WO2020235255A1 - 走行車システム及び走行車の制御方法 - Google Patents
走行車システム及び走行車の制御方法 Download PDFInfo
- Publication number
- WO2020235255A1 WO2020235255A1 PCT/JP2020/016302 JP2020016302W WO2020235255A1 WO 2020235255 A1 WO2020235255 A1 WO 2020235255A1 JP 2020016302 W JP2020016302 W JP 2020016302W WO 2020235255 A1 WO2020235255 A1 WO 2020235255A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- traveling vehicle
- traveling
- occupancy
- request
- blocking section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- 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
- G05D1/22—Command input arrangements
- G05D1/221—Remote-control arrangements
- G05D1/225—Remote-control arrangements operated by off-board computers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
- B65G1/02—Storage devices
- B65G1/04—Storage devices mechanical
- B65G1/0464—Storage devices mechanical with access from above
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
-
- 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
- G05D1/02—Control of position or course in two dimensions
- G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
- G05D1/0287—Control of position or course in two dimensions specially adapted to land vehicles involving a plurality of land vehicles, e.g. fleet or convoy travelling
-
- 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
- G05D1/246—Arrangements for determining position or orientation using environment maps, e.g. simultaneous localisation and mapping [SLAM]
- G05D1/2464—Arrangements for determining position or orientation using environment maps, e.g. simultaneous localisation and mapping [SLAM] using an occupancy grid
-
- 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
-
- 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
- G05D1/69—Coordinated control of the position or course of two or more vehicles
- G05D1/693—Coordinated control of the position or course of two or more vehicles for avoiding collisions between vehicles
-
- 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
- G05D1/69—Coordinated control of the position or course of two or more vehicles
- G05D1/698—Control allocation
- G05D1/6987—Control allocation by centralised control off-board any of the vehicles
-
- 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
- G05D2109/14—Land vehicles moving on a grid
Definitions
- the present invention relates to a traveling vehicle system and a traveling vehicle control method.
- a traveling vehicle system in which an article such as a transport container (FOUP, reticle Pod) for accommodating a semiconductor wafer or a reticle is conveyed by a traveling vehicle.
- a traveling vehicle system a system including a plurality of traveling vehicles traveling on a track and a controller for controlling the plurality of traveling vehicles is known.
- Each of the plurality of traveling vehicles transmits information such as its own current position to the controller by wireless communication or the like.
- the controller determines the traveling vehicle in charge of transporting the article based on the position of the traveling vehicle and transmits the transport command.
- the track used in the above traveling vehicle system generally has a plurality of intersections.
- a blocking section is defined in which exclusive control is performed to prevent other traveling vehicles from entering when occupied by any one of the plurality of traveling vehicles.
- a traveling vehicle can pass by occupying the blocking section for which the occupancy permission has been obtained when the occupancy permission for the blocking section is obtained from the controller, but the occupancy permission is obtained when the occupancy permission is not obtained from the controller. It is controlled not to enter the no blocking section.
- Patent Document 1 In the configuration of Patent Document 1, of all the blocking sections that the traveling vehicle should pass through, the exclusive control that permits the blocking section is executed.
- the traveling vehicle temporarily stops and performs a predetermined operation before the traveling vehicle finishes passing through the permitted blocking section, but the traveling vehicle passes before the predetermined operation is performed. If permission is obtained in advance for the blocking section to be used, the blocking section will be unnecessarily occupied while the traveling vehicle is performing a predetermined operation, and the operation of other traveling vehicles will be hindered. was there.
- An object of the present invention is to prevent interference between traveling vehicles by exclusive control and to avoid obstructing the operation of other traveling vehicles by exclusive control as much as possible.
- the traveling vehicle system includes a plurality of traveling vehicles, a controller capable of communicating with the plurality of traveling vehicles and controlling the plurality of traveling vehicles, and a plurality of traveling vehicles in the traveling region of the traveling vehicle.
- Multiple blocking sections are defined in which exclusive control is performed to prevent other traveling vehicles from entering when occupied by any one of the traveling vehicles, and the traveling vehicle is occupied when the controller obtains permission to occupy the blocking section. It is a traveling vehicle system that can operate by occupying a blocking section for which permission has been obtained, but is controlled so that it does not operate in a blocking section for which occupancy permission has not been obtained when occupancy permission is not obtained from the controller.
- the controller operates the traveling vehicle with a break from the start of the traveling to the stop before the execution of the predetermined operation included in the series of operations. It is determined whether or not to give the traveling vehicle the occupancy permission for the blocking section to be occupied in order to execute.
- the controller should occupy a blocking section for traveling until the vehicle stops at a predetermined stop position immediately before the moving vehicle's transfer destination of the article.
- the exclusive control for the blocking section to be occupied for the transfer operation by the traveling vehicle may be executed.
- the traveling vehicle has a first occupancy permission request for the blocking section to be occupied in order to travel until it stops at a predetermined stop position and a second occupancy permission request for the blocking section to be occupied for the transfer operation. And are transmitted to the controller as separate requests, and the controller may execute the exclusive control for the first occupancy permission request and then the exclusive control for the second occupancy permission request.
- the predetermined stop position may be a blocking section for executing the transfer operation or a blocking section adjacent to the blocking section for executing the transfer operation.
- the controller executes exclusive control for the blocking section to be occupied in order to travel until the traveling vehicle stops at a position where the traveling vehicle changes direction in a series of operations to be executed by the traveling vehicle. It may be configured to execute exclusive control for the blocking section to be occupied in order to travel after the direction is changed.
- the traveling vehicle has a third occupancy permission request for the blocking section to be occupied to travel until it stops at the position where the direction is changed, and a fourth occupancy for the blocking section to be occupied to travel after the direction change.
- the permission request may be transmitted to the controller as a separate request, and the controller may execute the exclusive control for the third occupancy permission request and then the exclusive control for the fourth occupancy permission request.
- the controller executes exclusive control for the blocking section to be occupied in order to travel until the traveling vehicle stops at the position where the traveling vehicle is charged in a series of operations to be executed by the traveling vehicle, and then the traveling vehicle is charged. It may be configured to execute exclusive control for the blocking section to be occupied in order to run later.
- the traveling vehicle has a fifth occupancy permission request for the blocking section to be occupied to travel until it stops at the charging position and a sixth occupancy permission request for the blocking section to be occupied to travel after charging. Is transmitted to the controller as a separate request, and the controller may execute the exclusive control for the fifth occupancy permission request and then execute the exclusive control for the sixth occupancy permission request.
- it has a plurality of first orbits extending along the first direction and a plurality of second orbits extending along a second direction different from the first direction, and a plurality of first orbits and a plurality of second orbits. It is provided with a grid-like track that forms a plurality of squares by the second track of the above, and a plurality of traveling vehicles travel on the first track or the second track along the grid-like track, and at one square in the grid-like track.
- a blocking section may be set for each grid cell.
- the traveling vehicle control method includes a plurality of traveling vehicles, a controller capable of communicating with the plurality of traveling vehicles, and a controller for controlling the plurality of traveling vehicles.
- a plurality of blocking sections are defined in which exclusive control is performed to prevent other traveling vehicles from entering when occupied by any one of a plurality of traveling vehicles, and the traveling vehicle obtains permission to occupy the blocking section from the controller. It is possible to operate by occupying the blocking section for which the occupancy permission has been obtained, but when the occupancy permission is not obtained from the controller, the vehicle is controlled so as not to operate in the blocking section for which the occupancy permission has not been obtained.
- a method of controlling a vehicle in which a controller performs a series of operations to be performed by a traveling vehicle, from the start of the traveling vehicle to the stopping before the execution of a predetermined operation included in the series of operations.
- a delimiter it includes determining whether or not to give the traveling vehicle an occupancy permission for the blocking section to be occupied in order for the traveling vehicle to perform the operation.
- exclusive control is performed in a series of operations to be executed by the traveling vehicle until the vehicle stops before the predetermined operation is executed.
- the blocking section occupied at one time can be shortened as compared with the method of performing exclusive control for all sections that the traveling vehicle should pass through. That is, it is possible to prevent interference with other traveling vehicles by exclusive control and to avoid obstructing the operation of other traveling vehicles as much as possible.
- a blocking section to be occupied in order for the controller to travel until the vehicle stops at a predetermined stop position immediately before the moving vehicle to the transfer destination of the article.
- the exclusive control for the blocking section to be occupied for the transfer operation by the traveling vehicle is executed after the exclusive control for is executed, the blocking section and the transfer for traveling until the vehicle stops at the predetermined stop position.
- the blocking section occupied at one time can be shortened as compared with the configuration in which exclusive control is collectively executed for the blocking section for executing the operation.
- the traveling vehicle has a first occupancy permission request for the blocking section to be occupied in order to travel until it stops at a predetermined stop position and a second occupancy permission request for the blocking section to be occupied for the transfer operation. Is transmitted to the controller as a separate request, the controller executes the exclusive control for the first occupancy permission request, and then the traveling vehicle side executes the first and first exclusive controls for the second occupancy permission request. 2 Since the occupancy permission request is transmitted, the load can be distributed. Further, in a configuration in which the predetermined stop position is a blocking section for executing the transfer operation or a blocking section adjacent to the blocking section for executing the transfer operation, the traveling vehicle is moved to a position close to the execution position of the transfer operation. Since it is run, the blocking section occupied for the transfer operation can be shortened.
- the controller executes exclusive control for the blocking section to be occupied in order to travel until the traveling vehicle stops at a position where the traveling vehicle changes direction in a series of operations to be executed by the traveling vehicle.
- the blocking section for traveling until the vehicle stops at the position where the direction is changed and the blocking section for traveling after the direction change are collectively described.
- the blocking interval occupied at one time can be shortened.
- the traveling vehicle has a third occupancy permission request for the blocking section to be occupied to travel until it stops at the position where the direction is changed, and a fourth occupancy for the blocking section to be occupied to travel after the direction change.
- the controller executes the exclusive control for the third occupancy permission request, and then the exclusive control for the fourth occupancy permission request is executed, the traveling vehicle is the first. Since the third and fourth occupancy permission requests are transmitted, the load can be distributed.
- the controller executes exclusive control for the blocking section to be occupied in order to travel until the traveling vehicle stops at the position where the traveling vehicle is charged in a series of operations to be executed by the traveling vehicle, and then the traveling vehicle is charged.
- exclusive control is collectively performed for the blocking section for traveling until it stops at the charging position and the blocking section for traveling after charging.
- the blocking interval occupied at one time can be shortened compared to the configuration to be executed.
- the traveling vehicle has a fifth occupancy permission request for the blocking section to be occupied to run until it stops at the charging position and a sixth occupancy permission request for the blocking section to be occupied to run after charging.
- the load can be distributed because the traveling vehicle side determines the timing of transmitting the fifth and sixth occupancy permission requests according to its own position.
- it has a plurality of first orbits extending along the first direction and a plurality of second orbits extending along a second direction different from the first direction, and a plurality of first orbits and a plurality of second orbits. It is provided with a grid-like track that forms a plurality of squares by the second track of the above, and the plurality of traveling vehicles travel on the first track or the second track along the grid-like track, and are one grid in the grid-like track. In the configuration in which the blocking section is set for each grid cell, since all the grid cells on the grid-like track are intersections, no matter which grid cell the traveling vehicle stops at, it interferes with the passage of other traveling vehicles.
- the running efficiency tends to be lowered by hindering the running of other traveling vehicles as compared with the configuration of a traveling vehicle system having a track other than the lattice-shaped track.
- the above-mentioned decrease in running efficiency can be suppressed.
- the traveling direction of the traveling vehicle V can be changed from the state shown in the following figure to another direction, for example, traveling in a curved direction.
- the direction perpendicular to the XY plane is referred to as the Z direction.
- the direction indicated by the arrow in the figure is the + direction
- the direction opposite to the direction indicated by the arrow is the ⁇ direction.
- the turning direction around the vertical axis or the Z axis is referred to as the ⁇ Z direction.
- FIG. 1 is a perspective view showing an example of a traveling vehicle system SYS according to the first embodiment.
- FIG. 2 is a perspective view of a traveling vehicle V used in the traveling vehicle system SYS shown in FIG.
- FIG. 3 is a side view showing an example of the traveling vehicle V.
- FIG. 4 is a block diagram showing an example of the traveling vehicle V, the upper controller HC, and the blocking controller BC.
- the traveling vehicle system SYS is a system for transporting the article M by the traveling vehicle V in, for example, a clean room of a semiconductor manufacturing factory.
- the traveling vehicle system SYS is a controller (upper controller HC) that controls a first traveling vehicle V1 to an nth traveling vehicle Vn (hereinafter, may be collectively referred to as a traveling vehicle V) (see FIG. 4) and a plurality of traveling vehicles V. , Blocking controller BC).
- a traveling vehicle V a ceiling traveling vehicle
- the traveling vehicle V moves along the track R of the traveling vehicle system SYS.
- the track R is a traveling region of the traveling vehicle V.
- the traveling vehicle V moves along the track R of the traveling vehicle system SYS and conveys an article M such as a FOUP accommodating a semiconductor wafer or a reticle Pod accommodating a reticle. Since the traveling vehicle V transports the article M, it may be referred to as a transport vehicle.
- an article M such as a FOUP accommodating a semiconductor wafer or a reticle Pod accommodating a reticle. Since the traveling vehicle V transports the article M, it may be referred to as a transport vehicle.
- the track R is laid on or near the ceiling of a building such as a clean room.
- the track R is provided adjacent to a processing device (not shown), a stocker (automated warehouse, not shown), a buffer (not shown), or the like.
- the processing device is, for example, an exposure device, a coater developer, a film forming device, an etching device, or the like, and performs various processing on a semiconductor wafer in a container carried by a traveling vehicle V.
- the stocker stores the article M carried by the traveling vehicle V.
- the above buffer temporarily stores the article M carried by the traveling vehicle V.
- Orbit R is an example of the form of the orbit.
- the orbit R is a grid-like orbit having a plurality of first orbits R1, a plurality of second orbits R2, and a plurality of intersections R3.
- the orbital R will be referred to as a grid-like orbital R.
- Each of the plurality of first orbits R1 extends along the X direction (first direction DR1).
- Each of the plurality of second orbits R2 extends along the Y direction (second direction DR2).
- the grid-like orbits R are formed in a grid pattern in a plan view by a plurality of first orbitals R1 and a plurality of second orbitals R2.
- the grid-like orbit R forms a plurality of squares by the plurality of first orbits R1 and the plurality of second orbits R2.
- the first direction DR1 and the second direction DR2 are orthogonal to each other, and the plurality of first orbitals R1 and the plurality of second orbitals R2 are provided along the directions orthogonal to each other, but directly to each other. It is provided so as not to intersect.
- the intersection R3 is arranged at a portion where the first orbit R1 and the second orbit R2 intersect. The intersection R3 is adjacent to the first orbit R1 in the first direction DR1 and adjacent to the second orbit R2 in the second direction DR2.
- the intersection R3 is a connecting track that connects the first track R1 and the second track R2, connects the first tracks R1 to each other, and connects the second tracks R2 to each other.
- the intersection R3 when the traveling vehicle V travels along the first track R1, when the traveling vehicle V travels along the second track R2, and when the traveling vehicle V travels along the first track R1 to the second track R2.
- it is a track used when traveling from the second track R2 to the first track R1 and when traveling.
- the grid-shaped orbits R are provided in the directions in which the plurality of first orbitals R1 and the plurality of second orbitals R2 are orthogonal to each other, so that the plurality of grid cells C (cells) are adjacent to each other in a plan view.
- One grid cell C corresponds to one square, and in a plan view, two adjacent first orbitals R1 in the second direction DR2 and two adjacent second orbitals R2 in the first direction DR1. It is the part surrounded by. Note that FIG. 1 shows a part of the grid-like orbit R, and the grid-like orbit R has the same configuration in the first direction DR1 (X direction) and the second direction DR2 (Y direction) from the configuration shown in the figure. Are continuously formed.
- the first track R1, the second track R2, and the intersection R3 are suspended from a ceiling (not shown) by a hanging member H (see FIG. 1).
- the suspension member H includes a first portion H1 for suspending the first track R1, a second portion H2 for suspending the second track R2, and a third portion H3 for suspending the intersection R3.
- the first portion H1 and the second portion H2 are provided at two locations sandwiching the third portion H3, respectively.
- the first track R1, the second track R2, and the intersection R3 each have traveling surfaces R1a, R2a, and R3a on which the traveling wheels 21 described later of the traveling vehicle V travel.
- a gap D is formed between the first track R1 and the intersection R3, and between the second track R2 and the intersection R3.
- the gap D is a part of the traveling vehicle V when the traveling vehicle V travels on the first track R1 and crosses the second track R2, or when traveling on the second track R2 and crosses the first track R1. This is a portion through which the connecting portion 30 described later passes. Therefore, the gap D is provided with a width through which the connecting portion 30 can pass.
- the first track R1, the second track R2, and the intersection R3 are provided along the same or substantially the same horizontal plane. In the present embodiment, the first track R1, the second track R2, and the intersection R3 are arranged on the same or substantially the same horizontal plane as the traveling surfaces R1a, R2a, and R3a.
- the traveling vehicle system SYS is equipped with a communication system (not shown).
- the communication system is used for communication of the traveling vehicle V, the host controller HC, and the blocking controller BC.
- the traveling vehicle V, the host controller HC, and the blocking controller BC are each communicably connected via a communication system.
- a plurality of blocking sections B in which exclusive control is performed so as not to allow the other traveling vehicle V to enter when occupied by any one of the plurality of traveling vehicles V are defined (FIG. 6). See 1st class).
- the blocking section B is set for each grid cell C.
- the traveling vehicle V can operate by occupying the blocking section B for which the occupancy permission is obtained when the occupancy permission for the blocking section B is obtained from the blocking controller BC, but the occupancy permission cannot be obtained from the blocking controller BC. Is controlled so as not to operate in the blocking section B for which occupancy permission has not been obtained. Interference between traveling vehicles V can be prevented by exclusive control. Exclusive control will be further described later.
- the traveling vehicle V has a main body portion 10, a traveling portion 20, a connecting portion 30, and a control unit 50 (see FIGS. 3 and 4).
- the main body 10 is arranged below the grid-like track R (-Z side).
- the main body 10 is formed, for example, in a rectangular shape in a plan view.
- the main body 10 is formed in a size that fits in one grid cell C (see FIG. 1) in the grid-like orbit R in a plan view. Therefore, a space is secured for passing by another traveling vehicle V traveling on the adjacent first track R1 or second track R2.
- the main body 10 includes an upper unit 17 and a transfer device 18.
- the upper unit 17 is suspended from the traveling portion 20 via the connecting portion 30.
- the upper unit 17 has, for example, a rectangular shape in a plan view, and has four corners on the upper surface 17a.
- the main body portion 10 has a traveling wheel 21, a connecting portion 30, and a direction changing mechanism 34 at each of the four corner portions.
- the traveling wheels 21 arranged at the four corners of the main body 10 allow the main body 10 to be stably suspended and the main body 10 to be stably traveled.
- the transfer device 18 is provided below the upper unit 17.
- the transfer device 18 can rotate around the rotation axis AX1 in the Z direction (vertical direction).
- the transfer device 18 includes an article holding unit 13 that holds the article M, an elevating drive unit 14 that moves the article holding unit 13 up and down in the vertical direction, and a side-out mechanism 11 that slides the elevating drive unit 14 in the horizontal direction. It has a rotating portion 12 for holding the horizontal alignment mechanism 11.
- the article holding portion 13 suspends and holds the article M by gripping the flange portion Ma of the article M.
- the article holding portion 13 is, for example, a chuck having a claw portion 13a that can move in the horizontal direction, and the claw portion 13a is advanced below the flange portion Ma of the article M to raise the article holding portion 13 to raise the article. Hold M.
- the article holding portion 13 is connected to a hanging member 13b such as a wire or a belt.
- the elevating drive unit 14 is, for example, a hoist, and the article holding portion 13 is lowered by feeding out the hanging member 13b, and the article holding portion 13 is raised by winding up the hanging member 13b.
- the elevating drive unit 14 is controlled by the control unit 50 and lowers or raises the article holding unit 13 at a predetermined speed. Further, the elevating drive unit 14 is controlled by the control unit 50 to hold the article holding unit 13 at a target height.
- the side-out mechanism 11 has, for example, a plurality of movable plates arranged so as to be stacked in the Z direction.
- the movable plate is relatively movable in the Y direction.
- An elevating drive unit 14 is attached to the lowermost movable plate.
- the side-out mechanism 11 moves the movable plate by a drive device (not shown), and makes the elevating drive unit 14 and the article holding unit 13 attached to the lowermost movable plate orthogonal to, for example, the traveling direction of the traveling vehicle V. It can be moved horizontally (sliding).
- the rotating portion 12 is provided between the side-out mechanism 11 and the upper unit 17.
- the rotating unit 12 has a rotating member 12a and a rotating driving unit 12b.
- the rotating member 12a is provided so as to be rotatable in the axial direction in the vertical direction.
- the rotating member 12a supports the side-out mechanism 11.
- an electric motor or the like is used to rotate the rotation member 12a in the axial direction of the rotation shaft AX1.
- the rotating unit 12 rotates the rotating member 12a by the driving force from the rotating driving unit 12b, and rotates the side-out mechanism 11 (elevating drive unit 14 and the article holding unit 13) in the axial direction of the rotating shaft AX1.
- the traveling vehicle V can deliver the article M to a predetermined position.
- a cover W may be provided so as to surround the transfer device 18 and the article M held by the transfer device 18.
- the cover W has a tubular shape with the lower end open, and has a shape in which a portion where the movable plate of the lateral protrusion mechanism 11 protrudes is cut out.
- the upper end of the cover W is attached to the rotating member 12a of the rotating portion 12, and the cover W rotates around the axis of the rotating shaft AX1 as the rotating member 12a rotates.
- the traveling unit 20 has a traveling wheel 21 and an auxiliary wheel 22.
- the traveling wheels 21 are arranged at the four corners of the upper surface 17a of the upper unit 17 (main body 10). Each of the traveling wheels 21 is attached to an axle provided on the connecting portion 30. The axles are provided parallel or substantially parallel along the XY plane.
- Each of the traveling wheels 21 is rotationally driven by the driving force of the traveling driving unit 33, which will be described later.
- Each of the traveling wheels 21 rolls the traveling surfaces R1a, R2a, and R3a of the first orbit R1, the second orbit R2, and the intersection R3 on the orbit R, and causes the traveling vehicle V to travel. Note that all of the four traveling wheels 21 are not limited to being rotationally driven by the driving force of the traveling driving unit 33, and some of the four traveling wheels 21 may be rotationally driven.
- the traveling wheel 21 is provided so as to be able to turn in the ⁇ Z direction about the turning shaft AX2.
- the traveling wheel 21 is turned in the ⁇ Z direction by the direction changing mechanism 34 described later, and as a result, the traveling direction of the traveling vehicle V can be changed.
- One auxiliary wheel 22 is arranged before and after the traveling wheel 21 in the traveling direction.
- Each of the auxiliary wheels 22, like the traveling wheels 21, is rotatable around an axle parallel or substantially parallel along the XY plane.
- the lower end of the auxiliary wheel 22 is set to be higher than the lower end of the traveling wheel 21.
- the present invention is not limited to providing two auxiliary wheels 22 on one traveling wheel 21, and for example, one auxiliary wheel 22 may be provided on one traveling wheel 21, or one auxiliary wheel 22 may not be provided. May be good.
- the connecting portion 30 connects the upper unit 17 of the main body portion 10 and the traveling portion 20.
- the connecting portion 30 is provided at each of the four corner portions of the upper surface 17a of the upper unit 17 (main body portion 10).
- the main body portion 10 is suspended from the traveling portion 20 by the connecting portion 30, and is arranged below the grid-like track R.
- the connecting portion 30 has a support member 31 and a connecting member 32.
- the support member 31 rotatably supports the rotation shaft of the traveling wheel 21 and the rotation shaft of the auxiliary wheel 22.
- the support member 31 holds the relative position between the traveling wheel 21 and the auxiliary wheel 22.
- the support member 31 is formed in a plate shape, for example, and has a thickness that allows it to pass through the gap D (see FIG. 1).
- the connecting member 32 extends downward from the support member 31 and is connected to the upper surface 17a of the upper unit 17 to hold the upper unit 17.
- the connecting member 32 is provided internally with a transmission mechanism for transmitting the driving force of the traveling drive unit 33, which will be described later, to the traveling wheels 21.
- This transmission mechanism may be configured to use a chain or a belt, or may be configured to use a gear train.
- the connecting member 32 is provided so as to be swivelable in the ⁇ Z direction about the swivel shaft AX2. By turning the connecting member 32 around the turning shaft AX2, the traveling wheel 21 can be turned in the ⁇ Z direction around the turning shaft AX2 via the support member 31.
- the connecting portion 30 (see FIG. 2) is provided with a traveling drive portion 33 and a direction changing mechanism 34.
- the traveling drive unit 33 is attached to the connecting member 32.
- the traveling drive unit 33 is a drive source for driving the traveling wheels 21, and for example, an electric motor or the like is used.
- Each of the four traveling wheels 21 is a driving wheel driven by a traveling driving unit 33.
- the four traveling wheels 21 are controlled by the control unit 50 so as to have the same or substantially the same rotation speed. If any one of the four traveling wheels 21 is not used as the driving wheel, the traveling drive unit 33 is not attached to the connecting member 32.
- the direction changing mechanism 34 turns the connecting member 32 of the connecting portion 30 around the turning shaft AX2, thereby turning the traveling wheel 21 in the ⁇ Z direction around the turning shaft AX2.
- the traveling vehicle V changes from the first state in which the traveling direction is the first direction DR1 to the second state in which the traveling direction is the second direction DR2, or the traveling direction is the second direction. It is possible to switch from the second state in which the DR2 is set to the first state in which the traveling direction is the first direction DR1.
- the direction changing mechanism 34 has a drive source 35, a pinion gear 36, and a rack 37.
- the drive source 35 is attached to a side surface of the traveling drive unit 33 away from the swivel shaft AX2.
- As the drive source 35 for example, an electric motor or the like is used.
- the pinion gear 36 is attached to the lower surface side of the drive source 35, and is rotationally driven in the ⁇ Z direction by the driving force generated by the drive source 35.
- the pinion gear 36 has a circular shape in a plan view and has a plurality of teeth in the circumferential direction of the outer circumference.
- the rack 37 is fixed to the upper surface 17a of the upper unit 17.
- the rack 37 is provided at each of the four corners of the upper surface 17a of the upper unit 17, and is provided in an arc shape (fan shape) centered on the turning shaft AX2 of the traveling wheel 21.
- the rack 37 has a plurality of teeth that mesh with the teeth of the pinion gear 36 in the circumferential direction of the outer circumference.
- the pinion gear 36 and the rack 37 are arranged so that their teeth are in mesh with each other.
- the pinion gear 36 rotates in the ⁇ Z direction, the pinion gear 36 moves in the circumferential direction around the swivel shaft AX2 along the outer circumference of the rack 37.
- the connecting member 32 turns, and the traveling drive unit 33 and the direction changing mechanism 34 turn together with the pinion gear 36 in the circumferential direction around the turning shaft AX2.
- each of the traveling wheel 21 and the auxiliary wheel 22 arranged at the four corners of the upper surface 17a turns around the turning shaft AX2 in the range of 90 degrees in the ⁇ Z direction.
- the drive of the direction changing mechanism 34 is controlled by the control unit 50.
- the control unit 50 may instruct the four traveling wheels 21 to perform the turning operations at the same timing, or may instruct them to perform the turning operations at different timings.
- the traveling wheel 21 shifts from the state of being in contact with one of the first track R1 and the second track R2 to the state of being in contact with the other.
- the direction of the rotation axis of the traveling wheel 21 shifts from one of the first direction DR1 and the second direction DR2 to the other. Therefore, it is possible to switch between the first state in which the traveling direction of the traveling vehicle V is the first direction DR1 (X direction) and the second state in which the traveling direction is the second direction DR2 (Y direction).
- the traveling vehicle V includes a position detection unit 38 that detects position information (see FIG. 4).
- the position detection unit 38 detects the current position of the traveling vehicle V by detecting a position marker (not shown) indicating the position information.
- the position detection unit 38 detects the position marker by non-contact.
- the position marker is installed for each grid cell C of the grid-like trajectory R.
- the traveling vehicle V is provided with a charging electrode 39.
- the traveling vehicle V charges the battery (not shown) of the traveling vehicle V by connecting the charging electrode 39 to the charging terminal 40 (see FIG. 1) provided in the traveling vehicle system SYS.
- the charging terminal 40 is arranged in a predetermined grid cell C.
- the charging terminal 40 is connected to a power source (not shown) to supply electric power to the battery of the traveling vehicle V.
- the charging terminal 40 is supported by the frame 41 and moves in the vertical direction.
- the frame 41 is fixed to one or both of the first track R1 and the second track R2. By moving in the vertical direction, the charging terminal 40 moves to a retracted position that does not interfere with the moving space of the traveling wheel 21, which will be described later, and a charging position that is connected to the charging electrode 39 of the traveling vehicle V.
- the traveling vehicle V transmits an occupancy request of the grid cell C in which the charging terminal 40 is arranged to the blocking controller BC. After obtaining the permission of the occupancy request, the traveling vehicle V stops at the grid cell C in which the charging terminal 40 is arranged.
- the control unit (not shown) of the charging terminal 40 receives information indicating that the traveling vehicle V has stopped from the host controller HC, and moves the charging terminal 40 from the retracted position to the charging position. ..
- the charging terminal 40 is connected to the charging electrode 39 of the traveling vehicle V, and the traveling vehicle V is charged.
- the control unit of the charging terminal 40 receives the information indicating that the charging is completed from the traveling vehicle V, and moves the charging terminal 40 from the charging position to the retracted position.
- the configuration for charging the traveling vehicle V is not limited to the above configuration.
- a mechanism for charging the traveling vehicle V by non-contact power supply may be used, or the frame 41 may be suspended from the ceiling.
- the control unit of the charging terminal 40 may be configured to wirelessly acquire a signal indicating that the vehicle has reached the grid cell C from the traveling vehicle V, or the traveling vehicle V may be obtained from the detection result by the sensor arranged in the grid cell C. May be configured to acquire that has reached grid cell C.
- the control unit 50 comprehensively controls the traveling vehicle V.
- the control unit 50 stores (stores) various data, a storage unit 51, a communication unit 52, a travel control unit 53, a transfer control unit 54, a charge control unit 55, an occupancy request unit 56, and a release request.
- a unit 57 and a state information processing unit 58 are provided.
- the control unit 50 is a computer. Although the control unit 50 is provided in the main body 10 in the present embodiment (see FIG. 3), the control unit 50 may be provided outside the main body 10.
- the communication unit 52 communicates with an external device.
- the communication unit 52 is wirelessly connected to a communication system (not shown).
- the communication unit 52 communicates with each of the host controller HC and the blocking controller BC via the communication system.
- the travel control unit 53 controls the travel of the traveling vehicle V.
- the travel control unit 53 controls travel by controlling the travel drive unit 33, the direction change mechanism 34, and the like.
- the travel control unit 53 controls, for example, travel speed, operation related to stopping, and operation related to direction change.
- the travel control unit 53 controls the travel of the traveling vehicle V based on the transport command CM1 described later.
- the travel control unit 53 controls the travel so that the traveling vehicle V travels according to the occupancy permission for the blocking section B given by the blocking controller BC.
- the occupancy permission received from the blocking controller BC is stored in the storage unit 51 as the occupancy permission information T1.
- the occupancy permission information T1 includes information indicating the blocking section B for which the occupancy permission has been granted. For example, when the occupancy of the blocking sections B43 to B49 is permitted, the occupancy permission information T1 is expressed as blocking sections B43 to B49: permission.
- the possession permission information T1 is updated to the latest information based on the response information T6 described later.
- the travel control unit 53 controls the travel of the traveling vehicle V based on the occupancy permission information T1.
- the travel control unit 53 controls the traveling of the traveling vehicle V so as to enter the blocking section B to which the occupancy permission is given and not to enter the blocking section B to which the occupancy permission is not given.
- the traveling control unit 53 waits in front of the blocking section B for which the occupancy permission is not given and prevents the traveling vehicle V from entering the blocking section B. Control driving.
- the transfer control unit 54 controls the transfer operation by the traveling vehicle V based on the transport command CM1.
- the transfer control unit 54 controls the transfer operation by the traveling vehicle V by controlling the transfer device 18 and the like.
- the transfer control unit 54 controls the operation of gripping the article M arranged at a predetermined place and the operation of unloading the held article M to a predetermined place.
- the charge control unit 55 controls operations related to charging.
- the charge control unit 55 starts the charge operation when the amount of electricity stored in the battery becomes equal to or less than a predetermined value.
- the charge control unit 55 controls the traveling vehicle V so as to travel to the grid cell C in which the charging terminal 40 is arranged and charge the vehicle.
- the charge control unit 55 causes the blocking controller BC to request the blocking controller BC to occupy the blocking section B necessary for traveling to the grid cell C where the charging terminal 40 is arranged and performing charging via the occupancy request unit 56.
- the state information processing unit 58 periodically generates and updates state information (not shown).
- the state information is stored in the storage unit 51.
- the state information processing unit 58 transmits the state information to the host controller HC and the blocking controller BC via the communication unit 52.
- the state information includes, for example, information on the current position of the traveling vehicle V, information indicating the current state of the traveling vehicle V such as normal or abnormal, and an execution state (execution, execution) by the traveling vehicle V of various commands such as the transport command CM1. Information about completion, execution failure).
- the occupancy request unit 56 requests occupancy permission for a plurality of blocking sections B to be occupied by itself.
- the occupancy request unit 56 will be described later.
- the release request unit 57 requests the blocking controller BC to release the occupancy of the blocking section B for which the occupancy permission has been given.
- the release request unit 57 will be described later.
- FIG. 5 is a sequence diagram showing an example of the operation of the traveling vehicle system SYS.
- FIG. 6 is a diagram showing an example of control regarding the transfer of the traveling vehicle V by the traveling vehicle system SYS.
- the grid-like orbit R shown in FIG. 6 and the like shows a part of the whole grid-like orbit R. Further, in the drawings of FIG. 6 and the like, it is assumed that the grid cells C and the blocking section B of the portions indicated by the numbers “1 to 60” are the grid cells C1 to C60 and the blocking sections B1 to B60, respectively.
- the host controller HC controls the transport (running) of the traveling vehicle V by allocating the transport command CM1 (step S1 in FIG. 5).
- the host controller HC selects a traveling vehicle V that can be transported based on the system information, and assigns the transport command CM1 to the selected traveling vehicle V.
- the transport command CM1 is, for example, a command for delivering the article M to the traveling vehicle V at a predetermined position (a load grasping command for executing the loading of the article M arranged at the predetermined position for the traveling vehicle V, traveling. This is an unloading command for executing the unloading of the article M to be held by the vehicle V to a predetermined position).
- the transport command CM1 includes information regarding the transfer position Pt indicating the position where the article M is transferred to the traveling vehicle V.
- the transfer position Pt is a position of each traveling vehicle V, a position of each part related to the traveling vehicle system SYS (eg, a processing device, a storage device, a load port, a mounting part of the article M in the buffer), for example, a coordinate value.
- the system information includes state information of each traveling vehicle V, map information indicating the position of each part (eg, processing device, storage device, buffer) related to the traveling vehicle system SYS, position information of the article M, and the like.
- the host controller HC updates the system information by communicating with each of the traveling vehicle V (V1 to Vn) and the blocking controller BC.
- the host controller HC is moved along the traveling path shown as the alternate long and short dash line from the grid cells C42 to C49 as the transport command CM1, and is provided below the grid cell C49.
- a command to transfer the article M to the position of is transmitted to the traveling vehicle V.
- the transport command CM1 causes the traveling vehicle V to execute a traveling operation of traveling until the traveling vehicle V stops at a predetermined stop position immediately before the transferring operation of the article M to the transfer destination, and then causes the traveling vehicle V to travel from the stop position. It is a command to execute the transfer operation of moving the article M to the execution position of the transfer and transferring the article M to the predetermined position.
- the above stop position is determined in the grid cell C adjacent to the grid cell C that executes the transfer operation.
- the traveling vehicle V has a grid cell C48 adjacent to the grid cell C49, which is the transfer destination, as a stop position, and the traveling vehicle V travels from the grid cells C42 to C48.
- the traveling operation of stopping is executed, and then the transfer operation of moving from the grid cell C48 to a predetermined position for executing the transfer in the grid cell C49 is executed.
- the predetermined stop position may be set in the blocking section B for executing the transfer operation.
- the traveling vehicle V executes a traveling operation in which the grid cell C49 for executing the transfer operation is determined as a stop position and the traveling vehicle V travels from the grid cells C42 to C49 to stop. Then, the transfer operation of moving to a predetermined position to execute the transfer in the grid cell C49 and transferring is executed.
- the predetermined stop position is a blocking section B for executing the transfer operation or a blocking section adjacent to the blocking section B for executing the transfer operation
- the execution position of the transfer operation or the execution position of the transfer operation Since the traveling vehicle V can be driven to a position close to the above, the blocking section B occupied for the transfer operation can be shortened.
- the traveling vehicle V stores the command from the host controller HC including the received transport command CM1 as command information T3 in the storage unit 51.
- the traveling vehicle V requests the blocking controller BC to permit the blocking controller BC to occupy a plurality of blocking sections B to be occupied by itself defined by the transport command CM1.
- the occupancy request unit 56 generates an occupancy request (occupancy permission request) for requesting the blocking controller BC to occupy the blocking section B (step S2 in FIG. 5).
- the occupancy request unit 56 is included in a series of operations to be executed by the own traveling vehicle V (abbreviated as “self”), after the self starts traveling and before the execution of a predetermined operation included in the series of operations.
- the blocking controller BC is requested to have permission to occupy the blocking section B that the traveling vehicle V should occupy in order to execute the operation, with a break until the vehicle stops.
- the blocking section B for traveling until the vehicle stops at the position where the predetermined operation is performed and the blocking section B for traveling after the predetermined operation are occupied at one time as compared with the configuration in which the exclusive control is collectively executed.
- the blocking section B to be performed can be reduced.
- the load of the controller can be distributed as compared with the configuration in which the controller side divides the occupancy request by the above division.
- the above-mentioned predetermined operation is not particularly limited.
- the predetermined operation is, for example, a transfer operation (loading operation, unloading operation), a direction changing operation, and a charging operation.
- the above-mentioned predetermined operation requires more time than the traveling operation.
- the grid cell C to be executed is fixed, but the traveling operation is a traveling operation such as selecting another route. It is also possible to change the grid cell C that executes.
- the start point and the end point of the grid cell C can be specified in the traveling operation, the start point and the end point cannot be specified in the above-mentioned predetermined operation. Therefore, in the case of the configuration of the occupancy request unit 56 described above, the occupancy permission for the blocking section B until the stop is performed before the execution of the predetermined operation in which the route can be changed, the execution position of the operation is fixed, and the operation takes time. Since the occupancy permission is requested separately from the occupancy permission for the blocking section B that requires the above, the blocking section B for traveling until the vehicle stops at the position where the predetermined operation is performed and the blocking section B for traveling after the predetermined operation. As compared with the configuration in which the exclusive control is collectively executed, it is possible to effectively suppress the hindrance of the traveling vehicle V due to the occupancy of the blocking section B required for the series of operations.
- the delimiter until the stop immediately before the execution of the predetermined operation is the operation of traveling until the unit stops at the predetermined stop position (grid cell C48). ..
- the occupancy request unit 56 transfers the travel occupancy request RQ1 (first occupancy permission request), which is an occupancy request for the blocking section B to be occupied in order to execute the travel operation, and the transfer.
- a transfer occupancy request RQ2 (second occupancy permission request), which is an occupancy request for the blocking section B to be occupied in order to execute the operation, is generated as a separate request and requested to the blocking controller BC.
- the traveling vehicle V transmits the traveling occupancy request RQ1 to the blocking controller BC, and then transmits the transfer occupancy request RQ2 to the blocking controller BC.
- a predetermined stop position The blocking section B occupied at one time can be shortened as compared with the configuration in which exclusive control is collectively executed for the blocking section B for traveling until the vehicle stops and the blocking section B for executing the transfer operation. Further, in the case of this configuration, since the traveling vehicle V transmits the first and second occupancy permission requests, the load on the controller can be distributed.
- FIG. 7 is a diagram showing an example of the travel occupancy request RQ1.
- the travel occupancy request RQ1 includes traveling vehicle information D1, request section D2, request type D3, operation D4, and time D5.
- the traveling vehicle information D1 is identification information of the traveling vehicle V.
- the request section D2 is information indicating a blocking section B for requesting possession permission.
- the required section D2 indicates a plurality of continuous blocking sections B
- the requested section D2 is represented by blocking sections B arranged at both ends of the section, and should be occupied after the blocking section B to be occupied by the traveling vehicle V first. It is expressed so as to indicate the order of the blocking section B. In this case, the amount of data can be reduced as compared with the configuration in which a plurality of continuous blocking sections B are shown one by one.
- the request type D3 is information indicating the type of request for the blocking section B, and is information indicating that it is an occupancy request.
- the operation D4 is information indicating the type of operation to be performed in the blocking section B requesting the occupancy permission, and in the case of the traveling occupancy request RQ1, it is information indicating the traveling operation.
- the time D5 is the time when the generation of the occupancy request is completed.
- the occupancy request unit 56 collectively generates one occupancy request to the controller by one communication for a plurality of consecutive blocking sections B as one piece of information.
- the number of communications between the blocking controller BC and the traveling vehicle V can be reduced as compared with the configuration in which the occupancy request RQA is required to be transmitted individually for each blocking section B.
- the number of the plurality of continuous blocking sections B is determined based on the speed of the traveling vehicle V and one or both of the communication cycles between the traveling vehicle V and the blocking controller BC.
- the number of the plurality of consecutive blocking sections B is limited to the number of blocking sections B in which the traveling vehicle V can travel during one communication cycle between the traveling vehicle V and the blocking controller BC. Is set as.
- the number of the plurality of consecutive blocking sections B in which the traveling vehicle V requests the blocking controller BC for occupancy permission is the number of the traveling vehicle V during one communication cycle between the traveling vehicle V and the blocking controller BC. It is set not to request the blocking controller BC to permit the occupancy of the blocking section B at a position where the vehicle cannot travel.
- the traveling vehicle V It is possible to suppress giving the traveling vehicle V permission to occupy the blocking section B at a position where the traveling vehicle V cannot travel when the speed or the communication cycle of the vehicle V cannot travel.
- the number of the plurality of consecutive blocking sections B described above is set up to the number of blocking sections B in which the traveling vehicle V can travel when the speed or communication cycle of the traveling vehicle V is taken into consideration.
- the communication cycle is T1 shown in FIG. 20, which will be described later.
- the occupancy request unit 56 is not limited to a configuration in which an occupancy request is generated by combining a plurality of continuous blocking sections B into one piece of information.
- the occupancy request unit 56 blocks the occupancy request RQA having one blocking section B to be occupied.
- the occupancy request unit 56 may be configured to transmit an occupancy request RQA including one blocking section B to be occupied to the blocking controller BC.
- the travel occupancy request RQ1 related to the transport command CM1 shown in FIG. 6 is represented as traveling vehicle information D1: V, request section D2: B42-B48, request type D3: occupancy, operation D4: travel (see FIG. 7). ).
- the travel occupancy request RQ1 is not limited to the above example, and may be composed of information other than the above information.
- the transfer occupancy request RQ2 includes the traveling vehicle information D1, the request section D2, the request type D3, the operation D4, and the time D5, similarly to the travel occupancy request RQ1.
- the operation D4 is information indicating the transfer operation.
- the vehicle body and the side-out mechanism 11 of the traveling vehicle V may straddle the regions of a plurality of grid cells C in a plan view depending on the transfer position of the article M.
- the blocking section B that needs to be occupied in order to execute the transfer operation is B49, B49 and B50, and B49, B50, and B59. , B60.
- the blocking section B which needs to be occupied in order to execute the transfer operation, is obtained by the occupancy request unit 56 based on the information on the transfer position of the article M in the transport command CM1.
- the transfer occupancy request RQ2 for the transfer operation is the traveling vehicle information D1: V, the request section D2: B49, and the request type. It is expressed as D3: occupancy, operation D4: transfer (see FIG. 8 (A)).
- the transfer occupancy request RQ2 is represented as request sections D2: B49 and B50 (FIG. 8 (B). )reference).
- the transfer occupancy request RQ2 is the request section D2: B49, B50, B59, B60. , (See FIG. 8C).
- the transfer occupancy request RQ2 is not limited to the above example, and may be composed of information other than the above information.
- FIG. 9 is a diagram showing an example of control regarding the transfer of the traveling vehicle V by the traveling vehicle system SYS.
- the host controller HC is moved along the traveling path shown as the alternate long and short dash line from the grid cells C42 to C19 as the transport command CM1, and the article is placed at a predetermined position below the grid cell C19.
- An example is shown in the case where a command to transfer M is transmitted to the traveling vehicle V.
- the transport command CM2 shown in FIG. 9 causes the traveling vehicle V to travel from grid cells C42 to C49, changes direction in grid cell C49 in the direction of grid cell C39, travels from grid cells C49 to C29, and grid cell C29. Is a command to move to a predetermined position to execute the transfer in the grid cell C19 and execute the transfer.
- the predetermined operations executed by the traveling vehicle V are the direction change operation and the transfer operation.
- the delimiter until the stop before the execution of the direction changing operation is the traveling operation and the direction changing operation from the grid cells C42 to C49.
- the delimiter until the transfer operation is stopped before the execution is the operation of traveling until the vehicle stops at the predetermined position (C29).
- the occupancy request unit 56 detects a predetermined operation (direction change operation, transfer operation, charging operation) related to the transport command CM2, and generates an occupancy request based on the detection result. When there are a plurality of the predetermined operations, the occupancy request unit 56 generates an occupancy request for each of the predetermined operations until the operation is stopped before the operation is executed.
- a predetermined operation direction change operation, transfer operation, charging operation
- the occupancy request unit 56 should occupy the blocking section B to be occupied in order to travel until it stops at the position where the direction is changed (third occupancy permission request) and the occupancy request unit 56 to travel after the direction change.
- the occupancy request (fourth occupancy permission request) for the blocking section B is transmitted to the blocking controller BC as a separate request.
- the traveling vehicle V transmits the third occupancy permission request to the blocking controller BC, and then transmits the fourth occupancy permission request to the blocking controller BC.
- the blocking section B for traveling until the vehicle stops at the position where the direction is changed and the vehicle travels after the direction change.
- the blocking section B occupied at one time can be shortened as compared with the configuration in which exclusive control is collectively executed for the blocking section B of. Further, in the case of this configuration, since the traveling vehicle V transmits the third and fourth occupancy permission requests, the load on the controller can be distributed.
- the occupancy request unit 56 is a travel occupancy request RQ3 (third occupancy) which is an occupancy request for the blocking section B to be occupied in order to execute the travel operation before the execution of the direction change operation.
- Permission request travel occupancy request RQ4 (first occupancy permission request, fourth occupancy permission request), which is an occupancy request for the blocking section B to be occupied in order to execute the traveling operation before the transfer operation is executed.
- the transfer occupancy request RQ5 (second occupancy permission request), which is an occupancy request for the blocking section B to be occupied in order to execute the transfer operation, is generated as a separate request and requested to the blocking controller BC.
- FIG. 10 is a diagram showing an example of an occupancy request.
- the travel occupancy request RQ3 is represented as traveling vehicle information D1: V, request section D2: B42-B49, request type D3: occupancy, operation D4: travel, and direction change. ..
- the traveling occupancy request RQ4 is expressed as traveling vehicle information D1: V, required section D2: B39-B29, request type D3: occupying, and operation D4: traveling.
- the transfer occupancy request RQ5 is expressed as traveling vehicle information D1: V, request type D3: occupancy, operation D4: traveling, and the request section D2 is required to occupy in order to execute the transfer operation as described above. It is an occupancy request for the blocking section B.
- FIG. 11 is a diagram showing an example of operation during charging of the traveling vehicle V.
- FIG. 12 is a diagram showing an example of an occupancy request regarding charging.
- the traveling vehicle V travels from the grid cell C42 to the grid cell C49 to charge in the grid cell C49, and after charging is completed, It is assumed that the grid cells C49 to C19 are planned to be changed.
- the traveling vehicle V may be charged.
- the traveling vehicle V requests the blocking controller BC to allow the blocking section B to be occupied, which is necessary for the charging operation.
- the occupancy request unit 56 includes an occupancy request RQA (fifth occupancy permission request) for the blocking section B to be occupied in order to travel until the vehicle stops at the charging position, and a blocking to be occupied in order to travel after charging.
- the occupancy request RQA (sixth occupancy permission request) for the section B is generated as a separate request and transmitted to the blocking controller BC.
- the traveling vehicle V transmits the fifth occupancy permission request to the blocking controller BC, and then transmits the sixth occupancy permission request to the blocking controller BC.
- the occupancy request RQA (fifth occupancy permission request) for the blocking section B to be occupied in order to run until the traveling vehicle V stops at the charging position, and the blocking section B to be occupied to run after charging.
- an occupancy request RQA (sixth occupancy permission request) is generated as a separate request and transmitted to the blocking controller BC
- the blocking section B occupied at one time can be shortened as compared with the configuration in which exclusive control is collectively executed for the blocking section B for the purpose. Further, in the case of this configuration, since the traveling vehicle V transmits the fifth and sixth occupancy permission requests, the load on the controller can be distributed.
- the occupancy request unit 56 is a travel occupancy request RQ6 (fifth occupancy permission request) which is an occupancy request for the blocking section B to be occupied in order to execute the travel operation before the execution of the charging operation.
- the running occupancy request RQ7 (sixth occupancy permission request), which is the occupancy request RQA for the blocking section B to be occupied in order to execute the running operation after the charging operation, are generated as separate requests and blocked. Request to controller BC.
- the predetermined operation is the charging operation, and the delimiter until the stop before the execution of the predetermined operation is the traveling operation to the chargeable grid cell C.
- the traveling occupancy request RQ6 is represented as traveling vehicle information D1: V, request section D2: B42-B49, request type D3: occupancy, operation D4: traveling, charging (FIG. 12). reference).
- the traveling occupancy request RQ7 is expressed as traveling vehicle information D1: V, required section D2: B39-B19, request type D3: occupancy, and operation D4: traveling.
- the traveling vehicle V executes the operation after the self starts traveling until the traveling vehicle V stops before executing the predetermined operation included in the series of operations. Separately generate an occupancy permit for the blocking section B to be occupied by.
- the above-mentioned occupancy request RQA separately generated by the occupancy request unit 56 is transmitted to the blocking controller BC by the communication unit 52 in step S4 of FIG.
- the occupancy request RQA is transmitted to the blocking controller BC by periodic communication.
- Step S4 is executed as a response to a transmission request from the blocking controller BC. Periodic communication will be described later.
- the timing of transmitting each of the above-mentioned occupancy request RQA is the occupancy request RQA relating to the traveling occupancy request divided from the start of the traveling vehicle V to the stop before the execution of the predetermined operation included in the series of operations.
- the occupancy request RQA (transfer occupancy request, turn occupancy request, charge occupancy request) regarding the blocking section B required to execute a predetermined operation is transmitted.
- the controller side since the occupancy request RQA regarding the traveling occupancy request and the occupancy request RQA regarding the execution of the predetermined operation are transmitted separately on the traveling vehicle V side, the controller side performs the above processing for each traveling vehicle V. In comparison, the load on the controller can be reduced.
- the traveling vehicle V requests the blocking controller BC to release the occupancy permission for the blocking section B to which the occupancy permission is given.
- Completion of the above operation is, for example, withdrawal from the blocking section B.
- the completion of the above operation is when the traveling vehicle V leaves the blocking section B after the direction changing operation or the charging operation is completed.
- the departure from the blocking section B can be detected in the traveling vehicle V based on the map information T2 and the current position information.
- the completion of the above operation is detected for each blocking section B for which the operation has been completed, out of the plurality of blocking sections B for which the possession permission has been granted.
- the request to release the occupancy permission is made by the release request unit 57 generating a release request RQB requesting the release of the occupancy permission (step S11) and transmitting the release request RQB to the blocking controller BC (step S13).
- the release request RQB is information that requests the blocking controller BC to release the occupancy permission for one or a plurality of blocking sections B for which the occupancy permission has been given as one piece of information by one communication.
- the release request unit 57 detects the blocking section B for which the operation has been completed, the release request unit 57 generates a release request RQB for requesting the release of the possession permission for the blocking section B for which the operation has been completed.
- the release request unit 57 detects the completion of the operation in units of one of the blocking sections B, and generates a release request RQB for the blocking section B for which the above operation has been completed.
- the release request unit 57 generates a release request RQB for the blocking section B whose operation is completed for each communication cycle.
- the release request RQB is represented by replacing the request type D3 in the above-mentioned occupancy request RQA from the occupancy permission request to the release request.
- FIG. 13 is a diagram showing an example of the operation related to the release request RQB in the traveling vehicle system SYS.
- FIG. 13 shows a state in which the traveling vehicle V travels from the blocking sections B43 to B45 after being given permission to occupy the blocking sections B43 to B49.
- the release request unit 57 generates a release request RQB requesting the release of the occupancy permission for the blocking sections B43 to B44 that have completed the operation in the blocking sections B43 to B49 to which the occupancy permission is given. To do. At this time, the release request unit 57 detects the blocking section B43 that has completed the above operation and generates a release request for requesting the release of the occupancy permission of the blocking section B43. Subsequently, the release requesting unit 57 detects the blocking section B44 that has completed the operation, and requests the blocking controller BC for one piece of information for the blocking sections B43 to B44 that request the release of the occupancy permission. Generate a summary release request RQB.
- the release request RQB in this case is expressed as the traveling vehicle information D1: V, the request section D2: B43 to B44, the request type D3: the occupancy release request, the operation D4: traveling, and the time D5: the time when the release request RQB is generated.
- D1 traveling vehicle information
- the request section D2 B43 to B44
- the request type D3 the occupancy release request
- the operation D4 traveling
- the time D5 the time when the release request RQB is generated.
- the traveling vehicle V in the blocking section B is generated. Since the occupancy permission is promptly released, another traveling vehicle V can quickly obtain the occupancy permission of the blocking section B.
- the release request RQB generated by the release request unit 57 is transmitted to the blocking controller BC by the communication unit 52 in one communication in step S13 of FIG.
- the release request RQB is transmitted to the blocking controller BC as a response to the transmission request (step S12) from the blocking controller BC by periodic communication described later. If both the occupancy request RQA and the release request RQB to be transmitted to the blocking controller BC exist, these may be combined into one piece of information and transmitted by one communication.
- the blocking controller BC determines whether or not to grant the occupancy permission for one or a plurality of blocking sections B for which the occupancy permission is requested by the traveling vehicle V, and occupies the one or a plurality of blocking sections B determined to be permitted. Give permission to vehicle V.
- the blocking controller BC includes a storage unit 61 that stores (stores) various data, a communication unit 62, an occupancy request processing unit 63, an occupancy request determination unit 64, a release request processing unit 65, and a release request determination unit 66. , And a response unit 67 (see FIG. 4).
- the blocking controller BC is a computer.
- the storage unit 61 stores (stores), for example, request management information T4, occupancy management information T5, and the like.
- the communication unit 62 communicates with an external device.
- the communication unit 62 is wirelessly connected to the communication system.
- the communication unit 62 communicates with the plurality of traveling vehicles V and the host controller HC via the communication system.
- the occupancy request processing unit 63 performs processing related to the occupancy request RQA.
- the occupancy request processing unit 63 records (adds) the occupancy request RQA in the request management information T4 every time the occupancy request RQA is received from the traveling vehicle V.
- the occupancy request processing unit 63 records (adds) the determination result in the request management information T4 each time a determination is made for the occupancy request RQA.
- the cancellation request processing unit 65 performs processing related to the cancellation request RQB.
- the release request processing unit 65 records (adds) the release request RQB in the request management information T4 each time the release request RQB is received.
- the release request processing unit 65 records (adds) the determination result in the request management information T4 each time a determination is made for the release request RQB.
- FIG. 14 is a diagram showing an example of the requirement management information T4.
- the request management information T4 is information for managing the occupancy request RQA and the cancellation request RQB.
- the request management information T4 is table data in which the received occupancy request RQA or cancellation request RQB is associated with information regarding a determination (response) to the occupancy request RQA or cancellation request RQB.
- the request management information T4 includes, for example, traveling vehicle information D1, request section D2, request type D3, operation D4, time D5, section D6, response type D7, operation D8, and time D9.
- the traveling vehicle information D1, the request section D2, the request type D3, the operation D4, and the time D5 are information related to the above-mentioned occupancy request RQA or release request RQB, respectively.
- the section D6, the response type D7, the operation D8, and the time D9 are information regarding the determination content (response content) for the occupancy request RQA or the cancellation request RQB, respectively.
- the section D6, the response type D7, and the operation D8 are information indicating the result of permission or disapproval given by the blocking controller BC for the request section D2, the request type D3, and the operation D4, respectively.
- the time D9 is information indicating the time when the blocking controller BC has given the occupancy permission or the release permission.
- the requirement management information T4 is not limited to the above example, and may be composed of information other than the above information, for example.
- the blocking controller BC executes exclusive control for the occupancy request RQA based on a predetermined rule (exclusive control rule) set in advance.
- exclusive control rule An example of the exclusive control rule will be described below.
- the following exclusive control rule is an example and may have other configurations.
- the blocking controller BC executes exclusive control for a travel occupancy request that divides the period from when the traveling vehicle V starts traveling to when it stops before executing a predetermined operation included in the series of operations. After that, exclusive control is executed for the occupancy permission (transfer occupancy permission, turn occupancy permission, charge occupancy permission) for the blocking section B required to execute a predetermined operation.
- the blocking controller BC travels until it stops at a predetermined stop position immediately before the transfer operation of the article M with respect to the transfer destination of the traveling vehicle V in a series of operations to be executed by the traveling vehicle V.
- exclusive control for the blocking section B to be occupied travel occupancy request, first occupancy permission request
- the blocking section B to be occupied for the transfer operation by the traveling vehicle V transfer occupancy
- Exclusive control of request, second occupancy permission request is executed.
- the blocking section B for traveling until the vehicle stops at a predetermined stop position and the blocking section B for executing the transfer operation are temporarily occupied as compared with the configuration in which exclusive control is collectively executed.
- the blocking section B can be shortened.
- the blocking controller BC refers to a blocking section B to be occupied in order to travel until the traveling vehicle V stops at a position where the traveling vehicle V changes direction in a series of operations to be executed (traveling). After executing the exclusive control of the occupancy request and the third occupancy permission request), the exclusive control of the blocking section B (travel occupancy request and the fourth occupancy permission request) to be occupied in order for the traveling vehicle V to travel after changing the direction is performed. Run. In the case of this configuration, the blocking section B for traveling until the vehicle stops at the position where the direction is changed and the blocking section B for traveling after the direction change are occupied at one time as compared with the configuration in which exclusive control is collectively executed. The blocking section B can be shortened.
- the blocking controller BC refers to a blocking section B that should be occupied in order to travel until the traveling vehicle V stops at a position where the traveling vehicle V is charged in a series of operations to be executed (traveling occupation).
- the exclusive control of the blocking section B (travel occupancy request, fifth occupancy permission request) to be occupied in order for the traveling vehicle V to travel after charging is executed. ..
- the blocking section occupied at one time is compared with the configuration in which exclusive control is collectively executed for the blocking section B for traveling until the vehicle stops at the charging position and the blocking section B for traveling after charging. B can be shortened.
- Exclusive control of the occupancy request RQA by the blocking controller BC is performed by the determination that the occupancy request RQA is permitted.
- FIG. 15 is a flowchart showing an example of determination of an occupancy request regarding traveling.
- the occupancy request determination unit 64 determines whether or not to allow the occupancy request RQA (step S6 in FIG. 5).
- the occupancy request determination unit 64 determines the occupancy request RQA according to a predetermined rule (determination rule) set in advance.
- a predetermined rule determination rule
- An example of the judgment rule will be described below.
- the following determination rule is an example and may have other configurations.
- the judgment rule determines that when the blocking section B to be judged does not give the occupancy permission to the blocking section B to be judged when the other traveling vehicle V is given the occupancy permission, the blocking section B to be judged is determined. Is a rule that the occupancy permission is given to the blocking section B to be determined when the other traveling vehicle V is not given the occupancy permission.
- the determination rule determines that when a plurality of traveling vehicles V request occupancy permission for the blocking section B, the traveling vehicle V that has previously requested the occupancy permission is given the occupancy permission for the blocking section B. , It is a rule to determine that the traveling vehicle V that later requests the occupancy permission is not given the occupancy permission for the blocking section B. In this configuration, it is possible to prevent the traveling vehicle V for which the occupancy permission is requested first from being hindered by the traveling vehicle V for which the occupancy permission is requested later.
- the judgment rule is set based on the above exclusive control rule.
- a determination rule allows, for example, a travel occupancy request for a period from the start of travel of the traveling vehicle V to the stop before the execution of the predetermined operation included in the series of operations, and then the predetermined operation.
- the occupancy permission (transfer occupancy permission, turn occupancy permission, charge occupancy permission) for the blocking section B required to execute the above is permitted.
- the occupancy request determination unit 64 is the side (operation start point) to be occupied first based on the traveling direction of the traveling vehicle V among the plurality of blocking sections B for which the traveling vehicle V has requested the occupancy permission by the occupancy request RQA.
- One or more blocking sections B that can be continuously permitted are determined from (the side closer to) (steps S6A to 6C in FIG. 15). In the case of this configuration, since one or a plurality of permitted blocking sections B are determined, it is compared with a configuration in which the occupancy permission is not given unless all the sections of the plurality of blocking sections B requested by the blocking controller BC can be permitted. Therefore, the occupancy permission of the appropriate blocking section B can be promptly given to the traveling vehicle V.
- the occupancy request determination unit 64 determines whether or not to permit the occupancy request RQA of the blocking section B first occupied by the traveling vehicle V based on the above determination rule.
- the occupancy request determination unit 64 determines whether or not to permit the occupancy request RQA of the target blocking section B based on the request management information T4 and the occupancy management information T5. For example, when there is an occupancy request RQA for the blocking sections B42 to B48 from the traveling vehicle V as in the example shown in FIG. 7, the occupancy request determination unit 64 determines the occupancy request RQA of the blocking section B42 to be occupied first. , Determine whether to allow or not.
- FIG. 16 is a diagram showing an example of occupancy management information T5.
- the occupancy management information T5 is information for managing the presence / absence of occupancy permission in the blocking section B.
- the occupancy management information T5 is table data in which, for example, all the blocking sections B in the traveling vehicle system SYS and the occupancy permission state in each blocking section B are associated with each other.
- the occupancy management information T5 includes, for example, a blocking section D11, a traveling vehicle information D12, an operation D13, a time D14, and a controller setting D15, and is table data associated with these.
- the blocking section D11 is the identification information of the blocking section B.
- the traveling vehicle information D12 and the operation D13 are identification information about the traveling vehicle V for which the occupancy permission is given in the target blocking section B, and information indicating the permitted operation, respectively.
- the time D14 is information indicating the time when the blocking controller BC has given the occupancy permission.
- the traveling vehicle information D12, the operation D13, and the time D14 are represented as empty data (Null), for example, when there is no traveling vehicle V for which the occupancy permission is given in the target blocking section B.
- the controller setting D15 indicates information regarding the setting of the blocking controller BC.
- the controller setting D15 indicates, for example, information indicating that the blocking section B is set to be unusable when the blocking section B is set to be unusable.
- the occupancy request determination unit 64 determines that the occupancy permission is not given when the occupancy permission for the blocking section B set as unusable in the controller setting D15 is requested.
- the occupancy management information T5 is not limited to the above example, and may be composed of information other than the above information, for example.
- step S6A NO
- the occupancy permission for the blocking section B to be occupied must be given after the blocking section B determined not to give the occupancy permission. Judgment is made and the judgment is finished. The occupancy permission for the blocking section B for which the occupancy permission has not been given is re-executed later.
- step S6A determines whether or not there is an occupancy request RQA to be determined.
- step S6B NO
- step S6C the occupancy permission is granted for the blocking section B to be occupied next to the blocking section B to which the occupancy permission is given. Determine whether to give.
- the occupancy request determination unit 64 makes the same determination as in step S6A in step S6C.
- step S6C determines that the occupancy permission is given
- step S6C determines that the occupancy permission is not given
- step S6C NO
- the occupancy permission for the blocking section B to be occupied must be given after the blocking section B determined not to give the occupancy permission. Judgment is made and the judgment is finished.
- the occupancy permission for the blocking section B for which the occupancy permission has not been given is re-executed later.
- the occupancy request determination unit 64 may not have a configuration for determining one or a plurality of blocking sections B that can be continuously permitted from the side to be occupied first based on the traveling direction of the traveling vehicle V. For example, the occupancy request determination unit 64 may determine one by one for the plurality of blocking sections B included in the occupancy request RQA.
- FIG. 17 and 18 are diagrams showing an example of determination by the occupancy request determination unit 64.
- FIG. 17 shows an example in which the traveling vehicle V requests the occupancy permission of the blocking sections B43 to B48, and the occupancy permission of the other traveling vehicle V is not obtained in the blocking sections B43 to B48.
- the blocking sections B43 to B48 are NULL (empty data) indicating that the occupancy permission is not given.
- the occupancy request determination unit 64 determines in steps S6A to S6C that the occupancy permission is given to the traveling vehicle V for the blocking sections B43 to B48 based on the occupancy management information T5.
- FIG. 18 shows an example of a state in which the traveling vehicle V requests the occupancy permission of the blocking sections B43 to B49, and the traveling vehicle V2 is given the occupancy permission of the blocking sections B46 to B49.
- the occupancy management information T5 data indicating that the occupancy permission is given to the traveling vehicle V2 is recorded in the blocking sections B46 to B49.
- the blocking sections B43 to B45 are NULL (empty data) indicating that the possession permission is not given.
- the occupancy request determination unit 64 determines in steps S6A to S6C that the traveling vehicle V is granted the occupancy permission for the blocking sections B43 to B45, and determines that the occupancy permission is not given for the blocking sections B46 to B49. ..
- step S7 the blocking controller BC determines the occupancy management information T5 (traveling vehicle information D12,) for the blocking section B for which the occupancy permission is given, based on the determination result in step S6.
- the operation D13 and the time D14) are updated.
- the occupancy request processing unit 63 updates the occupancy management information T5 for the blocking section B for which the occupancy permission has been given, based on the determination result in step S6.
- step S8 the response unit 67 transmits the occupancy request RQA as the response information T6 to the traveling vehicle V that has transmitted the occupancy request RQA or the cancellation request RQB.
- FIG. 19 is a diagram showing an example of response information T6.
- the response information T6 includes, for example, traveling vehicle information D1, section D6, response type D7, operation D8, and time D9.
- the traveling vehicle information D1, the section D6, the response type D7, the operation D8, and the time D9 are the same as the information included in the requirement management information T4 shown in FIG. 14 above.
- step S9 the blocking controller BC updates the request management information T4 based on the result of the above determination.
- the occupancy request processing unit 63 records (adds) the determination result (section D6, response type D7, operation D8, time D9) for the occupancy request RQA determined in step S6 in the request management information T4 and updates it. ..
- the control unit 50 updates the occupancy permission information T1 stored in the storage unit 51 based on the response information T6.
- the traveling vehicle V can enter the blocking section B for which the possession permission has been given.
- step S11 the traveling vehicle V enters the blocking section B to which the occupancy permission is given, and executes an operation based on the transport command CM1.
- the traveling vehicle V After completing the operation in the blocking section B to which the occupancy permission is given, the traveling vehicle V generates a release request RQB for requesting the cancellation of the occupancy permission for the blocking section B to which the occupancy permission is given (step S11 in FIG. 5). ).
- the generation of the release request RQB by the traveling vehicle V is as described above.
- the traveling vehicle V transmits a release request RQB to the blocking controller BC as a response to the transmission request from the blocking controller BC (step S12 in FIG. 5) by periodic communication described later (step S13).
- the release request determination unit 66 determines whether or not to release the occupancy permission of the blocking section B based on the release request RQB according to a predetermined standard set in advance. (Step S14 in FIG. 5). The release request determination unit 66 determines one or a plurality of blocking sections B that can be released from the side to be released first, based on the traveling direction of the traveling vehicle V.
- the release request determination unit 66 determines that the traveling vehicle V has completed the operation in the blocking section B for which the occupancy permission has been given by the traveling vehicle V, for example, based on the state information of the traveling vehicle V, the blocking section B It is determined that the occupancy permission for is released, and the release permission is given. If the above confirmation cannot be confirmed, the release request determination unit 66 determines that the occupancy permission for the blocking section B is not released.
- the release request processing unit 65 updates the occupancy management information T5 for the blocking section B for which the release permission has been given, based on the determination result in step S14 (step S15).
- the release request processing unit 65 updates the occupancy management information T5 for the blocking section B for which the occupancy permission has been released to NULL (empty data) indicating that the occupancy permission has not been given.
- the release request processing unit 65 records (adds) the determination result (section D6, response type D7, operation D8, time D9) for the release request RQB determined in step S14 in the request management information T4 and updates it. (Step S16).
- step S17 the response unit 67 transmits the determination result of the release request RQB as the response information T6 to the traveling vehicle V that has transmitted the release request RQB.
- the traveling vehicle system SYS of the present embodiment controls the traveling vehicle V by repeating the operations of steps S1 to S17 of FIG. 5 for each traveling vehicle V in the system.
- the execution order of the processes in steps S1 to S17 is an example, and can be realized in any order as long as the output of the previous process is not used in the subsequent process. Further, a part of the processes of steps S1 to S17 may be performed in parallel.
- FIG. 20 is a diagram showing an example of the operation of the blocking controller BC.
- the blocking controller BC performs the above processing (steps S3, S5 to S9, S14 to S17) by using periodic communication.
- Periodic communication is, for example, polling communication.
- step S21 the blocking controller BC transmits to the first traveling vehicle V1 a transmission request requesting transmission of the occupancy request RQA and the release request RQB to the blocking controller BC.
- step S22 the first traveling vehicle V1 transmits the occupancy request RQA and the release request RQB to the blocking controller BC as a response to the transmission request immediately after receiving the transmission request.
- Step S22 is the same as steps S4 and S12 of FIG.
- step S21 the occupancy request RQA and the release request RQB are sent to the blocking controller BC for the next second traveling vehicle V2.
- Request transmission Send a transmission request.
- the traveling vehicle system SYS repeats steps S21 and S22, and sequentially implements the first traveling vehicles V1 to Vn.
- the occupancy request RQA and the release request RQB are transmitted from each of the first traveling vehicle V1 to the nth traveling vehicle Vn to the blocking controller BC.
- the blocking controller BC When the blocking controller BC receives the occupancy request RQA and the release request RQB from each of the first traveling vehicle V1 to the nth traveling vehicle Vn, in step S23, the processes of steps S5 to S7 and S14 to S17 of FIG. Do. By this operation, the blocking controller BC performs processing such as determination for the occupancy request RQA and the release request RQB transmitted from each of the first traveling vehicles V1 to Vn.
- step S24 the blocking controller BC transmits the determination results for the occupancy request RQA and the release request RQB as response information T6 to each of the first traveling vehicles V1 to Vn.
- Step S24 is the same as steps S9 and S16 of FIG.
- the first traveling vehicles V1 to Vn that have received the response information T6 are subjected to exclusive control based on the received response information T6.
- the traveling vehicle system SYS performs exclusive control by periodically repeating steps S21 to S24 in one cycle and steps S21 to S24 in cycle T.
- the traveling vehicle system SYS of the present embodiment includes a plurality of traveling vehicles V and a blocking controller BC capable of communicating with the plurality of traveling vehicles V and controlling the plurality of traveling vehicles V.
- a plurality of blocking sections B in which exclusive control is performed to prevent the other traveling vehicles from entering when occupied by any one of the plurality of traveling vehicles V are defined, and the traveling vehicle V is defined.
- the blocking controller BC starts the traveling vehicle V in a series of operations to be executed by the traveling vehicle V.
- the traveling vehicle V an occupancy permission for the blocking section B that the traveling vehicle V should occupy in order to execute the operation, with a break from the operation until the vehicle stops before the execution of the predetermined operation included in the series of operations.
- the traveling vehicle system SYS has an arbitrary configuration other than the above, and may or may not have a configuration other than the above.
- the traveling vehicle system SYS of the present embodiment includes a plurality of first tracks R1 extending along the first direction DR1 and a plurality of first tracks extending along a second direction DR2 different from the first direction DR1. It has two tracks R2, has a grid-like track R that forms a plurality of squares by a plurality of first tracks R1 and a plurality of second tracks R2, and a plurality of traveling vehicles V are along the grid-like track R.
- a blocking section B is set for each grid cell C which runs on the first track R1 or the second track R2 and is one grid in the grid-shaped track R.
- the traveling vehicle control method of the present embodiment is a traveling vehicle control method in the traveling vehicle system SYS.
- the blocking controller BC stops after the traveling vehicle V starts traveling and before the execution of a predetermined operation included in the series of operations in the series of operations to be executed by the traveling vehicle V.
- the exclusive control is executed, for example, by performing steps S4 to S11 of FIG.
- exclusive control is performed in a series of operations to be executed by the traveling vehicle V until the vehicle stops before the predetermined operation is executed. Therefore, the vehicle travels by exclusive control. While preventing interference between vehicles, it is possible to avoid obstructing the operation of other traveling vehicles by exclusive control as much as possible. It should be noted that the control method of the traveling vehicle has an arbitrary configuration other than the above, and may or may not have a configuration other than the above.
- the traveling vehicle system SYS and the control method of the present embodiment in order to prevent interference between the traveling vehicle Vs by exclusive control, for example, to detect another traveling vehicle V with respect to the existing traveling vehicle system. It can be carried out without providing a new mechanical mechanism and physical sensor such as the sensor of. Therefore, there is no failure of the mechanical mechanism and physical sensor, and no adjustment and maintenance are required.
- FIG. 21 is a diagram showing an example of the traveling vehicle system SYS2 of the second embodiment.
- the track R, the blocking section B, and the traveling vehicle V may have other configurations.
- the traveling vehicle system SYS2 of the present embodiment has different configurations of the grid-like track R, the blocking section B, and the traveling vehicle V of the traveling vehicle system SYS of the first embodiment, and other configurations are the same as those of the first embodiment. It is the same as the traveling vehicle system SYS.
- the track RA of the traveling vehicle system SYS2 is a track in which a plurality of truck-shaped (oval-shaped) orbital tracks are connected.
- the track RA is hung from the ceiling of the building.
- the orbit RA has a plurality of branching portions and merging portions.
- the blocking section BA of the traveling vehicle system SYS2 is set at an intersection which is a branching portion or a merging portion of the track RA.
- the traveling vehicle VA of the traveling vehicle system SYS2 travels along, for example, the track RA, and travels substantially directly below the track RA.
- exclusive control is performed with a break until the vehicle stops before the execution of the predetermined operation. It is possible to avoid obstructing the operation of other traveling vehicles as much as possible by exclusive control while preventing the interference of the vehicle.
- the above-mentioned configuration of the blocking controller BC is an example, and other configurations may be used.
- the blocking controller BC may have a part or all of the above-mentioned upper controller HC.
- the traveling vehicle V transmits an occupancy request included in a series of operations to the blocking controller BC, and the traveling vehicle V sets a break until the traveling vehicle V stops before executing the predetermined operation. It may be configured to give the occupancy permission for the blocking section B to be occupied in order to execute the operation.
- the host controller HC generates the occupancy request RQA generated by the traveling vehicle V described above, requests the blocking controller BC, and transmits the blocking section B for which the occupancy permission has been obtained to the traveling vehicle V for exclusive control. It may be configured to perform.
- the above-mentioned judgment rule is an example and may be another standard.
- the occupancy request determination unit 64 receives a request for occupancy permission from a plurality of traveling vehicles V for the blocking section B as a determination rule
- the occupancy request determination unit 64 has a plurality of traveling vehicles based on the priority of the plurality of traveling vehicles V. It may be determined that the traveling vehicle V having the higher priority among the Vs is given the occupancy permission for the blocking section B, and the traveling vehicle V having the lower priority is not given the occupancy permission. In the case of this configuration, it is possible to prevent the traveling vehicle V having a high priority from being hindered by the traveling vehicle V having a low priority.
- the above priority is configured so that the occupancy request determination unit 64 can refer to it.
- the above-mentioned priority may be set in advance, or may be set by any of the host controller HC, the blocking controller BC, and the traveling vehicle V based on a predetermined standard during the operation of the system.
- the occupancy request determination unit 64 when the occupancy request determination unit 64 receives a request for occupancy permission from a plurality of traveling vehicles V for the blocking section B, the occupancy request determination unit 64 between the blocking section B subject to the occupancy permission and the traveling vehicle V. Based on the route distance, it is determined that the traveling vehicle V having the short route distance to the blocking section B among the plurality of traveling vehicles V is given the occupancy permission for the blocking section B, and the traveling vehicle V having the long route distance to the blocking section B is determined. May be determined not to give possession permission to. In the case of this configuration, it is possible to prevent the traveling vehicle V having a short route distance to the blocking section B from being hindered by the traveling vehicle V having a long route distance to the blocking section B.
- steps S21 to S24 by the blocking controller BC is an example, and other methods may be used.
- the blocking controller BC does not collectively process the request transmissions of the first traveling vehicle V1 to the nth traveling vehicle Vn in step S22 in steps S23 and S24, but instead of processing the request transmissions of the first traveling vehicle V1 to the nth traveling vehicle Vn collectively.
- the processing of steps S5 to S9 or steps S14 to S17 may be performed for each request transmission.
- steps S3 to S9 or steps S14 to S17 by the blocking controller BC is an example, and other methods may be used.
- the blocking controller BC does not process the request transmission of the first traveling vehicle V1 to the nth traveling vehicle Vn by the periodic communication described with reference to FIG. 20 and the like, and the blocking controller BC does not process the request transmission of the first traveling vehicle V1 to the nth traveling vehicle Vn.
- the processing of steps S5 to S9 or steps S14 to S17 may be performed for each request transmission.
- the above-mentioned control method of the traveling vehicle system may be realized by a computer program.
- the above program in a series of operations to be executed by the traveling vehicle V, the period from the start of the traveling vehicle V to the stop before the execution of the predetermined operation included in the series of operations is set as a delimiter.
- This includes executing exclusive control to the computer by determining whether or not to give the traveling vehicle V an exclusive permission for the blocking section B to be occupied in order to execute the operation.
- this program may be recorded and provided on a computer-readable storage medium (eg, non-transitory recording medium, non-transitory tangible media), or provided by a control device that executes the above program. You may.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
Description
図1は、第1実施形態に係る走行車システムSYSの一例を示す斜視図である。図2は、図1に示す走行車システムSYSで用いられる走行車Vの斜視図である。図3は、走行車Vの一例を示す側面図である。図4は、走行車V、上位コントローラHC、及び、ブロッキングコントローラBCの一例を示すブロック図である。
第2実施形態について説明する。本実施形態において、上述の実施形態と同様の構成については、同じ符号を付してその説明を適宜省略あるいは簡略化する。また、本明細書の実施形態において説明する事項のうち、本実施形態に適用可能な構成は、適宜本実施形態でも適用する。
B、BA、B1~60…ブロッキング区間
C、C1~C60…グリッドセル
HC…上位コントローラ
BC…ブロッキングコントローラ
M…物品
R…格子状軌道、軌道
RA…軌道
V、V1~Vn…走行車
10…本体部
18…移載装置
20…走行部
30…連結部
34…方向転換機構
50…制御部
51…記憶部
52…通信部
53…走行制御部
54…移載制御部
55…充電制御部
56…占有要求部
57…解除要求部
58…状態情報処理部
61…記憶部
62…通信部
63…占有要求処理部
64…占有要求判定部
65…解除要求処理部
66…解除要求判定部
67…応答部
CM1、CM2…搬送指令
RQA…占有要求
RQB…解除要求
Claims (10)
- 複数の走行車と、前記複数の走行車と通信可能であり、前記複数の走行車を制御するコントローラと、を備え、
前記走行車の走行領域には、前記複数の走行車のうちいずれか1台により占有される場合に他の走行車を進入させない排他制御が行われるブロッキング区間が複数定められ、
前記走行車は、前記コントローラから前記ブロッキング区間の占有許可を得た場合に占有許可を得た前記ブロッキング区間を占有して動作可能であるが、前記コントローラから前記占有許可が得られない場合には占有許可を得ていない前記ブロッキング区間において動作しないように制御される走行車システムであって、
前記コントローラは、前記走行車が実行すべき一連の動作の中で、前記走行車が走行を開始してから前記一連の動作に含まれる所定の動作の実行前に停止するまでを区切りとして、前記走行車が動作を実行するために占有すべき前記ブロッキング区間についての前記占有許可を、前記走行車に与えるか否かの判定を行う、走行車システム。 - 前記コントローラは、前記走行車が実行すべき一連の動作の中で、前記走行車の移載先に対する物品の移載動作の直前に所定の停止位置に停止するまで走行するために占有すべき前記ブロッキング区間についての前記排他制御を実行した後、前記走行車による前記移載動作のために占有すべき前記ブロッキング区間についての前記排他制御を実行する、請求項1に記載の走行車システム。
- 前記走行車は、前記所定の停止位置に停止するまで走行するために占有すべき前記ブロッキング区間についての第1占有許可要求と、前記移載動作のために占有すべき前記ブロッキング区間についての第2占有許可要求とを別個の要求として前記コントローラに送信し、
前記コントローラは、前記第1占有許可要求についての前記排他制御を実行した後、前記第2占有許可要求についての前記排他制御を実行する、請求項2に記載の走行車システム。 - 前記所定の停止位置は、前記移載動作を実行する前記ブロッキング区間、又は前記移載動作を実行する前記ブロッキング区間に隣接する前記ブロッキング区間である、請求項2又は請求項3に記載の走行車システム。
- 前記コントローラは、前記走行車が実行すべき一連の動作の中で、前記走行車が方向転換を行う位置に停止するまで走行するために占有すべき前記ブロッキング区間について前記排他制御を実行した後、前記走行車が前記方向転換後に走行するために占有すべき前記ブロッキング区間についての前記排他制御を実行する、請求項1から請求項4のいずれか一項に記載の走行車システム。
- 前記走行車は、前記方向転換を行う位置に停止するまで走行するために占有すべき前記ブロッキング区間についての第3占有許可要求と、前記方向転換後に走行するために占有すべき前記ブロッキング区間についての第4占有許可要求とを、別個の要求として前記コントローラに送信し、
前記コントローラは、前記第3占有許可要求についての前記排他制御を実行した後、前記第4占有許可要求についての前記排他制御を実行する、請求項5に記載の走行車システム。 - 前記コントローラは、前記走行車が実行すべき一連の動作の中で、前記走行車が充電を行う位置に停止するまで走行するために占有すべき前記ブロッキング区間について前記排他制御を実行した後、前記走行車が前記充電後に走行するために占有すべき前記ブロッキング区間についての前記排他制御を実行する、請求項1から請求項6のいずれか一項に記載の走行車システム。
- 前記走行車は、前記充電を行う位置に停止するまで走行するために占有すべき前記ブロッキング区間についての第5占有許可要求と、前記充電後に走行するために占有すべき前記ブロッキング区間についての第6占有許可要求とを、別個の要求として前記コントローラに送信し、
前記コントローラは、前記第5占有許可要求についての前記排他制御を実行した後、前記第6占有許可要求についての前記排他制御を実行する、請求項7に記載の走行車システム。 - 第1方向に沿って延在する複数の第1軌道と、前記第1方向とは異なる第2方向に沿って延在する複数の第2軌道とを有し、前記複数の第1軌道と前記複数の第2軌道により複数のマス目を形成する格子状軌道を備え、
前記複数の走行車は、前記格子状軌道に沿って前記第1軌道又は前記第2軌道を走行し、
前記格子状軌道における1つの前記マス目であるグリッドセル毎に前記ブロッキング区間が設定される、請求項1から請求項8のいずれか一項に記載の走行車システム。 - 複数の走行車と、前記複数の走行車と通信可能であり、前記複数の走行車を制御するコントローラと、を備え、
前記走行車の走行領域には、前記複数の走行車のうちいずれか1台により占有される場合に他の走行車を進入させない排他制御が行われるブロッキング区間が複数定められ、
前記走行車は、前記コントローラから前記ブロッキング区間の占有許可を得た場合に占有許可を得た前記ブロッキング区間を占有して動作可能であるが、前記コントローラから前記占有許可が得られない場合には占有許可を得ていない前記ブロッキング区間において動作しないように制御される走行車システムにおける走行車の制御方法であって、
前記コントローラは、前記走行車が実行すべき一連の動作の中で、前記走行車が走行を開始してから前記一連の動作に含まれる所定の動作の実行前に停止するまでを区切りとして、前記走行車が動作を実行するために占有すべき前記ブロッキング区間についての前記占有許可を、前記走行車に与えるか否かの判定を行うことを含む、走行車の制御方法。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021520651A JP7226537B2 (ja) | 2019-05-22 | 2020-04-13 | 走行車システム及び走行車の制御方法 |
| CN202080036861.9A CN113841099B (zh) | 2019-05-22 | 2020-04-13 | 行驶车系统及行驶车的控制方法 |
| US17/612,762 US12466645B2 (en) | 2019-05-22 | 2020-04-13 | Traveling vehicle system and traveling vehicle control method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019095829 | 2019-05-22 | ||
| JP2019-095829 | 2019-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020235255A1 true WO2020235255A1 (ja) | 2020-11-26 |
Family
ID=73458582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2020/016302 Ceased WO2020235255A1 (ja) | 2019-05-22 | 2020-04-13 | 走行車システム及び走行車の制御方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12466645B2 (ja) |
| JP (1) | JP7226537B2 (ja) |
| CN (1) | CN113841099B (ja) |
| TW (1) | TWI831970B (ja) |
| WO (1) | WO2020235255A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022120116A3 (en) * | 2020-12-04 | 2022-07-21 | Crown Equipment Corporation | Systems and methods for managing movement of materials handling vehicles |
| JP2023160612A (ja) * | 2022-04-22 | 2023-11-02 | 村田機械株式会社 | 搬送車システム、及び搬送車制御方法 |
| WO2024070621A1 (ja) * | 2022-09-26 | 2024-04-04 | 村田機械株式会社 | 走行車システム |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4237205A1 (en) | 2020-10-29 | 2023-09-06 | Berkshire Grey Operating Company, Inc. | Systems and methods for automated packaging and processing for shipping with object pose analysis |
| CN120057518B (zh) * | 2025-04-29 | 2025-08-05 | 苏州新施诺半导体设备有限公司 | 行驶车系统 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004281622A (ja) * | 2003-03-14 | 2004-10-07 | Murata Mach Ltd | 搬送台車システム |
| WO2018037762A1 (ja) * | 2016-08-26 | 2018-03-01 | 村田機械株式会社 | 有軌道台車システム、及び有軌道台車 |
| WO2018110178A1 (ja) * | 2016-12-14 | 2018-06-21 | 村田機械株式会社 | 走行車システム |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63163608A (ja) | 1986-12-26 | 1988-07-07 | Komatsu Forklift Co Ltd | 無人車両の走行停止位置指示方法 |
| JPH11143538A (ja) | 1997-11-07 | 1999-05-28 | Murata Mach Ltd | 無人搬送車システム |
| WO2009142051A1 (ja) * | 2008-05-22 | 2009-11-26 | 村田機械株式会社 | 走行車システムと走行車システムでの走行制御方法 |
| JP5683254B2 (ja) * | 2010-12-21 | 2015-03-11 | 公益財団法人鉄道総合技術研究所 | 運転保安方法、運転保安システム及び管理装置 |
| JP5874942B2 (ja) * | 2012-05-28 | 2016-03-02 | 村田機械株式会社 | 走行車システムとカーブ区間での走行車の走行制御方法 |
| GB201409883D0 (en) * | 2014-06-03 | 2014-07-16 | Ocado Ltd | Methods, systems, and apparatus for controlling movement of transporting devices |
| EP3449434A1 (en) * | 2016-04-26 | 2019-03-06 | Ocado Innovation Limited | Robotic load handler coordination system, cell grid system and method of coordinating a robotic load handler |
| GB201716201D0 (en) * | 2017-10-04 | 2017-11-15 | Ocado Innovation Ltd | Object handling coordination system and method of relocating a transporting vessel |
| GB2570119B (en) * | 2018-01-10 | 2022-06-08 | Ocado Innovation Ltd | A controller and method for transporting devices |
| US12503304B2 (en) * | 2020-11-13 | 2025-12-23 | Murata Machinery, Ltd. | Traveling vehicle system |
| NO347700B1 (en) * | 2022-06-29 | 2024-02-26 | Autostore Tech As | Rail vehicle |
-
2020
- 2020-04-13 CN CN202080036861.9A patent/CN113841099B/zh active Active
- 2020-04-13 WO PCT/JP2020/016302 patent/WO2020235255A1/ja not_active Ceased
- 2020-04-13 US US17/612,762 patent/US12466645B2/en active Active
- 2020-04-13 JP JP2021520651A patent/JP7226537B2/ja active Active
- 2020-05-11 TW TW109115504A patent/TWI831970B/zh active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004281622A (ja) * | 2003-03-14 | 2004-10-07 | Murata Mach Ltd | 搬送台車システム |
| WO2018037762A1 (ja) * | 2016-08-26 | 2018-03-01 | 村田機械株式会社 | 有軌道台車システム、及び有軌道台車 |
| WO2018110178A1 (ja) * | 2016-12-14 | 2018-06-21 | 村田機械株式会社 | 走行車システム |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022120116A3 (en) * | 2020-12-04 | 2022-07-21 | Crown Equipment Corporation | Systems and methods for managing movement of materials handling vehicles |
| JP2023160612A (ja) * | 2022-04-22 | 2023-11-02 | 村田機械株式会社 | 搬送車システム、及び搬送車制御方法 |
| WO2024070621A1 (ja) * | 2022-09-26 | 2024-04-04 | 村田機械株式会社 | 走行車システム |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113841099B (zh) | 2024-04-26 |
| US12466645B2 (en) | 2025-11-11 |
| CN113841099A (zh) | 2021-12-24 |
| JP7226537B2 (ja) | 2023-02-21 |
| JPWO2020235255A1 (ja) | 2020-11-26 |
| US20220315330A1 (en) | 2022-10-06 |
| TW202105110A (zh) | 2021-02-01 |
| TWI831970B (zh) | 2024-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020235255A1 (ja) | 走行車システム及び走行車の制御方法 | |
| JP7205629B2 (ja) | 走行車システム、及び走行車の制御方法 | |
| JP6428953B2 (ja) | 搬送システム及び搬送方法 | |
| CN114341026B (zh) | 搬运系统及网格系统 | |
| JP6652106B2 (ja) | 物品搬送設備 | |
| JP7435605B2 (ja) | 搬送車 | |
| WO2020049872A1 (ja) | 搬送車システム | |
| WO2021220582A1 (ja) | 天井搬送車及び天井搬送システム | |
| WO2020235196A1 (ja) | 走行車システム及び走行車の制御方法 | |
| JP7501799B2 (ja) | 搬送システム |
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: 20810577 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2021520651 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 20810577 Country of ref document: EP Kind code of ref document: A1 |
|
| WWG | Wipo information: grant in national office |
Ref document number: 17612762 Country of ref document: US |