KR20090000108A - Distribution system and method using active and passive rfid tag - Google Patents

Abstract

A physical distribution management system and a method using the active and manual radio discriminating tag are provided to use two kinds of system of which the frequency is different. Accordingly, the physical distribution management system can be automated and perform the efficient physical distribution management through the real-time stock grasp and positioning. A physical distribution management system using an active and manual radio discriminating tag comprises one or more manual RFID(Radio Frequency Identification) reader(12), one or more active RFID reader(22), a manual RFID server(30), an activeness RFID server(40) and a synthesis administration server of physical distribution(50). The manual RFID reader recognizes clearly object identification code information data of the manual RFID tag adhered to each cargo loaded according to container. One or more active RFID reader records the information about each cargo in the corresponding active RFID tag. The manual RFID server manages the manual RFID server with the information collected through the one or more manual RFID reader. And the collected cargo information is transmitted from the manual RFID server. The synthesis administration server of physical distribution comprehensively manages the warehousing and delivery of each cargo. And the synthesis administration server traces and manages the location of the corresponding container in which the corresponding cargo is loaded in real time.

Description

Logistics management system using active and passive radio identification tag and its method {Distribution system and method using active and passive RFID tag}

1 is a configuration diagram of an embodiment of a logistics management system according to the present invention;

FIG. 2 is a diagram illustrating a process of using a passive radio identification (RFID) tag in a logistics management system according to the present invention; FIG.

3 is an exemplary diagram illustrating a process of using an active radio identification (RFID) tag in a logistics management system according to the present invention.

* Explanation of symbols on the main parts of the drawing

11: Passive RFID Tag 12: Passive RFID Reader

21: Active RFID Tag 22: Active RFID Reader

30: passive RFID server 40: active RFID server

50: comprehensive logistics management server

The present invention relates to a logistics management system using active and passive RFID tags, and a method thereof, and a computer-readable recording medium recording a program for realizing the method. More specifically, a logistics management system and method for real-time inventory detection, access control and location tracking of cargo using 2.4 GHz Active RFID and 900 MHz Passive RFID tags The present invention relates to a computer-readable recording medium having recorded thereon a program.

Radio Identification (RFID) systems incorporate the use of electromagnetic or electrostatic coupling within the radiofrequency of the electromagnetic spectrum portion to identify certain objects in the field of distribution and logistics. This RFID system is a technology that can replace the barcode, which is less likely to be damaged than the barcode, and can read multiple tags at the same time at high speed. Even if an obstacle exists, it can be read, read and written, and reused.

In addition, a low frequency RFID system (30KHz ~ 500KHz) is used in a short transmission area of about 1.8m or less, and a high frequency RFID system (850MHz ~ 950MHz and 2.4GHz ~ 2.5GHz) is used in a transmission area of a long distance of 27m or more. Inventory management, container / pallet / box management, automatic inspection, incoming / outgoing management, automatic sorting, rental goods management, counterfeit goods identification, anti-theft, cargo and goods tracking management.

For example, an RFID system includes an RFID tag attached to a predetermined article and storing information on the article, an antenna for transmitting and receiving the RFID tag and predetermined data, and an RFID tag communicating with the RFID tag through the antenna. An RFID reader for controlling the operation of the tag, and a host computer for collecting and managing data of the RFID tag provided by the RFID reader.

In other words, the RFID system includes a tag on the product that contains information about the entire process of production, distribution, storage, and consumption, or a reader to read the information and integrate it with the information system. It is used.

However, the conventional logistics distribution system records all the logistics by hand at the time of delivery and receipt, and processes them depending on the memory of the skilled worker. For example, it was difficult to obtain cargo information in advance by sending documents at the same time as shipping the container.In most cases, the cargo was grasped by the documents enclosed with the container. The work was done.

As described above, the conventional logistics distribution method is mostly made by hand, and thus the accuracy is low, and it takes a lot of time and difficult work to manage the inventory and access of the logistics.

Of course, there have been cases where RFID technology has been applied to the logistics distribution field. For example, in the case of the Air Force asset management system, a 900 MHz passive RFID tag is attached to each military material box, and an RFID reader is installed at the entrance of the warehouse to automatically record the entry and exit of the military material. Using this approach, however, it is possible to recognize each cargo in the warehouse, but it takes a lot of time to track the movement of the goods after the shipment to the container and to find a container containing the goods. In addition, when a 900 MHz passive RFID tag is attached to a container, there is a high possibility of interference with an RFID tag (900 MHz passive RFID tag) attached to each cargo.

The 2.4GHz active RFID tag is mainly used for tracking the location of an object, and is currently used for a Real Time Location System (RTLS) that is attached to an object or a person to locate it. The system uses the Time Difference Of Arrival (TDOA) method to locate each location. However, the system uses a battery for each RFID tag (2.4 GHz active RFID tag) and is expensive compared to a passive RFID tag (900 MHz passive RFID tag), making it unsuitable for use in each cargo.

Therefore, by using the advantages of both systems to compensate for the shortcomings, a 900MHz passive RFID tag is attached to individual cargo, and a 2.4GHz active RFID tag is attached to a container containing individual cargo, so that the contents of individual cargo contained in the container There is an urgent need for records to make it easier to find the required cargo and to provide real-time visibility of container movements.

The present invention has been proposed in order to meet the above requirements, it is possible to identify the real-time inventory through the entry and exit of the cargo by attaching the 900MHz passive RFID tag to each cargo, and attaching the 2.4GHz active RFID tag to the container It is an object of the present invention to provide a logistics management system and method for enabling real-time location tracking, and a computer-readable recording medium recording a program for realizing the method.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The present invention for achieving the above object, in the logistics management system, at least one passive RFID reader for recognizing object identification code information (EPC) data of the passive RFID tag attached to each cargo (article) to be loaded for each container ; At least one active RFID reader for recognizing object identification code information (EPC) data of an active RFID tag attached to each container in which each cargo is loaded, and recording information on each cargo loaded in each container in the corresponding active RFID tag; A passive RFID server for managing information (cargo information) for each cargo collected through the at least one passive RFID reader and transmitting the collected cargo information; Manages information on each container collected through the at least one active RFID reader, and receives information (cargo information) for each cargo loaded by container from the passive RFID server to the at least one active RFID reader An active RFID server for recording in the corresponding active RFID tag; And a comprehensive logistics management server for comprehensively managing the entry / exit of each cargo and tracking and managing the location of the container in which the cargo is loaded in real time when each cargo is moved.

On the other hand, the present invention, in the logistics management method, the object identification code information (EPC) of the passive RFID tag attached to each cargo (articles) shipped from the warehouse and loaded for each container through a passive RFID reader installed in one warehouse Recognizing data; When each cargo is moved, recording information (cargo information) of each cargo loaded by container by an active RFID reader installed at a starting point in an active RFID tag attached to each container in which the cargo is loaded; And tracking and managing the location of the container on which the cargo to be moved is loaded in real time through an active RFID reader installed at each of a starting point and a destination.

In addition, the present invention, through the passive RFID reader, characterized in that it further comprises the step of managing information for each cargo received in the warehouse.

In addition, the present invention is characterized in that the movement of each cargo, characterized in that further comprises the step of automatically notifying the destination of the information of the container and the information of the cargo loaded with the cargo.

On the other hand, the present invention, through the passive RFID reader installed in one warehouse in the logistics management system having a processor, the object identification of the passive RFID tag attached to each cargo (article) shipped from the warehouse and loaded for each container Recognizing code information (EPC) data; A function of recording information (cargo information) for each cargo loaded by container by an active RFID reader installed at a starting point in an active RFID tag attached to each container in which the corresponding cargo is loaded when each cargo is moved; And a computer readable recording medium having recorded thereon a program for realizing the function of tracking and managing the position of a container loaded with moving goods in real time through an active RFID reader installed at each of a starting point and a destination.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

According to the present invention, when a container with a 2.4 GHz active RFID tag arrives at a warehouse, when the goods are shipped and received with a 900 MHz passive RFID tag, the cargo is recognized and received through a 900 MHz passive RFID reader. Automatically determine whether or not, and after completing the operation, the 2.4.GHz active RFID tag attached to the container automatically records the contents of the cargo in the container, which reduces manual labor and automatically receives and releases goods. Then, when the finished container is moved to the next destination, the container is recognized by the 2.4.GHz active RFID reader as it passes through the front door of the warehouse, and the contents are notified to the next destination, enabling real-time tracking of cargo and containers. Inventory identification is automatic.

It is able to manage logistics location tracking and access at a low cost because it can recognize at 100m or more, a large storage memory, and high speed and high-speed data transmission, which is the characteristic of 2.4GHz active RFID tag. Inventory is automatically tracked for each shipment by attaching a cheap 900MHz passive RFID tag to each shipment.

Through the present invention, if the automation of the entire logistics distribution field is made, real-time inventory can be identified and the location of cargo and containers can be automatically determined, enabling efficient logistics management.

Next, a logistics management system using active and passive radio identification tags according to the present invention will be described with reference to FIGS. 1 to 3.

Referring to Figure 1, looking at the configuration of the logistics management system using the active and passive wireless identification tag according to the present invention, the passive RFID tag (900MHz passive RFID attached to each cargo) attached to each cargo (goods) loaded by container At least one passive RFID reader (900 MHz passive RFID reader) 12 for recognizing object identification code information (EPC) data of the tag (11 in FIG. 2), and an active RFID tag attached to each container in which cargo is loaded. Recognizes object identification code information (EPC) data of (2.4GHz active RFID tag attached to each container in which each cargo is loaded) (21 in FIG. 3), and corresponds to information (cargo information) for each cargo loaded in each container At least one active RFID reader (2.4 GHz active RFID reader) 22 for writing to an active RFID tag (2.4 GHz active RFID tag) 21, and at least one passive RFID reader (900 MHz passive RFID reader) 12 Each freight collected through Information management (cargo information) and through the passive RFID server (900MHz passive RFID server) 30 for transmitting the collected cargo information, and at least one active RFID reader (2.4GHz active RFID reader) 22 Manages information about each collected container (container information), at least one active RFID reader receives the information (cargo information) for each cargo loaded by container from the passive RFID server (900MHz passive RFID server) 30 An active RFID server (2.4 GHz active RFID server) 40 which is transmitted to the (2.4 GHz active RFID reader) 22 and recorded in the corresponding active RFID tag (2.4 GHz active RFID tag) 21; It includes a comprehensive logistics management server 50 for comprehensively managing the goods / delivery, and for tracking and managing the location of the container loaded with the cargo in real time when each cargo is moved.

Here, at least one passive RFID reader (900 MHz passive RFID reader) 12 is installed at each door of each warehouse where cargoes are entered / shipped.

At least one active RFID reader (2.4 GHz active RFID reader) 22 is provided at the starting point (for example, the front door) and the destination (for example, the front door) of each mobile cargo. Alternatively, at least one is provided at each of a starting point and a destination of each mobile cargo, and between a starting point and a destination, and when each cargo moves, information of a container loaded with the cargo and information of the cargo are automatically notified to the destination.

Accordingly, the comprehensive logistics management server 50 manages the receipt and release of each cargo by warehouse, and when each shipment is released, it manages each container in which the cargo is loaded, and an active RFID reader (2.4GHz active RFID reader) ( 22) can track and manage the location of the cargo and loaded containers in real time.

As such, the logistics management system using the active and passive radio identification tags according to the present invention can not only manage each cargo leaving the warehouse, but also manage the cargo entered into the warehouse.

In the above description, the passive RFID reader 12 in the 900 MHz band and the active RFID reader 22 in the 2.4 GHz band may be connected through a dedicated line or the Internet to exchange information with each other.

First, as shown in FIG. 2, after attaching the 900MHz passive RFID tag 11 to each cargo, it is loaded into the container through the 900MHz passive RFID reader 12 attached to the warehouse door. At this time, while loading the cargo in the container, the information of each cargo is automatically recorded through the 900MHz passive RFID reader 12 installed in the warehouse door, the contents of the individual cargo is automatically recorded on the 2.4GHz active RFID tag 21 do. As described above, the information of the cargo carried in the container is transmitted through a dedicated line or the Internet connected between the 900 MHz passive RFID reader 12 and the 2.4 GHz active RFID reader 22.

Then, after loading the cargo in the container, when the cargo vehicle loaded with the container passes through the front door with the 2.4GHz active RFID reader 22, as shown in Figure 3, the cargo information and the location of the vehicle (strictly 2.4GHz active) The position of the container to which the RFID tag 21 is attached) is transmitted to the next destination. At this time, the location of the vehicle is tracked while the freight vehicle is moving to its destination.

In addition, when the container is unloaded at the loading dock and the cargo position is desired, the 2.4GHz active RFID tag 21 attached to the container is read through the 2.4GHz active RFID reader 22 installed nearby. You will be able to identify the content and location.

For example, suppose you are shipping a shipment from origin A to destination B. At this time, there may be at least one warehouse at each of the starting point A and the destination B, and a plurality of cargoes are loaded for each warehouse. For convenience, suppose the warehouse at source A is warehouse A and the warehouse at destination B is warehouse B.

If the cargo in warehouse A is to be transported to warehouse B, the cargo is loaded into the container through the 900MHz passive RFID reader 12 attached to the door of warehouse A. At this time, a 900MHz passive RFID tag 11 is attached to each cargo transported from warehouse A to warehouse B.

At this time, while the cargo to be transported in the container, the information of the cargo is automatically recorded through the 900MHz passive RFID reader 12 installed in the door of the warehouse A, it is possible to grasp the cargo from the warehouse A in real time have. Of course, through the 900MHz passive RFID reader 12 installed at the door of the warehouse A can also be identified in real time cargo received in the warehouse A, it is possible to determine the real-time inventory of incoming and outgoing cargo.

Here, the contents of the individual cargo carried in the container are transmitted to the 2.4GHz active RFID reader 22 through a dedicated line or the Internet, and are automatically recorded on the 2.4GHz active RFID tag 21. If communication is impossible because the distance between the 2.4 GHz active RFID tag 21 and the reader 22 is too long, if the cargo vehicle equipped with the container enters the communication range of the 2.4 GHz active RFID reader 22, the corresponding communication In the region, the 2.4 GHz active RFID reader 22 may record the information of the cargo loaded in the container in the 2.4 GHz active RFID tag 21 attached to the container.

Thereafter, after the cargo is loaded into the container, when the cargo vehicle loaded with the container passes through the front gate of the departure point A having the 2.4 GHz active RFID reader 22, the cargo information loaded on the container and the 2.4 GHz active RFID tag 21 are attached. The information of the container is sent to the destination B. At this time, the position of the container is tracked in real time while the freight vehicle moves from origin A to destination B. However, for accurate location tracking, it may be preferable that a plurality of 2.4 GHz active RFID readers 22 are installed between the starting point A and the destination B. This is because the position of each cargo is managed in container units, and the current container position is tracked and managed through the 2.4 GHz active RFID reader 22.

Then, when the cargo vehicle arrives at the destination B, the 2.4GHz active RFID tag 21 is read through the 2.4GHz active RFID reader 22 installed at the front door of the destination B to check container information, and the cargo contained in the container is stored in the warehouse. The 900MHz passive RFID reader 12 installed at the door of B is received in warehouse B and managed at the same time as the warehouse B inventory.

Therefore, inventory of each cargo is automatically determined for each warehouse, and real-time location tracking of containers in transit is also possible.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention can not only promote automation of the logistics system by utilizing two systems with different frequencies, but also have the effect of efficient logistics management through real-time inventory and location.

Claims (15)

In the logistics management system, At least one passive RFID reader for recognizing object identification code information (EPC) data of a passive RFID tag attached to each cargo (article) loaded for each container; At least one active RFID reader for recognizing object identification code information (EPC) data of an active RFID tag attached to each container in which each cargo is loaded, and recording information on each cargo loaded in each container in the corresponding active RFID tag; A passive RFID server for managing information (cargo information) for each cargo collected through the at least one passive RFID reader and transmitting the collected cargo information; Manages information on each container collected through the at least one active RFID reader, and receives information (cargo information) for each cargo loaded by container from the passive RFID server to the at least one active RFID reader An active RFID server for recording in the corresponding active RFID tag; And Comprehensive management of incoming and outgoing shipments of each cargo, and a comprehensive logistics management server for tracking and managing the location of the container in which the cargo is loaded in real time when each cargo is moved. Logistics management system using an active and passive radio identification tag comprising a. The method of claim 1, The at least one active RFID reader, Logistics management system using an active and passive radio identification tag, characterized in that each installed at the starting and destination of the moving cargo. The method of claim 2, The comprehensive logistics management server, When each cargo moves, the logistics management system using active and passive radio identification tag, characterized in that it automatically informs the destination of the information and the information of the container on which the cargo is loaded. The method of claim 3, wherein The at least one active RFID reader, Logistics management system using an active and passive radio identification tag, characterized in that at least one at each of the starting and destination of each mobile cargo, and between the starting and destination. The method of claim 1, The at least one passive RFID reader, Logistics management system using active and passive wireless identification tag, characterized in that each cargo is installed at each door of the warehouse entry / exit. The method according to any one of claims 1 to 5, The active RFID tag, Logistics management system using an active and passive radio identification tag, characterized in that the 2.4GHz active RFID tag attached to each container in which cargo is loaded. The method of claim 6, The passive RFID tag, Logistics management system using active and passive radio identification tag, characterized in that 900MHz passive RFID tag attached to each cargo. The method of claim 7, wherein The comprehensive logistics management server, To manage the goods receipt and release of each cargo by warehouse, Logistics using active and passive radio identification tags that manage each shipment of each cargo at the time of shipment of the cargo, and track and manage the location of the cargo and the loaded container in real time through the active RFID reader. Management system. In the logistics management method, Recognizing object identification code information (EPC) data of a passive RFID tag attached to each cargo (article) shipped from the warehouse and loaded for each container through a passive RFID reader installed in one warehouse; When each cargo is moved, recording information (cargo information) of each cargo loaded by container by an active RFID reader installed at a starting point in an active RFID tag attached to each container in which the cargo is loaded; And Tracking and managing the location of a container loaded with moving cargo in real time through an active RFID reader installed at a starting point and a destination, respectively Logistics management system using an active and passive radio identification tag comprising a. The method of claim 9, Managing information on each cargo received in the work warehouse through the passive RFID reader Logistics management method using an active and passive radio identification tag further comprising. The method of claim 9, When each cargo is moved, automatically notifying the destination of the information of the container and the cargo in which the cargo is loaded. Logistics management method using an active and passive radio identification tag further comprising. The method of claim 9, The active RFID reader, Logistics management method using an active and passive radio identification tag, characterized in that at least one at each of the starting and destination of each mobile cargo, and between the starting and destination. The method of claim 9, The passive RFID reader, Logistics management method using the active and passive radio identification tag, characterized in that each cargo is installed at each door of the warehouse entry / exit. The method according to any one of claims 9 to 13, The active RFID tag is a 2.4GHz active RFID tag attached to each container in which the cargo is loaded, The passive RFID tag is a logistics management method using an active and passive radio identification tag, characterized in that the 900MHz passive RFID tag attached to each cargo. In the logistics management system with a processor, A function of recognizing object identification code information (EPC) data of a passive RFID tag attached to each cargo (article) shipped from the warehouse and loaded for each container through a passive RFID reader installed in one warehouse; A function of recording information (cargo information) for each cargo loaded by container by an active RFID reader installed at a starting point in an active RFID tag attached to each container in which the corresponding cargo is loaded when each cargo is moved; And Tracking and managing the location of containers loaded with moving cargo in real time through active RFID readers installed at the origin and destination A computer-readable recording medium having recorded thereon a program for realizing this.

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