CN106841830A - 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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- CN106841830A CN106841830A CN201611019335.3A CN201611019335A CN106841830A CN 106841830 A CN106841830 A CN 106841830A CN 201611019335 A CN201611019335 A CN 201611019335A CN 106841830 A CN106841830 A CN 106841830A
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- electric field
- field intensity
- intensity signal
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- envelope
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
Abstract
The invention discloses there is provided a kind of early-warning for high pressure method, apparatus and system based on electric field intensity signal detection, the method includes：Gather original electric field intensity signal；Treatment is filtered to the original electric field intensity signal, electric field intensity signal is obtained, the electric field intensity signal is recorded；Extract and record each crest of the electric field intensity signal；According to described 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.The original crest value of the electric field intensity signal can accurately be reflected due to the envelope, and to reliably being compensated due to the trough produced by signal fluctuation caused by artificial or environmental factor, therefore the electric field intensity signal value for being reflected using the envelope can effectively improve the Stability and veracity of warning message in electric field detection and early warning technology as the information for judging whether alarm.
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 using the methods such as Fourier transformation, wavelet analysis or order ratio analysis analysis letter
Number in time domain or the characteristic of frequency domain, recycle the characteristic to describe, process signal.And report is being judged whether 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, electric field detection and early warning technology are used as an important intelligent early-warning technology, collection electric-field intensity therein
Signal link, because the electric field intensity signal for collecting 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 for collecting weak, so that the trough of signal is produced, 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, the extraction due to conventional method for the signal for judging whether alarm
It has been be short of that, the fluctuation of signal, especially because sensing station change causes the signal for collecting weak and produces the ripple of signal
Paddy, has a strong impact on the Stability and veracity of warning message.
The content of the invention
Goal of the invention of the invention be provide it is a kind of based on electric field intensity signal detection early-warning for high pressure method, device and
System, in the early-warning for high pressure technology for solving 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；
Treatment is filtered to the original electric field intensity signal, electric field intensity signal is obtained, the electric-field intensity is recorded
Signal；
Extract and record each crest of the electric field intensity signal；
According to described 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 sending alarm signal；
If it is not, not sending alarm signal 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 and the position coordinates relative to the sliding window of each crest, the electric-field intensity is obtained
Each crest of signal.
Further, each crest described in the basis, determines the cubic interpolation function between adjacent two crest in the crest,
Including：
Set up 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, carrying for the electric field intensity signal envelope is realized
Take.
Further, it is described the step of be filtered treatment to the original electric field intensity signal in, using glide filter or
Kalman filter method is filtered treatment 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 treatment to the original electric field intensity signal, obtains electric field intensity signal, record
The electric field intensity signal；
Extraction unit, for extracting and records each crest of the electric field intensity signal；
Function determining unit, for according to described each crest, determining to insert for three times in the crest between adjacent two crest
Value function；
Envelope construction unit, for utilizing the cubic interpolation function, constructs the envelope of the electric field intensity signal；
Judging unit, whether the crest value that the envelope for judging the electric field intensity signal is reflected is 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 includes：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 described each crest, the cubic interpolation function between adjacent two crest in the crest is determined；Using the cubic interpolation
Function, constructs 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 that the present invention is provided
Method, apparatus and system, treatment is filtered by the original electric field intensity signal for collecting, and obtains and record electric-field intensity
Signal, then extract and record each crest of the electric field intensity signal, using described 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
Cubic interpolation construction of function between the envelope is each group adjacent peaks by the electric field intensity signal is obtained, thus energy
Enough original crest values for accurately reflecting the electric field intensity signal, and to due to signal wave caused by artificial or environmental factor
Produced trough is moved reliably to be compensated, therefore the electric field intensity signal value reflected using the envelope is as judgement
The information of no alarm, can effectively improve the Stability and veracity of warning message in electric field detection and early warning technology.
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 for needing to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the early-warning for high pressure based on electric field intensity signal detection provided according to the present invention for being preferable to carry out exemplifying
The flow chart of method；
Fig. 2 is obtaining using the early-warning for high pressure method detected based on electric field intensity signal of the preferred embodiment shown in Fig. 1
The electric field intensity signal and its envelope line chart for arriving；
Fig. 3 is the early-warning for high pressure based on electric field intensity signal detection provided according to the present invention for being preferable to carry out exemplifying
The structured flowchart of device；
Fig. 4 is the early-warning for high pressure based on electric field intensity signal detection provided according to the present invention 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 unit；35- envelope construction units；36- judging units.
Specific 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 a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is the early-warning for high pressure detected based on electric field intensity signal provided according to the present invention for being originally preferable to carry out exemplifying
The flow chart of method.As shown in Figure 1, methods described includes：
Step S1, the original electric field intensity signal of collection；
Step S2, treatment is filtered to the original electric field intensity signal, obtains electric field intensity signal, record the electricity
Field intensity signal；
Step S3, each crest for extracting and recording the electric field intensity signal；
Step S4, according to described each crest, determine the cubic interpolation function between adjacent two crest in the crest；
Step S5, using the cubic interpolation function, construct the envelope of the electric field intensity signal；
Step S6, judge crest value that the envelope of the electric field intensity signal reflected whether 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, original electric field intensity signal is gathered in the step S1 to be specially：Gather described original using sensor
Electric field intensity signal.
Preferably, treatment is filtered to the original electric field intensity signal in the step S2 to be specially using slip filter
The method such as ripple or Kalman filtering is filtered treatment to the original electric field intensity signal.
Further, extracted in the step S3 and specifically wrapped the step of recording each crest of the electric field intensity signal
Include：
Choose sliding window；
Several crest values of the electric field intensity signal are extracted in the sliding window using calculus of finite differences, y is designated asi；
Each crest is obtained relative to the position coordinates of sliding window, x is designated asi；Wherein, i is the sequence number of the crest；
According to the crest value and the position coordinates relative to sliding window of each crest, the electric field intensity signal is obtained
Each crest；Specifically, the x is recorded correspondinglyiAnd yi, obtain each crest of the electric field intensity signal (xi,
yi)。
Further, in the step S4 according to described each crest, three times in the crest between adjacent two crest are determined
Interpolating function includes：
Set up the cubic interpolation function between adjacent two crest in the crest；Specifically, the primary peak (x is set up1,
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 interval [xi,xi+1] on have expression formula：
S (x)=aix3+bix2+cix+di
Wherein, ai, bi, ci, diIt is undetermined coefficient；
Obtained by Taylor's formula：
Make s'(x)=Mi, then
Similarly in [xi-1,xi] on have
Obtain MiIn generation, returns s (x) and can obtain the s (x) of respective bins, determines 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 treatment, obtains and record electric field intensity signal, then extract and record the electric-field intensity
Each crest of signal, using described each crest, determines the cubic interpolation function between adjacent two crest in the crest；Utilize
The cubic interpolation function, constructs 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 is obtained, it is thus possible to accurately reflect the electric field intensity signal
Original crest value, and to reliably being mended due to the trough produced by signal fluctuation caused by artificial or environmental factor
Repay, therefore the electric field intensity signal value reflected using the envelope can be effectively improved as the information for judging whether alarm
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 detected based on electric field intensity signal shown in above preferred embodiment
Electric field intensity signal and its envelope line chart, obtain the specific steps of electric field intensity signal shown in Fig. 2 and its envelope upper
Detailed description in embodiment is stated, is repeated no more here.In Fig. 2, curve 1 be the filtered treatment of original electric field intensity signal after obtain
Electric field intensity signal, curve 2 is the signal envelope obtained using the electric field intensity signal processing method that provides of the present invention.By
Fig. 2 understands that the electric field intensity signal collected using sensor produces trough because of artificial or environmental factor, bent in such as Fig. 2
11,12,13,14 and 15 points of line 1, cause the signal at trough 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, curve 2 such as in figure, to the electric-field strength in Fig. 1
Angle value realizes effective compensation, and the electric field intensity signal value reflected using the envelope is used as the letter for judging whether alarm
Number, can effectively improve electric field detection and early warning technology in for judge whether alarm warning message accuracy and stabilization
Property.
As shown in figure 3, to be provided according to the present invention for being preferable to carry out exemplifying based on electric field intensity signal detection
The structured flowchart of early-warning for high pressure device, described device includes：
Collecting unit 31, for gathering original electric field intensity signal；
Processing unit 32, for being filtered treatment to the original electric field intensity signal, obtains electric field intensity signal, note
Record the electric field intensity signal；
Extraction unit 33, for extracting and records each crest of the electric field intensity signal；
Function determining unit 34, for according to described each crest, determining three times in the crest between adjacent two crest
Interpolating function；
Envelope construction unit 35, for utilizing the cubic interpolation function, constructs the envelope of the electric field intensity signal
Line；
Judging unit 36, whether the crest value that the envelope for judging the electric field intensity signal is reflected is 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.
As shown in figure 4, to be provided according to the present invention for being preferable to carry out exemplifying based on electric field intensity signal detection
The structured flowchart of early-warning for high pressure system, the system includes：
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 treatment, obtains electric field intensity signal, records the electric field intensity signal；Extract and record each of the electric field intensity signal
Crest；According to described each crest, the cubic interpolation function between adjacent two crest in the crest is determined；Inserted using described three times
Value function, constructs 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 that the present invention is provided
Method, apparatus and system, treatment is filtered by the original electric field intensity signal for collecting, and obtains and record electric-field intensity
Signal, then extract and record each crest of the electric field intensity signal, using described 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
Cubic interpolation construction of function between the envelope is each group adjacent peaks by the electric field intensity signal is obtained, thus energy
Enough original crest values for accurately reflecting the electric field intensity signal, and to due to signal wave caused by artificial or environmental factor
Produced trough is moved reliably to be compensated, therefore the electric field intensity signal value reflected using the envelope is as judgement
The information of no alarm, can effectively improve the Stability and veracity of warning message in electric field detection and early warning technology.
Those skilled in the art considering specification and after putting into practice invention disclosed herein, will readily occur to it is of the invention its
Its embodiment.The application is intended to any modification of the invention, purposes or adaptations, these modifications, purposes or
Person's adaptations follow general principle of the invention and including undocumented common knowledge 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 being described above and be shown in the drawings, and
And can without departing from the scope carry out various modifications and changes.The scope of the present invention is only limited by appended claim.
Claims (7)
1. it is a kind of based on electric field intensity signal detection early-warning for high pressure method, it is characterised in that methods described includes：
Gather original electric field intensity signal；
Treatment is filtered to the original electric field intensity signal, electric field intensity signal is obtained, the electric field intensity signal is recorded；
Extract and record each crest of the electric field intensity signal；
According to described 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 sending alarm signal；
If it is not, not sending alarm signal then.
2. method according to claim 1, it is characterised in that the extraction and record the electric field intensity signal each
The step of crest, specifically includes：
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 and the position coordinates relative to the sliding window of each crest, the electric field intensity signal is obtained
Each crest.
3. method according to claim 2, it is characterised in that each crest described in the basis, in determining the crest
Cubic interpolation function between adjacent two crest, including：
Set up 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.
4. method according to claim 3, it is characterised in that described to utilize the cubic interpolation function, constructs the electricity
The envelope of field intensity signal is real specifically, determine the value of each point between each two extreme point using the cubic interpolation function
The extraction of the existing electric field intensity signal envelope.
5. method according to claim 4, it is characterised in that described is filtered to the original electric field intensity signal
In the step for the treatment of, treatment is filtered to the original electric field intensity signal using glide filter or kalman filter method.
6. it is a kind of based on electric field intensity signal detection early-warning for high pressure device, it is characterised in that described device includes：
Collecting unit, for gathering original electric field intensity signal；
Processing unit, for being filtered treatment to the original electric field intensity signal, obtains electric field intensity signal, and record is described
Electric field intensity signal；
Extraction unit, for extracting and records each crest of the electric field intensity signal；
Function determining unit, for according to described each crest, determining the cubic interpolation letter in the crest between adjacent two crest
Number；
Envelope construction unit, for utilizing the cubic interpolation function, constructs 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 is 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.
7. it is a kind of based on electric field intensity signal detection early-warning for high pressure system, it is characterised in that the system includes：Processor and
Alarm；
The processor is used to gather original electric field intensity signal；Treatment is filtered to the original electric field intensity signal, is 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
Described each crest, determines the cubic interpolation function between adjacent two crest in the crest；Using 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；
The alarm is used for according to the alarm signal, sends early-warning for high pressure alarm.
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| CN112666405A (en) * | 2021-03-16 | 2021-04-16 | 北京紫光青藤微系统有限公司 | Method and device for field intensity detection and communication equipment |
| CN115407378A (en) * | 2022-11-02 | 2022-11-29 | 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112666405A (en) * | 2021-03-16 | 2021-04-16 | 北京紫光青藤微系统有限公司 | Method and device for field intensity detection and communication equipment |
| CN115407378A (en) * | 2022-11-02 | 2022-11-29 | 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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