CN109799449A - A kind of track circuit monitoring data decompression method and processing system based on parameter identification - Google Patents
A kind of track circuit monitoring data decompression method and processing system based on parameter identification Download PDFInfo
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Abstract
The invention discloses a kind of track circuit monitoring data decompression methods based on parameter identification, for memory-type track circuit monitoring data to be unziped it, memory-type railway monitoring data include multiple omission labels and multiple routine data bytes, the decompression method omits number according to the timestamp and data acquisition time interval calculation that omit label front and back, will omit label and is reduced to one or more consecutive restoring data byte；It solves the problems, such as to unzip it the memory-type railway monitoring data of high compression rate, while saving the required room and time expense of decompression；The invention also discloses the track circuit smp data processing systems of the application decompression method.
Description
Technical field
The present invention relates to field of track traffic more particularly to a kind of track circuit monitoring data decompressions based on parameter identification
Contracting method and processing system.
Background technique
It, need to be to railway signals equipments such as track switch, track circuit, semaphore, interlocking, column controls to ensure railway operation safety
State carries out real-time monitoring.With the raising of maintenance of equipment quality requirement, monitoring device type, ginseng is needed to survey sensor and each
The parameter rapid development of class equipment monitoring.One medium station only mechanical indoor signalling arrangement of signal box, what every month generated
Monitoring data are in 10GB between 15GB.To solve the problems, such as that mass data stores, common method is circulation covering, generally only
Retain 30 days or so data.
As railways train operation interval shortens the raising with running speed, the maintenance quality of signalling arrangement is proposed higher
It is required that having stringenter quantizating index on equipment failure rate and equipment fault delay；On method for maintaining, signal is set
The requirement that standby plan and control develops to status maintenance is more urgent.Operation data in acquisition and preservation signalling arrangement Life cycle,
It is the data basis for realizing signalling arrangement status maintenance.The electricity business section at one administration, 200 stations, one month equipment monitoring data
It is up to 2TB to 3TB, 1 year quantity is in 30TB or more.How long-term preservation and efficiently use these mass datas, become
A more and more important project.
Long-term preservation and the premise of effective use are that track circuit monitoring data are carried out with data compression, at traditional data
Data details are omitted in reason method in data compression process, cause the weight of reflection railway signals equipment operating status variation details
It is big to be lost.
In diversified railway signals equipment, track circuit is crucial infrastructure, and the phenomenon of the failure occurred exists
Diversity, therefore, real-time monitoring and the fault distinguishing work of current track circuit data just show particularly important.
Intercepting Beijing-Guangzhou Railway station data collection interval is the track circuit of 25HZ at about 18 points of normal operating condition
It is as shown in the table for IG receiver section voltage in clock:
| Serial number | Time | Data (V) |
| 1 | 2018-04-05 17:20:16.200 | 20.2 |
| 2 | 2018-04-05 17:20:16.400 | 20.2 |
| … | … | 20.2 |
| 3131 | 2018-04-05 17:30:16.400 | 0.8 |
| … | … | 0.8 |
| 3138 | 2018-04-05 17:30:17.800 | 0.3 |
| 3139 | 2018-04-05 17:30:17.400 | 0.3 |
| … | … | 0.3 |
| 3159 | 2018-04-05 17:30:21.400 | 0.2 |
| 3160 | 2018-04-05 17:30:21.600 | 0.2 |
| … | … | 0.2 |
| 3164 | 2018-04-05 17:30:22.400 | 0.1 |
| 3165 | 2018-04-05 17:30:22.600 | 0.1 |
| … | … | 0.1 |
| 3313 | 2018-04-05 17:30:52.200 | 0.0 |
| 3314 | 2018-04-05 17:30:52.400 | 0.0 |
| … | … | 0.0 |
| 3321 | 2018-04-05 17:30:53.800 | 0.1 |
| 3322 | 2018-04-05 17:30:54.000 | 0.1 |
| … | … | 0.1 |
| 3326 | 2018-04-05 17:30:55.800 | 0.0 |
| 3327 | 2018-04-05 17:30:56.000 | 0.0 |
| … | … | 0.0 |
| 3718 | 2018-04-05 17:32:14.200 | 1.7 |
| 3719 | 2018-04-05 17:32:14.400 | 1.7 |
| … | … | 1.7 |
| 3729 | 2018-04-05 17:32:16.400 | 2.4 |
| 3730 | 2018-04-05 17:32:16.600 | 2.4 |
| … | … | 2.4 |
| 3758 | 2018-04-05 17:32:52.200 | 20.2 |
| 3759 | 2018-04-05 17:32:52.400 | 20.2 |
| … | … | … |
| 5386 | 2018-04-05 17:38:17.800 | 20.1 |
| 5387 | 2018-04-05 17:38:18.000 | 20.1 |
Track circuit monitoring data can be divided mainly into two stages: adjusting stage and branch stage.At adjusting stage track
The normal adjusting stage voltage in receiving end is 20.2V in unoccupied state, upper table, may there is small fluctuation up and down.Branch
Stage train is by the track circuit section, and during branch, going out clear, track circuit drops to shunting voltage by normal voltage
(0V), moment rises to normal voltage again after about 2 minutes.
Track circuit data variation very little in the adjusting stage, and failure or may cause failure delta data Zhan it is total
Body quantity small part, therefore compression ratio needed for data processing is very high, in the premise for saving room and time expense
Under the railway monitoring data of high compression rate unziped it be an important issue.
Summary of the invention
The present invention provides a kind of track circuit monitoring data decompression method and processing system based on parameter identification, solutions
It has determined the problem of unziping it the railway monitoring data of high compression rate, while room and time needed for saving decompression is opened
Pin.
Technical solution provided by the invention is as follows:
The invention discloses a kind of track circuit monitoring data decompression methods based on parameter identification, are used for memory-type
Track circuit monitoring data unzip it；The memory-type railway monitoring data include multiple storing data bytes, store number
According to byte be omission label or routine data byte, each routine data byte include date stamp and voltage corresponding with date stamp
Data value；The track circuit monitoring data decompression method the following steps are included:
Step S1 ': data collection interval is read；
Step S2 ': it is stored initial storage data byte as restoring data byte；
Step S3 ': it reads next storing data byte and is judged；When the storing data byte is routine data word
When section, step S4 ' is carried out；When the storing data byte is to omit label, step S5 ' is carried out；
Step S4 ': it is stored using the routine data byte as restoring data byte, returns to step S3 '；
Step S5 ': being reduction datum point data byte by the last one restoring data type flags；Read next storage number
According to byte, it is marked as pre-read routine data byte；According to the timestamp of pre-read routine data byte, reduction datum point number
Number is omitted according to the timestamp and data acquisition time interval calculation of byte, the voltage data value of reduction datum point data byte is repeated
Voltage data value as restoring data byte is stored, while sequential storage presses the time that data collection interval generates
Stamp, number of repetition are to omit number；Return to step S3 '.
Preferably, the data collection interval is 40 milliseconds.
Preferably, it is (T2-T1)/t-1 that number is omitted in the step S5 '；
Wherein, t is data collection interval, and T1 is the timestamp of reduction datum point data byte, and T2 is that pre-read is conventional
The timestamp of data byte.
Preferably, " timestamp that sequential storage is generated by data collection interval " includes: in the step S5 '
J-1 timestamp of sequential storage；When j is the integer greater than 2, the data value of the timestamp of j-1 is followed successively by T1+1*
t,……,T1+(j-1)*t；When j=2, the data value of the timestamp of j-1 is T1+1*t；
Wherein, j-1=(T2-T1)/t-1 is to omit number, and t is data collection interval, and T1 is reduction datum point data word
The timestamp of section, T2 are the timestamp of pre-read routine data byte.
Based on identical inventive concept, the invention also discloses at a kind of track circuit monitoring data based on parameter identification
Reason system, including data decompression device:
Memory-type track circuit monitoring data decompression is condensed to reduction-type track circuit monitoring data by the data decompression device,
Memory-type railway monitoring data include multiple storing data bytes, and storing data byte is to omit label or routine data byte,
Each routine data byte includes date stamp and voltage data value corresponding with date stamp；
The data decompression device calculates according to the timestamp for the storing data byte for omitting label front and back and omits number, to omit
The voltage data value of storing data byte before label is the voltage data value of reduction datum point data byte, according to omission number and also
The quasi- data byte of former base unzips it.
Preferably, the storing data byte for omitting label front and back is routine data byte.
Preferably, track circuit smp data processing system further includes data compressor；
The data compressor is by the streaming track circuit monitoring data pressure of input track circuit monitoring data processing system
Contracting is stored as the memory-type track circuit monitoring data；
Streaming track circuit monitoring data include multiple stream data bytes, and each stream data byte includes data
Stamp and voltage data value corresponding with date stamp, the fixed data acquisition time in the date stamp interval of adjacent stream data byte
Interval.
Preferably, track circuit smp data processing system further includes parameter identification marker；
The parameter identification marker convection type track circuit monitoring data carry out parameter identification label, to each streaming number
Meet data compression label according to byte output or is unsatisfactory for data compression label；
Parameter is identified the streaming track circuit monitoring data boil down to memory-type track after label by the data compressor
Circuit monitoring data by one or more consecutive there is the stream data byte-code compression for meeting data compression label to mark to omit
To there is note the stream data byte for being unsatisfactory for data compression label to be stored as storing data byte.
Preferably, the parameter identification marker includes: data grouping module, data mutation artificial intelligence module, fluctuation
Mark module and mark module；
Streaming track circuit monitoring data are divided into multi-group data section by data grouping module, and every group of data segment includes multiple
Stream data byte；
Data mutation artificial intelligence module judges that the voltage data value in data segment whether there is mutation, and flag data is prominent
Become separation；
Judgment module is fluctuated to there is no the data segments of mutation to carry out fluctuation range judgement；
Mark module exports not in the data segment that there is mutation from the stream data byte after data mutation separation
Meet data compression label, to there is no stream data byte of the voltage data value beyond fluctuation range in the data segment of mutation is defeated
It is unsatisfactory for data compression label out, data compression label is met to the output of remaining stream data byte.
Compared with prior art, the present invention can at least bring it is following the utility model has the advantages that
It solves the problems, such as to unzip it the memory-type railway monitoring data of high compression rate, while saving decompression institute
The room and time expense needed.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, the present invention is given furtherly
It is bright.
Fig. 1 is the block schematic illustration of track circuit smp data processing system of the present invention；
Fig. 2 is the flow diagram of one embodiment of track circuit monitoring data compression method of the present invention；
Fig. 3 is that the frame of the parameter identification marker of one embodiment of the invention middle orbit circuit monitoring data processing system shows
It is intended to；
Fig. 4 is the flow diagram of one embodiment of track circuit monitoring data decompression method of the present invention.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application range as defined in the appended claims.
To make simplified form, part related to the present invention is only schematically shown in each figure, they are not represented
Its practical structures as product.In addition, there is identical structure or function in some figures so that simplified form is easy to understand
Component only symbolically depicts one of those, or has only marked one of those.Herein, "one" is not only indicated
" only this ", can also indicate the situation of " more than one ".
Fig. 1 is shown the present invention is based on the frame diagram of the track circuit smp data processing system of parameter identification, and track is electric
For road smp data processing system for handling streaming track circuit monitoring data, streaming track circuit monitoring data include multiple streams
Formula data byte is identified based on parameter by the one or more consecutive stream for meeting parameter identification contractive condition when carrying out data compression
The compression of formula data byte is stored as omitting label, while by the part flow data of the response datas details such as mutation, unusual fluctuations
It stores to byte primitiveness, carries out data compression and decompression under the premise of retaining data details as far as possible.
Track circuit smp data processing system includes data compressor 01, data decompression device 02 and parameter identification marker
03。
03 convection type track circuit monitoring data of parameter identification marker carry out parameter identification label, to each stream data
Byte output meets data compression label or is unsatisfactory for data compression label.
Data compressor 01 is electric by the streaming track circuit monitoring data boil down to memory-type track after parameter identification label
Road monitoring data will be marked with the one or more consecutive stream data byte-code compression for meeting data compression label to omit,
And adjacent such stream data byte only needs to mark using an omission, will have the streaming for being unsatisfactory for data compression label
Data byte is stored as storing data byte.
Memory-type track circuit monitoring data decompression is condensed to reduction-type track circuit monitoring data, root by data decompression device 02
It is calculated according to the timestamp for the storing data byte for omitting label front and back and omits number, to omit (or after omitting label) before label
Storing data byte is reduction datum point data byte, is unziped it according to omission number and reduction datum point data byte.
Briefly, the track circuit monitoring data compression method based on parameter identification in the present embodiment, comprising the following steps:
Step S1: a stream data byte of streaming track circuit monitoring data is read；
Step S2: judge whether the stream data byte meets parameter identification contractive condition；When stream data byte is discontented
When sufficient parameter identification contractive condition, step S3 is carried out；When stream data byte meets parameter identification contractive condition, step is carried out
S4；
Step S3: storing stream data byte as storing data byte, returns to step S1；
Step S4: it reads the last one storing data byte and it is judged；When the last one storing data byte
When not to omit label, step S5 is carried out；When the last one storing data byte is to omit label, step S1 is returned to；
Step S5: label will be omitted as storing data byte and stored, step S1 is returned to.
Specifically, consider the write-in situation of memory, each stream data byte includes date stamp and corresponding with date stamp
Voltage data value, the fixed data collection interval in the date stamp interval of adjacent stream data byte；Each stream data
Byte can also include a data sequence number, convenient for being positioned in memory.
It is specifically described a kind of track circuit monitoring data compression method by way of examples below.
Embodiment 1:
The flow chart of track circuit monitoring data compression method based on parameter identification in the present embodiment is as shown in Fig. 2, packet
Include following steps:
Step S0: convection type track circuit monitoring data carry out parameter identification label, export to each stream data byte
Meet data compression label or is unsatisfactory for data compression label；
By the streaming track circuit monitoring data input data compressor 01 after label, data sequence number i=after compression is preset
0；
Step S1: sequence reads a stream data byte of streaming track circuit monitoring data, including timestamp and electricity
Press data value；
Step S2: judging whether the stream data byte meets parameter identification contractive condition, has and meets data compression mark
The stream data byte of note is judged as meeting parameter identification contractive condition, has the stream data for being unsatisfactory for data compression label
Byte is judged as being unsatisfactory for parameter identification contractive condition；When stream data byte is unsatisfactory for parameter identification contractive condition, into
Row step S3；When stream data byte meets parameter identification contractive condition, step S4 is carried out；
Step S3: it is stored stream data byte as storing data byte, it may be assumed that write-in data sequence number i=i+1,
And write time stamp and voltage data value under the data sequence number；Return to step S1；
Step S4: it reads the last one storing data byte and it is judged；When the last one storing data byte
When not to omit label, step S5 is carried out；When the last one storing data byte is to omit label, step S1 is returned to；
Step S5: will omit label as storing data byte and store, and can will specifically omit and mark write-in date stamp
Memory sequence, voltage data value memory sequence are empty data；Return to step S1.
The data compression method of the present embodiment reads streaming track circuit monitoring data with time sequencing, with the former stream formula number
It is benchmark data according to byte (stream data byte abbreviation data), judges whether follow-up data meets contractive condition, meet compression
The follow-up data of condition is defaulted as consistent with reference data, ignores unnecessary data variation details, omits and repeat to record, omit
Repetition be recorded as timestamp and data value.Moreover, only with an omission marked, showing within a period of time of omission
Data have compression.For not meeting the data of contractive condition, logging timestamp and data value with chapter and verse.
Embodiment 2:
The present invention discloses a kind of preferred track circuit monitoring data on the basis of 1 data compression method of embodiment
Compression method and processing system, the difference from embodiment 1 is that, according to the distinguishing feature of track circuit monitoring data, to above-mentioned
Parameter identification marker 03 and step S0 are optimized.
It summarizes monitoring data and service experience, track circuit monitoring data has a characteristic that
(1) data variation very little under normal circumstances
When the track circuit adjusting stage, receiving-end voltage has the fluctuation up and down of 0.1V or so, about receiving-end voltage 20.2V
0.5% or so, this fluctuation has for several times in a few minutes, every time continue at 10 seconds to 50 seconds.Some track section fluctuations are more
It is larger, but the threshold value apart from early warning is also far.
When the track circuit shunting stage, theoretically, it should which branch moment drops to 0V by adjusting stage voltage, and in branch
0V is remained under stage, when train leaves section, and track circuit goes out clear, moment is answered to rise to adjusting stage voltage by 0V.It is real
On border, branch and moment clear out, voltage was changed stepwise at 1 second or so；And at 2 minutes or so of track circuit shunting stage
In, voltage is beated between 0.1V and 0V, and when this passes through with train, train is with rail as the variation of contact force causes to contact
The variation of resistance is related.It is not especially desirable track circuit section in respective shunt situation, this bounce variation can be bigger, very
To reaching 0.5V or so.But this voltage value, even 0.5V, the 7.4V or less of distance technique code requirement is also far, less than
7%, this amplitude, the only variation of parameter a very little.
(2) amplitude of variation is not enough to reflect that the data details of equipment state deterioration can be ignored
When the adjusting stage, the voltage fluctuation of track circuit receiving end 15% or so generally all is not enough to influence the normal of equipment
It uses.And only 0.5% or so fluctuation, it may be from and track circuit equipment itself, it is also possible to the influence of sensor is acquired,
But regardless of caused by factor, if it is the fluctuation of regularity 5% or so, it is not enough to reflect that track circuit equipment itself has
Variation；In fact, maintenance personal is also to ignore to this variation in maintenance of equipment.
(3) it failure or the delta data of failure may be caused only accounts for total number small part
Signalling arrangement failure rate requires Mei≤2.0/every hundred group conversion track switch, this is one and considers the failures such as track switch
The overall target of the higher equipment of rate, specific in terms of track circuit, failure rate requires just higher.From data volume, failure
Data account for total amount of data less than 0.01%；Delta data relevant to failure, generally also less than the 10% of total amount of data.
(4) variation of non-regularity, amplitude small certain exception that may also reflect equipment again
The sporadic anomalous variation of the non-regularity of acquired data, although amplitude of variation is not enough to cause equipment fault,
It may imply that certain unstable state has occurred in equipment, there are failure risks.For example, receiving-end voltage is usually all in 20.0V
Fluctuation in ± 0.5V, and since sometime putting, there is 20.0V ± 1.5V fluctuation.Although this fluctuation range meets
25HZ track circuit technical standard, but be most likely equipment have occurred individual part deterioration, have occurred external environment influence or
Maintenance adjustment etc. is carried out.These variations must cause height weight although amplitude is little and will not directly result in equipment fault
Depending on these variation details should not be omitted in compression process.
Based on this, in the track circuit smp data processing system of the present embodiment, parameter identification marker 03 includes: data
Grouping module 031, mark module 034, data mutation artificial intelligence module 032 and fluctuation mark module 034, block schematic illustration
As shown in Figure 3.
Streaming track circuit monitoring data are divided into multi-group data section by data grouping module 031, and every group of data segment includes
Multiple stream data bytes.
Data mutation artificial intelligence module 032 judges that the voltage data value in data segment whether there is mutation, and reference numerals
According to mutation separation；Data mutation artificial intelligence module 032 identify whether there is numerical value accidental data, prevent amplitude of variation less but
Sporadic data variation is filtered, basic principle be compared with maximum value and minimum value in the past period, if
Variation is more than the certain multiple of amplitude peak in the past, is taken as being mutated.
Judgment module 033 is fluctuated to there is no the data segments of mutation to carry out fluctuation range judgement.
034 pair of the mark module stream data byte output existed after the interior mutation separation from data of data segment of mutation
It is unsatisfactory for data compression label, to there is no the stream data bytes that voltage data value in the data segment of mutation exceeds fluctuation range
Output is unsatisfactory for data compression label, meets data compression label to the output of remaining stream data byte.
Wherein, there will be no the small data of amplitude of variation in the data segment of mutation to elect for fluctuation judgment module 033, treats as
The data not changed are marked, and the biggish data of amplitude of variation then retain.Fluctuate the alternative setting of judgment module 033
Manually to force judgment model or artificial intelligence judgment model.
Manually force judgment model under, fluctuation range by preset or be manually entered reference voltage value, fluctuation the upper limit, wave
Dynamic lower limit determines, for example, not using compression etc. in special circumstances in data variation details, can force amplitude of variation be set as " 0 ".
Artificial intelligence judgment mode is set for the amplitude of personalized, continuous self-teaching adjusting and optimizing of different equipment
Set mode.Under artificial intelligence judgment model, fluctuation range is by normal in m days (such as 30 days, can be configured as a longer period of time)
The data voltage average value X of data?, fluctuation upper limit XOn, fluctuation lower limitUnderIt determines, m is the integer greater than 1.
Correspondingly, above-mentioned steps S0 preferably includes step in detailed below:
Step S0-1: streaming track circuit monitoring data are divided into multi-group data section, every group of data segment includes multiple streams
Formula data byte；
Step S0-2: reading n group data segment (such as 5 groups), and n is the integer greater than 1；
Step S0-3: whether the voltage data value in the diagnosis of the artificial intelligence module 032 n group data segment is mutated by data
There are mutation；When there is mutation, step S0-4 is carried out；When there is no mutation, step S0-5 is carried out；
Step S0-4: flag data is mutated separation；It is prominent to data for first stream data byte in n group data segment
Become separation, output meets data compression label；The last one in the latter to n group data segment of separation is mutated for data
Stream data byte, output are unsatisfactory for data compression label；Step S0-2 is returned to later；
Step S0-5: to there is no the n group data segments of mutation, fluctuation range judgement is carried out by fluctuation judgment module 033；It is right
Stream data byte of the voltage data value in fluctuation range, output meet data compression label；Wave is exceeded to voltage data value
The stream data byte of dynamic range, output are unsatisfactory for data compression label；Step S0-2 is returned to later.
For compressed data mode, need to consider the convenience of track circuit reading data.For example, needing to read certain
The data of one track circuit section in a period of time, this period may be across day, across the moon, even straddle over year；
Simultaneously, it is also desirable to read the data of whole station track circuit in a period；It even needs to choose any several track circuits to exist
Data in one period are compared.
Correspondingly, it the invention also discloses a kind of track circuit monitoring data decompression method based on parameter identification, uses
In memory-type track circuit monitoring data are decompressed into reduction-type track circuit monitoring data, above-mentioned data compression method shape is used
At memory-type railway monitoring data include multiple storing data bytes, storing data byte is to omit label (concrete form can
Are as follows: timestamp memory sequence is to omit label, and voltage data value memory sequence is empty data) or routine data byte, Mei Yichang
Advising data byte includes date stamp and voltage data value corresponding with date stamp.
Briefly, track circuit monitoring data decompression method the following steps are included:
Step S1 ': data collection interval is read；
Step S2 ': it is stored initial storage data byte as restoring data byte；
Step S3 ': next storing data byte is read；When the storing data byte is routine data byte, carry out
Step S4 '；When the storing data byte is to omit label, step S5 ' is carried out；
Step S4 ': it is stored using above-mentioned routine data byte as restoring data byte, returns to step S3 '；
Step S5 ': being reduction datum point data byte by the last one restoring data type flags；Read next storage number
According to byte, it is marked as pre-read routine data byte；According to the timestamp of pre-read routine data byte, reduction datum point number
Number is omitted according to the timestamp and data acquisition time interval calculation of byte, the voltage data value of reduction datum point data byte is repeated
Voltage data value as restoring data byte is stored, while sequential storage presses the time that data collection interval generates
Stamp, number of repetition are to omit number；Return to step S3 '.
Specifically, consider the situation that reads and writees of memory, each restoring data of reduction-type track circuit monitoring data
Byte includes date stamp and voltage data value corresponding with date stamp, can also include a data sequence number, convenient in memory
It is positioned.
It is specifically described a kind of track circuit monitoring data decompression method by way of examples below.
Embodiment 3:
The flow chart of the present embodiment middle orbit circuit monitoring uncompressing data is as shown in Figure 4, comprising the following steps:
Data sequence number i=0 after decompression default first；
Step S1 ': data collection interval t is read；
Step S2 ': it is stored initial storage data byte as restoring data byte；That is: number is written in memory
According to serial number 1, first time stamp T 1 and voltage data value for having compressed storing data byte is written under data sequence number 1；
Step S3 ': it reads the timestamp of next storing data byte and is judged；When not marked to omit, into
Row step S4 '；When to omit label, step S5 ' is carried out；
Step S4 ': it is stored using the routine data byte as restoring data byte, it may be assumed that i=is written in memory
The timestamp and voltage data value of the storing data byte is written in i+1 at data sequence number i, is T1 by the time stab；It returns to
Step S3 '；
Step S5 ': the time stamp T 2 of next contiguous storage data byte is read, j=(T2-T1)/t is calculated, finds out province
Slightly number is j-1；Then k=1 is first preset, execution is repeated: { write-in data sequence number i=1+1；Write time stabs T1+k*t；It repeats
Upper voltage data value is written；K=k+1 }；Until k >=j-1；That is: j-1 timestamp of sequential storage；J is the integer greater than 2
When, the data value of the timestamp of j-1 be followed successively by T1+1*t ..., T1+ (j-1) * t；When j=2, the data value of the timestamp of j-1
For T1+1*t, and the corresponding voltage data value of the j-1 timestamp is above-mentioned upper voltage data value；Step is returned to later
S3’。
The present invention is based on track circuit monitoring data compression method, decompression method and the processing systems of parameter identification to be based on
Parameter identification, will reflect the partial data of variation in plant parameters from track circuit monitoring data compression method entirety mass data
Storage is separated with retention parameter details；To the normal data that cannot reflect variation in plant parameters, only record start, at the end of
Between and voltage data value, omit identical numerical value in start and end time section and repeat to record；Ignore in the period amplitude of variation not
It is enough to reflect the details of variation in plant parameters, realizes data compression.By the time for starting, terminating and data value when decompression, also
Former data.It was the period chosen with 30 days through practical proof, data fluctuations allowed band has been set as stringenter 5%, number
According to being divided into 40 milliseconds between acquisition time, path sector data compression ratio reaches 75%, has high compression ratio, and saving is deposited
Store up memory.
Reading and analysis operation to track circuit data, will be related to various dimensions and different angle, right in practice
Time requirement must reach the real-time standard of industrial control system, these require to consider that the time of data processing and space open
Pin.Complicated calculating, the time needed and space expense will be bigger.The time overhead of data decompression 500 milliseconds with
It is interior, meet user data browsing analysis needs, track circuit monitoring data compression method of the invention, decompression method have simply
Efficient advantage.
Mostly important, receiving-end voltage declines, connects when track circuit monitoring data compression method of the present invention is for crossing vehicle
Nearly zero, the data in uphill process, are recorded with chapter and verse, remain data details；It is more than certain to data value fluctuation
The data of range, are also recorded with chapter and verse, and being effectively retained for data details greatly facilitates maintenance of equipment and dimension
Shield.
It is necessarily the characteristic of routine data byte, track electricity of the invention based on the storing data byte for omitting label front and back
Road monitoring data decompression method omits number according to the timestamp and data acquisition time interval calculation that omit label front and back, will save
Slightly label is reduced to one or more consecutive restoring data byte；Solve by the memory-type railway monitoring data of high compression rate into
The problem of row decompression, while saving the required room and time expense of decompression.
In addition, track circuit smp data processing system of the invention is neatly carried out by parameter identification marker 03
The label of accidental data and fluctuation data, fluctuation range can simply set up as a changeless range values, can also
To carry out dynamic adjustment for different sections, different time sections by intelligent algorithm.
It should be noted that track circuit monitoring data compression method, decompression method and processing system of the present invention not office
It is limited to handle track circuit monitoring data, could be applicable to the monitoring data of other equipment, such as railway signal track switch, signal
The parameter of the equipment such as machine, interlocking, LEU, CTC, ZPW2000 largely also has the similar characteristics of track circuit.
The preferred embodiment of the present invention has been described above in detail, but during present invention is not limited to the embodiments described above
Detail can carry out a variety of equivalents to technical solution of the present invention (in full within the scope of the technical concept of the present invention
Amount, shape, position etc.), these equivalents all belong to the scope of protection of the present invention.
Claims (9)
1. a kind of track circuit monitoring data decompression method based on parameter identification, for memory-type track circuit to be monitored number
According to unziping it, it is characterised in that: the memory-type railway monitoring data include multiple storing data bytes, storing data word
Section includes date stamp and voltage data corresponding with date stamp for omission label or routine data byte, each routine data byte
Value；The track circuit monitoring data decompression method the following steps are included:
Step S1 ': data collection interval is read；
Step S2 ': it is stored initial storage data byte as restoring data byte；
Step S3 ': it reads next storing data byte and is judged；When the storing data byte is routine data byte
When, carry out step S4 '；When the storing data byte is to omit label, step S5 ' is carried out；
Step S4 ': it is stored using the routine data byte as restoring data byte, returns to step S3 '；
Step S5 ': being reduction datum point data byte by the last one restoring data type flags；Read next storing data word
Section, is marked as pre-read routine data byte；According to the timestamp of pre-read routine data byte, reduction datum point data word
The timestamp and data acquisition time interval calculation of section omit number, and the voltage data value of reduction datum point data byte is repeated conduct
The voltage data value of restoring data byte is stored, while sequential storage presses the timestamp that data collection interval generates,
Number of repetition is to omit number；Return to step S3 '.
2. track circuit monitoring data decompression method according to claim 1, it is characterised in that:
The data collection interval is 40 milliseconds.
3. track circuit monitoring data decompression method according to claim 1, it is characterised in that:
It is (T2-T1)/t-1 that number is omitted in the step S5 '；
Wherein, t is data collection interval, and T1 is the timestamp of reduction datum point data byte, and T2 is pre-read routine data
The timestamp of byte.
4. track circuit monitoring data decompression method according to claim 3, which is characterized in that in the step S5 '
" timestamp that sequential storage is generated by data collection interval " includes:
J-1 timestamp of sequential storage；When j is the integer greater than 2, the data value of the timestamp of j-1 is followed successively by T1+1*
t,……,T1+(j-1)*t；When j=2, the data value of the timestamp of j-1 is T1+1*t；
Wherein, j-1=(T2-T1)/t-1 is to omit number, and t is data collection interval, and T1 is reduction datum point data byte
Timestamp, T2 are the timestamp of pre-read routine data byte.
5. a kind of track circuit smp data processing system based on parameter identification, including data decompression device, it is characterised in that:
Memory-type track circuit monitoring data decompression is condensed to reduction-type track circuit monitoring data by the data decompression device, is stored
Formula railway monitoring data include multiple storing data bytes, and storing data byte is to omit label or routine data byte, each
Routine data byte includes date stamp and voltage data value corresponding with date stamp；
The data decompression device calculates according to the timestamp for the storing data byte for omitting label front and back and omits number, to omit label
The voltage data value of preceding storing data byte is the voltage data value of reduction datum point data byte, according to omission number and goes back former base
Quasi- data byte unzips it.
6. track circuit smp data processing system according to claim 5, it is characterised in that:
The storing data byte for omitting label front and back is routine data byte.
7. track circuit smp data processing system according to claim 5, it is characterised in that: further include data compression
Device；
The data compressor deposits the streaming track circuit monitoring data compression of input track circuit monitoring data processing system
Storage is the memory-type track circuit monitoring data；
Streaming track circuit monitoring data include multiple stream data bytes, each stream data byte include date stamp and
Voltage data value corresponding with date stamp, between the fixed data acquisition time in the date stamp interval of adjacent stream data byte
Every.
8. track circuit smp data processing system according to claim 7, it is characterised in that: further include parameter identification mark
Remember device；
The parameter identification marker convection type track circuit monitoring data carry out parameter identification label, to each stream data word
Section output meets data compression label or is unsatisfactory for data compression label；
Parameter is identified the streaming track circuit monitoring data boil down to memory-type track circuit after label by the data compressor
Monitoring data have the stream data byte-code compression for meeting data compression label to omit label for one or more consecutive, will
Storing data byte is stored as with the stream data byte for being unsatisfactory for data compression label.
9. track circuit smp data processing system according to claim 8, which is characterized in that the parameter identification label
Device includes: data grouping module, data mutation artificial intelligence module, fluctuation mark module and mark module；
Streaming track circuit monitoring data are divided into multi-group data section by data grouping module, and every group of data segment includes multiple streamings
Data byte；
Data mutation artificial intelligence module judges that the voltage data value in data segment whether there is mutation, and flag data mutation point
Boundary's point；
Judgment module is fluctuated to there is no the data segments of mutation to carry out fluctuation range judgement；
Mark module is unsatisfactory for in the data segment that there is mutation from the stream data byte output after data mutation separation
Data compression label, not to the stream data byte output there is no voltage data value in the data segment of mutation beyond fluctuation range
Meet data compression label, data compression label is met to the output of remaining stream data byte.
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