JP7340754B2 - Antenna system, reading system, storage system and antenna installation method - Google Patents

Description

The present disclosure generally relates to an antenna system, a reading system, a storage system, and an antenna installation method, and more specifically, the present disclosure relates to an antenna system, a reading system, a storage system, and an antenna installation used for wireless communication of electronic tags attached to articles. Regarding the method.

Patent Document 1 describes a cabinet that has a function of managing expiration dates of articles. In Patent Document 1, an electronic tag (IC tag) is attached to the outer peripheral surface of an article, and the article itself is stored in a storage unit of a cabinet.

In this storage cabinet, the antenna is fixed to the inner surface of the side wall of the storage unit via a printed circuit board. The antenna is connected to a reading device (IC tag reader/writer) and realizes communication with the electronic tag by transmitting a radio signal.

Japanese Patent Application Publication No. 2005-306574

However, if the display state of the items in the storage room changes, for example, the relative positional relationship between the antenna and the items changes, causing fading, which is a change in the reception level of radio waves, and the communication inside the storage area changes. A space (so-called null point) may occur where the value becomes unstable. If an article exists in a space where communication is unstable, it may be difficult to read information on the article.

The present disclosure has been made in view of the above reasons, and aims to provide an antenna system, a reading system, a storage system, and an antenna installation method that can accommodate a wider variety of display states of articles.

An antenna system according to one aspect of the present disclosure includes at least one antenna module and a position adjustment section. The antenna module is used in a reading device and includes an antenna that receives radio waves. The reading device reads article information by performing wireless communication using the radio waves as a medium with an electronic tag attached to at least one article stored in a storage having a temperature control function. The position adjustment unit attaches the antenna module to the housing in a state where the attachment position of the antenna module with respect to the housing can be changed. The storage includes a housing and a door body. The housing has an opening surface. The door body can be opened and closed between a closed position where the opening surface of the housing is closed and an open position where the opening surface is opened. The housing is provided with a plurality of attachment target parts. The plurality of attachment target parts can variably attach a shelf board on which the article is placed in a vertical direction. The plurality of attachment target parts are arranged at predetermined intervals in a depth direction of an inner surface facing the internal space of the storage when viewed from the opening surface. The position adjustment section is capable of attaching the antenna module to the plurality of attachment target sections.

A reading system according to one aspect of the present disclosure includes the antenna system and the reading device.

A storage system according to an aspect of the present disclosure includes the reading system and the storage.

An antenna installation method according to one aspect of the present disclosure is a method of installing at least one antenna module. The antenna module is used in a reading device and includes an antenna that receives radio waves. The reading device reads article information by performing wireless communication using the radio waves as a medium with an electronic tag attached to at least one article stored in a storage having a temperature control function. The storage includes a housing and a door body. The housing has an opening surface. The door body can be opened and closed between a closed position where the opening surface of the housing is closed and an open position where the opening surface is opened. The housing is provided with a plurality of attachment target parts. The plurality of attachment target parts can variably attach a shelf board on which the article is placed in a vertical direction. The plurality of attachment target parts are arranged at predetermined intervals in a depth direction of an inner surface facing the internal space of the storage when viewed from the opening surface. The antenna installation method includes the step of attaching the antenna module to the plurality of attachment target parts in the housing in a state where the attachment position of the antenna module with respect to the housing can be changed.

According to the present disclosure, there is an advantage that it is possible to accommodate a wider variety of display states of articles.

FIG. 1 is a block diagram showing the configuration of a storage system according to the first embodiment. FIG. 2 is a schematic perspective view showing the appearance of the storage system same as above. FIG. 3 is a schematic perspective view showing the external appearance of the above storage system with the door body open. FIG. 4 is a schematic perspective view showing the same storage system as above, with a part of the casing and door body omitted. FIG. 5 is an enlarged perspective view of the main parts of the storage system same as above, with a part of the casing and door body omitted. 6A to 6C are schematic perspective views showing examples of use of the above storage system. FIG. 7 is an exploded perspective view of an antenna module used in the above storage system. FIG. 8A is a schematic perspective view showing the main parts of the antenna system in the above storage system before attachment of the antenna module. FIG. 8B is a schematic perspective view of the main parts of the antenna system after the antenna module is attached. FIG. 9A is a schematic perspective view showing the main parts of the above antenna system and showing the mounting structure of the antenna module. FIG. 9B is a partially cutaway schematic perspective view of region Z1 in FIG. 9A. FIG. 9C is a partially cutaway schematic perspective view of region Z2 in FIG. 9A. FIG. 10 is a schematic perspective view showing one antenna module of the above antenna system. FIG. 11 is a schematic perspective view showing three antenna modules of the above antenna system. FIG. 12 is a flowchart showing an antenna installation method using the same antenna system as above. FIG. 13 is a block diagram showing the configuration of a storage system according to the second embodiment.

(Embodiment 1)
(1) Overview The antenna system 10 according to this embodiment is a system used in a reading system 100, as shown in FIG. The reading system 100 includes an antenna system 10 and a reading device 4. The reading device 4 is a device that reads article information from an electronic tag 92 attached to at least one article 91.

The reading device 4 executes reading of article information by performing wireless communication with the electronic tag 92 using radio waves as a medium. In other words, the reading device 4 does not read the article information directly from the article 91, but reads the article information from the electronic tag 92 attached to the article 91 in a non-contact manner.

"Product information" in the present disclosure is information for identifying the product 91, and is, for example, a product identification code such as a JAN (Japanese Article Number) code used in Japan. In addition to the JAN code, this type of product identification code includes the EPC (Electronic Product Code), the EAN (European Article Number) code used in Europe, and the UPC (Universal Product Code) used in the United States. etc. Furthermore, the article information is not limited to information that identifies the type (type) of the article 91, but may include information such as serial information that individually identifies articles 91 of the same type. Thereby, even if there are a plurality of articles 91 of the same type, each of the plurality of articles 91 of the same type can be specified using the article information.

Here, the article 91 whose article information is to be read by the reading system 100 is the article 91 stored in the storage warehouse 5 . That is, the reading device 4 reads article information from the electronic tag 92 attached to at least one article 91 stored in the storage 5 . Therefore, if there are articles 91 both inside and outside the storage 5, the reading system 100 basically reads the article information on the articles 91 inside the storage 5. conduct. The “accommodation warehouse” in the present disclosure is a container that can accommodate one or more articles 91, and includes, for example, a refrigerator, a freezer, a heat-retaining warehouse, or a container that can shield the internal space Sp1 (see FIG. 3) from the outside. This is equipment that has a temperature control function such as a hot storage. However, the storage 5 only needs to have the function of accommodating the articles 91, and may be an open type storage with the internal space Sp1 open to the outside, or may have a temperature control function. You don't have to.

The reading system 100 constitutes a storage system 50 together with the storage 5 . That is, the storage system 50 according to this embodiment includes the reading system 100 and the storage 5. In other words, the storage system 50 includes the antenna system 10, the reading device 4, and the storage 5.

The antenna system 10 according to this embodiment includes at least one antenna module 2 and a position adjustment section 3 (see FIG. 5). Antenna module 2 is used in reading device 4 . The antenna module 2 includes an antenna 21 (see FIG. 7) that receives radio waves (radio waves used as a medium for wireless communication between the reader 4 and the electronic tag 92). The position adjustment unit 3 attaches the antenna module 2 to the storage 5 in a state where the attachment position of the antenna module 2 to the storage 5 can be changed. As described above, the reading device 4 is a device that reads article information by performing wireless communication using radio waves as a medium with the electronic tag 92 attached to at least one article 91 stored in the storage warehouse 5. .

That is, in the antenna system 10 according to the present embodiment, at least one antenna module 2 is configured such that its mounting position can be changed with respect to the storage 5 in which the article 91 whose article information is to be read is stored. , is attached by the position adjustment section 3. Therefore, according to the antenna system 10, the mounting position of the antenna module 2 can be adjusted according to the display state of the articles 91, such as the number of articles 91 and the arrangement of the articles 91 in the storage warehouse 5, for example. can. As a result, the antenna system 10 according to the present embodiment can accommodate a wider variety of display states of the articles 91.

(2) Details Hereinafter, the antenna system 10, reading system 100, storage system 50, and antenna installation method according to the present embodiment will be described in detail. As described above, the storage system 50 includes the reading system 100 and the storage 5. Further, the reading system 100 includes an antenna system 10 and a reading device 4.

The storage system 50 is installed in, for example, an office (including a shared office), a factory, a train station, a school, a retail store such as a convenience store or a supermarket, a welfare facility, a hospital, or a facility such as a gymnasium. 6A)). "Sale" as used in this disclosure means an action on the part of the seller in which the ownership of the article 91 is transferred from the seller to the buyer (customer 90), and the buyer pays the consideration (price) for this to the seller (sales). do.

In this embodiment, as an example, it is assumed that the storage system 50, the reading system 100 included in the storage system 50, and the antenna system 10 included in the reading system 100 are introduced into an office and used for sales support. . In the sales support application, the articles 91 stored in the storage warehouse 5 of the storage system 50 are "products" to be sold to the customers 90, and the reading system 100 is used to identify the items 91 that are the products. Article information is read from the electronic tag 92. In other words, the article information regarding the article 91 (product) is "product information."

Further, in the present embodiment, a case will be described as an example in which the storage 5 is a facility having a temperature control function, particularly a refrigerator (including a refrigerated showcase) having a refrigeration function. Therefore, the articles 91 stored in the storage 5 are refrigerated within the storage 5. In the following, food and drinks such as plastic bottled drinks and canned drinks will be assumed as an example of the articles 91 stored in the storage 5.

(2.1) Configuration of Storage System First, the overall configuration of the storage system 50 according to the present embodiment will be described with reference to FIGS. 1 to 5.

The storage system 50 includes the reading system 100 and the storage 5, as described above.

As described above, the storage 5 is a refrigerator (including a refrigerated showcase) that has a refrigeration function and can accommodate a plurality of articles 91 such as plastic bottle drinks. As shown in FIGS. 2 and 3, the storage 5 has an overall shape with a height larger than its width and depth, that is, a rectangular parallelepiped shape that is long in the vertical direction. In this embodiment, the storage 5 includes one or more mounting tables 51, a housing 52, and a door body 53.

As shown in FIGS. 2 and 3, the housing 52 includes a base portion 521, a roof portion 522, and wall portions 523a, 523b, and 523c. The casing 52 as a whole is formed in a box shape with an opening at the front, and the internal space Sp1 of the storage 5 can be accessed from the front of the casing 52.

The base portion 521 and the roof portion 522 each have a rectangular shape in plan view, and are formed in a shape with a height smaller than width and depth, that is, a rectangular parallelepiped shape that is short in the vertical direction. The base portion 521 constitutes the lower end portion of the housing 52 and is located below the internal space Sp1 of the storage 5. The roof portion 522 constitutes the upper end portion of the housing 52 and is located above the internal space Sp1 of the storage 5.

The wall portions 523a, 523b, and 523c are arranged between the base portion 521 and the roof portion 522 so as to surround the internal space Sp1 of the storage 5 from three sides. Specifically, the wall portion 523a and the wall portion 523b are arranged to face each other in the left-right direction. When viewing the storage 5 from the front, a wall portion 523a is located on the left side of the internal space Sp1, and a wall portion 523b is located on the right side of the internal space Sp1. The wall portion 523c is configured to connect the rear end portions of the wall portions 523a and 523b. The wall portion 523c is located at the back of the internal space Sp1 when viewing the storage 5 from the front.

Here, as shown in FIG. 3, the storage 5 has an inner surface 520 facing inward (internal space Sp1 side). In this embodiment, at least the surface of the wall portions 523a, 523b, and 523c that faces the internal space Sp1 of the storage 5, that is, the surface facing the inside of the storage 5, becomes the inner surface 520 (see FIG. 3).

The door body 53 is a member that closes the front surface of the casing 52, which is the opening surface of the casing 52. The door body 53 is configured to be openable and closable. Here, the door body 53 has light transmittance. Furthermore, the door body 53 has radio wave shielding properties. In other words, the door body 53 does not always block the front surface of the casing 52, but is movable between a "closed position" in which it blocks the front surface of the casing 52 and an "open position" in which the front surface of the casing 52 is opened. (can be opened and closed). In this embodiment, the door body 53 is a swing door that opens to the right, that is, to the right, as shown in FIG. That is, the door body 53 opens and closes by rotating relative to the housing 52 with the right end of the front surface of the housing 52 as the rotation axis.

As an example, the door body 53 includes a frame and a glass plate fitted into the frame. The door body 53 has a shielding sheet having radio wave shielding properties affixed to at least one of the front surface (the surface facing the outside of the storage 5) and the back surface (the surface facing the inside of the storage 5) of the glass plate. The system adopts a new configuration. Both the glass plate and the shielding sheet have light transmittance. Therefore, even when the door body 53 is in a closed state, the customer 90 can see the inside of the storage warehouse 5 through both the glass plate and the shielding sheet in the door body 53. Therefore, for example, the customer 90 can check the inventory status of the articles 91 stored in the storage warehouse 5, that is, the articles 91, with the door body 53 closed. Further, if a price tag is attached to the article 91 stored in the storage warehouse 5, information such as the price of the article 91 can be presented to the customer 90 with the door body 53 closed.

Here, since the storage 5 has a refrigeration function, the casing 52 and door body 53 surrounding the internal space Sp1 have heat insulation properties. In the storage 5, an electrical device such as a compressor that also serves as a heat source is housed in a base portion 521 or a roof portion 522.

As shown in FIGS. 4 and 5, one or more mounting tables 51 function as a table on which the article 91 is placed in the internal space Sp1. That is, the storage 5 includes a mounting table 51 on which the article 91 is placed. The mounting table 51 is formed into a rectangular plate shape, and constitutes a shelf board for dividing the internal space Sp1 of the storage 5 into a plurality of regions in the vertical direction. The mounting table 51 is attached to the housing 52. The mounting table 51 is made of metal, for example, but is not limited to this example, and may be made of resin, for example. The mounting table 51 is not limited to a plate-like member, and may be, for example, a grid-like, ladder-like, or net-like member (including a wire mesh). In FIGS. 4 and 5, illustrations of parts of the housing 52 and the door body 53 (walls 523a, 523b, 523c, etc.) are omitted, and the external shape of the storage compartment 5 is shown with imaginary lines (two-dot chain lines). .

In particular, in this embodiment, the internal space Sp1 of the storage 5 is formed in a shape that is larger in height than its width and depth, that is, in the shape of a rectangular parallelepiped that is long in the vertical direction. In order to efficiently store the articles 91 in such an internal space Sp1, the storage 5 has a plurality of mounting tables 51 as shelf boards, and these mounting tables 51 allow the storage of the articles 91 to be placed vertically. Multiple stages are formed in the direction. In this embodiment, the storage 5 includes five mounting tables 51. Therefore, the plurality of articles 91 can be housed in the internal space Sp1 in five stages in the vertical direction. In the following, when distinguishing each of the five mounting tables 51, they may be referred to as the first stage, second stage, third stage, fourth stage, and fifth stage mounting stages 51 in order from the top. .

Thus, in this embodiment, the mounting table 51 functions as a partition for dividing the internal space Sp1 of the storage 5 into a plurality of regions. The "partition part" in the present disclosure may be any structure that partitions a plurality of areas, and is not limited to a structure that completely separates (isolates) a plurality of areas. , poles, ropes, chains or wires.

Here, in the storage 5 according to the present embodiment, the position of the partition part (mounting table 51) for dividing the internal space Sp1 into a plurality of areas is variable. In this embodiment, the partition part (placing table 51) vertically divides the internal space Sp1 of the storage 5 into a plurality of regions, and the position of the partition part (placing table 51) also varies in the vertical direction. , is variable.

Specifically, the storage 5 adopts a system similar to a storage shelf called a flexible shelf or a movable shelf, and the position of the partition part (placing table 51) can be changed in steps in the vertical direction. That is, the storage 5 has a plurality of shelf posts 54 installed on its inner surface 520, and the partition portion (placing table 51) is attached to the housing 52 using these shelf posts 54. . The shelf post 54 is a rod-shaped member that extends in the vertical direction, and is fixed to the housing 52. In this embodiment, the storage 5 has four shelf pillars 54. The two shelf posts 54 are fixed to the inner surface 520 of the wall portion 523a. Further, two other shelf posts 54 are fixed to the inner surface 520 of the wall portion 523b. The two shelf posts 54 fixed to the wall portion 523a (or the wall portion 523b) are arranged at a predetermined interval in the front-rear direction (depth direction). The shelf pillar 54 is made of metal as an example, but is not limited to this example, and may be made of resin, for example.

As shown in FIG. 5, each shelf post 54 has a substantially C-shaped cross section that is perpendicular to the vertical direction and is open toward the wall portion 523a (or wall portion 523b). Moreover, a plurality of attachment target parts 55 are formed on each shelf pillar 54. In this embodiment, each attachment target portion 55 is a through hole that penetrates the shelf pillar 54 in the thickness direction. These plural attachment target parts 55 are arranged so as to be lined up at equal intervals in the vertical direction. The mounting table 51 is attached to the housing 52 by using any one of the plurality of attachment target parts 55 on the shelf pillar 54. Here, the mounting table 51 is supported by four hooks 511 attached at the same position (height) on the four shelf pillars 54 in the vertical direction. Each hook 511 is fixed using a pair of attachment target parts 55 adjacent to each other so as to be hooked onto the pair of attachment target parts 55. The four hooks 511 support the mounting table 51 by hooking on the four corners of the mounting table 51.

With this configuration, the position of the mounting base 51 with respect to the housing 52 can be changed depending on which of the plurality of mounting target parts 55 is used to attach the mounting base 51 (hook 511). For example, by shifting the attachment target part 55 to which the hook 511 is attached downward by the distance between the attachment target parts 55, the mounting table 51 moves downward by the distance between the attachment target parts 55. Similarly, by shifting the attachment target part 55 to which the hook 511 is attached upward by the distance between the attachment target parts 55, the mounting table 51 moves upward by the distance between the attachment target parts 55.

As described above, since the position of the mounting table 51 as a partition is variable in the vertical direction, it is possible to change the position of the mounting table 51 according to the height of the article 91, for example. That is, if the height of the article 91 placed on the mounting table 51 increases, the loading table 51 may be moved downward accordingly; conversely, if the height of the article 91 placed on the loading table 51 becomes shorter, For example, the mounting table 51 can be moved upward by that amount.

Furthermore, if the position of the mounting base 51 is changed depending on which of the plurality of mounting target parts 55 is used to attach the mounting base 51, as in this embodiment, In the first place, the number of mounting tables 51 attached to the housing 52 can also be changed. That is, in the example of FIG. 4, there are five mounting tables 51, but it is also possible to add more mounting tables 51 to make six or more mounting tables 51, or to remove the mounting tables 51 to make four or less mounting tables 51. It can also be used as a stand 51.

Next, the configuration of the reading system 100, which constitutes the storage system 50 together with the storage 5 configured as described above, will be described.

The reading system 100 includes the antenna system 10 and the reading device 4, as described above. Further, as shown in FIG. 1, the reading system 100 according to the present embodiment further includes a main computer 101, a detection device 102, an authentication device 103, and a user interface 104 in addition to the antenna system 10 and the reading device 4. There is.

The antenna system 10 includes at least one antenna module 2 and a position adjustment section 3. The antenna module 2 is attached to the storage 5 by the position adjustment unit 3 in such a manner that the mounting position of the antenna module 2 relative to the storage 5 can be changed. The antenna module 2 includes an antenna 21 (see FIG. 7) that receives radio waves (radio waves used as a medium for wireless communication between the reader 4 and the electronic tag 92). In this embodiment, the antenna 21 is used not only for receiving radio waves but also for transmitting radio waves.

In this embodiment, as shown in FIG. 4, the antenna module 2 is arranged in the internal space Sp1 of the storage 5. Here, three antenna modules 2 are provided for each mounting table 51. For example, three antenna modules 2 are attached above the first stage mounting table 51. Three antenna modules 2 are also attached between the first stage mounting table 51 and the second stage mounting table 51.

In the following, when distinguishing each of the plurality of antenna modules 2 arranged in the vertical direction, the antenna modules 2 in the first, second, third, fourth, and fifth tiers are used in order from the top. I may call you. That is, the first stage antenna module 2 is arranged above the first stage mounting table 51, and the second stage antenna module 2 is arranged between the first stage mounting stage 51 and the second stage mounting stage 51. placed between. The first stage antenna module 2 is an antenna module 2 mainly for reading article information of the article 91 placed on the first stage mounting table 51. The second-stage antenna module 2 is an antenna module 2 mainly for reading article information of the article 91 placed on the second-stage mounting table 51.

Below, when distinguishing between the three antenna modules 2 corresponding to one mounting table 51, that is, the three antenna modules 2 arranged in the horizontal direction, they may be referred to as antenna modules 2a, 2b, and 2c. These three antenna modules 2a, 2b, and 2c are arranged so as to surround the article 91 on the mounting table 51 from three sides. Specifically, the antenna module 2a and the antenna module 2b are arranged to face each other in the left-right direction. When viewing the storage 5 from the front, the antenna module 2a is located on the left side of the internal space Sp1, and the antenna module 2b is located on the right side of the internal space Sp1. The antenna module 2c is located at the back of the internal space Sp1 when the housing 5 is viewed from the front.

The antenna system 10 including the position adjustment unit 3 will be described in detail in the section "(2.3) Antenna module configuration" or "(2.4) Antenna system configuration".

The reading device 4 is a device that reads article information by performing wireless communication using radio waves as a medium with an electronic tag 92 attached to at least one article 91 stored in the storage warehouse 5 . The reading device 4 performs wireless communication with the electronic tag 92 using the antenna 21 (see FIG. 7) included in the antenna module 2.

In this embodiment, the reading device 4 is a reader that constitutes an RFID (Radio Frequency Identification) system. That is, the reading device 4 acquires article information stored in the electronic tag 92 by performing wireless communication with the electronic tag 92 in the RFID system.

The electronic tag 92 is, for example, a passive RF (Radio Frequency) tag, and has a memory that stores at least article information. Here, a plurality of electronic tags 92 are associated with a plurality of articles 91 on a one-to-one basis. The electronic tag 92 stores article information about the corresponding article 91, and the electronic tag 92 is attached to the corresponding article 91.

The electronic tag 92 only needs to be attached to the article 91 in a state that it can be handled integrally with the article 91, and there are various ways in which the electronic tag 92 can be attached to the article 91. In this embodiment, as an example, the electronic tag 92 is in the form of a sticker and is attached to the article 91. In addition, for example, the electronic tag 92 may be connected to the article 91 with a string or the like, may be integrated into the packaging material of the article 91, may be embedded in the article 91, or may be embedded in the article 91. may be incorporated into. Further, the electronic tag 92 may be formed directly on the surface of the article 91 itself or the packaging material of the article 91 by printing, for example, by using a coating type semiconductor technique or the like.

The reading device 4 transmits radio waves from the antenna 21 of the antenna module 2 to the electronic tag 92, and performs wireless communication with the electronic tag 92 activated by the radio waves using radio waves as a communication medium. In this embodiment, since the reading device 4 acquires article information from the electronic tag 92, the reading device 4 receives information including at least article information from the electronic tag 92 when wireless communication is established with the electronic tag 92.

The main computer 101 is a computer system mainly composed of one or more processors and memory as hardware. In this main computer 101, various functions are realized by executing programs recorded in memory using one or more processors. The program may be pre-recorded in the memory of the main computer 101, provided through a telecommunications line, or provided recorded on a non-transitory recording medium readable by the computer system, such as an optical disk or hard disk drive. It's okay.

A reading device 4, a detection device 102, an authentication device 103, and a user interface 104 are connected to the main computer 101. Furthermore, the main computer 101 is configured to be able to communicate with the payment system 6. The payment system 6 is a system that performs payment for items 91 purchased by a customer 90. "Settlement" in this disclosure refers to the payment on the buyer's side that is necessary for the act (sales) of transferring the ownership of the item 91 from the seller to the buyer (customer 90) and paying the consideration (price) for this to the seller. means processing.

In the present disclosure, "communicatable" means that information can be exchanged directly by an appropriate communication method such as wired communication or wireless communication, or indirectly via a network, a repeater, or the like. That is, the main computer 101 of the reading system 100 and the payment system 6 can exchange information with each other. In this embodiment, the payment system 6 is not included in the components of the reading system 100 and storage system 50, but the payment system 6 is included in the components of the reading system 100 and storage system 50. Good too.

Thereby, the main computer 101 executes predetermined processing, such as a transmission process for transmitting information necessary for the payment processing in the payment system 6 to the payment system 6, based on the article information read by the reading device 4. Furthermore, the main computer 101 can control the reading device 4 based on the detection signal generated by the detection device 102, and can perform authentication processing by controlling the authentication device 103.

The detection device 102 detects whether the door body 53 is opened or closed. That is, the detection device 102 can detect that the door body 53 is opened (being in the "open position") and that the door body 53 is closed (being in the "closed position"). The detection device 102 is realized by, for example, a non-contact type sensor such as a reed switch or an optical sensor, or a contact type sensor such as a limit switch.

The authentication device 103 is a device that performs authentication processing for the customer 90. The authentication device 103 authenticates the customer 90 by fingerprint authentication, for example. The authentication device 103 may perform biometric authentication, such as vein authentication, iris authentication, or voiceprint authentication, instead of or in addition to fingerprint authentication. Further, the authentication device 103 is not limited to biometric authentication, and may perform authentication processing by, for example, reading a mobile information terminal (smartphone, etc.) owned by the customer 90, a credit card, or the like.

Here, the storage 5 further includes a locking mechanism that locks the door body 53 in a closed state until the authentication by the authentication device 103 is successfully completed. The locking mechanism may be integrated with the sensing device 102.

For example, the user interface 104 inputs information by accepting operations from the customer 90, and outputs information by displaying various types of information toward the customer 90. In this embodiment, the user interface 104 includes a touch panel display, and receives operations from the customer 90 and displays information to the customer 90 using the touch panel display.

In this embodiment, the user interface 104 is fixed to the door body 53 of the storage 5 together with the authentication device 103. Specifically, the user interface 104 and the authentication device 103 are configured as shown in FIG. It is fixed to the front surface of the door body 53.

Further, the user interface 104 may include, for example, a human sensor (for example, a pyroelectric sensor or a radio wave sensor) that detects the approach of a person (customer 90), an image sensor (camera), and the like. As an example, the user interface 104 can estimate the age, gender, facial expression, etc. of the customer 90 by capturing an image of the customer's 90 face with an image sensor.

By the way, in this embodiment, the storage 5 shields the space (internal space Sp1) in which the articles 91 are stored from the outside air. The reading device 4 is arranged outside the storage 5. That is, the storage 5 has airtightness, and the internal space Sp1 of the storage 5 is shielded from the air outside the storage 5 (outside air). However, the storage 5 only needs to have a structure that covers the internal space Sp1 from all directions, and it is not essential that the internal space Sp1 of the storage 5 is completely shielded from the outside of the storage 5. . For example, the housing 5 may have a structure such that a part of the air in the internal space Sp1 leaks to the outside of the housing 5.

The reading device 4 is not placed in the internal space Sp1, but is placed outside the storage 5 shielded from the internal space Sp1. This makes it easier to suppress stress caused by the environment (temperature, gas, etc.) in the internal space Sp1 of the housing 5 from acting on the electronic components and the like of the reading device 4. In particular, in this embodiment, since the storage 5 has a refrigeration function, it is easy to prevent frost, dew, etc. from adhering to the electronic components of the reading device 4 and the like.

Specifically, in this embodiment, the reading device 4 is placed on the top surface of the housing 52 (the top surface of the roof portion 522) together with the main computer 101. Here, in the storage 5, an electrical device such as a compressor that also serves as a heat generation source is housed in the base portion 521 or the roof portion 522, so the reading device 4 and the main computer 101 are protected from the influence of heat from the heat generation source. It is preferable that the arrangement or structure is such that it is not easily affected. Further, on the upper surface of the housing 52 (the upper surface of the roof portion 522), devices other than the reading device 4 and the main computer 101, such as a power supply device and communication equipment, can also be appropriately arranged.

In this embodiment, the antenna module 2 is arranged in the internal space Sp1 of the storage 5, so the cable 24 (see FIG. 7) connected to the antenna module 2 is connected to the casing 52 in which the reading device 4 is installed. It is drawn into the internal space Sp1 of the storage 5 from above.

(2.2) Example of use of storage system Next, an example of use of the storage system 50 according to the present embodiment will be described with reference to FIGS. 6A to 6C.

Here, it is assumed that the customer 90 takes out and purchases one or more desired articles 91 from the storage 5 in which a plurality of articles 91 such as plastic bottle drinks are stored. That is, the customer 90 selects and purchases one or more articles 91 from among the plurality of articles 91 stored in the storage warehouse 5 in advance. Further, here, it is assumed that the customer's 90 information including payment information specific to a credit card, electronic money, prepaid card, etc. is registered in advance in the payment system 6.

First, the storage system 50 performs authentication processing for the customer 90 using the authentication device 103, as shown in FIG. 6A. In this state, the door body 53 is locked in the closed state by the lock mechanism. If the customer 90 has been registered and the authentication process for the customer 90 is successfully completed (that is, if the authentication is successful), the storage system 50 unlocks the door body 53 by the locking mechanism. In this state where the door body 53 is closed, the storage system 50 causes the reading device 4 to read the article information, for example, periodically. The open/closed state of the door body 53 is detected by the detection device 102, so if the detection device 102 outputs a detection signal indicating that the door body 53 is in the “closed position”, the main computer 101 For example, the reading device 4 is caused to read the article information periodically.

Thereafter, as shown in FIG. 6B, the customer 90 opens the door 53 and takes out the desired article 91 from the internal space Sp1 of the storage 5. At this time, the customer 90 may take out only one article 91, or may take out two or more articles 91. Furthermore, if the desired article 91 is not available, the customer 90 does not have to take out the article 91. In this state where the door body 53 is open, the storage system 50 stops the reading device 4 from reading the article information. That is, when the detection device 102 outputs a detection signal indicating that the door body 53 is in the "open position", the main computer 101 causes the reading device 4 to stop reading the article information.

Thereafter, as shown in FIG. 6C, the customer 90 closes the door body 53 while holding the removed article 91 in his hand. When a detection signal indicating that the door body 53 has moved from the "open position" to the "closed position" is output from the detection device 102, the main computer 101 causes the reading device 4 to read the article information. At this time, the storage system 50 uses the main computer 101 to specify the article information of the article 91 taken out from the storage 5 by the customer 90. Specifically, the main computer 101 calculates the difference between the articles 91 present in the storage warehouse 5 before and after the customer 90 opens the door body 53 and accesses the internal space Sp1 of the storage warehouse 5.

That is, the main computer 101 acquires the article information list read by the reading device 4 from the reading device 4 as the first list at a time point before the customer 90 opens the door body 53 (time point in FIG. 6A). . Furthermore, the main computer 101 acquires the article information list read by the reading device 4 from the reading device 4 as a second list at the time after the customer 90 closes the door body 53 (time of FIG. 6C). do. The main computer 101 calculates the difference between the first list and the second list obtained in this way, that is, the information on the articles included in the first list and not included in the second list, thereby determining the article taken out by the customer 90. Identify 91. In other words, in the main computer 101, the item 91 to be purchased, which the customer 90 has taken out from the storage 5, the item 91 whose item information is included in the first list but whose item information is not included in the second list. .

When the item 91 to be purchased is specified, the storage system 50 displays on the user interface 104 a confirmation screen that includes a purchase list that is a list of information about the item 91 to be purchased. The customer 90 checks the purchase list and, if there is no problem, operates the "purchase button" on the confirmation screen. When the "purchase button" is operated on the user interface 104, the storage system 50 transmits the article information of the article 91 to be purchased to the payment system 6. Since the customer 90 has been identified in the authentication process, the payment system 6 uses the customer's 90 payment information to execute the payment process for the item 91 to be purchased.

Here, when the reading device 4 reads the article information, the plurality of antenna modules 2 included in the antenna system 10 are not used simultaneously, but the antenna modules 2 are used one by one in sequence. It is preferable. As an example, the reading device 4 performs wireless communication with the electronic tag 92 by using the first, second, third, fourth, and fifth antenna modules 2 in this order. Further, for example, for the three antenna modules 2a, 2b, and 2c on the same stage, the reading device 4 uses the antenna module 2a, the antenna module 2c, and the antenna module 2b in this order to perform wireless communication with the electronic tag 92. conduct. As a result, the first stage antenna module 2a, antenna module 2c, antenna module 2b, second stage antenna module 2a, antenna module 2c, and antenna module 2b are used for wireless communication in this order.

By the way, in the present embodiment, as a method of displaying the plurality of articles 91 in the storage warehouse 5, the plurality of articles 91 are displayed so that the surface of the plurality of articles 91 to which the electronic tag 92 is attached faces upward. (See Figure 3, etc.). In other words, the electronic tag 92 is attached to the top surface of the article 91. As in this embodiment, when the article 91 is a PET bottle beverage, an electronic tag 92 is attached to the top surface of the cap of the PET bottle. However, it is not essential in the storage system 50 that all the articles 91 stored in the storage 5 have electronic tags 92 attached to their upper surfaces. That is, for some of the articles 91 stored in the storage 5, the electronic tag 92 may be attached to a surface other than the top surface, such as a side surface or a lower surface (bottom surface).

The manner in which the electronic tag 92 is attached to the top surface of the article 91 in this manner is not limited to the storage system 50 according to the present embodiment, but can be adopted in various storage systems. That is, the antenna system 10 is not limited to a configuration including the position adjustment unit 3 as in this embodiment, but even a configuration in which the antenna module 2 is fixed at a fixed position in the storage 5 can be used to An embodiment in which the tag 92 is attached to the upper surface of the article 91 may be adopted.

(2.3) Configuration of antenna module Next, the configuration of the antenna module 2 will be described with reference to FIG. 7.

The antenna module 2 includes an antenna 21 and a package 22. Package 22 covers antenna 21.

The antenna 21 transmits and receives radio waves serving as a communication medium to and from the electronic tag 92 to perform wireless communication. That is, in the present embodiment, the antenna 21 transmits and receives radio waves to and from the internal space Sp1 of the storage 5, where the articles 91 with the electronic tags 92 are stored. The antenna 21 may be a circularly polarized wave antenna or a linearly polarized wave antenna, but in this embodiment, as an example, a circularly polarized wave antenna is used. The antenna 21 is, for example, a microstrip antenna (patch antenna) in which a conductive path is formed on a printed wiring board.

In this embodiment, the package 22 includes a back plate 221, a frame 222, and a front plate 223. The package 22 as a whole is formed into a plate shape, with the thickness direction being the direction in which the back plate 221 and the front plate 223 face each other. Here, as an example, the back plate 221 is made of metal, and the frame body 222 and the front plate 223 are made of resin. The frame body 222 is formed into a substantially rectangular frame shape. The back plate 221 and the front plate 223 are combined with the frame 222 with the frame 222 sandwiched therebetween. As a result, a space is created between the facing surfaces of the back plate 221 and the front plate 223 and in a region surrounded by the frame 222. The package 22 covers the antenna 21 by accommodating the antenna 21 in this space. That is, the package 22 in this embodiment is a thin box-shaped case that houses the antenna 21.

Here, the antenna 21 is removably attached to the package 22. That is, since the antenna 21 is separate from the package 22, the antenna 21 can be removed from the package 22. As a result, when it becomes necessary to replace the antenna 21 due to, for example, a failure of the antenna 21 or a change in the specifications of the antenna 21, it becomes possible to replace only the antenna 21 while reusing the package 22.

Further, the antenna 21 is connected to the reading device 4 via a cable 24. The package 22 covers the connecting portion 23 of the antenna 21 with the cable 24 . That is, the antenna module 2 is connected to the reading device 4 by a cable 24 drawn out from the package 22. In this embodiment, as an example, the connecting portion 23 is a connector fixed to the antenna 21, and is housed in the package 22 together with the antenna 21. The cable 24 is removably connected to the antenna 21 through a connector (connection section 23). Therefore, in the antenna module 2, it is possible to replace only the antenna 21 while leaving the cable 24 drawn into the package 22.

Here, a gap is provided between at least one pair of opposing surfaces of the antenna 21 and the package 22. In this embodiment, a gap is provided between the surface of the back plate 221 of the package 22 that faces the antenna 21 and the surface of the antenna 21 that faces the back board 221. In other words, the antenna 21 is housed in the package 22 so as to be spaced apart from the back plate 221 by a predetermined distance. The distance between the antenna 21 and the back plate 221 is preferably 3 mm or more, for example. The gap does not need to be a space; for example, the gap may be filled with a potting resin or the like having electrical insulation properties.

The antenna module 2 also includes an avoidance section 25. The avoidance unit 25 is a structure for avoiding interference between the antenna module 2 and an obstacle inside the storage 5 when the antenna module 2 is attached to the storage 5. The "obstacle" in the present disclosure is, for example, a structure protruding into the internal space Sp1 of the storage 5, such as the mounting table 51, the hook 511, the shelf pillar 54, etc. As an example, in the example of FIG. 5, in the second stage antenna module 2a, interference with the hook 511 for supporting the first stage mounting table 51 is avoided by the avoidance part 25. This makes it possible to mount the antenna module 2 as high as possible. That is, for example, the second-stage antenna module 2a can be mounted as close to the first-stage mounting table 51 as possible.

In this embodiment, avoidance portions 25 consisting of depressions provided on the outer peripheral surface of the antenna module 2 are formed at the upper left corner and the upper right corner when the antenna module 2 is viewed from the front plate 223 side. In other words, the antenna module 2 is formed in a shape in which both the upper left corner and the upper right corner are missing due to the avoidance part 25. The avoidance portion 25 is formed over the entire package 22, that is, the back plate 221, the frame body 222, and the front plate 223. However, the avoidance section 25 is provided only in the antenna modules 2a and 2b among the three antenna modules 2a, 2b, and 2c lined up in the horizontal direction, and the avoidance section 25 is not provided in the antenna module 2c.

(2.4) Configuration of Antenna System Next, the configuration of the antenna system 10 will be described with reference to FIGS. 8A to 11.

In this embodiment, of the three antenna modules 2a, 2b, 2c arranged in the horizontal direction, only the antenna modules 2a, 2b are directly attached to the storage 5. The antenna module 2c is indirectly attached to the storage 5 by being connected to the antenna modules 2a and 2b by a connecting member 26 (see FIG. 11). Therefore, in the following, the antenna modules 2a and 2b that are directly attached to the housing 5 will be explained with reference to FIGS. 8A to 9C, and then the antenna module 2c will be explained with reference to FIGS. 10 and 11. explain.

Here, regarding attachment to the storage 5, the antenna modules 2a and 2b have a common configuration. Therefore, although only the antenna module 2b is illustrated in FIGS. 8A and 8B, the same configuration is also adopted for the antenna module 2a. Furthermore, although only the antenna module 2a is illustrated in FIGS. 9A to 9C, the same configuration is also adopted for the antenna module 2b.

As shown in FIGS. 8A and 8B, the antenna module 2 is attached to the storage 5 using the shelf pillar 54 of the storage 5. That is, the antenna system 10 according to the present embodiment is configured such that the mounting position of the antenna module 2 with respect to the storage 5 can be changed using the same method as the partition part (mounting table 51) of the storage 5. Therefore, the antenna module 2 is attached to the two shelf posts 54 fixed to the inner surface 520 of the wall 523b (or the wall 523a). Thereby, the mounting position of the antenna module 2 with respect to the storage 5 can be changed in stages in the vertical direction. In short, the antenna module 2 is attached to the storage 5 made of a refrigerator (including a refrigerated showcase) using the existing hook shape etc. in the storage 5 so that the mounting position with respect to the storage 5 can be adjusted. .

That is, the antenna module 2 is attached to the housing 52 by using any one of the plurality of attachment target parts 55 on the shelf post 54. Here, the antenna module 2 is fixed so as to be hooked onto the pair of attachment target parts 55 using a pair of attachment target parts 55 located on both sides of one attachment target part 55 in the vertical direction. Therefore, the mounting position of the antenna module 2 with respect to the housing 5 is changed depending on which of the plurality of mounting target parts 55 the antenna module 2 is attached to. For example, as shown in FIGS. 8A and 8B, when three antenna modules 2 in the first, second, and third stages are installed in the storage 5, these antenna modules 2 are placed at appropriate intervals. It can be attached to the storage 5.

More specifically, as shown in FIGS. 9A to 9C, the position adjustment unit 3 attaches the antenna module 2 to the storage 5 in a state where the attachment position of the antenna module 2 to the storage 5 can be changed. In this embodiment, the position adjustment section 3 has a mounting section 31 provided on the antenna module 2. The position adjustment unit 3 changes the attachment position of the antenna module 2 with respect to the storage 5 by changing the attachment position of the attachment portion 31 with respect to the attachment target portion 55 provided on the inner surface 520 of the storage 5. FIG. 9B is an enlarged partially cutaway view of region Z1 in FIG. 9A. FIG. 9C is a partially cutaway enlarged view of region Z2 in FIG. 9A.

Here, as shown in FIG. 9A, four attachment parts 31 are provided for one antenna module 2. In this embodiment, these four attachment parts 31 are integrated with the package 22 of the antenna module 2. Specifically, each attachment part 31 is realized by cutting and raising a part of the back plate 221 made of a metal plate. These attachment parts 31 basically have the same structure as the attachment structure to the attachment target part 55 in the hook 511 (see FIG. 5) for supporting the mounting table 51.

Hereinafter, the two mounting sections 31 arranged in the vertical direction may be distinguished as an upper mounting section 311 and a lower mounting section 312. The upper mounting part 311 is located above the lower mounting part 312, and, as shown in FIG. 9B, protrudes from the back plate 221 of the antenna module 2, and has a shape in which its tip extends upward. There is. On the other hand, the lower mounting part 312 is located below the upper mounting part 311, and as shown in FIG. 9C, it protrudes from the back plate 221 of the antenna module 2 and has a shape in which its tip extends downward. has been done. That is, the antenna module 2 is provided with a pair of upper mounting parts 311 arranged in the horizontal direction and a pair of lower mounting parts 312 arranged in the horizontal direction.

Here, the antenna module 2 is attached to the storage 5 by hooking the attachment part 31 to the attachment target part 55, as shown in FIGS. 9A to 9C. As described above, the inner surface 520 of the storage 5 is provided with a plurality of attachment target parts 55. The position adjustment unit 3 changes the mounting position of the antenna module 2 with respect to the housing 5 depending on which of the plurality of mounting target parts 55 the mounting part 31 is hooked to.

Specifically, when the upper attachment part 311 is inserted into the attachment target part 55 , it is caught on the upper edge of the attachment target part 55 on the shelf pillar 54 , thereby causing the upper attachment part 311 to move in the direction of coming out from the attachment target part 55 . Movement will be regulated. When the lower attachment part 312 is inserted into the attachment target part 55, it is caught on the lower edge of the attachment target part 55 on the shelf pillar 54, thereby restricting its movement in the direction of coming out of the attachment target part 55. Ru. Then, the antenna module 2 is attached to the storage 5 by all of the four attachment parts 31 provided on the antenna module 2 being caught on the attachment target parts 55 of the storage 5.

In this way, the antenna module 2 is attached to the housing 5 by having the attachment part 31 hooked to one of the attachment target parts 55. Therefore, by changing the attachment target part 55 on which the attachment part 31 is hooked, , the mounting position can be changed. That is, with this configuration, the mounting position of the antenna module 2 with respect to the housing 5 can be changed depending on which of the plurality of mounting target parts 55 the mounting part 31 is hooked onto. For example, by shifting the attachment target section 55 to which the attachment section 31 is attached downward by the distance between the attachment target sections 55, the antenna module 2 moves downward by the distance between the attachment target sections 55. Similarly, by shifting the attachment target section 55 to which the attachment section 31 is attached upward by the distance between the attachment target sections 55, the antenna module 2 moves upward by the distance between the attachment target sections 55.

By the way, in this embodiment, as described above, the position of the partition part (placing table 51) for dividing the internal space Sp1 of the storage 5 into a plurality of areas is variable. The position adjustment section 3 can change the mounting position of the antenna module 2 in the direction in which the partition section (mounting table 51) moves. That is, since the antenna module 2 is attached to the storage 5 using the shelf pillars 54 of the storage 5 in the same way as the mounting table 51 which is a partition, the antenna module 2 is attached in the direction in which the partition moves. The position can be changed. In short, the mounting position of the antenna module 2 can be changed in the vertical direction, which is the direction in which the mounting table 51 moves.

Therefore, for example, when the position of the mounting table 51 is changed according to the height of the article 91, etc., the mounting position of the antenna module 2 can also be changed according to the movement of the mounting table 51. As an example, if the height of the article 91 placed on the first stage mounting table 51 becomes shorter, the first stage mounting table 51 may be moved upward by that amount; The antenna module 2 may also be moved upward.

Next, the antenna module 2c will be explained with reference to FIGS. 10 and 11. In FIG. 11, illustration of a part of the housing 52 and the door body 53 (wall portions 523a, 523b, 523c, etc.) is omitted, and the outer shape of the inner surface 520 is shown with an imaginary line (two-dot chain line).

As described above, the antenna module 2 (antenna module 2c) is indirectly attached to the storage 5 by being connected to the antenna modules 2a and 2b by the connecting member 26. That is, in this embodiment, there are multiple antenna modules 2. The antenna system 10 further includes a connecting member 26 that connects the plurality of antenna modules 2 to each other. The attachment portion 31 is provided on at least one antenna module 2 among the plurality of antenna modules 2 connected by the connection member 26.

Specifically, in this embodiment, a pair of connecting members 26 protrude from the antenna module 2 (antenna module 2c) toward both sides in the left-right direction when viewing the storage 5 from the front. The connecting member 26 is integrated with the back plate 221 of the antenna module 2 (antenna module 2c), and has rigidity itself. A first connecting piece 261 is provided at the tip of each connecting member 26 . The first connecting piece 261 is coupled to a second connecting piece 262 (see FIG. 7) provided on the antenna modules 2a and 2b, for example, by a screw. The second connecting piece 262 is integrated with the back plate 221 of the antenna modules 2a, 2b. The antenna module 2a is coupled to the tip (first coupling piece 261) of the coupling member 26 that protrudes leftward from the antenna module 2 (antenna module 2c). The antenna module 2b is coupled to the tip (first coupling piece 261) of the coupling member 26 that protrudes rightward from the antenna module 2 (antenna module 2c). Thereby, the three antenna modules 2a, 2b, 2c arranged in the horizontal direction are all connected by the connecting member 26.

Furthermore, the connecting member 26 has a crank portion 263, as shown in FIG. The crank portion 263 is formed in a shape to avoid interference with a duct through which the cable 24, control lines, etc. are passed, which is located in the back right of the storage 5 when viewed from the front. Furthermore, a shallow crank shape is also adopted for the connecting member 26 on the left side when viewing the housing 5 from the front, and this allows the duct for passing refrigerant etc. to be located at the back right when viewing the housing 5 from the front. interference between the connecting member 26 and the connecting member 26 is avoided.

Further, a cable duct 27 for passing the cable 24 is fixed to the connecting member 26. In other words, the cables drawn from the crank part 263 into the internal space Sp1 of the housing 5 can also be routed to the antenna modules 2a, 2c by passing through the cable duct 27 without being exposed to the internal space Sp1 of the housing 5. can.

Here, as shown in FIG. 11, the mounting portion 31 is provided only on some of the antenna modules 2a, 2b among the plurality of antenna modules 2a, 2b, 2c connected by the connecting member 26. That is, in this embodiment, as described above, among the three antenna modules 2a, 2b, and 2c arranged in the horizontal direction, only the antenna modules 2a and 2b are directly attached to the storage 5. The antenna module 2c connected to the antenna modules 2a, 2b by the connecting member 26 is indirectly attached to the storage 5 via the antenna modules 2a, 2b. In short, like the avoidance part 25, the attachment part 31 is provided only in the antenna modules 2a, 2b among the three antenna modules 2a, 2b, 2c, and the attachment part 31 is not provided in the antenna module 2c.

(2.5) Antenna Installation Method Next, the installation method (antenna installation method) of the antenna module 2 described above will be described with reference to the flowchart in FIG. 12. Here, an example will be shown in which a worker installs the antenna module 2. The worker may be a person who supplies the storage system 50 or a user of the storage system 50.

The operator first attaches the antenna module 2 to an appropriate position within the storage 5 (S1). At this time, basically, the mounting position of the antenna module 2 is determined according to the position of the mounting table 51 in the storage 5. It is preferable that the operator attaches the antenna module 2 with the three antenna modules 2a, 2b, and 2c arranged in the horizontal direction connected in advance using the connecting member 26.

After that, unless the mounting table 51 is to be moved (S2: No), the mounting position of the antenna module 2 is not changed. On the other hand, if the mounting table 51 is to be moved due to, for example, replacing the articles 91 (commodities) stored in the storage 5 (S2: Yes), the operator changes the mounting position of the antenna module 2. . That is, the operator first removes the antenna module 2 from the storage 5 (S3). Then, depending on whether the moving direction of the mounting table 51 is upward (S4), the mounting position of the antenna module 2 is determined.

For example, if the moving direction of the mounting table 51 is upward (S4: Yes), the operator moves the antenna module 2 upward from its original position (the position before removal) while moving the mounting table 51 upward. Attach (S5). That is, the operator moves the antenna module 2 upward together with the mounting table 51. On the other hand, if the moving direction of the mounting table 51 is downward (S4: No), the operator moves the antenna module 2 downward from its original position (the position before removal) while moving the mounting table 51 downward. Attach it (S6). That is, the operator moves the antenna module 2 downward together with the mounting table 51.

The operator repeatedly performs the above series of processes S1 to S6. In short, the antenna installation method according to this embodiment is a method for installing at least one antenna module 2 that is used in the reading device 4 and includes the antenna 21 that receives radio waves. The reading device 4 reads article information by performing wireless communication using radio waves as a medium with an electronic tag 92 attached to at least one article 91 stored in the storage warehouse 5 . This antenna installation method includes the steps of attaching the antenna module 2 to the storage 5 (S1, S5, S6) in a state where the attachment position of the antenna module 2 to the storage 5 can be changed.

Here, when attaching the antenna module 2 to the storage 5 (S1, S5, S6), first hook the upper attachment part 311 onto the attachment target part 55, and then hook the lower attachment part 312 onto the attachment target part 55. All you have to do is operate the antenna module 2 so as to hook it. That is, after hooking the upper attachment part 311 to the attachment target part 55, the operator operates the antenna module 2 so as to hook the lower attachment part 312 to the attachment target part 55 while sliding the antenna module 2 downward. .

When removing the antenna module 2 from the housing 5 (S3), first release the lower attachment part 312 from the attachment target part 55, and then release the upper attachment part 311 from the attachment target part 55. Then, the antenna module 2 can be operated. In other words, while sliding the antenna module 2 upward, the operator releases the lower attachment part 312 from the attachment target part 55 and then moves the antenna so as to release the upper attachment part 311 from the attachment target part 55. Operate module 2.

According to the antenna installation method as described above, the mounting position of the antenna module 2 with respect to the housing 5 can be changed relatively easily without requiring special skills. Furthermore, according to the above-described antenna installation method, it is also possible to install the reading system 100 using an existing refrigerator as the housing 5, for example. That is, by retrofitting the antenna module 2 to the existing storage 5, the antenna system 10 can be easily introduced.

Of course, the antenna module 2 is not limited to being retrofitted; for example, the antenna system 10 according to the present embodiment may be applied to a housing 5 with an antenna module 2 to which the antenna module 2 has already been installed from the factory. good.

(3) Modifications Embodiment 1 is only one of various embodiments of the present disclosure. Embodiment 1 can be modified in various ways depending on the design, etc., as long as the objective of the present disclosure can be achieved. Modifications of the first embodiment will be listed below. The modified examples described below can be applied in combination as appropriate.

The reading system 100 and storage system 50 in the present disclosure include a computer system, for example, in the main computer 101 or the like. A computer system mainly consists of a processor and a memory as hardware. The functions of the reading system 100 and storage system 50 in the present disclosure are realized by a processor executing a program recorded in the memory of the computer system. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunications line, or may be recorded on a non-transitory storage medium readable by the computer system, such as a memory card, optical disc, hard disk drive, etc. may be provided. A processor in a computer system is comprised of one or more electronic circuits including semiconductor integrated circuits (ICs) or large scale integrated circuits (LSIs). The integrated circuits such as IC or LSI referred to herein have different names depending on the degree of integration, and include integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). Furthermore, an FPGA (Field-Programmable Gate Array), which is programmed after the LSI is manufactured, or a logic device that can reconfigure the connections inside the LSI or reconfigure the circuit sections inside the LSI, may also be used as a processor. I can do it. The plurality of electronic circuits may be integrated into one chip, or may be provided in a distributed manner over a plurality of chips. A plurality of chips may be integrated into one device, or may be distributed and provided in a plurality of devices. The computer system herein includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller is also composed of one or more electronic circuits including semiconductor integrated circuits or large-scale integrated circuits.

Moreover, it is not an essential configuration for the reading system 100 or the storage system 50 that a plurality of functions in the reading system 100 or the storage system 50 are integrated into one housing. The components of the reading system 100 or the storage system 50 may be distributed and provided in a plurality of housings. Furthermore, at least part of the functions of the reading system 100 or the storage system 50 may be realized by, for example, a server device, a cloud (cloud computing), or the like. On the contrary, in the first embodiment, at least some of the functions of the reading system 100 or the storage system 50 that are distributed over a plurality of devices may be integrated into one housing.

By the way, regarding the configuration of the position adjustment section 3, the configuration shown in the first embodiment is only an example, and can be changed as appropriate. For example, in the first embodiment, the attachment target portion 55 is a through hole and the attachment portion 31 is inserted into the attachment target portion 55, but the relationship between the two may be reversed. That is, the attachment part 31 may be a through hole, and the attachment target part 55 may be inserted into the attachment part 31 so that the attachment part 31 is caught on the attachment target part 55.

In addition to hooking the mounting portion 31 onto the mounting target portion 55, the antenna module 2 may be mounted using magnetic force, electrostatic force, or adhesive force, or using fasteners such as screws and nuts. There are two methods: one using pneumatic pressure such as a suction cup, and the other using pneumatic pressure such as a suction cup. For example, an embodiment using magnetic force can be realized by adding a permanent magnet to the back plate 221 of the antenna module 2. In this case, by configuring the walls 523a, 523b, and 523c of the housing 5 with magnetic materials such as iron plates, the antenna module 2 can be attached to any position on the inner surface 520 of the housing 5 using the magnetic force of the permanent magnet. Become. Alternatively, a slide rail may be provided on the inner surface 520 of the housing 5, and the mounting portion 31 may be configured to slide on the slide rail.

The direction in which the mounting position of the antenna module 2 is changed by the position adjustment unit 3 is not limited to the vertical direction, but may be, for example, the horizontal direction. For example, if the housing 5 is an open type refrigerator or the like with an open top surface, the antenna module 2 can be attached to the housing 5 by hooking it onto the upper end of the side wall of the housing 5. Bye. In this case, the mounting position of the antenna module 2 can be changed in the horizontal direction by horizontally moving the hooking position with respect to the side wall of the storage 5.

Furthermore, the reading system 100 and the storage system 50 are not limited to offices, but can also be installed in facilities such as factories, stations, schools, retail stores such as convenience stores and supermarkets, welfare facilities, hospitals, and gymnasiums. good. Furthermore, the reading system 100 and the storage system 50 are not limited to being installed indoors, but may be installed outdoors.

In addition, the articles 91 stored in the storage 5 are not limited to beverages in plastic bottles and cans, but include food and beverages such as beverages in paper packs, seasonings in plastic bottles, sweets in boxes, and sweets in bags. Good too. Furthermore, the article 91 is not limited to food and drink, but may be daily necessities such as ink cartridges for printers, or other articles.

Further, the door body 53 is not limited to a swing door, but may be a sliding door, for example. Further, the door body 53 is not limited to being made of glass, and may be made of resin, for example. It is not essential for the antenna system 10 that the door body 53 has optical transparency, and the door body 53 does not need to have optical transparency.

Further, the avoidance unit 25 may have any structure as long as it has a structure for avoiding interference between the antenna module 2 and obstacles in the storage 5 when the antenna module 2 is attached to the storage 5, and in the first embodiment It is not limited to the illustrated shape. For example, the avoidance portion 25 may be a through hole that penetrates the antenna module 2 in the thickness direction, or may be a depression provided in the center of one of the four sides of the antenna module 2. Good too.

Further, the user interface 104 is not limited to a touch panel display, and may include an input device such as a keyboard, a pointing device, a mechanical switch, or a gesture sensor. Furthermore, the user interface 104 may include a display device such as a projector that projects images using projection mapping technology, for example. Further, the user interface 104 may include an audio input/output unit instead of the touch panel display or in addition to the touch panel display. In this case, the user interface 104 can present various information to the customer 90 using audio output from the speaker. Furthermore, the user interface 104 performs voice recognition and semantic analysis processing on the voice signal output from the microphone, thereby enabling the customer 90 to operate by voice (voice input).

Further, the reading device 4 only needs to be placed outside the housing 5, and is not limited to being placed on the top surface of the housing 52 (the top surface of the roof portion 522). It's okay. Furthermore, the reading device 4 may be arranged inside the storage 5 (internal space Sp1).

Moreover, the package 22 of the antenna module 2 may have a structure that covers the antenna 21, and is not limited to a thin box-shaped case. For example, the package 22 may be realized by a pouch, a bag, a sealing resin, or the like.

Further, the antenna 21 is not limited to a microstrip antenna, and may be, for example, a monopole antenna, an inverted F-type antenna, a slot antenna, or the like. The antenna 21 is not limited to a circularly polarized wave antenna, and may be an elliptically polarized wave antenna, a linearly polarized wave antenna, or the like.

Further, the attachment target portion 55 is not limited to the configuration provided on the shelf pillar 54, but may be provided directly on the inner surface 520 of the storage 5. For example, when the attachment target part 55 is a through hole, the through hole as the attachment target part 55 is formed not in the shelf pillar 54 but directly in the inner surface 520 of the storage 5. In this case, the attachment part 31 will be caught in the through hole (attachment target part 55) formed on the inner surface 520. Even if the attachment part 31 is not hooked onto the attachment target part 55, the attachment target part 55 may be provided directly on the inner surface 520 of the storage 5.

Further, instead of or in addition to the configuration in which the plurality of antenna modules 2 arranged in the horizontal direction are connected to each other, the connection member 26 may adopt a structure in which the plurality of antenna modules 2 arranged in the vertical direction are connected to each other. For example, when the first-stage antenna module 2 and the second-stage antenna module 2 are connected by the connecting member 26, the first-stage antenna module 2 is simply attached to the housing 5, and the second-stage antenna module 2 is connected to the second-stage antenna module 2. The module 2 is also indirectly attached to the storage 5.

Further, the electronic tag 92 is not limited to a passive RF tag, but may be an active RF tag. The reading device 4 may read article information by combining means such as image recognition with information read from the electronic tag 92.

Furthermore, the ability of the main computer 101 to communicate with the payment system 6 is not an essential configuration for the reading system 100 and the storage system 50, and the main computer 101 does not need to be able to communicate with the payment system 6. For example, the main computer 101 itself may have a function of performing payment processing for the item 91 based on item information.

Further, the reading system 100 and the storage system 50 may further include a writing device that writes writing information to the electronic tag 92 attached to the article 91. Specifically, the reading device 4, which is a reader/writer capable of reading and writing data (information) to the electronic tag 92, may also be used as a writing device. For example, the writing device writes information such as time limit management for the article 91 to which the electronic tag 92 is attached to the electronic tag 92.

Further, the electrical devices such as the compressor in the storage warehouse 5 are not limited to being housed in the base portion 521 or the roof portion 522, and may be housed in a separate casing from the casing 52.

Furthermore, the connection portion 23 is not limited to a connector. For example, when the cable 24 is directly connected to a printed wiring board in the antenna 21, the connection point with the cable 24 on the printed wiring board becomes the connection portion 23. . Even in this case, it is preferable that the package 22 covers the connecting portion 23 of the antenna 21 with the cable 24. Further, the connecting portion 23 may be, for example, a terminal block or the like to which the cable 24 is connected.

(Embodiment 2)
A reading system 100A and a storage system 50A according to the present embodiment differ from the first embodiment in that, as shown in FIG. 13, the main computer 101 is configured to be able to communicate with the inventory management system 6A. Hereinafter, configurations similar to those in Embodiment 1 will be given the same reference numerals and descriptions will be omitted as appropriate.

In this embodiment, the reading system 100A and the storage system 50A are used, for example, for inventory management and inspection of the articles 91, rather than for sales support. Here, the storage system 50A includes a storage 5A that is not a refrigerated showcase but a refrigerator for storing inventory. Even in such an inventory storage storage 5A (refrigerator), it is necessary to manage the number of stored articles 91, etc. In the reading system 100A according to this embodiment, the authentication device 103 (see FIG. 1) and the user interface 104 (see FIG. 1) are omitted. The antenna system 10A includes a plurality of antenna modules 2 attached to a housing 5A.

Also in this embodiment, the main computer 101 calculates the difference between the articles 91 existing in the storage warehouse 5 before and after the door body 53 is opened and closed. That is, the main computer 101 acquires the article information list read by the reading device 4 from the reading device 4 as the first list before the door body 53 is opened. Further, the main computer 101 acquires the article information list read by the reading device 4 from the reading device 4 as a second list at a time after the door body 53 is closed. The main computer 101 identifies the article 91 taken out from the storage warehouse 5 by determining the difference between the first list and the second list acquired in this way. Furthermore, the main computer 101 can also specify the article 91 added to the storage warehouse 5 through similar processing. For example, even if the application is for sales support, when a worker replenishes an article 91 as a product, it is possible to specify the replenished article 91.

The various configurations described in Embodiment 2 can be employed in appropriate combination with the various configurations (including modified examples) described in Embodiment 1.

(4) Summary As explained above, the antenna system (10, 10A) according to the first aspect includes at least one antenna module (2) and a position adjustment section (3). The antenna module (2) is used for the reading device (4) and includes an antenna (21) that receives radio waves. The reading device (4) acquires article information by performing wireless communication using radio waves with an electronic tag (92) attached to at least one article (91) stored in the storage warehouse (5, 5A). Read. The position adjustment unit (3) attaches the antenna module (2) to the storage (5, 5A) in a state where the attachment position of the antenna module (2) to the storage (5, 5A) can be changed.

According to this aspect, the at least one antenna module (2) is in a state where its mounting position can be changed with respect to the storage (5, 5A) in which the article (91) whose article information is to be read is stored. Then, it is attached by the position adjustment part (3). Therefore, according to the antenna system (10, 10A), the display state of the articles (91), such as the number of articles (91) and the arrangement of the articles (91) in the storage warehouse (5, 5A), can be controlled. At the same time, the mounting position of the antenna module (2) can be adjusted. As a result, the antenna system (10, 10A) can accommodate a greater variety of display states for articles (91).

In the antenna system (10, 10A) according to the second aspect, in the first aspect, the partition part (mounting table 51) for dividing the internal space (Sp1) of the storage (5, 5A) into a plurality of areas The position of is variable. The position adjustment section (3) can change the mounting position of the antenna module (2) in the direction in which the partition section moves.

According to this aspect, the mounting position of the antenna module (2) can be changed according to the position of the partition. Therefore, the attachment position of the antenna module (2) can be appropriately changed even for a plurality of articles (91) housed in a plurality of areas divided by the partitions.

In the antenna system (10, 10A) according to the third aspect, in the first or second aspect, the antenna module (2) includes an antenna (21) and a package (22) that covers the antenna (21). .

According to this aspect, the antenna (21) is protected by the package (22), so damage to the antenna (21) can be suppressed.

In the antenna system (10, 10A) according to the fourth aspect, in the third aspect, the antenna (21) is removably attached to the package (22).

According to this aspect, for example, when it becomes necessary to replace the antenna (21) due to a failure of the antenna (21) or a change in the specifications of the antenna (21), the package (22) can be reused and the antenna can be replaced. It becomes possible to replace only (21).

In the antenna system (10, 10A) according to the fifth aspect, in the third or fourth aspect, the antenna (21) is connected to the reading device (4) by a cable (24). The package (22) covers the connection part (23) of the antenna (21) with the cable (24).

According to this aspect, the connecting portion (23) of the antenna (21) with the cable (24) is also protected by the package (22), so damage to the connecting portion (23) can be suppressed.

In the antenna system (10, 10A) according to the sixth aspect, in any one of the third to fifth aspects, a gap is provided between at least one pair of opposing surfaces of the antenna (21) and the package (22).

According to this aspect, it is possible to suppress interference of radio waves between the antenna (21) and the package (22).

In the antenna system (10, 10A) according to the seventh aspect, in any one of the first to sixth aspects, the position adjustment section (3) has a mounting section (31) provided on the antenna module (2). . The position adjustment part (3) changes the mounting position of the attachment part (31) with respect to the attachment target part (55) provided on the inner surface (520) of the storage compartment (5, 5A). 5A), change the mounting position of the antenna module (2).

According to this aspect, by simply attaching the attachment portion (31) provided on the antenna module (2) to the attachment target portion (55) provided on the inner surface (520) of the housing (5, 5A), the antenna The mounting position of module (2) can be adjusted.

In the antenna system (10, 10A) according to the eighth aspect, in the seventh aspect, the antenna module (2) is attached to the housing (5, 5A) by hooking the attachment part (31) to the attachment target part (55). ). A plurality of attachment target parts (55) are provided on the inner surface (520) of the storage (5, 5A). The position adjustment unit (3) adjusts the position of the antenna module (2) relative to the housing (5, 5A) depending on which of the plurality of attachment target parts (55) the attachment part (31) is hooked to. ) change the mounting position.

According to this aspect, the attachment portion (31) provided on the antenna module (2) is hooked to any of the plurality of attachment target portions (55) provided on the inner surface (520) of the housing (5, 5A). Accordingly, the mounting position of the antenna module (2) can be adjusted. Therefore, changing the mounting position of the antenna module (2) becomes relatively easy.

In the antenna system (10, 10A) according to the ninth aspect, there is a plurality of antenna modules (2) in the seventh or eighth aspect. The antenna system (10, 10A) further includes a connecting member (26) that connects the plurality of antenna modules (2). The attachment portion (31) is provided on at least one antenna module (2) among the plurality of antenna modules (2) connected by the connection member (26).

According to this aspect, since the plurality of antenna modules (2) are connected to each other by the connecting member (26), positioning between the plurality of antenna modules (2) becomes relatively easy.

In the antenna system (10, 10A) according to the tenth aspect, in the ninth aspect, the mounting portion (31) is a part of the plurality of antenna modules (2) connected by the connecting member (26). It is provided only in the antenna module (2).

According to this aspect, the mounting portion (31) is not required except for some antenna modules (2) among the plurality of antenna modules (2) connected by the connection member (26). The structure for attaching the plurality of antenna modules (2) to the storage (5, 5A) becomes simple.

In the antenna system (10, 10A) according to the eleventh aspect, in any one of the first to tenth aspects, the antenna module (2) is attached to the housing (5, 5A). , 5A).

According to this aspect, interference between the antenna module (2) and obstacles inside the storage compartment (5, 5A) can be avoided while the antenna module (2) is attached to the storage compartment (5, 5A). It becomes easier.

In the antenna system (10, 10A) according to the twelfth aspect, in any one of the first to eleventh aspects, the storage (5, 5A) shields the space in which the article (91) is stored from the outside air. There is. The reading device (4) is placed outside the storage (5, 5A).

According to this aspect, stress caused by the environment of the internal space (Sp1) of the housing (5, 5A) can be easily suppressed from acting on the electronic components and the like of the reading device (4).

In the antenna system (10, 10A) according to the thirteenth aspect, in any one of the first to twelfth aspects, the electronic tag (92) is attached to the top surface of the article (91).

According to this aspect, even when a plurality of articles (91) are stored side by side in the storage (5, 5A), there are other articles (91) between the electronic tag (92) and the antenna module (2). becomes less likely to intervene. Therefore, it becomes easier to suppress a decrease in the reception level of radio waves due to the electronic tag (92) being in the shadow of the article (91).

In the antenna system (10, 10A) according to the fourteenth aspect, in any one of the first to thirteenth aspects, the storage (5, 5A) includes a mounting table (51) on which the article (91) is placed. .

According to this aspect, the articles (91) can be efficiently placed in the storage (5, 5A).

In the antenna system (10, 10A) according to the fifteenth aspect, in any one of the first to fourteenth aspects, the storage (5, 5A) has a light transmittance and an openable/closable door body (53 ). The door body (53) has radio wave shielding properties.

According to this aspect, leakage of radio waves from the storage compartment (5, 5A) can be suppressed while making the inside of the storage compartment (5, 5A) visible through the door body (53).

A reading system (100, 100A) according to a sixteenth aspect includes an antenna system (10, 10A) according to any one of the first to fifteenth aspects and a reading device (4).

According to this aspect, the at least one antenna module (2) is in a state where its mounting position can be changed with respect to the storage (5, 5A) in which the article (91) whose article information is to be read is stored. Then, it is attached by the position adjustment part (3). Therefore, according to the reading system (100, 100A), for example, the display state of the articles (91), such as the number of articles (91) and the arrangement of the articles (91) in the storage warehouse (5, 5A), can be determined. At the same time, the mounting position of the antenna module (2) can be adjusted. As a result, the reading system (100, 100A) can accommodate a greater variety of display states of articles (91).

The storage system (50, 50A) according to the seventeenth aspect includes the reading system (100, 100A) according to the sixteenth aspect and a storage (5, 5A).

According to this aspect, the at least one antenna module (2) is in a state where its mounting position can be changed with respect to the storage (5, 5A) in which the article (91) whose article information is to be read is stored. Then, it is attached by the position adjustment part (3). Therefore, according to the storage system (50, 50A), the display state of the items (91), such as the number of items (91) and the way the items (91) are arranged, in the storage area (5, 5A), for example. The mounting position of the antenna module (2) can be adjusted accordingly. As a result, the storage system (50, 50A) can accommodate a greater variety of display states for articles (91).

The antenna installation method according to the eighteenth aspect is a method of installing at least one antenna module (2). The antenna module (2) is used for the reading device (4) and includes an antenna (21) that receives radio waves. The reading device (4) acquires article information by performing wireless communication using radio waves with an electronic tag (92) attached to at least one article (91) stored in the storage warehouse (5, 5A). Read. The antenna installation method includes the step of attaching the antenna module (2) to the housing (5, 5A) in a state where the attachment position of the antenna module (2) to the housing (5, 5A) can be changed.

According to this aspect, the at least one antenna module (2) is in a state where its mounting position can be changed with respect to the storage (5, 5A) in which the article (91) whose article information is to be read is stored. Can be installed with. Therefore, according to the antenna installation method, the antenna is adjusted according to the display state of the articles (91), such as the number of articles (91) and the arrangement of the articles (91) in the storage warehouse (5, 5A). The mounting position of the module (2) can be adjusted. As a result, the antenna installation method can accommodate a greater variety of display states for articles (91).

Not limited to the above aspects, various aspects (including modifications) of the antenna system (10, 10A) according to Embodiment 1 and Embodiment 2 can be realized by the antenna installation method.

The configurations according to the second to fifteenth aspects are not essential to the antenna system (10, 10A) and can be omitted as appropriate.

By the way, the configuration of the antenna system (10, 10A) according to the thirteenth aspect does not require the configuration of the first aspect, and can be applied alone.

That is, the method for displaying an article (91) according to the nineteenth aspect is a method of displaying the article (91) with the electronic tag (92) attached to the upper surface of the article (91).

According to this aspect, even when a plurality of articles (91) are stored side by side in the storage (5, 5A) etc., other articles (91) are placed between the electronic tag (92) and the antenna module (2). ) becomes less likely to intervene. Therefore, it becomes easier to suppress a decrease in the reception level of radio waves due to the electronic tag (92) being in the shadow of the article (91).

Further, the configurations according to the second to twelfth, fourteenth, and fifteenth aspects can be applied in combination with the display method according to the nineteenth aspect.

4 Reading device 5, 5A Storage 10, 10A Antenna system 21 Antenna 22 Package 23 Connection part 24 Cable 25 Avoidance part 26 Connection member 31 Mounting part 50, 50A Storage system 51 Mounting table (partition part)
53 Door body
55 Part to be attached 91 Article 92 Electronic tag 100,100A Reading system 520 Inner surface

Claims (8)

Used in a reading device that reads article information by performing wireless communication using radio waves with an electronic tag attached to at least one article stored in a storage warehouse with a temperature control function, and receives the radio waves. at least one antenna module including an antenna;
a position adjustment unit for attaching the antenna module to the storage in a state where the installation position of the antenna module with respect to the storage can be changed;
The storage includes a casing having an opening surface, and a door body that can be opened and closed between a closed position that closes the opening surface of the casing and an open position that opens the opening surface,
The storage is provided with a plurality of attachment target parts to which shelf boards on which the articles are placed can be variably attached in the vertical direction,
The plurality of attachment target parts are arranged at predetermined intervals in a depth direction of an inner surface facing the internal space of the storage storage when viewed from the opening surface,
The position adjustment section is capable of attaching the antenna module to the plurality of attachment target sections.
antenna system. The antenna module has an avoidance part for avoiding interference with a structure protruding into the internal space of the storage in a state where the antenna module is attached to the storage.
An antenna system according to claim 1 . The storage box shields the internal space in which the articles are stored from outside air,
The reading device is installed in a portion of the housing of the housing that is shielded from the internal space,
further comprising a cable connected to the reading device, drawn into the internal space from the outside of the casing, and connected to the antenna;
An antenna system according to claim 1 or 2 . The reading device is installed in the part of the housing of the housing that is shielded from the internal space, with an arrangement or structure that makes it difficult to be affected by heat from a heat source of the housing.
Antenna system according to claim 3 . The storage has a light transmittance and is equipped with a door body that can be opened and closed,
The door body has radio wave shielding properties,
The antenna system according to any one of claims 1 to 4. The antenna system according to any one of claims 1 to 5,
The reading device,
reading system. The reading system according to claim 6,
comprising the storage warehouse;
Storage system. Used in a reading device that reads article information by performing wireless communication using radio waves with an electronic tag attached to at least one article stored in a storage warehouse with a temperature control function, and receives the radio waves. 1. A method of installing at least one antenna module including an antenna, the method comprising:
The storage includes a casing having an opening surface, and a door body that can be opened and closed between a closed position that closes the opening surface of the casing and an open position that opens the opening surface,
The storage is provided with a plurality of attachment target parts to which shelf boards on which the articles are placed can be variably attached in the vertical direction,
The plurality of attachment target parts are arranged at predetermined intervals in a depth direction of an inner surface facing the internal space of the storage storage when viewed from the opening surface,
a step of attaching the antenna module to the plurality of attachment target parts in the storage in a state where the mounting position of the antenna module with respect to the storage can be changed;
Antenna installation method.

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