WO2022210612A1 - アスファルトフィニッシャ、及びアスファルトフィニッシャの施工支援システム - Google Patents
アスファルトフィニッシャ、及びアスファルトフィニッシャの施工支援システム Download PDFInfo
- Publication number
- WO2022210612A1 WO2022210612A1 PCT/JP2022/015206 JP2022015206W WO2022210612A1 WO 2022210612 A1 WO2022210612 A1 WO 2022210612A1 JP 2022015206 W JP2022015206 W JP 2022015206W WO 2022210612 A1 WO2022210612 A1 WO 2022210612A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- asphalt finisher
- dump truck
- control command
- speed
- controller
- Prior art date
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 271
- 238000010276 construction Methods 0.000 title claims description 61
- 239000000463 material Substances 0.000 claims abstract description 49
- 230000007480 spreading Effects 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 65
- 238000003384 imaging method Methods 0.000 description 62
- 238000000034 method Methods 0.000 description 28
- 238000001514 detection method Methods 0.000 description 26
- 230000001133 acceleration Effects 0.000 description 16
- 230000032258 transport Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 10
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000010365 information processing Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000060 site-specific infrared dichroism spectroscopy Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/004—Devices for guiding or controlling the machines along a predetermined path
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
- E01C2301/02—Feeding devices for pavers
- E01C2301/04—Independent shuttles
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
- E01C2301/02—Feeding devices for pavers
- E01C2301/08—Pushing devices for lorries
Definitions
- the present invention relates to an asphalt finisher and an asphalt finisher construction support system.
- a tractor Conventionally, a tractor, a hopper installed on the front side of the tractor to receive the pavement material, a conveyor for feeding the pavement material in the hopper to the rear side of the tractor, and a pavement material fed by the conveyor on the rear side of the tractor.
- An asphalt finisher is known which includes a spreading screw and a screed for spreading the pavement material spread by the screw behind the screw.
- the asphalt finisher When the asphalt finisher performs construction, there is a transport vehicle (for example, a dump truck) that transports the pavement material in front of the asphalt finisher.
- the pavement material is supplied to the asphalt finisher from the transportation vehicle.
- the asphalt finisher must be continuously constructed. Therefore, after reaching a position where the pavement material can be supplied to the asphalt finisher, the transport vehicle must move forward together with the asphalt finisher to continue the construction of the asphalt finisher.
- the operator of the asphalt finisher sounds the horn to notify the driver of the transportation vehicle of the timing of starting the asphalt finisher.
- the driver of the transportation vehicle controls the starting and stopping of the transportation vehicle while listening to the horn to confirm the movement of the asphalt finisher.
- the load of the transport vehicle on the asphalt finisher (the load applied to the asphalt finisher when pushing forward the transport vehicle in contact with the front edge of the asphalt finisher) fluctuates, the surface of the completed road will change. quality may deteriorate. Therefore, it is preferable to control the transportation vehicle so that the asphalt finisher and the transportation vehicle do not come into contact with each other.
- An asphalt finisher includes a tractor, a hopper installed on the front side of the tractor, a conveyor that conveys the pavement material in the hopper to the rear side of the tractor, and a pavement material that is conveyed by the conveyor and scattered on the road surface.
- the asphalt finisher synchronizes the operation of the transportation vehicle so as to correspond to the operation of the asphalt finisher, thereby suppressing deterioration of the quality of the paved surface.
- FIG. 1A is a left side view showing an asphalt finisher and a dump truck, which are examples of road machinery according to the first embodiment.
- FIG. 1B is a top view showing an asphalt finisher and a dump truck, which are examples of road machinery according to the first embodiment.
- FIG. 2 is a block diagram showing configurations of an asphalt finisher and a dump truck according to the first embodiment.
- FIG. 3 is a diagram showing a processing procedure performed by the asphalt finisher according to the first embodiment.
- FIG. 4 is a top view of a construction site showing a first movement path and a second movement path generated by a path generator for constructing a curve in a road.
- FIG. 5A is a diagram showing a case where the distance between the respective vehicle parts between the rear wheels of the dump truck and the rollers of the asphalt finisher is "0" according to the first embodiment.
- FIG. 5B is a diagram showing a case where the distance between the respective vehicle parts between the rear wheels of the dump truck and the rollers of the asphalt finisher is a predetermined distance "A" according to the first embodiment; be.
- FIG. 5C represents the case where the distance between the respective vehicle parts between the rear wheels of the dump truck and the rollers of the asphalt finisher is the reference distance "A/2" according to the first embodiment. It is a concept.
- FIG. 1 is a diagram showing an asphalt finisher 100 and a dump truck 200, which are examples of road machinery according to the first embodiment. Specifically, FIG. 1A is a left side view and FIG. 1B is a top view. FIG. 1 shows an example in which the dump truck 200 approaches the asphalt finisher 100 while reversing.
- the asphalt finisher 100 is mainly composed of a tractor 1, a hopper 2, and a screed device 3.
- the screed device 3 is a mechanism for spreading pavement material evenly.
- the screed device 3 is a floating screed device that is towed by the tractor 1 and is connected to the tractor 1 via leveling arms 3a.
- the hopper 2 is provided on the front side of the tractor 1 as a mechanism for receiving pavement material.
- the hopper 2 of this embodiment has a mechanism that can be opened and closed in the vehicle width direction by the hopper cylinder 2a about the movable mechanism portions 81a and 81b.
- the asphalt finisher 100 fully opens the hopper 2 and removes the pavement material from the loading platform 201 of the dump truck 200 as a pavement material transport vehicle. (for example, asphalt mixture) is acceptable. Then, the pavement material is supplied from the loading platform 201 of the dump truck 200 to the hopper 2 while the dump truck 200 is in contact with the asphalt finisher 100 .
- the asphalt finisher 100 continues traveling (construction) while moving in the traveling direction together with the dump truck 200.
- a conveyor transports the paving material received in the hopper 2 to the rear side of the tractor 1 .
- the screw spreads the pavement material conveyed by the conveyor and scattered on the road surface in the width direction of the vehicle.
- the screed device 3 evenly spreads the pavement material spread by the screw behind the screw.
- the operator of the asphalt finisher 100 After receiving the pavement material from the loading platform 201 of the dump truck 200, the operator of the asphalt finisher 100 gradually closes the hopper 2 so that the pavement material supplied to the hopper 2 can be placed on the conveyor. After that, when the pavement material supplied to the hopper 2 is conveyed backward and the pavement material in the hopper 2 is almost exhausted, the operator opens the hopper 2 . Then, when the hopper 2 is fully opened again, the hopper 2 can receive pavement material from the dump truck 200 . Therefore, it is preferable for the driver of the dump truck 200 to bring the dump truck 200 closer to the asphalt finisher 100 after confirming that the hopper 2 is fully opened.
- the asphalt finisher 100 is equipped with a roller 2b.
- the roller 2b is installed in front of the hopper 2. As shown in FIG.
- the roller 2b is configured to contact the rear wheel 202 of the dump truck 200, and can rotate together with the rear wheel 202 when the rear wheel 202 of the dump truck 200 is in contact.
- the tractor 1 is a mechanism for running the asphalt finisher 100.
- the tractor 1 moves the asphalt finisher 100 by rotating the front wheels and the rear wheels using the traveling hydraulic motor.
- the travel hydraulic motor rotates by being supplied with hydraulic oil from the hydraulic source.
- the tractor 1 may have crawlers instead of wheels.
- the tractor 1 is equipped with a controller 30, a wireless communication device 40, a GPS module 50, a main monitor 60, a driver's seat 61, an imaging device 62, an audio output device 63, and the like.
- a cab including a main monitor 60 and a driver's seat 61 is installed on the upper surface of the tractor 1 .
- An imaging device 62 and an audio output device 63 are installed on the upper surface of the tractor 1 at the center of the front end.
- the wireless communication device 40 performs short-range wireless communication directly with devices existing around the asphalt finisher 100, such as the dump truck 200 and the like.
- Wi-Fi registered trademark
- the wireless communication standard of the wireless communication device 40 may be used as the wireless communication standard of the wireless communication device 40 .
- the wireless communication of the present embodiment is not limited to the method using Wi-Fi (registered trademark), and wireless LAN, Bluetooth (registered trademark), or the like may be used.
- the GPS module 50 is an example of a GNSS (Global Navigation Satellite System) module, and receives position information indicating the results of two-dimensional positioning by the GPS (Global Positioning System).
- the position information includes information representing the position of the asphalt finisher 100 in latitude and longitude.
- GPS Global Navigation Satellite System
- the position information includes information representing the position of the asphalt finisher 100 in latitude and longitude.
- an example using GPS as a method for acquiring position information will be described, but the method for acquiring position information is not limited, and other well-known methods may be used.
- the main monitor 60 is a device that displays various information to the operator of the asphalt finisher 100 .
- the main monitor 60 is a liquid crystal display and can display various information according to commands from the controller 30 .
- the main monitor 60 also includes an input device 60 a that receives an operation input from an operator of the asphalt finisher 100 .
- the imaging device 62 is a device that acquires an image of the space in front of the asphalt finisher 100 .
- the imaging device 62 is a camera, and outputs the acquired image to the controller 30 .
- the imaging device 62 may be a distance image camera, an infrared camera, a stereo camera, or the like.
- an example using an imaging device 62 as an example of a device capable of recognizing space will be described.
- this embodiment does not limit the space recognition device to the imaging device 62 .
- any space recognition device that can recognize the space based on the asphalt finisher 100 may be used, and for example, a laser sensor or the like may be used.
- An imaging device 62 (an example of a detection device) according to the present embodiment photographs a space within an imaging area RA1 (an example of a detection range) that exists in front of the asphalt finisher 100 and is indicated by a dashed line in FIGS. 1A and 1B. .
- the imaging device 62 then outputs image information (an example of detection information) regarding the captured image to the controller 30 .
- image information an example of detection information
- the imaging device 62 can image the dump truck 200 existing within the imaging area RA1.
- the audio output device 63 is a device that outputs audio to the surroundings of the asphalt finisher 100 .
- the audio output device 63 is a speaker that outputs audio toward the front of the asphalt finisher 100 , and can output an alarm according to a command from the controller 30 .
- the voice output device 63 may output a voice message.
- the controller 30 is a control device that controls the asphalt finisher 100 .
- the controller 30 is configured by a computer, for example, and has a CPU, an internal memory, a storage medium, and the like.
- the controller 30 performs various controls by causing the CPU to execute programs stored in a storage medium.
- the controller 30 can assist the driving operation of the asphalt finisher 100 by ADAS (advanced driver-assistance systems) based on image information received from the imaging device 62 and detection signals received from various detection sensors (not shown).
- ADAS advanced driver-assistance systems
- the driving operation support system used by the controller 30 according to the present embodiment is not limited to the ADAS driving operation system, and may be another driving operation support system.
- the controller 30 may use AD (Autonomous Driving).
- any system may be used as the controller 30 as long as it is a system capable of controlling the movement of the asphalt finisher 100 according to a previously generated movement route.
- the dump truck 200 is composed of a loading platform 201, a hoist cylinder (not shown), a first imaging device 261, a second imaging device 262, a controller 230, and a wireless communication device 240.
- the loading platform 201 can be loaded with pavement material to be supplied to the hopper 2 of the asphalt finisher 100 .
- the hoist cylinder is a mechanism for tilting the loading platform 201 rearward, and by expanding and contracting according to a command from the controller 230, switches between a tilted state in which the loading platform 201 is tilted rearward and a horizontal state in which the loading platform 201 is horizontal.
- the first imaging device 261 is, for example, a device that is provided near the emblem of the dump truck 200 and acquires an image of the space in front of the dump truck 200 .
- the second imaging device 262 is a device that acquires an image of the space behind the dump truck 200 .
- the first imaging device 261 and the second imaging device 262 are cameras, and output the acquired images to the controller 230 .
- the first imaging device 261 and the second imaging device 262 may be a distance image camera, an infrared camera, a stereo camera, or the like. In this embodiment, an example using a first imaging device 261 and a second imaging device 262 as an example of a device capable of recognizing space will be described.
- this embodiment does not limit the space recognition device to the first imaging device 261 and the second imaging device 262 .
- any space recognition device capable of recognizing the space with the dump truck 200 as a reference may be used.
- a laser sensor or the like may be used.
- the first imaging device 261 captures an image of the space in the imaging region RT1 that exists in front of the dump truck 200 and is indicated by the chain double-dashed lines in FIGS. 1A and 1B.
- the first imaging device 261 outputs image information regarding the captured image to the controller 230 .
- the second image capturing device 262 captures an image of the space in the image capturing area RT2 indicated by the two-dot chain line in FIGS. 1A and 1B, which exists behind the dump truck 200.
- FIG. The second imaging device 262 outputs image information regarding the captured image to the controller 230 .
- the wireless communication device 240 performs wireless communication with devices existing around the dump truck 200, such as the wireless communication device 40 of the asphalt finisher 100, for example.
- Wi-Fi registered trademark
- the wireless communication standard of the wireless communication device 240 may be used as the wireless communication standard of the wireless communication device 240 .
- the wireless communication of the present embodiment is not limited to the method using Wi-Fi (registered trademark), and wireless LAN, Bluetooth (registered trademark), or the like may be used.
- the controller 230 is a control device that controls the dump truck 200 .
- the controller 230 is configured by a computer, for example, and has a CPU, an internal memory, a storage medium, and the like.
- the controller 230 performs various controls by causing the CPU to execute programs stored in a storage medium.
- the controller 230 can assist the driving operation of the dump truck 200 .
- the driving operation support system used by the controller 230 according to this embodiment is not limited to the ADAS driving operation system, and may be another driving operation support system.
- controller 230 may use AD.
- any system may be used as the controller 230 as long as it can control the movement according to the movement route and various control commands.
- the control command of the present embodiment is information representing an instruction to control movement of a vehicle (for example, the asphalt finisher 100 or the dump truck 200).
- the controller 230 implements control to stop the dump truck 200 near the hopper 2 of the asphalt finisher 100 by ADAS parking assistance.
- the controller 230 of the present embodiment may receive a control command from the asphalt finisher 100 via the wireless communication device 240 and perform drive control of the dump truck 200 based on the received control command.
- the asphalt finisher 100 is normally under construction. Therefore, after the dump truck 200 is positioned near the hopper 2 of the asphalt finisher 100, while the dump truck 200 is supplying the pavement material from the loading platform 201 to the hopper 2, the dump truck 200 is driven together with the asphalt finisher 100. need to run.
- the controller 30 of the asphalt finisher 100 performs control to synchronize the operation of the dump truck 200 with the operation of the asphalt finisher 100 .
- the controller 30 of the asphalt finisher 100 generates a first movement path for the asphalt finisher 100 for moving the asphalt finisher 100 so as to pave the construction target area based on the construction plan. do.
- the controller 30 then controls the asphalt finisher 100 to follow the first movement path.
- the construction plan that can be stored in the storage medium of the controller 30 includes information indicating the area to be constructed by the asphalt finisher 100 in the reference coordinate system.
- the reference coordinate system used in construction plan drawings is, for example, the world geodetic system.
- the origin is at the center of gravity of the earth
- the X axis is latitude (X axis) passing through the intersection of the Greenwich meridian and the equator and the origin, and the intersection of the meridian of 90 degrees east longitude and the equator and the origin.
- the construction plan includes information indicating the construction target area in a three-dimensional orthogonal XYZ coordinate system (world geodetic system).
- the construction plan drawing may contain various information regarding the area to be constructed.
- the construction plan drawing may include information indicating the positions of obstacles existing in the construction target area.
- As an obstacle for example, there is step information existing on the road surface.
- the step information is, for example, information about manholes existing on the road surface.
- the asphalt finisher 100 acquires position information indicating the position of the asphalt finisher 100 in latitude and longitude via the GPS module 50 . Therefore, the controller 30 of the asphalt finisher 100 can specify the position indicated by the position information acquired by the GPS module 50 on the construction plan.
- the controller 30 controls the dump truck 200 so that the dump truck 200 travels in a state in which the loading platform 201 of the dump truck 200 and the hopper 2 of the asphalt finisher 100 are maintained in an overlapping state (in other words, in a synchronized state). , a second movement path for the dump truck 200 is generated. The controller 30 then generates a control command that instructs the steering angle, speed, etc. of the dump truck 200 so that the dump truck 200 travels along the second movement path. The controller 30 then transmits the generated control command to the wireless communication device 240 of the dump truck 200 via the wireless communication device 40 . Thereby, the controller 30 synchronizes the operation of the dump truck 200 to correspond to the operation of the asphalt finisher 100 .
- FIG. 2 is a block diagram showing the configurations of the asphalt finisher 100 and the dump truck 200 according to this embodiment.
- the dump truck 200 includes a first imaging device 261, a second imaging device 262, an input device 263, a controller 230, a wireless communication device 240, and a drive system controller 250. ing. That is, in the present embodiment, in the asphalt finisher construction support system including the asphalt finisher 100 and the dump truck 200, the controller 30 controls the operation of the dump truck 200 and the operation of the asphalt finisher 100 to be synchronized. This is an example of performing
- the controller 230 receives image information from a first imaging device 261 (for example, provided near the emblem on the front surface of the dump truck 200) and a second imaging device 262 (for example, provided at the rear end of the dump truck 200).
- a control command for drive control is generated on the basis of image information from and a control signal from a detection sensor (not shown). Controller 230 then outputs the generated control command to drive system controller 250 .
- the controller 230 realizes support for driving operation by ADAS.
- the drive system controller 250 controls the drive system, engine, etc. of the dump truck 200 according to the control command.
- controller 230 performs various controls by receiving operations from the driver via the input device 263 .
- the controller 230 When receiving a control command from the asphalt finisher 100 via the wireless communication device 240 , the controller 230 outputs the received control command to the driving system controller 250 . As a result, the dump truck 200 realizes driving operation assistance by ADAS according to the request from the asphalt finisher 100 .
- controller 230 may transmit image information captured by the first imaging device 261 and image information captured by the second imaging device 262 to the asphalt finisher 100 via the wireless communication device 240 .
- the asphalt finisher 100 includes an imaging device 62, an input device 60a, a controller 30, a drive system controller 55, and a wireless communication device 40.
- the drive system controller 55 controls the tractor 1 according to the control command.
- the controller 30 assists driving operations by ADAS (advanced driver-assistance systems) based on image information received from the imaging device 62 and detection signals received from various detection sensors (not shown). make it possible. It should be noted that the controller 30 according to the present embodiment is not limited to driving operation assistance by ADAS, and may utilize other driving operation assistance. For example, the controller 30 may use AD (Autonomous Driving).
- AD Autonomous Driving
- the controller 30 of the present embodiment receives input of construction plan drawings via a connection I/F (not shown) or the wireless communication device 40 .
- the controller 30 performs various controls in order to move the asphalt finisher 100 and the dump truck 200 through the construction target area based on the construction plan and the like.
- each functional block included in the controller 30 shown in FIG. 2 is conceptual and does not necessarily have to be physically configured as shown. All or part of each functional block may be functionally or physically distributed and integrated in arbitrary units. Each processing function performed in each functional block is implemented by a program executed by the CPU, in whole or in part. Alternatively, each functional block may be implemented as hardware by wired logic. As shown in FIG. 2, the controller 30 includes a dump truck identification information storage unit 31, an acquisition unit 32, a route generation unit 33, a detection unit 34, a determination unit 35, a command generation unit 36, and a communication control unit. a portion 37;
- the dump truck identification information storage unit 31 is provided on a storage medium within the controller 30 .
- the dump truck identification information storage unit 31 stores information for identifying the dump truck 200 with which the asphalt finisher 100 communicates.
- the dump truck identification information storage unit 31 stores license plate information of the dump truck 200 and identification information (for example, SSID) of the wireless communication device 240 mounted on the dump truck 200 in association with each other.
- the controller 30 can specify the wireless communication device 240 to be communicated with based on the captured license plate when the imaging device 62 captures an image of the rear portion of the dump truck 200 .
- the acquisition unit 32 acquires image information captured by the imaging device 62 .
- the acquisition unit 32 also acquires operation information from the operator via the input device 60a.
- the acquisition unit 32 acquires construction plan drawings.
- the acquisition unit 32 may acquire the construction plan drawing from a non-volatile storage medium connected via a connection I/F (eg, USB I/F) not shown.
- the acquisition unit 32 may acquire the construction plan drawing received by the communication control unit 37 from an external device via the wireless communication device 40 .
- the route generation unit 33 generates the movement routes of the asphalt finisher 100 and the dump truck 200 based on the construction plans acquired by the acquisition unit 32 .
- the movement route is generated after the construction plan drawing is obtained and before construction by the asphalt finisher 100 is started.
- the route generation unit 33 can generate a movement route including the start position of the construction of the asphalt finisher 100 .
- the route generation unit 33 of the present embodiment generates the first movement route of the asphalt finisher 100 so that construction can be performed on the entire construction target area shown in the construction plan. Furthermore, the route generation unit 33 generates a second movement route for the dump truck 200 when traveling in contact with the asphalt finisher 100 traveling along the first movement route.
- the route generation unit 33 determines that the asphalt finisher 100 and the wheels of the dump truck 200 cannot pass through the stepped area. A first movement path and a second movement path are generated so as not to occur.
- the detection unit 34 detects a transport vehicle such as a dump truck 200 existing in front of the asphalt finisher 100 based on the image information acquired from the imaging device 62 . Any technique, including known image processing techniques, may be used to detect the transportation vehicle such as the dump truck 200 from the image indicated by the image information.
- the detection unit 34 may detect other objects when detecting a transportation vehicle or the like from the image. Other objects may include, for example, road cones, people (such as workers), and small machines (such as rammers, tampers, etc.).
- the determination unit 35 recognizes (detects) an object existing around the asphalt finisher 100 (an example of a working machine) based on the image information (output value) of the imaging device 62, which is a type of space recognition device.
- Objects to be recognized are, for example, the dump truck 200, topographical shapes (slopes, holes, etc.), electric wires, utility poles, people, animals, vehicles, construction machines, buildings, walls, helmets, safety vests, work clothes, or , a predetermined mark on the helmet, and the like.
- the determination unit 35 may be configured to identify at least one of the type, position, shape, and the like of an object.
- the determination unit 35 may be configured to distinguish between the dump truck 200 and objects other than the dump truck.
- the determination unit 35 makes various determinations based on image information (an example of detection information) from an imaging device 62 (an example of a detection device).
- the determination unit 35 determines the license plate information of the dump truck 200 located in front of the asphalt finisher 100 based on the image information from the imaging device 62 . Thereby, the determination unit 35 can identify the license plate information of the dump truck 200 to be controlled.
- the determination unit 35 may determine the distance between the dump truck 200 and the asphalt finisher 100.
- the determination unit 35 according to the present embodiment has a correspondence relationship between the size of the dump truck 200 shown in the image and the distance between the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100. there is Thereby, the determination unit 35 can identify the distance between the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100 from the image information acquired by the acquisition unit 32 .
- the determination unit 35 determines whether or not the loading platform 201 of the dump truck 200 can be positioned at the designated position.
- the specified position is the position of the platform 201 suitable for transferring the pavement material on the platform 201 into the hopper 2, and the position partially overlapping the position of the hopper 2 of the asphalt finisher 100 in the vertical direction.
- the specified position is a position that moves as the asphalt finisher 100 moves.
- Information about the specified position is typically pre-stored in the storage medium of the controller 30 . In this embodiment, the information about the specified position is information about a rectangular area having substantially the same size (area) as the loading platform 201 when viewed from above.
- the information about the designated position is information about a rectangular parallelepiped space having substantially the same size (volume) as the loading platform 201 . Therefore, "positioning the bed 201 of the dump truck 200 at the specified position" means, for example, matching the rectangular area corresponding to the actual bed 201 with the rectangular area corresponding to the specified position.
- a rectangular area ZN indicated by a dotted line in FIG. 1B is an example of a rectangular area corresponding to the designated position.
- the command generation unit 36 generates a control command for causing the asphalt finisher 100 to travel along the first movement route. Specifically, the command generation unit 36 of the present embodiment generates an acceleration command or deceleration command for the asphalt finisher 100 for continuing construction. Further, the command generation unit 36 generates a control command regarding steering for moving along the first movement path based on the first movement path, the acceleration command or deceleration command, and the position information of the asphalt finisher 100 received from the GPS module 50. Generate. Furthermore, the command generator 36 may generate a control command or the like for braking as necessary. The command generator 36 then outputs the generated control command to the driving system controller 55 .
- the command generation unit 36 of this embodiment generates a control command for the asphalt finisher 100 so as to synchronize the operation of the dump truck 200 and the operation of the asphalt finisher 100 .
- a control command is generated so that the vehicle travels at a constant speed along the first movement route. This facilitates synchronizing the operation of the dump truck 200 with the operation of the asphalt finisher 100 .
- the control command generated by the command generating unit 36 of the present embodiment includes, for example, a control command for steering the dump truck 200 so that the loading platform 201 is positioned at a designated position.
- Other control commands include, for example, a control command instructing the dump truck 200 to reverse or stop in order to stop the rear wheels 202 of the dump truck 200 in the vicinity of the rollers 2b.
- the command generation unit 36 steers the dump truck 200 so that the loading platform 201 is positioned at the designated position, and then generates a control command for causing the transport vehicle (eg, the dump truck 200) to travel along the second movement route. .
- the command generator 36 then outputs the generated control command to the communication controller 37 .
- the control command for traveling along the second movement route is, for example, a rightward or leftward steering command, a command to set a predetermined speed, an acceleration command, a deceleration command, a braking command, or the like.
- the command generation unit 36 controls the dump truck 200 to travel at a speed determined based on the speed of the asphalt finisher 100 after steering the dump truck 200 to position the loading platform 201 at the designated position. Generate directives. As the speed determined based on the speed of the asphalt finisher 100, for example, substantially the same speed as the speed of the asphalt finisher 100 can be considered. In other words, by running the dump truck 200 at substantially the same speed as the asphalt finisher 100, the hopper 2 of the asphalt finisher 100 and the loading platform 201 of the dump truck 200 can be maintained vertically overlapping each other. However, even when an instruction to travel at substantially the same speed is given, the command generation unit 36 may , may cause misalignment.
- the command generation unit 36 of the present embodiment generates a control command for accelerating or decelerating the dump truck 200 so that the hopper 2 of the asphalt finisher 100 and the loading platform 201 of the dump truck 200 are maintained vertically overlapping each other. do.
- the command generating unit 36 controls the relative position between the asphalt finisher 100 and the dump truck 200 in order to keep the hopper 2 of the asphalt finisher 100 and the loading platform 201 of the dump truck 200 overlapping in the vertical direction. control based on the positional relationship.
- the command generation unit 36 generates a control command to control the hoist cylinder and dump up the loading platform 201 of the dump truck 200 .
- the command generator 36 generates the control command for dumping up after positioning the loading platform 201 of the dump truck 200 at the specified position.
- the determination unit 35 may determine whether or not the loading platform 201 of the dump truck 200 has been positioned at the designated position based on the image information. Then, the command generation unit 36 generates a control command for dumping up according to the determination result. Further, the command generating unit 36 may generate a control command for dumping up when receiving a dumping up operation from the operator of the asphalt finisher 100 via the input device 60a.
- the command generation unit 36 generates a control command to control the hoist cylinder and dump down the loading platform 201 of the dump truck 200 .
- the command generating unit 36 After the supply of the pavement material loaded on the loading platform 201 to the hopper 2 is completed, the command generating unit 36 generates the control command for dumping down.
- the determining unit 35 determines whether the pavement material loaded on the loading platform 201 of the dump truck 200 is empty, in other words, whether the supply of the pavement material is completed, based on the image information. may be determined. Then, the command generation unit 36 generates a control command for the dump down according to the determination result.
- the command generating unit 36 may generate a control command for dumping down when an operation for dumping down is received from the operator of the asphalt finisher 100 via the input device 60a.
- the determination unit 35 identifies the distance between the parts of each vehicle, which is the distance between the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100. Then, the command generation unit 36 of the present embodiment issues a control command for accelerating or decelerating the dump truck 200 so that the distance between the parts of each vehicle is within the range of the distance "0" to the predetermined distance "A". Generate.
- the predetermined distance "A” is the distance between the rear wheel 202 and the roller 2b when the rear end of the loading platform 201 of the dump truck 200 and the front end of the hopper 2 overlap vertically.
- the controller 30 can control the speed or acceleration of the dump truck 200 so that the distance specified by the determination unit 35 is within the range of the distance "0" to the predetermined distance "A", the hopper 2 and the loading platform 201 can be maintained in a vertically overlapping state. A specific control method will be described later.
- the distance between each vehicle part is controlled to be within the range of distance "0" to a predetermined distance "A". It is not limited to the control method concerned. That is, the command generation unit 36 generates a control command for controlling the speed or acceleration of the dump truck 200 based on the distance between each vehicle part, so that the hopper 2 and the loading platform 201 of the dump truck 200 move vertically.
- the controller 30 may use any control method as long as the overlapping state can be maintained.
- the command generation unit 36 generates a control command regarding steering for moving along the second movement route based on the second movement route, the acceleration command or deceleration command of the dump truck 200, and the position information of the dump truck 200.
- the positional information of the dump truck 200 is calculated by the command generator 36 from the positional information of the asphalt finisher 100 acquired from the GPS module 50 and the relative positional relationship between the asphalt finisher 100 and the dump truck 200. .
- a relative positional relationship is obtained from image information captured by the imaging device 62 .
- the command generator 36 may generate a control command or the like for braking the dump truck 200 as necessary. The command generator 36 then outputs the generated control command for the dump truck 200 to the wireless communication device 40 .
- the position information of the dump truck 200 is calculated from the position information of the asphalt finisher 100 acquired from the GPS module 50 and the relative positional relationship between the asphalt finisher 100 and the dump truck 200. is configured to However, this embodiment does not limit the method of acquiring the position information of the dump truck 200 to the above method.
- dump truck 200 may be equipped with a GPS module.
- the controller 30 of the asphalt finisher 100 may acquire the position information acquired from the GPS module provided in the dump truck 200 through wireless communication between the asphalt finisher 100 and the dump truck 200 .
- control commands generated by the command generation unit 36 are not limited to the commands described above, and may be various other control commands.
- the control command generated by the command generation unit 36 is a command that can be executed by the ADAS of the asphalt finisher 100, such as turning on/off the headlights of the asphalt finisher 100 or warning the operator of the asphalt finisher 100, good.
- the control commands generated by the command generation unit 36 include commands that can be executed by the ADAS of the dump truck 200, such as turning on/off the headlights of the dump truck 200 or warning the driver of the dump truck 200. You can stay.
- the communication control unit 37 controls communication with a transportation vehicle such as the dump truck 200 via the wireless communication device 240 .
- the communication control unit 37 controls communication with the wireless communication device 240 indicated by the identification information associated with the license plate information determined by the command generation unit 36 .
- This enables the controller 30 to transmit the control command generated for the dump truck 200 to the dump truck 200 .
- the communication control unit 37 transmits to the wireless communication device 240 a control command for moving the dump truck 200 along the second movement route generated by the command generation unit 36 .
- the communication control unit 37 receives image information regarding the image captured by the first imaging device 261 of the dump truck 200 via the wireless communication device 240 .
- the communication control unit 37 receives image information regarding an image of the front of the dump truck 200 captured by the first imaging device 261 of the dump truck 200 .
- the communication control section 37 outputs the received image information to the main monitor 60 . This allows the operator of the asphalt finisher 100 to grasp the situation ahead of the dump truck 200 .
- Obstacles to be judged may be any object.
- the obstacle to be judged is a scoop or a pylon.
- the audio output device 63 outputs warning information indicating the presence of the obstacle in accordance with the instruction from the determination unit 35 . This allows the operator to recognize the presence or absence of obstacles on the movement path. Furthermore, the operator can recognize the situation of the moving route by visually recognizing the image information.
- FIG. 3 is a diagram showing a processing procedure performed by the asphalt finisher 100 according to this embodiment. S301 and S302 of the processing procedure shown in FIG. 3 are typically executed before the asphalt finisher 100 performs construction.
- the dump truck 200 may be driven by a driver, or may be automatically steered by ADAS or the like.
- the acquisition unit 32 acquires the construction plan drawing (S301).
- the route generation unit 33 generates the first movement route of the asphalt finisher 100 and the second movement route of the dump truck 200 based on the construction plan acquired by the acquisition unit 32 (S302).
- the controller 30 starts movement control of the asphalt finisher 100 according to the first movement path (S303).
- the acquisition unit 32 acquires image information indicating the image captured by the imaging device 62 (S304).
- the detection unit 34 determines whether or not the dump truck 200 exists in front of the asphalt finisher 100 (S305). When the detection unit 34 determines that the dump truck 200 does not exist (S305: No), the controller 30 executes the process of S305 again after a predetermined period of time.
- the communication control unit 37 identifies the identification information of the wireless communication device 240 from the license plate information of the dump truck 200. Then, the communication control unit 37 starts communication with the dump truck 200 equipped with the wireless communication device 240 indicated by the identified identification information (S306). Thereby, the controller 30 starts automatic control of the dump truck 200 .
- the communication control unit 37 transmits to the wireless communication device 240 of the dump truck 200 the control command generated by the command generation unit 36 for steering the dump truck 200 so as to position the loading platform 201 of the dump truck 200 at the specified position. (S307). As a result, the dump truck 200 moves to a position where the loading platform 201 of the dump truck 200 overlaps the hopper 2 of the asphalt finisher 100 in the vertical direction. After that, the dump truck 200 becomes movable together with the asphalt finisher 100 .
- the command generator 36 generates a speed control command for the dump truck 200 based on the speed of the asphalt finisher 100 (S308).
- the speed of the dump truck 200 for example, the same speed as the speed of the asphalt finisher 100 can be considered. That is, the controller 30 controls the dump truck 200 so that the speed of the dump truck 200 and the speed of the asphalt finisher 100 match, thereby causing a change in the distance between the dump truck 200 and the asphalt finisher 100. can run at the same speed.
- the communication control unit 37 transmits a speed control command to the wireless communication device 240 of the dump truck 200 (S309).
- the acquisition unit 32 acquires image information indicating the image captured by the imaging device 62 (S310).
- the acquiring unit 32 identifies relative positional information between the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100 from the image information acquired in S310.
- the acquisition unit 32 acquires position information from the GPS module 50 (S311). Thereby, the controller 30 recognizes the positional information of the asphalt finisher 100 (for example, in the world geodetic system). Furthermore, the acquisition unit 32 obtains the position information (for example, in the world geodetic system) of the asphalt finisher 100 and the relative position information between the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100, and the dump Recognize the (eg, world geodetic) location information of the truck 200 .
- the command generation unit 36 determines the overlapping state of the dump truck 200 and the asphalt finisher 100 (the state in which the loading platform 201 of the dump truck 200 overlaps the hopper 2 of the asphalt finisher 100 in the vertical direction). is generated (S312).
- the speed-related control command is, for example, a control command for accelerating, decelerating, or maintaining the speed of the dump truck 200 .
- a control command relating to speed in this embodiment will be described later.
- the command generation unit 36 generates a dump truck 200 based on the position information of the dump truck 200, the second movement path of the dump truck 200, the current speed of the dump truck 200, and a control command regarding acceleration or deceleration of the dump truck 200.
- a steering control command for moving the truck 200 along the second movement path is generated (S313).
- the communication control unit 37 transmits a steering control command and a speed control command to the wireless communication device 240 of the dump truck 200 via the wireless communication device 40 (S314).
- the command generation unit 36 generates a steering control command for the asphalt finisher 100 for moving the asphalt finisher 100 along the first movement route based on the first movement route and the position information of the asphalt finisher 100 . Then, the driving system controller 55 performs steering control according to the control command (S315).
- FIG. 4 is a top view of the construction site showing the first movement route and the second movement route generated by the route generation unit 33 for construction of the curving portion (left curve portion) of the road.
- the asphalt finisher 100 paves the area between the left boundary line LP and the right boundary line RP with asphalt mixture. Therefore, the asphalt finisher 100 widens the screed device 3 until it reaches the left boundary line LP and the right boundary line RP.
- the path generation unit 33 generates the first movement path AFL so that the asphalt finisher 100 can lay asphalt mixture in the area between the left boundary line LP and the right boundary line RP. That is, the first movement path AFL indicates a movement path for the asphalt finisher 100 to pave the construction target area with the asphalt mixture according to the construction plan.
- the route generation unit 33 generates the second movement route DTL based on the first movement route AFL of the asphalt finisher 100 .
- the second travel route DTL is the travel route of the dump truck 200 .
- the loading platform 201 of the dump truck 200 and the hopper 2 of the asphalt finisher 100 move vertically while the asphalt finisher 100 moves along the first movement path AFL.
- the overlapping state is maintained. Therefore, the dump truck 200 can stably supply the pavement material from the dump truck 200 to the asphalt finisher 100 .
- a portion of dump truck 200 overlaps asphalt finisher 100, so the distance between dump truck 200 and asphalt finisher 100 disappears.
- the second movement path DTL is a movement path used for control after the loading platform 201 of the dump truck 200 is positioned at the specified position.
- the controller 30 controls the dump truck 200 to position the loading platform 201 of the dump truck 200 at the designated position, and then automatically controls the dump truck 200 according to the second movement path DTL.
- the controller 30 ends the control of the dump truck 200 following the second movement path DTL.
- the dump truck 200 travels according to control on the side of the dump truck 200 (for example, operation control by the driver or control of driving support by ADAS on the side of the dump truck 200).
- the controller 30 of the present embodiment controls the dump truck 200 along the second movement path DTL only while the loading platform 201 of the dump truck 200 is positioned at the specified position. Thereby, the controller 30 can control the plurality of dump trucks 200 according to the second movement route DTL.
- the first movement path AFL and the second movement path DTL are expressed using a reference coordinate system.
- the reference coordinate system is, for example, the world geodetic system. Note that the reference coordinate system is not limited to the world geodetic system. coordinate system.
- a point AP1 indicates the position of the front end of the asphalt finisher 100 at the first point of time when construction is started.
- a point AP2 indicates the position of the front end of the asphalt finisher 100 at a second point in time following the first movement path AFL for a predetermined period of time from the first point in time.
- a point AP3 indicates the position of the front end of the asphalt finisher 100 at a third point in time following the first movement path AFL from the second point in time.
- the command generator 36 determines that the actual position coordinates indicated by the position of the front end of the asphalt finisher 100 (for example, point AP1, point AP2, or point AP3) match one of the position coordinates forming the first movement path AFL. , a control command for operating the asphalt finisher 100 is generated.
- the command generation unit 36 calculates position information indicating the position of the front end of the asphalt finisher 100 (for example, points AP1, AP2, and AP3). Then, if the calculated position information requires rightward or leftward steering to follow the first movement path AFL, the command generation unit 36 generates a control command for rightward or leftward steering. In addition, the command generator 36 calculates the steering angle for following the first movement path AFL according to the current speed, acceleration, or deceleration of the asphalt finisher 100 . The calculated steering angle is included in the control command.
- a point DP1 indicates the position of the front end of the dump truck 200 at the first point in time when construction is started.
- a point DP2 indicates the position of the front end of the dump truck 200 at a second point in time following the second movement path DTL from the first point in time.
- a point DP3 indicates the position of the front end of the dump truck 200 at a third point in time following the second travel path DTL from the second point in time.
- the command generator 36 determines that the actual position coordinates indicated by the position of the front end of the dump truck 200 (for example, the point DP1, the point DP2, or the point DP3) matches one of the position coordinates forming the second movement path DTL. , a control command for operating the dump truck 200 is generated. Further, the command generator 36 generates a control command to keep the hopper 2 of the asphalt finisher 100 and the loading platform 201 of the dump truck 200 vertically overlapping each other.
- the command generator 36 generates a control command regarding the speed of the dump truck 200 based on the speed, acceleration, or deceleration of the asphalt finisher 100 . Furthermore, based on the position information from the GPS module 50, the command generator 36 calculates position information indicating the positions of the front end of the dump truck 200 (for example, points DP1, DP2, and DP3). Then, if the calculated position information requires rightward or leftward steering to follow the second movement route, the command generation unit 36 generates a control command for rightward or leftward steering. In addition, the command generator 36 calculates the steering angle for following the second movement path according to the current speed of the dump truck 200 and the acceleration or deceleration indicated by the speed-related control command. The calculated steering angle is included in the control command. Then, the communication control unit 37 transmits a control command for the dump truck 200 to the wireless communication device 240 of the dump truck 200 via the wireless communication device 40 .
- the controller 30 determines whether or not the supply of pavement material from the dump truck 200 has ended (S316). Any method may be used to determine whether or not the supply of the pavement material has ended. For example, notification from the dump truck 200 may be used. When it is determined that the supply of the pavement material has not ended (S316: No), the controller 30 executes the processes after S310.
- the communication control unit 37 issues the control command generated by the command generation unit 36 to move the dump truck 200 away from the asphalt finisher 100. It is transmitted to the wireless communication device 240 of the dump truck 200 (S316).
- the controller 30 determines whether or not the construction along the first movement route has been completed (S317). When it is determined that the construction is not completed (S317: No), the controller 30 executes the processes after S305 again.
- the asphalt finisher 100 of this embodiment can pave the construction target area with asphalt mixture by performing the above-described processing.
- the controller 30 of the above-described embodiment generates the second travel route for the transport vehicle such as the dump truck 200 so that the overlapping state can be maintained when the asphalt finisher 100 travels along the first travel route. Thereby, the controller 30 can synchronize the steering of the asphalt finisher 100 and the steering of the dump truck 200 .
- the determination unit 35 of the controller 30 determines whether the hopper 2 and the loading platform 201 are aligned based on the positional relationship between the rear wheels of the dump truck 20 and the rollers 2b of the asphalt finisher 100 (the positional relationship between the parts of the respective vehicles). It can be determined whether or not the overlap state is maintained.
- the rear wheel of the dump truck 20 and the roller 2b of the asphalt finisher 100 do not necessarily have to be used to determine whether or not the overlap state is maintained. For example, based on the positional relationship between the front end of the hopper 2 and the rear end of the loading platform 201, it may be determined whether or not the hopper 2 maintains an overlapping state with the loading platform 201. In other words, the controller 30 according to this embodiment may perform control so as to maintain the overlapping state based on the positional relationship between the front end of the hopper 2 and the rear end of the loading platform 201 .
- the determination unit 35 identifies the distance between each vehicle part between the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100 from the image information acquired by the acquisition unit 32. . Then, the command generation unit 36 of the present embodiment issues a control command for accelerating or decelerating the dump truck 200 so that the distance between the parts of each vehicle is within the range of the distance "0" to the predetermined distance "A". Generate. In this way, the speed of the dump truck 200 is controlled so that the distance between the parts forming the dump truck 200 and the parts forming the asphalt finisher 100 is within a predetermined range.
- FIG. 5 is a conceptual diagram showing the positional relationship between the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100 according to this embodiment.
- FIG. 5A is a diagram showing a case where the distance between the respective vehicle parts between the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100 is "0".
- FIG. 5B is a diagram showing a case where the distance between the respective vehicle parts between the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100 is a predetermined distance "A".
- the rear end portion of the loading platform 201 of the dump truck 200 and the front end portion of the hopper 2 of the asphalt finisher 100 overlap vertically.
- the hopper 2 and the loading platform 201 of the dump truck 200 are separated. do not overlap vertically.
- the pavement material may drop onto the road surface or the like without being supplied from the loading platform 201 to the hopper 2 .
- the command generating unit 36 of the controller 30 of the present embodiment is configured to control the distance between the rear wheel 202 of the dump truck 200 (an example of a part of the dump truck 200) and the roller 2b of the asphalt finisher 100 (an example of a part of the asphalt finisher 100).
- a speed-related control command is generated so that the distance between parts of the vehicle falls within a predetermined range ("0" ⁇ distance between each vehicle part ⁇ "A").
- the control is switched depending on whether the distance between the parts of each vehicle is shorter than the reference distance.
- the reference distance according to the present embodiment is an intermediate distance between the distance "0", which is the distance between each vehicle part in FIG. 5A, and the predetermined distance "A", which is the distance between each vehicle part in FIG. 5B.
- This embodiment will explain an example in which the distance between the rear wheel 202, which is a component of the dump truck 200, and the roller 20b, which is a component of the asphalt finisher 100, is used as a criterion. However, this embodiment does not limit the parts used for the distance criterion to the rear wheel 202 and the roller 20b, and other parts may be used.
- FIG. 5C is a diagram showing a case where the distance between each vehicle part between the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100 is the reference distance "A/2". Then, the controller 30 switches the speed control (for example, acceleration or deceleration) of the dump truck 200 depending on whether the distance between the parts of each vehicle is shorter than the reference distance "A/2". Acceleration and deceleration of the dump truck 200 are set in advance. Also, the acceleration and deceleration of the dump truck 200 may be changed according to the distance between the parts of each vehicle. Next, specific processing of S311 in FIG. 3 in the controller 30 according to this embodiment will be described.
- the controller 30 switches the speed control (for example, acceleration or deceleration) of the dump truck 200 depending on whether the distance between the parts of each vehicle is shorter than the reference distance "A/2". Acceleration and deceleration of the dump truck 200 are set in advance. Also, the acceleration and deceleration of the dump truck 200 may be changed according to the distance between the parts
- the determination unit 35 determines whether the rear wheel 202 of the dump truck 200 and the roller 2b of the asphalt finisher 100 are aligned. It is determined whether the distance between each vehicle part between is shorter than the reference distance "A/2".
- the command generation unit 36 When the determination unit 35 determines that the distance between the parts of each vehicle is shorter than the reference distance "A/2", the command generation unit 36 generates a control command to accelerate the dump truck 200.
- the acceleration represented by the control command increases, for example, as the distance between the vehicle parts becomes shorter than the reference distance "A/2".
- the command generation unit 36 determines that the distance between the parts of each vehicle is the reference distance "A/2". 2" or longer.
- the command generation unit 36 generates a control command for decelerating the dump truck 200 .
- the deceleration represented by the control command increases, for example, as the distance between the parts of each vehicle becomes longer than the reference distance "A/2".
- the determination unit 35 determines that the distance between the parts of each vehicle is not longer than the reference distance "A/2", in other words, the distance between the parts of each vehicle and the reference distance "A/2" are equal.
- the command generation unit 36 generates a control command to keep the dump truck 200 at the current speed. In this manner, the controller 30 controls the speed of the dump truck 200 relative to the asphalt finisher 100 to increase or decrease.
- the command generation unit 36 of the present embodiment generates the control command for acceleration, the control command for deceleration, or the control command for maintaining the speed as a control command related to speed. After the command generation unit 36 generates these control commands, the processing from S312 onwards is performed.
- the controller 30 of this embodiment generates a control command regarding the speed of the dump truck 200 according to the positional relationship between the dump truck 200 and the asphalt finisher 100. Thereby, the controller 30 can synchronize the speed of the asphalt finisher 100 and the speed of the dump truck 200 .
- the controller 30 of the second embodiment calculates the difference between the speed of the control command transmitted in S309 and the actual speed of the dump truck 200, and adjusts the speed of the dump truck 200 based on the calculated deviation. Control.
- the dump truck 200 travels at the speed indicated by the control command transmitted in S309, the hopper 2 of the asphalt finisher 100 and the loading platform 201 of the dump truck 200 can be kept vertically overlapping.
- the controller 30 performs feedback control of the speed of the dump truck 200 .
- the acquisition unit 32 acquires information on the actual speed of the dump truck 200 .
- the acquisition unit 32 may acquire information on the actual speed received from the dump truck 200 via the communication control unit 37 .
- the acquisition unit 32 may estimate the actual speed of the dump truck 200 based on the image of the dump truck 200 included in the image information captured by the imaging device 62 .
- the determination unit 35 calculates the difference between the speed indicated by the control command transmitted to the dump truck 200 in S309 and the actual speed of the dump truck 200.
- the command generation unit 36 Based on the difference between the speed indicated by the control command and the actual speed of the dump truck 200, the command generation unit 36 performs feedback control for causing the dump truck 200 to travel at the speed indicated by the speed control command. Generate control commands.
- a well-known method such as PID control may be used, for example.
- the command generator 36 uses the control command based on the feedback control as a control command related to speed.
- the communication controller 37 transmits the control command to the dump truck 200 via the wireless communication device 40 .
- the controller 30 executes the processes after S312 in FIG. That is, upon receiving the control command, the controller 230 of the dump truck 200 performs feedback control to reduce the difference between the speed indicated by the control command transmitted in S309 and the actual speed of the dump truck 200. conduct. This allows the controller 230 to bring the actual speed of the dump truck 200 closer to the speed represented by the speed control command.
- command generation unit 36 of the second embodiment generates a control command for accelerating, decelerating, or maintaining the speed of the dump truck 200 based on the distance between each vehicle part, as in the first embodiment. may be generated.
- the command generator 36 of the second embodiment determines that the distance between the vehicle parts between the roller 2b of the asphalt finisher and the rear wheel 202 of the dump truck 200 is greater than the reference distance "A/2".
- a speed control command may be generated depending on whether it is short or not.
- the command generation unit 36 controls the vehicle to travel at a speed higher than the current speed of the asphalt finisher. Generate directives.
- the command generation unit 36 increases the speed of the asphalt finisher from the current speed. Generate a control command to run at a slow speed.
- the command generation unit 36 can perform A control command that suppresses the influence may be generated.
- the communication control unit 37 of the asphalt finisher 100 receives image information captured by the first imaging device 261 of the dump truck 200 via the wireless communication device 40, and the command generation unit 36 is represented by the image information.
- the control command for speed may be corrected based on the current situation.
- the command generation unit 36 provides a feed for increasing the acceleration in advance in response to the control command to be generated. Perform forward control.
- the command generator 36 of the second embodiment may generate a control command based on a combination of the feedforward control and the feedback control described above.
- the controller 30 synchronizes the speed of the dump truck 200 and the speed of the asphalt finisher 100 by performing the control described above. Thereby, the controller 30 of the second embodiment maintains a constant distance between the respective vehicle parts between the dump truck 200 and the asphalt finisher 100 , and the loading platform 201 of the dump truck 200 is in the hopper of the asphalt finisher 100 . 2 to maintain the state of being vertically overlapped.
- the controller 30 of the second embodiment generates a control command based on feedback control regarding the speed of the dump truck 200 according to the difference between the speed indicated by the control command of the dump truck 200 and the actual speed. there is As a result, the controller 30 can synchronize the speed of the asphalt finisher 100 and the speed of the dump truck 200 as in the first embodiment.
- the controller 30 of the embodiment described above synchronizes the operation of the transportation vehicle such as the dump truck 200 and the operation of the asphalt finisher 100 through the control described above.
- the operation to be synchronized is not limited to steering and speed, and may be turning on/off the headlights or winkers, outputting warning information, or the like.
- the controller 30 controlled the dump truck 200 .
- this embodiment is not limited to the case where the transport vehicle to be controlled exists in front of the asphalt finisher 100 .
- the controller 30 may control transport vehicles existing around the asphalt finisher 100 .
- the asphalt finisher 100 further includes an imaging device capable of imaging in the horizontal direction
- the controller 30 may control the dump truck detected by the imaging device.
- the controller 30 of the asphalt finisher 100 transmits a control command to the detected dump truck so that it moves forward and then moves backward.
- the detecting device such as the imaging device may be set to the detection range as long as it is around the asphalt finisher 100 .
- the controller 30 may then control the transport vehicle detected within the detection range.
- the imaging device 62 detects a transportation vehicle such as the dump truck 200 has been described.
- the detection device may be a sensor or the like that can detect the position of the dump truck 200 .
- the detection device may be a distance sensor such as LIDAR (Light Detection and Ranging, Laser Imaging Detection and Ranging) or millimeter wave radar.
- the steering information for steering the dump truck 200, which the asphalt finisher 100 transmits to the dump truck 200 is not limited to a steering control command, and may be any information necessary to steer the dump truck 200. good. For example, if the dump truck 200 can steer according to the second movement route when receiving the second movement route, the asphalt finisher 100 may transmit the second movement route as the steering information.
- the asphalt finisher 100 synchronizes the operation of the asphalt finisher 100 and the operation of the dump truck 200 with the above-described configuration, thereby reducing the burden of manual steering by the driver of the dump truck 200. can.
- the asphalt finisher 100 synchronizes the steering of the asphalt finisher 100 and the steering of the dump truck 200, so that the positional relationship between the loading platform 201 of the dump truck 200 and the hopper 2 of the asphalt finisher 100 is shifted. can be suppressed, the supply of pavement material from the dump truck 200 to the asphalt finisher 100 can be stabilized. As a result, the asphalt finisher 100 can suppress deterioration in the quality of the paved surface of asphalt after construction.
- the asphalt finisher 100 generates the first movement path for the asphalt finisher 100 and the second movement path for the dump truck 200
- the above-described embodiment is not limited to the asphalt finisher 100 generating the first movement path for the asphalt finisher 100 and the second movement path for the dump truck 200 . Therefore, in the modified example, the movement route is generated by an information processing device provided outside.
- the information processing device controls the operation of the dump truck 200 and the operation of the asphalt finisher 100.
- a first movement path for the asphalt finisher 100 and a second movement path for the dump truck 200 are generated in order to synchronize the .
- the information processing device provided outside generates a first movement route for the asphalt finisher 100 and a second movement route for the dump truck 200 after inputting and processing the construction plan drawing.
- the information processing device then transmits the first movement route for the asphalt finisher 100 and the second movement route for the dump truck 200 to the wireless communication device 40 of the asphalt finisher 100 .
- Subsequent processing is the same as in the above-described embodiment, and description thereof is omitted.
- any device included in the asphalt finisher construction support system may perform control for synchronizing the operation of the dump truck 200 and the operation of the asphalt finisher 100 .
- the transport vehicle and the asphalt finisher are automatically controlled so as to follow the construction target area at the road paving site, so the safety of road paving is improved. Furthermore, in the above-described embodiment and modification, the operator of the asphalt finisher can confirm the surrounding situation based on the image information taken in front of the transportation vehicle, so the safety of the operator and surrounding workers can be improved. improves.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
Description
図1は、第1の実施形態に係る道路機械の一例であるアスファルトフィニッシャ100及びダンプトラック200を示した図である。具体的には、図1Aは左側面図であり、図1Bは上面図である。図1は、ダンプトラック200が、後退しながらアスファルトフィニッシャ100に接近する例を示す。
第1の実施形態では、ダンプトラック200の速度に関する制御指令を生成する手法として、ダンプトラック200の後輪202とアスファルトフィニッシャ100のローラ2bとの間のそれぞれの車両の部品間の距離に応じて速度に関する制御を切り替える手法が採用された。しかしながら、上述した実施形態は、アスファルトフィニッシャ100のコントローラ30によるダンプトラック200の速度に関する制御指令の生成を、それぞれの車両の部品間の距離に応じて切り替える手法に限定するものではない。そこで、以下では、第1の実施形態と異なる手法で速度に関する制御指令を生成する第2の実施形態について説明する。なお、第2の実施形態のアスファルトフィニッシャ100及びダンプトラック200は、第1の実施形態と同様の構成として説明を省略する。
上述した実施形態においては、アスファルトフィニッシャ100において、アスファルトフィニッシャ100用の第1移動経路と、ダンプトラック200用の第2移動経路と、を生成する例について説明した。しかしながら、上述した実施形態は、アスファルトフィニッシャ100用の第1移動経路と、ダンプトラック200用の第2移動経路と、の生成を、アスファルトフィニッシャ100で行う場合に限定するものではない。そこで、変形例では、外部に設けられた情報処理装置で移動経路が生成される。つまり、本変形例は、アスファルトフィニッシャ100と、ダンプトラック200と、情報処理装置と、を備えたアスファルトフィニッシャの施工支援システムにおいて、情報処理装置が、ダンプトラック200の動作とアスファルトフィニッシャ100の動作とを同期させるために、アスファルトフィニッシャ100用の第1移動経路と、ダンプトラック200用の第2移動経路と、の生成をする例とする。
Claims (10)
- トラクタと、
前記トラクタの前側に設置されたホッパと、
前記ホッパ内の舗装材を前記トラクタの後側へ搬送するコンベアと、
前記コンベアによって搬送されて路面上に撒かれた舗装材を車幅方向に敷き拡げるスクリュと、
前記スクリュによって敷き拡げられた舗装材を前記スクリュの後側で敷き均すスクリード装置と、を備え、
運搬車両の動作を、当該アスファルトフィニッシャの動作に対応するよう同期させる、
アスファルトフィニッシャ。 - 前記運搬車両の動作と当該アスファルトフィニッシャの動作とを同期させるよう、当該アスファルトフィニッシャに対する制御指令を生成する、
請求項1に記載のアスファルトフィニッシャ。 - 前記運搬車両を構成する部品と当該アスファルトフィニッシャを構成する部品との間の距離を取得し、
取得する前記距離に基づいて、前記運搬車両の加速又は減速を指示する制御指令を生成する、
請求項1に記載のアスファルトフィニッシャ。 - 前記取得する前記距離に基づいて、前記運搬車両の荷台と前記ホッパとが鉛直方向において重なっている状態を維持する範囲内になるように、前記制御指令を生成する、
請求項3に記載のアスファルトフィニッシャ。 - 当該アスファルトフィニッシャの速度に基づいて、前記運搬車両の速度を示した速度の制御指令を生成する、
請求項1に記載のアスファルトフィニッシャ。 - 前記速度の制御指令を送信した後、前記運搬車両の実際の速度を取得し、
前記運搬車両の前記実際の速度と、前記速度の制御指令で示された速度と、の差に基づいて、前記速度の制御指令で示された速度で前記運搬車両が走行するようにフィードバック制御させる制御指令を生成する、
請求項5に記載のアスファルトフィニッシャ。 - トラクタと、前記トラクタの前側に設置されたホッパと、前記ホッパ内の舗装材を前記トラクタの後側へ搬送するコンベアと、前記コンベアによって搬送されて路面上に撒かれた舗装材を車幅方向に敷き拡げるスクリュと、前記スクリュによって敷き拡げられた舗装材を前記スクリュの後側で敷き均すスクリード装置と、を備えるアスファルトフィニッシャに用いられるアスファルトフィニッシャの施工支援システムであって、
前記アスファルトフィニッシャの前方の運搬車両の動作を、当該アスファルトフィニッシャの動作に対応するよう同期させるように構成されている制御装置と、を有する
アスファルトフィニッシャの施工支援システム。 - 前記制御装置は、前記運搬車両の動作と当該アスファルトフィニッシャの動作とを同期させるよう、当該アスファルトフィニッシャに対する制御指令を生成するように構成されている、
請求項7に記載のアスファルトフィニッシャの施工支援システム。 - 前記制御装置は、前記運搬車両を構成する部品と当該アスファルトフィニッシャを構成する部品との間の距離を取得し、取得する前記距離に基づいて、前記運搬車両の加速又は減速を指示する制御指令を生成するように構成されている、
請求項7に記載のアスファルトフィニッシャの施工支援システム。 - 前記制御装置は、当該アスファルトフィニッシャの速度に基づいて、前記運搬車両の速度を示した速度の制御指令を生成するように構成されている、
請求項7に記載のアスファルトフィニッシャの施工支援システム。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280021124.0A CN117062954A (zh) | 2021-03-29 | 2022-03-28 | 沥青滚平机及沥青滚平机的施工支援系统 |
JP2023511310A JPWO2022210612A1 (ja) | 2021-03-29 | 2022-03-28 | |
EP22780823.5A EP4317583A4 (en) | 2021-03-29 | 2022-03-28 | ASPHALT FINISHER AND CONSTRUCTION AID SYSTEM FOR ASPHALT FINISHER |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-056023 | 2021-03-29 | ||
JP2021056023 | 2021-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022210612A1 true WO2022210612A1 (ja) | 2022-10-06 |
Family
ID=83459244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/015206 WO2022210612A1 (ja) | 2021-03-29 | 2022-03-28 | アスファルトフィニッシャ、及びアスファルトフィニッシャの施工支援システム |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4317583A4 (ja) |
JP (1) | JPWO2022210612A1 (ja) |
CN (1) | CN117062954A (ja) |
WO (1) | WO2022210612A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6457110U (ja) * | 1987-10-06 | 1989-04-10 | ||
JPH0731908U (ja) * | 1993-04-09 | 1995-06-16 | 建設省東北地方建設局長 | 舗装工事車両におけるダンプカーの誘導装置 |
WO2017010541A1 (ja) | 2015-07-15 | 2017-01-19 | 住友建機株式会社 | 道路機械 |
JP2018190228A (ja) * | 2017-05-09 | 2018-11-29 | 鹿島道路株式会社 | 車両誘導システム |
JP2021056023A (ja) | 2019-09-27 | 2021-04-08 | 大同メタル工業株式会社 | 摺動部材の損傷を監視するための自己検知材料を含む内燃機関の摺動部材 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015009699A1 (de) * | 2014-08-15 | 2016-02-18 | Dynapac Gmbh | Straßenfertiger, Beschicker und Verfahren zur Herstellung eines Straßenbelags sowie Verfahren zum Betrieb eines Beschickers |
-
2022
- 2022-03-28 EP EP22780823.5A patent/EP4317583A4/en active Pending
- 2022-03-28 JP JP2023511310A patent/JPWO2022210612A1/ja active Pending
- 2022-03-28 CN CN202280021124.0A patent/CN117062954A/zh active Pending
- 2022-03-28 WO PCT/JP2022/015206 patent/WO2022210612A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6457110U (ja) * | 1987-10-06 | 1989-04-10 | ||
JPH0731908U (ja) * | 1993-04-09 | 1995-06-16 | 建設省東北地方建設局長 | 舗装工事車両におけるダンプカーの誘導装置 |
WO2017010541A1 (ja) | 2015-07-15 | 2017-01-19 | 住友建機株式会社 | 道路機械 |
JP2018190228A (ja) * | 2017-05-09 | 2018-11-29 | 鹿島道路株式会社 | 車両誘導システム |
JP2021056023A (ja) | 2019-09-27 | 2021-04-08 | 大同メタル工業株式会社 | 摺動部材の損傷を監視するための自己検知材料を含む内燃機関の摺動部材 |
Non-Patent Citations (1)
Title |
---|
See also references of EP4317583A4 |
Also Published As
Publication number | Publication date |
---|---|
EP4317583A1 (en) | 2024-02-07 |
CN117062954A (zh) | 2023-11-14 |
EP4317583A4 (en) | 2024-09-18 |
JPWO2022210612A1 (ja) | 2022-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA3007470C (en) | Work machine management system, work machine control system, and work machine | |
AU2016400807B2 (en) | Work machine management system and work machine management method | |
WO2017209181A1 (ja) | 作業機械の管理装置、作業機械、及び作業機械の管理システム | |
EP3832019B1 (en) | Asphalt finisher and asphalt finisher monitoring system | |
CN110869560B (zh) | 沥青滚平机 | |
WO2022210612A1 (ja) | アスファルトフィニッシャ、及びアスファルトフィニッシャの施工支援システム | |
AU2016400806B2 (en) | Work machine management system | |
WO2022210622A1 (ja) | アスファルトフィニッシャ、及びアスファルトフィニッシャの施工支援システム | |
EP4317586A1 (en) | Asphalt finisher, transport vehicle, and system for assisting construction of asphalt finisher | |
WO2022004131A1 (ja) | 無人車両の制御システム、無人車両、及び無人車両の制御方法 | |
WO2023042836A1 (ja) | 無人車両、無人車両の制御システム、及び無人車両の制御方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22780823 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023511310 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280021124.0 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022780823 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022780823 Country of ref document: EP Effective date: 20231030 |