JP2020160688A - Information processing device, determination method and determination program - Google Patents

Abstract

To determine whether a failure that has occurred in a maintenance target device is an accidental failure or a failure due to user negligence.SOLUTION: A maintenance target device 100 comprises a registration unit 150a and a determination unit 150b. The registration unit 150a acquires information on whether or not a predetermined error has occurred in the maintenance target device to register the number of times of error occurrence in a table for each predetermined period. When an output value of a sensor that detects an impact on the maintenance target device is equal to or higher than a threshold value, the determination unit 150b identifies the frequency of error occurrence before the reference time and the frequency of error occurrence after the reference time based on the reference time when the output value of the sensor is equal to or higher than the threshold value and the table, and determines whether or not a failure due to an impact has occurred based on the frequency of error occurrence before the reference time and the frequency of error occurrence after the reference time.SELECTED DRAWING: Figure 1

Description

The present invention relates to an information processing device and the like.

For the purpose of reducing costs, companies use maintenance services to rent laptop computers and provide them to each employee instead of purchasing laptop computers. In the following description, devices such as laptop computers that are subject to maintenance services will be referred to as "maintenance target devices". By paying the maintenance service provider the fee agreed upon at the time of the maintenance contract, the company can receive regular maintenance of the equipment to be maintained and a guarantee in case of failure.

Japanese Unexamined Patent Publication No. 2006-254207 Japanese Unexamined Patent Publication No. 2003-345627 Japanese Unexamined Patent Publication No. 2012-203431

However, there is a problem that it is not possible to determine whether the failure that occurs in the maintenance target device is an accidental failure or a failure due to the user's negligence.

For example, when a failure occurs in a device to be maintained, it is difficult to objectively determine whether it is an accidental failure or a failure due to the user's negligence, and it depends on the self-report by the user. In addition, when the user gives a shock to the maintenance work device and causes it to break down, a part of the failure is temporarily covered by the function provided in the maintenance work device, and the user notices the influence of the failure. It may take some time. In such a case, the user may mistakenly think that the failure is an accidental failure even if the failure is due to the user's negligence.

In one aspect, the present invention provides an information processing device, a determination method, and a determination program capable of determining whether a failure occurring in a maintenance target device is an accidental failure or a failure due to user negligence. The purpose is to provide.

In the first plan, the information processing device has a registration unit and a determination unit. The registration unit acquires information on whether or not a predetermined error has occurred in the maintenance target device, and registers the number of times of error occurrence in the table for each predetermined period. When the output value of the sensor that detects the impact on the maintenance target device exceeds the threshold value, the judgment unit determines the error before the reference time based on the reference time when the output value of the sensor exceeds the threshold value and the table. The frequency of occurrence of errors and the frequency of errors after the reference time are specified, and based on the frequency of errors before the reference time and the frequency of errors after the reference time, a failure due to an impact has occurred. Judge whether or not.

It is possible to determine whether the failure that occurred in the maintenance target device is an accidental failure or a failure due to the user's negligence.

FIG. 1 is a functional block diagram showing a configuration of a maintenance target device according to this embodiment. FIG. 2 is a diagram showing an example of the data structure of the sensor information storage unit according to this embodiment. FIG. 3 is a diagram showing an example of the data structure of the I / O log table according to this embodiment. FIG. 4 is a diagram showing an example of the data structure of the G sensor recording table according to this embodiment. FIG. 5 is a flowchart (1) showing a processing procedure of the maintenance target device according to the present embodiment. FIG. 6 is a flowchart (2) showing a processing procedure of the maintenance target device according to the present embodiment. FIG. 7 is a diagram showing an example of a hardware configuration of a computer that realizes the same functions as the maintenance target device according to the present embodiment.

Hereinafter, examples of the information processing apparatus, determination method, and determination program disclosed in the present application will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

FIG. 1 is a functional block diagram showing a configuration of a maintenance target device according to this embodiment. The maintenance target device 100 is an example of an information processing device. As shown in FIG. 1, the maintenance target device 100 includes a communication unit 101, an input unit 102, a display unit 103, a timer 104, an impact sensor 105, a recording control unit 110, a sensor information storage unit 115, a storage unit 140, and a control unit. Has 150.

For example, the maintenance target device 100 corresponds to a terminal device that can be carried by a user such as a notebook PC (Personal computer) or a tablet computer. Further, although the description is omitted, it is assumed that the maintenance target device 100 has the same function as that of a general notebook PC.

Here, the maintenance target device 100 includes a battery (not shown), and uses the power of the battery to execute various processes. The battery shall constantly supply electric power to the timer 104, the impact sensor 105, the recording control unit 110, and the sensor information storage unit 115.

The communication unit 101 is a processing unit that executes data communication with an external device via a network. The communication unit 101 corresponds to the communication device. The control unit 150, which will be described later, exchanges data with an external device via the communication unit 101.

The input unit 102 is an input device for inputting various information to the maintenance target device 100. For example, the input unit 102 corresponds to a keyboard, a mouse, a touch panel, and the like.

The display unit 103 is a display device for displaying various information output from the control unit 150. For example, the display unit 103 corresponds to a liquid crystal display, a touch panel, or the like.

The timer 104 is a device that generates current date and time information. The timer 104 outputs the date and time information to the recording control unit 110 and the control unit 150.

The impact sensor 105 is a sensor that outputs a "G sensor value" indicating the magnitude of the acceleration (or speed) of the impact given to the maintenance target device 100. The impact sensor 105 outputs the G sensor value to the recording control unit 110.

The recording control unit 110 compares the G sensor value output from the impact sensor 105 with the threshold value Thg. The threshold Thg is a preset value. When the G sensor value becomes the threshold value Thg or more, the recording control unit 110 specifies the time when the G sensor value becomes the threshold value Thg or more based on the date and time information output from the timer 104. In the following description, the date and time when the G sensor value becomes the threshold value Thg or more is referred to as “reference date and time”. The recording control unit 110 registers the reference date and time with the G sensor value at the reference date and time in the sensor information storage unit 115. The reference date and time is an example of the reference time.

The sensor information storage unit 115 is a storage unit that stores the reference date and time and the G sensor value in association with each other. For example, the sensor information storage unit 115 corresponds to a semiconductor memory element such as a flash memory (Flash Memory).

FIG. 2 is a diagram showing an example of the data structure of the sensor information storage unit according to this embodiment. As shown in FIG. 2, the sensor information storage unit 115 holds the reference date and time and the G sensor value in association with each other. In the example shown in FIG. 2, it is shown that the G sensor value becomes the threshold value Thg or more and the G sensor value is “250” at the reference date and time “12:15 on December 1, 2018”.

Returning to the description of FIG. The storage unit 140 has an I / O (Input / Output) log table 140a and a G sensor recording table 140b. The storage unit 140 corresponds to a semiconductor memory element such as a RAM (Random Access Memory) or a flash memory, or a storage device such as an HDD (Hard Disk Drive).

The I / O log table 140a is a table that holds a history of the number of I / O errors for each predetermined time. The I / O error indicates the number of input / output errors of a predetermined I / O device included in the maintenance target device 100. In this embodiment, as an example, the input / output error of the storage unit 140 is regarded as an I / O error.

FIG. 3 is a diagram showing an example of the data structure of the I / O log table according to this embodiment. As shown in FIG. 3, the I / O log table 140a associates the date and time with the number of I / O errors. In this embodiment, as an example, it is assumed that the number of I / O errors every 10 minutes is registered in the I / O log table 140a. For example, in the I / O log table 140a, a record indicating that the number of I / O errors that occurred between the date and time "12:00 to 12:10 on December 1, 2018" is "1" is registered.

The G-sensor recording table 140b is a table that holds information on the frequency of occurrence of the number of errors before and after the reference date and time when the G-sensor value of the impact sensor 105 becomes the threshold value Thg or more.

FIG. 4 is a diagram showing an example of the data structure of the G sensor recording table according to this embodiment. As shown in FIG. 4, the G-sensor recording table 140b associates the date and time, the G-sensor value, the number of immediately preceding I / O errors, and the number of I / O errors. In this embodiment, as an example, information is registered every 10 minutes.

As the G sensor value of FIG. 4, the G sensor value of the impact sensor 105 having a threshold value Thg or more is registered. In the example shown in FIG. 4, the G sensor value of the impact sensor 105 is equal to or higher than the threshold value Thg at the date and time "12:10 to 12:20 on December 1, 2018", and the G sensor value is "250". It is registered that there is.

The number of I / O errors in a straight line indicates the number of I / O errors that occurred in the previous time interval. For example, the number of I / O errors immediately before the date and time "12:10 to 12:10 on December 1, 2018" corresponds to the date and time "12:00 to 12:10 on December 1, 2018". The number of I / O errors to be performed.

The description of the number of I / O errors in FIG. 4 is the same as the description of the number of I / O errors described in FIG.

Returning to the description of FIG. The control unit 150 includes a registration unit 150a, a determination unit 150b, and a screen information generation unit 150c. The control unit 160 can be realized by a CPU (Central Processing Unit), an MPU (Micro Processing Unit), or the like. The control unit 160 can also be realized by hard-wired logic such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

The registration unit 150a monitors a predetermined I / O device included in the maintenance target device 100, counts the number of I / O errors for each predetermined time, associates the date and time with the number of I / O errors, and performs I / O. This is a processing unit registered in the O log table 140a. In this embodiment, as an example, the registration unit 150a monitors the input / output of data in the storage unit 140 and counts the number of I / O errors every 10 minutes.

The registration unit 150a sets the number of I / O errors in the G sensor recording table 140b based on the I / O log table 140a. For example, the registration unit 150a sets the number of I / O errors corresponding to each date and time of the I / O log table 140a as the number of I / O errors corresponding to each date and time of the G sensor recording table 140b.

The registration unit 150a sets the number of I / O errors that occurred at the time interval immediately before the date and time of interest as the number of I / O errors immediately before the date and time corresponding to the date and time of the G sensor recording table 140b. For example, the registration unit 150a sets the number of I / O errors "1" corresponding to the date and time "12:00 to 12:10 on December 1, 2018" to the date and time "12:10 on December 1, 2018". Register as the number of I / O errors immediately before "~ 12: 20". The registration unit 150a repeatedly executes the above process for the number of I / O errors immediately before each.

Further, the registration unit 150a refers to the sensor information storage unit 115 and determines whether or not the information of the reference date and time and the G sensor value is registered. When the information of the reference date and time and the G sensor value is registered in the sensor information storage unit 115, the registration unit 150a specifies the date and time corresponding to the reference date and time among the dates and times of the G sensor recording table 140b. The G sensor value is registered at the specified date and time.

For example, as shown in FIG. 2, it is assumed that the reference date and time "12:15 on December 1, 2018" and the G sensor value "250" are registered in the sensor information storage unit 115. In this case, the registration unit 150a sets "250" for the G sensor value corresponding to the date and time "12:10 to 12:20 on December 1, 2018" in the G sensor recording table 140b of FIG. ..

The determination unit 150b is a processing unit that determines whether or not a failure due to an impact given to the maintenance target device 100 has occurred based on the G sensor recording table 140b. The determination unit 150b outputs the determination result to the screen information generation unit 150c. An example of the processing of the determination unit 150b will be described below.

The determination unit 150b determines whether or not an impact having a G sensor value of the threshold value Thg or more is applied to the maintenance target device 100 based on the G sensor recording table 140b. When the G sensor value is registered in the G sensor recording table 140b, the determination unit 150b determines that the maintenance target device 100 is impacted so that the G sensor value becomes the threshold value Thg or more. On the other hand, when the G sensor value is not registered in the G sensor recording table 140b, the determination unit 150b determines that the maintenance target device 100 is not impacted so that the G sensor value becomes the threshold value Thg or more.

Here, when the determination unit 150b determines that the maintenance target device 100 is subjected to an impact having a G sensor value of the threshold value Thg or more, the difference error count of the number of I / O errors before and after the impact is applied. Is calculated. When the number of difference errors is equal to or greater than the threshold value Th1, the determination unit 150b determines that "a failure due to user negligence has occurred". The threshold Th1 is preset.

The determination unit 150b may calculate the number of difference errors in any way. For example, in the example shown in FIG. 4, at the date and time "12:10 to 12:20 on December 1, 2018", an impact that the G sensor value becomes the threshold value Thg or more is given. The determination unit 150b is the difference between the number of I / O errors "10" corresponding to this "12:10 to 12:20 on December 1, 2018" and the immediately preceding I / O error number "1". "9" may be calculated as the number of difference errors.

The determination unit 150b executes the following processing when an impact that makes the G sensor value equal to or greater than the threshold value Thg is not applied, or when the number of difference errors is less than the threshold value Th1.

The determination unit 150b refers to the G sensor recording table 140b, compares the number of I / O errors with the threshold value Th2 at predetermined time intervals, and counts the number of times the threshold value Th2 is exceeded. When the number of times counted becomes the threshold value Th3 or more, the determination unit 150b determines that "a failure has occurred in the maintenance target device (although it is unknown whether it is an accidental failure or a failure due to user negligence)". Further, the determination unit 150b specifies the date and time when the number of times counted becomes the threshold value Th3 or more. In the following description, the date and time when the number of times counted becomes the threshold value Th3 or more is referred to as "failure date and time". The threshold value Th2 and the threshold value Th3 are set in advance.

When the determination unit 150b determines that "a failure has occurred in the maintenance target device 100 (although it is unknown whether it is an accidental failure or a failure due to user negligence)", the determination unit 150b executes the following processing.

The determination unit 150b refers to the G sensor recording table 140b and determines whether or not an impact having a G sensor value of the threshold value Thg or more is applied to the maintenance target device 100. The determination unit 150b did not give an impact to the maintenance target device 100 such that the G sensor value is equal to or higher than the threshold value Thg, and said, "(It is unknown whether the failure is an accidental failure or a failure due to the user's fault). When it is determined that "a failure has occurred", it is determined that "an accidental failure has occurred".

On the other hand, when the determination unit 150b determines that the maintenance target device 100 is given an impact having a G sensor value of the threshold value Thg or more, the determination unit 150b determines the period from the reference date and time to the failure date and time. Determine if it is longer than the period. Such a predetermined period is set in advance.

When the impact that the G sensor value becomes the threshold value Thg or more is given to the maintenance target device 100 and the period from the reference date and time to the failure date and time is less than a predetermined period, the determination unit 150b "user". A failure due to negligence has occurred. "

When the impact that the G sensor value becomes the threshold value Thg or more is given to the maintenance target device 100 and the period from the reference date and time to the failure date and time is longer than a predetermined period, the determination unit 150b "(accidental). (Although it is unknown whether it is a failure due to a malfunction or a user's fault), it is determined that a failure has occurred in the device to be maintained. The determination unit 150b outputs information on the reference date and time and the failure date and time to the screen information generation unit 150c.

The screen information generation unit 150c is a processing unit that generates warning screen information when receiving information from the determination unit 150b that a failure has occurred in the maintenance target device 100. The screen information generation unit 150c outputs the information of the warning screen to the display unit 103 and displays it.

When the screen information generation unit 150c receives the determination result of "an accidental failure has occurred" from the determination unit 150b, the screen information generation unit 150c sets the text information indicating that an accidental failure has occurred as the information on the warning screen. Output to the display unit 103.

When the screen information generation unit 150c receives the determination result of "a failure due to user negligence has occurred" from the determination unit 150b, the screen information generation unit 150c sets the text information indicating that the failure due to user negligence has occurred as the information on the warning screen. To do. Further, the screen information generation unit 150c sets the reference date / time, the failure date / time, and the information of the G sensor recording table 140b as the information on the warning screen, and outputs the information to the display unit 103.

When the screen information generation unit 150c receives a determination result from the determination unit 150b that "a failure has occurred in the maintenance target device (although it is unknown whether it is an accidental failure or a failure due to user negligence)", a failure occurs. Set the text information to that effect as the information on the warning screen. Further, the screen information generation unit 150c sets the reference date / time, the failure date / time, and the information of the G sensor recording table 140b as the information on the warning screen, and outputs the information to the display unit 103.

Next, an example of the processing procedure of the maintenance target device 100 according to this embodiment will be described. 5 and 6 are flowcharts showing a processing procedure of the maintenance target device according to the present embodiment. FIG. 5 will be described. The registration unit 150a of the maintenance target device 100 monitors the number of I / O errors in the storage unit 140, and starts registration in the I / O log table 140a and the G sensor recording table 140b (step S101).

The recording control unit 110 of the maintenance target device 100 determines whether or not the G sensor value output from the impact sensor 105 is equal to or greater than the threshold value Thg (step S102). When the G sensor value is equal to or higher than the threshold value Thg (steps S103, Yes), the recording control unit 110 proceeds to step S104. On the other hand, when the G sensor value is less than the threshold value Thg (steps S103, No), the recording control unit 110 shifts to step S108.

The recording control unit 110 registers the information of the reference date and time and the G sensor value in the sensor information storage unit 115 (step S104). The registration unit 150a registers the G sensor value in the G sensor recording table 140b (step S105).

The determination unit 150b of the maintenance target device 100 calculates the difference error count of the I / O error counts before and after the impact (step S106). When the number of difference errors is equal to or greater than the threshold value Th1 (step S107), the determination unit 150b proceeds to step S119 of FIG.

The determination unit 150b compares the number of I / O errors with the threshold Th2 at predetermined time intervals, and counts the number of times exceeding the threshold Th2 (step S108). The determination unit 150b determines whether or not the number of times counted is equal to or greater than the threshold value Th3 (step S109).

When the number of times counted is not the threshold value Th3 or more (step S110, No), the determination unit 150b proceeds to step S102. On the other hand, when the number of times counted is the threshold value Th3 or more (step S110, Yes), the determination unit 150b shifts to step S111 in FIG.

The description shifts to FIG. The determination unit 150b determines that a failure has occurred in the maintenance target device 100 (step S111). The determination unit 150b determines whether or not a record of the G sensor value exists in the G sensor recording table 140b (step S112).

The determination unit 150b determines that an accidental failure has occurred (step S113) when there is no record of the G sensor value in the G sensor recording table 140b (step S112, No). The screen information generation unit 150c generates a warning screen indicating that an accidental failure has occurred and displays it on the display unit 103.

On the other hand, when the G sensor value recording exists in the G sensor recording table 140b (step S112, Yes), the determination unit 150b determines whether or not the period from the reference date and time to the failure date and time is less than the predetermined period. (Step S115).

When the period from the reference date and time to the failure date and time is not less than the predetermined period (step S116, No), the determination unit 150b displays the reference date and time, the failure date and time, and the G sensor recording table 140b on the warning screen. Information is set (step S117). The screen information generation unit 150c displays a warning screen indicating that a failure has occurred (step S118).

On the other hand, when the period from the reference date and time to the failure date and time is less than the predetermined period (step S116, Yes), the determination unit 150b determines that the user's negligent failure has occurred (step S116, Yes). S119), the reference date and time, the failure date and time, and the information of the G sensor recording table 140b are set on the warning screen (step S120). The screen information generation unit 150c displays a warning screen indicating that a failure has occurred due to user negligence (step S121).

Next, the effect of the maintenance target device 100 according to this embodiment will be described. The registration unit 150a of the maintenance target device 100 registers the number of I / O errors for each predetermined time in the I / O log table 140a, and registers the number of immediately preceding I / O errors in the G sensor recording table 140b. Execute repeatedly. Further, when the G sensor value is registered in the sensor information storage unit 115, the registration unit 150a registers the G sensor value in the G sensor recording table 140b. Then, the determination unit 150b of the maintenance target device 100 is caused by the impact based on the G sensor recording table 140b and the number of I / O errors before and after the reference date and time when the G sensor value becomes the threshold value Thg or more. Determine if a failure has occurred. This makes it possible to determine whether the failure that occurred in the maintenance target device is an accidental failure or a failure due to the user's negligence due to the impact.

When the number of difference errors is equal to or greater than the threshold value Th1, the maintenance target device 100 determines that "a failure due to user negligence has occurred". Alternatively, when the maintenance target device 100 is given an impact such that the G sensor value is equal to or higher than the threshold value Thg and the period from the reference date and time to the failure date and time is less than a predetermined period, the maintenance target device 100 is set to ". A failure has occurred due to user negligence. " This makes it possible to objectively determine a failure due to user negligence.

The maintenance target device 100 is not subject to the impact that the G sensor value is equal to or higher than the threshold Thg, and the maintenance target device 100 is "(although it is unknown whether it is an accidental failure or a failure due to user error). When it is determined that "a failure has occurred in the device", it is determined that "an accidental failure has occurred". This makes it possible to objectively determine an accidental failure.

The maintenance target device 100 has information on the G sensor recording table 140b when the final determination result is "a failure has occurred in the maintenance target device (although it is unknown whether it is an accidental failure or a failure due to user negligence)". Set the reference date and time, failure date and time, etc. on the warning screen and display them. This makes it easier for the maintenance manager to determine whether the failure is an accidental failure or a failure due to the user's negligence.

Next, an example of a computer hardware configuration that realizes the same functions as the maintenance target device 100 shown in this embodiment will be described. FIG. 7 is a diagram showing an example of a hardware configuration of a computer that realizes the same functions as the maintenance target device according to the present embodiment.

As shown in FIG. 7, the computer 300 includes a CPU 301 that executes various arithmetic processes, an input device 302 that receives data input from a user, and a display 303. Further, the computer 300 has a reading device 304 that reads a program or the like from a storage medium, and an interface device 305 that exchanges data with an external device or the like via a wired or wireless network. The computer 300 includes a RAM 306 that temporarily stores various information, a hard disk device 307, and an impact sensor module 308. Then, each of the devices 301 to 308 is connected to the bus 309. The impact sensor module 308 is a device having the functions of the impact sensor 105, the recording control unit 110, and the sensor information storage unit 115 shown in FIG.

The hard disk device 307 includes a registration program 307a, a determination program 307b, and a screen information generation program 307c. The CPU 301 reads out the registration program 307a, the determination program 307b, and the screen information generation program 307c and deploys them in the RAM 306.

The registration program 307a functions as the registration process 306a. The determination program 307b functions as the determination process 306b. The screen information generation program 307c functions as the screen information generation process 306c.

The process of the registration process 306a corresponds to the process of the registration unit 150a. The process of the determination process 306b corresponds to the process of the determination unit 150b. The process of the screen information generation process 306c corresponds to the process of the screen information generation unit 150c.

It should be noted that the programs 307a to 307c do not necessarily have to be stored in the hard disk device 307 from the beginning. For example, each program is stored in a "portable physical medium" such as a flexible disk (FD), a CD-ROM, a DVD disk, a magneto-optical disk, or an IC card inserted into the computer 300. Then, the computer 300 may read and execute each of the programs 307a to 307c.

100 Maintenance target device 101 Communication unit 102 Input unit 103 Display unit 104 Timer 105 Impact sensor 110 Recording control unit 115 Sensor information storage unit 140 Storage unit 140a I / O log table 140b G sensor recording table 150 Control unit 150a Registration unit 150b Judgment unit 150c screen information generator

Claims (8)

A registration unit that acquires information on whether or not a predetermined error has occurred in the maintenance target device and registers the number of error occurrences in the table for each predetermined period.
When the output value of the sensor that detects the impact on the maintenance target device exceeds the threshold value, an error before the reference time is made based on the reference time when the output value of the sensor exceeds the threshold value and the table. The frequency of occurrence of the error after the reference time is specified, and the frequency of occurrence of the error before the reference time is based on the frequency of occurrence of the error after the reference time. An information processing device characterized by having a determination unit for determining whether or not a failure has occurred. Claim 1 is characterized in that the determination unit determines that a failure due to the impact has occurred when the frequency of occurrence of errors after the reference time is higher than the frequency of occurrence of errors before the reference time. The information processing device described in. The information processing device according to claim 1 or 2, wherein the registration unit registers the output value in the table when the output value becomes equal to or higher than a threshold value. When the frequency of occurrence of the error registered in the table is equal to or higher than the reference frequency, the determination unit determines that a failure has occurred in the maintenance target device, and the determination unit causes a failure in the maintenance target device. The first, second, or third aspect of claim 1, 2 or 3, further comprising a screen information generation unit that generates screen information based on the information in the table and displays the generated screen information when it is determined that the information has been processed. The information processing device described. When the determination unit determines that a failure has occurred in the maintenance target device, the determination unit refers to the table, and when the output value is not registered in the table, the failure is a failure not caused by the impact. The information processing apparatus according to claim 4, wherein the information processing apparatus is determined to be. When the determination unit determines that a failure has occurred in the maintenance target device, the determination unit refers to the table, the output value is registered in the table, and from the reference time to the time when the failure occurs. The information processing apparatus according to claim 4 or 5, wherein it is determined whether or not a failure due to the impact has occurred based on the length of the period of. The computer
Acquires information on whether or not a predetermined error has occurred in the maintenance target device, and registers the number of error occurrences in the table for each predetermined period.
When the output value of the sensor that detects the impact on the maintenance target device exceeds the threshold value, an error before the reference time is made based on the reference time when the output value of the sensor exceeds the threshold value and the table. The frequency of occurrence of the error after the reference time is specified, and the frequency of occurrence of the error before the reference time is based on the frequency of occurrence of the error after the reference time. A determination method characterized by executing a process for determining whether or not a failure has occurred. On the computer
Acquires information on whether or not a predetermined error has occurred in the maintenance target device, and registers the number of error occurrences in the table for each predetermined period.
When the output value of the sensor that detects the impact on the maintenance target device exceeds the threshold value, an error before the reference time is made based on the reference time when the output value of the sensor exceeds the threshold value and the table. The frequency of occurrence of the error after the reference time is specified, and the frequency of occurrence of the error before the reference time is based on the frequency of occurrence of the error after the reference time. A determination program characterized by executing a process for determining whether or not a failure has occurred.

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