JP2023083025A - Columnar structure monitoring system - Google Patents

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

The present invention relates to a columnar structure monitoring system.

As a background art of this technical field, the abstract of Patent Document 1 below describes, "[Problem] Accurately measuring the acceleration applied to utility poles, efficiently collecting measurement data from a large number of utility poles scattered over a wide area, and To provide a system for early detection of occurrence.[Solution] A sensor node installed on a utility pole acquires acceleration values from a built-in acceleration sensor capable of measuring in multiple directions a specified number of times, The acceleration data is averaged for each measured direction and the acceleration applied to the utility pole is calculated.The sensor node transmits the calculated acceleration data to the gateway installed near the utility pole by short-range wireless.Gateway transmits the received acceleration data to the server via long-distance wireless communication.The server accumulates the received acceleration data in a database, and when the maximum tilt angle calculated from the received acceleration data exceeds the threshold set in advance for each utility pole, If the angle of inclination exceeds the threshold, the server determines that the pole is in an abnormal state and notifies the pre-registered administrator's address."

JP 2018-4387 A

By the way, in the above-described technology, there is a demand to more appropriately acquire the damage state of a columnar structure such as a utility pole.
SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances described above, and it is an object of the present invention to provide a columnar structure monitoring system capable of appropriately acquiring the state of a columnar structure.

In order to solve the above problems, a columnar structure monitoring system according to the present invention 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; a plurality of slave stations, each of which includes an information transmission unit that transmits position information and the tilt information; receives the position information and the tilt information from the plurality of slave stations; and a determination unit that determines a damage state.

ADVANTAGE OF THE INVENTION According to this invention, the state of a columnar structure can be acquired appropriately.

1 is a schematic diagram showing the configuration of a utility pole peripheral portion in the utility pole monitoring system according to the first embodiment; FIG. 1 is a block diagram of a utility pole monitoring system according to a first embodiment; FIG. 1 is a block diagram of a computer; FIG. FIG. 3 is a schematic plan view showing an example of the arrangement relationship between roads and utility poles; FIG. 11 is a schematic plan view showing another example of the arrangement relationship between roads and utility poles; It is a figure which shows an example of the damage aspect of a utility pole. FIG. 10 is a diagram showing another example of a state of damage to a utility pole; FIG. 11 is a schematic plan view showing another example of the arrangement relationship between roads and utility poles; FIG. 10 is a schematic diagram showing the configuration of a utility pole peripheral portion in the utility pole monitoring system according to the second embodiment. It is a block diagram of a utility pole monitoring system according to a second embodiment. It is a block diagram of the utility pole monitoring system by 3rd Embodiment. It is a block diagram of the utility pole monitoring system by 4th Embodiment.

[Overview of embodiment]
By applying the technology of Patent Document 1, it is possible to detect the inclination of utility poles at an early stage by measuring the acceleration generated on utility poles and collecting measurement data from a large number of utility poles scattered over a wide area. However, the technique described above has the problem that the direction of inclination of the utility pole cannot be determined. Therefore, in the embodiment described later, the tilt direction of the utility pole can be determined. For example, a slave station having a GPS receiver and an inclination sensor is provided on a utility pole or steel tower. Also, at the base, a master station is provided to communicate with the slave stations. At the base, the information received from the child station is compared with the latitude/longitude information of the road stored in advance, so that the effect on the road can be determined. As a result, in the embodiment described later, it is possible to determine the influence of damage to the utility pole or the like on the road.

[First embodiment]
<Configuration of the first embodiment>
FIG. 1 is a schematic diagram showing the configuration of the periphery of a utility pole in a utility pole monitoring system 101 (columnar structure monitoring system) according to the first embodiment.
In FIG. 1, a distribution line 2 is laid between utility poles 1a and 1b (columnar structures). Slave stations 3a and 3b are attached to the utility poles 1a and 1b, respectively. In the following description, when there are a plurality of constituent elements having the same or similar functions, they may be described with the same number and different letters, such as "electric poles 1a and 1b". However, when there is no need to distinguish between these plurality of constituent elements, the English letters may be omitted, such as "electric pole 1," for example.

FIG. 2 is a block diagram of the utility pole monitoring system 101 according to the first embodiment.
A utility pole monitoring system 101 includes a master station 8 and a plurality of slave stations 3 provided on a utility pole 1 (see FIG. 1). However, only one slave station 3 is shown in the drawing. Also, the master station 8 is provided at a power distribution command center, a power distribution substation, or the like. The slave station 3 includes a position acquisition section 4 , an inclination sensor 5 , a battery 6 and an information transmission section 7 . The position acquisition unit 4 acquires latitude/longitude information D4 (position information) of the slave station 3 . A receiver that receives satellite radio waves such as GPS (Global Positioning System) and acquires the position, time, date, and the like can be applied to the position acquisition unit 4 . Also, the tilt sensor 5 acquires tilt information D5 of the utility pole 1 on which the slave station 3 is mounted. The information transmission unit 7 transmits the latitude/longitude information D4 and the inclination information D5 to the master station 8. FIG. By having the battery 6, the slave station 3 can acquire various information and transmit it to the master station 8 even in the event of a power failure.

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

The determination unit 10 determines the damage state of each utility pole 1 based on the stored contents of the database 9 and the latitude/longitude information D4 and inclination information D5 received from the slave station 3 . For example, the determination unit 10 compares the latitude/longitude information D4 of the slave station 3 with the contents of the database 9 to determine whether the utility pole 1 interferes with the road 12 (see FIG. 5). The determination unit 10 transmits the determination result to the restoration planning unit 11 , and the restoration planning unit 11 draws up a restoration plan for the damaged utility pole 1 . Therefore, even if the distribution equipment inspection vehicle does not go to the site, the damage information of the utility pole 1 can be collected, so that the restoration work resources can be rationally allocated.

FIG. 3 is a block diagram of computer 900 . The master station 8 shown in FIG. 2 has one or a plurality of computers 900 shown in FIG.
3, computer 900 includes CPU 901, RAM 902, ROM 903, HDD 904, communication I/F 905, input/output I/F 906, and media I/F 907. Communication I/F 905 is connected to communication circuit 915 that communicates with child station 3 . Input/output I/F 906 is connected to input/output device 916 . A 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 implements various functions by executing application programs loaded into the RAM 902 . The inside of the master station 8 previously shown in FIG. 2 shows functions implemented by application programs and the like as blocks.

FIG. 4 is a schematic plan view showing an example of the arrangement relationship between roads and utility poles.
In FIG. 4, a plurality of utility poles 1a, 1b, 1c, and 1d are installed along the road 12 outside the roadside. A distribution line 2 is laid between these utility poles. Slave stations 3a, 3b, 3c, and 3d are attached to the utility poles 1a, 1b, 1c, and 1d, respectively. In the illustrated state, the remote stations 3a, 3b, 3c, and 3d are separated from the center line 13 of the road 12 by more than half the width of the road 12. FIG. Therefore, the determination unit 10 of the master station 8 (see FIG. 2) determines that "each utility pole 1 does not interfere with the road 12".

FIG. 5 is a schematic plan view showing another example of the arrangement relationship between roads and utility poles.
In FIG. 5, the utility pole 1b on which the slave station 3b is mounted is damaged and tilts toward the road 12 side. In this state, since the slave station 3b has moved beyond the center line 13 of the road 12, the determination unit 10 of the master station 8 (see FIG. 2) determines that the utility pole 1b is interfering with the road 12. ” is determined.

FIG. 6 is a diagram showing an example of damage to utility poles, and FIG. 7 is a diagram showing another example of damage to utility poles.
6 and 7, the utility pole 1 indicated by a solid line indicates the state before damage, and the utility pole 1 indicated by a two-dot chain line indicates the state after damage. In this embodiment, since the inclination information D5 can be acquired by the inclination sensor 5 provided in the slave station 3, the inclination angle φ of the utility pole can be acquired. Also, the latitude/longitude information D4 of the child station 3 can be obtained by the position obtaining unit 4 . The height H of the slave station 3 from the ground is known.

As a result, the determination unit 10 of the master station 8 can determine whether the utility pole 1 is tilted from its base as shown in FIG. 6 or is broken midway as shown in FIG. In addition, in the state of FIG. 7, the determination unit 10 can also calculate the breakage height H1 (breakage position). As a result, the determining unit 10 can determine whether or not the vehicle can pass on the road 12 based on whether or not the vehicle height of various vehicles such as a distribution equipment inspection vehicle is less than the breakage height H1. It is possible.

FIG. 8 is a schematic plan view showing another example of the arrangement relationship between roads and utility poles.
Each element in FIG. 8 is similar to that in FIG. 4, but the utility pole 1b is slanted away from the road. In the present embodiment, since the position acquisition unit 4 is provided in the child station 3, the determination unit 10 of the master station 8 (see FIG. 2) detects that the separation distance between the child station 3 and the road 12 is greater than normal. Therefore, it can be determined that the inclination direction of the utility pole 1b is on the opposite side of the road.

[Second embodiment]
FIG. 9 is a schematic diagram showing the configuration of a utility pole peripheral portion in the utility pole monitoring system 102 (columnar structure monitoring system) according to the second embodiment. In the following description, parts corresponding to those in the above-described first embodiment are denoted by the same reference numerals, and description thereof may be omitted.
In FIG. 9, the construction of electric poles 1a and 1b and distribution line 2 is the same as that of 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.

FIG. 10 is a block diagram of the 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). Also, the slave station 3 is the same as that of the first embodiment except that it includes a power receiving unit 32 . Although illustration is omitted, the power receiving unit 32 includes a power acquisition unit that acquires power from conductors of the distribution line 2 in a contactless manner, and a rectifier circuit that rectifies the acquired power. Thereby, the power receiving unit 32 supplies power to the battery 6 and charges the battery 6 . The power acquisition unit can apply a capacitively coupled voltage sensor or a split current transformer, and may apply other non-contact electrical or magnetic coupling means. According to this embodiment, since the battery 6 in the slave station 3 can be charged while the distribution line 2 is energized, the frequency of replacing the battery 6 can be suppressed.

[Third embodiment]
FIG. 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, portions corresponding to those of the other embodiments described above are denoted by the same reference numerals, and description thereof may be omitted.
The configurations of the slave station 3 and the master station 8 in the third embodiment are the same as those in the first embodiment (see FIG. 2). Also, the configuration of the utility pole peripheral portion is the same as that of the first embodiment (see FIG. 1). However, a radio transmission section 35 is connected to the information transmission section 7 of the slave station 3 , and a radio reception section 36 is connected to the master station 8 . As a result, the slave station 3 transmits the latitude/longitude information D4 and the inclination information D5 via the wireless transmission section 35, and the master station 8 acquires these information via the wireless reception section . According to this embodiment, since 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.

[Fourth embodiment]
FIG. 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, portions corresponding to those of the other embodiments described above are denoted by the same reference numerals, and description thereof may be omitted.
The configurations of the slave station 3 and the master station 8 in the fourth embodiment are the same as those in the first embodiment (see FIG. 2). Also, the configuration of the utility pole peripheral portion is the same as that of 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 to the information transmission unit 7 as the time information D41. The information transmission unit 7 transmits the time information D41 to the master station 8 together with the latitude/longitude information D4 and the inclination information D5.

According to the present embodiment, the determination unit 10 of the master station 8 receives the time information D41, so it can grasp the damage condition of the utility pole 1 and the temporal change in the impact of the damage on the road. In a case where utility poles are damaged due to a disaster such as a typhoon, damage to utility poles 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 recovery planning section 11, it becomes possible to rationally allocate recovery resources.

[Effects of Embodiment]
As described above, according to the above-described embodiments, the columnar structure monitoring system (101 to 104) includes the position acquisition unit 4 attached to the columnar structure (1) and outputting the position information (D4), the columnar structure (1), each of which includes a tilt sensor 5 that outputs tilt information D5 and an information transmission unit 7 that transmits position information (D4) and tilt information D5; A determination unit 10 that receives position information (D4) and inclination information D5 from the slave station 3 and determines the damage state of the plurality of columnar structures (1). Accordingly, 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.

Further, the columnar structure (1) is installed along the road 12, and the determination unit 10 further has a function of determining the influence of the damage state of the columnar structure (1) on the road 12. preferable. As a result, the recovery plan for the columnar structure (1) can be made appropriately.

Further, it is more preferable that the determination unit 10 further has 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, it is possible to determine whether or not the vehicle can pass through the portion of the columnar structure (1) according to the vehicle height of the vehicle.

Moreover, like the columnar structure monitoring system (102) of the second embodiment shown in FIG. It is more preferable to further include a battery 6 that supplies power, a power acquisition unit that acquires power from the conductors of the distribution line 2 in a non-contact manner, and a power reception unit 32 that charges the battery 6 . As a result, the battery 6 can be charged during the period when the distribution line 2 is energized, so the replacement frequency of the battery 6 can be suppressed.

Further, as in the columnar structure monitoring system (103) of the third embodiment shown in FIG. It is more preferable to further include a plurality of wireless transmitters 35 that wirelessly transmit the tilt information D5, and a wireless receiver 36 that wirelessly receives the position information (D4) and the tilt information D5 and supplies them to the determination unit 10. Accordingly, since information is transmitted by radio, it is possible to prevent a situation in which information transmission is interrupted due to a disconnection of the information transmission line.

Moreover, like the columnar structure monitoring system (104) of the fourth embodiment shown in FIG. It is more preferable to further have a function of transmitting the This makes it possible to rationally allocate recovery resources according to the time information D41.

[Modification]
The present invention is not limited to the embodiments described above, and various modifications are possible. The above-described embodiments are exemplified for easy understanding of the present invention, and are not necessarily limited to those having all the described configurations. Also, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Also, it is possible to delete part of the configuration of each embodiment, or to add or replace other configurations. Also, the control lines and information lines shown in the drawings are those considered to be necessary for explanation, and do not necessarily show all the control lines and information lines necessary on the product. In practice, it may be considered that almost all configurations are interconnected. Possible modifications to the above embodiment are, for example, the following.

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

(2) In the above embodiment, the position acquisition unit 4 outputs the latitude/longitude information D4, but position information other than the latitude/longitude information D4 may be output as long as it is information that can specify the position of the slave station 3. .

(3) The database 9 in the above embodiment may be placed on a server or the like on the network, and may not be included in the master station 8 .

1 utility pole (columnar structure)
2 distribution line 3 slave station 4 position acquisition unit 5 tilt sensor 6 battery 7 information transmission unit 10 determination unit 12 road 32 power reception unit 35 wireless transmission unit 36 wireless reception unit 101 to 104 utility pole monitoring system (columnar structure monitoring system)
D4 Latitude/longitude information (location information)
D5 Inclination information H1 Breakage height (breakage position)
D41 time information

Claims (6)

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 transmitting unit transmitting the position information and the tilt information. a plurality of slave stations each provided;
A columnar structure monitoring system, comprising: a determination unit that receives the position information and the tilt information from the plurality of slave stations and determines the state of damage of the plurality of columnar structures. The columnar structure is installed along a road,
The columnar structure monitoring system according to claim 1, wherein the determination unit further has a function of determining an effect of the damage state of the columnar structure on the road. The columnar structure monitoring system according to claim 2, wherein the determination unit further has a function of estimating a breakage position of the columnar structure based on the position information and the inclination information. Each of the plurality of slave stations,
a battery that supplies power to the position acquisition unit, the tilt sensor, and the information transmission unit;
The columnar structure monitoring system according to claim 1, further comprising: a power acquisition unit that acquires power from a conductor of a distribution line in a non-contact manner, and a power reception unit that charges the battery. a plurality of wireless transmission units that are provided corresponding to the plurality of slave stations and that wirelessly transmit the position information and the tilt information output from the information transmission unit;
The columnar structure monitoring system according to claim 1, further comprising a wireless receiver that wirelessly receives the position information and the tilt information and supplies the information to the determination unit. The position acquisition unit further has a function of acquiring time information,
The columnar structure monitoring system according to claim 1, wherein the information transmission unit further has a function of transmitting the time information.

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