JP2021143509A - Work machine - Google Patents

Abstract

To improve efficiency of preparatory work before maintenance work of a work machine.SOLUTION: A work machine includes a control device for controlling equipment mounted on the work machine. A control device includes: a first controller for acquiring detection information detected by a sensor mounted on the work machine, for determining whether or not the equipment has failed based on the detection information, and for outputting the determination result and the detection information as information regarding maintenance of the work machine; a second controller for accumulating and storing the information regarding the maintenance outputted from the first controller; and a communication controller for converting the information regarding the maintenance accumulated in the second controller into a format that can be displayed on external equipment, and for wirelessly transmitting the converted information to the external equipment via a communication antenna.SELECTED DRAWING: Figure 5

Description

The present invention relates to a working machine.

In a work machine such as a hydraulic excavator, a management device for transmitting detection information or the like detected by a sensor of the work machine to a mobile terminal is known. Patent Document 1 temporarily stores detection information including an operation input amount detected by an input amount detection unit and a physical quantity detected by a plurality of sensors, and when an abnormality occurrence is determined at the first time. , A shovel management device that stores detection information between a second time before that time and at least the first time as abnormal information and transmits the information to a mobile terminal is described.

The mobile terminal described in Patent Document 1 starts the diagnostic application software, refers to a reference table in which check items corresponding to abnormal contents are stored in a predetermined order, and displays information on those check items in order. The service person who performs the maintenance work can identify the cause of the abnormality by looking at the abnormality information displayed on the mobile terminal.

Japanese Unexamined Patent Publication No. 2017-108429

When the diagnostic application software is started by the service staff, the mobile terminal converts the information acquired from the work machine into a display format and displays it on the display screen. The service staff performs maintenance work on the work machine based on the information displayed on the display screen of the mobile terminal. However, since the specifications of the equipment mounted on the work machine are different depending on the model of the work machine, the items to be maintained differ depending on the model of the work machine. Therefore, in the technique described in Patent Document 1, it is necessary to install dedicated diagnostic application software according to the model of the work machine on the mobile terminal, and there is a problem that it takes time and effort to prepare for maintenance work. ..

An object of the present invention is to improve the efficiency of preparatory work before maintenance work of a work machine.

The work machine according to one aspect of the present invention includes a control device for controlling the equipment mounted on the work machine. The control device acquires the detection information detected by the sensor mounted on the work machine, determines whether or not the device is out of order based on the detection information, and uses the determination result and the detection information for maintenance of the work machine. The first controller that outputs information about maintenance, the second controller that stores and stores the maintenance information output from the first controller, and the maintenance information stored in the second controller are converted into a format that can be displayed by an external device. It also has a communication controller that wirelessly transmits the converted information to an external device via a communication antenna.

According to the present invention, it is possible to improve the efficiency of the preparatory work before the maintenance work of the work machine.

The figure which shows the structure of the maintenance system of a work machine. The figure which shows the hydraulic system and the control device mounted on a work machine. Functional block diagram of the control device. A flowchart showing the contents of the authentication process by the communication controller. A flowchart showing the contents of the main processing by the communication controller after the start image is displayed on the display unit of the mobile terminal. The figure which shows an example of the start image displayed on the Web browser of the display part of a mobile terminal. The figure which shows an example of the failure diagnosis image displayed on the Web browser of the display part of a mobile terminal. The figure which shows an example of the monitoring image displayed on the Web browser of the display part of a mobile terminal. The figure which shows an example of the parameter change image displayed on the Web browser of the display part of a mobile terminal. The figure which shows an example of the communication method change image displayed on the Web browser of the display part of a mobile terminal.

The maintenance system according to the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of a maintenance system 10 of a work machine 100. As shown in FIG. 1, the maintenance system 10 works on-site with a management server 41 installed in the management center 40, a mobile terminal 51 used by service personnel, and an in-house computer 44 installed in the manufacturer's company. Includes a working machine 100 such as a hydraulic excavator to perform.

The work machine 100 is shipped from the factory of the manufacturer (manufacturer) of the work machine 100 and operates at the work site (construction site). The work machine 100 performs work such as civil engineering work, construction work, demolition work, and dredging work at the work site. Although FIG. 1 shows only one work machine 100 for the sake of simplification of the drawing, there are cases where a plurality of work machines 100 are operating at the work site.

The work machine 100 includes a traveling body 11 and a swivel body 12 provided on the traveling body 11 so as to be swivelable. The traveling body 11 travels by driving a pair of left and right crawlers with a traveling motor. The swivel body 12 swivels by driving a swivel motor. A driver's cab 17 is provided on the left side of the front portion of the rotating body 12, and an engine chamber 18 is provided on the rear side of the driver's cab 17. The engine chamber 18 houses the engine 29 (see FIG. 2), which is a power source, and hydraulic equipment and the like. A counterweight 19 for balancing the machine body during work is attached to the rear part of the engine chamber 18. A front working device 13 is provided at the front portion of the swivel body 12.

The front work device 13 is an articulated work device having a plurality of front members rotatably connected to each other. In the present embodiment, the boom 14, the arm 15, and the bucket 16 are connected in series as the three front members. The base end portion of the boom 14 is rotatably connected to the front portion of the frame of the swivel body 12. The base end of the arm 15 is rotatably connected to the tip of the boom 14. The bucket 16 is rotatably connected to the tip of the arm 15. The boom 14 rotates with respect to the swivel body 12 by expanding and contracting the boom cylinder 14a. The arm 15 rotates with respect to the boom 14 by expanding and contracting the arm cylinder 15a. The bucket 16 rotates with respect to the arm 15 by expanding and contracting the bucket cylinder 16a.

The management center 40, which is also called a base station, includes a management server 41. The management center 40 is installed at a position away from the work machine 100, for example, at the head office, branch office, factory, or the like of the manufacturer of the work machine 100. The management server 41 of the management center 40 is an in-house computer 44 and a mobile terminal via a communication line 20 such as a dedicated line, a public line, an Internet line, an optical line, a telephone line, a wired line, a wireless line, a satellite line, and a mobile line. It is connected to 51.

The in-house computer 44 is a computer installed in the manufacturer's company, such as the manufacturer's head office, branch office, factory, or branch office. The in-house computer 44 is, for example, the designer of the work machine 100, more specifically, the vehicle body control controller 110 (see FIGS. 2 and 3) of the work machine 100, the information controller 120 (see FIGS. 2 and 3), and communication. It is used by the designer (control designer) of the control program incorporated in the controller 151 (see FIGS. 2 and 3). When the designer creates an updated version (update program) of the control program, the designer sends the update program to the management server 41 using the in-house computer 44 and stores it in the storage device 41a of the management server 41.

The mobile terminal 51 is used, for example, by a service worker (maintenance worker, maintenance person) who maintains the work machine 100 at the work site. In the present embodiment, as an example, an example in which the mobile terminal 51 is a smartphone having a display unit (touch panel type display) 51d having a touch panel function capable of input operation by fingers or the like and a wireless communication device will be described. .. That is, the display unit 51d also functions as an input unit for inputting an operation from the service staff. The mobile terminal 51 is connected to the work machine 100 via the communication line 20. More specifically, the mobile terminal 51 can be connected (communicated) with the work machine 100 via a wireless line such as a mobile communication line or a satellite communication line. The mobile terminal 51 has a size that can be carried by a service worker, can receive at least the display unit, the input unit, and the information to be displayed on the display unit, and can transmit the information input to the input unit. Any device may be provided with a wireless communication device. Therefore, the mobile terminal 51 is not limited to a smartphone, but may be a mobile phone, a tablet PC, a notebook PC, or the like.

The management server 41 is connected to the work machine 100 via the communication line 20. More specifically, the management server 41 can be connected (communicated) with the work machine 100 via a wireless line such as a mobile communication line or a satellite communication line. When the update program of the vehicle body control controller 110, the information controller 120, the communication controller 151, etc. is registered in the management server 41, that is, when the update version of the control program is stored and registered in the storage device 41a of the management server 41, The updated version (update program) is transmitted to the work machine 100.

FIG. 2 is a diagram showing a hydraulic system 30 and a control device 101 mounted on the work machine 100. In the following, a traveling motor (hydraulic motor), a swivel motor (hydraulic motor), a boom cylinder (hydraulic cylinder) 14a, an arm cylinder (hydraulic cylinder) 15a, a bucket cylinder (hydraulic cylinder) 16a, etc. mounted on the work machine 100, etc. Are collectively referred to as a hydraulic actuator 37. The hydraulic system 30 is provided with a plurality of hydraulic actuators 37, and FIG. 2 shows one hydraulic actuator 37 as a representative. Further, an operating device 34 for operating the hydraulic actuator 37 and a control valve 35 driven in response to the operation of the operating device 34 are provided for each of the plurality of hydraulic actuators 37, but in FIG. 2, one operating device is represented. 34 and the control valve 35 are illustrated.

The hydraulic system 30 controls the flow of the hydraulic oil from the main pump 31 and the pilot pump 32, the hydraulic actuator 37 driven by the hydraulic oil as the hydraulic fluid discharged from the main pump 31, and the hydraulic actuator 37 from the main pump 31. A control valve 35 and a control valve 35 are provided. The main pump 31 and the pilot pump 32 are connected to the engine 29 and driven by the engine 29 to discharge hydraulic oil (pressure oil). The main pump 31 is a variable displacement hydraulic pump, and the pilot pump 32 is a fixed displacement hydraulic pump. The engine 29 is a power source for the work machine 100, and is composed of, for example, an internal combustion engine such as a diesel engine.

The hydraulic oil discharged from the pilot pump 32 is supplied to the operating device 34. The operating device 34 includes a pair of hydraulic pilot type pressure reducing valves. The operating device 34 uses the discharge pressure of the pilot pump 32 as the original pressure to generate a pilot pressure (sometimes referred to as an operating pressure) according to the operating amount and operating direction of the operating lever 34a operated by the operator. The pilot pressure generated in this way is guided to the pressure receiving chambers 35a and 35b of the control valve 35 corresponding to the hydraulic actuator 37, and is used as a control signal for driving the control valve 35.

The hydraulic oil discharged from the main pump 31 is supplied to the hydraulic actuator (hydraulic cylinder, hydraulic motor) 37 through the control valve 35, and each of the front working device 13, the swivel body 12, and the traveling body 11 is driven.

The operation device 34 has an operation lever 34a provided in the driver's cab 17 and operated by an operator seated in the driver's seat. The pilot line connecting the operating device 34 and the pressure receiving chambers 35a and 35b of the control valve 35 is provided with operating pressure sensors 37a and 37b for detecting the operating pressure generated by the operation of the operating lever 34a by the operator. The operating pressure sensors 37a and 37b are connected to the vehicle body control controller 110, and output information regarding the detected operating pressure to the vehicle body control controller 110.

In the present embodiment, the operating pressure generated by the operating device 34 is reduced in response to the control signal from the vehicle body control controller 110 to the pilot line connecting the operating device 34 and the pressure receiving chambers 35a and 35b of the control valve 35. An electromagnetic proportional valve 36b for outputting to the pressure receiving chamber 35b is provided. For example, when the hydraulic actuator 37 is the boom cylinder 14a, the electromagnetic proportional valve 36b is provided on the pilot line that generates the operating pressure as the boom lowering operation signal, so that when the boom lowering operation is performed, the excavation target surface is used. It is also possible to perform stop control to prevent the bucket from entering below. In the stop control, the vehicle body control controller 110 controls the electromagnetic proportional valve 36b so that the boom lowering operation is gradually decelerated as the tip of the bucket 16 approaches the excavation target surface during the boom lowering operation.

The work machine 100 is provided with a pair of GNSS (Global Navigation Satellite System) antennas 60 as position sensors for detecting the position of the swivel body 12 in the global coordinate system. Further, the work machine 100 is provided with a plurality of angle sensors 61 as posture sensors for detecting information on the posture of the front work device 13. The plurality of angle sensors 61 include an angle sensor provided on the swivel body 12 for detecting the tilt angle of the swivel body 12 with respect to a reference surface (for example, a horizontal plane), and detecting the tilt angle (rotation angle) of the boom 14 with respect to the swivel body 12. There are an angle sensor, an angle sensor that detects the tilt angle of the arm 15 with respect to the boom 14, and an angle sensor that detects the tilt angle of the bucket 16 with respect to the arm 15. Information about the angle detected by each angle sensor 61 is output to the vehicle body control controller 110.

The work machine 100 includes a vehicle body control controller 110, an information controller 120, an engine controller 130, a display device 140, and a communication device 150. The communication device 150 includes a communication controller 151 and a communication antenna 150a. The control device 101 according to the present embodiment includes a vehicle body control controller 110, an information controller 120, and a communication controller 151.

Each controller 110, 120, 130, 151 includes a CPU (Central Processing Unit) as an operating circuit, ROM (Read Only Memory) and RAM (Random Access Memory) as storage devices 110a, 120a, 130a, 151a, and an input / output interface. It consists of a (I / O interface) and a microcomputer equipped with other peripheral circuits. Each controller 110, 120, 130, 151 may be configured by one microcomputer or may be configured by a plurality of microcomputers. Further, another controller may have some or all of the functions of the controllers 110, 120, 130, and 151. The storage devices 110a, 120a, 130a, 151a of the controllers 110, 120, 130, 151 store programs capable of executing various operations. That is, the storage devices 110a, 120a, 130a, 151a of the controllers 110, 120, 130, 151 are storage media that can read the program that realizes the function of the present embodiment.

The vehicle body control controller 110 controls the operation of the work machine 100. The vehicle body control controller 110 controls the operation of various devices mounted on the work machine 100, for example, hydraulic devices such as the main pump 31, the electromagnetic proportional valve 36b, and the electromagnetic switching valve. Further, the vehicle body control controller 110 manages the information controller 120 and the engine controller 130 in an integrated manner. The vehicle body control controller 110 also controls the operation of the engine 29 mounted on the work machine 100 via the engine controller 130.

The storage device 110a stores (stores, saves) a control program and control parameters for controlling various devices to be controlled (main pump 31, electromagnetic proportional valve 36b, etc.). The control program is, for example, one in which commands to the device to be controlled are ordered (processing procedure, operation procedure). The control parameters are, for example, those corresponding to the relationship (characteristics) of the output with respect to the input (numerical values, characteristics that determine the operation) such as maps, functions, calculation formulas, etc. used when performing control processing according to the control program. The vehicle body control controller 110 reads the control program and control parameters of the storage device 110a. The vehicle body control controller 110 controls various devices mounted on the work machine 100 by executing processing based on the read control program and control parameters.

As an example of control by the vehicle body control controller 110, stop control at the time of boom lowering operation will be described. The vehicle body control controller 110 calculates the position of the tip end portion of the bucket 16 in the local coordinate system based on the information input from the plurality of angle sensors 61 and the dimensions of each portion of the work machine 100 stored in the storage device 110a. The vehicle body control controller 110 calculates the position of the swivel body 12 in the global coordinate system from the signal of the GNSS antenna 60, converts the local coordinates into the global coordinates, and calculates the position of the tip of the bucket 16 in the global coordinate system. The vehicle body control controller 110 calculates the distance between the tip end portion of the bucket 16 and the target surface based on the target surface of the global coordinate system stored in the storage device 110a and the position of the tip end portion of the bucket 16. The vehicle body control controller 110 controls the electromagnetic proportional valve 36b so that the operating speed in the boom lowering direction decreases as the calculated distance becomes shorter. Information about the target surface is input to the vehicle body control controller 110 by an external device or the like and stored in the storage device 110a.

The information controller 120 collects (acquires) vehicle body information of the work machine 100. Further, the information controller 120 controls a display device 140, which is a device mounted on the work machine 100. The information controller 120 is communicably connected to other controllers, for example, the vehicle body control controller 110 and the engine controller 130, via an in-vehicle network 21 called a CAN (Controller Area Network). The in-vehicle network 21 may use a communication standard other than CAN, for example, Ethernet (registered trademark).

The information controller 120 acquires the operation data of the vehicle body control controller 110 and the engine controller 130 and stores them in the storage device 120a. For example, the information controller 120 has the rotation speed of the engine 29 (engine rotation speed), the pressure of the hydraulic actuators (for example, the hydraulic cylinders 14a, 15a, 16a), the discharge pressure of the main pump 31, and the operation pressure of the operation device 34 (operation). Various vehicle body information (vehicle body data) such as the amount) and the temperature of the hydraulic oil are input from the vehicle body control controller 110 and the engine controller 130. The information controller 120 stores the various input information (data) in the storage device 120a in association with, for example, the date and time.

The information controller 120 is connected to a display device 140 that displays information to the operator. The information controller 120 displays the collected information (vehicle body information stored in the storage device 120a) on the display device 140. The display device 140 is provided in the driver's cab 17 and displays information to be notified such as vehicle body information to the operator who operates the work machine 100. The display device 140 displays, for example, information such as various state quantities such as engine speed, remaining fuel amount, and remaining amount of oil, malfunction information of various devices including the engine 29 and hydraulic devices, and warning information.

The information controller 120 is connected to a communication device 150 that performs wireless communication via the communication antenna 150a. The information controller 120 outputs, for example, the collected information (vehicle body information stored in the storage device 120a) to the communication device 150. The communication controller 151 of the communication device 150 uses the input vehicle body information together with the machine information of the work machine 100 (information for identifying the machine such as model, model, machine number, identification number, etc.) and the management server 41 of the management center 40. Periodically send (output) to. The information transmitted from the communication device 150 is stored in the storage device 41a in the management server 41. The vehicle body information stored in the management server 41 can be read out by the in-house computer 44 via the communication line 20. That is, the operating status of the work machine 100 can be confirmed using the in-house computer 44.

Each controller 110, 120, 151 receives the update program registered in the management server 41 via the communication line 20, and receives the control program stored in the storage devices 110a, 120a, 151a for the received update. Can be updated to the program of.

The engine controller 130 controls the engine speed by adjusting the injection amount of fuel injected into the cylinder of the engine 29 by a fuel injection device (not shown). That is, the engine 29 is controlled by the engine controller 130 so as to rotate at a predetermined rotation speed.

A rotation speed sensor 29a is attached to the engine 29, and a detection signal of the rotation speed sensor 29a is input to the engine controller 130. Further, the target rotation speed is input from the vehicle body control controller 110 to the engine controller 130. The engine controller 130 injects fuel so as to match the rotation speed of the engine 29 with the target rotation speed based on the rotation speed of the engine 29 calculated from the detection signal of the rotation speed sensor 29a and the target rotation speed input from the vehicle body control controller 110. Control the device.

In the driver's cab 17, an engine control dial 62 is provided as an engine rotation speed setting device for setting a target rotation speed of the engine 29. The operation signal of the engine control dial 62 is input to the vehicle body control controller 110. The target rotation speed of the engine 29 can be adjusted by the operator by operating the engine control dial 62.

The work machine 100 is configured to be able to execute auto idle control. The vehicle body control controller 110 targets an auto idle rotation speed lower than the target rotation speed set by the engine control dial 62 when a predetermined time elapses after the operation levers 34a of all the operation devices 34 are in the non-operation state. It is output to the engine controller 130 as the number of revolutions. The auto idle rotation speed is a rotation speed that is quiet during the waiting time and can be quickly restored when the work is resumed, and is stored in the storage device 110a in advance. As a result, the rotation speed of the engine 29 is automatically reduced after a lapse of a predetermined time after the operator interrupts the work, so that noise is reduced and fuel efficiency is improved. When the operator operates the operation lever 34a of the operation device 34 to resume the work, the vehicle body control controller 110 outputs the rotation speed set by the engine control dial 62 to the engine controller 130 as the target rotation speed. Whether or not the operator is operating the operation lever 34a of the operation device 34 can be determined based on the detection results of the operation pressure sensors 37a and 37b.

The function of the control device 101 for controlling the work machine 100 will be described with reference to FIG. FIG. 3 is a functional block diagram of the control device 101.

The control device 101 acquires information related to the maintenance of the work machine 100, converts the acquired information into a format that can be displayed on the mobile terminal (external device) 51, and carries the converted information (data) via the communication antenna 150a. Wireless transmission to the terminal (external device) 51.

By executing the program stored in the storage device 151a, the communication controller 151 executes the communication unit 158, the connection authentication unit 152, the change instruction receiving unit 153, the communication method switching unit 154, the vehicle body information conversion unit 155, and the image switching unit. It functions as 157 and a display image generation unit 159.

The vehicle body control controller 110 functions as a vehicle body control execution unit 112, a failure determination unit 115, and a detection information acquisition unit 116 by executing a program stored in the storage device 110a. The control parameter table 111 is stored in the storage device 110a of the vehicle body control controller 110. The control parameter table 111 is a data table in which the name and identifier of the device to be controlled and the control parameters used for controlling the device are associated with each other.

The information controller 120 functions as a control parameter management unit 121, a failure information management unit 125, and a detection information management unit 126 by executing a program stored in the storage device 120a. The failure information table 127 and the detection information table 128 are stored in the storage device 120a of the information controller 120. The failure information table 127 is a data table in which the name and identifier of the device determined to be a failure by the failure determination unit 115 and the type (content) of the failure are associated with each other. The detection information table 128 is a data table in which the names and identifiers of the sensors 182 and 183 are associated with the numerical values of the physical quantities detected by the sensors 182 and 183.

The detection information acquisition unit 116 provides information in which the physical quantities (pressure, temperature, current value, voltage value, etc.) detected by the sensors 182 and 183 are associated with the names and identifiers of the sensors 182 and 183 that have detected the physical quantities (hereinafter,). , Also referred to as detection information) and output it to the detection information management unit 126. The detection information management unit 126 stores the acquired detection information in the detection information table 128. The sensors 182 and 183 are detection devices that detect vehicle body information related to maintenance, and are provided in a plurality of sensors 182 and 183 in the work machine 100. The sensor 182 detects the operating state of the work machine 100 and physical quantities representing the operating state (engine rotation speed, pressure of the hydraulic actuator, discharge pressure of the main pump 31, operating pressure of the operating device 34, temperature of hydraulic oil, etc.). The above-mentioned operating pressure sensors 37a and 37b are included in the plurality of sensors 182. The sensor 183 is a detection device that detects a physical quantity for monitoring the operation of each device mounted on the work machine 100. The plurality of sensors 183 include a voltage sensor that detects a control signal (voltage) from the vehicle body control controller 110 for an electromagnetic proportional valve amplifier (not shown) that supplies a control current to the solenoid of the electromagnetic proportional valve 181. The detection information management unit 126 repeatedly acquires the physical quantities detected by the sensors 182 and 183 during the operation of the work machine 100 and stores them in the detection information table 128.

The failure determination unit 115 determines whether or not the device monitored by the sensor 183 is out of order based on the detection information acquired by the detection information acquisition unit 116. For example, the failure determination unit 115 determines whether or not the numerical value representing the physical quantity detected by the sensor 183 is within a predetermined range (greater than or equal to the first threshold value and less than the second threshold value). When the numerical value representing the physical quantity detected by the sensor 183 is within a predetermined range, the failure determination unit 115 determines that the device monitored by the sensor 183 has not failed. When the numerical value representing the physical quantity detected by the sensor 183 is not within a predetermined range, the failure determination unit 115 determines that the device monitored by the sensor 183 is out of order. The predetermined range (1st threshold value or more and less than the 2nd threshold value) used for failure determination is determined according to the specifications of the device to be monitored.

The failure determination unit 115 outputs the determination result to the failure information management unit 125. For example, when the voltage sensor (sensor 183) detects a control signal (voltage) from the vehicle body control controller 110 to the electromagnetic proportional valve amplifier (not shown), and the detected voltage value is less than the first threshold value. , The signal line connecting the electromagnetic proportional valve 181 and the vehicle body control controller 110 via the electromagnetic proportional valve amplifier or the electromagnetic proportional valve amplifier is determined to be defective (abnormal), and the determination result is determined by the failure information management unit. Output to 125. Based on the input determination result, the failure information management unit 125 provides information (hereinafter, failure information) in which the name and identifier of the device determined to be a failure are associated with the type of failure (for example, electromagnetic proportional valve low voltage abnormality). (Also referred to as) is stored in the failure information table 127. Although not shown, the failure information management unit 125 acquires failure information from controllers such as the engine controller 130 and the battery controller via the vehicle-mounted network 21 and stores the failure information in the failure information table 127. In the failure information table 127, failure information as vehicle body information related to maintenance is collected for each controller.

The communication unit 158 receives various information from a relay device 71 such as a wireless router that functions as a wireless access point and a mobile terminal 51 connected via the communication line 20. The information received by the communication unit 158 includes information on access application, authentication information, screen switching instruction, control parameter change instruction, and communication method switching instruction. Further, the communication unit 158 transmits various information to the mobile terminal 51 connected via the relay device 71 and the communication line 20. The information transmitted by the communication unit 158 includes information (image data) of the display image generated by the display image generation unit 159. The display image information (image data) refers to information for displaying a predetermined display image on the display screen of the mobile terminal 51, and is used for, for example, html format Web page data and Web page decoration. Refers to image files such as jpg format and gif format.

The communication unit 158 transmits / receives radio waves via the communication antenna 150a. The communication unit 158 can perform wireless communication by, for example, a wireless LAN (Local Area Network) communication method such as Wi-Fi (registered trademark). The communication method is not limited to this, and the communication unit 158 may perform wireless communication by ZigBee (registered trademark), NFC (Near Field Communication), BT (Bluetooth (registered trademark)) or the like.

The connection authentication unit 152 determines whether or not the communication unit 158 has received the access request. When the connection authentication unit 152 determines that the communication unit 158 has received the access application, the display image generation unit 159 generates and generates authentication image data in a format (for example, html format) that can be displayed by the Web browser 51w. The authenticated image data is transmitted to the mobile terminal 51 by the communication unit 158. The authentication image data (authentication page data) is Web page data that can be viewed by the Web browser 51w.

The connection authentication unit 152 acquires authentication information from the mobile terminal 51 via the communication unit 158. Whether or not the connection authentication unit 152 wirelessly transmits the maintenance-related information to the mobile terminal 51 via the communication antenna 150a by comparing the acquired authentication information with the registration information stored in the storage device 151a in advance. To decide.

Specifically, the connection authentication unit 152 determines whether or not the authentication information acquired from the mobile terminal 51 matches the registered information. When the connection authentication unit 152 determines that the authentication information matches the registration information, the display image generation unit 159 generates start image data in a format that can be displayed by the Web browser 51w (for example, html format), and communicates with the data. The start image data is transmitted to the mobile terminal 51 by the unit 158. The start image data (start page data) is Web page data that can be viewed by the Web browser 51w. When the connection authentication unit 152 determines that the authentication information does not match the registered information, the display image generation unit 159 generates the authentication image data, and the communication unit 158 transmits the authentication image data to the mobile terminal 51.

In this way, when the authentication information input to the mobile terminal 51 matches the registration information of the work machine 100, the image displayed on the display unit 51d of the mobile terminal 51 starts from the authentication image (authentication page). It changes to an image (start page). After that, as will be described later, when the mobile terminal 51 is operated by the service personnel, the control device 101 converts the maintenance-related information into a display format that can be displayed by the Web browser 51w, and the converted information (data) is converted into the mobile terminal. It is wirelessly transmitted to 51, and information on maintenance is displayed on the display unit 51d.

On the other hand, when the authentication information input to the mobile terminal 51 does not match the registration information of the work machine 100, the display unit 51d of the mobile terminal 51 maintains the display of the authentication image (authentication page), and the start image ( The start page) is not displayed. Therefore, when the authentication information does not match the registered information, the information regarding the maintenance of the work machine 100 is not wirelessly transmitted to the mobile terminal 51.

In the image switching unit 157, the communication unit 158 sends a predetermined image switching instruction (image switching instruction to the failure diagnosis image, image switching instruction to the monitoring image, image switching instruction to the parameter change image, and communication method change) from the mobile terminal 51. It is determined whether or not an image switching instruction to an image) has been received.

When the image switching unit 157 determines that the communication unit 158 has received the image switching instruction to the failure diagnosis image, the display image generation unit 159 has a failure diagnosis image in a format (for example, html format) that can be displayed by the Web browser 51w. Generate data. The communication unit 158 transmits the failure diagnosis image data generated by the display image generation unit 159 to the mobile terminal 51. The failure diagnosis image data (fault diagnosis page data) is Web page data that can be viewed by the Web browser 51w.

The image switching unit 157 determines whether or not the communication unit 158 has received the failure diagnosis instruction from the mobile terminal 51. When the image switching unit 157 determines that the communication unit 158 has received the failure diagnosis instruction, the vehicle body information conversion unit 155 outputs the failure information acquisition instruction to the failure information management unit 125. When the failure information acquisition instruction is input, the failure information management unit 125 outputs the failure information stored in the failure information table 127 to the vehicle body information conversion unit 155.

The vehicle body information conversion unit 155 acquires failure information from the failure information table 127, and converts the acquired failure information into a format (for example, html format) that can be displayed on the Web browser 51w of the mobile terminal 51. The display image generation unit 159 generates failure diagnosis image data (fault diagnosis page data) including the failure information converted by the vehicle body information conversion unit 155. The communication unit 158 transmits the failure diagnosis image data (fault diagnosis page data) generated by the display image generation unit 159, that is, the Web page data in a format that can be displayed by the Web browser 51w of the mobile terminal 51 to the mobile terminal 51.

When the image switching unit 157 determines that the communication unit 158 has received the image switching instruction to the monitoring image, the vehicle body information conversion unit 155 outputs the detection information acquisition instruction to the detection information management unit 126. When the detection information acquisition instruction is input, the detection information management unit 126 outputs the detection information stored in the detection information table 128 to the vehicle body information conversion unit 155.

The vehicle body information conversion unit 155 acquires the detection information from the detection information table 128, and converts the acquired detection information into a format (for example, html format) that can be displayed on the Web browser 51w of the mobile terminal 51. The display image generation unit 159 generates monitoring image data (monitoring page data) including the detection information converted by the vehicle body information conversion unit 155. The monitoring image data (monitoring page data) is Web page data that can be viewed by the Web browser 51w. The communication unit 158 transmits the monitoring image data (monitoring page data) generated by the display image generation unit 159, that is, the Web page data in a format that can be displayed by the Web browser 51w of the mobile terminal 51 to the mobile terminal 51.

When the image switching unit 157 determines that the communication unit 158 has received the image switching instruction to the parameter change image, the display image generation unit 159 has the parameter change image in a format (for example, html format) that can be displayed by the Web browser 51w. Generate data. The communication unit 158 transmits the parameter change image data generated by the display image generation unit 159 to the mobile terminal 51. The parameter change image data (parameter change page data) is Web page data that can be viewed by the Web browser 51w.

The change instruction receiving unit 153 determines whether or not the communication unit 158 has received the parameter change instruction. When it is determined that the communication unit 158 has received the parameter change instruction, the change instruction receiving unit 153 outputs the parameter change instruction to the control parameter management unit 121. The control parameter management unit 121 changes the control parameters stored in the control parameter table 111 based on the input control parameter change instruction.

The vehicle body control execution unit 112 reads the control parameters stored in the control parameter table 111, and uses the control parameters to control the current of the electromagnetic proportional valve 181. A plurality of electromagnetic proportional valves 181 are provided in the work machine 100, and the above-mentioned electromagnetic proportional valves 36b are included in the plurality of electromagnetic proportional valves 181.

When the image switching unit 157 determines that the communication unit 158 has received the image switching instruction to the communication method change image, the display image generation unit 159 is a communication method in a format (for example, html format) that can be displayed by the Web browser 51w. Generate modified image data. The communication unit 158 transmits the communication method change image data generated by the display image generation unit 159 to the mobile terminal 51. The communication method change image data (communication method change page data) is Web page data that can be viewed by the Web browser 51w.

The communication method switching unit 154 determines whether or not the communication method switching unit 158 has received the communication method switching instruction. When it is determined that the communication method switching unit 158 has received the communication method switching instruction, the communication method switching unit 154 sets the communication mode according to the communication method switching instruction. When the communication method switching instruction is an instruction to set the communication mode to the ad hoc mode, the communication method switching unit 154 sets the communication mode to the ad hoc mode. When the communication method switching instruction is an instruction to set the communication mode to the infrastructure mode, the communication method switching unit 154 sets the communication mode to the infrastructure mode. The display image generation unit 159 generates display image data representing the currently set communication mode, and the generated display image data is transmitted to the mobile terminal 51 by the communication unit 158.

When the infrastructure mode is set as the communication mode, the communication unit 158 communicates with the mobile terminal 51 via the relay device 71 and the communication line 20. When the ad hoc mode is set as the communication mode, the communication unit 158 directly communicates with the mobile terminal 51 without going through the relay device 71.

The mobile terminal 51 can apply for access to the work machine 100 by using the pre-installed Web browser 51w. When the access application is permitted, a predetermined image is displayed on the Web browser 51w, information (data) in a display format is received from the work machine 100 by performing a predetermined input, and the Web browser 51w is based on the information. Display the display image on the top.

FIG. 4 is a flowchart showing the contents of the authentication process by the communication controller 151. The process shown in the flowchart shown in FIG. 4 is started, for example, by turning on an ignition switch (not shown), and is repeatedly executed in a predetermined control cycle after performing initial settings (not shown).

In step S101, the communication controller 151 determines whether or not the mobile terminal 51 has received the application for access to the work machine 100 via the Web browser 51w. The process of step S101 is repeatedly executed until the access request is received, and when the access request is received, the process proceeds to step S105.

In step S105, the communication controller 151 generates authentication image (authentication page) data for access authentication, transmits the generated authentication image data to the mobile terminal 51, and proceeds to step S109. Since the authentication image (authentication page) is displayed on the Web browser 51w of the mobile terminal 51, the service worker inputs the authentication information in the input area formed in the authentication image. The authentication information is, for example, information composed of a combination of alphanumeric characters. When the authentication information is input to the input area on the Web browser 51w of the mobile terminal 51, the authentication information is transmitted to the work machine 100.

In step S109, the communication controller 151 determines whether or not the received authentication information matches the registration information stored in the storage device 151a. If the input authentication information matches the registration information stored in the storage device 151a, the process proceeds to step S113. If the input authentication information does not match the registration information stored in the storage device 151a, the process returns to step S105.

In step S113, the communication controller 151 generates start image data (start page data) for starting maintenance work (fault diagnosis, monitoring, etc.), transmits the generated start image data to the mobile terminal 51, and shows FIG. The process shown in the flowchart of is terminated.

FIG. 6 is a diagram showing an example of a start image (start page) 160A displayed on the Web browser 51w of the display unit 51d of the mobile terminal 51. As shown in FIG. 6, the start image 160A has a failure diagnosis selection area 161, a monitoring selection area 162, a parameter change selection area 163, and a communication method change selection area 164. The start image 160A is an area formed on Web pages (160B to 160E) described later, such as information on the model of the work machine, the machine number of the work machine, the type of controller mounted on the work machine, and the version of the controller. It has a common area for displaying information and the like.

FIG. 5 is a flowchart showing the contents of main processing by the communication controller 151 after the start image 160A is displayed on the display unit 51d of the mobile terminal 51. The process shown in the flowchart shown in FIG. 5 is started by executing the process in step 113 of the flowchart shown in FIG. When the process of step S113 is executed, the communication controller 151 is in a state of waiting for input of the display image switching instruction.

As shown in FIG. 6, while the start image 160A is displayed on the Web browser 51w of the mobile terminal 51, the service worker can perform a plurality of display image switching instruction areas (fault diagnosis selection area) formed on the start image 160A. When any one of 161, the monitoring selection area 162, the parameter change selection area 163, and the communication method change selection area 164) is touched, an image switching instruction corresponding to that area is transmitted to the work machine 100.

As shown in FIG. 5, in step S121, the communication controller 151 determines whether or not an image switching instruction to the failure diagnosis image has been received. When the service worker touches the failure diagnosis selection area 161 (see FIG. 6) displayed on the Web browser 51w, an image switching instruction to the failure diagnosis image is transmitted from the mobile terminal 51 to the work machine 100. If it is determined in step S121 that the image switching instruction to the failure diagnosis image has been received, the process proceeds to step S123. If it is determined in step S121 that the image switching instruction to the failure diagnosis image has not been received, the process proceeds to step S131.

In step S123, the communication controller 151 generates failure diagnosis image data, transmits the generated failure diagnosis image data to the mobile terminal 51, and proceeds to step S125. By the process of step S123, the failure diagnosis image (fault diagnosis page) 160B is displayed on the Web browser 51w displayed on the display unit 51d of the mobile terminal 51 (see FIG. 7).

FIG. 7 is a diagram showing an example of a failure diagnosis image (fault diagnosis page) 160B displayed on the Web browser 51w of the display unit 51d of the mobile terminal 51. As shown in FIG. 7, the failure diagnosis image 160B has a plurality of display image switching instruction areas (161a, 162, 163, 164) like the start image 160A. Here, in the failure diagnosis selection area 161a, in order to show that the failure diagnosis image 160B is displayed, the characters and the background color are displayed in reverse with respect to the normal color display.

The failure diagnosis image 160B displays a target selection area 165, which is an area for selecting a target for failure diagnosis, a diagnosis start area 166, which is an area for executing a failure diagnosis of the selected target, and failure information. It has a failure information display area 167 and. The target selection area 165 is divided into areas for each controller, and the name of the controller is displayed in each area. The service personnel can select a controller for diagnosis from a plurality of controllers.

For example, when the service worker touches the area corresponding to the vehicle body control controller 110, information indicating that the vehicle body control controller 110 has been selected is transmitted from the mobile terminal 51 to the work machine 100. Upon receiving this information, the communication controller 151 transmits information for highlighting the display area of the selected controller to the mobile terminal 51. Each time a different controller is selected from the target selection area 165, the communication controller 151 transmits information for highlighting the display area of the selected controller to the mobile terminal 51. That is, in step S123, after transmitting the information of the initial image of the failure diagnosis image 160B, the communication controller 151 inverts the display area of the selected controller based on the controller selection instruction received from the mobile terminal 51. Information (data) of the display image is transmitted to the mobile terminal 51.

When the service worker touches the display area of the controller to be diagnosed to select the controller to be diagnosed and touches the diagnosis start area 166, a failure diagnosis instruction is transmitted from the mobile terminal 51 to the work machine 100. Will be done.

As shown in FIG. 5, in step S125, the communication controller 151 determines whether or not a failure diagnosis instruction has been received. If it is determined that the failure diagnosis instruction has been received, the process proceeds to step S127, and if it is determined that the failure diagnosis instruction has not been received, the process proceeds to step S160.

In step S127, the communication controller 151 acquires the failure information stored in the failure information table 127 of the information controller 120, and proceeds to step S129.

In step S129, the communication controller 151 generates the failure information image data including the failure information by incorporating the failure information acquired in step S127 into the initial image of the failure diagnosis image data. That is, the communication controller 151 converts the acquired failure information into information (data) in a format that can be displayed on the Web browser 51w, generates failure diagnosis image data including the converted information (data), and generates the mobile terminal 51. Is transmitted to, and the process proceeds to step S160.

When the failure diagnosis image data including the failure information is transmitted to the mobile terminal 51, the failure information is displayed in the failure information display area 167 on the Web browser 51w as shown in FIG. 7. In the example shown in FIG. 7, in the failure information display area 167, "○○ electromagnetic proportional valve" indicating the name of the device (electromagnetic proportional valve) determined to be a failure and "low voltage abnormality" indicating the type (content) of the failure. Is displayed. If there is no device that is out of order, the failure information display area 167 is blank. At this time, a sentence indicating that there is no malfunctioning device may be displayed. The image of the failure information displayed on the mobile terminal 51 is used for maintenance and troubleshooting by the service staff.

As shown in FIG. 5, in step S131, the communication controller 151 determines whether or not an image switching instruction to the monitoring image has been received. When the service worker touches the monitoring selection area 162 displayed on the Web browser 51w, an image switching instruction to the monitoring image is transmitted from the mobile terminal 51 to the work machine 100. If it is determined in step S131 that the image switching instruction to the monitoring image has been received, the process proceeds to step S137. If it is determined in step S131 that the image switching instruction to the monitoring image has not been received, the process proceeds to step S141.

In step S137, the communication controller 151 acquires the detection information stored in the detection information table 128 of the information controller 120, and proceeds to step S139.

In step S139, the communication controller 151 converts the detection information acquired in step S137 into a format that can be displayed on the Web browser 51w, generates monitoring image data including the converted information (data), and connects the mobile terminal 51 to the mobile terminal 51. The transmission is performed, and the process proceeds to step S160.

When the monitoring image data is transmitted to the mobile terminal 51, the monitoring image (monitoring page) 160C is displayed on the Web browser 51w displayed on the display unit 51d of the mobile terminal 51 (see FIG. 8).

FIG. 8 is a diagram showing an example of a monitoring image (monitoring page) 160C displayed on the Web browser 51w of the display unit 51d of the mobile terminal 51. As shown in FIG. 8, the monitoring image 160C has a plurality of display image switching instruction regions (161, 162a, 163, 164) like the start image 160A. Here, in the monitoring selection area 162a, in order to show that the monitoring image 160C is displayed, the characters and the background color are displayed in reverse with respect to the normal color display.

The monitoring image 160C has a detection information area 168, which is an area for displaying detection information. In the example shown in FIG. 8, in the detection information area 168, "○○ operating pressure", "△△ operating pressure", and "hydraulic oil temperature" are displayed as information for specifying the physical quantity detected by the sensors 182 and 183, and the information thereof is displayed. The numerical value and unit of the physical quantity are displayed. In the present embodiment, "○○ electromagnetic proportional valve command pressure" and "Δ△ electromagnetic proportional valve command pressure" are also displayed in the detection information area 168 as the information calculated by the vehicle body control controller 110. The “〇〇 electromagnetic proportional valve command pressure” is, for example, a target value of the pilot pressure generated by the electromagnetic proportional valve 36b. The “〇〇 operating pressure” is, for example, an actually measured value of the operating pressure (boom lowering operating pressure) detected by the operating pressure sensor 37b. The hydraulic oil temperature is an actually measured value of the hydraulic oil temperature detected by the sensor 182 that detects the temperature of the hydraulic oil used in the hydraulic system 30. The service personnel can monitor the operating state of the vehicle body based on the image of the detection information. Further, the image of the detection information displayed on the mobile terminal 51 is used for maintenance and troubleshooting by the service staff.

As shown in FIG. 5, in step 141, the communication controller 151 determines whether or not an image switching instruction to the parameter change image has been received. When the service worker touches the parameter change selection area 163 displayed on the Web browser 51w, an image switching instruction to the parameter change image is transmitted from the mobile terminal 51 to the work machine 100. If it is determined in step S141 that the image switching instruction to the parameter change image has been received, the process proceeds to step S143. If it is determined in step S141 that the image switching instruction to the parameter change image has not been received, the process proceeds to step S151.

In step S143, the communication controller 151 generates the parameter change image data, transmits the generated parameter change image data to the mobile terminal 51, and proceeds to step 146. By the process of step S143, the parameter change image (parameter change page) 160D is displayed on the Web browser 51w displayed on the display unit 51d of the mobile terminal 51 (see FIG. 9).

FIG. 9 is a diagram showing an example of a parameter change image (parameter change page) 160D displayed on the Web browser 51w of the display unit of the mobile terminal 51. As shown in FIG. 9, the parameter change image 160D has a plurality of display image switching instruction areas (161, 162, 163a, 164) like the start image 160A. Here, in the parameter change selection area 163a, the characters and the background color are displayed in reverse with respect to the normal color display in order to indicate that the parameter change image 160D is displayed.

The parameter change image 160D has a parameter change instruction area 169, which is an area for selecting an object for which the parameter is changed, and a setting area 170, which is an area for executing the selected control parameter change process. .. The parameter change instruction area 169 is divided for each control parameter, and the type of control parameter is displayed in each area. In the example shown in FIG. 9, in the parameter change instruction area 169, "○○ electromagnetic proportional valve correction pressure" “△△ electromagnetic proportional valve correction pressure” “○○ control standby time” “△△ rotation speed” indicating the type of control parameter "XX control enable / disable switching" is displayed, and the numerical value and unit of the control parameter currently set are displayed.

The “〇〇 electromagnetic proportional valve correction pressure” is, for example, a correction pressure added to a target value of the pressure generated by the electromagnetic proportional valve 36b. By changing this correction pressure (control parameter), the degree of deceleration in the stop control that gradually decelerates the boom lowering operation as the tip of the bucket 16 approaches the excavation target surface when the boom lowering operation is performed can be determined. Can be adjusted.

The "○○ control standby time" is, for example, the standby time for auto-idle control, which is the time (threshold value) from when the operator interrupts the work until the operator is controlled by the auto-idle rotation speed. By changing this standby time (control parameter), it is possible to adjust the time from when the operator interrupts the work until it is controlled by the auto idle rotation speed.

The “△△ rotation speed” is, for example, an auto idle rotation speed. The operator can adjust the auto idle rotation speed by changing this rotation speed (control parameter).

“XX control valid / invalid switching” is, for example, switching between valid / invalid of auto idle control. By switching the enable / disable (control parameter) of the auto idle control, the operator can put the auto idle control into a state in which it is effectively exerted or a state in which the auto idle control does not function. When the operator changes the auto idle control to disabled, the auto idle function is disabled. In this state, the vehicle body control controller 110 sets the rotation speed set by the engine control dial 62 as the target rotation speed even if a predetermined time elapses after all the operation levers 34a of the operation device 34 are in the non-operation state. Output to the engine controller 130. When the operator changes the auto idle control to enabled, the auto idle function is enabled again.

When the service personnel touches the display area of the control parameter to be changed, the control parameter to be changed is selected. When the service worker touches the setting area 170 with the control parameter selected, the parameter change instruction is transmitted from the mobile terminal 51 to the work machine 100.

As shown in FIG. 5, in step S146, the communication controller 151 determines whether or not the parameter change instruction has been received. If it is determined that the parameter change instruction has been received, the process proceeds to step S148, and if it is determined that the parameter change instruction has not been received, the process proceeds to step S160.

In step S148, the communication controller 151 outputs the information of the control parameter changed in the parameter change instruction area 169 to the control parameter management unit 121, and proceeds to step S160. When the control parameter information is input from the change instruction receiving unit 153, the control parameter management unit 121 changes and stores the control parameter information stored in the control parameter table 111. As a result, the numerical values of the control parameters used by the vehicle body control execution unit 112 are changed, and the work machine 100 can be made to perform the operation intended by the operator.

In step S151, the communication controller 151 determines whether or not an image switching instruction to the communication method change image has been received. When the service worker touches the communication method change selection area 164 displayed on the Web browser 51w, an image switching instruction to the communication method change image is transmitted from the mobile terminal 51 to the work machine 100. If it is determined in step S151 that the image switching instruction to the communication method change image has been received, the process proceeds to step S153. If it is determined in step S151 that the image switching instruction to the communication method change image has not been received, the process proceeds to step S160.

In step S153, the communication controller 151 generates the communication method change image data, transmits the generated communication method change image data to the mobile terminal 51, and proceeds to step 156. By the process of step S153, the communication method change image (communication method change page) 160E is displayed on the Web browser 51w displayed on the display unit 51d of the mobile terminal 51 (see FIG. 10).

FIG. 10 is a diagram showing an example of a communication method change image (communication method change page) 160E displayed on the Web browser 51w of the display unit 51d of the mobile terminal 51. As shown in FIG. 10, the communication method change image 160E has a plurality of display image switching instruction areas (161, 162, 163, 164a) like the start image 160A. Here, in the communication method change selection area 164a, the characters and the background color are displayed in reverse with respect to the normal color display in order to indicate that the communication method change image 160E is displayed.

The communication method change image 160E is selected as a first mode area 171 which is an area for setting the communication mode to the infrastructure mode and a second mode area 172 which is an area for setting the communication mode to the ad hoc mode. It has a setting area 173, which is an area for executing the setting process of the communication mode. The service worker can operate the mobile terminal 51 to select either the infrastructure mode or the ad hoc mode.

For example, when the service worker touches the first mode area 171, information indicating that the infrastructure mode has been selected is transmitted from the mobile terminal 51 to the work machine 100. Upon receiving this information, the communication controller 151 transmits information for highlighting the selected first mode area 171 to the mobile terminal 51.

When the service worker touches either the first mode area 171 or the second mode area 172 to select the communication mode and then touches the setting area 173, the communication method is switched from the mobile terminal 51 to the work machine 100. Instructions are sent.

As shown in FIG. 5, in step S156, the communication controller 151 determines whether or not the communication method switching instruction has been received. If it is determined that the communication method switching instruction has been received, the process proceeds to step S158, and if it is determined that the communication method switching instruction has not been received, the process proceeds to step S160.

In step S158, the communication controller 151 sets the communication mode to the communication mode set by the service personnel as the communication method switching process, and proceeds to step S160.

In step S160, the communication controller 151 determines whether or not the end instruction has been received. When it is determined that the end instruction has been received, the process shown in the flowchart of FIG. 5 is terminated. If it is determined that the end instruction has not been received, the process returns to step S121. Therefore, when the end instruction is not received, the predetermined image (Web page) is continuously displayed on the Web browser 51w.

The end instruction is transmitted from the mobile terminal 51 to the work machine 100 when an end area (not shown) is provided on the Web browser 51w and the end area is touch-operated. In addition, when the wireless communication with the mobile terminal 51 becomes impossible for a predetermined time due to the closing of the Web browser 51w or the deterioration of the radio wave condition, the same as when the termination instruction is given, FIG. The process shown in the flowchart of is terminated.

As described above, the work machine 100 according to the present embodiment is in a format (html format, jpg format, gif format) in which vehicle body information related to maintenance can be displayed by a Web browser 51w installed in an external device such as a mobile terminal 51. It is converted into data, Web page data including the converted data is generated, and is transmitted to the mobile terminal 51. Therefore, the service staff can display the maintenance-related information on the display unit 51d of the mobile terminal 51, browse the maintenance-related information, and perform the maintenance work of the work machine 100 by using the general-purpose Web browser 51w.

Conventionally, the vehicle body information of the work machine 100 (numerical data of physical quantities detected by the sensor, a code representing failure information, etc.) has been transmitted to the mobile terminal 51 as it is without being converted into a display format by the work machine 100. .. Then, the mobile terminal 51 converts the received vehicle body information of the work machine 100 (numerical data of physical quantities detected by the sensor, a code representing failure information, etc.) into a display format by the dedicated application software installed in advance. The display image data was generated and displayed on the display unit 51d. However, if the model of the work machine 100 is different, the specifications of the equipment mounted on the work machine 100 are also different, so that the items to be maintained differ depending on the model of the work machine 100. Therefore, it is necessary to install the dedicated application software corresponding to the model of the work machine 100 on the mobile terminal 51, and there is a problem that it takes time and effort to prepare for the maintenance work.

In addition, conventionally, a dedicated failure diagnosis device (service tool) corresponding to the work machine 100 is connected to the work machine 100 by wire, vehicle body information is acquired, and an application software installed in the dedicated failure diagnosis device is used. In some cases, maintenance work was performed by converting vehicle body information into a display format to generate display image data and displaying it on the display unit of a failure diagnosis device. In this case, since it is necessary to prepare a dedicated failure diagnosis device corresponding to the work machine 100, there is also a problem that it takes time and effort to prepare the maintenance work. Further, when the failure diagnosis device is connected to the work machine 100 by wire, it is necessary to match the specifications of the communication connector to be connected, and it is also necessary to prepare the failure diagnosis device in consideration of the specifications of the communication connector.

On the other hand, in the present embodiment, as described above, the work machine 100 converts the vehicle body information into information (data) in a format that can be displayed by the Web browser 51w, and transmits the converted information (data) to the mobile terminal 51. do. Therefore, it is possible to save the trouble of installing the dedicated application software corresponding to the work machine 100 to be maintained on the mobile terminal 51 before the maintenance work. Moreover, it is not necessary to prepare a dedicated failure diagnosis device. Therefore, the efficiency of the preparatory work before the maintenance work of the work machine 100 can be improved.

According to the above-described embodiment, the following effects are exhibited.

(1) The control device 101 acquires the detection information detected by the sensors 182 and 183 mounted on the work machine 100, and based on the detection information, the device mounted on the work machine 100 (electromagnetic proportional valve 181 and the like). ) Is out of order, and the determination result and detection information are output from the vehicle body control controller (first controller) 110 and the vehicle body control controller (first controller) 110 as information related to the maintenance of the work machine 100. An information controller (second controller) 120 that stores and stores the output maintenance-related information, and a format that allows the mobile terminal (external device) 51 to display the maintenance-related information stored in the information controller (second controller) 120 (external device). For example, it has a communication controller (third controller) 151 that converts the converted information (data) into (html format) and wirelessly transmits the converted information (data) to the mobile terminal (external device) 51 via the communication antenna 150a. Thereby, the efficiency of the preparatory work before the maintenance work of the work machine 100 can be improved.

(2) The control device 101 generates Web page data including the converted information, and wirelessly transmits the generated Web page data to the mobile terminal (external device) 51 via the communication antenna 150a. As a result, information on the maintenance of the work machine 100 can be confirmed by browsing the Web page with the easily available Web browser 51w.

(3) The maintenance information includes failure information of equipment (electromagnetic proportional valve 181 and the like) mounted on the work machine 100. Therefore, the service staff can identify the cause of the failure based on the failure information displayed on the display unit 51d of the mobile terminal 51, and consider a repair method or the like of the failure. The maintenance information includes the detection information detected by the sensors 182 and 183 mounted on the work machine 100. Therefore, the service staff can monitor the state of the work machine 100 based on the detection information displayed on the display unit 51d of the mobile terminal 51.

(4) When the mobile terminal 51 is operated and a control parameter change instruction is received from the mobile terminal 51, the control device 101 changes the control parameter and controls the work machine 100 based on the changed control parameter. Therefore, the service staff can easily change the control parameters at the work site based on the hearing from the operator who operates the work machine 100.

(5) The control device 101 acquires authentication information from the mobile terminal 51, compares the authentication information with the registration information stored in the storage device 151a in advance, and maintains the mobile terminal 51 via the communication antenna 150a. Decide whether to wirelessly transmit information about. That is, in order to access the work machine 100 from the mobile terminal 51 and browse the information related to the maintenance of the work machine 100, it is necessary to input the authentication information that matches the information (registration information) registered in the work machine 100. be. Therefore, only a service worker who knows the registration information can access the work machine 100 and acquire information related to maintenance such as failure information and detection information. Therefore, according to the present embodiment, it is possible to prevent a person other than the service staff from acquiring information on the maintenance of the work machine 100. Further, in the present embodiment, the control device 101 determines whether or not to accept the control parameter change instruction by comparing the authentication information with the registration information stored in the storage device 151a in advance. Therefore, only a service worker who knows the registration information can access the work machine 100 and change the control parameters. Therefore, according to the present embodiment, it is possible to prevent the control parameters of the work machine 100 from being changed by a person other than the service staff.

(6) The control device 101 has an ad hoc mode that communicates with the mobile terminal 51 without going through a wireless access point such as a relay device 71, and an infrastructure that communicates with the mobile terminal 51 via a wireless access point such as a relay device 71. One of the structure modes is set, and wireless communication is performed with the mobile terminal 51 according to the set mode. Therefore, when the communication state of the work machine 100 is good, not only the mobile terminal 51 but also the management server 41 communicates with the work machine 100, so that information on maintenance can be acquired and control parameters can be changed. It will be possible. When the communication state of the work machine 100 is poor, by directly connecting the mobile terminal 51 and the work machine 100 wirelessly, the mobile terminal 51 can acquire information on maintenance and change control parameters. Become.

The following modifications are also within the scope of the present invention, and it is possible to combine the configurations shown in the modifications with the configurations described in the above-described embodiments, or to combine the configurations described in the following different modifications. Is.

<Modification example 1>
In the above embodiment, an example in which the front working device 13 is composed of the boom 14, the arm 15, and the bucket 16 has been described, but the present invention is not limited thereto. The structure of the front working device 13, the number of joints, and the like can be arbitrarily configured. Further, the attachment is not limited to the bucket 16, and various attachments can be adopted. For example, the work machine 100 may be equipped with a grapple that opens and closes hydraulically to grip an object instead of the bucket 16.

Here, when the attachment of the work machine 100 is changed from the bucket 16 to another attachment (for example, a grapple), a new actuator and a sensor are added. Therefore, when the device is added to the work machine 100, the control device 101 acquires information on the maintenance of the added device, converts the acquired additional information into a format that can be displayed on the mobile terminal 51, and converts the information. The additional information is wirelessly transmitted to the mobile terminal 51 via the communication antenna 150a. As a result, maintenance work can be additionally performed on the equipment mounted on the work machine 100. The control program stored in the storage devices 110a, 120a, 151a of the control device 101 is configured so that when a device is added, information from the added device can be acquired. When an unexpected device is additionally mounted on the work machine 100, an updated version of the control program is transmitted from the management server 41 to the work machine 100, and the storage device 110a of the control device 101 of the work machine 100 is transmitted. , 120a, 151a update the control program stored in. As a result, the information about the added device can be displayed on the mobile terminal 51.

<Modification 2>
In the above embodiment, the maintenance information to be converted into the display format by the vehicle body information conversion unit 155 includes failure information of the equipment mounted on the work machine 100 and detection information detected by the sensor mounted on the work machine 100. However, the present invention is not limited to this. The maintenance information to be converted into the display format by the vehicle body information conversion unit 155 includes either the failure information of the equipment mounted on the work machine 100 or the detection information detected by the sensor mounted on the work machine 100. Just do it.

<Modification example 3>
In the above embodiment, the case where the work machine 100 is a crawler type hydraulic excavator has been described as an example, but the present invention is not limited to this. The present invention can be applied to various work machines equipped with a work device such as a wheel type hydraulic excavator, a wheel loader, and a crawler crane.

Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configurations of the above embodiments. No.

36b ... Electromagnetic proportional valve (equipment), 37a, 37b ... Operating pressure sensor (equipment), 51 ... Portable terminal (external device), 71 ... Relay device, 100 ... Work machine, 101 ... Control device, 110 ... Body control controller ( 1st controller), 120 ... Information controller (2nd controller), 150a ... Communication antenna, 151 ... Communication controller (3rd controller), 181 ... Electromagnetic proportional valve (equipment), 182,183 ... Sensor

Claims (5)

In a work machine equipped with a control device that controls the equipment mounted on the work machine,
The control device is
The detection information detected by the sensor mounted on the work machine is acquired, it is determined whether or not the device is out of order based on the detection information, and the determination result and the detection information are used in the work machine. The first controller that outputs information about maintenance,
A second controller that accumulates and stores information about the maintenance output from the first controller, and
It has a communication controller that converts the maintenance-related information stored in the second controller into a format that can be displayed by an external device, and wirelessly transmits the converted information to the external device via a communication antenna.
A work machine characterized by that. In the work machine according to claim 1,
The control device is
Web page data including the converted information is generated, and
The generated Web page data is wirelessly transmitted to the external device via the communication antenna.
A work machine characterized by that. In the work machine according to claim 1,
The control device acquires authentication information from the external device, and by comparing the authentication information with the registration information stored in the storage device in advance, the information regarding the maintenance is provided to the external device via the communication antenna. Decide whether to transmit wirelessly,
A work machine characterized by that. In the work machine according to claim 1,
The control device sets either an ad hoc mode in which communication is performed with the external device without going through a wireless access point or an infrastructure mode in which communication is performed with the external device via a wireless access point, and the set mode is set. Therefore, wireless communication is performed with the external device.
A work machine characterized by that. In the work machine according to claim 1,
The control device is
When equipment is added to the work machine, information on maintenance of the added equipment is acquired, and
Convert the acquired additional information into a format that can be displayed on an external device,
The converted additional information is wirelessly transmitted to the external device via the communication antenna.
A work machine characterized by that.

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