CN106841830B - Early-warning for high pressure method, apparatus and system based on electric field intensity signal detection - Google Patents
Early-warning for high pressure method, apparatus and system based on electric field intensity signal detection Download PDFInfo
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- CN106841830B CN106841830B CN201611019335.3A CN201611019335A CN106841830B CN 106841830 B CN106841830 B CN 106841830B CN 201611019335 A CN201611019335 A CN 201611019335A CN 106841830 B CN106841830 B CN 106841830B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses provide a kind of the early-warning for high pressure method, apparatus based on electric field intensity signal detection and system, this method to include：Gather original electric field intensity signal；Processing is filtered to the original electric field intensity signal, electric field intensity signal is obtained, records the electric field intensity signal；Extract and record each crest of the electric field intensity signal；According to each crest, the cubic interpolation function between adjacent two crest in the crest is determined；Using the cubic interpolation function, the envelope of the electric field intensity signal is constructed.Because the envelope can accurately reflect the original crest value of the electric field intensity signal, and to caused by artificial or environmental factor trough caused by signal fluctuation reliably compensated, therefore using the electric field intensity signal value that the envelope is reflected as the information for judging whether alarm, the Stability and veracity of warning message in electric field detection and early warning technology can be effectively improved.
Description
Technical field
The present invention relates to Engineering Signal processing technology field, more particularly to a kind of high pressure based on electric field intensity signal detection
Method for early warning, apparatus and system.
Background technology
In Engineering Signal process field, typically believed using analysis the methods of Fourier transformation, wavelet analysis or order ratio analysis
Number in time domain or the characteristic of frequency domain, recycle the characteristic to describe, process signal.And judging whether to report by alarm threshold value
In alert intelligent early-warning system, the link such as disposal of stability of the determination of threshold value, the denoising of signal and signal is most important, relation
To the Stability and veracity of warning message.
At present, the intelligent early-warning technology that electric field detects and early warning technology is important as one, collection electric-field intensity therein
Signal link, because the electric field intensity signal collected easily fluctuates because of artificial or environmental factor, so that signal is frequent
Less than threshold value, such as because sensing station change causes the signal that collects weak, so as to produce the trough of signal, and crest is
It is actual field intensity value, actual electric-field intensity is not less than threshold value, and this has a strong impact on the accuracy of warning message.
So judging whether link of alarming, due to extraction of the conventional method for the signal for judging whether alarm
It has been be short of that, the fluctuation of signal, especially because the sensing station change signal that causes to collect is weak and produces the ripple of signal
Paddy, have a strong impact on the Stability and veracity of warning message.
The content of the invention
The goal of the invention of the present invention be to provide a kind of early-warning for high pressure method, apparatus based on electric field intensity signal detection and
System, to solve in the early-warning for high pressure technology of existing electric field intensity signal detection, alarm signal is influenceed due to the fluctuation of signal
The technical problem of the Stability and veracity of breath.
A kind of first aspect according to an embodiment of the invention, there is provided early-warning for high pressure based on electric field intensity signal detection
Method, including：
Gather original electric field intensity signal；
Processing is filtered to the original electric field intensity signal, electric field intensity signal is obtained, records the electric-field intensity
Signal；
Extract and record each crest of the electric field intensity signal；
According to each crest, the cubic interpolation function between adjacent two crest in the crest is determined；
Using the cubic interpolation function, the envelope of the electric field intensity signal is constructed；
Judge whether the crest value that the envelope of the electric field intensity signal is reflected is more than predetermined threshold value；
If so, then send alarm signal；
If it is not, alarm signal is not sent then.
Further, described extraction and specifically include the step of record each crest of the electric field intensity signal：
Choose sliding window；
Several crest values of the electric field intensity signal are extracted in the sliding window using calculus of finite differences；
Obtain position coordinates of each crest relative to the sliding window；
According to the crest value of each crest and the position coordinates relative to the sliding window, the electric-field intensity is obtained
Each crest of signal.
Further, it is described according to each crest, the cubic interpolation function between adjacent two crest in the crest is determined,
Including：
Establish the cubic interpolation function between adjacent two crest in the crest；
The undetermined coefficient of the cubic interpolation function is determined using Taylor's formula；
According to the undetermined coefficient, the cubic interpolation function is determined.
Further, it is described to utilize the cubic interpolation function, the envelope of the electric field intensity signal is constructed specifically, profit
The value of each point between each two extreme point is determined with the cubic interpolation function, realizes carrying for the electric field intensity signal envelope
Take.
Further, in described the step of being filtered processing to the original electric field intensity signal, using glide filter or
Kalman filter method is filtered processing to the original electric field intensity signal.
A kind of second aspect according to embodiments of the present invention, there is provided early-warning for high pressure dress based on electric field intensity signal detection
Put, described device includes：
Collecting unit, for gathering original electric field intensity signal；
Processing unit, for being filtered processing to the original electric field intensity signal, electric field intensity signal is obtained, recorded
The electric field intensity signal；
Extraction unit, for extracting and recording each crest of the electric field intensity signal；
Function determining unit, for according to each crest, determining inserting three times between adjacent two crest in the crest
Value function；
Envelope construction unit, for utilizing the cubic interpolation function, construct the envelope of the electric field intensity signal；
Whether judging unit, the crest value that the envelope for judging the electric field intensity signal is reflected are more than default threshold
Value；If the crest value that the envelope of the electric field intensity signal is reflected is more than predetermined threshold value, alarm signal is sent.
A kind of third aspect according to embodiments of the present invention, there is provided early-warning for high pressure system based on electric field intensity signal detection
System, the system include：Processor and alarm；
The processor is used to gather original electric field intensity signal；Place is filtered to the original electric field intensity signal
Reason, obtains electric field intensity signal, records the electric field intensity signal；Extract and record each ripple of the electric field intensity signal
Peak；According to each crest, the cubic interpolation function between adjacent two crest in the crest is determined；Utilize the cubic interpolation
Function, construct the envelope of the electric field intensity signal；Judge the crest value that the envelope of the electric field intensity signal is reflected
Whether predetermined threshold value is more than；If the crest value that the envelope of the electric field intensity signal is reflected is more than predetermined threshold value, send
Alarm signal；
The alarm is used for according to the alarm signal, sends early-warning for high pressure alarm.
From above technical scheme, a kind of early-warning for high pressure side based on electric field intensity signal detection provided by the invention
Method, apparatus and system, by being filtered processing to the original electric field intensity signal collected, obtain and record electric-field intensity
Signal, then extract and record each crest of the electric field intensity signal, using each crest, determine phase in the crest
Cubic interpolation function between adjacent two crests；Using the cubic interpolation function, the envelope of the electric field intensity signal is constructed.By
In the envelope obtained by the cubic interpolation construction of function between each group adjacent peaks of the electric field intensity signal, thus energy
Enough original crest values for accurately reflecting the electric field intensity signal, and to the signal wave caused by artificial or environmental factor
Trough caused by dynamic is reliably compensated, therefore the electric field intensity signal value reflected using the envelope is as judgement
The information of no alarm, the Stability and veracity of warning message in electric field detection and early warning technology can be effectively improved.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is according to an early-warning for high pressure provided by the invention detected based on electric field intensity signal for being preferable to carry out exemplifying
The flow chart of method；
Fig. 2 is obtaining using the early-warning for high pressure method based on electric field intensity signal detection of the preferred embodiment shown in Fig. 1
The electric field intensity signal and its envelope line chart arrived；
Fig. 3 is according to an early-warning for high pressure provided by the invention detected based on electric field intensity signal for being preferable to carry out exemplifying
The structured flowchart of device；
Fig. 4 is according to an early-warning for high pressure provided by the invention detected based on electric field intensity signal for being preferable to carry out exemplifying
The structured flowchart of system.
In figure, 1- processors；2- alarms；31- collecting units；32- processing units；33- extraction units；34- functions are true
Order member；35- envelope construction units；36- judging units.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1 is according to the early-warning for high pressure provided by the invention detected based on electric field intensity signal for being originally preferable to carry out exemplifying
The flow chart of method.As shown in Figure 1, methods described includes：
Step S1, original electric field intensity signal is gathered；
Step S2, processing is filtered to the original electric field intensity signal, obtains electric field intensity signal, record the electricity
Field intensity signal；
Step S3, extract and record each crest of the electric field intensity signal；
Step S4, according to each crest, the cubic interpolation function between adjacent two crest in the crest is determined；
Step S5, using the cubic interpolation function, the envelope of the electric field intensity signal is constructed；
Step S6, judge whether the crest value that the envelope of the electric field intensity signal is reflected is more than predetermined threshold value；
Step S7, if so, then sending alarm signal；
Step S8, if it is not, not sending alarm signal then.
Preferably, gathering original electric field intensity signal in the step S1 is specially：Gathered using sensor described original
Electric field intensity signal.
Preferably, it is specially using slip filter to be filtered processing in the step S2 to the original electric field intensity signal
The methods of ripple or Kalman filtering, is filtered processing to the original electric field intensity signal.
Further, extract and specifically wrapped the step of recording each crest of the electric field intensity signal in the step S3
Include：
Choose sliding window；
Several crest values of the electric field intensity signal are extracted in the sliding window using calculus of finite differences, are designated as yi；
Each crest is obtained relative to the position coordinates of sliding window, is designated as xi；Wherein, i is the sequence number of the crest；
According to the crest value of each crest and the position coordinates relative to sliding window, the electric field intensity signal is obtained
Each crest；Specifically, the x is recorded correspondinglyiAnd yi, obtain each crest (x of the electric field intensity signali,
yi)。
Further, in the step S4 according to each crest, determine in the crest between adjacent two crest three times
Interpolating function includes：
Establish the cubic interpolation function between adjacent two crest in the crest；Specifically, the primary peak (x is established1,
y1) and secondary peak (x2, y2) between, secondary peak (x2, y2) and the 3rd crest (x3, y3) between until the N-1 crests
(xN-1, yN-1) and N crests (xN, yN) between all cubic interpolation functions；
The undetermined coefficient of the cubic interpolation function is determined using Taylor's formula；
According to the undetermined coefficient, the cubic interpolation function is determined.
Specifically, if cubic spline function s (x) is in section [xi,xi+1] on have expression formula：
S (x)=aix3+bix2+cix+di
Wherein, ai, bi, ci, diFor undetermined coefficient；
Obtained by Taylor's formula：
Make s'(x)=Mi, then
Similarly in [xi-1,xi] on have
Obtain MiGeneration, which returns s (x), can obtain the s (x) of respective bins, determine the cubic interpolation letter in respective bins
Number.
A kind of early-warning for high pressure method based on electric field intensity signal detection shown in the present embodiment, by collecting
Original electric field intensity signal is filtered processing, obtains and records electric field intensity signal, then extracts and record the electric-field intensity
Each crest of signal, using each crest, determine the cubic interpolation function between adjacent two crest in the crest；Utilize
The cubic interpolation function, construct the envelope of the electric field intensity signal.Because the envelope is by the electric-field intensity
Cubic interpolation construction of function between each group adjacent peaks of signal obtains, it is thus possible to accurately reflects the electric field intensity signal
Original crest value, and to caused by artificial or environmental factor trough caused by signal fluctuation reliably mended
Repay, therefore using the electric field intensity signal value that the envelope is reflected as the information for judging whether alarm, can effectively improve
The Stability and veracity of warning message in electric field detection and early warning technology.
Fig. 2 is to be obtained using the early-warning for high pressure method based on electric field intensity signal detection shown in above preferred embodiment
Electric field intensity signal and its envelope line chart, the specific steps of electric field intensity signal shown in Fig. 2 and its envelope are obtained upper
State in embodiment and be described in detail, repeat no more here.In Fig. 2, curve 1 be the filtered processing of original electric field intensity signal after obtain
Electric field intensity signal, curve 2 is the signal envelope obtained using electric field intensity signal processing method provided by the invention.By
Fig. 2 is understood, trough is produced because of artificial or environmental factor using the electric field intensity signal that sensor is collected, such as song in Fig. 2
11,12,13,14 and 15 points of line 1, cause the signal at trough to be less than threshold value, trigger false alarm；Carried using the present invention
The electric field intensity signal processing method of confession, obtains the envelope of electric field intensity signal, such as curve 2 in figure, to the electric-field strength in Fig. 1
Angle value realizes effective compensation, and the letter for judging whether alarm is used as using the electric field intensity signal value that the envelope is reflected
Number, the accuracy and stably for being used to judge whether the warning message of alarm in electric field detection and early warning technology can be effectively improved
Property.
As shown in figure 3, provided by the invention detected for be preferable to carry out exemplifying according to one based on electric field intensity signal
The structured flowchart of early-warning for high pressure device, described device include：
Collecting unit 31, for gathering original electric field intensity signal；
Processing unit 32, for being filtered processing to the original electric field intensity signal, electric field intensity signal is obtained, remembered
Record the electric field intensity signal；
Extraction unit 33, for extracting and recording each crest of the electric field intensity signal；
Function determining unit 34, for according to each crest, determining in the crest between adjacent two crest three times
Interpolating function；
Envelope construction unit 35, for utilizing the cubic interpolation function, construct the envelope of the electric field intensity signal
Line；
Judging unit 36, it is default whether the crest value that the envelope for judging the electric field intensity signal is reflected is more than
Threshold value；If the crest value that the envelope of the electric field intensity signal is reflected is more than predetermined threshold value, alarm signal is sent.
As shown in figure 4, provided by the invention detected for be preferable to carry out exemplifying according to one based on electric field intensity signal
The structured flowchart of early-warning for high pressure system, the system include：
Processor 1 and alarm 2；
Wherein, the processor 1 is used to gather original electric field intensity signal；The original electric field intensity signal is filtered
Ripple processing, obtains electric field intensity signal, records the electric field intensity signal；Extract and record each of the electric field intensity signal
Crest；According to each crest, the cubic interpolation function between adjacent two crest in the crest is determined；Inserted three times using described
Value function, construct the envelope of the electric field intensity signal；Judge the crest that the envelope of the electric field intensity signal is reflected
Whether value is more than predetermined threshold value；If the crest value that the envelope of the electric field intensity signal is reflected is more than predetermined threshold value, send out
Go out alarm signal；
The alarm 2 is used for according to the alarm signal, sends early-warning for high pressure alarm.
From above technical scheme, a kind of early-warning for high pressure side based on electric field intensity signal detection provided by the invention
Method, apparatus and system, by being filtered processing to the original electric field intensity signal collected, obtain and record electric-field intensity
Signal, then extract and record each crest of the electric field intensity signal, using each crest, determine phase in the crest
Cubic interpolation function between adjacent two crests；Using the cubic interpolation function, the envelope of the electric field intensity signal is constructed.By
In the envelope obtained by the cubic interpolation construction of function between each group adjacent peaks of the electric field intensity signal, thus energy
Enough original crest values for accurately reflecting the electric field intensity signal, and to the signal wave caused by artificial or environmental factor
Trough caused by dynamic is reliably compensated, therefore the electric field intensity signal value reflected using the envelope is as judgement
The information of no alarm, the Stability and veracity of warning message in electric field detection and early warning technology can be effectively improved.
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice invention disclosed herein
Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including undocumented common knowledges in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the invention is not limited in the precision architecture for being described above and being shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (4)
- A kind of 1. early-warning for high pressure method based on electric field intensity signal detection, it is characterised in that methods described includes：Gather original electric field intensity signal；Processing is filtered to the original electric field intensity signal, electric field intensity signal is obtained, records the electric field intensity signal；Extract and record each crest of the electric field intensity signal；According to each crest, the cubic interpolation function between adjacent two crest in the crest is determined；Using the cubic interpolation function, the envelope of the electric field intensity signal is constructed；Judge whether the crest value that the envelope of the electric field intensity signal is reflected is higher than predetermined threshold value；If so, then send alarm signal；If it is not, alarm signal is not sent then；It is described to extract and specifically included the step of recording each crest of the electric field intensity signal：Choose sliding window；Several crest values of the electric field intensity signal are extracted in the sliding window using calculus of finite differences；Obtain position coordinates of each crest relative to the sliding window；According to the crest value of each crest and the position coordinates relative to the sliding window, the electric field intensity signal is obtained Each crest；It is described that cubic interpolation function between adjacent two crest in the crest is determined according to each crest, including：Establish the cubic interpolation function between adjacent two crest in the crest；The undetermined coefficient of the cubic interpolation function is determined using Taylor's formula；According to the undetermined coefficient, the cubic interpolation function is determined；It is described to utilize the cubic interpolation function, the envelope of the electric field intensity signal is constructed specifically, described in utilizing three times Interpolating function determines the value of each point between each two extreme point, realizes the extraction of the electric field intensity signal envelope.
- 2. according to the method for claim 1, it is characterised in that described that the original electric field intensity signal is filtered In the step of processing, processing is filtered to the original electric field intensity signal using glide filter or kalman filter method.
- 3. a kind of early-warning for high pressure device based on electric field intensity signal detection, it is characterised in that described device includes：Collecting unit, for gathering original electric field intensity signal；Processing unit, for being filtered processing to the original electric field intensity signal, electric field intensity signal is obtained, described in record Electric field intensity signal；Extraction unit, for extracting and recording each crest of the electric field intensity signal；Function determining unit, for according to each crest, determining the cubic interpolation letter between adjacent two crest in the crest Number；Envelope construction unit, for utilizing the cubic interpolation function, construct the envelope of the electric field intensity signal；Whether judging unit, the crest value that the envelope for judging the electric field intensity signal is reflected are more than predetermined threshold value； If the crest value that the envelope of the electric field intensity signal is reflected is higher than predetermined threshold value, alarm signal is sent；The extraction unit includes：Subelement is chosen, for choosing sliding window；Subelement is extracted, for extracting several crest values of the electric field intensity signal in the sliding window using calculus of finite differences；First obtains subelement, for obtaining position coordinates of each crest relative to the sliding window；Second obtains subelement, for the crest value according to each crest and the position coordinates relative to the sliding window, Obtain each crest of the electric field intensity signal；The function determining unit includes：Subelement is established, for establishing the cubic interpolation function in the crest between adjacent two crest；First determination subelement, for determining the undetermined coefficient of the cubic interpolation function using Taylor's formula；Second determination subelement, for according to the undetermined coefficient, determining the cubic interpolation function；The envelope construction unit determines the value of each point between each two extreme point using the cubic interpolation function, realizes institute State the extraction of electric field intensity signal envelope.
- 4. a kind of early-warning for high pressure system based on electric field intensity signal detection, it is characterised in that the system includes：Processor and Alarm；The processor is used to gather original electric field intensity signal；Processing is filtered to the original electric field intensity signal, obtained To electric field intensity signal, the electric field intensity signal is recorded；Extract and record each crest of the electric field intensity signal；According to Each crest, determine the cubic interpolation function between adjacent two crest in the crest；Utilize the cubic interpolation function, structure Make the envelope of the electric field intensity signal；Judge whether the crest value that the envelope of the electric field intensity signal is reflected is more than Predetermined threshold value；If the crest value that the envelope of the electric field intensity signal is reflected is more than predetermined threshold value, alarm signal is sent； It is described to extract and specifically included the step of recording each crest of the electric field intensity signal：Choose sliding window；Using calculus of finite differences Several crest values of the electric field intensity signal are extracted in the sliding window；Each crest is obtained relative to the slip The position coordinates of window；According to the crest value of each crest and the position coordinates relative to the sliding window, the electricity is obtained Each crest of field intensity signal；It is described according to each crest, determine inserting three times between adjacent two crest in the crest Value function, including：Establish the cubic interpolation function between adjacent two crest in the crest；Using Taylor's formula determine described in three times The undetermined coefficient of interpolating function；According to the undetermined coefficient, the cubic interpolation function is determined；It is described to utilize the cubic interpolation Function, the envelope of the electric field intensity signal is constructed specifically, determining each two extreme point using the cubic interpolation function Between each point value, realize the extraction of the electric field intensity signal envelope；The alarm is used for according to the alarm signal, sends early-warning for high pressure alarm.
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| CN115469345A (en) * | 2022-11-02 | 2022-12-13 | 深圳市沃达孚科技有限公司 | High-voltage electric field operation risk early warning equipment based on RTK high accuracy positioning |
| CN115407378B (en) * | 2022-11-02 | 2023-03-24 | 深圳市沃达孚科技有限公司 | High-voltage electric field operation risk early warning method and device based on RTK high-precision positioning |
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