Work machine and control method for work machine

Abstract

This work machine comprises: a power source; an output device that outputs output data; and a processor. The processor specifies the output mode of the output device on the basis of the type of the power source, and outputs a control command so that the output device operates in the output mode.

Description

Work machine and work machine control method

[0001] The present disclosure relates to a work machine and a method for controlling a work machine.

[0002] BACKGROUND ART In the technical field related to work machines, a work vehicle such as that disclosed in Patent Document 1 is known.

[0003] US Patent Application Publication No. 2023 / 0072758

[0004] BACKGROUND ART A variety of power sources have been developed as power sources for work machines. When work machines with different types of power sources are operating at a work site, a technique for distinguishing the type of power source is required.

[0005] The present disclosure is directed to identifying the type of power source of a work machine.

[0006] According to the present disclosure, there is provided a work machine including a power source, an output device that outputs output data, and a processor, wherein the processor specifies an output mode of the output device based on the type of power source, and outputs a control command to operate the output device in the output mode.

[0007] According to the present disclosure, it is possible to distinguish the type of power source of a work machine.

[0008] FIG. 1 is a diagram showing a construction machine management system according to the embodiment. FIG. 2 is a diagram showing a shovel according to the embodiment. FIG. 3 is a diagram showing a bulldozer according to the embodiment. FIG. 4 is a diagram explaining the type of power source of the construction machine according to the embodiment. FIG. 5 is a configuration diagram showing an FC construction machine according to the embodiment. FIG. 6 is a configuration diagram showing a battery construction machine according to the embodiment. FIG. 7 is a block diagram showing a construction machine control system according to the embodiment. FIG. 8 is a diagram explaining an output device 60 according to the embodiment. FIG. 9 is a flowchart showing a construction machine control method according to the embodiment. FIG. 10 is a diagram explaining the light emission form of a light-emitting device according to the embodiment. FIG. 11 is a diagram explaining the light emission form of a light-emitting device according to the embodiment. FIG. 12 is a diagram explaining the light emission form of a light-emitting device according to the embodiment. FIG. 13 is a diagram explaining the light emission form of a light-emitting device according to the embodiment. FIG. 14 is a diagram explaining the light emission form of a light-emitting device according to the embodiment. FIG. 15 is a diagram explaining the output form of an output device according to the embodiment. FIG. 16 is a diagram showing an FC construction machine and a battery construction machine according to the embodiment.

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the embodiments. The components of the embodiments described below can be combined as appropriate. In addition, some components may not be used.

[0010] [Overview of Management System] Fig. 1 is a diagram showing a management system 1 for a work machine 2 according to an embodiment. The management system 1 manages work machines 2 that operate at a work site 3. In the embodiment, the work machines 2 are electric work machines that are powered by batteries. A plurality of work machines 2 exist at the work site 3. In the example shown in Fig. 1, the work machines 2 that exist at the work site 3 include a shovel 2A, a bulldozer 2B, and a dump truck 2C.

[0011] In the embodiment, no operator is on board the work machine 2. The work machine 2 is remotely controlled. A remote control room 4 is installed outside the work machine 2. The remote control room 4 is installed in a remote location on the work site 3. An information terminal 5 and a remote control device 6 for remotely controlling the work machine 2 are each disposed in the remote control room 4. The information terminal 5 and the remote control device 6 are each located outside the work machine 2. The information terminal 5 includes a computer system disposed in the remote control room 4.

[0012] The remote control device 6 is operated by an operator in the remote control room 4. When operated by the operator, the remote control device 6 generates an operation signal for remotely operating the work machine 2. The operation signal generated in the remote control device 6 is input to the information terminal 5. The information terminal 5 generates a remote operation command based on the operation signal from the remote control device 6. The information terminal 5 transmits the remote operation command to the work machine 2 via the communication system 7.

[0013] The work machine 2 operates based on remote operation commands transmitted from an information terminal 5 located outside the work machine 2. A camera that acquires image data of the work site 3 is provided on at least one of the work machine 2 and the work site 3. The image data of the work site 3 is transmitted to the information terminal 5 via a communication system 7 and displayed on a display device of the information terminal 5. The operator can operate the remote operation device 6 while checking the image data of the work site 3.

[0014] The communication system 7 may include a public communication line or a specific communication line. Examples of the communication system 7 include a mobile phone communication network or a satellite communication network. The communication system 7 may include the Internet or a local area network.

[0015] The management system 1 has a management server 8. The management server 8 includes a computer system. The management server 8 is able to communicate with the work machine 2 via a communication system 7. The management server 8 collects operation data of the work machine 2.

[0016] 2 is a diagram showing a shovel 2A according to an embodiment. The shovel 2A has a revolving body 9, a traveling body 10, a work implement 11, and a work implement cylinder 12.

[0017] The rotating body 9 is rotatably supported by a running body 10. The running body 10 runs while supporting the rotating body 9. The running body 10 has a pair of tracks 10A. The excavator 2A runs as the tracks 10A rotate.

[0018] The work implement 11 is connected to the revolving unit 9. The work implement 11 includes a boom 11A connected to the revolving unit 9, an arm 11B connected to the boom 11A, and a bucket 11C connected to the arm 11B. The work implement cylinder 12 includes a boom cylinder 12A that operates the boom 11A, an arm cylinder 12B that operates the arm 11B, and a bucket cylinder 12C that operates the bucket 11C.

[0019] 3 is a diagram showing a bulldozer 2B according to the embodiment. The bulldozer 2B has a vehicle body 13, a running body 14, an excavator 15, a ripper 16, a work machine cylinder 17, and a ripper cylinder 18.

[0020] The vehicle body 13 is supported by a running body 14. The running body 14 runs while supporting the vehicle body 13. The running body 14 has a pair of tracks 14A. The bulldozer 2B runs as the tracks 14A rotate.

[0021] The excavation work machine 15 performs excavation work, soil dozing work, or ground leveling work on a work target. The excavation work machine 15 is attached to the vehicle body 13. At least a portion of the excavation work machine 15 is disposed in front of the vehicle body 13. The excavation work machine 15 includes an excavation blade 15A. The work machine cylinder 17 operates the excavation blade 15A.

[0022] The ripper work machine 16 performs ripping work on a work object. The work object of the ripper work machine 16 includes the ground at the work site. The ripper work machine 16 is attached to the vehicle body 13. At least a portion of the ripper work machine 16 is disposed rearward of the vehicle body 13. The ripper work machine 16 includes a shank 16A. A ripper cylinder 18 operates the shank 16A.

[0023] [Types of Power Sources] Figure 4 is a diagram for explaining the types of power sources 30 of the work machine 2 according to the embodiment. Each of the multiple work machines 2 has a power source 30. The power source 30 is mounted on the chassis of the work machine 2. The chassis of the excavator 2A is a revolving bed 9. The chassis of the bulldozer 2B is a chassis 13.

[0024] At the work site 3, a plurality of work machines 2 with different types of power sources 30 are in operation. In this embodiment, the types of power sources 30 include a fuel cell 31, a battery 32, and an engine 33. In the following description, a work machine 2 that uses a fuel cell 31 as its power source 30 will be referred to as an FC work machine 21, a work machine 2 that uses a battery 32 as its power source 30 will be referred to as a battery work machine 22, and a work machine 2 that uses an engine 33 as its power source 30 will be referred to as an ICE (Internal Combustion Engine) work machine 23, as appropriate.

[0025] As shown in Fig. 4, the types of power sources 30 of the respective work machines 2 of the same model may be different. The types of power sources 30 of the respective multiple excavators 2A may be different. The types of power sources 30 of the respective multiple bulldozers 2B may be different. The types of power sources 30 of the respective multiple dump trucks 2C may be different.

[0026] The fuel cell 31 operates by consuming hydrogen and oxygen as energy, and generates electricity by chemically reacting hydrogen, which is a fuel gas, with oxygen, which is an oxidizing gas.

[0027] The engine 33 operates by consuming fuel as energy. Examples of fuel consumed by the engine 33 include diesel oil, hydrogen, ammonia, and carbon-neutral fuel. Carbon-neutral fuel is a fuel that does not emit carbon dioxide (CO ), a type of greenhouse gas. ２ Carbon-neutral fuels are fuels that absorb carbon dioxide (CO ) from the atmosphere during the manufacturing process, and fuels that are manufactured from greenhouse gases. ２ ) and carbon dioxide (CO ２) and synthetic fuels produced by chemical synthesis. Examples of types of biofuels include FAME (Fatty Acid Methyl Ester) produced from plants or waste oil, and HVO (Hydrotreated Vegetable Oil) produced by hydrotreating waste oil or animal fat. Examples of types of synthetic fuels include hydrogen (H ) produced by renewable energy. ２ ) and carbon dioxide (CO ２ Examples include e-fuels produced by chemically synthesizing ethanol and natural gas, and gas-to-liquids (GTL) fuels produced from natural gas.

[0028] 5 is a configuration diagram showing an FC work machine 21 according to an embodiment. The FC work machine 21 has a fuel cell 31, a hydrogen port 40, a hydrogen supply device 41, an oxygen supply device 42, a drain pipe 43, a gas-liquid separator 44, a recovery tank 45, a power supply port 46, a DC / DC converter 35A, an inverter 36A, an electric motor 37A, and a hydraulic pump 38A.

[0029] The fuel cell 31 generates electricity by chemically reacting hydrogen, which is a fuel gas, with oxygen, which is an oxidizing gas, and has a stack structure in which a plurality of unit cells are stacked.

[0030] The hydrogen supply device 41 supplies hydrogen to the anode of the fuel cell 31. The hydrogen supply device 41 stores hydrogen. The hydrogen supply device 41 includes a hydrogen tank. The hydrogen supply device 41 is connected to the hydrogen port 40. Hydrogen is filled into the hydrogen supply device 41 from the hydrogen port 40.

[0031] The oxygen supply device 42 supplies air containing oxygen to the cathode of the fuel cell 31. The oxygen supply device 42 includes an air cleaner and an air compressor.

[0032] The drain pipe 43 is connected to the fuel cell 31. The gas-liquid separator 44 is disposed in the drain pipe 43. The gas-liquid separator 44 separates water from the water vapor discharged from the fuel cell 31. The water separated in the gas-liquid separator 44 is stored in a recovery tank 45. The water separated in the gas-liquid separator 44 may be discharged to the atmosphere.

[0033] The power supply port 46 is connected to the fuel cell 31. At least a portion of the power generated by the fuel cell 31 can be supplied to electronic devices external to the FC work machine 21 via the power supply port 46. Note that a rechargeable battery may be mounted on the FC work machine 21. The battery may be charged with the power generated by the fuel cell 31.

[0034] The DC / DC converter 35A boosts the voltage generated by the fuel cell 31. The DC / DC converter 35A supplies the direct current generated by the fuel cell 31 to the inverter 36A.

[0035] The inverter 36A converts the direct current from the DC / DC converter 35A into a three-phase alternating current and supplies it to the electric motor 37A. The electric motor 37A is driven based on the three-phase alternating current supplied from the inverter 36A.

[0036] The electric motor 37A is driven based on electric power from the inverter 36A. The hydraulic pump 38A is driven by the rotational force generated by the electric motor 37A. The hydraulic pump 38A discharges hydraulic oil. The hydraulic oil discharged from the hydraulic pump 38A is supplied to hydraulic actuators such as the work implement cylinder 12 and a swing motor and travel motor (not shown) provided on the FC work machine 21. Note that an electric actuator may be provided on the FC work machine 21 instead of a hydraulic actuator. When an electric actuator is provided on the FC work machine 21 instead of a hydraulic actuator, the hydraulic pump 38A is omitted.

[0037] 6 is a configuration diagram showing a battery work machine 22 according to an embodiment. The battery work machine 22 has a battery 32, a power receiving port 47, a charging device 48, a DC / DC converter 35B, an inverter 36B, an electric motor 37B, and a hydraulic pump 38B.

[0038] The battery 32 is an internal battery mounted on the battery work machine 22. The battery 32 is a rechargeable battery. The battery 32 includes a secondary battery. In this embodiment, the battery 32 includes a lithium ion battery (LiB).

[0039] The charging device 48 is connected to charging equipment provided outside the battery work machine 22 via the power receiving port 47. The charging device 48 includes an AC / DC converter. The charging device 48 may also include a DC / DC converter. The charging device 48 charges the battery 32 with power supplied from the charging equipment.

[0040] The DC / DC converter 35B boosts the voltage from the battery 32. The functions of the DC / DC converter 35B, the inverter 36B, the electric motor 37B, and the hydraulic pump 38B are the same as the functions of the DC / DC converter 35A, the inverter 36A, the electric motor 37A, and the hydraulic pump 38A described above, and therefore description thereof will be omitted.

[0041] [Control System] Figure 7 is a block diagram showing a control system 50 for a work machine 2 according to an embodiment. The work machine 2 is equipped with a controller 51 and an output device 60. The controller 51 includes a computer. The controller 51 has a processor 52, a storage device 53, an input / output interface 54, and a communication interface 55.

[0042] The processor 52 includes a CPU (Central Processing Unit). The processor 52 may also include a GPU (Graphics Processing Unit). The storage device 53 includes a recording medium on which computer programs and data are recorded so as to be readable by the processor 52. The storage device 53 includes a system memory such as a RAM (Random Access Memory) or a ROM (Read Only Memory), and an auxiliary storage device. Examples of the auxiliary storage device include a hard disk or a semiconductor memory.

[0043] The input / output interface 54 is connected to the output device 60. The processor 52 is connected to the output device 60 via the input / output interface 54. The communication interface 55 communicates with the remote control device 6 via the communication system 7. The processor 52 receives an operation signal from the remote control device 6 via the communication interface 55 and the communication system 7.

[0044] The output device 60 outputs output data. Examples of the output device 60 include a light-emitting device, a display device, and an audio output device. The light-emitting device outputs light-emitting data as the output data. The display device outputs display data as the output data. The audio output device outputs audio data as the output data.

[0045] The processor 52 includes a designation unit 52A and a control unit 52B. The designation unit 52A and the control unit 52B each include a computer program, an algorithm, and data executed by the processor 52. The storage device 53 includes a type data storage unit 53A.

[0046] The designation unit 52A designates the output form of the output device 60 based on the type of power source 30 of the work machine 2. Type data indicating the type of power source 30 is stored in advance in the type data storage unit 53A. The designation unit 52A designates the output form of the output device 60 based on the type data stored in the type data storage unit 53A. The type data storage unit 53A stores the type of power source 30 of the work machine 2 on which the type data storage unit 53A itself is mounted. The designation unit 52A designates the output form of the output device 60 based on the type of power source 30 of the work machine 2 on which the designation unit 52A itself is mounted. The control unit 52B outputs a control command to control the output device 60 so that the output device 60 operates in the output form designated by the designation unit 52A.

[0047] [Output Device] Fig. 8 is a diagram for explaining an output device 60 according to an embodiment. As shown in Fig. 8, in the excavator 2A, the output device 60 is arranged on the revolving unit 9. In the excavator 2A, at least a portion of the output device 60 is arranged on the outer surface of the revolving unit 9. In the embodiment, at least a portion of the output device 60 is arranged on the surface of the rear part of the revolving unit 9. In the bulldozer 2B, the output device 60 is arranged on the vehicle body 13. In the bulldozer 2B, at least a portion of the output device 60 is arranged on the outer surface of the vehicle body 13. In the embodiment, at least a portion of the output device 60 is arranged on the surface of the rear part of the vehicle body 13.

[0048] The output device 60 only needs to be arranged on the outer surface of the rotating body 9, and may be arranged on the side of the rotating body 9 (either or both of the left and right sides), or on the top surface of the rotating body 9.

[0049] The output device 60 outputs output data toward the outside of the body of the work machine 2. If the output device 60 is a light-emitting device, the light-emitting device outputs light-emitting data toward the outside of the work machine 2. In other words, the light-emitting device emits light toward the surroundings of the work machine 2. If the output device 60 is a display device, the display device outputs display data toward the outside of the work machine 2. In other words, the display screen of the display device is directed toward the surroundings of the work machine 2. Examples of display data include characters or figures that can identify the power source 30 of the work machine 2. If the output device 60 is an audio output device, the audio output device outputs audio data toward the outside of the body of the work machine 2. In other words, the audio output device outputs audio toward the surroundings of the work machine 2.

[0050] 8 shows an example in which the output device 60 is a light-emitting device. In the following description, the output device 60 will be referred to as the light-emitting device 60 as appropriate. The output form of the output device 60 includes the light-emitting form of the light-emitting device 60. The light-emitting device 60 includes, for example, a light-emitting diode (LED) or an electroluminescence light source (EL).

[0051] The light emitting surface of the light emitting device 60 is arranged on the surface of the body of the work machine 2. The light emitting surface of the light emitting device 60 is directed towards the periphery of the work machine 2. The designation unit 52A designates the light emission form of the light emitting device 60 based on the type of power source 30.

[0052] The FC work machine 21 is provided with a first light-emitting device 61 that emits light in a first light-emitting mode. The battery work machine 22 is provided with a second light-emitting device 62 that emits light in a second light-emitting mode. In this embodiment, the light-emitting mode includes a light color. The designation unit 52A of the FC work machine 21 designates emission of a first color light as the first light-emitting mode. The designation unit 52A of the battery work machine 22 designates emission of a second color light as the second light-emitting mode. The first color light and the second color light are different. The first color light is, for example, green light. The second color light is, for example, yellow. The control unit 52B of the FC work machine 21 outputs a control command to cause the first color light to be emitted from the first light-emitting device 61. The control unit 52B of the battery work machine 22 outputs a control command to cause the second color light to be emitted from the second light-emitting device 62.

[0053] Note that the work machine 2 may be provided with a light-emitting device 60 that is capable of emitting light in a plurality of light emission modes. For example, the work machine 2 may be provided with a light-emitting device 60 that is capable of emitting a plurality of different colored lights. The designation unit 52A designates the light-emitting mode of the output device 60 based on the type data stored in the type data storage unit 53A. The control unit 52B outputs a control command to control the output device 60 so that the output device 60 operates in the light-emitting mode designated by the designation unit 52A. For example, if the light-emitting device 60 is capable of emitting a first colored light, a second colored light, and a third colored light, and the designation unit 52A determines that the type of the work machine 2 is an FC work machine 21 based on the type data stored in the type data storage unit 53A, the designation unit 52A designates the light-emitting mode of the light-emitting device 60 so that the light-emitting device 60 emits the first colored light. If the designation unit 52A determines that the type of the work machine 2 is a battery work machine 22, the designation unit 52A designates the light-emitting mode of the light-emitting device 60 so that the light-emitting device 60 emits the second colored light.

[0054] Note that the work machine 2 may be provided with a plurality of light-emitting devices 60 capable of emitting light in mutually different light emission modes. For example, the work machine 2 may be provided with a plurality of light-emitting devices 60 capable of emitting light of mutually different colors. The designation unit 52A designates the light-emitting mode of the output device 60 based on the type data stored in the type data storage unit 53A. The control unit 52B selects an output device 60 capable of emitting light in the light-emitting mode designated by the designation unit 52A, and outputs a control command to control the selected output device 60. For example, if a first light-emitting device 60 capable of emitting a first color light, a second light-emitting device 60 capable of emitting a second color light, and a third light-emitting device capable of emitting a third color light are arranged on the work machine 2, and the designation unit 52A determines that the type of the work machine 2 is an FC work machine 21 based on the type data stored in the type data storage unit 53A, the designation unit 52A designates the light-emitting device 60 to be activated from the plurality of light-emitting devices 60 so that the first light-emitting device 60 emits the first color light. If it is determined that the type of work machine 2 is a battery work machine 22, the designation unit 52A designates the light-emitting device 60 to be activated from the plurality of light-emitting devices 60 so that the second light-emitting device 60 emits the second color light.

[0055] The output device 60 outputs output data during at least a portion of the period during which the work machine 2 is operating. The output device 60 outputs output data during at least a portion of the period during which the power source 30 of the work machine 2 is outputting power. The output device 60 outputs output data during at least a portion of the period during which the work machine 2 is working. The output device 60 outputs output data during at least a portion of the period during which the work machine 2 is traveling at the work site 3.

[0056] If the work machine 2 is an FC work machine 21 or an ICE work machine 23, the output device 60 may output output data when energy is refueled (when hydrogen is refueled or when fuel is refueled). If the work machine 2 is a battery work machine 22, the output device 60 may output output data when the battery 32 is being charged. Furthermore, the output device 60 may output output data when the key is turned on, when the key is turned off, when the power source 30 is started, or when the power source 30 is stopped.

[0057] [Control Method] Figure 9 is a flowchart showing a control method for the work machine 2 according to the embodiment. The designation unit 52A receives type data indicating the type of power source 30 from the type data storage unit 53A (step S1). The designation unit 52A designates the output mode of the output device 60 based on the type data acquired in step S1 (step S2). The control unit 52B outputs a control command to operate the output device 60 in the output mode designated in step S2 (step S3). The control unit 52B determines whether or not to terminate the operation of the output device 60 (step S4). If it is determined in step S4 that the operation of the output device 60 should be terminated (step S4: Yes), the control unit 52B terminates the operation of the output device 60. If it is determined in step S4 that the operation of the output device 60 should be terminated (step S4: No), the controller 51 returns to the processing of step S2.

[0058] The control unit 52B may determine whether to terminate the operation of the output device 60 based on, for example, whether the key is on or off, whether the power source 30 is started, or whether the power source 30 is stopped.

[0059] [Effects] As described above, according to the embodiment, the light emission mode of the light-emitting device 60 of the work machine 2 is specified based on the type of power source 30 of that work machine 2. The first light-emitting device 61 of the FC work machine 21 operates in a first light-emitting state. The second light-emitting device 62 of the battery work machine 22 operates in a second light-emitting state. Although not shown, the light-emitting device of the ICE work machine 23 operates in a third light-emitting state. The designation unit 52A of the ICE work machine 23 specifies the emission of a third color light as the third light-emitting mode. The third color light is, for example, red light. The first light-emitting mode, the second light-emitting mode, and the third light-emitting mode are mutually different. Because the light-emitting mode of the light-emitting device 60 differs depending on the type of power source 30, the type of power source 30 of the work machine 2 can be easily distinguished.

[0060] In this embodiment, the light-emitting device 60 emits light toward the outside of the work machine 2. At least a portion of the light-emitting device 60 is arranged on the outer surface of the body of the work machine 2. Because light is emitted from the light-emitting device 60 into the surroundings of the work machine 2, workers at the work site 3 can distinguish the type of power source 30 of the work machine 2 by checking the light-emitting device 60 from outside the work machine 2.

[0061] When work machines 2 with different types of power sources 30 are mixed at one work site 3, workers at the work site 3 can distinguish the types of power sources 30 of the work machines 2 by checking the light emission form of the light-emitting device 60. This allows the workers at the work site 3 to adjust the allocation of work to each of the multiple work machines 2 and take measures to ensure the smooth operation of each of the multiple power sources 30 of different types. This prevents a decrease in work efficiency at the work site 3.

[0062] 10 , 11 , and 12 are diagrams illustrating the light emission form of the light-emitting device 60 according to the embodiment. In the above-described embodiment, the light emission form of the light-emitting device 60 is the light emission color. The light emission form may be the light emission intensity of the light-emitting device 60, the light emission range (light-emitting area) of the light-emitting device 60, or the continuous light emission time of the light-emitting device 60. Instead of the light emission color, at least one of the light emission intensity, light emission range, and continuous light emission time may be changed based on the type of work machine 2. As shown in FIG. 10 , the light emission intensity of the light-emitting device 60 of the FC work machine 21 may be high, and the light emission intensity of the light-emitting device 60 of the battery work machine 22 may be low. As shown in FIG. 11 , the light-emitting range of the light-emitting device 60 of the FC work machine 21 may be wide, and the light-emitting area of ​​the light-emitting device 60 of the battery work machine 22 may be narrow. As shown in FIG. 12 , the continuous light emission time of the light-emitting device 60 of the FC work machine 21 may be long, and the continuous light emission time of the light-emitting device 60 of the battery work machine 22 may be short. For example, the light emitting device 60 of the FC work machine 21 may be continuously lit, and the light emitting device 60 of the battery work machine 22 may be intermittently lit (blinking). In addition to changing the light color, at least one of the light emission intensity, light emission range, and continuous light emission time may be changed based on the type of work machine 2.

[0063] 13 is a diagram illustrating the light-emitting mode of the light-emitting device 60 according to the embodiment. The designator 52A may designate the light-emitting mode of the light-emitting device 60 based on the remaining amount of energy in the power source 30. In a battery-powered work machine 22, when the remaining capacity of the battery 32 is high, the light-emitting device 60 may emit light in a first light-emitting mode, and when the remaining capacity of the battery 32 is low, the light-emitting device 60 may emit light in a second light-emitting mode different from the first light-emitting mode. When the remaining capacity of the battery 32 is high, for example, a first color light may be emitted from the light-emitting device 60, and when the remaining capacity of the battery 32 is low, the light-emitting device 60 may emit a second color light. In an FC work machine 21, when the remaining amount of hydrogen stored in the hydrogen supply device 41 is high, the light-emitting device 60 may emit light in the first light-emitting mode, and when the remaining amount of hydrogen is low, the light-emitting device 60 may emit light in a second light-emitting mode different from the first light-emitting mode. For example, when the remaining amount of hydrogen is large, a first color light may be emitted from the light-emitting device 60, and when the remaining amount of hydrogen is small, a second color light may be emitted from the light-emitting device 60. In the ICE work machine 23, when the remaining amount of fuel stored in the fuel tank is large, the light-emitting device 60 may emit light in a first light-emitting form, and when the remaining amount of fuel is small, the light-emitting device 60 may output output data in a second light-emitting form different from the first light-emitting form. When the remaining amount of fuel is large, for example, the first color light may be emitted from the light-emitting device 60, and when the remaining amount of fuel is small, the light-emitting device 60 may emit the second color light.

[0064] FIG. 14 is a diagram illustrating the light emission form of the light-emitting device 60 according to the embodiment. As described above, the power source 30 operates by consuming energy. The difference in the type of power source 30 may be the difference in the type of energy. In the ICE work machine 23, when diesel fuel is used, the light-emitting device 60 may emit light in a first light emission form, and when a carbon-neutral fuel is used, the light-emitting device 60 may emit light in a second light emission form different from the first light emission form. When the fuel is diesel fuel, for example, a first color light may be emitted from the light-emitting device 60, and when the fuel is a carbon-neutral fuel, a second color light may be emitted from the light-emitting device 60. When a fuel sensor capable of detecting the type of fuel is mounted on the work machine 2, the designation unit 52A can designate the light emission form of the light-emitting device 60 based on detection data from the fuel sensor.

[0065] FIG. 15 is a diagram for explaining the output form of the output device 60 according to the embodiment. In the above-described embodiment, the output device is the light-emitting device 60. The output device may also be an audio output device 600. The audio output device 600 includes, for example, a speaker. The designation unit 52A may designate the audio output form of the audio output device 600 as the output form. For example, first audio data may be output from the audio output device 600 of the FC work machine 21, and second audio data different from the first audio data may be output from the audio output device 600 of the battery work machine 22. For example, first audio data indicating that the machine is an FC work machine 21 may be output from the audio output device 600, and second audio data indicating that the machine is a battery work machine 22 may be output from the audio output device 600. The audio data includes sound. The designation unit 52A changes the audio output form based on the type of work machine 2. The audio output form includes the volume of the sound and the continuous output time of the sound. For example, if the work machine 2 is an FC work machine 21, a sound of a first volume may be output from the audio output device 600, and if the work machine 2 is a battery work machine 22, a sound of a second volume may be output from the audio output device 600. If the work machine 2 is an FC work machine 21, a continuous sound may be output from the audio output device 600, and if the work machine 2 is a battery work machine 22, an intermittent sound may be output from the audio output device 600.

[0066] FIG. 16 is a diagram showing an FC work machine 21 and a battery work machine 22 according to an embodiment. As shown in FIG. 16 , a transport vehicle 80 equipped with a plurality of hydrogen tanks 70 is placed at a work site 3. The hydrogen tanks 70 are connected to the hydrogen port 40 of the FC work machine 21 by a supply tube 71. The power supply port 46 of the FC work machine 21 is connected to the power receiving port 47 of the battery work machine 22 by a power supply arm 72. The hydrogen port 40 is placed on the first side surface 9L (left surface) of the revolving unit 9. The power supply port 46 is placed on the second side surface 9R (right surface) of the revolving unit 9 opposite the first side surface 9L. The fuel cell 31 of the FC work machine 21 generates electricity using hydrogen supplied from the hydrogen tank 70 via the supply tube 71. The electricity generated by the fuel cell 31 is supplied to the battery 32 of the battery work machine 22 via the power supply port 46, the power supply arm 72, and the power receiving port 47. The battery 32 is charged by the power supplied from the fuel cell 31 .

[0067] The first light-emitting device 61 of the FC working machine 21 emits light in a first light-emitting mode, and the second light-emitting device 62 of the battery working machine 22 emits light in a second light-emitting mode. Because the light-emitting mode of the first light-emitting device 61 and the light-emitting mode of the second light-emitting device 62 are different, it is possible to prevent, for example, the supply tube 71 from being mistakenly attached to the power receiving port 47 or the power supply arm 72 from being mistakenly attached to the hydrogen port 40.

[0068] In the above-described embodiment, the output device 60 may be a rotating warning light arranged on the upper part of the rotating unit 9. A first rotating warning light that emits a first color light (e.g., green light), a second rotating warning light that emits a second color light (e.g., yellow light), and a third rotating warning light that emits a third color light (e.g., red light) may be arranged on the rotating unit 9. Of the multiple (three) rotating warning lights, the rotating warning light to be turned on may be specified based on the type of power source 30 of the work machine 2. The rotating warning light may be considered to be a light-emitting device or a display device.

[0069] In the above-described embodiment, the power source 30 of the ICE work machine 23 may be the engine 33 alone, a hybrid power source that combines the engine 33 with a battery, or a diesel-electric power source in which the engine 33 drives a generator.

[0070] In the above-described embodiment, the work machine 2 is remotely controlled by the remote control device 6. An operator may board the work machine 2 and operate an operation device arranged on the work machine 2 to operate the work machine 2. The work machine 2 may also be an autonomous work machine that operates autonomously without being operated by an operator.

[0071] 1...Management system, 2...Construction machine, 2A...Shovel, 2B...Bulldozer, 2C...Dump truck, 3...Work site, 4...Remote control room, 5...Information terminal, 6...Remote control device, 7...Communication system, 8...Management server, 9...Slewing body, 9L...First side, 9R...Second side, 10...Traveling body, 10A...Crawler, 11...Construction machine, 11A...Boom, 11B...Arm, 11C...Bucket, 12...Construction machine cylinder, 12 A...Boom cylinder, 12B...Arm cylinder, 12C...Bucket cylinder, 13...Vehicle body, 14...Travel body, 14A...Crawler track, 15...Excavation work machine, 15A...Excavation blade, 16...Ripper work machine, 16A...Shank, 17...Work machine cylinder, 18...Ripper cylinder, 21...FC work machine, 22...Battery work machine, 23...ICE work machine, 30...Power source, 31...Fuel cell, 32...Battery, 33 ...Engine, 35A...DC / DC converter, 35B...DC / DC converter, 36A...inverter, 36B...inverter, 37A...electric motor, 37B...electric motor, 38A...hydraulic pump, 38B...hydraulic pump, 40...hydrogen port, 41...hydrogen supply device, 42...oxygen supply device, 43...drain pipe, 44...gas-liquid separator, 45...recovery tank, 46...power supply port, 47...power receiving port, 48...charging device, 50...control system, 51...controller, 52...processor, 52A...designation unit, 52B...control unit, 53...storage device, 53A...type data storage unit, 54...input / output interface, 55...communication interface, 60...output device, 61...first light-emitting device, 62...second light-emitting device, 70...hydrogen tank, 71...supply tube, 72...power supply arm, 80...transport vehicle, 600...audio output device.

Claims

1. A work machine comprising: a power source; an output device that outputs output data; and a processor, wherein the processor specifies an output form of the output device based on the type of the power source, and outputs a control command so that the output device operates in the output form.

2. A work machine according to claim 1, comprising a vehicle body on which the power source is mounted, and the output device outputs output data to the outside of the vehicle body.

3. The work machine according to claim 1, further comprising a body on which the power source is mounted, and at least a portion of the output device is disposed on an outer surface of the body.

4. A work machine according to claim 1, further comprising a storage device that stores type data indicating the type of said power source, and said processor specifies said output form based on said type data.

5. The work machine according to claim 1, wherein the output device includes a light-emitting device, and the processor specifies the light-emitting mode of the light-emitting device as the output mode.

6. The work machine according to claim 5, wherein the light emission form includes at least one of light emission color, light emission intensity, light emission range, and continuous light emission time.

7. The work machine according to claim 1, wherein the processor specifies the output form based on the remaining amount of energy in the power source.

8. The work machine according to claim 1, wherein the power source operates by consuming energy, and the type of the power source includes the type of energy.

9. The work machine according to claim 1, wherein the output device includes an audio output device, and the processor specifies the audio output form of the audio output device as the output form.

10. A control method for a work machine, comprising: specifying an output configuration for an output device disposed on the exterior surface of a body of the work machine based on the type of power source of the work machine; and outputting a control command so that the output device operates in the specified output configuration.

Images