Railway electric power iron tower state intelligent monitoring device

Abstract

The utility model discloses a railway electric power iron tower state intelligent monitoring device, which comprises a data acquisition unit, a data receiving unit, a main control unit, a data communication unit and a data analysis processing unit, the data receiving unit communicates with the data communication unit through the main control unit; the output end of the data communication unit is connected with the input end of the data analyzing and processing unit, and the data receiving unit comprises a positioning unit, an inclination angle measuring unit and a meteorological monitoring unit. According to the intelligent monitoring device for the state of the railway electric power iron tower, the 5G transmission technology and the uninterrupted heartbeat packet technology are applied, and the intelligent monitoring system software for the posture of the railway electric power iron tower is utilized, so that the power supply iron tower of a rock peak station is monitored and applied on line, and a scientific basis is provided for analyzing the safety and the bearing capacity of the iron tower.

Description

Technical Field

[0001] The utility model relates to the technical field of railway engineering construction and operation management, in particular to an intelligent monitoring device for the status of a railway power tower. Background Art

[0002] Railway power towers are numerous, widely distributed, and close to the lines. Once they tilt or collapse, they will pose serious safety hazards to driving. The traditional monitoring method for railway power towers is manual inspection. Due to the complex environment around the towers, manual inspection consumes a lot of manpower and material resources, and has a large workload, low efficiency, low accuracy, and difficulty in achieving comprehensive monitoring.

[0003] With the continuous development of IoT technologies such as sensor technology and wireless communication technology, online monitoring of railway power towers has become possible. Both at home and abroad, research on online monitoring systems based on advanced sensor detection technology, wireless communication technology, and data processing, storage and analysis technology has been carried out. There are also many successful applications and reports on the use of acceleration sensors to monitor the status of railway power towers. USI, an American company, was the first to start real-time online monitoring, fault detection and fault diagnosis in the power industry and has rich experience. JPS, a Japanese company, also initially began research in the field of maintenance prediction based on online monitoring in the 1980s.

[0004] Although the research in the field of online monitoring in my country started late, the research on key technologies for large power grid security, key technologies for digital power grids, and key technologies for power electronics in power systems organized by the State Grid Corporation of China has promoted the level of informationization, automation, digitization, and interactivity of power grids. The State Grid Corporation of China's "SG186" project, power communication construction, user electricity information collection system, and asset life cycle management research and application have laid a solid foundation for the construction of smart grids.

[0005] Therefore, there is an urgent need for an intelligent monitoring device for the posture of railway power towers to provide an important scientific basis for analyzing the safety and carrying capacity of the towers. Utility Model Content

[0006] The purpose of this utility model is to provide an intelligent monitoring device for the status of a railway power tower, which uses 5G transmission technology and uninterrupted heartbeat packet technology, and utilizes the railway power tower posture intelligent monitoring system software to perform online monitoring of the Yanfeng Station power supply tower, providing a scientific basis for analyzing the safety and carrying capacity of the tower.

[0007] To achieve the above-mentioned purpose, the utility model provides a railway power tower state intelligent monitoring device, comprising a data acquisition unit, a data receiving unit, a main control unit, a data communication unit and a data analysis and processing unit, wherein the input end of the main control unit is connected to a power supply unit, and the data receiving unit communicates with the data communication unit through the main control unit;

[0008] The output end of the data communication unit is connected to the input end of the data analysis and processing unit, and the data receiving unit includes a positioning unit, a tilt angle measurement unit and a meteorological monitoring unit.

[0009] Preferably, the inclination measurement unit includes an inclination sensor, an attitude solution processor and a memory, and the inclination sensor includes an MCU, a three-axis MEMS acceleration sensor, a three-axis MEMS gyroscope sensor, an analog-to-digital conversion circuit and a communication unit.

[0010] Preferably, the three-axis MEMS acceleration sensor comprises a base and a fixed frame arranged above the base, a mass block, an elastic element and an electrode are arranged inside the fixed frame, and a connecting column penetrating the bottom end of the mass block is arranged at the center position of the upper end of the base;

[0011] The top of the mass block is fixedly connected to the fixed frame through the elastic element, a piezoelectric chip is arranged in the cavity formed by the mass block and the base, the electrode penetrates the piezoelectric chip, and the penetrating end of the electrode is connected to the data acquisition module through a wire.

[0012] Preferably, the positioning unit includes a positioning system, a differential data module, a data output end and a transceiver antenna, the data output end is connected to the input end of the main control unit, and the meteorological monitoring unit includes a temperature sensor, a humidity sensor, a wind speed sensor and a wind direction sensor.

[0013] Preferably, the wind speed sensor is made of polycarbonate and is provided with an RS485 communication interface.

[0014] Preferably, a voltage conversion circuit is connected between the data receiving unit and the data communication unit.

[0015] Preferably, the data analysis and processing unit includes a data storage system, a data filtering system and a data fusion analysis system.

[0016] Preferably, the output end of the data analysis and processing unit is connected to a warning display module.

[0017] Therefore, the utility model adopts the above-mentioned railway power tower state intelligent monitoring device, and the beneficial effects are as follows:

[0018] (1) The hardware part of the monitoring device of the utility model adopts an integrated multi-source monitoring terminal fusion design.

[0019] (2) The utility model uses TCP / IP uninterrupted heartbeat packets and 5G communication protocol for uninterrupted real-time uploading and real-time analysis.

[0020] (3) The utility model realizes intelligent monitoring and intelligent early warning and forecasting of the posture of railway power towers.

[0021] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of an embodiment of an intelligent monitoring device for the state of a railway power tower according to the utility model;

[0023] Figure 2 This is a schematic diagram of a wind speed sensor circuit in an embodiment of an intelligent monitoring device for the state of a railway power tower according to the utility model;

[0024] Figure 3 This is a circuit schematic diagram of a temperature and humidity sensor of an embodiment of an intelligent monitoring device for the state of a railway power tower according to the utility model;

[0025] Figure 4 This is a working principle diagram of the Beidou satellite positioning system of an embodiment of the utility model of an intelligent monitoring device for the status of a railway power tower;

[0026] Figure 5 This is a schematic diagram of the inclination sensor circuit of an embodiment of the utility model of an intelligent monitoring device for the state of a railway power tower;

[0027] Figure 6 This is a structural diagram of an inclination sensor of an embodiment of an intelligent monitoring device for the state of a railway power tower according to the utility model;

[0028] Figure 7 This is a cross-sectional view of a tilt sensor of an embodiment of an intelligent monitoring device for the state of a railway power tower according to the utility model;

[0029] Figure 8 The utility model is a schematic diagram of a posture solution method of an embodiment of an intelligent monitoring device for the state of a railway power tower.

[0030] Reference numerals

[0031] 1. Base; 2. Fixed frame; 3. Mass block; 4. Elastic element; 5. Electrode; 6. Connecting column; 7. Piezoelectric chip. DETAILED DESCRIPTION

[0032] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0033] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] As shown in the figure, an intelligent monitoring device for the status of railway power towers includes a data acquisition unit, a data receiving unit, a main control unit, a data communication unit and a data analysis and processing unit. The hardware adopts an integrated multi-source monitoring terminal fusion system, and the software part is an intelligent management terminal developed using a B / S three-layer architecture model, which realizes automatic data collection, real-time processing and online analysis, and provides functions such as intelligent risk early warning and forecasting of power tower posture.

[0035] The input end of the main control unit is connected to a solar power supply unit. The solar power supply unit uses the photoelectric effect to directly convert solar radiation energy into electrical energy. The basic device for light-to-electricity conversion is a solar cell. A solar cell is a device that directly converts solar energy into electrical energy due to the photovoltaic effect. It is a semiconductor photodiode. When sunlight shines on the photodiode, the photodiode will convert the solar energy into electrical energy and generate current. When many batteries are connected in series or in parallel, they can become a solar cell array with relatively large output power. Solar cells have three advantages: permanence, cleanliness and flexibility. Solar cells have a long life. As long as the sun exists, solar cells can be used for a long time with a one-time investment, and will not cause environmental pollution.

[0036] The data communication unit adopts a 485 communication module, and the communication protocol adopts TCP / IP uninterrupted heartbeat packet technology and 5G communication protocol. The data receiving unit communicates with the data communication unit through the main control unit. A voltage conversion circuit is connected between the data receiving unit and the data communication unit, and the output end of the data communication unit is connected to the input end of the data analysis and processing unit.

[0037] The data analysis and processing unit includes a data storage system, a data filtering system, and a data fusion analysis system. The data storage system is used for processing and storing structured data and unstructured data, the data filtering system is used for denoising and normalizing the monitoring data, and the data fusion analysis system performs multivariate statistical analysis on the monitoring data, such as comparative analysis and discriminant analysis. The output end of the data analysis and processing unit is connected to a warning display module, which issues warning information based on the detection results and displays relevant information through a display device.

[0038] The data receiving unit includes a positioning unit, an inclination measurement unit and a meteorological monitoring unit. The positioning unit includes a positioning system, a differential data module, a data output terminal and a transceiver antenna. The positioning unit can select a Beidou high-precision positioning device including: (a) Satellite positioning system: receiving satellite signals including BDS: B1I, B2I, B3I, B1C, B2a, B2b1; GPS: L1C / A, L1C1, L2P(Y), L2C, L5; GLONASS: L1, L2; Galileo: E1, E5a, E5b; QZSS: L1, L2, L5, etc., with a total of 1400 channels; (b) Differential data device: using the RTCM3.X module for differential calculation to determine the coordinates of the monitoring point; (c) Data output terminal: using RTCM3.X and module NMEA0183 for monitoring data structured processing and signal output; (d) Beidou built-in antenna for satellite signal reception and transmission.

[0039] The BeiDou satellite positioning system uses the instantaneous position of high-speed moving satellites as known starting data and adopts the method of spatial distance resection to determine the position of the point to be measured. BeiDou high-precision receivers, through the ground reference station network, use satellites, mobile communications, digital broadcasting and other broadcasting methods to provide 1-2 meters, decimeters and centimeters in real-time high-precision navigation and positioning services within the service area.

[0040] The data output terminal is connected to the input terminal of the main control unit. The meteorological monitoring unit includes a temperature sensor for measuring the ambient temperature, a humidity sensor for measuring the atmospheric humidity, a wind speed (ultrasonic) sensor for measuring the wind speed and level, and a wind direction (ultrasonic) sensor for measuring the wind direction. In actual accidents such as the collapse of towers, the impact of strong winds on accidents cannot be ignored. The emergence of strong winds can easily cause the transmission lines to dance, resulting in uneven force on the towers, which can easily lead to structural deformation of the towers. Therefore, it is very necessary to monitor the wind speed.

[0041] The utility model adopts a three-cup wind speed sensor made of polycarbonate, which has strong acid and alkali resistance and oxidation resistance. The wind speed measurement range of the three-cup wind speed sensor is 0-30m / s, the measurement accuracy is ±1m / s, the response time is less than 5s, the communication baud rate is set to 9600, the power consumption is less than 1W, the working temperature is between -30℃ and 80℃, the humidity of the working environment is 0-100%RH, and the communication interface is RS485. The response time of the temperature sensor and the humidity sensor are respectively: temperature <2s, humidity <8s, and the measurement ranges are respectively: temperature: -40~120℃, humidity: 100%RH.

[0042] The inclination measurement unit includes an inclination sensor, an attitude calculation processor and a memory. The inclination sensor is used to monitor the inclination direction and inclination angle of the tower. The inclination sensor is an acceleration sensor that uses the principle of inertia. The inclination sensor includes an MCU, a three-axis MEMS acceleration sensor, a three-axis MEMS gyroscope sensor, an analog-to-digital conversion circuit and a communication unit. It is used to monitor the inclination of the tower. Six 16-bit ADCs are used to convert the accelerometer into a digital signal and output it through the IIC interface. The measurable range is from ±2g to ±16g.

[0043] The sensitive element of the three-axis MEMS acceleration sensor mainly includes a base 1 and a fixed frame 2 arranged above the base 1, a mass block 3, an elastic element 4 and an electrode 5 are arranged inside the fixed frame 2, and a connecting column 6 that penetrates the bottom end of the mass block 3 is arranged at the center position of the upper end of the base 1; the top of the mass block 3 is fixedly connected to the fixed frame 2 through the elastic element 4, a piezoelectric chip 7 is arranged in the cavity formed by the mass block 3 and the base 1, the electrode 5 penetrates the piezoelectric chip 7, and the penetrating end of the electrode 5 is connected to the data acquisition module through a wire.

[0044] When the mass block 3 is subjected to acceleration, a force F will be generated, and the three-axis MEMS acceleration sensor is used to measure acceleration. When acceleration a acts on the three-axis MEMS acceleration sensor, the mass block 3 of the three-axis MEMS acceleration sensor will generate an inertial force F, which will act on the elastic element 4 of the three-axis MEMS acceleration sensor, and will generate a strain proportional to the inertial force F. At this time, the piezoresistors on the elastic element 4 will also produce a change, and the Wheatstone bridge composed of piezoresistors outputs a voltage signal proportional to the change in the piezoresistors.

[0045] The monitoring of the tower attitude by the utility model device requires the use of different frequency characteristics of the acceleration sensor and the gyroscope sensor. The acceleration sensor is easily affected by external force factors such as vibration, while the gyroscope sensor will produce large errors when it is stationary for a long time. The frequency characteristics of the acceleration sensor and the gyroscope sensor are complementary, and the corresponding interference source is filtered out by high-pass and low-pass filters, that is, a reference direction vector is established by establishing a rotation matrix, and the established reference direction vector is cross-multiplied with the data of the accelerometer and the magnetometer to calculate the error value between the measured data and the reference vector. At the same time, a proportional integral adjustment mechanism is introduced into the system, and the calculated error is used to compensate the data measured by the gyroscope through proportional integral adjustment, and then the value of the gyroscope after error compensation is involved in the quaternion operation to iteratively calculate the attitude of the carrier, and the estimation of the attitude of the carrier is completed, and the attitude angle calculated is used as the observation value of the Kalman filter.

[0046] Therefore, the utility model adopts the above-mentioned intelligent monitoring device for the status of railway power towers, and through the use of 5G transmission technology and uninterrupted heartbeat packet technology, uses the railway power tower posture intelligent monitoring system software to perform online monitoring of the Yanfeng Station power supply tower, and obtains important information such as the relationship between the amplitude of the tower mast swing and environmental conditions and the frequency of the tower mast swing, which provides a scientific basis for analyzing the safety and carrying capacity of the tower.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A railway power tower state intelligent monitoring device, characterized in that: It includes a data acquisition unit, a data receiving unit, a main control unit, a data communication unit and a data analysis and processing unit, wherein the input end of the main control unit is connected to a power supply unit, and the data receiving unit communicates with the data communication unit through the main control unit; The output end of the data communication unit is connected to the input end of the data analysis and processing unit, and the data receiving unit includes a positioning unit, a tilt angle measurement unit and a meteorological monitoring unit.

2. The intelligent monitoring device for the state of a railway power tower according to claim 1 is characterized in that: The inclination measurement unit includes an inclination sensor, an attitude calculation processor and a memory, and the inclination sensor includes an MCU, a three-axis MEMS acceleration sensor, a three-axis MEMS gyroscope sensor, an analog-to-digital conversion circuit and a communication unit.

3. The intelligent monitoring device for the state of a railway power tower according to claim 2 is characterized in that: The three-axis MEMS acceleration sensor includes a base and a fixed frame arranged above the base, a mass block, an elastic element and an electrode are arranged inside the fixed frame, and a connecting column penetrating the bottom end of the mass block is arranged at the center position of the upper end of the base; The top of the mass block is fixedly connected to the fixing frame through the elastic element, a piezoelectric chip is arranged in the cavity formed by the mass block and the base, the electrode penetrates the piezoelectric chip, and the penetrating end of the electrode is connected to the data acquisition unit through a wire.

4. The intelligent monitoring device for the railway power tower state according to claim 1 is characterized in that: The positioning unit includes a positioning system, a differential data module, a data output end and a transceiver antenna, the data output end is connected to the input end of the main control unit, and the meteorological monitoring unit includes a temperature sensor, a humidity sensor, a wind speed sensor and a wind direction sensor.

5. The intelligent monitoring device for the state of a railway power tower according to claim 4 is characterized in that: The wind speed sensor is made of polycarbonate and is provided with an RS485 communication interface.

6. The intelligent monitoring device for railway power tower status according to claim 1 is characterized in that: A voltage conversion circuit is connected between the data receiving unit and the data communication unit.

7. The intelligent monitoring device for railway power tower status according to claim 1 is characterized in that: The data analysis and processing unit includes a data storage system, a data filtering system and a data fusion analysis system.

8. The intelligent monitoring device for railway power tower status according to claim 1 is characterized in that: The output end of the data analysis and processing unit is connected to a warning display module.

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