JP2005190043A - Rfid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately execute the automatic reading of data in a cargo tracking system and the sorting of cargo by an automatic sorting machine by using an RFID instead of a bar code. <P>SOLUTION: This RFID is configured by arranging a first antenna 2 for executing short-range data transmission by the radio waves of a first frequency and a second antenna 5 for executing long-range data transmission by the radio waves of a second frequency on a sheet base material 1. A first IC chip module 3 is connected to the first antenna, and a second IC chip module 6 is connected to the second antenna. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an improvement in RFID that can read and write data without contact.

  In recent years, in the field of freight delivery, freight tracking systems that allow customers to easily track their own freight delivery status using a personal computer or mobile phone are becoming widespread as part of customer service (Patent Literature). 1 and 2). In this case, in general, the cargo to be delivered is collected from the shipper (handling store) to the departure store, transported from the departure store to the arrival store through a plurality of relay stores, and from the arrival store to the consignee. In order to track the cargo to be delivered, it will be unloaded from the collection vehicle at the departure store, and loaded into and received from the relay vehicle during transportation from the departure store to the relay store. Whenever unloading from the relay vehicle upon arrival at the store, loading onto the delivery vehicle at the arrival store, etc., the barcode of the delivery slip attached to the cargo is read by the barcode reader.

  In this way, the cargo is loaded and unloaded at least six to seven times before one cargo is delivered to the consignee, and the barcode is read each time. This bar code reading operation is very troublesome, and when the total number of cargoes to be delivered becomes enormous, the time, labor, and cost required for it will be immeasurable.

Therefore, instead of barcodes, RFID that can read and write data without contact is attached to a delivery slip affixed to the cargo, or directly attached to the cargo, and data is automatically input and output during cargo loading / unloading. It is possible.
In this case, the radio wave used in the conventional RFID has a frequency of 13.56 MHz and the reachable distance is about 90 cm at most. Therefore, the range in which data can be read from and written to the RFID is around the RFID. Limited to about 90 cm.
On the other hand, when RFID is used for freight tracking, it is most efficient to collect data on RFID when loading / unloading freight on a collection vehicle, a relay vehicle and a delivery vehicle (hereinafter referred to as “collection / delivery vehicle”). Read and write automatically. However, the cargo compartment opening of the pickup / delivery vehicle (truck) is about 1.7m to 2m wide and 1.9m to 2.1m in height, even if it is a standard one. An area in which reading and writing becomes impossible occurs, and when loading and unloading cargo into and from the collection and delivery vehicle, it is impossible to reliably read and write data with respect to the RFID, and thus the cargo tracking system cannot be accurately operated.

  For this reason, it is conceivable to read / write data from / to the RFID using radio waves having a longer reach distance that can cover the entire cargo compartment of the collection / delivery vehicle. By the way, assuming the sorting of the cargo by the automatic sorting machine at the departure and arrival stores, in this case, when the cargo transported on the conveyor line passes through the antenna gate, the RFID data provided in the cargo sequentially. However, if radio waves with a long reach distance are used, the data of the cargo behind the cargo to be read is read, and as a result, the order of the cargo to be transported and the reading order of the RFID data There is a risk of discrepancies and sorting errors.

Japanese Patent Laid-Open No. 11-79362 JP 2002-19924 A

  Therefore, an object of the present invention is to use RFID instead of a bar code to ensure that data is automatically read in a cargo tracking system and cargo is sorted by an automatic sorter.

  In order to solve the above-described problem, according to the present invention, in an RFID for reading and writing data in a non-contact manner, an antenna and an IC chip module connected to the antenna are provided on a sheet base material. From a first antenna for performing short-distance data transmission using radio waves of the first frequency and a second antenna for performing long-distance data transmission using radio waves of the second frequency, which are arranged independently of each other The IC chip module comprises a first IC chip module connected to the first antenna and a second IC chip module connected to the second antenna. Provided.

  According to a preferred embodiment of the present invention, the first frequency is 13.56 MHz, the second frequency is a UHF band frequency, and the first antenna is the sheet base material. It is preferable that the second antenna is disposed inside the first antenna in the sheet base material.

  According to the present invention, data reading / writing in a short-distance area and data reading / writing in a long-distance area can be performed separately using radio waves of a first frequency and radio waves of a second frequency, respectively. Therefore, when sorting cargo with an automatic sorter, short-distance data communication is performed using radio waves of the first frequency, and when reading and writing data when loading and unloading to a collection and delivery vehicle, remote radio waves of the second frequency are used. By performing distance data communication, it is possible to achieve reliable sorting of cargo by an automatic sorter and to accurately operate a cargo tracking system.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view of an RFID according to an embodiment of the present invention. Referring to FIG. 1, first and second antennas 2 and 5 independent of each other are provided on a sheet base material 1. The first IC chip module 3 is connected to the first antenna 2, and the second IC chip module 6 is connected to the second antenna 5.

The first antenna 2 includes a loop coil antenna disposed in the outer peripheral region of the sheet base material 1, and in the outer peripheral region of the sheet base material 1, the first antenna 2 spirals outward from the inner start end 4 a and then spirals. The coil 4 extends from the outer end 4b to the inner end 4c across each spiral loop at a right angle. In this embodiment, the first antenna 2 is formed by etching or printing, but the first antenna 1 can also be formed from a copper wire (copper winding coil).
The shape of the coil 4 is not limited to that of this embodiment, and instead of the rectangular coil, the coil 4 can be an elliptical coil or a circular coil, or can be a complex polygonal coil.
The first IC chip module 3 is electrically connected to the inner start end 4a and the inner end end 4c of the coil 4 with a conductive adhesive.

  In this embodiment, the second antenna 5 is formed of a copper wire, and is disposed on the inner side of the first antenna 2 in the sheet base 1, and is spaced from the linear portion 7 a and the linear portion 7 a by a distance d. The wing portions 7e and 7f each have a plurality of first rectangular wave-like portions 7b, and one wing portion 7f has a plurality of second rectangular wave-like portions. It has a portion 7c. The second IC chip module 6 (with a built-in package) is electrically connected to the base end portion 7d of the wing portions 7e and 7f.

  The first antenna 2 performs short-distance data transmission using radio waves of the first frequency (13.56 MHz in this embodiment), and the second antenna 5 transmits the second frequency (this embodiment). In this case, long-distance data transmission is performed using radio waves in the UHF band frequency, and data is read from and written to the first and second IC chip modules 3 and 6, respectively.

  Thus, according to the RFID of the present invention, reading and writing of data within a short-distance area (within about 90 cm) by radio waves of the first frequency (13.56 MHz) and radio waves of the second frequency (UHF band frequency). Data can be read and written independently within a long-distance area (within several meters).

  The RFID according to the present invention is incorporated into a delivery slip attached to the cargo to be delivered or directly attached to the cargo to be delivered. When sorting cargo by an automatic sorter, data communication is performed at a short distance to the RFID using radio waves of the first frequency, and when reading / writing data when loading / unloading to a collection / delivery vehicle, the second frequency is used. Data communication over a long distance with respect to RFID is performed by radio waves. As a result, in the former case, for the cargoes that are sequentially transported on the conveyor line, the data of the cargo behind the cargo to be read is read, and the order of the cargo to be transported and the reading order of the RFID data are determined. Conflicts are prevented and reliable automatic sorting of cargo is achieved. In the latter case, there is no area in the loading and unloading compartment where data cannot be read from or written to the RFID, and loading and unloading of cargo to and from the collection and delivery vehicle is prevented. Sometimes, data is read from and written to the RFID reliably, so that the cargo tracking system can be properly operated.

Furthermore, according to the RFID according to the present invention, it is possible to provide a data backup function by mounting two IC chip modules, so that one of the IC chip modules should be damaged and recorded data. Even when reading of the data becomes impossible, the data recorded in the other IC chip module can be read and used.
The field of application of RFID according to the present invention is not limited to the field of freight delivery as in the above-described embodiments, but data reading / writing in the short-distance area and data reading / writing in the long-distance area with respect to the RFID. It goes without saying that it is applicable to all fields that need to be switched and executed.

1 is a plan view of an RFID according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet | seat base material 2 1st antenna 3 1st IC chip module 4 Coil 5 2nd antenna 6 2nd IC chip module

Claims (3)

In RFID which reads and writes data in a non-contact manner provided with an antenna and an IC chip module connected to the antenna on a sheet base material,
A first antenna for performing short-range data transmission using radio waves of a first frequency and a second for performing long-distance data transmission using radio waves of a second frequency, wherein the antennas are arranged independently of each other. Wherein the IC chip module is composed of a first IC chip module connected to the first antenna and a second IC chip module connected to the second antenna. RFID. The RFID according to claim 1, wherein the first frequency is 13.56 MHz, and the second frequency is a frequency in a UHF band. The first antenna includes a loop coil antenna disposed in an outer peripheral region of the sheet base material, and the second antenna is disposed inside the first antenna of the sheet base material. The RFID according to claim 1, wherein the RFID is characterized.

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