A holographic intelligent perception and early warning system for the operation status of concrete poles

Abstract

The present invention proposes a holographic intelligent perception and early warning system for the operation status of a concrete pole. The holographic intelligent perception and early warning system comprises a data acquisition module. The data acquisition module establishes a data acquisition link through cables with an anemometer and anemometer arranged on the top of the pole, an inclination sensor of the pole, a rebar gauge and a concrete surface strain gauge and a temperature sensor arranged on the pole body, and an earth pressure box sensor and a temperature and humidity sensor arranged at the pole foundation. The present invention tailors a set of holographic intelligent perception and early warning systems for the operation status of the concrete pole. By monitoring various key parameters of the pole, the operation status of the pole can be fully and comprehensively grasped in real time, and danger can be warned.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid operation and maintenance, and in particular to a holographic intelligent perception and early warning system for the operation status of a concrete pole. Background Art

[0002] In recent years, global wind disasters have been severe, with the frequency and intensity of typhoons showing high values. Meteorological experts also admit that it has always been a global problem for human society to deal with extreme convective weather.

[0003] The operating status of the poles directly determines the safe and stable operation of the distribution network. As the poles supporting the distribution network, their ability to resist external forces is relatively weak compared to the iron towers of the transmission network. Their operating status can only be identified through images by means of drone inspections, manual inspections, and video monitoring. Holographic intelligent perception methods cannot be used for key pole positions to truly and comprehensively reflect the operating status of the poles, and their dangerous status cannot be warned. This is also the current bottleneck in the application of poles. The parameters that characterize the operating status of the concrete poles include concrete surface strain, internal steel bar tension, pole top inclination, and soil pressure at the chuck. The parameters that characterize the operating environment of the poles include wind speed, wind direction, and temperature. Effective and unified monitoring of these parameters requires corresponding solutions. Summary of the invention

[0004] The present invention proposes a holographic intelligent perception and early warning system for the operating status of concrete poles, which is tailor-made for concrete poles. By monitoring various key parameters of the poles, the operating status of the poles can be fully understood in real time, and dangers can be warned.

[0005] The present invention adopts the following technical solutions.

[0006] A holographic intelligent perception and early warning system for the operation status of a concrete pole, the holographic intelligent perception and early warning system comprising a data acquisition module, the data acquisition module establishes a data acquisition link through cables with an anemometer and an inclination sensor of the pole top, a steel bar meter and a concrete surface strain gauge and a temperature sensor arranged at the pole body, and an earth pressure box sensor and a temperature and humidity sensor arranged at the pole base;

[0007] The data acquisition module collects the pole operation status data according to a preset threshold interval and a sampling frequency corresponding to the threshold interval; the threshold interval is related to the concrete strain and the steel bar working state;

[0008] The method for setting the threshold interval is as follows: the system uses finite element software to perform numerical simulation with the design value of the pole and the soil conditions at the location of the pole to obtain the working condition response of the pole under different wind speeds, different loads and different foundation soil moisture content. The working condition response includes the concrete surface strain at the maximum bending moment for characterizing the working state of the pole body, the internal steel bar stress, the overall deformation of the pole and the change in the soil pressure of the foundation, and uses this to set multiple threshold intervals associated with the concrete strain and the steel bar working state.

[0009] The threshold interval is a signal acquisition response interval, including a wind speed threshold interval, a steel bar strain threshold interval, a concrete surface strain threshold interval and an earth pressure threshold interval; the data acquisition module transmits the collected data to a remote management agency in an intelligent variable frequency transmission manner; when the collected pole operation status data is within the signal acquisition response interval, the transmission frequency of the data acquisition module is adjusted to the corresponding threshold interval.

[0010] The steel bar gauge strain threshold range and concrete surface strain threshold range are specifically: the ultimate strain below 70% is used as the elastic safety range of concrete and steel bars, the ultimate strain of 70% to 90% is used as the plastic warning range of the working state of concrete and steel bars, and the ultimate strain above 90% is used as the concrete cracking danger range and the steel bar fracture range.

[0011] The method for adjusting the transmission frequency of the data acquisition module to the corresponding threshold interval is as follows: the elastic safety interval transmits data at an interval of 1 hour; the plastic warning interval first issues a warning in the background, and then transmits data at an interval of 5 minutes; the concrete cracking danger interval and the steel bar fracture interval transmit data at an interval of 10 seconds.

[0012] The holographic intelligent perception and early warning system also sets three intervals for foundation soil pressure and pole inclination according to the finite element simulation results, specifically: the safe low-frequency data collection interval is below 70% of the ultimate soil pressure and ultimate inclination, the early warning medium- and high-frequency data collection interval is between 70% and 90% of the ultimate soil pressure and ultimate inclination, and the dangerous high-frequency data collection interval is above 90% of the ultimate soil pressure and ultimate inclination.

[0013] The method of the holographic intelligent perception and early warning system for determining the cause of the pole overturning is as follows: coupling the wind speed and direction, the pole inclination, the data measured by the earth pressure box sensor and the concrete surface strain to determine whether the cause of the pole overturning is excessive deformation of the pole or failure of the foundation;

[0014] The holographic intelligent perception and early warning system adopts the following method to identify the internal defects of electric poles: multiple data coupling is performed based on wind speed data, electric pole inclination angle, concrete surface strain, and steel bar meter force data, and the multiple data coupling results are used to verify whether the internal steel bars of the electric poles are corroded and whether the electric poles have deep cracks.

[0015] The anemometer is a wind speed and direction sensor used to measure the actual wind speed and direction at the pole position, installed at the cross arm of the pole to monitor the wind speed and direction;

[0016] The steel bar meter is installed in series with two steel bars at the embedded position of the pole, and is used to monitor the stress of the steel bars in the cross-line direction at the cross section of the embedded position of the pole. The steel bar meter is connected to the data acquisition device with the lead wire;

[0017] The concrete surface strain gauge is attached to the surface of the pole embedding part, and is used to monitor the concrete stress along the horizontal line direction and the line direction of the cross section of the pole embedding part;

[0018] The temperature sensor is arranged beside the concrete surface strain gauge, and is used to monitor the ambient temperature at the concrete surface strain gauge, and leads are led out together with the concrete surface strain gauge to connect the data acquisition device;

[0019] The earth pressure box of the earth pressure box sensor is buried in the front and rear positions of the chuck of the pole foundation, and is used to monitor the earth pressure changes in the environment near the pole foundation. The temperature and humidity sensor is installed near the earth pressure box, and is used to monitor the groundwater level at the chuck, the freezing and thawing conditions of the foundation soil, and the foundation soil temperature. The lead wire is led out together with the earth pressure box to connect the data acquisition device;

[0020] The pole tilt sensor is a high-precision dual-axis tilt sensor installed on the top of the pole and used to monitor the pole top deflection in both the horizontal and along-line directions of the pole top. Lead wires are also drawn out for connecting a data acquisition device.

[0021] There are two data acquisition modules, rebar meters, and earth pressure boxes. One of the data acquisition modules is installed below the cross arm of the pole to collect and send data from the wind speed and direction sensor, the inclination sensor, and two rebar meters. The other is installed at the bottom of the pole 3 meters above the ground to collect and send data from two earth pressure boxes, a temperature and humidity sensor, two concrete surface strain gauges, and a temperature sensor.

[0022] The holographic intelligent sensing and early warning system is connected to a solar power supply device. The exposed wires of the holographic intelligent sensing and early warning system at the electric pole are protected by a wire threading tube, and the wire threading tube is fixed to the electric pole with an aluminum tape.

[0023] The advantages of the present invention are:

[0024] 1. The present invention adopts holographic intelligent sensing means according to the characteristics of electric poles, monitors and integrates multi-dimensional data to comprehensively evaluate the operating status of electric poles and warn of dangers. It can more truly reflect the various operating parameters of electric poles than the existing single video monitoring and image monitoring technologies, and truly realize the digital and intelligent operation of electric poles.

[0025] 2. The present invention can not only sense the state of concrete poles, but also identify various defects of poles in operation through deep fusion of multi-dimensional data, which is not achievable by existing means.

[0026] 3. The present invention adopts intelligent variable frequency data transmission and formulates different data transmission frequency mechanisms by setting different threshold intervals, which can save power supply and retain all key data to the maximum extent.

[0027] 4. The present invention adopts solar energy for power supply and transmits the operating status of the poles in real time, which can realize the elimination of inspection of the poles, reduce the energy consumption of machine inspection and manual inspection, improve the intelligence level of the distribution lines and realize low-carbon operation.

[0028] The present invention aims to tailor a set of holographic intelligent perception and early warning system for the operation status of concrete poles, monitor various key parameters of the poles, and comprehensively grasp the operation status of the poles in real time and warn of dangers. The present invention provides technical guarantee for the safe and stable operation of the distribution network, and can realize the inspection-free operation status of the poles, saving a lot of manpower and material resources, and greatly improving the safety of pole operation.

[0029] The system described in the present invention consists of four parts: holographic intelligent perception, data collection and transmission, solar power supply, and background evaluation and early warning. The monitoring data of the holographic intelligent perception part include wind speed, wind direction, humidity and temperature of each part at the height of the pole cross arm, stress and strain on the surface of the pole body concrete, stress of prestressed and non-prestressed steel bars, soil pressure at the foundation chuck, and inclination angle of the top of the pole in the horizontal direction of the line and the horizontal line. These monitoring data collected by the present invention can completely cover various key parameters of the pole body and operating environment parameters in operation, and comprehensively reflect the overall working status of the pole and the working performance of each part. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0031] Attached Figure 1 It is a schematic diagram of the principle of the present invention;

[0032] Attached Figure 2 It is a schematic diagram of the installation of each sensor at the pole;

[0033] In the figure: 1-telephone pole tilt sensor; 2-wind speed and direction instrument; 3-data acquisition module; 4-concrete surface strain gauge; 5-earth pressure box sensor; 6-telephone pole; 7-telephone pole foundation. DETAILED DESCRIPTION

[0034] As shown in the figure, a holographic intelligent perception and early warning system for the operation status of a concrete pole is provided. The holographic intelligent perception and early warning system includes a data acquisition module. The data acquisition module establishes a data acquisition link through cables with an anemometer and an inclination sensor of the pole top, a steel bar meter and a concrete surface strain gauge and a temperature sensor provided at the pole body, and an earth pressure box sensor and a temperature and humidity sensor provided at the pole base;

[0035] The data acquisition module collects the pole operation status data according to a preset threshold interval and a sampling frequency corresponding to the threshold interval; the threshold interval is related to the concrete strain and the steel bar working state;

[0036] The method for setting the threshold interval is as follows: the system uses finite element software to perform numerical simulation with the design value of the pole and the soil conditions at the location of the pole to obtain the working condition response of the pole under different wind speeds, different loads and different foundation soil moisture content. The working condition response includes the concrete surface strain at the maximum bending moment for characterizing the working state of the pole body, the internal steel bar stress, the overall deformation of the pole and the change in the soil pressure of the foundation, and uses this to set multiple threshold intervals associated with the concrete strain and the steel bar working state.

[0037] The threshold interval is a signal acquisition response interval, including a wind speed threshold interval, a steel bar strain threshold interval, a concrete surface strain threshold interval and an earth pressure threshold interval; the data acquisition module transmits the collected data to a remote management agency in an intelligent variable frequency transmission manner; when the collected pole operation status data is within the signal acquisition response interval, the transmission frequency of the data acquisition module is adjusted to the corresponding threshold interval.

[0038] The steel bar gauge strain threshold range and concrete surface strain threshold range are specifically: the ultimate strain below 70% is used as the elastic safety range of concrete and steel bars, the ultimate strain of 70% to 90% is used as the plastic warning range of the working state of concrete and steel bars, and the ultimate strain above 90% is used as the concrete cracking danger range and the steel bar fracture range.

[0039] The method for adjusting the transmission frequency of the data acquisition module to the corresponding threshold interval is as follows: the elastic safety interval transmits data at an interval of 1 hour; the plastic warning interval first issues a warning in the background, and then transmits data at an interval of 5 minutes; the concrete cracking danger interval and the steel bar fracture interval transmit data at an interval of 10 seconds.

[0040] The holographic intelligent perception and early warning system also sets three intervals for foundation soil pressure and pole inclination according to the finite element simulation results, specifically: the safe low-frequency data collection interval is below 70% of the ultimate soil pressure and ultimate inclination, the early warning medium- and high-frequency data collection interval is between 70% and 90% of the ultimate soil pressure and ultimate inclination, and the dangerous high-frequency data collection interval is above 90% of the ultimate soil pressure and ultimate inclination.

[0041] The method of the holographic intelligent perception and early warning system for determining the cause of the pole overturning is as follows: coupling the wind speed and direction, the pole inclination, the data measured by the earth pressure box sensor and the concrete surface strain to determine whether the cause of the pole overturning is excessive deformation of the pole or failure of the foundation;

[0042] The holographic intelligent perception and early warning system adopts the following method to identify the internal defects of electric poles: multiple data coupling is performed based on wind speed data, electric pole inclination angle, concrete surface strain, and steel bar meter force data, and the multiple data coupling results are used to verify whether the internal steel bars of the electric poles are corroded and whether the electric poles have deep cracks.

[0043] The anemometer 2 is a wind speed and direction sensor used to measure the actual wind speed and direction at the pole position, installed at the cross arm of the pole 6, and used to monitor the wind speed and direction;

[0044] The steel bar meter is installed in series with two steel bars at the embedded position of the pole, and is used to monitor the stress of the steel bars in the cross-line direction at the cross section of the embedded position of the pole. The steel bar meter is connected to the data acquisition device with the lead wire;

[0045] The concrete surface strain gauge 4 is attached to the surface of the pole embedding part, and is used to monitor the concrete stress along the horizontal line direction and the line direction of the cross section of the pole embedding part;

[0046] The temperature sensor is arranged beside the concrete surface strain gauge, and is used to monitor the ambient temperature at the concrete surface strain gauge, and leads are led out together with the concrete surface strain gauge to connect the data acquisition device;

[0047] The soil pressure box of the soil pressure box sensor 5 is buried in the front and rear positions of the chuck of the pole foundation 7, and is used to monitor the soil pressure changes in the environment near the pole foundation. The temperature and humidity sensor is installed near the soil pressure box, and is used to monitor the groundwater level at the chuck, the freezing and thawing conditions of the foundation soil, and the foundation soil temperature. The lead wire is led out together with the soil pressure box to connect the data acquisition device;

[0048] The pole tilt sensor 1 is a high-precision dual-axis tilt sensor, which is installed on the top of the pole and is used to monitor the pole top deflection in both the horizontal and along-line directions of the pole top. At the same time, the lead wires are used to connect the data acquisition device.

[0049] There are two data acquisition modules, rebar meters, and earth pressure boxes. One of the data acquisition modules 3 is installed below the cross arm of the pole to collect and send data from the wind speed and direction sensor, the inclination sensor, and two rebar meters. The other is installed at the lower part of the pole 3 meters above the ground to collect and send data from two earth pressure boxes, a temperature and humidity sensor, two concrete surface strain gauges, and a temperature sensor.

[0050] The holographic intelligent sensing and early warning system is connected to a solar power supply device. The exposed wires of the holographic intelligent sensing and early warning system at the electric pole are protected by a wire threading tube, and the wire threading tube is fixed to the electric pole with an aluminum tape.

Claims

1. A holographic intelligent perception and early warning system for the operation status of concrete poles, characterized by: The holographic intelligent perception and early warning system includes a data acquisition module, which establishes a data acquisition link through cables with an anemometer and an inclination sensor of the pole top, a steel bar gauge and a concrete surface strain gauge and a temperature sensor at the pole body, and an earth pressure box sensor and a temperature and humidity sensor at the pole base; The data acquisition module collects the pole operation status data according to a preset threshold interval and a sampling frequency corresponding to the threshold interval; the threshold interval is related to the concrete strain and the steel bar working state; The method for setting the threshold interval is as follows: the system uses finite element software to perform numerical simulation with the design value of the pole and the soil conditions at the location of the pole to obtain the working condition response of the pole under different wind speeds, different loads and different moisture content of the foundation soil. The working condition response includes the surface strain of the concrete at the maximum bending moment, the stress of the internal steel bars, the overall deformation of the pole and the change of the soil pressure of the foundation, which are used to characterize the working state of the pole body, and thereby sets multiple threshold intervals associated with the concrete strain and the working state of the steel bars; The anemometer is a wind speed and direction sensor used to measure the actual wind speed and direction at the pole position, installed at the cross arm of the pole to monitor the wind speed and direction; The steel bar meter is installed in series with two steel bars at the embedded position of the pole, and is used to monitor the stress of the steel bars in the cross-line direction at the cross section of the embedded position of the pole. The steel bar meter is connected to the data acquisition device with the lead wire; The concrete surface strain gauge is attached to the surface of the pole embedding part, and is used to monitor the concrete stress along the horizontal line direction and the line direction of the cross section of the pole embedding part; The temperature sensor is arranged beside the concrete surface strain gauge, and is used to monitor the ambient temperature at the concrete surface strain gauge, and leads are led out together with the concrete surface strain gauge to connect the data acquisition device; The earth pressure box of the earth pressure box sensor is buried in the front and rear positions of the chuck of the pole foundation, and is used to monitor the earth pressure changes in the environment near the pole foundation. The temperature and humidity sensor is installed near the earth pressure box, and is used to monitor the groundwater level at the chuck, the freezing and thawing conditions of the foundation soil, and the foundation soil temperature. The lead wire is led out together with the earth pressure box to connect the data acquisition device; The pole tilt sensor is a high-precision dual-axis tilt sensor installed on the top of the pole and used to monitor the pole top deflection in both the horizontal and along-line directions of the pole top. Lead wires are also drawn out for connecting a data acquisition device.

2. According to claim 1, a holographic intelligent perception and early warning system for the operation status of concrete poles is characterized by: The threshold interval is a signal acquisition response interval, including a wind speed threshold interval, a steel bar strain threshold interval, a concrete surface strain threshold interval and an earth pressure threshold interval; the data acquisition module transmits the collected data to a remote management agency in an intelligent variable frequency transmission manner; when the collected pole operation status data is within the signal acquisition response interval, the transmission frequency of the data acquisition module is adjusted to the corresponding threshold interval.

3. According to claim 2, a holographic intelligent perception and early warning system for the operation status of concrete poles is characterized by: The steel bar gauge strain threshold range and concrete surface strain threshold range are specifically: the ultimate strain below 70% is used as the elastic safety range of concrete and steel bars, the ultimate strain of 70% to 90% is used as the plastic warning range of the working state of concrete and steel bars, and the ultimate strain above 90% is used as the concrete cracking danger range and the steel bar fracture range.

4. According to claim 3, a holographic intelligent perception and early warning system for the operation status of concrete poles is characterized by: The method for adjusting the transmission frequency of the data acquisition module to the corresponding threshold interval is as follows: the elastic safety interval transmits data at an interval of 1 hour; the plastic warning interval first issues a warning in the background, and then transmits data at an interval of 5 minutes; the concrete cracking danger interval and the steel bar fracture interval transmit data at an interval of 10 seconds.

5. According to claim 4, a holographic intelligent perception and early warning system for the operation status of concrete poles is characterized by: The holographic intelligent perception and early warning system also sets three intervals for foundation soil pressure and pole inclination according to the finite element simulation results, specifically: the safe low-frequency data collection interval is below 70% of the ultimate soil pressure and ultimate inclination, the early warning medium- and high-frequency data collection interval is between 70% and 90% of the ultimate soil pressure and ultimate inclination, and the dangerous high-frequency data collection interval is above 90% of the ultimate soil pressure and ultimate inclination.

6. The holographic intelligent perception and early warning system for the operation status of concrete poles according to claim 5 is characterized by: The method of the holographic intelligent perception and early warning system for determining the cause of the pole overturning is as follows: coupling the wind speed and direction, the pole inclination, the data measured by the earth pressure box sensor and the concrete surface strain to determine whether the cause of the pole overturning is excessive deformation of the pole or failure of the foundation; The holographic intelligent perception and early warning system adopts the following method to identify the internal defects of electric poles: multiple data coupling is performed based on wind speed data, electric pole inclination angle, concrete surface strain, and steel bar meter force data, and the multiple data coupling results are used to verify whether the internal steel bars of the electric poles are corroded and whether the electric poles have deep cracks.

7. The holographic intelligent perception and early warning system for the operation status of concrete poles according to claim 1 is characterized by: There are two data acquisition modules, rebar meters, and earth pressure boxes. One of the data acquisition modules is installed below the cross arm of the pole to collect and send data from the wind speed and direction sensor, the inclination sensor, and two rebar meters. The other is installed at the bottom of the pole 3 meters above the ground to collect and send data from two earth pressure boxes, a temperature and humidity sensor, two concrete surface strain gauges, and a temperature sensor.

8. The holographic intelligent perception and early warning system for the operation status of concrete poles according to claim 1 is characterized by: The holographic intelligent sensing and early warning system is connected to a solar power supply device. The exposed wires of the holographic intelligent sensing and early warning system at the electric pole are protected by a wire threading tube, and the wire threading tube is fixed to the electric pole with an aluminum tape.

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