Maintenance management method, management device, and display method

Abstract

To facilitate adjustment of the maintenance timing of an X-ray inspection device.SOLUTION: A maintenance management method for an X-ray inspection device includes: an acquisition step of acquiring information on the usage history the X-ray inspection device (step S1); a determination step of determining the risk of failure on the basis of the usage history information (step S2); a calculation step of calculating a plurality of maintenance timings on the basis of the usage history information (step S3); and a presentation step of presenting the plurality of maintenance timings to a user (step S4). In the calculation step, the plurality of maintenance timings include a first maintenance timing calculated on the basis of a usage condition in the usage history information in a predetermined period, and a second maintenance timing calculated on the basis of a usage condition different from the usage history information. In the presentation step, a method for the presentation is made different according to the risk of failure.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a maintenance management method, a management device, and a display method. [Background technology]

[0002] Traditionally, X-ray inspection equipment requires regular maintenance. For example, regular maintenance is required to keep the X-ray output of an X-ray tube normal. As the time of use of an X-ray tube increases, the filament deteriorates. When the filament deteriorates, the electron emission weakens and the X-ray output of the X-ray tube decreases. In particular, when an X-ray tube is used at high voltage and high current, it is more likely to deteriorate. This shortens the lifespan of the X-ray tube. And when the lifespan of the X-ray tube is reached, it must be replaced.

[0003] Patent Document 1 discloses a technique for indicating the timing for replacing an X-ray tube. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-190581 A Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, the timing of X-ray tube replacement is presented pinpoint. In addition, the presentation of the timing of X-ray tube replacement is not linked to the imaging conditions of the X-ray inspection device. Therefore, it is unclear to what extent the user can advance or delay the maintenance timing from the presented timing.

[0006] Therefore, an object of the present invention is to make it easier for a user to adjust the maintenance schedule for an X-ray inspection apparatus. [Means for solving the problem]

[0007] In order to solve the above problems, the maintenance management method according to the present invention comprises the steps of: A maintenance management method using a management device that manages the maintenance timing of an X-ray inspection device, an acquisition step of acquiring usage history information of the X-ray inspection apparatus; a determination step of determining a risk of failure based on the usage history information; A calculation step of calculating a plurality of maintenance timings based on the usage history information; A presentation step of presenting the plurality of maintenance timings to a user, In the calculation step, the plurality of maintenance times include a first maintenance time calculated based on a usage condition in the usage history information during a predetermined period, and a second maintenance time calculated based on a usage condition different from the usage history information; In the presenting step, The method of presentation is varied depending on the risk of failure.

[0008] In addition, the management device according to the present invention comprises: A management device for managing the maintenance timing of an X-ray inspection device, an acquisition unit that acquires usage history information of the X-ray inspection apparatus; A determination unit that determines a risk of failure based on the usage history information; A calculation unit that calculates a plurality of maintenance timings based on the usage history information; A presentation unit that presents the plurality of maintenance timings to a user, In the calculation unit, the plurality of maintenance times include a first maintenance time calculated based on a usage condition in the usage history information during a predetermined period, and a second maintenance time calculated based on a usage condition different from the usage history information; In the presentation unit, Depending on the risk of failure, different presentation methods are used to present the risk on the display unit.

[0009] Further, the display method according to the present invention comprises: A display method for displaying a screen for maintenance management by the management device, comprising: The plurality of maintenance timings and the conditions that are the premise for calculating the plurality of maintenance timings are displayed on the screen. Effect of the Invention

[0010] According to the present invention, it becomes easier for the user to adjust the maintenance schedule for the X-ray inspection apparatus. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a block diagram showing a configuration of a maintenance schedule management system. [Diagram 2] FIG. 2 is a block diagram showing the configuration of a maintenance schedule management server. [Diagram 3] FIG. 1 is a block diagram showing a configuration of an X-ray inspection apparatus. [Figure 4] FIG. 2 is a block diagram showing a configuration of a terminal device. [Diagram 5] FIG. 13 is a flow diagram of a maintenance schedule presentation process. [Figure 6] 1 is a table showing filament current. [Figure 7] 1 is a table showing a filament breakage life. [Figure 8] 13 is a table showing the total number of times that the device can be used. [Figure 9] FIG. 13 is an image diagram of a maintenance timing display screen. [Figure 10] FIG. 13 is an image diagram of a maintenance timing display screen. [Figure 11] FIG. 13 is an image diagram of a maintenance timing display screen. [Figure 12] FIG. 13 is an image diagram of a maintenance schedule presentation screen. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to the following embodiments and drawings.

[0013] <Maintenance schedule management system> First, the configuration of the maintenance schedule management system 100 will be described with reference to Fig. 1. As shown in Fig. 1, the maintenance schedule management system 100 includes a maintenance schedule management server 1 as a management device, an X-ray inspection device 2, and a terminal device 3. The maintenance schedule management server 1, the X-ray inspection device 2, and the terminal device 3 transmit and receive information via a communication network N. The various types of information will be described later.

[0014] The maintenance schedule management server 1 is a device that manages the maintenance schedule of the X-ray inspection apparatus 2. The maintenance schedule management server 1 is configured as an on-premise or cloud device. The X-ray inspection device 2 is a device that obtains internal information of a test object. For example, the X-ray inspection device 2 is an X-ray Talbot imaging inspection device, a radiographic inspection device, an ultrasonic imaging inspection device, a magnetic inspection device, or the like. The terminal device 3 is a device that presents a maintenance time or a maintenance schedule. For example, the terminal device 3 is a terminal of a user of the X-ray inspection apparatus 2 or a terminal of a service technician. The communication network N is a LAN (Local Area Network), a WAN (Wide Area Network), the Internet, or the like.

[0015] It is desirable that the X-ray inspection device 2 to be maintained is an X-ray Talbot photography inspection device, because, for example, in an X-ray Talbot photography inspection device, the X-ray tube and the grid, which will be described later, need to be precisely positioned, and the device downtime for maintenance is longer than that of a normal X-ray transmission device.

[0016] <Test subject> Although the test object in this embodiment is not particularly limited, an example is a composite material (also called a composite material). Composite materials are used as components of various products, such as space and aircraft-related products, automobiles, ships, fishing rods, as well as electric, electronic, and home appliance parts, parabolic antennas, bathtubs, flooring materials, roofing materials, and the like.

[0017] <Maintenance schedule management server> Next, the configuration of the maintenance schedule management server 1 will be described with reference to Fig. 2. As shown in Fig. 2, the maintenance schedule management server 1 includes a control unit 11, a display unit 12, an operation unit 13, a communication unit 14, and a storage unit 15. The maintenance schedule management server 1 is a management device that manages the maintenance timing of the X-ray inspection device 2, which will be described later.

[0018] The control unit 11 is composed of a CPU (Central Processing Unit), a RAM (Random Access Memory), etc. The CPU of the control unit 11 reads out various programs stored in the storage unit 15, expands them in the RAM, executes various processes (such as a maintenance schedule presentation process described later) in accordance with the expanded programs, and controls the operation of each part of the maintenance schedule management server 1. The control unit 11 functions as an acquisition unit that acquires the usage history information of the X-ray inspection apparatus 2. The control unit 11 functions as a determination unit that determines the risk of failure based on the usage history information. The control unit 11 functions as a calculation unit that calculates a plurality of maintenance timings based on the usage history information. The control unit 11 functions as a presentation unit that presents the plurality of maintenance timings to the user. The control unit 11 causes the display units 12, 22, and 32, which will be described later, to present the timings using different presentation methods according to the risk of failure. The control unit 11 functions as a coordinating unit that adjusts the maintenance schedule based on the user's selection of the maintenance time.

[0019] The display unit 12 is composed of a monitor such as an LCD (Liquid Crystal Display), and is configured to display various screens (maintenance time presentation screen D1, maintenance schedule presentation screen D2, etc.) in accordance with the instructions of the display signal input from the control unit 11.

[0020] The operation unit 13 includes a keyboard having cursor keys, numeric input keys, various function keys, etc., a pointing device such as a mouse, a touch panel laminated on the surface of the display unit 12, etc. The operation unit 13 is configured to be operable by an operator. Further, the operation unit 13 outputs various signals based on operations performed by the operator to the control unit 11.

[0021] The communication unit 14 can transmit and receive various signals and various data to and from other devices connected via the communication network N.

[0022] The storage unit 15 is composed of a non-volatile semiconductor memory, a hard disk, etc., and stores various programs executed by the control unit 11 and parameters necessary for the execution of the programs. The storage unit 15 also stores usage history information acquired by the control unit 11.

[0023] <X-ray inspection apparatus> Next, the configuration of the X-ray inspection apparatus 2 will be described with reference to FIG. 3. As shown in FIG. 3, the X-ray inspection apparatus 2 includes a control unit 21, a display unit 22, an operation unit 23, a communication unit 24, a storage unit 25, and an imaging unit 26. Hereinafter, the X-ray inspection apparatus 2 will be described as an X-ray tomosynthesis inspection apparatus.

[0024] The control unit 21 is composed of a CPU, a RAM, etc. The CPU of the control unit 21 reads out various programs stored in the storage unit 25, expands them in the RAM, executes various processes according to the expanded programs, and controls the operations of each part of the X-ray inspection apparatus 2. The control unit 21 can obtain various tomosynthesis images such as a reconstructed image and an orientation analysis image by processing a moire fringe image described later, and further obtain various internal information from the various tomosynthesis images.

[0025] The display unit 22 is composed of a monitor such as an LCD, and is configured to display various screens (maintenance period prompt screen D1, maintenance schedule prompt screen D2, etc.) according to an instruction of a display signal input from the control unit 21.

[0026] The operation unit 23 is a keyboard equipped with cursor keys, numeric input keys, various function keys, etc., a pointing device such as a mouse, a touch panel laminated on the surface of the display unit 22, etc. The operation unit 23 is configured to be operable by an operator. In addition, the operation unit 23 outputs various signals to the control unit 21 based on operations performed by the operator.

[0027] The communication unit 24 is capable of transmitting and receiving various signals and various data to and from other devices connected via the communication network N.

[0028] The storage unit 25 is configured with a non-volatile semiconductor memory, a hard disk, or the like, and stores various programs executed by the control unit 11, parameters required for executing the programs, and the like.

[0029] The imaging unit 26 is composed of a radiation source (bulb), a subject table, a first grating, a second grating, a radiation detector, etc. The radiation source, the subject table, the first grating, the second grating, and the radiation detector are arranged in order in the radiation irradiation axis direction. A grating may also be provided between the radiation source and the subject table.

[0030] The radiation source includes an X-ray tube that generates X-rays and irradiates the X-rays in the z direction (gravity direction). For example, a Coolidge X-ray tube or a rotating anode X-ray tube can be used as the X-ray tube. X-rays are generated by colliding electrons emitted from a filament (cathode) with a metal (anode) such as tungsten or molybdenum. The filament current is determined by the tube current and tube voltage of the X-ray tube. The filament current is related to the life of the X-ray tube. This will be explained in the explanation of the maintenance schedule presentation process. In this embodiment, an example will be described in which imaging is performed using X-rays, but other types of radiation, such as neutron rays and gamma rays, may also be used. In addition, in the above description, an example of a vertical X-ray Talbot photography inspection device that irradiates X-rays in the direction of gravity from an X-ray tube has been described, but the present invention is not limited to this. For example, a horizontal X-ray Talbot photography inspection device that irradiates X-rays in a direction perpendicular to the direction of gravity from an X-ray tube may be used.

[0031] The principle of the Talbot interferometer used in X-ray Talbot photography inspection equipment is explained below. When X-rays emitted from a radiation source pass through a first grating, the transmitted X-rays form images at regular intervals in the radiation irradiation axis direction. These images are called self-images, and the phenomenon of forming self-images is called the Talbot effect. A second grating is placed roughly parallel to the self-image at the position where the self-image is formed, and a moiré fringe image is obtained by X-rays that pass through the second grating. That is, the first grating forms a periodic pattern, and the second grating converts the periodic pattern into moiré fringes. If a test object is present between the radiation source and the first grating, the phase of the X-rays is shifted by the test object, so that the moiré fringes on the moiré fringe image are disturbed at the edge of the test object. This disturbance of the moiré fringes can be detected by processing the moiré fringe image, and the test object image can be imaged. This is the principle of the Talbot interferometer. The radiation source generates radiation under the control of the control unit 21. The radiation detector detects the radiation under the control of the control unit 21 and obtains the moiré fringe image.

[0032] <Terminal device> Next, the configuration of the terminal device 3 will be described with reference to Fig. 4. As shown in Fig. 4, the terminal device 3 includes a control unit 31, a display unit 32, an operation unit 33, a communication unit , and a storage unit .

[0033] The control unit 31 is composed of a CPU, a RAM, etc. The CPU of the control unit 31 reads out various programs stored in the storage unit 35, loads them in the RAM, executes various processes according to the loaded programs, and controls the operations of each unit of the terminal device 3.

[0034] The display unit 32 is configured with a monitor such as an LCD, and is configured to display various screens (maintenance timing display screen D1, maintenance schedule display screen D2) and the like according to instructions of a display signal input from the control unit 31.

[0035] The operation unit 33 is a keyboard equipped with cursor keys, numeric input keys, various function keys, etc., a pointing device such as a mouse, a touch panel laminated on the surface of the display unit 32, etc. The operation unit 33 is configured to be operable by an operator. In addition, the operation unit 33 outputs various signals to the control unit 31 based on operations performed by the operator.

[0036] The communication unit 34 is capable of transmitting and receiving various signals and various data to and from other devices connected via the communication network N.

[0037] The storage unit 35 is configured with a non-volatile semiconductor memory, a hard disk, or the like, and stores various programs executed by the control unit 31, parameters required for executing the programs, and the like.

[0038] <Maintenance schedule suggestion process> Next, the maintenance schedule presentation process will be described with reference to Fig. 5. The maintenance schedule presentation process is a process for presenting a maintenance schedule for X-ray inspection apparatus 2. In the following, a process for presenting a maintenance schedule for a radiation source (bulb) will be exemplified, but the present invention is not limited to this.

[0039] First, the control unit 11 acquires the usage history information from the X-ray inspection apparatus 2 via the communication network N (step S1; acquiring step). At this time, the control unit 11 functions as an acquiring unit. The usage history information is information that indicates the usage history of the X-ray inspection device 2. For example, the usage history information includes the shooting conditions (usage conditions), the number of uses and operating time for each shooting condition, the image quality under the shooting conditions, and the device status of the X-ray inspection device 2. The device status of the X-ray inspection device 2 includes the temperature when the X-ray inspection device 2 is in use, the vibration when the X-ray inspection device 2 is in use, and the visibility of the X-ray inspection device 2. The visibility is a measure that indicates the clarity of the self-image and the degree of interference, and the higher the visibility, the better. In the case of a process for presenting a maintenance schedule for a radiation source (tube), usage history information such as the usage conditions of the tube (tube current, tube voltage, irradiation time, number of times) is acquired.

[0040] Next, the control unit 11 judges whether there is a risk of failure (step S2; judging step). At this time, the control unit 11 functions as a judging unit. The risk of failure means that a predetermined judgment condition is satisfied based on the usage history information of the X-ray inspection apparatus 2. The risk of failure may be judged for each of various configurations of the X-ray inspection apparatus 2. The risk of failure may be judged for each X-ray inspection apparatus 2.

[0041] If the control unit 11 determines that there is a risk of failure (step S2; YES), the maintenance schedule presentation process proceeds to step S3. If the control unit 11 determines that there is no risk of failure (step S2; NO), the maintenance schedule presentation process ends. Note that the control unit 11 may present the next maintenance schedule before ending the maintenance schedule presentation process. That is, a presentation step, which will be described later, is performed when the state of X-ray inspection apparatus 2 satisfies a predetermined determination condition. From the viewpoint of presentation, the predetermined determination condition can also be said to be a predetermined presentation condition.

[0042] Here, a method for determining the risk of failure will be specifically described. For example, the risk of failure is determined based on the shooting conditions (usage conditions) and the operating period. Specifically, the control unit 11 determines that there is a risk of failure when the number of times measured with a tube current equal to or more than half the maximum tube current of the tube exceeds 50% of the total number of times it can be used (determination condition). Specifically, the control unit 11 determines that there is a risk of failure when the number of times measured at a tube voltage equal to or greater than half the maximum tube voltage exceeds 50% of the total number of times that the device can be used (determination condition). Specifically, control unit 11 determines that there is a risk of failure when the remaining period until the bulb replacement time, calculated from the remaining bulb life, is less than four months (determination condition).

[0043] Also, for example, the risk of failure is determined based on visibility. Specifically, the control unit 11 determines that there is a risk of failure when the current visibility state is lower than the initial state or the state at the most recent maintenance inspection or the time of the previous part replacement by a predetermined degree (determination condition).

[0044] In the above example, the control unit 11 determines that there is a risk of failure. The control unit 11 may determine that there is a failure risk, and may also determine the risk in stages, such as high, medium, or low. For example, when determining in stages, the control unit 11 may combine the above-mentioned determination methods and determine the failure risk in stages based on the number of determination methods that have determined that there is a failure risk. For example, when determining in stages, the control unit 11 may determine the failure risk in stages based on the degree of deviation from the determination conditions. In other words, the determination of the risk of failure includes a determination of the presence or absence of a risk of failure and a gradual determination of the risk of failure (for example, high, medium, low).

[0045] Next, the control unit 11 calculates a plurality of maintenance timings (step S3; calculation step). At this time, the control unit 11 functions as a calculation unit. Here, a method for calculating a number of maintenance timings will be described with reference to Figs. 6 to 8. Fig. 6 is a table for calculating the filament current from the tube current and the tube voltage. Fig. 7 is a table showing the filament breakage life (filament life time) for each filament current. Fig. 8 is a table showing the remaining number of times (total number of times usable) for each filament when the filament current is divided for the irradiation time. First, the control unit 11 calculates the filament current for each use condition from the use conditions (tube current, tube voltage) in the use history information acquired in step S1, using FIG. Next, the control unit 11 integrates the irradiation time (total irradiation time) for each filament current using the use conditions (irradiation time, number of times) from the use history information acquired in step S1. Next, the control unit 11 calculates the remaining life by subtracting the integrated value (total irradiation time) from the filament life time using FIG. Next, the control unit 11 uses Fig. 8 to calculate the remaining number of uses for each usage condition (filament current and irradiation time) based on the usage history information. Fig. 8 is a diagram showing the maximum number of images taken (total number of usable times) for each shooting condition (irradiation time, filament current) when the filament life time is 100%. The control unit 11 multiplies the maximum number of images taken by the ratio of the remaining life to calculate the remaining number of measurements for each condition. The control unit 11 calculates the maintenance time (first maintenance time) by dividing the remaining number of uses by the number of measurements in a predetermined period based on the usage history information. Specifically, the control unit 11 calculates the maintenance timing based on the imaging conditions of the performance range of the X-ray inspection device 2. The performance range of the X-ray inspection device 2 is the period during which the X-ray inspection device 2 has been used, and examples of the calculation period include one month, three months, six months, one year, and the entire period from the start date of use. Furthermore, examples of the usage conditions of the performance range of the X-ray inspection device 2 include the weakest and strongest usage conditions during the period of the performance range. Specifically, in the maintenance timing presentation screen D1 shown in FIG. 9, which will be described later, the information of "June" in the area A1 and "June" in the center of the area A3 is calculated at this point. Specifically, the control unit 11 calculates the maintenance timing based on the actual frequency of the imaging conditions of the X-ray inspection apparatus 2. For example, the control unit 11 calculates the maintenance timing based on the number of times of use of the top three imaging conditions with the highest actual frequency of the imaging conditions of the X-ray inspection apparatus 2. The remaining number of uses may be calculated for each use condition (filament current and irradiation time) based on the device specifications of the X-ray inspection device 2. Specifically, the control unit 11 calculates the maintenance timing based on the device specifications of the X-ray inspection device 2. The device specifications of the X-ray inspection device 2 include, for example, the weakest conditions (tube voltage and tube current) and the strongest conditions (tube voltage and tube current) of the tube. Finally, the control unit 11 calculates the maintenance time in the same manner as above, using the use conditions obtained by modifying the use conditions under which the maintenance time was calculated to be looser and / or stricter (second maintenance time). The modification range is stored in the storage unit 15 before the maintenance schedule presentation process, and is automatically set by the control unit 11. Specifically, in the maintenance time presentation screen D1 shown in FIG. 9, which will be described later, the information on "April" and "August" in the area A1 and the information on "April" and "August" at the center of the area A3 are calculated at this point. At this point, a plurality of maintenance times are calculated. Note that the control unit 11 may also calculate the maintenance time in the same manner as above, using the use conditions under which the maintenance time was calculated, by modifying the frequency of use of the use conditions to be lower or higher (second maintenance time). As in the same manner as above, the modification range is stored in the storage unit 15 before the maintenance schedule presentation process, and is automatically set by the control unit 11. As a result of the above, not only the pinpointed time ("June" in the above example) but also a suggestion to advance / extend the maintenance schedule will be displayed on the maintenance schedule presentation screen D1 described below. In addition, when the calculation of the maintenance time is based on the device specifications, the conditions based on the device specifications cannot be loosened or tightened. Therefore, the maintenance time display screen D1 in FIG. 11 described later does not have multiple maintenance times.

[0046] The multiple maintenance periods may be calculated based on future use conditions and / or schedules input by the user, in addition to the usage history information. Specifically, it is assumed that the user inputs future experiment conditions and / or schedules into the storage unit 15 via the network N using the operation unit 33 before the start of the maintenance schedule presentation process. The user may use the operation unit 23 instead of the operation unit 13. Furthermore, in the calculation step, the control unit 11 calculates the amount of change in the X-ray inspection apparatus 2 since the last maintenance based on the usage history information (for example, temperature, vibration, visibility). The control unit 11 then calculates the time when the amount of change will exceed a threshold. The control unit 11 may then calculate multiple maintenance times based on the calculated time when the threshold will be exceeded. For example, an example will be described in which temperature is used from the usage history information. As the user uses the X-ray inspection apparatus 2, an error occurs in the measured temperature of the X-ray inspection apparatus 2, and the temperature varies. The control unit 11 acquires this variation as the amount of variation (amount of change). The control unit 11 calculates the time when the amount of variation will exceed a threshold previously stored in the storage unit 15 as the maintenance time. Then, similar to the above, the control unit 11 can calculate multiple maintenance times from this maintenance time.

[0047] Next, the control unit 11 presents a plurality of maintenance timings (step S4; presentation step). At this time, the control unit 11 functions as a presentation unit. Specifically, the control unit 11 causes at least one of the display units 12, 22, and 32 to display a maintenance timing presentation screen D1 as shown in FIG.

[0048] Here, the maintenance timing display screen D1 shown in FIG. 9 will be described. The maintenance time presentation screen D1 is a screen for presenting the maintenance time to a user of the X-ray inspection apparatus 2. For example, it may be displayed as a pop-up on the display unit 12. Also, for example, it may be displayed as a pop-up on the display unit 22 or the display unit 32 via the network N. Area A1 is an area that displays the multiple maintenance periods calculated in step S3. In the example of FIG. 9, multiple maintenance periods, "April," "June," and "August," are shown. Multiple maintenance periods calculated based on the conditions of the options in area A2, which will be described later, are shown in area A1. The user can select the period for which they would like to select a date. Various options are displayed in area A2. As an initial display, here, the calculation period is set to one month, and the shooting conditions are set to the actual range. When this option is changed and a remaining number of times redisplay button B1, which will be described later, is pressed, multiple maintenance times calculated in step S3 under the conditions of the changed option are displayed in area A1. The changed maintenance time display screen D1 is shown in Figs. 10 and 11, which will be described later. Area A3 is an area for presenting maintenance timing calculation conditions. The initial display is the maintenance timing calculation conditions from the options in area A2. The conditions in the center of area A3 are usage conditions based on usage history information (the "June" column). The conditions on both sides of area A3 are usage conditions that have been modified to be more lenient and / or more strict. The remaining number of times is displayed for each condition. Remaining number of times redisplay button B1 is a button for displaying in area A3 the remaining number of times that X-ray inspection apparatus 2 can be used until the maintenance time indicated in area A1, together with the imaging conditions. The schedule selection button B2 is a button for displaying on the display unit 12 a maintenance schedule presentation screen D2, which will be described later.

[0049] The maintenance timing display screen D1 shown in Fig. 10 will be described. Except for the following description, the description of the maintenance timing display screen D1 shown in Fig. 9 is the same as that of the maintenance timing display screen D1. In the area A2, the calculation period is set to one month, and the shooting condition is set to actual frequency. The maintenance timing display screen D1 shown in Fig. 11 will be described. Except for the following description, the maintenance timing display screen D1 is the same as that shown in Fig. 9. In the area A2, the imaging conditions are in a state where the device specifications are selected.

[0050] Next, the control unit 11 judges whether or not the user has selected a maintenance time (step S5). Specifically, the selection of a maintenance time refers to the selection of a period field in the area A1 of the maintenance time display screen D1 shown in Figs. 9 to 11 and the pressing of the remaining number of times redisplay button B1. If a maintenance time has been selected (step S5; YES), the maintenance schedule presentation process proceeds to step S6. If no maintenance time has been selected (step S5; NO), the process proceeds to step S1. A predetermined period of time passes, and the process of step S1 is executed after the predetermined period of time. When the maintenance timing is not selected, the control unit 11 may change the method of presenting the maintenance timing depending on the risk of failure (presence, or a gradual judgment such as high, medium, low, etc.). Specifically, the control unit 11 may change the method of presenting the maintenance timing presentation screen D1. Specifically, if there is a risk of failure in step S2, the control unit 11 may display a pop-up (step S4) for a predetermined period of time until a maintenance schedule is decided. Specifically, if the risk of failure is high in step S2, the control unit 11 may increase the frequency of pop-up display (step S4) until a maintenance schedule is decided. Specifically, in step S2, when the risk of failure is high, the control unit 11 may recommend an advanced schedule. The advanced schedule refers to an early period in the area A1. The advanced schedule is, for example, "April" in the area A1. Specifically, in step S2, if the risk of failure is low, the control unit 11 may reduce the frequency and display a pop-up (step S4). If the risk of failure is low, a postponed schedule or a schedule during the off-season for maintenance may be recommended. A postponed schedule refers to a later time in area A1. An example of a postponed schedule is "August" in area A1. A schedule during the off-season for maintenance is determined by the control unit 11 based on the schedule of the maintenance service group.

[0051] Next, the control unit 11 presents a plurality of maintenance schedules (step S6). Specifically, the control unit 11 causes at least one of the display units 12, 22, and 32 to display a maintenance schedule presentation screen D2 as shown in FIG.

[0052] Here, the maintenance schedule presentation screen D2 shown in FIG. 12 will be described. The maintenance schedule presentation screen D2 is a screen that allows the user to select a maintenance schedule. Area A4 is an area for selecting the month to be displayed in area A5. Area A5 is an area for displaying the maintenance schedule, the maintenance cost, and whether or not maintenance is possible. Schedules that are possible to maintain and have low maintenance costs are displayed prominently. Unavailable days are displayed so that they cannot be selected by the user. To determine whether maintenance is possible, the control unit 11 obtains, via the network N, the maintenance service group schedule stored in the memory unit 15, the schedule input by the user, and parts inventory and delivery date information, and adjusts the schedule based on this information. The control unit 11 adjusts the maintenance fee based on the schedule of the maintenance service group stored in the storage unit 15. If the schedule of the maintenance service group is in a busy season, the maintenance fee may be increased by a predetermined amount, and if it is in an off-season, the maintenance fee may be decreased by a predetermined amount. Button B3 is a button for shifting the schedule displayed in area A5 forward or backward. When button B3 is pressed, the schedule displayed in area A5 shifts forward or backward by a predetermined number of days.

[0053] Next, the control unit 11 judges whether or not the user has selected a maintenance schedule (step S7; adjustment step). At this time, the control unit 11 functions as an adjustment unit. If a maintenance schedule has been selected (step S7; YES), the maintenance schedule presentation process ends. If no maintenance schedule is selected (step S7; NO), proceed to step S1. A predetermined period is allowed to pass, and the process of step S1 is executed after the predetermined period. As in the case where no maintenance schedule is selected, the control unit 11 may display a pop-up on the display unit 12 even if no maintenance schedule is selected.

[0054] <Effects> As described above, the maintenance management method is a maintenance management method for an X-ray inspection device, and includes an acquisition step (step S1) of acquiring usage history information of the X-ray inspection device, a determination step (step S2) of determining a risk of failure based on the usage history information, a calculation step (step S3) of calculating multiple maintenance times based on the usage history information, and a presentation step (step S4) of presenting multiple maintenance times to a user, in which in the calculation step, the multiple maintenance times include a first maintenance time calculated based on usage conditions in the usage history information for a predetermined period and a second maintenance time calculated based on usage conditions different from the usage history information, and in the presentation step, the presentation method is changed according to the risk of failure. This makes it easier for the user to adjust the maintenance time of the X-ray inspection device.

[0055] The management device (maintenance schedule management server 1) is a management device that manages the maintenance timing of the X-ray inspection device, and includes an acquisition unit (control unit 11) that acquires usage history information of the X-ray inspection device, a determination unit (control unit 11) that determines the risk of failure based on the usage history information, a calculation unit (control unit 11) that calculates multiple maintenance timings based on the usage history information, and a presentation unit (control unit 11) that presents multiple maintenance timings to the user, in which the calculation unit calculates the multiple maintenance timings based on the usage conditions in the usage history information for a predetermined period and the second maintenance timings calculated based on the usage conditions different from the usage history information, and the presentation unit causes the display unit (display units 12, 22, 32) to present the maintenance timings using different presentation methods depending on the risk of failure. This makes it easier for the user to adjust the maintenance timing of the X-ray inspection device.

[0056] The display method is a display method for displaying a screen for maintenance management by the management device (maintenance timing presentation screen D1, maintenance schedule presentation screen D2), and displays a plurality of maintenance timings and conditions that are the premise for calculating the plurality of maintenance timings on the screen. Therefore, it becomes easier to adjust the maintenance timing of the X-ray inspection device.

[0057] The present invention has been specifically described above based on an embodiment, but it goes without saying that the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention. For example, in the above description, a hard disk or a non-volatile semiconductor memory is used as a computer-readable medium for the program according to the present invention, but the present invention is not limited to this example. As another computer-readable medium, a portable recording medium such as a CD-ROM can be used.

[0058] In addition, the detailed configuration and operation of each device may be modified as appropriate without departing from the spirit of the invention. [Explanation of symbols]

[0059] 100 Maintenance Schedule Management System 1 Maintenance schedule management server (management device) 11 Control unit (acquisition unit, determination unit, calculation unit, presentation unit, adjustment unit) 12 Display section 13 Control section 14 Communications Department 15 Storage section 2 X-ray inspection equipment 21 Control section 22 Display section 23 Control section 24 Communications Department 25 Memory section 26 Photography Department 3 Terminal Equipment 31 Control Unit 32 Display section 33 Operation section 34 Communications Department 35 Storage section N Communication Network

Claims

1. A maintenance management method using a management device that manages maintenance timing of an X-ray inspection device, comprising: an acquisition step of acquiring usage history information of the X-ray inspection apparatus; a determination step of determining a risk of failure based on the usage history information; A calculation step of calculating a plurality of maintenance timings based on the usage history information; A presentation step of presenting the plurality of maintenance timings to a user, In the calculation step, the plurality of maintenance times include a first maintenance time calculated based on a usage condition in the usage history information for a predetermined period of time, and a second maintenance time calculated based on a usage condition different from the usage history information, In the presenting step, The method of presentation is varied depending on the risk of the failure. Maintenance management method.

2. 2. The maintenance management method according to claim 1, further comprising an adjustment step of adjusting a maintenance schedule based on a user's selection of a maintenance time.

3. 2. The maintenance management method according to claim 1, wherein in the determining step, the risk of failure is determined based on the usage conditions and the operation period in the usage history information.

4. 2. The maintenance management method according to claim 1, wherein in said determining step, said risk of failure is determined based on visibility.

5. If it is determined in the determination step that the risk of the failure is high, 2. The maintenance management method according to claim 1, wherein in said presenting step, notification is made more frequently until a maintenance schedule is decided, and an advance schedule is recommended.

6. If it is determined in the determination step that the risk of the failure is low, The maintenance management method according to claim 1 , wherein in the presenting step, a less frequent notification is given and a postponed schedule or a schedule during a slow maintenance period is recommended.

7. 2. The maintenance management method according to claim 1, wherein in the calculation step, at least one of the second maintenance times is calculated under a usage condition in which the usage frequency is lower or higher than that of the first maintenance time.

8. 2. The maintenance management method according to claim 1, wherein in the calculation step, at least one of the second maintenance times is calculated under a condition in which a load on the X-ray inspection apparatus is lower or higher than that of the first maintenance time.

9. 2. The maintenance management method according to claim 1, wherein in the calculation step, the first maintenance time is calculated based on future use conditions and / or schedules input by a user in addition to the use conditions in the use history information.

10. In the calculation step, Calculating an amount of change in the X-ray inspection apparatus since the last maintenance based on the usage history information; Calculating the time when the amount of change exceeds a threshold value; The maintenance management method according to claim 1 , wherein the plurality of maintenance periods are calculated based on the period when the calculated threshold value is exceeded.

11. 2. The maintenance management method according to claim 1, wherein in the presenting step, in addition to the plurality of maintenance times, use conditions that are a premise for calculating the plurality of maintenance times are presented.

12. The maintenance management method according to claim 1 , wherein in the presenting step, a proposal to extend a maintenance interval is presented by changing a usage condition of the X-ray inspection apparatus.

13. The maintenance management method according to claim 1 , wherein the presenting step is performed when a state of the X-ray inspection apparatus satisfies a predetermined presenting condition.

14. 3. The maintenance management method according to claim 2, wherein in said adjusting step, the schedule is adjusted based on a schedule of a maintenance service group, a schedule input by a user, and information on inventory and delivery dates of parts.

15. The maintenance management method according to claim 1 , wherein the X-ray inspection device is an X-ray Talbot photography inspection device.

16. A management device for managing maintenance timing of an X-ray inspection device, an acquisition unit that acquires usage history information of the X-ray inspection apparatus; A determination unit that determines a risk of failure based on the usage history information; A calculation unit that calculates a plurality of maintenance timings based on the usage history information; A presentation unit that presents the plurality of maintenance timings to a user, In the calculation unit, the plurality of maintenance times include a first maintenance time calculated based on a usage condition in the usage history information for a predetermined period of time, and a second maintenance time calculated based on a usage condition different from the usage history information, In the presentation unit, Displaying the risk of failure on the display unit using different display methods according to the risk of failure. Management device.

17. A display method for displaying a maintenance management screen by the management device according to claim 16, comprising the steps of: A display method for displaying, on the screen, the plurality of maintenance times and the conditions that are the premise for calculating the plurality of maintenance times.

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