JP4897152B2 - Construction machine failure diagnosis method and construction machine failure diagnosis system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a failure diagnosis method and the failure diagnosis system for diagnosing a failure of the construction machine sends a signal to and from the construction machine and the information management center such as a hydraulic excavator.
[0002]
[Prior art]
A system is known in which information (operation data) from a construction machine is transmitted to an information management center, and based on this operation data, the presence or absence of a failure is predicted at the center (for example, Japanese Patent Laid-Open No. 2000-259729). ). According to this, information predicted by the center is sent to a maintenance person, and the maintenance person performs maintenance work based on this information.
[0003]
[Problems to be solved by the invention]
However, in the system described in the above publication, information from the center is not sent directly to the operator who operates the work machine, so it takes time for the operator to grasp the failure location and cause of the work machine. . As a result, the operator may not be able to take appropriate measures when a failure occurs.
[0004]
An object of the present invention is to provide a construction machine failure diagnosis method and the failure diagnosis system that information such as fault location can be allowed to recognize the operator.
[0005]
[Means for Solving the Problems]
(1) The invention of claim 1 is a construction machine fault diagnosis method for performing fault diagnosis by transmitting and receiving signals to and from each other by means of communication devices provided respectively in the construction machine and the information management center. When the failure diagnosis mode is selected, the controller creates a list of failure statuses and displays the list on the display device of the construction machine, and the server of the information management center displays the failure selected by the operator from the failure status list. And receiving a list of faulty parts of the construction machine that may be the cause as a first command to the construction machine, and the controller of the construction machine creates a list of the faulty parts based on the first command. The server of the information management center receives the failure location selected by the operator from the failure location list and diagnoses the failure location. An operation instruction to transmit to the construction machine as a second command, the controller of the construction machine displays the operation instruction on the display device based on the second command, the controller of the construction machine , The detection value at the location operated by the operator based on the operation instruction is transmitted to the information management center, and the server of the information management center performs failure diagnosis based on the received detection value, and the result of the failure diagnosis is abnormal. If determined, the check location is transmitted to the construction machine as a third command, and the controller of the construction machine displays the check location on the display device based on the third command, and the information management The center server specifies a failure location based on information of an operator check result regarding the check location, and the controller of the construction machine A list of the specified failure location and desired service is created and displayed on the display device, and the server of the information management center confirms that the operator has selected an online service from the desired service list. When received, the cost and time for repairing the specified failure point are calculated and transmitted to the construction machine.
(2) The invention of claim 2 relates to a failure diagnosis system corresponding to the failure diagnosis method of claim 1, a construction machine having a display device, a communication device and a controller for controlling them, a communication device, and this communication An information management center having a server that controls the device, and the communication device sends and receives signals to and from each other between the construction machine and the information management center, and causes the display device to display information related to failure diagnosis. A fault diagnosis system for a construction machine that performs diagnosis, wherein the controller of the construction machine is provided with means for creating a list of fault conditions and displaying the fault status on a display device of the construction machine when the fault diagnosis mode is selected The server of the information management center receives the failure selected by the operator from the failure status list, and the construction that may cause the failure Means is provided for transmitting a list of defective parts of the machine to the construction machine as a first command, and the controller of the construction machine creates the list of defective parts based on the first command and displays the list Means for displaying on the apparatus is provided, and the server of the information management center transmits, to the construction machine, an operation instruction for diagnosing the fault location selected by the operator from the fault location list as a second command. The controller of the construction machine includes means for displaying the operation instruction on the display device based on the second command, and the information management for the detected value of the location operated by the operator based on the operation command. Means for transmitting to the center, and the server of the information management center performs failure diagnosis based on the received detection value, and the detection value is abnormal. In the case of disconnection, means for transmitting a check location to the construction machine as a third command is provided, and the controller of the construction machine displays the check location on the display device based on the third command. Means is provided, and the server of the information management center is provided with means for specifying a failure location based on information of an operator check result regarding the checker location, and the controller of the construction machine includes the specified failure. A means for creating a list of locations and desired services and displaying the list on the display device is provided, and the server of the information management center receives that the operator has selected an online service from the desired service list. Then, there is provided means for calculating the cost and time for repairing the specified failure location and transmitting the calculated cost and time to the construction machine. And said that you are.
(3) In the failure diagnosis method according to the invention of claim 3, when the failure location is specified and the operator selects an online service, the server of the information management center performs a serviceman to repair the specified failure location. The time to arrive at the site is calculated and transmitted to the construction machine.
(4) In the failure diagnosis system according to the invention of claim 4, when a failure point is specified and the operator selects an online service, the server of the information management center allows a serviceman to repair the specified failure point. It has a means for calculating the time of arrival at the site and transmitting it to the construction machine.
(5) The invention of claim 5 is a failure diagnosis method comprising the steps of specifying a failure location in the failure diagnosis method of claim 1.
(6) The invention of claim 6 is a failure diagnosis system corresponding to the failure diagnosis method of claim 5.
[0006]
In the section of the means for solving the above-described problems for explaining the configuration of the present invention, the drawings of the embodiments of the invention are used for easy understanding of the present invention. It is not limited.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
-First embodiment-
A first embodiment of a failure diagnosis system according to the present invention will be described with reference to FIGS.
FIG. 1 is a schematic configuration diagram of a failure diagnosis system according to the first embodiment, and FIG. 2 is a side view of a hydraulic excavator to which the failure determination system is applied. As shown in FIG. 2, the excavator 1 includes a traveling body 61, a revolving body 62 that is turnably mounted on the traveling body 61, a boom 63 </ b> A supported by the revolving body 62, an arm 63 </ b> B, and a bucket 63 </ b> C. A working device 63. The cab 64 is equipped with a control device 10 and a display device 11 such as a monitor. The control device 10 includes a controller 12 and a communication device 13, and an antenna 14 is connected to the communication device 13. A plurality of such hydraulic excavators 1 are provided on the ground, and exchange information with the center 3 via the communication satellite 2 as shown in FIG.
[0008]
The hydraulic excavator 1 is provided with a large number of sensors 15 that detect the engine speed, the pressure of the hydraulic pump, the pilot pressure by operating the operation lever, the load pressure acting on an actuator such as a hydraulic cylinder, and the like. A signal transmission command to the center 3 and an image display command to the display device 11 are input from the input unit 16 by an operator's key operation or the like. The alarm generator 17 issues an alarm based on the signal from the sensor 15 to notify the operator of the abnormality of the hydraulic excavator.
[0009]
Signals from the sensor 15, the input unit 16, and the communication device 13 are input to the controller 12 and stored in the memory 18. The controller 12 includes a display control unit 19 and a transmission control unit 20. The display control unit 19 controls the image of the display device 11 by using signals from the input unit 16 and the communication device 13, for example, as shown in FIG. The transmission control unit 12 creates transmission data based on the signal stored in the memory 18, and transmits this transmission data to the center 3 at a predetermined timing by a process (FIG. 3) described later.
[0010]
The transmission data created in this case is the ID data for identifying the model and number of the excavator 1, the operating date and operating time of the excavator 1, the contents of the alarm occurrence, and the output of each sensor for the engine speed. It includes the frequency distribution of values, the contents of parts replacement, and the contents of failure. The presence or absence of a failure is detected by an abnormal signal from the sensor 15. The contents of the failure include various things such as an abnormality in the output voltage of the sensor 15, an abnormality in the engine speed, an abnormality in the hydraulic pressure, an abnormality in the battery charge, an abnormality in the cooling water temperature, and the like. For example, a failure code “1” is transmitted when the boom angle sensor fails, a failure code “2” is transmitted when the arm angle sensor fails, and a failure code “3” is transmitted when the solenoid valve fails.
[0011]
This transmission data is received by the communication device 31 of the center 3 via the communication satellite 2, transferred to the management server 32 on the manufacturer side, and stored in the database 33. In the management server 32, the failure of the excavator 1 is grasped by a process (FIG. 4) described later, and predetermined information is transmitted to the excavator 1. In the database 33, transmission data from the excavator 1 is accumulated and stored for each model and number. Thereby, it is possible to grasp the total operation time of the excavator, the usage time of each component, and the like. Further, the database 33 stores a failure diagnosis procedure for identifying the failure location and the cause of the failure corresponding to the failure code.
[0012]
A user terminal 34 is connected to the center via a telephone line, for example. As a result, the user exchanges necessary information with the center 3. The user includes a service department or a dealer of the hydraulic excavator maker, and the failure information can be transmitted to the nearest service person.
[0013]
Here, a specific example of the information transmission / reception process will be described using the flowcharts shown in FIGS. 3 is a process executed by the transmission control unit 20, and FIG. 4 is a process executed by the server 32.
As shown in FIG. 3, first, input signals from the sensor 15, the input unit 16, and the communication device 13 are read in step S1, and the input signals are stored in the memory 18 in step S2. Next, in step S3, the presence / absence of a transmission command is determined. In this case, a transmission command is output every predetermined time from the start of work or by an operator's operation at the input unit 16. The transmission command may be output simultaneously with the end of the work or at a fixed time of the day (for example, at midnight). If step S3 is affirmed, the process proceeds to step S4, transmission data is created based on the data stored in the memory 18, the data is transmitted in step S5, and the process returns to step S1.
[0014]
Data transmitted from the communication device 13 is received by the communication device 31 of the center 3. As shown in FIG. 4, the server 32 reads the received data in step S11 and stores it in the database 33 in step S12. Next, in step S13, it is determined whether or not a failure has occurred based on the failure code. If the determination is affirmative, the process proceeds to step S14. If the determination is negative, the process returns to step S1. In step S14, the database 33 is accessed, and transmission data corresponding to the failure code and the received data is created. An example of the transmission data will be described later with reference to FIG. Next, transmission data is transmitted in step S15, and the process returns to step S11.
[0015]
Next, the characteristic operation of the failure determination apparatus according to the first embodiment will be described more specifically. Hereinafter, a case where the boom angle sensor outputs an abnormal signal will be described as an example.
FIG. 5 is a characteristic diagram of the boom angle sensor 15. During normal operation of the sensor 15, the output voltage varies between 0.5V and 4.5V depending on the boom angle. When the output voltage is 0.25 V or less or 4.75 V or more (shaded line), the controller 12 determines that the sensor output value is abnormal due to disconnection or short circuit. In this case, the sensor 15 itself, the harness, the power supply, the controller 12, and the like are conceivable as a failure location (failure cause). Therefore, failure diagnosis is performed as follows to identify the failure location.
[0016]
FIG. 6 is a diagram illustrating a specific procedure of signal transmission / reception exchanged between the hydraulic excavator 1 and the center 3. When the boom angle sensor 15 outputs an abnormal signal (step S21), the alarm generator 17 issues an alarm, and the display device 11 relates to the necessity of failure diagnosis as shown in the figure by a control signal from the image control unit 19. A question is displayed (step S22). In response to this question, when the operator selects “yes” by operating the input unit 16, the transmission data (failure data) is sent to the center 3 together with the failure code “1” by the above-described processing (step S3 → step S4 → step S5). Sent. Depending on the degree and content of the failure, failure data may be forcibly transmitted to the center 3 regardless of the operator's selection command.
[0017]
In the server 32, the database 33 is accessed by the above-described processing (step S 13 → step S 14 → step S 15), the failure diagnosis procedure corresponding to the failure code “1” is read, and the first command is transmitted to the excavator 1. (Step S23). By this signal, a continuity check command is displayed on the display device 11 as shown (step S24). The operator checks the continuity state of the harness connector according to the displayed information, and confirms whether or not the continuity state is normal. When an abnormality is selected by operating the input unit 16, the server 32 accesses the database 33, identifies the cause of the failure from the transmitted information, and returns it to the excavator 1 (step S25). As a result, information as shown in the figure is displayed on the display device 11 (step S26), and the operator recognizes that the cause of the failure of the sensor 15 is a defect in the harness.
[0018]
On the other hand, when normal is selected by operating the input unit 16 in step S24, the server 32 transmits a second command to the shovel 1 (step S27). With this signal, a resistance value measurement command is displayed on the display device 11 as shown (step S28). The operator measures the resistance value of the connector of the sensor 15 according to this information and confirms whether or not it is normal. When an abnormality is selected, the server 32 accesses the database 33 to identify the cause of the failure and returns it to the excavator 1 (step S29). As a result, information as shown in the figure is displayed on the display device 11 (step S30), and the operator recognizes that the sensor 15 itself is defective.
[0019]
When normal is selected in step S28, the server 32 accesses the database 33, identifies the cause of the failure based on the information so far, and returns it to the excavator 1 (step S31). In this case, the cause of the failure is determined to be a failure of the controller 12, and the information is displayed on the display device 11 as shown (step S32). As described above, when the boom angle sensor is abnormal, it is possible to identify the failure location.
[0020]
In the above description, the failure diagnosis of the boom angle sensor 15 has been described as an example. However, the failure diagnosis of the electromagnetic proportional valve can be similarly performed. In this case, for example, when the command value to the electromagnetic proportional valve driven by the electric lever is 1 MPa or less but the actual detection value is 3 MPa or more, it is determined that the electromagnetic proportional valve has failed, and the failure code “3” May be transmitted. Then, an operator may perform a harness continuity check or the like according to a command from the server 32.
[0021]
As described above, in the first embodiment, a signal is transmitted between the excavator 1 and the server 32 via the communication satellite 2 to display information related to the failure of the excavator 1 on the display device 11 in an interactive manner. Since it did in this way, the operator can recognize a failure location easily. As a result, the operator can take appropriate measures after the failure. Further, since the failure diagnosis is started by the output of the abnormal signal of the sensor 15, the failure diagnosis can be performed at an appropriate timing. Furthermore, since the server 32 accesses the database 33 to identify the failure location, it is not necessary to store a large amount of data on the shovel side, and the storage capacity can be saved. Furthermore, since the failure data is coded, the data structure is easy.
[0022]
-Second Embodiment-
A second embodiment of the present invention will be described with reference to FIGS.
In the first embodiment, when the sensor 15 fails, the image on the display device 11 is automatically switched to enter the failure diagnosis mode. However, in the second embodiment, the failure is caused by the operator's menu selection operation. Configure to enter diagnostic mode. Hereinafter, differences from the first embodiment will be mainly described.
[0023]
The second embodiment differs from the first embodiment in the specific procedure of signal transmission / reception exchanged between the excavator 1 and the center 3. If any trouble occurs when the excavator 1 is driven, the operator selects the failure diagnosis mode by operating the input unit 16. Thereby, for example, an initial screen as shown in FIG. 7 is displayed on the display device 11 (step S41). Here, “Front does not move” is selected from the display screen. A procedure corresponding to the selection signal is stored in the database 33 in advance, and the server 32 reads the procedure corresponding to the selection signal from the database 33 and transmits the first command to the excavator 1 (step S42). As a result, a question as shown in the figure is displayed on the display device 11 (step S43).
[0024]
When “Boom Raising” is selected for this question, the server 32 transmits a second command corresponding to the selection signal (step S44), and the command as shown in the figure is displayed on the display device 11 (step S45). . When the operator performs a boom raising operation based on this command, the detected values of the pump pressure and pilot pressure at that time are transmitted to the server 32. The server 32 determines whether or not the transmitted detection value is normal (step S46), and transmits a third command if it is abnormal, that is, if the detection value is significantly smaller than the set value. Thereby, a command as shown in the figure is displayed on the display device 11 (step S48). When the operator checks the harness based on this command and selects normal, the server 32 identifies the failure location based on the information so far (step S49). As a result, the failure location and the service contact information are displayed together on the display device 11 as shown (step S50).
[0025]
On the other hand, if it is determined in step S46 that the detected values of the pump pressure and pilot pressure are normal, the server 32 transmits a fourth command (step S51), and the command as shown in the figure is displayed on the display device 11. (Step S52). If the operator checks for oil leakage based on this command and selects normal, the server 32 identifies the failure location based on the information so far (step S53). As a result, the failure location and the service contact information are displayed together on the display device 11 (step S54).
[0026]
In step S50 and step S54 described above, the failure location and the service contact information are displayed. Instead, for example, as shown in FIG. 8, the service may be contacted in a question format. In FIG. 8, for example, when a failure location is specified as an electromagnetic valve, information as shown in the figure is displayed on the display device 11 (step S55). Here, when “contact online” is selected, the server 32 accesses the database 33, and calculates the part cost of the solenoid valve, the standard work time, and the repair cost determined from the part cost (step S56A).
[0027]
In this case, the service person inputs in advance a daily schedule using his / her personal computer or the like, and this information is transmitted to the center 3 and stored in the database 33. Further, the excavator 1 is equipped with a position measuring machine such as GPS, and the position information of the excavator 1 is transmitted to the center 3 in real time. As a result, the server 32 identifies the service department closest to the site and the service person who can go to the site first of all, and informs the service person about the service request through or without the service department. Send. The service person responds to the server 32 whether or not the service is possible for this information and the arrival time at the site (step S56B).
[0028]
The information obtained in steps S56A and S56B is transmitted to the excavator 1, and information as shown in the figure is displayed on the display device 11 (step S57). As a result, the operator confirms the working time, cost, etc., and determines whether or not to request a repair. When “yes” (perform repair request) is selected in step S57, the command is transmitted to the service person via the center, and the service person is dispatched to the site (step S58).
[0029]
As described above, in the second embodiment, since the failure diagnosis mode is selected by the operator's menu operation, it is possible to identify the defective part at any time according to the operator's request. In this case, a service request can be made by an operator's selection operation in an interactive format, and the troublesome troublesome repair request can be saved. In addition, information such as parts cost, repair time and arrival time of service personnel can be immediately grasped, which is efficient and easy to use.
[0030]
In the above embodiment, the operator is notified of information related to the failure of the hydraulic excavator 1 by the display device 11, but may be notified by voice or the like. In FIGS. 6 to 8, the signal is alternately transmitted a plurality of times between the excavator 1 and the center 3, but it may be transmitted once. Although the said embodiment was applied to the hydraulic excavator, you may make it apply to another construction machine.
[0032]
【Effect of the invention】
As described above in detail, according to the present invention, failure diagnosis is performed efficiently by exchanging information for failure diagnosis between the construction machine and the information management center. In addition, after identifying the failure location, the information management center calculates the cost and time required to service the failure location or the arrival time of the service person at the site, and notifies the operator of this. Information regarding requests can be immediately grasped, which is efficient and easy to use.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a failure diagnosis system according to an embodiment.
FIG. 2 is a side view of a hydraulic excavator to which the failure diagnosis system according to the present embodiment is applied.
FIG. 3 is a flowchart showing an example of information transmission / reception processing in the controller of the hydraulic excavator according to the present embodiment.
FIG. 4 is a flowchart showing an example of information transmission / reception processing in the center server according to the embodiment;
FIG. 5 is a characteristic diagram of a boom angle sensor.
FIG. 6 is a flowchart showing a specific procedure for signal transmission / reception by the failure diagnosis system according to the first embodiment;
FIG. 7 is a flowchart showing a specific procedure of signal transmission / reception by the failure diagnosis system according to the second embodiment.
FIG. 8 is a flowchart showing a modification of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 2 Communication satellite 3 Center 10 Control apparatus 11 Display apparatus 12 Controller 13 Communication apparatus 14 Antenna 15 Sensor 16 Input part 19 Display control part 20 Transmission control part 31 Communication apparatus 32 Management server 33 Database

Claims (6)

A construction machine failure diagnosis method for performing failure diagnosis by transmitting and receiving signals to and from each other by means of communication devices provided respectively in the construction machine and the information management center,
When the failure diagnosis mode is selected, the controller of the construction machine creates a list of fault conditions and displays the list on the display device of the construction machine,
The server of the information management center receives the failure selected by the operator from the failure status list, and transmits a list of failure points of the construction machine that may be the cause to the construction machine as a first command,
The controller of the construction machine creates a list of the trouble spots based on the first command and displays the list on the display device,
The server of the information management center receives the failure location selected by the operator from the list of failure locations, and transmits an operation instruction for diagnosing the failure location to the construction machine as a second command,
The controller of the construction machine displays the operation instruction on the display device based on the second command,
The controller of the construction machine transmits a detection value at a location operated by an operator based on the operation instruction to the information management center,
The server of the information management center performs a failure diagnosis based on the received detection value, and if the result of the failure diagnosis is determined to be abnormal, sends a check location to the construction machine as a third command)),
The controller of the construction machine causes the display device to display the check location based on the third command,
The server of the information management center identifies a failure location based on information of an operator check result regarding the check location,
The controller of the construction machine creates a list of the specified failure location and desired service and causes the display device to display the list,
When the server of the information management center receives that the operator has selected an online service from the list of desired services, it calculates the cost and time for repairing the specified failure location and sends them to the construction machine A fault diagnosis method for a construction machine, characterized by:   A construction machine having a display device, a communication device and a controller for controlling the communication device, and an information management center having a communication device and a server for controlling the communication device, the communication between the construction machine and the information management center. A fault diagnosis system for a construction machine that performs a fault diagnosis while transmitting and receiving signals to and from each other and displaying information on the fault diagnosis on the display device,
When the failure diagnosis mode is selected, the controller of the construction machine is provided with means for creating a list of fault conditions and displaying the list on the display device of the construction machine,
The server of the information management center is provided with means for receiving a failure selected by the operator from the failure status list and transmitting a list of failure locations of the construction machine that can be the cause thereof to the construction machine as a first command. And
The controller of the construction machine is provided with means for creating a list of the defective portions based on the first command and displaying the list on the display device,
The server of the information management center is provided with a means for transmitting an operation instruction for diagnosing a fault location selected by an operator from the fault location list as a second command to the construction machine,
The controller of the construction machine transmits to the information management center a means for displaying the operation instruction on the display device based on the second command, and a detected value of a location operated by the operator based on the operation command. Means are provided,
The server of the information management center is provided with means for performing a failure diagnosis based on the received detection value and transmitting the check location to the construction machine as a third command when the detection value is diagnosed as abnormal. And
The controller of the construction machine is provided with means for displaying the check location on the display device based on the third command,
The information management center server is provided with means for identifying a failure location based on information of an operator check result regarding the checker location,
The construction machine controller is provided with means for creating a list of the specified failure location and desired service and displaying the list on the display device,
When the server of the information management center receives that the operator has selected an online service from the list of desired services, it calculates the cost and time for repairing the specified failure location and sends it to the construction machine. A fault diagnosis system for a construction machine, characterized in that means for transmitting is provided. A construction machine failure diagnosis method for performing failure diagnosis by transmitting and receiving signals to and from each other by means of communication devices provided respectively in the construction machine and the information management center,
When the failure diagnosis mode is selected, the controller of the construction machine creates a list of fault conditions and displays the list on the display device of the construction machine,
The server of the information management center receives the failure selected by the operator from the failure status list, and transmits a list of failure points of the construction machine that may be the cause to the construction machine as a first command,
The controller of the construction machine creates a list of the trouble spots based on the first command and displays the list on the display device,
The server of the information management center receives the failure location selected by the operator from the list of failure locations, and transmits an operation instruction for diagnosing the failure location to the construction machine as a second command,
The controller of the construction machine displays the operation instruction on the display device based on the second command,
The controller of the construction machine transmits a detection value at a location operated by an operator based on the operation instruction to the information management center,
The server of the information management center performs a failure diagnosis based on the received detection value, and when the result of the failure diagnosis is determined to be abnormal, transmits a check location to the construction machine as a third command,
The controller of the construction machine causes the display device to display the check location based on the third command,
The server of the information management center identifies a failure location based on information of an operator check result regarding the check location,
The controller of the construction machine creates a list of the specified failure location and desired service and causes the display device to display the list,
When the server of the information management center receives that the operator has selected an online service from the list of services, the server calculates the time for a serviceman to arrive at the site for repair of the specified failure location. A construction machine failure diagnosis method comprising: transmitting to the construction machine. A construction machine having a display device, a communication device and a controller for controlling the communication device, and an information management center having a communication device and a server for controlling the communication device, the communication between the construction machine and the information management center. A fault diagnosis system for a construction machine that performs a fault diagnosis while transmitting and receiving signals to and from each other and displaying information on the fault diagnosis on the display device,
When the failure diagnosis mode is selected, the controller of the construction machine is provided with means for creating a list of fault conditions and displaying the list on the display device of the construction machine,
The server of the information management center is provided with means for receiving a failure selected by the operator from the failure status list and transmitting a list of failure locations of the construction machine that can be the cause thereof to the construction machine as a first command. And
The controller of the construction machine is provided with means for creating a list of the defective portions based on the first command and displaying the list on the display device,
The server of the information management center is provided with a means for transmitting an operation instruction for diagnosing a fault location selected by an operator from the fault location list as a second command to the construction machine,
The controller of the construction machine transmits to the information management center a means for displaying the operation instruction on the display device based on the second command, and a detected value of a location operated by the operator based on the operation command. Means are provided,
The server of the information management center is provided with means for performing a failure diagnosis based on the received detection value and transmitting the check location to the construction machine as a third command when the detection value is diagnosed as abnormal. And
The controller of the construction machine is provided with means for displaying the check location on the display device based on the third command,
The information management center server is provided with means for identifying a failure location based on information of an operator check result regarding the checker location,
The construction machine controller is provided with means for creating a list of the specified failure location and desired service and displaying the list on the display device,
When the server of the information management center receives that the operator has selected an online service from the list of services, it calculates the time for a serviceman to arrive at the site in order to repair the specified failure location. And a means for transmitting to the construction machine is provided. A construction machine failure diagnosis method for performing failure diagnosis by transmitting and receiving signals to and from each other by means of communication devices provided respectively in the construction machine and the information management center,
When the failure diagnosis mode is selected, the controller of the construction machine creates a list of fault conditions and displays the list on the display device of the construction machine,
The server of the information management center receives the failure selected by the operator from the failure status list, and transmits a list of failure points of the construction machine that may be the cause to the construction machine as a first command,
The controller of the construction machine creates a list of the trouble spots based on the first command and displays the list on the display device,
The server of the information management center receives the failure location selected by the operator from the list of failure locations, and transmits an operation instruction for diagnosing the failure location to the construction machine as a second command,
The controller of the construction machine displays the operation instruction on the display device based on the second command,
The controller of the construction machine transmits a detection value at a location operated by an operator based on the operation instruction to the information management center,
The server of the information management center performs a failure diagnosis based on the received detection value, and when the result of the failure diagnosis is determined to be abnormal, transmits a check location to the construction machine as a third command,
The controller of the construction machine causes the display device to display the check location based on the third command,
The server of the information management center identifies a failure location based on information of an operator check result relating to the check location, a failure diagnosis method for a construction machine,   A construction machine having a display device, a communication device and a controller for controlling the communication device, and an information management center having a communication device and a server for controlling the communication device, the communication between the construction machine and the information management center. A fault diagnosis system for a construction machine that performs a fault diagnosis while transmitting and receiving signals to and from each other and displaying information on the fault diagnosis on the display device,
When the failure diagnosis mode is selected, the controller of the construction machine is provided with means for creating a list of fault conditions and displaying the list on the display device of the construction machine,
The server of the information management center is provided with means for receiving a failure selected by the operator from the failure status list and transmitting a list of failure locations of the construction machine that can be the cause thereof to the construction machine as a first command. And
The controller of the construction machine is provided with means for creating a list of the defective portions based on the first command and displaying the list on the display device,
The server of the information management center is provided with a means for transmitting an operation instruction for diagnosing a fault location selected by an operator from the fault location list as a second command to the construction machine,
The controller of the construction machine transmits to the information management center a means for displaying the operation instruction on the display device based on the second command, and a detected value of a location operated by the operator based on the operation command. Means are provided,
The server of the information management center is provided with means for performing a failure diagnosis based on the received detection value and transmitting the check location to the construction machine as a third command when the detection value is diagnosed as abnormal. And
The controller of the construction machine is provided with means for displaying the check location on the display device based on the third command,
A fault diagnosis system for a construction machine, characterized in that the server of the information management center is provided with means for identifying a fault location based on information of an operator check result regarding the checker location.

Images