JP5634364B2 - Maintenance device, maintenance method and maintenance program - Google Patents

Description

  Embodiments described herein relate generally to a maintenance device such as an image forming apparatus, a maintenance method, and a maintenance program.

  Conventionally, in maintenance work of an image forming apparatus, when an abnormality occurs in the image forming apparatus, the situation is transmitted to a service person by telephone from a user. Then, the service person goes to the installation site and confirms the setting status of the image forming apparatus.

  Also, recently, in order to further improve serviceability, the aircraft in an online state (connected to a communication line such as the Internet) uses the communication line to detect aircraft information and errors when an abnormality is detected. A method of automatically transmitting information to a service center is used. Accordingly, it is possible to improve serviceability by contacting machine information such as the model, machine number, time of occurrence, machine status, and error message at the same time and using the information.

  However, in the market, there are still a large number of aircrafts that are offline (not connected to a communication line such as the Internet). In addition, there are many aircraft that do not provide machine information because of security problems even if connected to a communication line such as the Internet (for convenience, the aircraft in this state is hereinafter referred to as an “offline machine”).

  For such an offline machine, the machine information data of the image forming apparatus is temporarily stored in a personal computer owned by a service person, taken back to the service station, and then analyzed using a server. Alternatively, there is a method of connecting to a server and performing analysis on the spot by putting a personal computer online after storing data.

JP 2001-34447 A

  However, in the above-described prior art, when a serviceman manages several tens to several hundreds of aircrafts with a maintenance device, it becomes difficult to sufficiently grasp the set values of the individual aircrafts. For this reason, there was a strong demand to determine the priority of the aircraft whose status should be confirmed and to investigate efficiently based on it.

  SUMMARY OF THE INVENTION In view of the above-described problems of the prior art, the present invention has an object to provide a maintenance device, a maintenance method, and a maintenance program that enable a service person to grasp a machine body having a high priority in maintenance work from among a large number of maintenance target devices. And

Maintenance device according to an embodiment of the present invention, the reading unit, a communication unit, Ru with the outlier calculator and maintenance priority calculating unit. The reading unit reads a recording medium that stores setting information including the serial number, model name, setting item, and setting value of the machine to be subjected to maintenance work. A communication part acquires the statistical information regarding setting information for every model name from the server connected to the network. The outlier degree calculation unit compares the setting information read by the reading unit with the statistical information acquired by the communication unit, and calculates an outlier degree related to the setting value in the maintenance work . The maintenance priority calculator calculates the outliers calculated by the outlier calculator for each serial number, and calculates a priority in maintenance work for each serial number based on the result of the aggregation. The display unit displays a list of correspondence relationships between serial numbers and priorities in order of priority based on the input screen selection information, and determines the serial number, setting items, and outliers as outliers. The setting outliers and the setting outlier display screen for displaying a list of correspondences between the index values in the maintenance work based on the statistical information are switched and displayed.

The block diagram which shows an example of a structure of the maintenance apparatus which concerns on one Embodiment of this invention. FIG. 2 is a diagram illustrating an example of a relationship between the maintenance apparatus illustrated in FIG. 1 and an image forming apparatus. The figure which shows an example of the relationship between an image forming apparatus and an analysis server. The figure which shows the specific example of table T1 for machine information stored in the database for maintenance applications shown in FIG. The figure which shows the specific example of the error information table T2 memorize | stored in the database for maintenance applications shown in FIG. The figure which shows the specific example of the database column name and log data title correspondence table T3 memorize | stored in the database for maintenance applications shown in FIG. The figure which shows the specific example of the body setting list | wrist T4 memorize | stored in the database for maintenance applications shown in FIG. The figure which shows the specific example of the statistical data list | wrist T5 memorize | stored in the database for maintenance applications shown in FIG. The figure which shows the specific example of the outlier list | wrist T6 memorize | stored in the database for maintenance applications shown in FIG. The figure which shows the specific example of the setting item list | wrist T7 memorize | stored in the database for maintenance applications shown in FIG. The figure which shows the specific example of the weight table T8 of the setting item memorize | stored in the database for maintenance applications shown in FIG. The figure which shows the specific example of the maintenance priority list | wrist T9 memorize | stored in the database for maintenance applications shown in FIG. The figure which shows the specific example of the initial screen D1 of the maintenance apparatus shown in FIG. The figure which shows the specific example of the screen transition in the maintenance apparatus shown in FIG. The figure which shows the specific example of the acquisition screen D2 of the body information of the maintenance apparatus shown in FIG. The figure which shows the specific example of the connection screen D3 to the server of the maintenance apparatus shown in FIG. The figure which shows the specific example of the analysis screen D4 of the body information of the maintenance apparatus shown in FIG. The figure which shows the specific example of the outlier display screen D5 of the setting of the maintenance apparatus shown in FIG. The figure which shows the specific example of the maintenance priority display screen D6 of the maintenance apparatus shown in FIG. The flowchart which shows the specific example of the outline | summary of operation | movement of the maintenance apparatus shown in FIG. 14 is a flowchart showing a specific example of the operation of the maintenance apparatus when “Acquire Aircraft Information” is selected on the initial screen D1 shown in FIG. The flowchart which shows the specific example of the "data acquisition process" performed in "acquisition of body information" shown in FIG. 23 is a flowchart showing a specific example of “error information insertion processing” executed after “data acquisition processing” shown in FIG. 22; 14 is a flowchart showing a specific example of the operation of the maintenance device when “analysis of machine information” is selected on the initial screen D1 shown in FIG. 18 is a flowchart showing a specific example of the operation of the maintenance apparatus when “setting outlier” is selected on the machine information analysis screen D4 shown in FIG. The flowchart which shows the specific example of the "outlier detection process" shown to S102 of FIG. FIG. 3 is an explanatory diagram when the setting value of the developing bias potential setting is inappropriate in the maintenance device shown in FIG. 1. 14 is a flowchart showing a specific example of the operation of the maintenance device when “connect to server” is selected on the initial screen D1 shown in FIG. 29 is a flowchart showing a specific example of “statistical data acquisition processing” shown in S82 of FIG. 14 is a flowchart showing a specific example of the operation of the maintenance device when “maintenance priority” is selected on the initial screen D1 shown in FIG. 31 is a flowchart showing a specific example of “maintenance priority calculation processing” shown in S121 of FIG. 30.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing an example of the overall configuration of a maintenance apparatus 10 according to an embodiment of the present invention. As shown in FIG. 1, a maintenance device 10 according to the present embodiment includes a calculation unit 11 such as a CPU, a main storage unit 12 such as a memory, an auxiliary storage unit 13 such as an HDD (Hard Disc Drive) or a memory, and a display. A display device connection unit 14 that generates and supplies image information to be displayed on the display device 18 such as an input device, an input device connection unit 15 that is an interface with an input device 19 such as a mouse and a keyboard, and a USB (Universal Serial Bus) A reading unit 16 that is an interface of an external storage medium such as the memory 20 and a communication unit 17 that communicates by connecting to a network such as the Internet.

  However, since the maintenance device 10 is assumed to be carried by a serviceman to the aircraft installation destination, it is desirable that the maintenance device 10 be in a form that can be carried by the serviceman, for example, a laptop computer or an equivalent form.

  FIG. 2 is a diagram illustrating an example of the relationship between the maintenance apparatus 10 and the image forming apparatus M illustrated in FIG. Here, information such as setting information of the image forming apparatus M is not supplied to the maintenance apparatus 10 or the like online via a network such as a LAN, but is detachable recording such as a USB (Universal Serial Bus) memory 20 or the like. It is assumed that the data is supplied to the maintenance device 10 or the like in an offline state (not connected to a communication line such as the Internet) via a medium. In the current market, there are still a large number of offline image forming devices, etc., and even if they are connected to communication lines such as the Internet, they provide machine information due to security issues. This is due to the fact that there are many aircraft that do not exist.

  FIG. 3 is an explanatory diagram illustrating an example of the relationship between the image forming apparatus M and the analysis server S. Here, in a state where the image forming apparatus M is connected by the network N, the setting values are automatically collected by the analysis server S and accumulated on the analysis server S side, whereby the statistical data is updated in the analysis server S. It is shown to be done. When the service person returns to the service center after completing the maintenance work and connects the maintenance apparatus 10 to the analysis server S via the network N, the setting information collected in the maintenance apparatus 10 by the work of FIG. And are accumulated on the analysis server S side as in the case of FIG.

  The auxiliary storage unit 13 of the maintenance device 10 stores a maintenance application 131 for the image forming apparatus M and a maintenance application database 132 for the image forming apparatus M.

  The maintenance application 131 includes a screen transition control application 131A, a machine information acquisition application 131B, a machine information analysis application 131C, a server connection application 131D, a maintenance priority calculation / display application 131E, and the like. These applications are expanded from the auxiliary storage unit 13 onto the main storage unit 12 by the calculation unit 11 and executed.

The screen transition control application 131A is a program that controls screen transition from the initial screen D1 in response to a request from the user and calls various applications in response to operations on the screen.
The machine information acquisition application 131B is a program that, when a recording medium such as the USB memory 20 is connected, acquires setting information recorded on the recording medium by the reading unit 16 and stores it in the maintenance application database 132.

  The machine body information analysis application 131C is a program for analyzing the setting information stored in the maintenance application database 132 by the machine body information acquisition application 131B. Specifically, the body information analysis application 131C compares the setting information read by the reading unit 16 from the USB memory 20 with the statistical information acquired by the communication unit 17, and calculates an outlier degree related to the setting value (outlier degree degree). Calculation step) and outlier detection (outlier detection step) is performed for each setting item based on the calculated outlier degree and a predetermined threshold.

  The server connection application 131D establishes a connection between the communication unit 17 and the analysis server S in response to a request from the user, and uploads or analyzes the setting information of the aircraft stored in the maintenance device 10 to the analysis server S. This is a program that downloads statistical information from the server S and statistical information about the machine to be maintained from the analysis server S and stores it in the maintenance application database 132.

  The maintenance priority calculation / display application 131E is a program that calculates and displays the maintenance priority related to the maintenance target machine in response to a request from the user. Specifically, the maintenance priority calculation / display application 131E totals outlier degrees calculated in the outlier detection step of the aircraft information analysis application 131C for each serial number, and the result of the aggregation is calculated between the serial numbers. In comparison, the priority in maintenance work is calculated for each serial number (priority calculation step), and a maintenance priority display screen D6 based on the calculated priority is displayed (priority display step).

  The maintenance application database 132 includes, for example, a machine information table T1, an error information table T2, a database column name / log data title correspondence table T3, a machine setting list T4, a statistical data list T5, an outlier list T6, and an evaluation target. The setting item list T7, the setting item weight table T8, and the priority ranking list T9. Hereinafter, each table will be described in detail.

  FIG. 4 is a diagram showing a specific example of the machine information table T1 stored in the maintenance application database 132 shown in FIG. Here, the machine information table T1 is an identification number unique to each machine and is given by the analysis server S, a local ID that is a serial number in the machine information table T1, A serial number given by the manufacturer, which is a unique identification number for each machine, a model name that identifies the model, and error information detected by the machine is configured as a column.

  FIG. 5 is a diagram showing a specific example of the error information table T2 stored in the maintenance application database 132 shown in FIG. Here, the error information table T2 is an identification number unique to each machine, a global ID given by the analysis server S, a local ID that is a reference number in the machine information table T1, and each machine A serial number given by the manufacturer that is a unique identification number for the aircraft, a model name that identifies the model, a drive time that is the time that the aircraft is operating, the total number of printed pages per day, or the number of printed pages per day And a Jam occurrence count column that records the number of occurrences of jamming of paper in the machine.

  FIG. 6 is a diagram showing a specific example of the database column name / log data title correspondence table T3 stored in the maintenance application database 132 shown in FIG. Here, the database column name / log data title correspondence table T3 is composed of a DB (database) column name and a log data title column. The driving time corresponds to the execution time or the actual operation time, and the number of printed sheets corresponds to the number of printed sheets or the print counter.

  FIG. 7 is a diagram showing a specific example of the aircraft setting list T4 stored in the maintenance application database 132 shown in FIG. Here, the machine setting list T4 is a local ID that is a serial number in the machine setting list T4, a model name that identifies the model, and a setting code that is a code assigned to the setting item of the image forming apparatus to be evaluated. , And a setting value column that is a value set in this setting item.

  FIG. 8 is a diagram showing a specific example of the statistical data list T5 stored in the maintenance application database 132 shown in FIG. Here, the statistical data list T5 includes a model name that identifies the model, a setting code that is a code assigned to the setting item of the image forming apparatus to be evaluated, and the number of samples used in creating the statistics. Used to determine whether the number of samples to mean, the average value that is the average value of the sample values, the mode value that means the most frequent value in the sample, the standard deviation of the sample, and whether the set value is an outlier It consists of a threshold column.

  FIG. 9 is a diagram showing a specific example of the outlier list T6 stored in the maintenance application database 132 shown in FIG. Here, the outlier list T6 is an identification number unique to each machine, and is assigned to a serial number given by the manufacturer, a model name identifying the model, and setting items of the image forming apparatus to be evaluated. Setting code, setting value that is the value set for this setting item, average value that is the average value of sample values, mode value that means the most frequent value in the sample, and other setting values It is composed of an outlier degree column that means the degree of deviation from the set value of the aircraft.

  FIG. 10 is a diagram showing a specific example of the setting item list T7 stored in the maintenance application database 132 shown in FIG. As shown in the figure, the setting item list T7 to be evaluated includes a setting item related to a process, a setting item related to a scanner, a setting item related to a printer, and a setting item related to a system.

In other words, as setting items related to the process,
“Charging grid bias adjustment, High voltage manual adjustment Charging, High voltage manual adjustment Color development, High voltage manual adjustment Primary transfer constant voltage, High voltage manual adjustment Secondary transfer constant voltage, High voltage manual adjustment Static neutralization blade, High voltage manual adjustment Secondary transfer constant current, Charging grid calibration voltage value, development bias calibration voltage value, laser power calibration light quantity value, laser power calibration light reference D / A value, Vo sensor output, potential sensor output when Vo sensor shutter is closed, laser power output adjustment, primary transfer Bias standard mode execution value, primary transfer resistance detection offset, primary transfer destination trailing edge bias execution value, primary transfer destination trailing edge bias correction coefficient, secondary transfer bias color execution value, secondary transfer bias monochrome execution value, paper surface bias Offset, paper surface secondary leading and trailing edge bias correction coefficient, paper back surface secondary leading and trailing edge bias correction coefficient, primary transfer constant Current transformer adjustment value, primary transfer constant voltage transformer adjustment value, secondary transfer constant current transformer adjustment value, secondary transfer constant voltage transformer adjustment value, static elimination bias adjustment value, high voltage manual adjustment Static elimination blade (high), high voltage manual adjustment 1 Next transfer constant current, fixing temperature (heat roller), heater forced ON time, fixing temperature (press roller), 1st print prerun operation time, abnormal process start fixing temperature setting, forced heater ON number threshold, ready permission temperature range, Ready prerun Fixing motor deceleration, ready prerun operation time, ready fixing temperature, ready temperature drop switching time, print start permission temperature range, print operation temperature holding time setting at the end of printing, fixing control temperature lower limit value, print temperature drop switching time, preheat Ready ready temperature correction at recovery, sleep / preheat recovery time limit setting, print speed switching temperature, power There are variable lower limit value, variable power range, lower limit holding temperature range during power drop, heating time during preheating, control temperature holding time when returning from sleep, fixing temperature transition time during preheating, and fixing temperature increment during preheating transition.

In addition, as setting items related to the scanner,
“CCD main scanning deviation, scanner sub-scanning deviation, scanner sub-scanning magnification, distortion, shading position adjustment, ADF aligning amount, ADF transport speed fine adjustment, ADF lateral deviation, ADF tip position adjustment, carriage position adjustment during ADF reading” Exists.

The setting items related to the process printer are as follows:
“Polygon motor rotation fine adjustment, laser launch position, ADU transport motor speed fine adjustment, cassette lateral deviation adjustment, ADU lateral deviation adjustment, top margin, left margin, right margin, bottom margin, top margin, left margin, right margin, bottom margin, Tip position adjustment CST1 adjustment value, tip position adjustment CST2 adjustment value, tip position adjustment CST3 adjustment value, tip position adjustment CST4 adjustment value, tip position adjustment Manual feed adjustment value, tip position adjustment ADU adjustment value, tip position adjustment TLCF adjustment value, tip Position adjustment OLCF adjustment value, 1st cassette aligning amount, 2nd cassette aligning amount, manual feed aligning amount, 3rd cassette aligning amount, 4th cassette aligning amount, ADU feed aligning amount, tandem LCF Paper aligning amount, after manual feed Push amount adjustment, drum motor speed fine adjustment, registration motor speed fine adjustment, transfer belt motor speed fine adjustment, heat roller speed fine adjustment, paper feed motor speed fine adjustment, fixing paper discharge motor speed fine adjustment, skew deviation amount adjustment value, polygon There are motor stop time, feed retry count setting value, manual stapling timeout time, and continuous printing interruption specified time [minute] for alignment.
In addition, as a setting item regarding the system, there is “default setting value of blank sheet determination adjustment threshold at power-on”.

  FIG. 11 is a diagram showing a specific example of the setting item weight table T8 stored in the maintenance application database 132 shown in FIG. Here, the setting item weight table T8 includes a model name, a setting code, and a column of weights indicating the degree of error occurrence.

  FIG. 12 is a diagram showing a specific example of the maintenance priority list T9 stored in the maintenance application database 132 shown in FIG. Here, the maintenance priority list T9 includes a serial number, a model name, a number indicating the number of outliers of setting values detected by outlier detection, and a priority column indicating the degree of priority maintenance. It is configured. In the present embodiment, the maintenance priority list T9 is registered and updated in the maintenance application database 132 by the above-described maintenance priority calculation / display application 131E.

  Note that the configuration of the embodiment of the present invention described above is merely an example, and actual implementation is not limited to this configuration. For example, the maintenance application database 132 may be constituted by a single table or a plurality of tables (based on the relational data model), and is an alternative to the maintenance application database 132 such as a csv file. It may be configured.

  Further, by using the serial number and the model name as the primary key, the image forming apparatus under management including the analysis server S can be uniquely determined regardless of the products of the company or other companies. Other combinations include a serial number and manufacturer name.

≪Maintenance device operation screen≫
Next, an operation screen of the maintenance device 10 will be described.

  FIG. 13 is a diagram showing a specific example of the initial screen D1 of the maintenance apparatus 10 shown in FIG. Here, in the initial screen D1, there are 4 items associated with an “acquisition of aircraft information” button 50, an “analysis of aircraft information” button 51, a “connect to server” button 52, and a “maintenance priority display” button 53, respectively. One menu is prepared, and the user operates the input device 19 to select a menu to be executed. The operation information is input to the maintenance device 10 through the input device connection unit 15. When the “end” button is pressed, the initial screen D1 is closed and the processing is ended. Here, the “machine” refers to the image forming apparatus M, and the image forming apparatus M includes a multifunction device, a printer, a scanner, a fax machine, and the like.

  FIG. 14 is a diagram showing a specific example of screen transition in the maintenance apparatus shown in FIG. As shown in the figure, the maintenance device 10 has a plurality of operation screens that transition from the initial screen D1. Here, it is shown that the initial screen D1 can transit to the aircraft information acquisition screen D2, the server connection screen D3, the aircraft information analysis screen D4, and the maintenance priority screen D6, respectively, and can return from the transition destination. . Similarly, the machine information analysis screen D4 can transition to the setting outlier display screen D5, and can return from the setting outlier display screen D5. In some cases, the maintenance priority display screen D6 transitions to the body information analysis screen D4.

  FIG. 15 is a diagram showing a specific example of the machine information acquisition screen D2 of the maintenance apparatus 10 shown in FIG. Here, a “drive selection” combo box 54 for designating an external recording device storing machine data, a “machine selection” list 55 for designating which machine data to input to the maintenance application database 132, and “ A button 56 for returning to the initial screen D1 is provided.

  FIG. 16 is a diagram showing a specific example of the connection screen D3 to the analysis server S of the maintenance device 10 shown in FIG. In this screen, there are a “connect to server” button 61 and a “statistical data acquisition” button 62, and each processing is executed when the button is pressed. When the “return to initial screen D1” button 63 is pressed, the screen transitions to the initial screen D1.

  FIG. 17 is a diagram showing a specific example of the machine information analysis screen D4 of the maintenance apparatus 10 shown in FIG. In this screen, when the “display” button 72 is pressed, the error information of the machine selected in the list of the “machine selection” combo box 71 and the counter information such as the number of printed sheets are analyzed and aggregated, and the error tendency of the machine is detected. And the usage status are presented to the error analysis result section 73 as a chart. When the “return to initial screen D1” button 74 is pressed, the screen transitions to the initial screen D1. When the “setting outlier” button 75 is pressed, the screen shifts to a setting outlier display screen D5. When there are a plurality of aircrafts that can be displayed, the aircraft is selected from the list of the “aircraft selection” combo box 71.

  FIG. 18 is a diagram showing a specific example of the outlier display screen D5 of the setting of the maintenance device 10 shown in FIG. This screen includes an outlier display section 76 for displaying the contents of the outlier list T6 and a “return” button 77. The user can select a serial number, model name, setting code, setting value, and setting value in the same model. It is possible to grasp the relationship of the average value of. When the “return” button 77 is pressed, the screen transitions to the machine information analysis screen D4.

  FIG. 19 is an explanatory diagram showing an example of the maintenance priority display screen D6 of the maintenance apparatus 10 shown in FIG. In this screen, there are a maintenance priority display portion 81 for displaying the contents of the maintenance priority list T and a “return to initial screen” button 82. The user can select the maintenance priority (order), serial number, model name. The relationship between the number of outliers and the maintenance priority can be grasped. When the “return to initial screen D1” button 82 is pressed, the screen transitions to the initial screen D1.

<< Operation of entire maintenance device >>
Hereinafter, the operation of the maintenance apparatus 10 according to the present embodiment will be described in detail with reference to FIGS. 20 to 31. FIG. 20 is a flowchart illustrating a specific example of an outline of the operation of the maintenance device 10.
In S <b> 11, the screen transition control application 131 </ b> A displays the initial screen D <b> 1 on the display device 18 via the display device connection unit 14 and waits for an input from the user input device 19.
In S12, the screen transition control application 131A determines whether or not the “acquire aircraft information” button 50 is pressed on the initial screen D1. Here, when it is determined that the “acquisition of aircraft information” button 50 has been pressed on the initial screen D1 (S12: YES), the aircraft information acquisition application 131B is started and “acquisition of aircraft information” is executed (described later). Figure 21). On the other hand, if it is determined that the “acquisition of aircraft information” button 50 is not pressed on the initial screen D1 (S12: NO), the process proceeds to S13.

  In S13, the screen transition control application 131A determines whether or not the “analyze body information” button 51 is pressed on the initial screen D1. Here, if it is determined that the “analyze machine information” button 51 is pressed on the initial screen D1 (S13: YES), the machine information analysis application 131C is activated and “analyze machine information” is executed (described later). 24). On the other hand, when it is determined that the “analyze body information” button 51 is not pressed on the initial screen D1 (S13: NO), the process proceeds to S14.

  In S14, the screen transition control application 131A determines whether or not the “connect to server” button 52 is pressed on the initial screen D1. If it is determined on the initial screen D1 that the “connect to server” button 52 has been pressed (S14: YES), the server connection application 131D is activated and “connect to server” is executed (FIG. 28 described later). ). On the other hand, if it is determined that the “connect to server” button 52 is not pressed on the initial screen D1 (S14: NO), the process proceeds to S15.

  In S15, the screen transition control application 131A determines whether or not the “maintenance priority display” button 53 is pressed on the initial screen D1. Here, when it is determined that the “maintenance priority display” button 53 is pressed on the initial screen D1 (S15: YES), the priority calculation / display application 131E is activated and “maintenance priority display” is executed. (FIG. 30 described later). On the other hand, when it is determined that the “maintenance priority display” button 53 is not pressed on the initial screen D1 (S15: NO), the process proceeds to S16.

  In S16, the screen transition control application 131A determines whether or not the “end” button has been pressed on the initial screen D1. Here, when it is determined that the “end” button is pressed on the initial screen D1 (S16: YES), the initial screen D1 is closed and the processing is ended. On the other hand, when it is determined that the “end” button is not pressed on the initial screen D1 (S16: NO), the process returns to S12.

≪Obtain aircraft information≫
FIG. 21 is a flowchart illustrating “acquisition of aircraft information”. As shown in the flowchart of FIG. 20 described above, this process is performed from the screen transition control application 131A when the user presses the “acquire aircraft information” button 50 on the initial screen D1 (S12: YES in FIG. 20). It is executed when the acquisition application 131B is activated.

In S21, the aircraft information acquisition application 131B displays an acquisition screen D2 of aircraft information.
In S22, the aircraft information acquisition application 131B determines whether the “return to initial screen” button 56 is pressed on the acquisition screen D2 of aircraft information. Here, when it is determined that the “return to initial screen” button 56 has been pressed (S22: YES), the screen transition control application 131A is started and the process returns to the initial screen D1. On the other hand, when it is determined that the “return to initial screen” button 56 has not been pressed (S22: NO), the machine information acquisition application 131B causes the “drive selection” combo box 54 to designate an external recording device. Then, the reading unit 16 is prompted to connect an external recording device such as a USB memory (S23), and when the external recording device is connected, the process proceeds to S24.

  In S24, the machine information acquisition application 131B determines whether there is data that can be added to the maintenance application database 132 in the external recording device. Data is stored so that it can be retrieved for each aircraft, and data acquisition is performed for each aircraft data. If it is determined that there is data that can be added (S24: YES), the aircraft information acquisition application 131B adds the serial number and model name of the aircraft having data that can be acquired to the aircraft selection list 55 (S25). , Go to S27. On the other hand, if it is determined that there is no data that can be added (S24: NO), the process proceeds to S26.

In S26, the aircraft information acquisition application 131B returns to the initial screen D1 when pop-up displaying that there is no data that can be acquired.
In S27, the aircraft information acquisition application 131B determines whether there is any other data that can be acquired. If it is determined that there are other data that can be acquired (S27: YES), the process returns to S25, and the same process is repeated while there is data that can be acquired. On the other hand, when it is determined that there is no other data that can be acquired (S27: NO), the acquisition list (aircraft selection list 55) is presented on the airframe information acquisition screen D2 (S28), and the process proceeds to S29.

  In S29, the aircraft information acquisition application 131B determines whether the “take in” button is pressed in the acquisition list (aircraft selection list 55) of the aircraft information acquisition screen D2 and acquisition data is selected. If it is determined that the acquisition data has been selected (S29: YES), the aircraft information acquisition application 131B proceeds to a data acquisition process of FIG. On the other hand, when it is determined that the acquired data is not selected (S29: NO, the standby state is maintained until it is selected.

[Data acquisition processing]
FIG. 22 is a flowchart showing a specific example of “data acquisition process” executed in “acquisition of machine information” shown in FIG. This process is started when the data to be acquired is determined as described above (S29: YES in FIG. 21).

  In S31, the aircraft information acquisition application 131B acquires the serial number, model name, and error information of the selected aircraft. Specifically, the machine information acquisition application 131B uses the database column name / log data title correspondence table T3 to acquire error information while absorbing errors between the machines. Although it is assumed that the error information varies depending on the model and manufacturer, data standardization is also progressing, and it seems that a certain amount of information can be acquired by each aircraft. In order to obtain more information, the database column name / log data title correspondence table T3 is used here. The error information refers to data other than the serial number and model name, and may include data that is not directly related to the error, such as the driving time and the number of printed sheets. The error information is composed of a title (type of data) and data (value).

  In S32, the machine information acquisition application 131B scans the machine information table T1 in the maintenance application database 132 based on the serial number and model name acquired in S31.

  In S33, the aircraft information acquisition application 131B determines whether there is data of the same aircraft as the acquired data. Here, as a result of scanning using the serial number and model name of each of the acquired data and the data in the maintenance application database 132 as a key, there is a match between the data acquired by these two items and the data in the maintenance application database 132. When it is determined that it exists (S33: YES), this is determined as the “same aircraft”, and the process proceeds to S34 to perform the processing of “when the same aircraft exists” described below. On the other hand, if it is determined that there is no match (S33: NO), the process proceeds to S39 to perform the following “when the same aircraft does not exist” process.

  In S34, the aircraft information acquisition application 131B acquires a global ID and a local ID, and issues the same global ID and local ID as the existing data to the data acquired in S31. Then, after deleting the existing record (S35), a new record is created (S36), and the local ID, global ID, serial number, and model name of the record to be acquired are inserted into the machine information table T1 (S37, S38), the process proceeds to error information insertion processing to be described later with reference to FIG.

  In S39, the aircraft information acquisition application 131B issues a new local ID because there is no data for the same aircraft. At this time, the local ID is determined so as not to be duplicated in the database. For example, the local ID takes a positive integer value, and when a new local ID is issued, the local ID is set to +1 to the maximum of the issued local IDs. In this method, the local ID is incremented by 1 each time it is issued, and the local ID does not overlap. Then, after creating a new record in the machine information table T1 (S40), the local ID, serial number, and model name of the data to be acquired are inserted (S41, S38), and the error information insertion process of FIG. Do.

[Error information insertion processing]
FIG. 23 is a flowchart showing a specific example of “error information insertion processing” executed after “data acquisition processing” shown in FIG. This process is started after the determination of the existence of existing data and the record operation are completed as described above.

  In S51, the aircraft information acquisition application 131B determines whether there is unchecked data in the error information. This is determined from its own position with respect to the length of the error information array. If it is determined that there is unchecked data (S51: YES), the data title is acquired (checked) (S52), and the process proceeds to S53. On the other hand, if it is determined that there is no unchecked data (S52: NO), the error information check is terminated and the process returns to the initial screen D1.

  In S53, the machine information acquisition application 131B determines whether the title acquired in S52 is the same as the title existing in the column name of the error information table T2. If it is determined that the acquired title is the same as the title existing in the column name of the error information table T2 (S53: YES), the process proceeds to S54. On the other hand, when it is determined that the acquired title is not the same as the title existing in the column name of the error information table T2 (S53: NO), the database column name / log data title correspondence table T3 is referred to (S56), Proceed to S57.

  In S57, the aircraft information acquisition application 131B determines whether or not the title exists in the correspondence table T3. If it is determined that the title exists in the correspondence table T3 (S57: YES), the data insertion destination is changed to the corresponding column (S58), and the process proceeds to S54. On the other hand, when it is determined that no title exists in the correspondence table (S57: NO), the process returns to S51. In the correspondence table, the column name of the maintenance application database 132 and the title of the error information corresponding to the column name are recorded. By referring to this, the difference in the title of the error information can be corrected.

  In S54, the machine information acquisition application 131B determines whether the data type matches the data type of the data insertion destination column. If it is determined that the data type matches the data type of the data insertion destination column (S54: YES), the data is inserted (S55), the process returns to S51, and there is data that has not been checked again. Judge whether or not. On the other hand, if it is determined that the data type does not match the data type of the data insertion destination column (S54: NO), after the acquired data is converted to the data type of the data insertion destination column (S59), Data is inserted (S55). Then, the process returns to S51 to determine whether there is data that has not been checked again.

≪Analysis of aircraft information≫
FIG. 24 is a flowchart showing a specific example of the operation of the maintenance apparatus 10 when “analysis of machine information” is selected on the initial screen D1 shown in FIG. As shown in the flowchart of FIG. 20 described above, this process is performed when the user presses the “analyze body information” button 51 on the initial screen D1 (S13: YES in FIG. 20) from the screen transition control application 131A. This is executed when the analysis application 131C is activated.

In S61, the aircraft information analysis application 131C displays an aircraft information analysis screen D4 as shown in FIG.
In S62, the aircraft information analysis application 131C scans the aircraft information table T1 in the maintenance application database 132.

  In S63, the aircraft information analysis application 131C determines whether there is data that can be analyzed. If it is determined that there is one or more data that can be analyzed (S63: YES), the process proceeds to S65. On the other hand, if it is determined that there is no data that can be analyzed (S63: NO), the process proceeds to S64.

  In S64, the aircraft information analysis application 131C displays a popup that there is no data that can be analyzed on the aircraft information analysis screen D4, and returns to the initial screen D1.

  In S65, the aircraft information analysis application 131C determines whether or not the “display” button 72 has been pressed on the aircraft information analysis screen D4. Here, if it is determined that the “display” button 72 has been pressed (S65: YES), the aircraft information analysis application 131C acquires the value of the selected list 71 (S66), and data of the selected aircraft. (S67), the analysis result of the selected aircraft is displayed (S68), and the process proceeds to S70. On the other hand, if it is determined that the “display” button 72 has not been pressed (S65: NO), the aircraft information analysis application 131C proceeds to S69.

  In S69, the aircraft information analysis application 131C determines whether or not the “return to initial screen D1” button 74 is pressed on the aircraft information analysis screen D4. If it is determined that the “return to initial screen D1” button 74 has been pressed (S69: YES), the process returns to the initial screen D1. On the other hand, when it is determined that the “return to initial screen D1” button 74 has not been pressed (S69: NO), the process proceeds to S70.

  In S70, the aircraft information analysis application 131C determines whether or not the “setting outlier” button 75 is pressed on the aircraft information analysis screen D4. If it is determined that the setting outlier button 75 has been pressed on the machine information analysis screen D4 (S70: YES), the process proceeds to an outlier display process in FIG. Transition to the value display screen D5. On the other hand, when it is determined that the setting outlier button 75 has not been pressed (S70: NO), the process returns to S65.

≪Setting outlier display≫
[Setting outlier display processing]
FIG. 25 is a flowchart showing a specific example of the operation of the maintenance device 10 when “setting outlier” is selected on the machine information analysis screen D4 shown in FIG.

  In S101, the aircraft information analysis application 131C displays a setting outlier display screen D5.

  In S102, the aircraft information analysis application 131C executes outlier detection processing. Details of the outlier detection processing will be described later with reference to FIG.

  In S103, the aircraft information analysis application 131C determines whether or not the “return” button 74 is pressed on the aircraft information analysis screen D4. If it is determined that the “return” button 74 has been pressed (S103: YES), the aircraft information analysis application 131C returns to the aircraft information analysis screen D4. On the other hand, if it is determined that the “return” button 74 is not pressed (S103: NO), the standby state is maintained until the button is pressed.

[Outlier detection processing]
FIG. 26 is a flowchart showing a specific example of the “outlier detection process” shown in S102 of FIG. This outlier detection process is performed for all data included in the aircraft setting list T4. The outlier detection process may be executed in parallel with the acquisition of the machine information from the external recording device such as the USB memory 20, or the user may arbitrarily execute the already acquired data. Here, the latter case will be described.

In S111, the aircraft information analysis application 131C extracts the local ID, model name, setting code, and setting value from the aircraft setting list T4 shown in FIG.
In S112, the aircraft information analysis application 131C searches the statistical data list T5 shown in FIG. 8 for a setting value that matches the model name and the setting code.

  In S113, the aircraft information analysis application 131C determines whether there is a setting value in which the model name matches the setting code. If it is determined that there is a matching set value (S113: YES), the average value, standard deviation, and threshold value are acquired, an outlier detection method is applied (S114), and the process proceeds to S115.

  In S114, if the setting item is a nominal scale and the average value is not calculated, the mode value is acquired, and if the setting value does not match the mode value, it is set as an outlier. In the case of the nominal scale, the degree of outlier is represented by two values: an outlier (= 1) and not an outlier (= 0). On the other hand, if it is determined that there is no matching line (S113: NO), the process returns to S111 and proceeds to the processing of the next setting code. A specific outlier detection method will be described later.

  In S115, the aircraft information analysis application 131C determines whether or not the set value is an outlier. If it is determined that the set value is an outlier (S115: YES), the machine information table T1 is searched for a line that matches the local ID, the serial number is acquired, and the serial number, model name, and setting are set. The code, the set value, the mode value, and the outlier degree are added to the outlier list T6 as shown in FIG. 9 (S116), and the process proceeds to S117. On the other hand, when it is determined that the set value is not an outlier (S115: NO), the process proceeds to S117.

  In S117, the aircraft information analysis application 131C determines whether there is an unprocessed set value. If it is determined that there is an unprocessed set value (S117: YES), the process returns to step 111 and the same process is continued until there is no unprocessed set value. That is, all model names and setting codes registered in the aircraft setting list T4 are executed. On the other hand, if it is determined that there is no unprocessed set value (S117: NO), the process ends.

Hereinafter, the outlier detection method will be described in detail. Basically, an outlier degree related to a set value is calculated, and if it exceeds a threshold value, it is determined as an outlier.
For example, assuming that the set value follows a normal distribution, there is a method in which the set value is regarded as an outlier if the set value is larger than three times the standard deviation from the average value. If the set value is x, the average is μ, and the standard deviation is σ, the outlier degree is | x−μ | / σ. If the threshold is 3, the outlier value is satisfied if the following conditional expression (1) is satisfied. is there.

| x−μ | / σ> 3 (1)
This method is general as outlier detection, and this method is usually used. It may be doubled instead of three times the standard deviation. In this case, more set values can be extracted as outliers.

ここで、Σは分散共分散行列を表す。複数の設定値に互いに関係があり、分散共分散行列を予め分析サーバＳで計算していた場合はこの式を使うと良い。互いに関係のある設定値はなく、単独の設定値を評価するときのマハラノビス距離Ｄ_Ｍは下記の式（３）で表され、このマハラノビス距離Ｄ_Ｍが所定の閾値を超えたら、ｘを外れ値と決定する。

各設定項目には設計段階で決まる推奨設定の範囲があり、この範囲を超えたものを外れ値とみなすことができる。閾値の下限をθl、閾値の上限をθhとすると、次の式（４）を満たす設定値ｘが外れ値となる。 It may also be carried out outliers detected as outlier degree the Mahalanobis distance D _M. Mahalanobis distance D _M is defined as the following equation (2).

Here, Σ represents a variance covariance matrix. If there is a relationship between a plurality of setting values and the variance-covariance matrix has been calculated in advance by the analysis server S, this formula should be used. Not setting values that are related to each other, the Mahalanobis distance D _M when evaluating a single setting value is represented by the following formula (3), after exceeding the Mahalanobis distance D _M is the predetermined threshold value, outlier x And decide.

Each setting item has a range of recommended settings determined at the design stage, and items exceeding this range can be regarded as outliers. If the lower limit of the threshold is θl and the upper limit of the threshold is θh, the set value x satisfying the following equation (4) is an outlier.

x <θl, θh <x (4)
The outlier degree in this case is represented by two values, which are outliers (= 1) and not outliers (= 0).

  In the above, three kinds of outlier detection methods have been exemplified, but the method is not limited to this. For example, it is possible to adopt a method of statistically selecting outliers such as the Smirnov-Grubbs test.

  When the outlier detection process is completed, the contents of the outlier list T6 are displayed on the outlier display unit 76 to alert the user. At this time, the setting code having no average value displays the mode value instead. For example, as shown in the setting outlier display screen D5 shown in FIG. 18, setting items that are not commonly set for each aircraft are listed, and an index that is a reference for the setting is displayed, so that the user can review the setting value. Prompting you to prevent potential errors.

  FIG. 27 is an explanatory diagram when the setting value of the developing bias potential setting of the maintenance device 10 shown in FIG. 1 is inappropriate. In FIG. 27, when (1) development bias potential, (2) intermediate length exposure potential, and (2) solid image exposure potential, development is performed when (1) <(2). If (1)> (2), the image may not be developed. If such setting values are inappropriate, problems may occur, but in order to prevent this, it is assumed to indicate to the user how far the setting values of the aircraft deviate from the general setting method.

  The machine setting information is stored in the maintenance application database 132 of the maintenance apparatus 10 in a table structure like a machine setting list T4 shown in FIG. Airframe setting list T4 includes a local ID, a model name, a setting code, and a setting value. Each setting item is expressed by a setting code, and a certain setting item is uniquely determined by a model name and a setting code.

  In order to determine an outlier of the setting, it is first necessary to know an average setting value, which is acquired as statistical data from the analysis server S. As shown in FIG. 3, the analysis server S is connected to the market image forming apparatus M through the network N, and the error information and setting information of the image forming apparatus M for which the permission of the installation destination has been obtained, Collected regularly with ID. The statistical data is calculated in advance on the analysis server S based on the market machine data collected via the network N and the data collected from the machine not connected to the network using the maintenance device 10. Updated.

  The statistical data is basically a summary of the average value, standard deviation, and number of samples for each setting code for each type of aircraft. In addition, when the set value is not a continuous value, for example, when the attribute is a nominal scale, the average value cannot be obtained, so the mode value is obtained. Moreover, in order to determine an outlier, there are threshold values (upper limit and lower limit) designated in advance for each setting. This is a setting range assumed at the time of designing the image forming apparatus or a value determined empirically. The average value may be a median value instead of an arithmetic average depending on the property of the setting item. If a plurality of settings are related to each other, the covariance between the setting values is obtained and included in the statistical data, so that it can be used for outlier detection based on the Mahalanobis distance described later.

  Further, in order to increase the detection accuracy of outliers, it is of course possible to acquire more data from the server S, such as enormous raw data before aggregation, rather than statistical data. However, the maintenance device 10 is assumed to be a mobile terminal carried by a service person, and considering that there are limitations on functions such as CPU and storage capacity, it is preferable that less data is downloaded and stored from the analysis server S.

≪Connect to server≫
FIG. 28 is a flowchart showing a specific example of the maintenance apparatus when “Connect to Server” is selected on the initial screen D1 shown in FIG. As shown in the flowchart of FIG. 20 described above, this process is performed when the user presses the “connect to server” button 52 on the initial screen D1 (S14: YES in FIG. 20) from the screen transition control application 131A to the server connection application. It is executed when 131D is activated.

In S71, the server connection application 131D displays a connection screen D3 on the server S.
In S72, the server connection application 131D determines whether or not the “connect to server” button 61 is selected on the server connection screen D3. If it is determined that the “connect to server” button 61 is selected (S72: YES), the process proceeds to S72. On the other hand, if it is determined that the “connect to server” button 61 is not selected (S72: NO), the process proceeds to S81.

  In S73, the server connection application 131D confirms that the data collection analysis server S can be accessed through the communication unit 17. If it is determined that the server can be connected to the analysis server S (S73: YES), the server connection application 131D searches the machine information table T1 in the maintenance application database 132 (S74), and proceeds to S75. On the other hand, if it is determined that the analysis server S cannot be connected (S73: NO), the process proceeds to S80.

  In S75, the server connection application 131D determines whether there is data to which a global ID has not yet been allocated. If it is determined that there is data to which a global ID has not yet been allocated (S75: YES), the process proceeds to S76. On the other hand, if it is determined that the data does not exist (S75: NO), the process proceeds to S78.

  In S76, the server connection application 131D uploads the serial number and model name to the analysis server S and requests the issuance of a global ID. In S76, when the application itself is assigned an ID, or when the analysis server S can identify the application accessing the analysis server S by some method such as a MAC address, the server connection application 131D has the serial number. Instead of uploading the model name, the global ID can also be requested by uploading the local ID (and information for recognizing the application).

  However, in consideration of a case where a plurality of service personnel visit the same aircraft, it is preferable to upload information such as a serial number and model name that can identify the aircraft without depending on the application.

  In S77, when the global ID is issued from the analysis server S, the server connection application 131D receives it, inserts it into the global ID column, and returns to S74.

  In S78, when the global ID is assigned to all the aircraft, the server connection application 131D determines whether there is an aircraft that has not been uploaded. Here, if it is determined that there are aircraft that have not been uploaded (S78: YES), the global ID and error information are uploaded to the analysis server S (S79), and the process returns to S78. On the other hand, if it is determined that there is no aircraft that has not been uploaded (S78: NO), the process returns to the initial screen D1.

  Note that in S79 described above, the server connection application 131D can also load the machine setting information in the maintenance application database 132 in addition to the error information. The “machine setting” is a setting item related to the operation of the image forming apparatus, such as adjustment of the scan position, adjustment of margins of the upper, lower, left, and right sides of the paper, and adjustment of the speed of the motor. Alternatively, an item representing the state of the aircraft, such as a firmware version, is also included. The user can change these setting values from the factory-shipped state according to the usage frequency and usage of the machine.

  At this time, a setting value that is not intended by mistake may be set, or a setting value that is not very common may be set. As long as any value has been reflected as a setting, this is not an error in itself and it is difficult for the person who sets it to notice it. However, by continuing to operate in this state, depending on the combination of setting values, the possibility that the aircraft will potentially cause an error increases. In the present embodiment, such a set value is dealt with by an outlier detection process described later.

  In S81, the server connection application 131D determines whether or not the “acquire statistical data” button 62 has been selected. If it is determined that the “acquire statistical data” button 62 has been selected (S81: YES), statistical data acquisition processing is performed (S82), and the process returns to S72. Details of the statistical data acquisition process will be described later with reference to FIG. On the other hand, when it is determined that the “acquire statistical data” button 62 is not selected (S81: NO), the process proceeds to S83.

  In S83, the server connection application 131D determines whether or not the “return to initial screen” button 63 has been selected. If it is determined that the “return to initial screen” button 63 is selected (S83: YES), the process returns to the initial screen D1. On the other hand, if it is determined that the “return to initial screen” button 63 is not selected (S83: NO), the process returns to S72.

[Statistical data acquisition processing]
FIG. 29 is a flowchart showing a specific example of the “statistical data acquisition process” shown in S82 of FIG.
In S91, the server connection application 131D starts “statistical data acquisition processing when the statistical data acquisition button 62 is input on the connection screen D3 to the server S. First, all model names included in the aircraft setting list T4 are selected. , Get as a list without duplication.

In S92, the server connection application 131D transmits the model name list and the statistical data acquisition request to the analysis server S via the communication unit 17.
In S <b> 93, the server connection application 131 </ b> D transmits a statistical data list calculated in advance for the model name corresponding to the received model name list, and the maintenance device 10 receives this.

  In S94, the server connection application 131D updates the existing statistical data list T5 with the newly acquired statistical data list, and ends the statistical data acquisition process. The setting item weight table T8 need not be frequently updated, but can be acquired from the server simultaneously with the statistical data list T5 and updated.

≪Maintenance priority display≫
[Maintenance priority display processing]
FIG. 30 is a flowchart showing a specific example of the maintenance apparatus when “maintenance priority display” is selected on the initial screen D1 shown in FIG. As shown in the flowchart of FIG. 20 described above, this process is performed when the user presses the “Connect to Server” button 52 on the initial screen D1 (S15: YES in FIG. 20) from the screen transition control application 131A. It is executed when the calculation / display application 131E is activated.

In S121, the maintenance priority calculation / display application 131E executes a maintenance priority calculation process. Details of the maintenance priority calculation process will be described later with reference to FIG.
In S122, the maintenance priority calculation / display application 131E displays the maintenance priority list T9 stored in the application database 132 on the maintenance priority display screen D6.

  In S123, the maintenance priority calculation / display application 131E determines whether or not the “return to initial screen” button 82 is pressed on the maintenance priority display screen D6. If it is determined that the “return to initial screen” button 82 has been pressed (S123: YES), the process returns to the initial screen D1. On the other hand, if it is determined that the “return to initial screen” button 82 has not been pressed (S123: NO), the process proceeds to S124.

  In S124, the maintenance priority calculation / display application 131E determines whether or not a machine row has been selected in the priority list of the maintenance priority display screen D6. Here, when it is determined that the row of the aircraft has been selected (S124: YES), the screen transitions to an analysis screen D4 of aircraft information relating to the aircraft. On the other hand, when it is determined that the machine row is not selected (S124: NO), the process returns to S123.

[Maintenance priority calculation]
FIG. 31 is a flowchart showing a specific example of the “maintenance priority calculation process” shown in S121 of FIG. This process is not executed unless data of at least one aircraft is stored in the outlier list T6.

In S131, the maintenance priority calculation / display application 131E first sorts the outlier list T6 with respect to serial numbers and model names.
In S132, the maintenance priority calculation / display application 131E determines whether there is data that can be acquired in the outlier list T6. If it is determined that there is data that can be acquired (S132: YES), the serial number and model name are extracted (S133), and the process proceeds to S134. On the other hand, when it is determined that there is no data that can be acquired (S132: NO), the process proceeds to S140.

  In S134, the maintenance priority calculation / display application 131E refers to the maintenance priority list T9 and determines whether or not the acquired serial number and model name are a new serial number and model name. If it is determined that the serial number and model name are new (S134: YES), that is, if the serial number and model name change when data is acquired, the serial number, model name, number, and priority are changed. The data is output to the maintenance priority list (S135), the priority and the number are initialized to 0 (S136), and the process proceeds to S137. On the other hand, if it is determined that the serial number and model name are not new (S134: NO), the process proceeds to S137.

  In S137, the maintenance priority calculation / display application 131E acquires weights related to the model name and the setting code from the setting item weight table T8. Then, the product of the outlier degree and the weight is obtained, added to the priority (S138), and 1 is added to the number of outliers (S139), the process returns to S132 and the same processing is performed while there is data that can be acquired. repeat.

  In S140, the maintenance priority calculation / display application 131E outputs no information about the last machine to the maintenance priority list T9 because there is no data that can be acquired, and ends the maintenance priority calculation process.

  As described above, in the maintenance device 10 according to the present embodiment, the outlier is detected by comparing the statistical value of the airframe setting with the airframe setting based on the statistical information of the market data collected by the analysis server S. Present it on 10 screens. By calculating the maintenance priority of the aircraft based on the outliers, even if the number of aircraft managed by the maintenance device increases, it is possible to know the aircraft that should preferentially check the set value, so that an error can be prevented. There is an effect that can be prevented. That is, by downloading the statistical information from the analysis server S to the maintenance device 10 in advance when online, maintenance work can be sequentially performed from the machine body having a high priority at the site. Further, after the serviceman returns to the service center, if the maintenance device 10 is connected online to the analysis server S, the analysis server S can be updated with the setting information in the maintenance device 10 and the latest statistical information in the maintenance device 10 Therefore, the service person can obtain the maintenance priority among a large number of aircrafts he / she is in charge of with higher accuracy, and can contribute to the efficiency of the subsequent maintenance work.

  Further, in this embodiment, the maintenance priority is calculated based on the sum of products of the outlier degree and the weight defined in advance for each setting item, but may be determined based on the number of outliers. For example, in comparison with statistical information acquired from the analysis server S, when an outlier is detected in Aircraft A in 20 items, outlier in Aircraft B is detected in 25 items, and outlier is detected in Aircraft C in 8 items, The maintenance priority can be determined in the order of B, Aircraft A, and Aircraft C. This is useful when it is difficult to predefine weights between setting items.

  Furthermore, the various types of processing shown in the present embodiment may be realized by hardware, or may be realized by the calculation unit 11 such as a CPU executing a computer program stored in the auxiliary storage unit 13 such as a memory. be able to. Therefore, the embodiment of the present invention can be grasped as hardware such as an electronic circuit, or can be grasped as a computer program.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Maintenance apparatus 11 ... Operation part 12 ... Main memory part 13 ... Auxiliary memory part 14 ... Display apparatus connection part 15 ... Input device connection part 16 ... Reading part 17 ... Communication part 18 ... Display apparatus 19 ... Input device 131 ... Maintenance application 131A ... Screen transition control application 131B ... Airframe information acquisition application 131C ... Aircraft information analysis application 131D ... Server connection application 131E ... Maintenance priority calculation / display application 132 ... Maintenance application database M ... Image forming apparatus N ... Network S ... Analysis server

Claims (12)

A reading unit that reads a recording medium that stores setting information including a serial number, a model name, a setting item, and a setting value of an aircraft to be subjected to maintenance work;
For each model name from a network-connected server, a communication unit that acquires statistical information related to the setting information;
An outlier degree calculating unit that calculates the outlier degree related to the set value in the maintenance work by comparing the setting information read by the reading unit with the statistical information acquired by the communication unit;
A maintenance priority calculation unit that aggregates the outlier degrees calculated by the outlier degree calculation unit for each serial number and calculates a priority in the maintenance operation for each serial number based on the result of the aggregation. When,
A maintenance priority display screen that displays a list of correspondence relationships between the serial numbers and the priorities in the order of the priorities based on the input screen selection information, and the serial numbers, the setting items, and the outliers are outliers. A display unit that switches and displays the setting value determined to be and a setting outlier display screen that displays a list of correspondences of index values in the maintenance work based on the statistical information;
A maintenance device comprising:   2. The maintenance priority calculating unit calculates the priority for each serial number based on a sum of products of a weight defined in advance for each setting item and the outlier degree. The maintenance device described.   The maintenance apparatus according to claim 1, wherein the maintenance priority calculation unit calculates the priority for each serial number based on a total number of outliers.   The maintenance apparatus according to claim 1, wherein the recording medium read by the reading unit is a USB memory. A reading step of reading a recording medium storing setting information including a serial number, a model name, a setting item, and a setting value of an aircraft to be subjected to maintenance work;
For each model name from a network-connected server, communication step for obtaining statistical information on the setting information;
An outlier degree calculating step of calculating the outlier degree related to the set value in the maintenance work by comparing the setting information read in the reading step with the statistical information acquired in the communication step;
A maintenance priority calculation step of totalizing the outlier degrees calculated in the outlier degree calculation step for each serial number and calculating a priority in the maintenance operation for each serial number based on the result of the aggregation When,
A maintenance priority display screen that displays a list of correspondence relationships between the serial numbers and the priorities in the order of the priorities based on the input screen selection information, and the serial numbers, the setting items, and the outliers are outliers. A display step of switching and displaying the set value determined to be and a setting outlier display screen for displaying a list of correspondences of index values in the maintenance work based on the statistical information;
The maintenance method characterized by comprising.   The said maintenance priority calculation step calculates the said priority for every said serial number based on the sum total of the product of the weight defined beforehand for every said setting item, and the said outlier degree. The maintenance method described.   6. The maintenance method according to claim 5, wherein the maintenance priority calculation step calculates the priority for each serial number based on the total number of outliers.   The maintenance method according to claim 5, wherein the recording medium read in the reading step is a USB memory. A reading step of reading a recording medium storing setting information including a serial number, a model name, a setting item, and a setting value of an aircraft to be subjected to maintenance work;
For each model name from a network-connected server, communication step for obtaining statistical information on the setting information;
An outlier degree calculating step of calculating the outlier degree related to the set value in the maintenance work by comparing the setting information read in the reading step with the statistical information acquired in the communication step;
A maintenance priority calculation step of totalizing the outlier degrees calculated in the outlier degree calculation step for each serial number and calculating a priority in the maintenance operation for each serial number based on the result of the aggregation When,
A maintenance priority display screen that displays a list of correspondence relationships between the serial numbers and the priorities in the order of the priorities based on the input screen selection information, and the serial numbers, the setting items, and the outliers are outliers. A display step of switching and displaying the set value determined to be and a setting outlier display screen for displaying a list of correspondences of index values in the maintenance work based on the statistical information;
A maintenance program for causing a computer to execute.   10. The maintenance priority calculating step calculates the priority for each serial number based on a sum of products of a weight defined in advance for each setting item and the outlier degree. The maintenance program described.   The maintenance program according to claim 9, wherein the maintenance priority calculation step calculates the priority for each serial number based on a total number of the outliers.   The maintenance program according to any one of claims 9 to 11, wherein the recording medium read in the reading step is a USB memory.

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