Abnormality determination method, abnormality determination device, abnormality determination system, and abnormality determination program

Abstract

The present disclosure implements an abnormality determination method that can contribute to the improvement of the accuracy of determining abnormalities. An abnormality determination method according to an embodiment of the present disclosure comprises: a step for setting a first area (AR1) where an attempt is made to detect abnormalities using an optical fiber sensor (12); a step for setting a second area (AR2, AR3) where abnormality detection is disabled when an abnormality is detected within the first area (AR1); a step for setting a disabling time period during which abnormality detection is disabled when an abnormality is detected within the first area (AR1); and a step wherein when an abnormality is detected within the first area (AR1), if the location at which the abnormality is detected is within the second area (AR2, AR3) and the time at which the abnormality is detected is within the disabling time period, then it is determined that no abnormalities have occurred within the first area (AR1).

Description

[Technical field]

[0001] The present disclosure relates to an abnormality determination method, an abnormality determination device, an abnormality determination system, and a non-transitory computer-readable medium. [Background technology]

[0002] In recent years, technology has been developed to detect abnormalities using optical fiber sensors. For example, an intrusion detection system in Patent Document 1 determines that an intruder is present in the track when the power fluctuation of an optical fiber sensor exceeds a preset threshold.

[0003] At this time, the intrusion detection system of Patent Document 1 judges whether the position detected by the optical fiber sensor matches the position of the track maintenance work, and if they match, it presumes that the optical fiber sensor is reacting to a track maintenance worker and judges that there is no intruder on the track. In this way, the intrusion detection system of Patent Document 1 suppresses erroneous abnormality judgments by the optical fiber sensor. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-349892 A Summary of the Invention [Problem to be solved by the invention]

[0005] The intrusion detection system of Patent Document 1 suppresses erroneous determination of an abnormality by the optical fiber sensor based only on whether the detection position by the optical fiber sensor coincides with the position of the track maintenance work. Therefore, there is room for further suppression of erroneous determination and improvement of the accuracy of abnormality determination.

[0006] One of the objectives that the embodiments disclosed in this specification aim to achieve is to provide an abnormality determination method, an abnormality determination device, an abnormality determination system, and a non-transitory computer-readable medium that contribute to solving the problem. It should be noted that this objective is only one of the objectives that the embodiments disclosed in this specification aim to achieve. Other objectives or objectives and novel features will be apparent from the description of this specification or the accompanying drawings. [Means for solving the problem]

[0007] An anomaly detection method according to an embodiment of the present disclosure includes: setting a first area in which detection of an abnormality is attempted by the optical fiber sensor; setting a second area in which detection of an abnormality is invalidated when an abnormality is detected within the first area; setting an invalid time period during which detection of an abnormality is invalidated when an abnormality is detected within the first area; determining that an abnormality has not occurred within the first area when an abnormality is detected within the first area, if the position at which the abnormality is detected is within the second area and the time at which the abnormality is detected is within the invalid time period; Equipped with.

[0008] According to one aspect of the present disclosure, there is provided a non-transitory computer readable medium comprising: A process of setting a first area in which an abnormality is detected by the optical fiber sensor; A process of setting a second area in which detection of an abnormality is invalidated when an abnormality is detected in the first area; A process of setting an invalid time period during which detection of an abnormality is invalidated when an abnormality is detected within the first area; a process of determining that an abnormality has not occurred in the first area when an abnormality is detected in the first area, if the position where the abnormality is detected is in the second area, and if the time when the abnormality is detected is within the invalid time period; The abnormality determination program that causes the computer to execute the above is stored.

[0009] An abnormality determination device according to an embodiment of the present disclosure includes: A state information acquiring means for acquiring state information of an inside of the first area detected by the optical fiber sensor; A map information acquisition means for acquiring map information of the first area; A time information acquisition means for acquiring current time information; an invalidation information acquiring means for acquiring information indicating a second area in which detection of an abnormality is invalidated when an abnormality is detected in the first area, and information indicating an invalidation time period in which detection of the abnormality is invalidated when an abnormality is detected in the first area; A determination means for determining whether or not an abnormality has occurred within the first area based on state information within the first area; Equipped with When an abnormality is detected within the first area, the determination means determines that no abnormality has occurred in the first area if the location at which the abnormality was detected is within the second area and the time at which the abnormality was detected is within the invalid time period.

[0010] An abnormality determination system according to an embodiment of the present disclosure includes: The abnormality determination device described above, The optical fiber sensor is disposed so as to surround the first area; A setting means for setting the first area, the second area, and the invalid time period; Equipped with. Effect of the Invention

[0011] According to the above-described aspects, it is possible to realize an abnormality determination method, an abnormality determination device, an abnormality determination system, and a non-transitory computer-readable medium that can contribute to improving the accuracy of abnormality determination. [Brief description of the drawings]

[0012] [Figure 1]1 is a block diagram showing a minimum configuration of an abnormality determination device according to a first embodiment. [Diagram 2] 4 is a flow chart showing the flow of an abnormality determination method according to the first embodiment. [Diagram 3] FIG. 11 is a block diagram showing the configuration of an abnormality determination system according to a second embodiment. [Figure 4] FIG. 11 is a block diagram showing a configuration of an abnormality determination device according to a second embodiment. [Diagram 5] FIG. 2 is a diagram for explaining a first area. [Figure 6] FIG. 11 is a diagram for explaining a second area. [Figure 7] FIG. 11 is a flow chart showing the flow of an abnormality determination method according to the second embodiment. [Figure 8] FIG. 11 is a flow chart showing the flow of an abnormality determination method according to the second embodiment. [Figure 9] FIG. 11 is a block diagram showing the configuration of an abnormality determination system according to a third embodiment. [Figure 10] FIG. 11 is a diagram for explaining a second area. [Figure 11] FIG. 2 is a diagram illustrating an example of a hardware configuration included in the abnormality determination device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, the best mode for carrying out the present disclosure will be described with reference to the accompanying drawings. However, the present disclosure is not limited to the following embodiment. In addition, the following description and drawings are appropriately simplified for clarity of explanation.

[0014] <Embodiment 1> The abnormality determination device and the abnormality determination method of the present embodiment are suitable for detecting an abnormality in a facility by, for example, an optical fiber sensor. First, the minimum configuration of the abnormality determination device of the present embodiment will be described.

[0015] 1 is a block diagram showing a minimum configuration of an abnormality determination device according to the present embodiment. As shown in FIG 1, the abnormality determination device 1 includes a state information acquisition unit 2, a map information acquisition unit 3, a time information acquisition unit 4, an invalid information acquisition unit 5, and a determination unit 6.

[0016] The status information acquiring unit 2 acquires status information of the inside of a first area of ​​a facility that is a target for anomaly detection, the status information being detected by optical fiber sensors arranged to surround the first area. The map information acquiring unit 3 acquires map information of the first area.

[0017] The time information acquiring unit 4 acquires current time information. The invalidation information acquiring unit 5 acquires information indicating a second area in which detection of an abnormality is invalidated when an abnormality is detected in the first area, and information indicating an invalidation time period in which detection of an abnormality is invalidated when an abnormality is detected in the first area.

[0018] The determination unit 6 determines whether or not an abnormality has occurred inside the first area based on the state information inside the first area. At this time, when the determination unit 6 detects an abnormality inside the first area, if the position where the abnormality is detected is inside the second area and the time when the abnormality is detected is within the invalid time zone, the determination unit 6 determines that an abnormality has not occurred in the first area.

[0019] Next, the flow of the abnormality determination method of this embodiment will be described. Fig. 2 is a flow chart showing the flow of the abnormality determination method of this embodiment. First, an inspector sets a first area where an attempt is made to detect an abnormality by the optical fiber sensor (S1).

[0020] Next, the inspector sets a second area in which detection of an abnormality is invalidated when an abnormality is detected within the first area, and sets an invalid time period in which detection of an abnormality is invalidated when an abnormality is detected within the first area (S2).

[0021] Next, the optical fiber sensor attempts to detect an abnormality within the first area (S3). Then, when an abnormality is detected within the first area, if the position where the abnormality is detected is within the second area and the time when the abnormality is detected is within the invalid time zone, the determination unit 6 determines that no abnormality has occurred within the first area (S4).

[0022] In this way, the abnormality determination device 1 and the abnormality determination method of the present embodiment determine the occurrence of an abnormality within the first area by considering not only the position where the abnormality was detected but also the time when the abnormality was detected. Therefore, compared to the intrusion detection system of Patent Document 1, it is possible to suppress erroneous abnormality determination, which contributes to improving the accuracy of abnormality determination.

[0023] <Embodiment 2> In this embodiment, an abnormality determination system including an abnormality determination device and an abnormality determination method that are more preferable than the abnormality determination device 1 and the abnormality determination method of embodiment 1 will be described. Fig. 3 is a block diagram showing the configuration of the abnormality determination system of this embodiment. Fig. 4 is a block diagram showing the configuration of the abnormality determination device of this embodiment. Fig. 5 is a diagram for explaining the first area. Fig. 6 is a diagram for explaining the second area.

[0024] 3, the abnormality determination system 11 of this embodiment includes an optical fiber sensor 12, a mobile object 13, a portable terminal 14, an abnormality determination device 15, and a storage unit 16. The optical fiber sensor 12, the mobile object 13, the portable terminal 14, the abnormality determination device 15, and the storage unit 16 are connected via a network 17. Here, the network 17 is, for example, the Internet, and is constructed by a telephone line network, a wireless communication path, Ethernet (registered trademark), or the like.

[0025] The optical fiber sensor 12, like a general optical fiber sensor, includes, for example, an optical fiber, a light source provided at one end of the optical fiber, and a light receiving element provided at the other end of the optical fiber, and is arranged so that the optical fiber surrounds a first area.

[0026] Such an optical fiber sensor 12 is configured to detect a change in the characteristics of the light propagating through the optical fiber due to a change applied to the optical fiber, thereby detecting the internal state of the first area, such as vibration, temperature, or sound of an object within the first area, and the position of the object, etc. Note that the optical fiber sensor 12 is not limited to the above-mentioned transmission type optical fiber sensor, and a reflection type optical fiber sensor can also be used.

[0027] The mobile object 13 autonomously travels to the vicinity of the position of an object in which an abnormality has been detected within the first area, based on information indicating a control instruction generated by a control unit 158 ​​of the abnormality determination device 15 described later, for example. The mobile object 13 includes a position detection unit 131 and a surrounding detection unit 132.

[0028] The position detection unit 131 includes, for example, a receiver that receives positioning information from a satellite positioning system such as a Global Positioning System (GPS), and detects the position of the mobile object 13 within the first area based on the received positioning information and map information of the first area. However, the position detection unit 131 may be configured to be capable of detecting the position of the mobile object 13 within the first area.

[0029] The surrounding detection unit 132 includes, for example, a camera or LiDar (Light Detection and Ranging). The surrounding detection unit 132 detects, for example, the shape of an object around the moving body 13 and the distance to the object as the surrounding environment of the moving body 13. However, the moving body 13 may be, for example, a drone or a walking robot as long as it is configured to be capable of moving within a planar region of the first area.

[0030] The mobile terminal 14 is a tablet PC (Personal Computer) or a smartphone carried by an inspector, and includes a setting unit 141 and a display unit 142. The setting unit 141 is an input unit for setting the first area, the second area, and the invalid time zone. However, the setting unit 141 may be any device as long as it is capable of setting the first area, the second area, and the invalid time zone, and may be, for example, a PC keyboard.

[0031] The first area is an abnormality detection target area in which detection of abnormalities is attempted by moving the mobile object 13. For example, as shown in Fig. 5, the first area AR1 is set to an area including facilities such as a plant, and is an area surrounded by a dashed line in Fig. 5. However, the planar shape of the first area AR1 is not limited to a rectangular shape, and may be a circle, an ellipse, or another polygon.

[0032] The second area is an anomaly detection invalid area that invalidates the detection of an anomaly when the anomaly is detected inside the first area AR1. The second area is set so that the optical fiber sensor 12 does not erroneously determine that an anomaly has occurred inside the first area AR1 when the optical fiber sensor 12 detects vibrations or moving sounds of the moving object 13, or vibrations or noises from construction work inside the first area AR1.

[0033] For example, as shown in FIG. 6, the second area AR2 is set as an area within the first area AR1 where vibrations and noise occur due to roads along which the moving body 13 moves or construction work, and in FIG. 6, it is the area surrounded by a dashed double-dashed line.

[0034] In other words, in Figure 6, within the first area AR1, the area in which the roads along which the moving body 13 moves are located is set as the second area AR2-1, and the area in which vibrations and noise occur due to construction work, etc. is set as the second area AR2-2.

[0035] However, the second area AR2 only needs to be set so as not to erroneously determine that an abnormality has occurred within the first area AR1 based on the vibrations or moving sounds of the moving body 13, or the vibrations or noise of construction work within the first area AR1.

[0036] At this time, it is preferable that the first area AR1 and the second area AR2 are set as map information that expresses the first area AR1 and the second area AR2 in three-dimensional coordinates. For example, the first area AR1 and the second area AR2 can be set as map information that expresses the first area AR1 and the second area AR2 in three-dimensional coordinates based on the XYZ coordinate system as shown in Figures 5 and 6. In other words, it is preferable that the first area AR1 and the second area AR2 are three-dimensional spaces.

[0037] The invalid time period is a time period from the start to the end of invalidating the detection of an abnormality when the abnormality is detected inside the first area AR1. The invalid time period can be set to, for example, a time period when the mobile object 13 moves through the second area AR2-1 or a time period when construction work is being carried out in the second area AR2-2.

[0038] The display unit 142 is a display that displays information indicating the surrounding environment of the moving object 13. However, the display unit 142 only needs to be capable of displaying information indicating the surrounding environment of the moving object 13, and may be mounted on, for example, smart glasses worn by an inspector.

[0039] Abnormality determination device 15 has substantially the same configuration as in embodiment 1, and therefore will not be described repeatedly. However, as shown in FIG. 4, abnormality determination device 15 includes a state information acquisition unit 151, a position information acquisition unit 152, a surrounding information acquisition unit 153, a route information acquisition unit 154, a map information acquisition unit 155, a time information acquisition unit 156, an invalid information acquisition unit 157, a control unit 158, and a determination unit 159.

[0040] The state information acquisition unit 151 acquires, for example, information indicating vibration, temperature, or sound of an object inside the first area AR1 detected by the optical fiber sensor 12, and the position of the object inside the first area AR1. The position information acquisition unit 152 acquires information indicating the position of the moving object 13 detected by the position detection unit 131 inside the first area AR1.

[0041] The surrounding information acquisition unit 153 acquires information indicating the surrounding environment of the mobile object 13 detected by the surrounding detection unit 132. At this time, it is preferable that the information indicating the position of the detected object, the information indicating the position of the mobile object 13, and the information indicating the surrounding environment of the mobile object 13 are information expressed in three-dimensional coordinates corresponding to map information expressed in three-dimensional coordinates of the first area AR1 and the second area AR2.

[0042] The map information acquisition unit 155 acquires map information of the first area AR1. The time information acquisition unit 156 acquires current time information from, for example, a clock (not shown). The invalid information acquisition unit 157 acquires map information of the second area AR2 and information indicating an invalid time period during which detection of an abnormality is ignored when the abnormality is detected within the first area AR1.

[0043] Based on the map information of the first area AR1, the position information of the mobile object 13, and the information indicating the position of the detected object, the control unit 158 ​​generates a control instruction to move the mobile object 13 to the vicinity of the position where the abnormality was detected inside the first area AR1 (i.e., the position of the object that is the source of the detected abnormality and emits vibration, temperature, or sound that matches the predetermined abnormal vibration, abnormal temperature, or abnormal sound as described later), and controls the mobile object 13 based on the control instruction. Note that, although the control unit 158 ​​is provided in the abnormality determination device 15 in this embodiment, it may be provided in the mobile object 13.

[0044] The determination unit 159 determines whether or not an abnormality has been detected within the first area AR1 based on the vibration, temperature or sound of an object within the first area AR1 detected by the optical fiber sensor 12 within the first area AR1, and information indicating the position of the object within the first area AR1.

[0045] In detail, the judgment unit 159 judges whether the vibration, temperature or sound of an object inside the first area AR1 detected by the optical fiber sensor 12 matches a preset abnormal vibration, abnormal temperature or abnormal sound, and if they match, judges that an abnormality has been detected inside the first area AR1.

[0046] Then, when the judgment unit 159 detects an abnormality within the first area AR1, if the position of the object that is the source of the detected abnormality is within the second area AR2 and the time when the abnormality is detected is within the invalid time zone, the judgment unit 159 judges that no abnormality has occurred in the first area AR1.

[0047] The storage unit 16 stores map information of the first area AR1, map information of the second area AR2, information indicating an invalid time period, and information indicating abnormal vibration, abnormal temperature, or abnormal sound.

[0048] Next, the flow of the abnormality determination method of this embodiment will be described. Figures 7 and 8 are flow charts showing the flow of the abnormality determination method of this embodiment. First, for example, an inspector sets a first area AR1 via the setting unit 141 of the mobile terminal 14 (S11). Then, the inspector sets a second area AR2 and an invalid time period via the setting unit 141 of the mobile terminal 14 (S12).

[0049] Next, the state information acquisition unit 151 acquires information indicating the vibration, temperature or sound of an object within the first area AR1, and the position of the object within the first area AR1, by using the optical fiber sensor 12 (S13).

[0050] Next, the determination unit 159 determines whether or not the information indicating the vibration, temperature, or sound of the object detected by the optical fiber sensor 12 matches a preset abnormal vibration, abnormal temperature, or abnormal sound (S14). If there is no match (NO in S14), the determination unit 159 determines that no abnormality has occurred inside the first area AR1 (S15), and returns to the process of S13.

[0051] On the other hand, if there is a match (YES in S14), the judgment unit 159 judges whether or not the object that is the source of the detected abnormality is present within the first area AR1 based on information indicating the position of the object and map information of the first area AR1 (S16).

[0052] If the object that is the source of the detected abnormality is not present within the first area AR1 (NO in S16), the judgment unit 159 judges that no abnormality has occurred within the first area AR1 (S15) and returns to step S13.

[0053] On the other hand, if the object that is the source of the detected abnormality is present inside the first area AR1 (YES in S16), the determination unit 159 determines that the abnormality has been detected inside the first area AR1 (S17). At this time, the determination unit 159 may obtain time information when the abnormality was detected inside the first area AR1.

[0054] Next, the judgment unit 159 judges whether or not the position of the object that is the source of the detected abnormality is within the second area AR2 and whether or not the time when the abnormality was detected is within the invalid time period, based on information indicating the position of the object that is the source of the detected abnormality, map information of the second area AR2, information indicating the invalid time period, and time information when the abnormality was detected (S18).

[0055] If the position of the object that is the source of the detected abnormality is within the second area AR2 and the time when the abnormality was detected is within the invalid time period (YES in S18), the judgment unit 159 judges that no abnormality has occurred within the first area AR1 (S15) and returns to step S13.

[0056] On the other hand, if the position of the object that is the source of the detected abnormality is within the second area AR2 and the time when the abnormality was detected is not within the invalid time period (NO in S18), the judgment unit 159 judges that the abnormality has occurred within the first area AR1 (S19).

[0057] Next, the control unit 158 ​​generates a control instruction for moving the moving object 13 to the vicinity of the position of the object, based on the map information of the first area AR1, the position information of the moving object 13, and the information indicating the position of the object that is the source of the detected abnormality, and controls the moving object 13 based on the control instruction (S20). Then, the surrounding information acquisition unit 153 acquires information indicating the surrounding environment of the moving object 13 from the surrounding detection unit 132 of the moving object 13, and causes the display unit 142 of the mobile terminal 14 to display the information indicating the surrounding environment of the moving object 13 (S21).

[0058] In this way, the abnormality determination system 11, the abnormality determination device 15, and the abnormality determination method of the present embodiment also determine the occurrence of an abnormality inside the first area AR1 by considering not only the position where the abnormality was detected but also the time when the abnormality was detected. Therefore, compared to the intrusion detection system of Patent Document 1, it is possible to suppress erroneous abnormality determination, which can contribute to improving the accuracy of abnormality determination.

[0059] Moreover, since it is determined whether or not an abnormality has been detected inside the first area AR1, it is possible to suppress erroneous determinations based on noises (such as train noises or fireworks noises) outside the first area AR1, for example.

[0060] Furthermore, when the first area AR1 and the second area AR2 are a three-dimensional space represented by three-dimensional coordinates, erroneous determinations based on, for example, the sound of an airplane flying above the second area AR2 can be suppressed.

[0061] Furthermore, when information showing the surrounding environment of the mobile object 13 is displayed on the display unit 142 of the mobile terminal 14, the inspector can quickly identify the object that is the source of the abnormality.

[0062] <Embodiment 3> The abnormality determination system, abnormality determination device, and abnormality determination method of this embodiment are substantially the same as the abnormality determination system 11, abnormality determination device 15, and abnormality determination method of embodiment 2, but the method of setting the second area AR3 is different. Therefore, duplicated explanations will be omitted, and the same elements will be described using the same reference numerals.

[0063] Fig. 9 is a block diagram showing the configuration of the abnormality determination system of the present embodiment. Fig. 10 is a diagram for explaining the second area. As shown in Fig. 9, abnormality determination system 21 of the present embodiment differs from abnormality determination system 11 of embodiment 2 in that it includes first sound generation unit 22 and second sound generation unit 23.

[0064] 10, the first sound generating unit 22 is provided in the moving object 13 and generates a sound of a preset first frequency. However, the first sound generating unit 22 may be provided in, for example, a vehicle in which a visitor to the facility rides, and may be provided in an object that generates moving sounds and vibrations while moving within the first area AR1.

[0065] 10, the second sound generating unit 23 is arranged so as to surround an area where vibrations and noises due to scheduled construction or the like will occur, and generates a sound of a preset second frequency. However, it is sufficient that the second sound generating unit 23 is arranged so as to surround the abnormality detection invalid area.

[0066] The setting unit 141 of the portable terminal 14 is operated by an inspector so that when the moving body 13 moves within the first area AR1, a predetermined area surrounding the moving body 13 is set to the second area AR3-1 when the detection position of the sound of the first frequency emitted by the first sound generating unit 22 detected by the optical fiber sensor 12 approximately coincides with the detection position of the moving sound of the moving body 13.

[0067] In addition, the setting unit 141 of the mobile terminal 14 is operated by the inspector so that the area surrounded by the detection positions of the sounds of the second frequency emitted by the multiple second sound generating units 23 by the optical fiber sensor 12 is set as the second area AR3-2.

[0068] At this time, the storage unit 16 may store, in addition to the map information of the first area AR1, the map information of the second area AR3, information indicating the invalid time period, and information indicating abnormal vibration, abnormal temperature, or abnormal sound, information indicating the first frequency, information indicating the second frequency, and information indicating the frequency of the moving sound of the moving body 13.

[0069] When such an abnormality determination system 21 is used to determine whether an abnormality has occurred inside the first area AR1, the determination can be performed in the same manner as the abnormality determination method of the embodiment 2. At this time, when the determination unit 159 determines whether the position of the object in which an abnormality has been detected is inside the second area AR3, even if the moving sound of the moving object 13 matches a preset abnormal sound, the determination unit 159 determines that no abnormality has occurred inside the first area AR1 because the preset area surrounding the moving object 13 when the detection position of the sound of the first frequency emitted by the first sound generation unit 22 and the detection position of the moving sound of the moving object 13 approximately match is set to the second area AR3-1.

[0070] Furthermore, when the judgment unit 159 determines whether the position of the object in which an abnormality has been detected is inside the second area AR3, even if the noise of the object matches a predetermined abnormal sound, the judgment unit 159 determines that no abnormality has occurred inside the first area AR1 if the object is located inside the second area AR3-2, because the area surrounded by the detection positions of the sounds of the second frequency emitted by the multiple second sound generating units 23 is set as the second area AR3-2.

[0071] By using the first sound generating unit 22 and the second sound generating unit 23 in this manner, areas where the movement sound of the moving body 13 is generated, areas where vibrations and noise from construction work, etc. are generated, etc. can be easily set as the second area AR3.

[0072] <Other embodiments> In the above-mentioned first to third embodiments, the present disclosure has been described as a hardware configuration, but the present disclosure is not limited to this. The present disclosure can also be realized by having a CPU (Central Processing Unit) execute a computer program to process each component.

[0073] For example, the abnormality determination device 15 according to the above-described embodiment may have the following hardware configuration: FIG.

[0074] 11 includes an interface 32, a processor 33, and a memory 34. The abnormality determination device 15 described in the above embodiment is realized by the processor 33 reading and executing a program stored in the memory 34. In other words, this program is a program for causing the processor 33 to function as the abnormality determination device 15.

[0075] Here, a program includes a set of instructions (or software code) that, when loaded into a computer, causes the computer to perform one or more functions. The program may be stored on a non-transitory computer-readable medium or a tangible storage medium. By way of example and not limitation, computer-readable medium or tangible storage medium includes random-access memory (RAM), read-only memory (ROM), flash memory, solid-state drive (SSD) or other memory technology, CD-ROM, digital versatile disc (DVD), Blu-ray® disk or other optical disk storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage device. The program may be transmitted on a transitory computer-readable medium or a communication medium. By way of example and not limitation, a transitory computer-readable medium or a communication medium includes electrical, optical, acoustic, or other forms of propagated signals.

[0076] The present disclosure is not limited to the above-described embodiment, and may be modified as appropriate without departing from the spirit and scope of the present disclosure. In addition, the present disclosure may be implemented by appropriately combining the respective embodiments.

[0077] For example, the mobile object 13 in the above-mentioned second embodiment is configured to travel autonomously, but may be configured to move based on the operation of an inspector. Also, the mobile object 13 may be configured to patrol within the first area AR1.

[0078] For example, the setting ranges and setting methods of the second areas AR2 and AR3 in the above-mentioned embodiments 2 and 3 are merely examples, and in short, they should be set so that areas that may cause erroneous detection of abnormalities within the first area AR1 can be excluded from the first area AR1.

[0079] A part or all of the above-described embodiment can be described as, but is not limited to, the following supplementary notes. (Appendix 1) setting a first area in which detection of an abnormality is attempted by the optical fiber sensor; setting a second area in which detection of an abnormality is invalidated when an abnormality is detected within the first area; setting an invalid time period during which detection of an abnormality is invalidated when an abnormality is detected within the first area; determining that an abnormality has not occurred within the first area when an abnormality is detected within the first area, if the position at which the abnormality is detected is within the second area and the time at which the abnormality is detected is within the invalid time period; The abnormality determination method includes:

[0080] (Appendix 2) The abnormality determination method according to claim 1, wherein the first area and the second area are set by three-dimensional coordinates.

[0081] (Appendix 3) The abnormality determination method described in Appendix 1 or 2, wherein the second area is a predetermined area surrounding the moving body when a detection position of a sound of a predetermined first frequency emitted by a first sound generating means provided on a moving body moving within the first area coincides with a detection position of a moving sound of the moving body.

[0082] (Appendix 4) The abnormality determination method according to any one of appendix 1 to 3, wherein the second area is an area surrounded by detection positions of sounds of a predetermined second frequency emitted by a plurality of second sound generating means arranged within the first area.

[0083] (Appendix 5) acquiring location information of a moving object moving within the first area; acquiring map information of the first area; a step of moving the mobile object within the first area based on position information of the mobile object, the position information where the abnormality was detected, and map information of the first area, and acquiring surrounding environment information of the mobile object; 5. The abnormality determination method according to claim 1, further comprising:

[0084] (Appendix 6) A process of setting a first area in which an abnormality is detected by the optical fiber sensor; A process of setting a second area in which detection of an abnormality is invalidated when an abnormality is detected in the first area; A process of setting an invalid time period during which detection of an abnormality is invalidated when an abnormality is detected within the first area; a process of determining that an abnormality has not occurred in the first area when an abnormality is detected in the first area, if the position where the abnormality is detected is in the second area, and if the time when the abnormality is detected is within the invalid time period; A non-transitory computer-readable medium storing an abnormality determination program for causing a computer to execute the above.

[0085] (Appendix 7) A state information acquiring means for acquiring state information of an inside of the first area detected by the optical fiber sensor; A map information acquisition means for acquiring map information of the first area; A time information acquisition means for acquiring current time information; an invalidation information acquiring means for acquiring information indicating a second area in which detection of an abnormality is invalidated when an abnormality is detected in the first area, and information indicating an invalidation time period in which detection of the abnormality is invalidated when an abnormality is detected in the first area; A determination means for determining whether or not an abnormality has occurred within the first area based on state information within the first area; Equipped with The abnormality determination device, wherein when an abnormality is detected within the first area, the determination means determines that no abnormality has occurred in the first area if the location at which the abnormality is detected is within the second area and the time at which the abnormality is detected is within the invalid time period.

[0086] (Appendix 8) a location information acquisition means for acquiring location information of a moving object moving within the first area; A surrounding information acquisition means for acquiring surrounding environment information of the moving object; Location information of the moving object, and location information where the abnormality was detected Reach and a control means for controlling the moving object based on map information of the first area. 8. The abnormality determination device according to claim 7, comprising:

[0087] (Appendix 9) An abnormality determination device according to claim 7 or 8; The optical fiber sensor is disposed so as to surround the first area; and A setting means for setting the first area, the second area, and the invalid time period; An abnormality determination system comprising:

[0088] (Appendix 10) a first sound generating means provided on a moving body that moves within the first area and configured to generate a sound of a preset first frequency; The abnormality determination system described in Appendix 9, wherein the setting means sets a predetermined area surrounding the moving body when the detection position of the sound of the first frequency emitted by the first sound generating means coincides with the detection position of the moving sound of the moving body when the moving body moves within the first area as the second area.

[0089] (Appendix 11) a surrounding detection means provided in the moving body and detecting a surrounding environment of the moving body; A display means for displaying information indicating a surrounding environment of the moving object; 11. The abnormality determination system according to claim 10, comprising:

[0090] (Appendix 12) a plurality of second sound generating means arranged within the first area and configured to generate a sound of a preset second frequency; 12. The abnormality determination system according to any one of claims 9 to 11, wherein the setting means sets the second area to an area surrounded by detection positions of sounds of the second frequency emitted by the plurality of second sound generating means. [Explanation of symbols]

[0091] 1 Abnormality determination device 2. Status information acquisition section 3. Map information acquisition section 4 Time information acquisition section 5. Invalidation information acquisition section 6 Judgment section 11 Anomaly Judgment System 12 Optical fiber sensor 13 moving object, 131 position detection unit, 132 surrounding detection unit 14 Mobile terminal, 141 Setting unit, 142 Display unit 15 Abnormality determination device, 151 Status information acquisition unit, 152 Position information acquisition unit, 153 Surrounding information acquisition unit, 154 Route information acquisition unit, 155 Map information acquisition unit, 156 Time information acquisition unit, 157 Invalid information acquisition unit, 158 Control unit, 159 Determination unit 16 Storage area 17 Network 21 Anomaly Judgment System 22 First sound generating unit 23 Second sound generating unit 31 device, 32 interface, 33 processor, 34 memory AR1 First Area AR2 (AR2-1, AR2-2), AR3 (AR3-1, AR3-2) Second Area

Claims

1. setting a first area in which detection of an abnormality is attempted by the optical fiber sensor; setting a second area in which, when an abnormality is detected in the first area, detection of the abnormality is invalidated; setting an invalid time period during which detection of an abnormality is invalidated when an abnormality is detected within the first area; determining that an abnormality has not occurred within the first area when an abnormality is detected within the first area, if the position at which the abnormality is detected is within the second area and the time at which the abnormality is detected is within the invalid time period; Equipped with an abnormality determination method, wherein the second area is a predetermined area surrounding the moving body when a detection position of a sound of a predetermined first frequency emitted by a first sound generating means provided on the moving body moving within the first area coincides with a detection position of a moving sound of the moving body.

2. 2. The abnormality determination method according to claim 1, wherein the second area is an area surrounded by detection positions of sounds of a predetermined second frequency emitted by a plurality of second sound generating means arranged within the first area.

3. A process of setting a first area in which an abnormality is detected by the optical fiber sensor; A process of setting a second area in which detection of an abnormality is invalidated when an abnormality is detected in the first area; A process of setting an invalid time period during which detection of an abnormality is invalidated when an abnormality is detected within the first area; a process of determining that an abnormality has not occurred within the first area when an abnormality is detected within the first area, if the position at which the abnormality is detected is within the second area and the time at which the abnormality is detected is within the invalid time period; Run the following on your computer: an abnormality determination program, wherein the second area is a predetermined area surrounding the moving body when a detection position of a sound of a predetermined first frequency emitted by a first sound generating means provided on the moving body moving within the first area coincides with a detection position of a moving sound of the moving body.

4. a state information acquiring means for acquiring state information of an inside of the first area detected by the optical fiber sensor; A map information acquisition means for acquiring map information of the first area; A time information acquisition means for acquiring current time information; an invalidation information acquiring means for acquiring information indicating a second area in which detection of an abnormality is invalidated when an abnormality is detected in the first area, and information indicating an invalidation time period in which detection of the abnormality is invalidated when an abnormality is detected in the first area; a determination means for determining whether or not an abnormality has occurred within the first area based on state information within the first area; Equipped with the determination means determines that an abnormality has not occurred in the first area when an abnormality is detected in the first area, if the position where the abnormality is detected is in the second area, and if the time when the abnormality is detected is within the invalid time period, An abnormality determination device, wherein the second area is a predetermined area surrounding the moving body when the detection position of a sound of a predetermined first frequency emitted by a first sound generating means provided on a moving body moving within the first area coincides with the detection position of a moving sound of the moving body.

5. A location information acquisition means for acquiring location information of the moving body; A surrounding information acquisition means for acquiring surrounding environment information of the moving object; a control means for controlling the moving object based on location information of the moving object, location information where the abnormality was detected, and map information of the first area; The abnormality determination device according to claim 4 .

6. An abnormality determination device comprising: a status information acquisition means for acquiring status information of the inside of a first area detected by an optical fiber sensor; a map information acquisition means for acquiring map information of the first area; a time information acquisition means for acquiring current time information; an invalid information acquisition means for acquiring information indicating a second area in which detection of an abnormality is invalidated when an abnormality is detected inside the first area, and information indicating an invalid time zone in which detection of the abnormality is invalidated when an abnormality is detected inside the first area; and a determination means for determining whether an abnormality has occurred inside the first area based on the status information of the inside of the first area, wherein the determination means determines that no abnormality has occurred in the first area when an abnormality is detected inside the first area, if the position at which the abnormality was detected is inside the second area and the time at which the abnormality was detected is within the invalid time zone; The optical fiber sensor is disposed so as to surround the first area; a setting means for setting the first area, the second area, and the invalid time period; a first sound generating means provided on a moving object moving within the first area, the first sound generating means generating a sound of a preset first frequency; Equipped with The setting means sets a predetermined area surrounding the moving body when the detection position of the sound of the first frequency emitted by the first sound generating means coincides with the detection position of the moving sound of the moving body when the moving body moves within the first area as the second area.

7. a surrounding detection means provided in the moving body and detecting a surrounding environment of the moving body; A display means for displaying information indicating a surrounding environment of the moving object; The abnormality determination system according to claim 6 .

8. a plurality of second sound generating means arranged within the first area and configured to generate a sound of a preset second frequency; 8. The abnormality determination system according to claim 6, wherein the setting means sets the second area to an area surrounded by detection positions of the sounds of the second frequency emitted by the plurality of second sound generating means.

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