JP2014025343A - Operation state capture system of work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an operation state of a work machine to be easily captured.SOLUTION: An operation state capture of a work machine includes: transmission means for transmitting an operation state in each portion of a work machine 1 to a server by e-mail; and a computer 52 capable of accessing to the server. The computer 52 includes: a state capturing part 55 for accessing to the server to capture the operation state stored in the server; and a display part for displaying the operation state captured by the state capturing part 55. The computer 52 is provided with a failure estimation part 56 for automatically estimating a failure of the work machine 1 on the basis of the captured operation state.

Description

  The present invention relates to an operation status capturing system for a work machine such as a backhoe.

Conventionally, work machines such as backhoes have been used at various construction sites and the like, and prompt response is required when they break down. Although it is possible to find and repair the cause of the failure of the work machine 1 at the construction site, it is a fact that the structure of recent work machines is complicated, and it is not easy to find the cause of the failure immediately.
In view of the above, various systems have been developed for diagnosing work machine failures (for example, Patent Document 1).

  Patent Document 1 discloses a construction machine failure diagnosis method for performing failure diagnosis by transmitting and receiving signals to and from each other by communication devices provided in a construction machine and an information management center, respectively, and a first signal relating to a failure in a construction machine. Is generated by the construction machine, and the first signal is transmitted from the construction machine to the information management center via the communication device. When the first signal is transmitted, the first signal is transmitted based on the first signal. A second step of generating a second signal for identifying a fault location in the information management center, and transmitting the second signal from the information management center to the construction machine via the communication device; And a third step of notifying the operator of failure information related to the second signal.

JP 2002-332664 A

In the failure diagnosis method of Patent Document 1, many questions for diagnosing a failure are displayed on the display device of the work machine, and the failure is diagnosed unless an operator operating the work machine answers the question. As a result, it was very time-consuming to diagnose the failure part of the work equipment.
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a work machine operation state capturing system that can easily capture the operation state of the work machine.

  The technical means of the present invention for solving this technical problem comprises transmission means for transmitting the operation status of each part of the work machine to a server by e-mail, and a computer accessible to the server, The computer is provided with a status capturing unit that accesses the server and captures the operating status stored in the server, and a display unit that displays the operating status captured by the status capturing unit.

The computer is provided with a failure estimation unit that automatically estimates a failure of the work machine based on the captured operation state.
Other technical means of the present invention include a communication device that transmits the operation status of each part of the work machine to the outside by e-mail, and an e-mail that is received and received from the communication device. And a computer capable of accessing the server and capturing the operational status stored in the server and displaying the captured operational status.

  A display device that is provided in the work machine and that converts and displays an operation state of each part of the work machine; and the communication device reads and reads the image displayed on the display device via a network The point is to send to the server.

  According to the present invention, it is possible to easily capture the operating status of the work machine.

It is a block diagram of a failure diagnosis support system. The block diagram of a display apparatus is shown. 1 is an overall front view of a display device. It imitates the operation information stored in the storage unit. The operation procedure until an image of operation information is displayed is shown. It shows the screen when the failure estimation unit is activated. This is a simulation of the contents stored in the failure diagnosis database. It shows the flow from the operation information until the failure is estimated. . The whole side view of a working machine is shown.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 9 shows an example of a work machine in the work machine failure diagnosis support system.
First, the working machine will be described. The work machine applied to the work machine failure diagnosis support system of the present invention is not limited to the work machine shown in this embodiment.
As shown in FIG. 9, the work machine (backhoe) 1 includes a lower traveling device 2 and an upper swing body 3.

The traveling device 2 includes a pair of left and right traveling bodies 4 each having a rubber cover, and a crawler traveling device in which both traveling bodies 4 are driven by a traveling motor M is employed. Further, a dozer 5 is provided at the front portion of the traveling device 2.
The swivel body 3 includes a swivel base 12 supported on the travel device 2 via a swivel bearing 11 so as to be able to turn left and right around a swivel axis in the vertical direction, and a working device 13 ( Drilling device). On the swivel base 12, an engine, a radiator, a driver's seat 9, a fuel tank, a hydraulic oil tank, and the like are provided. Around the driver's seat 9, a display device 25 that displays various information related to the work machine 1 is provided. The driver's seat 9 is surrounded by a cabin 14 provided on the turntable 12.

  The working device 13 includes a swing bracket 17 supported on a support bracket 16 provided at the front portion of the swivel base 12 so as to be offset slightly to the right from the central portion in the left-right direction, and swingable to the left and right around the vertical axis. The boom 18 is pivotally attached to the swing bracket 17 so that the base side is pivotable about a left-right axis, and is supported so as to be swingable up and down, and on the distal end side of the boom 18 about the left-right axis. The arm 19 is pivotally mounted and supported so as to be able to swing back and forth, and a bucket 20 is provided on the distal end side of the arm 19 so as to be capable of squeezing and dumping.

  The swing bracket 17 is swung by expansion and contraction of a swing cylinder provided in the swivel base 12, and the boom 18 is swung by expansion and contraction of a boom cylinder 22 interposed between the boom 18 and the swing bracket 17. The arm 19 is swung by the expansion and contraction of the arm cylinder 23 interposed between the arm 19 and the boom 18, and the bucket 20 is a bucket cylinder 21 interposed between the bucket 20 and the arm 19. Squeezing and dumping is performed by expanding and contracting.

As shown in FIG. 1, the work machine failure diagnosis support system 50 performs failure diagnosis of the work machine 1 based on the operation status sent from the work machine 1.
The failure diagnosis support system 50 includes a status transmission unit 51, a failure diagnosis unit 52, and a failure diagnosis database 53.
The status transmission means 51 is for transmitting the operation status of each part of the work machine 1 for fault diagnosis. The display device 25 converts the operation status of the work machine 1 into an image and displays it, and this display. And a communication device 45 that reads an image displayed on the device 25 and transmits an operation state in the image via a network.

As shown in FIGS. 2 and 3, the display device 25 is a control composed of an input unit 26 for performing various settings of the work machine 1, a display unit 27 for displaying information related to the work machine 1, a CPU, and the like. Unit 28 and a storage unit 29 composed of a nonvolatile memory or the like.
The control unit 28 includes, for example, a fuel (remaining amount) output from the fuel sensor, a water temperature output from the water temperature sensor, an engine oil pressure switch that detects whether or not the engine oil is insufficient, and various outputs output from the input unit 26. Input signal and engine speed are input. The control unit 28 receives signals from other sensors and signals from other control devices connected to the display device 25.

The display unit 27 includes a variable display unit 30 that variably displays characters, graphics, and the like, and a fixed display unit 31 that represents the state of the work machine 1 by turning on and off.
The fixed display unit 31 is lit to turn on the warning / attention lamp 31a that urges attention and warning when it is driven, and the oil lamp 31b that indicates that engine oil is insufficient by turning on the fixed display unit 31. A battery lamp 31c indicating power shortage and a traveling lamp 31d indicating that the work implement 1 is traveling at a high speed by being turned on are provided. The warning and caution lamp 31a, the oil lamp 31b, the battery lamp 31c, and the traveling lamp 31d described above indicate that the corresponding states are not caused by turning off. The fixed display unit 31 may be other than the warning and caution lamp 31a, the oil lamp 31b, the battery lamp 31c, and the traveling lamp 31d as long as the information about the work machine 1 is indicated by turning on and off.

The variable display unit 30 is composed of, for example, a liquid crystal, and displays a state when the work machine 1 is operated, or displays a guidance such as operation of the work machine 1 by changing the dot display of the liquid crystal. .
The input unit 26 includes a plurality of button switches SW (SW1, SW2, SW3, SW4, SW5). The plurality of button switches SW are provided adjacent to the variable display unit 30 in parallel on the left and right, and each button switch has a predetermined function.

  For example, the button switch SW1 is used to perform various settings of the work machine 1, the button switch SW2 is used to set the work mode to the hanging work mode, and the button switch SW3 is the arm of the work device 13. The button switch SW4 is used for restricting and setting the swing range of 17 and the user is provided with a fixed guidance (information) by the variable display unit 30. The button switch SW5 is provided for the variable display unit. It is for switching the display of 30. Note that the plurality of button switches SW also operate as switches for selecting the arrows Y and the like corresponding to the arrows Y and the like displayed on the lower side of the variable display section 30. Each button switch is not limited to having the above-described functions, and may have other functions.

  The storage unit 29 can store operation states of various operation units. Specifically, as shown in FIG. 4, the engine speed, battery voltage, starter ON / OFF status, water temperature sensor operating voltage, fuel sensor voltage, engine oil pressure switch voltage, accelerator sensor voltage. It is possible to store the operating status of various operating units such as the current of the AI motor. In addition, although various apparatuses etc. are mounted in the working machine 1, the apparatus which operate | moves is called an operation | movement part.

In addition, a destination (for example, an e-mail address, an IP address) is stored in advance in the storage unit 29 in order to send the accumulated operation status (operation information) to the outside. Further, the storage unit 29 stores a code for identifying (specifying) the work implement 1.
The control unit 28 includes code conversion means 40, image display means 41, and image position change means 43. The code conversion means 40, the image display means 41, and the image position change means 43 are configured by a program incorporated in the control unit 28 such as a CPU.

  The code conversion means 40 converts the operation status into image data (for example, a two-dimensional code) in order to send the operation status (operation information) stored in the storage unit 29 to the outside. In this embodiment, the code conversion means 40 converts the operation information stored in the storage unit 29 into a QR (Quick Response) code (registered trademark). The code converting means 40 may be any device that converts the operation information into image data that can be read by various communication devices 45 such as a mobile phone and a netbook computer. The converted image is a QR code ( (Registered trademark).

  In this code converting means 40, when the amount of operation information is large and cannot be converted into one QR code (registered trademark), first, a part of all the operation information (1 operation information) is converted into 1 QR code (registered trademark) (image data) is converted into other QR code (registered trademark) (image data). As shown in FIG. 4, for example, the code converting unit 40 converts the first group of operation information (1 operation information) from the operation information stored in the storage unit 29 to the QR code (1 to 4). The second group of operation information (other operation information) having storage numbers 5 to 8 is converted into a QR code (registered trademark).

As described above, the first group and the second group are grouped together as operation information as described later.
In addition, when converting the operation information into image data, the code converting unit 40 uses a QR code as a code for specifying the destination (for example, mail address, IP address) and the work machine 1 stored in the storage unit 29. (Registered trademark).

The image display means 41 displays the information converted into QR code (registered trademark) (image data) on the display unit 27 in order to send the operation information stored in the storage unit 29 to the outside. The image display means 41 will be described in accordance with the procedure for displaying the QR code (registered trademark) (image data).
As shown in FIG. 5, first, when the key switch is turned on while the button switch SW5 is pressed while the normal screen is displayed, items such as “diagnosis” and “setting” are displayed. Here, when the item “diagnosis” is selected (the cursor is moved to the item for diagnosis and the button switch SW5 is pressed), the item “diagnosis transmission” is displayed. When the item of “diagnosis transmission” is selected (the cursor is moved to the item of diagnosis transmission and the button switch SW5 is pressed), the operation information in the storage unit 29 is converted into a QR code (registered trademark) by the code conversion means 40, The converted QR code (registered trademark) and the other QR code (registered trademark) are displayed side by side on the variable display unit 30 by the image display means 41. When displaying the QR code (registered trademark), the image display means 41 displays a number below the QR code (registered trademark) corresponding to the number of QR codes (registered trademark). By displaying numbers corresponding to the number of QR codes (registered trademark), it is possible to prevent confusion when an operator reads the QR code (registered trademark) using a mobile phone or the like.

Note that the display device 25 may automatically display the operation information when the work machine 1 fails.
The image position changing unit 43 changes the position of one QR code (registered trademark) and / or another QR code (registered trademark) displayed on the variable display unit. For example, in a state in which one QR code (registered trademark) and another QR code (registered trademark) are displayed on the variable display unit 30, a number indicating the QR code (registered trademark) is selected by the button switch SW, When the button switch SW corresponding to each arrow Y or the like displayed on the lower side of the variable display unit 30 is selected, the entire QR code (registered trademark) corresponding to the number selected by the image position changing means 43 is displayed in accordance with the arrow Y. Shift in direction. Thus, the QR code (registered trademark) moves vertically and horizontally (x direction, y direction) on the screen of the variable display unit.

  The communication device 45 is a mobile phone with a camera or the like, and reads the QR code (registered trademark) displayed on the variable display unit 30 of the display device 25 by the camera, thereby operating information in the QR code (registered trademark). Can be captured. Further, the communication device 45 sends the QR code (registered trademark) information, that is, the operation information to the transmission destination (for example, an e-mail address) stored in the QR code (registered trademark) using the communication function. Can be transmitted using. The e-mail having the operation information is stored in an e-mail server 57 connected to the network. The e-mail server 57 transmits and receives e-mails and delivers them to a predetermined client (computer). For convenience of explanation, the e-mail server 57 collectively stores e-mails sent from the communication device 45. Will be described as an e-mail server 57.

The failure diagnosing means 52 receives an operation state and diagnoses a failure of the work machine 1 based on the operation state, and is composed of a computer (personal computer).
The computer (failure diagnosis means 52) includes a status capturing unit 55 and a failure estimation unit 56. The status capturing unit 55 and the failure estimating unit 56 are configured by a program stored in the computer 52.

The status capturing unit 55 captures the operational status of each part of the work machine 1, and accesses the electronic mail server 57 to capture operational information from the electronic mail server 57.
The failure estimation unit 56 automatically estimates a failure based on the operation status captured by the status capture unit 55 and the repair results stored in the failure diagnosis database 53. Specifically, the failure estimation unit 56 is configured by application software for estimating a failure from a situation (symptom). When the application software is started, a screen as shown in FIG. Displayed on the monitor. As shown in the figure, the failure estimation unit 56 (application software) has a plurality of items for inputting the situation (symptoms) of each part and answers to the symptoms of each part, and has been sent. Answers are automatically made to the symptom item from the operation status (operation information) of each part.

That is, when the operation status of each part is captured by the status capturing unit 55, the failure estimation unit 56 automatically answers the symptom item from the operation status of each part. For example, the failure estimation unit 56 reads the resistance value of the boom solenoid valve from the received operating situation, and if the resistance value is between 6 and 15Ω, the answer is automatically “Yes”.
Then, the failure estimation unit 56, as described above, each operation state (symptoms and answers of each part) taken in the situation fetching unit 55 and each repair record stored in the failure diagnosis database 53. The failure is estimated by checking the operation status of the part. That is, as shown in the diagnosis result from the symptom of each part and the pattern of the answer, the failure estimation unit 56 displays the content that seems to be a failure (estimated cause) and displays the treatment items corresponding to the failure. It has become.

The fault estimation method in the fault estimation unit 56 will be described in detail together with the fault diagnosis database 53.
The failure diagnosis database 53 is a database used for failure diagnosis, and is provided in the computer 52, for example. As shown in FIG. 7, in the failure diagnosis database 53, a plurality of repaired contents (for example, repair contents A, B, C ...) and an answer (for example, ◯: yes ×: no) regarding the symptoms (for example, 1 to 19) of each part at the time of repair are stored in association with each other.

  That is, a plurality of repair contents and answers regarding the symptoms of each part when repair is performed are repair results, and past repair results are collected and stored in the failure diagnosis database 53. For example, in the failure diagnosis database 53, when the repair content is “A”, regarding the symptom of each part (1 to 19), the answers for the first, fourth and eleventh parts indicate “yes”. Data is stored. Similarly, when the repair content is “B”, data indicating “Yes” is stored for the answers of No. 2, No. 4, No. 10 and No. 12 for the symptoms of the respective parts (1 to 19). ing.

  As shown in FIG. 8, the failure estimation unit 56 first obtains the symptom of each part and the pattern of the answer based on the operation status sent from the work machine 1, and stores it in the pattern and the failure diagnosis database 53. By comparing the symptom of each part and the pattern of the answer, the repair content that matches them is extracted, and the failure is estimated from the repair content. For example, as illustrated in FIG. 8, the failure estimation unit 56 indicates “◯” for the first, fourth, and eleventh symptoms from the operation status sent from the work machine, and “x” for other cases. A pattern is obtained, and this pattern is compared with each pattern in the failure diagnosis database. As a result, it is determined that the repair content is “A”, and a failure is estimated from the repair content. Here, the failure estimation unit 56 determines the repair content from the symptom of each part and the answer pattern. However, since the failure content and the repair content are front and back, if the repair content is known, naturally the failure content Can find out. For example, if the repair content is “controller replacement”, it goes without saying that the controller has failed. Therefore, the failure estimation unit 56 determines that the failure (estimated cause) It can be determined as “failure”.

  In the failure diagnosis support system 50 of the work machine 1, for example, the user displays the operation information of the work machine 1 as a QR code (registered trademark) on the display device 25, and the QR code (registered trademark) displayed on the display device 25. The rental company that rents the work machine 1 from the computer 52 of the rental company that reads the data in the QR code (registered trademark) by the camera-equipped mobile phone and transmits the data in the read QR code (registered trademark) to the mail server by e-mail. The operation information of the work machine 1 can be acquired by accessing the mail server and receiving the operation information electronic mail. Then, the rental company can automatically estimate the failure from the operation information by the failure estimation unit 56 of the computer 52, and can quickly notify the user or the like of the portion that seems to be a failure with the communication device 45 (mobile phone). In the above description, the rental company has been described as an example. However, the present invention is not limited to this, and the manufacturer may be a manufacturer that manufactures the work machine 1 or a repair company that specializes in repairing the work machine 1.

  According to the failure diagnosis support system of the present invention, the status transmission means 51 for transmitting the operation status of each part of the work machine 1 via the network, and the operation status is received and the failure of the work machine 1 is diagnosed from the operation status. A failure diagnosis unit 52 that performs repair, and a failure diagnosis database 53 that has a repair record. The failure diagnosis unit 52 includes a situation capture unit 55 that captures the operation status of each part of the work machine 1, and a situation capture unit 55. A failure estimation unit 56 that automatically estimates a failure based on the captured operation status and repair results of each part is provided.

According to this, only by transmitting the operation status in each part of the work machine 1 to the status transmission means 51, the operation status is captured by the status capturing unit 55, and the failure estimation unit 56 automatically estimates the failure. Can do. That is, the situation capturing unit 55 and the failure estimation unit 56 can quickly estimate the failure location of the work machine 1 without taking time and effort.
The failure estimation unit 56 estimates a failure by comparing the operation status of each part in the repair record with the operation status of each part captured by the status capturing unit 55. The status transmission means 51 is provided in the work machine 1 and converts the operation status of each part of the work machine 1 into an image and displays the image. The image displayed on the display device 25 is read and transmitted via the network. Communication equipment 45.

According to this, the user displays an image indicating the operation status of the work machine 1 on the display device 25, the image displayed on the display device 25 is read by the communication device 45, and the read image is broken through the network. A failure can be diagnosed from the operating state only by transmitting it to the diagnostic means 52.
The display device 25 converts one operation situation into one image data, converts a different operation situation different from the one operation situation into other image data, one image data and another image data And a display unit for displaying image data.

According to this, even if the data amount of the operation status of the work machine is enormous, the data (operation status) is displayed as a plurality of images by the display device 25, and each of the images is displayed by the communication device 45. It is possible to send without limitation of the data amount of the operation status.
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. The work machine 1 is not limited to a backhoe, but may be a tractor or a combine.

  The display device 25 may be any device that converts an operation state into an image, and is not limited to a device that converts a plurality of images. In the failure diagnosis support system 50, the operation information of the work machine 1 is transmitted using an electronic mail (electronic mail server 57), and then the operation information is transmitted to the failure diagnosis means (computer) 52 via the electronic mail server 57. However, the operation information may be uploaded directly from the mobile phone 45 or the like to the computer 52 without using the e-mail (e-mail server 57).

1 Work machine 52 Computer 55 Status acquisition unit 56 Failure estimation unit

Claims (5)

A transmission means for transmitting the operation status in each part of the work machine to the server by e-mail, and a computer accessible to the server,
The computer includes a status capturing unit that accesses the server and captures the operating status stored in the server, and a display unit that displays the operating status captured by the status capturing unit. System to capture the operating status of the working machine.   The work machine operation state capturing system according to claim 1, wherein the computer includes a failure estimation unit that automatically estimates a failure of the work machine based on the captured operation state. A communication device that transmits the operation status of each part of the work machine to the outside by e-mail; and
A server that receives an e-mail transmitted from the communication device and stores an operation status included in the received e-mail;
A computer capable of accessing the server and capturing the operational status stored in the server and displaying the captured operational status;
It is equipped with the operating condition taking-in system of the working machine characterized by the above-mentioned.   4. The work machine operation state capturing system according to claim 3, wherein the computer includes a failure estimation unit that automatically estimates a failure of the work machine based on the captured operation state.   A display device that is provided in the work machine and that converts and displays an operation state of each part of the work machine; and the communication device reads and reads the image displayed on the display device via a network 5. The work machine operation state capturing system according to claim 3, wherein the operation state capturing system is transmitted to the server.

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