JP7059020B2 - Articles with IC tags, desorption monitoring devices, desorption monitoring methods and IC tags - Google Patents

Description

The present invention relates to an IC-tagged article in which a first component and a second component to which an IC tag is attached can be detached from each other, a detachment monitoring technique for monitoring attachment / detachment of a component in an IC-tagged article, and an IC suitable for them. It's about tags.

In an article in which two parts are detachably provided, for example, a bottle, a cap is attached to the bottle body to manage the contents stored in the bottle body. In this way, the bottle is distributed as a product with the contents protected by attaching the cap, and is delivered to the consumer. In recent years, there have been an increasing number of cases in which IC tags are attached to products in order to efficiently carry out warehousing / delivery, inventory, sales management, and the like.

Here, the commercial value is not in the bottle, but in the contents (for example, high-grade liquor, pharmaceutical products, etc.). For this reason, in the process of distributing bottles, the cap was opened, the contents were refilled with a counterfeit product, and then the cap was reattached and sold. As a countermeasure against such counterfeiting, it has been proposed to disconnect the electrical connection of the IC chip constituting the IC tag by opening the cap (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-227752

In the above-mentioned conventional technique, it is necessary to provide the cap with a configuration for destroying the communication function of the IC tag itself by the opening operation, and there is a problem that the cap structure becomes complicated. Further, if the communication function is incompletely destroyed due to the opening operation, the opening cannot be detected, and there is a problem in the stability of the operation. It should be noted that such a problem is not limited to the bottle, and the IC tag monitors that the other part is attached to or detached from one part of the two parts constituting the article, and the article is managed. It's happening in the whole technology.

The present invention has been made in view of the above problems, and a technique capable of stably monitoring the attachment / detachment of one component to the attachment / detachment of one component in the article by using an IC tag attached to the article with a simple configuration. The purpose is to provide.

The first aspect of the present invention is an article with an IC tag to which the first component and the second component to which the IC tag is attached can be attached to and detached from each other, and the first component is when the second component is attached. The IC tag has a contact member that comes into contact with the second component, and the IC tag has an article-side storage unit that stores identification information for identifying the article, and electricity of the contact member when the second component is attached to the first component. It is characterized by including a detection unit that detects the resistance value as attachment / detachment information regarding attachment / detachment between the first component and the second component, and a transmission unit that transmits identification information and attachment / detachment information detected by the detection unit.

A second aspect of the present invention is a detachment monitoring device for monitoring attachment / detachment of a first component and a second component in the IC-tagged article, and is an identification information and attachment / detachment information transmitted from a transmission unit of the IC tag. The receiving unit that receives the message, the monitoring side storage unit that stores the received identification information and the detachable information in association with each other each time the receiving unit receives the identification information and the detachable information, and the receiving unit that stores the identification information and the detachable information. Each time a message is received, the latest desorption information among the desorption information stored in association with the monitoring side storage unit for the same identification information as the received identification information is checked for the sameness as the desorption information received by the reception unit. When the identity determination unit for determination and the identity determination unit confirm the identity of the attachment / detachment information, the first component and the second component are not attached / detached, and when they are not confirmed, the first component and the second component are used. It is characterized by including a desorption determination unit for determining that desorption has been performed.

A third aspect of the present invention is a desorption monitoring method for monitoring the desorption of a second part with respect to a first part in the IC-tagged article by using a desorption monitoring device, and is an identification information and identification information from a transmission unit of the IC tag. Each time the attachment / detachment information is transmitted, the following steps (a) to (d), (a) the transmission identification information and the attachment / detachment information are associated with each other and stored in the monitoring side storage unit of the attachment / detachment monitoring device. And (b) a step of extracting the latest desorption information from the desorption information stored in association with the monitoring side storage unit for the same identification information as the received identification information by the control unit of the desorption monitoring device, and (c). The step of determining the identity between the extracted desorption information and the received desorption information by the control unit , and (d) when the identity of the desorption information is confirmed, the first component and the second component are not detached. When the identity is not confirmed, the control unit determines that the first component and the second component have been detached from each other.

Further, a fourth aspect of the present invention is an IC tag attached to a second part of a first part and a second part that are detachable from each other and constitutes an article, and stores identification information for identifying the article. It includes a side storage unit, a detection unit that detects attachment / detachment information regarding attachment / detachment of the first component and the second component, and a transmission unit that transmits identification information and attachment / detachment information detected by the detection unit. It is characterized by measuring the electrical resistance value of the contact member that comes into contact with the second component when the second component is mounted on the first component of one component, and detecting the attachment / detachment information based on the electrical resistance value . There is.

In the invention configured as described above, the IC tag detects the attachment / detachment information regarding the attachment / detachment of the first component and the second component, and transmits the information together with the identification information for identifying the article. Therefore, by referring to the identification information and the attachment / detachment information, the attachment / detachment determination of the other part (second part (or first part)) with respect to one part (first part (or second part)) in the article is surely made. It can be carried out.

As described above, by using the IC tag having a function of obtaining the attachment / detachment information in association with the identification information, the attachment / detachment of the other part to the one part in the article can be stably monitored with a simple configuration.

It is a perspective view which shows the appearance of the bottle which is one Embodiment of the article with an IC tag which concerns on this invention. It is a figure which shows typically the attachment / detachment of the cap in the bottle shown in FIG. It is a figure which shows typically the attached state of the IC tag to a cap. It is a figure which shows the cap opening monitoring apparatus which is one Embodiment of the attachment / detachment monitoring apparatus which concerns on this invention. It is a figure which shows typically the opening monitoring operation by the opening monitoring device shown in FIG. 4.

FIG. 1 is a perspective view showing the appearance of a bottle which is an embodiment of an article with an IC tag according to the present invention. Further, FIG. 2 is a diagram schematically showing the attachment / detachment of the cap in the bottle shown in FIG. Further, FIG. 3 is a diagram schematically showing a state in which the IC tag is attached to the cap. Further, FIG. 4 is a diagram showing a cap opening monitoring device, which is an embodiment of the attachment / detachment monitoring device according to the present invention. The bottle 1 is composed of a bottle body 2 and a bottle cap 3.

The bottle body 2 is, for example, a resin container called a PET bottle containing polyethylene terephthalate (PET) as a main material. The body 21 of the bottle body 2 is finished in a square tubular shape, a cylindrical shape, a hexagonal tubular shape, or the like, and can store beverages such as water, tea, and juice inside the body portion 21. A lid closing portion 22 is formed on the top of the body portion 21. Here, the range in which the bottle cap 3 is generally mounted above the shoulder portion of the body portion 21 is defined as the lid closing portion 22. At the upper end of the lid closing portion 22, the spout 23 is opened, and a male screw 24 is appropriately formed from the vicinity of the spout 23 downward. The male screw 24 has a shape such as a continuous spiral male screw and an appropriate partial cut.

Further, in the male screw 24, the conductive contact member 25 is male by a predetermined length along the spiral direction of the male screw 24 so as to be in electrical contact with the contact 33 provided on the bottle cap 3 by attaching the bottle cap 3. It is attached to the thread of the screw 24. Here, as shown in FIG. 2, the attachment range of the contact member 25 is a part of the thread of the male screw 24, but it goes without saying that the contact member 25 may be provided on the entire thread. As a method for making the contact member 25, for example, a vapor deposition method, a plating method, a printing method, or the like can be used, but it is particularly preferable to use a printing method. The reason will be described in detail later. Further, a part or all of the threads may be made of a conductive material, which may function as the contact member 25.

A resin material different from the resin material constituting the bottle body 2 is usually applied to the bottle cap 3, but the bottle cap 3 is not limited to this, and may be formed of the same resin material. In this bottle cap 3, as shown in FIG. 2, a female screw 32 is formed inside the cap body 31 and a male screw 24 provided on the bottle body 2 by rotating the bottle cap 3 in a predetermined direction. It is possible to attach the bottle cap 3 by screwing with. On the contrary, it can be removed from the bottle body 2 by rotating the bottle cap 3 to the opposite side.

Here, as shown in FIGS. 1 to 3, the characteristic point in this embodiment is that the IC tag 4 is attached to the bottle cap 3 and the IC tag 3 is attached to the bottle body 2 when the bottle cap 3 is attached to the bottle cap 3. A contact 33, 34 and a wiring 35, 36 are provided on the bottle cap 3 in order to electrically connect the tag 4 and the contact member 25. The mounting mode of the IC tag 4 is arbitrary, and an in-mold, an adhesive, or the like can be used. The contacts 33 and 34 may be provided in any of them as long as they can be electrically contacted with the contact member 25, but it is desirable that the contacts 33 and 34 are arranged so as to be hidden by the bottle cap 3 attached to the bottle body 2. In the present embodiment, for example, as shown in FIGS. 2 and 3, the female screw 32 is provided so as to be separated from each other in the spiral direction at the cutting position of the thread, and the male screw 24 is provided when the bottle cap 3 is attached to the bottle body 2. It is provided so as to face the screw thread of. In this respect, the wirings 35 and 36 are the same as the contacts 33 and 34.

Further, the separation distance between the contacts 33 and 34 in the spiral direction is shorter than the length of the contact member 25, and the contacts 33 and 34 are the contact members 25 when the contact member 25 is attached and when the bottle cap 3 is removed from the bottle body 2. Sliding on the surface of. Therefore, each time the bottle cap 3 is attached or detached, wear occurs between the contacts 33 and 34 and the contact member 25, and the electric resistance changes. In particular, in the present embodiment, since the hardness of the contacts 33 and 34 is set to be higher than the hardness of the contact member 25, the contacts 33 and 34 scrape the surface of the contact member 25 when the bottle cap 3 is attached and detached. It moves and the electrical resistance fluctuates greatly. Therefore, when the bottle cap 3 is attached and detached, the electric resistance becomes a unique value for each attachment and detachment. That is, when the bottle cap 3 is removed and then reattached, the electric resistance values before and after the bottle cap 3 are always different values, and the electric resistance value of the contact member 25 can function as attachment / detachment information regarding attachment / detachment between the bottle body 2 and the bottle cap 3. .. Therefore, in the present embodiment, as shown in FIG. 3, the contacts 33 and 34 are electrically connected to the IC chip 41 of the IC tag 4 via the wirings 35 and 36, respectively, and the contact member 25 is electrically connected by the IC tag 4. The resistance value can be appropriately detected as attachment / detachment information.

As shown in FIG. 4, the IC tag 4 has an IC chip 41 and an antenna 42. Of these, the IC chip 41 has a communication feeding unit 411, a control unit 412, and a storage unit 413. The communication power feeding unit 411 receives the radio wave transmitted from the attachment / detachment monitoring device 5 via the antenna 42 and supplies power to each part of the IC chip 41 by electromagnetic induction, and converts the command transmitted by the radio wave into digital data. Then, it is given to the control unit 412, and as will be described in detail later, it also has a communication function of transmitting radio waves including identification information and attachment / detachment information via the antenna 42. A part of the current supplied from the communication feeding unit 411 is given to the contact 33 via the wiring 35.

The control unit 412 has a detection unit 412a and an information update unit 412b. The detection unit 412a is electrically connected to the contact 34 via the wiring 36, and can detect the electric resistance value of the contact member 25. Then, the electric resistance value detected by the detection unit 412a is appropriately registered in the storage unit 413, and the rewriting of the electric resistance value is executed. This rewriting update is performed by the information updating unit 412b, and the latest electric resistance value is always stored in the IC tag 4.

In addition to the above-mentioned electrical resistance value (detachment information), the storage unit 413 stores identification information for identifying the bottle 1. In this way, the latest electric resistance value corresponds to the identification information and is stored in the storage unit 413. These are given to the communication feeding unit 411 from the control unit 412 as data regarding the attachment / detachment of the bottle cap 3 in the bottle 1. Then, the communication feeding unit 411 transmits the radio wave including these data to the attachment / detachment monitoring device 5 via the antenna 42.

As shown in FIG. 4, the desorption monitoring device 5 includes a reader / writer 51, a controller 52, and a display / operation unit 53. The reader / writer 51 wirelessly communicates with the IC tag 4, receives radio waves including check command data from the controller 52, converts them into digital data and transmits them to the IC tag 4, and also from the IC tag 4 the electrical resistance value and identification. It receives radio waves containing information, converts them into digital data, and gives them to the controller 52.

The controller 52 includes a CPU (= Central Processing Unit) and a RAM (= Random).
It has a control unit 521 configured by a computer having an Access Memory) and the like, and a storage unit 522 for storing programs and various data. The control unit 521 executes the opening monitoring operation based on the program stored in the storage unit 522. That is, the control unit 521 stores the electric resistance value and the identification information received via the reader / writer 51 in the storage unit 522 as container information in association with each other. As a result, the latest container information regarding the bottle 1 is stored in the storage unit 522. Further, the control unit 521 determines the identity of the bottle 1 based on the container information. That is, each time the control unit 521 receives the container information, the control unit 521 reads out the latest value among the electric resistance values stored in association with the storage unit 522 for the same identification information as the received identification information. If this is the same as the newly received electric resistance value, or if the fluctuation amount is within the permissible range, the identity of the electric resistance value is guaranteed and the bottle cap 3 is not opened. The control unit 521 determines. On the contrary, when the fluctuation amount exceeds the permissible range and the identity is not guaranteed, the control unit 521 determines that the bottle cap 3 has been removed once. In this way, the control unit 521 functions as the "identity determination unit" and the "detachment determination unit" of the present invention. Then, these determination results and various data are displayed on the display / operation unit 53 for easy user confirmation, and the user can give a check command via the display / operation unit 53.

As the desorption monitoring device 5, for example, one in which a reader / writer 51 is connected to a personal computer or one in which a reader / writer 51 is connected to a server via a network can be used. Further, a device in which a dedicated application is installed on a mobile terminal having a communication function such as a smartphone may be used as the desorption monitoring device 5. In either case, desorption monitoring can be performed as follows.

FIG. 5 is a diagram schematically showing a detachment monitoring operation in a bottle with an IC tag. Here, when the bottle 1 is filled with the contents, that is, the bottle cap 3 has never been removed from the bottle body 2 after bottling, that is, in the so-called unopened state (column (a) in the figure), the bottle cap 3 is used. Will be described separately from the case where the bottle is removed from the bottle body 2 and then reattached in the opened state (column (b) in the figure).

In the present embodiment, immediately after the first bottling, the user operates the desorption monitoring device 5 to measure the electric resistance value in the unopened state. More specifically, the user brings the reader / writer 51 closer to the bottle cap 3 and the first check command via the display / operation unit 53 (hereinafter, this is referred to as an "initial setting command", and a check command executed thereafter). To distinguish). Then, a radio wave including the initial setting command data is transmitted from the desorption monitoring device 5 to the IC tag 4, and in response to this, the electric resistance value immediately after bottling is measured, and the IC tag 4 is stored in association with the identification information of the bottle 1. It is stored in the unit 41 (see the top of the column (a) in the figure). Further, a radio wave including the identification information and the measured electric resistance value is transmitted from the IC tag 4 to the desorption monitoring device 5, and is registered as container information in the storage unit 522 of the desorption monitoring device 5 (step (a) of the present invention. ) Corresponds to an example). In FIG. 5, "ID01" and "XXΩ" are registered as the identification information of the bottle 1 and the electric resistance value immediately after bottling, respectively.

Then, when confirming the opening status of the bottle 1 after the first bottling, the user brings the reader / writer 51 closer to the bottle cap 3 and gives a check command via the display / operation unit 53. As a result, the current electrical resistance value is measured by the IC tag 4 as shown at the bottom of the column (a) in the figure in the same manner as when the initial setting command is given, and the IC tag 4 is stored. It is registered in the section 41 and updated. Further, a radio wave including the identification information and the measured electric resistance value is transmitted from the IC tag 4 to the attachment / detachment monitoring device 5. Upon receiving this, the desorption monitoring device 5 reads out the latest value among the electric resistance values stored in association with the storage unit 522 for the same identification information as the identification information received by the control unit 521 (the process of the present invention (the process of the present invention). Corresponds to an example of b)).

When the bottle 1 is unopened (column (a) in the figure), it is determined that the latest read value and the received electrical resistance value are the same, or the fluctuation amount is within the allowable range (this). The control unit 521 determines that the bottle cap 3 has not been opened (corresponding to an example of the step (d) of the present invention). Then, the display / operation unit 53 displays to that effect and informs the user.

On the other hand, as shown in the middle part of column (b) of the same figure, the bottle cap 3 may be reattached after the bottle 1 is opened after the first bottling. In this case, when the bottle cap 3 is attached or detached. The contacts 33 and 34 slide on the surface of the contact member 25, and the electric resistance value changes. Therefore, even if the user measures the electrical resistance in the same manner as during the first bottling, the electrical resistance value measured by the IC tag 4 is different from the value immediately after the first bottling (“◎◎ Ω” in the figure). "). Then, the electric resistance value is transmitted from the IC tag 4 to the attachment / detachment monitoring device 5 together with the identification information. Upon receiving this, the desorption monitoring device 5 reads out the latest value among the electric resistance values stored in association with the storage unit 522 for the same identification information as the identification information received by the control unit 521 (the process of the present invention (the process of the present invention). Corresponds to an example of b)). Then, since the received electric resistance value fluctuates beyond the above allowable range, the control unit 521 determines that the bottle cap 3 has been opened (corresponding to an example of the steps (b) and (c) of the present invention. )), The display / operation unit 53 displays to that effect and informs the user.

As described above, according to the present embodiment, the IC tag 4 measures the electric resistance value as the attachment / detachment information regarding the attachment / detachment of the bottle cap 3 to the bottle body 2, and transmits the identification information for identifying the bottle 1 to the attachment / detachment monitoring device 5. do. Therefore, by referring to the identification information and the electric resistance value, it is possible to reliably determine whether or not the bottle cap 3 is attached to or detached from the bottle body 2 in the bottle 1. By additionally equipping the IC tag 4 with a function for measuring the electric resistance value in this way, it is possible to stably monitor the attachment / detachment of the bottle cap 3 to the bottle body 2 with a simple configuration.

Further, in the above embodiment, since the contact member 25 is added to the bottle 1 and the electric resistance value is measured, it is practically impossible to manufacture a counterfeit bottle. This is because even if the contact member 25 is built into a counterfeit bottle, it is very difficult and practically impossible to match the electric resistance value with the electric resistance value immediately after bottling. In particular, when the contact member 25, contacts 33, 34, wiring 35, 36, etc. are manufactured by a printing method, the printing width and thickness are likely to vary, which is rather advantageous for individual identification and makes forgery more difficult. It is supposed to be.

Further, it is an essential requirement that the contacts 33 and 34 and the contact member 25 are both made of a conductive material, but other than that, it is optional. However, in the above embodiment, the hardness of the contacts 33 and 34 is different from the hardness of the contact member 25. Therefore, the electric resistance value can be greatly changed by sliding the bottle cap 3 when it is attached or detached. Desorption monitoring can be performed with higher accuracy by such hardness adjustment. For example, in the printing method using conductive ink, the hardness can be adjusted with a high degree of freedom by adjusting the binder component contained in the conductive ink. Therefore, it can be said that the printing method is one of the most suitable manufacturing techniques. In the above embodiment, the hardness of the contacts 33 and 34 is set to be higher than the hardness of the contact member 25, but the hardness relationship may be reversed, and the same effect as described above can be obtained.

As described above, in the present embodiment, the bottle 1, the bottle body 2, and the bottle cap 3 correspond to an example of the "article with IC tag", "first part", and "second part" of the present invention, respectively. The storage units 41 and 522 correspond to examples of the "article-side storage unit" and the "monitoring-side storage unit" of the present invention, respectively. The electrical resistance of the contact member 25 corresponds to an example of the "physical property value indicating the electromagnetic property of the contact member" of the present invention. The communication feeding unit 411 and the reader / writer 51 function as the "transmitting unit" and the "receiving unit" of the present invention, respectively.

The present invention is not limited to the above-described embodiment, and various modifications can be made to the above-mentioned one without departing from the spirit of the present invention. For example, in the above embodiment, the IC tag 4 is attached to the bottle cap 3, but the IC tag 4 may be attached to the bottle body 2. In this case, the bottle body 2 and the bottle cap 3 correspond to an example of the "second part" and the "first part" of the present invention, respectively.

Further, in the above embodiment, the electric resistance value (desorption information) stored in the storage unit 413 is updated every time the electric resistance is detected by the detection unit 412a, but when used in combination with the desorption monitoring device 5. It is not always essential to store the electric resistance value on the IC tag 4 side. Further, each time the electric resistance detection is performed, the electric resistance value may be registered in the storage unit 413 of the IC tag 4 and the electric resistance value may be accumulated. In this case, the electric resistance value is read from the IC tag 4 and referred to. This makes it possible to verify the attachment / detachment history of the bottle cap 3.

Further, in the above embodiment, only the presence or absence of opening is monitored, but the application target of the present invention is not limited to this. For example, after the cap is opened, every time the electric resistance is detected based on the check command, the latest electric resistance value is updated and stored in association with the identification information, and the electric resistance is detected by the detection unit 412a. The attachment / detachment of the bottle cap 3 may be monitored by determining the identity between the electric resistance value and the latest electric resistance value each time.

Further, in the above embodiment, the present invention is applied to the bottle 1 molded of a resin material, but the application target of the present invention is not limited to this, and is composed of a glass material, a ceramic material, or the like. The present invention can also be applied to the bottle to be used. Further, the present invention is not limited to the bottle, and the present invention can be applied to an article in which the first component and the second component are detachably provided from each other.

INDUSTRIAL APPLICABILITY The present invention is suitable for all IC-tagged articles in which the first component and the second component to which the IC tag is attached can be attached to and detached from each other, general attachment / detachment monitoring techniques for monitoring attachment / detachment of parts in IC-tagged articles, and the like. It can be applied to all IC tags.

1 ... Bottle (article with IC tag)
2 ... Bottle body (first part)
3 ... Bottle cap (second part)
4 ... IC tag 5 ... Detachment monitoring device 25 ... Contact member 33, 34 ... Contact 35, 36 ... Wiring 41 ... IC chip 51 ... Reader / writer (receiver)
52 ... Controller 53 ... Display / Operation unit 411 ... Communication power supply unit (transmitter)
412a ... Detection unit 412b ... Information update unit 413 ... (Article side) Storage unit 521a ... Identity determination unit 521b ... Detachment determination unit 522 ... (Monitoring side) Storage unit

Claims (9)

The first part and the second part to which the IC tag is attached are detachable articles with an IC tag.
The first component has a contact member that comes into contact with the second component when the second component is mounted.
The IC tag is
An article-side storage unit that stores identification information for identifying the article,
A detection unit that detects the electric resistance value of the contact member when the second component is mounted on the first component as attachment / detachment information regarding attachment / detachment between the first component and the second component.
An IC-tagged article comprising the identification information and a transmission unit for transmitting the attachment / detachment information detected by the detection unit. The article with an IC tag according to claim 1.
The article-side storage unit is an IC-tagged article that stores attachment / detachment information detected by the detection unit. The article with an IC tag according to claim 2.
An IC-tagged article having an information updating unit that updates the attachment / detachment information stored in the article-side storage unit each time the attachment / detachment information is detected by the detection unit. The IC-tagged article according to any one of claims 1 to 3.
The second component has a contact that is in sliding contact with the contact member when the second component is mounted on the first component.
The detection unit is an article with an IC tag that measures the electric resistance value of the contact member by passing a current through the contact to the contact member. The article with an IC tag according to claim 4, wherein the article has an IC tag.
An article with an IC tag in which the hardness of the contact and the hardness of the contact member are different from each other. The article with an IC tag according to claim 5.
An article with an IC tag whose contact hardness is higher than that of the contact member. A desorption monitoring device for monitoring the desorption of the first component and the second component in the IC-tagged article according to any one of claims 1 to 6.
A receiving unit that receives identification information and desorption information transmitted from the transmitting unit of the IC tag, and a receiving unit.
Each time the receiving unit receives the identification information and the attachment / detachment information, the monitoring side storage unit that stores the received identification information and the attachment / detachment information in association with each other.
Each time the receiving unit receives the identification information and the attachment / detachment information, the latest attachment / detachment information among the attachment / detachment information stored in association with the monitoring side storage unit for the same identification information as the received identification information and the above-mentioned. An identity determination unit that determines the identity with the desorption information received by the receiving unit, and
When the identity determination unit confirms the identity of the attachment / detachment information, the first component and the second component are not attached / detached, and when it is not confirmed, the first component and the second component are attached / detached. A desorption monitoring device including a desorption determination unit for determining that the desorption has been performed. A desorption monitoring method for monitoring the desorption of the second component with respect to the first component in the IC-tagged article according to any one of claims 1 to 6 using a desorption monitoring device .
Each time the identification information and the desorption information are transmitted from the transmission unit of the IC tag, the following steps (a) to (d) are performed.
(A) A step of associating the transmitted identification information and the desorption information with each other and storing them in the monitoring side storage unit of the desorption monitoring device .
(B) A step of extracting the latest desorption information among the desorption information stored in association with the monitoring side storage unit for the same identification information as the received identification information by the control unit of the desorption monitoring device .
(C) A step of determining the identity between the extracted desorption information and the received desorption information by the control unit , and
(D) When the identity of the attachment / detachment information is confirmed, the first component and the second component are not attached / detached, and when the identity is not confirmed, the first component and the second component are attached / detached. A desorption monitoring method comprising executing a step of determining by the control unit . An IC tag attached to the second part of the first and second parts that are detachable from each other and constitutes the article.
An article-side storage unit that stores identification information for identifying the article,
A detection unit that detects attachment / detachment information regarding attachment / detachment of the first component and the second component,
It is provided with a transmission unit that transmits the identification information and the attachment / detachment information detected by the detection unit.
The detection unit measures the electric resistance value of the contact member that comes into contact with the second part when the second part is mounted on the first part of the first part, and uses the electric resistance value as the electric resistance value . An IC tag characterized by detecting the attachment / detachment information based on the above.

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