JP7263719B2 - BOLT, WATER DETECTION SYSTEM, AND WATER DETECTION METHOD - Google Patents

Description

Embodiments of the present invention relate to bolts, flood detection systems, and flood detection methods.

A pole switch is a switch installed for control and operation of a distribution system. For example, pole-mounted switches develop rust due to long-term use, and if the rust progresses, the outer box may be perforated, and rainwater may enter through the perforations. If the pole switch is flooded due to rainwater entering through the holes in the outer box, there is a risk of causing a public disaster such as a power outage in the power distribution system in which the pole switch is installed. For this reason, periodical water ingress inspections are conducted on pole switches.

As a technique for detecting water intrusion in a pole switch, a technique for detecting water intrusion in a pole switch using ultrasonic waves is known (see, for example, Patent Document 1). In this technology, ultrasonic waves are made to enter the steel bottom plate of the pole switch from the transmission probe at a predetermined angle by the oblique angle method, and the reflected waves from the pole switch are transferred to the transmission probe. Received by the receiving probe installed on the steel bottom plate facing the bottom plate, from the received reflected waves, the reflected wave due to the transverse wave from the steel bottom plate and the longitudinal wave reflected wave from the water interface caused by immersion Detect and display.

JP-A-7-280775

In order to detect water intrusion in the pole switch using ultrasonic waves, it is necessary to go to the location where the pole switch is installed and apply ultrasonic waves to the pole switch. A huge amount of pole-mounted switches are installed in the distribution system, requiring a great deal of labor.
In addition, in order to detect water intrusion in the pole switch using ultrasonic waves, it is necessary to observe the waveform of the reflected wave, and judgment by a skilled engineer is required.
The above applies not only to pole-mounted switches, but also to switches.

The present invention has been made in view of the above points, and an object thereof is to provide a bolt, a water ingress detection system, and a water ingress detection method that can easily acquire the state of water in a switch.

One aspect of the present invention is a bolt that fits into a screw hole penetrating a detection target space in a switch from the outside, the bolt is provided with a sensor that detects the state of flooding in the detection target space, and the bolt: The sensor is provided at the screw tip portion of the bolt, and the sensor attached to the screw tip portion is exposed to the inside of the outer case of the switch at the gas inlet at the bottom of the detection target space. Inset, the sensor is a bolt, which is a short circuit sensor.
The bolt according to one aspect of the present invention includes a communication unit that transmits information indicating the state of flooding detected by the sensor to a management device that manages the inside of the switch .
In the bolt of one aspect of the present invention, the switch is a pole switch.
In one aspect of the bolt of the present invention, the threaded hole is an airtight plug.
One aspect of the present invention is provided with a sensor for externally detecting a flooded state of a detection target space in a switch, and a bolt that fits into a screw hole penetrating the detection target space, and the sensor detected by the sensor. A communication device that transmits information indicating the state of flooding to a management device that manages the inside of the switch, and whether the inside of the switch is flooded based on the information indicating the state of flooding transmitted by the communication device and a management device for determining whether or not the sensor is a short-circuit sensor and is attached to the screw tip of the bolt, and the bolt is connected to a gas inlet at the bottom of the detection target space. and a water intrusion detection system, which is exposed inside the outer casing of the switch .
One aspect of the present invention is a management device that manages the inside of the switch, information indicating the state of flooding detected by a sensor provided in a bolt fitted in a screw hole penetrating from the outside into a detection target space in the switch. and determining whether or not the inside of the switch is flooded based on the information indicating the state of flooding transmitted in the transmitting step, wherein the bolt is The sensor is provided at the screw tip portion of the bolt, and the sensor attached to the screw tip portion is exposed to the inside of the outer case of the switch at the gas inlet at the bottom of the detection target space. It is a water intrusion detection method embedded and the sensor is a short circuit sensor.

ADVANTAGE OF THE INVENTION According to embodiment of this invention, the bolt which can acquire the flooding state in a switch easily, a flooding detection system, and a flooding detection method can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows an example of the distribution line system|strain to which the inundation detection system of 1st Embodiment is applied. It is a figure which shows an example of the bolt of 1st Embodiment. 1 is a block diagram showing an example of a water intrusion detection system according to a first embodiment; FIG. It is a figure which shows an example of a table. 4 is a sequence chart showing an example of the operation of the water ingress detection system of the first embodiment; It is a schematic diagram which shows an example of the distribution line system|strain to which the inundation detection system of 2nd Embodiment is applied. It is a figure which shows an example of the bolt of 2nd Embodiment. FIG. 11 is a block diagram showing an example of a water ingress detection system according to a second embodiment; FIG. It is a figure which shows an example of a table. FIG. 11 is a sequence chart showing an example of the operation of the water ingress detection system of the second embodiment; FIG.

Next, the bolt, water ingress detection system, and water ingress detection method of this embodiment will be described with reference to the drawings. The embodiments described below are merely examples, and embodiments to which the present invention is applied are not limited to the following embodiments.
In addition, in all the drawings for explaining the embodiments, the same reference numerals are used for the parts having the same functions, and repeated explanations are omitted.
In addition, "based on XX" in the present application means "based on at least XX", and includes cases based on other elements in addition to XX. Moreover, "based on XX" is not limited to the case of using XX directly, but also includes the case of being based on what has been calculated or processed with respect to XX. "XX" is an arbitrary element (for example, arbitrary information).

(First embodiment)
(Flood detection system)
FIG. 1 is a schematic diagram showing an example of a distribution line system to which the inundation detection system of the first embodiment is applied.
The inundation detection system of the first embodiment is applied to a distribution line system. A distribution line system supplies electric power from a power plant to consumer loads such as residences, commercial facilities, and industrial facilities through substations.
A large number of electric devices such as switches, automatic voltage regulators, and transformers are connected to the distribution line system. In the example shown in FIG. 1, a pole switch 100 is shown as an example of the electrical equipment. The pole switch 100 stops (blackouts) power transmission through the high-voltage distribution line when an accident such as a short circuit or ground fault occurs. As shown in FIG. 1, the pole switch 100 is installed (mounted) above a utility pole 102, and has a high voltage distribution line 106a on the power supply side and a high voltage distribution line on the load side, which are mounted on a cross arm 104. 106b is connected. The water intrusion detection system of the present embodiment detects whether water has entered the outer box (case) 100 a of the pole switch 100 .

In the manufacturing process of the pole switch 100, when confirming that there is no airtight leak in the assembled outer box 100a, a gas inlet is mainly provided at the bottom of the outer box 100a in order to pressurize the inside of the outer box 100a. It is formed. The gas inlet is a screw hole, and after confirming that there is no airtight leakage in the outer case 100a, an airtight plug is fitted. An example of an airtight plug is bolt 300 . As a result, the inside of the outer box 100a can be kept airtight, so that the intrusion of moisture into the pole switch 100 can be reduced.
Moreover, a sensor is attached to the screw tip portion of the bolt 300 . The sensor detects the state of water intrusion inside the outer casing 100a. A sensor value obtained by detection by the sensor is transmitted to communication device 200 via cable 320 .
The communication device 200 is installed in association with each pole switch 100 . The communication device 200 receives the sensor value from the sensor attached to the bolt 300, and creates sensor value notification information including the received sensor value and the communication device ID of the communication device 200 and addressed to the management device 400. do. The communication device 200 transmits the created sensor value notification information to other devices such as the management device 400 .
The management device 400 receives the sensor value notification information transmitted by the communication device 200, and acquires the sensor value and the communication device ID included in the received sensor value notification information. Based on the acquired sensor value, the management device 400 determines whether the pole switch 100 inside the outer box 100a into which the bolt 300 having the sensor that transmitted the sensor value is fitted is flooded. The management device 400 identifies the pole switch 100 corresponding to the acquired communication device ID, and associates the identified pole switch 100 with the determination result of whether or not the pole switch 100 is flooded. to display.

(Bolt 300)
FIG. 2 is a diagram showing an example of a bolt according to the first embodiment; FIG. As described above, the bolt 300 is fitted into the screw hole in the lower portion of the outer casing 100a of the pole switch 100. As shown in FIG.
The bolt 300 includes a sensor 310, a cable 320 and a bolt body B. Examples of sensors 310 are short circuit sensors, temperature sensors, humidity sensors, and the like. A case where a temperature sensor is used as an example of the sensor 310 will be described below. The sensor 310 is attached to the threaded tip portion SD of the bolt body B. As shown in FIG. A sensor 310 may be embedded in the threaded tip portion SD of the bolt body B. As an example, the case where the sensor 310 is attached to the threaded portion SD of the bolt body B will be described below. With this configuration, when the bolt 300 is fitted into the screw hole in the lower part of the outer box 100a of the pole switch 100, the sensor 310 attached to the screw tip portion SD will move inside the outer box 100a. , the flooded state of the space inside the outer case 100a can be detected.
A sensor value obtained by the sensor 310 detecting the flooded state of the space inside the outer box 100 a is transmitted to the communication device 200 via the cable 320 .

FIG. 3 is a block diagram showing an example of the water intrusion detection system of the first embodiment. In the example shown in FIG. 3, the water intrusion detection system includes a bolt 300-1, a communication device 200-1, a bolt 300-2, a communication device 200-2, a bolt 300-3, and a communication device 200-3. and a management device 400 .
The bolt 300-1 is fitted in the outer box 100a-1 (not shown) of the pole switch 100-1 (not shown), and the bolt 300-2 is fitted outside the pole switch 100-2 (not shown). It is fitted in a box 100a-2 (not shown) and the bolt 300-3 is fitted in an outer casing 100a-3 (not shown) of a pole switch 100-3 (not shown).
An arbitrary bolt among bolts 300-1, 300-2, and 300-3 is referred to as bolt 300. As shown in FIG. Any of sensor 310-1, sensor 310-2, and sensor 310-3 will be referred to as sensor 310. FIG. An arbitrary communication device among communication device 200-1, communication device 200-2, and communication device 200-3 is described as communication device 200. FIG.
Since the bolt 300, the sensor 310, and the communication device 200 have been described above, a description thereof will be omitted here.

(Management device 400)
The management device 400 is implemented by a device such as a personal computer, server, or industrial computer. The management device 400 electrically connects the communication unit 410, the storage unit 420, the information processing unit 430, the display unit 440, the operation unit 450, and each of the components as shown in FIG. and a bus line 460 such as an address bus and a data bus for
Communication unit 410 is realized by a communication module. Communication unit 410 communicates with an external communication device such as communication device 200 via network 50 . Specifically, the communication unit 410 receives sensor value notification information transmitted by the communication device 200 and outputs the received sensor value notification information to the information processing unit 430 . Further, the communication unit 410 may transmit information that associates the pole switch ID output by the information processing unit 430 with the flood determination result to another device.

The storage unit 420 is realized by, for example, a RAM (Random Access Memory), ROM (Read Only Memory), HDD (Hard Disk Drive), flash memory, or a hybrid storage device in which a plurality of these are combined. Storage unit 420 stores program 421 executed by information processing unit 430 , application 422 , and table 423 .

The application 422 causes the management device 400 to receive sensor value notification information transmitted by the communication device 200 . The application 422 causes the management device 400 to acquire the sensor value and the communication device ID from the received sensor value notification information. The application 422 causes the management device 400 to determine, based on the acquired sensor value, whether or not the inside of the outer case 100a in which the bolt 300 having the sensor that output the sensor value is fitted is flooded. The application 422 causes the management device 400 to acquire the pole switch ID of the pole switch 100 corresponding to the acquired communication device ID. The application 422 causes the display unit 440 to display the determination result as to whether or not the inside of the outer box 100a is flooded (hereinafter referred to as "flood determination result") and the pole switch ID of the pole switch 100. together with output to another device.
The table 423 is information in a table format that associates communication device IDs with pole switch IDs.
FIG. 4 is a diagram showing an example of a table. In the example shown in FIG. 4, the communication device ID "CE001" is associated with the pole switch ID "PS001" of the pole switch 100 corresponding to the communication device indicated by the communication device ID. Returning to FIG. 3, the description continues.
The display unit 440 displays the pole switch ID of the pole switch 100 and the flood determination result of the pole switch 100 in association with each other. Specifically, the display unit 440 displays the pole switch ID of the pole switch 100, and when the user presses the pole switch ID of the pole switch 100, the user The pole switch ID that has been pushed and the flood determination result of the pole switch 100 corresponding to the pole switch ID are displayed in association with each other.
The operation unit 450 is configured by, for example, a touch panel, detects a touch operation on the screen displayed on the display unit 440 , and outputs the detection result of the touch operation to the information processing unit 430 .

All or part of the information processing unit 430 is a functional unit realized by executing a program 421 stored in the storage unit 420 by a processor such as a CPU (Central Processing Unit) (hereinafter referred to as a software functional unit). ). Note that all or part of the information processing unit 430 may be realized by hardware such as LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), or FPGA (Field-Programmable Gate Array). It may be realized by a combination of units and hardware.
The information processing section 430 includes, for example, an acquisition section 431 , a flood determination section 432 , and an output section 433 .

The acquisition unit 431 acquires the sensor value notification information output by the communication unit 410 and outputs the acquired sensor value notification information to the inundation determination unit 432 .
The inundation determination unit 432 acquires the sensor value notification information output by the acquisition unit 431, and acquires the communication device ID and the sensor value included in the acquired sensor value notification information. Based on the acquired sensor value, the flood determination unit 432 determines whether or not the pole switch 100 inside the outer case 100a into which the bolt 300 having the sensor that transmitted the sensor value is fitted is flooded. . Specifically, if the difference between the temperature inside the outer box 100a and the temperature outside the outer box 100a is equal to or greater than a threshold value, the water inundation determination unit 432 It may be determined that the upper switch 100 is submerged, and if it is less than the threshold, it may be determined that the pole switch 100 is not submerged. This is because when the pole switch 100 is submerged, it is assumed that the temperature change inside the outer case 100a is smaller than the temperature change outside the outer case 100a. Here, the temperature outside the outer casing 100a may be obtained from weather information provided by the Meteorological Agency, or may be obtained from a thermometer installed in the communication device 200 . When acquiring from a thermometer installed in the communication device 200, the communication device 200 may include information indicating the temperature outside the outer box 100a in the sensor value notification information and transmit it. The flood determination unit 432 outputs the acquired communication device ID and the flood determination result to the output unit 433 .
The output unit 433 acquires the communication device ID output by the flood determination unit 432 and the flood determination result. The output unit 433 acquires the pole switch ID associated with the acquired communication device ID from the table 423 stored in the storage unit 420 . The output unit 433 outputs the acquired pole switch ID based on the detection result of the touch operation output by the operation unit 450 when the user presses the pole switch ID of the pole switch 100. and the result of flood determination are displayed on the display unit 440 in association with each other. Further, the output unit 433 may transmit information that associates the pole switch ID and the result of the flood determination from the communication unit 410 to another device.

(Operation of flood detection system)
FIG. 5 is a diagram showing an example of the operation of the inundation determination system of the first embodiment.
(Step S1)
A sensor 310-1 attached to the screw tip of the bolt 300-1 detects the state of water intrusion inside the outer box 100a-1. Send to 1. Specifically, the sensor 310-1 detects the flooded state inside the outer box 100a-1 at a predetermined cycle such as once a day, once a week, or once a month. The sensor value obtained by this is transmitted to the communication device 200-1.
(Step S2)
Communication device 200-1 acquires the sensor value transmitted by bolt 300-1, and generates sensor value notification information (hereinafter referred to as “first sensor "value notification information"). Communication device 200 - 1 transmits the created first sensor value notification information to management device 400 . The communication unit 410 of the management device 400 receives the sensor value notification information transmitted by the communication device 200-1.
(Step S3)
A sensor 310-2 attached to the screw tip of the bolt 300-2 detects the state of water intrusion inside the outer box 100a-2. 2.

(Step S4)
Communication device 200-2 acquires the sensor value transmitted by bolt 300-2, and generates sensor value notification information (hereinafter referred to as “second sensor "value notification information"). Communication device 200 - 2 transmits the created second sensor value notification information to management device 400 . Communication unit 410 of management device 400 receives the sensor value notification information transmitted by communication device 200-2.
(Step S5)
A sensor 310-3 attached to the screw tip of the bolt 300-3 detects the state of water intrusion inside the outer box 100a-3. Send to 3.
(Step S6)
Communication device 200-3 acquires the sensor value transmitted by bolt 300-3, and generates sensor value notification information (hereinafter referred to as “third sensor "value notification information"). Communication device 200 - 3 transmits the created third sensor value notification information to management device 400 . Communication unit 410 of management device 400 receives the sensor value notification information transmitted by communication device 200-3.

(Step S7)
The communication unit 410 of the management device 400 receives the first sensor value notification information transmitted by the communication device 200-1, the second sensor value notification information transmitted by the communication device 200-2, and the second sensor value notification information transmitted by the communication device 200-3. 3 sensor value notification information, and outputs the received first sensor value notification information, second sensor value notification information, and third sensor value notification information to the acquisition unit 431 .
The acquisition unit 431 acquires the first sensor value notification information, the second sensor value notification information, and the third sensor value notification information output by the communication unit 410, and acquires the acquired first sensor value notification information and the second sensor value notification information. The value notification information and the third sensor value notification information are output to the inundation determination unit 432 .
The inundation determination unit 432 acquires the first sensor value notification information output by the acquisition unit 431, and acquires the communication device ID-1 and the sensor value included in the acquired first sensor value notification information. Based on the acquired sensor value, the flood determination unit 432 determines whether or not the inside of the outer box 100a-1 in which the bolt 300-1 having the sensor 310-1 that transmitted the sensor value is fitted is flooded. do. The flood determination unit 432 outputs the acquired communication device ID and the flood determination result to the output unit 433 .
The inundation determination unit 432 acquires the second sensor value notification information output by the acquisition unit 431, and acquires the communication device ID-2 and the sensor value included in the acquired second sensor value notification information. Based on the acquired sensor value, the flood determination unit 432 determines whether or not the inside of the outer box 100a-2 in which the bolt 300-2 having the sensor 310-2 that transmitted the sensor value is fitted is flooded. do. The flood determination unit 432 outputs the acquired communication device ID-2 and the flood determination result to the output unit 433 .
The inundation determination unit 432 acquires the third sensor value notification information output by the acquisition unit 431, and acquires the communication device ID-3 and the sensor value included in the acquired third sensor value notification information. Based on the acquired sensor value, the flood determination unit 432 determines whether or not the inside of the outer box 100a-3 in which the bolt 300-3 having the sensor 310-3 that transmitted the sensor value is fitted is flooded. do. The flood determination unit 432 outputs the obtained communication device ID-3 and the flood determination result to the output unit 433 .

(Step S8)
The output unit 433 of the management device 400 acquires the communication device ID-1 output by the flood determination unit 432 and the flood determination result. The output unit 433 acquires the pole switch ID-1 stored in association with the acquired communication device ID-1 from the table 423 stored in the storage unit 420 . The output unit 433 detects a touch operation output by the operation unit 450 when the user operates the operation unit 450 to press the pole switch ID-1 of the pole switch 100-1. Based on the result, the acquired pole switch ID-1 and the flood determination result are associated and displayed on the display unit 440 . Further, the output unit 433 may transmit information that associates the pole switch ID-1 with the result of the flood determination from the communication unit 410 to another device.
Further, the output unit 433 of the management device 400 acquires the communication device ID-2 output by the flood determination unit 432 and the flood determination result. The output unit 433 acquires the pole switch ID-2 stored in association with the acquired communication device ID-2 from the table 423 stored in the storage unit 420 . The output unit 433 detects a touch operation output by the operation unit 450 when the user operates the operation unit 450 to press the pole switch ID-2 of the pole switch 100-2. Based on the result, the acquired pole switch ID-2 and the flood determination result are associated and displayed on the display unit 440 . In addition, the output unit 433 may transmit information that associates the pole switch ID-2 with the flood determination result from the communication unit 410 to another device.
Further, the output unit 433 of the management device 400 acquires the communication device ID-3 output by the flood determination unit 432 and the flood determination result. The output unit 433 acquires the pole switch ID-3 stored in association with the acquired communication device ID-3 from the table 423 stored in the storage unit 420 . The output unit 433 detects a touch operation output by the operation unit 450 when the user operates the operation unit 450 to press the pole switch ID-3 of the pole switch 100-3. Based on the result, the acquired pole switch ID-3 and the flood determination result are associated and displayed on the display unit 440 . Further, the output unit 433 may transmit information that associates the pole switch ID-3 with the result of the flood determination from the communication unit 410 to another device.
In the sequence chart shown in FIG. 5, management device 400 receives first sensor value notification information transmitted by communication device 200-1, second sensor value notification information transmitted by communication device 200-2, and communication device 200-2. After receiving the third sensor value notification information sent by No. 3, it is determined whether or not the inside of the outer box 100a-1, the inside of the outer box 100a-2, and the inside of the outer box 100a-3 are flooded. Although the case has been described, the present invention is not limited to this example. For example, immediately after receiving the first sensor value notification information transmitted by the communication device 200-1, the management device 400 determines whether or not the inside of the outer box 100a-1 is flooded. Immediately after receiving the transmitted second sensor value notification information, it is determined whether or not the inside of the outer box 100a-2 is flooded, and immediately after receiving the third sensor value notification information transmitted by the communication device 200-3. It may be determined whether or not the inside of the outer case 100a-3 is flooded.

In the above-described first embodiment, the pole switch 100 has been described, but the present invention is not limited to this example and can be applied to any switch. In the case of a switch, it is possible to eliminate the trouble of going to the place where the switch is installed and the trouble of irradiating the pole switch 100 with ultrasonic waves. By using the pole switch 100, it is possible to eliminate the trouble of going to the place where the pole switch 100 is installed and the trouble of irradiating ultrasonic waves above the utility pole 102 on which the pole switch 100 is installed. can.
In the above-described first embodiment, the case where the bolt 300 is fitted as an airtight plug into the gas inlet at the bottom of the outer case 100a is described, but the present invention is not limited to this example. For example, it may be a screw hole other than the gas inlet penetrating the outer case 100a. If a screw hole other than the gas inlet penetrating the outer casing 100a is used, it is necessary to make a new through hole. , it can be determined whether the inside of the pole switch 100 is flooded.
In the above-described first embodiment, the case where the water intrusion detection system includes bolts 300-1, 300-2, and 300-3 has been described, but the present invention is not limited to this example. For example, the number of bolts 300 may be one, two, or four or more.
In the first embodiment described above, the case where the water intrusion detection system includes communication device 200-1, communication device 200-2, and communication device 200-3 has been described, but the present invention is not limited to this example. For example, the number of communication devices 200 may be one to two, or may be four or more.

In the first embodiment described above, the temperature outside the outer casing 100a is obtained from weather information provided by the Meteorological Agency, or is obtained from a thermometer installed in the communication device 200. has been described, but the present invention is not limited to this example. For example, a sensor 310 may be installed on the bolt 300 so that the temperature outside the outer casing 100a can also be measured. By configuring in this way, the temperature outside the outer case 100a can be obtained from the weather information provided by the Meteorological Agency, or the temperature outside the outer case 100a can be obtained from the thermometer installed in the communication device 200. The external temperature of the outer case 100a can be obtained without the need. In this case, the sensor 310 outputs the internal temperature and the external temperature of the outer box 100a to the communication device 200 as sensor values.
In the above-described first embodiment, as an example of the sensor, the case where the temperature sensor is fitted in the bolt body B has been described, but the present invention is not limited to this example. For example, a short circuit sensor may be embedded in the bolt body B. In this case, information indicating the short circuit detected by the short circuit sensor is transmitted to communication device 200 as sensor information.
Also, for example, a humidity sensor may be fitted into the bolt body B. In this case, information indicating the humidity detected by the humidity sensor is transmitted to the communication device 200 as sensor information. Based on the humidity inside the outer box 100a acquired as a sensor value, the flood determination unit 432 detects that the difference between the humidity inside the outer box 100a and the humidity outside the outer box 100a is equal to or greater than a threshold. It may be determined that it is submerged, and if it is less than the threshold, it may be determined that the pole switch 100 is not submerged. This is because when the pole switch 100 is submerged, it is assumed that the change in humidity inside the outer box 100a is smaller than the change in humidity outside the outer box 100a.
Here, the humidity outside the outer casing 100a may be obtained from weather information provided by the Meteorological Agency, or may be obtained from a thermometer installed by installing a hygrometer in the communication device 200. FIG. Further, a sensor 310 may be installed on the bolt 300 so that the humidity outside the outer box 100a can also be measured. By configuring in this way, the humidity outside the outer box 100a can be obtained from the weather information provided by the Meteorological Agency, or the humidity outside the outer box 100a can be obtained from the hygrometer installed in the communication device 200. Therefore, the humidity outside the outer case 100a can be obtained. In this case, the sensor 310 outputs the humidity inside and outside the outer box 100a to the communication device 200 as sensor values. When acquiring from a hygrometer installed in the communication device 200, the communication device 200 may include information indicating the humidity outside the outer box 100a in the sensor value notification information and transmit it.

According to the flood detection system of the first embodiment, the bolt 300 having the sensor 310 and the bolt body B is fitted into the gas inlet at the bottom of the outer casing 100a of the pole switch 100. . A sensor value obtained by the sensor 310 detecting the state of water intrusion inside the outer box 100 a is transmitted to the communication device 200 via the cable 320 . The communication device 200 receives the sensor value transmitted by the sensor 310 , creates sensor value notification information including the received sensor value and the communication device ID, and transmits the created sensor value notification information to the management device 400 .
The management device 400 receives the sensor value notification information transmitted by the communication device 200, and based on the received sensor value notification information, the management device 400 receives the sensor value notification information, and controls the inside of the outer box 100a in which the bolt 300 having the sensor 310 that transmitted the sensor value is fitted. It is determined whether or not the pole switch 100 is flooded.
Conventionally, since a huge number of pole switches 100 are installed in the distribution system, an ultrasonic water ingress detection device that requires various functions is installed for each pole switch 100. However, it was difficult to manage whether or not it was flooded remotely.
In this embodiment, by configuring in this way, it is possible to remotely detect the flooding of the pole switch 100 without having to go to the installation location of the pole switch 100 . In addition, by determining whether or not the pole switch 100 inside the outer box 100a is flooded based on the sensor value detected by the sensor 310, compared to the determination using ultrasonic waves , even a non-skilled engineer can judge whether or not there is water intrusion. In addition, since the work of determining whether or not the pole switch 100 is submerged is simplified, installation of each pole switch 100 can be facilitated.

<Configuration example>
As one configuration example, a bolt that is fitted into a screw hole penetrating the detection target space in the switch (in the embodiment, the pole switch 100) from the outside, detects the flooded state of the detection target space. A sensor is provided and the bolt has the sensor in the threaded tip portion of the bolt.
As one configuration example, a communication unit is provided that transmits information indicating the state of flooding detected by the sensor to a management device that manages the inside of the switch.
As one configuration example, the sensor detects humidity inside and outside the switch.
As one configuration example, the switch is a pole switch.
In one configuration, the threaded hole is an airtight plug.

(Second embodiment)
(Flood detection system)
FIG. 6 is a schematic diagram showing an example of a distribution line system to which the flood detection system of the second embodiment is applied.
The water intrusion detection system of the second embodiment differs from the water ingress detection system of the first embodiment in that it includes a bolt 300a instead of the bolt 300 and a management device 400a instead of the management device 400. FIG.
In the manufacturing process of the pole switch 100, when confirming that there is no airtight leak in the assembled outer box 100a, a gas inlet is mainly provided at the bottom of the outer box 100a in order to pressurize the inside of the outer box 100a. It is formed. The gas inlet is a screw hole, and after confirming that there is no airtight leakage in the outer case 100a, an airtight plug is fitted. An example of an airtight plug is bolt 300a. As a result, the inside of the outer box 100a can be kept airtight, so that the intrusion of moisture into the pole switch 100 can be reduced.

A sensor is attached to the threaded tip of the bolt 300a, and a control unit and a communication unit are attached to the head of the bolt 300a. The sensor detects the state of water intrusion inside the outer casing 100a. A sensor value obtained by detection by the sensor is output to the control unit via the cable. The control unit acquires the sensor value output by the sensor, includes the acquired sensor value and the control unit ID, creates sensor value notification information addressed to the management device 400a, and sends the created sensor value notification information to the communication unit. Output to The communication unit acquires the sensor value notification information output by the control unit, and transmits the acquired sensor value notification information to other devices such as the management device 400a.
The management device 400a receives the sensor value notification information transmitted by the bolt 300a, and acquires the sensor value and the control unit ID included in the received sensor value notification information. Based on the acquired sensor value, the management device 400a determines whether the pole switch 100 inside the outer case 100a into which the bolt 300a having the sensor that transmitted the sensor value is fitted is flooded. The management device 400a identifies the pole switch 100 corresponding to the acquired control unit ID, and associates the identified pole switch 100 with the determination result of whether or not the pole switch 100 is flooded. to display.

(Bolt 300a)
FIG. 7 is a diagram showing an example of a bolt according to the second embodiment. As described above, the bolt 300a is fitted into the screw hole in the lower portion of the outer casing 100a of the pole switch 100. As shown in FIG.
Bolt 300 a includes sensor 310 , cable 320 a , cable 320 b , bolt body B, control section 330 and communication section 340 . Examples of sensors 310 are short circuit sensors, temperature sensors, humidity sensors, and the like. A case where a temperature sensor is used as an example of the sensor 310 will be described below. The sensor 310 is attached to the threaded tip portion SD of the bolt body B. As shown in FIG. A sensor 310 may be embedded in the threaded tip portion SD of the bolt body B. As an example, the case where the sensor 310 is attached to the threaded portion SD of the bolt body B will be described below. With this configuration, when the bolt 300a is fitted into the screw hole in the lower portion of the outer box 100a of the pole switch 100, the sensor 310 attached to the screw tip portion SD will not move inside the outer box 100a. , the flooded state of the space inside the outer case 100a can be detected.
A sensor value obtained by the sensor 310 detecting the state of water in the space inside the outer casing 100a is output to the control unit 330 via the cable 320a.
The controller 330 stores the controller ID of the controller 330 . The control unit 330 acquires the sensor value output by the sensor 310, and creates sensor value notification information including the acquired sensor value and the control unit ID and addressed to the management device 400a. Control unit 330 outputs the created sensor value notification information to communication unit 340 via cable 320b.
The communication unit 340 acquires the sensor value notification information output by the control unit 330, and transmits the acquired sensor value notification information to other devices such as the management device 400a.

FIG. 8 is a block diagram showing an example of the water intrusion detection system of the second embodiment. In the example shown in FIG. 8, the water ingress detection system includes bolt 300a-1, bolt 300a-2, bolt 300a-3, and management device 400a.
The bolt 300a-1 is fitted into the outer box 100a-1 (not shown) of the pole switch 100-1 (not shown), and the bolt 300a-2 is fitted to the outside of the pole switch 100-2 (not shown). It is fitted in a box 100a-2 (not shown) and the bolt 300a-3 is fitted in an outer casing 100a-3 (not shown) of a pole switch 100-3 (not shown).
An arbitrary bolt among bolts 300a-1, 300a-2, and 300a-3 will be referred to as bolt 300a. Any of sensor 310-1, sensor 310-2, and sensor 310-3 will be referred to as sensor 310. FIG. An arbitrary control unit among control unit 330-1, control unit 330-2, and control unit 330-3 is referred to as control unit 330. FIG. An arbitrary communication unit among communication units 340-1, 340-2, and 340-3 is referred to as communication unit 340. FIG.
Since the bolt 300a, the sensor 310, the control unit 330, and the communication unit 340 have been described above, description thereof will be omitted here.

(Management device 400a)
The management device 400a is realized by a device such as a personal computer, a server, or an industrial computer. The management device 400a electrically connects the communication unit 410a, the storage unit 420a, the information processing unit 430a, the display unit 440, the operation unit 450, and the above components as shown in FIG. and a bus line 460 such as an address bus and a data bus for
The communication unit 410a is implemented by a communication module. The communication unit 410a communicates via the network 50 with an external communication device such as the bolt 300a. Specifically, the communication unit 410a receives the sensor value notification information transmitted by the bolt 300a, and outputs the received sensor value notification information to the information processing unit 430a. Further, the communication unit 410a may transmit information that associates the pole switch ID output by the information processing unit 430a with the flood determination result to another device.

The storage unit 420a is implemented by, for example, a RAM, ROM, HDD, flash memory, or a hybrid storage device in which a plurality of these are combined. The storage unit 420a stores a program 421 executed by the information processing unit 430a, an application 422a, and a table 423a.

The application 422a causes the management device 400a to receive the sensor value notification information transmitted by the bolt 300a. The application 422a causes the management device 400a to acquire the sensor value and the control unit ID from the received sensor value notification information. The application 422a causes the management device 400a to determine, based on the acquired sensor value, whether or not the inside of the outer casing 100a, in which the bolt 300a having the sensor that output the sensor value is fitted, is flooded. The application 422a causes the management device 400a to acquire the pole switch ID of the pole switch 100 corresponding to the acquired control unit ID. The application 422a causes the display unit 440 to display the result of the water inundation determination inside the outer box 100a and the pole switch ID of the pole switch 100, and outputs them to other devices.
The table 423a is information in a table format that associates the control unit ID with the pole switch ID.

FIG. 9 is a diagram showing an example of a table. In the example shown in FIG. 9, the communication unit ID "CU001" is associated with the pole switch ID "PS001" of the pole switch 100 corresponding to the communication unit indicated by the communication unit ID. Returning to FIG. 8, the description continues.

All or part of the information processing unit 430a is, for example, a software function unit realized by executing a program 421 stored in the storage unit 420a by a processor such as a CPU. All or part of the information processing unit 430a may be implemented by hardware such as LSI, ASIC, or FPGA, or may be implemented by a combination of software function units and hardware.
The information processing unit 430a includes, for example, an acquisition unit 431, a flood determination unit 432a, and an output unit 433a.

The inundation determination unit 432a acquires the sensor value notification information output by the acquisition unit 431, and acquires the control unit ID and the sensor value included in the acquired sensor value notification information. Based on the acquired sensor value, the flood determination unit 432a determines whether or not the pole switch 100 inside the outer case 100a into which the bolt 300a having the sensor that transmitted the sensor value is fitted is flooded. . Specifically, if the difference between the temperature inside the outer box 100a and the temperature outside the outer box 100a is equal to or greater than a threshold, the water inundation determination unit 432a It may be determined that the upper switch 100 is submerged, and if it is less than the threshold, it may be determined that the pole switch 100 is not submerged. This is because when the pole switch 100 is submerged, it is assumed that the temperature change inside the outer case 100a is smaller than the temperature change outside the outer case 100a.
Here, the temperature outside the outer casing 100a may be obtained from weather information provided by the Meteorological Agency, or may be obtained from a thermometer installed in the control unit 330 . When acquiring from a thermometer installed in the control unit 330, the control unit 330 may include information indicating the temperature outside the outer box 100a in the sensor value notification information and output it to the communication unit 340. . The flood determination unit 432a outputs the acquired control unit ID and the flood determination result to the output unit 433a.
The output unit 433a acquires the control unit ID output by the flood determination unit 432a and the flood determination result. The output unit 433a acquires the pole switch ID associated with the acquired control unit ID from the table 423a stored in the storage unit 420a. The output unit 433a outputs the acquired pole switch ID based on the detection result of the touch operation output by the operation unit 450 when the user presses the pole switch ID of the pole switch 100. and the result of flood determination are displayed on the display unit 440 in association with each other. Further, the output unit 433a may transmit information that associates the pole switch ID and the result of the flood determination from the communication unit 410a to another device.

(Operation of flood detection system)
FIG. 10 is a diagram showing an example of the operation of the inundation determination system of the second embodiment.
(Step S11)
A sensor 310-1 attached to the screw tip of the bolt 300a-1 detects the state of water intrusion inside the outer box 100a-1. Output to 1. The control unit 330-1 acquires the sensor value output by the sensor 310-1, and generates sensor value notification information (hereinafter referred to as “the first 1 sensor value notification information”). Control unit 330-1 outputs the created first sensor value notification information to communication unit 340-1. The communication unit 340-1 acquires the first sensor value notification information output by the control unit 330-1, and transmits the acquired first sensor value notification information to the management device 400a. Specifically, the sensor 310-1 detects the flooded state inside the outer box 100a-1 at a predetermined cycle such as once a day, once a week, or once a month. The sensor value obtained by this is output to control unit 330-1.
(Step S12)
A sensor 310-2 attached to the screw tip of the bolt 300a-2 detects the state of water intrusion inside the outer box 100a-2. Output to 2. The control unit 330-2 acquires the sensor value output by the sensor 310-2, and generates sensor value notification information (hereinafter referred to as “the first 2 sensor value notification information”). Control unit 330-2 outputs the created second sensor value notification information to communication unit 340-2. The communication unit 340-2 acquires the second sensor value notification information output by the control unit 330-2, and transmits the acquired sensor value notification information to the management device 400a. Specifically, the sensor 310-2 detects the flooded state inside the outer box 100a-2 at a predetermined cycle such as once a day, once a week, or once a month. The sensor value obtained by this is output to control unit 330-2.
(Step S13)
A sensor 310-3 attached to the screw tip of the bolt 300a-3 detects the state of water intrusion inside the outer box 100a-3. Output to 3. Control unit 330-3 acquires the sensor value output by sensor 310-3, and generates sensor value notification information (hereinafter referred to as “the first 3 sensor value notification information”). Control unit 330-3 outputs the created third sensor value notification information to communication unit 340-3. Communication unit 340-3 acquires the third sensor value notification information output by control unit 330-3, and transmits the acquired sensor value notification information to management device 400a. Specifically, the sensor 310-3 detects the flooded state inside the outer box 100a-3 at a predetermined cycle such as once a day, once a week, or once a month. The sensor value obtained by this is output to the control unit 330-3.

(Step S14)
The communication unit 410a of the management device 400a receives the first sensor value notification information transmitted by the bolt 300a-1, the second sensor value notification information transmitted by the bolt 300a-2, and the third sensor value notification information transmitted by the bolt 300a-3. and outputs the received first sensor value notification information, second sensor value notification information, and third sensor value notification information to the acquisition unit 431 .
The acquisition unit 431 of the management device 400a acquires the first sensor value notification information, the second sensor value notification information, and the third sensor value notification information received by the communication unit 410a, and acquires the acquired first sensor value notification information. , the second sensor value notification information, and the third sensor value notification information are output to the inundation determination unit 432a.
The inundation determination unit 432a acquires the first sensor value notification information output by the acquisition unit 431, and acquires the control unit ID-1 and the sensor value included in the acquired first sensor value notification information. Based on the obtained sensor value, the flood determination unit 432a determines whether or not the inside of the outer box 100a-1 in which the bolt 300a-1 having the sensor 310-1 that transmitted the sensor value is fitted is flooded. do. The flood determination unit 432a outputs the acquired control unit ID and the flood determination result to the output unit 433a.

The inundation determination unit 432a acquires the second sensor value notification information output by the acquisition unit 431, and acquires the control unit ID-2 and the sensor value included in the acquired second sensor value notification information. Based on the acquired sensor value, the flood determination unit 432a determines whether or not the inside of the outer box 100a-2 in which the bolt 300a-2 having the sensor 310-2 that transmitted the sensor value is fitted is flooded. do. The flood determination unit 432a outputs the acquired control unit ID and the flood determination result to the output unit 433a.
The inundation determination unit 432a acquires the third sensor value notification information output by the acquisition unit 431, and acquires the control unit ID-3 and the sensor value included in the acquired third sensor value notification information. Based on the acquired sensor value, the flood determination unit 432a determines whether or not the inside of the outer box 100a-3 in which the bolt 300a-3 having the sensor 310-3 that transmitted the sensor value is fitted is flooded. do. The flood determination unit 432a outputs the acquired control unit ID and the flood determination result to the output unit 433a.

(Step S15)
The output unit 433a of the management device 400a acquires the control unit ID-1 output by the flood determination unit 432a and the flood determination result. The output unit 433a acquires the pole switch ID-1 stored in association with the acquired control unit ID-1 from the table 423a stored in the storage unit 420a. The output unit 433a associates the acquired pole switch ID-1 with the flood determination result and displays them on the display unit 440. FIG. Further, the output unit 433a may transmit information that associates the pole switch ID-1 with the result of the flood determination from the communication unit 410a to another device.
Further, the output unit 433a of the management device 400a acquires the control unit ID-2 output by the flood determination unit 432a and the flood determination result. The output unit 433a acquires the pole switch ID-2 stored in association with the acquired control unit ID-2 from the table 423a stored in the storage unit 420a. The output unit 433a associates the acquired pole switch ID-2 with the flood determination result and displays them on the display unit 440. FIG. Further, the output unit 433a may transmit information that associates the pole switch ID-2 with the result of the flood determination from the communication unit 410a to another device.
Further, the output unit 433a of the management device 400a acquires the control unit ID-3 output by the flood determination unit 432a and the flood determination result. The output unit 433a acquires the pole switch ID-3 stored in association with the acquired control unit ID-3 from the table 423a stored in the storage unit 420a. The output unit 433a associates the acquired pole switch ID-3 with the flood determination result and displays them on the display unit 440. FIG. Further, the output unit 433a may transmit information that associates the pole switch ID-3 with the result of the flood determination from the communication unit 410a to another device.
In the sequence chart shown in FIG. 10, the management device 400a receives the first sensor value notification information sent by the bolt 300a-1, the second sensor value notification information sent by the bolt 300a-2, and the second sensor value notification information sent by the bolt 300a-3. Regarding the case of determining whether or not the inside of the outer box 100a-1, the outer box 100a-2, and the outer box 100a-3 are flooded after receiving the third sensor value notification information Although described, it is not limited to this example. For example, the management device 400a determines whether or not the inside of the outer box 100a-1 is flooded immediately after receiving the first sensor value notification information transmitted by the bolt 300a-1, and Immediately after receiving the second sensor value notification information, it is determined whether or not the inside of the outer casing 100a-2 is flooded, and immediately after receiving the third sensor value notification information transmitted by the bolt 300a-3, the outer casing 100a It may be determined whether or not the interior of -3 is flooded.

In the above-described second embodiment, the pole switch 100 has been described, but the present invention is not limited to this example and can be applied to any switch. In the case of a switch, it is possible to eliminate the trouble of going to the place where the switch is installed and the trouble of irradiating the pole switch 100 with ultrasonic waves. By using the pole switch 100, it is possible to eliminate the trouble of going to the place where the pole switch 100 is installed and the trouble of irradiating ultrasonic waves above the utility pole 102 on which the pole switch 100 is installed. can.
In the above-described second embodiment, the case where the bolt 300a is fitted as an airtight plug into the gas inlet at the bottom of the outer case 100a is described, but the present invention is not limited to this example. For example, it may be a screw hole other than the gas inlet penetrating the outer case 100a. If a screw hole other than the gas inlet penetrating the outer casing 100a is used, it is necessary to make a new through hole. , it can be determined whether the inside of the pole switch 100 is flooded.
In the above-described second embodiment, the case where the sensor value notification information includes the control unit ID and the sensor value has been described, but the present invention is not limited to this example. For example, a communication unit ID may be included instead of the control unit ID. In this case, the communication unit ID and the pole switch ID are associated and stored in the management device 400a. Also, the pole switch ID may be included instead of the control unit ID. By configuring in this way, the process of deriving the pole switch ID from the control unit ID can be omitted.
In the above-described second embodiment, the case where the water intrusion detection system includes bolts 300a-1, 300a-2, and 300a-3 has been described, but the present invention is not limited to this example. For example, the number of bolts 300a may be one, two, or four or more.
In the second embodiment described above, the temperature outside the outer casing 100a is obtained from the weather information provided by the Meteorological Agency, or is obtained from the thermometer installed in the control unit 330. has been described, but the present invention is not limited to this example. For example, a sensor 310 may be installed on the bolt 300a so that the temperature outside the outer casing 100a can also be measured. By configuring in this way, the temperature outside the outer case 100a can be obtained from the weather information provided by the Meteorological Agency, or the temperature outside the outer case 100a can be obtained from the thermometer installed in the communication device 200. The external temperature of the outer case 100a can be obtained without the need. In this case, the sensor 310 outputs the internal temperature and the external temperature of the outer box 100a to the communication unit 340 as sensor values.

In the above-described second embodiment, as an example of the sensor, the case where the temperature sensor is fitted in the bolt body B has been described, but the present invention is not limited to this example. For example, a short circuit sensor may be embedded in the bolt body B. In this case, information indicating the short circuit detected by the short circuit sensor is transmitted to control unit 330 as sensor information.
Also, for example, a humidity sensor may be fitted into the bolt body B. In this case, information indicating the humidity detected by the humidity sensor is transmitted to control unit 330 as sensor information. Based on the humidity inside the outer box 100a acquired as a sensor value, the inundation determination unit 432a detects that the difference between the humidity inside the outer box 100a and the humidity outside the outer box 100a is equal to or greater than a threshold. It may be determined that it is submerged, and if it is less than the threshold, it may be determined that the pole switch 100 is not submerged. This is because when the pole switch 100 is submerged, it is assumed that the change in humidity inside the outer box 100a is smaller than the change in humidity outside the outer box 100a.
Here, the humidity outside the outer casing 100a may be obtained from weather information provided by the Meteorological Agency, or may be obtained from a thermometer installed with a hygrometer installed in the control unit 330 . Further, a sensor 310 may be installed on the bolt 300a so as to measure the humidity outside the outer casing 100a. By configuring in this way, the humidity outside the outer box 100a can be obtained from the weather information provided by the Meteorological Agency, or the humidity outside the outer box 100a can be obtained from the hygrometer installed in the control unit 330. Therefore, the humidity outside the outer case 100a can be obtained. In this case, the sensor 310 outputs the humidity inside and outside the outer box 100a to the communication unit 340 as sensor values. When acquiring from a hygrometer installed in the control unit 330, the control unit 330 may include information indicating the humidity outside the outer box 100a in the sensor value notification information and transmit it.

According to the flood detection system of the second embodiment, the bolt 300 a having the sensor 310 , the bolt body B, the control section 330 and the communication section 340 is the outer box of the pole switch 100 . It fits into the lower gas inlet of 100a. A sensor value obtained by the sensor 310 detecting the state of water intrusion inside the outer casing 100a is output to the control unit 330 via the cable 320a. The control unit 330 acquires the sensor value output by the sensor 310 and creates sensor value notification information including the acquired sensor value and the control unit ID of the control unit 330 . Control unit 330 outputs the created sensor value notification information to communication unit 340 via cable 320b. The communication unit 340 acquires the sensor value notification information output by the control unit 330, and transmits the acquired sensor value notification information to the management device 400a.
The management device 400a receives the sensor value notification information transmitted by the bolt 300a, and based on the received sensor value notification information, detects the pillar inside the outer box 100a in which the bolt 300a having the sensor 310 that transmitted the sensor value is fitted. It is determined whether or not the upper switch 100 is submerged.
Conventionally, since a huge number of pole switches 100 are installed in the distribution system, an ultrasonic water ingress detection device that requires various functions is installed for each pole switch 100. However, it was difficult to manage whether or not it was flooded remotely.
In this embodiment, by configuring in this way, it is possible to remotely detect the flooding of the pole switch 100 without having to go to the installation location of the pole switch 100 . In addition, by determining whether or not the pole switch 100 inside the outer box 100a is flooded based on the sensor value detected by the sensor 310, compared to the determination using ultrasonic waves , even a non-skilled engineer can judge whether or not there is water intrusion. In addition, since the work of determining whether or not the pole switch 100 is submerged is simplified, installation of each pole switch 100 can be facilitated.
Furthermore, by providing the bolt 300a with the control unit 330 and the communication unit 340, the trouble of installing the communication device 200 can be saved as compared with the first embodiment.

<Configuration example>
As one configuration example, a bolt that is fitted into a screw hole penetrating the detection target space in the switch (in the embodiment, the pole switch 100) from the outside, detects the flooded state of the detection target space. A sensor is provided and the bolt has the sensor in the threaded tip portion of the bolt.
As one configuration example, the sensor detects humidity inside and outside the switch.
As one configuration example, the switch is a pole switch.
In one configuration, the threaded hole is an airtight plug.

Although the embodiments have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, changes, and combinations can be made without departing from the scope of the invention. These embodiments are included in the scope and gist of the invention, and at the same time, are included in the scope of the invention described in the claims and equivalents thereof.

Note that the management device 400 and the management device 400a described above may be realized by a computer. In that case, a program for realizing the function of each functional block is recorded in a computer-readable recording medium. The program recorded on this recording medium may be loaded into the computer system and executed by the CPU. The "computer system" here includes hardware such as an OS (Operating System) and peripheral devices.
A "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM. A "computer-readable recording medium" includes a storage device such as a hard disk built into a computer system.

Furthermore, the "computer-readable recording medium" may include those that dynamically retain the program for a short period of time. For a short period of time, a program is dynamically stored in a communication line for transmitting a program via a network such as the Internet or a communication line such as a telephone line.
In addition, the "computer-readable recording medium" may also include a medium that retains the program for a certain period of time, such as a volatile memory inside a computer system that serves as a server or client. Further, the program may be for realizing part of the functions described above. Moreover, the above program may be one capable of realizing the functions described above in combination with a program already recorded in a computer system. Moreover, the program may be implemented using a programmable logic device. A programmable logic device is, for example, an FPGA (Field Programmable Gate Array).

The management device 400 and the management device 400a described above each have a computer therein. The process of each process performed by the management device 400 and the management device 400a described above is stored in a computer-readable recording medium in the form of a program. is done.
Here, the computer-readable recording medium includes a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, and the like. Alternatively, the computer program may be distributed to a computer via a communication line, and the computer receiving the distribution may execute the program.
Further, the program may be for realizing part of the functions described above.
Further, it may be a so-called difference file (difference program) that can realize the above-described functions in combination with a program already recorded in the computer system.

50... Network 100... Pole switch 100a... Outer box (case) 102... Utility pole 104... Cross arm 106a... High voltage distribution lines 106a, 106b... High voltage distribution lines 200, 200-1, 200-2 , 200-3... communication device, 300, 300-1, 300-2, 300-3, 300a, 300a-1, 300a-2, 300a-3... bolt, 310, 310-1, 310-2, 310- 3... sensors, 320, 320a, 320b... cables, 330, 330-1, 330-2, 330-3... control units, 340, 340-1, 340-2, 340-3... communication units, 400, 400a... Management apparatus 400, 410, 410a... Communication unit 420, 420a... Storage unit 421... Program 422, 422a... Application 423, 423a... Table 430, 430a... Information processing unit 440... Display unit 450... Operation Part 431... Acquisition part 432, 432a... Flood determination part 433, 433a... Output part 460... Bus line

Claims (6)

A bolt that fits into a screw hole that penetrates from the outside to a detection target space in the switch,
a sensor that detects the state of flooding in the detection target space;
The bolt has the sensor at the screw tip portion of the bolt , and the sensor attached to the screw tip portion is installed in the outer case of the switch at a gas inlet at the bottom of the detection target space. It is fitted so that it is exposed ,
Volt, wherein the sensor is a short circuit sensor. The bolt according to claim 1, further comprising a communication unit that transmits information indicating the state of flooding detected by the sensor to a management device that manages the inside of the switch. The bolt according to claim 1 or 2, wherein the switch is a pole switch. The bolt according to any one of claims 1 to 3, wherein said threaded hole is an airtight plug. a bolt fitted into a screw hole penetrating the detection target space, the bolt being provided with a sensor for detecting the state of flooding in the detection target space in the switch from the outside;
a communication device that transmits information indicating the state of flooding detected by the sensor to a management device that manages the inside of the switch;
a management device that determines whether or not the inside of the switch is flooded based on the information indicating the state of flooding transmitted by the communication device;
with
The sensor is a short-circuit sensor and is attached to the threaded portion of the bolt,
The water intrusion detection system, wherein the bolt is fitted in a gas inlet at the bottom of the detection target space , and the sensor is exposed inside an outer case of the switch . a step of transmitting information indicating the state of flooding detected by a sensor provided in a bolt fitted in a screw hole penetrating a detection target space in the switch from the outside to a management device that manages the inside of the switch;
a step of determining whether or not the inside of the switch is flooded based on the information indicating the state of flooding transmitted in the transmitting step;
has
The bolt has the sensor at the screw tip portion of the bolt , and the sensor attached to the screw tip portion is installed in the outer case of the switch at a gas inlet at the bottom of the detection target space. It is fitted so that it is exposed ,
The water intrusion detection method, wherein the sensor is a short-circuit sensor.

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