JPH0672441A - Pallet, folk lift truck and cargo managing system - Google Patents

Abstract

PURPOSE:To automatically, easily distinguish each pallet from others by a method wherein a transponder is attached on each pallet and a write-read controller on each fork lift truck. CONSTITUTION:During writing, with a fork lift truck 3a inserting its fork into a pallet 4a, the fork lift truck 3a receives various data such as identification code, etc., of the pallet 4a from a host computer 1 and writes them in a transponder in the pallet 4a. During reading, with a fork lift truck 3b inserting its fork into a pallet 4b, the fork lift truck 3b reads out various data on loaded cargo which have been written in a transporder of the pallet 3b, displays them and simultaneously transmits them to the host computer 1 when necessary. The fork lift trucks are connected to the host computer 1 via a radio LAN controller 2, and a radio LAN is formed between the fork lift trucks 3a and 3b and others.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet used in a physical distribution system, a forklift that handles loads on the pallet together with the pallet, and a load management system including those as components.

[0002]

2. Description of the Related Art Conventionally, when loading or unloading a product such as a product, or when moving or arranging a package in or between warehouses, the package is loaded on a pallet and a pallet is used together with the pallet using a forklift. The luggage above is transported.

As described above, since packages such as products are moved together with the pallets, by correlating the contents of the packages loaded on the pallets (item number and quantity, etc.) with the pallets, the pallets are unitized. You can manage your luggage.

Therefore, conventionally, for example, a label for identifying each pallet is attached to a pallet, and the identification label is used when loading a load on the pallet or when identifying a pallet already loaded. I try to read it.

[0005]

However, in such a conventional pallet and the package management system using the pallet as described above, the pallet cannot be automatically identified, and for example, an operator who handles a forklift can identify the label. Had to do the reading work. Further, when there are a large number of pallets loaded with luggage in a certain compartment, it was not possible to easily identify each pallet.

An object of the present invention is to provide a pallet, a forklift and a cargo management system which solves the above-mentioned problems by automatically identifying the pallet when handling it with a forklift.

[0007]

A pallet according to claim 1 of the present invention comprises a coiled antenna, a power conversion means for converting an induced electromotive force of the coiled antenna into electric power, and the coiled antenna. Data transmission for demodulating a received signal into received data and for storing the received data, and for storing data by modulating the stored data with the power generated by the power conversion means and transmitting the data via the coiled antenna. The transponder consisting of means is embedded in the girder.

The pallet according to claim 2 is formed by attaching a label for visually displaying a pallet identifying code to the outer surface.

A forklift according to a third aspect of the present invention comprises a long-wavelength electromagnetic wave transmitting means for transmitting a long-wavelength electromagnetic wave through the coiled antenna provided at the base of the fork or a lower portion of the mast, Write data transmitting means for transmitting write data to the transponder provided in the pallet of the pallet through the coiled antenna, and receiving data transmitted from the transponder provided in the pallet through the coiled antenna. And a palette writing data display means for displaying the received data.

According to a fourth aspect of the package management system of the present invention, a coiled antenna, power conversion means for converting the induced electromotive force of the coiled antenna into electric power, and a signal received via the coiled antenna as received data. Data receiving and storing means for demodulating and storing the received data,
A pallet having a transponder embedded in a girder portion, which is composed of a data transmitting means for modulating stored data by the power generated by the power converting means and transmitting the data via the coiled antenna, and a fork base or a lower part of a mast. A long-wavelength electromagnetic wave transmitting means for transmitting a long-wavelength electromagnetic wave through the coil-shaped antenna; a data receiving means for wirelessly receiving data to be written from a host computer to the transponder provided on the pallet; Write data transmitting means for transmitting write data to the transponder provided in the pallet via the coiled antenna, and data transmitted from the transponder provided in the pallet via the coiled antenna. Data receiving means and a panel for displaying the received data. And a host computer provided with data wireless transmission means for wirelessly transmitting the data to be written in the transponder provided on the pallet and the data read from the transponder to and from the forklift. In addition, the pallet conveyed by the forklift and the load on the pallet are managed on the forklift side and the host computer side.

[0011]

In the pallet according to the first aspect, the transponder embedded in the pallet is provided with the coil-shaped antenna, and the power conversion means converts the induced electromotive force of the coil-shaped antenna into electric power for data reception and storage. The means demodulates a signal received via the coiled antenna into reception data and stores the reception data. Further, the data transmitting means modulates the stored data by the power generated by the power converting means and transmits the modulated data via the coil antenna. As a result, power is transmitted by proximity electromagnetic field coupling in proximity to the pallet, and write data is transmitted, so that the transponder in the pallet is loaded on the pallet identification code or the pallet, for example. It is possible to write package management data and the like, and to read such data from the transponder as necessary.

In the pallet according to claim 2, a label for visually displaying the pallet identifying code according to claim 1 is attached to the outer surface of the pallet. Therefore, it becomes clear whether or not the pallet is provided with the transponder, and when the transponder is provided, the pallet operator or the reader device can visually read the identification code.

In the forklift according to the third aspect, the coiled antenna is provided at the base of the fork or the lower part of the mast, and the long wavelength electromagnetic wave transmitting means transmits the long wavelength electromagnetic wave via the coiled antenna. The write data transmitting means transmits the write data to the transponder provided in the pallet according to the first aspect via the coil antenna. Further, the data receiving means receives the data transmitted from the transponder provided in the pallet via the coil antenna, and the pallet writing data display means,
Display the received data. With this, with the fork inserted in the fork insertion port, write predetermined data to the transponder provided on the pallet,
In addition, the already written data can be read and confirmed by the display. For example, for a transponder, the identification data of the pallet and the data loaded on the pallet,
Alternatively, by writing the management data of the loaded luggage, it becomes possible to immediately check the contents of the articles to be loaded on or loaded on the pallet when handling the pallet.

According to a fourth aspect of the present invention, the package management system comprises a pallet, a forklift and a host computer, and the pallet has the same configuration as that of the first aspect. The forklift is equipped with a coiled antenna at the base of the fork or below the mast, and the long-wavelength electromagnetic wave transmission means transmits long-wavelength electromagnetic waves via the coiled antenna to transmit to the transponder embedded in the pallet. To do. The data receiving means wirelessly receives the data to be written in the transponder provided in the palette from the host computer, and the write data transmitting means transmits the write data to the transponder via the coil antenna. Further, the data receiving means receives the data transmitted from the transponder, and the palette data display means displays the received data. On the other hand, the data wireless transmission means provided in the host computer wirelessly transmits the data to be written in the transponder provided in the pallet to the forklift, and also wirelessly receives the data of the transponder read by the forklift. In this way, the host computer can write predetermined management data into the transponder provided on the pallet via the forklift, and the forklift can read the management data from the pallet to manage the cargo.

[0015]

1 is a block diagram showing a schematic configuration of a package management system according to an embodiment of the present invention. In FIG. 1, 4a and 4b are pallets, and 5 is a load loaded on the pallet 4b. Reference numerals 3a and 3b are forklifts that handle the pallets 4a and 4b, respectively. As will be described later, transponders for writing different data are provided on the pallets 4a, 4b, and the forklifts 3a, 3b write necessary data to the transponders on the pallet side, send a question signal, and send a response from the transponder. Means are provided for identifying the pallet by receiving the signal. For example, at the time of writing, with the forklift 3a inserting the fork into the pallet 4a, the pallet identification code and various data to be loaded received from the host computer are displayed on the pallet 4a.
At the time of writing to and reading from the transponder in a, while the forklift 3b inserts the fork into the pallet 4b, various data relating to the loaded luggage already written in the transponder in the pallet 4b is read out and displayed. , Wirelessly transmits to the host side as necessary. Wireless LA for the host computer 1
N controller 2 is connected, forklift 3
A wireless LAN is configured with a, 3b and the like.

Next, FIG. 2 is a block diagram showing the structure of the device provided in the forklift. In FIG. 2, the antenna unit 15 is composed of a coiled antenna that performs near electromagnetic field coupling with a transponder provided on the pallet. The RF unit 14 includes a transmission / reception circuit that drives the antenna unit 15 to transmit write data or an inquiry signal to the transponder on the pallet side and receive a response signal from the transponder. The control unit 13 receives power from the battery of the forklift, and outputs the unit No, which is the control data of the RF unit 14 and the pallet identification data received from the transponder, to the terminal device 11 via, for example, RS-232C. These antenna parts 1
A device including the RF unit 14, the RF unit 14, and the control unit 13 is hereinafter referred to as an "ID tag". The RF unit 14 and the control unit 13 are TIRIS (Texas Instruments Registration) manufactured by Texas Instruments Incorporated.
and a fixed reader in the Identification System) can be used. The power supply unit 12 receives power from the battery of the forklift truck, and receives the terminal device 11 and the wireless unit 10.
Supply power to. The terminal device 11 transmits / receives data to / from the control unit 13 via the power supply unit 12 and key inputs for loading and unloading luggage on the pallet, such as when handling the pallet or when loading and unloading the pallet. Department,
It includes a display unit for displaying the unit number and the work content. The wireless unit 10 includes a transmitter / receiver that performs data transmission between the terminal device 11 and the host computer.

Next, FIGS. 3 and 4 show examples of mounting the units shown in FIG. 3 shows an example of attachment to a counterbalance type forklift, and FIG. 4 shows an example of attachment to a reach type forklift. In either type, the power supply unit 12, the wireless unit 10, and the control unit 13 are arranged on the roof, and the terminal device 11 is attached to the support column of the roof that can be operated by the operator of the forklift while riding on the forklift. .

FIG. 5 is a view showing an example of mounting the RF section 14 and the antenna section 15 shown in FIG. 2, (A) is a partial left side view near the fork mounting section, and (B) is a view near the fork mounting section. It is the figure seen from the back. In FIG. 5, 16 is a fork and 17 is a fork mounting portion. The antenna portion 15 is attached to the lower portion of the fork attachment portion 17, and the RF portion 14 is attached to the upper portion. The fork attachment part 17 moves up and down along the rail provided on the mast of the forklift. Therefore, the antenna unit 1
5 is always at the base of the fork 16 and its relative positional relationship with the fork does not change. The RF unit 14 and the control unit 13 attached to the roof of the forklift are connected via a cable that moves smoothly according to the vertical movement of the fork and does not affect the movement of the fork.

Next, the structure of the pallet is shown in FIG. Figure 6
As described above, the pallet 4 has a structure in which a plurality of plates are struck on the upper and lower surfaces with three girders sandwiched therebetween. In this embodiment, the transponder is inserted into the middle girder 20 near the fork insertion hole as shown in the figure. Holes 21 and 22 are provided. 7A and 7B are views showing a mounting structure of a transponder on a pallet, FIG. 7A is a partial front view of a middle girder, and FIG. 7B is a front view and a side view of the transponder. In (B), 23 is a transponder, and 24 is a resin tube such as a vinyl tube that covers the periphery of the transponder 23. The transponder thus covered with the resin tube is inserted into the transponder insertion hole 21 provided in the middle girder 20 as shown in (A), and then filled with a filler such as urethane resin or silicone resin. By coating the transponder with the resin tube in this way, the resin tube acts as a cushioning material for the transpanda, and the filling material also acts as a cushioning material, while fixing the transponder and preventing foreign matter from entering.

Since the transponder is provided near the fork insertion hole in the example shown in FIG. 6, it is possible to easily attach the transponder by processing a conventional pallet that has already been prepared. When a transponder is provided when a new pallet is created, one transponder may be embedded in the central part of the middle girder of the pallet. In addition, in order to clarify whether it is a pallet with embedded transponders or a conventional pallet other than that, if the pallet has embedded transponders, the unit number can be visually read. A barcode label obtained by converting the unit number into a barcode or a character label representing the unit number by alphanumeric characters may be attached to the side surface of the pallet or the like.

Next, the structure of the transponder is shown in FIG.
In FIG. 8, 25 is a coil antenna, and 26 is a control circuit. The antenna 25 and the control circuit 26 are the glass 2
A hermetic seal is provided by 7, so that it is not affected by the external environment. The control circuit 26 uses the ID
Receives the write data from the tag and EEP the data
Unit N is written in ROM and responds to the inquiry signal.
The data already written in the EEPROM such as o is F
M-modulate and transmit. Therefore, even when a plurality of pallets are stacked, the ID tag on the forklift side can selectively receive only the response signal from the closest transponder provided on the pallet in which the fork is inserted. The transponder 23 is, for example, TIRIS (Texas Inst
ruments Registration and Identification System) can be used.

FIG. 9 is a diagram showing the relationship between the antenna section 15 and the transponder 23 shown in FIG. In this way, in the state where the transponder 23 is close to the position where the transponder 23 is coupled to the proximity electromagnetic field of the forklift-side antenna unit 15, the coil antenna on the transponder 23 side and the coil-shaped antenna of the forklift-side antenna unit 15 are coupled to each other by the proximity electromagnetic field. To do. In this state, the transponder 23 receives the transmission signal from the antenna unit 15 as electric power, and the transponder 23 transmits the unit No to the antenna unit 15 by the electric power.

FIG. 10 shows a timing chart of transmission / reception between the transponder and the ID tag.
In FIG. 10, (A) shows a signal on the ID tag side, and (B) shows a signal on the transponder side. The ID tag determines whether or not any signal such as an interrogation signal is transmitted from the ID tag provided in another forklift during the synchronization period, or whether any signal is transmitted from the transponder to be read. If not, the power transmission signal is transmitted to the transponder. An induced electromotive force is generated in the coil antenna on the transponder side by this signal, and the transponder rectifies the electromotive force and accumulates electric charges in a capacitor or the like. When a constant power supply voltage is supplied to the control circuit of the transponder, the transponder waits for a command from the ID tag. The ID tag transmits the write data as a command to the transponder or transmits a command requesting the transmission of the already written data to the transponder after power transmission for a certain period of time. When the transponder receives the write data, the data is EE
When a command requesting writing to the PROM or data transmission is received, certain data processing (for example, data conversion for transmitting data in the specified format) is performed and transmission is performed. By receiving the signal, the ID tag reads the unit number of the pallet and the data accompanying it.

The configuration of the package management system including the pallet, forklift and host computer described above will be described below.

The host computer 1 shown in FIG. 1 stores management data as shown in FIG. Figure 11
In (A), the “vehicle number” is an identification number of a truck that transports luggage at the time of loading and unloading. The “business division” is data for dividing and managing the parcels to be managed for each business division. "Part number" is a number that identifies each package, "Location" is data that indicates in which zone on which floor the package should be placed, "Package number" is the package number of the package,
The "fraction" is data of the fraction not packed. In this way, data on each package is managed for each business unit for each vehicle number. For example, these data have already been set in the host computer as data to be stored at the time of storage.

FIG. 11B shows management data of each package when a predetermined package is already loaded on the pallet. In (B), "Unit No." is a pallet identification code. In this way, each business division manages the cargo loaded on the pallet on a pallet basis.
For example, these data are created after the storage process is completed.

Next, with reference to the warehousing process as an example, FIGS. 12 to 14 show display examples of the terminal device provided on the forklift.
FIG. 12 is a display example at the start of the warehousing process. The forklift operator inputs the vehicle number, which is the identification number of the truck, and operates the transmission key to display the display shown in FIG. 12 (the display content of the vehicle number is omitted in the figure). ). After that, a screen for inputting the warehousing record as shown in FIG. 13 is displayed. In this way, the car number, division and unit number are displayed at the top, and each product number and its location, the number of packages and the fraction are displayed. In the figure, FZ is location data indicating which zone on which floor should be placed. These data are obtained from the data shown in FIG. A forklift operator loads a load such as a product unloaded from a truck on an upper portion of a pallet, and then inputs a unit number which is an identification code of the pallet. However, the unit number does not need to be keyed in and is automatically read when the fork is inserted into the fork insertion hole of the pallet. Further, the product number of the product loaded on the pallet is selected from the content displayed on the screen by operating the cursor keys, and the number of packages and the fraction of the product are keyed in. In this way, by entering the correspondence relationship between the pallets and the loads loaded on the pallets in sequence, the warehousing results are input, and if all the planned warehousing is completed, FIG.
The screen of the receipt record confirmation list as shown in is displayed.
Since the vehicle number is already known here, the vehicle number is displayed by default. In this state, enter the berth number (the number that identifies the berthing location of the truck) and operate the send key to send the pallet and the receipt record data that shows the correspondence relationship with the parcel loaded on the pallet to the host computer. To be done.

Next, the processing of the forklift-side terminal device and the processing procedure of the forklift operator are shown as flow charts in FIGS.

As shown in FIG. 15, when the power is turned on, a menu screen is displayed (n1). As for the menu,
There are warehousing processing, location, picking, inspection, loading, returning of pallets, etc. First, the personnel number input by the forklift operator is read (n2). Then, the selection of the menu number is read, and the process proceeds to each work process corresponding to the selected number. If the warehousing process is selected here, the process proceeds to the process shown in FIG. First, a screen for requesting a warehousing instruction as shown in FIG. 12 is displayed, and the vehicle number input by the operator is read (n4 → n5). Then, if the send key is operated, the input screen of the storage result as shown in FIG. 13 is displayed (n6 → n7). After that, when the pallet is picked up in order to move the pallet to be loaded with the load to a predetermined position, the ID tag of the forklift reads the unit number of the transponder provided on the pallet and automatically inputs it (n9 → n10). . If the automatic input is not performed, the unit number input by the key operation is read (n11). After that, the line cursor for selecting the article number of the parcel loaded on the pallet is displayed, the operation of the up and down cursor keys is read, and the line cursor is moved up and down accordingly (n12 →
n13). Then, the key input of the number of packages and the fraction of the selected product number is read, and when the ENT key is operated, the product number is highlighted (n15 → n16). Also, subtract the number of packages and the fraction read together with this from the planned receipt data,
Redisplay the number of packages and fractions of the part number that should still be stored (n
16 → n12). In this way, the selection of the product number and the input of the number of packages and the number of fractions are sequentially performed, and after loading a predetermined amount on one pallet, the key operation indicating the completion is read and the transponder of that pallet is read. , Write various data such as the product number loaded on the pallet, the number of packages, and the fraction (n17). Then, the number of packages and the number of fractions already stored are subtracted and redisplayed (n18). Subsequently, when moving the next empty pallet to a predetermined position, the unit No. of the pallet is automatically input in the same manner, and the same processing is repeated thereafter (n18 → n9 → n10 ...). When all scheduled storage is completed, all the product numbers shown in FIG. 13 are highlighted, and the number of packages and the fraction are all 0. If the operation of the next screen key is read in this state, the storage result confirmation list screen shown in FIG. 14 is displayed (n19 → n20). Berth no here
If you read the key input of and read the operation of the send key,
The host computer is informed that the planned warehousing process is completed for each vehicle number (n21 → n23). After that, the operation of the menu key is read and the menu screen is displayed (n24 → n25). If the end key is operated here, the end screen is displayed, and the series of processes is ended (n2).
6).

18 and 19 are flowcharts showing the procedure of the forklift-side terminal device and the procedure of the forklift operator using location processing as an example.
Shown in. When a location is selected from the menu, the initial screen for location processing is displayed first (n3
0). Here, by scooping up the target palette, the data transmitted from the transponder of the palette is read (n31 → n32). If the data transmitted from the transponder is not used, the input of the unit No. performed by the operator is read (n33). Then, the operation of the transmission key is read, the input unit No. is wirelessly transmitted to the host computer, and the management data stored in association with the unit No. is received (n3).
5). Then, based on the obtained data, a list of each product number loaded on the pallet, the number of packages, and the fraction is displayed and a line cursor is displayed (n36). continue,
Read the operator's up / down cursor key operation, move the line cursor position according to the key operation, and read the key input for the number of packages and fractions of the product to be reloaded from the pallet specified by the product number ( n37 → n3
8). Also, read the key operation to change the page,
The corresponding page is displayed (n39 → n36). After the package number and the fraction of the product number indicated by the line cursor are read, the product number is highlighted (n40). If you read the key operation indicating that the predetermined work is completed here, while writing the data in the pallet transponder, which is obtained by subtracting the number of packages and the number of fractions of the packages transshipped from the pallet,
The data is wirelessly transmitted to the host computer (n4
1 → n42 → n43). After that, the key operation for instructing the menu display is read and the process moves to the display process of the menu screen shown in FIG. 15 (n44 → n25). Further, for other palettes, the key operation for performing the location processing is read and the same processing is repeated (n45 → n31 ...).

As described above, since the data to be stored is prepared in advance on the host computer side, the operator of the forklift selects the product number of the product loaded on the pallet from the list received from the host computer during the storage process. By inputting the number of packages and fractions, the loading contents on the pallet can be written to the pallet transponder, and it is provided on the pallet without referring to the data of the host computer in location processing etc. It becomes possible to perform processing based on the data of the transponder.

[0032]

With the pallet according to the first aspect of the present invention, various data to be stored in association with each pallet can be written in the transponder provided in the pallet,
In addition, the various data can be read only by transmitting a question signal and bringing a device for reading the response signal close to the device. For example, unlike a case where a label provided on the side surface of the pallet is optically read, the pallet is read. Can be read at any position.

In the pallet according to claim 2, it becomes clear whether or not the pallet is provided with a transponder,
When the transponder is provided, the identification code can be visually read by the pallet operator or the reader device.

In the forklift according to the third aspect, when the pallet provided with the transponder is scooped up, various data to be stored in association with each pallet can be written in the transponder provided in the pallet, and the data of each pallet is automatically stored. To read and display
It becomes easy to understand various data related to the pallets to be handled.

In the package management system according to the fourth aspect, the relation between the pallet and the package to be loaded on the pallet or the package loaded on the pallet is referred to the data of the host computer at a necessary time, and those data are stored in the pallet. Once written on the transponder, each pallet can be managed on the forklift side, which makes it extremely easy to manage packages on a pallet basis.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a package management system that is an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a device provided in a forklift.

FIG. 3 is an external view showing an example of how the device is attached to a forklift.

FIG. 4 is an external view showing an example of how the device is attached to a forklift.

FIG. 5 is a diagram showing an example of attaching an ID tag to a forklift.

FIG. 6 is a perspective view showing a configuration of a pallet.

FIG. 7 is a view showing a mounting structure of a transponder on a pallet.

FIG. 8 is a diagram showing a structure of a transponder.

FIG. 9 is a diagram showing a relationship between an antenna on a forklift side and a transponder.

FIG. 10 is a timing chart of transmission / reception performed between a transponder and an ID tag.

FIG. 11 is a diagram showing a configuration of management data on the host computer side.

FIG. 12 is a display example of a storage instruction request screen displayed on the terminal device of the forklift.

FIG. 13 is a display example of a storage result input screen displayed on the terminal device of the forklift.

FIG. 14 is a diagram showing a display example of a storage result confirmation list displayed on the terminal device of the forklift.

FIG. 15 is a flowchart showing a processing procedure performed by a forklift-side terminal device and a forklift operator.

FIG. 16 is a flowchart showing a processing procedure performed by a forklift-side terminal device and a forklift operator.

FIG. 17 is a flowchart showing a processing procedure performed by a forklift-side terminal device and a forklift operator.

FIG. 18 is a flowchart showing a processing procedure of a forklift-side terminal device and a forklift operator.

FIG. 19 is a flowchart showing a processing procedure performed by a forklift-side terminal device and a forklift operator.

[Explanation of symbols]

 1-Host Computer 2-Wireless LAN Controller 3a, 3b-Forklift 4a, 4b-Pallet 5-Luggage 10-Wireless Section 11-Terminal Device 12-Power Supply Section 13-Control Section 14-RF Section 15-Antenna Section 16-Fork 17 -Fork attachment part 20-Middle girder 21,22 transponder insertion hole 23-Transponder 24-Resin tube 25-Coil antenna 26-Control circuit 27-Glass

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shin Miura 9-52 Ashihara-cho, Nishinomiya-shi, Hyogo Furuno Electric Co., Ltd. (72) Inventor Miki Ihara 9-52 Ashihara-cho, Nishinomiya-shi, Hyogo Furuno Electric Co., Ltd. Within

Claims (4)

[Claims] 1. A coiled antenna, power conversion means for converting induced electromotive force of the coiled antenna into electric power, a signal received via the coiled antenna, demodulated into received data, and the received data. A transponder including a data receiving / storing means for storing and a data transmitting means for modulating the stored data by the electric power generated by the power converting means and transmitting the modulated data via the coiled antenna is embedded in the digit part. Palette to do. 2. The pallet according to claim 1, wherein a label for visually displaying the identification code of the pallet is attached to the outer surface. 3. A pallet according to claim 1, further comprising: a long-wavelength electromagnetic wave transmitting means for transmitting a long-wavelength electromagnetic wave through the coil-shaped antenna provided at a base of the fork or a lower portion of the mast. Write data transmitting means for transmitting write data to the transponder via the coiled antenna, and data receiving means for receiving data transmitted from the transponder provided in the pallet via the coiled antenna, A forklift, comprising: pallet writing data display means for displaying received data. 4. A coil-shaped antenna, power conversion means for converting an induced electromotive force of the coil-shaped antenna into electric power, a signal received via the coil-shaped antenna, demodulated into reception data, and the reception data. A pallet having a transponder embedded in a girder portion, the pallet having a data receiving and storing means for storing and a data transmitting means for modulating the stored data by the electric power generated by the power converting means and transmitting the modulated data via the coiled antenna; Equipped with a coiled antenna at the bottom of the mast or at the bottom of the mast, and transmits a long-wavelength electromagnetic wave through the coiled antenna, and wirelessly transmits data to be written from the host computer to the transponder provided in the pallet. The data receiving means for receiving and the transponder provided in the pallet are paired. Write data transmitting means for transmitting write data via the coil antenna, and data receiving means for receiving data transmitted from the transponder provided in the pallet via the coil antenna. A forklift equipped with pallet data display means for displaying data, and a data wireless transmission means for wirelessly transmitting data to be written to a transponder provided on the pallet and data read from the transponder to and from the forklift. And a host computer that
A package management system that manages pallets transported by forklifts and packages on the pallets on the forklift side and host computer side.