CN108058721B - A kind of rail fastener loose condition detection method and system - Google Patents
A kind of rail fastener loose condition detection method and system Download PDFInfo
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- CN108058721B CN108058721B CN201810078413.XA CN201810078413A CN108058721B CN 108058721 B CN108058721 B CN 108058721B CN 201810078413 A CN201810078413 A CN 201810078413A CN 108058721 B CN108058721 B CN 108058721B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
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Abstract
The embodiment of the present invention provides a kind of rail fastener loose condition detection method and system, which comprises obtains the three-dimensional spectrogram of rail；According to the fisrt feature frequency range in the three-dimensional spectrogram, the type of the corresponding fastener of the fisrt feature frequency range is identified；According to the type of the fastener, obtains the corresponding second feature frequency range of the fastener and loosen threshold value；Amplitude to the fastener in the corresponding power spectral density of second feature frequency range carries out weighted, obtains the weighted amplitude of the fastener；If judgement is known, the weighted amplitude of the fastener loosens threshold value greater than described, then the fastener is got loose, and the efficiency and accuracy detected to rail fastener loose state can be improved in this method and system.
Description
Technical field
The present embodiments relate to rail safety technical field more particularly to a kind of rail fastener loose condition detection methods
And system.
Background technique
During train is run at high speed, the violent vibration of rail easily causes fastener bolt looseness or spring fatigue occur
Phenomenon of rupture, and loosening for fastener often induces loosening for periphery fastener, aggravates track dynamic injustice compliance, Jin Erzao
At serious train derailing hidden danger.
Up to now, either external or domestic, in order to take precautions against since harm caused by loosening, phase occur for rail fastening
The precautionary measures of pass still fully rely on whether the fastener detected on track of manually inspecting the road loosens, and carry out to rail fastening
It is periodically complete tight.
It manually inspects the road and is easy to appear detection leakage phenomenon, and efficiency is lower, therefore, how to provide a kind of automatic, efficient and quasi-
True rail fastener loose condition detection method, the problem of becoming urgent need to resolve.
Summary of the invention
Aiming at the problems existing in the prior art, the embodiment of the present invention provides a kind of rail fastener loose condition detection method
And system.
In a first aspect, the embodiment of the present invention provides a kind of rail fastener loose condition detection method, which comprises
Obtain the three-dimensional spectrogram of rail；
According to the fisrt feature frequency range in the three-dimensional spectrogram, the corresponding fastener of the fisrt feature frequency range is identified
Type；
According to the type of the fastener, obtains the corresponding second feature frequency range of the fastener and loosen threshold value；
Amplitude to the fastener in the corresponding power spectral density of second feature frequency range carries out weighted, obtains the fastener
Weighted amplitude；
If judgement is known, the weighted amplitude of the fastener loosens threshold value greater than described, then the fastener is got loose.
Second aspect, the embodiment of the present invention provide a kind of rail fastener loose condition detecting system, the system comprises:
Module is obtained, for obtaining the three-dimensional spectrogram of rail；
Type identification module, for identifying that described first is special according to the fisrt feature frequency range in the three-dimensional spectrogram
Levy the type of the corresponding fastener of frequency range；
Threshold value obtains module, for the type according to the fastener, obtain the corresponding second feature frequency range of the fastener and
Loosen threshold value；
Weighted module carries out weighted for the amplitude to the fastener in the corresponding power spectral density of second feature frequency range,
Obtain the weighted amplitude of the fastener；
Judgment module, if the weighted amplitude of the fastener loosens threshold value greater than described, then the fastener for judging to know
It gets loose.
The third aspect, the embodiment of the present invention provide a kind of electronic equipment, and the equipment includes memory and processor, described
Processor and the memory complete mutual communication by bus；The memory, which is stored with, to be executed by the processor
Program instruction, the processor calls described program instruction to be able to carry out above-mentioned rail fastener loose condition detection method.
Fourth aspect, the embodiment of the present invention provide a kind of computer readable storage medium, are stored thereon with computer program,
The computer program realizes above-mentioned rail fastener loose condition detection method when being executed by processor.
Rail fastener loose condition detection method provided in an embodiment of the present invention and system, by the three-dimensional frequency for obtaining rail
Spectrogram identifies the type of the corresponding fastener of fisrt feature frequency range, according to button according to the fisrt feature frequency range in three-dimensional spectrogram
The type of part obtains the corresponding second feature frequency range of fastener and loosens threshold value, and contacting piece is in the corresponding power of second feature frequency range
The amplitude of spectrum density carries out weighted, obtains the weighted amplitude of fastener, if judgement is known, the weighted amplitude of fastener, which is greater than, loosens threshold
Value, then fastener is got loose.This method and system by according to the amplitude of the power spectral density at one or more frequency bands plus
Power can be constantly used to avoid with rail and fastener as a result, judge fastener loosens state, characteristic frequency shift and
Caused erroneous judgement, and the selection of sensor is required to reduce, there is robustness, improve and rail fastener loose state is carried out
The efficiency and accuracy of detection.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is rail fastener loose condition detection method flow chart provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of rail fastener loose condition detecting system provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Fig. 1 is rail fastener loose condition detection method flow chart provided in an embodiment of the present invention, as shown in Figure 1, described
Method includes:
Step 10, the three-dimensional spectrogram for obtaining rail；
Step 11, according to the fisrt feature frequency range in the three-dimensional spectrogram, identify that the fisrt feature frequency range is corresponding
Fastener type；
Step 12, according to the type of the fastener, obtain the corresponding second feature frequency range of the fastener and loosen threshold value；
Step 13, the amplitude to the fastener in the corresponding power spectral density of second feature frequency range carry out weighted, obtain institute
State the weighted amplitude of fastener；
If step 14, judgement are known, the weighted amplitude of the fastener loosens threshold value greater than described, then pine occurs for the fastener
It is de-.
Specifically, the three-dimensional spectrogram of the available rail to be detected of system, the three-dimensional spectrogram can reflect out to be checked
The frequency distribution of rail at different locations is surveyed, and the power spectral density distribution at different frequency.
Rail traffic is to comprehensively consider economy and vibration environment pollution problem, is buckled on rail using a plurality of types of
Part, for different types of fastener, rigidity and damping are completely different, thus the rail of different types of fastener position
Three-dimensional spectrogram be different.Wherein, each type of fastener is all corresponding with a characteristic spectra.System can be from getting
Three-dimensional spectrogram in, different characteristic spectras is identified, for example, the characteristic spectra that system can will identify that is denoted as
One characteristic spectra, wherein fisrt feature frequency range may include multiple characteristic frequencies, also may include multiple frequency bands, and system can
To identify the type of corresponding fastener according to the fisrt feature frequency range.
For different types of fastener, since its rigidity and damping are completely different, different types of fastener is occurring
Corresponding characteristic spectra is different after loosening, and system can obtain the fastener corresponding the according to the type of the fastener identified
Two characteristic spectras and loosen threshold value, wherein second feature frequency range may include multiple characteristic frequencies, also may include multiple frequencies
Band using characteristic spectra rather than uses single feature frequency, is since as rail is constantly used with fastener, feature is frequently
Rate shifts, if also loosening state using the calculating of single feature frequency, it may appear that erroneous judgement.
Then, system can obtain the fastener in the corresponding function of second feature frequency range from the three-dimensional spectrogram got
Rate spectrum density carries out weighted to the amplitude of the power spectral density at each of second feature frequency range characteristic frequency, can obtain
To the weighted amplitude of the fastener.Then, obtained weighted amplitude can be compared by system with the threshold value that loosens of the fastener, such as
Fruit knows that the weighted amplitude of the fastener, which is greater than, loosens threshold value through comparing, then illustrates that the fastener is loosened.If the fastener
Weighted amplitude be less than or equal to loosen threshold value, then illustrate that there is no loosening for the fastener.
Rail fastener loose condition detection method provided in an embodiment of the present invention, may be implemented the pine to Mr. Yu's particular fastener
De- state is detected, and by the weighted results of the amplitude to the power spectral density at characteristic spectra, judge fastener loosens shape
State can constantly be used to avoid with rail and fastener, and characteristic frequency is judged by accident caused by shifting, and this method pair
The selection of sensor requires to reduce, and has robustness, improves the efficiency detected to rail fastener loose state and accurate
Degree.
Optionally, on the basis of the above embodiments, the three-dimensional spectrogram for obtaining rail, comprising:
Acquire the vibration signal of the rail；
Time frequency analysis is carried out to the vibration signal of the rail, obtains the three-dimensional spectrogram of the rail.
Specifically, the acquisition process of three-dimensional spectrogram described in above-described embodiment is as follows.
System can acquire the vibration signal of rail at different locations in real time, then, to collected vibration signal into
Row time frequency analysis obtains the frequency distribution of rail at different locations, and the power spectral density distribution at different frequency, i.e.,
Obtain the three-dimensional spectrogram.
Before carrying out time frequency analysis to collected vibration signal, system can also carry out the vibration signal of the rail
Filtering processing and data smoothing processing, remove the noise in the vibration signal, therefrom extract effective rail vibration signal, can
To improve the accuracy that contacting piece loosens state-detection, so that the method is more scientific.
Optionally, on the basis of the above embodiments, the fisrt feature frequency range according in the three-dimensional spectrogram, knows
Not Chu the corresponding fastener of the fisrt feature frequency range type, comprising:
Obtain fastener type identification property data base；
If the feature of the first fastener type in the fisrt feature frequency range and the fastener type identification property data base
Frequency range matches, then using the first fastener type as the type of the fastener.
Specifically, system is identified that detailed process is as follows according to the three-dimensional spectrogram of rail, the type of contacting piece.
Firstly, the available fastener type identification property data base of system, different fastener types are preserved in the database
Corresponding characteristic spectra can identify corresponding fastener type according to some characteristic spectra.Different fastener types, it is corresponding
Characteristic spectra it is different.
Then, system can identify one or more features frequency range from the three-dimensional spectrogram of rail, for example, can incite somebody to action
The characteristic spectra identified is denoted as fisrt feature frequency range, if the fisrt feature frequency range and fastener type identification characteristic
The characteristic spectra of some fastener type in library matches, for example, matching with the characteristic spectra of the first fastener type, then should
Type of the first fastener type as the fastener.
Rail fastener loose condition detection method provided in an embodiment of the present invention, by obtaining fastener type identification characteristic
According to library, if fisrt feature frequency range and the characteristic spectra of the first fastener type in fastener type identification property data base match,
Then using the first fastener type as the type of fastener, so that the method is more scientific.
Optionally, on the basis of the above embodiments, the type according to the fastener, it is corresponding to obtain the fastener
Second feature frequency range and loosen threshold value, comprising:
It obtains fastener and loosens identification feature database；
If the type of the fastener and the fastener loosen the corresponding class of the second feature frequency range in identification feature database
Type matches, then obtains the second feature frequency range and the second feature frequency range is corresponding loosens threshold value.
Specifically, system obtains the corresponding second feature frequency range of fastener and loosens the process of threshold value according to the type of fastener,
It is specific as follows.
Firstly, the available fastener of system loosens identification feature database, different fastener types are preserved in the database
Corresponding characteristic spectra and threshold value is loosened, according to the available corresponding characteristic spectra of some fastener type and loosens threshold
Value.Different fastener types, corresponding characteristic spectra are different with threshold value is loosened.
Then, the type of the fastener and fastener can be loosened the progress of the fastener type in identification feature database by system
Match, for example, the type of the fastener can be denoted as type A, if it is A that fastener, which loosens the fastener type in identification feature database,
When, corresponding characteristic spectra is second feature frequency range, and the corresponding threshold value that loosens is T, then the available second feature frequency of system
The section and second feature frequency range is corresponding loosens threshold value T.
Rail fastener loose condition detection method provided in an embodiment of the present invention loosens identification feature number by obtaining fastener
According to library, if the type of fastener and fastener loosen the second feature frequency range in identification feature database, corresponding type matches,
It obtains second feature frequency range and second feature frequency range is corresponding loosens threshold value, so that the method is more scientific.
Optionally, on the basis of the above embodiments, the method also includes:
If judgement knows that the fastener is got loose, alert.
Specifically, system is detected according to the state that loosens of method contacting piece described in above-described embodiment, if through
Detection knows that some fastener is got loose, then system can be with alert, for example, sound-light alarm can be issued.In addition,
The result that contacting piece can also loosen state-detection by system carries out record preservation, and acording to the requirement of user, generates phase
The report of format is answered, for user query, this makes the method more scientific.
Fig. 2 is the structural schematic diagram of rail fastener loose condition detecting system provided in an embodiment of the present invention, such as Fig. 2 institute
Show, the system comprises: it obtains module 20, type identification module 21, threshold value and obtains module 22, weighted module 23 and judgment module
24, in which:
Obtain the three-dimensional spectrogram that module 20 is used to obtain rail；Type identification module 21 is used for according to the three-dimensional frequency spectrum
Fisrt feature frequency range in figure identifies the type of the corresponding fastener of the fisrt feature frequency range；Threshold value obtains module 22 and is used for
According to the type of the fastener, obtains the corresponding second feature frequency range of the fastener and loosen threshold value；Weighted module 23 for pair
The fastener carries out weighted in the amplitude of the corresponding power spectral density of second feature frequency range, obtains the weighted amplitude of the fastener；
If judgment module 24 is known for judging, the weighted amplitude of the fastener loosens threshold value greater than described, then pine occurs for the fastener
It is de-.
Specifically, rail fastener loose condition detecting system provided in an embodiment of the present invention may include: acquisition module
20, type identification module 21, threshold value obtain module 22, weighted module 23 and judgment module 24.
The three-dimensional spectrogram of the available rail to be detected of module 20 is obtained, which can reflect out to be detected
The frequency distribution of rail at different locations, and the power spectral density distribution at different frequency.
Rail traffic is to comprehensively consider economy and vibration environment pollution problem, is buckled on rail using a plurality of types of
Part, for different types of fastener, rigidity and damping are completely different, thus the rail of different types of fastener position
Three-dimensional spectrogram be different, wherein each type of fastener is all corresponding with a characteristic spectra.Type identification module 21 can
To identify different characteristic spectras from the three-dimensional spectrogram got, for example, type identification module 21 can will identify that
A characteristic spectra be denoted as fisrt feature frequency range, wherein fisrt feature frequency range may include multiple characteristic frequencies, also can wrap
Multiple frequency bands are included, type identification module 21 can identify the type of corresponding fastener according to the fisrt feature frequency range.
For different types of fastener, since its rigidity and damping are completely different, different types of fastener is occurring
Corresponding characteristic spectra is different after loosening, and threshold value obtains module 22 can be according to the fastener that type identification module 21 identifies
Type obtains the corresponding second feature frequency range of the fastener and loosens threshold value, wherein second feature frequency range may include multiple features
Frequency also may include multiple frequency bands, using characteristic spectra rather than uses single characteristic frequency, is due to rail
It is constantly used with fastener, characteristic frequency shifts, if also loosening state using the calculating of single feature frequency will appear
Erroneous judgement.
Weighted module 23 can obtain the fastener in the corresponding function of second feature frequency range from the three-dimensional spectrogram got
Rate spectrum density carries out weighted to the amplitude of the power spectral density at each of second feature frequency range characteristic frequency, can obtain
To the weighted amplitude of the fastener.Obtained weighted amplitude can be compared by judgment module 24 with the threshold value that loosens of the fastener,
If known through comparing, the weighted amplitude of the fastener, which is greater than, loosens threshold value, then illustrates that the fastener is loosened.If the button
The weighted amplitude of part, which is less than or equal to, loosens threshold value, then illustrates that there is no loosening for the fastener.
Rail fastener loose condition detecting system provided in an embodiment of the present invention, function are implemented referring in particular to the above method
Example, details are not described herein again.
In addition, rail fastener loose condition detecting system provided in an embodiment of the present invention can also include: display module,
In, the spatial position for each fastener that the display module can be identified with real-time display and the spatial position for loosening fastener, institute
Stating display module can also include " checking historical data " sub-interface, " analysis of history data " sub-interface and " TDMS- > TXT " number
According to conversion sub-interface, these three sub-interfaces can carry out data backtracking, data analysis and the conversion of data format.
Rail fastener loose condition detecting system provided in an embodiment of the present invention, may be implemented the pine to Mr. Yu's particular fastener
De- state is analyzed, and according to the weighted results of the amplitude to the power spectral density at one or more frequency bands, judges fastener
State is loosened, can constantly be used to avoid with rail and fastener, characteristic frequency is judged by accident caused by shifting, and should
System requires to reduce to the selection of sensor, has robustness, improves the efficiency detected to rail fastener loose state
And accuracy.
Optionally, on the basis of the above embodiments, the acquisition module includes: to acquire submodule and analysis submodule,
Wherein:
Acquisition submodule is used to acquire the vibration signal of the rail；The vibration that submodule is used for the rail is analyzed to believe
Number carry out time frequency analysis, obtain the three-dimensional spectrogram of the rail.
Specifically, acquisition module described in above-described embodiment may include: acquisition submodule and analysis submodule.
Acquisition submodule can acquire the vibration signal of rail at different locations in real time, and analysis submodule can be to acquisition
The collected vibration signal of submodule carries out time frequency analysis, obtains the frequency distribution of rail at different locations, and in difference
Power spectral density at frequency is distributed to arrive the three-dimensional spectrogram.
Wherein, before carrying out time frequency analysis to collected vibration signal, analysis submodule can also be to the rail
Vibration signal is filtered and data smoothing processing, removes the noise in the vibration signal, therefrom extracts effective steel
The accuracy that contacting piece loosens state-detection can be improved in rail vibration signal, so that the system is more scientific.
Optionally, on the basis of the above embodiments, the type identification module includes: acquisition submodule and matching submodule
Block, in which:
Acquisition submodule is for obtaining fastener type identification property data base；If matched sub-block is used for the fisrt feature
The characteristic spectra of frequency range and the first fastener type in the fastener type identification property data base matches, then by described first
Type of the fastener type as the fastener.
Specifically, type identification module described in above-described embodiment may include: acquisition submodule and matching submodule
Block.
Acquisition submodule available fastener type identification property data base preserves different fastener types in the database
Corresponding characteristic spectra can identify corresponding fastener type according to some characteristic spectra.Different fastener types, it is corresponding
Characteristic spectra it is different.
Matched sub-block can identify one or more features frequency range from the three-dimensional spectrogram of rail, for example, can be with
The characteristic spectra that will identify that is denoted as fisrt feature frequency range, if the fisrt feature frequency range and fastener type identification characteristic
Characteristic spectra according to some fastener type in library matches, for example, matching with the characteristic spectra of the first fastener type, then will
The type of the first fastener type as the fastener.
Rail fastener loose condition detecting system provided in an embodiment of the present invention, by obtaining fastener type identification characteristic
According to library, if fisrt feature frequency range and the characteristic spectra of the first fastener type in fastener type identification property data base match,
Then using the first fastener type as the type of fastener, so that the system is more scientific.
Fig. 3 is the structural schematic diagram of electronic equipment provided in an embodiment of the present invention, as shown in figure 3, the equipment includes: place
Manage device (processor) 31, memory (memory) 32 and bus 33, in which:
The processor 31 and the memory 32 complete mutual communication by the bus 33；The processor 31
For calling the program instruction in the memory 32, to execute method provided by above-mentioned each method embodiment, for example,
Obtain the three-dimensional spectrogram of rail；According to the fisrt feature frequency range in the three-dimensional spectrogram, the fisrt feature frequency is identified
The type of the corresponding fastener of section；According to the type of the fastener, obtains the corresponding second feature frequency range of the fastener and loosen threshold
Value；Amplitude to the fastener in the corresponding power spectral density of second feature frequency range carries out weighted, obtains the weighted of the fastener
Amplitude；If judgement is known, the weighted amplitude of the fastener loosens threshold value greater than described, then the fastener is got loose.
The embodiment of the present invention discloses a kind of computer program product, and the computer program product is non-transient including being stored in
Computer program on computer readable storage medium, the computer program include program instruction, when described program instructs quilt
When computer executes, computer is able to carry out method provided by above-mentioned each method embodiment, for example, obtains the three of rail
Tie up spectrogram；According to the fisrt feature frequency range in the three-dimensional spectrogram, the corresponding fastener of the fisrt feature frequency range is identified
Type；According to the type of the fastener, obtains the corresponding second feature frequency range of the fastener and loosen threshold value；To the fastener
Weighted is carried out in the amplitude of the corresponding power spectral density of second feature frequency range, obtains the weighted amplitude of the fastener；If judgement obtains
Know, the weighted amplitude of the fastener loosens threshold value greater than described, then the fastener is got loose.
The embodiment of the present invention provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage
Medium storing computer instruction, the computer instruction make the computer execute side provided by above-mentioned each method embodiment
Method, for example, obtain the three-dimensional spectrogram of rail；According to the fisrt feature frequency range in the three-dimensional spectrogram, institute is identified
State the type of the corresponding fastener of fisrt feature frequency range；According to the type of the fastener, the corresponding second feature of the fastener is obtained
Frequency range and loosen threshold value；Amplitude to the fastener in the corresponding power spectral density of second feature frequency range carries out weighted, obtains institute
State the weighted amplitude of fastener；If judgement is known, the weighted amplitude of the fastener loosens threshold value greater than described, then the fastener occurs
It loosens.
The embodiments such as electronic equipment described above are only schematical, wherein it is described as illustrated by the separation member
Unit may or may not be physically separated, and component shown as a unit may or may not be object
Manage unit, it can it is in one place, or may be distributed over multiple network units.It can select according to the actual needs
Some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying wound
In the case where the labour for the property made, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the embodiment of the present invention, rather than it is right
It is limited；Although the embodiment of the present invention is described in detail referring to foregoing embodiments, the ordinary skill of this field
Personnel are it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, or to part
Or all technical features are equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution
The range of each embodiment technical solution of the embodiment of the present invention.
Claims (8)
1. a kind of rail fastener loose condition detection method characterized by comprising
Obtain the three-dimensional spectrogram of rail；
According to the fisrt feature frequency range in the three-dimensional spectrogram, the class of the corresponding fastener of the fisrt feature frequency range is identified
Type；
According to the type of the fastener, obtains the corresponding second feature frequency range of the fastener and loosen threshold value；
Amplitude to the fastener in the corresponding power spectral density of second feature frequency range carries out weighted, obtains the weighted of the fastener
Amplitude；
If judgement is known, the weighted amplitude of the fastener loosens threshold value greater than described, then the fastener is got loose；
Wherein, the fisrt feature frequency range according in the three-dimensional spectrogram, identifies that the fisrt feature frequency range is corresponding
The type of fastener, comprising:
Obtain fastener type identification property data base；
If the characteristic spectra of the first fastener type in the fisrt feature frequency range and the fastener type identification property data base
Match, then using the first fastener type as the type of the fastener.
2. the method according to claim 1, wherein the three-dimensional spectrogram for obtaining rail, comprising:
Acquire the vibration signal of the rail；
Time frequency analysis is carried out to the vibration signal of the rail, obtains the three-dimensional spectrogram of the rail.
3. the method according to claim 1, wherein the type according to the fastener, obtains the fastener
Corresponding second feature frequency range and loosen threshold value, comprising:
It obtains fastener and loosens identification feature database；
If the type of the fastener and the fastener loosen the corresponding type phase of the second feature frequency range in identification feature database
Matching then obtains the second feature frequency range and the second feature frequency range is corresponding loosens threshold value.
4. the method according to claim 1, wherein further include:
If judgement knows that the fastener is got loose, alert.
5. a kind of rail fastener loose condition detecting system characterized by comprising
Module is obtained, for obtaining the three-dimensional spectrogram of rail；
Type identification module, for identifying the fisrt feature frequency according to the fisrt feature frequency range in the three-dimensional spectrogram
The type of the corresponding fastener of section；
Threshold value obtains module, for the type according to the fastener, obtains the corresponding second feature frequency range of the fastener and loosens
Threshold value；
Weighted module carries out weighted for the amplitude to the fastener in the corresponding power spectral density of second feature frequency range, obtains
The weighted amplitude of the fastener；
Judgment module, if the weighted amplitude of the fastener loosens threshold value greater than described, then the fastener occurs for judging to know
It loosens；
Wherein, the type identification module includes:
Acquisition submodule, for obtaining fastener type identification property data base；
Matched sub-block, if for the first fastener in the fisrt feature frequency range and the fastener type identification property data base
The characteristic spectra of type matches, then using the first fastener type as the type of the fastener.
6. system according to claim 5, which is characterized in that the acquisition module includes:
Submodule is acquired, for acquiring the vibration signal of the rail；
Submodule is analyzed, time frequency analysis is carried out for the vibration signal to the rail, obtains the three-dimensional spectrogram of the rail.
7. a kind of electronic equipment, which is characterized in that including memory and processor, the processor and the memory pass through always
Line completes mutual communication；The memory is stored with the program instruction that can be executed by the processor, the processor tune
The method as described in Claims 1-4 is any is able to carry out with described program instruction.
8. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program is located
Manage the method realized as described in Claims 1-4 is any when device executes.
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