JP4347243B2 - Wireless communication system and data acquisition method - Google Patents

Description

  The present invention relates to a radio communication system and a data acquisition method capable of accurately designating a desired radio device and reading data from the designated radio device.

In recent years, wireless tags (RF-ID; Radio Frequency Identification) have become widespread and are used for various management. For example, a wireless tag is affixed to an object to be managed such as a product, and product management and the like are performed at a distribution stage and a retail stage by a transceiver (reader / writer, etc.).
At this time, if there is only one product within the communication range of the transceiver, the wireless tag of the communication partner is uniquely determined, but if there are multiple products within the communication range, the tag of any of the wireless tags It is necessary to specify an ID (identification information) and communicate with the wireless tag. Therefore, for example, by attaching a barcode or the like to each wireless tag and reading the barcode value, the tag ID of the wireless tag is acquired, and the acquired tag ID is designated to communicate with the target wireless tag. Is going.

A technique of a collection information processing apparatus that uses a package delivery slip to which such a wireless tag and a barcode are attached is also disclosed (see, for example, Patent Document 1).
JP 2001-80709 A (page 6-11, FIG. 8)

However, the technique of Patent Document 1 can be realized on the premise that the wireless tag (package delivery slip) can be directly touched. Therefore, when the wireless tag cannot be directly touched (it is difficult), it is extremely difficult to read the barcode, and there is a problem that communication with the wireless tag that designates the tag ID cannot be performed.
For example, when the management target object to which the wireless tag is attached is placed in a space isolated from the outside (for example, a clean room or a radioactivity management room), the management target object cannot be touched directly. Therefore, it is difficult to read the barcode.
Even when a wireless tag is affixed to a sensor installed on the ceiling, etc., or a meter device in an apartment house arranged in a row at a high wall, the wireless tag is usually reachable. This makes it difficult to read barcodes.

  Therefore, a technique for acquiring the tag ID of the wireless tag without directly touching the wireless tag has been demanded. In addition, since a plurality of wireless tags (managed objects) are often placed close to each other, a technique for accurately acquiring a tag ID or the like from a target wireless tag has been demanded.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a wireless communication system and a data acquisition method capable of accurately specifying a desired wireless device and reading data from the specified wireless device. .

In order to achieve the above object, a wireless communication system according to a first aspect of the present invention includes:
A wireless communication system including a wireless device attached to a management target and an acquisition device that acquires data from the wireless device,
The wireless device is
Storage means for storing data relating to the management object;
Code transmitting means for transmitting a code assigned corresponding to the wireless device in response to irradiated visible light;
Identification information receiving means for receiving identification information of the wireless device sent from the acquisition device;
In response to the identification information received by the identification information receiving means, data reading means for reading the data stored in the storage means and transmitting to the acquisition device,
The acquisition device includes:
Device information storage means for storing the code and the identification information of the wireless device in association with each other;
Irradiating visible light to the wireless device, code acquisition means for acquiring the code transmitted from the wireless device in response to irradiation of the visible light;
Search means for searching the identification information associated with the code acquired by the code acquisition means from the device information storage means;
Identification information transmitting means for transmitting the identification information searched by the search means to the wireless device;
Data receiving means for receiving the data transmitted from the wireless device in response to the identification information transmitted by the identification information transmitting means,
It is characterized by that.

According to this invention, the storage means of the wireless device stores data related to the management target. The code transmitting means transmits a code assigned corresponding to the wireless device in response to the irradiated visible light. The identification information receiving unit receives identification information (for example, a tag ID) of the wireless device sent from the acquisition device. Then, the data transmission means reads the data stored in the storage means in response to the identification information received by the identification information receiving means and transmits it to the acquisition device.
On the other hand, the device information storage means of the acquisition device stores the code and the identification information of the wireless device in association with each other. The code acquisition means irradiates the wireless device with visible light and acquires a code transmitted from the wireless device in response to the irradiation of the visible light. The search unit searches the device information storage unit for identification information associated with the code acquired by the code acquisition unit. The identification information transmitting means transmits the identification information searched by the searching means to the wireless device. The data receiving unit receives data transmitted from the wireless device in response to the identification information transmitted by the identification information transmitting unit.

Thereby, by irradiating a desired wireless device with visible light, communication processing (communication transaction) between the wireless device and the acquisition device is started, and data stored in the wireless device can be acquired.
In other words, the acquisition device returns a code assigned corresponding to the wireless device from the wireless device irradiated with visible light, acquires the identification information from the code, and then uses the identification information to communicate with the wireless device. Realize wireless communication.
As a result, it is possible to accurately specify a desired wireless device and read data from the specified wireless device.

In order to achieve the above object, a wireless communication system according to a second aspect of the present invention includes:
A wireless communication system including a wireless device attached to a management target and an acquisition device that acquires data from the wireless device,
The wireless device is
Storage means for storing data relating to the management object;
Identification information transmitting means for transmitting the identification information of the wireless device in response to irradiated visible light;
Identification information receiving means for receiving identification information of the wireless device sent from the acquisition device;
In response to the identification information received by the identification information receiving means, data reading means for reading the data stored in the storage means and transmitting to the acquisition device,
The acquisition device includes:
Identification information acquisition means for irradiating the wireless device with visible light and acquiring the identification information transmitted from the wireless device in response to the irradiation of the visible light;
Identification information transmission means for transmitting the identification information acquired by the identification information acquisition means to the wireless device;
Data receiving means for receiving the data transmitted from the wireless device in response to the identification information transmitted by the identification information transmitting means,
It is characterized by that.

According to this invention, the storage means of the wireless device stores data related to the management target. The identification information transmitting means transmits identification information (for example, tag ID) of the wireless device in response to the irradiated visible light. The identification information receiving means receives the identification information of the wireless device sent from the acquisition device. Then, the data transmission means reads the data stored in the storage means in response to the identification information received by the identification information receiving means and transmits it to the acquisition device.
On the other hand, the identification information acquisition unit of the acquisition device irradiates the wireless device with visible light, and acquires identification information transmitted from the wireless device in response to the irradiation of the visible light. The identification information transmission unit transmits the identification information acquired by the identification information acquisition unit to the wireless device. The data receiving unit receives data transmitted from the wireless device in response to the identification information transmitted by the identification information transmitting unit.
Thereby, by irradiating a desired wireless device with visible light, communication processing (communication transaction) between the wireless device and the acquisition device is started, and data stored in the wireless device can be acquired.
That is, the acquisition apparatus returns identification information from the wireless device irradiated with visible light, and realizes wireless communication with the wireless device using the identification information.
As a result, it is possible to accurately specify a desired wireless device and read data from the specified wireless device.

The wireless device is
As long as visible light is emitted from the acquisition device, the identification information receiving unit receives the identification information of the wireless device, and the data transmission unit transmits the data to the acquisition device. Good.

In order to achieve the above object, a data acquisition method according to the third aspect of the present invention includes:
A data acquisition method in a system including a wireless device attached to a management target and an acquisition device that acquires data from the wireless device,
In the wireless device, a code transmission step of transmitting a code assigned corresponding to the wireless device in response to irradiated visible light;
In the wireless device, an identification information receiving step of receiving identification information of the wireless device sent from the acquisition device;
In the wireless device, in response to the identification information received in the identification information reception step, a data transmission step of reading data stored in a predetermined storage unit and transmitting the data to the acquisition device;
In the acquisition device, a code acquisition step of irradiating the wireless device with visible light and acquiring the code transmitted from the wireless device in response to the irradiation of the visible light; and
In the acquisition device, the identification information associated with the code acquired by the code acquisition step is searched from a predetermined storage unit that stores the code and the identification information of the wireless device in association with each other. A search step;
In the acquisition device, an identification information transmission step of transmitting the identification information searched in the search step to the wireless device;
In the acquisition device, in response to the identification information transmitted by the identification information transmission step, a data reception step of receiving the data transmitted from the wireless device;
It is characterized by providing.

  According to this invention, in the wireless device, the code transmission step transmits the code assigned corresponding to the wireless device in response to the irradiated visible light. The identification information receiving step receives identification information (for example, tag ID) of the wireless device sent from the acquisition device. In the data transmission step, in response to the identification information received in the identification information reception step, the data stored in the predetermined storage unit is read and transmitted to the acquisition device. In the code acquisition step, the acquisition device irradiates the wireless device with visible light, and acquires a code transmitted from the wireless device in response to the irradiation of the visible light. The search step searches for the identification information associated with the code acquired by the code acquisition step from a predetermined storage unit that stores the code and the identification information of the wireless device in association with each other. In the identification information transmission step, the identification information retrieved in the retrieval step is transmitted to the wireless device. The data receiving step receives data transmitted from the wireless device in response to the identification information transmitted by the identification information transmitting step.

Thereby, by irradiating a desired wireless device with visible light, communication processing between the wireless device and the acquisition device is started, and data stored in the wireless device can be acquired.
In other words, the acquisition device returns a code assigned corresponding to the wireless device from the wireless device irradiated with visible light, acquires the identification information from the code, and then uses the identification information to communicate with the wireless device. Realize wireless communication.
As a result, it is possible to accurately specify a desired wireless device and read data from the specified wireless device.

In order to achieve the above object, a data acquisition method according to the fourth aspect of the present invention includes:
A data acquisition method in a system including a wireless device attached to a management target and an acquisition device that acquires data from the wireless device,
In the wireless device, the identification information transmission step of transmitting the identification information of the wireless device in response to the irradiated visible light,
In the wireless device, an identification information receiving step for receiving the identification information of the wireless device sent from the acquisition device;
In the wireless device, in response to the identification information received in the identification information reception step, a data transmission step of reading data stored in a predetermined storage unit and transmitting the data to the acquisition device;
In the acquisition device, an identification information acquisition step of irradiating the wireless device with visible light and acquiring the identification information transmitted from the wireless device in response to the irradiation of the visible light;
In the acquisition device, an identification information transmission step of transmitting the identification information acquired in the identification information acquisition step to the wireless device;
In the acquisition device, in response to the identification information transmitted by the identification information transmission step, a data reception step of receiving the data transmitted from the wireless device;
It is characterized by providing.

  According to this invention, in the wireless device, the identification information transmission step transmits the identification information (for example, tag ID) of the wireless device in response to the visible light irradiated. The identification information receiving step receives identification information of the wireless device sent from the acquisition device. In the data transmission step, in response to the identification information received in the identification information reception step, the data stored in the predetermined storage unit is read and transmitted to the acquisition device. In the identification information acquisition step, the acquisition device irradiates the wireless device with visible light, and acquires identification information transmitted from the wireless device in response to the visible light irradiation. In the identification information transmission step, the identification information acquired in the identification information acquisition step is transmitted to the wireless device. The data receiving step receives data transmitted from the wireless device in response to the identification information transmitted by the identification information transmitting step.

Thereby, by irradiating a desired wireless device with visible light, communication processing between the wireless device and the acquisition device is started, and data stored in the wireless device can be acquired.
That is, the acquisition device returns identification information from the wireless device irradiated with visible light, acquires the identification information, and then uses the identification information to realize wireless communication with the wireless device.
As a result, it is possible to accurately specify a desired wireless device and read data from the specified wireless device.

  According to the present invention, it is possible to accurately specify a desired wireless device and read data from the specified wireless device.

  A radio communication system according to an embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 is a schematic diagram showing an example of a configuration of a wireless communication system applied to the embodiment of the present invention. This wireless communication system is applied, for example, when a wireless tag is attached to a product displayed in a display case of a store and wireless communication is performed with a desired wireless tag from outside the display case through the glass.

  As shown in the figure, this wireless communication system includes a wireless tag 10 as a wireless device and a data acquisition device 20 as an acquisition device. Note that the visible light communication device OC and the wireless communication unit TU are connected to the data acquisition device 20.

First, the wireless tag 10 will be described. For example, the wireless tag 10 is affixed to the exterior of the product GS and is disposed in a predetermined display case together with the product GS.
Specifically, the wireless tag 10 includes a visible light communication unit 11, a control unit 12, a storage unit 13, a communication antenna 14, and a communication unit 15.

The visible light communication unit 11 includes, for example, a light emitting element that emits visible light (visible light signal) toward the outside and a light receiving element that receives visible light emitted from the outside. Visible light communication is performed with the communication device OC.
Specifically, when the visible light communication unit 11 receives visible light of a predetermined format (predetermined sequence), it transmits a code value (for example, a product identification number) corresponding to the product GS. That is, the visible light communication unit 11 as the code transmitting means transmits a code in response to the supplied visible light.
As an example of visible light, light emitted from a white LED (Light Emitting Diode) or light emitted from a visible light semiconductor laser light source may be used.

The control unit 12 includes a CPU (Central Processing Unit) and the like, and controls the entire wireless tag 10.
For example, when the visible light communication unit 11 receives visible light in a predetermined format, the control unit 12 controls the visible light communication unit 11 to transmit a code value corresponding to the product GS to the visible light communication device OC. Let
When the communication unit 15 receives the identification information (tag ID described later) at the communication unit 15, the control unit 12 reads data stored in the storage unit 13 and transmits the data from the communication unit 15 toward the data acquisition device 20. .

  The storage unit 13 as a storage unit includes a nonvolatile memory or the like, and stores, for example, data related to the product GS (for example, product name, arrival date, price, etc.). The storage unit 13 stores in advance unique identification information (tag ID) for identifying the wireless tag 10.

The communication antenna 14 transmits / receives a predetermined radio signal to / from the data acquisition device 20 (wireless communication unit TU).
The communication unit 15 constitutes identification information reception means and data transmission means, is controlled by the control unit 12, receives a tag ID and the like sent from the data acquisition device 20, and acquires data read from the storage unit 13 Transmit to the device 20.

Next, the data acquisition device 20 will be described. For example, the data acquisition device 20 is arranged in the vicinity of a display case in which the product GS is displayed, and by using the visible light communication device OC, reads the code value by designating the wireless tag 10 from outside the display case through the glass, and performs wireless communication. Data is acquired (read) from the wireless tag 10 through the unit TU.
Specifically, as illustrated in FIG. 2, the data acquisition device 20 includes a code acquisition unit 21, a tag information storage unit 22, a data storage unit 23, a processing control unit 24, and an interface 25. .

  The code acquisition unit 21 constitutes a code acquisition unit. When the visible light communication device OC is directed to a desired wireless tag 10 (product GS) by a user, the visible light communication unit 11 is irradiated with visible light having a predetermined format. The code value (for example, product identification number) transmitted from the visible light communication unit 11 in response to the visible light irradiation is acquired via the visible light communication device OC.

The tag information storage unit 22 constitutes device information storage means, and stores the above-described tag ID and code value in association with each other.
The data acquisition device 20 links the code value and the tag ID before storing the product GS in the display case, and stores the corresponding information in the tag information storage unit 22.

  The data storage unit 23 stores data (for example, product name, arrival date, price, etc.) related to each product GS acquired from each wireless tag 10 by the data acquisition device 20.

The processing control unit 24 includes a CPU and the like, and controls the entire data acquisition device 20.
For example, the process control unit 24 constitutes a search unit, and when the code acquisition unit 21 acquires a code value, searches for a corresponding tag ID from the tag information storage unit 22. The process control unit 24 calls the target wireless tag 10 by controlling the wireless communication unit TU from the interface 25 using the searched tag ID. That is, the tag ID is transmitted from the wireless communication unit TU as the identification information transmitting means. Then, in response to the call by the tag ID, data sent from the target wireless tag 10 is received. That is, data related to the product GS is received via the wireless communication unit TU as data receiving means.
The process control unit 24 stores the received data in the data storage unit 23.

  The interface 25 relays communication with the wireless communication unit TU. The wireless communication unit TU transmits / receives a predetermined wireless signal to / from the wireless tag 10 (communication antenna 14).

Hereinafter, the operation of the radio communication system having the above-described configuration will be described with reference to FIG.
FIG. 3 is a flowchart for explaining a data reading process in which the data acquisition device 20 reads data from a desired wireless tag 10.
Each wireless tag 10 stores data related to each product GS, and each product GS is displayed in a display case.

First, in the data acquisition device 20, the visible light communication device OC is operated by the user, and the visible light of a predetermined format is irradiated from the outside of the display case through the glass toward the wireless tag 10 (product GS) (step S11). ). That is, the user designates a desired wireless tag 10 and irradiates visible light from the visible light communication device OC.
At this time, since the visible light is emitted from the visible light communication device OC, the user can easily recognize the state in which the desired wireless tag 10 is exposed to the visible light.

  And the data acquisition apparatus 20 acquires the code value transmitted from the wireless tag 10 irradiated with visible light (step S12). That is, visible light communication is performed between the visible light communication device OC and the visible light communication unit 11, and a code value corresponding to the product GS is acquired.

  The data acquisition device 20 searches for the tag ID (step S13). That is, the tag information storage unit 22 is searched for the tag ID associated with the acquired code value.

  The data acquisition device 20 calls the target wireless tag 10 using the searched tag ID (step S14). That is, a tag ID is transmitted from the wireless communication unit TU, and a call is made to the wireless tag 10 with the corresponding tag ID.

  The data acquisition device 20 waits for data reception (step S15). That is, in response to the transmission of the tag ID, the execution of the subsequent process is waited until data related to the product GS is sent from the corresponding wireless tag 10.

  And when data is received, the data acquisition apparatus 20 preserve | saves the received data (step S16). For example, the received data is stored in the data storage unit 23 in association with the code value.

Thus, by applying visible light to the desired wireless tag 10 (visible light communication unit 11), communication processing (communication transaction) between the wireless tag 10 and the data acquisition device 20 is started, and the wireless tag 10 (memory) The data stored in the unit 13) can be acquired.
That is, the data acquisition device 20 returns a code value from the wireless tag 10 irradiated with visible light, acquires a tag ID from the code value, and then implements wireless communication with the wireless tag 10 using the tag ID. To do. Once the tag ID is acquired, the data acquisition device 20 can read the data without applying visible light to the wireless tag 10.

  Since the visible light is irradiated, the user can easily recognize whether the target wireless tag 10 is exposed to the visible light. Moreover, even if the wireless tags 10 are arranged close to each other, the target wireless tag 10 can be easily specified by visible light. Furthermore, data can be acquired from the target wireless tag 10 within a range where visible light can reach, that is, within a distance that can be aimed by the user.

(Other embodiments)
In the above embodiment, a case has been described in which a code value is acquired from the wireless tag 10 by visible light communication, and data is acquired from the wireless tag 10 by wireless communication using a tag ID linked to the code value. . That is, even when the tag ID is unknown, the data acquisition device 20 obtains the tag ID of the wireless tag 10 and performs wireless communication with the wireless tag 10.
However, the tag ID may be concealed (not used) and communication between the wireless tag 10 and the data acquisition device 20 may be performed. For example, when data is read from a specific product GS in the display case (a product that can be identified by just looking), the data is directly read from the wireless tag 10 by visible light communication. That is, when visible light is irradiated to a specific wireless tag 10 (visible light communication unit 11), the wireless tag 10 directs data read from the storage unit 13 from the visible light communication unit 11 to the data acquisition device 20. Send. In this case, communication between the wireless tag 10 and the data acquisition device 20 can be performed without involving the tag ID.

In the above embodiment, the tag ID and the code value are stored in the tag information storage unit 22 of the data acquisition device 20 in association with each other, and the data acquired from the wireless tag 10 in the data storage unit 23 (for example, a product (Name, date of arrival, price, etc.) has been described, but the data acquisition device 20 may be connected to a center (server, etc.) so that important data is not stored in the data acquisition device 20.
For example, when the data acquisition device 20 irradiates the wireless tag 10 with visible light from the visible light communication device OC and acquires a code value from the wireless tag 10 in response to the irradiation of visible light, the data acquisition device 20 transmits the code value to the center. And the corresponding tag ID is received. Next, when the target wireless tag 10 is called using this tag ID and data sent from the corresponding wireless tag 10 is received, the tag ID and the received data are transmitted to the server.
In this case, the data acquisition device 20 does not need to store information such as a tag ID, and does not store received data. For this reason, the data acquisition device 20 can be kept in a small configuration, and tag IDs can be prevented from being stolen from the data acquisition device 20.

In the above embodiment, a code value is acquired from the wireless tag 10 by visible light communication, and data is acquired from the wireless tag 10 by wireless communication using the tag ID linked to the code value. The tag ID may be acquired from the wireless tag 10 by visible light communication, and the data may be acquired from the wireless tag 10 by wireless communication using the acquired tag ID.
That is, when the visible light is emitted from the visible light communication device OC to the wireless tag 10 (visible light communication unit 11), the tag ID is transmitted from the wireless tag 10 to the data acquisition device 20, and the data acquisition device 20 And the data acquisition device 20 may acquire data from the wireless tag 10 by wireless communication between the wireless tag 10 and the data acquisition device 20 using the tag ID. In this case, there is no need to link the code value and the tag ID, the tag information storage unit 22 can be omitted, and the data acquisition device 20 can be simplified. In this case, the data storage unit 23 stores data of each product GS corresponding to the tag ID.

In the above embodiment, the case where communication processing is started by irradiating the wireless tag 10 (visible light communication unit 11) with visible light has been described. However, visible light is applied to the wireless tag 10 (visible light communication unit 11). If the irradiation is not continued, the communication process may not be continued.
That is, as long as the visible light is irradiated on the wireless tag 10 (visible light communication unit 11), the wireless tag 10 is irradiated with visible light even after the visible light communication unit 11 transmits the code value or the tag ID. To detect that it is still being done. The control unit 12 waits for reception of the tag ID sent from the data acquisition device 20 while the wireless tag 10 (visible light communication unit 11) is irradiated with visible light, and receives the tag ID. The data read from the storage unit 13 is transmitted to the data acquisition device 20.
In this case, even when the user mistakenly irradiates the visible light emitted from the visible light communication device OC and irradiates the unintended wireless tag 10 only for a moment, the data of the wireless tag 10 can be prevented from being acquired.
Further, the visible light communication device OC intermittently irradiates the visible light communication unit 11 with data such as a password by intermittently irradiating the visible light communication unit 11 and the wireless tag 10 responds to this data with the code value as unique information. If the tag ID is transmitted to the data acquisition device 20, visible light emitted from the visible light communication device OC can be distinguished from sunlight or interference light, and malfunction of the wireless tag 10 can be prevented. If the information transmitted from the wireless tag 10 to the data acquisition device 20 is switched according to the type of data to be placed on the visible light, not only the code value and the tag ID but also various information can be wirelessly transmitted as necessary. It can be transmitted from the tag 10 to the data acquisition device 20, and the communication functions can be diversified.

In the above embodiment, the case of reading data from the wireless tag 10 (product GS) in the display case has been described. However, the wireless tag 10 for reading data is not limited to such a display case, and can be applied in various ways. .
That is, the present invention is not limited to the case where the management target object to which the wireless tag 10 is attached is placed in a space isolated from the outside (for example, a clean room or a radioactivity management room). Even when the wireless tag 10 is attached to the installed sensor or the like, or the meter device of the apartment house arranged in a row at the height of the wall, etc., by irradiating the wireless tag 10 with visible light, Data can be read out.

  As described above, it is possible to accurately designate a desired wireless device and read data from the designated wireless device.

It is a schematic diagram which shows an example of a structure of the radio | wireless communications system which concerns on embodiment of this invention. It is a schematic diagram which shows an example of a structure of a data acquisition apparatus. It is a flowchart for demonstrating the data reading process which concerns on embodiment of this invention.

Explanation of symbols

10 wireless tag 20 data acquisition device

Claims (5)

A wireless communication system including a wireless device attached to a management target and an acquisition device that acquires data from the wireless device,
The wireless device is
Storage means for storing data relating to the management object;
Code transmitting means for transmitting a code assigned corresponding to the wireless device in response to irradiated visible light;
Identification information receiving means for receiving identification information of the wireless device sent from the acquisition device;
In response to the identification information received by the identification information receiving means, data reading means for reading the data stored in the storage means and transmitting to the acquisition device,
The acquisition device includes:
Device information storage means for storing the code and the identification information of the wireless device in association with each other;
Irradiating visible light to the wireless device, code acquisition means for acquiring the code transmitted from the wireless device in response to irradiation of the visible light;
Search means for searching the identification information associated with the code acquired by the code acquisition means from the device information storage means;
Identification information transmitting means for transmitting the identification information searched by the search means to the wireless device;
Data receiving means for receiving the data transmitted from the wireless device in response to the identification information transmitted by the identification information transmitting means,
A wireless communication system. A wireless communication system including a wireless device attached to a management target and an acquisition device that acquires data from the wireless device,
The wireless device is
Storage means for storing data relating to the management object;
Identification information transmitting means for transmitting the identification information of the wireless device in response to irradiated visible light;
Identification information receiving means for receiving identification information of the wireless device sent from the acquisition device;
In response to the identification information received by the identification information receiving means, data reading means for reading the data stored in the storage means and transmitting to the acquisition device,
The acquisition device includes:
Identification information acquisition means for irradiating the wireless device with visible light and acquiring the identification information transmitted from the wireless device in response to the irradiation of the visible light;
Identification information transmission means for transmitting the identification information acquired by the identification information acquisition means to the wireless device;
Data receiving means for receiving the data transmitted from the wireless device in response to the identification information transmitted by the identification information transmitting means,
A wireless communication system. The wireless device is
As long as visible light is emitted from the acquisition device, the identification information receiving unit receives the identification information of the wireless device, and the data transmission unit transmits the data to the acquisition device.
The wireless communication system according to claim 1 or 2. A data acquisition method in a system including a wireless device attached to a management target and an acquisition device that acquires data from the wireless device,
In the wireless device, a code transmission step of transmitting a code assigned corresponding to the wireless device in response to irradiated visible light;
In the wireless device, an identification information receiving step of receiving identification information of the wireless device sent from the acquisition device;
In the wireless device, in response to the identification information received in the identification information reception step, a data transmission step of reading data stored in a predetermined storage unit and transmitting the data to the acquisition device;
In the acquisition device, a code acquisition step of irradiating the wireless device with visible light and acquiring the code transmitted from the wireless device in response to the irradiation of the visible light; and
In the acquisition device, the identification information associated with the code acquired by the code acquisition step is searched from a predetermined storage unit that stores the code and the identification information of the wireless device in association with each other. A search step;
In the acquisition device, an identification information transmission step of transmitting the identification information searched in the search step to the wireless device;
In the acquisition device, in response to the identification information transmitted by the identification information transmission step, a data reception step of receiving the data transmitted from the wireless device;
A data acquisition method comprising: A data acquisition method in a system including a wireless device attached to a management target and an acquisition device that acquires data from the wireless device,
In the wireless device, the identification information transmission step of transmitting the identification information of the wireless device in response to the irradiated visible light,
In the wireless device, an identification information receiving step for receiving the identification information of the wireless device sent from the acquisition device;
In the wireless device, in response to the identification information received in the identification information reception step, a data transmission step of reading data stored in a predetermined storage unit and transmitting the data to the acquisition device;
In the acquisition device, an identification information acquisition step of irradiating the wireless device with visible light and acquiring the identification information transmitted from the wireless device in response to the irradiation of the visible light;
In the acquisition device, an identification information transmission step of transmitting the identification information acquired in the identification information acquisition step to the wireless device;
In the acquisition device, in response to the identification information transmitted by the identification information transmission step, a data reception step of receiving the data transmitted from the wireless device;
A data acquisition method comprising:

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