JP2020034503A - Notification system, information processing device, information processing method and information processing program - Google Patents

Abstract

To reduce the time required for a user to identify abnormal points in facilities.SOLUTION: A notification system includes: 13 sensors S1 to S13 which are installed in a plurality of points in production facilities, respectively, and detect parameters indicating a state of the facilities; a conversion unit 154 which converts each of a plurality of parameters detected by 13 sensors into a frequency component; a specifying unit 156 which specifies the related frequency component from each of the plurality of frequency components converted by the conversion unit 154; and a display device 200 for displaying information capable of specifying a sensor which has detected the parameter in which the related frequency component is obtained.SELECTED DRAWING: Figure 4

Description

  The present disclosure relates to a notification system, an information processing device, an information processing method, and an information processing program.

  For example, in a production facility for producing a certain product, a driving device having a vibrating part such as a motor or a compressor may be used. In the invention described in Patent Document 1, in the production facility, a sensor such as a vibrometer for measuring the frequency of the vibrating section is used. Patent Literature 1 proposes a method of converting a frequency detected by the sensor into a frequency component, and using the converted frequency component to determine an abnormality of a production facility.

JP-A-11-173909

  However, in equipment such as large-scale production equipment, there is a case where it is desired to determine the abnormality of the production equipment using a large number of sensors. When the invention described in Patent Literature 1 is applied to such a large-scale production facility, all of the parameters of each of a large number of sensors are converted into frequency components, and each of the numerous frequency components is converted into one. It is necessary to judge the abnormality of the equipment by using it. In this case, the time required for the user to identify the abnormal part of the equipment becomes enormous.

  In the present disclosure, a notification system, an information processing apparatus, and an information processing method, which have been devised in view of the above-described circumstances, are capable of reducing the time required for a user to specify an abnormal part of equipment in a certain situation. , And an information processing program are disclosed.

  A notification system according to an aspect of the present disclosure is provided at each of a plurality of locations of the equipment, and a plurality of detection units for detecting a parameter indicating the state of the equipment, and a plurality of parameters detected by the plurality of detection units A conversion unit that converts each of the frequency components into a frequency component, a specification unit that specifies a related frequency component from each of the plurality of frequency components converted by the conversion unit, and a parameter from which the related frequency component is obtained. And a notifying unit for notifying information that can specify the detected detecting unit.

In a certain aspect, the notification unit displays the related frequency component and the information.
In one aspect, the notification unit displays a related frequency component and a frequency component different from the related frequency component in different modes.

In a certain aspect, the plurality of detection units detect a parameter each time, and
The notification unit displays the time at which the conversion unit has acquired the parameter, the related frequency component, and the information.

  In one aspect, the apparatus further includes a receiving unit that receives designation of a reference detection unit of the plurality of detection units, wherein the notification unit specifies a reference frequency component converted from a parameter detected by the reference detection unit and the reference detection unit. Possible information, a frequency component related to the reference frequency component, and information that can specify a detection unit that has detected a parameter from which the frequency component is obtained are displayed.

  In one aspect, the receiving unit receives one of a frequency component related to the reference frequency component and a detecting unit that detects a parameter from which the frequency component is obtained.

In one aspect, the specifying unit specifies a frequency component related to the reference frequency component.
In a certain aspect, the notification unit displays the related frequency component and the information while displaying the frequency component different from the related frequency component and the information that can specify the detection unit that has detected the parameter from which the frequency component is obtained. Is not displayed.

  According to another aspect of the present disclosure, a notification system according to another aspect of the present disclosure is configured such that, in one aspect, a plurality of detection units are installed at a plurality of locations of the facility, and detect parameters indicating a state of the facility. A conversion unit configured to convert each of the plurality of parameters detected by the plurality of detection units into a frequency component; and a specification unit configured to specify a related frequency component from each of the plurality of frequency components converted by the conversion unit. And a storage unit that stores correspondence information in which related frequency components and information that can specify a location where an abnormality has occurred in the facility are stored, and an abnormality occurrence location that corresponds to the relevant frequency component specified by the identification unit. And a notifying unit for notifying identifiable information.

  In one aspect, the related frequency components are a combination of one frequency component, another frequency component identical to the one frequency component, one frequency component, and an approximate value of the one frequency component. , A combination of one frequency component, another frequency component that is N times the value of the one frequency component (N is an integer of 2 or more), one frequency component, and one frequency component. At least one of the combinations with other frequency components that is an approximate value of N times the value of the frequency component.

  In one aspect, the plurality of detection units include detection units that detect different types of parameters.

  In a certain aspect, the information processing apparatus further includes a notifying unit that executes a notifying process when the specifying unit determines that the unrelated frequency component is the related frequency component.

  In one aspect, the conversion unit converts each of the plurality of parameters into a frequency component when a specification from the user is input.

  In a certain aspect, when the parameter detected by the detection unit is an abnormal parameter, or when the frequency component converted by the conversion unit is an abnormal frequency component, a plurality of frequency components converted by the conversion unit In each case, the associated frequency component is specified.

  An information processing apparatus according to an aspect of the present disclosure is configured such that each of a plurality of parameters installed in a plurality of locations of equipment and detected by a plurality of detection units for detecting a parameter indicating a state of the equipment includes a frequency component. A conversion unit that converts the frequency component into a plurality of frequency components, a specification unit that specifies a related frequency component from each of the plurality of frequency components converted by the conversion unit, and a detection unit that detects a parameter from which the related frequency component is obtained. An output unit that outputs a signal to be notified to the notification unit as much as possible.

  An information processing apparatus according to another aspect of the present disclosure is configured such that each of a plurality of parameters installed at a plurality of locations of equipment and detected by a plurality of detection units for detecting a parameter indicating a state of the equipment changes the frequency of each of the plurality of parameters. A conversion unit that converts the component into components, a specifying unit that specifies a related frequency component from each of the plurality of frequency components converted by the conversion unit, a related frequency component, and an abnormality occurrence location of the equipment can be specified. A storage unit that stores the information associated with the information, and an output unit that outputs a signal that causes the notification unit to notify the information that can specify the abnormality occurrence location corresponding to the related frequency component specified by the specifying unit. Prepare.

  The information processing method according to an aspect of the present disclosure, each of a plurality of parameters installed in a plurality of locations of the equipment, and a plurality of parameters detected by a plurality of detection unit that detects a parameter indicating the state of the equipment frequency component The step of converting, from each of the plurality of converted frequency components, the step of specifying the relevant frequency component, and the notification unit that can specify the detection unit that has detected the parameter from which the relevant frequency component is obtained can be specified. Outputting a signal to be notified.

  An information processing method according to another aspect of the present disclosure is a method in which each of a plurality of parameters installed at a plurality of locations of equipment and detected by a plurality of detection units for detecting a parameter indicating a state of the equipment changes the frequency of each parameter. Converting to a component, identifying a related frequency component from each of the plurality of converted frequency components, and associating the related frequency component with information capable of identifying an abnormality occurrence location of the equipment. Outputting a signal for causing the notification unit to notify the information that can specify the location of the abnormality corresponding to the related frequency component, based on the obtained correspondence information.

  An information processing program according to an aspect of the present disclosure includes, in a computer, each of a plurality of parameters detected by a plurality of detection units that are installed at a plurality of locations of equipment and detect parameters indicating a state of the equipment. To the frequency component, from each of the plurality of converted frequency components, to specify the relevant frequency component, it is possible to specify the detection unit that has detected the parameter obtained the relevant frequency component Outputting a signal to be notified to the notification unit.

  An information processing program according to another aspect of the present disclosure includes, in a computer, a plurality of parameters, each of which is installed at a plurality of locations of equipment, and which is detected by a plurality of detection units that detect parameters indicating a state of the equipment. A procedure for converting each to a frequency component, a procedure for specifying a related frequency component from each of the plurality of converted frequency components, a related frequency component, and information capable of specifying a location where an abnormality has occurred in the equipment. And outputting a signal for causing the notification unit to notify the information that can specify the abnormality occurrence location corresponding to the related frequency component, based on the correspondence information associated with.

  According to the present disclosure, it is possible to reduce the time required for the user to determine the abnormality of the facility.

It is a figure showing the example of application of this embodiment. It is a figure showing an example of the production equipment of this embodiment. FIG. 3 is a diagram illustrating types and the like of each sensor according to the embodiment. It is a figure showing the example of functional composition of the display system of this embodiment. FIG. 3 is a diagram that embodies data used in the display system of the embodiment. It is a figure showing an example of a display screen of this embodiment. FIG. 2 is a diagram illustrating an example of a hardware configuration of the information processing apparatus and the like according to the embodiment. 5 is a flowchart illustrating a process of the information processing apparatus according to the embodiment. It is a figure showing an example of a screen of another embodiment. 11 is a flowchart illustrating a process of the information processing apparatus according to another embodiment. 11 is a flowchart illustrating a process of the information processing apparatus according to another embodiment. 11 is a flowchart illustrating a process of the information processing apparatus according to another embodiment. It is a figure showing an example of a table. It is a figure showing the example of functional composition of the notice system of another embodiment. 11 is a flowchart illustrating a process of the information processing apparatus according to another embodiment.

  Hereinafter, a display system (notification system) according to an embodiment of the present invention will be described with reference to the drawings. The same components and corresponding components are denoted by the same reference numerals, and duplicate description may not be repeated. In addition, it is originally planned that at least one configuration described in each embodiment is appropriately combined and used.

[Application example]
FIG. 1 is a diagram illustrating an application example of the present embodiment. An application example of the present embodiment will be described with reference to FIG. The display system of the present embodiment is installed in, for example, a production facility. The production facility is, for example, a facility that continuously produces an object. “Continuously producing an object” means, for example, producing a “long object”. Further, the target object may be an object which is not interrupted as an individual article and is produced as a continuous article for several hours or more under the same conditions. The target object includes an object obtained by cutting an article for a next process, packing, or the like. The production equipment includes, for example, equipment such as spinning, film forming, papermaking, printing, coating, continuous extrusion, and continuous polymerization of resin. The production equipment may be spinning, film forming, coating, or continuous extrusion.

  In the production equipment, the lower limit of the time during which the object is produced under the same conditions is preferably 3 hours, more preferably 5 hours, and further preferably 7 hours. The upper limit of the time is not particularly limited, but is preferably 2 years or less, and more preferably 1 year or less, in consideration of regular maintenance of production facilities and sensors, switching of product numbers, and the like.

  The equipment may be another equipment. For example, the equipment may be an inspection equipment for inspecting the quality of a manufactured object. It is preferable that the display system of the present embodiment be installed in "a facility where, when vibration occurs at a certain location, resonance based on the vibration may occur at a location different from the location where the vibration has occurred".

  In the example of FIG. 1, the equipment will be described as a production equipment 1. FIG. 1A shows a case where the production facility 1 is operating normally. M sensors S1 to SM (detection units) are provided at a plurality of locations (hereinafter, M, M is an integer of 2 or more) of the production facility 1, respectively. Each of the M sensors S1 to SM detects a parameter indicating the state of the production facility 1. Typically, a parameter indicating one or more components configuring the production facility 1 is detected. The components include, for example, members such as pipes and rolls, and devices such as pumps and motors (see FIG. 2 and the like). Hereinafter, in the example of FIG. 1, the sensor S2 detects a parameter indicating a state of a motor as a component. Parameters indicating the state of the motor include, for example, the number of rotations of the motor, the frequency of vibration of the motor, and the like.

  The sensor S13 detects a parameter indicating a state of a pipe as a component. The parameter indicating the state of the pipe is, for example, the frequency of the pipe. The sensor S16 detects a parameter indicating a state of a bearing as a component. The parameter indicating the state of the bearing is, for example, the frequency of the bearing. Although not shown, the other sensors detect parameters indicating the state of each component of the production facility 1. In addition, a user (for example, a worker at the production facility 1) inspects an occurrence situation of an abnormality of the production facility 1, an occurrence situation of an object produced by the production facility 1, and the like.

  Next, as shown in FIG. 1B, it is assumed that an abnormality A has occurred in the motor of the production facility 1. The abnormality A is, for example, that the motor does not operate normally due to foreign matter entering the motor. In addition, the user recognizes that an abnormality has occurred in any part (any component) of the production equipment 1 by inspecting an object manufactured in the production equipment, but the abnormality has occurred. It is assumed that the specified part cannot be identified.

  Here, when the abnormality A occurs in the motor, abnormal vibration (abnormal vibration) based on the abnormality A occurs in the motor. The abnormal vibration propagates to another component, so that the other component resonates (vibrates) based on the vibration. The abnormal vibration propagates, for example, through an intermediate to other components. The intermediate includes, for example, at least one of other components of the production facility 1, an object produced by the production facility 1, and air. In the example of FIG. 1B, it is assumed that, as indicated by a broken arrow, the sound is propagated to other components such as a pipe and a bearing based on abnormal vibration of the motor. Thereby, the pipe and the bearing resonate.

  When an abnormality occurs in an object manufactured in the production facility, the user converts the parameters detected by the sensors S1 to SM into frequency components by Fourier transform executed by an information processing device (for example, a PC). Is converted to

  FIG. 1C is a diagram showing a state after parameters detected by each of the sensors S1 to SN are converted into frequency components. As shown in FIG. 1C, the frequency component converted from the parameter of the sensor S1 is 7 Hz. The frequency component converted from the parameter of the sensor S2 is 2.5 Hz. The frequency component converted from the parameter of the sensor S13 is 2.5 Hz. The frequency component converted from the parameter of the sensor S16 is 2.5 Hz. The frequency component converted from the parameters of the sensor SM is 7 Hz. Although not shown for other sensors, all parameters detected by the other sensors are also converted to frequency components.

  Here, “the frequency component of the parameter detected by the sensor of the component where the abnormal vibration has occurred” and “the frequency component of the parameter detected by the sensor of the component where the resonance based on the abnormal vibration has occurred” are: Each related. The “related frequency components” in the example of FIG. 1 are “the same frequency components”. In the example of FIG. 1C, the frequency component of the sensor S2 (the sensor of the component where the abnormal vibration has occurred) and the frequency component of the sensor S13 and the sensor S16 (the sensor of the component where the resonance based on the abnormal vibration has occurred) Are 2.5 Hz respectively.

  In the display system of the present embodiment, “the frequency component of the parameter detected by the sensor of the component where the abnormal vibration has occurred” and “the frequency of the parameter detected by the sensor of the component where the resonance based on the abnormal vibration has occurred” The "components" can cause the user to recognize the sensor of the component in which the abnormal vibration has occurred, using the phenomenon that they are related to each other. Typically, the display system displays the relevant frequency component and the name of the sensor that detected the parameter from which the relevant frequency component was obtained. With this display, the user is allowed to indicate to the user the component part in which the abnormal vibration has occurred and the component part in which resonance based on the abnormal vibration has occurred as a “candidate component part in which an abnormality has occurred (candidate of an abnormal part)”. Can be recognized.

  Conventionally, the user has to specify the abnormal part of the equipment by verifying the frequency components of all the parameters of all the sensors S1 to SM one by one. Therefore, conventionally, the time required for the user to specify the abnormal part becomes enormous. In particular, when the value of M is large, such as 50, that is, when the number of sensors is 50, it is necessary to verify all the frequency components of the parameters from the 50 sensors one by one. is there.

  On the other hand, the display system of the present embodiment displays the related frequency component and the name of the sensor that detected the parameter from which the related frequency component was obtained. As a result, the display system of the present embodiment allows the user to recognize the component where the abnormal vibration has occurred and the component where the resonance based on the abnormal vibration has occurred. That is, as indicated by the square in FIG. 1C, the display system can make the user recognize the candidate of the component (candidate of the abnormal portion) in which it is estimated that the abnormal vibration has occurred. Candidates of the components that are assumed to have caused the abnormal vibration are the components that have caused the abnormal vibration and the components that have caused resonance based on the abnormal vibration.

  Therefore, for example, even when the value of M is large, such as 50, that is, even when the number of sensors is 50, the user receives abnormal vibrations from all the components configuring the production equipment 1. It is possible to narrow down to candidates for components that are presumed to have occurred. The user examines the candidate component, examines the parameter of the candidate component, or examines a frequency component (for example, a frequency component of another power) converted from the parameter, thereby causing an abnormality. The component (location) where the vibration has occurred can be specified.

  As described above, the display system according to the present embodiment can make the user recognize a component candidate that is assumed to have caused abnormal vibration. Therefore, it is possible to reduce the time required for the user to identify the abnormal part of the equipment as compared with the related art in which the user needs to verify each of the frequency components converted from the parameters of all the sensors.

<First embodiment>
[Production equipment]
A production facility to which the display system of the present embodiment is applied will be described. FIG. 2 is a diagram illustrating an example of the production facility 1 according to the present embodiment. The production equipment 1 applies a coating agent (for example, a coloring paint) to the long film 20. The coating roll 8 rotates in the direction of arrow a in FIG. At the lowest point of the coating roll 8, a coating liquid pan (not shown) for storing the coating agent is provided. When the coating roll 8 is immersed in a coating liquid pan, a large amount of a coating agent is applied to the surface of the coating roll 8. The blade 10 removes a part of a large amount of the coating agent applied to the surface of the coating roll 8. Thereby, the blade 10 can make the thickness of the coating agent applied to the surface of the coating roll 8 constant.

  Further, the production equipment 1 has a pressure roll (not shown) that presses the film 20 in the direction of the coating roll 8. The coating roll 8 and the pressure roll rotate while the coating roll 8 and the pressure roll sandwich the film 20. Thereby, the coating roll 8 applies at least a part of the coating agent having a constant thickness to the film 20 while the film 20 moves in the direction of the arrow b. The coating roll 8 can be displaced vertically.

  The shaft 9 of the coating roll 8 is connected to the bearing 12. The motor 14 rotates the coating roll 8 by rotating the shaft 9. At least a part of the inside of the coating roll 8 is hollow, and the hollow is filled with a liquid (for example, water). The liquid storage unit 2 stores water. The pump 4 pumps the stored water to the rotary joint 6 via the pipe 7 (see arrow c). The rotary joint 6 conveys the pumped water into the coating roll 8. Further, the water filled in the coating roll 8 returns to the liquid storage unit 2 via the rotary joint 6 and the pipe 7 by the pressure of the pump 4. The liquid storage unit 2 performs temperature adjustment so that water in the liquid storage unit has a constant temperature. Therefore, the water in the coating roll 8 is also maintained at a constant temperature. Therefore, the coating roll 8 can apply the coating agent to the film 20 at a constant temperature.

  The production facility 1 is composed of a plurality of components. The plurality of components include, for example, the liquid storage unit 2, the pump 4, the rotary joint 6, the pipe 7, the coating roll 8, the blade 10, the bearing unit 12, the motor 14, and the like.

  Sensors (detection units) are provided at a plurality of locations (hereinafter, also referred to as M locations, where M is an integer of 2 or more) of the production facility 1. The sensor detects a parameter indicating a state of the production facility 1. The state of the production facility 1 typically refers to “the state of a plurality of components configuring the production facility 1”. The state refers to, for example, the pressure of the pump 4.

  In the example of FIG. 2, M = 13, and the number of sensors is also 13. Next, each of the 13 sensors S1 to S13 will be described. FIG. 3 is a diagram illustrating types of the sensors S1 to S13 and the like. As shown in FIG. 3, S1 to S13 are referred to as sensor identification information. FIG. 3 shows a sensor type (sensor name) corresponding to the sensor identification information and parameters detected by the sensor.

  The sensor S1 is a thermometer that detects the temperature of the liquid storage unit 2 as a parameter. The sensor S2 is a tachometer that detects the number of rotations of a rotation component included in the pump 4 as a parameter. The sensor S3 is a vibrometer that detects the frequency of the rotary joint 6 as a parameter. The sensor S4 is a pressure gauge that detects the pressure in the pipe 7 as a parameter. The sensor S5 is a flow meter that detects the flow rate of water flowing in the pipe 7 as a parameter.

  The sensor S6 is a vibrometer that detects the frequency of the pipe 7 through which water flows as a parameter. The sensor S7 is a displacement meter that detects a displacement amount of the coating roll 8 as a parameter. The sensor S8 is a vibrometer that detects the frequency of the blade 10 as a parameter. The sensor S9 is a displacement meter that detects a displacement amount of the film (for example, a vertical displacement amount) as a parameter. The sensor S10 is a thickness gauge that detects the thickness (film thickness) of the coating material applied to the film 20 as a parameter.

  The sensor S11 is a vibrometer that detects the frequency of the bearing 12 as a parameter. The sensor S12 is a vibrometer that detects the frequency of the motor 14 as a parameter. The sensor S13 is a vibrometer that detects the rotation speed of the motor 14 as a parameter.

  The types of sensors are not limited to those shown in FIG. 3 and may include other types of sensors. Other sensors include, for example, at least one of a distance meter, a densitometer, a photometer, a chromaticity meter, and the like.

  Further, regarding the parameters detected by the sensor, the sensor continuously detects the state (each parameter) of the production equipment 1. In addition, “continuous detection” may be used to detect parameters without interruption. Further, “detecting continuously” does not mean that there is no momentary interruption, but may also mean that parameters are continuously detected during the production time in the production equipment. For example, temperature as a parameter hardly fluctuates in milliseconds or less, and the sensor may measure such a parameter at a predetermined interval. The determined interval is preferably 1 minute or less, more preferably 10 seconds or less, further preferably 5 seconds or less, and particularly preferably 1 second or less. The display system may execute, for example, a smoothing process for a parameter that tends to vary due to the influence of noise or the like.

<About display system>
FIG. 4 shows a functional configuration example of the display system 300. The display system 300 includes a plurality of sensors (sensors S1 to S13), the information processing device 100, and the display device 200.

  The information processing apparatus 100 includes a function of the acquisition unit 152, a function of the conversion unit 154, a function of the specifying unit 156, a function of the output unit 157, and the like.

  The parameters detected by each of the sensors S1 to S13 (that is, 13 parameters) are input to the acquisition unit 152 of the information processing device 100 as a signal such as a voltage value or a current value. The acquisition unit 152 acquires 13 parameters detected by the sensors S1 to S13.

  The display system 300 temporarily stores the parameters detected by each of the sensors S1 to S13 in a data storage device (data logger (not shown)), and the acquisition unit 152 stores the parameters in the data logger. The obtained parameter may be obtained. The acquisition unit 152 outputs the acquired 13 parameters to the conversion unit 154.

  A medium (data logger) for storing data includes at least one of a semiconductor memory, a hard disk, a magnetic tape, and an optical recording medium. The display system may use the one attached to the data logger as it is. In addition, the display system may connect these media externally.

  In addition, the lower limit of the period during which the data logger stores the parameters is preferably a series of operating times of the production facility 1. The lower limit for the period during which the data logger stores the parameters is preferably one day, more preferably three days, particularly preferably one week, and most preferably one month. If the period during which the data logger stores the parameters is less than the lower limit, the analysis of the production facility 1 when the user discovers an abnormality cannot be performed later. The upper limit of the storage period may be increased by increasing the capacity of the data logger. There is no particular upper limit, but it is preferable to store the data logger for 5 or 3 years.

  Next, the conversion unit 154 converts each of the 13 parameters into a frequency component. Here, a Fourier transform or a fast Fourier transform (FFT) is typically used as a transform technique. The method of converting the parameter into the frequency component may be another method. The conversion unit 154 converts the data into frequency components according to an algorithm such as FFT. The conversion unit 154 generates information related to the 13 frequency components by converting each of the 13 parameters into a frequency component. The conversion unit 154 outputs information on the 13 frequency components to the specifying unit 156.

  Further, the lower limit of the frequency analyzed (converted) by the converter 154 may be determined in advance. For example, the lower limit of the frequency is preferably 0.001 Hz, more preferably 0.005 Hz, further preferably 0.01 Hz, particularly preferably 0.05 Hz, and most preferably 0.1 Hz. If the frequency is less than this lower limit, the period may be too long and association may be difficult.

  The upper limit of the frequency is preferably 10,000 Hz, more preferably 1000 Hz, further preferably 500 Hz, particularly preferably 100 Hz, and most preferably 50 Hz. If the frequency exceeds this upper limit, the frequency will be too high and may be less related to production variations.

  In addition, a filter may be used on the data after the conversion by the conversion unit 154 as necessary. The filter includes at least one of a high pass filter, a low pass filter, a band stop filter, and the like. The conversion unit 154 may delete a specific time during which data that hinders analysis exists.

  The conversion unit 154 may convert all parameters (data) of the plurality of sensors into frequency components. Further, the conversion unit 154 may select one or more of the parameters (data) of the plurality of sensors and convert them into frequency components. When a plurality of conversion units 154 are selected, the number is preferably 3 or more, more preferably 5 or more, further preferably 8 or more, and particularly preferably 10 or more.

  Further, the conversion unit 154 may convert the parameter into a frequency component in parallel with the detection of the parameter by the sensor. That is, the conversion unit 154 may convert the parameters into frequency components online. In addition, as described in the second embodiment, the storage unit 162 may store the parameters detected by the sensor, and the display system may allow the user or the like to specify the time from the stored parameters. The specifying unit 156 may convert a parameter in a period from a start time before a predetermined period before the specified time to an end time after a predetermined period from the specified time into a frequency component. Further, the display system may allow a user or the like to specify a start time and an end time.

  Further, as described in the third embodiment, at least one of the “abnormal parameter for the parameter” and the “abnormal frequency component for the frequency component of the parameter” may be determined in advance. It may be assumed that an abnormality has occurred when "the parameter detected by the sensor becomes an abnormal parameter" or "when the frequency component of the parameter becomes an abnormal frequency component". The estimated time may be set as the designated time. At least one of the abnormal parameter and the abnormal frequency component may be any of a predetermined value, a value equal to or greater than the predetermined value, and a value equal to or less than the predetermined value.

  Next, the specifying unit 156 specifies a related frequency component from each of the plurality of frequency components converted by the conversion unit 154.

  Here, related frequency components will be described. The associated frequency component includes a first combination of one frequency component and another frequency component that is the same as the one frequency component. For example, if one frequency component of the 13 frequency components is 15 Hz and the other frequency component is 15 Hz, the one frequency component and the other frequency component are related frequency components. . Also, the first frequency component and the other frequency components are in a relationship between primary frequencies.

  The related frequency components include a second combination of one frequency component and another frequency component that is an approximate value of the one frequency component. Here, the approximate value of the one frequency component is a value within a range from “(1 frequency component) × (100−X) / 100” to “(1 frequency component) × (100 + X) / 100”. It is. X (%) represents a deviation from the frequency component of 1 and is, for example, a value satisfying 0 <X ≦ 3. The value of X is a predetermined value. Further, the value of X may be set by the user. X is set in the range of 0.1 to 5, preferably in the range of 0.5 to 4, and more preferably in the range of 1 to 3.

  When the frequency component of 1 is 15 Hz and X is 3, and the other frequency component is 14.7 Hz, the frequency component of 1 and the other frequency component are related frequency components. Is determined.

  The related frequency component includes a third combination of one frequency component and another frequency component having a value N times the one frequency component (N is an integer of 2 or more). For example, if one frequency component is 13 Hz and three other frequency components are 26 Hz, 39 Hz, and 52 Hz, respectively, the one frequency component and the three other frequency components are related frequency components. It is. The one frequency component (13 Hz) and the other frequency component (26 Hz) are in a relationship between secondary frequencies. The one frequency component (13 Hz) and the other frequency component (39 Hz) have a relationship between tertiary frequencies. The one frequency component (13 Hz) and the other frequency component (52 Hz) are in a relationship between fourth-order frequencies. The upper limit of the multi-order frequency is preferably up to the fifth order, more preferably the fourth order, and particularly preferably the third order. Beyond the fifth order, not only does the actual relationship become thinner, but it may become meaningless as elucidation of the cause of the periodic change of the actual production equipment or elucidation of the relationship with the characteristic change of the product.

  The related frequency component includes a fourth combination of one frequency component and another frequency component that is an approximate value of N times the value of the one frequency component. X (%) is, for example, a value satisfying 0 <X% ≦ 3. In this case, for example, when one frequency component is 13 Hz and three other frequency components are 25.5 Hz, 39.05 Hz, and 52.12 Hz, respectively, the one frequency component and the three Other frequency components are related frequency components. Also in this case, X is preferably within the above range.

  When the specifying unit 156 specifies the related frequency component, the output unit 157 outputs a display signal to the display device 200. The display signal includes a related frequency component and sensor information that can specify a sensor that has detected a parameter from which the related frequency component was obtained (a parameter before conversion of the related frequency component). The display device 200 displays related frequency components and sensor information in association with each other based on the display signal. That is, the display signal is a signal for causing the display device 200 to display the associated frequency component and the sensor information in association with each other.

  FIG. 5 is a diagram that embodies data used in the display system 300 of the present embodiment. FIG. 5A shows parameters detected by the sensors S1 to S13. In the parameter graph shown in FIG. 5A, the horizontal axis represents time t, and the vertical axis represents parameters detected by the sensor. For example, in the parameter graph of the sensor S1, the vertical axis indicates temperature. The parameter graph of the sensor S1 indicates the number of rotations. The acquisition unit 152 acquires data related to the parameter graph illustrated in FIG.

  Next, the detected parameters are converted into frequency components by the FFT conversion processing of the conversion unit 154. Note that the conversion unit 154 converts the detected parameter into a frequency component using a predetermined sampling frequency, the number of samples, a window function, and the like. FIG. 5B is a frequency component graph of the converted frequency component. FIG. 5B shows a frequency component graph in which the horizontal axis represents frequency and the vertical axis represents power. The unit of the frequency is “Hz”.

  In FIG. 5B, 2.51 Hz which is the frequency component of the parameter detected by the sensor S1 and 2.51 Hz which is the frequency component of the parameter detected by the sensor S13 are related to each other (the above-mentioned first component). Corresponding to a combination). Therefore, as illustrated in FIG. 5C, the specifying unit 156 specifies that the sensor S1 and the sensor S13 are related to the frequency component 2.51. Next, as shown in FIG. 5D, the display system 300 displays the sensor that has detected the relevant frequency component and the parameter from which the relevant frequency component was obtained.

[Display screen]
Next, an example of a display screen displayed by the display device 200 in FIG. FIG. 6 is a diagram illustrating an example of the display screen. In the example of FIG. 6, the measurement time, the elapsed time, and the frequency component of each sensor are displayed.

  Table creation software has been downloaded to the display device 200 in advance. The display device 200 activates the table creation software and displays the table screen shown in FIG. The measurement time may be, for example, a time at which the information processing apparatus 100 acquires a parameter from each sensor. Further, the measurement time may be, for example, a time at which the information processing apparatus 100 acquires a parameter from each sensor. The measurement time may be, for example, the time at which the conversion unit 154 converts the parameter into a frequency component.

  The elapsed time is the time from one measurement time to the next measurement time. In the example of FIG. 6, the elapsed time is 3 minutes. The conversion unit 154 of the present embodiment converts a parameter into a frequency component at each time (for example, three minutes) indicated by the elapsed time. In other words, the conversion unit 154 of the present embodiment converts a parameter into a frequency component every time a predetermined time elapses. The FFT sampling process performed by the conversion unit 154 is performed based on the elapsed time. Note that, as a modification, the elapsed time is not a fixed time, but may be, for example, a changing time. For example, the conversion unit 154 converts a parameter obtained from the sensor into a frequency component, then converts a parameter newly obtained from the sensor into a frequency component four minutes later, and then further newly converts the parameter into a frequency component two minutes later. May be converted into a frequency component, and then after three minutes, the parameter newly obtained from the sensor may be further converted into a frequency component.

  The display system 300 displays the frequency components of each sensor in order of power. In the example of FIG. 6, the first to third powers are displayed as the power order. In the example of FIGS. 5 and 6, for example, for the sensor S2 at 13:03 on February 15, 2018, the frequency component with the highest power is 0.41 Hz, and the frequency component with the second highest power is The frequency component having the third highest power of 29.63 Hz is 35.17 Hz. Note that, for the sensor S1 and the sensor S13, the frequency component having the third highest power is blank, which indicates that the third highest power does not exceed the reference value.

  The information processing apparatus 100 starts the process when the start condition is satisfied. The start condition may be, for example, a condition that the operation of the production facility 1 starts. The start condition may be, for example, when a start instruction is input from a user or the like from the reception unit 160 (see FIG. 4).

  In FIG. 6, the sensor S1 is set as a “reference”. This indicates that the sensor S1 is a reference sensor. The receiving unit 160 of the display system 300 allows a user to receive a reference sensor. For example, when an abnormality occurs in an object produced by the production facility 1, the user determines a sensor that detects a parameter of a state of the object as a reference sensor. If the receiving unit 160 has not received the reference sensor, that is, if the user has not input the reference sensor to the display system, the default sensor is set as the reference sensor. In the example of FIG. 6, the default sensor is S1. As a modification, the display system 300 may not set the reference sensor. The reference sensor will be described in the second embodiment and the like.

  In FIG. 6, a three-point reader is described between the sensor S2 and the sensor S13. This three-point reader indicates that the display of the sensors S3 to S12 is omitted. That is, in the display system of the first embodiment, the sensor identification information and the frequency components of all the sensors (S1 to S13) are displayed.

  Note that the number of displayed sensor identification information varies depending on the display magnification of the display device 200 and the like. For example, when the user increases the display magnification, characters and numbers such as frequency components and sensor identification information are displayed large, but the number of displayed sensor identification information is reduced. On the other hand, when the user reduces the display magnification, characters and numerals such as frequency components and sensor identification information are displayed small, but the number of displayed sensor identification information increases. Further, when not all the sensor identification information is displayed on one screen, the user can perform horizontal scrolling operation to display the sensor identification information and the frequency component that were not displayed.

  FIG. 6 shows an example in which the start condition is a condition that the operation of the production facility 1 starts. In the example of FIG. 6, when the measurement times are 13:00 and 13:03, the frequency components of the parameters detected by each sensor are not related. As shown in FIG. 6, the cell frame of the unrelated frequency component is shown by a thin line.

  After that, when the measurement time becomes 13:06, it is assumed that the frequency component of the parameter detected by the sensor S1 and the frequency component of the parameter detected by the sensor S13 are related. In the example of FIG. 6, it is assumed that the frequency component of the parameter detected by the sensor S1 and the frequency component of the parameter detected by the sensor S13 both become 2.51 Hz.

  The display system 300 of the present embodiment displays a related frequency component and a frequency component different from the related frequency component in different modes. In the example of FIG. 6, the display system 300 displays the frame of the cell of the related frequency component with a thick line. In addition, the display system 300 displays a frame of a frequency component different from the related frequency component by a thin line (an aspect different from a thick line).

  In the example of FIG. 6, the display system 300 displays a frequency component of 2.51 Hz for the sensor S1 and a frequency component of 2.51 Hz for the sensor S13 with thick lines. The display system 300 displays the cell lines of other frequency components such as “0.23”, “0.41”, “29.63”, “35.17”, and “0.16” as thin lines. I do.

  As shown in FIG. 6, the frequencies detected by the sensors were not related to each other until 13:03, but at 13:06, the frequency components of the parameters detected by the sensor S1 and the sensor S13 It is assumed that the detected parameter is related to the frequency component. In this case, the user can estimate that an abnormality has occurred in any part of the production facility 1 between 13:03 and 13: 6.

  In the example of FIG. 6, the frequency component of the sensor S1 is related to the frequency component of the sensor S13. Therefore, the candidate components that are assumed to have caused the abnormal vibration include “the pipe 7 whose sensor S1 detects a parameter (temperature)” and “the motor whose sensor S13 detects a parameter (rotational speed)”. 14 ". By inspecting the pipe 7 and the motor 14, the user can specify the location where the abnormal vibration has occurred. Although the example of FIG. 6 illustrates an example in which the number of sensors related to the frequency component is two, the number of sensors related to the frequency component may be three or more. In this case, the user recognizes the component in which each of the three or more sensors related to the frequency component detects a parameter as a candidate of the component that is assumed to have caused abnormal vibration.

  FIG. 6 shows an example in which the related frequency component is one type (2.51 Hz). For example, there may be two or more types of related frequency components. In this case, the display system displays each of the two or more related frequency components in a different manner. For example, when there are three types of related frequency components, for example, when the related frequency components are “3.5 Hz” and “8.2 Hz” in addition to 2.51 Hz, the display system determines these related frequency components. The frame of the cell of the frequency component other than the frequency component is indicated by a thin line, and the area in the cell is indicated by the first color (white). In the display system, a frame of a cell of “2.51 Hz” which is a related frequency component is indicated by a thick line, and an area in the cell is indicated by a second color (blue). In the display system, the frame of the cell of “3.5 Hz” which is the related frequency component is indicated by a thick line, and the area in the cell is indicated by a third color (red). In the display system, the frame of the cell of “8.2 Hz” which is a related frequency component is indicated by a thick line, and the area in the cell is indicated by a fourth color (yellow). As described above, even when the types of the related frequency components are two or more, the display system can make the user appropriately recognize the two or more types of the related frequency components.

  The notification unit 158 may execute a notification process (alarm process) when an unrelated frequency component becomes a related frequency component. The notification process may be, for example, a process of notifying a predetermined notification sound (for example, a beep sound) from a speaker of the information processing apparatus 100. Further, a notification image may be displayed in the display area of the display device 200. The notification image is, for example, a process of causing the display device 200 to display an image “An abnormality has occurred”. The notification unit 158 may operate a not-shown notification device (for example, a patrol lamp). In the example of FIG. 6, the notification unit 158 performs the notification process at 13:06.

[Example of hardware configuration of information processing device]
FIG. 7 is a diagram illustrating an example of a hardware configuration of the information processing apparatus 100. Referring to FIG. 2, information processing apparatus 100 includes a CPU (Central Processing Unit) 101 that executes a program, a ROM (Read Only Memory) 102 that stores data in a nonvolatile manner, and a RAM that stores data in a volatile manner. (Random Access Memory) 103, a hard disk drive (HDD) 104, an operation unit 105, a communication unit 106, a speaker 107, and the like.

  The operation unit 105 includes, for example, a keyboard and a mouse. The user can input various information by operating the operation unit 105.

  The HDD 104 is a nonvolatile semiconductor memory. The HDD 104 stores an operating system executed by the CPU 101, various programs, various contents, and data. In addition, the HDD 104 stores various data such as data generated by the information processing apparatus 100 and data obtained from an external device of the information processing apparatus 100 in a volatile manner.

  The communication unit 106 communicates with an external device. The external device includes, for example, thirteen sensors S1 to S13 and the display device 200. The speaker 107 generates a sound in response to a command from the CPU 101. For example, the notification unit 158 performs a notification process using the speaker 107.

  The processing in the information processing apparatus 100 is realized by each hardware and software executed by the CPU 101. Such software may be stored in the HDD 104 in advance. Further, the software may be stored in another storage medium such as a memory card and distributed as a program product. Alternatively, the software may be provided as a downloadable program product via the Internet or the like. Such software is temporarily stored in the HDD 104 after being read from the storage medium by an IC card reader / writer or other reading device or downloaded via a communication IF. The software is read from the HDD 104 by the CPU 101 and further stored in the HDD 104 in the form of an executable program. CPU 101 executes the program.

  The program is software stored in another storage medium such as the HDD 104, a memory card, a USB memory, or the like, or software downloadable via a network.

  The storage medium is not limited to a DVD-ROM, CD-ROM, FD (Flexible Disk), or hard disk, but may be a magnetic tape, a cassette tape, an optical disk (MO (Magnetic Optical Disc) / MD (Mini Disc) / DVD (Digital Versatile Disc), an optical card, a mask ROM, an EPROM (Erasable Programmable Read Only Memory), an EEPROM (Electronically Erasable Programmable Read Only Memory), a semiconductor memory such as a flash ROM, or a fixed medium for carrying a program.

  Further, the display device 200 and a notification device 400 described later may have the hardware configuration of FIG.

[Flowchart of information processing apparatus of present embodiment]
FIG. 8 is a flowchart illustrating processing of the information processing apparatus 100 according to the present embodiment. The flowchart in FIG. 8 is, for example, processing executed when the measurement time shown in FIG. 6 has been reached. In step ST4, the acquisition unit 152 acquires parameters from 13 sensors. Next, in step ST6, the conversion unit 154 converts each of the 13 parameters into a frequency component. Next, in step ST8, a related frequency component is specified from the 13 frequency components. Next, in step ST10, the specifying unit 156 outputs a display signal to the display device 200. The display device 200 displays a screen such as FIG. 6 based on the display signal.

[Effects of Display System of Present Embodiment]
Next, effects of the display system 300 of the present embodiment will be described.

  (1) The display system 300 of the present embodiment displays related frequency components in association with sensor identification information that has detected parameters from which the related frequency components have been obtained. Therefore, the user can make the user recognize the component in which the abnormal vibration has occurred and the component in which the resonance based on the abnormal vibration has occurred. That is, it is possible to make the user recognize the candidate of the component that is assumed to have caused the abnormal vibration. Therefore, it is possible to reduce the time required for the user to specify the abnormal part of the equipment.

  In particular, in recent years, production facilities have become larger and faster. If an abnormality occurs in a product (product), if the time required for the user to identify the abnormal part of the equipment becomes large, an enormous amount of error will occur until the user clarifies the cause and takes countermeasures. This means that non-defective products will be produced, and even if the production facilities are stopped, a large amount of waste will be generated until stable production is achieved. In the present embodiment, the display system displays a screen such as that shown in FIG. 6 so that the user or the like can easily perform the improvement of the processing steps in the production equipment, the improvement of the production equipment, and the maintenance and inspection of the production equipment. .

  In the example of FIG. 6 and the like, the display system displays frequency components and the like in a matrix format (table format). As a variant, the display system may display a graph of the parameters of each of the thirteen sensors. This graph is, for example, a graph in which the horizontal axis indicates time and the vertical axis indicates parameters (a graph like FIG. 5A). In addition, the graph of each sensor that detects the parameter from which the related frequency component is obtained may be displayed in the same color or a similar color, and the graphs other than the graph may be displayed in different modes.

  Further, in the example of FIG. 6, the display system displays the sensor identification information as information that allows the user to specify the sensor. However, the display system may display, instead of the sensor identification information, other information as long as the information can specify the sensor by the user. For example, the display system may display the name of the component for the parameter detected by the sensor or the identification information of the component. The display system may display the location of the sensor or the identification information of the location. The display system may display the name of the sensor.

  Further, the display system may display a schematic diagram of the production facility 1. The display system may display, in a schematic diagram of the production facility, a sensor that has detected a parameter from which a related frequency component has been obtained, in a manner different from that of the sensor other than the sensor. Further, a frequency component of the parameter detected by the sensor may be displayed in the vicinity of the sensor that has detected the parameter from which the related frequency component is obtained so as to be identifiable.

  In addition, the display system may notify the sensor that has detected the parameter from which the related frequency component has been obtained so as to specify the sensor without displaying the frequency component. In addition, the display system may notify the user by sound (voice) instead of displaying the sensor that detects the parameter from which the related frequency component is obtained. As described above, the display system minimizes the information to be notified by notifying (notifying) the related frequency component and notifying the sensor that has detected the parameter from which the related frequency component is obtained. Can be Therefore, the user can clearly recognize the sensor that has detected the parameter from which the related frequency component has been obtained.

  (2) Further, as shown in FIG. 3, the plurality of sensors (13 sensors) include a plurality of sensors that detect different types of parameters. In the example of FIG. 3, seven types of parameters that can be detected by the thirteen sensors can be detected: temperature, rotation speed, vibration frequency, pressure, flow rate, displacement amount, and thickness. That is, the 13 sensors include a sensor S1 for detecting a temperature, a sensor S2 for detecting a rotational speed, a sensor S3 for detecting a frequency, a sensor S4 for detecting a pressure, a sensor S5 for detecting a flow rate, It includes a sensor S7 for detecting the amount of displacement and a sensor S10 for detecting the thickness. The sensor S1, the sensor S2, the sensor S3, the sensor S4, the sensor S5, the sensor S7, and the sensor S10 are a plurality of sensors that detect different types of parameters. The display system 300 of the present embodiment uses the different types of parameters to specify the related frequency components, and therefore, compared to the display system that specifies the related frequency components using all the same parameters, Related frequency components can be specified from various angles.

  (3) In addition, the display system 300 displays a cell frame of a related frequency component (2.51 in FIG. 6) with a thick line, and displays a cell frame of a frequency component different from the related frequency component with a thin line. I do. That is, the display system 300 displays the related frequency component and the frequency component different from the related frequency component in different modes. Therefore, the display system 300 can make the user clearly recognize the related frequency component.

  Further, the following may be applied to different aspects. In another aspect, the color of at least one of the character of the sensor identification information and the character (number) of the frequency component may be different. In another aspect, the display mode (for example, color) of at least one of the cell on which the sensor identification information is displayed and the cell on which the frequency component character (number) is displayed may be different. Further, in a different embodiment, at least one of the character of the sensor identification information and the character (number) of the frequency component may be blinked, and the one may not be blinked.

  (4) The display system 300 also displays, for example, the time at which the information processing apparatus 100 has acquired parameters from 13 sensors, in addition to the related frequency components and the sensor identification information. I do. Therefore, for example, it is possible to make the user recognize a time when an unrelated frequency component becomes a related frequency component, that is, a time when there is a high possibility that an abnormality has occurred.

  (5) In addition, the notification unit 158 of the display system 300 may execute the notification process when an unrelated frequency component becomes a related frequency component. This notification processing allows the user to recognize that the unrelated frequency component has become the related frequency component, that is, the possibility that an abnormality has occurred is high.

  (6) Further, as shown in FIG. 6 and the like, the display system displays not only sensor identification information but also frequency components. Therefore, the display system of the present embodiment allows the user to recognize not only sensor identification information but also detailed information such as frequency components.

<Second embodiment>
[Display system of the present embodiment]
Next, a display system 300A according to a second embodiment will be described. When the production facility 1 is operating normally, the amount of change (unevenness) based on the passage of time of the thickness detected by the sensor S10, which is a thickness gauge, is less than the reference amount. However, when the amount of change based on the passage of time is equal to or more than the reference amount (when the film thickness unevenness occurs), there is a high possibility that an abnormality has occurred in the production equipment 1.

  The display system 300A causes the storage unit 162 (for example, the HDD 104) or the data logger of the information processing device 100 to store all parameters detected by the predetermined sensor at predetermined time intervals during a predetermined period (for example, one day). The user visually recognizes the parameter (for example, the thickness detected by the sensor S10) that can intuitively determine whether or not the film thickness unevenness has occurred among the parameters stored in the storage area. Is determined. Thereby, the user can determine whether or not an abnormality has occurred in the production processing in the production facility 1. Further, when an abnormality has occurred in the production processing in the production equipment 1, the user can visually recognize the time at which the abnormality is estimated to occur, that is, the time at which the change amount becomes equal to or more than the reference amount. It is assumed that the time when the change amount becomes equal to or more than the reference amount is 13:15 on April 15, 2018.

  The user inputs date and time information and a start designation for starting the processing of the information processing apparatus 100A to the accepting unit 160. The date and time information and the start specification are collectively referred to as “designation”. In addition to this designation, the receiving unit 160 can designate a reference sensor from among the sensors S1 to S13. The reference sensor can be any sensor. For example, the reference sensor is a sensor that detects a parameter of a component that is directly caused by a change in thickness detected by the sensor S10 (a component that is directly caused by an abnormality). In the production equipment 1, the component directly caused by the variation in the thickness is the coating roll 8. The sensor that detects a parameter (amount of displacement) of the coating roll 8 is the sensor S7. That is, it is assumed that the user has designated the sensor S7 as the reference sensor.

  When accepting section 160 of information processing apparatus 100A accepts a specification from the user, conversion section 154 specifies date and time information included in the specification. The conversion unit 154 converts each of the parameters detected by the 13 sensors in a predetermined period before the date and time specified from the date and time information and in a period after the predetermined period after the date and time into frequency components. This predetermined period is a predetermined period. The predetermined period may be a period that can be changed by the user. It is assumed that the predetermined period according to the present embodiment is 9 minutes. That is, the conversion unit 154 converts the 13 sensors in the period from the date and time (13:15 on April 15, 2018, 13:15) specified from the date and time information to the period of 9 minutes before and the period from the date and time to 9 minutes after the date and time. Converts each of the detected parameters into frequency components. The specifying unit 156 specifies a related frequency component from each of the 13 frequency components. Hereinafter, the frequency component of the parameter detected by the reference sensor is referred to as “reference frequency component”.

  In the present embodiment, the specifying unit 156 specifies a frequency component related to the reference frequency component. The display signal transmitted by the identification unit 156 to the display device 200 includes identification information of the reference sensor, a reference frequency component, a frequency component related to the reference frequency component, and a sensor that detects a parameter from which the frequency component is obtained. And identification information.

  The display device 200 displays a screen based on the display signal transmitted by the specifying unit 156. FIG. 9 shows an example of this screen. As shown in FIG. 9, the display device 200 displays a period from the specified date and time (13:15 on April 15, 2018 13:15) to 9 minutes before, and a date and time from the date and time to 9 minutes after the date and time, that is, Information during a period from 13:06 on April 15 to 13:24 on April 15, 2018 is displayed. The elapsed time is 3 minutes.

  In the example of FIG. 9, the display device 200 includes the sensor S7 as identification information of the reference sensor, and the first power, the second power, and the third power frequency component (reference frequency component) of the sensor S7. Is displayed. The display device 200 displays the identification information of the reference sensor, the reference frequency component, the frequency component related to the reference frequency component, and the identification information of the sensor that has detected the parameter from which the frequency component was obtained. On the other hand, the display device 200 does not display a frequency component that is not related to the reference frequency component and identification information of a sensor that has detected a parameter from which the frequency component has been obtained.

  In this embodiment, 0.31 Hz which is the reference frequency component of the sensor S7 which is the reference sensor, 0.31 Hz which is the frequency component of the second power of the sensor S8, and the frequency component of the first power of the sensor S4 are the same. A certain 0.31 Hz is related. Therefore, display device 200 displays 0.31 Hz, which is the reference frequency component of each of sensor S7, sensor S8, and sensor S4, in a manner different from the other frequency components. In the example of FIG. 9, the display device 200 displays a frame line of a 0.31 Hz cell as a thick line.

  By visually recognizing the screen in FIG. 9, the user can recognize that at time 13:12, the frequency components of 0.31 Hz are related to each other for the sensors S7, S8, and S4. The user can identify the component in which the abnormality has occurred by examining the components (candidates of the component in which the abnormality has occurred) in which each of the sensors S7, S8, and S4 is detecting a parameter. Here, by inspecting each of the coating roll 8 in which the sensor S7 detects a parameter, the blade 10 in which the sensor S8 detects a parameter, and the pipe 7 in which the sensor S4 detects a parameter, abnormalities occur in these components. Check if it is.

  Here, the user has specified that the coating roll 8 is blurred because the pressure in the pipe 7 fluctuates. Further, at around time 13:12, the worker adds water to the liquid storage unit 2 and the pressure in the liquid storage unit 2 and the pressure in the pipe 7 are changed. The user also specified that. The user controls the pressure change in the liquid storage unit 2 and the pressure change in the pipe 7 by decreasing the amount of water to be added to the liquid storage unit 2 and increasing the frequency of addition, thereby reducing the amount of water added to the pipe. The fluctuation of the pressure in 7, that is, the blurring of the coating roll 8 could be suppressed.

  FIG. 10 is a flowchart illustrating the processing of the information processing apparatus 100A according to the present embodiment. Before step ST4, the process of step ST2 is executed. In step ST2, the information processing device 100A determines whether or not the receiving unit 160 has received a designation from a user. Information processing apparatus 100A repeats the process of step ST2 until receiving unit 160 determines that the specification from the user has been received (NO in step ST2). Further, when information processing apparatus 100A determines that accepting section 160 has received the designation from the user (YES in step ST2), the processing of information processing apparatus 100A proceeds to step ST4.

[Effects of Display System 300A of Present Embodiment]
(1) The information processing apparatus 100A of the reception unit 160 of the display system 300A according to the present embodiment starts processing when a specification from a user is input. Typically, when the designation from the user is input (see step ST2 in FIG. 10), the acquisition unit 152 acquires the parameters of each of the 13 sensors. Further, when a designation from the user is input (see step ST2 in FIG. 10), the conversion unit 154 may convert each parameter of the 13 sensors into a frequency component. Thereby, for example, when the user finds an abnormality in the production equipment 1, the information processing apparatus 100A starts the processing by inputting the designation, and therefore, the display system in which the information processing apparatus always executes the processing. The processing cost can be reduced as compared with.

  (2) Further, the receiving unit 160 of the display system 300A of the present embodiment receives designation of a reference sensor among a plurality of sensors. Further, as shown in FIG. 6, the display device 200 relates to the reference frequency component converted from the parameter detected by the reference sensor (sensor S7), information capable of specifying the reference sensor, and the reference frequency component. A frequency component and information (sensor S8 and sensor S4) capable of specifying a sensor that has detected a parameter from which the frequency component is obtained are displayed. Typically, the display device 200 includes these four pieces of information (a reference frequency component converted from a parameter detected by the reference sensor, information capable of identifying the reference sensor, a frequency component related to the reference frequency component, , Information that can specify a sensor that has detected the parameter from which the frequency component is obtained) is displayed in such a manner as to have a close positional relationship.

  Therefore, for example, when the user estimates a component (for example, the coating roll 8) directly attributable to the abnormality, a sensor that detects a parameter of the component can be used as the reference sensor. Further, the user can recognize the reference frequency component converted from the parameter detected by the reference sensor and the frequency component related to the reference frequency component. Therefore, the user can recognize the frequency component (reference frequency component) of the parameter of the component part directly caused by the abnormality and the frequency component related to the reference frequency component.

  (3) As shown in FIG. 9, the display device 200 detects a reference sensor, a reference frequency component, a frequency component related to the reference frequency component, and a sensor that detects a parameter from which the frequency component is obtained ( Hereinafter, “related sensor” is displayed. On the other hand, the display device 200 does not display sensors other than the sensor and the reference sensor (hereinafter, referred to as “other sensors”) and frequency components converted from parameters detected by the other sensors. If the display device 200 also displays other sensors and the frequency components converted from the parameters detected by the other sensors, the amount of information to be displayed increases. It becomes difficult to recognize. Therefore, the display device 200 does not display the other sensors (sensors other than the sensors S7, S8, and S4) and the frequency components converted from the parameters detected by the other sensors. Thereby, the display system 300A can easily make the user recognize the related frequency component.

  (4) The specifying unit 156 specifies a frequency component related to the reference frequency component. The display device 200 displays the specified related frequency components and the like. Therefore, for example, the burden on the user can be reduced as compared with a display system in which the user specifies a frequency component related to the reference frequency component.

  As a modification, the user (user) may specify a frequency component related to the reference frequency component. For example, as shown in FIG. 6, on a screen on which the frequency components of all the sensors S1 to S13 and each of the sensors S1 to S13 are displayed, the user can select the frequency component related to the reference frequency component and the frequency component. Of the obtained parameters is designated. As the designation method, for example, a pointer (not shown) displayed on the display screen is used to detect a cell of a frequency component related to the reference frequency component or a parameter from which the frequency component is obtained using a mouse or the like. Match the cell of the sensor identification information. Thereafter, the user can designate the frequency component or the sensor identification information of the cell where the pointer is located by a mouse click operation or the like.

  When the receiving unit 160 receives one of the frequency component related to the reference frequency component and the sensor identification information that has detected the parameter from which the frequency component is obtained, the display system determines the frequency related to the reference frequency component. The information of the sensor identification information on the component and the information on the frequency component related to the reference frequency component are moved to a cell adjacent to the reference sensor. When the receiving unit 160 newly receives one of a frequency component related to the reference frequency component and sensor identification information that detects a parameter from which the frequency component is obtained, the display system sets the reference frequency component to The sensor identification information about the frequency component related to the reference frequency component and the information about the frequency component related to the reference frequency component are displayed in a cell adjacent to the adjacent cell. Even with such a configuration, the display device 200 can display a screen as shown in FIG. With such a configuration, the display device 200 can display a screen as shown in FIG. 9 while the user can visually recognize the frequency components of all the sensors.

<Third embodiment>
Next, a display system 300C according to a third embodiment will be described. In the first embodiment, it has been described that the condition under which the information processing apparatus 100 starts processing is a condition under which the production facility 1 operates. In the second embodiment, it has been described that the condition under which the information processing apparatus 100A starts processing is a condition that a designation from a user is input (see FIG. 10). In the third embodiment, the condition under which the information processing apparatus 100C starts processing includes a first condition that at least one of the parameters detected by the sensors S1 to S13 is an abnormal parameter. Abnormal parameters are determined in advance for each of the parameters detected by the sensors S1 to S13. The abnormal parameter is stored in the storage unit 162, for example. The abnormal parameter includes a parameter whose value is extremely larger than a normal parameter, and a parameter whose value is extremely smaller than a normal parameter. For example, for the displacement meter that is the sensor S10, a normal range of the film thickness of the coating material is predetermined. Values that are equal to or higher than the upper limit of the normal range and values that are equal to or lower than the lower limit of the normal range are the values of the abnormal parameters.

  FIG. 11 is a flowchart of the information processing apparatus 100C according to the third embodiment. In the example of FIG. 11, after the processing of step ST4 ends, in step ST20, the information processing apparatus 100C detects, among the parameters detected by each of the 13 sensors S1 to S13 (the parameters acquired by the acquisition unit 152 in step ST4). Is determined as to whether at least one of them has become an abnormal parameter.

  In step ST20, when the information processing apparatus 100C determines that at least one of the parameters detected by each of the 13 sensors S1 to S13 has become an abnormal parameter (YES in step ST20), the information processing apparatus 100C The process proceeds to step ST6. In step ST20, if the information processing apparatus 100C determines that none of the parameters detected by each of the 13 sensors S1 to S13 is an abnormal parameter (NO in step ST20), the information The processing of the processing device 100C ends.

  The information processing apparatus 100C according to the third embodiment executes the processing after ST6 when it is determined that at least one of the parameters detected by each of the 13 sensors S1 to S13 has become an abnormal parameter. Therefore, even if the user does not notice the abnormality of the production equipment 1, a screen such as that shown in FIG. 6 can be displayed. The information processing apparatus 100C performs the processing after ST6 by going back a specific time (for example, 5 minutes) from the time when the parameter acquired in ST4 is determined to be an abnormal parameter (the time when YES is determined in ST20). Is preferred. The time to go back is arbitrarily determined, but is preferably 0.5 to 60 minutes.

  Next, different processing of the information processing apparatus 100C of the third embodiment will be described. FIG. 12 is a flowchart of a different process of the information processing apparatus 100C.

  In the example of FIG. 12, the information processing device 100C executes the process of ST22 after the process of ST6 ends. In step ST22, the information processing device 100C determines whether or not the frequency component of the parameter detected by each of the 13 sensors S1 to S13 (the frequency component converted in ST6) is an abnormal frequency component. The abnormal frequency component is, for example, a frequency component having the highest power (intensity) being changed to a frequency component having the second highest power (preferably the third) by the appearance of a new frequency component in the parameter frequency component. When changed, the newly appearing frequency component is an abnormal frequency component. Further, the abnormal frequency component may be a predetermined abnormal frequency component. The predetermined abnormal frequency component is, for example, a frequency component obtained experimentally.

  In step ST22, when the information processing device 100C determines that at least one of the frequency components of the parameters detected by each of the thirteen sensors S1 to S13 is an abnormal frequency component (YES in step ST22), The process of the information processing device 100C proceeds to step ST8. In step ST22, when the information processing apparatus 100C determines that none of the frequency components of the parameters detected by each of the 13 sensors S1 to S13 has become an abnormal frequency component (step ST22). NO), the process of the information processing apparatus 100C ends.

  The information processing apparatus 100C according to the third embodiment executes the processing after ST8 when it is determined that at least one of the frequency components of the parameters detected by each of the 13 sensors S1 to S13 has become an abnormal frequency component. I do. Therefore, even when the user does not notice the abnormality of the production equipment 1, the screen shown in FIG. 6 or the like can be displayed. The information processing apparatus 100C goes back a specific time (for example, 5 minutes) from the time when the frequency component converted in ST6 is determined to be an abnormal frequency component (the time when YES is determined in ST22), and performs the processing after ST8. It is preferable to carry out. The time to go back is arbitrarily determined, but is preferably 0.5 to 60 minutes.

<Fourth embodiment>
The display systems of the first embodiment and the second embodiment allow a user to recognize a component candidate that is assumed to have caused abnormal vibration. In the fourth embodiment, a notification system that allows a user to recognize a component that is assumed to have caused abnormal vibration will be described.

  FIG. 13 is a diagram illustrating an example of a table (correspondence information) used by the notification system according to the fourth embodiment. In the table of FIG. 13, a sensor to which the frequency component of the detected parameter is related (a sensor to which the frequency component is related) is associated in advance with an abnormal occurrence location (vibration occurrence location). In the example of FIG. 13, “sensor S7, sensor S8, and sensor S4” are defined as the sensors related to the frequency components, and the pipe 7 is associated with these sensors as the abnormality occurrence location. This means that when the sensor related to the frequency component is “sensor S7, sensor S8, sensor S4”, it is highly probable that the abnormality occurrence location is the pipe 7 or the abnormality occurrence location is the pipe 7. Is shown. In the example of FIG. 13, other “sensors related to frequency components” are omitted from the three-point reader, but other “sensors related to frequency components” may be defined.

  The table in FIG. 13 may be constructed by the user based on past experience or the like. The notification system may construct the table of FIG. 13 by machine learning or the like.

  FIG. 14 illustrates a functional configuration example of a notification system 500 according to the third embodiment. The difference from the display systems of the first and second embodiments is that the information processing device 100C is connected to the notification device 400 (notification unit). The notification device 400 includes at least one of a light emitting device (for example, a patrol lamp), a sound output device, and the display device 200 described in the first and second embodiments.

  The table described with reference to FIG. 13 is stored in the storage unit 162 in advance. When the specifying unit 156 specifies a related frequency component from each of the plurality of frequency components converted by the converting unit 154, the specifying unit 156 refers to the table in FIG. 13 to determine an abnormality corresponding to the specified frequency component. Identify the place of occurrence. The specifying unit 156 transmits a notification signal indicating the specified abnormality occurrence location to the notification device 400.

  The notification device 400 notifies the abnormality occurrence location based on the transmitted notification signal. The notification device 400 causes the display device to display the text "An error has occurred in the pipe." The notification device 400 causes the light emitting device to emit light. In addition, the notification device 400 causes the sound output device to output a sound that “an abnormality has occurred in the pipe”. With these notification processes, the user can be made to recognize the location where the abnormality has occurred. Note that the notification device 400 may notify in another form as long as the information can specify the location where the abnormality has occurred. For example, the notification device 400 may show a schematic diagram of the production facility 1 and display the location of the abnormality in the schematic diagram in a specific color.

  FIG. 15 is a flowchart of the information processing apparatus 100C according to the third embodiment. When the process of step ST8 ends, in step ST30, the information processing apparatus 100C refers to the table in FIG. 13 to determine the abnormality occurrence location corresponding to the specified frequency component (the frequency component specified in step ST8). Identify. Next, in step ST32, the specifying unit 156 transmits a display signal indicating the specified abnormality occurrence location to the notification device 400.

  With the notification system of the present embodiment, the user can directly recognize the location where the abnormality has occurred or the location where the possibility that the abnormality has occurred is high. Therefore, it is possible to reduce the time required for the user to specify the abnormal part of the equipment.

[Other Embodiments]
Next, other embodiments will be described. In the example of FIG. 4, the display device 200 and the information processing device 100 have been described as different devices. However, the display device 200 and the information processing device 100 may be the same device. For example, the information processing device 100 may have at least a part of the function of the display device 200.

  In the example of FIG. 14, the notification device 400 and the information processing device 100 </ b> C have been described as different devices. However, the notification device 400 and the information processing device 100C may be the same device. For example, the information processing device 100C may have at least a part of the function of the notification device 400.

[Modification]
The present invention is not limited to the above embodiment, and various modifications and applications are possible. Hereinafter, modified examples applicable to the present invention will be described.

  (1) In the present embodiment, it has been described that each of the 13 sensors is installed at 13 locations of the production facility 1. However, the number of sensors (the number of locations where the sensors are installed) may be another number. For example, the number of sensors may be “2”. Further, the number of sensors may be three or more. More preferably, the number of sensors is 5 or more, further preferably 8 or more, and particularly preferably 10 or more. The upper limit of the number of sensors is not limited. However, if the number is too large, the result of the displayed sensor data (see FIG. 6 and the like) is too large, and it is difficult for the user to perform the analysis. The upper limit of the number of sensors is preferably 1000, more preferably 500, even more preferably 200, particularly preferably 100 and most preferably 50. In addition, as one system, when a plurality of sensors, an information processing device, and a display device are one system (display system and notification system), a plurality of systems are attached to one production facility. It may be. In the plurality of systems, the total number of sensors may exceed the upper limit.

  (2) In the present embodiment, as illustrated in FIG. 3, the plurality (13) of detection units (sensors) include detection units that detect different types of parameters (for example, temperature and pressure). . However, each of the plurality of detection units may detect a different parameter. Further, each of the plurality of detection units may detect the same parameter.

  (3) At least a part of the technical concept described in one of the embodiments may be applied to another embodiment. For example, the concept described in the third embodiment that “the processing of the information processing apparatus starts when the parameter detected by the sensor is an abnormal parameter” is described in another embodiment (for example, the first embodiment). Form). Further, the idea of “not displaying a frequency component different from the related frequency component (see FIG. 9)” described in the second embodiment may be applied to the first embodiment.

  (4) The display system of the above-described embodiment has been described as adopting a configuration in which the user inputs the reference sensor. However, the configuration may be such that the user does not input the reference sensor. In this case, for example, the sensor identification information of all the sensors and the frequency components of all the sensors are displayed, and at least one of the sensor identification information of all the sensors and the frequency component of all the sensors is displayed. May be specified by the user. When the sensor identification information is specified, the display system displays the frequency component of the sensor specified from the sensor identification information and the frequency component related to the frequency component as the related frequency component. Further, when a frequency component is specified, the display system displays the specified frequency component and a frequency component related to the frequency component as a related frequency component.

  Also, the display system does not allow the sensor identification information and the frequency component of the sensor to be specified. Instead, the display system specifies the frequency components related to each other, and specifies the related frequency components and the related frequency components. May be displayed on the sensor that has detected the parameter obtained. With such a configuration, it is not necessary for the user to make a designation, so that the burden on the user can be reduced. Further, the display system may display a sensor that detects a parameter from which the related frequency component is obtained, without displaying the specified related frequency component.

  (5) Further, from the viewpoint of the probability (reliability) of occurrence of an abnormality, a case where a high-power frequency component is related is more significant than a case where a low-power frequency component is related. Some production facilities have a high probability of occurrence. In the case where the display system of the present embodiment is installed in such a production facility, the display system, when a high-power frequency component is related, the related high-power frequency component, You may make it display in a mode different from another frequency component. This allows the user to recognize a place where the probability of occurrence of the abnormality is high.

  (6) Even if no abnormality occurs in the production equipment 1, the frequency components of the parameters of each component may be related. Even in such a case, the display system may display the related frequency component in a different manner from a frequency component different from the related frequency component. Thereby, regardless of whether or not an abnormality has occurred in the production equipment 1, the display processing can be shared, and the processing load on the display system can be reduced.

  When the display system determines that no abnormality has occurred in the production equipment 1, for example, when the display system determines that none of the parameters acquired by the sensor is an abnormal parameter, the related frequency component May be displayed in the same manner as a frequency component different from the related frequency component. Further, when it is determined that an abnormality has occurred in the production equipment 1, for example, when the display system determines that the parameter acquired by the sensor is an abnormal parameter, the related frequency component is replaced with the related frequency component. And different frequency components may be displayed in different modes. This allows the user to recognize that an abnormality has occurred in the production equipment 1.

  The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. Further, it is intended that the inventions described in the embodiments and the respective modified examples are implemented alone or in combination as much as possible.

  DESCRIPTION OF SYMBOLS 1 Production equipment, 2 liquid storage part, 4 pumps, 6 rotary joints, 7 pipes, 8 coating rolls, 9 axes, 10 blades, 12 bearings, 14 motors, 20 films, 100 information processing unit, 105 operation unit, 106 Communication unit, 107 speaker, 152 acquisition unit, 154 conversion unit, 156 identification unit, 157 output unit, 158 notification unit, 160 reception unit, 162 storage unit, 200 display device, 300 display system, 400 notification device, 500 notification system.

Claims (20)

A plurality of detection units each installed at a plurality of locations of the equipment, and detects a parameter indicating the state of the equipment,
A conversion unit that converts each of the plurality of parameters detected by the plurality of detection units into a frequency component,
From each of the plurality of frequency components converted by the conversion unit, a specifying unit that specifies a related frequency component,
A notification unit that notifies information that can specify a detection unit that has detected a parameter from which the related frequency component is obtained.   The notification system according to claim 1, wherein the notification unit displays the related frequency component and the information.   The notification system according to claim 2, wherein the notification unit displays the related frequency component and a frequency component different from the related frequency component in different modes. The plurality of detection units detect a parameter every time,
The notification system according to claim 2, wherein the notification unit displays a time at which the conversion unit acquires a parameter, the related frequency component, and the information. The apparatus further includes a receiving unit that receives designation of a reference detection unit of the plurality of detection units,
The notification unit obtains a reference frequency component converted from the parameter detected by the reference detection unit, information capable of specifying the reference detection unit, a frequency component related to the reference frequency component, and the frequency component. The notification system according to any one of claims 2 to 4, wherein information indicating a detection unit that detects the detected parameter is displayed.   The notification system according to claim 5, wherein the receiving unit receives one of a frequency component related to the reference frequency component and a detecting unit that detects a parameter from which the frequency component is obtained.   The notification system according to claim 5, wherein the specifying unit specifies a frequency component related to the reference frequency component.   The notification unit, while displaying the related frequency component and the information, information that can specify a frequency component different from the related frequency component and a detection unit that has detected a parameter from which the frequency component is obtained. The notification system according to any one of claims 2 to 7, wherein the notification system does not display a message. A plurality of detection units each installed at a plurality of locations of the equipment, and detects a parameter indicating the state of the equipment,
A conversion unit that converts each of the plurality of parameters detected by the plurality of detection units into a frequency component,
From each of the plurality of frequency components converted by the conversion unit, a specifying unit that specifies a related frequency component,
A storage unit that stores correspondence information in which the related frequency components are associated with information that can specify an abnormality occurrence location of the facility,
A notification unit configured to notify information that can specify an abnormality occurrence location corresponding to the related frequency component specified by the specifying unit. The relevant frequency component is:
A combination of one frequency component and another frequency component identical to the one frequency component;
A combination of one frequency component and another frequency component that is an approximate value of the one frequency component;
A combination of one frequency component and another frequency component that is N times (N is an integer of 2 or more) the one frequency component;
10. The method according to claim 1, comprising at least one combination of a combination of one frequency component and another frequency component that is an approximate value of N times the value of the one frequency component. 11. Notification system described.   The notification system according to any one of claims 1 to 10, wherein the plurality of detection units include detection units that detect different types of parameters.   The notifying unit that executes a notifying process when the specifying unit determines that an unrelated frequency component is the related frequency component, further comprising: a notifying unit that performs a notifying process. Notification system.   The notification system according to any one of claims 1 to 12, wherein the conversion unit converts each of the plurality of parameters into a frequency component when a designation from a user is input.   When the parameter detected by the detection unit is an abnormal parameter, or when the frequency component converted by the conversion unit is an abnormal frequency component, the plurality of frequencies converted by the conversion unit 14. The notification system according to any one of claims 1 to 13, wherein a related frequency component is specified in each of the components. A conversion unit that is installed at each of a plurality of locations of the facility, and converts each of the plurality of parameters detected by the plurality of detection units that detects a parameter indicating the state of the facility into a frequency component,
From each of the plurality of frequency components converted by the conversion unit, a specifying unit that specifies a related frequency component,
An information processing apparatus comprising: an output unit that outputs a signal that causes a notifying unit to notify a detecting unit that has detected a parameter from which the related frequency component has been obtained. A conversion unit that is installed at each of a plurality of locations of the facility, and converts each of the plurality of parameters detected by the plurality of detection units that detects a parameter indicating the state of the facility into a frequency component,
From each of the plurality of frequency components converted by the conversion unit, a specifying unit that specifies a related frequency component,
A storage unit that stores information associated with the related frequency component and information that can specify a location where an abnormality has occurred in the facility,
An information processing apparatus comprising: an output unit that outputs a signal that causes a notification unit to notify information that can specify a location of an abnormality corresponding to the related frequency component specified by the specifying unit. A step of converting each of the plurality of parameters detected by the plurality of detection units that are installed at a plurality of locations of the facility, and detecting a parameter indicating the state of the facility into frequency components,
Identifying a relevant frequency component from each of the plurality of transformed frequency components;
Outputting a signal for notifying the notifying unit of the detecting unit that has detected the parameter from which the related frequency component has been obtained. A step of converting each of the plurality of parameters detected by the plurality of detection units that are installed at a plurality of locations of the facility, and detecting a parameter indicating the state of the facility into frequency components,
Identifying a relevant frequency component from each of the plurality of transformed frequency components;
Based on the corresponding information in which the related frequency component and the information that can specify the location where the abnormality has occurred in the equipment are associated, information that can specify the location where the abnormality corresponding to the related frequency component can be specified is sent to the notification unit. Outputting a signal to be notified. On the computer,
A procedure for converting each of the plurality of parameters detected by the plurality of detection units that are installed at a plurality of locations of the facility, and detecting a parameter indicating the state of the facility into frequency components,
From each of the plurality of transformed frequency components, a procedure of identifying a related frequency component,
Outputting a signal for causing the notification unit to notify the detection unit that has detected the parameter from which the related frequency component has been obtained, in a identifiable manner. On the computer,
A procedure for converting each of the plurality of parameters detected by the plurality of detection units that are installed at a plurality of locations of the facility, and detecting a parameter indicating the state of the facility into frequency components,
From each of the plurality of transformed frequency components, a procedure of identifying a related frequency component,
Based on the corresponding information in which the related frequency component and the information that can specify the location where the abnormality has occurred in the equipment are associated, information that can specify the location where the abnormality corresponding to the related frequency component can be specified is sent to the notification unit. And outputting a signal to be notified.