JP2003312798A - Maintenance management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inform a maintenance company of error information of a meter. <P>SOLUTION: A control circuit 16 of a meter 12A transmits liquid feed information and maintenance information to a management terminal device 14A in the maintenance management system 10. The terminal device 14A at a liquid feed station transmits the maintenance information including error information to a maintenance terminal device 17 of the maintenance company 13 via a public line and the Internet 15 if the maintenance information transmitted from the control circuit 16 of the meter 12A includes the error information. A member of the company 13 can check the maintenance information of respective liquid feed stations A to Z stored in the maintenance terminal device 17 to know on the spot at which station among A to Z the inspection and repair should be done. Thus maintenance can be efficiently served depending on the urgency of a failure. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maintenance management system, and more particularly to a maintenance management system configured to determine whether or not there is an abnormality in each device mounted on a weighing machine that supplies fuel.

[0002]

2. Description of the Related Art As a maintenance management system for supplying fuel such as gasoline and light oil to a vehicle fuel tank,
For example, there is a self-service liquid supply system installed in a liquid supply station. In this self-service maintenance management system, when the customer's vehicle arrives, the customer himself / herself inserts a liquid supply nozzle into the liquid supply port of the fuel tank to supply the liquid. When the liquid supply is completed, the liquid supply nozzle is pulled out from the liquid supply port of the vehicle and returned to the nozzle hook of the weighing machine.

The measuring machine includes a nozzle switch provided on the nozzle hook, a pump activated when the nozzle switch is turned off, a flow meter for measuring the liquid supply amount by opening the liquid supply nozzle, and an integrated flow rate. Various devices such as a display for displaying are installed.

In the self-service type maintenance management system, since the customer operates the liquid supply, even if an abnormality occurs in the equipment of the weighing machine, it cannot be continued until the staff at the gas station notices the occurrence immediately and the operation cannot be continued. The staff at the filling station requests the maintenance company for repair.

Then, the maintenance staff of the maintenance company heads to the liquid supply station upon contact from the liquid supply station, and inspects where the abnormal place is. Furthermore, the maintenance staff replaces the parts on the spot when the abnormal parts are found and if there are replacement parts for the abnormal parts.

[0006]

However, in the prior art, since the maintenance person determines the abnormal portion of the weighing machine after the maintenance staff arrives at the liquid supply station, it may not be possible to immediately prepare a replacement part. In that case, the maintenance staff cannot carry out the repair even if the abnormal portion is known, and only order the parts required for the repair from the manufacturer. Then, when the maintenance personnel can prepare the replacement parts at a later date, they will go to the liquid supply station with the replacement parts. Therefore, conventionally, when an abnormality occurs in the weighing machine, the work efficiency of maintenance is poor,
There was a problem that the weighing machine could not be operated for several days until spare parts could be prepared.

Therefore, an object of the present invention is to provide a maintenance management system which solves the above problems in view of the above points.

[0008]

In order to solve the above-mentioned problems, the present invention has the following features. The invention according to claim 1 includes a weighing machine that supplies fuel, a monitoring unit that monitors the operating state of the weighing machine, and a determining unit that determines whether or not there is an abnormality from information on the weighing machine acquired by the monitoring unit. When it is determined to be abnormal by the determination means, an extraction means for extracting inspection content corresponding to the abnormality content, and an informing means for informing the cause of the abnormality extracted by the extraction means are provided,
Since the maintenance staff can confirm the inspection content corresponding to the abnormality content before going to the site, the maintenance staff will go to the site with the equipment and replacement parts necessary for the inspection, and improve the maintenance work efficiency. It is possible to shorten the operation stop time of the weighing machine.

According to the second aspect of the present invention, the priority of repair is ranked according to the abnormality content, and the inspection is performed in order from the weighing machine having the abnormality content having a high priority or the gas station having the weighing machine. Can be repaired.

According to a third aspect of the present invention, the inspection content is selected according to the combination of the integrated value of the supply amount supplied from the weighing machine and the abnormality content determined by the determination means. It is possible to check the items that are likely to cause an abnormality in advance from the relationship between the abnormality content due to changes and wear of parts and the integrated value of the supply amount, and then move to the site.

According to a fourth aspect of the present invention, data of a cause of abnormality is transmitted to a terminal device of a maintenance company.
Employees of the maintenance company can quickly check the abnormality of the weighing machine at each filling station, so it is easy to take countermeasures for abnormality at each filling station, and maintenance of multiple filling stations can be performed efficiently. .

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of a maintenance management system according to the present invention.

As shown in FIG. 1, the maintenance management system 10 includes a weighing machine 12 installed at each of the liquid supply stations AZ.
(12A to 12Z) and weighing machine 12 (12A to 12Z)
It is composed of management terminal devices 14A to 14Z for managing the above and a maintenance terminal device 17 installed in the maintenance company 13. Further, the management terminal devices 14A to 14Z of the plurality of liquid supply stations A to Z are individually connected to the maintenance terminal device 17 via the public line and the Internet 15 so as to be able to communicate with each other.

At each of the liquid supply stations A to Z, a plurality of weighing machines 12 (12A to 12Z) for supplying an oil liquid such as gasoline to a fuel tank (not shown) of a vehicle are installed. The weighing machine 12 (12A to 12Z) is a self-service liquid supply device, and the customer (driver) himself / herself performs the liquid supply operation.

The management terminal devices 14A to 14Z are
Each liquid supply station A via a communication line (SS-LAN) 18
To Z weighing machines 12 (12A to 12Z) are communicably connected.

Since each of the liquid supply stations A to Z has the same configuration, the configuration of the liquid supply station A will be described here with reference to FIG.

As shown in FIG. 2, the control circuit 16 of the weighing machine 12A is connected via a communication line (SS-LAN) 18 so as to be communicable with the management terminal device 14A installed in the office of the liquid supply station. Has been done.

The management terminal device 14A includes a plurality of weighing machines 12.
The liquid supply information output from A (for example, the amount of liquid supplied to the vehicle,
It manages information such as oil type, amount of liquid supply, and maintenance information (including total amount of liquid supplied by the weighing machine 12A, details of abnormalities of each device, and error information such as whether or not to repair). Then, when the liquid is supplied to the vehicle, the management terminal device 14A stores in the storage device 19 the information individually transmitted from each weighing machine 12A.

Further, the control circuit 16 of the weighing machine 12A transmits the liquid supply information and the maintenance information to the management terminal device 14A every time the liquid supply is completed. When there is error information in the maintenance information transmitted from the control circuit 16 of the weighing machine 12A, the management terminal device 14A sends the error information to the maintenance terminal device 17 of the maintenance company 13 via the public line and the Internet 15. Send maintenance information including.

The maintenance terminal device 17 of the maintenance company 13 receives the latest error information from the management terminal devices 14A to 14Z of the liquid supply stations AZ to which the maintenance contract is always made, and receives the weighing machine. The 12 pieces of error information are stored in the database 17A.

Therefore, the employee of the maintenance company 13 confirms the maintenance information of each of the liquid supply stations A to Z stored in the maintenance terminal device 17 so that the inspection and repair can be performed at any of the liquid supply stations A to Z. You can check whether it is necessary on the spot. Further, the maintenance staff should perform the maintenance time so that the inspections and repairs to be performed on that day are processed in order from the error information with the highest priority based on the latest maintenance information obtained from the maintenance terminal device 17 before the start of the day. Since a schedule can be set up, it is possible to efficiently perform maintenance according to the importance of the abnormality content.

The weighing machine 12A includes a liquid supply pump 22, a flow meter 24, and a flow control valve 2 in a liquid supply pipe 20 for pumping oil liquid from an underground tank (not shown) buried underground in the liquid supply station.
6 is provided. Then, at the tip of the liquid supply hose 28 communicating with the discharge port of the flow rate control valve 26, the liquid supply nozzle 3
0 is provided. Further, the flow control valve 26 is opened by a valve opening signal from the control circuit 16 and closed when the valve opening signal is turned off.

The liquid supply nozzle 30 is hooked on a nozzle hook 32 provided on the side surface of the housing of the liquid supply device 12, and is removed from the nozzle hook 32 when the fuel is supplied to the vehicle to open the valve. To be done. Further, the nozzle hook 32 has a liquid supply nozzle 3
A nozzle switch 34 for detecting the presence or absence of 0 is provided. The nozzle switch 34 is used for the liquid supply nozzle 30.
Is turned off when it is hooked on the nozzle hook 32, and is turned on when the liquid supply nozzle 30 is removed from the nozzle hook 32.

Further, a pump motor 36 for driving the liquid supply pump 22, a pulse oscillator 38 for outputting a flow rate pulse proportional to the flow rate measured by the flow meter 24, is provided in the housing of the liquid supply device 12, and Display 4 that displays the accumulated value of the supplied liquid
0 and are provided.

Further, the pump motor 36 is provided with a temperature sensor 36a. This temperature sensor 36a is
The temperature when the pump motor 36 is started is monitored, and when the temperature of the pump motor 36 exceeds a preset allowable temperature, a temperature detection signal is output to the control circuit 16. The control circuit 16 is electrically connected to the flow control valve 26, the nozzle switch 34, the pump motor 36, the temperature sensor 36a, the pulse transmitter 38, and the display 40.

When the ON signal is input from the nozzle switch 34, the control circuit 16 activates the pump motor 36 and opens the flow rate control valve 26 to enable liquid supply. Further, when the flow pulse is output from the pulse transmitter 38 by the valve opening operation of the liquid supply nozzle 30, the control circuit 16 causes the display 40 to display the liquid supply amount calculated from the integrated value of the flow pulse. Perform control processing.

When the nozzle switch 34 is turned off, the control circuit 16 stops the pump motor 36 and closes the flow control valve 26 because the liquid supply is completed, and the liquid supply charge corresponding to the liquid supply amount is set. Calculate and display.

Further, as will be described later, the control circuit 16 integrates the flow rate pulses output from the pulse oscillator 38 to calculate the instantaneous flow rate, and when the liquid supply is started, the discharge amount is set to a preset value ( It has a control program (discharge amount monitoring means) for comparing with the upper limit discharge amount and the lower limit discharge amount. Then, when a difference from the set value occurs, the control circuit 16 creates an abnormality content (error information) according to the difference at that time (difference with respect to the upper limit discharge amount and the lower limit discharge amount) and stores it in the memory 44. Let

The control circuit 16 also has a control program (temperature monitoring means) for comparing not only the above-mentioned flow rate pulse but also the temperature value detected by the temperature sensor 36a with a preset set value (reference flow rate). In addition, the control circuit 16
In addition to the above-mentioned flow rate pulse, has a control program (preset monitoring means) that compares the liquid supply amount when the liquid supply is completed with a preset value (set value) when the liquid supply amount is preset.

Then, in the control circuit 16, when there is an abnormality in the motor temperature or the preset liquid supply amount, the abnormality content (error information) is created and stored in the memory 44.

FIG. 3 is a diagram showing an example of an error item list stored in the memory 44. As shown in FIG.
The memory 44 stores an error item list 50 in which error information and error contents corresponding to the error codes E01 to E04 are set. In this embodiment, for example, the error code E01 is the discharge amount decrease (20 L / min),
The error code E02 is set to correspond to an abnormal content such as an excessive discharge amount (40 L / min), the error code E03 is a fixed amount excess (preset error), and the error code E04 is a motor temperature rise (motor overheat).

When the liquid supply to the vehicle is completed, the control circuit 16 executes the monitoring process for checking the presence or absence of the error information set in the error item list 50 each time, and the error corresponding to the error codes E01 to E04 is executed. If there is no information, it is determined that there is no abnormality.

FIG. 4 is a diagram showing an example of the maintenance information list stored in the memory 44. As shown in FIG. 4, maintenance information 001 to 00 is stored in the memory 44.
A maintenance information list 52 in which data types corresponding to No. 4 and operation data for each data are set is stored. In the present embodiment, for example, the total integrated amount, the number of times of refueling, the proper discharge amount, the motor temperature, etc. are registered as the data type, and the operation data (integrated amount = 1200) for each data is registered.
0KL, number of refueling = 5000 times, proper discharge rate = 35L / mi
n, motor temperature = 40 ° C.) is recorded.

The control circuit 16 updates the operation data of each data type registered in the maintenance information list 52 each time the supply of liquid to the vehicle is completed, and the metering device 1 is constantly operated.
The memory 44 stores the latest operating data such as the total integrated amount indicating the operating state of 2 A, the number of times of refueling, the proper discharge amount, and the motor temperature.

FIG. 5 is a diagram showing an example of a maintenance record database stored in the storage device 19. As shown in FIG. 5, in the maintenance record database 54, the maintenance codes M01 to M0 of each weighing machine 12A are stored.
The cumulative amount of the maintenance items at the time of execution corresponding to No. 7 is recorded, and the maintenance worker registers and updates each weighing machine from the management terminal device 14A every time the maintenance is performed.

As a maintenance item, for example, M0
1 = strainer, filter cleaning, replacement, M02 = belt inspection and adjustment, M03 = solenoid valve cleaning, M04 = belt replacement, M05 = hose inspection and replacement, M06 = nozzle inspection and replacement, M07 = motor overheat, inspection, etc. Has been done.

FIG. 6 is a diagram showing an example of a judgment condition database when the management terminal device 14A executes the error priority judgment processing. As shown in FIG. 6, the determination condition database 56 stores the error codes E011 to E01.
The error information corresponding to No. 8 and its determination condition are registered, and the priority (rank A to C) and the inspection content corresponding to each determination condition are registered.

The management terminal device 14A ranks the priority of each error information based on the judgment condition registered in the judgment condition database 56. Also, as the judgment condition,
A calculation formula for calculating a numerical value based on the integrated value of the liquid supply amount is registered.

Therefore, the management terminal device 14A reads the accumulated amount of each maintenance item accumulated in the maintenance record database 54 (see FIG. 5) and determines whether or not there is an abnormality in each maintenance item. For example, in the case of the error code E012, the maintenance code M0 is calculated from the accumulated amount.
When the value obtained by subtracting the integrated amount of 2 (see the database 54 in FIG. 5) is 100,000 or more, it is determined that belt inspection and adjustment are necessary. Also, in the case of other error codes other than the error code E012, the same calculation as above is performed to determine the presence / absence of abnormality, but the description thereof is omitted here.

FIG. 7 is a diagram showing an example of the error priority list created by the management terminal device 14A. As shown in FIG. 7, the error priority list 58 is stored in the storage device 19.
The abnormal locations (error information) are registered in descending order of priority (ranks A to C) set by the determination process. That is, the management terminal device 14A
Records the maintenance item of rank A having a high priority ranked by the determination processing in the upper rank, records the maintenance item of rank B having a higher priority next, and the maintenance item of rank C having a lower priority below that. Record the item.

As will be described later, the error priority list 58 created in this manner is used for maintenance terminal device 1 of the maintenance company 13 when the liquid supply to the vehicle is completed.
Sent to 7.

FIG. 8 is a diagram showing an example of the priority list recorded in the database of the maintenance company. Figure 8
As shown in, the priority list 60 is recorded in the database 17A of the maintenance company 13 and can be read by the maintenance terminal device 17. The priority list 60 is created based on the error priority list 58 transmitted from each of the liquid supply stations AZ having a maintenance contract.

Therefore, in the priority list 60,
Among the error information transmitted from each of the liquid supply stations A to Z, the error information determined to be the rank A of the priority is registered in the upper rank, and the error information transmitted from each of the liquid supply stations A to Z next. Among them, the error information determined to be rank B is registered. The error information determined as rank C is registered under the priority list 60.

An employee of the maintenance company 13 can confirm the display of the priority list 60 on the maintenance terminal device 17 before leaving for the maintenance work of the day.
You can see at a glance which liquid supply stations require urgent maintenance, immediately determine which liquid supply station should be prioritized, and create a time schedule to be performed on that day, so that maintenance work can be performed efficiently.

Further, regarding the repair of a necessary abnormal portion of the replacement part, it is possible to notify the manufacturer or the like of the arrangement of the replacement part in advance, so that the replacement work can be performed with the replacement part ready. . As described above, the maintenance staff should inspect and repair the weighing machine having the abnormality content with a high priority or the gas station having the weighing machine in order based on the priority list 60 displayed on the maintenance terminal device 17. You can

Therefore, it becomes possible for the maintenance personnel to save the trouble of going to the liquid supply station in order to check the failure location of the weighing machine 12 as in the conventional case, and to efficiently go around a plurality of liquid supply stations. It will be possible.

Here, together with the liquid supply processing of the weighing machine 12A,
The abnormality monitoring process executed by the control circuit 16 will be described.

FIG. 9 is a flowchart of the control process executed by the control circuit 16. As shown in FIG. 9, the control circuit 16 checks in step S11 (hereinafter, “step” is omitted) whether the nozzle switch 34 is on. When the liquid supply nozzle 30 is removed from the nozzle hook 32 and the nozzle switch 34 is turned on, the process proceeds to S12, and the flow rate integrated value is reset. Then, it progresses to S13 and starts the pump motor 36 of the pump 22.

At the next step S14, the flow control valve 26 is opened. With this, the weighing machine 12A is ready for liquid supply.
Then, in S15, the flow rate pulses are integrated to calculate the integrated flow rate, and the display 40 displays the integrated flow rate.

Subsequently, in S16, the amount of liquid supplied to the vehicle (integrated value) and the motor temperature measured by the temperature sensor 36a are stored in the memory 44.

In S17, it is checked whether the nozzle switch 34 is off. In S17, when the liquid supply nozzle 30 is returned to the nozzle hook 32 and the nozzle switch 34 is turned off, the process proceeds to S18 and the flow rate control valve 26 is closed. Then, it progresses to S19 and stops the pump 20.

This completes the liquid supply to the vehicle. Then, the process proceeds to S20, and each operation data in the maintenance information list 52 is updated.

In the next step S21, the discharge amount (liquid supply amount) after the liquid supply is completed is read from the memory 44, and the excessive discharge amount monitoring process is performed (discharge amount monitoring means). That is, in S21, it is checked whether or not the discharge amount at the time of liquid supply is larger than a predetermined discharge amount (upper limit value) set in advance. In S21, when the current discharge amount is larger than the preset predetermined discharge amount, the process proceeds to S22, and the excessive discharge amount is recorded in the memory 44.

In S21, when the discharge amount at the time of liquid supply is smaller than the predetermined discharge amount (upper limit value) set in advance, there is no abnormality, so the process of S22 is omitted and the process proceeds to S23.

In the next step S23, the discharge amount (liquid supply amount) after the liquid supply is completed is read from the memory 44 and the discharge amount decrease monitoring process is performed (discharge amount monitoring means). That is, in S23, it is checked whether or not the discharge amount at the time of liquid supply is smaller than a predetermined discharge amount (lower limit value) set in advance. In S23, when the current discharge amount is less than the predetermined discharge amount set in advance, the process proceeds to S24, and the discharge amount decrease is reduced in the memory 4
Record in 4.

In S23, if the discharge amount at the time of liquid supply is larger than the predetermined discharge amount (lower limit value) set in advance, there is no abnormality, so the process of S24 is omitted and the process proceeds to S25.

In the next step S25, the motor temperature measured by the temperature sensor 36a is read from the memory 44 and the monitoring process of the motor temperature rise is performed (temperature monitoring means). That is, in S25, it is checked whether or not the temperature of the pump motor 36 during liquid supply is equal to or higher than a preset allowable temperature. In S25, when the temperature of the pump motor 36 is equal to or higher than the allowable temperature, the process proceeds to S26, and the motor temperature rise is recorded in the memory 44.

In S25, the pump motor 36
If the temperature is below the allowable temperature, there is no abnormality.
Processing is omitted and the process proceeds to S27.

In next step S27, it is checked whether or not the current liquid supply mode is the preset liquid supply. In S27,
In the case of preset liquid supply, the process proceeds to S28, and it is checked whether the liquid supply amount is equal to or larger than a preset value (quantitative monitoring means). In S28, when the liquid supply amount is equal to or larger than the preset value, the process proceeds to S29, and the fixed amount is recorded in the memory 44.

In S27, if the current liquid supply mode is not the preset liquid supply, or if the liquid supply amount is equal to or less than the preset value in S28, there is no abnormality. Therefore, the process of S30 is omitted and the process proceeds to S30. .

At the next step S30, it is checked whether or not there is an error (abnormality) in the monitoring processing at steps S21 to S29. When an error is recorded in the memory 44 in S30, the process proceeds to S31 and the error information and the operation information are transferred to the management terminal device 14A. If no error is recorded in the memory 44 in S30, the current process is terminated.

Here, the control processing executed by the management terminal device 14A will be described. FIG. 10 shows the management terminal device 14A.
6 is a flowchart of a control process executed by the. As shown in FIG. 10, when the management terminal device 14A receives the data including the liquid supply information and the maintenance information (see FIG. 4) transferred from the weighing machine 12A in S41, the process proceeds to S42, and the received data It is checked whether or not there is error information (determination means).

In S42, if there is error information in the received data, the process proceeds to S43, and the maintenance record of the weighing machine 12A is extracted. Then, proceed to S44,
The inspection content that matches the error information and the determination condition (see FIG. 6) is extracted (extracting means).

In the next step S45, the priorities of inspection contents matching the judgment conditions are ranked (see FIG. 7). Subsequently, the process proceeds to S46, and the error priority list 58 as shown in FIG. 7 is transferred to the maintenance terminal device 17 of the maintenance company 13 via the Internet 15 (informing means).

In this way, when the maintenance terminal device 17 of the maintenance company 13 receives the error priority list 58 transmitted from the management terminal devices 14A to 14Z of each liquid supply station, the error information is stored in the database together with the priority. 17A and update the priority list 60 shown in FIG.

Now, the employees of the maintenance company 13 are
The latest priority list 60 can be viewed at any time by the maintenance terminal device 17, and each of the liquid supply stations AZ
Since it is possible to check the presence or absence of error information and the contents of abnormality of the weighing machines 12A to 12Z installed in the above together with the priority order, it is possible to inspect in order from the error information that requires urgent.

In the above embodiments, the case where the abnormality of the weighing machines 12A to 12Z for supplying oil liquid such as gasoline to the vehicle is monitored and the abnormality content is determined has been described as an example. Of course, the present invention can also be applied to a liquid supply system configured to supply fuel other than oil liquid.

In the above embodiment, the weighing machine 12A is used.
~ 12Z management terminal device 14A ~ 14 provided separately
In Z, the extraction process of error information, the collation with the determination condition, the ranking process of the priority order, and the like are performed, but the present invention is not limited to this, and these processes are performed by the control circuit 16 mounted on the weighing machines 12A to 12Z. It may be collectively managed, or may be configured to be managed by the maintenance terminal device 17 of the maintenance company 13.

Further, in the above embodiment, the case where the data such as the error information, the details of the abnormality, the priority order, etc. created by the management terminal devices 14A to 14Z of each liquid supply station is transferred to the maintenance company 13 via the Internet 15. Although given as an example, the transfer is not limited to this, and the transfer can be performed using another method (for example, an ordinary telephone line or PHS (Personal Handyphone System)).

Further, the management terminal devices 14A to 1 of the respective liquid supply stations
Instead of transferring data such as error information, abnormality content, and priority order created in 4Z to the maintenance company 13, the administrator of the liquid supply station is notified, and the administrator sends an email to the maintenance terminal device 17 of the maintenance company 13. It is also possible to transfer the error information of the weighing machine 12.

[0071]

As described above, according to the invention described in claim 1, from the weighing machine for supplying the fuel, the monitoring means for monitoring the operating state of the weighing machine, and the information of the weighing machine acquired by the monitoring means. Judgment means for judging the presence or absence of abnormality, when it is judged to be abnormal by the judgment means, extraction means for extracting inspection content corresponding to the abnormality content, notification means for notifying the cause of the abnormality extracted by the extraction means, Since the maintenance personnel can check the inspection content corresponding to the abnormality content before going to the site, the maintenance personnel will go to the site with the equipment and replacement parts necessary for the inspection, and go to the site. It is possible to improve the efficiency and reduce the down time of the weighing machine.

According to the second aspect of the present invention, since the priority of repair is ranked according to the content of the abnormality, the inspection is performed in order from the weighing machine having the abnormality content having a high priority or the gas station having the weighing machine. Can be repaired.

According to the third aspect of the present invention, the inspection content is selected according to the combination of the integrated value of the supply amount supplied from the weighing machine and the abnormality content determined by the determination means. It is possible to confirm in advance the items that are likely to cause an abnormality from the relationship between the content of the abnormality caused by changes and wear of parts and the integrated value of the supply amount, and then move to the site.

According to the invention described in claim 4, since the data of the cause of the abnormality is transmitted to the terminal device of the maintenance company,
Employees of the maintenance company can quickly check the abnormality of the weighing machine at each filling station, so it is easy to take countermeasures for abnormality at each filling station, and maintenance of multiple filling stations can be performed efficiently. .

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a maintenance management system according to the present invention.

FIG. 2 is a system configuration diagram showing a configuration of a liquid supply station A and a configuration of a maintenance management system.

FIG. 3 is a diagram showing an example of an error item list stored in a memory 44.

FIG. 4 is a diagram showing an example of a maintenance information list stored in a memory 44.

5 is a diagram showing an example of a maintenance record database stored in a storage device 19. FIG.

FIG. 6 is a diagram showing an example of a determination condition database when performing an error priority determination process executed by the management terminal device 14A.

FIG. 7 is a diagram showing an example of an error priority list created by a management terminal device 14A.

FIG. 8 is a diagram showing an example of a priority list recorded in a database of a maintenance company.

FIG. 9 is a flowchart of control processing executed by the control circuit 16.

FIG. 10 is a flowchart of a control process executed by the management terminal device 14A.

[Explanation of symbols] 10 Maintenance management system 12 (12A-12Z) Weighing machine 13 Maintenance company 14A-14Z management terminal device 15 Internet 16 Control circuit 17 Maintenance terminal device 17A database 18 communication lines (SS-LAN) 19 storage device 20 Supply line 22 Liquid feed pump 24 flow meter 26 Flow control valve 28 Liquid supply hose 30 Liquid supply nozzle 32 nozzles 34 nozzle switch 36 pump motor 36a Temperature sensor 38 pulse transmitter 40 display 44 memory 50 error item list 52 Maintenance information list 54 Maintenance record database 56 Judgment condition database 58 Error Priority List 60 priority list

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazuhiro Ohara             13 Tanyo, Kakegawa, Shizuoka Prefecture Tokiko Corporation Shizuoka             in the factory F-term (reference) 3E083 AA01 AB20 AD17 AJ13

Claims (4)

[Claims] 1. A weighing machine for supplying fuel, a monitoring means for monitoring an operating state of the weighing machine, a judging means for judging whether or not there is an abnormality from information of the weighing machine acquired by the monitoring means, and the judgment. Maintenance management characterized by comprising: an extraction unit that extracts inspection content corresponding to the abnormality content when the unit determines that the abnormality is detected; and an informing unit that notifies the cause of the abnormality extracted by the extraction unit. system. 2. The determination means ranks repair priorities according to the contents of abnormality.
Maintenance management system described. 3. The extraction means selects the inspection content according to the combination of the integrated value of the supply amount supplied from the weighing machine and the abnormality content determined by the determination means. The maintenance management system described in 1. 4. The maintenance management system according to claim 1, wherein the notifying unit transmits the data of the cause of the abnormality to the terminal device of the maintenance company.