A method, system and device for monitoring slope of substation based on Beidou and optical fiber

Abstract

The present invention relates to the technical field of substation stability monitoring, and discloses a substation slope monitoring method, system and equipment based on Beidou and optical fiber. The present invention fixes a vertical pole and a MEMS optical fiber displacement sensor on the reference point of the optical fiber displacement monitoring point, installs a Beidou positioning device on the top of the vertical pole, drives a steel drill into the monitoring point, and connects the steel drill to the sensor through a steel wire; the sensor displacement data is converted into a displacement in the geographic direction according to the geometric angle formed between the steel drill and the Beidou monitoring reference, and the sensor displacement change value is corrected by the change value of the data measured by the Beidou positioning device in the same period relative to the initial coordinate of the horizontal displacement, and the obtained correction value is used as the final substation slope displacement change monitoring result. The present invention can overcome the defects of the existing substation slope displacement monitoring method based on MEMS optical fiber displacement sensor, such as inconsistent reference, difficult selection of stable reference points and chaotic data monitoring direction.

Description

Technical Field

[0001] The present invention relates to the technical field of substation stability monitoring, and in particular to a substation slope monitoring method, system and equipment based on Beidou and optical fiber. Background Art

[0002] In the geological disaster monitoring of substation slopes, it is generally necessary to conduct long-term monitoring of the surface displacement and internal displacement of the substation slopes.

[0003] With the development of MEMS (micro-electromechanical system) technology, MEMS fiber optic displacement sensors are used in related technologies to monitor the displacement of substation slopes. During the monitoring process, it is usually necessary to fix a steel bar on the fiber optic displacement monitoring point and determine or build a stable point in the slope soil as the reference point of the fiber optic displacement monitoring point.

[0004] In order to monitor the slope displacement data accurately and comprehensively, it is usually necessary to arrange multiple fiber optic displacement monitoring points. The way of arranging distributed fiber optic displacement monitoring points makes it impossible to use the same standard for the reference points of each fiber optic displacement monitoring point. The monitoring results of each fiber optic displacement monitoring point can only be the relative direction value of the location. In addition, due to the special soil conditions of the substation slope, the stability of the reference points of each fiber optic displacement monitoring point cannot be confirmed, which is not convenient for the subsequent management, analysis and early warning of the monitoring data. Summary of the invention

[0005] The present invention provides a substation slope monitoring method, system and equipment based on Beidou and optical fiber, which solves the technical problem that the existing substation slope displacement monitoring method based on MEMS optical fiber displacement sensor is inconvenient for subsequent management, analysis and early warning of monitoring data due to inconsistent benchmarks, difficulty in selecting stable benchmark points, and confusion in data monitoring direction.

[0006] A first aspect of the present invention provides a substation slope monitoring method based on Beidou and optical fiber, comprising:

[0007] Select a reference point of the optical fiber displacement monitoring point in the slope monitoring area of ​​the substation, fix a vertical pole and a MEMS optical fiber displacement sensor on the reference point, install a Beidou positioning device on the top of the vertical pole, drive a steel drill into the optical fiber displacement monitoring point, and connect the steel drill to the MEMS optical fiber displacement sensor through a steel wire;

[0008] The data processing device obtains the initial north coordinates and the initial east coordinates of the horizontal displacement of the reference point collected when the Beidou positioning device is turned on, takes the direction in which the steel wire extends from the reference point to the steel drill as the monitoring direction, and obtains the angle between the monitoring direction and the geographic north direction;

[0009] The data processing device uses the initial displacement data obtained by the MEMS optical fiber displacement sensor as the relative initial displacement of the monitoring direction, and converts the relative initial displacement into the initial displacement in the geographic north direction and the initial displacement in the geographic east direction according to the angle;

[0010] The data processing device converts the displacement data recorded by the MEMS optical fiber displacement sensor in a subsequent monitoring period to obtain a displacement in the geographic north direction and a displacement in the geographic east direction of the corresponding monitoring period, calculates a first change value of the displacement in the geographic north direction relative to the initial displacement in the geographic north direction, and calculates a second change value of the displacement in the geographic east direction relative to the initial displacement in the geographic east direction;

[0011] The data processing device obtains the horizontal displacement in the geographic north direction and the horizontal displacement in the geographic east direction collected by the Beidou positioning device in the corresponding monitoring period, and calculates a third change value of the horizontal displacement in the geographic north direction relative to the initial coordinate of the horizontal displacement in the north direction and a fourth change value of the horizontal displacement in the geographic east direction relative to the initial coordinate of the horizontal displacement in the east direction;

[0012] The data processing device corrects the first change value of the same monitoring period according to the obtained third change value, and corrects the second change value of the same monitoring period according to the obtained fourth change value, and uses the obtained corrected value as the substation slope displacement change monitoring result corresponding to the optical fiber displacement monitoring point.

[0013] According to an achievable manner of the first aspect of the present invention, converting the relative initial displacement into an initial displacement in a geographic north direction and an initial displacement in a geographic east direction according to the angle includes:

[0014] Displacement conversion is performed according to the following conversion formula:

[0015]

[0016] Where S1 OA is the relative initial displacement, S1 OX is the initial displacement in the geographic north direction obtained by converting the relative initial displacement, S1 OY is the initial displacement in the geographic east direction obtained by converting the relative initial displacement, and α is the angle.

[0017] According to an achievable manner of the first aspect of the present invention, the first change value in the same monitoring period is corrected according to the obtained third change value, and the second change value in the same monitoring period is corrected according to the obtained fourth change value, including:

[0018] Use the following correction formula for correction:

[0019]

[0020] In the formula, ΔS OX (i) is the first change value corresponding to the i-th monitoring period, ΔX(i) is the third change value corresponding to the i-th monitoring period, S OX (i) is the value of ΔS OX (i) The value obtained after correction; ΔS OY (j) is the second change value corresponding to the j-th monitoring period, ΔY(j) is the fourth change value corresponding to the j-th monitoring period, S OY (j) for ΔS OY (j) The value obtained after correction.

[0021] A second aspect of the present invention provides a substation slope monitoring system based on Beidou and optical fiber, comprising:

[0022] The monitoring device comprises a vertical pole, a MEMS optical fiber displacement sensor, a Beidou positioning device, a steel drill and a steel wire; the vertical pole and the MEMS optical fiber displacement sensor are fixed on a reference point of an optical fiber displacement monitoring point selected in a slope monitoring area of ​​a substation, the Beidou positioning device is installed on the top of the vertical pole, the steel drill is driven into the optical fiber displacement monitoring point, and the steel drill is connected to the MEMS optical fiber displacement sensor through the steel wire;

[0023] The data processing device is used to obtain the initial north coordinates and the initial east coordinates of the horizontal displacement of the reference point collected when the Beidou positioning device is turned on, and take the direction in which the steel wire extends from the reference point to the steel drill as the monitoring direction to obtain the angle between the monitoring direction and the geographic north direction; take the initial displacement data obtained by the MEMS optical fiber displacement sensor as the relative initial displacement of the monitoring direction, and convert the relative initial displacement into the initial displacement in the geographic north direction and the initial displacement in the geographic east direction according to the angle; convert the displacement data recorded by the MEMS optical fiber displacement sensor in the subsequent monitoring period to obtain the displacement in the geographic north direction and the displacement in the geographic east direction of the corresponding monitoring period, and calculate the displacement in the geographic north direction relative to the geographic north direction. A first change value of the initial displacement in the geographic north direction, and a second change value of the displacement in the geographic east direction relative to the initial displacement in the geographic east direction are calculated; the horizontal displacement in the geographic north direction and the horizontal displacement in the geographic east direction collected by the Beidou positioning device in the corresponding monitoring period are obtained, and a third change value of the horizontal displacement in the geographic north direction relative to the initial coordinate of the horizontal displacement in the north direction and a fourth change value of the horizontal displacement in the geographic east direction relative to the initial coordinate of the horizontal displacement in the east direction are calculated; and, according to the obtained third change value, the first change value of the same monitoring period is corrected, and according to the obtained fourth change value, the second change value of the same monitoring period is corrected, and the obtained corrected value is used as the substation slope displacement change monitoring result corresponding to the optical fiber displacement monitoring point.

[0024] According to an achievable manner of the second aspect of the present invention, a concrete platform is formed on the reference point by pouring concrete, and the vertical rod and the MEMS optical fiber displacement sensor are fixed on the concrete platform.

[0025] According to an achievable manner of the second aspect of the present invention, when the data processing device converts the relative initial displacement into an initial displacement in the geographic north direction and an initial displacement in the geographic east direction according to the angle, it is specifically used to:

[0026] Displacement conversion is performed according to the following conversion formula:

[0027]

[0028] Where S1 OA is the relative initial displacement, S1 OX is the initial displacement in the geographic north direction obtained by converting the relative initial displacement, S1 OY is the initial displacement in the geographic east direction obtained by converting the relative initial displacement, and α is the angle.

[0029] According to an achievable manner of the second aspect of the present invention, when the data processing device corrects the first change value of the same monitoring period according to the obtained third change value, and corrects the second change value of the same monitoring period according to the obtained fourth change value, it is specifically used to:

[0030] Use the following correction formula for correction:

[0031]

[0032] In the formula, ΔS OX (i) is the first change value corresponding to the i-th monitoring period, ΔX(i) is the third change value corresponding to the i-th monitoring period, S OX (i) is the value of ΔS OX (i) The value obtained after correction; ΔS OY (j) is the second change value corresponding to the j-th monitoring period, ΔY(j) is the fourth change value corresponding to the j-th monitoring period, S OY (j) for ΔS OY (j) The value obtained after correction.

[0033] A third aspect of the present invention provides a substation slope monitoring method based on Beidou and optical fiber, the method being executed by a data processing device, the data processing device being connected to a monitoring device, the monitoring device comprising a vertical pole, a MEMS optical fiber displacement sensor, a Beidou positioning device, a steel drill and a steel wire; the vertical pole and the MEMS optical fiber displacement sensor are fixed on a reference point of an optical fiber displacement monitoring point selected in a substation slope monitoring area, the Beidou positioning device is installed on the top of the vertical pole, the steel drill is driven into the optical fiber displacement monitoring point, and the steel drill is connected to the MEMS optical fiber displacement sensor through a steel wire;

[0034] The method comprises:

[0035] Obtain the initial north coordinates and the initial east coordinates of the horizontal displacement of the reference point collected when the Beidou positioning device is turned on, and take the direction in which the steel wire extends from the reference point to the steel drill as the monitoring direction, and obtain the angle between the monitoring direction and the geographic north direction;

[0036] Using the initial displacement data acquired by the MEMS optical fiber displacement sensor as the relative initial displacement in the monitoring direction, converting the relative initial displacement into an initial displacement in the geographic north direction and an initial displacement in the geographic east direction according to the angle;

[0037] Converting the displacement data recorded by the MEMS optical fiber displacement sensor in a subsequent monitoring period to obtain a displacement in the geographic north direction and a displacement in the geographic east direction of the corresponding monitoring period, calculating a first change value of the displacement in the geographic north direction relative to the initial displacement in the geographic north direction, and calculating a second change value of the displacement in the geographic east direction relative to the initial displacement in the geographic east direction;

[0038] Obtain the horizontal displacement in the geographic north direction and the horizontal displacement in the geographic east direction collected by the Beidou positioning device in the corresponding monitoring period, and calculate a third change value of the horizontal displacement in the geographic north direction relative to the initial coordinate of the horizontal displacement in the north direction and a fourth change value of the horizontal displacement in the geographic east direction relative to the initial coordinate of the horizontal displacement in the east direction;

[0039] The first change value of the same monitoring period is corrected according to the third change value obtained, and the second change value of the same monitoring period is corrected according to the fourth change value obtained, and the obtained corrected value is used as the substation slope displacement change monitoring result corresponding to the optical fiber displacement monitoring point.

[0040] A fourth aspect of the present invention provides a substation slope monitoring device based on Beidou and optical fiber, comprising:

[0041] A memory, used to store instructions; wherein the instructions are used to implement the substation slope monitoring method based on Beidou and optical fiber as described in the third aspect embodiment above;

[0042] A processor is used to execute instructions in the memory.

[0043] A fourth aspect of the present invention is a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the substation slope monitoring method based on Beidou and optical fiber as described in the embodiment of the third aspect above is implemented.

[0044] It can be seen from the above technical solutions that the present invention has the following advantages:

[0045] The present invention fixes a vertical rod and a MEMS optical fiber displacement sensor on a reference point of an optical fiber displacement monitoring point, installs a Beidou positioning device on the top of the vertical rod, drives a steel drill into the optical fiber displacement monitoring point, and connects the steel drill to the MEMS optical fiber displacement sensor through a steel wire; during the monitoring process, the direction in which the steel wire extends from the reference point to the steel drill is used as the monitoring direction, the angle between the monitoring direction and the geographic north direction is obtained, and the initial coordinates of the horizontal displacement of the reference point are obtained, and the displacement data obtained by the sensor are converted into displacement in the geographic direction according to the angle, and the displacement change value in the geographic direction is calculated for the sensor displacement data of each monitoring period, and finally the calculated displacement change value is corrected by the change value of the data measured by the Beidou positioning device in the same period relative to the initial coordinates of the horizontal displacement. The obtained correction value is used as the monitoring result of the substation slope displacement change corresponding to the optical fiber displacement monitoring point; the present invention determines the direction conversion parameter between the MEMS optical fiber displacement sensor and the Beidou positioning device through the geometric angle formed between the steel chisel and the Beidou monitoring benchmark to convert the monitoring data of each MEMS optical fiber displacement sensor, convert the distributed optical fiber displacement sensor into monitoring data in a unified geographical direction, and use the Beidou change data to correct the monitoring data change value, thereby solving the technical problem that the existing method of substation slope displacement monitoring based on MEMS optical fiber displacement sensor is not convenient for subsequent management, analysis and early warning of monitoring data due to inconsistent benchmarks, difficulty in selecting stable benchmark points, confusion in data monitoring directions, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0047] Figure 1 A flowchart of a substation slope monitoring method based on Beidou and optical fiber provided as an optional embodiment of the present invention;

[0048] Figure 2 According to an optional embodiment of the present invention Figure 1 A schematic diagram of the monitoring structure obtained by arranging step S1 of the method shown;

[0049] Figure 3 A structural connection block diagram of a substation slope monitoring system based on Beidou and optical fiber provided as an optional embodiment of the present invention;

[0050] Figure 4A flowchart of a substation slope monitoring method based on Beidou and optical fiber, which is executed by a data processing device, is provided as an optional embodiment of the present invention.

[0051] Reference numerals:

[0052] 1-vertical pole; 2-MEMS fiber optic displacement sensor; 3-Beidou positioning device; 4-steel drill; 5-steel wire; 6-concrete platform; 10-monitoring device; 20-data processing device; A-reference point; B-geographic north reference point; C-fiber optic displacement monitoring point. DETAILED DESCRIPTION

[0053] The embodiments of the present invention provide a substation slope monitoring method, system and device based on Beidou and optical fiber, which are used to solve the technical problems that the existing substation slope displacement monitoring method based on MEMS optical fiber displacement sensors is inconvenient for subsequent management, analysis and early warning of monitoring data due to inconsistent benchmarks, difficulty in selecting stable benchmark points, and confusion in data monitoring directions.

[0054] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] The invention provides a substation slope monitoring method based on Beidou and optical fiber.

[0056] See also Figure 1 , Figure 1 A flowchart of a substation slope monitoring method based on Beidou and optical fiber provided in an embodiment of the present invention is shown.

[0057] An embodiment of the present invention provides a substation slope monitoring method based on Beidou and optical fiber, including steps S1-S6.

[0058] Step S1, select the reference point A of the optical fiber displacement monitoring point C in the slope monitoring area of ​​the substation, fix the vertical pole 1 and the MEMS optical fiber displacement sensor 2 on the reference point A, install the Beidou positioning device 3 on the top of the vertical pole 1, drive the steel drill 4 into the optical fiber displacement monitoring point C, and connect the steel drill 4 to the MEMS optical fiber displacement sensor 2 through the steel wire 5.

[0059] The schematic diagram of the monitoring structure obtained according to step S1 is as follows Figure 2 shown.

[0060] In one achievable manner, the fixing of the vertical rod 1 and the MEMS optical fiber displacement sensor 2 on the reference point A includes:

[0061] Concrete is poured on the reference point A to construct a concrete platform 6 , and the vertical rod 1 and the MEMS optical fiber displacement sensor 2 are fixed on the concrete platform 6 .

[0062] By pouring concrete to construct a concrete platform 6 and fixing the vertical rod 1 and the MEMS optical fiber displacement sensor 2 on the concrete platform 6, it is convenient to set a reference point A on the slope monitoring area of ​​the substation with special soil conditions to ensure the stability of the reference point A.

[0063] Step S2, the data processing device 20 obtains the initial north coordinates and the initial east coordinates of the horizontal displacement of the reference point A collected when the Beidou positioning device 3 is turned on, takes the direction in which the steel wire 5 extends from the reference point A to the steel drill 4 as the monitoring direction, and obtains the angle between the monitoring direction and the geographic north direction.

[0064] The monitoring direction is Figure 2 The AC direction shown is the geographic north direction. Figure 2 The AB direction shown in the figure, where B is the geographic north reference point, the angle between the monitoring direction and the geographic north is Figure 2 The angle α is shown.

[0065] In step S3, the data processing device 20 uses the initial displacement data obtained by the MEMS optical fiber displacement sensor 2 as the relative initial displacement in the monitoring direction, and converts the relative initial displacement into the initial displacement in the geographic north direction and the initial displacement in the geographic east direction according to the angle.

[0066] The data recorded by the MEMS optical fiber displacement sensor 2 in the first monitoring cycle can be used as the initial displacement data. It should be noted that other acquisition time points corresponding to the initial displacement data can also be determined according to actual conditions.

[0067] In one achievable manner, converting the relative initial displacement into an initial displacement in a geographic north direction and an initial displacement in a geographic east direction according to the angle includes:

[0068] Displacement conversion is performed according to the following conversion formula:

[0069]

[0070] Where S1 OA is the relative initial displacement, S1 OX is the initial displacement in the geographic north direction obtained by converting the relative initial displacement, S1 OYis the initial displacement in the geographic east direction obtained by converting the relative initial displacement, and α is the angle.

[0071] Step S4, the data processing device converts the displacement data recorded by the MEMS fiber optic displacement sensor 2 in the subsequent monitoring period to obtain the displacement in the geographic north direction and the displacement in the geographic east direction of the corresponding monitoring period, calculates the first change value of the displacement in the geographic north direction relative to the initial displacement in the geographic north direction, and calculates the second change value of the displacement in the geographic east direction relative to the initial displacement in the geographic east direction.

[0072] When converting the displacement data recorded by the MEMS optical fiber displacement sensor 2 in the subsequent monitoring period, the calculation formula for converting the relative initial displacement can also be referred to. Specifically, the displacement data recorded in the subsequent monitoring period is converted according to the following conversion formula:

[0073]

[0074] Where, Si OA is the relative displacement recorded by the MEMS fiber optic displacement sensor 2 in the i-th monitoring cycle, Si OX is the relative displacement Si OA The initial displacement from geographic north obtained by conversion, Si OY is the relative displacement Si OA The initial displacement in the geographic east direction obtained by conversion, α is the angle.

[0075] The first change value of the displacement in the geographic north direction relative to the initial displacement in the geographic north direction may be calculated according to the following formula:

[0076] ΔS OX (i) = Si OX -S1 OX .

[0077] The second change value of the displacement in the geographic east direction relative to the initial displacement in the geographic east direction can be calculated according to the following formula:

[0078] ΔS OY (j) = Si OY -S1 OY .

[0079] Step S5, the data processing device 20 obtains the horizontal displacement in the geographic north direction and the horizontal displacement in the geographic east direction collected by the Beidou positioning device 3 in the corresponding monitoring period, and calculates the third change value of the horizontal displacement in the geographic north direction relative to the initial coordinate of the horizontal displacement in the north direction and the fourth change value of the horizontal displacement in the geographic east direction relative to the initial coordinate of the horizontal displacement in the east direction.

[0080] The third change value of the horizontal displacement in the geographic north direction relative to the initial north coordinate of the horizontal displacement can be calculated according to the following formula:

[0081] ΔX(i)=X i -X 1

[0082] Where ΔX(i) is the third change value corresponding to the i-th monitoring period, X i is the horizontal displacement in the geographic north direction collected by Beidou positioning device 3 in the i-th monitoring cycle, X 1 is the initial north coordinate of the horizontal displacement.

[0083] The fourth change value of the horizontal displacement in the geographic east direction relative to the initial eastward coordinate of the horizontal displacement can be calculated according to the following formula:

[0084] ΔY(i)=Y i -Y 1

[0085] Where ΔY(i) is the fourth change value corresponding to the i-th monitoring period, Y i Y is the horizontal displacement in the geographic east direction collected by Beidou positioning device 3 in the i-th monitoring cycle, 1 is the initial eastward coordinate of the horizontal displacement.

[0086] Step S6, the data processing device 20 corrects the first change value of the same monitoring period according to the third change value obtained, and corrects the second change value of the same monitoring period according to the fourth change value obtained, and uses the obtained corrected value as the substation slope displacement change monitoring result corresponding to the optical fiber displacement monitoring point C.

[0087] In an achievable manner, the step of correcting the first change value in the same monitoring period according to the obtained third change value, and correcting the second change value in the same monitoring period according to the obtained fourth change value, includes:

[0088] Use the following correction formula for correction:

[0089]

[0090] In the formula, ΔS OX (i) is the first change value corresponding to the i-th monitoring period, ΔX(i) is the third change value corresponding to the i-th monitoring period, S OX (i) is the value of ΔS OX (i) The value obtained after correction; ΔS OY(j) is the second change value corresponding to the j-th monitoring period, ΔY(j) is the fourth change value corresponding to the j-th monitoring period, S OY (j) for ΔS OY (j) The value obtained after correction.

[0091] The present invention also provides a substation slope monitoring system based on Beidou and optical fiber.

[0092] See also Figure 3 , Figure 3 A structural connection block diagram of a substation slope monitoring system based on Beidou and optical fiber provided in an embodiment of the present invention is shown.

[0093] An embodiment of the present invention provides a substation slope monitoring system based on Beidou and optical fiber, comprising:

[0094] A monitoring device 10 includes a vertical rod 1, a MEMS fiber optic displacement sensor 2, a Beidou positioning device 3, a steel drill 4 and a steel wire 5; the vertical rod 1 and the MEMS fiber optic displacement sensor 2 are fixed on a reference point A of a fiber optic displacement monitoring point C selected in a slope monitoring area of ​​a substation, the Beidou positioning device 3 is installed on the top of the vertical rod 1, the steel drill 4 is driven into the fiber optic displacement monitoring point C, and the steel drill 4 is connected to the MEMS fiber optic displacement sensor 2 through the steel wire 5;

[0095] The data processing device 20 is used to obtain the initial north coordinates and the initial east coordinates of the horizontal displacement of the reference point A collected when the Beidou positioning device 3 is turned on, and take the direction in which the steel wire 5 extends from the reference point A to the steel drill 4 as the monitoring direction to obtain the angle between the monitoring direction and the geographic north direction; take the initial displacement data obtained by the MEMS optical fiber displacement sensor 2 as the relative initial displacement of the monitoring direction, and convert the relative initial displacement into the initial displacement in the geographic north direction and the initial displacement in the geographic east direction according to the angle; convert the displacement data recorded by the MEMS optical fiber displacement sensor 2 in the subsequent monitoring period to obtain the displacement in the geographic north direction and the displacement in the geographic east direction of the corresponding monitoring period, and calculate the relative displacement in the geographic north direction. A first change value of the initial displacement in the geographic north direction, and a second change value of the displacement in the geographic east direction relative to the initial displacement in the geographic east direction; obtaining the horizontal displacement in the geographic north direction and the horizontal displacement in the geographic east direction collected by the Beidou positioning device 3 in the corresponding monitoring period, calculating a third change value of the horizontal displacement in the geographic north direction relative to the initial coordinate of the horizontal displacement in the north direction and a fourth change value of the horizontal displacement in the geographic east direction relative to the initial coordinate of the horizontal displacement in the east direction; and, correcting the first change value of the same monitoring period according to the obtained third change value, and correcting the second change value of the same monitoring period according to the obtained fourth change value, and using the obtained corrected value as the substation slope displacement change monitoring result corresponding to the optical fiber displacement monitoring point C.

[0096] In one achievable manner, a concrete platform 6 is formed on the reference point A by pouring concrete, and the vertical rod 1 and the MEMS optical fiber displacement sensor 2 are fixed on the concrete platform 6 .

[0097] In one achievable manner, when the data processing device 20 converts the relative initial displacement into the initial displacement in the geographic north direction and the initial displacement in the geographic east direction according to the angle, it is specifically used to:

[0098] Displacement conversion is performed according to the following conversion formula:

[0099]

[0100] Where S1 OA is the relative initial displacement, S1 OX is the initial displacement in the geographic north direction obtained by converting the relative initial displacement, S1 OY is the initial displacement in the geographic east direction obtained by converting the relative initial displacement, and α is the angle.

[0101] In one achievable manner, the data processing device 20 corrects the first change value of the same monitoring period according to the obtained third change value, and corrects the second change value of the same monitoring period according to the obtained fourth change value, specifically for:

[0102] Use the following correction formula for correction:

[0103]

[0104] In the formula, ΔS OX (i) is the first change value corresponding to the i-th monitoring period, ΔX(i) is the third change value corresponding to the i-th monitoring period, S OX (i) is the value of ΔS OX (i) The value obtained after correction; ΔS OY (j) is the second change value corresponding to the j-th monitoring period, ΔY(j) is the fourth change value corresponding to the j-th monitoring period, S OY (j) for ΔS OY (j) The value obtained after correction.

[0105] The present invention also provides a substation slope monitoring method based on Beidou and optical fiber, and the method is executed by a data processing device.

[0106] Wherein, the data processing device is connected to the monitoring device, and the monitoring device includes a vertical pole 1, a MEMS fiber optic displacement sensor 2, a Beidou positioning device 3, a steel drill 4 and a steel wire 5; the vertical pole 1 and the MEMS fiber optic displacement sensor 2 are fixed on a reference point A of a fiber optic displacement monitoring point C selected in a slope monitoring area of ​​a substation, the Beidou positioning device 3 is installed on the top of the vertical pole 1, the steel drill 4 is driven into the fiber optic displacement monitoring point C, and the steel drill 4 is connected to the MEMS fiber optic displacement sensor 2 through a steel wire 5.

[0107] Figure 4 A flowchart of a substation slope monitoring method based on Beidou and optical fiber, which is performed by a data processing device and provided by an optional embodiment of the present invention, is shown.

[0108] like Figure 4 As shown, the method includes:

[0109] Step S10, obtaining the initial north coordinates and the initial east coordinates of the horizontal displacement of the reference point A collected when the Beidou positioning device 3 is turned on, and taking the direction in which the steel wire 5 extends from the reference point A to the steel drill 4 as the monitoring direction, obtaining the angle between the monitoring direction and the geographic north direction;

[0110] Step S20, using the initial displacement data acquired by the MEMS optical fiber displacement sensor 2 as the relative initial displacement in the monitoring direction, and converting the relative initial displacement into an initial displacement in the geographic north direction and an initial displacement in the geographic east direction according to the angle;

[0111] Step S30, converting the displacement data recorded by the MEMS optical fiber displacement sensor 2 in the subsequent monitoring period to obtain the displacement in the geographic north direction and the displacement in the geographic east direction of the corresponding monitoring period, calculating a first change value of the displacement in the geographic north direction relative to the initial displacement in the geographic north direction, and calculating a second change value of the displacement in the geographic east direction relative to the initial displacement in the geographic east direction;

[0112] Step S40, obtaining the horizontal displacement in the geographic north direction and the horizontal displacement in the geographic east direction collected by the Beidou positioning device 3 in the corresponding monitoring period, and calculating the third change value of the horizontal displacement in the geographic north direction relative to the initial coordinate of the horizontal displacement in the north direction and the fourth change value of the horizontal displacement in the geographic east direction relative to the initial coordinate of the horizontal displacement in the east direction;

[0113] Step S50, correcting the first change value of the same monitoring period according to the third change value obtained, and correcting the second change value of the same monitoring period according to the fourth change value obtained, and using the obtained corrected value as the substation slope displacement change monitoring result corresponding to the optical fiber displacement monitoring point C.

[0114] It should be noted that each step of the method can refer to the corresponding steps described in the embodiment of the first aspect of the present invention. For the convenience and brevity of description, they will not be repeated here.

[0115] The present invention also provides a substation slope monitoring device based on Beidou and optical fiber, comprising:

[0116] A memory, used to store instructions; wherein the instructions are used to implement the substation slope monitoring method based on Beidou and optical fiber as described in the third aspect embodiment above;

[0117] A processor is used to execute instructions in the memory.

[0118] The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the substation slope monitoring method based on Beidou and optical fiber as described in the third aspect embodiment above is implemented.

[0119] In the above-mentioned embodiment of the present invention, the direction conversion parameter between the MEMS fiber optic displacement sensor 2 and the Beidou positioning device 3 is determined by the geometric angle formed between the steel drill 4 and the Beidou monitoring reference, so as to convert the monitoring data of each MEMS fiber optic displacement sensor 2, convert the distributed fiber optic displacement sensor into monitoring data in a unified geographical direction, and use the Beidou change data to correct the change value of the monitoring data, thereby solving the technical problem that the existing method of substation slope displacement monitoring based on MEMS fiber optic displacement sensor 2 is not convenient for subsequent management, analysis and early warning of monitoring data due to inconsistent references, difficulty in selecting stable reference point A, confusion in data monitoring direction, etc.

[0120] Those skilled in the art can clearly understand that, for the sake of convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned embodiment of the first aspect of the present invention, and will not be repeated here.

[0121] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A substation slope monitoring method based on Beidou and optical fiber, characterized in that: include: Select a reference point of the optical fiber displacement monitoring point in the slope monitoring area of ​​the substation, fix a vertical pole and a MEMS optical fiber displacement sensor on the reference point, install a Beidou positioning device on the top of the vertical pole, drive a steel drill into the optical fiber displacement monitoring point, and connect the steel drill to the MEMS optical fiber displacement sensor through a steel wire; The data processing device obtains the initial north coordinates and the initial east coordinates of the horizontal displacement of the reference point collected when the Beidou positioning device is turned on, takes the direction in which the steel wire extends from the reference point to the steel drill as the monitoring direction, and obtains the angle between the monitoring direction and the geographic north direction; The data processing device uses the initial displacement data obtained by the MEMS optical fiber displacement sensor as the relative initial displacement of the monitoring direction, and converts the relative initial displacement into the initial displacement in the geographic north direction and the initial displacement in the geographic east direction according to the angle; The data processing device converts the displacement data recorded by the MEMS optical fiber displacement sensor in a subsequent monitoring period to obtain a displacement in the geographic north direction and a displacement in the geographic east direction of the corresponding monitoring period, calculates a first change value of the displacement in the geographic north direction relative to the initial displacement in the geographic north direction, and calculates a second change value of the displacement in the geographic east direction relative to the initial displacement in the geographic east direction; The data processing device obtains the horizontal displacement in the geographic north direction and the horizontal displacement in the geographic east direction collected by the Beidou positioning device in the corresponding monitoring period, and calculates a third change value of the horizontal displacement in the geographic north direction relative to the initial coordinate of the horizontal displacement in the north direction and a fourth change value of the horizontal displacement in the geographic east direction relative to the initial coordinate of the horizontal displacement in the east direction; The data processing device corrects the first change value of the same monitoring period according to the obtained third change value, and corrects the second change value of the same monitoring period according to the obtained fourth change value, and uses the obtained correction value as the substation slope displacement change monitoring result corresponding to the optical fiber displacement monitoring point; The converting the relative initial displacement into an initial displacement in the geographic north direction and an initial displacement in the geographic east direction according to the angle comprises: Displacement conversion is performed according to the following conversion formula: Where S1 OA is the relative initial displacement, S1 OX is the initial displacement in the geographic north direction obtained by converting the relative initial displacement, S1 OY is the initial displacement in the geographic east direction obtained by converting the relative initial displacement, and α is the angle; The step of correcting the first change value in the same monitoring period according to the obtained third change value, and correcting the second change value in the same monitoring period according to the obtained fourth change value, comprises: Use the following correction formula for correction: In the formula, ΔS OX (i) is the first change value corresponding to the i-th monitoring period, ΔX(i) is the third change value corresponding to the i-th monitoring period, S OX (i) is the value of ΔS OX (i) The value obtained after correction; ΔS OY (j) is the second change value corresponding to the j-th monitoring period, ΔY(j) is the fourth change value corresponding to the j-th monitoring period, S OY (j) for ΔS OY (j) The value obtained after correction.

2. A substation slope monitoring system based on Beidou and optical fiber, characterized in that: include: The monitoring device comprises a vertical pole, a MEMS optical fiber displacement sensor, a Beidou positioning device, a steel drill and a steel wire; the vertical pole and the MEMS optical fiber displacement sensor are fixed on a reference point of an optical fiber displacement monitoring point selected in a slope monitoring area of ​​a substation, the Beidou positioning device is installed on the top of the vertical pole, the steel drill is driven into the optical fiber displacement monitoring point, and the steel drill is connected to the MEMS optical fiber displacement sensor through the steel wire; A data processing device, used to obtain the initial north coordinates and the initial east coordinates of the horizontal displacement of the reference point collected when the Beidou positioning device is turned on, and to obtain the angle between the monitoring direction and the geographic north direction by taking the direction in which the steel wire extends from the reference point to the steel drill as the monitoring direction; Using the initial displacement data acquired by the MEMS optical fiber displacement sensor as the relative initial displacement in the monitoring direction, converting the relative initial displacement into an initial displacement in the geographic north direction and an initial displacement in the geographic east direction according to the angle; Converting the displacement data recorded by the MEMS optical fiber displacement sensor in a subsequent monitoring period to obtain a displacement in the geographic north direction and a displacement in the geographic east direction of the corresponding monitoring period, calculating a first change value of the displacement in the geographic north direction relative to the initial displacement in the geographic north direction, and calculating a second change value of the displacement in the geographic east direction relative to the initial displacement in the geographic east direction; Obtain the horizontal displacement in the geographic north direction and the horizontal displacement in the geographic east direction collected by the Beidou positioning device in the corresponding monitoring period, and calculate a third change value of the horizontal displacement in the geographic north direction relative to the initial coordinate of the horizontal displacement in the north direction and a fourth change value of the horizontal displacement in the geographic east direction relative to the initial coordinate of the horizontal displacement in the east direction; And, the first change value of the same monitoring period is corrected according to the obtained third change value, and the second change value of the same monitoring period is corrected according to the obtained fourth change value, and the obtained correction value is used as the substation slope displacement change monitoring result corresponding to the optical fiber displacement monitoring point; When the data processing device converts the relative initial displacement into the initial displacement in the geographic north direction and the initial displacement in the geographic east direction according to the included angle, it is specifically used to: Displacement conversion is performed according to the following conversion formula: Where S1 OA is the relative initial displacement, S1 OX is the initial displacement in the geographic north direction obtained by converting the relative initial displacement, S1 OY is the initial displacement in the geographic east direction obtained by converting the relative initial displacement, and α is the angle; When the data processing device amends the first change value of the same monitoring period according to the obtained third change value, and amends the second change value of the same monitoring period according to the obtained fourth change value, it is specifically used to: Use the following correction formula for correction: In the formula, ΔS OX (i) is the first change value corresponding to the i-th monitoring period, ΔX(i) is the third change value corresponding to the i-th monitoring period, S OX (i) is the value of ΔS OX (i) The value obtained after correction; ΔS OY (j) is the second change value corresponding to the j-th monitoring period, ΔY(j) is the fourth change value corresponding to the j-th monitoring period, S OY (j) for ΔS OY (j) The value obtained after correction.

3. The substation slope monitoring system based on Beidou and optical fiber according to claim 2 is characterized in that: A concrete platform is formed on the reference point by pouring concrete, and the vertical rod and the MEMS optical fiber displacement sensor are fixed on the concrete platform.

4. A substation slope monitoring device based on Beidou and optical fiber, characterized in that: include: A memory for storing instructions; wherein the instructions are used to implement the substation slope monitoring method based on Beidou and optical fiber as claimed in claim 1; A processor is used to execute instructions in the memory.

5. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the substation slope monitoring method based on Beidou and optical fiber as claimed in claim 1 is implemented.

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