characterized in that, comprising:
The reception antenna that is used to receive radio signals;
Be used for preamplifier that the radio signal that reception antenna receives is amplified;
Be used for signal, and the signal strength signal intensity that receives is sent to the frequency synthesis type TV tuner of single-chip microcomputer by the output of frequency receiving preamplifier;
A plurality of integrated digital frequency synthesizers that are used for producing corresponding oscillation frequency signal and output according to the control signal of single-chip microcomputer;
At least one low frequency power amplifying emission device that is used to amplify and launch the low-frequency oscillation frequency signal;
At least onely be used to amplify and the intermediate frequency power amplification reflector of emission medium-frequency oscillation frequency signal;
At least one high frequency power amplifying emission device that is used to amplify and launch higher-order of oscillation frequency signal;
A plurality of transmitting antennas that are used for launching respectively the oscillation frequency signal of low frequency power amplifying emission device, intermediate frequency power amplification reflector and the output of high frequency power amplifying emission device; And
Be used to control the work of preamplifier, frequency synthesis type TV tuner, integrated digital frequency synthesizer, low frequency power amplifying emission device, intermediate frequency power amplification reflector and high frequency power amplifying emission device, and the fixed interferometer frequently of control intelligence gets into the single-chip microcomputer of first mode of operation and second mode of operation respectively; Wherein, said first mode of operation is sampled to radio signal on every side in whole effective frequency range for the fixed interferometer frequently of intelligence and is stored; Second mode of operation detects radio signal on every side in whole effective frequency range for the fixed interferometer frequently of intelligence; And compare with the sampled result of first mode of operation storage and to find out emerging radio signal, and produce interference signal at the frequency of this emerging radio signal and cover said emerging radio signal;
Said reception antenna is connected with preamplifier; Said preamplifier is connected with frequency synthesis type TV tuner with single-chip microcomputer respectively; Said single-chip microcomputer is connected with low frequency power amplifying emission device, intermediate frequency power amplification reflector and high frequency power amplifying emission device respectively; Said low frequency power amplifying emission device, intermediate frequency power amplification reflector and high frequency power amplifying emission device respectively are connected with single-chip microcomputer through an integrated digital frequency synthesizer, and said low frequency power amplifying emission device, intermediate frequency power amplification reflector and high frequency power amplifying emission device also are connected with a transmitting antenna respectively.
2. intelligence according to claim 1 is interferometer frequently surely, it is characterized in that, also comprises the button that empties that is used for emptying data that single-chip microcomputer stores, and the said button that empties is connected with single-chip microcomputer.
3. intelligence according to claim 1 is the frequency interferometer surely, it is characterized in that, also comprises being used to control the fixed control switch of the mode of operation of interferometer frequently of intelligence, and said control switch is connected with single-chip microcomputer.
4. intelligence according to claim 1 is the frequency interferometer surely; It is characterized in that; Preamplifier comprises amplifier chip and reed switch relay; The 1st pin of said reed switch relay is connected with the switch of unit sheet control pin; The 2nd pin is connected with reception antenna; The 3rd pin is connected with the 1st pin of amplifier chip, the 4th pin and the equal ground connection of the 5th pin; The 2nd pin of said amplifier chip is connected with frequency synthesis type TV tuner, and the 3rd pin connects high level, the 4th pin ground connection.
5. intelligence according to claim 1 is the frequency interferometer surely, it is characterized in that, between the A/D pin of frequency synthesis type TV tuner and single-chip microcomputer, is provided with detection filter circuit.
6. intelligence according to claim 5 is the frequency interferometer surely; It is characterized in that; Said detection filter circuit comprises detector diode and filter capacitor; The anode of said detector diode is connected with frequency synthesis type TV tuner; Negative electrode is connected with an end of filter capacitor and the A/D pin of single-chip microcomputer respectively, the other end ground connection of said filter capacitor.
7. intelligence according to claim 1 is the frequency interferometer surely, it is characterized in that said low frequency power amplifying emission device, intermediate frequency power amplification reflector and high frequency power amplifying emission device respectively are two.
8. intelligence according to claim 1 is the frequency interferometer surely; It is characterized in that; Low frequency power amplifying emission device is used for amplifying and launching the radio signal of 40MHz ~ 110MHz frequency band; Intermediate frequency power amplification reflector is used for amplifying and launching the radio signal of 110MHz ~ 320MHz frequency band, and high frequency power amplifying emission device is used for amplifying and launching the radio signal of 310MHz ~ 920MHz frequency band.
9. intelligence according to claim 1 is the frequency interferometer surely, it is characterized in that, it is the integrated chip of STC12C5A32AD that said single-chip microcomputer adopts model.
10. intelligence according to claim 1 is the frequency interferometer surely, it is characterized in that the model of frequency synthesis type TV tuner is BLH-DBT-AD703.
Priority Applications (1)
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| CN102694555A (en) * | 2012-05-22 | 2012-09-26 | 成都九华圆通科技发展有限公司 | Miniaturized intelligent signal suppressor |
| CN103312358A (en) * | 2013-05-22 | 2013-09-18 | 廖华芬 | Respond wireless interference signal generator and method thereof |
| CN103840817A (en) * | 2012-11-23 | 2014-06-04 | 义隆电子股份有限公司 | Sampling method for avoiding fixed frequency interference source |
| 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 |
| CN105827358A (en) * | 2016-06-03 | 2016-08-03 | 广州市诚臻电子科技有限公司 | Device and system for shielding effectiveness detection |
| CN106533609A (en) * | 2016-12-15 | 2017-03-22 | 深圳市飞思腾科技有限公司 | Digital signal interferometer |
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