A device and method for measuring deformation of a box-type substation

Abstract

This invention discloses a deformation measurement device and method for prefabricated substations, relating to the field of deformation measurement technology for prefabricated substations. The device includes a measuring frame, two sets of measuring devices, and two sets of driving devices. The driving devices are used to move a second telescopic frame and the measuring devices vertically. Each driving device includes a servo motor, a first transmission component, a second transmission component, and a threaded rod. The first transmission component drives the second transmission component to intermittently rotate forward and backward, causing the threaded rod to also intermittently rotate forward and backward. The threaded rod is connected to the second telescopic frame, allowing the second telescopic frame to intermittently fold and unfold, thus adjusting the horizontal position of the measuring devices. This invention measures the deformation of the surface of the prefabricated substation casing. By observing the external deformation, timely countermeasures can be taken based on the deformation value to prevent safety hazards caused by external structural deformation of the prefabricated substation.

Description

Technical Field

[0001] This invention relates to the field of deformation measurement technology for prefabricated substations, specifically to a device and method for measuring deformation in prefabricated substations. Background Technology

[0002] A prefabricated box-type substation is a factory-prefabricated, compact indoor / outdoor power distribution system that integrates high-voltage switchgear, distribution transformers, and low-voltage power distribution equipment according to a specific wiring scheme. It is typically installed in one or more enclosures and features a compact structure, small footprint, and ease of installation and maintenance. It is widely used in urban power grids, residential communities, commercial centers, factories, and other locations.

[0003] The high-voltage compartment mainly contains high-voltage switchgear, fuses, surge arresters, etc., used to control and protect high-voltage circuits; the transformer compartment is equipped with distribution transformers to convert high-voltage electricity into low-voltage electricity; the low-voltage compartment contains low-voltage distribution devices, such as low-voltage switches, distribution cabinets, etc., used to distribute low-voltage power; the outer casing serves to protect the internal equipment and prevent external interference and the effects of severe weather.

[0004] During long-term operation, prefabricated substations are affected by various factors, such as temperature changes, mechanical stress, and foundation settlement, which can cause structural deformation and pose safety hazards. Therefore, a deformation measurement device and method for prefabricated substations are proposed to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a device and method for measuring the deformation of the outer surface of a prefabricated substation, observing the deformation on the outside, and taking timely countermeasures based on the deformation value to avoid safety hazards caused by deformation of the external structure of the prefabricated substation.

[0006] To achieve the above objectives, the present invention provides a deformation measurement device for a prefabricated substation, comprising a measuring frame including two foldable columns arranged side by side and two sets of first telescopic frames arranged side by side; two sets of measuring devices, each including a laser ranging sensor and a mechanical ranging device, for simultaneously performing laser deformation measurement and mechanical deformation measurement on the outer surface of the prefabricated substation; and two sets of driving devices, each with a second telescopic frame on its back, the other end of which is connected to a measuring device on the same side. The driving device is mounted on the columns and slidably connected to them vertically, for driving the second telescopic frame and the measuring device to move vertically. The driving device includes a servo motor, a first transmission component, a second transmission component, and a threaded rod. The first transmission component is mounted on the output end of the servo motor, and the second transmission component is located on one side of the first transmission component. The first transmission component drives the second transmission component to intermittently rotate forward and backward, causing the threaded rod to intermittently rotate forward and backward. The threaded rod is connected to the second telescopic frame, causing the second telescopic frame to intermittently fold and unfold, thereby adjusting the horizontal position of the measuring device.

[0007] Furthermore, the two sets of the first telescopic frames are set between the two columns, and the measuring frame is set outside the side of the box-type substation to be measured; the column includes an upper column and a lower column, which are hinged together. A positioning structure is installed on one side of the upper column and the lower column to position the upper column after it is unfolded. A limit structure is provided on the side of the upper column near the hinge and the side of the lower column near the hinge to limit the upper column when it is folded.

[0008] Furthermore, the positioning structure includes a positioning pin, a positioning spring, a pin block, a stop block, and a fixing block. The stop block and the fixing block are both fixed to the upper column, the pin block is fixed to the lower column, the positioning pin passes through the fixing block and the pin block from top to bottom, the positioning pin is installed on the fixing block by the positioning spring, the positioning spring is fixed between the inner side of the upper end of the positioning pin and the upper end of the fixing block, and the stop block is set above the fixing block to limit the positioning pin after it is lifted. The limiting structure includes a plug-in block, a plug rod, a limiting spring, and a pull plate. The plug-in block is fixed to the upper column, the plug rod is installed in the lower column, the pull plate is fixed to one end of the plug rod and is set outside the lower column, the limiting spring is sleeved and installed outside the plug rod and is fixed in the lower column, and the lower column has a plug groove adapted to the plug-in block on the side near the hinge. When the column is folded, the plug rod extends horizontally into the plug-in block inserted in the plug groove.

[0009] Furthermore, the first telescopic frame is a frame composed of multiple sets of cross-connected rods. A guide column is slidably connected to one end of the lower rod of the first telescopic frame, and a hydraulic rod is connected to the other end of the lower rod of the first telescopic frame. The columns on both sides are respectively provided with mounting slots on the side closer to each other. The guide column is installed in the mounting slot inside the column on the same side, and the hydraulic rod is installed in the mounting slot inside the column on the other side. A brake wheel is installed at the bottom of the column to assist the column in moving. The measuring device also includes a measuring box and a control device. The measuring box is located at one end of the second telescopic frame, and the control device is installed inside the measuring box. The second telescopic frame is also a frame composed of multiple sets of cross-connected rods. A connecting block is connected to one end of the frame, and a slider is connected to the other end of the frame. A guide rod is connected through the slider, and the guide rod is fixed to the back of the measuring box.

[0010] Furthermore, the first transmission component, the second transmission component, and the threaded rod outer cover are provided with a mounting box, and the servo motor is mounted on the outer wall of the mounting box by screws; the first transmission component includes a fifth gear, a fourth gear, and a third gear. The fifth gear is located at the output end of the servo motor, and there are two third gears arranged symmetrically above and below each other. The two third gears are meshed and located above and below the fifth gear, and the fourth gear is meshed and located on the side of the fifth gear near the column; a sixth gear is fixedly installed at the end of the fourth gear near the column, and the sixth gear extends into the column. The sixth gear is meshed with a toothed plate, which is fixedly installed in the column. A guide block is fixedly installed on the side of the mounting box near the column, and a connecting groove adapted to the guide block and the sixth gear is opened on the column.

[0011] Furthermore, the second transmission component includes a toggle member, a grooved wheel, a second gear, and a first gear. Two toggle members and two grooved wheels are respectively provided, one upper and one lower, with the upper and lower grooved wheels arranged coaxially and symmetrically. The upper and lower toggle members are coaxially offset. The toggle member includes a toggle wheel and a lever eccentrically fixed to its top. The toggle wheel is fixed to the top of the upper third gear and is a cam. The second gear is fixed to the bottom of the upper grooved wheel and is a partial gear. The second gear intermittently meshes with the first gear, and the first gear is fixed to the upper end of the threaded rod. The threaded rod passes through the connecting block and is threadedly connected to it. A guide plate passes through the connecting block and is fixed to the side wall of the mounting box. The connecting block extends from the outside into the mounting box. U-shaped grooves are arranged in a circular array on the grooved wheel. If the upper lever engages with a U-shaped groove on the upper grooved wheel, causing the second gear to rotate, then after rotation, the lower lever engages with an adjacent U-shaped groove on the lower grooved wheel, causing the second gear to rotate in both directions, thus achieving intermittent forward and reverse rotation of the threaded rod.

[0012] Furthermore, the laser ranging sensor is embedded in the side of the measuring box facing the prefabricated substation and is electrically connected to the control device; the mechanical ranging device includes a laser ranging sensor, which is embedded in the side of the measuring box facing the prefabricated substation and is electrically connected to the control device.

[0013] Furthermore, the mechanical ranging device includes a measuring ball, a crossbar, a connecting spring, a movable plate, a bracket, and a camera. The crossbar passes through the measuring box and is fixed to the measuring ball at one end near the prefabricated substation. The connecting spring is sleeved on the outside of the middle section of the crossbar, with one end fixed to the inner wall of the movable plate and the other end fixed to the inner wall of the bracket. The crossbar passes through the bracket and has scale lines. The movable plate is horizontally L-shaped, with its shorter side fixedly sleeved on the crossbar and its longer side extending from the inside to the outside of the measuring box away from the prefabricated substation. The camera is located below the movable plate, and both the camera and the bracket are installed in the measuring box with screws.

[0014] A measurement method for the aforementioned box-type substation deformation measurement device includes the following steps: acquiring measurement area parameters stored in a data repository, analyzing the coverage of the surface to be measured, and determining whether rescanning is required based on the coverage of the surface to be measured; acquiring laser ranging data stored in a data repository, and analyzing the laser measurement value; acquiring mechanical ranging data stored in a data repository, analyzing the mechanical measurement value, and combining the laser measurement value to analyze the comprehensive deformation; determining whether processing is required based on the acquired comprehensive deformation; if no processing is required, constructing an ARIMA model to obtain the deformation prediction value, and determining the scanning measurement frequency based on the deformation prediction value.

[0015] Furthermore, based on the coverage of the surface to be measured, it is determined whether additional scanning is needed. This includes the following steps: The formula for calculating the coverage of the surface to be measured is:

[0016] ;

[0017] In the formula: This represents the area of ​​the measured region. Let C be the total area of ​​the surface to be measured, and C be the coverage rate of the surface to be measured. The coverage rate of the surface to be measured is compared with a coverage rate threshold. If the coverage rate is less than the threshold, additional scanning is required; if the coverage rate is not less than the threshold, additional scanning is not required. Based on the acquired comprehensive shape variables, a determination is made as to whether further processing is needed. This includes the following steps: comparing the comprehensive shape variables with the corresponding shape variable thresholds for the corresponding surfaces of the prefabricated substation stored in the data repository. If the comprehensive shape variables are less than the threshold, no processing is required; if the comprehensive shape variables are not less than the threshold, processing is required. The formula for calculating the comprehensive shape variables is:

[0018] ;

[0019] In the formula: Let i be the total deformation at the i-th measurement point. Let i be the laser measurement value at the i-th measurement point. Let i be the mechanical measurement value of the i-th measurement point. for Weighting factors for Weighting factors For the comprehensive deformation variables, i is the measurement point number and n is the number of measurement points.

[0020] Further, based on the predicted values ​​of the deformable variables, the scanning measurement frequency is determined, specifically including the following steps: extracting the stored comprehensive deformable variable data from the data repository to construct a time series dataset; checking for missing values ​​and outliers in the dataset and performing data cleaning; using the unit root test to perform a stationarity test on the time series dataset to obtain a stationary series; based on the stationary series, determining the order of the ARIMA model using the autocorrelation function and partial autocorrelation function; based on the determined order of the ARIMA model, constructing the ARIMA model and training it using the training dataset; the ARIMA model equation is:

[0021] ;

[0022] In the formula: The value of the time series at time tg. Let be the random error of the time series at time tg, L be the lag operator, p be the autoregressive order, d be the difference order, and q be the moving average order. These are the autoregressive coefficients. Here are the moving average coefficients, and m is the order number. The difference is of order d. Based on the ARIMA model equation, the predicted values ​​of the shape variables are obtained. The predicted values ​​of the shape variables are compared with the maximum threshold of the shape variables stored in the data repository. If the predicted value of the shape variables is greater than the maximum threshold, the scanning measurement frequency is increased. If the predicted value of the shape variables is not greater than the maximum threshold, the predicted value of the shape variables is compared with the minimum threshold of the shape variables stored in the data repository. If the predicted value of the shape variables is greater than the minimum threshold, the scanning measurement frequency remains unchanged. If the predicted value of the shape variables is not greater than the minimum threshold, the scanning measurement frequency is decreased.

[0023] The present invention has the following beneficial effects:

[0024] (1) The deformation measurement device of the box-type substation, through the use of the set measuring frame, measuring device and driving device, measures the deformation of the outer surface of the box-type substation on time. By observing the deformation on the outside, timely countermeasures are taken according to the deformation value to avoid the box-type substation from being deformed due to external structure and posing safety hazards.

[0025] (2) The deformation measurement device of the box-type substation is used in conjunction with the second telescopic frame, the measuring device, the servo motor, the first transmission component, the second transmission component and the threaded rod to drive the measuring device to move up and down and horizontally, so as to realize multi-point measurement of the outer surface of the box-type substation, increase the measurement range and ensure the reliability and accuracy of the measurement data.

[0026] (3) The deformation measurement device of the box-type substation, through the use of the set columns, the first telescopic frame, the guide column and the hydraulic rod, can adjust the distance between the two columns according to the width of the surface to be measured in the box-type substation, so as to make it adaptable, with high flexibility and improved adaptability of the device.

[0027] (4) The deformation measurement method of this box-type substation determines whether to rescan by calculating the coverage of the surface to be measured, ensuring the integrity of the measurement of the box-type substation shell, ensuring the acquisition of comprehensive measurement data, and combining laser ranging and mechanical ranging data to calculate the comprehensive deformation, integrating the advantages of the two measurement methods, providing more accurate data support for judging the equipment status, enabling timely measures to prevent equipment failure, ensuring the continuity of power supply, reducing power outages and economic losses caused by equipment failure, and ensuring the safe and stable operation of the power system. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure under the measurement state of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the present invention;

[0030] Figure 3 For the present invention Figure 2 A structural diagram from another perspective;

[0031] Figure 4 This is a schematic diagram of the internal structure of the mounting box of the present invention;

[0032] Figure 5 This is a schematic diagram of the connection between the guide rod and the slider of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the driving device of the present invention;

[0034] Figure 7 For the present invention Figure 6A structural diagram from another perspective;

[0035] Figure 8 This is a schematic diagram of the internal structure of the measuring box of the present invention;

[0036] Figure 9 This is a schematic diagram of the structure connecting the spring and the movable plate of the present invention;

[0037] Figure 10 This is a schematic diagram of the structure of the column after folding.

[0038] Figure 11 This is a schematic diagram of the connection structure between the plug block and the plug rod of the present invention;

[0039] Figure 12 For the present invention Figure 2 Schematic diagram of the structure at point A;

[0040] Figure 13 This is a schematic diagram of the structure of a box-type substation deformation measurement method according to the present invention.

[0041] In the diagram, 1. Column; 2. First telescopic frame; 3. Guide column; 4. Hydraulic rod; 5. Mounting slot; 6. Mounting box; 7. Measuring box; 8. Second telescopic frame; 9. Laser rangefinder sensor; 10. Guide rod; 11. Connecting block; 12. Guide plate; 13. Threaded rod; 14. First gear; 15. Second gear; 16. Grooved wheel; 17. Actuating wheel; 18. Actuating lever; 19. Third gear; 20. Fourth gear; 21. Fifth gear; 22. Servo 23. Motor; 24. Sixth gear; 25. Slider; 26. Control device; 27. Gear plate; 28. Guide block; 29. ​​Connecting groove; 30. Crossbar; 31. Measuring ball; 32. Connecting spring; 33. Moving plate; 34. Bracket; 35. Camera; 36. Positioning pin; 37. Positioning spring; 38. Pin block; 39. Stop block; 40. Fixing block; 41. Insertion block; 42. Insertion rod; 43. Limiting spring; 44. Pull plate; 45. Insertion groove. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figures 1-12This invention provides a technical solution: a deformation measurement device for a prefabricated substation, comprising a measuring frame, two sets of measuring devices, and two sets of driving devices. The measuring frame includes two foldable columns 1 arranged side by side and two sets of first telescopic frames 2 arranged side by side. The measuring devices include a laser ranging sensor 9 and a mechanical ranging device, used to simultaneously perform laser deformation measurement and mechanical deformation measurement on the outer surface of the prefabricated substation. A second telescopic frame 8 is provided on the back of the driving device, and the other end of the second telescopic frame 8 is connected to the measuring device on the same side. The driving device is mounted on the column 1 and is slidably connected to the column 1 vertically. The driving device is used to drive the second telescopic frame 8 and the measuring device to move vertically. The driving device includes a servo motor 22, a first transmission component, a second transmission component, and a threaded rod 13. The first transmission component is installed at the output end of the servo motor 22, and the second transmission component is located on one side of the first transmission component. The first transmission component drives the second transmission component to intermittently rotate forward and reverse, causing the threaded rod 13 to intermittently rotate forward and reverse. The threaded rod 13 is connected to the second telescopic frame 8, causing the second telescopic frame 8 to intermittently fold and unfold, thereby adjusting the horizontal position of the measuring device.

[0044] Two sets of first telescopic frames 2 are set between two columns 1, and the measuring frame is set outside the side of the box-type substation to be measured; the column 1 includes an upper column and a lower column, which are hinged to each other. A positioning structure is installed on one side of the upper column and the lower column to position the upper column after it is unfolded. A limit structure is set on the side of the upper column near the hinge and the side of the lower column near the hinge to limit the upper column when it is folded.

[0045] The positioning structure includes a positioning pin 35, a positioning spring 36, a pin block 37, a stop block 38, and a fixing block 39. The stop block 38 and the fixing block 39 are both fixed to the upper column, and the pin block 37 is fixed to the lower column. The positioning pin 35 passes through the fixing block 39 and the pin block 37 from top to bottom. The positioning pin 35 is installed on the fixing block 39 through the positioning spring 36. The positioning spring 36 is fixed between the upper end of the positioning pin 35 and the upper end of the fixing block 39. The stop block 38 is located above the fixing block 39 and is used to limit the positioning pin 35 after it is lifted.

[0046] The limiting structure includes a plug block 40, a plug rod 41, a limiting spring 42, and a pull plate 43. The plug block 40 is fixed on the upper column, the plug rod 41 is installed in the lower column, the pull plate 43 is fixed at one end of the plug rod 41 and is located outside the lower column, the limiting spring 42 is sleeved and installed outside the plug rod 41 and is fixed in the lower column. The lower column has a plug groove 44 that matches the plug block 40 on the side near the hinge. When the column 1 is folded, the plug rod 41 extends horizontally into the plug block 40 inserted into the plug groove 44. The height of the plug groove 44 is slightly greater than the thickness of the plug block 40 so that the plug block 40 can be inserted into the plug groove 44 after rotation.

[0047] In this embodiment, when the upper column and lower column are folded, the upper end of the positioning pin 35 engages with the stop block 38, and the positioning spring 36 is in a stretched state. At this time, the positioning pin 35 separates from the pin block 37, the upper column is folded and fits against the side of the lower column, and the insertion block 40 is inserted into the insertion slot 44. The insertion rod 41 is inserted into the insertion block 40, and the limiting spring 42 is in a natural state, limiting the insertion rod 41, thereby limiting the insertion block 40, so that the upper column and lower column can be folded, making it convenient to store the whole device.

[0048] The first telescopic frame 2 is a frame composed of multiple sets of cross-connected rods. One end of the first telescopic frame 2 is slidably connected to a guide column 3 at the bottom, and the other end of the first telescopic frame 2 is connected to a hydraulic rod 4 at the bottom. The two uprights 1 on opposite sides are respectively provided with mounting slots 5. The guide column 3 is installed in the mounting slot 5 inside the upright 1 on the same side, and the hydraulic rod 4 is installed in the mounting slot 5 inside the upright 1 on the other side. Brake wheels are installed at the bottom of the uprights 1 to assist the uprights 1 in moving.

[0049] In this embodiment, the hydraulic rod 4 is installed between the inner side of the column 1 and the end of the first telescopic frame 2 by screws. During measurement, one of the columns 1 is placed at one end of the surface to be measured, and the brake wheel is used to brake it so that the column 1 is stationary. The hydraulic rod 4 operates to push the first telescopic frame 2, causing the first telescopic frame 2 to unfold. The other end of the first telescopic frame 2 slides on the guide column 3, pushing the other column 1 to move under the action of its bottom brake wheel to the other end of the other surface to be measured. This makes the distance between the two columns 1 match the length of the surface to be measured, which can be flexibly adjusted and improves the adaptability of the device.

[0050] The measuring device also includes a measuring box 7 and a control device 25. The measuring box 7 is located at one end of the second telescopic frame 8, and the control device 25 is installed inside the measuring box 7. The second telescopic frame 8 is also a frame composed of multiple sets of cross-connected rods. One end of the frame is connected to a connecting block 11, and the other end of the frame is connected to a slider 24. A guide rod 10 is connected through the slider 24, and the guide rod 10 is fixed to the back of the measuring box 7.

[0051] In this embodiment, the control device 25 is equipped with a power supply, processor, etc., to realize the operation of the measuring device. The threaded rod 13 rotates, and under the guidance of the guide plate 12, the connecting block 11 moves up and down, thereby driving the second telescopic frame 8 to open or retract. The slider 24 moves on the guide rod 10 to realize the purpose of horizontal reciprocating movement of the measuring box 7 and its internal structure, which is used to perform multi-point measurement on the surface to be measured in the box-type substation.

[0052] The first transmission component, the second transmission component, and the threaded rod 13 are covered by a mounting box 6. The servo motor 22 is mounted on the outer wall of the mounting box 6 by screws. The first transmission component includes a fifth gear 21, a fourth gear 20, and a third gear 19. The fifth gear 21 is located at the output end of the servo motor 22. There are two third gears 19, which are arranged symmetrically above and below the fifth gear 21. The two third gears 19 are meshed and located above and below the fifth gear 21. The fourth gear 20 is meshed and located on the side of the fifth gear 21 near the column 1. A sixth gear 23 is fixed at the end of the fourth gear 20 near the column 1. The sixth gear 23 extends into the column 1 and is meshed with a toothed plate 26. The toothed plate 26 is fixed in the column 1. A guide block 27 is fixed on the side of the mounting box 6 near the column 1. A connecting groove 28 adapted to the guide block 27 and the sixth gear 23 is opened on the column 1. In this embodiment, the toothed plate 26 has two sections, one end of which is installed on the upper column and the other end is installed on the lower column, and the two sections of the toothed plate 26 can be combined to form a complete toothed plate 26.

[0053] In this embodiment, the fifth gear 21, the fourth gear 20, and the third gear 19 are all bevel gears, and the radius of the fifth gear 21 is larger than the radius of the fourth gear 20 and the radius of the third gear 19. The third gear 19 is installed inside the mounting box 6. The servo motor 22 drives the fifth gear 21 to rotate, and the fifth gear 21 drives the upper and lower third gears 19 and the side fourth gear 20 to rotate. The rotation of the fourth gear 20 drives the sixth gear 23 to rotate. Through its meshing connection with the toothed plate 26 and the sliding of the guide block 27 on the column 1, the mounting box 6 and its internal structure, as well as the second telescopic frame 8 and the measuring box 7 and their internal structures, can move vertically up and down. The two third gears 19 rotate in opposite directions to drive the second transmission component.

[0054] The second transmission component includes a toggle member, a grooved wheel 16, a second gear 15, and a first gear 14. Two toggle members and two grooved wheels 16 are respectively provided, one upper and one lower, coaxially symmetrically arranged. The two toggle members are coaxially offset. The toggle member includes a toggle wheel 17 and a lever 18 eccentrically fixed to its top. The toggle wheel 17 is fixed to the top of the upper third gear 19 and is a cam. The second gear 15 is fixed to the bottom of the upper grooved wheel 16. The second gear 15 is a partial gear, intermittently meshing with the first gear 14. The first gear 14 is fixed... The threaded rod 13 passes through the connecting block 11 and is threadedly connected to it. A guide plate 12 is provided through the connecting block 11 and is fixed on the side wall of the mounting box 6. The connecting block 11 extends from the outside into the mounting box 6. U-shaped grooves are arranged in an annular array on the grooved wheel 16. If the upper lever 18 engages with a U-shaped groove on the upper grooved wheel 16, causing the second gear 15 to rotate, then after rotation, the lower lever 18 engages with an adjacent U-shaped groove on the lower grooved wheel 16, causing the second gear 15 to rotate in the opposite direction, thereby realizing the intermittent forward and reverse rotation of the threaded rod 13.

[0055] In this embodiment, both the grooved wheel 16 and the threaded rod 13 are installed inside the mounting box 6. If the upper actuating wheel 17 drives the lever 18 to rotate, the upper lever 18 rotates and engages in a U-shaped groove on the upper grooved wheel 16, causing the upper grooved wheel 16 to rotate and drive the lower grooved wheel 16 to rotate. The rotation of the upper grooved wheel 16 drives the second gear 15 to rotate, gradually connecting with the first gear 14 and driving the first gear 14 to rotate, thereby driving the threaded rod 13 to rotate. Under the limiting guidance of the guide plate 12, the connecting block 11 moves. Under the continuous operation of the servo motor 22... During operation, the upper lever 18 gradually separates from the upper grooved wheel 16. After separation, under the action of the lower third gear 19, the lower lever 18 engages with the U-shaped groove adjacent to the U-shaped groove at the same position on the lower grooved wheel 16 and the upper one. This causes the lower grooved wheel 16 to rotate in the opposite direction, which in turn causes the upper grooved wheel 16 to rotate in the opposite direction with the second gear 15 and engage with the first gear 14. This causes the threaded rod 13 to rotate in the opposite direction, and the connecting block 11 to move in the opposite direction, causing the second telescopic frame 8 to retract and expand, thereby achieving the purpose of horizontally moving the measuring box 7 and its internal structure.

[0056] The laser rangefinder 9 is embedded in the measuring box 7 on the side facing the box-type substation and is electrically connected to the control device 25.

[0057] In this embodiment, as the measuring box 7 moves, the laser range sensor 9 detects the distance between it and the outer shell of the box-type substation, and records the distance in real time for subsequent use in obtaining the overall measurement results.

[0058] The mechanical ranging device includes a measuring ball 30, a crossbar 29, a connecting spring 31, a moving plate 32, a bracket 33, and a camera 34. The crossbar 29 passes through the measuring box 7 and is fixed to the measuring ball 30 at the end closest to the prefabricated substation. The connecting spring 31 is sleeved on the outside of the middle section of the crossbar 29, with one end fixed to the inner wall of the moving plate 32 and the other end fixed to the inner wall of the bracket 33. The crossbar 29 passes through the bracket 33 and has scale lines. The moving plate 32 is horizontally placed in an L-shape, with its shorter side fixedly sleeved on the crossbar 29 and its longer side extending from the inside out to the outside of the measuring box 7 away from the prefabricated substation. The camera 34 is located below the moving plate 32, and both the camera 34 and the bracket 33 are installed in the measuring box 7 with screws.

[0059] In this embodiment, the measuring ball 30 can rotate 360 ​​degrees so that when the measuring box 7 moves horizontally and vertically, the measuring ball 30 can move on the surface of the box-type substation shell. The setting of the connecting spring 31 ensures that the measuring ball 30 stays in contact with the shell surface during the measurement process, thus ensuring the accuracy of the measurement results.

[0060] During measurement, the movement of the measuring ball 30 drives the moving plate 32 to move horizontally. As the crossbar 29 moves, the numbers exposed on the crossbar 29 change. The camera 34 records the changes in the numbers on the crossbar 29 in real time so that the overall measurement results can be obtained later.

[0061] In use, one of the columns 1 is placed at one end of the surface to be measured. The brake wheel is used to keep column 1 stationary. The hydraulic rod 4 operates, pushing the first telescopic frame 2 to unfold. The other end of the first telescopic frame 2 slides on the guide column 3, pushing the other column 1 to move to the other end of the surface to be measured under the action of its bottom brake wheel. This moves the column 1 to the other end of the surface to be measured, ensuring the distance between the two columns 1 matches the length of the surface. Pulling the pull plate 43 outward causes the insertion rod 41 to move outward, compressing the limiting spring 42. Retract the plug rod 41 and separate it from the plug block 40. Repeat the same operation on the other side. Rotate the upper column to separate the plug block 40 from the plug slot 44. When the upper column can no longer rotate, pull the positioning pin 35 upward and rotate it ninety degrees. After rotation, release the positioning pin 35. The positioning spring 36 returns to its original position and retracts, causing the positioning pin 35 to move downward and insert into the pin block 37 on the lower column. This completes the unfolding of the upper column and makes the measuring ball 30 in the mechanical ranging device adhere to the surface of the box-type substation shell from above or below the column 1. It is then ready for use.

[0062] The measuring box 7 is positioned at the starting position above the column 1. The servo motor 22 drives the fifth gear 21 to rotate. The fifth gear 21 drives the two upper and lower third gears 19 and the side fourth gear 20 to rotate. The rotation of the fourth gear 20 drives the sixth gear 23 to rotate. Through its meshing connection with the toothed plate 26 and the sliding of the guide block 27 on the column 1, the mounting box 6 and its internal structure, as well as the second telescopic frame 8 and the measuring box 7 and its internal structure, move vertically up and down.

[0063] During this process, the two third gears 19 rotate in opposite directions. If the upper actuating wheel 17 drives the lever 18 to rotate, the upper lever 18 rotates and engages in a U-shaped groove on the upper grooved wheel 16, causing the upper grooved wheel 16 to rotate and driving the lower grooved wheel 16 to rotate. The rotation of the upper grooved wheel 16 drives the second gear 15 to rotate, gradually connecting with the first gear 14 and driving the first gear 14 to rotate, thereby driving the threaded rod 13 to rotate. Under the limiting guidance of the guide plate 12, the connecting block 11 moves, supported by the servo motor 22. During continued operation, the upper lever 18 gradually separates from the upper grooved wheel 16. After separation, under the action of the lower third gear 19, the lower lever 18 engages with the U-shaped groove adjacent to the U-shaped groove at the same position on the lower grooved wheel 16 and the upper one. This causes the lower grooved wheel 16 to rotate in the opposite direction, which in turn causes the upper grooved wheel 16 to rotate in the opposite direction with the second gear 15 and engage with the first gear 14. This causes the threaded rod 13 to rotate in the opposite direction, and the connecting block 11 to move in the opposite direction, causing the second telescopic frame 8 to retract and expand, and to move the measuring box 7 and its internal structure horizontally.

[0064] By moving the measuring box 7 and its internal structure horizontally and vertically, the measuring box 7 drives the measuring ball 30 to move on the surface of the box-type substation. When the surface of the box-type substation deforms, the measuring ball 30 moves horizontally, driving the crossbar 29 to move horizontally, compressing or stretching the connecting spring 31. At the same time, the digital changes exposed on the crossbar 29 are recorded in real time by the camera 34, which is used to obtain the overall measurement result later. At the same time, the laser range sensor 9 also performs distance measurement. By combining the two measurement methods, the measurement result can be obtained.

[0065] Laser measurement is greatly affected by the measurement environment, while mechanical measurement has poor accuracy. Combining the two measurement methods can ensure higher measurement accuracy.

[0066] A method for measuring the deformation of a prefabricated substation, referring to Figure 13 The process includes the following steps: obtaining the measurement area parameters stored in the data repository, analyzing the coverage of the surface to be measured, and determining whether additional scanning is needed based on the coverage of the surface to be measured.

[0067] The formula for calculating the coverage of the surface to be measured is:

[0068] ;

[0069] In the formula: This represents the area of ​​the measured region. Let C be the total area of ​​the surface to be measured, and C be the coverage of the surface to be measured. The coverage of the surface to be measured is compared with the coverage threshold of the surface to be measured. If the coverage of the surface to be measured is less than the coverage threshold, then additional scanning is required; if the coverage of the surface to be measured is not less than the coverage threshold, then no additional scanning is required.

[0070] Calculate the coverage rate and compare it with a threshold to identify which areas have been effectively measured, avoiding duplicate measurements in already measured areas. If the coverage rate reaches or exceeds the threshold, no additional measurements are needed, saving time and resources. When the coverage rate does not reach the threshold, areas that have not been measured or have been insufficiently measured can be accurately located, and these areas can be scanned to improve measurement efficiency and ensure comprehensive measurement.

[0071] Retrieve laser ranging data stored in the data repository and analyze it to obtain laser measurement values; retrieve mechanical ranging data stored in the data repository and analyze it to obtain mechanical measurement values; combine the laser measurement values ​​with the mechanical measurement values ​​to obtain comprehensive deformation variables; based on the obtained comprehensive deformation variables, determine whether further processing is required.

[0072] The formula for calculating laser measurement values ​​is:

[0073] ;

[0074] In the formula: Here, c represents the laser measurement value, t represents the speed of light, and t represents the time it takes for the laser to travel from the sensor emission point to the receiver.

[0075] The formula for calculating mechanical measurement values ​​is:

[0076] ;

[0077] In the formula: This is the endpoint value of the scale line. This is the starting value of the scale line. These are mechanically measured values.

[0078] The formula for calculating the comprehensive deformation is:

[0079] ;

[0080] In the formula: Let i be the total deformation at the i-th measurement point. Let i be the laser measurement value at the i-th measurement point. Let i be the mechanical measurement value of the i-th measurement point. for Weighting factors for Weighting factors For the comprehensive deformation variables, i is the measurement point number and n is the number of measurement points.

[0081] The above settings , It is obtained from a data repository and calculated based on historical data. , as well as ,Establish , The mapping set of its corresponding weight factors is used to obtain the current... , .

[0082] The comprehensive shape variable is compared with the corresponding shape variable threshold of the corresponding box-type substation surface stored in the data repository. If the comprehensive shape variable is less than the shape variable threshold, no processing is required; if the comprehensive shape variable is not less than the shape variable threshold, processing is required.

[0083] Laser ranging calculates distance using the speed of light and the time it takes for light to travel, offering high accuracy and fast response, but it is susceptible to ambient light and obstructions. Mechanical ranging measures distance by changing the scale, offering good stability and the ability to work in complex environments, but its accuracy is relatively limited. Combining the two methods to calculate comprehensive deformation variables achieves complementary advantages.

[0084] At the site of a prefabricated substation, if laser measurement deviates due to strong light interference, mechanical measurement can provide relatively stable data; conversely, the accuracy shortcomings of mechanical measurement can be compensated by laser measurement, thereby obtaining more accurate deformation data, more accurately reflecting the actual deformation of the prefabricated substation, and reducing the impact of the environment.

[0085] In this step, the deformation threshold is matched from the data repository according to the number of measurement points. By comparing the comprehensive deformation with the corresponding deformation threshold, it is possible to determine whether there are any safety hazards in the equipment in a timely manner. Measures such as repair, reinforcement or replacement of parts can be taken in time to prevent the equipment failure from worsening, ensure the stability and security of power supply, and reduce power outages and economic losses caused by equipment failure.

[0086] If no processing is required, an ARIMA model is constructed to obtain the predicted values ​​of the deformation variables, and the scanning measurement frequency is determined based on the predicted values ​​of the deformation variables.

[0087] Extract the stored comprehensive variable data from the data repository to construct a time series dataset; check for missing values ​​and outliers in the dataset and perform data cleaning; use the unit root test to test the stationarity of the time series dataset to obtain a stationary series; based on the stationary series, determine the order of the ARIMA model using the autocorrelation function and partial autocorrelation function; based on the determined order of the ARIMA model, construct the ARIMA model and train the ARIMA model using the training dataset.

[0088] The equations of the ARIMA model are:

[0089] ;

[0090] In the formula: The value of the time series at time tg. Let be the random error of the time series at time tg, L be the lag operator, p be the autoregressive order, d be the difference order, and q be the moving average order. These are the autoregressive coefficients. Here are the moving average coefficients, and m is the order number. It is a d-order difference.

[0091] Based on the ARIMA model equations, the predicted values ​​of the shape variables are obtained. These predicted values ​​are then compared with the maximum threshold of shape variables stored in the data repository. If the predicted value is greater than the maximum threshold, the scanning measurement frequency is increased. If the predicted value is not greater than the maximum threshold, the predicted value is compared with the minimum threshold of shape variables stored in the data repository. If the predicted value is greater than the minimum threshold, the scanning measurement frequency remains unchanged. If the predicted value is not greater than the minimum threshold, the scanning measurement frequency is decreased.

[0092] In the process of building the ARIMA model, the input data (i.e., historical deformation measurement data) is preprocessed (including data cleaning, stationarity test, and determination of the ARIMA model order) to ensure the quality of the data and the effectiveness of the model.

[0093] During data cleaning, missing values ​​can be filled using interpolation methods such as linear interpolation and spline interpolation. If outliers exist, they should be identified and processed using statistical rules or machine learning algorithms based on the data's distribution characteristics, replacing them with reasonable values ​​to ensure data quality.

[0094] The unit root test is used to test the stationarity of a time series dataset (i.e., historical variable measurement data). The null hypothesis is that the time series data has a unit root, i.e., it is non-stationary; the alternative hypothesis is that the time series data does not have a unit root, and the data is stationary. If the p-value of the test result is less than the given significance level, the null hypothesis is rejected, and the data is considered stationary; otherwise, the data needs to be differencing. Suppose that the data becomes a stationary series after d differencing.

[0095] Based on the stationary data (i.e., the data after converting the non-stationary time series into a stationary time series through the difference operation mentioned above), calculate the autocorrelation function (ACF) and partial autocorrelation function (PACF) using the stationary data to obtain the ACF plot and PACF plot. Observe at which lag order the ACF plot rapidly approaches 0. This lag order q is the moving average order. Observe at which lag order the PACF plot rapidly approaches 0. This lag order p is the autoregressive order.

[0096] Using historical deformation data (input data) as the training dataset, the model parameters are estimated using maximum likelihood estimation. and The estimated parameters are substituted into the ARIMA model equations to fit historical data, and the goodness of fit is calculated. A subset of historical data is used as a validation set to evaluate the model's predictive performance. After model training is complete, the most recent deformation measurements are input into the trained ARIMA model, and combined with the model parameters, the predicted deformation values ​​(output data) for future time points are calculated.

[0097] By constructing an ARIMA model to predict deformation and comparing the predicted values ​​with thresholds to adjust the scanning measurement frequency, the safety status of prefabricated substations can be effectively monitored. This helps to identify potential problems in advance and achieve preventative maintenance. Once the deformation exceeds the maximum threshold, it means that the equipment faces a significant safety risk. Increasing the scanning measurement frequency at this time can promptly capture changes in deformation, allowing for rapid action to be taken to avoid malfunctions caused by excessive equipment deformation and reduce losses from equipment failures.

[0098] The scanning measurement frequency is dynamically adjusted based on the predicted deformation value, avoiding unnecessary waste of resources. When the predicted deformation value is within a safe range and below the minimum threshold, the scanning measurement frequency is appropriately reduced, thus reducing the consumption of manpower, material resources, and time.

[0099] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0100] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A deformation measurement device for a box-type substation, characterized in that, include: The measuring frame includes two foldable uprights (1) arranged side by side and two sets of first telescopic frames (2) arranged side by side. Two sets of measuring devices, including a laser ranging sensor (9) and a mechanical ranging device, are used to simultaneously perform laser deformation measurement and mechanical deformation measurement on the outer surface of the box-type substation; Two sets of drive devices are provided. The back of the drive device is provided with a second telescopic frame (8). The other end of the second telescopic frame (8) is connected to the measuring device on the same side. The drive device is set on the column (1) and is slidably connected to the column (1) to drive the second telescopic frame (8) and the measuring device to move up and down. The driving device includes a servo motor (22), a first transmission component, a second transmission component, and a threaded rod (13). The first transmission component is installed at the output end of the servo motor (22), and the second transmission component is located on one side of the first transmission component. The first transmission component drives the second transmission component to rotate intermittently in both forward and reverse directions, so that the threaded rod (13) rotates intermittently in both forward and reverse directions. The threaded rod (13) is connected to the second telescopic frame (8), so that the second telescopic frame (8) folds and unfolds intermittently to adjust the horizontal position of the measuring device. The first transmission component, the second transmission component, and the threaded rod (13) are covered with a mounting box (6), and the servo motor (22) is mounted on the outer wall of the mounting box (6) by screws; The first transmission component includes a fifth gear (21), a fourth gear (20) and a third gear (19). The fifth gear (21) is located at the output end of the servo motor (22). There are two third gears (19), which are arranged symmetrically above and below each other. The two third gears (19) are meshed and located above and below the fifth gear (21). The fourth gear (20) is meshed and located on the side of the fifth gear (21) near the column (1). The fourth gear (20) is fixedly provided with a sixth gear (23) at one end near the column (1). The sixth gear (23) extends into the column (1) and is meshed with a toothed plate (26). The toothed plate (26) is fixedly provided in the column (1). The mounting box (6) is fixedly provided with a guide block (27) on one side near the column (1). The column (1) is provided with a connecting groove (28) that is compatible with the guide block (27) and the sixth gear (23). The second transmission component includes a toggle, a grooved wheel (16), a second gear (15), and a first gear (14). The toggle and the grooved wheel (16) are respectively provided in upper and lower positions. The upper and lower grooved wheels (16) are coaxially symmetrically arranged, and the upper and lower toggles are coaxially offset. The actuating element includes an actuating wheel (17) and a lever (18) eccentrically fixed to its top. The actuating wheel (17) is fixed to the top of the upper third gear (19), and the actuating wheel (17) is a cam. The second gear (15) is fixed at the bottom of the upper grooved wheel (16). The second gear (15) is a partial gear. The second gear (15) is intermittently meshed with the first gear (14). The first gear (14) is fixed at the upper end of the threaded rod (13). The threaded rod (13) passes through the connecting block (11) and is threadedly connected to it. A guide plate (12) is provided through the connecting block (11). The guide plate (12) is fixed on the side wall of the mounting box (6). The connecting block (11) extends from the outside into the mounting box (6). The grooved wheel (16) has U-shaped grooves arranged in an annular array. If the upper lever (18) engages with a U-shaped groove on the upper grooved wheel (16), causing the second gear (15) to rotate, then after rotation, the lower lever (18) engages with an adjacent U-shaped groove on the lower grooved wheel (16), causing the second gear (15) to rotate in the opposite direction, thereby realizing the intermittent forward and reverse rotation of the threaded rod (13). The laser ranging sensor (9) is embedded in the measuring box (7) on the side facing the box-type substation and is electrically connected to the control device (25); The mechanical ranging device includes a measuring ball (30), a crossbar (29), a connecting spring (31), a moving plate (32), a bracket (33), and a camera (34). The crossbar (29) passes through the measuring box (7) and is fixed on the measuring ball (30) at one end near the box-type substation. The connecting spring (31) is sleeved on the outside of the middle section of the crossbar (29), and one end is fixed on the inner wall of the movable plate (32), and the other end is fixed on the inner wall of the bracket (33). The crossbar (29) passes through the bracket (33). The crossbar (29) is provided with scale lines. The movable plate (32) is in the shape of a horizontal L. Its shorter side is fixedly sleeved on the crossbar (29), and its longer side extends from the inside to the outside of the measuring box (7) away from the box-type substation. The camera (34) is located below the movable plate (32), and both the camera (34) and the bracket (33) are installed in the measuring box (7) by screws; The measuring box (7) drives the measuring ball (30) to move on the surface of the box-type substation. When the surface of the box-type substation is deformed, the measuring ball (30) moves horizontally, which drives the crossbar (29) to move horizontally, squeezing or stretching the connecting spring (31). At the same time, the numbers exposed on the crossbar (29) change, and the camera (34) records the changes on the crossbar (29) in real time.

2. The deformation measurement device for a box-type substation according to claim 1, characterized in that: The two sets of the first telescopic frame (2) are set between two columns (1), and the measuring frame is set on the outside of the side of the box-type substation to be measured; The column (1) includes an upper column and a lower column, which are hinged together. A positioning structure is installed on one side of the upper column and the lower column to position the upper column after it is unfolded. A limit structure is provided on the side of the upper column near the hinge and the side of the lower column near the hinge to limit the upper column when it is folded.

3. The deformation measurement device for a box-type substation according to claim 2, characterized in that: The positioning structure includes a positioning pin (35), a positioning spring (36), a pin block (37), a stop block (38), and a fixing block (39). The stop block (38) and the fixing block (39) are both fixed on the upper column, and the pin block (37) is fixed on the lower column. The positioning pin (35) passes through the fixing block (39) and the pin block (37) from top to bottom. The positioning pin (35) is installed on the fixing block (39) through the positioning spring (36). The positioning spring (36) is fixed between the inner side of the upper end of the positioning pin (35) and the upper end of the fixing block (39). The stop block (38) is set above the fixing block (39) and is used to limit the positioning pin (35) after it is lifted. The limiting structure includes a plug block (40), a plug rod (41), a limiting spring (42), and a pull plate (43). The plug block (40) is fixed on the upper column, the plug rod (41) is installed in the lower column, the pull plate (43) is fixed at one end of the plug rod (41) and is located outside the lower column, the limiting spring (42) is sleeved and installed outside the plug rod (41) and is fixed in the lower column. The lower column has a plug groove (44) that matches the plug block (40) on the side near the hinge. When the column (1) is folded, the plug rod (41) extends horizontally into the plug block (40) inserted into the plug groove (44).

4. The deformation measurement device for a box-type substation according to claim 1, characterized in that: The first telescopic frame (2) is a frame composed of multiple sets of cross-connected rods. One end of the first telescopic frame (2) is slidably connected to a guide column (3) on the lower rod, and the other end of the first telescopic frame (2) is connected to a hydraulic rod (4). The two columns (1) on both sides are respectively provided with mounting grooves (5) close to each other. The guide column (3) is installed in the mounting groove (5) inside the column (1) on the same side, and the hydraulic rod (4) is installed in the mounting groove (5) inside the column (1) on the other side. Brake wheels are installed at the bottom of the column (1) to assist the column (1) in moving; The measuring device also includes a measuring box (7) and a control device (25). The measuring box (7) is located at one end of the second telescopic frame (8), and the control device (25) is installed inside the measuring box (7). The second telescopic frame (8) is also a frame composed of multiple sets of cross-connected rods. One end of the frame is connected to a connecting block (11), and the other end of the frame is connected to a slider (24). A guide rod (10) is connected through the slider (24), and the guide rod (10) is fixed to the back of the measuring box (7).

5. A measurement method for the deformation measurement device of a box-type substation according to any one of claims 1-4, characterized in that, Includes the following steps: Obtain the measurement area parameters stored in the data repository, analyze them to obtain the coverage of the surface to be measured, and determine whether additional scanning is needed based on the coverage of the surface to be measured. Retrieve laser ranging data stored in the data repository and analyze it to obtain laser measurement values; The mechanical ranging data stored in the data repository is retrieved, the mechanical measurement values ​​are analyzed, and the comprehensive deformation variables are obtained by combining the laser measurement values. Based on the retrieved comprehensive deformation variables, it is determined whether further processing is required. If no processing is required, an ARIMA model is constructed to obtain the predicted values ​​of the deformation variables, and the scanning measurement frequency is determined based on the predicted values ​​of the deformation variables.

6. The measurement method according to claim 5, characterized in that, Based on the coverage of the surface to be measured, determine whether additional scanning is needed, which includes the following steps: The formula for calculating the coverage of the surface to be measured is: ； In the formula: This represents the area of ​​the measured region. Let C be the total area of ​​the surface to be measured, and C be the coverage of the surface to be measured. The coverage of the surface to be measured is compared with the coverage threshold of the surface to be measured. If the coverage of the surface to be measured is less than the coverage threshold, additional scanning is required. If the coverage of the surface to be measured is not less than the coverage threshold of the surface to be measured, then no additional scanning is required; Based on the acquired comprehensive variables, determine whether further processing is required, specifically including the following steps: The formula for calculating the comprehensive deformation is: ； In the formula: Let i be the total deformation at the i-th measurement point. Let i be the laser measurement value at the i-th measurement point. Let i be the mechanical measurement value of the i-th measurement point. for Weighting factors for Weighting factors For the comprehensive deformation variables, i is the measurement point number, and n is the number of measurement points; The comprehensive shape variable is compared with the corresponding shape variable threshold of the corresponding surface of the box-type substation stored in the data repository. If the comprehensive shape variable is less than the shape variable threshold, no processing is required. If the total deformable variable is not less than the deformable variable threshold, then processing is required.

7. The measurement method according to claim 5, characterized in that, The scanning measurement frequency is determined based on the predicted deformation values, specifically including the following steps: Extract comprehensive deformable data stored in the data repository to construct a time series dataset; Check the dataset for missing or outlier values ​​and perform data cleaning. The unit root test was used to test the stationarity of the time series dataset, resulting in a stationary series. Based on the stationary sequences after stabilization, the order of the ARIMA model is determined using the autocorrelation function and the partial autocorrelation function. Based on the determined order of the ARIMA model, an ARIMA model is constructed and trained using the training dataset. The equations of the ARIMA model are: ； In the formula: The value of the time series at time tg. Let be the random error of the time series at time tg, L be the lag operator, p be the autoregressive order, d be the difference order, and q be the moving average order. These are the autoregressive coefficients. Here are the moving average coefficients, and m is the order number. It is a d-order difference; Based on the ARIMA model equation, the predicted values ​​of the shape variables are obtained. The predicted values ​​of the shape variables are compared with the maximum threshold of the shape variables stored in the data repository. If the predicted values ​​of the shape variables are greater than the maximum threshold of the shape variables, the scanning measurement frequency is increased. If the predicted value of the shape variable is not greater than the maximum threshold of the shape variable, then the predicted value of the shape variable is compared with the minimum threshold of the shape variable stored in the data repository. If the predicted value of the shape variable is greater than the minimum threshold of the shape variable, then the scanning measurement frequency remains unchanged. If the predicted value of the deformation variable is not greater than the minimum threshold of the deformation variable, then reduce the scanning measurement frequency.

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