WO2017104146A1

WO2017104146A1 - Diagnostic device, diagnostic system, diagnostic method, and program

Info

Publication number: WO2017104146A1
Application number: PCT/JP2016/059524
Authority: WO
Inventors: 智之三ツ橋; 勉宇高
Original assignee: 富士ゼロックス株式会社
Priority date: 2015-12-14
Filing date: 2016-03-24
Publication date: 2017-06-22
Also published as: CN108351248B; AU2016370880A1; CN108351248A; JP5954604B1; JP2017110919A

Abstract

A sound acquisition unit (31) accepts input of an abnormal sound produced in an image formation device (20) to acquire a sound signal. A frequency analysis unit (32) performs a STFT (short-time Fourier transform) of the acquired sound signal to generate frequency spectrum waveform data. A control unit (33) displays this frequency spectrum waveform on a touch panel, and on the basis of a touch operation by a user, receives a designation of the region containing the signal component of the abnormal sound in the frequency spectrum waveform that is displayed. The frequency analysis unit (32) performs a fast Fourier transform in the time-axis direction with respect to the frequency component included in the designated region. The control unit (33) extracts information of the period and frequency of the abnormal sound from an analysis result of the fast Fourier transform in the frequency analysis unit (32).

Description

Diagnostic device, diagnostic system, diagnostic method and program

The present invention relates to a diagnostic device, a diagnostic system, a diagnostic method, and a program.

Patent Document 1 includes a RAM (Random Access Memory) or ROM (Read Only Memory) that stores normal operation sound of the image forming apparatus, and a microphone that detects the operation sound generated from the image forming apparatus. A system is disclosed. This system identifies an abnormal portion of the image forming apparatus based on the first sound information stored in the RAM or ROM, the second sound information detected by the microphone, and the operation information of the image forming apparatus. To do.

Patent Document 2 discloses an image processing apparatus having an image forming unit that forms an image on a print sheet and a transport unit that transports the print sheet. The image processing apparatus includes a sound converter that converts sound inside the apparatus into an electric signal, a sound analyzer that analyzes the electric signal converted by the sound converter to obtain a component for each frequency, and the sound analyzer And an output unit that outputs a component for each obtained frequency.

Japanese Unexamined Patent Publication No. 2007-079263 Japanese Unexamined Patent Publication No. 2008-290288

At least one embodiment of the present invention extracts frequency and period information of a sound to be extracted from a frequency analysis result representing a temporal change in intensity distribution for each frequency obtained by frequency analysis of sound information. To be able to.

[Diagnostic equipment]
[1] At least one embodiment of the present invention includes an acquisition unit that acquires sound information;
A first analysis unit that performs time-frequency analysis of the sound information and generates frequency analysis result waveform data representing a temporal change in intensity distribution for each frequency;
A display for displaying the frequency analysis result waveform data;
A reception unit that receives designation of a region including a frequency component from the displayed frequency analysis result waveform data;
A second analysis unit for analyzing the frequency component included in the region;
It is a diagnostic apparatus provided with the extraction part which extracts the period and frequency information of the said frequency component from the analysis result by a said 2nd analysis part.

[2] In the diagnostic device according to [1], when the reception unit is specified as the region including the frequency component for a region below a preset frequency, the reception unit may not receive the specification. .

[3] In the diagnostic apparatus according to [1], when the reception unit is designated as the region including the frequency component for a region below a preset frequency, the reception unit analyzes the region. The analysis result by the second analysis unit may be ignored.

[4] In the diagnostic apparatus according to any one of [1] to [3], the display unit displays the frequency analysis result waveform data generated by the first analysis unit on a touch panel,
The accepting unit may accept designation of the region including the frequency component based on a user's touch operation on the touch panel.

[5] The diagnostic device according to any one of [1] to [4] includes a communication unit that communicates with an external device;
A transmission unit that transmits the information on the frequency and the frequency of the frequency component extracted by the extraction unit to the external device via the communication unit;
A receiver that receives data of a frequency analysis result corresponding to the frequency analysis result waveform data generated by the first analyzer from the external device via the communication unit;
The display unit may display the frequency analysis result waveform data generated by the first analysis unit and the frequency analysis result received by the reception unit.

[Diagnostic system]
[6] In at least one embodiment of the present invention, an acquisition unit that acquires sound information and time-frequency analysis of the sound information are performed, and frequency analysis result waveform data representing a time change of an intensity distribution for each frequency is generated. A first analysis unit; a display unit that displays the frequency analysis result waveform data; a reception unit that receives designation of a region including a frequency component from the displayed frequency analysis result waveform data; and the frequency component included in the region A second analysis unit that analyzes the frequency component, an extraction unit that extracts information on the frequency component frequency and frequency from the analysis result of the second analysis unit, a communication unit that communicates with an external device, and the extraction unit A first transmission unit that transmits the information on the period and the frequency of the frequency component extracted by the information to the external device via the communication unit, and the first transmission unit generated by the first analysis unit A diagnostic device comprising a receiving unit for receiving data of a frequency analysis result corresponding to the frequency analysis result waveform data from the external device via the communication unit;
A storage unit that stores data of a plurality of frequency analysis results obtained by performing frequency analysis of abnormal sound information, and when the information on the period and the frequency of the frequency component is received from the diagnostic device, The second frequency analysis result data stored in the storage unit is selected from the received frequency component corresponding to the period and the information of the frequency, and transmitted to the diagnostic device. And a server device including a transmission unit.

[Diagnosis method]
[7] At least one embodiment of the present invention includes an acquisition step of acquiring sound information;
A first analysis step of performing time-frequency analysis of the sound information and generating frequency analysis result waveform data representing a temporal change in intensity distribution for each frequency;
A display step for displaying the frequency analysis result waveform data;
An accepting step of accepting designation of a region including a frequency component from the displayed frequency analysis result waveform data;
A second analysis step of analyzing the frequency component included in the region;
And an extraction step for extracting information on the period and frequency of the frequency component from the analysis result in the second analysis step.

[program]
[8] At least one embodiment of the present invention includes an acquisition step of acquiring sound information;
A first analysis step of performing time-frequency analysis of the sound information and generating frequency analysis result waveform data representing a temporal change in intensity distribution for each frequency;
A display step for displaying the frequency analysis result waveform data;
An accepting step of accepting designation of a region including a frequency component from the displayed frequency analysis result waveform data;
A second analysis step of analyzing the frequency component included in the region;
It is a program for causing a computer to execute an extraction step of extracting information on the period and frequency of the frequency component from the analysis result in the second analysis step.

According to the diagnostic device described in [1], information on the frequency and period of the sound to be extracted is obtained from the frequency analysis result representing the time change of the intensity distribution for each frequency obtained by frequency analysis of the sound information. Can be extracted.

According to the diagnostic device described in [2], it is possible to prevent deterioration in the extraction accuracy of the information on the frequency and period of the sound to be extracted even when a region below a preset frequency is erroneously designated. it can.

According to the diagnostic device described in [3], even when a region below a preset frequency is erroneously designated, it is possible to prevent deterioration in the extraction accuracy of information on the frequency and period of the sound to be extracted. it can.

According to the diagnostic device described in [4], it is possible to specify a region including a frequency component of a sound to be extracted by a user's touch operation.

According to the diagnostic device described in [5], the user obtains the frequency analysis result of the acquired sound information and the frequency analysis result of the sound information recorded in the external device in a device equivalent to the device to be analyzed. In comparison, the cause of the generated sound can be estimated.

According to the diagnostic system described in [6], the frequency and period information of the sound to be extracted is obtained from the frequency analysis result representing the time change of the intensity distribution for each frequency obtained by frequency analysis of the sound information. Can be extracted.

According to the diagnostic method described in [7], the frequency and period information of the sound to be extracted is obtained from the frequency analysis result representing the time change of the intensity distribution for each frequency obtained by frequency analysis of the sound information. Can be extracted.

According to the program described in [8], the frequency and period information of the sound to be extracted is extracted from the frequency analysis result representing the time change of the intensity distribution for each frequency obtained by frequency analysis of the sound information. can do.

It is a system diagram showing a configuration of an abnormal sound diagnosis system of one embodiment of the present invention. It is a block diagram which shows the hardware constitutions of the abnormal sound diagnostic apparatus 10 in one Embodiment of this invention. It is a block diagram which shows the function structure of the abnormal sound diagnostic apparatus 10 in one Embodiment of this invention. It is a block diagram which shows the function structure of the server apparatus 50 in one Embodiment of this invention. It is a figure which shows an example of the information stored in the waveform data storage part 53 in FIG. It is a sequence chart for demonstrating operation | movement of the abnormal sound diagnostic system of one Embodiment of this invention. It is a figure which shows the example of a display screen of the abnormal sound diagnostic apparatus 10 at the time of inputting various information, such as a model name, a serial number, and an operation state. It is a figure for demonstrating the concept of STFT. It is a figure which shows the example of an image of the frequency spectrum waveform based on the analysis result obtained by STFT. It is a figure which shows an example at the time of showing to a user to designate the area | region estimated to be abnormal sound when showing a frequency spectrum waveform to a user. It is a figure which shows an example of the selection area | region 80 selected by the user in the image example of the frequency spectrum waveform of FIG. It is a figure which shows the example of an analysis result of a fast Fourier transform. It is a figure which shows the example of a screen of the abnormal sound diagnostic apparatus 10 by which two frequency spectrum waveforms were displayed. It is a figure which shows the example of an image when another frequency spectrum waveform from which the cause of abnormal noise differs is displayed with respect to the example of a screen shown in FIG.

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a system diagram showing a configuration of an abnormal sound diagnosis system according to an embodiment of the present invention.

As shown in FIG. 1, the abnormal sound diagnosis system according to an embodiment of the present invention includes a portable abnormal sound diagnosis device 10 such as a personal computer, a smartphone, and a tablet terminal device, and a server device 50. .

Note that the present invention can be applied to any device as long as the abnormal sound diagnosis device 10 can be connected to the server device 50 via the communication network. However, in the present embodiment, the abnormal sound diagnosis device 10 will be described using a case of a tablet terminal device including a device such as a microphone capable of acquiring an audio signal and a touch panel capable of touch input.

The abnormal sound diagnosis apparatus 10 is carried by a service person (maintenance personnel) who performs maintenance management, repair, etc. of the image forming apparatus 20 such as a printer used by the end user. The abnormal sound diagnosis apparatus 10 acquires an abnormal sound (abnormal sound) signal generated in the image forming apparatus 20, analyzes the frequency of the acquired abnormal sound signal, and analyzes the frequency of the past abnormal sound signal acquired from the server apparatus 50. This is used to display the resulting waveform and the frequency analysis result waveform of the acquired abnormal sound signal.

The abnormal sound diagnosis apparatus 10 and the server apparatus 50 are connected via a wireless LAN (Local Area Network) terminal 30 such as a Wi-Fi router or the Internet communication network 40 to transmit and receive information.

When the abnormal sound diagnosis device 10 is a mobile phone device, a smartphone, or the like, the abnormal sound diagnosis device 10 and the server device 50 are connected via a mobile phone network to transmit / receive frequency analysis result waveform data. You may do it.

In the abnormal sound diagnosis system of the present embodiment, when an abnormal sound occurs in the image forming apparatus 20 that is a target electronic device installed at the end user's location, a service person carries the abnormal sound diagnosis apparatus 10 and the image forming apparatus. It is envisaged to go to 20 locations. And this service person acquires the abnormal sound signal by recording the abnormal sound generated using the abnormal sound diagnosis apparatus 10, and performs the abnormal sound diagnosis for specifying the cause of the abnormal sound.

It should be noted that it is technically possible to provide a recording function by providing a microphone or the like in the image forming apparatus 20 and to record the abnormal sound using the recording function when the abnormal sound occurs. However, when the image forming apparatus 20 is installed in an end user's office or the like, it is difficult to provide the image forming apparatus 20 with a sound recording function for security reasons.

Next, FIG. 2 shows a hardware configuration of the abnormal sound diagnosis apparatus 10 in the abnormal sound diagnosis system of the present embodiment.

As shown in FIG. 2, the abnormal sound diagnosis apparatus 10 performs wireless communication with the CPU 11, a memory 12 that can temporarily store data, a storage device 13 such as a flash memory, and a wireless LAN terminal 30 to perform data communication. A wireless LAN interface (IF) 14 that performs transmission and reception, an input device 15 such as a touch sensor, a display device 16, and a microphone 17. These components are connected to each other via a control bus 18.

The abnormal sound diagnosis apparatus 10 of the present embodiment includes a touch panel in which a touch sensor for detecting a touch position is provided on the display device 16 as the input device 15. Display is performed using this touch panel, and input from the user is performed.

The CPU 11 executes predetermined processing based on a control program stored in the memory 12 or the storage device 13 to control the operation of the abnormal sound diagnosis device 10. Note that this control program can be obtained by downloading it via the Internet communication network 40 or the mobile phone network and provided to the CPU 11, or the program can be stored in a storage medium such as a CD-ROM. It is also possible to provide it to the CPU 11.

The abnormal sound diagnosis apparatus 10 according to the present embodiment performs the operation described below by executing the control program described above, and assists the service person in identifying the cause of the abnormal sound.

FIG. 3 is a block diagram showing a functional configuration of the abnormal sound diagnosis apparatus 10 realized by executing the control program.

As shown in FIG. 3, the abnormal sound diagnosis apparatus 10 of the present embodiment includes an audio acquisition unit 31, a frequency analysis unit 32, a control unit 33, an audio data storage unit 34, a display unit 35, and a communication unit. 36 and an audio reproduction unit 37.

The display unit 35 displays various data based on the control by the control unit 33. The communication unit 36 communicates with the server device 50 that is an external device. Based on the control by the control unit 33, the audio reproduction unit 37 reproduces the recorded audio data and converts it into an audio signal.

The sound acquisition unit 31 inputs an abnormal sound generated in the image forming apparatus 20 that is an analysis target apparatus and acquires a sound signal.

In the present embodiment, the sound acquisition unit 31 has been described as acquiring an audio signal by inputting an abnormal sound generated in the image forming apparatus 20, but the sound is an example of a sound. The signal is an example of sound information.

The frequency analysis unit 32 performs time-frequency analysis (time-dependent frequency analysis) of the audio signal acquired by the audio acquisition unit 31, and represents a frequency spectrum representing a time change of the signal intensity distribution for each frequency of the acquired abnormal sound signal. Waveform (frequency analysis result) data is generated.

Specifically, the frequency analysis unit 32 generates frequency spectrum waveform data by performing STFT (Short Time Fourier Transform) on the audio signal acquired by the audio acquisition unit 31. The STFT will be described later.

The control unit 33 stores the frequency spectrum waveform data obtained by the frequency analysis unit 32 in the audio data storage unit 34 together with the audio data. And the control part 33 displays the frequency spectrum waveform obtained by the result of STFT on the display part 35 which is a touch panel.

Thereafter, when the user performs a touch operation such as tracing a region that is assumed to be an abnormal signal component in the frequency spectrum waveform displayed on the display unit 35 that is a touch panel, the control unit 33 Based on the user's touch operation, the designation of the region including the abnormal signal component in the displayed frequency spectrum waveform is accepted.

Then, the control unit 33 performs frequency analysis in the time axis direction on the frequency components in the region designated as the region including the abnormal sound signal component in the frequency spectrum waveform data obtained by the frequency analysis unit 32. The frequency analysis unit 32 is instructed to execute a fast Fourier transform (1D-FFT (Fast Fourier Transform)). Therefore, the frequency analysis unit 32 performs fast Fourier transform in the time axis direction on the frequency component included in the designated region.

Then, the control unit 33 extracts the period and frequency information of the abnormal sound from the analysis result of the fast Fourier transform in the frequency analysis unit 32.

It should be noted that even when no abnormal noise is generated, the signal component of the normal operation sound is always included in the low frequency region below the preset frequency. For this reason, the control unit 33 may not accept the designation of a region having a frequency equal to or lower than a preset frequency even when the region is designated as a region including an abnormal sound signal component.

In addition, the control unit 33 uses the acquired period and frequency information of the abnormal sound as well as the model name of the image forming apparatus 20, model information such as a serial number, and operation state information indicating the operation state of the image forming apparatus 20. To the server device 50 via Specifically, the operation status information includes information such as color printing or monochrome printing, double-sided printing or single-sided printing, whether the operation mode is scan, print, or copy, and the type of paper used. Can be included. In this way, the control unit 33 transmits information obtained from the frequency spectrum waveform data obtained by the frequency analysis unit 32 to the server device 50 via the communication unit 36.

The server device 50 obtains the original sound data and the sound data from the spectral waveform data obtained by performing frequency analysis of the sound signal of the abnormal sound generated in the past in a device equivalent to the device of the image forming device 20. Together with information such as the operating state of the device, the cause of the abnormal noise, and how to deal with the abnormal noise.

The server device 50 uses the frequency spectrum waveform (second waveform) corresponding to the frequency spectrum waveform data obtained as a result of frequency analysis by the frequency analysis unit 32 based on the period and frequency information of the abnormal sound transmitted from the abnormal sound diagnosis device 10. Search the frequency analysis result waveform) data. Then, the server device 50 transmits the found frequency spectrum waveform data to the abnormal sound diagnosis device 10 together with information such as audio data stored as abnormal sound sample waveform data.

As a result, the control unit 33 receives the frequency spectrum waveform data corresponding to the frequency spectrum waveform data obtained as a result of the frequency analysis by the frequency analysis unit 32 from the server device 50 via the communication unit 36.

The control unit 33 displays the frequency spectrum waveform obtained by performing frequency analysis of the audio signal acquired by the audio acquisition unit 31 and the spectrum waveform received from the server device 50 on the display unit 35 in parallel.

In addition, when there are a plurality of frequency spectrum waveform data transmitted from the server device 50, the control unit 33 includes the frequency spectrum waveform data obtained by the frequency analysis of the frequency analysis unit 32 among the plurality of frequency spectrum waveform data. Are displayed on the display unit 35 with priority.

Next, the functional configuration of the server device 50 in the abnormal sound analysis system of this embodiment will be described with reference to the block diagram of FIG.

The server device 50 according to the present embodiment includes a communication unit 51, a control unit 52, and a waveform data storage unit 53, as shown in FIG.

The waveform data storage unit 53 stores a plurality of frequency spectrum waveform data obtained by performing frequency analysis of abnormal sound signals generated in the past in an apparatus equivalent to the image forming apparatus 20 that is an analysis target apparatus.

Specifically, as shown in FIG. 5, the waveform data storage unit 53 includes frequency spectrum waveform data obtained by analyzing time-frequency analysis of abnormal sound data acquired in advance and the original sound. Information such as data, causes of abnormal noise, and countermeasures are stored for each model.

Then, when the control unit 52 receives the abnormal sound period or frequency information from the abnormal sound diagnosis apparatus 10, the control unit 52 receives the received abnormal noise data from the waveform data of the plurality of frequency spectra stored in the waveform data storage unit 53. Based on the information on the sound period and frequency, the one similar to the waveform data of the frequency spectrum based on the abnormal sound acquired in the abnormal sound diagnosis apparatus 10 is selected. Then, the control unit 52 transmits the selected waveform data to the abnormal sound diagnosis apparatus 10 via the communication unit 51.

Next, the operation of the abnormal sound diagnosis system of this embodiment will be described with reference to the sequence chart of FIG.

When the abnormal sound diagnosis apparatus 10 performs an abnormal sound diagnosis for identifying the cause of the abnormal sound, an image as shown in FIG. 7 is displayed, and various types of information such as the model name, serial number, and operating state are input. (Step S101).

The abnormal sound diagnosis apparatus 10 sets the operation mode to the voice recording mode, records the abnormal sound with the microphone 17 that is brought close to the abnormal sound generation location of the image forming apparatus 20, and acquires the voice data (step S102).

In the abnormal sound diagnosis apparatus 10, the acquired voice data is subjected to STFT in the frequency analysis unit 32, thereby generating a frequency spectrum waveform representing a time change of the signal intensity distribution for each frequency (step S 103).

As shown in FIG. 8, STFT is a process of performing a Fourier transform every short time and calculating a signal intensity for each frequency component according to a time change. FIG. 9 shows a waveform example when the analysis result obtained by this STFT is an image of one frequency spectrum waveform.

In the frequency spectrum waveform example shown in FIG. 9, the horizontal axis represents time, the vertical axis represents frequency, and the intensity for each frequency is represented by color. In FIG. 9, this color difference is expressed by a hatching pattern. Further, FIG. 9 illustrates the case where the intensity for each frequency is expressed by color, but this intensity can also be expressed by gradation.

In the frequency spectrum waveform example of FIG. 9, it can be seen that the abnormal frequency component 61 is periodically generated at a specific frequency. In the example of the frequency spectrum waveform shown in FIG. 9, the low frequency component is a normal operation sound and not an abnormal frequency component.

When the frequency spectrum waveform as shown in FIG. 9 is obtained, the control unit 33 displays the frequency spectrum waveform on the display unit 35. Then, as shown in FIG. 10, the control unit 33 performs a display that prompts the user to designate a region that is estimated to be abnormal sound, with respect to the displayed frequency spectrum waveform. In the example shown in FIG. 10, the text “Please specify the area that seems to be abnormal noise.” Is displayed, and the user is prompted to specify the area that is estimated to be abnormal noise. I understand.

Then, by referring to such a display, the user who is presented with the frequency spectrum waveform specifies the abnormal frequency component 61, and the abnormal frequency component 61 is included by operating the touch panel, for example. Select an area.

FIG. 11 shows an example of the selection area 80 selected by the user in this way. In the example shown in FIG. 11, it can be seen that a rectangular region including a plurality of abnormal frequency frequency components 61 is designated as the selection region 80 when the user operates the touch panel with the finger 70.

When the selection area 80 is designated in this way, the fast Fourier transform (1D-FFT) for the frequency components included in the selection area 80 is executed by the frequency analysis unit 32 (step S104). FIG. 12 shows an example of analysis results of the fast Fourier transform executed in this way.

In FIG. 12, the period and frequency of the abnormal sound are specified by detecting the period and frequency of the signal of the frequency component subjected to the fast Fourier transform. In addition, since an overtone component etc. are contained in abnormal sound, a some period may be detected, but the period with the strongest signal strength is detected as an abnormal sound period.

In addition, since a signal component having a long period of a predetermined period or more is considered to be normal operation sound or indefinite period noise, such a long-cycle signal component region is set as a determination exclusion region 62 in the determination exclusion region 62. Analysis results are ignored. Alternatively, such a long-cycle signal component region may not be analyzed by the frequency analysis unit 32.

Furthermore, since the low frequency signal component below the predetermined frequency cannot be distinguished from the normal operation sound, such a low frequency signal component region is set as the determination exclusion region 63, and the analysis result in the determination exclusion region 63 is as follows. It will be ignored. Alternatively, such a low-frequency signal component region may not be analyzed by the frequency analysis unit 32.

The abnormal sound diagnosis apparatus 10 transmits the frequency and period information of the abnormal sound together with the model information and the operation state information to the server apparatus 50 based on the analysis result of the fast Fourier transform (step S105). For example, information such that the abnormal frequency is 4 kHz and the abnormal cycle is 2.0 seconds is transmitted to the server device 50.

Then, the server device 50 searches the waveform data storage unit 53 based on the received information, thereby extracting frequency spectrum waveform data corresponding to the received information (step S106).

Then, the server device 50 transmits the extracted frequency spectrum waveform data to the abnormal sound diagnosis device 10 together with information such as the original voice data, the cause of the abnormal noise, and a countermeasure method thereof (step S107).

Then, the abnormal sound diagnosis apparatus 10 receives the frequency spectrum waveform data transmitted from the server apparatus 50 (step S108). Then, the control unit 33 of the abnormal sound diagnosis apparatus 10 displays the received frequency spectrum waveform and the frequency spectrum waveform obtained by the STFT on the display unit 35 (step S109).

FIG. 13 shows a screen example of the abnormal sound diagnosis apparatus 10 in which two frequency spectrum waveforms are displayed in this way.

In the screen example shown in FIG. 13, the frequency spectrum waveform obtained by the STFT in the frequency analysis unit 32 is displayed as “analysis result waveform of abnormal sound recorded this time”, and the frequency spectrum waveform transmitted from the server device 50 is displayed. It can be seen that “Past abnormal noise data” is displayed together with the cause of abnormal noise “Wearing of the photosensitive drum”.

A serviceman who wants to perform an abnormal noise diagnosis compares the two frequency spectrum waveforms and determines whether or not the abnormal noise components in the waveforms are similar, thereby specifying the cause of the abnormal noise.

Further, when a plurality of frequency spectrum waveforms are transmitted from the server device 50, for example, by tracing a frequency spectrum waveform image displayed as “past abnormal sound data” in the horizontal direction by a touch operation, Another frequency spectrum waveform is displayed as shown in FIG.

FIG. 14 shows an example of an image when an abnormal noise frequency spectrum waveform is displayed when the abnormal noise is caused by a “drive system motor failure”.

When a plurality of frequency spectrum waveforms are transmitted in this way, the service person determines whether the frequency spectrum waveform of the abnormal sound acquired this time is more similar to which frequency spectrum waveform is abnormal. Identify the cause of When identifying the cause of this abnormal noise, not only simply comparing the shape of the frequency spectrum waveform, the period or frequency of the abnormal noise component, but also reproducing the original audio data by the audio reproducing unit 37 The cause of the abnormal sound may be specified by listening to and comparing the acquired abnormal sound with the sound corresponding to the frequency spectrum waveform transmitted from the server device 50.

[Modification]
In the above embodiment, the case where the abnormal sound diagnosis device 10 is a tablet terminal device has been described. However, the present invention is not limited to this, and even when another device is used as the abnormal sound diagnosis device. The present invention can be applied. For example, when the operation panel of the image forming apparatus 20 is detachable from the main body, and is configured to be able to communicate with the server apparatus 50 and incorporate an audio signal acquisition function, the operation panel is A diagnostic device may be used.

In the above embodiment, the case where the abnormal sound diagnosis apparatus 10 includes the microphone 17 is described. However, if the abnormal sound diagnosis apparatus 10 has a voice recording function, a collection of microphones and the like is possible. You may make it implement | achieve the acquisition part of an audio | voice signal by connecting a sound apparatus outside.

Moreover, although the said embodiment demonstrated using the case where designation | designated of the area | region estimated to be unusual sound is performed by a user's touch operation, this invention is not limited to such a structure. . When this area is specified by pen input, the noise is generated by other methods, such as when the frequency that is estimated to be abnormal is directly input by numbers, or when the area is specified by mouse operation. The present invention can be applied in the same manner even when an area that is estimated to be designated.

Furthermore, in the above embodiment, the case where the target device for abnormal noise analysis is an image forming apparatus has been described. However, the target device for abnormal noise analysis is not limited to an image forming apparatus. The present invention can be similarly applied to other devices as long as they are devices capable of generating periodic noise.

Although various embodiments have been described above, these embodiments may be combined.
Further, the present disclosure is not limited to the above-described embodiment, and can be implemented in various forms without departing from the gist of the present disclosure.
This application is based on a Japanese patent application filed on December 14, 2015 (Japanese Patent Application No. 2015-243112), the contents of which are incorporated herein by reference.

10 abnormal sound diagnosis device 11 CPU
12 Memory 13 Storage Device 14 Wireless LAN Interface (IF)
DESCRIPTION OF SYMBOLS 15 Input apparatus 16 Display apparatus 17 Microphone 18 Control bus 20 Image forming apparatus 30 Wireless LAN terminal 31 Audio | voice acquisition part 32 Frequency analysis part 33 Control part 34 Audio | voice data storage part 35 Display part 36 Communication part 37 Voice reproduction part 40 Internet communication network 50 Server device 51 Communication unit 52 Control unit 53 Waveform data storage unit 61 Frequency component of

abnormal sound

62, 63 Determination exclusion region 70 Finger 80 Selection region

Claims

An acquisition unit for acquiring sound information;
A first analysis unit that performs time-frequency analysis of the sound information and generates frequency analysis result waveform data representing a temporal change in intensity distribution for each frequency;
A display for displaying the frequency analysis result waveform data;
A reception unit that receives designation of a region including a frequency component from the displayed frequency analysis result waveform data;
A second analysis unit for analyzing the frequency component included in the region;
An extraction unit for extracting information on the period and frequency of the frequency component from the analysis result by the second analysis unit;
Diagnostic device with
The diagnostic device according to claim 1, wherein when the reception unit is designated as the region including the frequency component for a region below a preset frequency, the designation is not accepted.
When the reception unit is designated as the region including the frequency component for a region below a preset frequency, the reception unit does not analyze by the second analysis unit or ignores the analysis result by the second analysis unit. Item 2. The diagnostic device according to Item 1.
The display unit displays the frequency analysis result waveform data generated by the first analysis unit on a touch panel,
The diagnostic device according to claim 1, wherein the reception unit receives designation of the region including the frequency component based on a user's touch operation on the touch panel.
A communication unit for communicating with an external device;
A transmission unit that transmits the information on the frequency and the frequency of the frequency component extracted by the extraction unit to the external device via the communication unit;
A reception unit that receives data of the frequency analysis result corresponding to the frequency analysis result waveform data generated by the first analysis unit from the external device via the communication unit;
The diagnosis according to any one of claims 1 to 4, wherein the display unit displays the frequency analysis result waveform data generated by the first analysis unit and the frequency analysis result received by the reception unit. apparatus.
An acquisition unit that acquires sound information, a first analysis unit that performs time-frequency analysis of the sound information, and generates frequency analysis result waveform data representing a temporal change in intensity distribution for each frequency, and the frequency analysis result waveform data A display unit for displaying; a receiving unit for receiving designation of a region including a frequency component from the displayed frequency analysis result waveform data; a second analyzing unit for analyzing the frequency component included in the region; and the second analysis An extraction unit that extracts information on the period and frequency of the frequency component from the analysis result by the unit, a communication unit that communicates with an external device, and the period and the frequency of the frequency component extracted by the extraction unit A first transmitter that transmits the information to the external device via the communication unit; and a frequency corresponding to the frequency analysis result waveform data generated by the first analyzer A diagnostic device that includes a receiving unit for the data of the analysis result via the communication unit received from the external device,
A storage unit that stores data of a plurality of frequency analysis results obtained by performing frequency analysis of abnormal sound information, and when the information on the period and the frequency of the frequency component is received from the diagnostic device, The second frequency analysis result data stored in the storage unit is selected from the received frequency component corresponding to the period and the information of the frequency, and transmitted to the diagnostic device. A server device comprising a transmission unit;
Diagnostic system with
An acquisition step for acquiring sound information;
A first analysis step of performing time-frequency analysis of the sound information and generating frequency analysis result waveform data representing a temporal change in intensity distribution for each frequency;
A display step for displaying the frequency analysis result waveform data;
An accepting step of accepting designation of a region including a frequency component from the displayed frequency analysis result waveform data;
A second analysis step of analyzing a frequency component included in the region;
A diagnostic method comprising: an extraction step for extracting information on a period and frequency of the frequency component from the analysis result in the second analysis step.
An acquisition step for acquiring sound information;
A first analysis step of performing time-frequency analysis of the sound information and generating frequency analysis result waveform data representing a temporal change in intensity distribution for each frequency;
A display step for displaying the frequency analysis result waveform data;
An accepting step of accepting designation of a region including a frequency component from the displayed frequency analysis result waveform data;
A second analysis step of analyzing a frequency component included in the region;
A program for causing a computer to execute an extraction step of extracting information on a period and frequency of the frequency component from an analysis result in the second analysis step.