Pillar structure monitoring system

Abstract

To properly acquire the state of a columnar structure.SOLUTION: A columnar structure monitoring system 101 includes a plurality of slave stations 3 each of which a position acquisition unit 4 attached to a columnar structure 1 and outputting position information D4, a tilt sensor 5 attached to the columnar structure 1 and outputting tilt information D5, and an information transmitting unit 7 transmitting the position information D4 and the tilt information D5, and a determining unit 10 that receives the position information D4 and the tilt information D5 from the plurality of slave stations 3 and determines the state of damage of the plurality of columnar structures 1.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a columnar structure monitoring system. [Background technology]

[0002] As background art in this technical field, the abstract of Patent Document 1 listed below states, "[Problem] To provide a system for accurately measuring the acceleration acting on utility poles, efficiently collecting measurement data from a large number of utility poles scattered over a wide area, and early detection of tilt. [Solution] A sensor node installed on the top of a utility pole obtains acceleration values ​​a specified number of times from a built-in acceleration sensor capable of measuring in multiple directions, and calculates the acceleration acting on the utility pole by averaging the series of acceleration data for each measured direction. The sensor node transmits the calculated acceleration data via short-range wireless to a gateway installed near the utility pole. The gateway transmits the received acceleration data via long-range wireless to a server. The server accumulates the received acceleration data in a database and determines whether the maximum value of the tilt angle calculated from the received acceleration data exceeds a threshold value set in advance for each utility pole. If the tilt angle exceeds the threshold, the server determines that the utility pole in question is in an abnormal state, and notifies the pre-registered address of the administrator." [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-4387 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned technology, there is a demand for more appropriate acquisition of the state of damage to pole-like structures such as utility poles. The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a columnar structure monitoring system that can appropriately acquire the state of a columnar structure. [Means for solving the problem]

[0005] In order to solve the above problems, the columnar structure monitoring system of the present invention comprises a plurality of slave stations, each of which includes a position acquisition unit attached to a columnar structure and outputting position information, an inclination sensor attached to the columnar structure and outputting inclination information, and an information transmission unit that transmits the position information and the inclination information, and a determination unit that receives the position information and the inclination information from the plurality of slave stations and determines the damage state of the plurality of columnar structures. The determination unit further has a function of determining the influence of the damage state of the columnar structure on the road based on the contents of a database storing road information, which is information about the road near the columnar structure, the position information, and the inclination information. It is characterized by: [Effects of the Invention]

[0006] According to the present invention, the state of a columnar structure can be appropriately acquired. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic diagram showing the configuration of a portion around a utility pole in a utility pole monitoring system according to a first embodiment. [Figure 2] 1 is a block diagram of a utility pole monitoring system according to a first embodiment. [Figure 3] FIG. 1 is a block diagram of a computer. [Figure 4] FIG. 2 is a schematic plan view showing an example of the layout relationship between roads and utility poles. [Figure 5] FIG. 10 is a schematic plan view showing another example of the layout relationship between roads and utility poles. [Figure 6] FIG. 1 is a diagram showing an example of damage to a utility pole. [Figure 7] 10A and 10B are diagrams showing other examples of damage to utility poles. [Figure 8] FIG. 10 is a schematic plan view showing another example of the layout relationship between roads and utility poles. [Figure 9] FIG. 10 is a schematic diagram showing the configuration of the vicinity of a utility pole in the utility pole monitoring system according to the second embodiment. [Figure 10] FIG. 10 is a block diagram of a utility pole monitoring system according to a second embodiment. [Figure 11]FIG. 10 is a block diagram of a utility pole monitoring system according to a third embodiment. [Figure 12] FIG. 10 is a block diagram of a utility pole monitoring system according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] [Outline of the embodiment] By applying the technology of Patent Document 1, it is believed possible to detect the tilt of utility poles early by measuring the acceleration occurring on the utility poles and collecting measurement data from numerous utility poles scattered over a wide area. However, the above-mentioned technology has a problem in that it is not possible to determine the direction of tilt of the utility poles. Therefore, in the embodiment described below, it is possible to determine the direction of tilt of the utility poles. For example, a slave station equipped with a GPS receiver and a tilt sensor is installed on the utility pole or steel tower. In addition, a master station that communicates with the slave station is installed at a base station. Then, at the base station, the information received from the slave station is compared with pre-stored latitude and longitude information of the road, thereby determining the impact on the road. As a result, in the embodiment described below, it is possible to determine the impact on the road of damage to utility poles, etc.

[0009] [First embodiment] <Configuration of the first embodiment> FIG. 1 is a schematic diagram showing the configuration of the area around a utility pole in a utility pole monitoring system 101 (pillar structure monitoring system) according to the first embodiment. In FIG. 1, a distribution line 2 is installed between utility poles 1a and 1b (pillar-shaped structures). Substations 3a and 3b are attached to utility poles 1a and 1b, respectively. In the following description, when there are multiple components with the same or similar functions, they may be referred to by the same number with different alphabetical letters, such as "utility poles 1a and 1b." However, when it is not necessary to distinguish between these multiple components, the alphabetical letters may be omitted, such as "utility pole 1."

[0010] FIG. 2 is a block diagram of the utility pole monitoring system 101 according to the first embodiment. The utility pole monitoring system 101 includes a master station 8 and multiple slave stations 3 installed on a utility pole 1 (see FIG. 1 ). However, only one slave station 3 is shown in the figure. The master station 8 is installed in a power distribution control center, a power distribution substation, or the like. The slave station 3 includes a position acquisition unit 4, a tilt sensor 5, a battery 6, and an information transmission unit 7. The position acquisition unit 4 acquires latitude and longitude information D4 (position information) of the slave station 3. The position acquisition unit 4 can be a receiver that receives satellite radio waves from a GPS (Global Positioning System) or the like to acquire position, time, date, and the like. The tilt sensor 5 acquires tilt information D5 of the utility pole 1 to which the slave station 3 is attached. The information transmission unit 7 transmits the latitude and longitude information D4 and tilt information D5 to the master station 8. The slave station 3 includes a battery 6, allowing it to acquire and transmit various information to the master station 8 even during a power outage.

[0011] The master station 8 includes a database 9, a determination unit 10, and a restoration planning unit 11. The database 9 stores utility pole information D11 and road information D12. The utility pole information D11 includes latitude and longitude information of the slave stations 3 attached to each utility pole 1 and the height H of the slave stations 3 from the ground (see FIG. 6). The road information D12 is information about roads 12 (see FIG. 5) in the vicinity of the utility poles 1. Specifically, the road information D12 includes connection information of points (nodes) that divide the center line 13 of the road 12 into intervals of several meters to several tens of meters, latitude and longitude information of each node, and the width W of the road 12 at each node (see FIG. 6).

[0012] The determination unit 10 determines the state of damage to each utility pole 1 based on the contents stored in the database 9 and the latitude and longitude information D4 and tilt information D5 received from the slave station 3. For example, the determination unit 10 determines whether the utility pole 1 is interfering with a road 12 (see FIG. 5 ) by comparing the latitude and longitude information D4 of the slave station 3 with the contents of the database 9. The determination unit 10 transmits the determination result to the restoration planning unit 11, which then formulates a restoration plan for the damaged utility pole 1. Therefore, damage information on the utility pole 1 can be collected without having to send a power distribution equipment inspection vehicle to the site, making it possible to rationally allocate restoration work resources.

[0013] 3 is a block diagram of the computer 900. The master station 8 shown in FIG. 2 includes one or more computers 900 shown in FIG. 3, the computer 900 includes a CPU 901, a RAM 902, a ROM 903, a HDD 904, a communication I / F 905, an input / output I / F 906, and a media I / F 907. The communication I / F 905 is connected to a communication circuit 915 that communicates with the slave station 3. The input / output I / F 906 is connected to an input / output device 916. The media I / F 907 reads and writes data from a recording medium 917. The ROM 903 stores control programs executed by the CPU, various data, and the like. The CPU 901 executes application programs loaded into the RAM 902 to realize various functions. The interior of the master station 8 shown in FIG. 2 is shown as blocks representing functions realized by application programs, etc.

[0014] FIG. 4 is a schematic plan view showing an example of the layout relationship between roads and utility poles. In FIG. 4, multiple utility poles 1a, 1b, 1c, and 1d are installed along a road 12, on the outside of the road. A power distribution line 2 is installed between each of these utility poles. Furthermore, each of the utility poles 1a, 1b, 1c, and 1d is equipped with a slave station 3a, 3b, 3c, and 3d, respectively. In the illustrated state, the distance between each of the slave stations 3a, 3b, 3c, and 3d and the center line 13 of the road 12 is greater than half the width of the road 12. Therefore, the determination unit 10 of the master station 8 (see FIG. 2) determines that "the utility poles 1 are not interfering with the road 12."

[0015] FIG. 5 is a schematic plan view showing another example of the layout relationship between roads and utility poles. In Fig. 5, utility pole 1b on which slave station 3b is mounted is damaged and tilted toward road 12. In this state, slave station 3b has moved to a position beyond center line 13 of road 12, and therefore determination unit 10 of master station 8 (see Fig. 2) determines that "utility pole 1b is interfering with road 12."

[0016] FIG. 6 is a diagram showing an example of a damaged utility pole, and FIG. 7 is a diagram showing another example of a damaged utility pole. 6 and 7, the utility pole 1 shown by a solid line indicates the state before the damage, and the utility pole 1 shown by a two-dot chain line indicates the state after the damage. In this embodiment, tilt information D5 can be acquired by the tilt sensor 5 provided in the slave station 3, so the tilt angle φ of the utility pole can be obtained. In addition, latitude and longitude information D4 of the slave station 3 can be acquired by the position acquisition unit 4. The height H of the slave station 3 from the ground is known.

[0017] This allows the determination unit 10 of the master station 8 to determine whether the utility pole 1 is tilted from the base as shown in Fig. 6, or whether it is broken partway along as shown in Fig. 7. In addition, in the state of Fig. 7, the determination unit 10 can also calculate the breakage height H1 (breakage position). This allows the determination unit 10 to determine whether various vehicles, such as a power distribution equipment inspection vehicle, are allowed to travel on the road 12, depending on whether the vehicle height of the vehicle is less than the breakage height H1.

[0018] FIG. 8 is a schematic plan view showing another example of the layout relationship between roads and utility poles. 8 is the same as that in Fig. 4, but utility pole 1b is tilted on the side opposite the road. In this embodiment, since the location acquisition unit 4 is provided in the slave station 3, the determination unit 10 of the master station 8 (see Fig. 2) can determine that the tilt direction of utility pole 1b is on the side opposite the road by detecting that the separation distance between the slave station 3 and the road 12 is larger than normal.

[0019] [Second embodiment] 9 is a schematic diagram showing the configuration of the area around a utility pole in a utility pole monitoring system 102 (columnar structure monitoring system) according to the second embodiment. In the following description, parts corresponding to those in the first embodiment described above are given the same reference numerals, and their description may be omitted. 9, the configurations of the utility poles 1a and 1b and the power distribution line 2 are the same as those in the first embodiment (see FIG. 1). However, in this embodiment, the slave stations 3a and 3b are provided with power receiving units 32a and 32b.

[0020] FIG. 10 is a block diagram of a utility pole monitoring system 102 according to the second embodiment. The configuration of the master station 8 in the second embodiment is the same as that in the first embodiment (see FIG. 2). The slave station 3 is also the same as that in the first embodiment, except that it includes a power receiving unit 32. Although not shown, the power receiving unit 32 includes a power acquisition unit that acquires power contactlessly from the conductors of the power distribution line 2 and a rectifier circuit that rectifies the acquired power. This allows the power receiving unit 32 to supply power to the battery 6 and charge it. The power acquisition unit may be a capacitively coupled voltage sensor or a split current transformer, or other contactless electrical or magnetic coupling means. According to this embodiment, the battery 6 in the slave station 3 can be charged while the power distribution line 2 is energized, thereby reducing the frequency of battery replacement.

[0021] [Third embodiment] 11 is a block diagram of a utility pole monitoring system 103 (columnar structure monitoring system) according to the third embodiment. In the following description, parts corresponding to those in the other embodiments described above are given the same reference numerals, and their description may be omitted. The configurations of the slave station 3 and master station 8 in the third embodiment are the same as those in the first embodiment (see FIG. 2). The configuration of the area around the utility pole is also the same as that in the first embodiment (see FIG. 1). However, a wireless transmitter 35 is connected to the information transmitter 7 of the slave station 3, and a wireless receiver 36 is connected to the master station 8. As a result, the slave station 3 transmits latitude and longitude information D4 and tilt information D5 via the wireless transmitter 35, and the master station 8 acquires this information via the wireless receiver 36. According to this embodiment, because information is transmitted wirelessly, it is possible to prevent a situation in which information transmission is interrupted due to a break in the information transmission line.

[0022] [Fourth embodiment] 12 is a block diagram of a utility pole monitoring system 104 (columnar structure monitoring system) according to the fourth embodiment. In the following description, parts corresponding to those in the other embodiments described above are given the same reference numerals, and their description may be omitted. The configurations of the slave station 3 and master station 8 in the fourth embodiment are the same as those in the first embodiment (see FIG. 2). The configuration of the area around the utility pole is also the same as that in the first embodiment (see FIG. 1). However, the position acquisition unit 4 of the slave station 3 acquires the current time from the GPS and supplies the acquired current time as time information D41 to the information transmission unit 7. The information transmission unit 7 transmits the time information D41 to the master station 8 together with the latitude and longitude information D4 and the tilt information D5.

[0023] According to this embodiment, the determination unit 10 of the master station 8 receives the time information D41, and therefore can grasp the damage status of the utility pole 1 and the temporal changes in the impact of the damage on roads. In cases where utility poles are damaged due to disasters such as typhoons, the number of utility pole damages begins to increase as the typhoon approaches, and the number of utility pole damages saturates as the typhoon passes. Therefore, by providing the time information D41 to the restoration planning unit 11, it becomes possible to rationally allocate restoration resources.

[0024] [Effects of the embodiment] As described above, according to the embodiment, the columnar structure monitoring system (101-104) comprises a plurality of slave stations 3, each of which includes a position acquisition unit 4 attached to the columnar structure (1) and outputting position information (D4), an inclination sensor 5 attached to the columnar structure (1) and outputting inclination information D5, and an information transmission unit 7 transmitting the position information (D4) and the inclination information D5, and a determination unit 10 that receives the position information (D4) and the inclination information D5 from the plurality of slave stations 3 and determines the damage state of the plurality of columnar structures (1). As a result, the determination unit 10 can appropriately acquire the state of the columnar structure (1) based on the position information (D4) and the inclination information D5.

[0025] Furthermore, since the columnar structure (1) is installed along the road 12, it is even more preferable that the judgment unit 10 further has a function of judging the impact of the damage state of the columnar structure (1) on the road 12. This makes it possible to appropriately formulate a restoration plan for the columnar structure (1).

[0026] It is more preferable that the determination unit 10 further comprises a function of estimating the breakage position (H1) of the columnar structure (1) based on the position information (D4) and the inclination information D5, thereby making it possible to determine whether a vehicle can pass through the location of the columnar structure (1) depending on the vehicle height.

[0027] 10, each of the multiple slave stations 3 preferably further comprises a battery 6 that supplies power to the position acquisition unit 4, the tilt sensor 5, and the information transmission unit 7, and a power receiving unit 32 that includes a power acquisition unit that acquires power contactlessly from the conductor of the distribution line 2 and charges the battery 6. This allows the battery 6 to be charged while the distribution line 2 is energized, thereby reducing the frequency of battery 6 replacement.

[0028] Furthermore, as in the columnar structure monitoring system (103) of the third embodiment shown in Fig. 11, it is even more preferable to further include a plurality of wireless transmitting units 35 provided corresponding to a plurality of slave stations 3, which wirelessly transmit the position information (D4) and tilt information D5 output from the information transmitting unit 7, and a wireless receiving unit 36 ​​which wirelessly receives the position information (D4) and tilt information D5 and supplies them to the determining unit 10. In this way, since information is transmitted wirelessly, it is possible to prevent situations in which information transmission is interrupted due to a break in the information transmission line.

[0029] Furthermore, it is more preferable that the position acquisition unit 4 further has a function of acquiring time information D41 and the information transmission unit 7 further has a function of transmitting the time information D41, as in the columnar structure monitoring system (104) of the fourth embodiment shown in Fig. 12. This makes it possible to rationally allocate recovery resources according to the time information D41.

[0030] [Variations] The present invention is not limited to the above-described embodiments and various modifications are possible. The above-described embodiments are provided as examples to facilitate understanding of the present invention and are not necessarily limited to those including all of the described configurations. Furthermore, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, or to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to delete part of the configuration of each embodiment, or to add or replace other configurations. Furthermore, the control lines and information lines shown in the figures are those considered necessary for explanation, and do not necessarily represent all control lines and information lines necessary for the product. In reality, it is acceptable to consider that almost all components are interconnected. Possible modifications of the above-described embodiments include, for example, the following:

[0031] (1) In the above embodiment, the utility pole monitoring systems 101 to 104 detect the damage state of the utility pole 1, but the present invention can also be applied to the detection of the damage state of columnar structures other than the utility pole 1, such as steel towers.

[0032] (2) In the above embodiment, the location acquisition unit 4 outputs the latitude and longitude information D4. However, location information other than the latitude and longitude information D4 may be output as long as it is information that can identify the location of the slave station 3.

[0033] (3) The database 9 in the above embodiment may be placed on a server on the network, and may not be included in the master station 8. [Explanation of symbols]

[0034] 1. Utility poles (columnar structures) 2. Power distribution lines 3 slave stations 4 Position acquisition part 5 Tilt Sensor 6 batteries 7 Information transmission section 10 Judgment section 12 Road 32 Power receiving unit 35 Radio transmitter 36 Radio receiver 101~104 Utility pole monitoring system (pole structure monitoring system) D4 Latitude and longitude information (location information) D5 Tilt Information H1 Breakage height (breakage position) D41 Time information

Claims

1. a plurality of slave stations each including: a position acquisition unit attached to a columnar structure and outputting position information; an inclination sensor attached to the columnar structure and outputting inclination information; and an information transmission unit transmitting the position information and the inclination information; a determination unit that receives the position information and the tilt information from the plurality of slave stations and determines the damage state of the plurality of columnar structures, The determination unit further has a function of determining the influence of the damage state of the columnar structure on the road based on the contents of a database storing road information, which is information about roads in the vicinity of the columnar structure, the position information, and the inclination information. A columnar structure monitoring system characterized by:

2. A plurality of slave stations, each of which includes a position acquisition unit attached to a columnar structure and outputting position information, a tilt sensor attached to the columnar structure and outputting tilt information, and an information transmission unit transmitting the position information and the tilt information; a determination unit that receives the position information and the tilt information from the plurality of slave stations and determines the damage state of the plurality of columnar structures, The columnar structure is installed along a road, The determination unit further has a function of determining the influence of the damage state of the columnar structure on the road, The determination unit further has a function of estimating a breakage position of the columnar structure based on the position information and the tilt information. A columnar structure monitoring system characterized by:

3. Each of the plurality of slave stations comprises: a battery that supplies power to the position acquisition unit, the tilt sensor, and the information transmission unit; a power acquisition unit that acquires power from a conductor of a power distribution line in a non-contact manner and a power receiving unit that charges the battery.

3. A columnar structure monitoring system according to claim 1 or 2.

4. a plurality of wireless transmission units provided corresponding to the plurality of slave stations, the wireless transmission units transmitting the position information and the tilt information output from the information transmission unit; a wireless receiving unit that wirelessly receives the position information and the tilt information and supplies them to the determining unit.

3. A columnar structure monitoring system according to claim 1 or 2.

5. the location acquisition unit further has a function of acquiring time information; The information transmitting unit further has a function of transmitting the time information.

3. A columnar structure monitoring system according to claim 1 or 2.

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