Network configuration construction dynamic operation management system based on multifunction positioning module

Abstract

This invention discloses a dynamic operation management system for power distribution network construction based on a multi-functional positioning module, belonging to the field of positioning and sensing technology. The invention first constructs a set of nonlinear pseudorange observation equations, then analyzes and obtains a virtual pseudorange (PIF) without ionospheric delay, thereby eliminating positioning errors of terminal equipment. It also analyzes whether the terminal equipment is in an absolutely stationary state, thus executing communication timing logic under absolutely stationary conditions. Simultaneously, it performs closed-loop control of charging and discharging of the terminal equipment, determines boundary crossings for personnel carrying the terminal equipment, and enables communication collaboration among personnel within the same work area. Finally, it encrypts the data transmitted by the terminal equipment. This invention achieves precise positioning of personnel, solves the problem of insufficient power supply to terminal equipment during field power distribution network construction, reduces safety risks in field power distribution network construction, and provides reliable protection for the personal safety of personnel.

Description

Technical Field

[0001] This invention relates to the field of positioning and sensing technology, and more specifically to a dynamic operation management system for power distribution network construction based on a multi-functional positioning module. Background Technology

[0002] Currently, the positioning and sensing capabilities at construction, maintenance, and emergency repair sites are primarily limited by the hardware architecture and algorithm logic of first-generation digital tools. Once entering typical power operating conditions, the strong electromagnetic environment beneath ultra-high-voltage transmission lines, or transmission corridors through mountainous terrain, signal stability drops drastically. Single-frequency signals cannot effectively resist ionospheric delay and multipath reflection interference, resulting in significant nonlinear shifts in coordinate data during real-time uploads. The horizontal error envelope often fluctuates wildly within the range of 15 to 30 meters. Therefore, developing a dynamic operation management system for power distribution network construction based on a multi-functional positioning module is crucial.

[0003] Existing technologies for dynamic operation management of power distribution network construction based on multi-functional positioning modules still have some shortcomings, specifically in the following aspects: 1. The existing perception system at the production site has a serious lack of systematic data security protection and encrypted link construction. Currently, most positioning terminals used at the grassroots level lack industry-level hardware security hardening, and their internal architecture lacks SC chips, resulting in location coordinate streams, operation instructions, and on-site multimedia data being in a quasi-plaintext state during public network transmission. With the continuous improvement of the security level of power grid geospatial information (GIS), the coupled data of real-time coordinates of operators and power grid topology has become a highly threatening strategic intelligence. Existing terminals generally lack VPN dedicated tunnel access capabilities at the transmission layer and fail to achieve two-way identity authentication at the physical and logical layers. This makes the data face huge security risks of being intercepted, forged, or maliciously tampered with when passing through 4G / 5G public network base stations.

[0004] 2. Current positioning terminals can only transmit single coordinates and lack edge computing processing logic for multi-dimensional sensor data such as acceleration and tilt angle. Therefore, they cannot autonomously determine whether a person is in a specific operational state, such as normal walking, climbing at heights, having fallen, or being in a dormant state. This "discontinuity in state determination logic" directly prevents the platform from achieving automated risk classification and early warning triggering. Summary of the Invention

[0005] To address the aforementioned technical shortcomings, the present invention aims to provide a dynamic operation management system for power distribution network construction based on a multi-functional positioning module.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a dynamic operation management system for power distribution network construction based on a multi-functional positioning module, including: a positioning module, used to construct a set of nonlinear pseudorange observation equations, and then analyze and obtain a virtual pseudorange PIF without ionospheric delay, thereby eliminating the positioning error of the terminal equipment.

[0007] The adaptive sleep module is used to analyze and obtain the magnitude variance of the acceleration vector of the terminal device within a preset time window, and then determine whether the terminal device is in an absolutely stationary state, thereby executing the communication timing logic in the absolutely stationary state.

[0008] The power supply management module is used for closed-loop control of charging and discharging of terminal equipment.

[0009] The communication and collaboration module is used to determine whether operators carrying terminal devices have crossed boundaries, and to enable communication and collaboration among operators within the same work area.

[0010] The communication encryption module is used to encrypt the data transmitted by the terminal device.

[0011] The beneficial effects of this invention are as follows: 1. The positioning module of this invention, by constructing a set of nonlinear pseudorange observation equations and solving the ionospherically delayed virtual pseudorange (PIF), combined with extended Kalman filtering or least squares method, converges the three-dimensional coordinate accuracy of the terminal equipment to within 1.5 meters in plane and 2.0 meters in elevation, solving the pain point of large positioning errors in power distribution network construction; at the same time, the communication and collaboration module accurately determines the boundary crossing situation of the workers through the ray method, triggers the violation alarm and pushes it to the supervisor's end, effectively preventing the workers from accidentally entering the prohibited area, reducing the safety risks of field power distribution network construction, and providing reliable protection for the personal safety of the workers.

[0012] 2. This invention achieves low power consumption and long battery life, adapting to complex field operation scenarios. The adaptive sleep module determines the stationary state of the terminal device by analyzing the magnitude variance of the acceleration vector, executes sleep timing logic, cuts off power supply to unnecessary devices, and only retains the MCU for low-power operation. Combined with the RTC timer interrupt wake-up mechanism, it avoids unnecessary energy consumption. The power management module achieves efficient energy output from the solar panel through adaptive impedance matching, completely solving the problems of insufficient power supply to terminal devices and frequent battery replacements in field power grid construction, ensuring long-term stable operation of the system.

[0013] 3. The communication collaboration module of this invention is based on the WebSocket full-duplex communication architecture, realizing dynamic collaboration of personnel in the same work area by "people entering the group and leaving the group when people leave," breaking the traditional communication delay barrier; the communication encryption module adopts the national cryptographic SM4 symmetric encryption + SM3 message digest combined with VPN tunnel dual protection, and with hardware-level encryption chip, ensures the confidentiality and integrity of construction data transmission; at the same time, the "dynamic operation one map" software realizes unified spatiotemporal monitoring of personnel, equipment and tasks, simplifies management process, and improves the intelligence and efficiency of dynamic control of power distribution network construction. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 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 schematic diagram of the system structure connection of the present invention.

[0016] Figure 2 This is a schematic diagram of the hardware design of the positioning module of the present invention.

[0017] Figure 3 This is a software architecture diagram of the "Dynamic Job Management in One Diagram" of this invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Reference Figure 1 As shown, the present invention provides a dynamic operation management system for power distribution network construction based on a multi-functional positioning module, including: a positioning module, used to construct a set of nonlinear pseudorange observation equations, and then analyze and obtain a virtual pseudorange PIF without ionospheric delay, thereby eliminating the positioning error of the terminal equipment.

[0020] It should be noted that the terminal device is an integrated device equipped with a positioning module, as shown in the reference. Figure 2 As shown, the positioning module consists of an MCU, a PMU, a battery, a solar panel, an encryption chip, LEDs, and a board.

[0021] In a specific example, the construction of the nonlinear pseudorange observation equation set is as follows: Suppose the terminal device receives pseudorange observation values ​​P1 and P2 from the same satellite in two different frequency bands, then the nonlinear pseudorange observation equation set is constructed as follows: ,in Let be the geometric distance from the terminal device to the satellite, c be the speed of light, dtr and dts be the clock bias of the terminal device and the satellite, respectively, T be the tropospheric delay, and K be the ionospheric composite constant. and These are the frequencies of two different frequency bands of the satellite. and M1 and M2 are the first-order ionospheric delay terms for the two different frequency bands of the satellite, respectively. M1 and M2 are the multipath errors for the two different frequency bands of the satellite, respectively. e1 and e2 are the observation noise of the terminal equipment corresponding to the two different frequency bands of the satellite.

[0022] It should be noted that the above-mentioned satellites refer to BeiDou satellites or QZSS satellites, etc.

[0023] It should also be noted that the multipath error of the satellite in two different frequency bands was obtained by observing the static observation residual statistical method, and the observation noise of the terminal equipment in each frequency band was obtained by querying the factory parameters of the terminal equipment receiver.

[0024] In a specific example, the analysis yields a virtual pseudorange PIF without ionospheric delay. The specific process is as follows: the nonlinear pseudorange observation equations are linearly combined to obtain the virtual pseudorange PIF: Where MIF and eIF represent the ionospheric-free combined multipath error and the ionospheric-free combined observation noise, respectively. , .

[0025] It should be noted that after the above transformation, the first-order ionospheric delay, which accounts for the largest proportion of the error, is completely mathematically canceled. Subsequently, the terminal device can stably converge the accuracy of the three-dimensional coordinates to within 1.5 meters in the plane and 2.0 meters in the elevation by using extended Kalman filtering or least squares method, providing a solid high-precision spatial reference for subsequent applications.

[0026] The adaptive sleep module is used to analyze and obtain the magnitude variance of the acceleration vector of the terminal device within a preset time window, and then determine whether the terminal device is in an absolutely stationary state, thereby executing the communication timing logic in the absolutely stationary state.

[0027] In a specific example, the analysis obtains the variance of the magnitude of the acceleration vector within a preset time window. The specific process is as follows: The triaxial accelerometer built into the terminal device collects the acceleration vectors of the three spatial axes at a preset sampling rate, and then records the triaxial accelerations collected by the triaxial accelerometer at sampling point t as follows: , and Therefore, the magnitude of the acceleration vector at sampling point t can be calculated as follows: Then, the motion feature recognition algorithm based on variance analysis is run through the MCU inside the terminal device to calculate the variance of the acceleration vector magnitude within the preset time window: Where t is the sampling point number within the preset time window, t is a positive integer, and N is the total number of sampling points within the preset time window. This represents the average acceleration vector magnitude of the triaxial accelerometer at each sampling point within a preset time window.

[0028] In a specific example, the process of determining whether the terminal device is in an absolutely static state is as follows: [The process involves] selecting a time period within a preset time frame... Compare with the set minimum static detection threshold; if within a preset time period... If the device remains below the set minimum static detection threshold, the MCU determines that the terminal device is in an absolutely static state; otherwise, the MCU determines that the terminal device is in a non-absolutely static state.

[0029] It should be noted that the time period threshold is set by the relevant staff, and can be 10 minutes or one hour, etc.; the minimum static judgment threshold is determined by the static noise calibration of the triaxial accelerometer: first, the terminal device is completely stationary, the raw triaxial acceleration data is collected and the acceleration variance in the static state is statistically analyzed to obtain the inherent noise variance of the triaxial accelerometer itself, and the average value of multiple collections is recorded as the minimum static judgment threshold.

[0030] In a specific instance, the communication timing logic in the absolute stationary state is executed as follows: Position locking: Extract the last GGA and RMC messages output by the GNSS chip before the absolute stationary state, and map them from the WGS-84 coordinate system to the CGCS2000 coordinate system.

[0031] Status words and packets: In the fixed byte bits of the communication protocol frame sent by the terminal device to the cloud platform through the 4G module, the absolute static flag Sleep_Flag=0x01 of the terminal device is written. After receiving the absolute static flag, the cloud platform marks the life cycle status of the terminal device as sleep in the Redis memory. At this time, the front-end GIS interface of the default software does not display the offline icon, but locks the terminal device icon at the coordinate point of the last upload and attaches the sleep flag.

[0032] It should be noted that the communication protocol frame also includes a frame header, terminal device ID, status word, GNSS coordinates, battery voltage, charging status, and checksum.

[0033] It should be noted that when the terminal device is not in an absolutely static state, the fixed byte bit of the communication protocol frame is Sleep_Flag=0x00.

[0034] It should also be noted that the default software is "Dynamic Job Management One-Map" software.

[0035] Reference Figure 3 As shown, the "Dynamic Job Management One-Map" software of this invention is divided into three main functional modules: a homepage module, a message module, and a management module. The software is a mobile app, and its architecture consists of a data persistence layer, a component layer, an SDK layer, a business layer, and an application layer. The data persistence layer specifically distinguishes between spatial databases and attribute databases, supporting the storage and querying of map and vector data. The component layer retains common components, emphasizing image processing, file operations, map controls, and a message bus. The SDK layer explicitly integrates the GIS SDK, implementing the core SDK for map rendering, spatial analysis, map plotting, and spatial point attribute viewing. The business layer encapsulates business service interfaces based on the business application requirements of this invention. The application layer is divided into three main functional modules based on actual business needs: a homepage module, a message module, and a management module.

[0036] The homepage module serves as the core visual interface of the system, centered around a map display and integrating basic tools such as map zooming, measurement, and plotting. It includes layer management and a search bar for quick location of equipment and its corresponding layer. A list of work groups can be accessed, displaying the geographical locations of group members and the group chat window. Around the map, the current work group list and the dynamic location icons of connected devices are displayed in real time, enabling unified monitoring and command and dispatch of tasks, personnel, and equipment across time and space.

[0037] The messaging module serves as the system's collaborative communication and task management center. Users can quickly locate information through searches and have complete capabilities to create new task groups, manage group members, and configure group settings. The core of this module is the task group chat function, which supports task-related instant messaging, file sharing, and location sharing, ensuring a closed loop between task instruction issuance and process communication.

[0038] The management module serves as the system's personal and resource configuration center. It is primarily responsible for binding, monitoring, and managing the status of user-owned devices (device management), as well as maintaining the address books within individuals and organizations to facilitate quick contact with relevant personnel and provide basic support for efficient cross-team collaboration.

[0039] This invention aims to build a dynamic operation management platform that integrates geographic information systems (GIS) and real-time communication, enabling on-site visualization, instant collaboration, and resource management. This facilitates quick contact with relevant personnel and location of relevant monitoring equipment, providing fundamental support for efficient cross-team collaboration.

[0040] Low-power polling and interrupt wake-up: After determining that the terminal device is in an absolutely stationary state, the terminal device's built-in RTC timer wakes up the triaxial accelerometer every 10 seconds to perform a modulus difference calculation. ,like If the difference exceeds the preset modulus difference threshold Thwake, the INT pin of the triaxial accelerometer chip will output a high level to trigger an external interrupt of the MCU, thereby waking up the terminal device.

[0041] It should be noted that after the terminal device sends the communication protocol frame, the MCU cuts off the power supply to the GNSS receiver, 4G baseband chip and various peripherals, and only the MCU remains in stop mode on the entire board.

[0042] It should be noted that the modulus difference threshold Thwake = 0.05.

[0043] The power supply management module is used for closed-loop control of charging and discharging of terminal equipment.

[0044] In a specific example, the closed-loop control of charging and discharging of the terminal device is performed as follows: The MCU in the terminal device collects the output voltage U(K) and current I(K) of the solar panel at each sampling point with a fixed sampling frequency, and then calculates the output power P(K) at each sampling point. .

[0045] It should be noted that the sampling frequency is obtained by dividing the MCU clock. The sampling interval is configured in the firmware, and the sampling frequency is the reciprocal of the sampling interval.

[0046] If the output power of a certain sampling point is greater than the output power of the previous sampling point, the solar panel maintains its original adjustment direction and decreases its equivalent input impedance by a fixed step size; if the output power of a certain sampling point is less than or equal to the output power of the previous sampling point, the solar panel increases its input impedance in the opposite direction by a fixed step size.

[0047] It should be noted that the fixed step size is 1%.

[0048] It should be noted that this invention uses continuous microscopic "perturbation-observation-adjustment" to dynamically change the equivalent input impedance of the chip, so that the solar panel is always locked at the top of the PV curve to output energy. This physical-level adaptive impedance matching mechanism is the core technology that enables efficient power supply as long as there is light.

[0049] The communication and collaboration module is used to determine whether operators carrying terminal devices have crossed boundaries, and to enable communication and collaboration among operators within the same work area.

[0050] In a specific instance, the process of determining whether an operator carrying a terminal device has crossed the boundary is as follows: First, obtain the coordinates of each boundary point of any prohibited area from the GIS, and then connect the coordinates of each boundary point of the prohibited area in sequence to obtain the closed polygon corresponding to the prohibited area.

[0051] Simultaneously, using the latitude and longitude coordinates uploaded in real time by the terminal device as the origin, a ray is emitted in any direction. The intersection points of this ray with the closed polygon corresponding to the prohibited area are then counted. If the number of intersection points is odd, it is determined that the worker carrying the terminal device has violated the boundary of the prohibited area; otherwise, it is determined that the worker carrying the terminal device has not violated the boundary of the prohibited area. Based on the above method, the boundary violation status of each worker in each prohibited area can be determined.

[0052] It should be noted that when a worker is found to have violated regulations by crossing into a prohibited area, a powerful alarm event will be triggered, and the alarm will be simultaneously pushed to the preset software interface of the on-site supervisor.

[0053] In a specific example, the communication and collaboration among workers based on the same work area is achieved as follows: by constructing closed polygons corresponding to each prohibited area, closed polygons corresponding to each work area are constructed, and then, by determining whether workers carrying terminal devices have violated the rules and crossed the boundaries, it is determined whether each worker is within their respective work area.

[0054] For workers within the same work area, based on the WebSocket full-duplex communication architecture, each worker's session identifier is mapped and bound to the same group chat room number, so that all workers are in the same group chat room. Relevant information in the group chat room will be pushed to the group chat interface of each worker's preset software. When it is determined that a worker is not in the work area or the terminal device is in an absolutely static state, the member's WebSocket connection is automatically downgraded or unbound, and the worker leaves the group chat room.

[0055] It should be noted that the relevant information in the group chat room includes text commands, voice broadcasts, and one-click location check-in data.

[0056] This invention utilizes the WebSocket full-duplex communication architecture. Unlike traditional HTTP short-connection polling, WebSocket can establish a persistent, low-latency communication tunnel between the server and the positioning terminal. This allows text commands, voice announcements, and "one-click location check-in" data within the group to be proactively pushed to the interfaces of all operators at millisecond speeds. When an operator leaves the work area, or when the terminal reports the aforementioned "dormant status word," the backend group chat microservice automatically downgrades or unbinds the member's WebSocket connection, thereby stopping the push of irrelevant multimedia information within the group. This dynamic topology principle of "group creation upon arrival, group departure upon departure" not only significantly reduces the operational and mental burden on on-site personnel but also maximizes the conservation of scarce 4G traffic and system computing overhead in the field.

[0057] The communication encryption module is used to encrypt the data transmitted by the terminal device.

[0058] In a specific example, the encryption process for data transmitted by the terminal device is as follows: When the MCU of the terminal device transmits data, the data stream is first sent to the encryption chip built into the terminal device via SPI or I2C bus. The encryption chip uses the internally fixed and unreadable root key and the national cryptographic SM4 symmetric encryption algorithm to perform block cipher round encryption on the payload. At the same time, the SM3 cryptographic hash algorithm is used to generate irreversible message digests for each instruction.

[0059] It should be noted that the SM3 cryptographic hash algorithm is used to generate irreversible message digests for each instruction, including remote sleep instructions and frequency modification instructions.

[0060] It should be noted that the aforementioned dual protection mechanism of hardware-level encryption and decryption combined with VPN tunnels ensures the absolute confidentiality and integrity of the "one map" data at the infrastructure site from both the perspectives of physical isolation and algorithmic mathematical difficulty.

[0061] It should also be noted that when platform administrators input text commands to be sent to the site (such as "Please note, you have entered a dangerous electrified area") into the preset software interface, the cloud-based TTS microservice instantly renders these texts into an extremely low bitrate audio stream file (such as AMR or Speex format, with 1 second of voice occupying only about 1-2KB). After the terminal device's built-in 4G communication module receives this audio data stream, it is directly handed over to a small independent audio digital-to-analog converter chip and a miniature audio power amplifier circuit for hardware-level decoding, driving the waterproof speaker to produce sound. Through this acoustic physics and network collaborative design of "complex rendering in the cloud and minimalist sound output at the edge," not only is the dynamic text delivery and broadcasting perfectly realized, but it also does not increase the physical size and power consumption burden of the terminal device at all.

[0062] The examples described in this invention are not limited to the specific embodiments listed above. The examples are merely illustrative to facilitate understanding of the invention and do not constitute a limitation on the scope of protection of this invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of this invention should be included within the scope of protection.

[0063] The above description is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they should all fall within the protection scope of the present invention.

Claims

1. A network construction dynamic operation management system based on a multifunction positioning module, characterized in that, Includes the following modules: The positioning module is used to construct a set of nonlinear pseudorange observation equations, and then analyze and obtain the virtual pseudorange PIF without ionospheric delay, thereby eliminating the positioning error of the terminal equipment. The adaptive sleep module is used to analyze and obtain the magnitude variance of the acceleration vector of the terminal device within a preset time window, and then determine whether the terminal device is in an absolutely stationary state, thereby executing the communication timing logic in the absolutely stationary state; The power supply management module is used for closed-loop control of charging and discharging of terminal equipment; The communication and collaboration module is used to determine whether operators carrying terminal devices have crossed boundaries, and to enable communication and collaboration among operators within the same work area. The communication encryption module is used to encrypt the data transmitted by the terminal device.

2. The power distribution network construction dynamic operation management system based on a multi-functional positioning module according to claim 1, characterized in that, The specific process for constructing the nonlinear pseudorange observation equation set is as follows: Suppose that the terminal device receives pseudorange observations from the same satellite in two different frequency bands, namely P1 and P2, then the nonlinear pseudorange observation equations are constructed as follows: ,in Let be the geometric distance from the terminal device to the satellite, c be the speed of light, dtr and dts be the clock bias of the terminal device and the satellite, respectively, T be the tropospheric delay, and K be the ionospheric composite constant. and These are the frequencies of two different frequency bands of the satellite. and M1 and M2 are the first-order ionospheric delay terms for the two different frequency bands of the satellite, respectively. M1 and M2 are the multipath errors for the two different frequency bands of the satellite, respectively. e1 and e2 are the observation noise of the terminal equipment corresponding to the two different frequency bands of the satellite.

3. The power distribution network construction dynamic operation management system based on a multi-functional positioning module according to claim 2, characterized in that, The analysis yields a virtual pseudorange PIF without ionospheric delay, and the specific process is as follows: By linearly combining the nonlinear pseudorange observation equations, the virtual pseudorange PIF is obtained: Where MIF and eIF represent the ionospheric-free combined multipath error and the ionospheric-free combined observation noise, respectively. , .

4. The power distribution network construction dynamic operation management system based on a multi-functional positioning module according to claim 3, characterized in that, The analysis yields the variance of the magnitude of the acceleration vector within a preset time window. The specific process is as follows: The terminal device's built-in triaxial accelerometer collects acceleration vectors along the three axes of space at a preset sampling rate, and then records the triaxial accelerations collected by the triaxial accelerometer at sampling point t as follows: , and Therefore, the magnitude of the acceleration vector at sampling point t can be calculated as follows: Then, the motion feature recognition algorithm based on variance analysis is run through the MCU inside the terminal device to calculate the variance of the acceleration vector magnitude within the preset time window: Where t is the sampling point number within the preset time window, t is a positive integer, and N is the total number of sampling points within the preset time window. This represents the average acceleration vector magnitude of the triaxial accelerometer at each sampling point within a preset time window.

5. The power distribution network construction dynamic operation management system based on a multi-functional positioning module according to claim 4, characterized in that, The specific process for determining whether the terminal device is in an absolutely stationary state is as follows: Within the preset time period Compare with the set minimum static detection threshold; if within a preset time period... If the device remains below the set minimum static detection threshold, the MCU determines that the terminal device is in an absolutely static state; otherwise, the MCU determines that the terminal device is in a non-absolutely static state.

6. The power distribution network construction dynamic operation management system based on a multi-functional positioning module according to claim 5, characterized in that, The specific process of executing the communication timing logic in an absolutely static state is as follows: Position locking: Before extracting the last GGA and RMC messages output by the GNSS chip in the absolute stationary state, map them from the WGS-84 coordinate system to the CGCS2000 coordinate system; Status words and packets: In the fixed byte bits of the communication protocol frame sent by the terminal device to the cloud platform through the 4G module, the absolute static flag Sleep_Flag=0x01 of the terminal device is written. After the cloud platform receives the absolute static flag, it marks the life cycle status of the terminal device as sleep in the Redis memory. At this time, the front-end GIS interface of the default software does not display the offline icon, but locks the terminal device icon at the coordinate point of the last upload and attaches the sleep flag. Low-power polling and interrupt wake-up: After determining that the terminal device is in an absolutely stationary state, the terminal device's built-in RTC timer wakes up the triaxial accelerometer every 10 seconds to perform a modulus difference calculation. ,like If the difference exceeds the preset modulus difference threshold Thwake, the INT pin of the triaxial accelerometer chip will output a high level to trigger an external interrupt of the MCU, thereby waking up the terminal device.

7. The power distribution network construction dynamic operation management system based on a multi-functional positioning module according to claim 6, characterized in that, The specific process of performing closed-loop control of charging and discharging of the terminal device is as follows: In the terminal device, the MCU collects the output voltage U(K) and current I(K) of the solar panel at each sampling point with a fixed sampling frequency, and then calculates the output power P(K) at each sampling point. ; If the output power of a certain sampling point is greater than the output power of the previous sampling point, the solar panel maintains its original adjustment direction and decreases its equivalent input impedance by a fixed step size; if the output power of a certain sampling point is less than or equal to the output power of the previous sampling point, the solar panel increases its input impedance in the opposite direction by a fixed step size.

8. The power distribution network construction dynamic operation management system based on a multi-functional positioning module according to claim 7, characterized in that, The specific process for determining whether personnel carrying terminal equipment have crossed boundaries is as follows: First, obtain the coordinates of each boundary point of any prohibited area from the GIS, and then connect the coordinates of each boundary point of the prohibited area in sequence to obtain the closed polygon corresponding to the prohibited area. Simultaneously, using the latitude and longitude coordinates uploaded in real time by the terminal device as the origin, a ray is emitted in any direction. The intersection points of this ray with the closed polygon corresponding to the prohibited area are then counted. If the number of intersection points is odd, it is determined that the worker carrying the terminal device has violated the boundary of the prohibited area; otherwise, it is determined that the worker carrying the terminal device has not violated the boundary of the prohibited area. Based on the above method, the boundary violation status of each worker in each prohibited area can be determined.

9. The power distribution network construction dynamic operation management system based on a multi-functional positioning module according to claim 8, characterized in that, The specific process for achieving communication and collaboration among workers based on the same work area is as follows: By constructing closed polygons corresponding to each prohibited area, closed polygons corresponding to each work area are constructed. Then, by determining whether the workers carrying terminal devices have violated the rules and crossed the boundaries, it is determined whether each worker is within each work area. For all workers in the same work area, based on the WebSocket full-duplex communication architecture, the session identifier of each worker is mapped and bound to the same group chat room number, so that all workers are in the same group chat room. The relevant information in the group chat room will be pushed to the group chat interface of each worker's preset software. When it is determined that a worker is not in the work area or the terminal device is in an absolutely static state, the WebSocket connection of that member is automatically downgraded or unbound, and the worker leaves the group chat room.

10. The power distribution network construction dynamic operation management system based on a multi-functional positioning module according to claim 8, characterized in that, The specific process for encrypting the data transmitted by the terminal device is as follows: When the MCU of the terminal device transmits data, the data stream is first sent to the encryption chip built into the terminal device via SPI or I2C bus. The encryption chip uses the SM4 symmetric encryption algorithm, which is embedded in the internal root key and cannot be read, to encrypt the payload in a block cipher round. At the same time, the SM3 cryptographic hash algorithm is used to generate irreversible message digests for each instruction.

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