WO2019112104A1 - 물류 창고 제어 시스템 - Google Patents
물류 창고 제어 시스템 Download PDFInfo
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- WO2019112104A1 WO2019112104A1 PCT/KR2017/014639 KR2017014639W WO2019112104A1 WO 2019112104 A1 WO2019112104 A1 WO 2019112104A1 KR 2017014639 W KR2017014639 W KR 2017014639W WO 2019112104 A1 WO2019112104 A1 WO 2019112104A1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/10—Simultaneous control of position or course in three dimensions
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U10/00—Type of UAV
- B64U10/10—Rotorcrafts
- B64U10/13—Flying platforms
- B64U10/16—Flying platforms with five or more distinct rotor axes, e.g. octocopters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U2101/00—UAVs specially adapted for particular uses or applications
- B64U2101/25—UAVs specially adapted for particular uses or applications for manufacturing or servicing
Definitions
- the present invention relates to a warehouse control system, and more particularly, to a warehouse control system that can more efficiently manage a warehouse on which various products are loaded.
- logistics refers to the efficient flow of goods and services. It means that raw materials and subsidiary materials are put into the production site and used to produce and ship finished products at the factory, and to transport, Packaging, storage, and so on.
- a bar code or an RFID Radio Frequency IDentification
- the distribution information includes production information, specification information, movement information, and the like for the article.
- a bar code or an electronic tag capable of referring to distribution information is generally attached to the surface of the product or the package of the product. Therefore, in order for the manager to manage the product, it is possible to collect the distribution information by scanning the barcode or the electronic tag while traveling around the warehouse where the product is loaded, collecting the information, and managing the product.
- the drone belongs to an unmanned wireless flying object which can be controlled using a radio wave, and a driving system, a shooting system, and a communication system are mounted in the unmanned wireless flying object to perform various tasks.
- the drones were originally developed for use in military purposes, but since they are capable of various operations through easy manipulation, the use range of drones has been expanding in recent years as a role of delivering objects as well as shooting at high altitudes.
- the drone Since the drone is a publicly accessible structure, the mobility is very fre- quent in comparison with the structure that moves on the ground. Therefore, it is possible to control the user to move to a desired point without any restriction and perform a desired operation by the user. Therefore, if logistics management is carried out using a drone in a very large warehouse, there will be many advantages in terms of time and economy.
- Another object of the present invention is to provide a distribution warehouse control system capable of generating a layout map of a warehouse using a dron and operating a wireless air vehicle based on the layout map.
- Another object of the present invention is to provide a logistics warehouse control system capable of moving a wireless air vehicle to a desired position without scanning all the logistics products because a flight path of a wireless air vehicle is set according to a rack information tag.
- Another object of the present invention is to provide a warehouse control system capable of operating a wireless air vehicle in an emergency mode in a normal scan mode in preparation for an emergency situation.
- the present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.
- an information processing system including a plurality of product items each having a product information tag for providing product-related information; A plurality of shelves to which the plurality of goods are loaded and to which shelf information tags are attached to provide shelf related information; A wireless navigator for recognizing the product information tag attached to the product by flying to a predetermined scan point corresponding to each of the plurality of product products and recognizing the shelf information tag attached to the plurality of shelves; And a control system for controlling a flight path of the wireless air vehicle through the shelf related information transmitted from the wireless air vehicle.
- the shelf related information may include a unique ID, a size, and a placement direction of the shelf.
- a plurality of shelf information tags for providing the shelf related information are attached to the shelves at positions corresponding to the respective paths of the wireless air vehicle.
- the recognition device is mounted on the wireless navigation device, and recognizes the product information tag and the shelf information tag to provide the product information tag and the shelf information tag to the control system.
- a distance measuring device mounted on the radio navigation system and measuring the spatial distance based on the position of the radio navigation system and providing the measured distance to the control system.
- the method may further comprise recognizing the shelf information tag through the unmanned air vehicle and generating a layout map of the warehouse through the shelf related information corresponding to the shelf information tag and the space distance information of the flying object .
- the step of generating the layout diagram may include the steps of creating a partial layout diagram of the warehouse through the space distance information of the air vehicle; Moving the air vehicle in a predetermined direction; And identifying the shelf in the layout by recognizing the shelf information tag.
- the shelf related information may include a unique ID, a size, and a placement direction of the shelf.
- the unmanned aerial vehicle moves to a shelf on which flammable or combustible goods are loaded.
- the unmanned aerial vehicle further includes a step of storing the unique ID corresponding to the shelf on which the flammable or combustible product is loaded in the scan mode.
- an information processing system including a plurality of product items each having a product information tag for providing product-related information; An airplane for flying to a predetermined scan point corresponding to each of the plurality of products to recognize the product information tag attached to the product; And a control system for reconfiguring scan points of the airplane by comparing recognition information transmitted from the airplane with previously stored management information through a scan operation.
- the shelf-related information may include a size and an arrangement direction of the shelf.
- a plurality of shelf information tags for providing shelf related information are attached to the shelves at positions corresponding to the respective paths of the airplane.
- a recognizing device mounted on the air vehicle for recognizing the product information tag and providing the product information tag to the control system according to the present invention; And a distance measuring device mounted on the airplane and measuring the spatial distance based on the position of the airplane and providing the measured distance to the control system.
- a method of managing a plurality of goods comprising the steps of: checking the quantity of goods received, storing the items as management information, and loading the goods; Moving a flying object to a position corresponding to a predetermined scan point of the product; Generating recognition information by recognizing a product information tag attached to the product through a scanning operation of the air vehicle; And reconfiguring the scan point of the flying object by comparing the management information and the recognition information.
- the method may further include updating the management information with the rewritten identification information after the resetting step.
- the method may further include setting spatial information of a position where the management information matches the recognition information to a final scan point.
- a shelf of a predetermined size for loading the plurality of goods is disposed in the warehouse, a shelf information tag for providing shelf related information is attached to the shelf, and the shelf information tag And generating a layout map of the warehouse through the shelf association information corresponding to the shelf information tag and the space distance information of the flying object.
- the shelf-related information includes a width, a length, a height, and a placement direction of the shelf.
- the step of generating the layout diagram may include the steps of creating a partial layout diagram of the warehouse through the space distance information of the air vehicle; Moving the air vehicle in a direction in which an opened passage is formed; And identifying the shelf in the layout by recognizing the shelf information tag.
- the resetting step fills the predetermined range based on the space distance information.
- the warehouse control system according to the present invention provides the following effects.
- the present invention can acquire the distribution product information through the drone, the labor cost and time required to acquire the distribution product information can be minimized.
- the present invention by comparing the recognition information and the management information to correct the positions of the drones, it is possible to accurately acquire the logistics product information for all the logistics products without missing, thereby improving the reliability of the managed data have.
- the present invention has the effect of improving the management efficiency of the logistics warehouse because it is possible to quickly find the logistics warehouses loaded in the warehouse.
- the present invention is capable of delivering various information in an emergency, it has an effect of helping the rescuer to derive the most appropriate solution using the information.
- FIG. 1 is a view for explaining a warehouse control system according to an embodiment of the present invention
- FIG. 2 is a view for explaining a control operation of the control system according to the embodiment of the present invention.
- FIG. 3 and FIG. 4 are diagrams for explaining an operation of creating a warehouse layout diagram using the wireless navigation system of FIG. 1;
- FIG. 5 is a schematic view for explaining a warehouse control system according to an embodiment of the present invention.
- FIG 6 is an operation diagram for explaining an emergency mode of the warehouse control system of the present invention.
- FIG. 7 is a schematic view for explaining the unmanned aerial vehicle of FIG. 1;
- the present invention relates to a large number of logistics products each having a product information tag for providing product related information, a plurality of shelves having shelf information tags mounted thereon for providing shelf related information, A wireless navigator for recognizing the shelf information tag attached to the plurality of shelves by recognizing the product information tag attached to the corresponding distribution product by flying to a predetermined scan point corresponding to each of the warehouses, And a control system for controlling the flight path of the wireless air vehicle through the shelf related information.
- first and second components are intended to distinguish one element from another, and the scope of the right should not be limited by these terms.
- first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.
- the identification code (e.g., a, b, c, etc.) is used for convenience of explanation, the identification code does not describe the order of each step, Unless otherwise stated, it may occur differently from the stated order. That is, each step may occur in the same order as described, may be performed substantially concurrently, or may be performed in reverse order.
- FIG. 1 is a view for explaining a warehouse control system according to an embodiment of the present invention.
- the warehouse control system includes a plurality of products BX to which product information tags (T1, T2, and T3, see FIG. 3) are attached to provide product related information;
- the product information tags T1, T2, and T3 attached to the corresponding product BX are transferred to the predetermined scan points A, B, and C corresponding to the plurality of products BX, A wireless flying object (100) for recognizing the object;
- a control system for resetting the scan point of the wireless air vehicle by comparing recognition information transmitted from the wireless air vehicle 100 with previously stored management information through a scan operation.
- a shelf 200 of a predetermined size which is disposed in the warehouse and on which the plurality of goods BX are loaded.
- a plurality of products BX are seated with various products therein, and the outside may be formed of a packaging member, for example, in the form of a box for protecting the product.
- the product information tag which can refer to the distribution information of the product may be attached to a plurality of the goods BX in the form of a barcode or an electronic tag.
- the radio-controlled vehicle 100 can be configured as a free-flightable configuration, for example, as a dron according to a command of a control system controlled by an administrator.
- Drones are basically capable of flying, and can be equipped to perform various operations.
- the wireless navigation device 100 is equipped with a recognition device such as a scanning device or a receiving device for recognizing the product information tag and providing the product information tag to the control system, and measures the spatial distance based on the position of the wireless navigation device 100, A distance measuring device 110 such as a distance measuring sensor is mounted.
- the space distance means the distance between the wireless navigation device 100 and the wall, the wireless navigation device 100, and the shelf 200, and is used to generate a layout change operation or a layout view of a warehouse to reset a scan point to be described later .
- a control system (not shown) controls a wireless operation of the wireless navigation device 100, a scan operation for recognizing the product information tag, and the like. Then, a database for managing a plurality of products BX is generated through the information recognized by the wireless air vehicle 100.
- the information transmitted from the wireless air vehicle 100 to the control system will be referred to as "recognition information ", and the information stored in the control system will be referred to as" management information ".
- recognition information the information transmitted from the wireless air vehicle 100 to the control system
- management information the information stored in the control system.
- the management information the information corresponding to the first goods item BX to be initially received
- the management information corresponds to the management information.
- the control system is able to reset the scan point of the wireless navigator 100 by comparing the recognition information with the previously stored management information. This will be described in more detail with reference to FIG.
- FIG. 2 is a view for explaining the control operation of the control system according to the embodiment of the present invention.
- FIG. 2 shows a side view of a shelf 200 on which a plurality of products BX are stacked and three products A 1, A 2 and A 3 are stacked on the top of the shelf 200, B2 and B3 are stacked in the center of the shelf 200 and two products C1 and C2 are stacked at the bottom of the shelf 200.
- Each of the products A 1, A 2, A 3, B 1, B 2, B 3, C 1 and C 2 is provided with a product information tag which can provide product related information on the packaged product. It is possible to recognize the corresponding product information tag through wireless communication at a predetermined interval with the information tag.
- the wireless air vehicle 100 must be positioned at the first scan point A to recognize the three goods products A1, A2 and A3 stacked on the top and the three goods products B1, B2, B3 in order to recognize the two goods items C1 and C2 stacked at the lowermost part and to be located at the third scan point C in order to recognize the two goods products C1 and C2 loaded at the lowermost part.
- the coordinates of the first to third scan points A, B and C are stored in the control system.
- the control system controls the first to third scan points A, B and C to recognize the corresponding product, So that the wireless flying object 100 can be positioned.
- the wireless device 100 may not be positioned at a predetermined scanning position.
- the control system detects this and resets the scan point of the wireless air vehicle 100 so that the wireless air vehicle 100 can be controlled to be positioned at the scan point where the scan can be performed.
- the warehouse control system includes a step of checking the quantity of the received goods BX, storing the quantity of the goods BX as management information, and loading the goods BX; Moving the wireless navigation device (100) to a position corresponding to a predetermined scan point of the product (BX); Generating identification information by recognizing a product information tag attached to the product BX through a scan operation of the wireless navigator 100; And reconfiguring the scan point of the wireless navigator by comparing the management information with the recognition information.
- the warehouse control system according to the embodiment of the present invention further includes updating the management information with the rewritten identification information after the resetting step.
- the quantity of the goods is checked and stored as management information. That is, the management information indicates that the three distribution products A1, A2, and A3 are loaded at the top of the shelf 200 and that three distribution products B1, B2, and B3 are loaded at the center of the shelf 200 And two items of goods (C1, C2) are loaded at the bottom of the shelf (200).
- the manager then manages the eight logistics products A1, A2, A3, B1, B2, B3, C1, C2 loaded using the wireless navigation device 100.
- the manager places the wireless navigator 100 at the first scan point A, and the wireless navigator 100 recognizes the three logistics products A1, A2, and A3 on the top of the shelf 200, .
- the wireless navigation device 100 is positioned at the second scan point B and the third scan point C to perform a recognition operation.
- the wireless navigation device 100 When the wireless navigation device 100 is accurately positioned at the first to third scan points A, B and C, the wireless navigation device 100 displays three distribution products A1, A2, A3 ) Is loaded and three pieces of goods B1, B2 and B3 are loaded in the center of the shelf 200 and two pieces of goods C1 and C2 are loaded at the bottom of the shelf 200 System, and the control system compares the previously stored management information with the recognition information to verify whether the logistics product is missing or not.
- the control system recognizes that the previously stored management information and the recognition information are different from each other, and is able to reset the scan point so that the wireless navigator 100 can be relocated to the first to third scan points A, B, and C .
- the resetting operation is performed by freely flying a predetermined range on the basis of the current space distance information provided by the wireless navigation device 100.
- the wireless navigation device 100 continuously scans the product BX during free flight, Information to the control system. Then, the control system continuously compares the recognition information and the management information and performs a reset operation until matching is achieved.
- the fact that the recognition information and the management information match each other means that the wireless navigation device 100 is located at a desired scanning point, which means that it is possible to accurately recognize the quantity of the goods BX to which the wireless navigation device 100 is loaded .
- the warehouse control system compares the recognition information with the management information to recognize that the wireless navigational object 100 is out of the predetermined scan point and in this case, It is possible to reset the scan point so that the radiofrequency vehicle 100 is located at the original scan point.
- the first to third scan points A , B, and C do not change.
- the first to third scan points A, B, and C must be changed.
- control system it is also possible for the control system to reset the existing scan point to another scan point through the reset operation of the wireless navigator 100.
- the control system sets the current spatial information of the wireless navigation device 100 as a new final scan point when the re-created recognition information matches the management information at the reset scan point. Therefore, when it is necessary to check the quantity for management of the product BX again, it is possible for the control system to control the wireless air vehicle 100 to be positioned at the newly set final scan point.
- the warehouse control system compares the management information stored in the control system with the identification information acquired from the wireless navigator 100 to reset the scan position of the wireless navigator 100, It is possible to acquire information about the logistics product, which means that the reliability of the management information stored in the control system can be enhanced.
- the goods to be loaded in the warehouse may have different sizes and shapes, which may vary depending on the size and shape of the goods to be loaded in the first to third scan positions A, B, and C it means. Accordingly, in the warehouse control system according to the embodiment of the present invention, it is possible to continuously update the scan point optimally through the reset operation of the wireless body 100 in order to increase the recognition rate for the goods not loaded according to the standard .
- the management information may be erroneous due to the administrator's error.
- the manager can reset the scan point and then transmit the re-created recognition information to the control system to update the management information.
- FIG. 3 and FIG. 4 are views for explaining an operation of creating a warehouse layout diagram using the wireless air vehicle 100 of FIG.
- a plurality of shelves 200 for loading a plurality of products are provided in the warehouse.
- three warehouses B1, B2, and B3 are disposed in the center of the shelf 200 as an example.
- the product information tags T1, T2, and T3 for providing product related information are attached to each of the three distribution products B1, B2, and B3.
- a shelf information tag is attached to the shelf (200).
- the shelf information tag XYZ provides all the information corresponding to the shelf 200.
- the information provided here may be a unique ID of the shelf 200, a manufacturing date, a material, a weight, a size, a placement direction,
- the size of the shelf 200 includes information such as a length, a length, and a height.
- the shelf 200 has an external shape of a hexagonal column having a width (CX), a length (CY), and a height (CZ).
- the shape of the shelf 200 can be designed in various shapes for loading the goods BX, and the shelf information tag XYZ can include information corresponding to its external size.
- the unmanned aerial vehicle 100 is equipped with a recognition device, which is capable of recognizing a shelf level tag in addition to recognizing a product information tag.
- the wireless navigating vehicle 100 can detect the size and arrangement direction of the shelf 200 by recognizing the shelf information tag XYZ and it is possible to generate the distribution warehouse layout diagram through the detection.
- a method of generating the layout of the warehouse using the wireless navigation device 100 and the shelf information tag XYZ will be described with reference to FIG.
- FIG. 4 illustrates a plan view P of the warehouse and FIG. 4 illustrates an example in which the first to third shelves 200A, 200B, and 200C are disposed in the warehouse.
- the first shelf 200A is disposed on the lower left side with respect to the plan view P while the second shelf 200B is disposed on the upper left side with respect to the plan view P and the third shelf 200C is disposed on the upper left side with respect to the plan view P ) On the right side.
- the horizontal and vertical sizes of the first shelf 200A and the horizontal and vertical sizes of the second shelf 200B are the same as one example, and the size of the third shelf 300C on the plane is As an example.
- the first shelf 200A is attached with a shelf information tag XYZ corresponding to the first shelf 200A on the upper left portion of the plane and the second shelf 200B is attached to the second shelf 200A
- the shelf information tag XYZ corresponding to the third shelf 200C is attached to the lower left portion and the upper portion on the plane of the third shelf 200C do.
- the layout of the warehouse is substantially created in the control system by the spatial distance information and the size information of the shelf provided by the wireless air vehicle 100, and the manager can design the wireless navigation system 100 based on the layout of the warehouse 100) and management of the goods BX can be performed.
- the layout of the warehouse is generated in the order of (1) -> (2) -> (3), and the actual position of the radiofrequency 100 in the control system can be represented by "D".
- the outer walls of the warehouse are shown in (1), (2), and (3).
- the outer walls of the first and second shelves 200A, 200B, and 200C can also be created in the layout along with the first to third shelves 200A, 200B, and 200C according to the flight path of the wireless air vehicle 100.
- the measurement distance is limited.
- this limited measurement distance is shown by a dotted circle with reference to the wireless vehicle 100 "D".
- the measurement of the circle of the dotted line in the wireless navigation device 100 means that the wireless navigation device 100 is equipped with a distance measurement device for measuring the spatial distance to the side surface.
- the wireless navigation device 100 when the wireless navigation device 100 enters an operation mode for generating a layout view of the warehouse, the wireless navigation device 100 provides the current spatial distance information to the control system.
- the spatial distance information means the distance between the wireless navigation device 100 and the wall, the wireless navigation device 100, and the shelf 200.
- the wireless air vehicle 100 scans the range of the circle of the dotted line to provide the spatial distance information to the control system, and the control system is able to generate the warehouse layout diagram like (1).
- the wireless flying object 100 moves in a direction in which the open path is formed, continuously provides its spatial distance information to the control system, and continuously generates the layout of the warehouse through the control system.
- the control system generates the layout map using only the space distance information of the wireless navigation device 100, The outer wall and the shelf 200 can not be distinguished.
- the wireless navigating unit 100 recognizes the shelf information tag XYZ and provides the shelf related information to the control system.
- the shelf-related information provided may include the size and arrangement direction of the shelf, the size of the shelf means the width, the length, the height, etc., and the arrangement direction is the width direction it means. Therefore, the control system can estimate the arrangement of the first shelf 200A on the basis of the shelf information tag XYZ, through which the first shelf 200A is shown as (2) in the layout of the warehouse It is possible.
- the control system recognizes the shelf information tag XYZ of the first shelf 200A while the first shelf 200A is out of the spatial distance scanned by the wireless navigator 100, as shown in (2) It is possible to create a warehouse layout diagram shown so that the first shelf 200A is completely included. At this time, since the shelf information tag XYZ corresponding to the second shelf 200B is not yet recognized, it can be seen that only a part of the second shelf 200B is shown in (2).
- the wireless navigation device 100 continues to move in the direction in which the open path is formed, recognizes the shelf information tag XYZ of the second shelf 200B, and recognizes the shelf information tag XYZ of the third shelf 200C And provides it to the control system. Accordingly, it is possible for the control system to show the second shelf 200B and the third shelf 200C as (3) on the layout of the warehouse based on the provided shelf information tag XYZ.
- the third shelf 200C has a plurality of shelf information tags XYZ attached thereto to recognize the placement direction of the third shelf 200C more accurately and to allow the wireless navigating unit 100 to be mounted on a third shelf 200C) of the shelf information tag (XYZ) in a stochastic manner.
- the control system transmits the two shelf information tags XYZ through the two shelf information tags XYZ, And the size are more accurately recognized to generate a layout.
- the control system it is also possible to recognize the placement direction and size of the shelf through the information provided in one shelf information tag XYZ, but if the control system is provided with a plurality of shelf information tags XYZ attached to the shelf outline The control system will be able to more accurately recognize the outline of the shelf so as to generate the layout plan.
- the wireless navigator 100 transmits the upper path and the lower path 200.
- the third shelf 200C is attached to the shelf information tag XYZ on both sides of the flight path of the radiofrequency 100.
- the third shelf 200C can be recognized quickly.
- the warehouse control system of the present invention can accurately and quickly create the distribution warehouse layout diagram through the wireless flying object 100, and it is possible to set the flight path of the wireless flying object 100 more smoothly.
- the smooth flight path setting of the wireless air vehicle 100 means that the flight time of the wireless air vehicle 100 can be shortened and the collision accident can be prevented.
- the layout map of the warehouse is generated using the length and length of the shelf information tag XYZ, but it is also possible to generate the three-dimensional layout map by receiving the height information.
- the unmanned aerial vehicle 100 can freely fly, a flight path can be formed at an upper portion of the shelf 200 in a warehouse having a relatively high ceiling. That is, the unmanned aerial vehicle 100 can fly in a predetermined direction without being constrained by the shelf 200 at the upper part of the shelf 200.
- the shelf information tag XYZ is preferably attached to the top of the shelf 200.
- the unmanned aerial vehicle 100 must fly along a passage formed by the shelf 200 as described with reference to FIG. 4,
- the tags XYZ need only be attached adjacent to the flight path.
- FIG. 5 is a schematic view for explaining a warehouse control system according to an embodiment of the present invention.
- the warehouse control system includes a plurality of products BX each having a product information tag for providing product related information; A plurality of shelves 200 to which the plurality of goods are loaded and attached with shelf information tags XYZ1 and XYZ2 for providing shelf related information; Recognizes the product information tag attached to the corresponding distribution product BX by flying to a predetermined scan point corresponding to each of the plurality of products BX and recognizing the shelf information tag attached to the plurality of shelves 200 A wireless flying object (100) for recognizing the object; And a control system for controlling the flight path of the wireless air vehicle 100 through the shelf related information transmitted from the wireless air vehicle 100.
- the warehouse control system can recognize the shelf information tag of the shelf 200 using the unmanned air vehicle 100, and can recognize the shelf information tag of the shelf 200 using the recognized shelf information tag. It is possible to control the path.
- the warehouse control system stores information such as the name, quantity, and information about the racks to be loaded, as management information, and transmits the goods BX to a corresponding plurality of shelves 200 ); Recognizing a shelf information tag (XYZ) attached to each of the plurality of shelves (200) using the unmanned air vehicle (100); Matching identification information transmitted from the unmanned air vehicle (100) and a warehouse layout map; And moving the unmanned air vehicle (100) to a corresponding shelf (200) on which the managed product is loaded using the management information, recognizing the product information tag attached to the managed product and managing the goods .
- XYZ shelf information tag
- the manager checks the quantity of the goods (BX) to be received and stores the information as management information.
- the management information stored at this time includes the product name, the quantity, and the unique ID of the shelf to be loaded. For example, assuming that 100 pieces of the A product are loaded on the No. 7 shelf, the manager stores the A product name, 100 which is the quantity of the A product, and the unique ID 7 of the shelf on which the A product is loaded as management information . After the management information is stored by the manager, the goods item BX is loaded on each shelf 200.
- the unmanned aerial vehicle 100 travels through a flight path such as (1) to recognize the layout information tag (XYZ1, XYZ2) during flight to create a layout of the warehouse.
- the unmanned air vehicle 100 recognizes the first shelf information tag XYZ1 while flying over the shelf with the first shelf information tag XYZ1 attached thereto and then transmits the second shelf information tag (XYZ2) while recognizing the second shelf information tag (XYZ2).
- the air vehicle 100 transmits the recognition information thus recognized to the control system, and the control system matches the delivered recognition information and the warehouse layout.
- the method of generating the warehouse layout map has already been described with reference to FIG. 4, so that the description thereof will be omitted.
- the manager when the manager needs to manage a certain logistics product after the loading of the goods BX has been completed, the manager selects the logistics product to be managed by using the management information stored in the control system,
- the unmanned aerial vehicle 100 moves the unmanned aerial vehicle 100 with the loaded shelf and the unmanned air vehicle 100 recognizes the product information tag attached to the managed product warehouse so that the administrator can manage the quantity of the corresponding goods.
- the UAV 100 travels through the same flight path as (2) and recognizes the product information tag attached to a plurality of goods (not shown) during the flight.
- the shelf with the first shelf information tag XYZ1 passes directly to the shelf with the second shelf information tag XYZ2, It is possible to recognize the product information tags of each of the plurality of distribution products.
- the warehouse control system first recognizes the shelf information tag and matches the shelf information tag with the warehouse layout map.
- the unmanned air vehicle 100 is directly moved to the shelf, It is possible to search and manage the product quickly.
- the unmanned aerial vehicle 100 is one, and the unmanned air vehicle 100 may be used in plurality.
- FIG. 6 is an operation diagram for explaining an emergency mode of the warehouse control system of the present invention, in which a plurality of unmanned aerial vehicles are used as an example.
- the first to fourth shelves 200A, 200B, 200C and 200D are shown, and a first unmanned vehicle D1 and a second unmanned air vehicle D2 for managing the goods carried on each shelf .
- the first unmanned aerial vehicle D1 and the second unmanned aerial vehicle D2 fly through a predetermined flight path under the control of the control system in a general scan mode such as a layout creation operation of a warehouse and a logistics product management operation.
- the first unmanned air vehicle D1 moves along the flight path of the solid line in the direction of the first shelf 200A from the entrance, and the second unmanned air vehicle D2 moves from the entrance to the second shelf 200B along the flight path of the solid line.
- the first unmanned aerial vehicle D1 and the second unmanned air vehicle D2 are moved to a rack on which flammable or combustible goods are loaded, (D1) and the second unmanned flight vehicle (D2) are controlled to circulate around the shelf (200D).
- the first unmanned air vehicle D1 moves to the fourth shelf 200D along the dotted line at the time E of fire occurs, And the second unmanned aerial vehicle D2 is also able to move along the dotted line to the fourth shelf 200D.
- the fire brigade member may move to the third shelf 200C to suppress direct fire, It is possible to grasp the positions of the unmanned aerial vehicle D1 and the second unmanned aerial vehicle D2 and intuitively grasp the measures for the fourth shelf 200D which can cause more damage when the fire is transferred .
- the control system converts the operation mode of the first unmanned aerial vehicle D1 and the second unmanned air vehicle D2 in the scan mode into the emergency mode, It is possible to move the second unmanned aerial vehicle D2 to the fourth shelf 200D. This is possible because the management information stored in the control system accurately grasps the product-related information, the unique ID of the shelf on which the corresponding goods are loaded, and the arrangement of the shelf.
- a disaster such as a fire may cause a control operation to be limited by the control system.
- a unique ID corresponding to a shelf in which flammable or combustible goods are loaded in a scan mode, not in an emergency is stored in a storage medium mounted in the unmanned air vehicle 100 It is possible to directly check the stored unique ID regardless of the control system in the emergency mode and utilize it as information for moving to the corresponding shelf.
- FIG. 7 is a schematic view for explaining the unmanned aerial vehicle 100 of FIG. 1.
- FIG. 7 is a schematic view for explaining the unmanned aerial vehicle 100 of FIG. 1.
- a distance measuring apparatus 110 is disposed below the main body BD and a distance measuring apparatus 110 is provided with a type A and a type B, Type.
- (A) type is a configuration in which two distance measuring devices 110_A1 and 110_A2 are formed.
- the first distance measuring device 110_A1 is mounted on the lower portion of the main body BD of the UWB 100 in the ground direction and measures the spatial distance between the UWB 100 and the first measurement point on the ground.
- the first measurement point refers to a point where the first distance measurement device 110_A1 of the UAV 100 touches the ground vertically.
- the second distance measuring device 110_A2 is installed on the lower side of the main body BD of the unmanned air vehicle 100 in the ground direction and measures a spatial distance between the unmanned air vehicle 100 and the second measurement point on the ground.
- the second measuring point refers to a point where the second distance measuring device 110_A2 of the unmanned air vehicle 100 vertically touches the ground.
- the first and second distance measurement points are different points included in the ground.
- the control system controls the unmanned air vehicle 100 so that the measured distance through the first distance measuring device 110_A1 is 5 m And it is possible to control the air vehicle 100 such that the measured spatial distance through the second distance measuring device 110_A2 is 5 m.
- the control system controls the UAV 100 so that the UAV 100 can be disposed at a desired position, and the air vehicle 100 is positioned parallel to the ground 5 m above the ground.
- the type (B) is a structure in which one distance measuring device 110B is formed, and is fixedly coupled to the body BD of the unmanned air vehicle 100 between the unmanned air vehicle 100 and the distance measuring device 110B An angle adjusting portion T for changing the distance measuring device 110B to a predetermined angle is formed.
- the angle adjusting portion T is shown schematically, and it is possible for the manager to control the adjusting portion T through the control system to adjust the distance measuring device 110B to a predetermined angle.
- the distance measuring device 110B is mounted on the lower portion of the main body BD of the UWB 100 in the ground direction and measures the spatial distance between the UWB 100 and the first measurement point on the ground, Thereby measuring the spatial distance between the unmanned air vehicle 100 and the second measurement point on the ground.
- the first measurement point refers to a point where the distance measurement device 110B of the UAV 100 touches the ground vertically
- the second measurement point corresponds to a distance corresponding to a predetermined angle Means a point where the distance measuring apparatus 110B looks at a state in which the angle is changed.
- the first and second distance measurement points are different points included in the ground.
- the unmanned air vehicle 100 is to be controlled to be located at, for example, 5 m from the ground, the unmanned air vehicle 100 is controlled so that the first clearance distance between the unmanned air vehicle 100 and the first measurement point is 5 m, It is possible to control the unmanned aerial vehicle 100 so that the second spatial distance of the second measurement point has a corresponding distance.
- the control system controls the UAV 100 so that the UAV 100 can be disposed parallel to a desired position, and the air vehicle 100 is accurately positioned at 5 m above the ground.
- the warehouse management apparatus includes a distance measuring device capable of measuring a plurality of measurement points and accurately arranges the unmanned air vehicle 100 at a desired position through a spatial distance to each of a plurality of measurement points To be controlled.
- first and second measurement points are formed on the ground and include the first distance measuring device 110_A1 and the second distance measuring device 110_A2 for measuring the same, ) May be equipped with a plurality of lateral distance measuring devices (not shown) for measuring the spatial distance of a wall or shelf, through which the utilization of the spatial distance to the side is similar to the utilization of the spatial distance to the ground described above And therefore will not be described separately.
- the measurement standard of the spatial distance is set as the ceiling rather than the ground to solve the problem of the obstacle.
- a ceiling it may have a domed structure instead of a balanced structure according to a warehouse, and separate components such as a lamp may be arranged. Therefore, in the embodiment of the present invention, a further configuration as shown in FIG. 8 will be proposed.
- FIG 8 is an internal cross-sectional view for explaining the internal configuration and flight operation of the warehouse.
- a virtual reference film 300 is formed on the flying space of the UAV 100 in the warehouse CG. It is preferable that the virtual reference film 300 is formed in parallel with the ground as a reference structure for measuring the spatial distance in the direction of the ceiling, which is the opposite direction of the ground direction.
- the virtual reference film 300 may be made of various materials. However, it is preferable that the virtual reference film 300 is made of a material that can be reacted with, for example, infrared rays or ultrasonic waves, which is used as a medium for distance measurement in the distance measuring apparatus. In the case of the shape of the virtual reference film 300, the shape of the virtual reference film 300 may be formed in a mesh shape or a plurality of parallel lines so as not to affect the brightness due to the illumination disposed on the virtual reference film 300, .
- the first distance measuring device 110_A1 of the type shown in FIG. 7A is used to measure the spatial distance to each of the first and second measuring points formed on the virtual reference film 300
- the second distance measuring device 110_A2 may be mounted on the body BD of the unmanned air vehicle 100 in the direction of the virtual reference film 300 and the distance measuring device 110B of the vehicle B may be mounted on the unmanned air vehicle 100 In the direction of the virtual reference film 300 on the main body BD.
- the warehouse management apparatus can measure spatial distance based on each of the ground and virtual reference films 300 for more accurate position measurement of the UAV 100.
- the measuring device can be mounted on the upper and lower portions of the main body BD of the unmanned aerial vehicle 100 in the direction of the ground and imaginary reference film 300, respectively. The explanation will be described below again.
- the unmanned aerial vehicle 100 can fly at the same spatial distance as S1, S2, and S3 based on the virtual reference film 300.
- the UAV 100 has different spatial distances such as G1, G2, and G3 with respect to the ground, but the unmanned air vehicle 100 maintains S1, S2, and S3 based on the virtual reference film 300 Because the airplane 100 is flying, it is possible to fly at the same height at all times with respect to the ground.
- FIG. 7 shows an example in which the distance measuring apparatus of the type (A) and the distance measuring apparatus of the type (B) are mounted under the main body BD of the unmanned air vehicle 100. As described above, It is also possible to mount the distance measuring device and the distance measuring device of the type (B) on the body BD of the UAV 100.
- the first distance measuring apparatus 110_A1 of the (A) type is mounted on the lower portion of the main body BD of the unmanned air vehicle 100, and the second distance measuring apparatus 110_A2 of the (A) Or may be mounted on the main body BD of the air vehicle 100.
- the first distance measuring device 110_A1 measures the spatial distance of the first measuring point formed on the ground
- the second distance measuring device 110_A2 measures the spatial distance of the second measuring point formed on the virtual reference film 300 Can be measured.
- the first distance measuring device 110_A1 measures the spatial distance of 4 m
- the distance measuring apparatus 110_A2 can measure the space distance of 1 m and judge that the unmanned air vehicle 100 is located at 4 m above the ground.
- first distance measuring device 110_A1 and the second distance measuring device 110_A2 are respectively mounted on the upper and lower portions of the UAV 100 respectively and the spatial distance values measured by the first distance measuring device 110_A1 and It is possible to more clearly grasp the position and the degree of parallelism of the UWB 100 by comparing the space distance values measured by the two distance measuring device 110_A2.
- the distance measuring device 110B of the type B is mounted on the side of the unmanned object 100 such that the first distance measuring device 110_A1 and the second distance measuring device 110_A2 of the (A) It is also possible to mount them on the top and bottom of the body, respectively.
- the warehouse management apparatus of the present invention measures the space distance through the distance measuring device, the weight of the warehouse management apparatus can be drastically reduced.
- the obstacle can be classified into an obstacle that moves continuously like a worker according to the degree of movement, an obstacle that stops moving after the work such as a transportation vehicle, and a stationary obstacle such as a lathe. Therefore, it is necessary that the unmanned aerial vehicle 100 should be controlled and analyzed such various obstacles.
- the control system may use the distance measuring device mounted on the lower portion of the unmanned air vehicle 100 to move the unmanned air vehicle 100 to the ground It will be controlled to maintain a clearance distance of 4m as a reference.
- the unmanned air vehicle 100 measures the clearance between the obstacle and the unmanned air vehicle 100, and the control system detects that the unmanned air vehicle 100 is flying too low And controls the altitude of the UAV 100 to be increased. As a result, an accident that the UAV 100 collides with the virtual reference film 300 may occur, and it is impossible to manage the UAV 100 as well as the operation of the UAV 100 itself.
- the flight control method of the warehouse management apparatus includes: flying the unmanned air vehicle 100 to a predetermined target point; Measuring a spatial distance to the unmanned air vehicle (100) through a distance measuring device of the unmanned air vehicle (100); Maintaining an altitude of the unmanned aerial vehicle (100) in response to an obstacle detected in the measuring step; And updating the distribution warehouse layout by analyzing the degree of movement of the obstacle.
- the control system causes the unmanned aerial vehicle 100 to fly to a predetermined target point.
- the unmanned aerial vehicle 100 generates a warehouse layout diagram as shown in FIG. 4, carries out a flight operation to scan a goods item, and operations to be described later in all flight operations can be applied.
- the UAV 100 continuously measures the space distance between the UAV 100 and the ground through the distance measuring device mounted on the UAV 100 while providing the control system with the distance.
- the control system can control the unmanned aerial vehicle 100 so that the unmanned air vehicle 100 can maintain the predetermined altitude.
- the unmanned air vehicle 100 when an obstacle such as a worker, a transportation vehicle, or a rack is detected under the unmanned air vehicle 100, the unmanned air vehicle 100 maintains an altitude. Then, the UAV 100 holds the obstacle at the detected position, maintains the attitude at the corresponding position, and transmits the obstacle movement to the control system for a predetermined time.
- the control system can analyze the degree of movement of the obstacle according to the movement provided by the unmanned aerial vehicle (100).
- the degree of movement means the length of time in which the obstacle is continuously stopped at the corresponding position. Therefore, it is possible to classify obstacles having short travels as workers or transportation vehicles, and obstacles having long travels as shelves. For reference, it is also possible to divide the transportation vehicle into long obstacles in consideration of the work time of the transportation vehicle by reflecting the worker's work information.
- control system it is possible for the control system to classify obstacles into worker, transportation vehicle, and lathe by analyzing the degree of movement according to movement of the obstacle provided in the unmanned air vehicle 100, And the UAV 100 is applied to the flight.
- the warehouse management apparatus can move the unmanned aerial vehicle 100 to a desired position through an accurate path using a distance measuring device and analyze the movement of the obstacle detected on the movement route It is possible to update the warehouse layout.
- the present invention relates to a warehouse control system.
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Abstract
Description
Claims (22)
- 제품 관련 정보를 제공해주기 위한 제품 정보 태그가 각각 부착된 다수의 물류품;상기 다수의 물류품이 적재되며 선반 관련 정보를 제공해주기 위한 선반 정보 태그가 부착된 다수의 선반;상기 다수의 물류품 각각에 대응하는 예정된 스캔 지점까지 비행하여 해당 물류품에 부착된 상기 제품 정보 태그를 인식하며, 상기 다수의 선반에 부착된 상기 선반 정보 태그를 인식하기 위한 무선 비행체; 및상기 무선 비행체에서 전달되는 상기 선반 관련 정보를 통해 상기 무선 비행체의 비행 경로를 제어하기 위한 제어 시스템을 포함하는물류 창고 제어 시스템.
- 제1항에 있어서,상기 선반 관련 정보는 상기 선반의 고유 아이디와 크기와 배치 방향을 포함하는 것을 특징으로 하는물류 창고 제어 시스템.
- 제2항에 있어서,상기 선반에는 상기 선반 관련 정보를 제공해주기 위한 다수의 선반 정보 태그가 상기 무선 비행체의 경로 각각에 대응하는 위치에 부착되는 것을 특징으로 하는물류 창고 제어 시스템.
- 제1항에 있어서,상기 무선 비행체에 장착되며, 상기 제품 정보 태그와 상기 선반 정보 태그를 인식하여 상기 제어 시스템에 제공해주기 위한 인식 장치; 및상기 무선 비행체에 장착되며, 상기 무선 비행체의 위치를 기준으로 공간 거리를 측정하여 상기 제어 시스템에 제공해주기 위한 거리 측정 장치를 더 포함하는물류 창고 제어 시스템.
- 입고된 물류품의 품명, 수량, 적재될 선반에 대한 정보를 관리 정보로 저장하고 상기 물류품을 해당하는 다수의 선반 각각에 적재하는 단계;무인 비행체를 이용하여 상기 다수의 선반 각각에 부착된 선반 정보 태그를 인식하는 단계;상기 무인 비행체로부터 전달되는 인식 정보와 물류 창고 배치도를 매칭시키는 단계; 및상기 관리 정보를 이용하여 상기 무인 비행체를 관리 대상 물류품이 적재된 해당 선반으로 이동시키고, 상기 관리 대상 물류품에 부착된 제품 정보 태그를 인식하여 물류품을 관리하는 단계를 포함하는물류 창고 제어 시스템의 동작 방법.
- 제5항에 있어서,상기 무인 비행체를 통해 상기 선반 정보 태그를 인식하고, 상기 선반 정보 태그에 대응하는 상기 선반 관련 정보와 상기 비행체의 공간 거리 정보를 통해 상기 물류 창고의 배치도를 생성하는 단계를 더 포함하는물류 창고 제어 시스템의 동작 방법.
- 제6항에 있어서,상기 배치도를 생성하는 단계는,상기 비행체의 공간 거리 정보를 통해 물류 창고의 일부 배치도를 생성하는 단계;예정된 방향으로 상기 비행체를 이동하는 단계; 및상기 선반 정보 태그를 인식하여 상기 배치도에 상기 선반을 도시하는 단계를 포함하는물류 창고 제어 시스템의 동작 방법.
- 제5항에 있어서,상기 선반 관련 정보는 상기 선반의 고유 아이디와 크기와 배치 방향을 포함하는 것을 특징으로 하는물류 창고 제어 시스템의 동작 방법.
- 제5항에 있어서,긴급 모드시 상기 무인 비행체는 인화성 또는 가연성 물류품이 적재된 선반으로 이동하는 것을 특징으로 하는 물류 창고 제어 시스템의 동작 방법.
- 제8항에 있어서,상기 무인 비행체는 스캔 모드에서 상기 인화성 또는 가연성 물류품이 적재된 선반에 대응하는 상기 고유 아이디를 내부에 저장하는 단계를 더 포함하는 물류 창고 제어 시스템의 동작 방법.
- 제품 관련 정보를 제공해주기 위한 제품 정보 태그가 각각 부착된 다수의 물류품;상기 다수의 물류품 각각에 대응하는 예정된 스캔 지점까지 비행하여 해당 물류품에 부착된 상기 제품 정보 태그를 인식하기 위한 비행체; 및스캔 동작을 통해 상기 비행체로부터 전달되는 인식 정보와 기 저장된 관리 정보를 비교하여 상기 비행체의 스캔 지점을 재설정하기 위한 제어 시스템을 포함하는물류 창고 제어 시스템.
- 제11항에 있어서,물류 창고 내에 배치되며 상기 다수의 물류품을 적재하기 위한 예정된 크기의 선반을 더 포함하되,상기 선반에는 상기 선반 관련 정보를 제공해주기 위한 선반 정보 태그가 부착되는 것을 특징으로 하는물류 창고 제어 시스템.
- 제12항에 있어서,상기 선반 관련 정보는 상기 선반의 크기와 배치 방향을 포함하는 것을 특징으로 하는물류 창고 제어 시스템.
- 제12항에 있어서,상기 선반에는 상기 선반 관련 정보를 제공해주기 위한 다수의 선반 정보 태그가 상기 비행체의 경로 각각에 대응하는 위치에 부착되는 것을 특징으로 하는물류 창고 제어 시스템.
- 제11항에 있어서,상기 비행체에 탑재되며, 상기 제품 정보 태그를 인식하여 상기 제어 시스템에 제공해주기 위한 인식 장치; 및상기 비행체에 탑재되며, 상기 비행체의 위치를 기준으로 공간 거리를 측정하여 상기 제어 시스템에 제공해주기 위한 거리 측정 장치를 더 포함하는물류 창고 제어 시스템.
- 입고된 물류품의 수량을 체크하여 관리 정보로 저장하고 상기 물류품을 적재하는 단계;비행체를 상기 물류품의 예정된 스캔 지점에 대응하는 위치로 이동시키는 단계;상기 비행체의 스캔 동작을 통해 상기 물류품에 부착된 제품 정보 태그를 인식하여 인식 정보를 생성하는 단계; 및상기 관리 정보와 상기 인식 정보를 비교하여 상기 비행체의 스캔 지점을 재설정하는 단계를 포함하는물류 창고 제어 시스템의 동작 방법.
- 제16항에 있어서,상기 재설정하는 단계 이후 재작성된 인식 정보로 상기 관리 정보를 업데이트 하는 단계를 더 포함하는물류 창고 제어 시스템의 동작 방법.
- 제16항에 있어서,상기 관리 정보와 상기 인식 정보가 매칭되는 위치의 공간 정보를 최종 스캔 지점으로 설정하는 단계를 더 포함하는물류 창고 제어 시스템의 동작 방법.
- 제16항을 있어서,상기 다수의 물류품을 적재하기 위한 예정된 크기의 선반이 물류 창고 내에 배치되며, 상기 선반에는 상기 선반 관련 정보를 제공해주기 위한 선반 정보 태그가 부착되고,상기 비행체를 통해 상기 선반 정보 태그를 인식하고, 상기 선반 정보 태그에 대응하는 상기 선반 관련 정보와 상기 비행체의 공간 거리 정보를 통해 상기 물류 창고의 배치도를 생성하는 단계를 더 포함하는물류 창고 제어 시스템의 동작 방법.
- 제19항에 있어서,상기 선반 관련 정보는 상기 선반의 가로, 세로, 높이, 배치 방향을 포함하는 것을 특징으로 하는물류 창고 제어 시스템의 동작 방법.
- 제19항에 있어서,상기 배치도를 생성하는 단계는,상기 비행체의 공간 거리 정보를 통해 물류 창고의 일부 배치도를 생성하는 단계;개방된 통로가 형성된 방향으로 상기 비행체를 이동하는 단계; 및상기 선반 정보 태그를 인식하여 상기 배치도에 상기 선반을 도시하는 단계를 포함하는물류 창고 제어 시스템의 동작 방법.
- 제19항에 있어서,상기 재설정하는 단계는 상기 공간 거리 정보를 기준으로 예정된 범위를 비행하는 것을 특징으로 하는물류 창고 제어 시스템의 동작 방법.
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KR1020170166581A KR102067322B1 (ko) | 2017-12-06 | 2017-12-06 | 물류 창고 제어 시스템 |
KR1020170166579A KR101984026B1 (ko) | 2017-12-06 | 2017-12-06 | 물류 창고 관리 시스템 |
KR10-2017-0166581 | 2017-12-06 | ||
KR10-2017-0166579 | 2017-12-06 |
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