JP2008139935A - Machine total information management device - Google Patents

Abstract

Even when a display device is replaced, accurate hour meter data is displayed.
Storage means for storing hour meter data DH which is an integrated value of engine operating time, information update means for updating hour meter data DH by a signal from an engine control device 30, and hour meter data DH. The backup means 21 stored as the backup data DB, the abnormality determination means 23 for determining an abnormality of the hour meter data DH stored in the storage means 12, and when the data abnormality is determined by the abnormality determination means 23, the storage means 12 Information rewriting means 14 for rewriting the stored hour meter data DH to the backup data DB stored in the backup means 21.
[Selection] Figure 3

Description

  The present invention relates to an integrated information management apparatus for a machine that manages integrated information obtained by integrating machine usage time and the like.

  An hour meter is known as this type of integrated information management device. For example, the hour meter of Patent Document 1 updates the accumulated value of the usage time of the machine and stores it in the memory, and displays the usage time on the display unit of the display device provided in the driver's seat.

Japanese Patent Publication No. 8-25412

  By the way, in the hour meter as described above, the memory is usually built in the display device. For this reason, when the display device is replaced due to a failure of the display device or the like, the memory is also replaced at the same time, and the accumulated usage time value may not be displayed correctly.

The machine integrated information management device according to the present invention includes storage means for storing integrated information obtained by integrating usage information correlated with the operating time or travel distance of a machine that generates power, and integrating the usage information with the integrated information. An information updating means for updating the accumulated information stored in the storage means, a backup means for storing the accumulated information as backup information, an abnormality determining means for determining an abnormality in the accumulated information stored in the storage means, and an abnormality determining means And an information rewriting means for rewriting the accumulated information stored in the storage means to the backup information stored in the backup means when the accumulated information is determined to be abnormal.
Preferably, the storage means is provided in the first device, and the backup means is provided in the second device in a separate unit from the first device.
In this case, the first device can further be provided with a display unit for displaying the accumulated information.
When the integrated information value stored in the storage means is smaller than the backup information value, the abnormality determining means may determine that there is an abnormality.
If it is determined that the abnormality is determined to be abnormal by the abnormality determination unit, the information after rewriting by the information rewriting unit may be stored as backup information by the backup unit.

  According to the present invention, the integrated information obtained by integrating the machine usage information is stored as backup information, and when the abnormality of the integrated information is determined, the integrated information is rewritten to the backup information. Appropriately cope with any abnormalities.

Hereinafter, an embodiment of an integrated information management apparatus according to the present invention will be described with reference to FIGS.
FIG. 1 is a side view of a hydraulic excavator equipped with an integrated information management apparatus according to the present embodiment. The hydraulic excavator includes a traveling body 1, a revolving body 2 provided on the traveling body 1 so as to be able to turn, and a work front 3 including a boom, an arm, and a bucket attached to the revolving body 2 so as to be able to turn. . A driver's cab 4 is provided at the front of the revolving unit 2, and an engine room 5 is provided at the rear thereof. A counterweight 6 is attached to the rear end of the revolving unit 2. A display device 10 is arranged in the cab 4.

  FIG. 2 is a front view of the display monitor 11 provided integrally with the display device 10. The display monitor 11 is provided with a water temperature display 11A for displaying the engine coolant temperature, a fuel display 11B for displaying the remaining fuel, a warning display 11C for displaying various warnings, an hour meter display 11D, and the like. . In the hour meter display section 11D, for example, the accumulated operating time of the engine is displayed as hour meter data DH indicating the accumulated value of the usage time of the machine.

  FIG. 3 is a block diagram showing a system configuration of the integrated information management apparatus according to the present embodiment. In FIG. 3, the display device 10, the external storage device 20, and the engine control device 30 are illustrated, and these devices 10 to 30 are connected to each other via the CAN communication line 7.

  The engine control device 30 includes an engine control unit 31 that controls the engine 35 and a communication unit 32 that communicates with the outside via the CAN communication line 7. The actual rotational speed of the engine 35 is detected by a rotational speed sensor 36 (for example, a crankshaft position sensor). A signal from the rotational speed sensor 36 is always input to the engine control unit 31, and the rotational speed signal is transmitted to the display device 10 via the communication unit 32.

  The external storage device 20 includes a storage unit 21 that stores hour meter data DM (cumulative operation time) as a backup data DB, a communication unit 22 that communicates with the outside via the CAN communication line 7, and each unit of the external storage device 20. And a control unit 23 for controlling the operation. The storage unit 21 is configured by a non-volatile memory (such as an EEPROM). The controller 23 includes an arithmetic processing unit having a CPU, ROM, RAM, and other peripheral circuits. The external storage device 20 is a separate unit from the display device 10, and even if the display device 10 is replaced, the external storage device 20 remains attached to the machine.

  The display device 10 includes an hour meter display unit 11D (FIG. 2), a storage unit 12 that stores hour meter data DH, a communication unit 13 that communicates with the outside via the CAN communication line 7, and each unit of the display device 10. And a control unit 14 for controlling the operation. The storage unit 12 is configured by a non-volatile memory (such as an EEPROM). The control unit 14 includes an arithmetic processing unit having a CPU, ROM, RAM, and other peripheral circuits.

  FIG. 4 is a flowchart illustrating an example of processing executed by the program stored in the control unit 23 of the external storage device 20. This program is started by turning on the main key switch, for example. In step S1, it is determined whether or not hour meter data DH has been received. The hour meter data DH is transmitted from the display device 10 every predetermined time Δt as described later. In step S2, the size of the backup data DB and hour meter data DH stored in the storage unit 21 is determined. If it is determined that DB ≧ DH, the process proceeds to step S3, and the backup data DB is transmitted to the display device 10. If it is determined that DB <DH, the process proceeds to step S4, where the backup data DB is rewritten to hour meter data DH and stored in the storage unit 21.

  FIG. 5 is a flowchart illustrating an example of processing executed by a program stored in the control unit 14 of the display device 10. This program is started by turning on the main key switch, for example. In step S11, it is determined based on the rotational speed signal transmitted from the engine control device 30 whether the engine rotational speed is equal to or greater than a predetermined value (for example, idle rotational speed), that is, whether the engine 35 is operating. If step S11 is affirmed, the process proceeds to step S12. In step S12, the engine operating time is counted, and it is determined whether or not the count value has reached a predetermined time (for example, 6 seconds) Δt. If step S12 is negative, the process returns to step S11, and the processes of steps S11 and S12 are repeated until the engine operating time reaches a predetermined time Δt. If step S12 is affirmed, the timer is reset and the process proceeds to step S13.

  In step S13, the hour meter data DH corresponding to the predetermined time Δt is added to the previous hour meter data DH stored in the storage unit 12 to update the value of the hour meter data DH. That is, new hour meter data DH is acquired and stored in the storage unit 12. In step S14, it is determined whether or not the backup data DB (step S3) transmitted from the external storage device 20 has been received. If step S14 is affirmed, the process proceeds to step S15, and if not, the process proceeds to step S16. In step S15, the hour meter data DH is rewritten to the backup data DB and stored in the storage unit 12. In step S16, the hour meter data DH updated in step S13 or step S15 is transmitted to the external storage device 20 and displayed on the hour meter display unit 11D of the display monitor 11.

The operation of the information management apparatus according to the present embodiment will be described more specifically.
If the engine speed is equal to or greater than a predetermined value, that is, if the engine 35 is operating, the hour meter data DH is updated every predetermined time Δt (step S13), and the accumulated operating time of the engine 35 is displayed on the hour meter display unit 11D. Is displayed. The hour meter data DH is transmitted to the external storage device 20 via the CAN communication line 7 (step S16). If the display device 10 is not exchanged, the value of the hour meter data DH transmitted from the display device 10 is larger than the backup data DB, and therefore the external storage device 20 is transmitted each time the hour meter data DH is transmitted from the display device 10. The backup data DB is updated (step S4). At this time, the backup data DB is not transmitted from the external storage device 20 to the display device 10.

  When the display device 10 is replaced due to a failure of the display device 10 or the like, the hour meter data DH of the display device 10 is reset, and the reset hour meter data DH is transmitted to the external storage device 20 (step S16). At this time, the external storage device 20 stores the hour meter data DH before the replacement of the display device 20 as the backup data DB. Therefore, the value of the backup data DB is larger than that of the hour data DB, and the backup data DB is transmitted from the external storage device 20 to the display device 10 (step S3). When receiving the backup data DB, the display device 10 rewrites the hour meter data DH in the backup data DB (step S15). Thereby, even when the display device 10 is replaced, the previous hour meter data DH can be taken over, and the accurate accumulated operating time of the engine 35 can be displayed.

According to the present embodiment, the following operational effects can be achieved.
(1) The hour meter data DH is stored as a backup data DB in the external storage device 20 which is a separate unit from the display device 10, and the backup data DB is transmitted from the external storage device 20 to the display device 10 when the display device 10 is replaced. I did it. As a result, even when the display device 10 is replaced, the accurate hour meter data DH can be displayed on the display monitor 11, and it is possible to appropriately cope with data abnormality of the hour meter data DH. As a result, the usage status of the machine can be correctly grasped, and equipment maintenance and the like can be appropriately performed based on the hour meter data DH. Further, the assessed value of the machine can be legitimately evaluated based on the hour meter data DH.

(2) Compare the hour data DH stored in the external storage device 20 with the value of the backup data DB transmitted from the display device 10, and transmit the backup data DB to the display device 10 when DB ≧ DH. Therefore, it can be determined whether or not the display device 10 has been replaced, and the hour meter data DH can be appropriately rewritten.
(3) After the engine is operated, the hour data DH is compared with the backup data DB every predetermined time Δt. When DB <DH, the backup data DB is updated to the hour data DH. It can be properly backed up and stored.

  In the above embodiment, DB ≧ DH is determined by the external storage device 20 as the second device, that is, the data abnormality of the hour meter data DH is determined, but this determination is performed as the first device. You may make it perform with the display apparatus 10, and the structure of an abnormality determination means is not restricted above. When the data abnormality is determined, the hour meter data DH is rewritten on the display device 10, but information rewriting means may be provided in addition to the display device. For example, as shown in FIG. 6A, an hour meter calculation controller 40 may be connected via the CAN communication line 7 and the controller 40 may calculate or rewrite the hour meter data DH. Although the hour meter data DH is updated on the display device 10 every predetermined time Δt after the engine is operated, the information updating means is not limited to this. For example, instead of measuring the engine operating time, the time when a load exceeding a predetermined value is applied may be measured. Although communication is performed via the CAN communication line 7, the communication form is not limited to this.

  The hour data DH is stored in the storage unit 12 of the display device 10 as the storage unit, and the backup data DB is stored in the storage unit 21 of the external storage device 20 as the backup unit. A storage unit may be provided in the controller 40) of 6 (a) to store the data DH and DB. The backup data DB may be stored in a plurality of devices, and the data abnormality may be determined by comparing the size of the backup data DB stored in each device and the hour meter data DH. For example, as shown in FIG. 6B, two external storage devices 201 and 202 are provided, backup data DB1 and DB2 stored in each storage device 201 and 202, and hour meter data DH stored in the controller 40. And the hour meter data DH may be updated with the largest value as positive.

  In the above embodiment, the hour meter data DH, which is a cumulative value of the usage time of the machine, is used as integration information. However, distance information such as an odometer may be used as integration information, and usage information is obtained from other than the engine control device. May be. That is, as long as it is information obtained by integrating usage information correlated with the machine operating time or travel distance, integrated information other than those described above may be used. Although the example in which the integrated information management device is applied to a crawler type hydraulic excavator has been described above, it can also be applied to a wheel type hydraulic excavator. Further, the present invention can be similarly applied to other machines that generate power. That is, as long as the features and functions of the present invention can be realized, the present invention is not limited to the integrated information management apparatus according to the embodiment.

1 is a side view of a hydraulic excavator equipped with a cumulative information management device according to an embodiment of the present invention. The front view of the display monitor provided in a driver's cab. The block diagram which shows the system configuration | structure of the integrating | accumulating information management apparatus which concerns on embodiment of this invention. 4 is a flowchart showing an example of processing executed by the external storage device of FIG. 3. 4 is a flowchart illustrating an example of processing executed by the display device in FIG. 3. The block diagram which shows the modification of FIG.

Explanation of symbols

10 Display device 11D Hour meter display unit 12 Storage unit 14 Control unit 20 External storage device 21 Storage unit 23 Control unit DH Hour meter data DB Backup data

Claims (5)

Storage means for storing accumulated information obtained by accumulating usage information correlated with an operating time or a travel distance of a machine that generates power;
Information updating means for integrating the usage information with the integration information and updating the integration information stored in the storage means;
Backup means for storing the integrated information as backup information;
An abnormality determining means for determining an abnormality of the accumulated information stored in the storage means;
An information rewriting unit that rewrites the accumulated information stored in the storage unit with the backup information stored in the backup unit when the accumulated information is determined to be abnormal by the abnormality determining unit. Integrated information management device. In the machine integrated information management device according to claim 1,
An integrated information management apparatus for a machine, wherein the storage means is provided in a first device, and the backup means is provided in a second device in a unit different from the first device. In the machine integrated information management device according to claim 2,
The machine's integrated information management apparatus, wherein the first apparatus is further provided with a display unit for displaying the integrated information. In the machine integrated information management device according to any one of claims 1 to 3,
The machine integrated information management apparatus according to claim 1, wherein the abnormality determining unit determines that the abnormality is present when a value of the accumulated information stored in the storage unit is smaller than a value of the backup information. In the machine integrated information management device according to any one of claims 1 to 4,
The integrated information management apparatus for a machine, wherein the backup unit stores information after rewriting by the information rewriting unit as backup information when it is determined to be abnormal by the abnormality determining unit.

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