Low-power-consumption electric power tower inclination monitoring device

Abstract

The utility model relates to the technical field of power transmission line on-line monitoring, and discloses a low-power-consumption electric power tower inclination monitoring device which comprises a monitoring device which is arranged on a line tower through a connecting assembly. The monitoring device comprises a monitoring shell, a single-chip microcomputer, a six-axis attitude sensor module, a temperature and humidity sensor, a communication module and a power supply, the single-chip microcomputer, the six-axis attitude sensor module, the temperature and humidity sensor, the communication module and the power supply are arranged in the monitoring shell, and the single-chip microcomputer is in signal connection with the six-axis attitude sensor module, the temperature and humidity sensor and the communication module. The connecting assembly comprises a fixed connecting plate and a hook part, the hook part comprises a hook part and a threaded rod part integrally arranged with the hook part, a bolt part is in threaded fit with the threaded rod part, a U-shaped bayonet is formed in the fixed connecting plate, a kidney-shaped hole groove is formed in the fixed connecting plate, and the U-shaped bayonet is matched with the kidney-shaped hole groove. And the threaded rod part extends out of the waist-shaped hole groove to realize locking.

Description

Technical Field

[0001] This utility model relates to the field of online monitoring of power transmission lines, and in particular to a low-power power pole tilt monitoring device. Background Technology

[0002] Power poles are vital infrastructure for power supply, and their safety is paramount. However, power poles are generally located outdoors over a wide area, with many situated in remote regions. This makes them vulnerable to natural disasters and human-caused damage, which is often difficult to detect in a timely manner. This can easily lead to serious accidents such as pole tilting, breakage, or even complete collapse. Many factors contribute to pole tilting, including ground slippage, settlement deformation, and weather-related factors such as strong winds, floods, and icing that cause soil erosion or foundation instability at the pole's location. Human-caused damage, such as excavation of the tower foundation or theft of tower materials, also plays a role. Traditional daily inspections relying on manual patrols suffer from high labor costs, long inspection cycles, and difficulty in guaranteeing inspection quality, making it challenging to detect tilting faults in a timely and accurate manner.

[0003] Existing pole tilt monitoring devices often only have one, two, or three-axis accelerometers. These sensors measure spatial acceleration by decomposing it along the X, Y, and Z axes. While they offer static stability, they lack dynamic stability. When the pole experiences minor vibrations or displacements due to external factors, the resulting acceleration can affect measurement accuracy, leading to larger errors and false alarms. Power poles are subject to slight vibrations from wind, snow, and other external forces, making them unsuitable for tilt angle measurement. Furthermore, the precision and accuracy of pole tilt monitoring depend not only on the sensor itself but also on the workmanship and installation process of the connectors between the sensor and the pole. Existing pole tilt monitoring devices suffer from large size, potential for misaligned installation, or loosening of connections due to external forces, resulting in severely distorted monitoring data and affecting the final monitoring results. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a low-power power pole tilt monitoring device that monitors the tilt of transmission poles in real time, provides timely early warning of faulty poles, and can quickly and effectively remind operation and maintenance personnel to conduct manual inspections of transmission poles to locate faults, thereby improving the safety of overhead transmission line operation.

[0005] The technical solution of this utility model is as follows: a low-power power pole tilt monitoring device, comprising a monitoring device mounted on the power pole via a connecting assembly. The monitoring device includes a monitoring housing, a microcontroller, a six-axis attitude sensor module, a temperature and humidity sensor, a communication module, and a power supply, all housed within the monitoring housing. The microcontroller is electrically connected to both the six-axis attitude sensor module and the temperature and humidity sensor. The microcontroller is also connected to a remote master station via the communication module. The connecting assembly includes a fixed connecting plate and a hook component. The hook component includes a hook portion and a threaded rod portion integrally formed with the hook portion. A bolt is threaded onto the threaded rod portion. The fixed connecting plate has a U-shaped bayonet and a waist-shaped slot. The threaded rod portion extends out of the waist-shaped slot and is locked in place by the bolt.

[0006] As can be seen from the above scheme, the microcontroller is used to process input data, perform calculations, and communicate. The six-axis attitude sensor module is used to sense the acceleration and angular velocity of the power pole, and obtain the pole tilt angle data through calculation. The temperature and humidity sensor is used to monitor the temperature and humidity data at the pole installation site, providing auxiliary data support for pole tilt analysis. The communication module, temperature and humidity sensor, and six-axis attitude sensor module are respectively connected to the microcontroller for transmitting data to the microcontroller for data processing, calculation, and communication. This invention uses a high-precision six-axis attitude sensor, and combines a three-axis accelerometer sensor with static stability tilt monitoring and a three-axis gyroscope sensor with dynamic stability tilt monitoring to measure the pole tilt angle, and performs mutual correction to obtain higher accuracy and reliability pole tilt data. This utility model also uses highly reliable connection components for installation, achieving small size, reliable installation, and low cost.

[0007] The monitoring housing includes a first housing and a second housing fastened to the bottom of the first housing. The first housing has a waterproof groove containing a sealing ring. Screw holes are located at the four top corners of the first housing, and nuts 13 are inserted into these holes. The second housing has several vent holes corresponding to the temperature and humidity sensors. The bottom of the second housing is arc-shaped. Therefore, the vent holes are used by the temperature and humidity sensor probe to sense the ambient temperature and humidity data.

[0008] The communication module includes a communication encryption module. Therefore, the communication encryption unit is used to encrypt communication between the monitoring device and the remote master station.

[0009] The microcontroller is equipped with an independent watchdog module. Therefore, the watchdog module is used to automatically restore device operation when a self-test anomaly occurs.

[0010] The microcontroller is connected to the six-axis attitude sensor module via an SPI interface and to the temperature and humidity sensor via an IIC interface.

[0011] The six-axis attitude sensor module includes a three-axis accelerometer and a three-axis gyroscope. Therefore, the three-axis accelerometer is used to measure the gravitational acceleration in the X, Y, and Z directions under static conditions on the power pole, while the three-axis gyroscope is used to measure the angular velocities in the X, Y, and Z axes under dynamic conditions.

[0012] The monitoring housing is also equipped with a Bluetooth module, which is connected to a mobile terminal. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the monitoring device.

[0014] Figure 2 This is a schematic diagram of the structure of this utility model;

[0015] Figure 3 This is a control diagram of the present invention;

[0016] Figure 4 This is a schematic diagram of the six-axis attitude sensor module;

[0017] Figure 5 This is a control diagram for remote master station monitoring. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] like Figures 1 to 5As shown, this utility model is a low-power power pole tilt monitoring device, including a monitoring device that is mounted on the power pole via a connecting assembly. The monitoring device includes a monitoring housing 1, a microcontroller 2, a six-axis attitude sensor module 3, a temperature and humidity sensor 4, a communication module 5, and a power supply, all housed within the monitoring housing 1. The microcontroller 2 is electrically connected to the six-axis attitude sensor module 3 and the temperature and humidity sensor 4, respectively. The microcontroller is also connected to a remote master station 10 via the communication module 5. The connecting assembly includes a fixed connecting plate 7 and a hook 8. The hook 8 includes a hook portion 81 and a threaded rod portion 82 integrally formed with the hook portion 81. A bolt is threaded onto the threaded rod portion 82. The fixed connecting plate 7 has a U-shaped bayonet 71 and a waist-shaped slot 72. The threaded rod portion 82 extends out of the waist-shaped slot 72 and is locked in place by the bolt 9.

[0020] In this embodiment, the temperature and humidity sensor 4 is a temperature and humidity sensor, the communication module 5 is a 4G module with an antenna, the power supply uses a lithium-ion battery pack as the power source, and a level conversion chip provides corresponding power signals to each module. The microcontroller is a low-power microcontroller, specifically the STM32L31VCT microcontroller from STMicroelectronics. This chip is an ultra-low-power microcontroller with a floating-point unit, adopts an ultra-low-power core architecture, and is configured with low-power peripherals. The minimum standby current in ultra-low-power mode is only 8nA. The microcontroller manages the module power supply of each module by controlling the metal-oxide-semiconductor field-effect transistor (MOSFET) through the I / O pins, ensuring that the power is turned on only when a module is actually used and turned off when not in use, thus achieving low-power control of the device.

[0021] The monitoring housing 1 includes a first housing 11 and a second housing 12 fastened to the bottom of the first housing 11. The first housing 11 has a waterproof groove 111, within which a sealing ring 112 is installed. Fixing screw holes are located at the four top corners of the first housing 11, and nuts 13 are inserted into these holes. The second housing 12 has several vent holes 121, corresponding to the temperature and humidity sensor 4. The bottom of the second housing 12 is arc-shaped. In this embodiment, a spring washer 131 is provided on the nut 13.

[0022] In this embodiment, the first housing 11 is made of 304 stainless steel and has a waterproof groove 111. A sealing ring 112 is installed inside the waterproof groove 111. The first housing 11 and the second housing 12 are fixed together using Phillips head screws. The internal space is used to install the monitoring circuit board, temperature and humidity sensor, communication module, and other components. There are four fixing screw holes at the four corners of the top of the first housing 11. Nuts 13 are inserted into the fixing screw holes, and the monitoring housing 1 is fixed together with the fixing connecting plate 7 using four Phillips head screws. The second housing 12 is made of ABS plastic, allowing the antenna signal of the communication module 5 installed inside the monitoring housing 1 to pass through the monitoring housing 1 and communicate with the remote master station 10. Because the second housing 12 is "inverted", rainwater will not enter the device through the vent 121.

[0023] The monitoring housing 1 also houses a Bluetooth module connected to a mobile terminal 20. The communication module 5 includes a communication encryption module, and the microcontroller 2 contains a status assessment unit, a timing unit, and a data storage unit 23. In this embodiment, the Bluetooth module is used by maintenance personnel to directly maintain the device from below the tower. Based on the characteristics of maintenance work, the Bluetooth module operates as a low-power monitoring module during the day, allowing maintenance personnel to conduct maintenance on the monitoring device from below the tower via Bluetooth. To reduce power consumption, the device shuts off the Bluetooth module at night. The device collects tower tilt status data and assesses its status at intervals T1 (e.g., 30 minutes) set by the timing unit. If the microcontroller 2 detects an abnormal tilt, it immediately sends the monitoring data to the remote master station 10. If the tilt is normal, the device temporarily stores the monitoring data in the data storage unit 23. When the time interval reaches the set time T2 (e.g., 24 hours), the microcontroller 2 compresses and packages the temporarily stored data and sends it to the remote master station 10 all at once. This processing method does not require the communication module to communicate with the remote master station every time data is collected. Instead, it centrally processes multiple collected data sets before sending them to the remote master station, significantly reducing the operating frequency of the 4G module. Since the 4G module consumes a lot of power during communication, this method allows the 4G module to be powered off for extended periods without power consumption. The 4G module is only activated during a limited number of operations, significantly reducing the device's average power consumption. The Bluetooth module uses a BLE 5.0 low-power Bluetooth module, the communication module uses a power-optimized CAT.1 type 4G module, and the communication encryption module uses a distribution network encryption chip commonly used by power grid companies, enabling encrypted communication with the power grid company's remote master station.

[0024] The microcontroller 2 is equipped with a watchdog module, and the monitoring housing 1 is also equipped with a Bluetooth module, which is connected to the mobile terminal 20. In this embodiment, the watchdog module is a timer circuit. When no "feed" signal is detected from the microcontroller 2 within a set time interval, the watchdog module pulls the hardware reset level of the microcontroller low, resetting the low-power microcontroller.

[0025] The microcontroller 2 is connected to the six-axis attitude sensor module 3 via the SPI interface, and the microcontroller 2 is connected to the temperature and humidity sensor 4 via the IIC interface.

[0026] The six-axis attitude sensor module 3 includes a three-axis accelerometer 31 and a three-axis gyroscope 32. In this embodiment, the high-precision six-axis attitude sensor module 3 integrates the three-axis accelerometer 31 and the three-axis gyroscope 32. The three-axis accelerometer 31 measures the gravitational acceleration in the X, Y, and Z directions under static conditions and the angular velocities in the X, Y, and Z axes under dynamic conditions. Through analysis and calculation, the tilt angles of the XY plane, YZ plane, and XZ plane, as well as the angle between each axis and the reference position, can be calculated to obtain the attitude solution of the power pole and comprehensively evaluate its tilt state.

[0027] The working process of this utility model is as follows: The monitoring device is fixedly connected to the fixed connecting plate 7 by threading the top of the first housing 11 to the fixed connecting plate 7. Then, the U-shaped bayonet 71 of the fixed connecting plate 7 is inserted into the horizontal plane of the L-shaped angle steel 100 of the tower. Two fixing bolts pass through the fixed connecting plate 7 to press it tightly to the angle steel 100. Then, the threaded rod 82 passes through the waist-shaped slot 72 on the fixed connecting plate 7 and connects to the vertical side of the angle steel 100 of the tower. Finally, the fastener 13 with a nut and spring washer 131 is tightened. The two fixing bolts and the hook 8 form a stable triangular support and a stable and reliable connection structure.

[0028] When the monitoring device monitors the tower, the microcontroller 2 controls the six-axis attitude sensor module 3 to collect three-axis acceleration data and three-axis angular velocity data respectively. After the three-axis acceleration data and angular velocity data are collected, they are processed and converted into the attitude angle of the actual monitoring device. By comparing the attitude angle of the current monitoring device with the attitude angle calibrated after installation, the relative tilt angle of the tower can be preliminarily determined. Once the relative tilt angle of the tower exceeds the set threshold (i.e., the tilt state is abnormal), the microcontroller 2 sends an alarm signal to the mobile terminal 20 through the Bluetooth module to facilitate timely maintenance. At the same time, the microcontroller 2 reports the data to the remote master station 10 through the communication module 5.

[0029] Finally, it should be emphasized that the above description is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-power power pole tilt monitoring device, comprising a monitoring device mounted on the power pole via a connecting assembly, characterized in that: The monitoring device includes a monitoring housing (1), a microcontroller (2), a six-axis attitude sensor module (3), a temperature and humidity sensor (4), a communication module (5), and a power supply, all housed within the monitoring housing (1). The microcontroller (2) is electrically connected to the six-axis attitude sensor module (3) and the temperature and humidity sensor (4), respectively. The microcontroller is connected to a remote master station (10) via the communication module (5). The connection assembly includes a fixed connection plate (7) and a hook (8). The hook (8) includes a hook portion (81) and a threaded rod portion (82) integrally formed with the hook portion (81). A bolt is threaded onto the threaded rod portion (82). A U-shaped bayonet (71) is provided on the fixed connection plate (7). A waist-shaped slot (72) is provided on the fixed connection plate (7). The threaded rod portion (82) extends out of the waist-shaped slot (72) and is locked by a bolt (9).

2. The low-power power pole tilt monitoring device according to claim 1, characterized in that: The monitoring housing (1) includes a first housing (11) and a second housing (12) fastened to the bottom of the first housing (11). The first housing (11) is provided with a waterproof groove (111) and a sealing ring (112) is installed in the waterproof groove (111). The four corners of the top of the first housing (11) are provided with fixing screw holes and nuts (13) are inserted into the fixing screw holes. The second housing (12) is provided with a plurality of vent holes (121) and the vent holes (121) are corresponding to the temperature and humidity sensor (4). The bottom of the second housing (12) is arc-shaped.

3. The low-power power pole tilt monitoring device according to claim 1, characterized in that: The communication module (5) is equipped with a communication encryption module.

4. The low-power power pole tilt monitoring device according to claim 1, characterized in that: The microcontroller (2) is equipped with an independent watchdog module.

5. The low-power power pole tilt monitoring device according to claim 1, characterized in that: The microcontroller (2) is connected to the six-axis attitude sensor module (3) via the SPI interface, and the microcontroller (2) is connected to the temperature and humidity sensor (4) via the IIC interface.

6. The low-power power pole tilt monitoring device according to claim 1, characterized in that: The six-axis attitude sensor module (3) includes a three-axis accelerometer (31) and a three-axis gyroscope (32).

7. The low-power power pole tilt monitoring device according to claim 1, characterized in that: The monitoring housing (1) is also equipped with a Bluetooth module, which is connected to a mobile terminal (20).

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