WO2006070463A1

WO2006070463A1 - Vehicle status judging device, vehicle status judging method and vehicle status judging program

Info

Publication number: WO2006070463A1
Application number: PCT/JP2004/019619
Authority: WO
Inventors: Norihiro Nakamura; Takeshi Miki; Haruo Obana; Hideshi Numata
Original assignee: Fujitsu Limited; Ajinomoto Co., Inc.
Priority date: 2004-12-28
Filing date: 2004-12-28
Publication date: 2006-07-06
Also published as: JP4762157B2; JPWO2006070463A1

Abstract

Communication-related directivity is adjusted so as to allow communication with only RFID tags (1011-1047) in the same column/two lines out of RFID tags (1011-1047) attached in association with mutually adjacent racks (1111-1146) in two lines/multiple columns to detect RFID tags (1011-1047) in specified positions based on information received from the RFID tags (1011-1047) as the result of the adjustment, and, when the RFID tags (1011-1047) in the same column/two lines are detected, it is judged that a forklift (13) is kept facing racks (1111-1146).

Description

Specification

TECHNICAL FIELD The present invention relates to a vehicle state determination device, a vehicle state determination method, and a vehicle state determination program.

TECHNICAL FIELD [0001] The present invention relates to a vehicle state determination device, a vehicle state determination method, and a vehicle state determination program that determine the state of a load carrying vehicle that moves toward a predetermined luggage storage location among a plurality of luggage storage locations. , A vehicle state determination device that can efficiently determine the state of a luggage carrier that moves toward a luggage storage location that should store luggage without burdening the operator of the luggage carrier vehicle such as a forklift, vehicle The present invention relates to a state determination method and a vehicle state determination program.

Background art

In recent years, the commercialization of RFID (Radio Frequency Identification) tags has progressed, and RFID tags are becoming increasingly popular in the field of logistics and the like.

[0003] RFID tags, also called IC tags, store various data and perform radio wave communication with readers / writers that read and write data to / from RFID tags.

[0004] As a technology using such an RFID tag, an RFID tag is attached to a product rack, and a reader / writer communicates with the RFID tag, whereby a rack displaying a predetermined product is displayed. There is a detection technique (see, for example, Patent Document 1).

[0005] In the same way, when loading and unloading work in a warehouse, an R FID tag is attached to each rack where goods are loaded and unloaded, and the reader / writer provided on the forklift is placed between the RFID tag. It is possible to confirm whether or not it is a rack where goods should be loaded and unloaded by communicating with each other.

[0006] Patent Document 1: Japanese Patent Laid-Open No. 2001-116583

Disclosure of the invention

Problems to be solved by the invention

[0007] However, in the above-described prior art, when confirming whether or not the force is a rack for loading and unloading the load, the forklift operator must use the reader / writer and the RFI attached to the rack. It was necessary to adjust the direction of the forklift so that communication with the D tag could be performed reliably, and to confirm that the adjustment of the direction of the forklift was completed.

[0008] Specifically, the forklift operator communicates between the reader / writer and the RFID tag to determine whether or not the rack to which the RFID tag is attached is a rack into which goods are to be loaded and unloaded. Force that needs to be confirmed Since it is necessary to instruct the reader / writer to start communication after confirming that the adjustment of the direction of the forklift has been completed, there is a problem that the burden on the operator increases.

[0009] Therefore, how to efficiently determine the state of the forklift such as the direction of the forklift without imposing a burden on the forklift operator has become an important issue.

[0010] The present invention has been made to solve the above-described problems caused by the prior art and to solve the above-described problems. It is an object of the present invention to provide a vehicle state determination device, a vehicle state determination method, and a vehicle state determination program that can efficiently determine the state of a load transporting vehicle that moves toward a luggage storage location to be loaded and unloaded.

Means for solving the problem

[0011] In order to solve the above-described problems and achieve the object, the present invention provides a vehicle state determination device that determines the state of a load carrier vehicle that moves toward a predetermined load storage location among a plurality of load storage locations. The communication directivity is set so that communication is possible only with two RFID tags in the same column and two rows out of the RFID tags attached in association with the two-row, multiple-column adjacent baggage storage locations. The directivity adjusting means to adjust and the result of adjustment by the directivity adjusting means RFID tag force The tag detecting means for detecting the RFID tag at a predetermined position based on the received information and the tag detecting means are the same Vehicle state determination means for determining that the baggage carrying vehicle is in a state of facing the baggage storage location when two rows of RFID tags are detected.

[0012] In addition, the present invention is a vehicle state determination device for determining the state of a luggage transporter moving toward a predetermined luggage storage location among a plurality of luggage storage locations, A tag detection means for detecting an RFID tag at a predetermined position based on information transmitted by an RFID tag attached in association with a luggage storage location adjacent to the Vehicle state determination means for determining that the load carrying vehicle is moving toward a predetermined row when a plurality of RFID tags in a row are detected.

[0013] Further, the present invention is a vehicle state determination device that determines the state of a load transporting vehicle that moves toward a predetermined load storage location among a plurality of load storage locations, and includes two rows and a plurality of columns. When a plurality of RFID tags attached in association with baggage storage locations adjacent to each other constitute a block of the RFID tag, an RFID at a predetermined position is based on information transmitted by the RFID tag. When tag detection means for detecting a tag and two rows of RFID tags with two blocks facing each other are detected by the tag detection means, the load carrying vehicle is moving toward a predetermined column. Vehicle state determination means for determining that there is a vehicle.

[0014] In addition, the present invention is a vehicle state determination device for determining the state of a luggage transporter moving toward a predetermined luggage storage location among a plurality of luggage storage locations, When a plurality of RFID tags attached in association with baggage storage locations adjacent to each other constitute a block of the RFID tag, an RFID at a predetermined position is based on information transmitted by the RFID tag. Tag detection means for detecting a tag, and after detecting two rows of RFID tags facing each other by the tag detection means, the R FID tag in one row is not detected and the other row is detected. Vehicle state determination means for determining that the baggage carrying vehicle is in a state of changing direction so as to face a predetermined luggage storage location when two rows of RFID tags in the same block including It is characterized by having The

[0015] Also, in the present invention according to the present invention, the tag detection unit includes a RFID tag at a predetermined position based on the position information transmitted by the RFID tag that stores the position information related to the RFID tag. It is characterized by performing detection.

[0016] The present invention further includes a database that stores identification information for identifying an RFID tag in association with position information related to the RFID tag according to the above invention. When the RFID tag power storing the identification information also receives the identification information, the output means detects the RFID tag at a predetermined position by referring to the database.

[0017] Further, the present invention is a vehicle state determination method for determining the state of a load transporting vehicle that moves toward a predetermined load storage place among a plurality of load storage places, A directivity adjustment step for adjusting the directivity related to communication so as to enable communication with only RFID tags in two rows of the same column among the RFID tags attached in association with the baggage storage locations adjacent to each other, and the directivity adjustment As a result of adjustment by the process RFID tag force Based on the received information, the tag detection process for detecting the RFID tag at the predetermined position V, and the RFID tag in the same column and 2 rows was detected by the tag detection process In this case, it is characterized in that it includes a vehicle state determination step for determining that the baggage transport vehicle is in a state of facing the baggage storage location.

[0018] Further, the present invention is a vehicle state determination program for determining a state of a load transporting vehicle that moves toward a predetermined load storage location among a plurality of load storage locations, and is adjacent to each other in two rows and multiple columns. A directivity adjustment procedure for adjusting the directivity related to communication so that communication can be performed only with the RFID tags in the same column and two rows of the RFID tags attached to the matching luggage storage locations, and the directivity adjustment As a result of adjustment according to the procedure RFID tag force When a tag detection procedure for detecting an RFID tag at a predetermined position based on the received information and two rows of RFID tags in the same column are detected by the tag detection procedure And a vehicle state determination procedure for determining that the baggage transporting vehicle is in a state of facing the baggage storage location.

The invention's effect

[0019] According to the present invention, communication is performed so that communication is possible only with RFID tags in two rows of the same column among RFID tags attached in association with adjacent luggage storage locations in two rows and multiple columns. As a result of adjusting the directivity, RFID tag force Based on the received information, the RFID tag at a predetermined position is detected, and when RFID tags in two rows in the same row are detected, the package Since it is determined that the transport vehicle is in a state where it faces the luggage storage location, the load transport vehicle that does not place a burden on the operator of the load transport vehicle collects the load. If it is possible to determine the force or failure force facing the delivery location with high accuracy and efficiency, there is an effect.

[0020] Further, according to the present invention, the two-row, multiple-column adjacent storage locations are attached in association with each other and are in a predetermined position based on information transmitted by the RFID tag. When the RFI D tag is detected and a plurality of RFID tags in the outermost row are detected, it is determined that the baggage transporting vehicle is moving toward a predetermined row. Thus, it is possible to efficiently determine the force / force of the load carrying vehicle moving toward a predetermined line without burdening the pilot.

[0021] Further, according to the present invention, when a plurality of RFID tags attached in association with adjacent storage locations in two rows and multiple columns constitute an RFID tag block! / Based on the information transmitted by the RFID tag! / Detect the RFID tag at a predetermined position ヽ If two rows of RFID tags facing two blocks are detected, a predetermined tag is detected. Since it was determined that the baggage transport vehicle was moving toward the line, the load transport vehicle moved toward the predetermined line without imposing a burden on the operator of the load transport vehicle. There is an effect that it is possible to efficiently determine whether or not the force is negative.

[0022] Further, according to the present invention, when a plurality of RFID tags attached in association with adjacent storage locations in two rows and multiple columns constitute an RFID tag block! / Based on the information transmitted by the RFID tag! / Detects the RFID tag at a predetermined position 後 After detecting the two rows of RFID tags facing each other, one row If the RFI D tag is no longer detected and two rows of RFID tags in the same block, including the other row, are detected, the load carrying vehicle is changing direction so that it faces the specified baggage storage location. Therefore, it is possible to efficiently determine whether or not the load carrying vehicle facing the predetermined baggage storage location is executing without changing the load on the operator of the load carrying vehicle. There is an effect that it can be determined.

[0023] Further, according to the present invention, detection of an RFID tag at a predetermined position is performed based on the position information transmitted by the RFID tag storing the position information related to the own RFID tag! Therefore, by using the position information stored in the RFID tag, there is an effect that the RFID tag at a predetermined position can be efficiently detected. [0024] Further, according to the present invention, when the identification information is received from the RFID tag storing the identification information for identifying the RFID tag, the identification information and the positional information related to the RFID tag are stored in association with each other. Since the RFID tag at a predetermined position is detected by referring to the database, storing the position information in the database eliminates the need for the RFI D tag to store the position information. There is an effect that the capacity can be reduced.

Brief Description of Drawings

FIG. 1 is a diagram for explaining the concept of a vehicle state determination process according to the present embodiment.

FIG. 2 is a diagram illustrating a functional configuration of the vehicle state determination device 40 according to the present embodiment.

[FIG. 3-1] FIG. 3-1 is a flowchart (1) showing the processing procedure of the vehicle state determination processing according to the present embodiment.

[FIG. 3-2] FIG. 3-2 is a flowchart (2) showing a processing procedure of the vehicle state determination processing according to the present embodiment.

FIG. 4 is a diagram showing a hardware configuration of a computer that becomes the vehicle state determination device 40 shown in FIG. 2.

Explanation of symbols

[0026] 10

11 1 10 20-20 RFID tag

47 1 n

11 11

11 one rack

46

12, 12 blocks

1 2

13 Forklift

14, 30 Reader 'Writer

16, 16 Communication range

1 2

15, 40 Vehicle status judgment device

41 Input section

42 Display

43 Memory

43a RFID tag position information

43b Luggage entry / exit rack information 43c Baggage entry / exit information

44 Reader / Writer Control Unit

45 RFID tag detector

46 Vehicle state determination unit

47 Abnormality judgment section

48 Entry / Exit Management Department

49 Control unit

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of a vehicle state determination device, a vehicle state determination method, and a vehicle state determination program according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Example

First, the concept of the vehicle state determination process according to the present embodiment will be described. FIG. 1 is a diagram for explaining the concept of the vehicle state determination process according to the present embodiment. In the example shown in Fig. 1, two rows and six columns of racks are loaded and unloaded by the forklift 13.

11 1 11 Power 2 Configure 46 blocks 12 and 12.

1 2

[0029] In addition, the vehicle state determination device 15 that is mounted on the forklift 13 and determines the state of the forklift 13 is provided with a rack 11 for loading and unloading luggage.

11 1 11

46

Yes. In the example shown in FIG.

22 is set as a rack for loading and unloading packages.

[0030] Further, each block 12

Racks 1 and 12 11

2 11 1 11

46

10 10 is installed. This RFID tag 10 10 has each RFID tag 10

11 47 11 47

The identification information for identifying one is stored.

11 47

[0031] Then, the forklift 13 communicates with the RFID tag 10 10 so that the RFI

11 47

Reader / writer 14 that reads identification information from D tag 10-10 and the above-mentioned vehicle condition determination

11 47

Device 15 is installed.

[0032] Here, the RFID tag 10-10 is attached to the vehicle state determination device 15 in advance.

11 Remember the 47th position (column and row). And the reader / writer 14 is the RFID tag 10 — When the identification information is also read, the vehicle state determination device 15

47 11

Read the mounting position corresponding to the 10 identification information.

47

[0033] When the forklift 13 performs loading / unloading of the luggage with respect to the racks 11 and 11,

11 46

The writer 14 can detect multiple blocks 12 10

1, 12 RFID tags

2 11 47

Directivity by adjusting the radio field strength and antenna so that the communication range is 16

1

To control.

[0034] Then, when the reader / writer 14 performs communication, the vehicle state determination device 15 detects a plurality of RFID tags 10, 10, 10, 10 in the outermost rows of the blocks 12, 12, load

1 2 17 27 37 47

Racks for loading and unloading goods 11 Blocks with 11 1 12 Forklift 1

11 46 For rows 1 and 12

2

It is determined that 3 is moving (state 1).

[0035] Here, the RFID tag corresponding to the rack 11 1 11 for loading and unloading the luggage 10 — 10

When the forklift 13 passes the line 11 46 11 47, the vehicle state determination device 15 outputs a warning message and notifies the operator of the forklift 13.

[0036] Further, the vehicle state determination device 15 is configured so that the reader / writer 14 communicates, and the RFID tags 10 — 10, 10 — 10 in two rows in which two adjacent blocks 12, 12 face each other are communicated.

If 1 2 21 27 31 37 is detected, the rack for loading / unloading the luggage 11, 11

21 1 11

26 31 One 11

36

It is determined that the forklift 13 is moving between the blocks 12 and 12 (state 2).

1 2

[0037] Here, if the detected RFID tag 10 10

21 27, 10

31 1 10 2 rows into the luggage 37

If the rack does not correspond to the 11th and 11th 11th rows,

21 26 31 36

The state determination device 15 outputs a warning message and notifies the operator of the forklift 13.

[0038] In addition, if the RFID tag 10 — 10 corresponding to the rack 11 1 11 for loading and unloading luggage

When the forklift 13 passes the 21 36 11 47 row, the vehicle state determination device 15 outputs a warning message and notifies the operator of the forklift 13.

[0039] It is to be noted that the rack for storing and unloading the luggage is the rack 11 on the outermost side of the plurality of blocks 12 and 12.

In the case of 1 2 11 1 11, 11 1 11, the vehicle state determination device 15 is connected to the rack 11 1 11, 1

16 41 46 11 16

1 When RFID tags 10-10, 10-10, attached to 11 are detected,

41 46 11 17 41 47

Forklift 13 toward the row with racks 11 1 11, 11 1 11

11 16 41 46

Is determined to be moving. [0040] Also, two adjacent blocks 12, 12 facing two rows of RFID tags 10 — 10

1 2 21 27

, 10-10 is detected, then RFID tag 10-10, 10-10 in one row is detected

31 37 21 27 31 37 The RFID tag 10 — 10, 10 — 10 in the other row

21 27 31 37

When RFID tags 10-10, 10-10 are detected

1 2 11 17 41 47

The vehicle condition judging device 15 is a rack 11 for loading and unloading luggage.

11 facing directly toward 11 46

It is determined that the forklift 13 is performing a change of direction (state 3).

[0041] It should be noted that the rack for loading / unloading the luggage is the outermost rack of the plurality of blocks 12, 12.

1 2 11 1 11, 11 1 11, RFID in the row with racks 11 1 11, 11 1 11

16 41 46 11 16 41 46

RFID tags 10 10 and 10 one 10 and another row of the same block 12 and 12 RFID tags 10

11 17 41 47 1 2

When the vehicle state determination device 15

21 one 10, 10

27 31 1 10

37

Rack for one clift 13 to load and unload luggage 11 1, 11

11 one 1

16 41 1 11

46

It is determined that the direction change is being executed.

[0042] Here, if a rack for loading and unloading luggage 11 corresponding RFID tag 10 — 10

21 against 11

If the forklift 13 changes direction in a direction different from the line of 36 11 47, the vehicle state determination device 15 outputs a warning message and notifies the operator of the forklift 13.

[0043] When the direction change is completed, the reader / writer 14 moves 2 in the same row in the same blocks 12 and 12.

1 2

To ensure a communication range of 16 that can only communicate with two RFID tags 10-10

11 47 2

The directivity is controlled by adjusting the wave intensity and the antenna. For example, in the example in Fig. 1, if the depth of the communication range 16 is about 6 m, the communication range 16 is 2.5-3.

1 Adjust to about 2 m.

[0044] Then, the vehicle state determination device 15 is configured to directly face the same row 2 in the same block 12, 12.

1 2

When one RFID tag 10-10 is detected for a certain period of time, the forklift 13 is loaded.

11 47

It is determined that the rack 11 to which the goods are loaded / unloaded is directly facing 11 (11).

11 46

[0045] Here, if a rack for loading and unloading luggage 11 corresponding RFID tag 10 10

11 vs 11

46 11 If the RFID tag 10-10 in a different row from 47 is detected, the vehicle condition determination device 15

11 47

A warning message is output and the operator of the forklift 13 is notified.

[0046] The forklift 13 receives and loads the rack 11

11 One-sided to 11 11

If it is determined, the vehicle condition determination device 15 has the rack 11 1 11 for loading / unloading the luggage. Rack for loading and unloading luggage 11

11 1 11 is processed to determine whether or not the rack 1 46

1 When 11 is 11 and 11 is a rack 11 11 when loading and unloading packages, loading and unloading packages is executed

11 46 11 46

The

Thus, in the present invention, the vehicle state determination device 15 includes a plurality of racks 11 11

11 One 46 RFID tags attached to 46 10 — Receive information sent by 10 and receive information

11 47

The position of the received RFID tag 10 10 is detected, and each detected RFID tag 10

11 47 11 1 Moves toward a given rack 11 1 11 based on information on the position of 10

47 11 45

Since it is decided to determine the condition of one lift 13, the rack to load and unload the luggage without burdening the operator of the forklift 13 11

11 1 11

Forklift moving towards 46 1

The state of 3 can be determined efficiently.

Next, a functional configuration of the vehicle state determination device according to the present embodiment will be described. FIG. 2 is a diagram illustrating a functional configuration of the vehicle state determination device 40 according to the present embodiment. This vehicle state determination device 40 corresponds to the vehicle state determination device 15 shown in FIG. As shown in FIG. 2, the vehicle state determination device 40 is connected to a reader / writer 30.

[0049] The reader / writer 30 performs radio wave communication with the RFID tag 20-20, and the RFID tag 2

1 n

It is a device that reads the information stored in 0-20. Specifically, the reader / writer 30

1 n

RFID tag 20 20 force Read ID information 21 21 stored in RFID tag 20 20

Take 1 n 1 n 1 n. The information 21-21 is identification information for identifying each RFID tag 20-20.

1 n 1 n

[0050] This RFID tag 20 20 corresponds to the RFID tag 10 10 shown in FIG.

I n 11 47

The The reader / writer 30 corresponds to the reader / writer 14 shown in FIG.

[0051] The vehicle state determination device 40 is a device mounted on the forklift 13, and a rack 11 for loading and unloading luggage.

11 Determine the state of the forklift 13 moving toward 11 and enter the load.

When the forklift 13 is in a state of facing the rack 11 to 11

11 46

11 1 11 is a device for checking whether or not 11 11 is a rack for loading and unloading packages

11 46 11 46

[0052] The vehicle state determination device 40 includes an input unit 41, a display unit 42, a storage unit 43, a reader / writer control unit 44, an RFID tag detection unit 45, a vehicle state determination unit 46, an abnormality determination unit 47, an entry / exit It has a management unit 48 and a control unit 49. [0053] The input unit 41 is an input device such as a keyboard, a button, or a switch. The display unit 42 is a display device such as a display device. The storage unit 43 is a storage device such as a hard disk device.

[0054] The storage unit 43 stores RFID tag position information 43a, luggage entry / exit rack information 43b, and luggage entry / exit information 43c. RFID tag location information 43a

11 one

11 is the position information of each RFID tag 20 20 attached to 11.

46 1 n

[0055] Specifically, when the RFID tags 20 20 are attached in a matrix of M rows and N columns,

1 n

Each RFID tag 20 20 ID information 21 21 and RFID tag 20 20 rows and columns

1 n 1 n 1 n

Are stored in association with each other.

[0056] Luggage loading / unloading rack information 43b is used to identify the rack for loading / unloading the luggage.

11 Identify 1 11 46

Information. Specifically, the baggage loading / unloading rack information 43b is information on the rows and columns of the RFID tags 20-20 corresponding to the racks 11 11 for loading / unloading the packages.

11 1 46 I n

[0057] The luggage entry / exit rack information 43b is stored in an RFID tag attached to the luggage, and the RFID tag power is also read and stored by the reader / writer 30.

[0058] Luggage entry / exit information 43c is the rack when the luggage is entered / exited 11

11 1 11 information and load 46

This stores information related to the loading / unloading of luggage such as information on the date and time when the goods are loaded / unloaded.

[0059] The reader / writer control unit 44 is performed by the reader / writer 30 with the RFID tags 20-20.

1 n

Control radio communications. Specifically, the reader / writer control unit 44 controls the timing at which the reader / writer 30 transmits radio waves to the R FID tag 20-20,

1 n

The directivity of the reader / writer 30 is controlled by adjusting the antenna.

[0060] The RFID tag detection unit 45 detects the ID information received by the reader / writer 30 as well as the RFID tag 20-20.

1 n

Information 21—21 is received via the reader / writer controller 44, and HD information 21—21 is received.

1 n 1 n Performs processing for detecting the RFID tag 20 20 at a predetermined position.

1 n

[0061] Specifically, the RFID tag detection unit 45 reads the RFID tag position information 43a from the storage unit 43, and acquires the row and column information of the RFID tag 20-20 corresponding to the HD information 21-21.

1 n 1 n

As a result, the RFID tag 20-20 in a predetermined position is detected.

1 n

[0062] The vehicle state determination unit 46 is a vehicle that moves toward the racks 11 to 11 for loading and unloading luggage. Determine the status of one clift 13. Specifically, based on the information on the rows and columns of the RFID tags 20-20 detected by the RFID tag detection unit 45, as shown in FIG.

1 n

In the movement of rack 11 where one clift 13 moves in and out,

11 to 11

46

It is determined whether it is in a state like this.

[0063] As described with reference to FIG. 1, the abnormality determination unit 47 causes the forklift 13 to pass through the blocks 12 and 12 where the racks 11 and 11 for loading and unloading the luggage are included, and the rack 1 for loading and unloading the luggage.

11 46 1 2

1 Warning message when facing a different row or column than 11 rows or columns

11 46

Is output to the display unit 42 and the operator of the forklift 13 is notified of it.

[0064] When the vehicle state determination unit 46 determines that the forklift 13 is directly facing the rack 11 11 where the baggage is loaded / unloaded, the loading / unloading management unit 48 starts the loading / unloading of the baggage.

11 46

The baggage entry / exit processing is executed.

[0065] Specifically, the loading / unloading management unit 48 uses the rack 11 for loading / unloading luggage.

11 attached to 11 11

Communicated with the RFID tag 20 20 and stored in the storage unit 43b

I n

Luggage entry / exit rack information 43b is compared with information received with RFID tag 20-20.

1 n

[0066] Then, the entry / exit management unit 48 uses the luggage entry / exit rack information 43b and the RFID tag 20-20.

1 n Based on whether or not the received information matches the rack 11

Check whether 11-11 is a rack 11-11 to load / unload luggage 46 and check the information related to loading / unloading work.

II 46

The information is stored in the storage unit 43 as package entry / exit information 43c.

[0067] The control unit 49 is a control unit that controls the entire vehicle state determination device 40, and controls data exchange between the functional units.

Next, the processing procedure of the vehicle state determination processing according to the present embodiment will be described. FIGS. 3A and 3B are flowcharts (1) and (2) showing the processing procedure of the vehicle state determination process according to the present embodiment.

[0069] As shown in FIG. 3-1, first, the RFID tag detection unit 45 of the vehicle state determination device 40 reads the RFID tag position information 43a stored in the storage unit 43 (step S101). In addition, the RFI D tag detection unit 45 reads the luggage entry / exit rack information 43b stored in the storage unit 43 (step S102).

Then, the reader / writer control unit 44, as described in FIG. 1, has a plurality of blocks 12, 12. RFID tag 10 — Adjust the directivity of reader / writer 30 to detect 10

11 47

(Step S103).

[0071] Thereafter, the RFID tag detector 45 detects the RFID tags 10 in the outermost row of the blocks 12 and 12 in a plurality of rows.

1 2

, 10, 10 and 10 are examined by the reader / writer 30 (step S104).

17 27 37 47

[0072] Then, the reader / writer 30 detects the RFID tags 10, 10, 10, 10 in the outermost row and the plurality of rows.

17 27 37 47

If not (step S104, No), go back to step S104 again and block 12

1, 1

Reader / writer 30 detected RFID tags 10, 10, 10, 10 in the outermost row of multiple rows 2

2 17 27 37 47

Check whether or not.

[0073] When the reader / writer 30 detects the RFID tags 10, 10, 10, 10 in the outermost row and multiple rows

17 27 37 47

If this is the case (Step S104, Yes), the vehicle state determination unit 46 will check that the forklift 13 is the rack 11 for loading and unloading the luggage.

11 It is judged that it is moving toward blocks 12 and 12 with 11 rows. 46 1 2

(Step S105), a message indicating that the movement is in progress is output (Step S106).

[0074] Then, the abnormality determination unit 47 stores the rack 11 for loading / unloading the luggage.

11 One 11 has a target line 46

It is checked whether or not the oak lift 13 has passed (step S107). If the oak lift 13 passes the target line (step S107, Yes), a warning message is output (step S112). The subsequent processing is continued.

[0075] When the forklift 13 does not pass through the target row (step S107, No), the RF ID tag detection unit 45 detects the two rows of RFID tags facing each other in the two blocks 12 and 12 adjacent to each other.

1 2

It is checked whether or not 10-10 and 10-10 have been detected (step S108).

21 27 31 37

[0076] And if the RFID tags 10-10, 10-10 in the two rows are not detected (

21 27 31 37

(Step S108, No), because it is determined that the block 12 or 12 has not been entered yet.

1 2

The process proceeds to step S104, and the subsequent processing is continued.

[0077] When two RFID tags 10 — 10 and 10 — 10 are detected (Step S 108).

21 27 31 37

, Yes), the vehicle condition determination unit 46 is a rack in which the forklift 13 loads and unloads luggage 11 1 1

twenty one

It is determined that 1 is approaching blocks 12 and 12 toward a certain row (step S109), and the process proceeds.

36 1 2

A message indicating that it is being entered is output (step S110).

[0078] In the above procedure, all the racks for loading / unloading the luggage are 11 11 The last row of racks 11

11 1 11, 11

16 41 Explains cases that are not 11

46

Force If it is the rack 11 11, 11 11, the endmost RFID

11 16 41 46

Tags 10 — 10, 10

17 41 Rack for loading and unloading luggage when multiple 10 are detected 11

11 47 11

11, 11 1 11 Powerful 歹 Advancing to IJ forklift 13 car block 12, 12

16 41 46 1 2 Judged to be present.

[0079] After step S110, the abnormality determination unit 47 determines that the blocks 12 and 12 that have entered the two facing each other.

1 2

A rack in which one of the rows in and out of the luggage 11

11 1 11 is a certain line or not 46

(Step S111).

[0080] If either of the two lines is not the target line (step S111, No), the abnormality determination unit 47 outputs a warning message (step S113), and the forklift 13 is connected to the block 12, 12 To go outside, go to step S104 and continue the subsequent processing.

1 2

[0081] If either of the two rows is the target row (step S111, Yes), as shown in Fig. 3-2, the abnormality determination unit 47 sets the rack 11 for loading / unloading the package.

21 One 11 has a purpose 36

It is checked whether or not the forklift 13 has passed through the row (step S114).

[0082] If the target column is passed (step S114, Yes), the abnormality determination unit 47 outputs a warning message to the display unit 42 (step S125), and proceeds to step S108. The subsequent processing is continued.

[0083] If the target column has not been passed (step S 114, No), the RFID tag detection unit 45 detects that one of the RFID tags 10 — 10 and 10 — 10 in two rows 10 - Ten

21 27 31 37 21 27

, 10 One 10 is no longer detected, RFID tags in two rows of the same block 12, 12 10

31 37 1 2 11 It is checked whether the force has come to detect 1 (step S115).

47

[0084] And the same block 12

RFID tag 10 2 in two rows 1 and 12 is not detected 2 11 47

In such a case (step S115, No), the forklift 13 searches for the target column again, so that the process proceeds to step S108 and the subsequent processing is continued.

[0085] When two RFID tags 10 to 10 in the same block 12 and 12 are detected,

1 2 11 47

S115, Yes), the vehicle condition determination unit 46 prepares the rack 11 for loading and unloading the luggage when the forklift 13 changes direction.

21 1 11 face up to a row

36

(Step S116) and output a message indicating that preparation is in progress (step S116). Step SI 17).

[0086] After that, the abnormality determination unit 47 detects the rack in which the line of the rack 11 1 11 that directly faces is loaded and unloaded.

21 36

Rack 11 to determine whether or not the force is in line 11 (step S118), and to load / unload the package 1

21 36

1 If the line is not 11 (step S118, No), a warning message is displayed on display 42.

21 36

(Step S126), the process proceeds to step S115, and the subsequent processing is continued.

[0087] Directly facing rack 11

21 11 11 Racks for loading and unloading luggage 11

36 21 1 11

36

If this is the case (step S118, Yes), the reader / writer control unit 44 makes the same block 12

To enable communication only between two RFID tags 10 10 in the same row in 1 and 12, 2

11 47

Reduce the directivity of the writer 30 (step S119).

[0088] Thereafter, the RFID tag detection unit 45 includes two RFID tags in the same row of the same blocks 12 and 12.

1 2

It is checked whether or not 10-10 has been detected for a predetermined time or more (step S120).

11 47

[0089] And the same block 12

1 and 12 two RFID tags in the same row 10 10 for a certain time 2 11 47

If the force is not detected (step S120, No), the forklift 13 again searches for the target rack 11-11, so the process proceeds to step S115, and the subsequent processing is continued.

21 36

Continue.

[0090] Two RFID tags 10-10 in the same row of the same block 12 and 12 are detected for a certain time or more

1 2 11 47

If this occurs (step S120, Yes), the vehicle state determination unit 46 determines that the forklift 13 has faced the rack 11-11 (step S121), and a message indicating that it has faced.

21 36

Is output to the display unit 42 (step S122).

[0091] Then, the anomaly detection unit 47 is a rack for loading and unloading the rack 11-line force luggage that is directly facing.

21 of 11

36

11 Check whether the target column is one of 11 (step S123).

11 46

In the case (step S123, No), a warning message is output to the display unit 42 (step S127), the process proceeds to step S118, and the subsequent processing is continued.

[0092] If the 11th and 11th rows of the racks 11 to 11 are the target row (Step S123, Yes)

21 36, the entry / exit management unit 48 executes the entry / exit processing of the package (step S 124), and ends this vehicle state determination processing.

In this embodiment, the ID information read by the reader / writer 30 is also used for the RFID tag 20-20.

1 n

Information and the RFID tag position information stored in the vehicle state determination device 40. 0-1 Force to detect 20 positions The present invention is not limited to this.

1 n

The location information is stored in each RFID tag 20-20, and the reader / writer 30

1 n

The position of the RFID tag 20-20 may be detected by reading the information.

1 n

The various processes described in the above embodiments can be realized by executing a program prepared in advance with a computer. Therefore, in the following, an example of a computer that executes a program that realizes the various processes will be described with reference to FIG. FIG. 4 is a diagram showing a hardware configuration of a computer that becomes the vehicle state determination device 40 shown in FIG.

[0095] This computer has an input device 100 that accepts data input from a user, a motor 101, a RAM (Random Access Memory) 102, a ROM (Read Only Memory) 103, and a recording medium that records various programs. Recording medium reader 10 4 for reading, network interface 105 for transferring data to and from other computers via the network, CPU (Central Processing Unit) 106 and HDD (Hard Disk Drive) 107 are connected via bus 108 Composed.

[0096] Then, HDD 107 stores a program that exhibits the same function as that of vehicle state determination device 40, that is, vehicle state determination program 107d shown in FIG. Note that the vehicle state determination program 107d may be distributed and stored as appropriate.

Then, the CPU 106 reads out the vehicle state determination program 107d from the HDD 107 and executes it, thereby functioning as the vehicle state determination process 106a. This vehicle state determination process 106a realizes each function of the vehicle state determination device 40 shown in FIG.

[0098] In addition, RFID tag position information 107a, luggage entry / exit rack information 107b, and luggage entry / exit information 107c are stored in the HDD 107. The RFID tag position information 107a, the luggage entry / exit rack information 107b, and the luggage entry / exit information 107c correspond to the RFID tag position information 43a, the luggage entry / exit rack information 43b, and the luggage entry / exit information 43c shown in FIG.

[0099] Then, the CPU 106 stores the RFID tag position information 107a, the baggage loading / unloading rack information 107b, and the baggage loading / unloading information 107c in the HDD 107, and the RFID tag position information 107a, the baggage loading / unloading rack information 107b, and the baggage loading / unloading information 107c. Read out information 107c from HDD107 The data is stored in the RAM 102, and various data processing is executed based on the RFID tag position information 102a, the baggage loading / unloading rack information 102b, and the baggage loading / unloading information 102c stored in the RAM102.

[0100] By the way, the vehicle condition determination program 107d does not necessarily need to store the initial force in the HDD 107 as well. For example, a “portable physical medium” such as a flexible disk (FD), CD-ROM, MO disk, DVD disk, magneto-optical disk, or IC card inserted into a computer, or a hard disk drive installed inside or outside the computer ( Store each program in a “fixed physical medium” such as HD D), or in “another computer (or server)” connected to the computer via a public line, the Internet, LAN, WAN, etc. Make sure that the computer reads and executes each program.

[0101] As described above, in the present embodiment, the reader / writer control unit 44 of the vehicle state determination device 40 is attached to the racks 11 adjacent to each other in 4 rows, 2 rows and multiple columns.

11 1 11

46

Communication is possible only with RFID tags 10 10 in the same column and 2 rows of RFID tags 10 10

11 47 11 47 The RFID tag detection unit 45 adjusts the directivity for communication so that the RFID tag 10

11 1 10 power RFID tag 10 — 10 47 11 47 is detected based on the received information, and RFID tag 10 — 10 in the same row and 2 rows is detected by RFID tag detector 45.

11 47 When the vehicle is released, the vehicle condition determination unit 46

11 Because it was determined that it was facing 46 to 11, it is highly accurate whether the forklift 13 facing the rack 11 1 11 without burdening the operator of the forklift 13 is highly accurate. Effective

11 46

Semi-U can be determined efficiently.

[0102] Further, in this embodiment, the RFID tag detection unit 45 is transmitted by the RFID tag RFID tag 10-10 attached in association with racks 11 1 11 adjacent to each other in two rows and multiple columns.

11 46 11 47 Based on the detected information, the RFID tag at the predetermined position is detected, and the RFID tag detection unit 45 detects the RFID tags 10, 10, 10, 10 in the outermost row. In case the vehicle

17 27 37 47

Since the state determination unit 46 determines that the forklift 13 is moving toward a predetermined line, the forklift 13 moves toward the predetermined line without placing a burden on the operator of the forklift 13. It is possible to efficiently determine whether or not the force is! [0103] In the present embodiment, racks adjacent to each other in two rows and multiple columns 11

11 1 11 is associated with 45

Multiple attached RFID tags 10 10 are blocks of RFID tags 10 10 12

11 47 11 47 1, 1

2 is configured, the RFID tag detection unit 45 is transmitted by the RFID tag 10-10.

2 11 47 Based on the detected information, the RFID tag 10 10 at a predetermined position is detected, and the RF tag

11 47

ID tag detection unit 45 2 blocks 12 rows of RFID tags 10

1 and 12 facing two

2

When 10 is detected, the vehicle state determination unit 46 moves the fork toward the predetermined row.

21 37

Since it is determined that the lift 13 is in a moving state, it is possible to efficiently determine whether or not the forklift 13 is moving toward a predetermined row without imposing a burden on the operator of the forklift 13. Can be determined.

[0104] Also, in this embodiment, two rows and a plurality of columns are associated with adjacent racks 11 1 11.

11 46

Multiple attached RFID tags 10 10 are blocks of RFID tags 10 10 12

11 47 11 47 1, 1

11 47

2 blocks by ID tag detector 45 12 RFID tags in 2 rows

1, 12 direction

2

After one 10 is detected, RFID tag 10 — 10 in one row is no longer detected

21 37 21 37

If two rows of RFID tags 10 10 in the same block including one row are detected

11 47

The vehicle state determination unit 46 determines that the forklift 13 has a predetermined rack 11

11 face one face 11 46

Since it is determined that the direction change is in progress, the forklift 13 that does not put a burden on the operator of the forklift 13 faces the predetermined rack 11 1 11

11 46

It is possible to efficiently determine whether or not the force is executing the turning.

[0105] Further, in this embodiment, the RFID tag detection unit 45 is located at the position related to its own RFID tag 10-10.

11 47

Based on the location information sent by the RFID tag 10-10 that stores the information

11 47

Since we decided to detect RFID tag 10 10 at a fixed position, RFID tag 10

11 47

RFI at a given position efficiently by using the location information stored in 10

11 47

D tag 10 10 can be detected.

11 47

[0106] In this embodiment, the RFID tag detection unit 45 identifies the RFID tags 20-20.

1 n

RFID tag that stores information 21 21 20 20 force When ID information 21 21 is received

In the case of 1 n 1 n 1 n, information 21—21 and information related to the position of RFID tag 20—20 are stored in association with each other Since the RFID tag position information 43a stored in the unit 43 is referred to detect the R FID tag 20-20 at the predetermined position, the position information is stored in the storage unit 43.

1 n

This eliminates the need for the RFID tag 20-20 to store location information.

1 n

Can be reduced.

[0107] Although the embodiments of the present invention have been described so far, the present invention can be applied to various different embodiments within the scope of the technical idea described in the claims other than the above-described embodiments. May be implemented.

[0108] For example, in the present embodiment, the above-described vehicle state determination process is performed on a rack with 2 rows and multiple columns, but the present invention is not limited to this, and a multistage with 2 rows and multiple columns is not limited thereto. It is good also as performing vehicle state determination processing with respect to a three-dimensional rack. In this case, after it is determined that the forklift has directly faced the rack for loading / unloading the luggage, a process of searching for the rack stage for loading / unloading the luggage from the plurality of rack stages is performed.

[0109] In addition, among the processes described in this embodiment, all or part of the processes described as being performed automatically can be performed manually, or are described as being performed manually. All or part of the processing can be automatically performed by a known method. For example, the driver can be an automatic transfer device.

[0110] In addition, the processing procedures, control procedures, specific names, and information including various data and parameters shown in the above documents and drawings can be arbitrarily changed unless otherwise specified.

[0111] Further, each component of the vehicle state determination device 40 shown in the figure is functionally conceptual, and is not necessarily configured physically as shown in the drawing.

[0112] That is, the specific form of distribution and integration of the vehicle state determination device 40 is not limited to the one shown in the figure, and all or a part of the vehicle state determination apparatus 40 is functional in arbitrary units according to various loads and usage conditions. Or physically distributed and integrated.

[0113] Furthermore, each or all of the processing functions performed by the vehicle state determination device 40 are realized by a CPU and a program that is analyzed and executed by the CPU, or wired logic. It can be realized as hardware.

Industrial applicability As described above, the vehicle state determination device, the vehicle state determination method, and the vehicle state determination program according to the present invention provide a load storage location where a load that does not place a burden on a driver of a load transport vehicle such as a forklift should be loaded and unloaded. This is useful for a vehicle status determination system that needs to efficiently determine the status of a luggage carrier moving toward the vehicle.

Claims

The scope of the claims

[1] A vehicle state determination device for determining a state of a luggage transport vehicle moving toward a predetermined luggage storage location among a plurality of luggage storage locations,

Directivity adjustment means for adjusting the directivity related to communication so that it can communicate only with the RFID tags in the same row and two rows among the RFID tags attached in association with the luggage storage locations adjacent to each other in two rows and multiple columns. When,

As a result of adjustment by the directivity adjusting means RFID tag force Tag detecting means for detecting an RFID tag at a predetermined position based on received information; and

Vehicle state determination means for determining that the luggage carrier is in a state of facing the luggage storage location when RFID tags in the same column and two rows are detected by the tag detection means. A vehicle state determination device.

[2] A vehicle state determination device for determining a state of a luggage transporter moving toward a predetermined luggage storage location among a plurality of luggage storage locations,

Based on information transmitted by RFID tags attached in association with adjacent storage locations in two rows and multiple columns! /, Tag detection means for detecting an RFID tag at a predetermined position;

Vehicle state determination means for determining that the load carrying vehicle is moving toward a predetermined row when a plurality of RFID tags in the outermost row are detected by the tag detection means. A vehicle state determination device.

[3] A vehicle state determination device for determining a state of a luggage transporter moving toward a predetermined luggage storage location among a plurality of luggage storage locations,

When a plurality of RF ID tags attached in association with two-row, multiple-column adjacent luggage storage locations form an RFID tag block, the information is transmitted based on the information transmitted by the RFID tag. Tag detection means for detecting an RFID tag at a predetermined position, and when the tag detection means detects two rows of RFID tags facing each other in two blocks, a luggage carrier vehicle toward a predetermined column Vehicle state determination means for determining that the vehicle is in a moving state;

A vehicle state determination device comprising:

[4] A vehicle state determination device for determining a state of a luggage transporter moving toward a predetermined luggage storage location among a plurality of luggage storage locations,

When a plurality of RF ID tags attached in association with two-row, multiple-column adjacent luggage storage locations form an RFID tag block, the information is transmitted based on the information transmitted by the RFID tag. Tag detection means for detecting an RFID tag at a predetermined position, and after detection of two rows of RFID tags facing two blocks by the tag detection means, the RFID tag of one row is not detected. When the RFID tag of two rows in the same block including the other row is detected, the vehicle state that determines that the load carrying vehicle is in a state of changing direction so as to face a predetermined baggage storage location A vehicle state determination apparatus comprising: a determination unit.

[5] The tag detecting means detects the RFID tag at a predetermined position based on the position information transmitted by the RFID tag storing the position information related to the own RFID tag! The vehicle state determination device according to any one of claims 1 to 4.

[6] The information processing apparatus further includes a database that stores the identification information for identifying the RFID tag and the positional information related to the RFID tag in association with each other, and the tag detection unit has the R FID tag power that stores the identification information. The vehicle state determination device according to any one of claims 1 to 4, wherein the RFID tag located at a predetermined position is detected by referring to the database when the information is received. .

[7] A vehicle state determination method for determining a state of a luggage transporter moving toward a predetermined luggage storage location among a plurality of luggage storage locations,

A directivity adjustment process that adjusts the directivity related to communication so that it can communicate only with RFID tags in two rows of the same column among RFID tags attached in association with adjacent luggage storage locations in two rows and multiple columns. When,

As a result of adjustment by the directivity adjustment process RFID tag force A tag detection process for detecting an RFID tag at a predetermined position based on received information;

A vehicle state determination step for determining that the luggage carrier is in a state of facing the luggage storage location when two RFID tags in the same column are detected by the tag detection step. A vehicle state determination method. A vehicle state determination program for determining a state of a luggage transport vehicle that moves toward a predetermined one among a plurality of luggage storage locations,

Directivity adjustment procedure for adjusting the directivity related to communication so that it can communicate only with RFID tags in the same row and two rows of RFID tags attached in association with adjacent storage locations in two rows and multiple columns When,

As a result of adjustment by the directivity adjustment procedure RFID tag force A tag detection procedure for detecting an RFID tag at a predetermined position based on received information,

Causing the computer to execute a vehicle state determination procedure for determining that the luggage carrier is in a state of facing the luggage storage location when two RFID tags in the same column are detected by the tag detection procedure. A vehicle state determination program characterized by the above.