CN115021863A - Single network cable extender for data transmission - Google Patents
Single network cable extender for data transmission Download PDFInfo
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- 230000002452 interceptive effect Effects 0.000 claims description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/20—Countermeasures against jamming
- H04K3/22—Countermeasures against jamming including jamming detection and monitoring
- H04K3/224—Countermeasures against jamming including jamming detection and monitoring with countermeasures at transmission and/or reception of the jammed signal, e.g. stopping operation of transmitter or receiver, nulling or enhancing transmitted power in direction of or at frequency of jammer
- H04K3/228—Elimination in the received signal of jamming or of data corrupted by jamming
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- H04N7/015—High-definition television systems
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Abstract
The invention relates to a single network cable extender for data transmission, which relates to the technical field of HDMI digital high-definition signal transmission and comprises a signal receiving end, a signal sending end, a first interference signal receiving antenna and a first interference signal shielding antenna which are arranged on an external shell of the signal receiving end, a second interference signal receiving antenna and a second interference signal shielding antenna which are arranged on an external shell of the signal sending end, a first processing module and a second processing module, by respectively arranging a receiving antenna for receiving an external interference signal and a shielding antenna for shielding the signal at the signal receiving end and the signal transmitting end, the received external interference signal is analyzed, and the external interference signal is shielded in real time according to the analysis result, so that the detection precision of the extender on the signal in the complex environment is improved, and the accuracy of the extender on signal transmission in the complex environment is further improved.
Description
Technical Field
The invention relates to the technical field of HDMI digital high-definition signal transmission, in particular to a single-network-cable extender for data transmission.
Background
The network cable extender is used as a relay for realizing remote lossless image and audio transmission, has outstanding contribution to realizing remote transmission, and provides convenience for the existing video transmission, thereby being widely applied in various fields and playing an outstanding role in the development of various fields.
The existing network cable extender applies the most scenes to the configuration of an audio and video end, provides possibility for audio and video lossless transmission, greatly improves the transmission distance and transmission efficiency through the combination of an HDMI network cable and the network cable extender in the existing video transmission, but cannot be diffused into all fields.
Chinese patent publication No.: CN103219625B discloses an HDMI and control signal single-cable extender, which includes a transmitting end and a receiving end connected to each other by a cable; the transmitting terminal comprises an HDMI signal receiving device, a Linx-Net protocol coding device, a transmitting terminal power supply device and a transmitting terminal central control device; the receiving end comprises an HDMI signal transmitting device, a Linx-Net protocol decoding device, a receiving end power supply device and a receiving end central control device; the HDMI signal receiving device is connected with the Linx-Net protocol coding device; the transmitting end power supply device is respectively connected with the HDMI signal receiving device, the Linx-Net protocol coding device and the transmitting end central control device; the transmitting end central control device is respectively connected with the HDMI signal receiving device and the Linx-Net protocol coding device; the HDMI signal transmitting device is connected with the Linx-Net protocol decoding device; the HDMI signal network cable extender can meet the requirement of long-distance HDMI transmission of a user; therefore, the HDMI and control signal single-network-cable extender can only realize long-distance transmission, and when the HDMI and control signal single-network-cable extender faces long-distance transmission in a complex environment, interference signals in the complex environment cannot be accurately detected and transmission cannot be accurately controlled.
Disclosure of Invention
Therefore, the invention provides a single-network-cable extender for data transmission, which is used for solving the problems that interference signals in a complex environment cannot be accurately detected and transmission cannot be accurately controlled when remote transmission in the complex environment is faced in the prior art.
In order to achieve the above object, the present invention provides a single-cable extender for data transmission, comprising:
a signal receiving end and a signal transmitting end;
the first interference signal receiving antenna is arranged on an outer shell of the signal receiving end and connected with a first processing module in the signal receiving end, and the first interference signal receiving antenna is used for detecting an external interference signal of the signal receiving end;
the second interference signal receiving antenna is arranged on the outer shell of the signal sending end and connected with a second processing module in the signal sending end, and the second interference signal receiving antenna is used for detecting an external interference signal of the signal sending end;
the first interference signal shielding antenna is arranged on an outer shell of the signal receiving end and connected with a first processing module in the signal receiving end, and is used for shielding an external interference signal of the signal receiving end;
the second interference signal shielding antenna is arranged on an external shell of the signal sending end and connected with a second processing module in the signal sending end, and the second interference signal shielding antenna is used for shielding an external interference signal of the signal sending end;
the first processing module comprises a first acquisition unit for acquiring the transmission signal received by the signal receiving terminal, a second acquisition unit for acquiring the external interference signal, a first signal analysis unit for analyzing and determining whether the external interference signal interferes with the transmission signal, and a first shielding unit for determining a shielding signal parameter according to an analysis result of the first signal analysis unit;
the second processing module comprises a third acquisition unit for acquiring the analysis result of the signal receiving end, a fourth acquisition unit for acquiring the external interference signal of the signal sending end, a second signal analysis unit for analyzing and determining whether the external interference signal of the signal receiving end interferes with the transmission signal, and a second shielding unit for determining the shielding signal parameter according to the analysis result of the second signal analysis unit.
Further, when the transmission signal obtained by the first obtaining unit and the external interference signal obtained by the second obtaining unit are completed, the first signal analyzing unit determines an interference rate P of the external interference signal to the transmission signal according to a signal parameter of the external interference signal, and sets P = (W/Wc) × α + (λ/λ c) × β + (F/Fc) × γ, where W is a transmission rate of the external interference signal, Wc is a transmission rate of the transmission signal, α is an interference coefficient corresponding to the transmission rate, λ is a wavelength of the external interference signal, λ c is a wavelength of the transmission signal, β is an interference coefficient corresponding to the wavelength, F is an amplitude of the external interference signal, Fc is an amplitude of the transmission signal, and γ is an interference coefficient corresponding to the amplitude.
Further, when the first signal analysis unit determines that the interference rate of the external interference signal to the transmission signal is completed, the first shielding unit determines the shielding signal strength of the first interference signal shielding antenna according to the comparison result of the interference rate and a preset interference rate,
wherein, the first shielding unit is provided with a first preset interference ratio P1, a second preset interference ratio P2, a first shielding signal strength U1, a second shielding signal strength U2 and a third shielding signal strength U3, wherein P1 is less than P2, U1 is less than U2 and less than U3,
when P ≦ P1, the first shielding unit sets the shielding signal strength to U1;
when P1 < P ≦ P2, the first shielding unit sets the shielding signal strength to U2;
when P > P2, the first shielding unit sets the shielding signal strength to U3.
Further, the first signal analysis unit determines the type of the external interference signal according to an analysis result when analyzing the external interference signal, and calculates the complexity R of the external interference signal according to an interference rate corresponding to the external interference signal and the external interference signal under a corresponding type, and sets R = Ug1 × fi + Ug2 × fi + … + Ugn × fi, where Ug1 is the first type external interference signal intensity, Ug2 is the second type external interference signal intensity, Ugn is the nth type external interference signal intensity, fi is a complexity coefficient corresponding to the corresponding type external interference signal intensity, and sets i =1, 2, 3.
Further, when calculating the complexity of the external interference signal, the first signal analysis unit determines a complexity coefficient corresponding to the strength of the external interference signal according to a comparison result between the strength Ug of the external interference signal and a preset signal strength,
wherein the first signal analysis unit is provided with a first preset signal strength Uy1, a second preset signal strength Uy2, a first complexity coefficient f1, a second complexity coefficient f2 and a third complexity coefficient f3, wherein Uy1 < Uy2, f1 < f2 < f3,
when Ug is less than or equal to Uy1, the first signal analysis unit sets a complexity coefficient corresponding to the external interference signal strength as f 1;
when Uy1 is more than Ug and less than or equal to Uy2, the first signal analysis unit sets the complexity coefficient corresponding to the external interference signal strength as f 2;
when Ug > Uy2, the first signal analysis unit sets a complexity coefficient corresponding to the external interference signal strength to f 3.
Further, the first signal analysis unit compares the complexity R of the external interference signal with a preset complexity R0 when the complexity of the external interference signal is calculated, determines whether to adjust the shielding signal strength according to the comparison result,
if R is less than or equal to R0, the first signal analysis unit judges that the shielding signal strength is adjusted;
if R > R0, the first signal analysis unit decides to adjust the masking signal strength.
Further, when the first signal analysis unit determines to adjust the shielding signal intensity, the first signal analysis unit calculates a complexity difference Δ R between the complexity R and a preset complexity R0, and sets Δ R = R-R0, the first shielding unit selects a corresponding adjustment coefficient according to a comparison result between the complexity difference and the preset complexity difference to adjust the shielding signal intensity, and the first shielding unit sets the adjusted shielding signal intensity as U4 and sets U4= Ue × Kj, where Kj is an intensity adjustment coefficient, e =1, 2, 3.
Further, when the first signal analysis unit sends a shielding signal for a preset time length, it determines whether the first acquisition unit still acquires an external interference signal, and when the external interference signal is acquired, analyzes the external interference signal, determines whether to transmit the signal to the signal sending end according to a comparison result of the interference rate P and a preset interference rate P0,
if P is less than P0, the first signal analysis unit judges that the transmission signal is transmitted to a signal transmitting terminal;
and if P is more than or equal to P0, the first signal analysis unit judges that no signal is transmitted to the signal sending end.
Further, when the signal sending end receives the transmission signal of the signal receiving end, the third obtaining unit obtains an analysis result of the signal receiving end and the transmission signal received by the signal receiving end, the second signal analyzing unit compares whether the transmission signal has signal attenuation, and if the signal attenuation exists, the signal attenuation rate Z is determined;
the second signal analysis unit determines whether an external interference signal and an interference rate P of the external interference signal exist or not when receiving the transmission signal, the second shielding unit determines the shielding signal strength of the second interference signal shielding antenna according to a comparison result of the interference rate P and a preset interference rate, the second signal analysis unit determines whether the shielding signal strength is corrected or not according to a comparison result of the signal attenuation rate Z and a preset signal attenuation rate Z0 when the second shielding unit determines that the shielding signal strength is finished,
if Z > Z0, the second signal analysis unit judges that the shielding signal strength of the second interference signal shielding antenna is corrected;
and if Z is less than or equal to Z0, the second signal analysis unit judges that the shielding signal strength of the second interference signal shielding antenna is not corrected.
Further, when the second signal analysis unit determines to correct the shielding signal intensity of the second interference signal shielding antenna, the second signal analysis unit calculates an attenuation rate difference Δ Z between the attenuation rate and a preset attenuation rate, and sets Δ Z = Z-Z0, the second shielding unit selects a corresponding correction coefficient according to a comparison result between the attenuation rate difference and the preset attenuation rate difference to correct the shielding signal intensity, and the second shielding unit sets the corrected shielding signal intensity to be U5, and sets U5= Ue × Xs, where Xs is an intensity correction coefficient.
Compared with the prior art, the signal transmission method has the advantages that the receiving antenna for receiving the external interference signal and the shielding antenna for shielding the signal are respectively arranged at the signal receiving end and the signal transmitting end, the received external interference signal is analyzed, the external interference signal is shielded in real time according to the analysis result, the detection precision of the extender on the signal in the complex environment is improved, and the signal transmission precision of the extender in the complex environment is further improved.
Particularly, the first processing module and the second processing module for analyzing and processing the external interference signal are respectively arranged in the signal receiving end and the signal sending end, so that when the external interference signal is detected, the shielding signal strength is determined according to the analysis result of the external interference signal, the detection precision of the extender on the signal in the complex environment is further improved, and the signal transmission precision of the extender in the complex environment is further improved.
Furthermore, when the external interference signal is analyzed, the signal parameters of the external interference signal are obtained, the interference rate of the external interference signal to the transmission signal is calculated according to the signal parameters, the shielding signal strength is determined at the signal receiving end according to the signal interference rate, the detection precision of the extender to the signal in the complex environment is further improved, and therefore the signal transmission precision of the extender in the complex environment is further improved.
Further, when the interference signal is analyzed, whether a plurality of external interference signals exist is determined according to the analysis result, the complexity of the plurality of external interference signals is calculated when the plurality of external interference signals exist, whether the shielding signal strength set according to the interference rate is adjusted is determined according to the comparison result of the complexity of the external interference signals and the preset complexity, the detection precision of the extender on the signal in the complex environment is further improved, and the signal transmission precision of the extender in the complex environment is further improved.
Furthermore, when the complexity of the external interference signal is calculated, the first signal analysis unit is used for analyzing the intensity of the external interference signal, the complexity coefficient corresponding to the intensity of the external interference signal is determined according to the analysis result, and the complexity calculation is performed according to the complexity coefficient, so that the detection precision of the extender on the signal in the complex environment is further improved, and the signal transmission precision of the extender in the complex environment is further improved.
Furthermore, the method and the device further improve the detection precision of the extender on the signal in the complex environment by setting a plurality of preset complexity difference values and intensity adjusting coefficients and selecting the corresponding intensity adjusting coefficient to adjust the intensity of the shielding signal according to the comparison result of the calculated complexity and the preset complexity difference values with the plurality of preset complexity difference values when the intensity of the shielding signal is determined to be adjusted, thereby further improving the accuracy of the extender on the signal transmission in the complex environment.
Furthermore, the invention further improves the detection precision of the extender on the signal under the complex environment by setting the preset interference rate and determining whether to transmit the signal according to the comparison result of the interference rate of the shielded external interference signal and the preset interference rate when the setting of the shielding signal strength is finished, thereby further improving the signal transmission precision of the extender facing the complex environment.
Further, when the transmission signal is transmitted to the signal transmitting end, whether signal attenuation exists is determined according to the transmission signal received by the signal transmitting end, when the signal attenuation exists, the signal attenuation rate is determined, whether the shielding signal strength of the second interference signal shielding antenna is corrected is determined according to the comparison result of the signal attenuation rate and the preset signal attenuation rate, the detection precision of the extender on the signal in a complex environment is further improved, and therefore the accuracy of the extender on signal transmission in the complex environment is further improved.
Furthermore, the invention sets a plurality of preset attenuation rate difference values and intensity correction coefficients, selects corresponding adjustment coefficients according to the comparison result of the calculated attenuation rate difference values and the plurality of preset attenuation rate difference values to correct the intensity of the shielding signal when the shielding signal of the second interference signal shielding antenna is determined to be corrected, and further improves the detection precision of the extender on the signal in the complex environment, thereby further improving the accuracy of the extender on the signal transmission in the complex environment.
Drawings
Fig. 1 is a schematic structural diagram of a data transmission single-network extender according to the present invention;
fig. 2 is a block diagram of a first processing module in the data transmission single-network extender according to the present invention;
fig. 3 is a block diagram of a second processing module in the data transmission single-network extender according to the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in conjunction with the following examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a data transmission single-cable extender according to the present invention; fig. 2 is a block diagram of a first processing module in the data transmission single-network extender according to the present invention; fig. 3 is a block diagram of a second processing module in the data transmission single-network extender according to the present invention.
The single network cable extender for data transmission in the embodiment of the invention comprises:
the signal receiving terminal 1 is connected with the HDMI cable, the signal receiving terminal 1 is used for receiving signal data transmitted by the HDMI cable, and a receiving chip (not shown in the figure) for receiving a transmission signal and a first processing module (not shown in the figure) for acquiring the transmission signal received by the signal receiving terminal and an external interference signal are installed in the signal receiving terminal 1;
a signal transmitting end 2 electrically connected to the signal receiving end, the signal transmitting end being configured to transmit a signal transmitted by the signal receiving end to an equipment end connected to the signal transmitting end interface via an HDMI cable, the signal transmitting end being internally provided with a transmitting chip (not shown) configured to transmit the signal transmitted by the signal receiving end to the equipment end and a second processing module (not shown) configured to obtain an external interference signal;
the first interference signal receiving antenna 3 is arranged on an outer shell of the signal receiving terminal 1 and connected with a first processing module in the signal receiving terminal, and is used for detecting an external interference signal of the signal receiving terminal;
the second interference signal receiving antenna 4 is arranged on the outer shell of the signal sending end 2 and connected with a second processing module in the signal sending end, and the second interference signal receiving antenna is used for detecting an external interference signal of the signal sending end;
the first interference signal shielding antenna 5 is arranged on an outer shell of the signal receiving end and connected with a first processing module in the signal receiving end, and is used for shielding an external interference signal of the signal receiving end;
the second interference signal shielding antenna 6 is arranged on an external shell of the signal sending end and connected with a second processing module in the signal sending end, and the second interference signal shielding antenna is used for shielding an external interference signal of the signal sending end;
the signal sending end and the signal receiving end are both an alloy shell, and the first processing module and the second processing module are in communication connection, wherein,
the first processing module comprises a first acquisition unit for acquiring a transmission signal received by the signal receiving terminal, a second acquisition unit for acquiring the external interference signal, a first signal analysis unit for analyzing and determining whether the external interference signal interferes with the transmission signal, and a first shielding unit for determining a shielding signal parameter according to an analysis result of the first signal analysis unit;
the second processing module comprises a third obtaining unit for obtaining the analysis result of the signal receiving end, a fourth obtaining unit for obtaining the external interference signal of the signal sending end, a second signal analysis unit for analyzing and determining whether the external interference signal of the signal receiving end interferes with the transmission signal, and a second shielding unit for determining the shielding signal parameter according to the analysis result of the second signal analysis unit.
In the data transmission single-network-cable extender according to the embodiment of the present invention, when the transmission signal acquired by the first acquiring unit and the external interference signal acquired by the second acquiring unit are completed, the first signal analyzing unit determines an interference rate P of the external interference signal with respect to the transmission signal according to a signal parameter of the external interference signal, and sets P = (W/Wc) × α + (λ/λ c) × β + (F/Fc) × γ, where W is a transmission rate of the external interference signal, Wc is a transmission rate of the transmission signal, α is an interference coefficient corresponding to the transmission rate, λ is a wavelength of the external interference signal, λ c is a wavelength of the transmission signal, β is an interference coefficient corresponding to the wavelength, F is an amplitude of the external interference signal, Fc is an amplitude of the transmission signal, and γ is an interference coefficient corresponding to the amplitude.
In the single-cable extender for data transmission according to the embodiment of the present invention, when the first signal analysis unit determines that the interference rate of the external interference signal to the transmission signal is completed, the first shielding unit determines the shielding signal strength of the first interference signal shielding antenna according to the comparison result between the interference rate and the preset interference rate,
wherein, the first shielding unit is provided with a first preset interference ratio P1, a second preset interference ratio P2, a first shielding signal strength U1, a second shielding signal strength U2 and a third shielding signal strength U3, wherein P1 is less than P2, U1 is less than U2 and less than U3,
when P ≦ P1, the first shielding unit sets the shielding signal strength to U1;
when P1 < P ≦ P2, the first shielding unit sets the shielding signal strength to U2;
when P > P2, the first shielding unit sets the shielding signal strength to U3.
In the single network cable extender for data transmission according to the embodiment of the present invention, when analyzing the external interference signal, the first signal analysis unit determines the type of the external interference signal according to the analysis result, and calculates the complexity R of the external interference signal according to the interference rate corresponding to the external interference signal and the external interference signal in the corresponding type, and sets R = Ug1 xfi + Ug2 xfi + … + Ugn xfi, where Ug1 is the strength of the first type of external interference signal, Ug2 is the strength of the second type of external interference signal, Ugn is the strength of the nth type of external interference signal, fi is the complexity coefficient corresponding to the strength of the corresponding type of external interference signal, and i =1, 2, and 3 is set.
Specifically, when calculating the complexity of the external interference signal, the first signal analysis unit determines a complexity coefficient corresponding to the strength of the external interference signal according to a comparison result between the strength Ug of the external interference signal and a preset signal strength,
wherein the first signal analysis unit is provided with a first preset signal strength Uy1, a second preset signal strength Uy2, a first complexity coefficient f1, a second complexity coefficient f2 and a third complexity coefficient f3, wherein Uy1 < Uy2, f1 < f2 < f3,
when Ug is less than or equal to Uy1, the first signal analysis unit sets the complexity coefficient corresponding to the external interference signal strength as f 1;
when Uy1 is more than Ug and less than or equal to Uy2, the first signal analysis unit sets the complexity coefficient corresponding to the external interference signal strength as f 2;
when Ug > Uy2, the first signal analysis unit sets a complexity coefficient corresponding to the external interference signal strength to f 3.
In the data transmission single-cable extender according to the embodiment of the present invention, when calculating the complexity of the external interference signal, the first signal analysis unit compares the complexity R of the external interference signal with a preset complexity R0, and determines whether to adjust the shielding signal strength according to the comparison result,
if R is less than or equal to R0, the first signal analysis unit judges that the shielding signal strength is adjusted;
if R > R0, the first signal analysis unit decides to adjust the masking signal strength.
Specifically, when the first signal analysis unit determines to adjust the shielding signal strength, the first signal analysis unit calculates a complexity difference Δ R between the complexity R and a preset complexity R0, sets Δ R = R-R0, and selects a corresponding adjustment coefficient according to a comparison result between the complexity difference and the preset complexity difference to adjust the shielding signal strength,
wherein the first shielding unit is provided with a first preset complexity difference delta R1, a second preset complexity difference delta R2, a first intensity adjustment coefficient K1, a second intensity adjustment coefficient K2 and a third intensity adjustment coefficient K3, wherein delta R1 is less than delta R2, K1 is more than 1 and less than K2 and less than K3 is less than 1.2,
when the delta R is less than or equal to the delta R1, the first shielding unit selects a first intensity adjusting coefficient K1 to adjust the shielding signal intensity;
when the delta R is more than or equal to delta R1 and less than or equal to delta R2, the first shielding unit selects a second intensity adjusting coefficient K2 to adjust the shielding signal intensity;
when the delta R is larger than the delta R2, the first shielding unit selects a third intensity adjusting coefficient K3 to adjust the shielding signal intensity;
when the first shielding unit selects the jth intensity adjustment coefficient Kj to adjust the shielding signal intensity, j =1, 2, 3 is set, the first shielding unit sets the adjusted shielding signal intensity as U4, and sets U4= Ue × Kj, where e =1, 2, 3.
In the single-network extender for data transmission according to the embodiment of the present invention, when the first signal analysis unit sends out the shielding signal for a preset time length, it is determined whether the first obtaining unit still obtains the external interference signal, and when the external interference signal is obtained, the external interference signal is analyzed, and according to a comparison result between the interference rate P and the preset interference rate P0, it is determined whether to transmit the signal to the signal sending end,
if P is less than P0, the first signal analysis unit judges that the transmission signal is transmitted to a signal transmitting terminal;
and if the P is more than or equal to P0, the first signal analysis unit judges that no signal is transmitted to the signal sending end.
In the single-network extender for data transmission according to the embodiment of the present invention, when the signal transmitting end receives the transmission signal from the signal receiving end, the third obtaining unit obtains the analysis result of the signal receiving end and the transmission signal received by the signal receiving end, the second signal analyzing unit compares whether there is signal attenuation in the transmission signal, and if there is signal attenuation, the signal attenuation rate Z is determined.
In the data transmission single-cable extender according to the embodiment of the present invention, the second signal analysis unit determines whether there is an external interference signal and an interference rate P of the external interference signal when receiving the transmission signal, the second shielding unit determines the shielding signal strength of the second interference signal shielding antenna according to a comparison result between the interference rate P and a preset interference rate, the second signal analysis unit determines whether to correct the shielding signal strength according to a comparison result between the signal attenuation rate Z and a preset signal attenuation rate Z0 when the second shielding unit determines that the shielding signal strength is completed,
if Z > Z0, the second signal analysis unit judges that the shielding signal strength of the second interference signal shielding antenna is corrected;
and if Z is less than or equal to Z0, the second signal analysis unit judges that the shielding signal strength of the second interference signal shielding antenna is not corrected.
Specifically, when the second signal analyzing unit determines to correct the shield signal intensity of the second interfering signal shielding antenna, the second signal analyzing unit calculates an attenuation rate difference Δ Z between the attenuation rate and a preset attenuation rate, and sets Δ Z = Z-Z0, the second shielding unit selects a corresponding correction coefficient from a comparison result of the attenuation rate difference and the preset attenuation rate difference to correct the shield signal intensity,
wherein the second shielding unit is provided with a first preset attenuation rate difference delta Z1, a second preset attenuation rate difference delta Z2, a first intensity correction coefficient X1, a second intensity correction coefficient X2 and a third intensity correction coefficient X3, wherein delta Z1 is less than delta Z2, 1 is more than X1 and more than X2 and more than X3 and less than 1.2,
when the delta Z is less than or equal to the delta Z1, the second shielding unit selects a first intensity correction coefficient X1 to correct the shielding signal intensity;
when the delta Z is more than or equal to delta Z1 and less than or equal to delta Z2, the second shielding unit selects a second intensity correction coefficient X2 to correct the shielding signal intensity;
when the delta Z is larger than the delta Z1, the second shielding unit selects a third intensity correction coefficient X3 to correct the shielding signal intensity;
when the second shielding unit selects an s-th intensity correction coefficient Xs to correct the shielding signal intensity, s =1, 2, 3 is set, and the second shielding unit sets the corrected shielding signal intensity as U5, which is set as U5= Ue × Xs.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a single network cable extender of data transmission, includes signal receiving terminal and signal sending end, its characterized in that still includes:
the first interference signal receiving antenna is arranged on an outer shell of the signal receiving end and connected with a first processing module in the signal receiving end, and the first interference signal receiving antenna is used for detecting an external interference signal of the signal receiving end;
the second interference signal receiving antenna is arranged on the outer shell of the signal sending end and connected with a second processing module in the signal sending end, and the second interference signal receiving antenna is used for detecting an external interference signal of the signal sending end;
the first interference signal shielding antenna is arranged on an outer shell of the signal receiving end and connected with a first processing module in the signal receiving end, and is used for shielding an external interference signal of the signal receiving end;
the second interference signal shielding antenna is arranged on an external shell of the signal sending end and connected with a second processing module in the signal sending end, and the second interference signal shielding antenna is used for shielding an external interference signal of the signal sending end;
the first processing module comprises a first acquisition unit for acquiring the transmission signal received by the signal receiving terminal, a second acquisition unit for acquiring the external interference signal, a first signal analysis unit for analyzing and determining whether the external interference signal interferes with the transmission signal, and a first shielding unit for determining a shielding signal parameter according to an analysis result of the first signal analysis unit;
the second processing module comprises a third acquisition unit for acquiring the analysis result of the signal receiving end, a fourth acquisition unit for acquiring the external interference signal of the signal sending end, a second signal analysis unit for analyzing and determining whether the external interference signal of the signal receiving end interferes with the transmission signal, and a second shielding unit for determining the shielding signal parameter according to the analysis result of the second signal analysis unit.
2. The single-cable extender of data transmission according to claim 1, wherein the first signal analyzing unit determines an interference rate P of the external interference signal with respect to the transmission signal according to a signal parameter of the external interference signal when the transmission signal acquired by the first acquiring unit and the external interference signal acquired by the second acquiring unit are completed, and sets P = (W/Wc) × (λ/λ c) × (F/Fc) × γ, where W is a transmission rate of the external interference signal, Wc is a transmission rate of the transmission signal, α is an interference coefficient corresponding to the transmission rate, λ is a wavelength of the external interference signal, λ c is a wavelength of the transmission signal, β is an interference coefficient corresponding to the wavelength, F is an amplitude of the external interference signal, Fc is an amplitude of the transmission signal, and γ is an interference coefficient corresponding to the amplitude.
3. The single-cable extender of data transmission according to claim 2, wherein when the first signal analyzing unit determines that the interference rate of the external interference signal to the transmission signal is completed, the first shielding unit determines the shielding signal strength of the first interference signal shielding antenna according to the comparison result between the interference rate and a preset interference rate,
wherein, the first shielding unit is provided with a first preset interference ratio P1, a second preset interference ratio P2, a first shielding signal strength U1, a second shielding signal strength U2 and a third shielding signal strength U3, wherein P1 is less than P2, U1 is less than U2 and less than U3,
when P ≦ P1, the first shielding unit sets the shielding signal strength to U1;
when P1 < P ≦ P2, the first shielding unit sets the shielding signal strength to U2;
when P > P2, the first shielding unit sets the shielding signal strength to U3.
4. The single-cable extender for data transmission according to claim 3, wherein the first signal analyzing unit determines the type of the external interference signal according to the analysis result when analyzing the external interference signal, and calculates the complexity R of the external interference signal according to the interference ratio of the external interference signal corresponding to the external interference signal under the corresponding type, where R = Ug1 xfi + Ug2 xfi + … + Ugn xfi, where Ug1 is the strength of the first type of external interference signal, Ug2 is the strength of the second type of external interference signal, Ugn is the strength of the nth type of external interference signal, fi is the complexity coefficient corresponding to the strength of the corresponding type of external interference signal, and i =1, 2, 3 is set.
5. The single-cable extender of claim 4, wherein the first signal analysis unit determines a complexity coefficient corresponding to the strength of the external interference signal according to a comparison result between the strength Ug of the external interference signal and a predetermined signal strength when calculating the complexity of the external interference signal,
wherein the first signal analysis unit is provided with a first preset signal strength Uy1, a second preset signal strength Uy2, a first complexity coefficient f1, a second complexity coefficient f2 and a third complexity coefficient f3, wherein Uy1 < Uy2, f1 < f2 < f3,
when Ug is less than or equal to Uy1, the first signal analysis unit sets the complexity coefficient corresponding to the external interference signal strength as f 1;
when Uy1 is more than Ug and less than or equal to Uy2, the first signal analysis unit sets the complexity coefficient corresponding to the external interference signal strength as f 2;
when Ug > Uy2, the first signal analysis unit sets a complexity coefficient corresponding to the external interference signal strength to f 3.
6. The single-cable extender of claim 5, wherein the first signal analysis unit compares the complexity R of the external interference signal with a predetermined complexity R0 when calculating the complexity of the external interference signal, and determines whether to adjust the shielding signal strength according to the comparison result,
if R is less than or equal to R0, the first signal analysis unit judges that the shielding signal strength is adjusted;
if R > R0, the first signal analysis unit decides to adjust the masking signal strength.
7. The single-cable extender of data transmission according to claim 6, wherein the first signal analyzing unit calculates a complexity difference Δ R between the complexity R and a preset complexity R0 when determining to adjust the shielding signal strength, and sets Δ R = R-R0, the first shielding unit selects a corresponding adjusting coefficient according to a comparison result between the complexity difference and the preset complexity difference to adjust the shielding signal strength, the first shielding unit sets the adjusted shielding signal strength as U4, and sets U4= Ue × Kj, where Kj is an adjusting coefficient, e =1, 2, 3.
8. The single-cable extender for data transmission according to claim 7, wherein the first signal analyzing unit determines whether the first obtaining unit still obtains the external interference signal when sending the shielding signal for a preset time, analyzes the external interference signal when obtaining the external interference signal, determines whether to transmit the signal to the signal sending end according to the comparison result between the interference rate P and a preset interference rate P0,
if P is less than P0, the first signal analysis unit judges that the transmission signal is transmitted to a signal transmitting terminal;
and if P is more than or equal to P0, the first signal analysis unit judges that no signal is transmitted to the signal sending end.
9. The single-cable extender for data transmission according to claim 8, wherein when the signal transmitting end receives the transmission signal from the signal receiving end, the third obtaining unit obtains the analysis result of the signal receiving end and the transmission signal received by the signal receiving end, the second signal analyzing unit compares whether there is signal attenuation in the transmission signal, and if there is signal attenuation, determines a signal attenuation rate Z;
the second signal analysis unit determines whether an external interference signal and an interference rate P of the external interference signal exist or not when receiving the transmission signal, the second shielding unit determines the shielding signal strength of the second interference signal shielding antenna according to a comparison result of the interference rate P and a preset interference rate, the second signal analysis unit determines whether the shielding signal strength is corrected or not according to a comparison result of the signal attenuation rate Z and a preset signal attenuation rate Z0 when the second shielding unit determines that the shielding signal strength is finished,
if Z > Z0, the second signal analysis unit judges that the shielding signal strength of the second interference signal shielding antenna is corrected;
and if Z is less than or equal to Z0, the second signal analysis unit judges that the shielding signal strength of the second interference signal shielding antenna is not corrected.
10. The single-cable extender of claim 9, wherein the second signal analyzing unit calculates an attenuation difference Δ Z between the attenuation ratio and a predetermined attenuation ratio when determining to modify the shielding signal strength of the second interfering signal shielding antenna, and sets Δ Z = Z-Z0, the second shielding unit selects a corresponding modification coefficient according to a comparison result between the attenuation difference and the predetermined attenuation difference to modify the shielding signal strength, and the second shielding unit sets the modified shielding signal strength to U5, and sets U5= Ue × Xs, and Xs is an intensity modification coefficient.
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Address after: 301, Building 2, No. 3 Tianqian Road, Xinhe Community, Fucheng Street, Longhua District, Shenzhen City, Guangdong Province 518000 Patentee after: Shenzhen Pinwei Technology Co.,Ltd. Country or region after: China Address before: Room 601, No. 21, Tianxi Road, Xikeng Community, Fucheng Street, Longhua District, Shenzhen, Guangdong 518000 Patentee before: Shenzhen Pinwei Technology Co.,Ltd. Country or region before: China |