JP6153477B2 - Parts management system - Google Patents

Description

  The present invention relates to a component management system including a tag reader and a server.

In an apparatus in which a large number of parts are integrated, in order to avoid excessive replacement while preventing replacement of parts, it is possible to manage the next part replacement time by attaching an IC tag that records information about the part to the part. Widely done. For example, Patent Document 1 discloses a system that automatically determines the necessity of component replacement and maintenance from the maintenance cycle information and the date of manufacture of a component recorded in an IC tag.
However, for parts such as construction machines that are used in an environment where the load is not uniform, not only the time of use but also the specific usage mode of the part, such as the magnitude of the load, is not considered next time. The parts replacement time cannot be calculated accurately. Therefore, in recent years, information on specific usage modes of construction machines is periodically collected in a server, and the replacement time of parts of the construction machine is calculated on the server.

JP 2009-053934 A

  However, in order to calculate the replacement time of a specific part, for example, at the work site of the construction machine to be maintained by the service person, it is necessary to perform a complicated process of specifying the part and then inputting the information to the server. In other words, it is not possible to easily obtain the time for replacing parts of a construction machine on the go where information input operations are difficult.

(1) The invention of claim 1 is applied to a component management system including a server and a tag reader. The tag reader transmits an IC tag information to the server via the tag reader communication unit when the IC tag read unit reads the IC tag. A tag reader control unit. The information on the IC tag includes at least the previous replacement date and time of the part to which the IC tag is attached. The server receives a server communication unit that communicates with the tag reader, a component information storage unit that stores component information including the load status of the component, and an IC tag from the component information storage unit when receiving information on the IC tag from the tag reader. searching information of the parts were, and the server control unit to be transmitted to the tag reader via the server communication unit calculates the predetermined notification information based on the search result, the last to be included in the information of the IC tag received from data Gurida A first part replacement time calculation unit that calculates the next part replacement time with reference to the load status of the parts after the replacement date and parts related to the parts specified by the information of the IC tag received from the tag reader (hereinafter, And a related part search unit for searching for related parts) . The server control unit transmits the next component replacement time calculated by the first component replacement time calculation unit to the tag reader as notification information . In addition, when the server control unit receives the IC tag information from the tag reader, the next component replacement time calculated by the first component replacement time calculation unit is within a predetermined period from the time when the IC tag information is received, and the related component search When it is determined that there is a related part searched by the unit, information on the related part is transmitted as notification information.
(2) The parts management system according to the invention of claim 2 is configured as follows. That is, in the component management system according to claim 1 , when the server control unit receives the IC tag information from the tag reader, the next component replacement time calculated by the first component replacement time calculation unit is the time when the IC tag information is received. When it is determined that there is a related part that has been searched for by the related part search unit, notification information that prompts inspection or replacement of the related part is transmitted to the tag reader.

  According to the component management system of the present invention, by simply holding the tag reader over the target component, various information recorded in the IC tag is read to identify the component, and specific usage mode information of the component stored in the server It is possible to easily obtain various information calculated using the above, for example, parts replacement time.

System configuration in the first embodiment Example of mounting part number correspondence table Example of parts database Example of operation record Example of related parts list Example of used parts correspondence table The flowchart showing the operation of the server in the first embodiment The flowchart showing the operation of the server in the second embodiment Flowchart showing the operation of the tag reader in the third embodiment Information input interface displayed on the tag reader in the third embodiment The flowchart showing the operation of the server in the third embodiment

(First embodiment)
Hereinafter, a first embodiment in which a parts management system according to the present invention is applied to a construction machine will be described with reference to FIGS.
FIG. 1 shows a configuration in the first embodiment.
A parts management system 1 according to the present invention includes a tag reader 10 and a server 20 and is used for a construction machine 30. There may be a plurality of construction machines 30. Further, the tag reader 10 and the server 20, and the server 20 and the construction machine 30 can communicate with each other via a communication satellite. The tag reader 10 is used by a service person who inspects the construction machine 30 and replaces parts.

  The tag reader 10 includes a tag reader control unit 11, a read / write unit 12, an input unit 13, a display unit 14, a storage unit 15, a tag reader communication unit 16, and a notification unit 17.

  The tag reader control unit 11 includes a CPU, a RAM, and a ROM (not shown). The tag reader control unit 11 develops a later-described program stored in the ROM and executes the program. Further, the tag reader control unit 11 is connected to other components by a bus, and not only can exchange data with them, but also can relay data exchange between components. For example, information of the IC tag 34 read by the read / write unit 12 is transmitted to the server 20 via the tag reader communication unit 16, and data received by the tag reader communication unit 16 from the server 20 is displayed on the display unit 14.

  The read / write unit 12 includes an antenna (not shown) and can communicate with an IC tag 34 within a predetermined distance attached to a component provided in the construction machine 30. The read / write unit 12 can write not only the information read from the IC tag 34 but also the information input from the tag reader control unit 11 to the IC tag 34. The information stored in the IC tag 34 is the same as one record in the component database 24 of the server 20 described later. For example, the component attachment date and time and the final inspection date and time are written from the tag reader 10 to the IC tag 34.

The input unit 13 includes a touch panel and buttons (not shown), and can transmit the serviceman's input to the tag reader control unit 11. The display unit 14 includes a liquid crystal display (not shown), and displays information read by the read / write unit 12 transmitted via the tag reader control unit 11 and information received by the tag reader communication unit 16.
The storage unit 15 is configured by a flash memory (not shown), and an attachment part number correspondence table 18 described later is stored in the storage unit 15.

  The attachment part number correspondence table 18 shows the correspondence between the attachment part number and the attachment part name for each model of the construction machine as shown in FIG. As will be described later, since the first five digits of the construction machine ID, which is an identifier unique to all the construction machines 30, represents the model, the attachment part number correspondence table 18 includes the first five digits of the construction machine ID, the attachment part number, and Consists of attachment site names. In addition, since this table is intended to identify a part, even if the same part is used, a different part code is attached if the mounting location is different. For example, in the model in which the first five digits of the construction machine ID are C0101, since there are boom cylinders on the left and right sides of the main body, the left part code 0101 and the right part code 0201 are distinguished.

  The tag reader communication unit 16 communicates information related to the IC tag 34 with the server 20, and transmits the date and time information and information specifying the component to the server 20 when writing the component attachment date and time and the final inspection date and time on the IC tag 34. . The notification unit 17 includes a speaker (not shown), and notifies the serviceman of the occurrence of various events by issuing an alarm from the speaker.

  The server 20 includes a server control unit 21, a component information storage unit 22, and a server communication unit 23. The server control unit 21 includes a CPU, a RAM, and a ROM (not shown), and develops and executes a later-described program stored in the ROM on the RAM. The server control unit 21 is connected to other components via a bus, and not only can exchange data with them, but can also relay data exchange between components.

The component information storage unit 22 stores a component database 24, an operation record 25, a related component list 26, and a used component correspondence table 27.
As shown in FIG. 3, the parts database 24 records information about parts used in the construction machine 30. The index is a unique value for identifying a record in the parts database 24, and a different value is automatically assigned to all the records. The component ID is an identifier unique to all components consisting of 10 digits, and the upper 5 digits indicate the model number of the component, and the lower 5 digits indicate the serial number for each model number. The construction machine ID is an identifier unique to all construction machines consisting of 10 digits. The first 5 digits indicate the model of the construction machine, and the lower 5 digits indicate the serial number for each model. In addition, the mounting part number indicates the mounting position described with reference to FIG. 2, the part mounting date and time indicates the date and time when the part was mounted, and the final inspection date and time indicates the date and time of the last inspection with the part attached to the construction machine. Indicates. That is, immediately after the parts are mounted, the final inspection date is blank, and the date is written for the first time after the next inspection.

  Since all the parts are used in advance, i.e., where in which construction machine 30 they are attached, the part ID, construction machine ID, and attachment part number are recorded in the parts database 24 of the server 20 in advance. However, the parts attachment date and time and the final inspection date and time are transmitted from the tag reader 10 to the server 20 and recorded in the parts database 24 at the time of assembly, replacement and inspection.

  The operation record 25 is obtained by accumulating data collected by an operation information collection unit 33 (to be described later) of the construction machine 30 and transmitted to the server 20 via the construction machine communication unit 32. As shown in FIG. The operating time and the load size of each operation of the machine 30 per day are recorded. Since the parts used by each operation can be specified by the used parts correspondence table 27 described later, by referring to the standard replacement time and the part installation date / time recorded in the parts database 24, the next time as described later The part replacement time can be calculated.

  The related parts list 26 is a list showing a group of parts (hereinafter referred to as related parts) related to the cause of the trouble for each model, for example, as shown in FIG. For example, if there is a problem with any of the five hydraulic oil filters, tanks, hydraulic pumps, pistons, and control valves belonging to the same group, it indicates that there is a high possibility that the other four are also defective.

  The used part correspondence table 27 is a table showing the correspondence between the operation of the construction machine 30 described in the operation record 25 and the attachment part number of the part that generates a load due to the operation, for example, as shown in FIG. It ’s like that. For example, if the model, that is, the first five digits of the construction machine ID is C0101, it indicates that a load is generated on the four parts of the attachment site numbers 0001, 0002, 0101, and 0201 by excavation. Note that “N / A” in the table indicates that there is no component that causes a load because the operation is impossible.

  The server communication unit 23 includes a satellite communication unit (not shown) and can communicate with the tag reader 10 and the construction machine 30 via a communication satellite. The server communication unit 23 periodically receives the operation information from the construction machine 30, and these are recorded in the operation record 25. Further, the component information storage unit 22 is searched based on the data received from the tag reader 10, and the result of processing described later is transmitted to the tag reader 10.

  The construction machine 30 operates an engine (not shown), a hydraulic pump driven by the engine, various hydraulic actuators driven by oil discharged from the hydraulic pump, a controller that electronically controls the engine and the hydraulic pump, a hydraulic actuator, and the like. It is equipped with an operating device. The controller includes a construction machine control unit 31, a construction machine communication unit 32, and an operation information collection unit 33. In addition, an IC tag 34 is provided on a component of the construction machine 30 such as an engine or a hydraulic pump. It is assumed that the construction machine ID is recognized in advance by the service person.

  The construction machine control unit 31 includes a CPU, a RAM, and a ROM (not shown), and develops and executes a later-described program stored in the ROM on the RAM. The construction machine control unit 31 is connected to the construction machine communication unit 32 and the operation information collection unit 33 via a bus, and can relay data exchange from the operation information collection unit 33 to the construction machine communication unit 32. The IC tag 34 is a consumable item and is affixed to each part to be replaced. Each IC tag 34 stores data similar to one record in the part database 24 shown in FIG.

  The construction machine communication unit 32 includes a satellite communication unit (not shown) and can communicate with the server 20 regardless of the position of the construction machine 30. The operation information collecting unit 33 collects outputs of a pressure control unit, a hydraulic pump, and various sensors (not shown) in synchronization, and the collected data is periodically (for example, once a day). Is transmitted to the server 20 via. This data is stored as an operation record 25 in the server 20.

Next, the operation in the first embodiment will be described.
When the read / write unit 12 reads the IC tag 34, the tag reader control unit 11 transmits information stored in the IC tag 34 to the server 20 via the tag reader communication unit 16. When receiving data from the server 20, the tag reader control unit 11 outputs and displays the data on the display unit 14, transmits an alarm sound from the speaker of the notification unit 17, and indicates the presence of the data received from the server 20. 10 is notified to the service person who is using 10.

  Processing executed by the server control unit 21 will be described with reference to FIG. The server control unit 21 executes the program shown in the flowchart of FIG. 7 at regular time intervals (for example, every minute). Unless otherwise specified in the following description, the execution subject of each step is the CPU of the server control unit 21.

  In step S210, the server control unit 21 determines whether the server communication unit 23 has received data read from the IC tag 34 by the tag reader 10. If data has been received, the process proceeds to step S220. If data has not been received, the flowchart of FIG. 7 ends.

In step S220, the server control unit 21 identifies the construction machine ID and the part attachment date / time from the received data, and all the operation result records 25 having the same construction machine ID after the part attachment date / time from the operation result record 25. Extract and proceed to step S230.
In step S <b> 230, the server control unit 21 specifies an attachment part code included in the received data, and specifies an operation in which the part is used from the used part correspondence table 27. Then, the time including the previous work is accumulated from the extracted operation record 25, and the accumulated operation time of the part to date is calculated. However, if the average load or the maximum load recorded in the operation record 25 exceeds the preset high load reference value, it is determined that a lot of high load work has been performed, and the recorded operation You may accumulate the time which multiplied the coefficient exceeding 1 to time. If the average load or the maximum load recorded in the operation record 25 is less than a preset low load reference value, it is determined that a lot of low load work has been performed, and the recorded operation time is reached. Times multiplied by a coefficient less than 1 may be accumulated.

  In subsequent step S240, the server control unit 21 determines whether or not the cumulative operating time calculated in step S230 exceeds the standard replacement time of the part recorded in advance in the parts database 24. Proceeds to step S270, and if not exceeded, proceeds to step S250.

  In step S250, the server control unit 21 calculates the average operation time of the part per day from the cumulative operation time of the part from the part attachment date and time to the present, and the time when the standard replacement time of the part is reached, that is, The next part replacement time for the part is calculated. However, recent operating hours per day may be emphasized by weighting. Hereinafter, the calculation of the next part replacement time executed in accordance with the procedures of steps S220, S230, and S250 is hereinafter referred to as a part replacement time calculation process for a regular part. In the subsequent step S260, the next component replacement time calculated in step S250 is transmitted to the tag reader 10 via the server communication unit 23, and the flowchart of FIG. 7 ends.

  In step S270, the server control unit 21 searches whether the component specified from the received data exists in the related component list 26, and if it exists, records the name of another component belonging to the same group. The process proceeds to S280, and if it does not exist, the process proceeds to Step S290. For example, if the first five digits of the construction machine ID is C0101, and the part specified from the received data is an engine filter, the gasket, engine piston, cylinder head and cylinder block belonging to the same group of list number 2 Record.

  In step S280, the server control unit 21 transmits the following notification and component list to the tag reader 10 via the server communication unit 23, and ends the flowchart of FIG. The notification is: “The part read by the tag reader has passed the next part replacement time, so the part should be replaced. In addition, the following related parts should be inspected and replaced if necessary. It should be a notification. The component list is a list of components that belong to the same group as the component in the related component list 26 recorded in step S270.

In step S290, the server control unit 21 notifies the server communication unit 23 that the component read by the tag reader has passed the next component replacement time and should be replaced. Is transmitted to the tag reader 10, and the flowchart of FIG.
In step S280 and step S290, the excess time calculated in step S240 may be notified together.

According to 1st Embodiment described above, there exists the following effect.
(1) The component management system 1 according to the first embodiment includes a tag reader 10 and a server 20. The tag reader 10 reads the IC tag 34 attached to the component, the tag reader communication unit 16 that communicates with the server 20, and the read / write unit 12 reads the IC tag 34 via the tag reader communication unit 16. And a tag reader control unit 11 that transmits information of the IC tag 34 to the server 20. The server 20 receives the information on the IC tag 34 from the tag reader 10, the server communication unit 23 that communicates with the tag reader 10, the component database 24 that is the component information storage unit 22 that stores the component information, and the operation record 25. Information on the part to which the IC tag 34 is attached is searched from the database 24 and the operation record 25, and the next part replacement time of the part to which the IC tag 34 is attached is calculated based on the search result (see FIG. 7 in step S250), and transmits it to the tag reader 10 via the server communication unit 23.

  Therefore, only by reading the IC tag 34 into the target component by the tag reader 10, various information recorded in the IC tag 34 is read to identify the component, and specific usage mode information of the component stored in the server 20. In the first embodiment, various parts of information calculated using, the parts replacement time can be easily obtained.

(2) The information of the IC tag 34 includes at least the previous replacement date and time of the part to which the IC tag 34 is attached, and the server 20 is included in the information of the IC tag 34 received from the tag reader 10 in step S250 of FIG. Next, the next part replacement time is calculated with reference to the operation record 25 after the part attachment date and time. That is, the server 20 executes a part replacement time calculation process based on the operation results in step S250 of FIG. Then, the server control unit 21 transmits the next component replacement time calculated by the component replacement time calculation process based on the operation results to the tag reader 10 as notification information.

  Therefore, the component management system 1 according to the first embodiment has an advantage that the next component replacement time of the component can be calculated in consideration of the load information of the construction machine 30 that the server 20 has. When the user of the tag reader 10, that is, a serviceman reads the IC tag 34 using the tag reader 10, the notification information calculated by the server 20, that is, the next part replacement time of the part to which the IC tag 34 is attached is displayed on the display unit 14, the service person can immediately check if necessary.

(3) The server 20 searches for a component related to the component specified by the information of the IC tag 34 received from the tag reader 10 in step S270 of FIG. That is, the server 20 executes related part search processing in step S270 of FIG. When the server control unit 21 receives the information of the IC tag 34 from the tag reader 10, the next component replacement time calculated based on the component attachment date and time of the component specified by the received IC tag 34 information is the information of the IC tag 34. When it is determined that there is a related part that has not been received and that has been searched by the related part search process, notification information that prompts inspection or replacement of the related part is transmitted to the tag reader 10.

  Therefore, if the replacement of the part to which the IC tag 34 read by the tag reader 10 is delayed from the time when it should be replaced, the service person urges the inspection or replacement of the part that may be affected. Broadcast information can be obtained immediately.

  In the embodiments and modifications described later, the component attachment date and time and the final inspection date and time of each component may be stored in the component database 24 of the server 20, but in the first embodiment, the server It is not necessary to store the part attachment date and time and the final inspection date and time of each part in the 20 parts database 24.

(Modification 1)
In the first embodiment, the server control unit 21 determines in step S240 in FIG. 7 whether or not the next part replacement time has passed, but receives information on the IC tag 34 within a predetermined period, for example. It may be determined whether or not the next part replacement time will be reached within one month from the beginning. In this case, the notification transmitted in step S290 may prompt the arrangement of replacement parts and the creation of a maintenance schedule for parts replacement because the next part replacement time is near. In addition to the notification in step S290, the notification transmitted in step S280 is a notification that there is a possibility that there is a problem with related parts, and that it is better to check.

According to the modification 1 demonstrated above, there exist the following effects.
When the server control unit 21 receives the information of the IC tag 34 from the tag reader 10, the next component replacement time calculated based on the component attachment date and time of the component specified by the received IC tag 34 information is the information of the IC tag 34. When it is determined that there is a related part within a predetermined period from the time of reception and searched by the related part search process, information on the related part is transmitted as notification information.

  According to the first modification, since the arrangement of replacement parts and creation of a replacement schedule are urged before the next part replacement time for the part is exceeded, it is possible to prevent the next part replacement time from being exceeded. In addition, since the parts related to the cause of the failure are notified at the same time, the service person can check the parts together to increase the efficiency of the inspection.

(Modification 2)
In the server 20 of the first embodiment, the server 20 calculates the component replacement time using the information in the component database 24 and the operation record 25 of the component information storage unit 22 and transmits the calculation result to the tag reader 10. To do. The parts management system of the present invention is not limited to this. For example, based on the component ID and model ID transmitted from the tag reader 10, component information not recorded in the information of the IC tag 34, that is, component information that can be calculated only by the server 20 is calculated and transmitted to the tag reader 10. You may do it,

(Modification 3)
Although the tag reader 10 includes the tag reader communication unit 16 in the first embodiment, the configuration of the tag reader 10 is not limited to this. The tag reader 10 does not include a communication unit, but instead includes a communication interface such as a serial port or a USB terminal, and may communicate by connecting a device having a communication function such as a mobile phone or a modem.
According to the third modification, the manufacturing cost of the tag reader 10 can be reduced, and an optimal communication device can be selected and connected according to the situation. For example, in an environment where wireless LAN access points are installed in the surrounding area, communication is performed by connecting to a wireless LAN communication device, and in an environment where there is no infrastructure such as a desert, communication is performed by connecting to a satellite mobile phone that can directly communicate with a communication satellite. Do.

(Second Embodiment)
Hereinafter, a second embodiment in which the parts management system according to the present invention is applied to a construction machine will be described with reference to FIG.
The main difference in the configuration between the second embodiment and the first embodiment is that the programs stored in the ROM of the server control unit 21 are different.

The operation of the second embodiment will be described below.
The operation of the tag reader controller 11 is the same as that of the first embodiment.
The program shown in the flowchart of FIG. 8 shows a processing procedure executed by the server control unit 21 in the second embodiment, instead of the program shown in the flowchart of FIG. 7 in the first embodiment.

  In step S <b> 310, the server control unit 21 determines whether the server communication unit 23 has received data read from the IC tag 34 by the tag reader 10. If data has been received, the process proceeds to step S320, and if data has not been received, the flowchart of FIG. 8 ends.

  In step S320, the server control unit 21 searches the related component list 26 for a component specified from the received data, and if it exists, records the name of another component belonging to the same group, and proceeds to step S330.

  In step S330, the processing target is changed to include the component recorded in step S320 in addition to the component in the subsequent processing (steps S340 to 370). In step S340, the server control unit 21 specifies the model, machine number, and part attachment date / time from the received data, and creates an operation record 25 that matches the model and machine number after the part attachment date / time from the operation record 25. Extract and proceed to step S350.

  In step S <b> 350, the server control unit 21 identifies the attachment part code included in the received data, and identifies the work in which the processing target component is used from the used component correspondence table 27. Then, from the extracted operation record 25, the time including the work in which the processing target component is used is accumulated to calculate the cumulative operating time of the processing target component up to the present, and the process proceeds to step S360. However, if the average load or the maximum load recorded in the operation record 25 exceeds the preset high load reference value, it is determined that a lot of high load work has been performed, and the recorded operation You may accumulate the time which multiplied the coefficient exceeding 1 to time. If the average load or the maximum load recorded in the operation record 25 is less than a preset low load reference value, it is determined that a lot of low load work has been performed, and the recorded operation time is reached. Times multiplied by a coefficient less than 1 may be accumulated.

  In step S360, the server control unit 21 calculates the average operation time of the part per day based on the cumulative operation time of the part from the part attachment date and time to the present, and reaches the standard replacement time of the part. That is, the next part replacement time of the part is calculated. However, recent operating hours per day may be emphasized by weighting. If the accumulated operating time calculated in step S350 exceeds the standard replacement time for the component to be processed, the next component replacement time is set to “urgent due to overtime”. In subsequent step S370, the server control unit 21 transmits the calculated next part replacement timing of all the parts to the tag reader 10, and the flowchart of FIG.

According to 2nd Embodiment described above, there exists the following effect.
A component management system 1 according to the second embodiment includes a tag reader 10 and a server 20. The information of the IC tag 34 includes at least the component attachment date and time of the component attached with the IC tag, and the accumulated information in the component information storage unit 22 includes the load status of the component attached with the IC tag 34 and the component attachment. Includes date and time. That is, the information is stored in the component database 24 and the operation record 25. The server control unit 21 executes step S360 in FIG. 8 and calculates the next component replacement time with reference to the component load status after the component attachment date and time. This is the attachment date reference replacement date calculation process. The server control unit 21 also executes step S320 of FIG. 8 to search for a component related to the component specified by the information of the IC tag 34 received from the tag reader 10. This is a related part search process. When the server control unit 21 determines that there is a related part searched by the related part search process for the part specified by the information received from the tag reader 10, the next time the related part calculated by the attachment date reference replacement date calculation process is determined. The part replacement time is transmitted to the tag reader 10 as notification information.

  Therefore, when the service person reads the IC tag 34 attached to the part with the tag reader 10, the next time considering the operation information of the construction machine 30 to which these parts are attached for all the parts related to the parts. Know when to replace parts. In this way, since the service person can obtain the next part replacement time for all the related parts without giving special instructions, it can easily know all the parts to be replaced. Maintenance work is easy.

(Third embodiment)
Hereinafter, a third embodiment in which the component management system according to the present invention is applied to a construction machine will be described with reference to FIGS. The third embodiment is characterized in that information on the IC tag 34 to be read in advance is input to the tag reader and that countermeasures against irregular parts are taken.

  The main difference in the configuration between the third embodiment and the first embodiment is that the programs stored in the ROM of the tag reader control unit 11 and the ROM of the server control unit 21 are different.

The operation of the tag reader 10 in the third embodiment will be described below.
The read / write unit 12 reads the IC tag 34 in response to a read command from the tag reader control unit 11 and transmits the read information to the tag reader control unit 11. Is transmitted to the tag reader controller 11.

  In the first embodiment, the tag reader control unit 11 of the tag reader 10 starts the operation in response to the reading completion of the IC tag 34 by the read / write unit 12 and the data reception of the tag reader communication unit 16, but the third embodiment In addition to these, the execution of the program shown in the flowchart of FIG. 9 is started by the operation of the service person.

Details of the program shown in the flowchart of FIG. 9 will be described below.
When the program is started by the serviceman's operation, in step S401, the tag reader control unit 11 displays the information input interface 14a shown in FIG. 10 on the display unit 14 and prompts the serviceman to input the construction machine ID. In subsequent step S402, the tag reader control unit 11 waits for the input of the construction machine ID by the service person, and proceeds to step S403.

In step S403, the tag reader control unit 11 searches the attachment part number correspondence table 18 for a column in which the first five digits of the construction machine ID entered by the serviceman match, and displays a list of attachment part names displayed in the column. The information is added to the information input interface 14a as the attachment site name list 14c. For example, the attachment site name list 14c is a drop-down list and has a structure in which any attachment site included in the list can be selected.
In subsequent step S404, the tag reader control unit 11 waits for selection from the attachment site name list 14c by the service person, and when there is a selection, the process proceeds to step S405.

  In step S405, the tag reader controller 11 first refers to the attachment part number correspondence table 18 and the construction machine ID input by the service person in step S402 for the attachment part selected by the serviceman in step S404, and the attachment part number. Is identified. Next, the data consisting of the construction machine ID input by the serviceman in step S402 and the specified attachment part number is temporarily stored as verification data.

  In subsequent step S406, the tag reader control unit 11 waits for a tag reading instruction from the service person. If there is a reading instruction, the tag reader control unit 11 sends a reading instruction to the read / write unit 12, and proceeds to step S407. The tag reading instruction from the service person is, for example, pressing of a tag data reading button (not shown) by the service person.

  In step S407, the tag reader control unit 11 determines whether the information from the read / write unit 12 is information on the read IC tag 34 or information indicating that reading has failed. If the information from the read / write unit 12 is information on the IC tag 34, the process proceeds to step S408, and if the information is that the reading cannot be performed, the process proceeds to step S409.

  In step S408, the tag reader control unit 11 determines whether the information of the component attachment date / time is included in the read information of the IC tag 34. If included, the process proceeds to step S410. If not included, the process proceeds to step S409.

  In step S409, the construction machine ID input by the service person in step S402, the attachment part number specified in step S405, and a special code indicating that there was an irregular product are sent to the server 20 as irregular product information. Then, the flowchart of FIG. 9 ends.

  In step S410, the tag reader control unit 11 determines whether the model code and the attachment part number of the read IC tag 34 match the collation data created in step S405. If both match, the process proceeds to step S412. If it does not match, the process proceeds to step S411.

  In step S411, the tag reader control unit 11 outputs a display indicating that the portion input to the display unit 14 and the information of the read IC tag 34 do not match, and emits an alarm sound from the speaker of the notification unit 17 and does not match. This is notified to the service person. Then, the process returns to step S406 in preparation for reading the IC tag 34 again.

  In step S412, the tag reader control unit 11 transmits information of the read IC tag 34 to the server 20 via the tag reader communication unit 16, and the process proceeds to step S413. In step S413, the tag reader control unit 11 performs writing for updating the date of the last inspection date and time to the current time on the IC tag 34 that has read the information in steps S406 to S407, and ends the flowchart of FIG.

Hereinafter, the operation of the server 20 in the third embodiment will be described.
The program shown in the flowchart of FIG. 11 is executed at regular intervals, for example, every minute by the server control unit 21 in the third embodiment, instead of the program shown in the flowchart of FIG. 7 in the first embodiment. The In the following description, the same components as those in FIG. 7 in the first embodiment are denoted by the same reference numerals, and different points will be mainly described. Points that are not particularly described are the same as those in the first embodiment. This embodiment is different from the first embodiment in that a countermeasure is added mainly when information received by the server 20 is irregular product information.

  In step S501, the server control unit 21 determines whether information on the IC tag 34 or irregular product information has been received from the tag reader communication unit 16. If any of the data has been received, the process proceeds to step S502, and if not, the flowchart shown in FIG. 11 ends.

  In step S502, the server control unit 21 determines whether the received data is information on the IC tag 34. If the received data is information on the IC tag 34, the process proceeds to step S503. If it is genuine product information, the process proceeds to step S504. Since the irregular product information includes a special code indicating that there is an irregular product, if the received data does not include this special code, the received data is information of the IC tag 34. It can be judged.

  In step S503, the server control unit 21 updates the inspection date of the part in the part database 24 to the current time for the part specified from the received information of the IC tag 34, and proceeds to step S220. In step S220 and subsequent steps, the next part replacement time of the part to which the received IC tag 34 is attached is calculated and transmitted, or the fact that the next part replacement time is exceeded is transmitted and the flowchart of FIG. 11 is terminated. To do.

  In step S504, the server control unit 21 uses the construction machine ID and the attachment part number included in the irregular product information to confirm that the regular database that has been installed immediately before the location where the irregular product was installed from the parts database 24. A part (hereinafter referred to as the last regular part) is searched. For example, first, the parts database 24 is searched for a part having a construction machine ID and an attachment part number that match the construction machine ID and the attachment part number included in the irregular product information. When a plurality of parts are applicable, the one with the latest part attachment date / time is the last regular part, and when only one part is applicable, that part is the last regular part.

In subsequent step S505, the server control unit 21 determines whether or not the last regular part is found in step S504. If it is found, the process proceeds to step S506, and if not found, the process proceeds to step S507.
In step S506, the server control unit 21 determines whether or not the last inspection date and time of the last regular part is recorded in the parts database 24. If it is recorded, the process proceeds to step S508, and if not, step S509 is performed. Proceed to

  In step S507, since there is no clue to know the date and time when the irregular product was attached, the server control unit 21 performs the irregular product according to the following procedure (hereinafter referred to as an irregular product part replacement time calculation process based on reception). The next part replacement time is calculated, and the process proceeds to step S510.

  First, the construction machine ID of the construction machine 30 to which the unauthorized product is attached is extracted from the unauthorized product information, and all the operation record 25 for the past certain period of the construction machine having the construction machine ID is extracted. For example, this period can be the past year. The attachment part number of the unauthorized product is identified from the unauthorized product information, and the work in which the component is used is identified from the used component correspondence table 27. From the extracted operation record 25, the time in which the specified work is included is accumulated, and the accumulated operation time of the part up to the present is calculated. By dividing the accumulated time by the number of days from which the operation record 25 is extracted, the average operation time of the part per day is calculated. The number of days that can be used is calculated by dividing the standard replacement time of the part by its average operating time. The number of days calculated is added to the date when the irregular product data is received to calculate the next part replacement time for the irregular product. However, the standard replacement time of the irregular product is shorter than the last regular component, for example, one third of the regular component.

  In step S508, since the last regular part has been replaced with an irregular product after the final inspection date and time, the server control unit 21 uses the final inspection date and time as a reference for the following procedure (hereinafter referred to as the inspection standard irregular product). The next part replacement time of the irregular product is calculated by a part replacement time calculation process), and the process proceeds to step S510.

  First, the construction machine ID of the construction machine to which the unauthorized product is attached is extracted from the unauthorized product information, and the operation record of the construction machine 30 having the construction machine ID after the last inspection date and time of the last authorized part is recorded. Extract all 25. Next, the attachment part number of the unauthorized product is identified from the unauthorized product information, and the work in which the component is used is identified from the used component correspondence table 27. From the extracted operation record 25, the time in which the specified work is included is accumulated, and the accumulated operation time of the part up to the present is calculated. By dividing the accumulated time by the number of days from which the operation record 25 is extracted, the average operation time of the part per day is calculated. The number of days that can be used is calculated by dividing the standard replacement time of the part by its average operating time. Add the calculated number of days to the final inspection date to calculate the next part replacement time for the irregular product. However, the standard replacement time of the irregular product is shorter than the last regular component, for example, one third of the regular component.

  In step S509, since the last regular part has been replaced with an unauthorized product after the date and time when the part is attached, the server control unit 21 performs the following procedure (hereinafter referred to as an irregular product with a reference at the time of replacement) based on the date and time of the attached part. The next part replacement time of the irregular product is calculated by a part replacement time calculation process), and the process proceeds to step S510.

  First, the construction machine ID of the construction machine 30 to which the unauthorized product is attached is extracted from the unauthorized product information, and the part attachment date and time of the last authorized part from the operation record 25 of the construction machine having the construction machine ID. All subsequent operation results are extracted. Next, the attachment part number of the unauthorized product is identified from the unauthorized product information, and the work in which the component is used is identified from the used component correspondence table 27. From the extracted operation record 25, the time including the previous work is accumulated, and the accumulated operation time of the part up to the present is calculated. By dividing the accumulated time by the number of days from which the operation record 25 is extracted, the average operation time of the part per day is calculated. The number of days that can be used is calculated by dividing the standard replacement time of the part by its average operating time. Add the calculated number of days to the part installation date and time to calculate the next part replacement time for the irregular product. However, the standard replacement time of the irregular product is shorter than the last regular component, for example, one third of the regular component.

  In step S <b> 510, the server control unit 21 transmits the calculated irregular part replacement time calculation reference date and the reason to the tag reader 10 via the server communication unit 23. The message to be transmitted is, for example, “Next component replacement time: early June 2014. Calculation reference date: today. Reason: Because there is no record of the last regular component”. The serviceman who sees this message calculates the next part replacement time for an irregular product based on today's standards, and therefore can determine that it should be replaced with a regular part sufficiently earlier than the next part replacement time. .

According to the third embodiment described above, the following operational effects are obtained.
(1) The tag reader 10 includes an input unit 13 for inputting information for specifying an installation location of a part to which the IC tag 34 is attached. Further, the tag reader control unit 11 specifies from the information input from the input unit 13 when the component attachment date / time cannot be read from the IC tag 34 attached to the component at the installation location specified from the information input from the input unit 13. The server 20 is notified that the installed part is an irregular product.

  For this reason, the tag reader 10 is provided with an irregular product without the IC tag 34, an irregular product with an IC tag 34 not provided with a storage area for component attachment date / time, or a storage area for the component attachment date / time. However, it is possible to notify the server 20 that the irregular product with the IC tag 34 to which the date is not written is installed at the installation location specified by the information input from the input unit 13. .

(2) The information of the IC tag 34 includes at least the component attachment date and time and the final inspection date and time of the component to which the IC tag 34 is attached, and the information stored in the component database 24 of the component information storage unit 22 is the component component Includes installation date and time and final inspection date. The server 20 calculates the next part replacement time of the irregular product with reference to the past load status of the component at the installation location of the irregular product received from the tag reader 10 in step S507 of FIG. This is an irregular part replacement time calculation process based on reception. In step S509 of FIG. 11, the server 20 also refers to the load information after the part attachment date and time of the last genuine part, that is, the part attached to the installation place of the unauthorized part received from the tag reader 10. Calculate the next part replacement time for the product. This is the irregular part replacement time calculation process based on the replacement standard. In step S508 of FIG. 11, the server 20 refers to the load information after the previous inspection date and time for the last regular part, and calculates the next part replacement time for the irregular part. This is an irregular part replacement time calculation process based on inspection standards. The tag reader 10 further includes an input unit 13 for inputting information for specifying the installation location of the component attached with the IC tag 34. The tag reader control unit 11 is specified from the information input by the input unit 13 when the previous replacement date cannot be read from the IC tag 34 attached to the component at the installation location specified from the information input by the input unit 13. The server 20 is notified that the installed part is an irregular product. When the server control unit 21 receives the irregular product information from the tag reader 10, any one of the irregular product parts is obtained from the information received from the tag reader 10 and the data stored in the component information storage unit 22, for example, the component database 24. The replacement time calculation process is selected, and the next part replacement time calculated by the selected calculation process is transmitted to the tag reader 10 as notification information.
Therefore, it can be calculated in consideration of the past use period in which the next part replacement time of the irregular product can be estimated from objective facts.

(3) In step S410 of FIG. 9, the tag reader 10 matches the installation location of both from the information specifying the installation location of the component input by the input unit 13 and the information of the component included in the read IC tag 34. It is determined whether or not. This is the installation location match determination process. The notification unit 17 notifies that they do not match when it is determined by the installation location match determination process that the installation locations of both do not match.

  For this reason, when the IC tag 34 attached to a part attached to a location other than the installation location previously input by the serviceman from the input unit 13 is read, the notification unit 17 notifies the serviceman, and the serviceman notices a mistake in reading the tag. Can do. Then, the IC tag 34 of the part attached to the installation location input from the input unit 13 can be read. This effect is due to the fact that parts are so dense that it is difficult to read a specific IC tag 34, or that only the left and right mounting positions differ as in the left and right boom cylinders shown in FIG. In particular, this is conspicuous when, for example, similar parts are arranged adjacent to each other.

(Modification 1)
In the third embodiment, the final inspection date / time is recorded in the parts database 24 and the IC tag 34, but a configuration may be adopted in which the final inspection date / time is not recorded therein. When the server 20 receives the information of the IC tag 34 from the tag reader 10, the server 20 calculates the next part replacement time for the part by the part replacement time calculation process for the regular part. In addition, when receiving the irregular product information, if the last regular component exists in the component database 24 and the component attachment date and time of the last regular component is recorded, the irregular standard component replacement at the time of installation is performed. The next part replacement time of the irregular product is calculated by the timing calculation process. In other cases, the next part replacement time of the irregular product is calculated by the irregular part replacement time calculation process based on the reception time.

  Therefore, in the first modification, the flowchart shown in FIG. 11 executed by the server control unit 21 is changed to a process in which step S509 is arranged instead of step S506 and the process proceeds to step S510 after execution of step S509.

According to the modification 1 demonstrated above, there exist the following effects.
The server 20 refers to the past load status of the part at the installation location of the unauthorized product received from the tag reader 10 and calculates the next part replacement time for the unauthorized product. That is, an irregular part replacement time calculation process based on reception is executed. In addition, the server 20 refers to the load information of the last regular part after the part attachment date and time of the last regular part, and calculates the next part replacement time for the unauthorized part. In other words, an irregular part replacement time calculation process based on the attachment time is executed. The server control unit 21 selects one of the part replacement time calculation processes based on the information received from the tag reader 10 and the data stored in the part database 24, and the next part replacement calculated by the selected part replacement time calculation process. The time is transmitted to the tag reader 10 as notification information. The server control unit 21 selects a part replacement time calculation process for a regular part when there is no special code indicating that there is an unauthorized part in the information received from the tag reader 10. When the server control unit 21 includes a special code indicating that there is an unauthorized product in the information received from the tag reader 10 and the component installation date and time of the last authorized component is stored in the component database 24. Selects the non-regular product part replacement time calculation process based on the attachment time, and otherwise selects the non-regular product part replacement time calculation process based on the reception time.
Therefore, even if the final inspection date / time is not stored in either the IC tag 34 or the parts database 24, the next part replacement time of the irregular product can be calculated.

(Modification 2)
In the third embodiment, the final inspection date and the component attachment date and time are recorded in the component database 24. However, a configuration may be adopted in which they are not recorded. Furthermore, the IC tag 34 may be configured to record only the component attachment date and time and not the last inspection date and time. When the server 20 receives the information of the IC tag 34 from the tag reader 10, the server 20 calculates the next part replacement time by the part replacement time calculation process of the regular part. The next part replacement time is calculated by the part replacement time calculation process.

  Therefore, in the second modification, the flowchart shown in FIG. 11 executed by the server control unit 21 is changed to a process in which step S509 is arranged instead of step S506 and the process proceeds to step S510 after execution of step S509.

According to the modification 2 demonstrated above, there exist the following effects.
The server 20 refers to the past load status of the part at the installation location of the unauthorized product received from the tag reader 10 and calculates the next part replacement time for the unauthorized product. That is, the irregular part replacement time calculation process based on the reception time is executed as in step S507 in FIG. When the information received from the tag reader 10 includes a special code indicating that there is an irregular product, the server control unit 21 calculates the next time calculated by the irregular component replacement timing calculation process based on reception. The part replacement time is transmitted to the tag reader 10 as notification information. When there is no special code indicating that there is an irregular product, the next part replacement time calculated by the part replacement time calculation process based on the attachment time is transmitted to the tag reader 10 as notification information.
Therefore, even if the final inspection date / time is not stored in either the IC tag 34 or the component database 24 and the component attachment date / time is not stored in the component database 24, the next component replacement time of the irregular product is calculated. be able to.

  Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other embodiments conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention. Moreover, you may combine each embodiment and modification which were mentioned above, respectively.

DESCRIPTION OF SYMBOLS 10 ... Tag reader, 11 ... Tag reader control part, 12 ... Read / write part, 13 ... Input part, 14 ... Display part, 15 ... Storage part, 16 ... Tag reader communication part, 17 ... Notification part, 18 ... Attachment part number correspondence table , 20 ... Server, 21 ... Server control unit, 22 ... Component information storage unit, 23 ... Server communication unit, 24 ... Component database, 25 ... Operation record, 26 ... Related component list, 27 ... Used component correspondence table, 30 ... Construction machine 31 ... Construction machine control unit 32 ... Construction machine communication unit 33 ... Operation information collection unit 34 ... IC tag

Claims (2)

In a parts management system comprising a server and a tag reader ,
The tag reader is
An IC tag lead portion for reading an IC tag attached to a component;
A tag reader communication unit that communicates with the server;
A tag reader control unit that transmits information of the IC tag to the server via the tag reader communication unit when the IC tag read unit reads the IC tag;
The information of the IC tag includes at least the previous replacement date and time of the part attached with the IC tag,
The server
A server communication unit that communicates with the tag reader;
A component information storage unit for storing information on the component including the load status of the component;
When the information on the IC tag is received from the tag reader, the information on the component with the IC tag is searched from the component information storage unit, and predetermined notification information is calculated based on the search result, via the server communication unit. A server control unit for transmitting to the tag reader;
A first part replacement time calculating unit that calculates a next part replacement time with reference to the load status of the part after the previous replacement date and time included in the IC tag information received from the tag reader;
A related part search unit for searching for a part related to the part specified by the information of the IC tag received from the tag reader (hereinafter referred to as related part) ,
The server control unit transmits the next component replacement time calculated by the first component replacement time calculation unit to the tag reader as the notification information, and receives the information on the IC tag from the tag reader, the first component replacement time When it is determined that the next part replacement time calculated by the time calculation unit is within a predetermined period from the time of receiving the information of the IC tag and that there is the related part searched by the related part search unit, the related part parts management system for transmitting information as the notification information. In the parts management system according to claim 1 ,
When the server control unit receives the information on the IC tag from the tag reader, the next component replacement time calculated by the first component replacement time calculation unit is before the information reception of the IC tag, and the related component A component management system that transmits, to the tag reader, notification information that prompts inspection or replacement of the related component when it is determined that there is the related component searched by a search unit.

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