A transmission line ground grid acceptance measurement rod and measurement method

Abstract

This application relates to the field of power transmission line measurement technology, specifically disclosing a power transmission line grounding grid acceptance measurement stick and measurement method. The power transmission line grounding grid acceptance measurement stick includes a first column and a second column; both the first and second columns are equipped with an ultrasonic transceiver component and a laser ranging component; the first and second columns can measure the distance between themselves via the ultrasonic transceiver component; the first and second columns can also measure the vertical distance between the laser ranging component and the grounding grid via the laser ranging component; the first and second columns are used to move to different measurement points to measure the distance between different measurement points. In this solution, measurement using ultrasonic waves and lasers avoids interference from ground obstacles, improves measurement accuracy, and is adaptable to complex terrain and environments in the field.

Description

Technical Field

[0001] This application relates to the field of power transmission line measurement technology, and in particular to a power transmission line grounding grid acceptance measurement stick and measurement method. Background Technology

[0002] In power transmission lines, the grounding grid serves as a lightning protection facility. When a transmission line tower or lightning rod is struck by lightning, the lightning current is conducted into the earth through the grounding grid, protecting the transmission line from lightning damage. The length and burial depth of the grounding grid directly affect the safe and stable operation of the transmission line; therefore, measuring the length and burial depth of the grounding grid is a necessary step in the acceptance process.

[0003] The existing method for measuring the length of the underground geogrid mainly involves manual measurement using a measuring tape. Specifically, one worker holds the measuring tape box while another worker pulls the tape along the geogrid's direction, ensuring the tape remains parallel to the geogrid's frame lines or rays during movement. After measuring a single segment, the tape is retrieved. This process is repeated for the winding geogrid, segment by segment. The total length of the geogrid is then calculated by manually recording the lengths of each segment and summing them. The existing method for measuring the burial depth of the underground geogrid requires additional measuring equipment for separate inspection, followed by manual verification by staff to ensure the measurement results meet design standards.

[0004] In practical applications, the construction environment of power transmission line grounding grids often has obstacles such as piles of soil, uneven terrain, trees and weeds, which can easily cause the measuring tape to bend, increase measurement errors and measurement difficulty, and reduce work efficiency.

[0005] Furthermore, transmission line grounding grids are typically laid out around the tower foundations or along the line's direction. Their shapes may include ring grids, radial grids, frame-and-wire combined grids, or irregular grids formed by connecting multiple conductor segments. The terrain, slope, soil accumulation, and vegetation cover vary significantly across different construction sites, often requiring grounding grid acceptance personnel to walk, locate, and measure within incompletely or partially backfilled construction areas. Since the various measurement segments of the grounding grid are not necessarily on the same straight line, staff typically need to select endpoints segment by segment along the actual extension direction of the grounding grid and measure the distance between each endpoint when verifying its length.

[0006] When using traditional measuring tapes, the tape needs to be kept taut between the two measuring ends. When there are obstacles such as mounds of earth, pits, exposed rocks, temporary construction materials, or weeds between the measuring sections, the tape can easily be lifted, bent, or deviated from its path, causing the actual extension path of the tape to differ from the designed measurement path of the grounding grid. Especially in grounding grid acceptance scenarios around poles, workers often find it difficult to keep the tape consistently aligned with or parallel to the direction of the grounding grid being measured, in order to avoid foundations, grounding down conductors, construction pit walls, or slopes. This introduces significant manual reading errors and path errors.

[0007] Meanwhile, measuring with a measuring tape requires at least two workers to work together: one to hold the starting point of the tape, and the other to pull the tape to the end point and read the value. For long or multi-fold ground grids, workers need to frequently lower the tape, read the value, record the data, lower the tape, and reposition it, making the entire acceptance process quite cumbersome. In windy, muddy, or poorly lit environments, maintaining a stable tape, clear readings, and accurate endpoint positioning become even more difficult, affecting measurement efficiency and the reliability of the acceptance results.

[0008] On the other hand, the burial depth of the grounding grid is usually determined by measuring the height difference between the grid and the ground surface or construction reference plane. In the current acceptance process, length and depth measurements are often performed using different tools, requiring workers to switch tools and repeatedly locate the same measurement point. If the measurement point shifts during tool switching, the length and depth data are difficult to accurately correspond. If all length measurements are completed first, and then the depth is measured, it is necessary to relocate all measurement points, further increasing on-site work time. Therefore, the current method is not only inefficient but also hinders timely on-site assessment of whether the grid length and burial depth simultaneously meet design requirements.

[0009] Based on the above, it is necessary to provide a measuring tool suitable for use on-site during the acceptance of power transmission line grounding grids. This tool should not only assist staff in moving and positioning in complex terrain, but also measure the distance between adjacent measuring points without relying on a tape measure for straight laying, and simultaneously or nearly simultaneously acquire information on the burial depth of the grounding grid at the same measuring point, thereby improving the convenience and accuracy of grounding grid acceptance measurements. Summary of the Invention

[0010] In view of this, the purpose of this application is to provide a measuring stick and method for the acceptance measurement of power transmission line grounding grid, so as to solve some or all of the above-mentioned problems.

[0011] To achieve the above-mentioned technical objectives, the first aspect of this application provides a power transmission line grounding grid acceptance measurement stick, comprising: a first column and a second column;

[0012] Both the first column and the second column are equipped with ultrasonic transceiver components and laser ranging components.

[0013] The distance between the first column and the second column can be measured by the ultrasonic transceiver assembly;

[0014] The first column and the second column can measure the vertical distance between the laser ranging component and the ground grid through the laser ranging component;

[0015] The first column and the second column are used to move to different measurement points to measure the distance values ​​between the different measurement points.

[0016] Furthermore, both the first column and the second column are provided with a rotating rod capable of rotation;

[0017] The laser ranging component is mounted on the rotating rod;

[0018] The rotating rod can be rotated to a horizontal position.

[0019] Furthermore, handrails are provided on both the first column and the second column.

[0020] Furthermore, control components are provided on both the first column and the second column.

[0021] Furthermore, both the first column and the second column are equipped with alarm modules;

[0022] The alarm module is electrically connected to the control component;

[0023] The alarm module is used to issue an alarm signal when the vertical distance value is less than a preset standard value.

[0024] Furthermore, the control component is equipped with a display panel and control buttons;

[0025] The control button can adjust the value of the preset standard value.

[0026] Furthermore, the alarm module is an audible and visual alarm.

[0027] A second aspect of this application provides a method for acceptance measurement of transmission line grounding grids, based on the transmission line grounding grid acceptance measurement stick described in any of the above claims, and includes the following steps:

[0028] S1. Move the first column and the second column to the endpoint Sn and endpoint Sn+1 of the nth measurement segment, respectively, with the initial value of n being 1.

[0029] S2. Activate the ultrasonic transceiver and laser ranging components on the first and second columns. Measure the distance between the first and second columns using the ultrasonic transceiver and the laser ranging component. Measure the grounding depth of the endpoint Sn and the endpoint Sn+1 using the laser ranging component.

[0030] S3. After n+1, return to step S1 until all the measurement segments have been measured.

[0031] Furthermore, the interval between S2 and S3 includes:

[0032] S21. Compare the buried depth value of the grounding grid with the preset standard value and record the comparison result.

[0033] Furthermore, the interval between S2 and S3 includes:

[0034] S22. Accumulate and calculate the distance values ​​of each of the measured segments to obtain the total length value.

[0035] As can be seen from the above technical solutions, this application provides a power transmission line grounding grid acceptance measurement stick and measurement method; wherein, the power transmission line grounding grid acceptance measurement stick includes: a first column and a second column; both the first column and the second column are provided with an ultrasonic transceiver component and a laser ranging component; the first column and the second column can measure the distance between them through the ultrasonic transceiver component; the first column and the second column can measure the vertical distance between the laser ranging component and the grounding grid through the laser ranging component; the first column and the second column are used to move to different measurement points to measure the distance between different measurement points.

[0036] In this solution, the ultrasonic transceiver unit and the laser ranging unit can respectively measure the length of the ground grid and the depth of the pre-buried area, achieving integrated measurement and reducing reliance on external equipment. Furthermore, using ultrasonic and laser measurements avoids interference from ground obstacles, improves measurement accuracy, and is adaptable to complex terrain and environments in the field.

[0037] Furthermore, since both the first and second columns can be directly held and moved by the operator to different measurement points, the two columns themselves can serve as positioning references for the measurement endpoints. When the two are located at adjacent measurement points, the ultrasonic transceiver assembly can form a distance measurement path between the two columns. The operator does not need to lay the measuring tape on the ground, nor does the measuring tape need to cross or conform to complex terrain. Therefore, it can reduce the impact of on-site obstacles such as piles of soil, pits, and weeds on length measurement.

[0038] Simultaneously, the laser ranging component is mounted on the first and second columns, allowing workers to obtain the vertical distance between the ground grid and the laser ranging component at the same endpoint while simultaneously measuring the segment length. This vertical distance value is then used to determine whether the ground grid's burial depth meets the standards. In this way, length and depth measurements can be performed around the same endpoint, reducing the need for switching measuring tools and repeated positioning, and avoiding confusion in the correspondence of acceptance data due to inconsistent measurement locations.

[0039] Furthermore, the first and second pillars can be moved alternately to subsequent measurement points, allowing adjacent measurement segments to share a common endpoint. This method reduces the number of times staff need to move back and forth and facilitates continuous measurement of meandering, zigzag, or multi-segment ground networks. After each measurement segment is completed, the control component can record the distance value of that segment and the vertical distance value at the endpoint, and then accumulate them to obtain the total length value of the ground network, thereby reducing the risk of errors from manual recording and calculation.

[0040] Furthermore, the alarm module can issue an alarm signal when the burial depth corresponding to the vertical distance value does not meet the preset standard value, allowing staff to identify non-compliant locations on-site. Compared to the method of compiling data after measurement, this solution facilitates timely marking of problem points and verification, improving the timeliness and traceability of the acceptance process. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 A schematic diagram of the first and second columns of a power transmission line grounding grid acceptance measurement cane provided for an embodiment of this application;

[0043] Figure 2 A side view and a schematic diagram of the control components of a first or second column of a power transmission line grounding grid acceptance measurement cane provided for embodiments of this application;

[0044] Figure 3 A schematic diagram of a measuring stick used for accepting and measuring the vertical distance of a power transmission line grounding grid, provided as an embodiment of this application;

[0045] Figure 4 A schematic diagram illustrating the alternating movement of a power transmission line grounding grid acceptance measurement cane in different measurement sections, provided for an embodiment of this application;

[0046] In the diagram: 10, First column; 20, Second column; 30, Ultrasonic transmitter / receiver assembly; 40, Laser rangefinder assembly; 50, Rotating rod; 60, Handrail; 70, Control assembly; 71, Display panel; 72, Control button; 73, Switch; 74, Adjustment button; 80, Alarm module.

[0047] Point a: Endpoint 1; Point b: Endpoint 2; Point c: Endpoint 3; Point d: Endpoint 4. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments in this application specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application.

[0049] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0051] Please see Figure 1 In this application embodiment, a first aspect provides a power transmission line grounding grid acceptance measurement walking stick, including: a first column 10 and a second column 20; both the first column 10 and the second column 20 are provided with an ultrasonic transceiver component 30 and a laser ranging component 40; the first column 10 and the second column 20 can measure the distance between them through the ultrasonic transceiver component 30; the first column 10 and the second column 20 can measure the vertical distance between the laser ranging component 40 and the grounding grid through the laser ranging component 40; the first column 10 and the second column 20 are used to move to different measurement points to measure the distance between different measurement points.

[0052] In this embodiment, the first column 10 and the second column 20 can be held by different workers, and can also provide support for workers' outdoor movement during field operations.

[0053] In this embodiment, the first column 10 and the second column 20 can have the same or substantially the same structure, enabling them to serve as measurement references for each other. Both the first column 10 and the second column 20 can be rod-shaped structures. The bottom of the rod-shaped structure can be configured as a support end suitable for contacting the ground. The support end can be a flat-bottomed structure, a pointed structure, or a structure with an anti-slip pad. A flat-bottomed structure facilitates stable placement on hard surfaces, concrete foundations, or relatively flat soil surfaces; a pointed structure facilitates insertion into soft soil to improve the stability of the endpoint positioning; and an anti-slip pad increases friction on wet or sloping surfaces, reducing slippage of the column bottom during measurement.

[0054] The lengths of the first column 10 and the second column 20 can be set at a comfortable height for the worker to stand and hold, allowing the worker to place the bottom of the column at the measurement point without bending over. The columns can be made of aluminum alloy, stainless steel, fiber-reinforced plastic, or other materials with sufficient strength and portability. An anti-corrosion layer or an insulating layer can be applied to the outer surface of the column to adapt to the damp, muddy, rainy, or dusty environments at power transmission line construction sites. The aforementioned materials and surface treatments do not change the measurement principle of this application; they are only used to improve the durability and field adaptability of the equipment.

[0055] To facilitate the differentiation of the two measurement endpoints, the first column 10 and the second column 20 can be marked with different colors, numbers, or illuminated markers. For example, the first column 10 can be marked as the starting point column, and the second column 20 can be marked as the ending point column. In subsequent measurement segments, staff can also exchange the starting and ending point attributes of the two as needed. This marking method allows on-site recorders to more easily confirm the sequence of endpoints corresponding to the current measurement segment, reducing data recording confusion.

[0056] The ultrasonic transceiver assembly 30 can be positioned in the upper middle part of the column or near the top of the column to maintain a certain height distance between the ultrasonic transceiver assembly 30 and the ground. By placing the ultrasonic transceiver assembly 30 at a higher position, the obstruction of the ultrasonic wave propagation path by ground undulations, gravel, grass, clods of earth, stagnant water, construction residue, or low-lying structures can be reduced, allowing the ultrasonic signal to propagate along a relatively stable spatial path between the two columns.

[0057] During measurement, the first column 10 and the second column 20 are placed at two adjacent measurement points, respectively. When the two columns are in the measurement state, the ultrasonic transceiver components 30 on the first column 10 and the second column 20 are preferably located at the same height or nearly the same height. In this way, a basically horizontal or nearly horizontal signal transmission path can be formed between the two ultrasonic transceiver components 30, thereby reducing problems such as propagation path deviation, reflection error, or unstable measurement results caused by excessive height difference.

[0058] Furthermore, the first column 10 and the second column 20 can adopt the same or similar structural dimensions to ensure that the two ultrasonic transceiver components 30 are installed at the same height on the columns. Alternatively, a height adjustment structure can be provided on the columns to allow the ultrasonic transceiver components 30 to be adjusted vertically according to the ground elevation difference or measurement requirements. Operators can adjust the two ultrasonic transceiver components 30 to the same or nearly the same height using scales, positioning holes, limit grooves, or locking devices to improve measurement accuracy.

[0059] When there are grass, clods of earth, gravel, low protrusions, or construction debris between two measurement points, the ultrasonic signal can propagate above the obstacles, unlike traditional measuring tapes which need to be laid close to the ground. This avoids length errors caused by the measuring tape being lifted, bent, detoured, or suspended by obstacles, and also reduces the need for workers to clear the measurement path or repeatedly adjust the tape position. Especially in outdoor environments such as substations, transmission line tower foundations, and grounding grid construction sites, where the ground is often uneven or has many obstacles, this embodiment improves the convenience and stability of the measurement process.

[0060] Furthermore, positioning the ultrasonic transceiver assembly 30 in the upper middle part of the column reduces the probability of mud, dust, or grass directly adhering to its surface, thus minimizing measurement anomalies caused by obstruction, contamination, or moisture. When used in conjunction with the alarm module 80 or display module, the device can promptly alert personnel to readjust the column position or height when ultrasonic signal reception is abnormal, ranging results exceed the preset error range, or the height difference between the two columns is too large, thereby improving the reliability of the measurement data.

[0061] In one embodiment, the ultrasonic transceiver assembly 30 on the first column 10 can serve as a transmitter, and the ultrasonic transceiver assembly 30 on the second column 20 can serve as a receiver. In another embodiment, both ultrasonic transceiver assemblies 30 can perform both transmitting and receiving functions to achieve bidirectional ranging or averaging of multiple ranging measurements. By using bidirectional ranging or averaging of multiple ranging measurements, the influence of wind speed, temperature, transient interference, or shaking of the operator's grip on the measurement results can be reduced. The control assembly 70 can filter, average, or determine the stability of multiple received measurement values ​​to output a more reliable distance value.

[0062] The ultrasonic transceiver assembly 30 can be installed roughly facing another column. For easier alignment, directional indicators can be provided on the column, allowing operators to roughly align the two ultrasonic transceiver assemblies 30. Even if there is an angular deviation between the two columns, distance measurement can still be completed as long as the effective transmission and reception angles of the ultrasonic transceiver assembly 30 cover the direction of the other column. Therefore, this application does not require operators to strictly straighten a physical measuring tape as they would with a tape measure, resulting in greater tolerance for errors during on-site operation.

[0063] The laser ranging component 40 is used to obtain the vertical distance value from the grounding grid to the grounding grid. Since the grounding grid is usually located in a trench or pit during acceptance testing, the laser ranging component 40 can emit a ranging beam downwards. After the operator positions the bottom of the column near the measurement endpoint, they can adjust the rotating rod 50 or the column's posture to make the measuring beam of the laser ranging component 40 point towards the exposed grounding grid location. The vertical distance value measured by the laser ranging component 40 can be displayed on the display panel 71 or sent to the control component 70 for storage and judgment.

[0064] In some embodiments, the relative height between the laser ranging component 40 and the bottom of the column can be pre-calibrated at the factory or calibrated by personnel using the control button 72 before use. The control component 70 can calculate the burial depth of the grounding grid based on the installation height of the laser ranging component 40, the location of the bottom of the column, and the vertical distance measured by the laser ranging component 40. If the ground surface is used as a reference, the bottom of the column can be aligned with the ground surface, and the bottom of the column can be used as the reference point; if the trench edge or construction reference surface is used as a reference, the corresponding reference height can be adjusted according to the construction requirements. In this way, this application can adapt to the acceptance criteria for the burial depth of the grounding grid in different engineering projects.

[0065] To reduce the impact of column tilt on the vertical distance value, a horizontal indicator structure or attitude prompting structure can be provided on the first column 10 and the second column 20. For example, a bubble level can be installed on the column, allowing the operator to determine whether the column is approximately vertical by observing the bubble position before measuring the depth; or the control component 70 can be connected to an attitude sensor to prompt the operator to readjust when the column tilt angle exceeds the allowable range. This structure is an auxiliary structure to improve measurement stability and does not change the basic method of obtaining the vertical distance value through the laser ranging component 40 in this application.

[0066] The rotating rod 50 allows the laser ranging component 40 to extend relative to the main body of the column. Thus, when measuring the burial depth of the underground grid, even if the bottom of the column needs to be placed at the edge of the trench, beside the underground grid, or at a relatively stable support point, the laser ranging component 40 can extend above the underground grid via the rotating rod 50, allowing the laser beam to more accurately illuminate the location of the underground grid to be measured. After the rotating rod 50 is rotated to a horizontal position, the measurement direction of the laser ranging component 40 can be vertically downwards, thereby making the obtained vertical distance value closer to the distance in the true depth direction.

[0067] The rotating rod 50 may have a locking structure. This locking structure can be a snap-fit, a spring-loaded locating pin, a knob locking element, a damping shaft, or a toothed limiting structure. When the rotating rod 50 rotates to a horizontal position, the locking structure prevents it from continuing to rotate or falling back, thus avoiding the laser ranging component 40 from deviating from its measurement position due to gravity or impact during the measurement process. After the measurement is completed, the operator can release the locking structure and retract the rotating rod 50 to the side of the column for easy carrying and protection of the laser ranging component 40.

[0068] Handrail 60 can be installed at or near the top of the column, with its height matching the natural grip height of the worker. Handrail 60 is not only used for holding the measuring cane, but also provides support when workers traverse field construction areas. Since transmission line towers and ground grids are often located in mountainous areas, slopes, farmland, woodlands, or temporary construction areas with poor ground flatness, using a measuring tool as a cane reduces the need for workers to carry additional support tools, improving on-site operational convenience.

[0069] The control component 70 can be electrically connected to the ultrasonic transceiver component 30, the laser rangefinder component 40, and the alarm module 80, respectively. The control component 70 can receive distance data output from the ultrasonic transceiver component 30 and vertical distance data output from the laser rangefinder component 40, and display, store, compare, or accumulate this data. The control component 70 can be located near the handrail 60, allowing workers to easily observe the display panel 71 while holding the column, and perform measurement, confirmation, cancellation, accumulation, or reset operations via the control buttons 72.

[0070] The display panel 71 can display one or more of the following: the current measurement segment number, the distance value of the current measurement segment, the vertical distance value of the current measurement point, the preset standard value, the total length value, and the alarm status. The display panel 71 can be an LCD screen, a digital tube screen, or an e-ink screen. For bright light environments, the display panel 71 can have a backlight or high-contrast display mode; for nighttime or low-light environments, the display panel 71 can use backlighting to allow personnel to clearly read the results.

[0071] Control buttons 72 may include a distance measurement button, an increment button, a confirm button, a cancel button, a reset button, and a standard value adjustment button. Operators can initiate a length and depth measurement using the distance measurement button, add the distance value of the current measurement segment to the total length value using the increment button, delete the current erroneous measurement value using the cancel button, and clear historical data and start a new acceptance task using the reset button. The specific number and names of these buttons can be adjusted according to the product design, as long as they enable measurement control, data confirmation, and parameter setting.

[0072] The alarm module 80 can be an audible and visual alarm, or it can include one or more of the following: a buzzer, indicator light, vibrator, or voice prompt unit. When the control component 70 determines that the burial depth of the grounding grid does not meet the preset standard value, the alarm module 80 can emit a sound, flash, or vibration alert. For noisy construction sites, flashing and vibration alerts help workers to perceive the problem promptly; for nighttime acceptance, audible and visual alerts help to quickly locate abnormal measurement points. The alarm signal can also continue until the worker presses the confirmation button to prevent abnormal information from being ignored.

[0073] The ultrasonic transceiver assembly 30 can be disposed in the upper middle part of the first column 10 and the second column 20, and configured at the same height. The ultrasonic transceiver assembly 30 may include an ultrasonic transmitter, a receiver, and a signal processing unit. The transmitter can emit 40kHz directional ultrasonic waves. After the receiver receives the reflected signal, the signal processing unit converts the sound wave propagation time into distance data.

[0074] The laser ranging component 40 can be installed in the lower middle part of the first column 10 and the second column 20, and protrude from the columns so that its laser emission direction is perpendicular to the ground and downwards. The laser ranging component 40 may include a laser emitter, a photoelectric receiver, and a timing module. By measuring the round-trip time difference of the laser, the vertical distance h1 between the laser ranging component 40 and the ground grid is calculated.

[0075] In practical applications, the transmission line grounding grid acceptance measurement cane provided in this embodiment is used in the grounding grid acceptance stage, such as... Figure 2 As shown, the grounding net is buried in a pit in the ground, and before acceptance, the pit is not covered by soil, leaving the grounding net exposed inside. The burial depth h of the grounding net can be directly measured using the laser ranging component 40. One method for calculating the burial depth h provided in this embodiment is to subtract the pole base distance h0 from the vertical distance h1. The pole base distance h0 is the distance between the laser ranging component 40 and the bottom of the column, and this value is a preset value.

[0076] In one embodiment, both the first column 10 and the second column 20 are provided with a rotating rod 50 that can rotate; the laser ranging component 40 is provided on the rotating rod 50; the rotating rod 50 can rotate to a horizontal state.

[0077] The rotating rod 50 can be made of lightweight alloy material, with a length of 15-20cm. One end is hinged to the upper part of the column via a damping rotating shaft. The rotating shaft can be fixed at any angle within the range of 0-90°, ensuring that the rotating rod 50 can stably stay in a horizontal state or in a vertical state that fits against the column. The free end of the rotating rod 50 (the end away from the column in the horizontal state) is provided with a mounting groove, and the laser ranging component 40 is embedded in the mounting groove, with the laser emission direction perpendicular to the length direction of the rotating rod 50.

[0078] In measurement mode: The operator manually rotates the rotating rod 50 to make it rotate around the rotating axis to a horizontal state. At this time, the laser ranging component 40 is away from the main body of the column and is at a preset height above the ground grid (to avoid obstacles such as soil and weeds on the ground from blocking the laser propagation path).

[0079] In the storage state: After the measurement is completed, rotate the rotating rod 50 in the opposite direction to make it fit against the main body of the column. At this time, the laser ranging component 40 is located between the rotating rod 50 and the column, which avoids collision damage during transportation or movement, and at the same time reduces the overall size of the equipment, making it easy to carry.

[0080] In one embodiment, handrails 60 are provided on both the first column 10 and the second column 20.

[0081] The handrail 60 has a non-slip rubber coating and is designed in a circular shape for easy gripping by workers. It is installed on the upper part of the first column 10 and the second column 20. Workers can hold the handrail 60 and use the columns for support while walking, reducing physical exertion.

[0082] In one embodiment, a control component 70 is provided on both the first column 10 and the second column 20.

[0083] The control component 70 may include a main control chip, a storage unit, a power module, and interface circuitry, all integrated into a waterproof and dustproof housing and installed below the handrail 60. The control component 70 is equipped with a switch 73, control buttons 72, a display panel 71, and adjustment buttons 74.

[0084] Using the control button 72 on the control component 70, staff can individually activate or deactivate the ultrasonic transceiver component 30 and the laser ranging component 40 according to on-site measurement needs. Specifically, when staff only need to confirm the burial depth of the ground grid or the location of underground components, they can activate the ultrasonic transceiver component 30 and deactivate the laser ranging component 40 to reduce equipment power consumption and minimize irrelevant data recording. When staff only need to measure the horizontal distance, segment length, or ground grid direction length between adjacent measurement points, they can activate the laser ranging component 40 and deactivate the ultrasonic transceiver component 30 to improve distance measurement efficiency. When it is necessary to simultaneously obtain the burial depth of the ground grid and the measurement segment length, the ultrasonic transceiver component 30 and the laser ranging component 40 can be activated simultaneously, allowing the measuring rod to synchronously collect depth and distance data at the same measurement location or within the same measurement segment.

[0085] Furthermore, the storage unit can record data such as the time of each measurement, measurement point number, measurement segment number, segment length, depth value, measurement mode, equipment status, and abnormal prompts. For ground grids accepted in a segmented manner, the storage unit can associate and save the segment length between two adjacent measurement points with the corresponding depth value, ensuring that each segment of the ground grid has a traceable measurement record. If the measuring cane is also equipped with a positioning module, the storage unit can also synchronously record the location information of the measurement points, facilitating subsequent marking on drawings or acceptance reports.

[0086] By setting up the aforementioned independent control and data storage functions, staff can flexibly select measurement components according to different acceptance tasks, which can reduce unnecessary energy consumption and data redundancy. At the same time, measurement data can be systematically saved, facilitating subsequent review, archiving, generation of acceptance records, and tracking and locating abnormal measurement sections, thereby improving the standardization and traceability of the grounding grid acceptance work.

[0087] In one embodiment, an alarm module 80 is provided on both the first column 10 and the second column 20; the alarm module 80 is electrically connected to the control component 70; the alarm module 80 is used to issue an alarm signal when the vertical distance value is less than a preset standard value.

[0088] The alarm module 80 includes an alarm unit and a drive circuit. It can be installed on the upper part of the column, such as the side of the handrail 60. It is electrically connected to the main control chip of the control component 70 through wires and receives the alarm trigger signal sent by the main control chip.

[0089] The display panel 71 can display the vertical distance value. The control buttons 72 include a start button, an add button, an end button, and a cancel button. The add button can start accumulating the distance values ​​measured by the ultrasonic transceiver component 30; the start button can start calculating the total length of the ground network after all measurement segments have been measured; the end button can reset all measurement results to start a new round of measurement; the cancel button can cancel the current distance measurement result. The adjustment button 74 can control the setting of preset standard values.

[0090] Furthermore, the alarm module 80 is an audible and visual alarm. The alarm module 80 can be electrically connected to the control component 70 and issues a warning signal when measurement data is abnormal, the measurement segment fails to form a valid record, positioning information acquisition fails, power is insufficient, or data storage is abnormal. Specifically, the alarm module 80 may include a buzzer, an indicator light, a voice prompt, or a combination thereof; the buzzer is used to provide an audible alert, and the indicator light can indicate different operating states through different colors, flashing frequencies, or on / off states. For example, when the measurement is completed and the data is valid, the indicator light can display green; when there is poor contact, an abnormal signal, or the measurement result exceeds a preset range, the indicator light can display red and be accompanied by a buzzer. By setting up an audible and visual alarm, staff can promptly obtain information about the equipment status even in outdoor environments with strong light, noise, or multiple people conducting collaborative acceptance, reducing missed measurements, false measurements, or data not being saved.

[0091] Before using the measuring stick of this application, workers can first determine the path of the grounding network to be measured based on the design drawings, construction records, as-built documents, or the exposed state of the grounding network to be inspected. For grounding networks that can be directly observed, the measurement path can be determined based on the actual laying direction of the grounding network; for grounding networks that are obscured by soil, concrete, or other coverings, the direction of the grounding network can be inferred by combining the design drawings, known down conductor locations, grounding terminal locations, and on-site markings, and the measurement points can be planned accordingly.

[0092] If the grounding grid extends in a straight line, workers can set multiple measurement points along the straight path at preset intervals. Alternatively, they can use the start, end, and key intermediate locations of the straight path as measurement points, and consider the portion of the grounding grid between two adjacent measurement points as a measurement segment. The preset intervals can be determined based on acceptance standards, grounding grid length, measurement accuracy requirements, or on-site construction conditions. For example, the grid can be divided at equal intervals, or measurement points can be appropriately added near welding points, overlap points, variable cross-section locations, or suspected defect locations.

[0093] If the grounding grid extends in a zigzag, ring, grid, or radial pattern, each corner point, branch point, intersection point, connection point, lead wire connection location, equipment grounding point, or location of particular concern during acceptance testing can be used as a measurement point, and the portion of the grounding grid between two adjacent measurement points can be considered as a measurement segment. For a ring-shaped grounding grid, measurement segments can be set sequentially along the ring direction to confirm the continuity of the ring path; for a radial grounding grid, measurement segments can be set separately along each radial branch to confirm the connection status between each branch and the main grounding grid; for a grid-shaped grounding grid, measurement segments can be divided sequentially by horizontal, vertical, or zonal methods to form a clear measurement sequence.

[0094] By pre-dividing measurement points and sections before measurement, staff can complete acceptance measurements segment by segment according to the planned path, reducing omissions or repeated measurements caused by on-site judgments. Simultaneously, the measuring stick can record measurement section information, measurement results, and location information, making it easier to generate acceptance records, verify abnormal locations, or locate construction defects later.

[0095] Before measurement, staff can check the power supply, display status, alarm status of the first column 10 and the second column 20, as well as the transmission and reception status of the ultrasonic transceiver assembly 30. If the equipment has a calibration function, staff can place the first column 10 and the second column 20 at a known distance for calibration to confirm that the measurement results of the ultrasonic transceiver assembly 30 match the known distance. For the laser ranging assembly 40, it can also be calibrated by aligning it with a reference plane at a known height to confirm that the vertical distance measurement function is normal.

[0096] During the actual measurement of the first measurement segment, two workers stood at endpoints a and b, respectively, holding the first column 10 and the second column 20. The workers positioned the bases of the two columns at endpoints a and b, and then positioned the two ultrasonic transceiver components 30 approximately opposite each other. After the control component 70 initiated ultrasonic ranging, a non-contact ranging path was formed between the first column 10 and the second column 20. This path does not require the laying of physical measuring components along the ground. Therefore, even if there are mounds of soil, pits, or weeds between endpoints a and b, it will not detour or bend like a measuring tape.

[0097] Simultaneously, the operator can unfold the rotating rod 50, positioning the laser ranging component 40 above and towards the ground grid. The vertical distance measured by the laser ranging component 40 can be used as the basis for depth determination at the corresponding endpoints. If the first column 10 and the second column 20 are both measured at the two endpoints of the same measurement segment, the control component 70 can record the depth data corresponding to endpoint a and endpoint b respectively. In this way, each measurement segment not only has length data but also endpoint depth data, making the acceptance record more complete.

[0098] Once the first measurement segment is completed, it is not necessary for both staff members to move simultaneously. Since the second measurement segment typically shares endpoint b with the first, the staff member at endpoint b can remain in place, while the staff member at endpoint a moves to endpoint c. At this point, endpoints b and c form the second measurement segment. After completing the second measurement segment, the staff member at endpoint b moves to endpoint d, while the staff member at endpoint c remains stationary. This alternating movement method allows for segment-by-segment measurement along the geological grid, reducing redundant positioning and unnecessary movements.

[0099] For a closed loop ground network, the last measurement point can be adjacent to or coincide with the initial endpoint when measuring the last measurement segment. The control component 70 can accumulate the distance values ​​of each measurement segment to obtain the total length of the loop ground network. For a radial ground network, the common connection area near the tower foundation can be used as the starting area, and segmented measurements can be performed along each ray direction. The length of each ray can be recorded separately or accumulated uniformly. Therefore, this application can be applied to various ground network types.

[0100] In some embodiments, the control component 70 can generate a measurement sequence number for each measurement segment. For example, the first measurement segment corresponds to number L1, the second measurement segment corresponds to number L2, and so on. Each number can be associated with information such as distance value, starting depth value, ending depth value, whether it is qualified, and measurement time. When staff subsequently compile and accept the data, they can trace the measurement status of each section of the ground network based on the number.

[0101] When staff discover an anomaly in the data of a measurement segment—for example, if the ultrasonic ranging value is significantly too high or too low, or if the laser ranging component 40 is not aligned with the ground grid, resulting in an abnormal depth value—they can cancel the current measurement result using control button 72 and remeasure the segment. After cancellation, control component 70 can choose not to include the measured value in the total length value, or it can retain the anomaly record for later review. This method reduces the impact of a single erroneous operation on the final acceptance result.

[0102] Regarding depth determination, preset standard values ​​can be set according to different transmission line projects, voltage levels, and grounding grid design requirements. Personnel can input or select this preset standard value via adjustment button 74 before starting acceptance testing. The control component 70 converts the vertical distance value obtained by the laser ranging component 40 into a grounding grid burial depth value and compares it with the preset standard value. If the grounding grid burial depth value does not meet the requirements, the control alarm module 80 issues an alarm signal, and a non-compliance message is displayed on the display panel 71.

[0103] In some implementations, alarm detection can be performed using either a single-point detection or a measurement segment detection. Single-point detection means that an alarm is triggered whenever the burial depth at the current endpoint does not meet the standard. Measurement segment detection means comparing the burial depth at both endpoints of a measurement segment with a preset standard value, and using the smaller value, the average value, or any non-compliant result as the criterion for that measurement segment. The above detection method can be selected according to acceptance specifications or site requirements.

[0104] To improve the stability of measurement results, the control component 70 can also control the ultrasonic transceiver component 30 to continuously measure multiple times in a single measurement operation, and output the final distance value when the difference between multiple measurement results is less than a preset range. If the differences between multiple measurement results are large, it can prompt the staff to check whether the two pillars are aligned, whether there is strong wind interference, or whether there are large obstacles in the ranging path. Similarly, the laser ranging component 40 can also perform multiple samplings and take the average or median of multiple vertical distance values ​​to reduce the impact of instantaneous jitter.

[0105] For measurement scenarios with significant ground slope, workers can ensure the base of the measuring rod aligns with the measurement point and maintains the rod in a near-vertical position when positioning it. If the rod has an attitude indicator, the control component 70 can alert workers to adjust it if the rod tilts excessively. Even without an attitude sensor, workers can reduce tilting errors by manually observing the rod's orientation or horizontal indicator structure. All of the above operations are performed using the same measuring rod, eliminating the need for additional large surveying equipment.

[0106] After the measurement is completed, staff can read the total length of the ground network through the display panel 71 and check the depth compliance of each measurement segment. If the control component 70 has a data export interface, the measurement data can also be exported to a mobile terminal, computer, or acceptance record system. Even without a data export interface, staff can still copy the segment data and total length data item by item according to the display panel 71. Since the control component 70 has already completed the cumulative calculation, the copying process is mainly for archiving, which can reduce the burden of manual calculation.

[0107] The transmission line grounding grid acceptance measurement cane provided in this embodiment may include the following steps SA1 to SA7 when performing measurements:

[0108] SA1. Two staff members respectively acquire the first column 10 and the second column 20, and verify the two-way wireless communication function between the two columns. The rotating rods 50 of the two columns are unfolded, so that the laser emission and reception point of the laser ranging component 40 extends to a preset height above the ground grid. Then, the power switches of the first column 10 and the second column 20 are turned on, and the data transmission link between the two is established through the built-in two-way wireless communication module, completing the equipment initialization before measurement.

[0109] SA2. Preset Burial Depth Standard Value: By adjusting the button 74 on any of the canes, set the preset standard value according to the acceptance requirements of this grounding network. This standard value will be stored in the control component 70 and used as a comparison benchmark for subsequent depth testing to determine whether it is qualified.

[0110] SA3. Initial Segment Length Measurement and Total Length Initialization: Two workers stand at endpoints 1 and 2 of the first measurement segment (endpoints 1 and 2 are the two endpoints of the first measurement segment) along the direction of the ground network. The "add" button on control button 72 is pressed, and the ultrasonic transceiver 30 receives the signal and calculates the distance l0 between endpoints 1 and 2. This distance is the length l of a single segment of the ground network. Simultaneously, the workers measure the burial depth of the ground network at endpoints 1 and 2 using the laser ranging component 40.

[0111] SA4. Alternately move measurement points and accumulate segment lengths: The worker moves to the next measurement segment. For example, Figure 4 As shown, two adjacent measurement segments share a common endpoint. Therefore, one of the endpoints of the second measurement segment coincides with the first measurement segment, meaning the two endpoints of the second measurement segment are endpoint 2 and endpoint 3, with endpoint 2 and endpoint 3 being shared. Thus, when switching measurement segments, the staff member at endpoint 1 can move to endpoint 3, while the staff member at endpoint 2 remains stationary. The process for moving to the third measurement segment is similar; the staff member at endpoint 2 can move to endpoint 4, while the staff member at endpoint 3 remains stationary. This cycle repeats until all measurement segments covering the entire grounding network to be inspected have been measured. Afterward, the staff member presses the start button to accumulate and calculate the total length of the grounding network.

[0112] Among them, endpoint 1, endpoint 2, endpoint 3 and endpoint 4 are respectively as follows: Figure 4 Points a, b, c, and d are shown in the diagram.

[0113] SA5. In step SA4 above, if there is a problem with the measurement of a certain segment length, you can press the Cancel key to remeasure the length of that segment. If you want to remeasure the total length, you can press the End key to reset.

[0114] SA6. After the measurement is completed, turn off the power switch of the measuring stick and put the laser rangefinder assembly 40 away by rotating the rod 50.

[0115] The second aspect of this application provides a method for acceptance measurement of transmission line grounding grids, based on the transmission line grounding grid acceptance measurement stick of any of the above claims, and includes the following steps:

[0116] S1. Move the first column 10 and the second column 20 to the endpoints Sn and Sn+1 of the nth measurement segment, respectively, with the initial value of n being 1.

[0117] S2. Activate the ultrasonic transceiver assembly 30 and the laser ranging assembly 40 on the first column 10 and the second column 20. Measure the distance between the first column 10 and the second column 20 through the ultrasonic transceiver assembly 30, and measure the grounding depth of endpoints Sn and Sn+1 through the laser ranging assembly 40.

[0118] S3. After adding n+1, return to step S1 until all measurement segments have been measured.

[0119] Specifically, as mentioned above, the two endpoints of the first measurement segment are S1 and S2, the two endpoints of the second measurement segment are S2 and S3, the two endpoints of the third measurement segment are S3 and S4, and so on.

[0120] This method, through segmented measurement, enables segmented and continuous measurement of the entire path of the ground network, avoiding the cumbersome steps of traditional measuring tapes such as stretching and retrieving them, thus improving work efficiency. It is also unaffected by terrain interference and reduces measurement errors. During the measurement process, workers can move alternately, reducing the workload.

[0121] Furthermore, the area between S2 and S3 includes:

[0122] S21. Compare the buried depth of the grounding grid with the preset standard value and record the comparison results.

[0123] Step S21 allows for timely determination of the grounding grid's suitability during the measurement process, avoiding the inefficiency caused by making a determination only after all measurements are completed.

[0124] Furthermore, the area between S2 and S3 includes:

[0125] S22. Accumulate and calculate the distance values ​​of each measurement segment to obtain the total length value.

[0126] By performing the cumulative calculation in step S22, the risk of calculation errors caused by manual calculation can be avoided.

[0127] In step S1, the nth measurement segment can be determined based on the actual orientation of the ground network. For a straight segment, endpoints Sn and Sn+1 can be the two ends of the segment; for a broken line segment, endpoints Sn and Sn+1 can be two adjacent turning points; for a curved or irregularly extending ground network, the curve can be approximately divided into multiple short measurement segments, ensuring that both ends of each segment can be stably located by the operator. This segmentation method transforms the overall measurement task of a complex ground network into a distance measurement task between multiple adjacent endpoints.

[0128] In step S2, when the ultrasonic transceiver assembly 30 measures the distance between the first column 10 and the second column 20, the control assembly 70 can control one of the ultrasonic transceiver assemblies 30 to emit an ultrasonic signal, and the other ultrasonic transceiver assemblies 30 to receive the signal; alternatively, both ultrasonic transceiver assemblies 30 can emit and receive signals separately to obtain a bidirectional ranging result. The control assembly 70 can calculate the distance value based on the sound wave propagation time and the speed of sound, and if necessary, can also correct the speed of sound based on the ambient temperature to improve measurement accuracy.

[0129] In step S2, when measuring the ground grid burial depth values ​​of endpoints Sn and Sn+1 using the laser ranging component 40, the rotating rod 50 can be first positioned horizontally, and then the emission direction of the laser ranging component 40 can be directed towards the ground grid below. The laser ranging component 40 measures the vertical distance from itself to the ground grid. The control component 70 can combine this with the installation height of the laser ranging component 40 relative to the bottom of the column to obtain the ground grid burial depth value. If both the first column 10 and the second column 20 are depth-measured, the depth data of endpoints Sn and Sn+1 can be obtained respectively.

[0130] In step S3, "returning to step S1 after n+1" can be understood as updating the measurement segment number to the next measurement segment number and continuing endpoint positioning and measurement according to the updated measurement segment. During the measurement process, the first column 10 and the second column 20 can alternately serve as fixed and moving ends. For example, after measuring the nth measurement segment, the column located at endpoint Sn+1 remains stationary, while the column located at endpoint Sn moves to endpoint Sn+2, thus entering the (n+1)th measurement segment. This method maintains the continuity of the measurement path and reduces the time spent re-finding shared endpoints.

[0131] In step S21, the buried depth value of the grounding network is compared with a preset standard value. This can include comparing the depth value of each endpoint with the preset standard value separately, or comparing the depth values ​​of both endpoints of the same measurement segment with the preset standard value. When any endpoint does not meet the requirements, the control component 70 can mark the measurement segment as unqualified and trigger the alarm module 80. When recording the comparison results, the text result of "qualified" or "unqualified" can be recorded, or the specific depth value and difference can be recorded for subsequent rectification and re-inspection.

[0132] In step S22, when accumulating the distance values ​​of each measurement segment, the control component 70 can automatically add the distance value of each measurement segment to the cumulative value after completion, or it can add the cumulative value after the operator presses the confirmation or accumulation button. Using the confirmation-based accumulation method allows the operator time to check whether the current measurement value is reasonable; using the automatic accumulation method improves the efficiency of continuous measurement. The choice between the two methods can be made based on actual work habits.

[0133] In a specific measurement example, the ground network includes endpoints a, b, c, and d connected sequentially. The operator first places the first post 10 and the second post 20 at endpoints a and b respectively to obtain the distance value of the first measurement segment. Then, the first post 10 at endpoint a is moved to endpoint c, while the second post 20 remains at endpoint b, to obtain the distance value of the second measurement segment. Next, the second post 20 at endpoint b is moved to endpoint d, while the first post 10 remains at endpoint c, to obtain the distance value of the third measurement segment. The control component 70 sums the distance values ​​of the three measurement segments to obtain the total length of the ground network path corresponding to endpoints a to d.

[0134] In the measurement example above, each movement only requires moving one column, while the other column remains at the end position of the previous measurement segment, thus naturally forming a connection between adjacent measurement segments. Compared to measuring with a tape measure, which requires re-pulling, aligning, and taking readings for each segment, this method involves fewer actions and the coordination between the two measuring personnel is clearer.

[0135] The method of this application can also be used for verification measurements. If an alarm is triggered or the length data is abnormal in a certain measurement segment during the initial acceptance, the staff can return to that measurement segment after completing all measurements, and reposition the first column 10 and the second column 20 to the corresponding endpoints, repeating step S2. The control component 70 can replace the original measurement value with the verification measurement value, or it can retain both measurement results for the staff to judge. In this way, the reliability of the acceptance results can be improved.

[0136] In some embodiments, the first column 10 and the second column 20 may also have protective structures. The protective structures may include a protective cover covering the outside of the ultrasonic transceiver assembly 30, a transparent protective sheet covering the outside of the laser ranging assembly 40, a sealing cover disposed on the outside of the control assembly 70, and sealing rings disposed at each electrical connection location. Transmission line grounding grid acceptance is typically conducted in outdoor construction environments, where dust, moisture, mud, or small particles may adhere to the surface of the measuring components. The aforementioned protective structures can reduce the impact of the external environment on the ultrasonic transceiver assembly 30, the laser ranging assembly 40, and the control assembly 70, improving the reliability of the measuring cane in outdoor environments.

[0137] Furthermore, the protective cover on the outside of the ultrasonic transceiver assembly 30 can be equipped with sound wave transmission holes or sound-transmitting areas to allow ultrasonic signals to be transmitted and received normally; the transparent protective sheet on the outside of the laser ranging assembly 40 can be made of transparent plastic, glass, or other light-transmitting materials to allow the laser beam to pass through the transparent protective sheet to reach the grounding grid. The above-mentioned protective structures do not change the measurement functions of the ultrasonic transceiver assembly 30 and the laser ranging assembly 40, but are used to improve the equipment's resistance to contamination and impact.

[0138] In some embodiments, the control component 70 can be configured with a low battery warning function. When the power module's battery level falls below a preset value, the display panel 71 can display a low battery indicator, and the alarm module 80 can emit a short beep or flash a warning. Since grounding grid acceptance work is typically conducted continuously outdoors, a sudden power outage during measurement could lead to data loss or interruption of the acceptance process. Therefore, the low battery warning function reminds personnel to replace or recharge the batteries in a timely manner, ensuring the continuity of the measurement process.

[0139] In some embodiments, the control component 70 can automatically save measurement data after each measurement segment is completed. The saved data may include the measurement segment number, distance value, vertical distance value at the endpoint, preset standard value, comparison result, measurement time, and whether verification was performed. By storing this data, staff can trace the specific details of each measurement segment after acceptance, facilitating the creation of acceptance records. This data recording process can be completed in a local storage unit or transmitted to an external recording device via wired or wireless means.

[0140] In some embodiments, the first column 10 and the second column 20 can exchange measurement data wirelessly. The wireless communication method can be Bluetooth, Wi-Fi, low-power wireless communication, or other short-range communication methods. Through wireless communication, either the first column 10 or the second column 20 can receive the measurement status or results of the other, facilitating the unified display of the distance and depth values ​​of the current measurement segment on a side display panel 71. This communication method is a choice of data transmission format and does not affect the basic concept of endpoint positioning using two columns and measurement using ultrasound and laser.

[0141] In some embodiments, the control component 70 can be configured with measurement stability judgment logic. When the operator presses the measurement button, the control component 70 can first determine whether the ultrasonic ranging value is stable within a preset time. If the fluctuation of multiple consecutive measurement values ​​is small, the stable value is taken as the distance value of the current measurement segment; if the fluctuation of multiple consecutive measurement values ​​is large, the display panel 71 can prompt "realign" or "remeasure". The same or similar stability judgment logic can also be used for the vertical distance value obtained by the laser ranging component 40. This method can reduce abnormal data caused by operator hand shaking, temporary obstruction, or deviation of the ranging direction.

[0142] In some embodiments, the ground grid acceptance measurement cane can be stored after measurement. During storage, the operator can deactivate the control component 70 and retract the rotating rod 50, bringing the laser ranging component 40 close to or against the column body; if the handrail 60 has a folding structure, it can also be adjusted to a position close to the column. The stored first column 10 and second column 20 can be carried using straps, buckles, or a storage bag. This storage structure reduces the risk of collisions with the laser ranging component 40, ultrasonic transceiver component 30, and display panel 71 during transportation.

[0143] In some embodiments, the first column 10 and the second column 20 can also be used in conjunction with on-site markers. For example, when the alarm module 80 indicates that a certain measurement point or measurement segment does not meet the burial depth requirements, workers can insert a marker flag, spray a marker, or record the corresponding measurement segment number at that location. Since the control component 70 can display the current measurement segment number and endpoint information, workers can associate the on-site markers with the measurement data, facilitating subsequent construction rectification or re-inspection.

[0144] In some embodiments, the measuring cane can also be used to switch between different measuring paths. When the ground network includes multiple branches, workers can first complete segmented measurements along one branch and save the data, and then start measuring another branch by resetting or creating a new measurement task. Different branches can generate total length values ​​separately, or they can be accumulated uniformly during final acceptance. Thus, the measurement method of this application is not only applicable to single-path ground networks, but also to ground network structures with multiple branches or multiple closed regions.

[0145] In some embodiments, the preset standard value may include a fixed depth threshold or multiple depth thresholds corresponding to different locations. For example, in some projects, the required depth of the ground grid burial may differ in different areas, and workers can switch the corresponding preset standard value before measuring different areas. The control component 70 compares the preset standard value with the currently selected one, thereby avoiding misjudgment caused by using the same standard to judge all areas. The above settings improve the adaptability of the measuring stick to different acceptance specifications and different construction areas.

[0146] In some embodiments, the display panel 71 may also display operation prompts. For example, it may display "Waiting for connection" when the communication connection between the two columns is not completed, "Adjust direction" when the ultrasonic transceiver assembly 30 is not aligned, "Saved" when the current measurement segment has been accumulated, and "Cancelled" when the current measurement value is cancelled. These operation prompts can reduce the reliance of staff on instruction manuals or operation manuals, making the on-site measurement process more intuitive.

[0147] In some embodiments, if the operator only needs to measure length and not depth, the laser ranging component 40 can be turned off or the alarm module 80 can be disabled; if the operator only needs to verify the depth of certain suspicious locations, only the laser ranging component 40 can be turned on to measure vertical distance. In other words, the ultrasonic transceiver component 30 and the laser ranging component 40 in this application can be used together or selectively according to on-site needs. When used together, length and depth data can be obtained simultaneously; when used selectively, the flexibility of the equipment in different acceptance tasks can be improved.

[0148] In some embodiments, the first column 10 and the second column 20 can be paired at the factory or before use via the control component 70. The paired columns can establish a unique or relatively fixed communication relationship, avoiding data crosstalk when multiple sets of measuring poles exist at the same construction site. If multiple groups of workers are simultaneously measuring different ground grid areas, each set of measuring poles can be distinguished by different communication numbers or different working channels.

[0149] As can be seen from the above specific embodiments, this application does not simply use ultrasonic ranging equipment and laser ranging equipment side by side, but integrates them into a first column 10 and a second column 20 suitable for field walking and endpoint positioning. This allows workers to use the bottom of the column as a reference point for measurement, complete non-contact length measurement between adjacent measurement points using the ultrasonic transceiver component 30, and complete the measurement of the ground grid burial depth at the same measurement point using the laser ranging component 40. This structure and method work together to enable endpoint positioning, length measurement, depth judgment, abnormal alarm, and length accumulation during the ground grid acceptance process to be completed using the same set of tools, thereby improving the continuity and convenience of on-site acceptance.

[0150] In summary, the transmission line grounding grid acceptance measurement stick and method provided in this application integrates functions such as grounding grid length measurement, grounding grid burial depth measurement, measurement result display, abnormal alarm, and segment length accumulation into a single portable measuring tool. By moving the first column 10 and the second column 20 to different measurement points and using the ultrasonic transceiver component 30 to measure the distance between them, the problems of traditional tape measure measurement, such as the need to lay the tape close to the ground, cross obstacles, or manually straighten it, are avoided. This reduces the impact of complex terrain such as piles of soil, pits, weeds, and slopes on the measurement results, improving the accuracy and convenience of grounding grid segment length measurement. By setting laser ranging components 40 on the first column 10 and the second column 20, grounding grid burial depth data can be acquired simultaneously near the same measurement endpoint. This reduces the need for staff to repeatedly switch between length and depth measuring tools, and also reduces data deviation caused by repeated positioning, allowing length and depth data to better correspond to the same measurement location. By setting up control component 70, display panel 71, and control buttons 72, measurement data can be displayed, confirmed, canceled, accumulated, and reset, reducing the risk of errors caused by manual recording and calculation, and improving the efficiency of acceptance data processing. By setting up alarm module 80, timely prompts can be issued when the grounding grid burial depth does not meet the preset standard value, enabling staff to quickly identify abnormal measurement points on-site, facilitating subsequent marking, verification, and rectification. Furthermore, the first column 10 and the second column 20 can themselves serve as support tools for staff walking and positioning in the field, suitable for common outdoor, sloping, soil, or vegetated environments in transmission line grounding grid acceptance. Therefore, this application can improve the automation level, on-site adaptability, and measurement reliability of grounding grid acceptance measurements, reduce workload, shorten acceptance time, and help improve the accuracy and traceability of transmission line grounding facility acceptance results.

[0151] The above are merely preferred embodiments of this application and are not intended to limit the present invention. Although this application has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A measuring stick for acceptance testing of power transmission line grounding grids, characterized in that, include: First column (10) and second column (20); Both the first column (10) and the second column (20) are provided with an ultrasonic transceiver assembly (30) and a laser ranging assembly (40). The distance between the first column (10) and the second column (20) can be measured by the ultrasonic transceiver assembly (30); The first column (10) and the second column (20) can measure the vertical distance between the laser ranging component (40) and the ground grid through the laser ranging component (40); The first column (10) and the second column (20) are used to move to different measurement points to measure the distance values ​​between the different measurement points.

2. The power transmission line grounding grid acceptance measurement stick according to claim 1, characterized in that, Both the first column (10) and the second column (20) are provided with a rotating rod (50) that can rotate. The laser ranging component (40) is mounted on the rotating rod (50); The rotating rod (50) can be rotated to a horizontal position.

3. The power transmission line grounding grid acceptance measurement stick according to claim 1, characterized in that, Handrails (60) are provided on both the first column (10) and the second column (20).

4. The power transmission line grounding grid acceptance measurement stick according to claim 1, characterized in that, Both the first column (10) and the second column (20) are provided with control components (70).

5. The power transmission line grounding grid acceptance measurement stick according to claim 4, characterized in that, An alarm module (80) is provided on both the first column (10) and the second column (20). The alarm module (80) is electrically connected to the control component (70); The alarm module (80) is used to issue an alarm signal when the vertical distance value is less than a preset standard value.

6. The transmission line grounding grid acceptance measurement stick according to claim 5, characterized in that, The control component (70) is provided with a display panel (71) and control buttons (72); The control button (72) can adjust the value of the preset standard value.

7. The power transmission line grounding grid acceptance measurement stick according to claim 5, characterized in that, The alarm module (80) is an audible and visual alarm.

8. A method for acceptance measurement of transmission line grounding grid, characterized in that, Based on the transmission line grounding grid acceptance measurement stick according to any one of claims 1 to 7, and including the following steps: S1. Move the first column (10) and the second column (20) to the endpoint S of the nth measurement segment, respectively. n and endpoint S n+1 The initial value of n is 1; S2. Activate the ultrasonic transceiver assembly (30) and laser ranging assembly (40) on the first column (10) and the second column (20), measure the distance between the first column (10) and the second column (20) using the ultrasonic transceiver assembly (30), and measure the distance between the endpoint S using the laser ranging assembly (40). n and the endpoint S n+1 The depth value of the grounding grid; S3. After n+1, return to step S1 until all the measurement segments have been measured.

9. The method for acceptance measurement of transmission line grounding grid according to claim 8, characterized in that, Between S2 and S3, there is: S21. Compare the buried depth value of the grounding grid with the preset standard value and record the comparison result.

10. The method for acceptance measurement of transmission line grounding grid according to claim 8, characterized in that, Between S2 and S3, there is: S22. Accumulate and calculate the distance values ​​of each of the measured segments to obtain the total length value.

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