JP2017133844A - Utility pole soundness determining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a utility pole soundness determining device that can determine soundness of utility poles without using any human labor and irrespective of the installed locations of the utility poles.SOLUTION: A high accuracy GPS 18 that acquires positional data on the basis of data from satellites is installed at the top of a utility pole and stores in a positional data memory 21 the positional data acquired by the high accuracy GPS 18. A positional data extractor 29 extracts as initial positional data positional data acquired immediately after the installation of the high accuracy GPS 18 out of the positional data acquired by the high accuracy GPS 18, and extracts as current positional data the latest positional data out of the positional data acquired by the high accuracy GPS 18. A displaced quantity calculator 30 calculates the displaced quantities of the current positional data and the initial positional data, and a soundness determining unit 31 determines the soundness of utility poles on the basis of the displaced quantity calculated by the displaced quantity calculator 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a utility pole soundness determination device that determines the soundness of a power pole based on a long-term displacement of the power pole.

  The utility poles are deformed in that direction over a long period of time by being pulled in the direction determined by the wired wires. At that time, the utility pole retains the resistance to bending moment and the ground is fixed, so that the entire utility pole is not inclined, but as shown in FIG. The upper part is gently bent in the direction of the electric wire 12.

  In the process in which the electric pole 11 is deformed in this way, the surface to be pulled is compressed, and the back side of the electric pole 11 is expanded, so that the crack 13 is generated in the concrete of the electric pole 11 as shown in FIG. When the crack 13 becomes large, moisture due to rain water or the like enters the inside of the utility pole 11 from the location of the crack 13, and the internal rebar constituting the utility pole 11 becomes wet and rust is generated. If such a state is left for a long period of time, the internal rebar breaks due to the progress of deterioration due to rust, and eventually the utility pole breaks.

  In order to avoid such a risk, the cracking aspect of the utility pole is periodically inspected visually, and if the crack width exceeds a certain threshold, the utility pole is rebuilt. Moreover, the contour data of the power pole is obtained using the total station, image analysis is performed, and the amount of deformation and curvature when the load is applied in a state where the soundness of the power pole is reduced by model analysis of the part where the curvature protrudes. Is calculated, and the degree of soundness of the part where the soundness is lowered is determined (for example, see Patent Document 1).

  JP 2005-337901 A

  However, since many electric poles exist in electric power equipment, visual inspection requires a lot of labor. On the other hand, when a total station is used, the installation location of the equipment is necessary, and the line of sight must be good between the total station and the survey point, and the area where the line of sight is blocked by buildings and trees, narrow areas, Surveying is difficult in areas with heavy traffic. In addition, calibration in the horizontal direction or the like is necessary before surveying, and it is necessary to set the survey point in advance, so that prior settings are complicated, and surveying at one place requires a lot of time. In addition, since the time-consuming surveying is performed manually, the labor cost also increases, so that the total cost is greatly increased compared to visual crack inspection.

  The objective of this invention is providing the utility pole soundness determination apparatus which can determine the soundness of a utility pole irrespective of the installation location of a utility pole, without relying on a human hand.

  The utility pole health judgment device according to the invention of claim 1 is a high-accuracy GPS that is installed at the top of a utility pole and acquires position data based on data from satellites, and position data that stores position data acquired by the high-accuracy GPS. The position where the storage unit and the position data acquired by the high-accuracy GPS are initially acquired as the initial position data, and the latest position data is extracted as the current position data. A data extraction unit; a displacement amount calculation unit that calculates a displacement amount between the current position data and the initial position data; and a sound state that determines the soundness of the utility pole based on the displacement amount calculated by the displacement amount calculation unit And a sex determination unit.

  The utility pole health judgment device according to the invention of claim 2 is a GPS installed at the top of the utility pole to obtain position data based on the data from the satellite, and the time interval at which the position data based on the data from a different satellite can be obtained. A position data collecting unit that collects position data from GPS, a position data storage unit that stores position data collected by the position data collecting unit, and the GPS among the position data collected by the position data collecting unit is installed. An initial position data calculating unit that calculates initial position data by averaging position data of normal values obtained for a certain period obtained by reading position data of a certain period initially collected and removing abnormal values; and the position data Normal position data for a certain period obtained by reading the latest position data for a certain period from the position data collected by the collector and removing abnormal values. A current position data calculation unit that calculates current position data by performing leveling, a displacement amount calculation unit that calculates a displacement amount between the current position data and the initial position data, and the displacement amount calculation unit that is calculated by the displacement amount calculation unit And a soundness determination unit that determines the soundness of the utility pole based on the displacement amount.

  According to a third aspect of the present invention, the utility pole soundness determination device according to the first aspect of the invention is characterized in that the position data storage unit is installed at the top of the utility pole, and the displacement amount calculation unit and the soundness determination unit are installed at the base station. It is characterized by that.

  According to a fourth aspect of the present invention, there is provided a utility pole soundness determination device according to the second aspect of the invention, wherein the position data storage unit is installed at the top of the utility pole, and the initial position data calculation unit, the current position data calculation unit, and the displacement amount. The calculation unit and the soundness determination unit are installed in a base station.

  According to a fifth aspect of the present invention, there is provided a utility pole soundness determination apparatus according to the third or fourth aspect, wherein a communication unit is installed at the top of the utility pole and the base station, and the communication unit is stored in the position data storage unit. The stored position data is transmitted to the base station.

  According to the first aspect of the present invention, since the position data of the power pole is acquired by the high-precision GPS installed on the upper part of the power pole, the position data of the power pole can be acquired regardless of the installation location of the power pole regardless of the hand. And since the displacement amount of a utility pole is calculated using the acquired position data of a utility pole, the soundness of a utility pole can be determined.

  According to the invention of claim 2, since the position data of the utility pole is acquired by the GPS installed on the upper part of the utility pole, the position data of the utility pole can be acquired regardless of the installation location of the utility pole at a low cost regardless of human hands. In addition, it collects position data from GPS at time intervals that can acquire position data based on data from different satellites, reads the collected position data for a certain period, removes abnormal values, and obtains a normal value for a certain period. Since the initial position data and the current position data are obtained by averaging the position data, the accuracy of the initial position data and the current position data is improved. And since the displacement amount of a utility pole is calculated | required from the obtained initial position data or present position data, and the soundness of a utility pole is determined based on a displacement amount, determination accuracy improves.

  According to invention of Claim 3 and Claim 4, since a position data storage part is installed in a utility pole top part, it can hold | maintain the position data of the utility pole acquired by high precision GPS or GPS, and the long-term displacement amount of a utility pole can be hold | maintained. Since it can be obtained, the soundness of the utility pole can be determined.

  According to the invention of claim 5, since the top of the power pole and the base station have the communication section, the base station can easily acquire the position data from the position data storage section installed at the top of the power pole, and can also be acquired in real time. It becomes.

The lineblock diagram of the electric pole soundness judgment device concerning a 1st embodiment of the present invention. It is explanatory drawing of the position change of the utility pole top accompanying bending of the utility pole used when determining the soundness of a utility pole in 1st Embodiment of this invention. The flowchart which shows the calculation processing content in the calculating part of the personal computer in the base station of the utility pole soundness determination apparatus which concerns on 1st Embodiment of this invention. The top view which shows an example of the display of the data memorize | stored in the memory | storage device of the personal computer in the base station of the utility pole soundness determination apparatus which concerns on 1st Embodiment of this invention. The lineblock diagram of the electric pole soundness judgment device concerning a 2nd embodiment of the present invention. The flowchart which shows the processing content which takes out the initial position data in the utility pole soundness determination apparatus which concerns on 2nd Embodiment of this invention. The data distribution figure which shows an example of the position data of the fixed period read with the utility pole soundness determination apparatus which concerns on 2nd Embodiment of this invention. The flowchart which shows the processing content from the calculation of the present position data to the determination of soundness in the utility pole soundness determination apparatus which concerns on 2nd Embodiment of this invention. Explanatory drawing of a utility pole deform | transforming with the tensile force of an electric wire.

  Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of a utility pole soundness determination device according to the first embodiment of the present invention. FIG. 1A is an overall configuration diagram when the power pole soundness determination device is applied to a power pole, FIG. Is a configuration diagram of a field station installed at the top of a utility pole, and FIG. 1C is a configuration diagram of a utility pole soundness judgment device in a base station.

  In FIG. 1A, a field station 14 is installed at the top of the utility pole 11, and a personal computer (hereinafter referred to as a personal computer) 16 is installed at the base station 15. A high-accuracy GPS is installed in the field station 14, and the high-accuracy GPS receives data from a plurality of satellites 17. The high-accuracy GPS usually acquires position data with data from four or more satellites 17 out of a plurality of satellites 17. Four or more satellites are not fixed but change according to the rotation of the earth and the orbit of the satellite. RTK-GPS (Real Time Kinematic GPS) or DGPS (Differential GPS) is used as the high-accuracy GPS.

  FIG. 1B is a configuration diagram of the utility pole soundness judgment device in the field station 14 installed at the top of the utility pole. As shown in FIG. 1B, the field station 14 includes a high-precision GPS 18 and a high-precision GPS 18. A memory 19 for storing the obtained position data and a communication unit 20 for communicating with the base station 15 are provided. The high-accuracy GPS 18 usually acquires position data at a cycle of 1 second and stores it in the position data storage unit 21 of the memory 19 in time series.

  FIG. 1C is a configuration diagram of a utility pole soundness determination device in the base station 15, and is configured by a personal computer 16. That is, it comprises an operation unit 22, a display unit 23, a storage device 24, a calculation unit 25, a memory 26, and a communication unit 27. The operation unit 22 is, for example, a keyboard or a mouse, and inputs an operation command to the calculation unit 25. The display unit 23 is, for example, a liquid crystal display device, and displays the calculation result of the calculation unit 25 and the content stored in the storage device 24. The memory 26 temporarily stores data used for calculation in the calculation unit 25.

  The communication unit 27 communicates with the communication unit 20 of the field station 14, receives the position data stored in the memory 19 of the field station 14 transmitted from the communication unit 20, and stores in the storage device 24 of the personal computer 16 in the base station 15. The time data is stored in the position data storage unit 28 in time series.

  In this case, the data transmission timing may be automatically transmitted at regular intervals, or may be transmitted in response to a request from the base station 15. The position data is transmitted to the base station 15 so that the storage capacity of the memory 19 of the field station 14 is not insufficient. Further, as a communication function of the communication unit 20 or the communication unit 27, for example, wireless such as an Internet line such as WiFi or a mobile phone line is used.

  Next, the calculation unit 25 includes a position data extraction unit 29, a displacement amount calculation unit 30, and a soundness determination unit 31. The position data extraction unit 29 extracts the position data acquired at the beginning of the installation of the high-accuracy GPS 18 from the position data acquired by the high-accuracy GPS 18 as initial position data and stores it in the initial position data storage unit 32. Further, among the position data acquired by the high-accuracy GPS 18, the latest acquired position data is taken out as current position data and stored in the current position data storage unit 33.

  The position data extracted by the position data extracting unit 29 is the position of the storage device 24 of the base station 15 from the position data storage unit 21 of the site station 14 through communication between the communication unit 20 of the site station 14 and the communication unit 27 of the base station 15. This is the position data transmitted to the data storage unit 28. Accordingly, the position data extracted by the position data extracting unit 29 at the timing of communication between the communication unit 20 of the field station 14 and the communication unit 27 of the base station 15 is strictly stored in the position data storage unit 21 of the field station 14. The latest position data may not match. This is due to the timing of the position data acquired by the high-accuracy GPS 18 in a 1-second cycle and the transmission delay between the communication unit 20 of the field station 14 and the communication unit 27 of the base station 15, and in the first embodiment, There is no problem because there is no displacement in a few seconds unless a specific event such as a natural disaster occurs. Therefore, in the following description, the latest position data transmitted from the field station 14 is referred to as the latest position data acquired by the high-precision GPS 18.

  Next, the displacement amount calculation unit 30 reads the initial position data stored in the initial position data storage unit 32, reads the current position data that is the latest position data stored in the current position data storage unit 33, and reads the current position data. The displacement amount between the data and the initial position data is calculated and stored in the displacement amount storage unit 34 of the storage device 24. The soundness determination unit 31 determines the soundness of the utility pole based on the displacement amount calculated by the displacement amount calculation unit 30 and stores the determination result in the determination result storage unit 35 of the storage device 24.

  As described above, in the first embodiment of the present invention, the crack 13 of the utility pole 11 is generated by the bending of the utility pole 11, and therefore there is a correlation between the degree of the crack 13 and the displacement amount of the top of the utility pole. Focusing on this, the amount of displacement at the top of the utility pole is measured to determine the degree of crack 13, that is, the soundness of the utility pole.

  FIG. 2 is an explanatory diagram of a change in the position of the top of the utility pole as the utility pole bends when determining the soundness of the utility pole in the first embodiment of the present invention. As described above, the utility pole 11 is pulled by the electric wire 12 and receives a bending moment, so that it gradually bends in the direction of the electric wire 12 over a long period of time. In the process in which the utility pole 11 is deformed, the back side of the utility pole 11 is extended, and a crack 13 is generated in the utility pole 11. Therefore, in the first embodiment of the present invention, the displacement of the electric pole top is measured to determine the soundness of the electric pole. When the displacement amount of the utility pole top is large, it is determined that the degree of the crack 13 is also large.

  FIG. 3 is a flowchart showing the contents of the calculation process in the calculation unit of the personal computer in the base station of the utility pole soundness determination apparatus according to the first embodiment of the present invention. FIG. FIG. 3B is a flowchart showing the contents of processing for extracting data, and FIG. 3B is a flowchart showing the contents of displacement amount calculation processing and utility pole soundness determination processing in the calculation unit 25.

  In FIG. 3A, the position data extraction unit 29 extracts position data acquired at the beginning of installation of the high-accuracy GPS 18 from the position data (S1). Then, the extracted position data is stored as initial position data (S2). The position data stored in the position data storage unit 28 of the storage device 24 is time-series position data acquired by the high-accuracy GPS 18, and the position data acquired initially when the high-accuracy GPS 18 is installed is Since it is the data of the top of the initial utility pole 11 where the utility pole 11 is installed, it is taken out as initial position data and stored in the initial position data storage section 32 of the storage device 24.

  In FIG. 3B, first, the position data extraction unit 29 extracts and stores the latest position data among the position data as current position data (S11). This is because the position data stored in the position data storage unit 28 of the storage device 24 is time-series position data acquired by the high-accuracy GPS 18, and the latest position data is the current position data. The extracted current position data is stored in the current position data storage unit 33 of the storage device 24.

  Next, the displacement amount calculation unit 30 reads the initial position data and the current position data (S12). That is, the initial position data is read from the initial position data storage unit 32 of the storage device 24 and the current position data is read from the current position data storage unit 33.

  Then, the displacement amount calculation unit 30 calculates the displacement amount between the current position data and the initial position data (S13). The displacement amount calculation unit 30 calculates the displacement amount z of the electric pole top by the following equation (1). xt and yt are position coordinates at the time of measurement of the utility pole top, and x0 and y0 are initial position coordinates of the utility pole top.

  And the soundness determination part 31 determines whether the displacement amount is smaller than the predetermined threshold value (S14). When the displacement amount is smaller than the threshold value, the displacement amount and the determination result are stored (S15). The displacement amount is stored in the displacement amount storage unit 34 of the storage device 24, and the determination result is stored in the determination result storage unit 35. On the other hand, if it is determined in step S14 that the displacement amount is greater than the threshold value, a warning message is output (S16). This warning message is output on the display unit 23, for example. Then, the displacement amount and the determination result are stored (S15).

  Here, a plurality of threshold values may be provided as threshold values. For example, when two threshold values of the first threshold value and the second threshold value (first threshold value <second threshold value) are provided, if the displacement amount is larger than the first threshold value, for example, “within one year” If the amount of displacement is greater than the second threshold value, “Need to rebuild” is output as an alert message.

  FIG. 4 is a plan view showing an example of display of data stored in the storage device of the personal computer in the base station of the utility pole soundness determination device according to the first embodiment of the present invention. FIG. 4 shows an example of display of data stored in the initial position data storage unit 32, the current position data storage unit 33, the displacement amount storage unit 34, and the determination result storage unit 35 of the storage device 24. That is, an example is shown in which initial position data, current position data, displacement, and determination results are collectively displayed for each utility pole number.

  The initial position data and the current position data are indicated by measurement date, latitude, and longitude. The displacement amount is indicated by the number of days elapsed from the measurement date of the initial position data to the measurement date of the current position data, and the displacement amount. The determination result shows a case where two threshold values (first threshold value <second threshold value) are provided. When the displacement amount is equal to or less than the first threshold value, “◯”, and the displacement amount exceeds the first threshold value and equal to or less than the second threshold value. In this case, Δ is indicated, and when the displacement amount exceeds the second threshold value, × is indicated.

  Here, the initial position data stored in the initial position data storage unit 32 of the storage device 24 is usually a single piece of data. This is because the initial position data is position data of the top of the utility pole 11 when the utility pole 11 is built.

  The current position data stored in the current position data storage unit 33 is a plurality of data because it is obtained at the current position data calculation cycle. The calculation period of the current position data may be a position data acquisition period (for example, 1 second) or a longer period. By setting the position data acquisition cycle (for example, 1 second), it is possible to evaluate the amount of short-time displacement of the top of the utility pole 11 when a natural disaster (earthquake, tsunami, volcanic eruption, etc.) occurs. Even if it is longer than the position data acquisition cycle (for example, 1 second), there is no problem because the amount of displacement of the top of the utility pole 11 proceeds slowly over a long period of time.

  The displacement amount and the determination result stored in the displacement amount storage unit 34 and the determination result storage unit 35 are a plurality of data because they are obtained in a cycle in which the displacement amount is calculated and the soundness is evaluated. Normally, the amount of displacement is calculated and the soundness is determined at the current position data calculation cycle, so the number is the same as the current position data.

  In the above description, the communication unit 20 is provided in the field station 14, the communication unit 27 is provided in the base station 15, and the position data stored in the position data storage unit 21 of the memory 19 of the field station 14 is the communication unit 20 and the communication unit. 27 is transmitted to the personal computer 16 of the base station 15, but may be transmitted by being connected to the base station 15 by wire. Alternatively, the memory 19 of the field station 14 may be manually replaced without using the communication function, and the memory 19 may be directly inserted into the personal computer 16 of the base station 15 to store the position data.

  According to 1st Embodiment of this invention, since the position data of the utility pole 11 are acquired by the high precision GPS 18 installed in the upper part of the utility pole, the position data of the utility pole 11 can be acquired regardless of the hand. Further, since the high-accuracy GPS 18 acquires the position data of the utility pole 11 from the data from the satellites in the sky, the position data of the utility pole 11 can be obtained regardless of the installation location of the utility pole 11. Since the displacement amount of the utility pole 11 is calculated using the position data of the utility pole 11 acquired from the high-accuracy GPS 18, the displacement amount of the utility pole 11 is also highly accurate, and the soundness of the utility pole 11 can be determined with high accuracy. Furthermore, because a warning message is output, a plan for rebuilding the utility pole can be made smoothly. In addition, by making the displacement evaluation judgment period the same as the position data acquisition period, it is possible to evaluate the short-time displacement amount of the top of the utility pole 11 when a natural disaster (earthquake, tsunami, volcanic eruption, etc.) occurs.

  Next, a second embodiment of the present invention will be described. FIG. 5 is a configuration diagram of a utility pole soundness determination device according to the second embodiment of the present invention. FIG. 5A is a configuration diagram of a field station installed at the top of the utility pole, and FIG. 5B is a base station. It is a block diagram of the utility pole soundness determination apparatus in FIG. This second embodiment is a normal GPS instead of a high-accuracy GPS with respect to the first embodiment shown in FIG. 1, and the GPS is a time interval at which position data based on data from different satellites can be acquired. GPS position data is acquired. The same elements as those in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 5A is a configuration diagram of a field station of the utility pole soundness determination device according to the second embodiment of the present invention, and the GPS 36 has a position data collection unit 37. Normally, the GPS 36 acquires position data with a period of 1 [s] by the position data collection unit 37, but in the second embodiment of the present invention, the position data collection unit 37 acquires position data based on data from different satellites. Position data is acquired at a possible time interval (cycle). For example, position data is acquired every 60 minutes. This is to collect highly accurate position data as the position data of the GPS 36. Position data based on data from different satellites acquired by the position data collection unit 37 of the GPS 36 is stored in the position data storage unit 21 of the memory 19 of the field station 14.

  Here, the satellite 17 orbits the earth above the altitude of about 20,000 km in a circular orbit over about 12 hours, and there are currently 28 satellites. For this reason, if the reception interval is too short, the types of the satellites 17 to be used are the same, and the position of the satellites 17 does not change so much, so that data holding the same positioning error may be collected. Therefore, in the second embodiment, position data is acquired at a time interval (period) where position data based on data from different satellites can be acquired. Thereby, accurate position data can be collected. Note that the low elevation angle satellite 17 is susceptible to multipaths on the ground and buildings, and therefore uses a satellite 17 that maintains a certain elevation angle, such as not using an elevation angle of 15 degrees or less.

  FIG.5 (b) is a block diagram of the base station of the utility pole soundness determination apparatus which concerns on 2nd Embodiment of this invention, and position data extraction part 29 with respect to 1st Embodiment shown in FIG.1 (c). Instead, an initial position data calculation unit 38 and a current position data calculation unit 39 are provided. The same elements as those in FIG. 1C are denoted by the same reference numerals, and redundant description is omitted.

  In FIG. 5B, the communication unit 27 communicates with the communication unit 20 of the field station 14, receives the position data stored in the memory 19 of the field station 14 transmitted from the communication unit 20, and in the base station 15. The data is stored in the position data storage unit 28 of the storage device 24 of the personal computer 16 in time series.

  In this case, as in the first embodiment, the data transmission timing may be automatically transmitted at regular intervals, may be transmitted in response to a request from the base station 15, or the memory of the field station 14 19 may be manually replaced, and the memory 19 may be directly inserted into the personal computer 16 of the base station 15 to store the position data.

  Next, the calculation unit 25 includes an initial position data calculation unit 38, a current position data calculation unit 39, a displacement amount calculation unit 30, and a soundness determination unit 31. The initial position data calculation unit 38 is the position data collected by the position data collection unit 37 of the GPS 36, that is, the position data collected at the beginning of the installation of the GPS 36 among the position data stored in the position data storage unit 28. The initial position data is calculated by reading the data and averaging the position data of the normal values for a certain period obtained by removing the abnormal values. The initial position data calculated by the initial position data calculation unit 38 is stored in the initial position data storage unit 32.

  The current position data calculation unit 39 reads the latest position data of a certain period from the position data collected by the position data collection unit 37 of the GPS 36, and removes abnormal values as in the case of the initial position data calculation unit 38. The current position data is calculated by averaging the position data of normal values obtained for a certain period. The current position data calculated by the current position data calculation unit 39 is stored in the current position data storage unit 33.

  Here, the initial position data calculating unit 38 and the current position data calculating unit 39 calculate the initial position data by averaging the position data of normal values for a certain period in order to obtain accurate position data. is there. Further, the certain period is a unit such as one week or one month. This is because the amount of displacement of the top of the utility pole 11 proceeds slowly over a long period of time, so that the position of the top of the utility pole 11 may be considered to be the same value within a certain period of time.

  The displacement amount calculation unit 30 reads the initial position data stored in the initial position data storage unit 32, reads the current position data that is the latest position data stored in the current position data storage unit 33, and sets the current position data and the initial position data as initial values. A displacement amount with respect to the position data is calculated and stored in the displacement amount storage unit 34 of the storage device 24. The soundness determination unit 31 determines the soundness of the utility pole based on the displacement amount calculated by the displacement amount calculation unit 30 and stores the determination result in the determination result storage unit 35 of the storage device 24.

  Next, how the initial position data calculation unit 38 calculates initial position data will be described. FIG. 6 is a flowchart showing the processing contents for calculating initial position data in the utility pole soundness determination device according to the second embodiment of the present invention. For the new utility pole 11 that has just been built, the GPS 36 position data collection unit 37 starts collecting the position data of the GPS 36.

  First, the position data collection unit 37 of the GPS 36 takes out position data at position data time intervals based on data from different satellites and collects them as position data (T1). As described above, the position data collection unit 37 normally acquires position data at a cycle of 1 [s]. However, in the second embodiment of the present invention, the position data collection unit 37 is based on data from different satellites. The position data is acquired every time interval (cycle) at which the position data can be acquired, for example, every 60 minutes. This is to suppress the occurrence of errors due to satellite bias by acquiring data from different satellite groups as GPS 36 position data.

  Then, the acquired position data is stored in the position data storage unit 21 of the memory 19 of the field station 14 (T2). The position data stored in the position data storage unit 21 of the memory 19 of the field station 14 is transmitted to the base station 15 and stored in the position data storage unit 28 of the storage device 24 of the base station 15.

  Next, the initial position data calculation unit 38 of the base station 15 reads position data for a certain period acquired at the beginning when the GPS 36 is installed (T3). That is, the initial position data calculation unit 38 reads position data for a certain period of time acquired initially when the GPS 36 is installed among the position data stored in the position data storage unit 28 of the storage device 24 (T3). The reason why the position data acquired at the beginning of the installation of the GPS 36 is read is because the position data acquired at the beginning of the installation of the GPS 36 is the top data of the initial utility pole 11 at which the utility pole 11 is installed. Further, the position data for a certain period is read in order to suppress the occurrence of errors due to the deviation of the satellites by acquiring data from different satellite groups. As described above, the certain period is, for example, one week. A unit such as one month.

  The initial position data calculation unit 38 removes abnormal values from the read position data (T4). The abnormal value is removed in order to obtain highly accurate position data. Since the position data acquired by the GPS 36 includes error factors such as reflection delay due to water vapor in the ionosphere, multipath, and clock error before receiving data from the satellite 17, an error of about 5 to 10 m is usually required. Is included. Therefore, when the latitude / longitude of the position data for a certain period is plotted on the XY coordinates, the position data for the certain period has a data distribution as shown in FIG. The removal of the abnormal value of the position data is performed, for example, by examining the variation in the data in the X-axis direction and removing the above data of 2σ (σ: standard deviation). Similarly, abnormal values are also removed in the Y-axis direction.

  The initial position data calculation unit 38 calculates the initial position data by averaging the normal position data for a certain period from which abnormal values have been removed (T5). The averaged initial position data is very close to the data of the origin of the XY axes in the graph of FIG. 7 when the data distribution is close to the normal distribution.

  Then, the calculated initial position data is stored (T6). The calculated initial position data is stored in the initial position data storage unit 32 of the storage device 24. For example, as shown in the column of initial position data shown in FIG. 4, the measurement date, latitude, and longitude are stored for each utility pole number. Since the initial position data is data when the utility pole 11 is built, it is usually one data.

  Next, how to calculate the current position data, the displacement amount, and the soundness determination will be described. FIG. 8 is a flowchart showing processing contents from calculation of current position data to determination of soundness in the utility pole soundness determination device according to the second embodiment of the present invention. The position data collection unit 37 of the GPS 36 starts collecting the position data of the GPS 36 for the utility pole 11 whose time has passed since the building pillar.

  First, the current position data calculation means 39 reads the latest position data for a certain period (T11), and removes the abnormal value from the read position data for the latest certain period (T12). Then, the current position data is calculated by averaging the position data of the normal value for a certain period from which the abnormal value is removed (T13), and the calculated current position data is stored (T14). The initial position data calculation process from steps T11 to T14 is the same as the algorithm for determining the initial position data.

  That is, the current position data calculation means 39 reads the latest position data of a certain period from the position data stored in the position data storage unit 28 of the storage device 24, removes the abnormal value, and removes the abnormal value. Normal position data is averaged to calculate current position data, and the calculated current position data is stored in the current position data storage unit 33.

  The current position data is a plurality of data because it is obtained at the calculation cycle of the current position data. The calculation period of the current position data may be a fixed period (for example, one week or one month) for obtaining the position data for the averaging process described above, or may be a longer period. Even if it is longer than the position data acquisition cycle (for example, one week or one month), there is no problem because the amount of displacement of the top of the utility pole 11 proceeds slowly over a long time.

  Next, the displacement amount calculation unit 30 calculates the displacement amount between the current position data and the initial position data (T15). The displacement amount calculation unit 30 reads the current position data from the current position data storage unit 33, reads the initial position data from the initial position data storage unit 32, and calculates the displacement amount z of the utility pole top by the above-described equation (1).

  And the soundness determination part 31 determines whether the displacement amount is smaller than the predetermined threshold value (T16). When the displacement amount is smaller than the threshold value, the displacement amount and the determination result are stored (T17). The displacement amount is stored in the displacement amount storage unit 34 of the storage device 24, and the determination result is stored in the determination result storage unit 35. On the other hand, if it is determined in step T16 that the displacement amount is greater than the threshold value, a warning message is output (T18). This warning message is output on the display unit 23, for example. Then, the displacement amount and the determination result are stored (T17).

  The displacement amount and the determination result stored in the displacement amount storage unit 34 and the determination result storage unit 35 are a plurality of data because they are obtained in a cycle in which the displacement amount is calculated and the soundness is evaluated. Normally, the amount of displacement is calculated and the soundness is determined at the current position data calculation cycle, so the number is the same as the current position data.

  According to the second embodiment of the present invention, the GPS 36 is attached to the top of the power pole, the position data is collected from the GPS 36 at a time interval at which position data based on data from different satellites can be acquired, and the obtained position data is averaged. Therefore, it is possible to accurately grasp the initial position data and the current position data. And since displacement amount z is calculated by calculating | requiring the difference of the initial position data of the utility pole 11, and current position data, the displacement amount z of the utility pole top part with sufficient accuracy can be obtained, and the determination precision of the soundness of the utility pole 11 is obtained. Can be improved. In addition, the soundness of the utility pole 11 can be determined regardless of where the utility pole is installed, regardless of the manpower.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 11 ... Electric pole, 12 ... Electric wire, 13 ... Crack, 14 ... Field station, 15 ... Base station, 16 ... Personal computer, 17 ... Satellite, 18 ... High precision GPS, 19 ... Memory, 20 ... Communication part, 21 ... Location data storage , 22, operation unit, 23, display unit, 24, storage device, 25, calculation unit, 26, memory, 27, communication unit, 28, position data storage unit, 29, position data extraction unit, 30, displacement amount calculation. 31: Soundness determination unit, 32 ... Initial position data storage unit, 33 ... Current position data storage unit, 34 ... Displacement amount storage unit, 35 ... Determination result storage unit, 36 ... GPS, 37 ... Position data collection unit, 38 ... initial position data calculation unit, 39 ... current position data calculation unit

Claims (5)

High-accuracy GPS that is installed at the top of the utility pole and acquires position data based on data from satellites;
A position data storage unit for storing position data acquired by the high-accuracy GPS;
A position data extracting unit that extracts position data acquired at the beginning of the installation of the high-accuracy GPS from the position data acquired by the high-accuracy GPS as initial position data, and extracts the latest acquired position data as current position data; ,
A displacement amount calculating unit for calculating a displacement amount between the current position data and the initial position data;
A utility pole soundness determination device, comprising: a soundness determination unit that determines soundness of a power pole based on the displacement amount calculated by the displacement amount calculation unit. GPS that is installed at the top of the utility pole and acquires position data based on data from satellites;
A position data collection unit that collects position data from the GPS at a time interval at which position data based on data from different satellites can be acquired;
A position data storage unit for storing the position data collected by the position data collection unit;
The position data collected by the position data collecting unit is read from the position data collected for a certain period at the beginning when the GPS is installed, and the normal value position data obtained by removing abnormal values is averaged. An initial position data calculating unit for calculating initial position data,
The current position data is calculated by averaging the position data of the normal value for a certain period obtained by reading the position data of the latest certain period from the position data collected by the position data collecting unit and removing the abnormal value. A current position data calculation unit;
A displacement amount calculating unit for calculating a displacement amount between the current position data and the initial position data;
A utility pole soundness determination device, comprising: a soundness determination unit that determines soundness of a power pole based on the displacement amount calculated by the displacement amount calculation unit.   2. The utility pole soundness determination apparatus according to claim 1, wherein the position data storage unit is installed at the top of a utility pole, and the displacement amount calculation unit and the soundness determination unit are installed at a base station.   The position data storage unit is installed at the top of the utility pole, and the initial position data calculation unit, the current position data calculation unit, the displacement amount calculation unit, and the soundness determination unit are installed in a base station. The utility pole soundness determination apparatus of Claim 2.   The communication unit is installed in the power pole top and the base station, and the communication unit transmits the position data stored in the position data storage unit to the base station. Electric pole health judgment device.

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