JP7404126B2 - contactless communication medium - Google Patents

Description

TECHNICAL FIELD The present invention relates to a contactless communication medium that is attached to an object to be detected and that transmits a message to that effect in a non-contact manner when moisture is generated in the object to be detected.

Traditionally, in buildings such as condominiums and other housing complexes and general buildings, piping used for air conditioning, etc. has been installed in the ceiling or between walls, and these piping are used to supply fluids such as water. Emissions are taking place. Since such piping is arranged in the ceiling or between walls as described above, it is connected using joining members such as joints depending on the structure of the building. However, although the joints are sealed with silicone or the like, if the sealing is incomplete, there is a risk of water leakage.

Here, Patent Document 1 describes that when moisture is generated, a pair of conductive patterns are short-circuited by the moisture, and whether the pair of conductive patterns is in an insulated state or a conductive state is read out via an antenna. A moisture detection sensor for detecting the generation of moisture is disclosed. By using this technology, it becomes possible to detect water leaks as described above.

JP 2019-124657 Publication

In a non-contact communication medium such as the above-mentioned moisture detection sensor, when attached to a detected object made of metal, the antenna is affected by the metal, resulting in a short communication distance. Therefore, in order to avoid the influence of metal, it is possible to reduce the influence of metal on non-contact communication by placing a magnetic material, metal sheet, etc. between the non-contact communication medium and the detected object to which it is attached. .

However, when placing a magnetic material or metal sheet between the non-contact communication medium and the object to be detected to which it is attached, separate members such as the magnetic material or metal sheet are required, and their alignment is required. This poses problems in that the work becomes complicated and the structure becomes complicated and expensive. Further, Patent Document 1 describes that the base material itself on which the antenna and conductive pattern are formed is made of metal, and that the antenna and the conductive pattern are formed on the surface of the base material with an insulating film interposed therebetween. In that case, a delicate technique is required to laminate insulating films so that the antenna or conductive pattern and the base material do not short-circuit, resulting in a problem that the manufacturing process becomes complicated.

The present invention has been made in view of the problems of the conventional techniques as described above, and is attached to an object to be detected and transmits a message to that effect in a non-contact manner when moisture is generated in the object to be detected. An object of the present invention is to provide a non-contact communication medium that can alleviate the influence of metal on non-contact communication even when a detected object is metal with a simple structure.

In order to achieve the above object, the present invention has the following features:
a base material in which a first region and a second region are connected via a folding portion;
a communication antenna formed in the first region of one surface of the base material;
two detection wirings formed on one surface of the base material in the first region and the second region so as to straddle the folded portion;
arranged in the first region on one surface of the base material, connected to the communication antenna and connected to one end of each of the two detection wirings, and a detection means for detecting a conduction state between the detection wiring and transmitting the detection result in a non-contact manner via the communication antenna,
The base material is folded through the folding portion,
The detection wiring includes a conductive pattern having a shape that covers the communication antenna in a plan view.

In the present invention configured as described above, since the conductive pattern of the detection wiring covers the communication antenna in plan view, the second region of the base material is on the side of the detected object. If attached to the body, a conductive pattern covering the communication antenna will be interposed between the detected object and the communication antenna in plan view, reducing the influence of the detected object made of metal on non-contact communication. be done. At this time, a conductive pattern is formed as a part of the detection wiring to reduce the influence of the detected object made of metal on non-contact communication, and the detection wiring and the communication antenna are connected to the base base. Since they are formed on the same surface of the material, the manufacturing process becomes easy. In addition, even in such a configuration, the detection wiring is placed in the second region on the side of the detected object between the first region and the second region, which are in a stacked state when the base material is folded. Due to this formation, when moisture is generated in the object to be detected, the two detection wirings are easily connected to each other, and it becomes easier to detect the occurrence of moisture such as water leakage in the object to be detected.

Furthermore, if the first region and the second region are attached to each other directly or indirectly, the communication antenna can be reliably fixed by the conductive pattern in plan view when it is attached to the detected object. It will be covered.

In addition, the communication antenna, the detection wiring, and the detection means are provided on the inner surface of the base material when the base material is folded through the folding part, and the two detection If a portion of each wiring is exposed from the base material, direct application of external force to the communication antenna, detection wiring, and detection means can be avoided. Even though the means is protected, if moisture is generated in the object to be detected, the two detection wirings will be electrically connected at the portion exposed from the base material.

In addition, in the case where the communication antenna, the detection wiring, and the detection means are provided on the outer surface of the base material when the base material is folded through the folding part, a protective layer laminated to cover at least the communication antenna and the detection means on the first region of the base material; an insulating layer laminated to cover at least the detection wiring on the second region of the base material; If a part of each of the two detection wirings is exposed from the insulating layer, direct application of external force to the communication antenna and detection means can be avoided, and the communication antenna and detection Although the means is protected and the two detection wirings are prevented from shorting through the object to be detected, if moisture is generated in the object to be detected, the two detection wirings are , conduction occurs at the portion exposed from the insulating layer.

According to the present invention, since the detection wiring includes a conductive pattern having a shape that covers the communication antenna in plan view, it can be attached to the object to be detected so that the second region of the base material faces the object to be detected. For example, a conductive pattern that covers the communication antenna in a plan view is interposed between the detected object and the communication antenna, and as a result, the conduction state of the two detection wirings formed on the base material is reduced. In a non-contact communication medium that non-contactly transmits the fact that moisture has occurred on the detected object by detecting the be able to. In this case, a conductive pattern is formed as a part of the detection wiring to reduce the influence of the detected object made of metal on non-contact communication, and the detection wiring and the communication antenna are connected to the base base. Since they are formed on the same surface of the material, when attached to metal, the influence of metal on non-contact communication can be alleviated with a simple structure, and the manufacturing process can be simplified. In addition, even in such a configuration, the detection wiring is placed in the second region on the side of the detected object between the first region and the second region, which are in a stacked state when the base material is folded. Due to this formation, when moisture is generated in the object to be detected, the two detection wirings are easily connected to each other, and it is possible to easily detect the occurrence of moisture such as water leakage in the object to be detected.

In addition, in the case where the first region and the second region are attached to each other directly or indirectly, the communication antenna is attached to the object to be detected by the conductive pattern when viewed from above. It can be ensured that it is covered.

In addition, the communication antenna, the detection wiring, and the detection means are provided on the inner surface of the base material when the base material is folded through the folding part, and the two detection If a portion of each wiring is exposed from the base material, direct application of external force to the communication antenna, detection wiring, and detection means can be avoided. And, while protecting the detection means, when moisture is generated in the object to be detected, the two detection wirings can be connected to each other at the portion exposed from the base material.

In addition, when the communication antenna, the detection wiring, and the detection means are provided on the outer surface of the base material when the base material is folded through the folding part, A protective layer is laminated to cover at least the communication antenna and the detection means on the first region of the base material, and an insulating layer is laminated to cover at least the detection wiring on the second region of the base substrate. In the case where a portion of each of the two detection wirings is exposed from the insulating layer, direct application of external force to the communication antenna and the detection means can be avoided. While protecting the detection means and avoiding short-circuiting of the two detection wirings via the object to be detected, if moisture is generated in the object to be detected, the two detection wirings can be removed. can be made electrically conductive at the portion exposed from the insulating layer.

1A and 1B are diagrams showing one embodiment of a non-contact communication medium of the present invention, in which (a) is a diagram showing a laminated structure, and (b) is a diagram showing a configuration on a first region of a base material shown in (a). The figure shown in (c) is a diagram showing the configuration on the second region of the base material shown in (a). It is a figure which shows the state which opened the base material of the moisture detection label shown in FIG. 1, (a) is a top view, (b) is a side view. FIG. 2 is a diagram showing an example of how the moisture detection label shown in FIG. 1 is used. 3 is a diagram for explaining the effect when water leaks from the piping when the moisture detection label shown in FIG. 1 is attached to the piping as shown in FIG. A diagram showing a state when no leakage occurs, and (b) a diagram showing a state when water leakage occurs in the piping. FIG. 2 is a diagram showing an example of a system for detecting water leakage from piping to which the moisture detection label shown in FIG. 1 is attached. 6 is a flowchart for explaining a method for detecting water leakage in piping when the moisture detection label shown in FIG. 1 is attached to the piping as shown in FIG. 3 in the system shown in FIG. 5. FIG. 2 is a diagram showing the relative position of the antenna and solid pattern of the moisture detection label shown in FIG. 1. FIG. FIG. 6 is a diagram showing another embodiment of the contactless communication medium of the present invention. It is a figure showing other embodiments of the non-contact communication medium of the present invention.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of a non-contact communication medium of the present invention, in which (a) is a diagram showing a laminated structure, and (b) is a diagram showing a region 10a of a base material 10 shown in (a). (c) is a diagram showing the configuration on the region 10b of the base material 10 shown in (a). FIG. 2 is a diagram showing the base material 10 of the moisture detection label 1 shown in FIG. 1 in an open state, with (a) being a plan view and (b) being a side view.

As shown in FIG. 1, in the non-contact communication medium of this embodiment, a base substrate 10 is folded, tack paper 40 is laminated and attached to one side thereof, and an adhesive 20b is applied to the other side. This is a moisture detection label 1 configured as follows.

The base material 10 is made of a non-conductive material such as a film sheet, and as shown in FIG. There is. On one surface of the base material 10, a communication antenna 12 and two detection wirings 13a and 13b are formed, and an IC chip 11 serving as a detection means is mounted. The base substrate 10 has a communication antenna 12 and detection wirings 13a and 13b formed thereon, and is folded through a folding portion 15 so that the surface on which the IC chip 11 is mounted is on the inside, and forms a region 10a. The regions 10b are opposed to each other with a core base material 30 made of a film sheet or the like interposed therebetween, and are indirectly adhered by an adhesive 20a.

The antenna 12 is formed in a region 10a of the base material 10 so that two isosceles triangular conductors are lined up with a gap in between.

One end of the two detection wirings 13a and 13b is connected to the IC chip 11 on the region 10a of the base substrate 10, and extends in parallel from there to the region 10b across the folded portion 15. 10b terminates at the end opposite to the folded portion 15. Each of the detection wirings 13a and 13b includes a conductive pattern in a region 10b of solid patterns 14a and 14b having a shape that covers the antenna 12 when viewed from above in a state in which the base material 10 is folded through the folding portion 15. It is equipped as

The IC chip 11 is provided with two antenna terminals (not shown) and two detection terminals (not shown), and the surface on which these antenna terminals and detection terminals are provided serves as a mounting surface. It is mounted in the area 10a of the base material 10. The antenna terminals of the IC chip 11 are each connected to the antenna 12, and the detection terminals of the IC chip 11 are connected to one end of each of the detection wirings 13a and 13b. The IC chip 11 detects the resistance value between the detection wirings 13a and 13b by passing a current generated by electric power obtained through non-contact communication via the antenna 12 through the detection wirings 13a and 13b, and detects the resistance value between the detection wirings 13a and 13b based on the resistance value. The conduction state between the detection wirings 13a and 13b is detected, and the detection result is converted into digital information and transmitted via the antenna 12 in a non-contact manner.

The tack paper 40 is laminated and adhered to the area 10a of the base material 10.

The adhesive 20b is made of a non-conductive material and is applied to the region 10b.

The moisture detection label 1 of this embodiment is configured as described above, so that the ends of the detection wirings 13a and 13b opposite to the ends connected to the IC chip 11 are connected to the edge of the base material 10. It is expressed in As a result, a portion of the detection wirings 13a and 13b are exposed from the base material 10 and the adhesive 20b.

Below, a method of using the moisture detection label 1 configured as described above and its effects will be explained.

FIG. 3 is a diagram showing an example of how the moisture detection label 1 shown in FIG. 1 is used.

The moisture detection label 1 shown in FIG. 1 is attached to a pipe 2, for example, as shown in FIG. 3, and is used to detect water leakage from the pipe 2. The piping 2 is constructed by connecting pipe parts 2a and 2b made of metal with a joint 3. The pipe portions 2a and 2b are arranged in a straight line in the vertical direction, and one end portions are connected to each other by a joint 3. In the piping 2 configured in this manner, there is a possibility that water leakage may occur at the joint portion 4 between the pipe portions 2a, 2b and the joint 3. Therefore, in order to detect water leakage occurring at the joint 4, as shown in FIG. 3, the moisture detection label 1 shown in FIG. It is attached to the side surface of the pipe section 2b that is located downward in the vertical direction using an adhesive 20b. At this time, the moisture detection label 1 detects the occurrence of moisture by detecting the conduction state between the two detection wirings 13a and 13b, as will be described later. It is attached to the side surface of the pipe portion 2b so that the end side where the portion 13b is exposed faces upward in the vertical direction.

FIG. 4 is a diagram for explaining the effect when water leaks from the piping 2 while the moisture detection label 1 shown in FIG. 1 is attached to the piping 2 as shown in FIG. (a) is a diagram showing a state when no water leakage occurs in the piping 2, and (b) is a diagram showing a state when water leakage occurs in the piping 2.

If the moisture detection label 1 shown in FIG. 1 is attached to the piping 2 as shown in FIG. 3 and there is no water leakage in the piping 2, as shown in FIG. The book detection wirings 13a and 13b are not electrically connected and are in a non-conductive state.

On the other hand, when the moisture detection label 1 shown in FIG. 1 is attached to the pipe 2 as shown in FIG. Moisture caused by water leakage travels along the surface of the pipe portion 2b and adheres to the moisture detection label 1. As described above, the moisture detection label 1 is attached to the side surface of the pipe portion 2b such that the end side of the base substrate 10 where the detection wirings 13a and 13b are exposed is upward in the vertical direction. As shown in FIG. 4(b), the moisture 13c that has passed along the surface of the pipe portion 2b adheres to the edges of the base substrate 10 where the detection wirings 13a and 13b are exposed. Then, a short circuit 13d occurs between the ends of the two detection wirings 13a, 13b exposed at the edge of the base material 10, and thereby the two detection wirings 13a, 13b become electrically conductive. . By detecting the conduction state between the detection wirings 13a and 13b, it is detected that water leakage has occurred in the pipe 2.

In this way, when there is no water leakage in the pipe 2 to which the moisture detection label 1 is attached, there is no conduction between the detection wirings 13a and 13b, while the moisture detection label 1 is attached. If there is a water leak in the attached piping 2, the detection wiring 13a, 13b becomes conductive, so by detecting the continuity of the detection wiring 13a, 13b, the moisture detection label 1 can be pasted. It is possible to detect that water is leaking from the attached pipe 2.

At that time, the detection wirings 13a and 13b are formed in the region 10b on the piping 2 side of the two regions 10a and 10b that are in a stacked state when the base material 10 is folded, so that the When a water leak occurs in the pipe 2, moisture due to the water leak easily adheres to the ends of the detection wirings 13a and 13b, making it easier to detect that a water leak has occurred in the pipe 2.

Moreover, the base material 10 is folded via the folding part 15 so that the surface on which the antenna 12 and the detection wirings 13a and 13b are formed and on which the IC chip 11 is mounted is on the inside. Direct application of external force to the antenna 12, the detection wirings 13a, 13b, and the IC chip 11 is avoided, and the antenna 12, the detection wirings 13a, 13b, and the IC chip 11 can be protected.

Below, a specific method of detecting the occurrence of water leakage in the pipe 2 to which the moisture detection label 1 is attached will be explained using the above-mentioned effect.

FIG. 5 is a diagram showing an example of a system for detecting water leakage from the pipe 2 to which the moisture detection label 1 shown in FIG. 1 is attached.

As a system for detecting water leakage in the piping 2 shown in FIG. 3 using the moisture detection label 1 shown in FIG. 1, as shown in FIG. 5, non-contact communication is possible for the moisture detection label 1. A system can be considered that includes a reader/writer 5 serving as a reading means, and a management personal computer 6 serving as a processing means connected to the reader/writer 5 via wire or wirelessly. It is also conceivable to use a handy terminal with built-in processing means as well as reading means as the reader/writer, in which case a management personal computer would be unnecessary.

FIG. 6 is for explaining a method for detecting water leakage in the piping 2 when the moisture detection label 1 shown in FIG. 1 is attached to the piping 2 as shown in FIG. 3 in the system shown in FIG. 5. This is a flowchart.

In the moisture detection label 1 shown in FIG. 1, when the reader/writer 5 is brought close to the moisture detection label 1 and the moisture detection label 1 is detected by the reader/writer 5 (step 1), first, Power is supplied to the moisture detection label 1, and a command to detect the conduction state between the detection wirings 13a and 13b and to transmit the detection results is transmitted to the moisture detection label 1 (step 2). .

When the power supplied from the reader/writer 5 is obtained by the moisture detection label 1 and the command transmitted from the reader/writer 5 is received by the IC chip 11 via the antenna 12 of the moisture detection label 1 (step 3 ), a current is supplied between the detection wirings 13a and 13b by the power supplied from the reader/writer 5.

In the IC chip 11, the resistance value between the detection wirings 13a and 13b is detected using the supplied current, thereby detecting the conduction state between the detection wirings 13a and 13b (step 4). ). Here, if the moisture detection label 1 is attached to the piping 2 as shown in FIG. 3 and there is no water leakage in the piping 2, there is no continuity between the detection wirings 13a and 13b. . In this state, even if a current is supplied between the detection wiring 13a and 13b by the power supplied from the reader/writer 5, the detection wiring 13a and the detection wiring 13a are in a non-conducting state. , 13b, so that the resistance value detected in the IC chip 11 becomes almost infinite.

In the IC chip 11, when the detected resistance value is almost infinite, it is determined that there is no conduction between the detection wirings 13a and 13b, and the result of the determination is that the detection wirings 13a and 13b are in a non-conductive state. As a result of the detection of the conduction state, the digital information is converted into digital information and transmitted contactlessly to the reader/writer 5 via the antenna 12 (step 5). Note that the resistance value detected by the IC chip 11 when the detection wiring 13a and 13b are in a conductive state is the resistance value detected by the IC chip 11 when the detection wiring 13a and the detection wiring 13b are at the end of the base material 10. Since the resistance value is connected at the end exposed on the side, the resistance value for determining that there is no conduction between the detection wirings 13a and 13b in the IC chip 11 is not nearly infinite. Alternatively, a resistance value greater than a certain threshold value, which is greater than the resistance value at which the detection wiring 13a and the detection wiring 13b are connected at the exposed end of the base substrate 10, may be used.

On the other hand, if the moisture detection label 1 is attached to the piping 2 as shown in FIG. Since a short circuit occurs between the ends of the two detection wirings 13a and 13b, the detection wirings 13a and 13b are in a conductive state. The resistance value connected to the wiring 13b at the exposed end of the base substrate 10 is detected.

In the IC chip 11, when the detected resistance value is the resistance value where the detection wiring 13a and the detection wiring 13b are connected at the end exposed on the edge of the base material 10, It is determined that there is continuity between the detection wirings 13a and 13, and the judgment result is converted into digital information as a detection result of the continuity between the detection wirings 13a and 13, and is sent to the reader/writer 5 via the antenna 12. Contact will be sent. Note that when the detection wirings 13a and 13 are in a non-conducting state, the resistance value detected by the IC chip 11 becomes almost infinite as described above. As a resistance value for determining that the wirings 13a and 13 are in a conductive state, a resistor connected at the end of the detection wiring 13a and the detection wiring 13b exposed on the edge of the base substrate 10 is used. Instead of a value, a value below a certain threshold may be used.

In this manner, in the reader/writer 5, the conduction state between the detection wirings 13a and 13b detected on the moisture detection label 1 is transmitted via the antenna 12 in a non-contact manner.

When the detection result transmitted contactlessly from the moisture detection label 1 to the reader/writer 5 as described above is received by the reader/writer 5 (step 6), the detection result received by the reader/writer 5 is transmitted to the management PC. 6 (step 7).

When the detection result transferred from the reader/writer 5 is received by the management computer 6 (step 8), the moisture detection label 1 is sent to the reader/writer 5 in a non-contact manner in the management computer 6. Based on the detection results transferred to , it is determined whether water leakage has occurred in the pipe 2 (step 9). Specifically, in the detection results transferred from the reader/writer 5 to the management computer 6, if there is no continuity between the detection wiring 13a and 13b, it is determined that there is no water leakage in the piping 2. If the detection wirings 13a and 13b are electrically connected, it is determined that water leakage has occurred in the pipe 2.

Here, the effect of providing the solid patterns 14a and 14b will be explained.

FIG. 7 is a diagram showing the relative positions of the antenna 12 of the moisture detection label 1 shown in FIG. 1 and the solid patterns 14a, 14b.

As shown in FIG. 7, in the moisture detection label 1 shown in FIG. It has a shape that covers the antenna 12.

Therefore, if the base material 10 is attached to the detected object so that the area 10b on which the solid patterns 14a and 14b are formed is on the detected object side, the antenna will be placed between the detected object and the antenna 12 in a plan view. Since the solid patterns 14a and 14b covering 12 are interposed, it is possible to alleviate the influence of metal on non-contact communication when attached to metal. At this time, solid patterns 14a and 14b are formed as part of the detection wiring 13a and 13b to alleviate the influence of the detected object made of metal on non-contact communication, and the detection wiring 13a, By forming the antenna 13b and the antenna 12 on the same surface of the base material 10, when attached to metal, the influence of metal on non-contact communication can be alleviated with a simple structure, and the manufacturing process can be reduced. can be made easier. Note that the distance between the antenna 12 and the solid patterns 14a, 14b is preferably 0.5 mm to 10 mm.

Further, although the base substrate 10 is folded through the folding portion 15, the two regions 10a and 10b through the folding portion 15 are indirectly attached to each other with the adhesive 20a through the core substrate 30. By doing so, the antenna 12 can be reliably covered by the solid patterns 14a and 14b in plan view when it is attached to the object to be detected.

In this embodiment, the ends of the detection wirings 13a and 13b opposite to the ends connected to the IC chip 11 are exposed at the edge of the base material 10, so that the detection wirings 13a and 13b are Parts of the wires 13a and 13b are exposed from the base material 10 and the adhesive 20b, but the holes are small enough to prevent the two detection wirings 13a and 13b from shorting with the detected object. 20b may be opened to expose a portion of the detection wirings 13a, 13b from the base material 10 and the adhesive 20b.

(Other embodiments)
8 and 9 are diagrams showing other embodiments of the contactless communication medium of the present invention, and show a laminated structure.

A moisture detection label 101 shown in FIG. 8 can also be considered as the non-contact communication medium of the present invention.

As shown in FIG. 8, the moisture detection label 101 in this embodiment is different from the moisture detection label 1 shown in FIG. The base material 110 is folded through the folding part 115 so that the surface on which the base material 110 is mounted faces outward, and the two regions 110a and 110b of the base material 110 are directly attached with an adhesive 120a. They are different in one respect. In this embodiment, the tack paper 140 serves as a protective layer in the present invention, and the IC chip 111 and the antenna 112 are covered with the tack paper 140, and the adhesive 120b serves as an insulating layer in the present invention, and the detection wiring 113a , 113b and the object to be detected are avoided.

Also in the moisture detection label 101 configured as described above, since the detection wirings 113a and 113b are provided with the solid patterns 114a and 114b shaped to cover the antenna 112 in plan view, the solid patterns 114a and 114b of the base substrate 110, If the adhesive 120b is attached to the object to be detected so that the area 110b in which the area 114b is formed faces the object to be detected, a solid pattern covering the antenna 112 in plan view will be formed between the object to be detected and the antenna 112. 114a and 114b are interposed, and when the object to be detected is made of metal, the influence of metal on non-contact communication can be alleviated. At this time, solid patterns 114a and 114b are formed as part of the detection wiring 113a and 113b to alleviate the influence of the detected object made of metal on non-contact communication, and the detection wiring 113a, 113b and the antenna 112 are formed on the same surface of the base substrate 110, so when attached to metal, the influence of metal on non-contact communication can be alleviated with a simple structure, and the manufacturing process can be reduced. can be made easier. Also in such a configuration, the detection wirings 113a and 113b are formed in the region 110b that is on the side of the detected object among the two regions 110a and 110b that are stacked when the base material 110 is folded. By doing so, when moisture is generated in the object to be detected, the generated moisture easily adheres to the ends of the detection wirings 113a and 113b, making it easier to detect the state of the object to be detected.

Further, although the IC chip 111 and the antenna 112 are provided on the outer surface of the base material 110 when it is folded through the folding portion 115, they are covered with the tack paper 140, so the IC chip Direct application of external force to IC chip 111 and antenna 112 is avoided, and IC chip 111 and antenna 112 can be protected. That is, the tack paper 140 only needs to cover at least the IC chip 111 and the antenna 112 in the area 110a of the base material 110.

A moisture detection label 201 shown in FIG. 9 can also be considered as the non-contact communication medium of the present invention.

As shown in FIG. 9, the moisture detection label 201 in this embodiment is different from the moisture detection label 101 shown in FIG. The difference is that it is coated with Note that in this embodiment, the adhesive 220b serves as a protective layer and an insulating layer in the present invention, and the IC chip 111 and antenna 112 are covered with the adhesive 220b, and the detection wirings 213a and 213b and the detected object are Short circuits are avoided.

Also in the moisture detection label 201 configured as described above, since the detection wirings 213a and 213b have the solid patterns 214a and 214b shaped to cover the antenna 212 in plan view, the solid patterns 214a and 214b of the base material 210, If the adhesive 220b is attached to the object to be detected so that the area 210b where 214b is formed faces the object to be detected, a solid pattern covering the antenna 212 in plan view will be created between the object to be detected and the antenna 212. 214a and 214b are interposed, and when the object to be detected is made of metal, the influence of metal on non-contact communication can be alleviated. At this time, solid patterns 214a and 214b are formed as part of the detection wiring 213 to alleviate the influence of the detected object made of metal on non-contact communication, and the detection wiring 213 and the antenna 212 and are formed on the same surface of the base material 210, the influence of metal on non-contact communication when attached to metal can be alleviated with a simple structure, and the manufacturing process can be simplified. It can be done. Also in such a configuration, the detection wirings 213a and 213b are formed in the region 210b that is on the side of the detected object among the two regions 210a and 210b that are stacked when the base material 210 is folded. By doing so, when moisture is generated in the object to be detected, the generated moisture easily adheres to the ends of the detection wirings 213a and 213b, making it easier to detect the state of the object to be detected.

In addition, in what is shown in FIGS. 8 and 9, each of the two detection wirings 113a, 113b, 213a, 213b has an end opposite to the end connected to the IC chips 111, 211. Since the adhesives 120b, 220b are exposed at the edges of the base materials 110, 210, moisture generated on the object to be detected adheres to the exposed edges, and the two detection wirings 113a, 113b, 213a, 213b becomes conductive, but the two detection wirings 113a, 113b, 213a, 213b are not short-circuited with the object to be detected by making a small hole in the adhesive 120b, 220b, or by making a hole in the base substrate. Adhesive 120b, 220b is applied in a line shape to a part of the surface where the detection wiring 113a, 113b, 213a, 213b is formed among the regions 110b, 210b of 110, 210, or the folded portions 115, 215 of the regions 110b, 210b are By not coating the opposite end side, a part of the detection wiring 113a, 113b, 213a, 213b is exposed, and when moisture is generated on the object to be detected, the generated moisture can be removed from this surface. By attaching it to the exposed portion, the two detection wirings 113a, 113b, 213a, and 213b may be brought into a conductive state. Part of the detection wiring 113a, 113b, 213a, 213b is exposed by not applying the coating to the edge side opposite to the folded portion 115, 215 of the region 110b, 210b of the base material 110, 210. With this configuration, when moisture is generated in the object to be detected, the generation of moisture can be detected at an early stage.

In addition, in order to avoid a short circuit between the detection wiring 113a, 113b, 213a, 213b and the object to be detected, the adhesive 120b, 220b should be applied to at least the area 110b, 210b of the base material 110, 210. It is sufficient if the detection wirings 113a, 113b, 213a, and 213b are covered.

1,101,201 Moisture detection label 2 Piping 2a, 2b Pipe section 3 Joint 4 Joint section 10,110,210 Base material 10a, 10b, 110a, 110b, 210a, 210b Area 11,111,211 IC chip 12,112 , 212 Antenna 13a, 13b, 113a, 213a Detection wiring 14a, 14b, 114a, 214a Solid pattern 15, 115, 215 Folded portion 20a, 20b, 120a, 120b, 220a, 220b Adhesive 30 Core base material 40, 140 Tack paper

Claims (4)

a base material in which a first region and a second region are connected via a folding portion;
a communication antenna formed in the first region of one surface of the base material;
two detection wirings formed on one surface of the base material in the first region and the second region so as to straddle the folded portion;
arranged in the first region on one surface of the base substrate, connected to the communication antenna and connected to one end of each of the two detection wirings, and a detection means for detecting a conduction state between the detection wiring and transmitting the detection result in a non-contact manner via the communication antenna,
The base material is folded through the folding portion,
The detection wiring is a non-contact communication medium including a conductive pattern having a shape that covers the communication antenna in a plan view. The contactless communication medium according to claim 1,
The first area and the second area are attached to each other directly or indirectly, the non-contact communication medium. The contactless communication medium according to claim 1 or 2,
The communication antenna, the detection wiring, and the detection means are provided on the inner surface of the base material when the base material is folded through the folding part,
Each of the two detection wirings is a non-contact communication medium in which a portion thereof is exposed from the base material. The contactless communication medium according to claim 1 or 2,
The communication antenna, the detection wiring, and the detection means are provided on a surface of the base material that is the outer side when the base material is folded through the folding part,
a protective layer laminated on the first region of the base material, covering at least the communication antenna and the detection means;
an insulating layer laminated on the second region of the base material, covering at least the detection wiring;
Each of the two detection wirings is a non-contact communication medium in which a portion thereof is exposed from the insulating layer.

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