Title of the invention: Optical fiber sensing system, optical fiber sensing device, and power failure detection method
Technical field
[0001]
This disclosure relates to an optical fiber sensing system, an optical fiber sensing device, and a power failure detection method.
Background technology
[0002]
In the event of a disaster such as an earthquake, various damages may occur. In addition, when damage occurs, it is necessary to restore it to the state before the damage, so it is necessary to detect whether or not the damage has actually occurred within the range where the disaster occurred. For example, Patent Document 1 describes a technique for detecting a breakage of a river embankment by using an optical fiber as a sensor.
Prior art literature
Patent documents
[0003]
Patent Document 1: Japanese Unexamined Patent Publication No. 2001-249835
Outline of the invention
Problems to be solved by the invention
[0004]
By the way, in the event of a disaster, there is a risk of a power outage. When a power outage occurs, it is necessary to recover, but it was difficult to actually grasp whether or not a power outage occurred.
[0005]
Therefore, an object of the present disclosure is to solve the above-mentioned problems and to provide an optical fiber sensing system, an optical fiber sensing device, and a power failure detection method capable of detecting a power failure in the event of a disaster.
Means to solve problems
[0006]
The optical fiber sensing system according to one aspect is
Optical fiber and
A receiving unit that receives an optical signal including an environmental pattern indicating an environmental state in the vicinity of the optical fiber from the optical fiber.
A detector that detects the occurrence of a power outage based on the change in the environmental pattern,
Equipped with.
[0007]
The optical fiber sensing device according to one aspect is
A receiving unit that receives an optical signal including an environmental pattern indicating an environmental state in the vicinity of the optical fiber from the optical fiber.
A detector that detects the occurrence of a power outage based on the change in the environmental pattern,
Equipped with.
[0008]
The power failure detection method according to one aspect is
It is a power failure detection method using an optical fiber sensing system.
A reception step of receiving an optical signal including an environmental pattern indicating an environmental state in the vicinity of the optical fiber from the optical fiber, and
A detection step to detect the occurrence of a power outage based on the change in the environmental pattern,
including.
The invention's effect
[0009]
According to the above aspect, it is possible to provide an optical fiber sensing system, an optical fiber sensing device, and a power failure detection method that can detect a power failure when a disaster occurs.
A brief description of the drawing
[0010]
FIG. 1 is a diagram showing a configuration example of an optical fiber sensing system according to a first embodiment.
FIG. 2 is a diagram showing an example of a method in which the detection unit according to the first embodiment detects the occurrence of a power failure.
FIG. 3 is a diagram showing an example of a method in which the detection unit according to the first embodiment detects the occurrence of a power failure.
FIG. 4 is a flow chart showing an operation example of the optical fiber sensing system according to the first embodiment.
FIG. 5 is a diagram showing an example of a method in which a detection unit according to a second embodiment identifies a power failure occurrence region.
FIG. 6 is a diagram showing an example of a correspondence table stored when the detection unit according to the second embodiment performs the method of FIG.
FIG. 7 is a diagram showing an example of a method in which a detection unit according to a second embodiment identifies a power failure occurrence region.
FIG. 8 is a diagram showing an example of a correspondence table stored when the detection unit according to the second embodiment performs the method of FIG. 7.
FIG. 9 is a diagram showing an example of a method in which a detection unit according to a second embodiment identifies a power failure occurrence region.
FIG. 10 is a diagram showing an example of a correspondence table stored when the detection unit according to the second embodiment performs the method of FIG. 9.
FIG. 11 is a flow chart showing an operation example of the optical fiber sensing system according to the second embodiment.
FIG. 12 is a diagram showing a configuration example of an optical fiber sensing system according to a third embodiment.
FIG. 13 is a diagram showing an example of a GUI screen displayed on the display unit by the notification unit according to the third embodiment.
FIG. 14 is a diagram showing an example of a GUI screen displayed on the display unit by the notification unit according to the third embodiment.
FIG. 15 is a diagram showing an example of a GUI screen displayed on the display unit by the notification unit according to the third embodiment.
FIG. 16 is a diagram showing an example of a GUI screen displayed on the display unit by the notification unit according to the third embodiment.
FIG. 17 is a flow chart showing an operation example of the optical fiber sensing system according to the third embodiment.
FIG. 18 is a diagram showing a configuration example of an optical fiber sensing system according to another embodiment.
FIG. 19 is a block diagram showing an example of a hardware configuration of a computer that realizes an optical fiber sensing device according to an embodiment.
Embodiment for carrying out the invention
[0011]
Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The following descriptions and drawings have been omitted or simplified as appropriate for the sake of clarification of the explanation. Further, in each of the following drawings, the same elements are designated by the same reference numerals, and duplicate explanations are omitted as necessary.
[0012]

First, a configuration example of the optical fiber sensing system according to the first embodiment will be described with reference to FIG.
[0013]
As shown in FIG. 1, the optical fiber sensing system according to the first embodiment includes an optical fiber 10 and an optical fiber sensing device 20. Further, the optical fiber sensing device 20 includes a receiving unit 21 and a detecting unit 22.
[0014]
One end of the optical fiber 10 is connected to the optical fiber sensing device 20. The optical fiber 10 may be an optical fiber dedicated to sensing, or an optical fiber for both communication and sensing. When the optical fiber 10 is an optical fiber for both communication and sensing, the optical signal for sensing is demultiplexed by a filter so that only the optical signal for sensing can be received by the optical fiber sensing device 20.
[0015]
The receiving unit 21 receives an optical signal (optical signal for sensing; hereinafter the same) from the optical fiber 10. For example, the receiving unit 21 receives the pulsed light incident on the optical fiber 10 and the backward scattered light generated by the pulsed light being transmitted through the optical fiber 10 as an optical signal. Alternatively, the receiving unit 21 receives the pulsed light incident on the optical fiber 10 by the device arranged facing the optical fiber sensing device 20 as an optical signal.
[0016]
Here, the electronic device 30 is arranged in the vicinity of the optical fiber 10. The electronic device 30 is a device whose operating state changes during a power failure. For example, the electronic device 30 is a device that operates except during a power failure and stops operating during a power failure. Examples of the electronic device 30 that operates except during a power failure include, but are not limited to, refrigerators, air conditioning equipment, factory equipment, and the like. Alternatively, the electronic device 30 is a device that stops operating except during a power failure and operates during a power failure. An emergency power supply or the like can be considered as an example of the electronic device 30 that operates in the event of a power failure, but the present invention is not limited to this.
[0017]
When the electronic device 30 as described above is arranged in the vicinity of the optical fiber 10, the state of the environment in the vicinity of the optical fiber 10 changes in the event of a power failure.
For example, the electronic device 30 that operates except during a power failure stops operating during a power failure. Then, in the vicinity of the optical fiber 10, due to the stoppage of the operation of the electronic device 30, changes in the environment such as stoppage of vibration (including sound; hereinafter the same), temperature decrease or increase, and uniform temperature distribution. Occurs.
Further, the electronic device 30 that stops operating except during a power failure operates during a power failure. Then, in the vicinity of the optical fiber 10, changes in the environment such as vibration, temperature rise, and uneven temperature distribution occur due to the operation of the electronic device 30.
[0018]
When at least one of the vibration change and the temperature change occurs in the vicinity of the optical fiber 10, the optical signal transmitted through the optical fiber 10 has a wavelength corresponding to at least one of the vibration change and the temperature change generated in the vicinity of the optical fiber 10. Change. Therefore, the optical signal received by the receiving unit 21 includes an environmental pattern indicating an environmental state such as vibration and temperature in the vicinity of the optical fiber 10. It should be noted that this environmental pattern may indicate at least one of vibration and temperature in the vicinity of the optical fiber 10.
[0019]
Therefore, the detection unit 22 analyzes the change in the environmental pattern included in the optical signal received by the receiving unit 21, and the environmental state changes in the vicinity of the optical fiber 10, that is, a power failure occurs. Can be detected.
[0020]
Therefore, in the first embodiment, the detection unit 22 detects the occurrence of a power failure based on the change in the environmental pattern included in the optical signal received by the reception unit 21.
[0021]
The detection unit 22 can also specify the position where the environmental pattern has changed (distance of the optical fiber 10 from the optical fiber sensing device 20) based on the optical signal received by the receiving unit 21. For example, when the receiving unit 21 receives the backward scattered light from the optical fiber 10 as an optical signal, the detecting unit 22 sets the time when the receiving unit 21 incidents the pulsed light on the optical fiber 10 and the changed environmental pattern. It is possible to identify the position where the environmental pattern has changed based on the time difference between the time when the included optical signal is received and the time difference. Alternatively, the detection unit 22 compares the vibration intensity of the vibration detected at each distance of the optical fiber 10 from the optical fiber sensing device 20 and includes the changed environmental pattern, and the vibration intensity is the highest. A position at a large distance can be specified as a position where the environmental pattern has changed. Further, the detection unit 22 can specify the position where the environmental pattern has changed based on the intensity of the optical signal including the changed environmental pattern. For example, the detection unit 22 specifies a position farther from the reception unit 21 as a position where the environment pattern changes as the intensity of the received optical signal becomes smaller.
[0022]
Hereinafter, an example of a method in which the detection unit 22 detects the occurrence of a power failure based on the change in the environmental pattern included in the optical signal received by the reception unit 21 will be described.
[0023]
(A1) Method A1
First, method A1 will be described.
In the method A1, it is assumed that the receiving unit 21 receives the backward scattered light from the optical fiber 10 as an optical signal, and the time when the receiving unit 21 incidents the pulsed light and the backward scattered light with respect to the pulsed light are optical signals. Let Δt be the time difference between the time received by the receiving unit 21 and the time difference.
[0024]
The receiving unit 21 incidents pulsed light on the optical fiber 10 at time t1 and t2, and receives an optical signal from the optical fiber 10 at time t1 + Δt and t2 + Δt.
The detection unit 22 compares the waveform patterns of the optical signals received by the reception unit 21 at time t1 + Δt, t2 + Δt, and when the change in the waveform pattern indicates a change in the environment due to a power failure in the vicinity of the optical fiber 10, the environment. It is judged that the pattern has changed and a power failure has occurred. The detection unit 22 can detect at least one of the vibration change amount and the temperature change amount from the change amount of the environmental pattern.
[0025]
(A2) Method A2
Next, method A2 will be described.
In the method A2, the detection unit 22 stores the waveform pattern of the optical signal in advance. At this time, for example, if the electronic device 30 is a device that operates except during a power failure, the detection unit 22 stores in advance the waveform pattern of the optical signal when the electronic device 30 is operating. The waveform pattern of the optical signal when the electronic device 30 is operating corresponds to, for example, the vibration generated by the operation of the electronic device 30, the temperature adjusted by the temperature control function of the electronic device 30, and the like.
On the other hand, if the electronic device 30 is a device that operates at the time of a power failure, the detection unit 22 stores in advance the waveform pattern of the optical signal when the electronic device 30 is stopped.
[0026]
The detection unit 22 compares the waveform pattern of the optical signal received by the reception unit 21 with the waveform pattern stored in advance, and when the pattern changes to a pattern that does not include the waveform pattern stored in advance, the environment pattern changes. , Judge that a power outage has occurred. The detection unit 22 can detect at least one of the vibration change amount and the temperature change amount from the change amount of the environmental pattern.
[0027] (A3) Method A3
Next, the method A3 will be described.
Method A3 is an example in which an electronic device 30 which is an air conditioner is arranged in the vicinity of the optical fiber 10. Here, the electronic device 30 can keep the temperature in the vicinity of the optical fiber constant by the temperature control function. When the operation of the electronic device 30 is stopped, the vibration transmitted from the electronic device 30 to the optical fiber 10 is stopped, and the temperature control is stopped. Further, the electronic device 30 is stopped when the temperature control is unnecessary even when a power failure does not occur.
[0028]
In method A3, the detection unit 22 detects a power failure based on the change in vibration and temperature of the optical fiber included in the environmental pattern. Specifically, the detection unit 22 determines that a power failure has occurred when the detection unit 22 detects the stop of vibration due to the stop of operation of the electronic device 30 and the amount of change in temperature is within a predetermined range. .. On the other hand, even when the detection unit 22 detects the stop of vibration due to the stop of operation of the electronic device 30, if the amount of change in temperature is less than a predetermined range, the temperature adjustment is unnecessary. It is determined that the electronic device 30 has been stopped, and it is not determined that a power failure has occurred.
[0029]
In the method A3, for example, at least one of the above-mentioned methods A1 and A2 is used for detecting the stop of vibration and the amount of change in temperature.
At this time, the detection unit 22 may determine that a power failure has occurred when the position where the environmental pattern has changed due to the change in vibration and the position where the environmental pattern has changed due to the change in temperature match.
In the method A3, since the detection unit 22 detects the power failure based on both the change in vibration and the change in temperature, the power failure can be detected more accurately.
[0030]
(A4) Method A4
Next, the method A4 will be described.
Method A4 is an example in which a plurality of electronic devices 30 are arranged in the vicinity of the optical fiber 10. Here, as shown in FIG. 2, in the vicinity of the optical fiber 10, there are three electronic devices 30: an electronic device 30a which is a refrigerator, an electronic device 30b which is an air conditioning facility, and an electronic device 30c which is a production device. Take the case of being arranged as an example.
[0031]
In the method A4, first, the detection unit 22 determines whether or not the environmental patterns of the three electronic devices 30a to 30c arranged in the vicinity of the optical fiber 10 have changed. The method for specifying the positions of the electronic devices 30a to 30c (distance of the optical fiber 10 from the optical fiber sensing device 20) in which the environmental pattern has changed when the environmental pattern changes is as described above.
[0032]
Then, the detection unit 22 determines that a power failure has occurred when the changes in the three environmental patterns satisfy the predetermined conditions.
For example, the detection unit 22 determines that a power failure has occurred when the environmental patterns of a predetermined number (for example, two) or more or a predetermined ratio (for example, 50%) or more among the three environmental patterns change.
Alternatively, the detection unit 22 determines that a power failure has occurred when all three environmental patterns have changed.
[0033]
Alternatively, the detection unit 22 determines that a power failure has occurred when the environmental pattern of the electronic device 30 having the higher priority among the electronic devices 30a to 30c changes. For example, since the electronic devices 30b and 30c are air-conditioning equipment and production equipment, respectively, there is a possibility that the operation will be stopped even when the power failure occurs. For example, the production equipment is stopped by the end of the operating time of a factory or the like. On the other hand, the electronic device 30a, which is a refrigerator, is unlikely to stop operating except during a power failure, and therefore has a high priority. In this case, the detection unit 22 determines that a power failure has occurred if the environmental pattern of the electronic device 30a having a high priority has changed, even if the environmental pattern of any of the electronic devices 30b and 30c has not changed. do. On the contrary, the detection unit 22 determines that a power failure has occurred if the environmental pattern of the electronic device 30b or 30c has changed but the environmental pattern of the electronic device 30a having a high priority has not changed. do not do.
[0034]
As described above, the method A4 is one for detecting the occurrence of a power failure depending on whether or not the change in the environmental pattern of each of the plurality of electronic devices 30 arranged in the vicinity of the optical fiber 10 satisfies a predetermined condition. Compared with the method of detecting the occurrence of a power failure based on the change in the environmental pattern of the electronic device 30, the occurrence of a power failure can be detected with higher accuracy.
[0035]
As mentioned above, electronic devices such as air conditioners and production devices may stop operating even when there is a power outage. Therefore, such an electronic device may be used as the electronic device 30 only during the operating time zone. In other time zones, an electronic device such as a refrigerator, which is unlikely to stop operation except during a power failure, or an electronic device such as an emergency power supply that operates during a power failure may be used as the electronic device 30.
[0036]
(A5) Method A5
Next, the method A4 will be described.
Method A4 is an example in which an electronic device 30 that operates during a power failure and an electronic device 30 that operates during a power failure are arranged in the vicinity of the optical fiber 10. Here, as shown in FIG. 3, as an electronic device 30 that operates during a power failure, an electronic device 30b that is an emergency power source is arranged in the vicinity of the optical fiber 10, and as an electronic device 30 that operates during a power failure. The case where the electronic device 30a, which is a refrigerator, is arranged is taken as an example.
[0037]
In the method A5, the detection unit 22 determines whether or not the environmental pattern of the electronic device 30b, which is an emergency power source, arranged in the vicinity of the optical fiber 10 has changed, and if the environmental pattern changes, a power failure occurs. Judge that it has occurred.
[0038]
Further, when the electronic device 30b is operated due to the occurrence of a power failure, power is supplied from the electronic device 30b to the electronic device 30a which is a refrigerator. Therefore, the environmental pattern of the electronic device 30a changes temporarily due to the occurrence of a power failure, but then returns to the original pattern.
[0039]
Therefore, the detection unit 22 determines that the power is normally supplied from the electronic device 30b, which is an emergency power source, to the electronic device 30a, which is a refrigerator.
Therefore, the detection unit 22 can not only determine that a power failure has occurred, but also determine that the power supply from the electronic device 30b, which is an emergency power source, is normally performed.
[0040]
Subsequently, with reference to FIG. 4, an operation example of the optical fiber sensing system according to the first embodiment will be described.
As shown in FIG. 4, the receiving unit 21 receives an optical signal from the optical fiber 10 including an environmental pattern indicating the state of the environment in the vicinity of the optical fiber 10 (step S11).
[0041]
Subsequently, the detection unit 22 detects the occurrence of a power failure based on the change in the environmental pattern included in the optical signal received by the reception unit 21 (step S12). This detection may be performed, for example, by using any of the above-mentioned methods A1 to A5.
[0042]
As described above, according to the first embodiment, an optical signal including an environmental pattern indicating an environmental state in the vicinity of the optical fiber 10 is received from the optical fiber 10. The detection unit 22 detects the occurrence of a power failure based on the change in the environmental pattern included in the optical signal. This makes it possible to detect a power outage when a disaster occurs.
[0043]

The optical fiber sensing system according to the second embodiment has the same configuration itself as the configuration of the second embodiment described above, but has an expanded function of the detection unit 22.
[0044]
As described above, the detection unit 22 can specify the position where the environmental pattern has changed (distance of the optical fiber 10 from the optical fiber sensing device 20) based on the optical signal received by the reception unit 21. ..
[0045]
Therefore, when it is determined that a power failure has occurred, the detection unit 22 identifies the power failure occurrence position, which is the position where the power failure occurred, and the power failure occurrence area, which is the area where the power failure occurred, based on the position where the environmental pattern changes. ..
[0046]
Regarding the power failure occurrence position, the detection unit 22 specifies the position where the environmental pattern has changed as the power failure occurrence position.
Therefore, in the following, an example of a method of specifying the power failure occurrence region in the detection unit 22 based on the position where the environmental pattern has changed will be described.
[0047]
(B1) Method B1
First, the method B1 will be described with reference to FIGS. 5 and 6.
In the example of FIG. 5, the area where the optical fiber 10 is laid is divided into four areas A to D. Further, electronic devices 30a to 30d are arranged in the areas A to D, respectively.
[0048]
In the case of the example of FIG. 5, as shown in FIG. 6, the detection unit 22 previously prepares a correspondence table in which the distance of the optical fiber 10 from the optical fiber sensing device 20 and the region corresponding to the distance are associated with each other. Remember.
[0049]
For example, when the environmental pattern of the electronic device 30a changes, the distance of the optical fiber 10 from the optical fiber sensing device 20 to the position where the environmental pattern changes is within the range of A to B [km]. In this case, the detection unit 22 identifies the area A as a power failure occurrence area with reference to the corresponding table of FIG.
[0050]
(B2) Method B2
Subsequently, the method B2 will be described with reference to FIGS. 7 and 8.
The unit of the area to be divided may be arbitrary. Method B2 is an example of dividing an area into building units, for example, as shown in FIG. 7.
[0051]
In the example of FIG. 7, the area where the optical fiber 10 is laid is divided into three buildings A to C. Further, the electronic devices 30a and 30b are arranged in the building A, the electronic devices 30c are arranged in the building B, and the electronic devices 30d are arranged in the building C. An example of the correspondence table in the case of the example of FIG. 7 is shown in FIG.
[0052]
In the example of FIG. 7, two electronic devices 30a and 30b are arranged in the building A. Here, it is assumed that the detection unit 22 knows in advance that the two electronic devices 30a and 30b are arranged in the building A. Therefore, when detecting the occurrence of a power failure in the building A, the detection unit 22 uses the above-mentioned method A3. That is, the detection unit 22 determines whether or not the environmental patterns of the two electronic devices 30a and 30b have changed, and if the changes in the two environmental patterns satisfy a predetermined condition, it is determined that a power failure has occurred. do.
[0053]
(B3) Method B3
Subsequently, the method B3 will be described with reference to FIGS. 9 and 10.
The above-mentioned methods B1 and B2 are examples in which the optical fiber 10 is laid in a straight line. Method B3 is an example in which, for example, as shown in FIG. 9, the optical fiber 10 is laid while being bent or folded in the middle. An example of the correspondence table in the case of the example of FIG. 9 is shown in FIG. The method B3 is different from the above-mentioned methods B1 and B2 in the method of laying the optical fiber 10, but the method itself for specifying the power failure occurrence region may be the same as the above-mentioned methods B1 and B2.
[0054]
Subsequently, with reference to FIG. 11, an operation example of the optical fiber sensing system according to the second embodiment will be described.
As shown in FIG. 11, first, steps S21 to S22 similar to steps S11 to S12 in FIG. 4 are performed.
[0055]
When the detection unit 22 determines that a power failure has occurred in step S22 (Yes in step S22), the detection unit 22 subsequently identifies a position where the environmental pattern has changed, and further, a power failure has occurred based on the position where the environmental pattern has changed. The position and the power failure occurrence area are specified (step S23). For example, the power failure occurrence position may be specified as a position where the environmental pattern has changed. Further, the power failure occurrence region may be specified by using any of the above-mentioned methods B1 to B3.
[0056]
As described above, according to the second embodiment, when it is determined that a power failure has occurred, the detection unit 22 specifies the power failure occurrence position and the power failure occurrence area based on the position where the environmental pattern has changed. As a result, not only the occurrence of a power failure can be detected, but also the power failure occurrence position and the power failure occurrence area where the power failure has occurred can be detected.
Other effects are the same as those in the first embodiment described above.
[0057]

Subsequently, with reference to FIG. 12, a configuration example of the optical fiber sensing system according to the third embodiment will be described. Nana As in FIG. 7, FIG. 12 is an example in which the area where the optical fiber 10 is laid is divided into three buildings A to C.
[0058]
As shown in FIG. 12, the optical fiber sensing system according to the third embodiment has an additional display unit 40 as compared with the configurations of the first and second embodiments described above, and the optical fiber sensing. The difference is that the notification unit 23 is added to the device 20.
The display unit 40 is installed in a communication station building, an operation center, or the like, and is a display, a monitor, or the like that displays various information.
[0059]
The notification unit 23 stores in advance the information indicating the position where the optical fiber 10 is laid and the map information in association with each other. When the detection unit 22 determines that a power failure has occurred, the notification unit 23 superimposes at least one of the information of the power failure occurrence position and the power failure occurrence area specified by the detection unit 22 on the map information GUI (Graphical User Interface). ) The screen is displayed on the display unit 40.
[0060]
Hereinafter, an example of a GUI screen to be displayed on the display unit 40 in the notification unit 23 will be described. The map on the GUI screen described below can be enlarged or reduced as needed.
[0061]
(C1) GUI screen C1
As shown in FIG. 13, the GUI screen C1 is a screen in which the power failure occurrence position is superimposed on the map. In FIG. 13, the power failure occurrence position is represented by a black circle on the map.
[0062]
(C2) GUI screen C2
As shown in FIG. 14, the GUI screen C2 is a screen in which the power failure occurrence position and the power failure occurrence area are superimposed on the map. In FIG. 14, the power failure occurrence position is represented by a black circle on the map. Further, the power failure occurrence area is represented on the map as a circle including the power failure occurrence position. In FIG. 14, the power failure occurrence position and the power failure occurrence area are superimposed on the map, but the power failure occurrence position may not be superimposed and only the power failure occurrence area may be superimposed.
[0063]
(C3) GUI screen C3
As shown in FIG. 15, the GUI screen C3 is a screen in which the power failure occurrence position and the power failure occurrence area are superimposed on the map. In FIG. 15, the map is divided into five areas A to E according to the classification of cities, towns and villages. The location of the power outage is indicated by a black circle on the map. Further, the power failure occurrence area is the area A, C to E. However, the regions A, D, and E in which the power failure is detected in the electronic devices 30 having a number equal to or larger than the threshold value are highlighted by diagonal lines. Since the number of installed electronic devices 30 is different for each area A to E, the threshold value for determining the area to be emphasized may be set for each area A to E. In addition, all power outage occurrence areas may be emphasized. Further, in FIG. 15, the power failure occurrence position and the power failure occurrence area are superimposed on the map, but the power failure occurrence position may not be superimposed and only the power failure occurrence area may be superimposed.
[0064]
(C4) GUI screen C4
As shown in FIG. 16, the GUI screen C4 is a screen in which the power supply lines L1 and L2 connected to the power failure occurrence position and the power failure occurrence position are superimposed on the map. In FIG. 16, the power failure occurrence position is represented by a black circle on the map. Further, the power feeding lines L1 and L2 are represented by lines on the map. At this time, the notification unit 23 identifies the power supply line L1 as the power supply line having the highest priority to be restored among the power supply lines L1 and L2, based on the power failure occurrence position and the result of superimposing the power supply lines L1 and L2 on the map. ing. For example, when the number of power failure occurrence positions detected around the power supply line L1 is larger than the number of power failure occurrence positions detected around the power supply line L2, the notification unit 23 has a priority to restore the power supply line L1. Is specified as a high power supply line. Therefore, in FIG. 16, the feeding line L2 is represented by a broken line, while the feeding line L1 is highlighted by a solid line.
[0065]
Subsequently, with reference to FIG. 17, an operation example of the optical fiber sensing system according to the third embodiment will be described.
As shown in FIG. 17, first, steps S31 to S33 similar to steps S21 to S23 in FIG. 11 are performed.
[0066]
Subsequently, the notification unit 23 superimposes information on at least one of the power failure occurrence position and the power failure occurrence area specified by the detection unit 22 on the map information and displays it on the display unit 40 (step S34). This display may be performed by, for example, the above-mentioned GUI screens C1 to C4.
[0067]
As described above, according to the third embodiment, when the detection unit 22 determines that a power failure has occurred, the notification unit 23 provides information on at least one of the power failure occurrence position and the power failure occurrence region specified by the detection unit 22. It is superimposed on the map information and displayed on the display unit 40. As a result, at least one of the power failure occurrence position and the power failure occurrence area can be notified to the communication station building, the operation center, etc. in which the display unit 40 is installed. Here, it is considered that the electric power company that supplies the power supply line is often different for each area. Therefore, if the power failure occurrence area can be notified, it is possible to promptly identify the electric power company that supplies the power supply line to the power failure occurrence area and promptly request the electric power company to recover.
Other effects are the same as in the second embodiment described above.
[0068]
The notification unit 23 not only displays the power failure occurrence position and the power failure occurrence area on the display unit 40, but also informs the communication station building, the operation center, etc. of the power failure occurrence position and the power failure occurrence area by telephone, e-mail, or the like. May be notified.
[0069]

In the above-described embodiment, the optical fiber sensing system provided with only one optical fiber sensing device 20 has been described, but the present invention is not limited to this. The optical fiber sensing system may be provided with a plurality of optical fiber sensing devices 20. FIG. 18 shows an example of an optical fiber sensing system provided with two optical fiber sensing devices 20X and 20Y similar to the optical fiber sensing device 20 according to the third embodiment described above. In the example of FIG. 18, the display unit 40 is shared between the two optical fiber sensing devices 20X and 20Y, but is not limited thereto. The display unit 40 may be individually provided on each of the two optical fiber sensing devices 20X and 20Y.
[0070]
Further, in the above-described embodiment, the detection unit 22 detects the occurrence of a power failure based on the environmental pattern included in the optical signal received by the reception unit 21, but the reception unit 21 cannot receive the optical signal itself. It is also possible. Therefore, if the receiving unit 21 cannot receive the optical signal, the detecting unit 22 may determine that the optical fiber 10 itself has failed.
[0071]
Further, in the above-described embodiment, the optical fiber sensing device 20 is provided with a plurality of components (reception unit 21, detection unit 22, and notification unit 23), but the present invention is not limited to this. The components provided in the optical fiber sensing device 20 are not limited to being provided in one device, and may be distributed in a plurality of devices.
[0072]

Subsequently, with reference to FIG. 19, the hardware configuration of the computer 50 that realizes the optical fiber sensing devices 20, 20X, and 20Y will be described below.
[0073]
As shown in FIG. 19, the computer 50 includes a processor 501, a memory 502, a storage 503, an input / output interface (input / output I / F) 504, a communication interface (communication I / F) 505, and the like. The processor 501, the memory 502, the storage 503, the input / output interface 504, and the communication interface 505 are connected by a data transmission line for transmitting and receiving data to and from each other.
[0074]
The processor 501 is, for example, an arithmetic processing unit such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit). The memory 502 is, for example, a memory such as a RAM (Random Access Memory) or a ROM (Read Only Memory). The storage 503 is, for example, a storage device such as an HDD (Hard Disk Drive), an SSD (Solid State Drive), or a memory card. Further, the storage 503 may be a memory such as RAM or ROM.
[0075]
The storage 503 stores a program that realizes the functions of the components (reception unit 21, detection unit 22, and notification unit 23) included in the optical fiber sensing devices 20, 20X, and 20Y. By executing each of these programs, the processor 501 realizes the functions of the components included in the optical fiber sensing device 20. Here, when executing each of the above programs, the processor 501 may read these programs on the memory 502 and then execute the programs, or may execute the programs without reading them on the memory 502. Further, the memory 502 and the storage 503 also play a role of storing information and data held by the components included in the optical fiber sensing device 20.
[0076]
Further, the above-mentioned program can be stored by using various types of non-transitory computer readable medium and supplied to a computer (including a computer 50). Non-temporary computer-readable media include various types of tangible storage media. Examples of non-temporary computer readable media include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), optomagnetic recording media (eg, optomagnetic disks), CD-ROMs (Compact Disc-ROMs), CDs. -R (CD-Recordable), CD-R / W (CD-ReWritable), semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM. , May be supplied to the computer by various types of transient computer readable media. Examples of transient computer readable media include electrical signals, optical signals, and electromagnetic waves. The computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
[0077]
The input / output interface 504 is connected to a display device 5041, an input device 5042, a sound output device 5043, and the like. The display device 5041 is a device that displays a screen corresponding to drawing data processed by the processor 501, such as an LCD (Liquid Crystal Display), a CRT (Cathode Ray Tube) display, and a monitor. The input device 5042 is a device that receives an operator's operation input, and is, for example, a keyboard, a mouse, a touch sensor, and the like. The display device 5041 and the input device 5042 may be integrated and realized as a touch panel. The sound output device 5043 is a device such as a speaker that acoustically outputs sound corresponding to acoustic data processed by the processor 501.
[0078]
The communication interface 505 sends and receives data to and from an external device. For example, the communication interface 505 communicates with an external device via a wired communication path or a wireless communication path.
[0079]
Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above-described embodiments. Various changes that can be understood by those skilled in the art can be made to the structure and details of the present disclosure within the scope of the present disclosure.
For example, the above-described embodiment may be used in combination in part or in whole.
[0080] [0080]
Further, a part or all of the above embodiments may be described as in the following appendix, but the present invention is not limited to the following.
(Appendix) 1)
Optical fiber and
A receiving unit that receives an optical signal including an environmental pattern indicating an environmental state in the vicinity of the optical fiber from the optical fiber.
A detector that detects the occurrence of a power outage based on the change in the environmental pattern,
An optical fiber sensing system equipped with.
(Appendix 2)
The detection unit determines that a power failure has occurred when the environmental pattern changes to a pattern that does not include a predetermined pattern.
The optical fiber sensing system described in Appendix 1.
(Appendix 3)
The detection unit identifies the position where the power failure occurred based on the position in the optical fiber whose environmental pattern has changed.
The optical fiber sensing system according to Appendix 1 or 2.
(Appendix 4)
The detection unit identifies a region associated with a section including a position where the environment pattern has changed among a plurality of regions associated with each section of the optical fiber as a region where a power failure has occurred.
The optical fiber sensing system described in Appendix 3.
(Appendix 5)
Display part and
A notification unit that superimposes information indicating at least one of the position and area where the power failure occurred on the map information and displays it on the display unit.
The optical fiber sensing system according to Appendix 4, further comprising.
(Appendix 6)
The detection unit determines that a power failure has occurred when the environmental pattern does not include a pattern indicating vibration due to operation of an electronic device in the vicinity of the optical fiber.
The optical fiber sensing system according to any one of Supplementary note 1 to 5.
(Appendix 7)
The detection unit determines that a power failure has occurred when the environmental pattern changes based on the change in the temperature of the optical fiber.
The optical fiber sensing system according to any one of Supplementary note 1 to 6.
(Appendix 8)
A receiving unit that receives an optical signal including an environmental pattern indicating an environmental state in the vicinity of the optical fiber from the optical fiber.
A detector that detects the occurrence of a power outage based on the change in the environmental pattern,
An optical fiber sensing device equipped with.
(Appendix 9)
The detection unit determines that a power failure has occurred when the environmental pattern changes to a pattern that does not include a predetermined pattern.
The optical fiber sensing device described in Appendix 8.
(Appendix 10)
The detection unit identifies the position where the power failure occurred based on the position where the environment pattern has changed.
The optical fiber sensing device according to Appendix 8 or 9.
(Appendix 11)
The detection unit identifies a region associated with a section including a position where the environment pattern has changed among a plurality of regions associated with each section of the optical fiber as a region where a power failure has occurred.
The optical fiber sensing device according to Appendix 10.
(Appendix 12)
A notification unit that superimposes information indicating at least one of the position and area where a power failure has occurred on the map information and displays it on the display unit.
The optical fiber sensing device according to Appendix 11, further comprising.
(Appendix 13)
The detection unit determines that a power failure has occurred when the environmental pattern does not include a pattern indicating vibration due to operation of an electronic device in the vicinity of the optical fiber.
The optical fiber sensing device according to any one of Supplementary note 8 to 12.
(Appendix 14)
The detection unit determines that a power failure has occurred when the environmental pattern changes based on the change in the temperature of the optical fiber.
The optical fiber sensing device according to any one of Supplementary note 8 to 13.
(Appendix 15)
It is a power failure detection method using an optical fiber sensing system.
A reception step of receiving an optical signal including an environmental pattern indicating an environmental state in the vicinity of the optical fiber from the optical fiber, and
A detection step to detect the occurrence of a power outage based on the change in the environmental pattern,
Power outage detection method including.
(Appendix 16)
In the detection step, if the environment pattern changes to a pattern that does not include a predetermined pattern, it is determined that a power failure has occurred.
The power failure detection method described in Appendix 15.
(Appendix 17)
In the detection step, the position where the power failure occurred is specified based on the position where the environmental pattern has changed.
The power failure detection method according to Appendix 15 or 16.
(Appendix 18)
In the detection step, among the plurality of regions associated with each of the sections in the optical fiber, the region associated with the section including the position where the environment pattern has changed is specified as the region where the power failure has occurred.
The power failure detection method described in Appendix 17.
(Appendix 19)
A display step that superimposes information indicating at least one of the position and area where the power failure occurred on the map information and displays it on the display unit.
The power failure detection method according to Appendix 18, further including.
(Appendix 20)
In the detection step, it is determined that a power failure has occurred when the environmental pattern does not include the pattern indicating vibration due to the operation of the electronic device in the vicinity of the optical fiber.
The power failure detection method according to any one of Supplementary note 15 to 19.
(Appendix 21)
In the detection step, it is determined that a power failure has occurred when the environmental pattern changes based on the change in the temperature of the optical fiber.
The power failure detection method according to any one of Appendix 15 to 20.
[0081]
This application claims priority based on Japanese application Japanese Patent Application No. 2019-148297 filed on August 13, 2019, and all of its disclosures are incorporated here.
Code description
[0082]
10 Optical fiber
20, 20X, 20Y optical fiber sensing equipment
21 Receiver
22 Detection unit
23 Notification unit
30, 30a-30h Electronic devices
40 display unit
50 computers
501 processor
502 memory
503 storage
504 I / O interface
5041 Display device
5042 input device
5043 sound output device
505 communication interface
The scope of the claims
[Claim 1]
Optical fiber and
A receiving unit that receives an optical signal including an environmental pattern indicating an environmental state in the vicinity of the optical fiber from the optical fiber.
A detector that detects the occurrence of a power outage based on the change in the environmental pattern,
An optical fiber sensing system equipped with.
[Claim 2]
The detection unit determines that a power failure has occurred when the environmental pattern changes to a pattern that does not include a predetermined pattern.
The optical fiber sensing system according to claim 1.
[Claim 3]
The detection unit identifies the position where the power failure occurred based on the position in the optical fiber whose environmental pattern has changed.
The optical fiber sensing system according to claim 1 or 2.
[Claim 4]
The detection unit identifies a region associated with a section including a position where the environment pattern has changed among a plurality of regions associated with each section of the optical fiber as a region where a power failure has occurred.
The optical fiber sensing system according to claim 3.
[Claim 5]
Display part and
A notification unit that superimposes information indicating at least one of the position and area where the power failure occurred on the map information and displays it on the display unit.
The optical fiber sensing system according to claim 4, further comprising.
[Claim 6]
The detection unit determines that a power failure has occurred when the environmental pattern does not include a pattern indicating vibration due to operation of an electronic device in the vicinity of the optical fiber.
The optical fiber sensing system according to any one of claims 1 to 5.
[Claim 7]
The detection unit determines that a power failure has occurred when the environmental pattern changes based on the change in the temperature of the optical fiber.
The optical fiber sensing system according to any one of claims 1 to 6.
[Claim 8]
A receiving unit that receives an optical signal including an environmental pattern indicating an environmental state in the vicinity of the optical fiber from the optical fiber.
A detector that detects the occurrence of a power outage based on the change in the environmental pattern,
An optical fiber sensing device equipped with.
[Claim 9]
The detection unit determines that a power failure has occurred when the environmental pattern changes to a pattern that does not include a predetermined pattern.
The optical fiber sensing device according to claim 8.
[Claim 10]
The detection unit identifies the position where the power failure occurred based on the position where the environment pattern has changed.
The optical fiber sensing device according to claim 8 or 9.
[Claim 11]
The detection unit identifies a region associated with a section including a position where the environment pattern has changed among a plurality of regions associated with each section of the optical fiber as a region where a power failure has occurred.
The optical fiber sensing device according to claim 10.
[Claim 12]
A notification unit that superimposes information indicating at least one of the position and area where a power failure has occurred on the map information and displays it on the display unit.
The optical fiber sensing device according to claim 11, further comprising.
[Claim 13]
The detection unit determines that a power failure has occurred when the environmental pattern does not include a pattern indicating vibration due to operation of an electronic device in the vicinity of the optical fiber.
The optical fiber sensing device according to any one of claims 8 to 12.
[Claim 14]
The detection unit determines that a power failure has occurred when the environmental pattern changes based on the change in the temperature of the optical fiber.
The optical fiber sensing device according to any one of claims 8 to 13.
[Claim 15]
It is a power failure detection method using an optical fiber sensing system.
A reception step of receiving an optical signal including an environmental pattern indicating an environmental state in the vicinity of the optical fiber from the optical fiber, and
A detection step to detect the occurrence of a power outage based on the change in the environmental pattern,
Power outage detection method including.
[Claim 16]
In the detection step, if the environment pattern changes to a pattern that does not include a predetermined pattern, it is determined that a power failure has occurred.
The power failure detection method according to claim 15.
[Claim 17]
In the detection step, the position where the power failure occurred is specified based on the position where the environmental pattern has changed.
The power failure detection method according to claim 15 or 16.
[Claim 18]
In the detection step, among the plurality of regions associated with each of the sections in the optical fiber, the region associated with the section including the position where the environment pattern has changed is specified as the region where the power failure has occurred.
The power failure detection method according to claim 17.
[Claim 19]
A display step that superimposes information indicating at least one of the position and area where the power failure occurred on the map information and displays it on the display unit.
The power failure detection method according to claim 18, further comprising.
[Claim 20]
In the detection step, it is determined that a power failure has occurred when the environmental pattern does not include the pattern indicating vibration due to the operation of the electronic device in the vicinity of the optical fiber.
The power failure detection method according to any one of claims 15 to 19.
[Claim 21]
In the detection step, it is determined that a power failure has occurred when the environmental pattern changes based on the change in the temperature of the optical fiber.
The power failure detection method according to any one of claims 15 to 20.