WO2023042691A1 - 自動搬送装置の荷崩れ検知装置および自動搬送装置の荷崩れ検知方法 - Google Patents
自動搬送装置の荷崩れ検知装置および自動搬送装置の荷崩れ検知方法 Download PDFInfo
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- WO2023042691A1 WO2023042691A1 PCT/JP2022/033158 JP2022033158W WO2023042691A1 WO 2023042691 A1 WO2023042691 A1 WO 2023042691A1 JP 2022033158 W JP2022033158 W JP 2022033158W WO 2023042691 A1 WO2023042691 A1 WO 2023042691A1
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- 238000001514 detection method Methods 0.000 title claims abstract description 330
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000032258 transport Effects 0.000 description 129
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 18
- 230000007246 mechanism Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/20—Control system inputs
- G05D1/24—Arrangements for determining position or orientation
- G05D1/242—Means based on the reflection of waves generated by the vehicle
- G05D1/2424—Means based on the reflection of waves generated by the vehicle for monitoring a plurality of zones
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/60—Intended control result
- G05D1/617—Safety or protection, e.g. defining protection zones around obstacles or avoiding hazards
- G05D1/618—Safety or protection, e.g. defining protection zones around obstacles or avoiding hazards for cargo or occupants
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D2105/00—Specific applications of the controlled vehicles
- G05D2105/20—Specific applications of the controlled vehicles for transportation
- G05D2105/28—Specific applications of the controlled vehicles for transportation of freight
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D2107/00—Specific environments of the controlled vehicles
- G05D2107/70—Industrial sites, e.g. warehouses or factories
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D2109/00—Types of controlled vehicles
- G05D2109/10—Land vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/60—Electric or hybrid propulsion means for production processes
Definitions
- the present disclosure relates to a load collapse detection device for an automatic transport device and a load collapse detection method for an automatic transport device.
- AGVs automated guided vehicles
- One aspect of the present disclosure is a load collapse detection device for an automatic transport device and a load collapse detection method for an automatic transport device that can accurately detect collapse of cargo loaded on the automatic transport device with simple processing. .
- a load collapse detection device for an automatic transport device is a load collapse detection device communicably connected to an object detection sensor that detects an object around the automatic transport device, wherein the object detection sensor detects A detection range storing information indicating a detection range of collapse of cargo adjacent to the automatic transport device within the detection range, and information indicating an obstacle detection range around the detection range of collapse of cargo within the detection range of the object detection sensor.
- an information storage unit; and an object detection processing unit that acquires detection results from the object detection sensor while the automatic transport device is running, and detects an object within the cargo collapse detection range and an object within the obstacle detection range.
- a cargo collapse determination unit that determines that the object has fallen due to collapse of cargo if the object is not detected within the obstacle detection range before being detected within the collapse detection range.
- the load collapse detection device communicably connected to an object detection sensor that detects an object around the automatic transport device detects an object detected by the object detection sensor.
- Information indicating a load collapse detection range adjacent to the automatic transport device within the detection range and information indicating an obstacle detection range around the load collapse detection range within the detection range of the object detection sensor are stored, A detection result by the object detection sensor is acquired while the automatic transport device is running, and the object detection sensor monitors whether or not an object is detected within the load collapse detection range and the obstacle detection range, and the load collapse is detected.
- the load collapse detection device for an automatic transport device when an object within the load collapse detection range adjacent to the automatic transport device is detected while the automatic transport device is running, , If the object is not detected within the obstacle detection range surrounding the load collapse detection range before being detected in the load collapse detection range, it is determined that the object has fallen due to the collapse of cargo. Therefore, it is possible to accurately detect the collapse of the cargo loaded on the automatic transport device.
- the load collapse detection device for an automatic transport device and the load collapse detection method for an automatic transport device it is possible to accurately detect the collapse of cargo loaded on an automatic transport device.
- FIG. 1 is an external perspective view of automatic transport devices 1A and 1B of the first and second embodiments.
- FIG. 2 is a block diagram showing the configuration of the automatic transport device 1A of the first embodiment.
- FIG. 3 is a top view of the object detection range C1 of the object detection sensor 10-1 and the object detection range C2 of the object detection sensor 10-2 of the automatic transport apparatus 1A according to the first embodiment.
- FIG. 4 is a top view of the load collapse detection range E and the obstacle detection ranges F1 and F2 in which the detection range information storage unit 40 of the automatic transport device 1A according to the first embodiment stores information.
- FIG. 5 is a flow chart showing the operation of the automatic transport device 1A of the first embodiment.
- FIG. 5 is a flow chart showing the operation of the automatic transport device 1A of the first embodiment.
- FIG. 6A is a top view of the state when the object X is detected within the obstacle detection range F1 while the automatic transport device 1A of the first embodiment is running.
- FIG. 6B is a top view of the state when the object Y is detected within the cargo collapse detection range E while the automatic transport device 1A of the first embodiment is running.
- FIG. 7 is a block diagram showing the configuration of the automatic transport device 1B of the second embodiment.
- FIG. 8 is a flow chart showing the operation of the automatic transport device 1B of the second embodiment.
- FIG. 9A is a top view of a state in which the load collapse detection range is updated when the automatic transport device 1B of the second embodiment accelerates forward.
- FIG. 9A is a top view of a state in which the load collapse detection range is updated when the automatic transport device 1B of the second embodiment accelerates forward.
- FIG. 9B is a top view of a state in which the cargo collapse detection range is updated when the automatic transport device 1B of the second embodiment decelerates during travel.
- FIG. 10A is a top view of a state in which the load collapse detection range is updated when the automatic transport device 1B of the second embodiment turns to the left.
- FIG. 10B is a top view of a state in which the cargo collapse detection range is updated when the automatic transport device 1B of the second embodiment turns rightward.
- FIG. 11A is a top view of a state in which the load collapse detection range is updated while the automatic transport device 1B of the second embodiment is traveling with a long load loaded.
- FIG. 10A is a top view of a state in which the load collapse detection range is updated when the automatic transport device 1B of the second embodiment is traveling with a long load loaded.
- FIG. 11B is a top view of a state in which the load collapse detection range is updated while the automatic transport device 1B of the second embodiment is running with a small load loaded.
- FIG. 12 shows a state in which the load collapse detection range is updated while the automatic carrier 1B is running with the center of gravity of the load loaded on the automatic carrier 1B biased forward in the second embodiment.
- FIG. 13A is an explanatory view showing a dome-shaped object detection range by the object detection sensor 10-3 installed at one end of the upper portion of the automatic transport devices 1A and 1B.
- FIG. 13B is an explanatory diagram showing a planar object detection range by the object detection sensor 10-4 installed at one end of the upper portion of the automatic transport devices 1A and 1B.
- FIG. 13C is an explanatory view showing fan-shaped object detection ranges by the object detection sensors 10-5 installed on each of the four sides of the automatic transport devices 1A and 1B.
- FIG. 1 is an external perspective view of an automatic transport device 1A according to the first embodiment
- FIG. 2 is a block diagram showing the configuration of the automatic transport device 1A.
- the automatic transport device 1A loads and transports loads such as parts and products to be processed within a sheet metal processing facility in which a plurality of sheet metal processing devices (not shown) are installed.
- the automatic transport device 1A includes object detection sensors 10-1 and 10-2, a traveling mechanism 20, a CPU (Central Processing Unit) 30A, a detection range information storage unit 40, and an output unit 50.
- the object detection sensors 10-1 and 10-2 are sensors for detecting objects around the automatic transport device 1A. Ranging sensor can be used.
- the object detection sensor 10-1 is installed in front of the automatic transport device 1A in the running direction to detect an object in the area in front of the automatic transport device 1A, and the object detection sensor 10-2 is installed behind the automatic transport device 1A in the running direction. Then, an object in the area behind the automatic transport device 1A is detected.
- the object detection sensors 10-1 and 10-2 respectively detect two-dimensional or three-dimensional relative positions of objects with respect to the automatic transport device 1A.
- the traveling mechanism 20 is a mechanism for causing the automatic carrier 1A to travel, and includes, for example, three or more wheels that support the automatic carrier 1A and can rotate on the road surface, and a drive source such as a motor that drives the wheels to rotate. , a power train that transmits the driving force of the drive source to the wheels, and a steering mechanism that controls the traveling direction of the automatic transport apparatus 1A.
- the output unit 50 issues an alarm, transmits information to another automatic carrier device (not shown) or a management device (not shown) that manages the devices in the sheet metal processing facility and the automatic carrier device, and the like.
- a communication device for example, a device capable of wireless communication by IEEE 802.11 standard wireless LAN (Local Area Network) or mobile communication.
- the CPU 30A has a travel control unit 31, an object detection processing unit 32A, a cargo collapse determination unit 33, and an output control unit 34.
- the travel control unit 31 controls the travel mechanism 20 .
- the output control unit 34 controls output of information to the output unit 50 .
- the object detection processing section 32A, the cargo collapse determination section 33, and the detection range information storage section 40 constitute a cargo collapse detection device 60A.
- Each component (31, 32A, 33, 34) of the CPU 30A can be realized using a general-purpose microcomputer. Specifically, a dedicated computer program is installed in the microcomputer and executed. Thereby, the general-purpose microcomputer functions as a plurality of information processing units (31, 32A, 33, 34).
- Dedicated hardware includes devices such as Application Specific Integrated Circuits (ASICs) and conventional circuitry arranged to perform the functions described in the embodiments.
- ASICs Application Specific Integrated Circuits
- the load collapse detection device 60A is communicably connected to the object detection sensors 10-1 and 10-2, and detects a load collapse detection range adjacent to the automatic transport device 1A within the detection range of the object detection sensors 10-1 and 10-2. and information indicating an obstacle detection range around the cargo collapse detection range among the detection ranges of the object detection sensors 10-1 and 10-2; and an automatic transport device 1A.
- An object detection processing unit 32A that acquires detection results from the object detection sensors 10-1 and 10-2 while traveling, and detects objects within the load collapse detection range and objects within the obstacle detection range, and an object detection When an object within the cargo collapse detection range is detected by the processing unit 32A, it is determined whether or not the object was detected within the cargo collapse detection range before it was detected within the cargo collapse detection range.
- the detection range information storage unit 40 is, for example, a memory included in a general-purpose microcomputer, or an auxiliary storage device (including a magnetic disk drive and an optical disk drive) connected to the microcomputer.
- FIG. 3 is a top view of the object detection range C1 of the object detection sensor 10-1 and the object detection range C2 of the object detection sensor 10-2 of the automatic transport device 1A.
- the object detection range C1 of the object detection sensor 10-1 is, for example, a fan-shaped area centered on the object detection sensor 10-1 with a radius of 10 m and a detection range angle of about 240°. , including the front and left oblique rear of the automatic transport device 1A.
- the object detection range C2 of the object detection sensor 10-2 is, for example, a fan-shaped area centered on the object detection sensor 10-2 with a radius of 10 m and a detection range angle of about 240°. Including forward. Note that illustration of detection limit lines (fan-shaped arcs) in the depth direction of the object detection range C1 and the object detection range C2 is omitted.
- the entire horizontal circumference of the automatic transport device 1A is set as the object detection range. be able to.
- a blind spot D of a slight size occurs on the left and right sides of the automatic transport device 1A.
- the area D is immediately included in the object detection range C1 or the object detection range C2. Therefore, an object in the blind spot D is also detected by the object detection sensor 10-1 or the object detection sensor 10-2 immediately after.
- FIG. 4 is a top view of a load collapse detection range E and obstacle detection ranges F1 and F2 in which information is stored in the detection range information storage unit 40 of the automatic transport device 1A.
- the load collapse detection range E is an area adjacent to the automatic transport device 1A, as indicated by the dotted line in FIG. As another example, the load collapse detection range E may surround the automatic carrier 1A when viewed from above the automatic carrier 1A.
- the obstacle detection range F1 is the area around the cargo collapse detection range E, and is a predetermined area within the object detection range C1, for example, a sector with a radius of 3 m centered on the object detection sensor 10-1 and a detection range angle of about 240°. is the area obtained by excluding the cargo collapse detection range E from the area of .
- the obstacle detection range F2 is the area around the cargo collapse detection range E, and is a predetermined area within the object detection range C2, for example, a sector centered on the object detection sensor 10-2 with a radius of 3 m and a detection range angle of about 240°. is the area obtained by excluding the cargo collapse detection range E from the area of .
- the outer edges of the obstacle detection range F1 and the obstacle detection range F2 are set inside the detection limit line in the depth direction of the object detection range C1 and the object detection range C2. do not have.
- the obstacle detection ranges F1 and F2 are sufficiently larger than the load collapse detection range E, and even if a person moves one step from the outer periphery of the obstacle detection range F1 or F2 toward the automatic transport device 1A with long strides, the load collapse is detected. It is set so that it does not reach the range E.
- FIG. 5 is a flow chart showing the operation of the automatic transport device 1A of the first embodiment.
- the automatic transport device 1A loads a load and starts traveling to a predetermined destination under the control of the travel mechanism 20 by the travel control unit 31 (“YES” in S1)
- the object detection sensor 10-1 moves to the object detection range C1.
- the object detection sensor 10-2 starts the process of detecting an object within the object detection range C2.
- the object detection processing unit 32A acquires the information of the detection results, and based on the information stored in the detection range information storage unit 40, It is monitored whether an object is detected within the load collapse detection range E and the obstacle detection ranges F1 and F2 (S2).
- FIG. 6A is a top view of the state when the object X is detected within the obstacle detection range F1 while the automatic transport device 1A is running.
- the object detection processing unit 32A detects an object X as an obstacle within the obstacle detection range F1, it executes obstacle handling processing (S6).
- the obstacle handling process for example, a process of issuing an alarm from the output unit 50 under the control of the output control unit 34 to notify that the automatic transport device 1A may come into contact with the obstacle, or There is a process of changing the travel route under the control of the travel control unit 31 so that 1A does not come into contact with the obstacle.
- step S7 After execution of the obstacle handling process, if the automatic transport device 1A has not yet arrived at the destination ("NO" in S7), the process returns to step S2, until an object is detected in the load collapse detection range E ( "NO" in S3), the processing of steps S4 to S7 is repeated.
- the position information of the object X detected in the obstacle detection ranges F1 and F2 is stored over time, and the specific object X can be tracked.
- FIG. 6B is a top view of the state when the object Y is detected within the cargo collapse detection range E while the automatic transport device 1A is running.
- the cargo collapse determination unit 33 determines that, if the information detected and tracked in the obstacle detection range F1 or F2 is stored in the object detection processing unit 32A, " It is determined that the object Y was detected within the obstacle detection range F1 or F2 before being detected in the load collapse detection range E.”
- the load collapse determination unit 33 determines that "the object Y was detected within the obstacle detection range F1 or F2 before being detected in the load collapse detection range E" ("YES" in S8), that is, When the object Y passes through the obstacle detection range F1 or F2 and enters the load collapse detection range E, the object Y is not a collapsed load loaded on the automatic carrier 1A but is on the travel path. It is determined that there is an obstacle (S9).
- the cargo collapse determination unit 33 determines that the object Y is an obstacle, the process proceeds to step S6, and an obstacle handling process is executed (S6).
- the automatic transport device 1A has not yet arrived at the destination ("NO" in S7), the process returns to step S2.
- step S8 described above regarding the object Y detected in the load collapse detection range E, if the information detected and tracked in the obstacle detection range F1 or F2 is not stored in the object detection processing unit 32A ("NO in S8 ”), the collapse determination unit 33 determines that the object Y has fallen due to collapse of cargo (S10), and executes processing for dealing with collapse of cargo (S11).
- Examples of processing for dealing with cargo collapse include processing for stopping the automatic transport device 1A under the control of the travel control unit 31, and outputting an alarm for notifying that cargo collapse has occurred in the automatic transport device 1A under the control of the output control unit 34. There are a process of issuing a notification from the unit 50, a process of transmitting notification information indicating that the automatic transport apparatus 1A has stopped due to collapse of cargo to another automatic transport apparatus or a management apparatus, and the like.
- the location where the automatic transport device 1A is stopped when the other automatic transport device is traveling can avoid the
- the management device instructs the devices in the sheet metal processing facility to transfer the cargo to other automatic transport devices thereafter. It is possible to transmit an instruction to reduce the load amount when loading a container, an instruction to change the loading style, and the like. By transmitting these instructions from the management device, it is possible to suppress the occurrence of collapse of cargo when the automatic carrier device conveys the cargo in the sheet metal processing facility thereafter.
- the management device acquires notification information indicating that the automatic transport device 1A has stopped due to collapse of cargo, it anticipates that it will take time to recover, and determines the order of execution of processing in the sheet metal processing equipment. You may make it change.
- the object when an object is detected around a running automatic carrier, the object may be caused by the collapse of the cargo loaded on the automatic carrier or by an obstacle on the traveling route. can be identified. As a result, it is possible to accurately detect the collapse of the cargo loaded on the automatic transport device. Furthermore, it is possible to quickly resume running of the automatic transport device by executing appropriate countermeasure processing.
- FIG. 7 is a block diagram showing the configuration of the automatic transport device 1B of the second embodiment.
- the automatic transport device 1B has the same configuration as the automatic transport device 1A described in the first embodiment except that the load information acquisition unit 35 as one function of the load collapse detection device 60B is provided in the CPU 30B. A detailed description of functional portions is omitted.
- the load information acquisition unit 35 is based on information acquired by a load sensor (not shown) installed in the automatic transport device 1B or information input by an operator. Acquire information such as size, shape, loading position, etc.
- FIG. 8 is a flow chart showing the operation of the automatic transport device 1B of the first embodiment.
- the object detection processing section 32B acquires information on these detection results.
- the load information acquisition unit 35 determines the load loaded on the automatic transport device 1B based on information acquired by a load sensor installed in the automatic transport device 1B or information input by an operator. Acquire information such as size, shape, and loading position.
- the load information acquisition unit 35 also acquires information on the load collapse detection range E and the obstacle detection ranges F ⁇ b>1 and F ⁇ b>2 stored in the detection range information storage unit 40 .
- the object detection processing unit 32B detects the acquired collapse of cargo based on the information acquired by the load information acquiring unit 35 or the information on the traveling direction and traveling speed of the automatic transport device 1B controlled by the traveling control unit 31.
- Information on range E is updated (S20). A specific example of the information update process of the collapse detection range E executed by the object detection processing unit 32B will be described with reference to FIGS. 9A, B, 10A, B, 11A, B, and 12.
- FIG. 9A is a top view of the updated load collapse detection range when the automatic transport device 1B loaded with the load Z1 accelerates forward as indicated by the arrow.
- the object detection processing unit 32B updates the load collapse detection range to the area E1 behind the automatic transport device 1B.
- FIG. 9B is a top view of the updated load collapse detection range when the automatic transport device 1B loaded with the load Z1 decelerates while traveling forward as indicated by the arrow.
- the object detection processing unit 32B updates the cargo collapse detection range to the region E2 in front of the automatic carrier 1B.
- FIG. 10A is a top view of the updated load collapse detection range when the automatic transport device 1B loaded with the load Z1 turns leftward as indicated by the arrow.
- the object detection processing unit 32B updates the cargo collapse detection range to the area E3 on the right side of the automatic carrier 1B.
- FIG. 10B is a top view of the updated load collapse detection range when the automatic transport device 1B loaded with the load Z1 turns rightward as indicated by the arrow.
- the object detection processing section 32B updates the cargo collapse detection range to the area E4 on the left side of the automatic carrier 1B.
- FIG. 11A is a top view of the updated load collapse detection range when the automatic transport device 1B is traveling with a long load Z2 loaded.
- the range in which the load Z2 may fall when it collapses becomes wider. Therefore, when the automatic transport device 1B is loading a long load Z2, the object detection processing unit 32B updates the load collapse detection range to a wide area E5. The same applies to the case where the automatic transport device 1B loads large loads.
- FIG. 11B is a top view of the updated load collapse detection range when the automatic transport device 1B is traveling with a small load Z3 loaded.
- the range in which the load Z3 may fall when it collapses becomes narrower. Therefore, when the automatic transport device 1B is loading a small load Z3, the object detection processing unit 32B updates the load collapse detection range to a narrow region E6.
- FIG. 12 is a top view of the updated cargo collapse detection range when the automatic carrier 1B is running with the center of gravity of the load Z4 loaded on the automatic carrier 1B biased forward.
- the object detection processing unit 32B updates the load collapse detection range to a wide area E7 in front of the automatic transport device 1B.
- the load collapse detection range may be updated to an area in which the direction of the center of gravity of the cargo is biased.
- the object detection processing unit 32B After updating the information on the cargo collapse detection range E as described above, the object detection processing unit 32B, as shown in FIG. It monitors whether or not (S2). Since the processes executed in steps S3 to S11 are the same as the processes described in the first embodiment, detailed description thereof will be omitted.
- the object detection processing unit 32B obtains the information of the load collapse detection range E based on the information obtained by the load information obtaining unit 35 or the information on the traveling direction and traveling speed of the automatic transport device 1B.
- the obstacle detection ranges F1 and F2 may also be updated to areas in the same direction as the load collapse detection range E. By updating the obstacle detection ranges F1 and F2 in this way, it is possible to further reduce the processing load of the cargo collapse detection device 60B.
- the object detection sensors 10-1 and 10-2 are installed in front and behind the automatic transport devices 1A and 1B, and the object detection range C1 and the object detection range C1 of the object detection sensor 10-1
- the present invention is not limited to this.
- FIG. 13A an object detection sensor 10-3 composed of 3D-LiDAR is installed at one end of the upper portion of the automatic transport devices 1A and 1B, and a dome-shaped surrounding space C3 including the upper portions of the automatic transport devices 1A and 1B is used as an object. It is explanatory drawing in the case of setting it as a detection range.
- FIG. 13A an object detection sensor 10-3 composed of 3D-LiDAR is installed at one end of the upper portion of the automatic transport devices 1A and 1B, and a dome-shaped surrounding space C3 including the upper portions of the automatic transport devices 1A and 1B is used as an object.
- FIG. 13B an object detection sensor 10-4 composed of 2D-LiDAR capable of detecting in 360 ° direction is installed at one end of the upper part of the automatic transport devices 1A and 1B, and the plane of the automatic transport devices 1A and 1B in all directions It is explanatory drawing in the case of making the surrounding area
- FIG. 13C is an explanatory diagram of a case where the object detection sensors 10-5 are installed on each of the four side surfaces of the automatic transport devices 1A and 1B, and the object detection range is defined as a fan-shaped area C5 that spreads forward from each installation position. . In this way, the installation position and object detection range of the object detection sensor can be changed as appropriate.
- the object detection sensor is not limited to the LiDAR sensor, but may be composed of an ultrasonic sensor, radio wave radar, or the like.
- the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the gist of the present invention.
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Abstract
Description
〈第1実施形態による自動搬送装置の構成〉
以下、第1実施形態の自動搬送装置(AGV;Automated Guided Vehicle)の構成について、添付図面を参照して説明する。図1は、第1実施形態による自動搬送装置1Aの外観斜視図であり、図2は、自動搬送装置1Aの構成を示すブロック図である。
本実施形態で利用する物体検知センサ10-1および10-2の物体検知範囲について説明する。図3は、自動搬送装置1Aの物体検知センサ10-1の物体検知範囲C1および物体検知センサ10-2の物体検知範囲C2を上方向から見た図である。
〈第2実施形態による自動搬送装置1Bの構成〉
図7は、第2実施形態の自動搬送装置1Bの構成を示すブロック図である。自動搬送装置1Bは、CPU30B内に荷崩れ検知装置60Bの一機能としての積載物情報取得部35を有する他は、第1実施形態で説明した自動搬送装置1Aの構成と同様であるため、同一機能を有する部分の詳細な説明は省略する。
〈第2実施形態による自動搬送装置1Bの動作〉
図8は、第1実施形態の自動搬送装置1Bの動作を示すフローチャートである。自動搬送装置1Bが荷物を積載し、走行制御部31による走行機構20の制御により所定の目的地までの走行を開始すると(S1の「YES」)、物体検知センサ10-1が物体検知範囲C1内にある物体を検知する処理を開始し、物体検知センサ10-2が物体検知範囲C2内にある物体を検知する処理を開始する。
Claims (3)
- 自動搬送装置の周囲にある物体を検知する物体検知センサに通信可能に接続された荷崩れ検知装置であって、
前記物体検知センサによる検知範囲のうち前記自動搬送装置に隣接した荷崩れ検知範囲を示す情報と、前記物体検知センサによる検知範囲のうち前記荷崩れ検知範囲の周囲の障害物検知範囲を示す情報とを記憶する検知範囲情報記憶部と、
前記自動搬送装置の走行中に前記物体検知センサによる検知結果を取得し、前記荷崩れ検知範囲にある物体および前記障害物検知範囲内にある物体を検知する物体検知処理部と、
前記物体検知処理部で前記荷崩れ検知範囲内にある物体が検知されると、前記物体が前記荷崩れ検知範囲で検知される前に前記障害物検知範囲内で検知されていたか否かを判定し、前記荷崩れ検知範囲で検知される前に前記障害物検知範囲内で検知されていなければ、前記物体が荷崩れにより落下したものであると判定する荷崩れ判定部と、を備えた自動搬送装置の荷崩れ検知装置。 - 前記物体検知処理部は、前記自動搬送装置の走行状態に基づいて、前記荷崩れ検知範囲を更新する、請求項1に記載の自動搬送装置の荷崩れ検知装置。
- 自動搬送装置の周囲にある物体を検知する物体検知センサに通信可能に接続された荷崩れ検知装置が、
前記物体検知センサによる検知範囲のうち前記自動搬送装置に隣接した荷崩れ検知範囲を示す情報と、前記物体検知センサによる検知範囲のうち前記荷崩れ検知範囲の周囲の障害物検知範囲を示す情報とを記憶し、
前記自動搬送装置の走行中に前記物体検知センサによる検知結果を取得し、前記物体検知センサで前記荷崩れ検知範囲および前記障害物検知範囲内で物体が検知されたか否かを監視し、
前記荷崩れ検知範囲内にある物体が検知されると、前記物体が前記荷崩れ検知範囲で検知される前に前記障害物検知範囲内で検知されていたか否かを判定し、前記荷崩れ検知範囲で検知される前に前記障害物検知範囲内で検知されていなければ、前記物体が荷崩れにより落下したものであると判定する、自動搬送装置の荷崩れ検知方法。
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JP4803049B2 (ja) | 2007-01-19 | 2011-10-26 | 村田機械株式会社 | 搬送車システム |
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