Measuring device, application operation method, and program

Abstract

To provide a measuring device, an application operation method, and a program that allow intuitive operation to set the display time range and selected time range for time domain data displayed on a screen. [Solution] The system comprises a touch-operable display, a data acquisition unit that acquires time-series changes in the amplitude of sound waves emitted by vibrations of a bearing under evaluation as time-domain data, and a control unit that displays the acquired time-domain data in a first display area on the display, performs FFT processing on the time-domain data within a specified FFT processing range in the first display area to generate frequency-domain data, and displays the frequency-domain data in a second display area different from the first display area on the display. The control unit moves a cursor frame for setting the FFT processing range by dragging in the first display area, and scrolls the display range in the time axis direction in the first display area by swiping within the area of ​​the cursor frame.

Description

Technical Field

[0001] The present invention relates to a measuring device, an operation method of an application, and a program.

Background Art

[0002] Conventionally, fault diagnosis of a bearing has been performed by subjecting time domain data of vibration and sound waves during bearing operation to FFT processing. Patent Document 1 below discloses a time domain data processing system configured by a computer having a general configuration as a general-purpose electronic computer, in which the range of the display time zone and the selection time zone of time domain data is set using an input device such as a keyboard or a mouse, and an analysis result including the FFT processing result is displayed in a signal processing / analysis result display window.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In order to easily grasp the state of an operating bearing on-site, it is desired that an operator can set the range of the display time zone and the selection time zone of time domain data by intuitive operation with a more minimal configuration.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a measuring device, an operation method of an application, and a program that enable setting of the range of the display time zone and the selection time zone of time domain data by intuitive operation.

Means for Solving the Problems

[0006] To achieve the above objective, a measuring device according to one aspect of the present invention includes a touch-operable display, a data acquisition unit that acquires time-series changes in the amplitude of sound waves emitted by vibrations of a bearing under evaluation as time-domain data, and a control unit that displays the acquired time-domain data in a first display area on the display, performs FFT processing on the time-domain data within a specified FFT processing range in the first display area to generate frequency-domain data, and displays the frequency-domain data in a second display area different from the first display area on the display. The control unit moves a cursor frame for setting the FFT processing range in the first display area by dragging, and scrolls the display range in the time axis direction in the first display area by swiping within the area of ​​the cursor frame.

[0007] In the above configuration, a minimal setup allows for intuitive operation to set the display range of time-domain data and the FFT processing range displayed on the screen. This makes it easier to understand the condition of the bearing being evaluated, regardless of the skill level or experience of the field worker.

[0008] In a preferred embodiment of the measuring device, the control unit may move the cursor frame within the first display area while maintaining the FFT processing range defined by the cursor frame when the display range in the time axis direction of the first display area is scrolled by a swipe operation.

[0009] In a preferred configuration of the measuring device, the control unit preferably scrolls the display range in the time axis direction of the first display area while fixing the position of the cursor frame in the time axis direction to one end of the first display area when the display range in the time axis direction of the first display area is scrolled by a swipe operation while one end of the cursor frame in the time axis direction is positioned at the one end of the first display area in the time axis direction.

[0010] This prevents the display range in the time axis direction of the first display area from ceasing to scroll when a swipe operation is performed, even when one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction.

[0011] In a preferred configuration of the measuring device, the control unit preferably reduces the FFT processing range while fixing one end of the cursor frame in the time axis direction when the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction.

[0012] This reduces the unnatural feeling that occurs when the cursor frame stops moving after one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction, and the cursor frame is still dragged.

[0013] In a preferred configuration of the measuring device, the control unit preferably expands the display range in the time axis direction of the first display area by a pinch-in operation within the area of ​​the cursor frame, and reduces the display range in the time axis direction of the first display area by a pinch-out operation within the area of ​​the cursor frame.

[0014] This allows for intuitive modification of the display range in the time axis direction of the first display area.

[0015] In a preferred configuration of the measuring device, the control unit preferably reduces the FFT processing range by pinching in at both ends of the time axis direction of the cursor frame, and expands the FFT processing range by pinching out at both ends of the time axis direction of the cursor frame.

[0016] This allows for intuitive modification of the FFT processing range.

[0017] As a desirable aspect of the measuring device, when the upper end or the lower end of the cursor frame is dragged, the control unit preferably moves the cursor frame, and when one end of the cursor frame in the time axis direction is dragged, the control unit preferably changes the FFT processing range while fixing the other end of the cursor frame in the time axis direction.

[0018] This enables intuitive change of the FFT processing range.

[0019] As a desirable aspect of the measuring device, the control unit preferably highlights the moving cursor frame.

[0020] This makes it easier for on-site workers to recognize the change in the FFT processing range accompanying the movement of the cursor frame.

[0021] As a desirable aspect of the measuring device, the control unit preferably displays at least a setting change screen for changing the FFT processing range on the display.

[0022] This enables explicit change of the FFT processing range.

[0023] As a desirable aspect of the measuring device, when one end of the cursor frame in the time axis direction is arranged at the position of one end of the first display area in the time axis direction and the cursor frame is dragged, the control unit preferably displays a pop-up screen on the display for selecting whether to display the FFT processing range setting screen.

[0024] This facilitates transition to the setting change screen for changing the FFT processing range.

[0025] To achieve the above object, an operation method of an application according to an aspect of the present invention is an operation method of an application that operates on a touch-operable display, and includes steps of: acquiring, as time-domain data, a time-series change in the amplitude of a sound wave generated by the vibration of a bearing to be evaluated; displaying the acquired time-domain data in a first display area on the display; performing FFT processing on the time-domain data within a specified FFT processing range in the first display area to generate frequency-domain data, and displaying the frequency-domain data in a second display area different from the first display area on the display. In the first display area, a cursor frame for setting the FFT processing range is moved by a drag operation, and within the area of the cursor frame, the display range in the time-axis direction in the first display area is scrolled by a swipe operation.

[0026] With the above configuration, it is possible to set the display range and FFT processing range of the time-domain data displayed on the display by intuitive operations. As a result, it becomes easier to grasp the state of the bearing to be evaluated regardless of the skill differences and proficiency levels of on-site workers.

[0027] As a desirable aspect of the operation method of the application, when the display range in the time-axis direction in the first display area is scrolled by a swipe operation, the cursor frame may be moved within the first display area while maintaining the FFT processing range by the cursor frame.

[0028] As a desirable aspect of the operation method of the application, when one end of the cursor frame in the time-axis direction is arranged at one end position of the first display area in the time-axis direction and the display range in the time-axis direction in the first display area is scrolled by a swipe operation, it is preferable to scroll the display range in the time-axis direction in the first display area while fixing the time-axis direction position of the cursor frame at one end of the first display area.

[0029] This prevents the display range in the time axis direction of the first display area from ceasing to scroll when a swipe operation is performed, even when one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction.

[0030] A preferred mode of operation for the application is to reduce the FFT processing range while fixing one end of the cursor frame in the time axis direction when the cursor frame is dragged after being positioned at the position of one end of the first display area in the time axis direction.

[0031] This reduces the unnatural feeling that occurs when the cursor frame stops moving after one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction, and the cursor frame is still dragged.

[0032] A preferred mode of operation for the application is to expand the display range in the time axis direction of the first display area by pinching in within the area of ​​the cursor frame, and to reduce the display range in the time axis direction of the first display area by pinching out within the area of ​​the cursor frame.

[0033] This allows for intuitive modification of the display range in the time axis direction of the first display area.

[0034] A preferred method of operating the application is to reduce the FFT processing range by pinching in at both ends of the time axis direction of the cursor frame, and to expand the FFT processing range by pinching out at both ends of the time axis direction of the cursor frame.

[0035] This allows for intuitive modification of the FFT processing range.

[0036] A preferred method of operating the application is to move the cursor frame when the upper or lower end of the cursor frame is dragged, and to change the FFT processing range while fixing the other end of the cursor frame in the time axis direction when one end of the cursor frame in the time axis direction is dragged.

[0037] This allows for intuitive modification of the FFT processing range.

[0038] A preferred mode of operation for the application is to highlight the cursor frame while it is moving.

[0039] This makes it easier for on-site workers to recognize changes in the FFT processing range that occur when the cursor frame moves.

[0040] A preferred mode of operation for the application is to display a settings change screen on the display for changing at least the FFT processing range.

[0041] This allows you to explicitly change the FFT processing range.

[0042] A preferred mode of operation for the application is to display a pop-up screen on the display for selecting whether or not to display the settings change screen when the cursor frame is dragged after one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction.

[0043] This makes it easier to access the settings screen for changing the FFT processing range.

[0044] To achieve the above objective, a program according to one aspect of the present invention executes the operation method of the above application.

[0045] The above program allows for intuitive operation to set the display range and FFT processing range of time-domain data displayed on the screen. This makes it easier to understand the condition of the bearing being evaluated, regardless of the skill level or experience of the field worker.

[0046] A preferred mode of the program is to highlight the cursor frame while it is moving.

[0047] This makes it easier for on-site workers to recognize changes in the FFT processing range that occur when the cursor frame moves.

[0048] A preferred embodiment of the program is to display a settings change screen on the display for changing at least the FFT processing range.

[0049] This allows you to explicitly change the FFT processing range.

[0050] In a preferred mode of the program, when one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction and the cursor frame is dragged, it is preferable to display a pop-up screen on the display for selecting whether or not to display the settings change screen.

[0051] This makes it easier to access the settings screen for changing the FFT processing range. [Effects of the Invention]

[0052] According to the present invention, a measuring device, an application operation method, and a program are obtained that allow the display time range and selection time range of time domain data displayed on a display to be set by intuitive operation, regardless of the skill level or proficiency of the on-site worker. [Brief explanation of the drawing]

[0053] [Figure 1] Figure 1 is a block diagram showing an example of a schematic configuration of a measuring device according to an embodiment. [Figure 2] Figure 2 is a schematic diagram showing a specific example of a measuring device according to the embodiment. [Figure 3] Figure 3 is a flowchart showing an example of application operation in the measuring device according to this embodiment. [Figure 4A] Figure 4A is Figure 1, which shows an example of moving the cursor frame using a drag operation. [Figure 4B] Figure 4B is Figure 2, which shows an example of moving the cursor frame using a drag operation. [Figure 4C] Figure 4C is Figure 3, which shows an example of moving the cursor frame using a drag operation. [Figure 5] Figure 5 is a subflowchart showing the first example of the display control process. [Figure 6A] Figure 6A is the first figure showing a first example of scrolling using a swipe gesture. [Figure 6B] Figure 6B is the second figure showing the first example of scrolling using a swipe gesture. [Figure 6C] Figure 6C is Figure 3, which shows the first example of scrolling using a swipe gesture. [Figure 7] Figure 7 is a subflowchart showing a second example of the display control process. [Figure 8A] Figure 8A is Figure 1, which shows a second example of scrolling using a swipe gesture. [Figure 8B] Figure 8B is the second figure showing a second example of scrolling using a swipe gesture. [Figure 8C] Figure 8C is Figure 3, which shows a second example of scrolling using a swipe gesture. [Figure 8D] Figure 8D is Figure 4, which shows a second example of scrolling using a swipe gesture. [Figure 9] Figure 9 is a subflowchart showing a third example of the display control process. [Figure 10A] Figure 10A is Figure 1, which shows an example of zooming in / out of the display area using pinch-in / pinch-out operations within the cursor frame. [Figure 10B]Figure 10B is the second figure showing an example of zooming in / out of the display area using pinch-in / pinch-out operations within the cursor frame. [Figure 10C] Figure 10C is the third figure showing an example of zooming in / out of the display area using pinch-in / pinch-out gestures within the cursor frame. [Figure 11] Figure 11 is a subflowchart showing a fourth example of the display control process. [Figure 12A] Figure 12A is the first figure showing an example of expanding / contracting the FFT processing range by pinching in / pinch out at both ends of the cursor frame along the time axis. [Figure 12B] Figure 12B is the second figure showing an example of expanding / contracting the FFT processing range by pinching in / pinch out at both ends of the cursor frame along the time axis. [Figure 12C] Figure 12C is the third figure showing an example of expanding / contracting the FFT processing range by pinching in / pinch out at both ends of the cursor frame along the time axis. [Figure 13] Figure 13 is a subflowchart showing a fifth example of the display control process. [Figure 14A] Figure 14A is Figure 1, which shows an example of moving the cursor frame by dragging the top and bottom edges of the cursor frame. [Figure 14B] Figure 14B is the second figure showing an example of moving the cursor frame by dragging the top and bottom edges of the cursor frame. [Figure 15] Figure 15 is a subflowchart showing the sixth example of the display control process. [Figure 16A] Figure 16A is the first figure showing an example of changing the FFT processing range by dragging the left edge of the cursor frame. [Figure 16B] Figure 16B is the second figure showing an example of changing the FFT processing range by dragging the left edge of the cursor frame. [Figure 17A] Figure 17A is the first figure showing an example of changing the FFT processing range by dragging the right edge of the cursor frame. [Figure 17B] Figure 17B is the second figure showing an example of changing the FFT processing range by dragging the right edge of the cursor frame. [Figure 18] Figure 18 is a subflowchart showing the seventh example of the display control process. [Figure 19] Figure 19 shows an example of a pop-up screen. [Figure 20] Figure 20 shows an example of a settings change screen. [Figure 21] Figure 21 is a subflowchart showing the eighth example of the display control process. [Figure 22] Figure 22 is a subflowchart showing an example of a configuration change process. [Figure 23] Figure 23 is a schematic diagram showing a specific example of a measuring device according to the first modified embodiment. [Figure 24A] Figure 24A is Figure 1, which shows an example of scrolling operation by dragging the cursor bar. [Figure 24B] Figure 24B is the second figure showing an example of scrolling operation by dragging the cursor bar. [Figure 25] Figure 25 is a subflowchart showing the ninth example of the display control process. [Figure 26] Figure 26 is a schematic diagram showing a specific example of a measuring device according to a second modified embodiment. [Figure 27] Figure 27 is a schematic diagram showing a specific example of a measuring device according to a third modified embodiment. [Modes for carrying out the invention]

[0054] Hereinafter, embodiments for carrying out the invention (hereinafter referred to as "embodiments") will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiments described below. Furthermore, the components in the embodiments described below include those that are easily conceivable by those skilled in the art, those that are substantially the same, and those that fall within the so-called equivalent range. Moreover, the components disclosed in the embodiments described below can be combined as appropriate.

[0055] Figure 1 is a block diagram showing an example of the schematic configuration of a measuring device according to the embodiment. Figure 2 is a schematic diagram showing a specific example of a measuring device according to the embodiment.

[0056] The application according to this embodiment is a program executed by the CPU (Central Processing Unit), RAM (Random Access Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), ROM (Read Only Memory), GPU (Graphics Processing Unit), etc., of a smartphone or tablet that constitutes the measuring device 100. Here, we will first describe the general configuration of the measuring device 100 for executing the application according to this embodiment.

[0057] As shown in Figure 1, the measuring device 100 according to this embodiment includes a UI (User Interface) unit 1, a data acquisition unit 2, a control unit 3, and a storage unit 4.

[0058] The UI unit 1 is a display that can be operated by the operator of the measuring device 100 according to the embodiment. Specifically, the UI unit 1 includes a display unit 11 and an operation unit 12. The UI unit 1 is constructed by superimposing, for example, a display panel that constitutes the display unit 11 and a touch panel that constitutes the operation unit 12. Hereinafter, the UI unit 1 will also be simply referred to as "display 1". In this disclosure, "touch operation" refers to any operation in which a finger is touched to the display 1 (touch panel).

[0059] Examples of display panels constituting the display unit 11 include liquid crystal display panels (LCD) and organic light-emitting diode (OLED) displays. The display panel constituting the display unit 11 is not limited to LCD or OLED, and may also be an inorganic EL display panel (micro-LED, mini-LED), for example. This disclosure is not limited by the display method of the display panel constituting the display unit 11.

[0060] Examples of touch panels constituting the operation unit 12 include, for example, a capacitive touch panel. However, the touch panel constituting the operation unit 12 is not limited to a capacitive touch panel; for example, a resistive touch panel may also be used. This disclosure is not limited by the detection method of the touch panel constituting the operation unit 12.

[0061] The data acquisition unit 2 is a microphone mounted on a smartphone or tablet that constitutes the measuring device 100 according to the embodiment. The control unit 3 is composed of the CPU of the smartphone or tablet that constitutes the measuring device 100 according to the embodiment. The storage unit 4 is composed of RAM, EEPROM, ROM, etc. of the smartphone or tablet that constitutes the measuring device 100 according to the embodiment.

[0062] The following describes a specific example of application operation in the measuring device 100 according to this embodiment. Figure 3 is a flowchart showing an example of application operation in the measuring device according to this embodiment.

[0063] When an operator of the measuring device 100 according to the embodiment touches the display 1 (touch panel) to execute the application according to the embodiment, the control unit 3 executes the application startup process according to the embodiment (step S101). Specifically, for example, an example is given in which the application according to the embodiment is executed by tapping an application icon displayed on the display panel of the measuring device 100.

[0064] In this disclosure, "tap operation" refers to a touch operation in which the user briefly and lightly touches and releases the display screen of Display 1 (touch panel) or an object displayed on Display 1. In this disclosure, "object" refers to an application icon displayed on Display 1, or a visual element such as a button or cursor on an application.

[0065] The control unit 3 controls the data acquisition unit 2 to acquire the change in sound pressure (amplitude) of sound waves emitted by the vibration of the bearing under evaluation as vibration data (step S102), and stores the acquired vibration data in the storage unit 4 and displays it on the display 1 (step S103).

[0066] Figure 2 illustrates an example of how acquired vibration data is displayed in the first display area DA1 on the display 1. The horizontal axis of the first display area DA1 represents the time axis direction (Sec) of the vibration data, and the vertical axis represents the amplitude (Int) of the vibration intensity of the vibration data. In this disclosure, "vibration data" is time-domain data showing the time-series change in sound pressure (amplitude) of sound waves emitted by the vibration of the bearing under evaluation. Hereinafter, the vibration data displayed in the first display area DA1 on the display 1 will also be simply referred to as "time-domain data".

[0067] Furthermore, in this disclosure, the first display area DA1 shows a dashed cursor frame CF indicating the range in the frequency axis direction when performing Fast Fourier Transform (FFT) processing. The control unit 3 acquires the FFT processing range specified by the cursor frame CF in the first display area DA1 (step S104), performs FFT processing on the time domain data within the acquired FFT processing range (step S105), and displays the power spectrum in the frequency domain after FFT processing on the display 1 (step S106).

[0068] In the measuring device 100 shown in Figure 2, an example is shown in which the power spectrum in the frequency domain, obtained by performing FFT processing on time domain data within the FFT processing range specified by the cursor frame CF in the first display area DA1, is displayed as "PS (default)" in the second display area DA2 on the display 1. The horizontal axis of the second display area DA2 represents the frequency axis direction (Hz) of the power spectrum, and the vertical axis represents the gain (dB) of the power spectrum. Hereinafter, the power spectrum in the frequency domain displayed in the second display area DA2 on the display 1 will also be referred to as "frequency domain data".

[0069] In step S107 shown in Figure 3, the control unit 3 determines whether or not a touch operation has been performed on the display 1 (touch panel) (step S107). If no touch operation has been performed (step S107; No), the process returns to step S102, the time-domain data displayed in the first display area DA1 is updated (step S103), and further, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0070] When a touch operation is performed on display 1 (touch panel) (step S107; Yes), display control processing corresponding to that touch operation is executed (step S200).

[0071] Here, we will first explain how to move the cursor frame CF by dragging in the first display area DA1 on display 1, with reference to Figures 4A, 4B, 4C, and 5.

[0072] In this disclosure, "drag operation" refers to an operation in which an object displayed on display 1 is selected (grabbed) by touching the object, the touch position is moved while continuing to touch the selected object to move the display position of the object, and the finger is released from display 1 at the desired position to deselect the object.

[0073] Figure 4A is the first figure showing an example of cursor frame movement by drag operation. Figure 4B is the second figure showing an example of cursor frame movement by drag operation. Figure 4C is the third figure showing an example of cursor frame movement by drag operation. Figure 5 is a subflowchart showing the first example of display control processing.

[0074] Figure 4A illustrates a configuration in which the cursor frame CF is displayed aligned to one end of the first display area DA1 in the time axis direction. In the first example of the display control process shown in Figure 5, the control unit 3 determines whether or not a drag operation has been performed on the cursor frame CF (step S201).

[0075] If no drag operation is performed on the cursor frame CF (step S201; No), the process returns to the one shown in Figure 3, and the processes from step S102 onwards are repeatedly executed to update the time-domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0076] When a drag operation is performed on the cursor frame CF (step S201; Yes), the control unit 3 determines whether the cursor frame CF can be moved within the first display area DA1 (step S202). If the cursor frame CF cannot be moved (step S202; No), the process returns to the process shown in Figure 3, and the processes from step S102 onwards are repeatedly executed to update the time-domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0077] In the first example of the display control process shown in Figure 5, the control unit 3 determines that the cursor frame CF is immobile if, for example, a drag operation is performed on the cursor frame CF to the right, beyond one end (right end) in the time axis direction of the first display area DA1. The control unit 3 also determines that the cursor frame CF is immobile if, for example, a drag operation is performed on the cursor frame CF to the left, beyond the other end (left end) in the time axis direction of the first display area DA1.

[0078] If the cursor frame CF is movable (step S202; Yes), the display position of the cursor frame CF within the first display area DA1 is moved in response to the drag operation (step S203).

[0079] If the cursor frame CF cannot be moved (step S202; No), the control unit 3 reduces the FFT processing range specified by the cursor frame CF (step S204).

[0080] Then, the control unit 3 moves the cursor frame CF by dragging, or reduces the FFT processing range specified by the cursor frame CF, and returns to the process shown in Figure 3, repeatedly executing the processes from step S102 onwards to update the time-domain data displayed in the first display area DA1 (step S103), and further performs FFT processing on the time-domain data within the FFT processing range acquired in step S104 (step S105), and updates the frequency-domain data displayed in the second display area DA2 (step S106).

[0081] In Figures 4A, 4B, and 4C, the power spectrum in the frequency domain obtained by performing FFT processing on the time domain data within the FFT processing range specified by the cursor frame CF in the first display area DA1 shown in Figure 4A is defined as "PS (default)".

[0082] When the cursor frame CF shown in Figure 4A is dragged to the position shown in Figure 4B, the control unit 3, in step S103 after returning to the process shown in Figure 3, updates the FFT processing range in accordance with the movement of the cursor frame CF, and in step S106, as shown in Figure 4B, displays the power spectrum PS(shift) of the frequency domain obtained by performing FFT processing on the time domain data of the updated FFT processing range in the second display area DA2.

[0083] When a drag operation is performed on the cursor frame CF shown in Figure 4B, the control unit 3, as shown in Figure 4C, fixes one end of the cursor frame CF (the left end of the first display area DA1 in the example shown in Figure 4C) to the edge of the first display area DA1 (the left end of the first display area DA1 in the example shown in Figure 4C), and reduces the range of the cursor frame CF in the time axis direction. Then, in step S103, after returning to the process shown in Figure 3, the FFT processing range is updated in accordance with the reduction of the cursor frame CF, and in step S106, as shown in Figure 4C, the power spectrum PS (narrow) of the frequency domain obtained by performing FFT processing on the time domain data of the updated FFT processing range is displayed in the second display area DA2, and a caution display CD is displayed to indicate that the resolution has decreased due to the reduction of the FFT processing range. This makes it easier to understand that the resolution of the frequency domain data has decreased due to the reduction of the FFT processing range.

[0084] The first example of the display control processing described above allows for the setting of the display range and FFT processing range of time-domain data displayed on display 1 through a minimal configuration and intuitive operation. This makes it easier to understand the condition of the bearing being evaluated, regardless of the skill level or experience of the field worker.

[0085] Furthermore, when the cursor frame CF is dragged while one end of the cursor frame CF in the time axis direction is positioned at the other end of the first display area DA1 in the time axis direction, the unnatural feeling of the cursor frame CF not moving can be reduced.

[0086] Next, a method for scrolling the display range in the time axis direction of the first display area DA1 by swiping on the display 1 will be described with reference to Figures 6A, 6B, 6C, and 7.

[0087] In this disclosure, "swipe operation" refers to an operation in which a region is selected by touching an area on the display 1 excluding objects, the display range within the selected region is scrolled while continuing to touch the selected region, and the region is deselected by lifting the finger from the display 1 at the desired position.

[0088] Figure 6A is the first figure showing the first example of scrolling operation by swipe operation. Figure 6B is the second figure showing the first example of scrolling operation by swipe operation. Figure 6C is the third figure showing the first example of scrolling operation by swipe operation. Figure 7 is a subflowchart showing the second example of display control processing.

[0089] In the second example of the display control process shown in Figure 7, the control unit 3 determines whether or not a swipe operation has been performed on the first display area DA1 (step S211).

[0090] If no swipe operation is performed on the first display area DA1 (step S211; No), the process returns to the one shown in Figure 3, and the processes from step S102 onwards are repeatedly executed to update the time-domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0091] When a swipe operation is performed on the first display area DA1 (step S211; Yes), the control unit 3 scrolls the display range in the time axis direction of the first display area DA1 (step S212).

[0092] Then, after scrolling the display range in the time axis direction in the first display area DA1 by swipe operation, the control unit 3 returns to the process shown in Figure 3 and repeatedly executes the processes from step S102 onwards to update the time domain data displayed in the first display area DA1 (step S103). Furthermore, it performs FFT processing on the time domain data within the FFT processing range acquired in step S104 (step S105) to update the frequency domain data displayed in the second display area DA2 (step S106).

[0093] In Figures 6A, 6B, and 6C, the power spectrum in the frequency domain obtained by performing FFT processing on the time domain data within the FFT processing range specified by the cursor frame CF in the first display area DA1 shown in Figure 6A is designated as "PS (default)".

[0094] When a swipe operation is performed in the first display area DA1 shown in Figure 6A, the control unit 3, in step S103 after returning to the process shown in Figure 3, updates the FFT processing range in accordance with the scrolling of the display range in the time axis direction in the first display area DA1, and in step S106, as shown in Figure 6B, displays the frequency domain power spectrum PS(shift_st1) obtained by performing FFT processing on the time domain data of the updated FFT processing range in the second display area DA2.

[0095] If a swipe operation is performed in the first display area DA1 shown in Figure 6B, the control unit 3, in step S103 after returning to the process shown in Figure 3, updates the FFT processing range in accordance with the scrolling of the display range in the time axis direction in the first display area DA1, and in step S106, as shown in Figure 6C, displays the frequency domain power spectrum PS(shift_st2) obtained by performing FFT processing on the time domain data of the updated FFT processing range in the second display area DA2.

[0096] The second example of the display control processing described above allows for the setting of the display range and FFT processing range of time-domain data displayed on display 1 through a minimal configuration and intuitive operation. This makes it easier to understand the condition of the bearing being evaluated, regardless of the skill level or experience of the field worker.

[0097] Next, a method for scrolling the display range in the time axis direction of the first display area DA1 while maintaining the FFT processing range specified by the cursor frame CF by swiping on the display 1 will be described with reference to Figures 8A, 8B, 8C, 8D, and 9.

[0098] Figure 8A is Figure 1, showing a second example of scrolling using a swipe gesture. Figure 8B is Figure 2, showing a second example of scrolling using a swipe gesture. Figure 8C is Figure 3, showing a second example of scrolling using a swipe gesture. Figure 8D is Figure 4, showing a second example of scrolling using a swipe gesture. Figure 9 is a subflowchart showing a third example of display control processing.

[0099] In the third example of the display control process shown in Figure 9, the control unit 3 determines whether or not a swipe operation has been performed on the first display area DA1 (step S221).

[0100] If no swipe operation is performed on the first display area DA1 (step S221; No), the process returns to the one shown in Figure 3, and the processes from step S102 onwards are repeatedly executed to update the time-domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0101] When a swipe operation is performed on the first display area DA1 (step S221; Yes), the control unit 3 determines whether the cursor frame CF can move within the first display area DA1 (step S222).

[0102] If the cursor frame CF is immobile (step S222; No), the control unit 3 fixes the display position of the cursor frame CF in the first display area DA1 and scrolls the display range in the time axis direction in the first display area DA1 (step S223).

[0103] If the cursor frame CF is movable (step S222; Yes), the control unit 3 scrolls the display range in the time axis direction in the first display area DA1 while maintaining the FFT processing range specified by the cursor frame CF (step S224).

[0104] Then, after scrolling the display range in the time axis direction in the first display area DA1 by swipe operation, the control unit 3 returns to the process shown in Figure 3 and repeatedly executes the processes from step S102 onwards to update the time domain data displayed in the first display area DA1 (step S103). Furthermore, it performs FFT processing on the time domain data within the FFT processing range acquired in step S104 (step S105) to update the frequency domain data displayed in the second display area DA2 (step S106).

[0105] Figures 8A, 8B, and 8C illustrate an example in which the display range in the time axis direction of the first display area DA1 is scrolled in the direction of the left arrow while maintaining the FFT processing range specified by the cursor frame CF. The power spectrum in the first display area DA1 where the FFT processing range is maintained by the cursor frame CF is labeled "PS (default)".

[0106] When a swipe operation is performed in the first display area DA1 shown in Figure 8C, the control unit 3, as shown in Figure 8D, fixes one end of the cursor frame CF (the left end of the first display area DA1 in the example shown in Figure 8D) to the edge of the first display area DA1 (the left end of the first display area DA1 in the example shown in Figure 8D), scrolls the display range in the time axis direction in the first display area DA1, and in step S103 after returning to the process shown in Figure 3, updates the FFT processing range in accordance with the scrolling of the display range in the time axis direction in the first display area DA1, and in step S106, as shown in Figure 8D, displays the power spectrum PS(shift) of the frequency domain obtained by performing FFT processing on the time domain data of the updated FFT processing range in the second display area DA2.

[0107] The third example of the display control processing described above prevents the display range in the time axis direction of the first display area DA1 from ceasing to scroll when the swipe operation scrolls the display range in the time axis direction, even when one end of the cursor frame CF in the time axis direction is positioned at the other end of the first display area DA1 in the time axis direction.

[0108] Next, a method for expanding or contracting the display range in the time axis direction of the first display area DA1 while maintaining the FFT processing range specified by the cursor frame CF by pinch-in or pinch-out operations on the display 1 will be described with reference to Figures 10A, 10B, 10C, and 11.

[0109] In this disclosure, "pinch-in operation" refers to an operation that reduces the distance between two points that are touched simultaneously on display 1. In this disclosure, "pinch-out operation" refers to an operation that increases the distance between two points that are touched simultaneously on display 1.

[0110] Figure 10A is the first figure showing an example of zooming in / out of the display range using pinch-in / pinch-out operations within the cursor frame. Figure 10B is the second figure showing an example of zooming in / out of the display range using pinch-in / pinch-out operations within the cursor frame. Figure 10C is the third figure showing an example of zooming in / out of the display range using pinch-in / pinch-out operations within the cursor frame. Figure 11 is a subflowchart showing a fourth example of the display control process.

[0111] In the fourth example of the display control process shown in Figure 11, the control unit 3 determines whether or not a pinch-in operation has been performed on the first display area DA1 (step S231).

[0112] If a pinch-in operation has not been performed on the first display area DA1 (step S231; No), the control unit 3 then determines whether or not a pinch-out operation has been performed on the first display area DA1 (step S232).

[0113] If a pinch-out operation is not performed on the first display area DA1 (step S232; No), the process returns to the one shown in Figure 3, and the processes from step S102 onwards are repeatedly executed to update the time-domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0114] When a pinch-in operation is performed on the first display area DA1 (step S231; Yes), the control unit 3 expands the display range of the first display area DA1 in the time axis direction (step S233).

[0115] When a pinch-out operation is performed on the first display area DA1 (step S232; Yes), the control unit 3 reduces the display range of the first display area DA1 in the time axis direction (step S234).

[0116] Then, the control unit 3 expands or shrinks the display range of the first display area DA1 in the time axis direction by a pinch-in or pinch-out operation on the first display area DA1, and returns to the process shown in Figure 3, repeatedly executing the processes from step S102 onwards to update the time domain data displayed in the first display area DA1 (step S103), and further performs FFT processing on the time domain data within the FFT processing range acquired in step S104 (step S105) to update the frequency domain data displayed in the second display area DA2 (step S106).

[0117] Figures 10A, 10B, and 10C illustrate embodiments in which the display range in the time axis direction of the first display area DA1 is expanded or contracted while maintaining the FFT processing range specified by the cursor frame CF. The power spectrum in the first display area DA1 where the FFT processing range is maintained by the cursor frame CF is referred to as "PS (default)".

[0118] Specifically, when a pinch-out operation is performed in the direction indicated by the arrow in Figure 10A, the display range in the time axis direction of the first display area DA1, including the cursor frame CF, is reduced, as shown in Figure 10B.

[0119] Furthermore, when a pinch-in operation is performed in the direction indicated by the arrow in Figure 10B, the display range in the time axis direction of the first display area DA1, including the cursor frame CF, expands, as shown in Figure 10C.

[0120] The fourth example of the display control processing described above makes it possible to intuitively change the display range in the time axis direction of the first display area DA1.

[0121] Next, a method for reducing or expanding the FFT processing range specified by the cursor frame CF by pinching in or pinching out at the left and right ends in the time axis direction of the cursor frame CF will be explained with reference to Figures 12A, 12B, 12C, and 13.

[0122] Figure 12A is the first figure showing an example of expanding / reducing the FFT processing range by pinching in / pinch out at both ends of the cursor frame along the time axis. Figure 12B is the second figure showing an example of expanding / reducing the FFT processing range by pinching in / pinch out at both ends of the cursor frame along the time axis. Figure 12C is the third figure showing an example of expanding / reducing the FFT processing range by pinching in / pinch out at both ends of the cursor frame along the time axis. Figure 13 is a subflowchart showing the fifth example of display control processing.

[0123] In the fifth example of the display control process shown in Figure 13, the control unit 3 determines whether or not a pinch-in operation has been performed on the left and right ends of the cursor frame CF in the time axis direction (step S241).

[0124] If a pinch-in operation has not been performed on the left and right ends of the cursor frame CF in the time axis direction (step S241; No), the control unit 3 then determines whether or not a pinch-out operation has been performed on the left and right ends of the cursor frame CF in the time axis direction (step S242).

[0125] If a pinch-out operation is not performed on the left or right ends of the cursor frame CF in the time axis direction (step S242; No), the process returns to the one shown in Figure 3, and the processes from step S102 onwards are repeatedly executed to update the time domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time domain data within the FFT processing range acquired in step S104 (step S105), and the frequency domain data displayed in the second display area DA2 is updated (step S106).

[0126] When a pinch-in operation is performed on the left or right end of the cursor frame CF in the time axis direction (step S241; Yes), the control unit 3 reduces the FFT processing range specified by the cursor frame CF (step S243).

[0127] When a pinch-out operation is performed on the left and right ends of the cursor frame CF in the time axis direction (step S242; Yes), the control unit 3 expands the FFT processing range specified by the cursor frame CF (step S244).

[0128] Then, the control unit 3 reduces or expands the FFT processing range specified by the cursor frame CF by pinching in or pinching out on the left and right ends of the cursor frame CF in the time axis direction, and then returns to the process shown in Figure 3, repeatedly executing the processes from step S102 onwards to update the time domain data displayed in the first display area DA1 (step S103), and further performs FFT processing on the time domain data within the FFT processing range acquired in step S104 (step S105), and updates the frequency domain data displayed in the second display area DA2 (step S106).

[0129] In Figures 12A, 12B, and 12C, the power spectrum in the frequency domain obtained by performing FFT processing on the time domain data within the FFT processing range specified by the cursor frame CF in the first display area DA1 shown in Figure 12A is designated as "PS (default)".

[0130] When the left and right ends of the cursor frame CF shown in Figure 12A are pinched in to the positions shown in Figure 12B, the control unit 3, in step S103 after returning to the process shown in Figure 3, updates the FFT processing range in accordance with the pinch-in operation of the left and right ends of the cursor frame CF, and in step S106, as shown in Figure 12B, displays the frequency domain power spectrum PS(narrow) obtained by performing FFT processing on the time domain data of the updated FFT processing range in the second display area DA2.

[0131] Furthermore, when the left and right ends of the cursor frame CF shown in Figure 12B are pinched out to the positions shown in Figure 12C, the control unit 3, in step S103 after returning to the process shown in Figure 3, updates the FFT processing range in accordance with the pinch-out operation of the left and right ends of the cursor frame CF, and in step S106, as shown in Figure 12C, displays the power spectrum PS (wide) of the frequency domain obtained by performing FFT processing on the time domain data of the updated FFT processing range in the second display area DA2.

[0132] The fifth example of the display control processing described above makes it possible to intuitively change the FFT processing range.

[0133] Next, a method for moving the cursor frame CF by dragging the upper or lower end of the cursor frame CF will be explained with reference to Figures 14A, 14B, and 15.

[0134] Figure 14A is the first figure showing an example of moving the cursor frame by dragging the top and bottom edges of the cursor frame. Figure 14B is the second figure showing an example of moving the cursor frame by dragging the top and bottom edges of the cursor frame. Figure 15 is a subflowchart showing the sixth example of the display control process.

[0135] Figure 14A illustrates a configuration in which the cursor frame CF is displayed aligned to one end of the first display area DA1 in the time axis direction. In the sixth example of the display control process shown in Figure 15, the control unit 3 determines whether or not a drag operation has been performed on the upper or lower end of the cursor frame CF (step S251).

[0136] If no drag operation is performed on the upper or lower end of the cursor frame CF (step S251; No), the process returns to the one shown in Figure 3, and the processes from step S102 onwards are repeatedly executed to update the time-domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0137] If a drag operation is performed on the upper or lower end of the cursor frame CF (step S251; Yes), the control unit 3 determines whether the cursor frame CF is movable within the first display area DA1 (step S252). If the cursor frame CF is immovable (step S252; No), the process returns to the process shown in Figure 3, and the processes from step S102 onward are repeatedly executed to update the time-domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0138] In the sixth example of the display control process shown in Figure 15, the control unit 3 determines that the cursor frame CF is immobile if, for example, a drag operation is performed on the upper or lower edge of the cursor frame CF in the rightward direction beyond one end (right end) in the time axis direction of the first display area DA1. The control unit 3 also determines that the cursor frame CF is immobile if, for example, a drag operation is performed on the cursor frame CF in the leftward direction beyond the other end (left end) in the time axis direction of the first display area DA1.

[0139] If the cursor frame CF is movable (step S252; Yes), the display position of the cursor frame CF within the first display area DA1 is moved in response to the drag operation (step S253).

[0140] If the cursor frame CF cannot be moved (step S252; No), the control unit 3 reduces the FFT processing range specified by the cursor frame CF (step S254).

[0141] Then, the control unit 3 moves the cursor frame CF by dragging, or reduces the FFT processing range specified by the cursor frame CF, and returns to the process shown in Figure 3, repeatedly executing the processes from step S102 onwards to update the time-domain data displayed in the first display area DA1 (step S103), and further performs FFT processing on the time-domain data within the FFT processing range acquired in step S104 (step S105), and updates the frequency-domain data displayed in the second display area DA2 (step S106).

[0142] In Figures 14A and 14B, the power spectrum in the frequency domain obtained by performing FFT processing on the time domain data within the FFT processing range specified by the cursor frame CF in the first display area DA1 shown in Figure 14A is designated as "PS (default)".

[0143] When the cursor frame CF shown in Figure 14A is dragged to the position shown in Figure 14B, the control unit 3, in step S103 after returning to the process shown in Figure 3, updates the FFT processing range in accordance with the movement of the cursor frame CF, and in step S106, as shown in Figure 14B, displays the power spectrum PS(shift) of the frequency domain obtained by performing FFT processing on the time domain data of the updated FFT processing range in the second display area DA2.

[0144] When the time-axis end of the cursor frame CF coincides with the end of the first display area DA1, and a drag operation is performed on the upper or lower end of the cursor frame CF, the control unit 3 reduces the range of the cursor frame CF in the time axis direction while keeping the cursor frame CF fixed. Then, in step S103, after returning to the process shown in Figure 3, the FFT processing range is updated in accordance with the reduction of the cursor frame CF, and in step S106, similar to the first example of the display control process shown in Figure 5, the power spectrum PS (narrow) of the frequency domain obtained by performing FFT processing on the time domain data of the updated FFT processing range is displayed in the second display area DA2, and a caution display CD is displayed to indicate that the resolution has decreased due to the reduction of the FFT processing range (see Figure 4C). This makes it easier to understand that the resolution of the frequency domain data has decreased due to the reduction of the FFT processing range.

[0145] As demonstrated in the sixth example of the display control process described above, similar to the first example of the display control process, it is possible to set the display range and FFT processing range of the time-domain data displayed on display 1 with a minimal configuration and intuitive operation. This makes it easier to understand the condition of the bearing being evaluated, regardless of the skill level or experience of the field worker.

[0146] Furthermore, when one end of the cursor frame CF in the time axis direction is positioned at the other end of the first display area DA1 in the time axis direction, and a drag operation is performed on the upper or lower end of the cursor frame CF, the resulting feeling of the cursor frame CF not moving can be reduced.

[0147] Next, an embodiment of changing the FFT processing range by dragging the left and right ends of the cursor frame CF in the time axis direction will be described with reference to Figures 16A, 16B, 17A, 17B, and 18.

[0148] Figure 16A is the first figure showing an example of changing the FFT processing range by dragging the left edge of the cursor frame. Figure 16B is the second figure showing an example of changing the FFT processing range by dragging the left edge of the cursor frame. Figure 17A is the first figure showing an example of changing the FFT processing range by dragging the right edge of the cursor frame. Figure 17B is the second figure showing an example of changing the FFT processing range by dragging the right edge of the cursor frame. Figure 18 is a subflowchart showing the seventh example of display control processing.

[0149] In the seventh example of the display control process shown in Figure 18, the control unit 3 determines whether or not a drag operation has been performed on the left or right edge of the cursor frame CF (step S261).

[0150] If no drag operation is performed on the left or right edge of the cursor frame CF (step S261; No), the process returns to the one shown in Figure 3, and the processes from step S102 onwards are repeatedly executed to update the time-domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0151] When a drag operation is performed on the left edge of the cursor frame CF (step S261; Yes), the control unit 3 fixes the right edge of the cursor frame CF within the first display area DA1 and changes the FFT processing range (step S262).

[0152] When a drag operation is performed on the right edge of the cursor frame CF (step S261; Yes), the control unit 3 fixes the left edge of the cursor frame CF within the first display area DA1 and changes the FFT processing range (step S262).

[0153] In Figures 16A and 16B, the power spectrum in the frequency domain obtained by performing FFT processing on the time domain data within the FFT processing range specified by the cursor frame CF in the first display area DA1 shown in Figure 16A is designated as "PS (default)".

[0154] When the left end of the cursor frame CF shown in Figure 16A is dragged to the position shown in Figure 16B, the control unit 3, in step S103 after returning to the process shown in Figure 3, updates the FFT processing range in accordance with the movement of the left end of the cursor frame CF, and in step S106, as shown in Figure 16B, displays the power spectrum PS(narrow) obtained by performing FFT processing on the time domain data of the updated FFT processing range in the second display area DA2.

[0155] In Figures 17A and 17B, the power spectrum in the frequency domain obtained by performing FFT processing on the time domain data within the FFT processing range specified by the cursor frame CF in the first display area DA1 shown in Figure 17A is designated as "PS (default)".

[0156] When the right end of the cursor frame CF shown in Figure 17A is dragged to the position shown in Figure 17B, the control unit 3, in step S103 after returning to the process shown in Figure 3, updates the FFT processing range in accordance with the movement of the right end of the cursor frame CF, and in step S106, as shown in Figure 17B, displays the power spectrum PS (wide) of the frequency domain obtained by performing FFT processing on the time domain data of the updated FFT processing range in the second display area DA2.

[0157] The seventh example of the display control processing described above makes it possible to intuitively change the FFT processing range.

[0158] Next, a modified example of a method in which the display range in the time axis direction of the first display area DA1 is scrolled while maintaining the FFT processing range specified by the cursor frame CF by a swipe operation on the display 1 will be described with reference to Figures 19, 20, and 21.

[0159] Figure 19 shows an example of a pop-up screen. Figure 20 shows an example of a settings change screen. Figure 21 is a subflowchart showing the eighth example of the display control process. Figure 22 is a subflowchart showing an example of the settings change process. Here, we will explain in detail a process that differs from the third example of the display control process shown in Figure 9, and we may omit redundant explanations.

[0160] In the eighth example of the display control process shown in Figure 21, if the cursor frame CF is immobile (step S222; No), the control unit 3 executes a setting change process for the FFT processing range (step S300) and displays the pop-up screen PUS shown in Figure 19 on the display 1 (step S301).

[0161] Figure 19 illustrates an example in which the pop-up screen PUS is displayed superimposed on the first display area DA1. However, the system is not limited to this; the pop-up screen PUS may also be displayed superimposed on the second display area DA2, or in an area of ​​the display 1 that does not overlap with the first display area DA and the second display area DA2.

[0162] The control unit 3 determines whether or not to change the FFT processing range setting on the pop-up screen PUS (step S302). Specifically, for example, if the "YES" button is tapped on the pop-up screen PUS shown in Figure 19, the control unit 3 determines to change the FFT processing range setting. Also, for example, if the "NO" button is tapped on the pop-up screen PUS shown in Figure 19, the control unit 3 determines not to change the FFT processing range setting.

[0163] If the FFT processing range setting is not changed (Step S302; No), the process returns to the display control process shown in Figure 21.

[0164] When changing the setting of the FFT processing range (step S302; Yes), the control unit 3 displays the setting change screen SS shown in Figure 20 on the display 1 (step S303).

[0165] Figure 20 illustrates a configuration in which the settings change screen SS is displayed superimposed on the first display area DA1 and the second display area DA2. However, the system is not limited to this configuration, and the settings change screen SS may be displayed in an area on the display 1 that does not overlap with the first display area DA and the second display area DA2.

[0166] The control unit 3 determines whether or not the FFT processing range setting has been changed on the setting change screen SS (step S304). Specifically, for example, if at least one of the values ​​for “Analysis Range (frange)” and “FFT Size (N)” has been changed on the setting change screen SS shown in Figure 20, and the “Return” button is tapped, the control unit 3 determines that the “Time Window Length (T)” (FFT processing range) setting in the FFT processing has been changed. Also, for example, if neither the values ​​for “Analysis Range (frange)” nor “FFT Size (N)” have been changed on the setting change screen SS shown in Figure 20, and the “Return” button is tapped, the control unit 3 determines that the “Time Window Length (T)” (FFT processing range) setting in the FFT processing has not been changed.

[0167] If the FFT processing range setting has not been changed (step S304; No), the process returns to the display control process shown in Figure 21.

[0168] When the FFT processing range setting is changed (step S304; Yes), the control unit 3 changes the "time window length (T)" (FFT processing range) to the "analysis range (frange)" and "FFT size (N)" values ​​entered on the setting change screen SS (step S305).

[0169] Then, after the display control process shown in Figure 21, the process returns to the process shown in Figure 3, and the processes from step S102 onwards are repeatedly executed to update the time-domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0170] The setting change process in the eighth example of the display control process described above makes it possible to explicitly change the FFT processing range.

[0171] Figure 23 is a schematic diagram showing a specific example of a measuring device according to the first modified embodiment.

[0172] In the first modified example of the embodiment shown in Figure 23, the measuring device 100a displays a cursor bar CB for scrolling the display range in the time axis direction of the first display area DA1 while maintaining the FFT processing range specified by the cursor frame CF. In Figure 23, the power spectrum in the first display area DA1 where the FFT processing range is maintained by the cursor frame CF is shown as "PS (default)".

[0173] Figure 24A is the first figure showing an example of scrolling operation by dragging the cursor bar. Figure 24B is the second figure showing an example of scrolling operation by dragging the cursor bar. Figure 25 is a subflowchart showing the ninth example of display control processing.

[0174] In the ninth example of the display control process shown in Figure 25, the control unit 3 determines whether or not a drag operation has been performed on the cursor bar CB (step S271).

[0175] If no drag operation is performed on the cursor bar CB (step S271; No), the process returns to the one shown in Figure 3, and the processes from step S102 onwards are repeatedly executed to update the time-domain data displayed in the first display area DA1 (step S103). Furthermore, an FFT process is performed on the time-domain data within the FFT processing range acquired in step S104 (step S105), and the frequency-domain data displayed in the second display area DA2 is updated (step S106).

[0176] When the cursor bar CB is dragged (step S271; Yes), the control unit 3 scrolls the display range in the time axis direction of the first display area DA1 while maintaining the FFT processing range specified by the cursor frame CF (step S272).

[0177] Figure 24A illustrates a configuration in which the display range in the time axis direction of the first display area DA1, as shown in Figure 23, is scrolled by dragging the cursor bar CB until one end of the cursor frame CF (the left end of the first display area DA1 in the example shown in Figure 24A) coincides with the end of the first display area DA1 (the left end of the first display area DA1 in the example shown in Figure 24A), while maintaining the FFT processing range specified by the cursor frame CF.

[0178] Figure 24B illustrates a configuration in which the display range in the time axis direction of the first display area DA1, as shown in Figure 23, is scrolled by dragging the cursor bar CB until the other end of the cursor frame CF (the right end of the first display area DA1 in the example shown in Figure 24B) coincides with the edge of the first display area DA1 (the right end of the first display area DA1 in the example shown in Figure 24B), while maintaining the FFT processing range specified by the cursor frame CF.

[0179] Furthermore, it is desirable to highlight the cursor frame CF as it moves to specify the FFT processing range. Examples of methods for highlighting the cursor frame CF include displaying it with a thicker dashed line than usual, or displaying the cursor frame CF as blinking. This makes it easier for on-site workers to recognize changes in the FFT processing range that occur when the cursor frame CF moves.

[0180] Furthermore, in the measuring device 100 according to the embodiment shown in Figure 2 and the measuring device 100a according to the first modified embodiment shown in Figure 23, the cursor frame CF for specifying the FFT processing range is shown with a dashed line as an example, but the display manner of the cursor frame CF for specifying the FFT processing range is not limited to this.

[0181] Figure 26 is a schematic diagram showing a specific example of a measuring device according to a second modified embodiment. In the measuring device 100b according to the second modified embodiment shown in Figure 26, an example is shown in which the left and right ends in the time axis direction of the region CF for specifying the FFT processing range are displayed with cursors.

[0182] In the measuring device 100b according to a second modified example of the embodiment shown in Figure 26, for example, the cursors at the left and right ends of the moving region CF are shown with thicker dashed lines than in normal display, or they are shown blinking.

[0183] Figure 27 is a schematic diagram showing a specific example of a measuring device according to a third modified embodiment. In the measuring device 100c according to the third modified embodiment shown in Figure 27, an example is shown in which the region CF for specifying the FFT processing range is displayed by hatching.

[0184] In the measuring device 100c according to the third modified embodiment shown in Figure 27, for example, the region CF during movement is shown with hatching that is darker (or brighter) than the normal display, or it is shown with flashing.

[0185] The measuring devices 100, 100a, 100b, and 100c according to the above-described embodiment, and the operation methods and programs of the applications running on these measuring devices 100, 100a, 100b, and 100c, enable intuitive operation to set the display range of time-domain data and the FFT processing range. This makes it easier to understand the condition of the bearing under evaluation, regardless of the skill level or experience of the field worker.

[0186] Furthermore, within the scope of the present invention, it is possible to freely combine each embodiment, modify any component of each embodiment, or omit any component in each embodiment. [Explanation of Symbols]

[0187] 1. Display (UI (User Interface) section) 2. Data Acquisition Unit 3. Control Unit 4 Storage section 11 Display Unit (Display Panel) 12. Control panel (touch panel) 100 Measuring devices CB Cursor Bar CD Caution Statement CF cursor frame (area) DA1 1st display area DA2 2nd display area PS Power Spectrum PUS Pop-up Screen SS Settings Change Screen

Claims

1. A touch-enabled display, A data acquisition unit that acquires the time-series change in the amplitude of sound waves emitted by the vibration of the bearing under evaluation as time-domain data, A control unit that displays acquired time-domain data in a first display area on the display, performs FFT processing on the time-domain data within a specified FFT processing range in the first display area to generate frequency-domain data, and displays the frequency-domain data in a second display area different from the first display area on the display, Equipped with, The control unit, In the first display area, the cursor frame for setting the FFT processing range is moved by dragging, Within the area of ​​the cursor frame, the display range in the time axis direction of the first display area is scrolled by a swipe operation. When the display range in the time axis direction of the first display area is scrolled by a swipe operation, the cursor frame is moved within the first display area while maintaining the FFT processing range defined by the cursor frame. When one end of the cursor frame in the time axis direction is positioned at the one end of the first display area in the time axis direction, and the display range in the time axis direction of the first display area is scrolled by a swipe operation, the position of the cursor frame in the time axis direction is fixed at one end of the first display area while the display range in the time axis direction of the first display area is scrolled. Measuring device.

2. The control unit, When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the position of one end of the first display area in the time axis direction, the FFT processing range is reduced while fixing the one end of the cursor frame in the time axis direction. The measuring device according to claim 1.

3. The control unit, The display range in the time axis direction of the first display area is expanded by a pinch-in operation within the area of ​​the cursor frame, and the display range in the time axis direction of the first display area is reduced by a pinch-out operation within the area of ​​the cursor frame. The measuring device according to claim 1.

4. The control unit, The FFT processing range is reduced by pinching in at both ends of the cursor frame along the time axis, and the FFT processing range is expanded by pinching out at both ends of the cursor frame along the time axis. The measuring device according to claim 1.

5. The control unit, When the upper or lower end of the cursor frame is dragged, the cursor frame is moved. When one end of the cursor frame in the time axis direction is dragged, the FFT processing range is changed while fixing the other end of the cursor frame in the time axis direction. The measuring device according to claim 1.

6. A touch-enabled display, A data acquisition unit that acquires the time-series change in the amplitude of sound waves emitted by the vibration of the bearing under evaluation as time-domain data, A control unit that displays acquired time-domain data in a first display area on the display, performs FFT processing on the time-domain data within a specified FFT processing range in the first display area to generate frequency-domain data, and displays the frequency-domain data in a second display area different from the first display area on the display, Equipped with, The control unit, In the first display area, the cursor frame for setting the FFT processing range is moved by dragging, Within the area of ​​the cursor frame, the display range in the time axis direction of the first display area is scrolled by a swipe operation. When the upper or lower end of the cursor frame is dragged, the display position of the cursor frame within the first display area is moved in the time axis direction while maintaining the width of the FFT processing range by the cursor frame in the time axis direction. When one end of the cursor frame in the time axis direction is dragged, the width of the FFT processing range by the cursor frame in the time axis direction is changed while fixing the other end of the cursor frame in the time axis direction. Measuring device.

7. The control unit, When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the position of one end of the first display area in the time axis direction, the FFT processing range is reduced while fixing the one end of the cursor frame in the time axis direction. The measuring device according to claim 6.

8. The control unit, The display range in the time axis direction of the first display area is expanded by a pinch-in operation within the area of ​​the cursor frame, and the display range in the time axis direction of the first display area is reduced by a pinch-out operation within the area of ​​the cursor frame. The measuring device according to claim 6.

9. The control unit, The FFT processing range is reduced by pinching in at both ends of the cursor frame along the time axis, and the FFT processing range is expanded by pinching out at both ends of the cursor frame along the time axis. The measuring device according to claim 6.

10. The control unit highlights the cursor frame while it is moving. A measuring device according to any one of claims 1 to 9.

11. The control unit, At least a settings change screen for changing the FFT processing range is displayed on the display. A measuring device according to any one of claims 1 to 9.

12. The control unit, When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction, a pop-up screen is displayed on the display for selecting whether or not to display the settings change screen. The measuring device according to claim 11.

13. A touch-enabled display, A data acquisition unit that acquires the time-series change in the amplitude of sound waves emitted by the vibration of the bearing under evaluation as time-domain data, A control unit that displays acquired time-domain data in a first display area on the display, performs FFT processing on the time-domain data within a specified FFT processing range in the first display area to generate frequency-domain data, and displays the frequency-domain data in a second display area different from the first display area on the display, Equipped with, The control unit, In the first display area, the cursor frame for setting the FFT processing range is moved by dragging, Within the area of ​​the cursor frame, the display range in the time axis direction of the first display area is scrolled by a swipe operation. At least a settings change screen for changing the FFT processing range is displayed on the display, When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction, a pop-up screen is displayed on the display for selecting whether or not to display the settings change screen. Measuring device.

14. The control unit, When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the position of one end of the first display area in the time axis direction, the FFT processing range is reduced while fixing the one end of the cursor frame in the time axis direction. The measuring device according to claim 13.

15. The control unit, The display range in the time axis direction of the first display area is expanded by a pinch-in operation within the area of ​​the cursor frame, and the display range in the time axis direction of the first display area is reduced by a pinch-out operation within the area of ​​the cursor frame. The measuring device according to claim 13.

16. The control unit, The FFT processing range is reduced by pinching in at both ends of the cursor frame along the time axis, and the FFT processing range is expanded by pinching out at both ends of the cursor frame along the time axis. The measuring device according to claim 13.

17. The control unit, When the upper or lower end of the cursor frame is dragged, the cursor frame is moved. When one end of the cursor frame in the time axis direction is dragged, the FFT processing range is changed while fixing the other end of the cursor frame in the time axis direction. The measuring device according to claim 13.

18. The control unit highlights the cursor frame while it is moving. A measuring device according to any one of claims 13 to 17.

19. A method for operating an application that runs on a touch-enabled display, The process involves acquiring time-domain data of the time-series change in the amplitude of sound waves emitted by the vibration of the bearing under evaluation, and The steps include: displaying the acquired time-domain data in a first display area on the display; The steps include: performing an FFT on time-domain data within a specified FFT processing range in the first display area to generate frequency-domain data, and displaying the frequency-domain data in a second display area different from the first display area on the display; It has, In the first display area, the cursor frame for setting the FFT processing range is moved by dragging, Within the area of ​​the cursor frame, the display range in the time axis direction of the first display area is scrolled by a swipe operation. When the display range in the time axis direction of the first display area is scrolled by a swipe operation, the cursor frame is moved within the first display area while maintaining the FFT processing range defined by the cursor frame. When one end of the cursor frame in the time axis direction is positioned at the one end of the first display area in the time axis direction, and the display range in the time axis direction of the first display area is scrolled by a swipe operation, the position of the cursor frame in the time axis direction is fixed at one end of the first display area while the display range in the time axis direction of the first display area is scrolled. How to use the application.

20. When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the position of one end of the first display area in the time axis direction, the FFT processing range is reduced while fixing the one end of the cursor frame in the time axis direction. A method for operating the application described in claim 19.

21. The display range in the time axis direction of the first display area is expanded by a pinch-in operation within the area of ​​the cursor frame, and the display range in the time axis direction of the first display area is reduced by a pinch-out operation within the area of ​​the cursor frame. A method for operating the application described in claim 19.

22. The FFT processing range is reduced by pinching in at both ends of the cursor frame along the time axis, and the FFT processing range is expanded by pinching out at both ends of the cursor frame along the time axis. A method for operating the application described in claim 19.

23. When the upper or lower end of the cursor frame is dragged, the cursor frame is moved. When one end of the cursor frame in the time axis direction is dragged, the FFT processing range is changed while fixing the other end of the cursor frame in the time axis direction. A method for operating the application described in claim 19.

24. A method for operating an application that runs on a touch-enabled display, The process involves acquiring time-domain data of the time-series change in the amplitude of sound waves emitted by the vibration of the bearing under evaluation, and The steps include: displaying the acquired time-domain data in a first display area on the display; The steps include: performing an FFT on time-domain data within a specified FFT processing range in the first display area to generate frequency-domain data, and displaying the frequency-domain data in a second display area different from the first display area on the display; It has, In the first display area, the cursor frame for setting the FFT processing range is moved by dragging, Within the area of ​​the cursor frame, the display range in the time axis direction of the first display area is scrolled by a swipe operation. When the upper or lower end of the cursor frame is dragged, the display position of the cursor frame within the first display area is moved in the time axis direction while maintaining the width of the FFT processing range by the cursor frame in the time axis direction. When one end of the cursor frame in the time axis direction is dragged, the width of the FFT processing range by the cursor frame in the time axis direction is changed while fixing the other end of the cursor frame in the time axis direction. How to use the application.

25. When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the position of one end of the first display area in the time axis direction, the FFT processing range is reduced while fixing the one end of the cursor frame in the time axis direction. A method for operating the application described in claim 24.

26. The display range in the time axis direction of the first display area is expanded by a pinch-in operation within the area of ​​the cursor frame, and the display range in the time axis direction of the first display area is reduced by a pinch-out operation within the area of ​​the cursor frame. A method for operating the application described in claim 24.

27. The FFT processing range is reduced by pinching in at both ends of the cursor frame along the time axis, and the FFT processing range is expanded by pinching out at both ends of the cursor frame along the time axis. A method for operating the application described in claim 24.

28. The cursor frame is highlighted while it is moving. A method for operating the application according to any one of claims 19 to 27.

29. At least a settings change screen for changing the FFT processing range is displayed on the display. A method for operating the application according to any one of claims 19 to 27.

30. When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction, a pop-up screen is displayed on the display for selecting whether or not to display the settings change screen. A method for operating the application described in claim 29.

31. A method for operating an application that runs on a touch-enabled display, The process involves acquiring time-domain data of the time-series change in the amplitude of sound waves emitted by the vibration of the bearing under evaluation, and The steps include: displaying the acquired time-domain data in a first display area on the display; The steps include: performing an FFT on time-domain data within a specified FFT processing range in the first display area to generate frequency-domain data, and displaying the frequency-domain data in a second display area different from the first display area on the display; It has, In the first display area, the cursor frame for setting the FFT processing range is moved by dragging, Within the area of ​​the cursor frame, the display range in the time axis direction of the first display area is scrolled by a swipe operation. At least a settings change screen for changing the FFT processing range is displayed on the display, When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction, a pop-up screen is displayed on the display for selecting whether or not to display the settings change screen. How to use the application.

32. When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the position of one end of the first display area in the time axis direction, the FFT processing range is reduced while fixing the one end of the cursor frame in the time axis direction. A method for operating the application described in claim 31.

33. The display range in the time axis direction of the first display area is expanded by a pinch-in operation within the area of ​​the cursor frame, and the display range in the time axis direction of the first display area is reduced by a pinch-out operation within the area of ​​the cursor frame. A method for operating the application described in claim 31.

34. The FFT processing range is reduced by pinching in at both ends of the cursor frame along the time axis, and the FFT processing range is expanded by pinching out at both ends of the cursor frame along the time axis. A method for operating the application described in claim 31.

35. When the upper or lower end of the cursor frame is dragged, the cursor frame is moved. When one end of the cursor frame in the time axis direction is dragged, the FFT processing range is changed while fixing the other end of the cursor frame in the time axis direction. A method for operating the application described in claim 31.

36. The cursor frame is highlighted while it is moving. A method for operating the application according to any one of claims 31 to 35.

37. The method for operating the application described in any one of claims 19 to 27 and 31 to 35 is performed. program.

38. The cursor frame is highlighted while it is moving. The program according to claim 37.

39. At least a settings change screen for changing the FFT processing range is displayed on the display. The program according to claim 37.

40. When the cursor frame is dragged while one end of the cursor frame in the time axis direction is positioned at the other end of the first display area in the time axis direction, a pop-up screen is displayed on the display for selecting whether or not to display the settings change screen. The program described in claim 39.

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