A kind of signal processing method, unit, device and signal transmission systemTechnical field
The present invention relates to signal processing technology fields more particularly to a kind of signal processing method, unit, device and signal to passDefeated system.
Background technology
General electronic component or circuit, if the signal that two frequencies of input are different, can all generate three ranks, five ranks veryTo the inter-modulated signal of higher order, for faulted circuit, the inter-modulated signal meeting bigger generated, therefore, generally use testThe method of inter-modulated signal realizes fault location.
Fig. 1 shows the system for using inter-modulated signal to carry out fault location in the prior art, wherein number subsignal processing dressThe first signal generator set and second signal generator launch the different the first signal and the second signal of frequency range respectively, and firstSignal enters combining filter by the first transmission path, and second signal enters combining filter by the second transmission path, theAfter one signal and second signal are filtered by the combining of combining filter, a main signal is exported, which enters object to be measuredNetwork, one measured signal of object to be measured network reflections, the measured signal enter combining filter, then pass through receiving path and enterSignal processing apparatus.
In the prior art, in order to realize the fault location of target network, the main signal for being combined filter output is coupledDevice couples, and refers to inter-modulated signal using output one after nonlinear circuit, this enters place with reference to inter-modulated signal by reference pathManage device.Processor handles the measured signal reflected with reference to inter-modulated signal and target network, can obtain object to be measuredThe fault message of network.Inventor has found in the implementation of the present invention：It is existing that fault location is carried out using inter-modulated signalSystem in, the generation and transmission circuit of inter-modulated signal increases the area of circuit board, wiring difficulty and cost.
Invention content
The present invention provides a kind of signal processing method, unit, device and signal transmission systems, to solve the prior artThe generation and transmission circuit of middle inter-modulated signal increases the problem of area, wiring difficulty and cost of circuit board, technical solutionIt is as follows：
A kind of signal processing method, including：
It receives the first signal, also, receives second signal, wherein first signal and the second signal are frequency rangeDifferent signals；
By first signal and the second signal synthesized reference inter-modulated signal；
Receive the measured signal of object to be measured network reflections；
Compare reference inter-modulated signal and the measured signal, determines the fault message of the object to be measured network.
Preferably, it is specially by first signal and the second signal synthesized reference inter-modulated signal：
The low-side reference inter-modulated signal of three ranks, five ranks, seven ranks is synthesized by following formula：
Low_im3=f12*f2*
Low_im5=f13*(f22)*
Low_im7=f14*(f23)*
And/or the high-side reference inter-modulated signal of three ranks, five ranks, seven ranks is synthesized by following formula：
High_im3=f22*f1*
High_im5=f23*(f12)*
High_im7=f24*(f13)*
Wherein, the first signal is low-band signal, and sequence f1, second signal is high frequency band signal, sequence f2,f2*The conjugation for indicating f2, correspondingly, (f22)*Indicate f22Conjugation, f23(f23)*Indicate f23Conjugation, f1*Indicate being total to for f1Yoke, correspondingly, (f12)*Indicate f12Conjugation, f13(f13)*Indicate f13Conjugation.
A kind of signal processing unit, including：First receiving module, the second receiving module, third receiving module, synthesis mouldBlock, comparison module and determining module；
First receiving module, for receiving the first signal；
Second receiving module, for receiving second signal, wherein the second signal and the first signal frequency rangeIt is different；
The synthesis module, the first signal and second receiving module for receiving first receiving module connectThe second signal synthesized reference inter-modulated signal of receipts；
The third receiving module, the measured signal for receiving object to be measured network reflections；
The comparison module refers to inter-modulated signal and the measured signal for more described；
The determining module, the failure for determining the object to be measured network according to the comparison result of the comparison moduleInformation.
Preferably, the synthesis module includes：First synthesis submodule and/or the second synthesis submodule；
The first synthesis submodule, the first signal and described second for receiving first receiving module receiveThe second signal that module receives synthesizes low-side reference inter-modulated signal；
The second synthesis submodule, the first signal and described second for receiving first receiving module receiveThe second signal that module receives synthesizes high-side reference inter-modulated signal.
A kind of signal processing apparatus, including：First signal generator, second signal generator and processor；
The output end of first signal generator is connect with the first output end of the processor, and the first signal is sentTo the processor；
The output end of the second signal generator is connect with the second output terminal of the processor, and second signal is sentTo the processor；
The processor refers to intermodulation by first signal and the mutual tone mark of second signal synthesized reference, and by describedSignal is compared with the measured signal of the object to be measured network reflections of reception, determines the failure letter of the object to be measured networkBreath.
A kind of signal transmission system, including：Above-mentioned signal processing apparatus further includes：First transmission path, second sendAccess, receiving path and combining filter；
First signal generator of the signal processing apparatus passes through first transmission path and the combining filterFirst input end connection, the first signal is sent to the combining filter by first transmission path；
The second signal generator of the signal processing apparatus passes through second transmission path and the combining filterThe second input terminal connection, second signal is sent to the combining filter by second transmission path；
The combining filter is filtered merging to first signal and the second signal, after filtering is mergedSignal is sent to object to be measured network, also, receives the measured signal of the object to be measured network reflections；
Signal processing apparatus is also connect by the receiving path with the combining filter, is connect by the receiving pathFold path filter transmission measured signal, the measured signal and it is described refer to inter-modulated signal, determine the mesh to be measuredMark the fault message of network.
The combining filter includes：First subfilter, the second subfilter, third subfilter and combiner；
First subfilter is filtered first signal of reception, and second subfilter is to receptionThe second signal is filtered, and the combiner filters the filtered signal of first subfilter and second sonThe filtered signal of device merges, and the signal after merging is sent to the object to be measured network, the third filteringDevice is filtered the signal of the object to be measured network reflections, and the filtered signal is sent to the signal processing deviceIt sets.
Using signal processing method provided by the invention, unit, device and signal transmission system, it is no longer necessary to reference to logicalRoad substantially reduces the area of circuit board, saves cost, also, the reference inter-modulated signal locally synthesized is not by environmental changeInfluence, signal stabilization can improve the accuracy of fault location.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show belowThere is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only thisThe embodiment of invention for those of ordinary skill in the art without creative efforts, can also basisThe attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of fault location system in the prior art；
Fig. 2 is the flow diagram for the signal processing method that the embodiment of the present invention one provides；
Fig. 3 is the structural schematic diagram of signal processing unit provided by Embodiment 2 of the present invention；
Fig. 4 is the structural schematic diagram for the signal processing apparatus that the embodiment of the present invention three provides；
Fig. 5 is the structural schematic diagram for the signal transmission system that the embodiment of the present invention four provides.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, completeSite preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based onEmbodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every otherEmbodiment shall fall within the protection scope of the present invention.
Embodiment one
The embodiment of the present invention one provides a kind of signal processing method, and Fig. 2 is the flow diagram of this method, and this method canTo include：
S11：The first signal is received, also, receives second signal, wherein the first signal and the second signal are that frequency range is differentSignal.
S12：By the first signal and the second signal synthesized reference inter-modulated signal.
S13：Receive the measured signal of object to be measured network reflections.
S14：Comparison reference inter-modulated signal and measured signal.
In the present embodiment, measured signal is similarly an inter-modulated signal, if object to be measured network is faulty, reflectionTherefore inter-modulated signal bigger compares the inter-modulated signal of object to be measured network reflections with reference to inter-modulated signal, you can determineFault message.
S15：The fault message of object to be measured network is determined according to comparison result.
In the present embodiment, it is specially by the first signal and the second signal synthesized reference inter-modulated signal：
The low-side reference inter-modulated signal of three ranks, five ranks, seven ranks is synthesized by following formula：
Low_im3=f12*f2*
Low_im5=f13*(f22)*
Low_im7=f14*(f23)*
And/or the high-side reference inter-modulated signal of three ranks, five ranks, seven ranks is synthesized by following formula：
High_im3=f22*f1*
High_im5=f23*(f12)*
High_im7=f24*(f13)*
Wherein, the first signal is low-band signal, and sequence f1, second signal is high frequency band signal, sequence f2,f2*The conjugation for indicating f2, correspondingly, (f22)*Indicate f22Conjugation, (f23)*Indicate f23Conjugation, f1*Indicate the conjugation of f1,Correspondingly, (f12)*Indicate f12Conjugation, (f13)*Indicate f13Conjugation.
In the present embodiment, can only receive the low side inter-modulated signal of measured signal, correspondingly, also only by the first signal andSecond signal synthesizes low-side reference inter-modulated signal, determines that failure is believed by comparing low side inter-modulated signal and low-side reference inter-modulated signalBreath.Certainly, it's not limited to that for the present embodiment, the high-end inter-modulated signal of measured signal also can be only received, correspondingly, also only by theOne signal and second signal synthesize high-side reference inter-modulated signal, true by comparing high-end inter-modulated signal and high-side reference inter-modulated signalDetermine fault message.Alternatively, more high-end inter-modulated signal and high-side reference inter-modulated signal, low side inter-modulated signal and low-side reference simultaneouslyInter-modulated signal determines fault message.
The signal processing method provided using the embodiment of the present invention one, it is no longer necessary to which reference path substantially reduces circuitThe area of plate saves cost, also, the reference inter-modulated signal locally synthesized is not influenced by environmental change, signal stabilization, energyEnough improve the accuracy of fault location.
Embodiment two
Second embodiment of the present invention provides a kind of signal processing unit, Fig. 3 is the structural schematic diagram of the signal processing unit,The signal processing unit includes：First receiving module 11, the second receiving module 12, synthesis module 13, comparison module 14, third connectReceive module 15 and determining module 16.Wherein：
First receiving module 11, for receiving the first signal；Second receiving module 12, for receiving second signal；SynthesisModule 13, the second signal synthesis ginseng that the first signal and the second receiving module 12 for receiving the first receiving module 11 receiveExamine inter-modulated signal；Third receiving module 14, the measured signal for receiving object to be measured network reflections；Comparison module 15, is used forCompare the measured signal of the reference inter-modulated signal and the reception of third receiving module 14 of the synthesis of synthesis module 13；Determining module 15 is usedIn the fault message for determining object to be measured network according to the comparison result of comparison module 15.
Further, synthesis module 13 includes：First synthesis submodule and/or the second synthesis submodule.Wherein：
First synthesis submodule, the first signal and the second receiving module 12 for receiving the first receiving module 11 receiveSecond signal synthesize low-side reference inter-modulated signal；Second synthesis submodule, first for receiving the first receiving module 11The second signal that signal and second receiving module 12 receive synthesizes high-side reference inter-modulated signal.
In the present embodiment, the first synthesis submodule synthesizes the low-side reference intermodulation letter of three ranks, five ranks, seven ranks by following formulaNumber：
Low_im3=f12*f2*
Low_im5=f13*(f22)*
Low_im7=f14*(f23)*
First synthesis submodule synthesizes the high-side reference inter-modulated signal of three ranks, five ranks, seven ranks by following formula：
High_im3=f22*f1*
High_im5=f23*(f12)*
High_im7=f24*(f13)*
Wherein, the first signal is low-band signal, and sequence f1, second signal is high frequency band signal, sequence f2,f2*The conjugation for indicating f2, correspondingly, (f22)*Indicate f22Conjugation, (f23)*Indicate f23Conjugation, f1*Indicate the conjugation of f1,Correspondingly, (f12)*Indicate f12Conjugation, (f13)*Indicate f13Conjugation.
Using signal processing unit provided by Embodiment 2 of the present invention, it is no longer necessary to which reference path substantially reduces circuitThe area of plate saves cost, also, the reference inter-modulated signal locally synthesized is not influenced by environmental change, signal stabilization, energyEnough improve the accuracy of fault location.
Embodiment three
The embodiment of the present invention three provides a kind of signal processing apparatus, and Fig. 4 is the structural schematic diagram of the device, the device packetIt includes：First signal generator 21, second signal generator 22 and processor 23.Wherein：
The output end of first signal generator 21 is connect with the first output end of processor 23, and the first signal is sent to placeManage device 23.
The output end of second signal generator 22 is connect with the second output terminal of processor 23, and second signal is sent to placeManage device 23.
Processor 23 will wait for the mutual tone mark of the first signal and the second signal synthesized reference with reference to inter-modulated signal with what is receivedThe measured signal for surveying target network reflection is compared, and determines the fault message of object to be measured network.
In the present embodiment, processor can synthesize the low-side reference inter-modulated signal of three ranks, five ranks, seven ranks by following formula：
Low_im3=f12*f2*
Low_im5=f13*(f22)*
Low_im7=f14*(f23)*
And/or the high-side reference inter-modulated signal of three ranks, five ranks, seven ranks is synthesized by following formula：
High_im3=f22*f1*
High_im5=f23*(f12)*
High_im7=f24*(f13)*
Wherein, the first signal is low-band signal, and sequence f1, second signal is high frequency band signal, sequence f2,f2*The conjugation for indicating f2, correspondingly, (f22)*Indicate f22Conjugation, (f23)*Indicate f23Conjugation, f1*Indicate the conjugation of f1,Correspondingly, (f12)*Indicate f12Conjugation, (f13)*Indicate f13Conjugation.
The signal processing apparatus that the embodiment of the present invention three provides can be by the first signal generator by its internal processorThe second signal synthesized reference inter-modulated signal that the first signal and the second signal generator of transmission is sent, therefore, it is no longer necessary to speciallyThe reference path of door, substantially reduces the area of circuit board, saves cost, also, the ginseng that signal processing apparatus locally synthesizesExamine intermodulation signal is not influenced by environmental change, signal stabilization, and is conveniently adjusted, and this improves the accuracys of fault location.
Example IV
The embodiment of the present invention four provides a kind of signal transmission system, and Fig. 5 is the structural schematic diagram of the system, which canTo include：Signal processing apparatus, the signal processing apparatus can be the signal processing apparatus that example IV provides, and can also wrapIt includes：First transmission path 24, the second transmission path 25, receiving path 26 and combining filter 27.Wherein：
First signal generator 21 of signal processing apparatus passes through the first transmission path 24 and the first of combining filter 27Input terminal connects, and the first signal is sent to combining filter 27 by the first transmission path 24.
The second signal generator 22 of signal processing apparatus passes through the second transmission path 25 and the second of combining filter 27Input terminal connects, and second signal is sent to combining filter 27 by the second transmission path 25.
Combining filter 27 is filtered merging to the first signal and the second signal, and the signal after filtering is merged is sent toObject to be measured network, also, receive the measured signal of object to be measured network reflections.
The processor 23 of signal processing apparatus is also connect by receiving path 26 with combining filter 27, and receiving path is passed through26 receive the measured signal that combining filter 27 is sent, and compare measured signal and refer to inter-modulated signal, determine object to be measured networkFault message.
Further, combining filter 27 may include：First subfilter, the second subfilter, third subfilterAnd combiner.Wherein：
First subfilter is filtered the first signal of reception, and filter out that the first signal carries in transmission process makes an uproarSound, the second subfilter are filtered the second signal of reception, filter out the noise that second signal carries in transmission process, instituteIt states combiner to merge the filtered signal of the first subfilter and the filtered signal of the second subfilter, and will mergeSignal afterwards is sent to object to be measured network, and the signal that third subfilter reflects target network to be measured is filtered, and willThe processor 23 that the filtered signal is sent to signal processing apparatus carries out subsequent processing.
In the present embodiment, 23 synthesis low-side reference inter-modulated signals of processor, and the low side for only receiving measured signal is mutualSignal is adjusted, compares the low side inter-modulated signal of reception and the low-side reference inter-modulated signal of synthesis, determines the failure of object to be measured networkInformation.Certainly, the present embodiment do not limit and this, processor 23 can only synthesis low-side reference inter-modulated signal, and only receive to be measuredThe high-end inter-modulated signal of signal determines correspondingly, comparing the high-end inter-modulated signal of reception and the high-side reference inter-modulated signal of synthesisThe fault message of object to be measured network.It in addition to this, can also be simultaneously by the low side inter-modulated signal of reception and the low-side reference of synthesisInter-modulated signal compares, and the high-end inter-modulated signal of reception and high-side reference inter-modulated signal are compared, to determine object to be measured netThe fault message of network.
It, can by its internal processor by signal processing apparatus in the signal transmission system that the embodiment of the present invention four providesThe second signal synthesized reference inter-modulated signal that the first signal and the second signal generator that first signal generator is sent is sent,Therefore, it is no longer necessary to which special reference path substantially reduces the area of circuit board, saves cost, also, signal processing deviceSet the reference intermodulation signal locally synthesized is not influenced by environmental change, signal stabilization, and is conveniently adjusted, and this improves eventsHinder the accuracy of positioning.
Each embodiment in this specification is described in a progressive manner, identical similar portion between each embodimentPoint just to refer each other, and each embodiment focuses on the differences from other embodiments.Described above isEmbodiment of uniting is only schematical, wherein the unit illustrated as separating component may or may not be physicsUpper separated, the component shown as unit may or may not be physical unit, you can be located at a place, orPerson may be distributed over multiple network units.Some or all of module therein can be selected according to the actual needs to come in factThe purpose of existing this embodiment scheme.Those of ordinary skill in the art are without creative efforts, you can to understandAnd implement.
It should be noted that herein, relational terms such as first and second and the like are used merely to a realityBody or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operationIn any actual relationship or order or sequence.
The above is only the specific implementation mode of the present invention, it is noted that for the ordinary skill people of the artFor member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answeredIt is considered as protection scope of the present invention.