CN117804738A - Positioning method, device and equipment of knocking point and storage medium - Google Patents
Positioning method, device and equipment of knocking point and storage medium Download PDFInfo
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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Abstract
The invention relates to the technical field of positioning, and discloses a method, a device, equipment and a storage medium for positioning a knocking point, which are used for improving the accuracy of knocking point positioning. The positioning method of the knocking point comprises the following steps: screening out the knocking points belonging to manual knocking from the abnormal points corresponding to the vibration signals identified in the vibration data, merging the knocking points conforming to the merging conditions to obtain new vibration data, and carrying out positioning calculation based on the knocking points corresponding to the new vibration data.
Description
Technical Field
The present invention relates to the field of positioning technologies, and in particular, to a method, an apparatus, a device, and a storage medium for positioning a tapping point.
Background
In order to know the transmission performance of the optical cable, optimize the network layout and ensure the network safety, the optical cable census needs to be carried out, and the positioning of the knocking position is an important mode of the optical cable census.
At present, a method for positioning a knocking position generally obtains light scattering information, light reflection information and light interference information of a knocking point, obtains the length of a test optical fiber based on light scattering information analysis, and obtains the distance between the knocking point and a test tail end based on light interference information analysis, thereby obtaining the knocking point position.
In the prior art, various information of a knocking point is obtained based on a vibration signal of the knocking point, and knocking a position may lead to a plurality of vibration signals.
Disclosure of Invention
The invention provides a method, a device, equipment and a storage medium for positioning a knocking point, which are used for solving the problem that in the prior art, the knocking point can be directly positioned and calculated without judging whether the knocking point can be combined, so that the positioning accuracy of the knocking point is lower.
The first aspect of the present invention provides a method for positioning a tapping point, including: obtaining vibration signals on an optical fiber to obtain vibration data, and identifying abnormal points corresponding to each vibration signal in the vibration data; calculating a local frequency domain accumulated value of each frame signal in each vibration signal; determining a first threshold value and a second threshold value corresponding to each vibration signal; comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with the first threshold value and the second threshold value respectively; extracting a target vibration signal with the continuous frame number which meets the requirement smaller than a preset frame number from a comparison result, and determining a target abnormal point corresponding to the target vibration signal; judging whether the reasonable knocking time interval times of the target abnormal points are not smaller than preset times or not; if the reasonable knocking time interval times of the target abnormal points are not less than the preset times, determining the target abnormal points as knocking points; combining the knocking points meeting the combination conditions to obtain new vibration data; and carrying out positioning calculation on the knocking point corresponding to the new vibration data.
In a possible implementation manner, the merging the tapping points meeting the merging condition to obtain new vibration data includes: extracting vibration signal characteristics of vibration signals corresponding to the knocking points; judging the characteristic similarity based on the vibration signal characteristics of the vibration signals corresponding to the knocking points; if the vibration signals corresponding to the vibration signal features with the feature similarity not smaller than the preset similarity are continuous vibration signals, the corresponding knocking points are combined, and new vibration data are obtained.
In a possible implementation manner, after merging the tapping points meeting the merging condition to obtain new vibration data, before performing positioning calculation on the tapping points corresponding to the new vibration data, the method further includes: extracting a position set corresponding to the combined knocking points; extracting a starting position and an ending position in the position set; and calculating the disc remaining length corresponding to the knocking point based on the starting position and the ending position, and recording.
In a possible implementation manner, the positioning calculation of the tapping point corresponding to the new vibration data includes: determining a target distance along the optical cable corresponding to the knocking point based on the new vibration data; inquiring a target disc reserved length existing on the target distance from a disc reserved record table; and calculating based on the target distance and the target disc remaining length to obtain the linear distance of the knocking point.
In a possible implementation manner, the calculating the local frequency domain accumulated value of each frame signal in each vibration signal includes: extracting each frame signal in each vibration signal; converting each frame signal in each vibration signal from a time domain signal to a frequency domain signal; and calculating the local frequency domain accumulated value of each frame signal in each vibration signal according to each frame signal in each vibration signal subjected to type conversion.
In a possible implementation manner, the comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with the first threshold value and the second threshold value respectively includes: determining a current frame signal and a previous frame signal of the current frame signal in each vibration signal, comparing the local frequency domain accumulated value of the current frame signal and the local frequency domain accumulated value of the previous frame signal of the current frame signal with the first threshold value and the second threshold value respectively, and judging whether the current frame signal meets the requirement or not based on a comparison result; determining the next frame signal of the current frame signal in each vibration signal, comparing the local frequency domain accumulated value of the next frame signal of the current frame signal and the local frequency domain accumulated value of the current frame signal with the first threshold value and the second threshold value respectively, judging whether the next frame signal of the current frame signal meets the requirements or not based on the comparison result, and the like until the judgment of each frame signal in each vibration signal is completed.
In a possible implementation manner, the determining whether the number of reasonable striking time intervals of the target abnormal point is not less than a preset number of times includes: calculating a knocking time interval between every two adjacent target vibration signals of the target abnormal point; classifying the knocking time intervals, and calculating the number of the knocking time intervals; and determining the number of reasonable knocking time intervals based on the number of various knocking time intervals, and judging whether the number of the reasonable knocking time intervals is not smaller than the preset number.
The second aspect of the present invention provides a device for positioning a tapping point, including: the first processing module is used for acquiring vibration signals on the optical fiber, obtaining vibration data and identifying abnormal points corresponding to the vibration signals in the vibration data; the calculation module calculates the local frequency domain accumulated value of each frame signal in each vibration signal; the first determining module is used for determining a first threshold value and a second threshold value corresponding to each vibration signal; the comparison module is used for comparing the local frequency domain accumulated values of two adjacent frame signals in each vibration signal with the first threshold value and the second threshold value respectively; the second processing module is used for extracting target vibration signals with the continuous frame number which meets the requirement in the comparison result being smaller than the preset frame number, and determining target abnormal points corresponding to the target vibration signals; the judging module is used for judging whether the reasonable knocking time interval times of the target abnormal point are not less than preset times or not; the second determining module is used for determining the target abnormal point as a knocking point if the reasonable knocking time interval times of the target abnormal point are not smaller than the preset times; the merging module is used for merging the knocking points meeting the merging conditions to obtain new vibration data; and the positioning module is used for performing positioning calculation on the knocking point corresponding to the new vibration data.
In a possible embodiment, the merging module is specifically configured to: extracting vibration signal characteristics of vibration signals corresponding to the knocking points; judging the characteristic similarity based on the vibration signal characteristics of the vibration signals corresponding to the knocking points; if the vibration signals corresponding to the vibration signal features with the feature similarity not smaller than the preset similarity are continuous vibration signals, the corresponding knocking points are combined, and new vibration data are obtained.
In a possible embodiment, the positioning device of the striking point further includes: the first extraction module is used for extracting a position set corresponding to the combined knocking points; the second extraction module is used for extracting a starting position and an ending position in the position set; and the recording module is used for calculating the disc remaining length corresponding to the knocking point based on the starting position and the ending position and recording the disc remaining length.
In a possible embodiment, the positioning module is specifically configured to: determining a target distance along the optical cable corresponding to the knocking point based on the new signal curve graph; inquiring a target disc reserved length existing on the target distance from a disc reserved record table; and calculating based on the target distance and the target disc remaining length to obtain the linear distance of the knocking point.
In a possible embodiment, the computing module is specifically configured to: extracting each frame signal in each vibration signal; converting each frame signal in each vibration signal from a time domain signal to a frequency domain signal; and calculating the local frequency domain accumulated value of each frame signal in each vibration signal according to each frame signal in each vibration signal subjected to type conversion.
In a possible embodiment, the comparison module is specifically configured to: determining a current frame signal and a previous frame signal of the current frame signal in each vibration signal, comparing the local frequency domain accumulated value of the current frame signal and the local frequency domain accumulated value of the previous frame signal of the current frame signal with the first threshold value and the second threshold value respectively, and judging whether the current frame signal meets the requirement or not based on a comparison result; determining the next frame signal of the current frame signal in each vibration signal, comparing the local frequency domain accumulated value of the next frame signal of the current frame signal and the local frequency domain accumulated value of the current frame signal with the first threshold value and the second threshold value respectively, judging whether the next frame signal of the current frame signal meets the requirements or not based on the comparison result, and the like until the judgment of each frame signal in each vibration signal is completed.
In a possible implementation manner, the judging module is specifically configured to: calculating a knocking time interval between every two adjacent target vibration signals of the target abnormal point; classifying the knocking time intervals, and calculating the number of the knocking time intervals; and determining the number of reasonable knocking time intervals based on the number of various knocking time intervals, and judging whether the number of the reasonable knocking time intervals is not smaller than the preset number.
A third aspect of the present invention provides a tapping point positioning apparatus, comprising: a memory and at least one processor, the memory having instructions stored therein; the at least one processor invokes the instructions in the memory to cause the pointing device to perform the above-described method of pointing a tapping point.
A fourth aspect of the present invention provides a computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the above-described method of locating a tapping point.
In the technical scheme provided by the invention, vibration signals on the optical fiber are obtained to obtain vibration data, and abnormal points corresponding to the vibration signals in the vibration data are identified; calculating a local frequency domain accumulated value of each frame signal in each vibration signal; determining a first threshold value and a second threshold value corresponding to each vibration signal; comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with the first threshold value and the second threshold value respectively; extracting a target vibration signal with the continuous frame number which meets the requirement smaller than a preset frame number from a comparison result, and determining a target abnormal point corresponding to the target vibration signal; judging whether the reasonable knocking time interval times of the target abnormal points are not smaller than preset times or not; if the reasonable knocking time interval times of the target abnormal points are not less than the preset times, determining the target abnormal points as knocking points; combining the knocking points meeting the combination conditions to obtain new vibration data; and carrying out positioning calculation on the knocking point corresponding to the new vibration data. In the embodiment of the invention, the knocking points which are in accordance with the merging conditions are merged by screening the knocking points which belong to the manual knocking from the abnormal points which are corresponding to the vibration signals and are identified in the vibration data, so that new vibration data are obtained, and positioning calculation is performed based on the knocking points which are corresponding to the new vibration data, thereby improving the accuracy of positioning the knocking points.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a method for locating a tapping point according to the present invention;
FIG. 2 is a schematic diagram of a detection system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a vibration matrix of a tapping point according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another embodiment of a method for locating a tapping point according to the present invention;
FIG. 5 is a schematic view of an embodiment of a positioning device according to an embodiment of the present invention;
FIG. 6 is a schematic view of another embodiment of a positioning device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an embodiment of a positioning device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method, a device, equipment and a storage medium for positioning a knocking point, which are used for combining knocking points which are combined to meet the condition, so that the positioning calculation of the knocking point is performed, and the accuracy of positioning the knocking point is improved.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
It is to be understood that the execution body of the present invention may be a positioning device, and may also be a terminal or a server, which is not limited herein. The embodiment of the invention is described by taking a server as an execution main body as an example.
For easy understanding, the following describes a specific flow of an embodiment of the present invention, referring to fig. 1, and one embodiment of a method for positioning a tapping point in an embodiment of the present invention includes:
101. obtaining vibration signals on the optical fiber to obtain vibration data, and identifying abnormal points corresponding to the vibration signals in the vibration data;
in the embodiment, a detection system shown in fig. 2 is adopted to acquire a vibration signal, and continuous light emitted by a narrow linewidth laser is modulated by a pulse modulator Cheng Maichong and amplified by an optical amplifier, and then enters a sensing optical fiber from a circulator; the backward Rayleigh scattered light generated in the light pulse transmission process returns to the optical circulator, the photoelectric detector receives the backward Rayleigh scattered light to generate an electric signal, the data acquisition card acquires and converts the electric signal into a digital signal and transmits the digital signal to the rear end for processing and displaying, and the point where the phase of vibration data changes obviously is determined as an abnormal point of vibration signal abnormality.
102. Calculating a local frequency domain accumulated value of each frame signal in each vibration signal;
Extracting each frame signal in each vibration signal; converting each frame signal in each vibration signal from a time domain signal to a frequency domain signal; and calculating the local frequency domain accumulated value of each frame signal in each vibration signal according to each frame signal in each vibration signal subjected to type conversion.
The local frequency domain accumulated value for each frame signal is calculated as: converting each frame signal from a time domain signal to a frequency domain signal according to a Fourier transform formula, extracting frequency components of each frame signal, determining vibration values of the frequency components of each frame signal, and accumulating frame amplitudes of all frequency components of each frame signal to obtain local frequency domain accumulated values of each frame signal.
103. Determining a first threshold value and a second threshold value corresponding to each vibration signal;
traversing the local frequency domain accumulated values corresponding to the vibration signals to obtain a target local frequency domain accumulated value with the largest median value of the local frequency domain accumulated values of the vibration signals, subtracting a preset first value from each target local frequency domain accumulated value to obtain a first threshold value corresponding to the vibration signals, subtracting a preset second value from each target local frequency domain accumulated value to obtain a second threshold value corresponding to the vibration signals, wherein the preset first value is smaller than the preset second value, so that the first threshold value is larger than the second threshold value, for example, the preset first value is set to be 2, the second preset value is set to be 7, and the first threshold value=the target local frequency domain accumulated value-2, and the second threshold value=the target local frequency domain accumulated value-7.
104. Comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with a first threshold value and a second threshold value respectively;
and determining the priority order of each frame signal in each vibration signal according to the time sequence, and sequentially extracting the local frequency domain accumulated value of two adjacent frame signals in each vibration signal based on the priority order of each frame signal in each vibration signal.
For example, the first vibration signal includes a first frame signal, a second frame signal, and a third frame signal, where the priority of the first frame signal is greater than the priority of the second frame signal is greater than the priority of the third frame signal, then the first local frequency-domain accumulated value of the first frame signal, the second local frequency-domain accumulated value of the second frame signal, and the third local frequency-domain accumulated value of the third frame signal are preferentially determined, the first local frequency-domain accumulated value and the second local frequency-domain accumulated value are respectively compared with a first threshold, the first local frequency-domain accumulated value and the second local frequency-domain accumulated value are respectively compared with a second threshold, and after the comparison, the second frequency-domain accumulated value and the third frequency-domain accumulated value are respectively compared with the first threshold, and the second local frequency-domain accumulated value and the third local frequency-domain accumulated value are respectively compared with the second threshold.
The determination mode of two adjacent frame signals is as follows: the current frame signal is determined first, and then the previous frame signal of the current frame signal is determined. And if the local frequency domain accumulated value of the current frame signal is not smaller than the first threshold value and the second threshold value and the local frequency domain accumulated value of the previous frame signal of the current frame signal is smaller than the first threshold value and the second threshold value, determining that the current frame signal meets the requirement.
105. Extracting target vibration signals with continuous frame numbers which meet the requirements and are smaller than the preset frame numbers from the comparison results, and determining target abnormal points corresponding to the target vibration signals;
based on the comparison result, the frame number of the signal frames meeting the requirements in each vibration signal is extracted, whether the signal frames meeting the requirements are continuous frames or not is judged, the continuous frame number corresponding to the continuous frames in each vibration signal is recorded, the continuous frame number of each vibration signal is compared with the preset frame number, the vibration signal with the continuous frame number smaller than the preset frame number is determined as a target vibration signal, and abnormal points corresponding to the target vibration signal are inquired to obtain target abnormal points.
106. Judging whether the reasonable knocking time interval times of the target abnormal points are not smaller than preset times or not;
the target abnormal point comprises at least one target vibration signal, the knocking time interval of two adjacent target vibration signals in the target abnormal point is determined, the same number of the knocking time intervals is recorded, quantity information is obtained, the target knocking time interval corresponding to the largest value in the quantity information is determined, if the target knocking time interval is in a reasonable range, the target knocking time interval is determined to be a reasonable knocking time interval, the value corresponding to the reasonable knocking time interval is determined to be the reasonable knocking time interval times, the preset times are subtracted from the reasonable knocking time interval times to obtain a calculation result, if the calculation result is larger than zero, the reasonable knocking time interval times of the target abnormal point are determined to be not smaller than the preset times, and if the calculation result is smaller than zero, the reasonable knocking time interval times of the target abnormal point are determined to be smaller than the preset times.
107. If the reasonable knocking time interval times of the target abnormal points are not less than the preset times, determining the target abnormal points as knocking points;
108. combining the knocking points meeting the combination conditions to obtain new vibration data;
in the arrangement of the optical cables, in order to facilitate future transportation and expansion, a certain length of optical cable is reserved at a reasonable position, and the reserved optical cable is coiled for placement, which is called coiling. When the disc remains at the knocking point, similar vibration signal characteristics appear at the continuous position, so that the knocking point is required to be compared with the vibration signal characteristics, and the knocking point with similar vibration signal characteristics and continuous knocking point is combined to obtain new vibration data.
In the process of identifying the knocking point, the knocking point can be analyzed according to other types of diagrams, a vibration matrix of the knocking point is shown in fig. 3, and if the plurality of knocking points have similar vibration signal characteristics, the plurality of knocking points are combined.
For example, there is a similar vibration signal characteristic and the consecutive tapping points include a first tapping point, a second tapping point, a third tapping point, a fourth tapping point, and a fifth tapping point, wherein the optical cable of the first tapping point is 208m in distance along the line, the optical cable of the second tapping point is 209m in distance along the line, the optical cable of the third tapping point is 210m in distance along the line, the optical cable of the fourth tapping point is 211m in distance along the line, the optical cable of the fifth tapping point is 212m in distance along the line, and since the optical cable is 208m < 209m < 210m < 211m < 212m, the first tapping point, the second tapping point, the third tapping point, the fourth tapping point, and the fifth tapping point are combined, and the first tapping point is taken as the combined tapping point.
109. And positioning and calculating the knocking point corresponding to the new vibration data.
The primary position of the knocking point is determined based on the new vibration data, the primary position is the position of the optical cable along the line corresponding to the knocking point, and due to the fact that the optical cable is coiled, the coiled position on the distance needs to be subtracted from the optical cable along the line distance of the primary position, the ground distance of the knocking point is further obtained, and the coiled position can be inquired in a coiled record table.
For example, the preliminary location is 540m along the cable, and the inquiry is made in the onlay record table to obtain the following steps within 540m along the cable: 5m of optical cable is reserved at 100m, 10m of optical cable is reserved at 200m, 8m of optical cable is reserved at 300 m, 10m of optical cable is reserved at 400m, and 5m of optical cable is reserved at 500m, so that the ground distance to the knocking point is as follows: 540m-5m-10m-8m-10m-5 m=502 m.
In the technical scheme provided by the invention, vibration signals on the optical fiber are obtained, vibration data are obtained, and abnormal points corresponding to the vibration signals in the vibration data are identified; calculating a local frequency domain accumulated value of each frame signal in each vibration signal; determining a first threshold value and a second threshold value corresponding to each vibration signal; comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with a first threshold value and a second threshold value respectively; extracting target vibration signals with continuous frame numbers which meet the requirements and are smaller than the preset frame numbers from the comparison results, and determining target abnormal points corresponding to the target vibration signals; judging whether the reasonable knocking time interval times of the target abnormal points are not smaller than preset times or not; if the reasonable knocking time interval times of the target abnormal points are not less than the preset times, determining the target abnormal points as knocking points; combining the knocking points meeting the combination conditions to obtain new vibration data; and positioning and calculating the knocking point corresponding to the new vibration data. In the embodiment of the invention, the knocking points which are in accordance with the merging conditions are merged by screening the knocking points which belong to the manual knocking from the abnormal points which correspond to the vibration signals identified in the vibration data, so that new vibration data are obtained, and positioning calculation is performed based on the knocking points which correspond to the new vibration data, so that the accuracy of positioning the knocking points is improved.
Referring to fig. 4, another embodiment of a method for positioning a tapping point according to an embodiment of the present invention includes:
401. obtaining vibration signals on the optical fiber to obtain vibration data, and identifying abnormal points corresponding to the vibration signals in the vibration data;
402. calculating a local frequency domain accumulated value of each frame signal in each vibration signal;
403. determining a first threshold value and a second threshold value corresponding to each vibration signal;
the execution of steps 401-403 is similar to the execution of steps 101-103 described above, and will not be described in detail here.
404. Comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with a first threshold value and a second threshold value respectively;
determining a current frame signal and a previous frame signal of the current frame signal in each vibration signal, comparing the local frequency domain accumulated value of the current frame signal and the local frequency domain accumulated value of the previous frame signal of the current frame signal with a first threshold value and a second threshold value respectively, and judging whether the current frame signal meets the requirement or not based on a comparison result; determining the next frame signal of the current frame signal in each vibration signal, comparing the local frequency domain accumulated value of the next frame signal of the current frame signal and the local frequency domain accumulated value of the current frame signal with a first threshold value and a second threshold value respectively, judging whether the next frame signal of the current frame signal meets the requirements or not based on the comparison result, and the like until the judgment of each frame signal in each vibration signal is completed.
Judging whether the local frequency domain accumulated value of the current frame signal is not less than a first threshold value or not and judging whether the local frequency domain accumulated value of the previous frame signal of the current frame signal is less than the first threshold value or not, if the local frequency domain accumulated value of the current frame signal is not less than the first threshold value and the local frequency domain accumulated value of the previous frame signal of the current frame signal is less than the first threshold value, determining that the current frame signal meets a first condition; judging whether the local frequency domain accumulated value of the current frame signal is not less than a second threshold value and judging whether the local frequency domain accumulated value of the next frame signal of the current frame signal is less than the second threshold value, if the local frequency domain accumulated value of the current frame signal is not less than the second threshold value and the local frequency domain accumulated value of the next frame signal of the current frame signal is less than the second threshold value, determining that the current frame signal meets a second condition; if the current frame signal meets the first condition and the second condition, determining that the current frame signal meets the requirement, and continuously judging whether the next frame signal of the current frame signal meets the requirement or not based on the judging logic until the judgment of each frame signal in each vibration signal is completed. And recording each frame signal meeting the requirements in each vibration signal.
405. Extracting target vibration signals with continuous frame numbers which meet the requirements and are smaller than the preset frame numbers from the comparison results, and determining target abnormal points corresponding to the target vibration signals;
For example, if the preset frame number is 4 frames, the comparison result is: the number of frames meeting the requirements in the first vibration signal is 2 frames, the number of frames meeting the requirements in the second vibration signal is 4 frames, the number of frames meeting the requirements in the third vibration signal is 4 frames, if the 2 frames in the first vibration signal are continuous signal frames, the 4 frames in the third vibration signal are continuous signal frames, the 2 frames in the 4 frames in the second vibration signal are continuous signal frames, the 2 frames meeting the requirements in the first vibration signal are determined to be 2 frames, the 2 frames in the second vibration signal are determined to be 2 frames, the 4 frames in the third vibration signal are determined to be 4 frames, the 2 frames in the first vibration signal and the 2 frames in the second vibration signal are determined to be less than the preset frame number, the 4 frames in the third vibration signal are determined to be the target vibration signal, the 4 frames in the continuous frame number of the third vibration signal are determined to be not the target vibration signal, the abnormal points corresponding to the first vibration signal and the second vibration signal are inquired, and the abnormal points corresponding to the target abnormal points corresponding to the first vibration signal and the second vibration signal are obtained.
406. Judging whether the reasonable knocking time interval times of the target abnormal points are not smaller than preset times or not;
calculating the knocking time interval between every two adjacent target vibration signals of the target abnormal point; classifying the knocking time intervals, and calculating the number of the knocking time intervals; and determining the number of reasonable knocking time intervals based on the number of various knocking time intervals, and judging whether the number of the reasonable knocking time intervals is not smaller than the preset number.
For example, if the preset number of times is 3, the first target abnormal point includes a first target vibration signal, a second target vibration signal, a third target vibration signal, a fourth target vibration signal and a fifth target vibration signal, where the first target vibration signal and the second target vibration signal are adjacent vibration signals, the second target vibration signal and the third target vibration signal are adjacent vibration signals, the third target vibration signal and the fourth target vibration signal are adjacent vibration signals, and the fourth target vibration signal and the fifth target vibration signal are adjacent vibration signals; calculating a knocking time interval between every two adjacent target vibration signals, if the knocking time interval between the first target vibration signal and the second target vibration signal is a, the knocking time interval between the second target vibration signal and the third target vibration signal is b, the knocking time interval between the third target vibration signal and the fourth target vibration signal is c, the knocking time interval between the fourth target vibration signal and the fifth target vibration signal is d, if the knocking time interval is classified, a first category and a second category are obtained, the first category comprises the knocking time interval a, the second category comprises the knocking time intervals b, c and d, the size of the quantity contained in the first category and the second category is judged, if the knocking time interval of the second category is within a reasonable range, if the knocking time interval of the second category is 3, the reasonable time interval is 3, and if the preset knocking time interval is not equal to the reasonable time interval is less than the reasonable time interval.
407. If the reasonable knocking time interval times of the target abnormal points are not less than the preset times, determining the target abnormal points as knocking points;
408. combining the knocking points meeting the combination conditions to obtain new vibration data;
extracting vibration signal characteristics of the target vibration signals corresponding to the knocking points; judging the characteristic similarity based on the vibration signal characteristics of the target vibration signals corresponding to the knocking points; if the target vibration signal corresponding to the vibration signal characteristics with the characteristic similarity not smaller than the preset similarity is a continuous vibration signal, combining the corresponding knocking points to obtain new vibration data.
The vibration signal features include an amplitude, a frequency, a phase and a duration, the vibration signal features are compared to determine feature similarities between the vibration signal features, for example, the vibration signal features include a first vibration signal feature of a first tapping point, a second vibration signal feature of a second tapping point, and a third vibration signal feature of a third tapping point, the first vibration signal feature includes a first amplitude, a first frequency, a first phase and a first duration, the second vibration signal feature includes a second amplitude, a second frequency, a second phase and a second duration, and the third vibration signal feature includes a third amplitude, a third frequency table, a point phase and a third duration; comparing the first amplitude with the second amplitude to obtain a first similarity, comparing the first frequency with the second frequency to obtain a second similarity, comparing the first phase with the second phase to obtain a third similarity, comparing the first duration with the second duration to obtain a fourth similarity, determining a first characteristic similarity between the first vibration signal characteristic and the second vibration signal characteristic based on the first similarity, the second similarity, the third similarity and the fourth similarity, comparing the second amplitude with the third amplitude to obtain a fifth similarity, comparing the second frequency with the third frequency to obtain a sixth similarity, comparing the second phase with the third phase to obtain a seventh similarity, and comparing the second duration with the third duration to obtain an eighth similarity; determining a second feature similarity between the second vibration signal feature and the third vibration signal feature based on the fifth similarity, the sixth similarity, the seventh similarity, and the eighth similarity;
If the first feature similarity is not smaller than the preset similarity, the target vibration signal corresponding to the first vibration signal feature and the target vibration signal corresponding to the second vibration signal feature are continuous vibration signals, the second feature similarity is not smaller than the preset similarity, the target vibration signal corresponding to the second vibration signal feature and the target vibration signal corresponding to the third vibration signal feature are continuous vibration signals, the first knocking point, the second knocking point and the third knocking point are determined to be continuous similar knocking points, and the first knocking point, the second knocking point and the third knocking point are combined.
409. Extracting a position set corresponding to the combined knocking points;
if the merged tapping points comprise a fourth tapping point, a fifth tapping point, a sixth tapping point, a seventh tapping point, an eighth tapping point and a ninth tapping point, determining positions of the fourth tapping point, the fifth tapping point, the sixth tapping point, the seventh tapping point, the eighth tapping point and the ninth tapping point in the optical cable to obtain a first distance of the fourth tapping point, a second distance of the fifth tapping point, a third distance of the sixth tapping point, a fourth distance of the seventh tapping point, a fifth distance of the eighth tapping point and a sixth distance of the ninth tapping point, wherein the first distance < the second distance < the third distance < the fourth distance < the fifth distance < the sixth distance, and the position set of the tapping points is [ the first distance, the second distance, the third distance, the fourth distance, the fifth distance and the sixth distance ].
410. Extracting a starting position and an ending position in the position set;
the length of the disc corresponding to the knocking point can be calculated by the position set, and the data in the position set is continuous data, so that the position corresponding to the element ordered at the first position in the position set is taken as the initial position, and the position corresponding to the element ordered at the last position in the position set is taken as the final position.
If the position set of the tapping point is [86 87 8890919293949596979899 102], each element in the set represents the distance between each position on the optical cable corresponding to the tapping point and the optical cable along the optical cable, and the unit is meter, since 86 is the element with the smallest value in the set and 102 is the element with the largest value in the set, the position corresponding to the distance of 86 meters is taken as the starting position of the tapping point, and the position corresponding to the distance of 102 meters is taken as the end position of the tapping point.
411. Calculating the disc remaining length corresponding to the knocking point based on the starting position and the end position, and recording;
the distance corresponding to the end position is subtracted from the distance corresponding to the initial position to obtain the disc remaining length of the knocking point, in order to enable the calculated disc remaining length to be more accurate, a target threshold value can be obtained through presetting or calculation, the target threshold value is the influence caused by the test pulse width, the distance corresponding to the end position in the position set is subtracted from the distance corresponding to the initial position, and then the target threshold value is subtracted to obtain the disc remaining length of the knocking point. The disc-reserved length of the hit point is recorded in a disc-reserved recording table. The calculation error of the disc reserved length is reduced through the target threshold value, and the accuracy of the disc reserved length is improved.
412. And positioning and calculating the knocking point corresponding to the new vibration data.
Determining a target distance along the optical cable corresponding to the knocking point based on the new vibration data; inquiring a target disc reserved length existing on a target distance from a disc reserved record table; and calculating based on the target distance and the target disc remaining length to obtain the linear distance of the knocking point.
In the technical scheme provided by the invention, vibration signals on the optical fiber are obtained, vibration data are obtained, and abnormal points corresponding to the vibration signals in the vibration data are identified; calculating a local frequency domain accumulated value of each frame signal in each vibration signal; determining a first threshold value and a second threshold value corresponding to each vibration signal; comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with a first threshold value and a second threshold value respectively; extracting target vibration signals with continuous frame numbers which meet the requirements and are smaller than the preset frame numbers from the comparison results, and determining target abnormal points corresponding to the target vibration signals; judging whether the reasonable knocking time interval times of the target abnormal points are not smaller than preset times or not; if the reasonable knocking time interval times of the target abnormal points are not less than the preset times, determining the target abnormal points as knocking points; combining the knocking points meeting the combination conditions to obtain new vibration data; extracting a position set corresponding to the combined knocking points; calculating the disc remaining length corresponding to the knocking point based on the starting position and the end position, and recording; extracting a starting position and an ending position in the position set; and positioning and calculating the knocking point corresponding to the new vibration data. In the embodiment of the invention, the knocking points which are in accordance with the merging conditions are merged by screening the knocking points which belong to the manual knocking from the abnormal points which correspond to the vibration signals identified in the vibration data, so that new vibration data are obtained, and positioning calculation is performed based on the knocking points which correspond to the new vibration data, so that the accuracy of positioning the knocking points is improved.
The foregoing describes a method for positioning a tapping point in an embodiment of the present invention, and the following describes a positioning device in an embodiment of the present invention, referring to fig. 5, an embodiment of the positioning device in an embodiment of the present invention includes:
the first processing module 501 is configured to obtain vibration signals on an optical fiber, obtain vibration data, and identify abnormal points corresponding to each vibration signal in the vibration data;
a calculation module 502 for calculating a local frequency domain accumulated value of each frame signal in each vibration signal;
a first determining module 503, configured to determine a first threshold value and a second threshold value corresponding to each vibration signal;
a comparison module 504, configured to compare the local frequency domain accumulated values of two adjacent frame signals in each vibration signal with a first threshold and a second threshold respectively;
the second processing module 505 is configured to extract a target vibration signal with a continuous frame number that meets the requirement in the comparison result being less than a preset frame number, and determine a target abnormal point corresponding to the target vibration signal;
a judging module 506, configured to judge whether the number of reasonable tapping time intervals of the target outlier is not less than a preset number;
the second determining module 507 is configured to determine that the target outlier is a tapping point if the number of reasonable tapping time intervals of the target outlier is not less than a preset number;
The merging module 508 is configured to merge tapping points that meet merging conditions to obtain new vibration data;
the positioning module 509 is configured to perform positioning calculation on the tapping point corresponding to the new vibration data.
In the technical scheme provided by the invention, vibration signals on the optical fiber are obtained, vibration data are obtained, and abnormal points corresponding to the vibration signals in the vibration data are identified; calculating a local frequency domain accumulated value of each frame signal in each vibration signal; determining a first threshold value and a second threshold value corresponding to each vibration signal; comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with a first threshold value and a second threshold value respectively; extracting target vibration signals with continuous frame numbers which meet the requirements and are smaller than the preset frame numbers from the comparison results, and determining target abnormal points corresponding to the target vibration signals; judging whether the reasonable knocking time interval times of the target abnormal points are not smaller than preset times or not; if the reasonable knocking time interval times of the target abnormal points are not less than the preset times, determining the target abnormal points as knocking points; combining the knocking points meeting the combination conditions to obtain new vibration data; and positioning and calculating the knocking point corresponding to the new vibration data. In the embodiment of the invention, the knocking points which are in accordance with the merging conditions are merged by screening the knocking points which belong to the manual knocking from the abnormal points which correspond to the vibration signals identified in the vibration data, so that new vibration data are obtained, and positioning calculation is performed based on the knocking points which correspond to the new vibration data, so that the accuracy of positioning the knocking points is improved.
Referring to fig. 6, another embodiment of the positioning device according to the present invention includes:
the first processing module 501 is configured to obtain vibration signals on an optical fiber, obtain vibration data, and identify abnormal points corresponding to each vibration signal in the vibration data;
a calculation module 502 for calculating a local frequency domain accumulated value of each frame signal in each vibration signal;
a first determining module 503, configured to determine a first threshold value and a second threshold value corresponding to each vibration signal;
a comparison module 504, configured to compare the local frequency domain accumulated values of two adjacent frame signals in each vibration signal with a first threshold and a second threshold respectively;
the second processing module 505 is configured to extract a target vibration signal with a continuous frame number that meets the requirement in the comparison result being less than a preset frame number, and determine a target abnormal point corresponding to the target vibration signal;
a judging module 506, configured to judge whether the number of reasonable tapping time intervals of the target outlier is not less than a preset number;
the second determining module 507 is configured to determine that the target outlier is a tapping point if the number of reasonable tapping time intervals of the target outlier is not less than a preset number;
the merging module 508 is configured to merge tapping points that meet merging conditions to obtain new vibration data;
The positioning module 509 is configured to perform positioning calculation on the tapping point corresponding to the new vibration data.
Alternatively, the merging module 508 may be specifically configured to:
extracting vibration signal characteristics of vibration signals corresponding to the knocking points; judging the characteristic similarity based on the vibration signal characteristics of the vibration signals corresponding to the knocking points; if the vibration signals corresponding to the vibration signal features with the feature similarity not smaller than the preset similarity are continuous vibration signals, the corresponding knocking points are combined, and new vibration data are obtained.
Optionally, the positioning device of the tapping point further includes:
a first extraction module 510, configured to extract a position set corresponding to the tapping points that complete merging;
a second extraction module 511 for extracting a start position and an end position in the position set;
the recording module 512 is configured to calculate a disc remaining length corresponding to the tapping point based on the start position and the end position, and record the disc remaining length.
Alternatively, the positioning module 509 may be specifically configured to:
determining a target distance along the optical cable corresponding to the knocking point based on the new signal curve graph; inquiring a target disc reserved length existing on a target distance from a disc reserved record table; and calculating based on the target distance and the target disc remaining length to obtain the linear distance of the knocking point.
Alternatively, the computing module 502 may be specifically configured to:
extracting each frame signal in each vibration signal; converting each frame signal in each vibration signal from a time domain signal to a frequency domain signal; and calculating the local frequency domain accumulated value of each frame signal in each vibration signal according to each frame signal in each vibration signal subjected to type conversion.
Alternatively, the comparison module 504 may be specifically configured to:
determining a current frame signal and a previous frame signal of the current frame signal in each vibration signal, comparing the local frequency domain accumulated value of the current frame signal and the local frequency domain accumulated value of the previous frame signal of the current frame signal with a first threshold value and a second threshold value respectively, and judging whether the current frame signal meets the requirement or not based on a comparison result; determining the next frame signal of the current frame signal in each vibration signal, comparing the local frequency domain accumulated value of the next frame signal of the current frame signal and the local frequency domain accumulated value of the current frame signal with a first threshold value and a second threshold value respectively, judging whether the next frame signal of the current frame signal meets the requirements or not based on the comparison result, and the like until the judgment of each frame signal in each vibration signal is completed.
Alternatively, the determining module 506 may be specifically configured to:
Calculating the knocking time interval between every two adjacent target vibration signals of the target abnormal point; classifying the knocking time intervals, and calculating the number of the knocking time intervals; and determining the number of reasonable knocking time intervals based on the number of various knocking time intervals, and judging whether the number of the reasonable knocking time intervals is not smaller than the preset number.
In the technical scheme provided by the invention, vibration signals on the optical fiber are obtained, vibration data are obtained, and abnormal points corresponding to the vibration signals in the vibration data are identified; calculating a local frequency domain accumulated value of each frame signal in each vibration signal; determining a first threshold value and a second threshold value corresponding to each vibration signal; comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with a first threshold value and a second threshold value respectively; extracting target vibration signals with continuous frame numbers which meet the requirements and are smaller than the preset frame numbers from the comparison results, and determining target abnormal points corresponding to the target vibration signals; judging whether the reasonable knocking time interval times of the target abnormal points are not smaller than preset times or not; if the reasonable knocking time interval times of the target abnormal points are not less than the preset times, determining the target abnormal points as knocking points; combining the knocking points meeting the combination conditions to obtain new vibration data; extracting a position set corresponding to the combined knocking points; calculating the disc remaining length corresponding to the knocking point based on the starting position and the end position, and recording; extracting a starting position and an ending position in the position set; and positioning and calculating the knocking point corresponding to the new vibration data. In the embodiment of the invention, the knocking points which are in accordance with the merging conditions are merged by screening the knocking points which belong to the manual knocking from the abnormal points which correspond to the vibration signals identified in the vibration data, so that new vibration data are obtained, and positioning calculation is performed based on the knocking points which correspond to the new vibration data, so that the accuracy of positioning the knocking points is improved.
The positioning device in the embodiment of the present invention is described in detail above in terms of the modularized functional entity in fig. 5 and 6, and the positioning apparatus in the embodiment of the present invention is described in detail below in terms of hardware processing.
Fig. 7 is a schematic structural diagram of a positioning device according to an embodiment of the present invention, where the positioning device 900 may have a relatively large difference due to different configurations or performances, and may include one or more processors (central processing units, CPU) 710 (e.g., one or more processors) and a memory 720, and one or more storage media 730 (e.g., one or more mass storage devices) storing application programs 733 or data 732. Wherein memory 720 and storage medium 730 may be transitory or persistent. The program stored in the storage medium 730 may include one or more modules (not shown), each of which may include a series of instruction operations in the positioning device 700. Still further, the processor 710 may be configured to communicate with the storage medium 730 and execute a series of instruction operations in the storage medium 730 on the pointing device 700.
The pointing device 700 might also include one or more power supplies 740, one or more wired or wireless network interfaces 750, one or more input/output interfaces 760, and/or one or more operating systems 731, such as Windows Serve, mac OS X, unix, linux, freeBSD, or the like. It will be appreciated by those skilled in the art that the positioning device structure shown in fig. 7 is not limiting of the positioning device and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
The present invention also provides a positioning device, where the computer device includes a memory and a processor, where the memory stores computer readable instructions that, when executed by the processor, cause the processor to execute the steps of the method for positioning a tapping point in the foregoing embodiments.
The present invention also provides a computer readable storage medium, which may be a non-volatile computer readable storage medium, or a volatile computer readable storage medium, having stored therein instructions that, when executed on a computer, cause the computer to perform the steps of the method for locating a tapping point.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The method for positioning the knocking point is characterized by comprising the following steps:
obtaining vibration signals on an optical fiber to obtain vibration data, and identifying abnormal points corresponding to each vibration signal in the vibration data;
calculating a local frequency domain accumulated value of each frame signal in each vibration signal;
determining a first threshold value and a second threshold value corresponding to each vibration signal;
comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with the first threshold value and the second threshold value respectively;
extracting a target vibration signal with the continuous frame number which meets the requirement smaller than a preset frame number from a comparison result, and determining a target abnormal point corresponding to the target vibration signal;
Judging whether the reasonable knocking time interval times of the target abnormal points are not smaller than preset times or not;
if the reasonable knocking time interval times of the target abnormal points are not less than the preset times, determining the target abnormal points as knocking points;
combining the knocking points meeting the combination conditions to obtain new vibration data;
and carrying out positioning calculation on the knocking point corresponding to the new vibration data.
2. The method for positioning a tapping point according to claim 1, wherein the merging the tapping points meeting the merging condition to obtain new vibration data comprises:
extracting vibration signal characteristics of vibration signals corresponding to the knocking points;
judging the characteristic similarity based on the vibration signal characteristics of the vibration signals corresponding to the knocking points;
if the vibration signals corresponding to the vibration signal features with the feature similarity not smaller than the preset similarity are continuous vibration signals, the corresponding knocking points are combined, and new vibration data are obtained.
3. The method for locating a tapping point according to claim 2, further comprising, after merging tapping points meeting a merging condition to obtain new vibration data, before locating and calculating a tapping point corresponding to the new vibration data:
Extracting a position set corresponding to the combined knocking points;
extracting a starting position and an ending position in the position set;
and calculating the disc remaining length corresponding to the knocking point based on the starting position and the ending position, and recording.
4. The method for locating a tapping point according to claim 1, wherein the performing a locating calculation on the tapping point corresponding to the new vibration data includes:
determining a target distance along the optical cable corresponding to the knocking point based on the new vibration data;
inquiring a target disc reserved length existing on the target distance from a disc reserved record table;
and calculating based on the target distance and the target disc remaining length to obtain the linear distance of the knocking point.
5. The method for locating a tapping point according to claim 3, wherein said calculating a local frequency domain accumulated value of each frame signal in each vibration signal comprises:
extracting each frame signal in each vibration signal;
converting each frame signal in each vibration signal from a time domain signal to a frequency domain signal;
and calculating the local frequency domain accumulated value of each frame signal in each vibration signal according to each frame signal in each vibration signal subjected to type conversion.
6. The method of any one of claims 1 to 5, wherein comparing the local frequency domain accumulated values of two adjacent frames of signals in each vibration signal with the first threshold and the second threshold, respectively, comprises:
determining a current frame signal and a previous frame signal of the current frame signal in each vibration signal, comparing a local frequency domain accumulated value of the current frame signal and a local frequency domain accumulated value of the previous frame signal of the current frame signal with the first threshold value and the second threshold value respectively, and judging whether the current frame signal meets the requirement or not based on a comparison result;
determining the next frame signal of the current frame signal in each vibration signal, comparing the local frequency domain accumulated value of the next frame signal of the current frame signal and the local frequency domain accumulated value of the current frame signal with the first threshold value and the second threshold value respectively, judging whether the next frame signal of the current frame signal meets the requirements or not based on the comparison result, and the like until the judgment of each frame signal in each vibration signal is completed.
7. The method for locating a tapping point according to claim 6, wherein said determining whether the number of reasonable tapping time intervals of the target outlier is not less than a preset number of times comprises:
Calculating a knocking time interval between every two adjacent target vibration signals of the target abnormal point;
classifying the knocking time intervals, and calculating the number of the knocking time intervals;
and determining the number of reasonable knocking time intervals based on the number of various knocking time intervals, and judging whether the number of the reasonable knocking time intervals is not smaller than the preset number.
8. A device for locating a tapping point, the device comprising:
the first processing module is used for acquiring vibration signals on the optical fiber, obtaining vibration data and identifying abnormal points corresponding to the vibration signals in the vibration data;
the calculation module calculates the local frequency domain accumulated value of each frame signal in each vibration signal;
the first determining module is used for determining a first threshold value and a second threshold value corresponding to each vibration signal;
the comparison module is used for comparing the local frequency domain accumulated values of two adjacent frame signals in each vibration signal with the first threshold value and the second threshold value respectively;
the second processing module is used for extracting target vibration signals with the continuous frame number which meets the requirement in the comparison result being smaller than the preset frame number, and determining target abnormal points corresponding to the target vibration signals;
The judging module is used for judging whether the reasonable knocking time interval times of the target abnormal point are not less than preset times or not;
the second determining module is used for determining the target abnormal point as a knocking point if the reasonable knocking time interval times of the target abnormal point are not smaller than the preset times;
the merging module is used for merging the knocking points meeting the merging conditions to obtain new vibration data;
and the positioning module is used for performing positioning calculation on the knocking point corresponding to the new vibration data.
9. A tapping point positioning device, characterized in that the tapping point positioning device comprises: a memory and at least one processor, the memory having instructions stored therein;
the at least one processor invokes the instructions in the memory to cause the tapping point positioning device to perform the tapping point positioning method according to any one of claims 1-7.
10. A computer readable storage medium having instructions stored thereon, which when executed by a processor, implement a method of locating a tapping point according to any one of claims 1-7.
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