Non-contact wire diameter measuring method, system and equipment for overhead wire of distribution network and medium

Abstract

The invention relates to the technical field of distribution network overhead line diameter measurement, in particular to a distribution network overhead line non-contact type line diameter measurement method, system and device and a medium, and the method comprises the steps: operating a laser ranging head through an insulating operating rod, and carrying out the non-contact positioning of a charged overhead line to be measured through an insulating positioning structure on the laser ranging head; the laser ranging head is started, so that the laser ranging head emits laser to the surface of the overhead line and receives reflected light, an original measurement signal is obtained based on the triangulation ranging principle, and measurement data containing the original measurement signal are sent in a wireless communication mode; and the remote terminal receives the measurement data, decodes the original measurement signal, and calculates the wire diameter value of the overhead wire based on a preset measurement model. The beneficial effects of the invention are that through the non-contact laser measurement technology, safe, efficient and accurate measurement and intelligent data management of the wire diameter of the distribution network overhead wire are realized, the climbing electric shock risk is thoroughly eliminated, and the operation and maintenance efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of overhead power line diameter measurement technology, and in particular to a non-contact method, system, equipment and medium for measuring the diameter of overhead power lines in distribution networks. Background Technology

[0002] Currently, the measurement of overhead power distribution line diameter relies on manual, high-altitude contact work, which not only carries a high risk of electric shock and falls and incurs high protection costs, but also depends entirely on caliper readings by eye, which leads to large errors and low efficiency due to differences in angle, lighting, and experience. More importantly, traditional methods can only obtain isolated data and lack long-term continuous monitoring capabilities, making it impossible to track cable aging and deformation trends to support preventive maintenance. In addition, in live environments, they are susceptible to electromagnetic interference, on-site vibration, and weather conditions, and the stability and repeatability of data are insufficient when performing non-contact measurements. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides the following technical solution: In a first aspect, the present invention provides a non-contact wire diameter measurement method for overhead power distribution lines, comprising operating a laser ranging head through an insulated operating rod and using the insulated positioning structure on the laser ranging head to perform non-contact positioning of the energized overhead power line to be measured; The laser rangefinder is activated to emit a laser beam toward the surface of the overhead line and receive the reflected light. Based on the principle of triangulation, the original measurement signal is obtained, and the measurement data containing the original measurement signal is transmitted wirelessly. The remote terminal receives measurement data, decodes the original measurement signal, and calculates the wire diameter value of the overhead line based on the preset measurement model. The wire diameter value is output based on the remote terminal.

[0004] As a preferred embodiment of the non-contact wire diameter measurement method for overhead power distribution lines of the present invention, the insulating positioning structure is an insulating groove provided on the laser ranging head; The laser ranging head is operated via an insulated operating rod, and its insulated positioning structure allows for non-contact positioning of the energized overhead line under test. This includes... By adjusting the angle and position of the insulating operating rod, the overhead line is inserted into the insulating groove, and the overhead line is positioned and aligned while maintaining a safe distance.

[0005] As a preferred embodiment of the non-contact wire diameter measurement method for overhead power distribution lines of the present invention, the measurement data is a data set organized and encapsulated according to a specific frame format; The measurement data also includes system identification parameters associated with the original measurement signals.

[0006] As a preferred embodiment of the non-contact wire diameter measurement method for overhead power distribution lines of the present invention, the method includes: a remote terminal receiving measurement data, decoding the original measurement signal, and calculating the wire diameter value of the overhead power line based on a preset measurement model, including: The received measurement data is parsed according to the frame format corresponding to the sending end, its integrity is verified, and the valid original measurement signals and related system parameters are extracted. The measurement distance is calculated based on the original measurement signal and related system parameters, and the wire diameter value is derived through geometric model calculation by combining the pre-stored mechanical structure parameters of the device. The results of multiple calculations are filtered to output the final wire diameter value.

[0007] As a preferred embodiment of the non-contact wire diameter measurement method for overhead power distribution lines of the present invention, the wireless communication adopts a low-power wireless protocol with a link layer verification mechanism to verify the integrity of the measurement data during transmission.

[0008] As a preferred embodiment of the non-contact wire diameter measurement method for overhead power distribution lines of the present invention, wherein: based on the wire diameter value output by a remote terminal, including, The wire diameter value is displayed in real time in digital form on the display interface of the remote terminal; The remote terminal also provides a historical data query function, which can display the trend of wire diameter change at the same measurement point in the form of charts.

[0009] As a preferred embodiment of the non-contact wire diameter measurement method for overhead power distribution lines of the present invention, the method further includes: The calculated wire diameter value is compared with a preset threshold range; If the wire diameter exceeds the threshold range, an alarm will be triggered on the display interface to alert the operator that the measurement result is abnormal.

[0010] Secondly, the present invention provides a non-contact wire diameter measurement system for overhead power distribution lines, comprising: a positioning module for operating a laser ranging head via an insulated operating rod, and using the insulated positioning structure on the laser ranging head to perform non-contact positioning of the energized overhead power line to be measured; The acquisition and transmission module is used to activate the laser rangefinder head, which emits a laser beam toward the surface of the overhead line and receives the reflected light. Based on the principle of triangulation, it obtains the original measurement signal and transmits the measurement data containing the original measurement signal through wireless communication. The receiving and calculation module is used to receive measurement data from the remote terminal, decode the original measurement signal, and calculate the wire diameter value of the overhead line based on the preset measurement model. Output module, used to output wire diameter value based on remote terminal.

[0011] Thirdly, the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method described above.

[0012] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method described above.

[0013] Compared with existing technologies, the beneficial effects of this invention are as follows: By employing an insulated operating rod combined with laser non-contact measurement, operators can complete the entire measurement process from the ground, completely eliminating the two major risks of electric shock and falls from height associated with traditional high-altitude contact operations, thus achieving safe live-line measurement of power distribution networks. Furthermore, by automating the entire process from data acquisition, transmission, and processing to display, subjective errors introduced by manual readings and calculations are completely avoided, ensuring high accuracy and consistency of measurement results. At the same time, the time required for a single measurement is significantly reduced, significantly improving operation and maintenance efficiency. Even further, all records are timestamped and can be linked to location information, forming a traceable digital archive. This makes long-term continuous monitoring and trend analysis of cable diameter possible, providing a crucial data foundation for assessing cable mechanical condition, predicting potential risks, and developing preventative maintenance strategies, thus promoting a shift in operation and maintenance models from post-inspection to pre-emptive warning. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a flowchart illustrating the non-contact wire diameter measurement method for overhead power distribution lines.

[0016] Figure 2 This is a schematic diagram of the laser rangefinder and the insulating groove.

[0017] Figure 3 This is a schematic diagram of a plum blossom joint.

[0018] Figure 4 This is a schematic diagram showing the connection between the laser rangefinder and the remote terminal. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] Example 1, referring to Figure 1 This is the first embodiment of the present invention, which provides a non-contact method for measuring the wire diameter of overhead power distribution lines, including: S100: The laser rangefinder is operated by an insulated operating rod, and the insulated positioning structure on the laser rangefinder is used to perform non-contact positioning of the energized overhead line to be tested. S200: Activate the laser rangefinder head to emit a laser beam toward the surface of the overhead line and receive the reflected light. Obtain the original measurement signal based on the triangulation principle and transmit the measurement data containing the original measurement signal via wireless communication. S300: The remote terminal receives measurement data, decodes the original measurement signal, and calculates the wire diameter value of the overhead line based on the preset measurement model; S400: Outputs wire diameter value based on remote terminal.

[0021] It should be noted that overhead power distribution lines operate in complex outdoor environments for extended periods. Affected by multiple factors such as electrothermal effects, mechanical loads, and environmental erosion, their wire diameter may undergo slow deformation, directly impacting the line's safe current-carrying capacity and mechanical strength. Traditional measurement methods often rely on manual climbing and the use of contact tools, which not only carries high operational risks and low efficiency but also makes it difficult to obtain accurate data stably and continuously under energized conditions. Furthermore, it is impossible to generate structured historical records that can be used for trend analysis and preventative maintenance.

[0022] Therefore, this method achieves safe, non-contact positioning by utilizing an insulated operating structure and remote ground control, eliminating the risk of electric shock and falls at the source. Furthermore, it achieves automatic acquisition and remote transmission of wire diameter signals through laser triangulation and wireless transmission technology. The measurement model built into the terminal then performs automatic calculation and processing, suppressing human error and environmental interference, and outputting accurate and consistent wire diameter values. Finally, the measurement results are presented through the terminal, providing a reliable data foundation for line condition assessment and preventive maintenance.

[0023] Example 2, refer to Figures 1-4 As an embodiment of the present invention, based on the above embodiment, a non-contact wire diameter measurement method for overhead power distribution lines is provided.

[0024] In this embodiment of the application, step S100 involves operating the laser ranging head via an insulated operating rod, and using the insulated positioning structure on the laser ranging head to perform non-contact positioning of the energized overhead line under test, including the following steps A1-A2: Understandably, the laser rangefinder contains a laser emitter and a high-sensitivity photoelectric receiver, which are protected by an insulating shell to ensure electrical isolation from the charged environment.

[0025] A1: The insulating positioning structure is an insulating groove set on the laser rangefinder head.

[0026] It should be noted that the insulating groove, such as Figure 2 As shown, it is used to guide the wire into a relatively fixed spatial position to reduce the large displacement of the measurement point caused by the swaying of the wire or the slight vibration of the operating rod. During use, the ground personnel use the insulated operating rod to "fit" the groove onto the wire in the air.

[0027] A2: By adjusting the angle and position of the insulating operating rod, the overhead line is inserted into the insulating groove, and the overhead line is positioned and aligned while maintaining a safe distance.

[0028] It should be noted that the insulating operating rod and the laser rangefinder are detachably connected. Specifically, this can be achieved by connecting the lower end of the laser scanning head to the upper end of the commonly used insulating rod (e.g., ...). Figure 3 (As shown), then use screws or fish-tail screws to install or remove both.

[0029] Specifically, the operator first installs the insulated operating rod and the laser rangefinder head. Holding the insulated rod, the operator observes the relative position of the high-level wire and the groove of the laser head, and fine-tunes the spatial attitude of the laser head by moving, raising, and rotating the insulated rod. When the wire stably falls into the groove, the operator keeps the rod stable.

[0030] Preferably, this step establishes a reliable physical insulation barrier between the operator, the insulated operating rod, the laser rangefinder, and the live wire.

[0031] In this embodiment of the application, step S200 involves activating the laser rangefinder head to emit a laser beam toward the surface of the overhead line and receive the reflected light. Based on the principle of triangulation, the original measurement signal is obtained, and the measurement data containing the original measurement signal is transmitted wirelessly. This includes the following steps B1-B3: Specifically, a laser beam with a stable wavelength and concentrated energy is emitted onto the surface of the overhead cable under test via a laser emitter. This laser beam, projected onto the cable surface at a specific incident angle, is reflected, and the reflected light is captured by a high-sensitivity photodetector located within the same module. To clearly describe this process, the laser emission point is defined as O, the reflection point on the cable surface is defined as P, and the corresponding image point on the receiver is defined as Q. This emission-reflection-reception optical link constitutes the physical basis of non-contact distance measurement and is also the source of all subsequent signal processing and data calculations. Figure 4 As shown, the laser emitter, the optical center of the receiving lens, and the point under test form a triangle. The laser emits a beam at a fixed angle θ to the receiving optical axis, illuminating point P on the cable surface. The reflected light passes through the receiving lens and converges into a spot on the PSD sensor behind it. The position of the spot on the imaging surface changes as the distance from the cable surface changes. A linear displacement will occur.

[0032] Based on the similar triangle theorem, the formula for calculating the distance can be derived: In the formula: d is the vertical or normal distance from the laser head to the cable surface; The baseline length is the physical distance between the laser emission point and the optical center of the receiving lens. This value is a structural constant of the system, and its stability directly determines the measurement accuracy. The focal length of the receiving lens determines the magnification and field of view of the optical system. The displacement of the light spot on the imaging surface can be captured in real time by a high-precision image sensor or position detector. The angle between the laser incident direction and the optical axis of the receiving system is a preset system design parameter.

[0033] B1: The measurement data also includes system identification parameters associated with the original measurement signal.

[0034] B2: Measurement data is a collection of data organized and encapsulated according to a specific frame format.

[0035] It should be noted that after acquiring the raw signal, the laser rangefinder does not directly transmit the signal value. Instead, it sequentially fills the signal value, its own system identification parameters read from memory, and the real-time generated timestamp into the various fields of the frame according to a pre-designed frame structure template, combining them into a complete, formatted data block (packet) before sending it. Specifically, the transmitted data packet is a structured collection of information, mainly covering the following four categories: First, the core raw displacement signal, specifically the pixel coordinate values ​​formed by the light spot on the photoelectric sensor or its corresponding analog voltage value; second, the system parameter identifiers used for backend calculation, which includes key geometric parameters of the device predetermined at the factory or during calibration, such as the baseline length. L Focal length of the receiving lens f and the fixed angle of laser incidence θ These parameters form the basis for the terminal to perform distance verification and real-time calculation; thirdly, there are timestamps and unique serial numbers used for data management, which together ensure the timing accuracy of the data stream and support measurement synchronization between multiple devices as well as accurate tracing of historical measurement records; fourthly, there are status flags that reflect the module's own operating status, whose information range covers real-time battery power, current wireless link signal strength, module operating mode, and possible abnormal diagnostic codes.

[0036] B3: The wireless communication uses a low-power wireless protocol with a link layer verification mechanism to verify the integrity of the measurement data during transmission.

[0037] Specifically, the protocol incorporates mechanisms for frame structure verification, reception acknowledgment, and automatic retransmission within a limited number of times. This ensures the integrity of data transmission in open wireless channels and end-to-end communication reliability while balancing system power consumption and real-time response.

[0038] In an optional implementation, the measurement data containing the original measurement signal in step S200 can also be transmitted via LoRa (long-range radio) communication. That is, a LoRa wireless module is integrated into the laser rangefinder. This module modulates the packaged measurement data on a specific frequency band and transmits it to a remote LoRa gateway or directly to a mobile terminal equipped with a LoRa receiver module in a low-power, high-penetration manner.

[0039] In another optional implementation, the measurement data containing the original measurement signal in step S200 can also be sent via near-field communication, that is: an NFC or RFID tag chip is integrated into the laser rangefinder to write the measurement data into the chip's storage area; after the measurement is completed, the operator brings the laser rangefinder close to or lightly touches a remote terminal equipped with a corresponding card reader, and the terminal automatically reads the measurement data stored in the chip through near-field sensing.

[0040] In this embodiment of the application, in step S300, the remote terminal receives measurement data, decodes the original measurement signal, and calculates the wire diameter value of the overhead line based on a preset measurement model, including the following steps C1-C3: C1: Parse the received measurement data according to the frame format corresponding to the sending end, verify its integrity, and extract the valid original measurement signal and related system parameters.

[0041] For example, when sending the data frame organized in step B2, the protocol calculates a checksum (such as CRC) based on the frame content and appends it to the end of the frame. Upon receiving the frame, the receiving end calculates the checksum using the same algorithm and compares it with the received checksum. If they match, the receiving end replies with an "ACK" to the sending end; if they do not match, the receiving end discards the frame and may not reply or may reply with a "NAK". If the sending end does not receive an ACK within a specified time, it considers the transmission to have failed and will automatically retransmit the data frame.

[0042] It should be noted that the extracted payload specifically includes key information such as the original displacement signal, system parameter identifiers, and timestamps, which are then converted into an internally processable digital format to provide a clean and reliable data source for subsequent calculations.

[0043] In an optional implementation, the extraction of valid raw measurement signals and related system parameters in step C1 can also be achieved through a feature-guided streaming parsing method. That is, when the transmitting end organizes the measurement data, it inserts a unique and agreed-upon feature code identifier before the data segments of the raw measurement signals and various system parameters. After the receiving end acquires the wireless data stream, it does not rely on a strict overall frame format, but continuously scans the data stream, locates the starting boundaries of various data types by identifying the feature codes, and then reads the bytes of a predetermined length after the feature codes as valid data content, thereby extracting the raw measurement signals and various system parameters in sequence.

[0044] In another optional implementation, the extraction of valid original measurement signals and related system parameters in step C1 can also be achieved through the decryption of encrypted data packets. Specifically, after encapsulating the measurement data, the sending end encrypts the entire data packet using a preset key before sending it. After receiving the data, the receiving end first decrypts the encrypted data packet using the corresponding key to restore the complete original data packet. Then, it parses the decrypted plaintext data according to the agreed internal data structure (e.g., TLV format or simple sequential arrangement) to separate and read the original measurement signals and system parameters.

[0045] C2: The measurement distance is calculated based on the original measurement signal and related system parameters, and the wire diameter value is derived through geometric model calculation by combining the pre-stored mechanical structure parameters of the device.

[0046] Specifically, in obtaining reliable displacement signals After determining the coordinates or voltage value of the light spot on the sensor, the terminal calculates the distance using the laser triangulation principle, substituting pre-stored system geometric parameters or those transmitted with the data packet. The core calculation formula is as follows: In the formula: L This is the baseline length between the laser emission point and the optical center of the receiving lens. f The focal length of the receiving lens, θ It is a fixed angle between the laser emission direction and the receiving optical axis.

[0047] That is, by the displacement amount Mapped to distance in real space d This completes the conversion from two-dimensional image plane information to three-dimensional spatial distance.

[0048] Furthermore, after obtaining the distance d Then, combining the mechanical structure parameters of the measuring device, the actual diameter D of the cable is calculated through geometric modeling. The specific model expression is as follows: In the formula: r0 represents the fixed offset of the laser head from the reference surface of the insulating groove; h is the design distance from the geometric center of the groove to the laser measurement reference surface; α is the incident angle of the laser beam relative to the normal of the cable surface; Δd ​​is the compensation amount introduced based on environmental factors such as temperature and vibration (which can be obtained through calibration or sensor feedback).

[0049] Preferably, the above model realizes the derivation from single-point distance information to the overall diameter of the cable, which is a key link to ensure that the measurement results are consistent with the actual physical dimensions.

[0050] C3: Filter the results of multiple calculations to output the final wire diameter value.

[0051] Understandably, to improve the robustness and reliability of the output results, when continuous measurement is permissible, the wire diameter values ​​obtained from multiple acquisitions and calculations can be subjected to moving average or median filtering to suppress random errors and eliminate gross errors caused by transient interference. Simultaneously, based on the dispersion of the measurement sequence or the model residuals, the uncertainty of the measurement can be estimated or a confidence interval can be output, thus providing users with a quantitative reference regarding data reliability and assisting them in making engineering judgments.

[0052] In an optional implementation, the wire diameter value of the overhead line calculated in step S300 can also be obtained through contour extraction assisted by AI image recognition. That is, the remote terminal calls its built-in camera to capture the real-time image of the laser rangefinder head pointing at the overhead line, and automatically identifies and locates the cable contour in the image through the trained target detection model. At the same time, combined with the distance information corresponding to the original measurement signal uploaded by the laser rangefinder module and the camera calibration parameters, the actual diameter of the cable in the real world is calculated using the principle of perspective projection geometry.

[0053] In another optional implementation, the overhead line diameter value calculated in step S300 can also be obtained indirectly through multi-sensor fusion. The specific process is as follows: a miniature ultrasonic sensor is integrated into the laser ranging module. While the laser is measuring distance, the ultrasonic sensor emits sound waves to the same measurement point and receives the echoes to obtain the sound wave flight time data. The remote terminal simultaneously receives the two types of raw signals, laser and ultrasound, and calculates two distance values ​​based on the speed of light and the speed of sound, respectively. A more stable and interference-resistant distance estimate is obtained through a data fusion algorithm (such as weighted average or Kalman filtering). Combined with the preset device structural parameters and geometric model, the overhead line diameter value is finally calculated.

[0054] In this embodiment of the application, step S400, based on the wire diameter value output by the remote terminal, includes the following steps D1-D2: D1: Display the wire diameter value in digital form in real time on the display interface of the remote terminal, and associate the wire diameter value with the corresponding measurement time and location information and save it to the local database. It should be noted that the remote terminal also provides a historical data query function, which can display the trend of wire diameter change at the same measurement point in the form of charts.

[0055] D2: Compare the calculated wire diameter value with the preset threshold range. If the wire diameter value exceeds the threshold range, trigger an alarm on the display interface to alert the operator that the measurement result is abnormal.

[0056] Understandably, the preset threshold range can be set individually according to actual needs, and is not limited here. Furthermore, when the wire diameter value exceeds the threshold range, an alarm is triggered on the display interface, such as alternating flashing in the core area of ​​the interface accompanied by a continuous alarm sound, to ensure that abnormalities can be detected in a timely and accurate manner, effectively preventing missed detections.

[0057] It should be noted that the remote terminal supports Bluetooth wireless communication and can export the stored historical records in common formats such as CSV or Excel to generate structured measurement reports, establishing a complete and traceable data archive for line status analysis, archiving audits, and preventive maintenance.

[0058] In summary, the beneficial effects of this invention's non-contact wire diameter measurement method for overhead power distribution lines are as follows: By employing an insulated operating rod combined with laser non-contact measurement, operators can complete the entire measurement process from the ground, completely eliminating the two major risks of electric shock and falls from height associated with traditional high-altitude contact operations, thus ensuring safe live-line measurement of power distribution networks. Furthermore, by automating the entire process from data acquisition, transmission, and processing to display, subjective errors introduced by manual readings and calculations are completely avoided, ensuring high accuracy and consistency of measurement results. Simultaneously, the time required for a single measurement is significantly reduced, significantly improving operation and maintenance efficiency. Moreover, all records are timestamped and can be linked to location information, forming a traceable digital archive. This makes long-term continuous monitoring and trend analysis of line diameter possible, providing a crucial data foundation for assessing cable mechanical condition, predicting potential risks, and developing preventative maintenance strategies, thus promoting a shift in operation and maintenance models from post-inspection to pre-emptive warning.

[0059] Example 3 illustrates a schematic scheme for a non-contact wire diameter measurement method for overhead distribution lines. It should be noted that the technical solution of this non-contact wire diameter measurement system for overhead distribution lines is based on the same concept as the aforementioned non-contact wire diameter measurement method. Details not described in detail in this example can be found in the description of the aforementioned non-contact wire diameter measurement method.

[0060] This embodiment also provides a non-contact wire diameter measurement system for overhead power distribution lines, including: The laser rangefinder is operated by an insulated operating rod, and the insulated positioning structure on the laser rangefinder is used to perform non-contact positioning of the energized overhead line to be tested. The laser rangefinder is activated to emit a laser beam toward the surface of the overhead line and receive the reflected light. Based on the principle of triangulation, the original measurement signal is obtained, and the measurement data containing the original measurement signal is transmitted wirelessly. The remote terminal receives measurement data, decodes the original measurement signal, and calculates the wire diameter value of the overhead line based on the preset measurement model. The wire diameter value is output based on the remote terminal.

[0061] This embodiment also provides an electronic device suitable for non-contact wire diameter measurement of overhead power distribution lines, comprising: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement the non-contact wire diameter measurement method for overhead power distribution lines as proposed in the above embodiment.

[0062] This embodiment also provides a storage medium storing a computer program that, when executed by a processor, implements the non-contact wire diameter measurement method for overhead power distribution lines as proposed in the above embodiments.

[0063] The storage medium proposed in this embodiment belongs to the same inventive concept as the non-contact wire diameter measurement method for overhead power distribution lines proposed in the above embodiments. Technical details not described in detail in this embodiment can be found in the above embodiments, and this embodiment has the same beneficial effects as the above embodiments.

[0064] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A non-contact method for measuring the wire diameter of overhead power distribution lines, characterized in that: include, The laser ranging head is operated by an insulated operating rod, and the insulated positioning structure on the laser ranging head is used to perform non-contact positioning of the energized overhead line to be tested. The laser rangefinder is activated to emit a laser beam toward the surface of the overhead line and receive the reflected light. Based on the principle of triangulation, the original measurement signal is obtained, and the measurement data containing the original measurement signal is transmitted wirelessly. The remote terminal receives the measurement data, decodes the original measurement signal, and calculates the wire diameter value of the overhead line based on a preset measurement model. The wire diameter value is output based on the remote terminal.

2. The non-contact wire diameter measurement method for overhead power distribution lines as described in claim 1, characterized in that: The insulating positioning structure is an insulating groove provided on the laser rangefinder head; The method of operating the laser ranging head via an insulated operating rod, and using the insulated positioning structure on the laser ranging head to perform non-contact positioning of the energized overhead line under test, includes: By adjusting the angle and position of the insulating operating rod, the overhead line is inserted into the insulating groove, and the overhead line is positioned and aligned while maintaining a safe distance.

3. The non-contact wire diameter measurement method for overhead power distribution lines as described in claim 2, characterized in that: The measurement data is a data set organized and encapsulated according to a specific frame format; The measurement data also includes system identification parameters associated with the original measurement signal.

4. The non-contact wire diameter measurement method for overhead power distribution lines as described in claim 3, characterized in that: The remote terminal receives the measurement data, decodes the original measurement signal, and calculates the wire diameter value of the overhead line based on a preset measurement model. include, The received measurement data is parsed according to the frame format corresponding to the sending end, its integrity is verified, and the valid original measurement signal and related system parameters are extracted. The measurement distance is calculated based on the original measurement signal and related system parameters, and the wire diameter value is derived through geometric model calculation by combining the pre-stored device mechanical structure parameters. The results of multiple calculations are filtered to output the final wire diameter value.

5. The non-contact wire diameter measurement method for overhead power distribution lines as described in claim 4, characterized in that: The wireless communication employs a low-power wireless protocol with a link-layer verification mechanism to verify the integrity of the measurement data during transmission.

6. The non-contact wire diameter measurement method for overhead power distribution lines as described in claim 5, characterized in that: The step of outputting the wire diameter value based on the remote terminal includes, The wire diameter value is displayed in real time in digital form on the display interface of the remote terminal; The remote terminal also provides a historical data query function, which can display the trend of wire diameter change at the same measurement point in the form of charts.

7. The non-contact wire diameter measurement method for overhead power distribution lines as described in claim 6, characterized in that: The method further includes, The calculated wire diameter value is compared with a preset threshold range; If the wire diameter value exceeds the threshold range, an alarm is triggered on the display interface to alert the operator that the measurement result is abnormal.

8. A non-contact wire diameter measurement system for overhead power distribution lines, using the method described in any one of claims 1-7, characterized in that, include: The positioning module is used to operate the laser ranging head through an insulated operating rod, and to perform non-contact positioning of the energized overhead line to be tested using the insulated positioning structure on the laser ranging head. The acquisition and transmission module is used to activate the laser ranging head, so that it emits laser light towards the surface of the overhead line and receives the reflected light, obtains the original measurement signal based on the triangulation principle, and transmits the measurement data containing the original measurement signal through wireless communication. The receiving and calculation module is used to receive the measurement data from the remote terminal, decode the original measurement signal, and calculate the wire diameter value of the overhead line based on the preset measurement model. The output module is used to output the wire diameter value based on the remote terminal.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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