JP7581823B2 - Moisture Detection Tag - Google Patents

Description

The present invention relates to a moisture detection tag that is attached to a detection area and detects the occurrence of moisture in the detection area.

Traditionally, in buildings such as apartment complexes and general buildings, pipes used for air conditioning and the like have been installed above the ceiling or between the walls, and these pipes are used to supply and discharge fluids such as water. As such pipes are installed above the ceiling or between the walls as described above, they are connected using connecting members such as joints depending on the structure of the building. However, although the joints are sealed with silicone or the like at the joints, there is a risk of water leaking if the sealing is incomplete. There is also a risk of water leaking from the pipes connected to the sink under the sink in the kitchen or bathroom.

Patent Document 1 discloses a moisture detection sensor in which a pair of conductive patterns are formed on a base member so that they extend in one direction, and when moisture is generated, the moisture shorts the pair of conductive patterns, and the occurrence of moisture is detected by reading via an antenna whether the pair of conductive patterns are in an insulated or conductive state. Using this technology, it becomes possible to detect water leaks as described above.

JP 2019-124657 A

However, in the device disclosed in Patent Document 1, the occurrence of moisture is detected by a short circuit between a pair of conductive patterns caused by moisture. However, because the pair of conductive patterns are formed to extend in one direction on the base member, there is a problem in that there are directions in which it is difficult to detect the occurrence of moisture.

Specifically, in an area where a pair of conductive patterns are close to each other, the pair of conductive patterns will short-circuit when a small amount of moisture is generated, but in an area where the pair of conductive patterns are far from each other, the pair of conductive patterns will not short-circuit even if a small amount of moisture is generated. Furthermore, even if a pair of conductive patterns are close to each other, if the area is the center of the base member, the generation of moisture cannot be detected unless moisture generated in the periphery rises up to the center of the base member. Furthermore, even if a pair of conductive patterns are close to each other, if the area is along one edge of the base member, moisture generated near the edge along which the conductive patterns of the base member are located is easy to detect, but moisture generated near the edge along which the conductive patterns of the base member are not located is difficult to detect.

The present invention has been made in consideration of the problems with the conventional technology described above, and aims to provide a moisture detection tag that is attached to a detection area and detects the occurrence of moisture in the detection area, and that can easily detect moisture that occurs around the moisture detection tag.

In order to achieve the above object, the present invention provides
A moisture detection tag that is attached to a detection area and detects the occurrence of moisture in the detection area,
A base material;
An antenna and two detection wires provided on the base material;
a detection means that is connected to the antenna and the two detection wires and is provided on the base material, the detection means detecting a conduction state between the two detection wires and transmitting the detection result in a non-contact manner via the antenna,
The two detection wirings are provided parallel to each other along a peripheral portion of the base material ,
The base material is
an attachment portion that faces and comes into contact with the detection area when the moisture detection tag is attached to the detection area;
a protrusion that is foldably connected to the attachment portion via a folding portion and that protrudes from the attachment portion when the moisture detection tag is attached to the detection area,
The antenna and the detector are provided on the protrusion,
At least a portion of each of the two detection wires is provided on the attachment portion .

In the present invention configured as described above, when moisture occurs around the moisture detection tag, the two detection wires provided on the base substrate short-circuit, and the conductive state is transmitted non-contact from the detection means via an antenna, thereby detecting the occurrence of moisture. However, since the two detection wires are provided parallel to each other along the periphery of the base substrate, moisture occurring in any direction around the moisture detection tag can be easily detected.

In addition, the base substrate has an attachment portion that abuts against the detection area when the moisture detection tag is attached to the detection area, and a protrusion that is foldably connected to the attachment portion via a folding portion and protrudes from the attachment portion when the moisture detection tag is attached to the detection area, and the antenna and detection means are provided on the protrusion, and at least a portion of the two detection wires are provided on the attachment portion , making it easier to detect generated moisture while preventing moisture from adhering to the antenna and detection means.

In addition, when the protrusion is configured to be foldable in two and the attachment section is connected to each of the two folded areas of the protrusion via a fold, if an adhesive layer is laminated on the surfaces of at least the protrusion of the base substrate that face each other when the protrusion is folded in two, the opposing surfaces of the protrusion are bonded to each other by the adhesive layer, making it easier for the protrusion to maintain a protruding state from the attachment section.

In addition, if the antenna and detection means are configured to have a water-resistant protective layer laminated on the base substrate so as to cover the antenna and detection means, the antenna and detection means are further protected from moisture.

According to the present invention, in a moisture detection tag that is attached to a detection area and detects the occurrence of moisture in the detection area, two detection wires for detecting the occurrence of moisture are provided parallel to each other along the periphery of the base substrate, making it easy to detect moisture occurring in any direction around the moisture detection tag.

In addition, the base substrate has an attachment section that abuts against the detection area when the moisture detection tag is attached to the detection area, and a protrusion that is foldably connected to the attachment section via a folding section and protrudes from the attachment section when the moisture detection tag is attached to the detection area, and the antenna and detection means are provided on the protrusion, and two detection wires are at least partially provided on the attachment section, making it easier to detect generated moisture while preventing moisture from adhering to the antenna and detection means.

In addition, when the protrusion is configured to be foldable in two and the attachment portion is connected to each of the two folded areas of the protrusion via the fold, and at least the base substrate has an adhesive layer laminated on the surfaces of the protrusion that face each other when the protrusion is folded in two, the opposing surfaces of the protrusion can be bonded to each other with the adhesive layer, making it easier to maintain the protrusion protruding from the attachment portion.

In addition, in those devices that have a water-resistant protective layer laminated on the base substrate so as to cover the antenna and detection means, the antenna and detection means can be further protected from moisture.

1A and 1B are diagrams showing a first embodiment of the moisture detection tag of the present invention, in which (a) is a diagram viewed from the front, (b) is a cross-sectional view taken along the line A-A' shown in (a), and (c) is a diagram showing the configuration after removing the waterproof sheet shown in (a). 2 is a diagram showing an example of a usage form of the moisture detection tag shown in FIG. 1 . 1A and 1B are diagrams for explaining the effect of the moisture detection tag shown in FIG. 1 when the tag is attached to the floor surface as shown in FIG. 2 and water leaks from the pipes, where (a) shows the state when no water leaks from the pipes, and (b) shows the state when water leaks from the pipes. FIG. 2 is a diagram showing an example of a system for detecting water leakage from a pipe using the moisture detection tag shown in FIG. 1 . 5 is a flowchart for explaining a method for detecting water leakage from a pipe when the moisture detection tag shown in FIG. 1 is attached to a floor surface as shown in FIG. 2 in the system shown in FIG. 4 . 2 is a diagram for explaining the effect of providing two detection wires parallel to each other along the peripheral edge of the base material in the moisture detection tag shown in FIG. 1 . FIG. 1A and 1B are diagrams showing a second embodiment of the moisture detection tag of the present invention, in which (a) is a diagram viewed from the front, (b) is a cross-sectional view taken along the line A-A' shown in (a), and (c) is a diagram showing the configuration after removing the waterproof sheet shown in (a). 8 is a diagram showing an example of a usage form of the moisture detection tag shown in FIG. 7 . 9 is a diagram for explaining a unique effect when the moisture detection tag shown in FIG. 7 is used as shown in FIG. 8 . FIG. 11A and 11B are diagrams showing another embodiment of the moisture detection tag of the present invention.

Below, an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 shows a first embodiment of the moisture detection tag of the present invention, where (a) is a view from the front, (b) is a cross-sectional view taken along the line A-A' in (a), and (c) is a diagram showing the configuration after removing the waterproof sheet 20a shown in (a).

As shown in FIG. 1, the moisture detection tag in this embodiment is a moisture detection tag 1 that is constructed by laminating and attaching water-resistant waterproof sheets 20a, 20b to the front and back of a base substrate 10, and further attaching a release paper 40 removably onto the waterproof sheet 20b.

The base substrate 10 is made of a non-conductive material such as a film, and has a rectangular shape. On one side of the base substrate 10, a communication antenna 12 and two detection wires 13a and 13b are formed, and an IC chip 11 that serves as a detection means is mounted.

The antenna 12 is formed on one side of the base substrate 10 with two isosceles triangular conductors arranged with a gap between them.

The two detection wires 13a, 13b have one end connected to the IC chip 11, extend from there in parallel to each other toward the edge of the base substrate 10, are formed in parallel along the four edges that form the periphery of the base substrate 10, and terminate at the other end not connected to each other.

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 becomes the mounting surface, and is mounted on the surface of the base substrate 10 on which the antenna 12 and detection wirings 13a and 13b are formed, and is fixed with anisotropic conductive paste (not shown). 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, and the antenna terminals are conductive to the antenna 12, and the detection terminals are conductive to the detection wirings 13a and 13b, respectively, by the anisotropic conductive paste. The IC chip 11 detects the resistance between the detection wires 13a and 13b by passing a current generated by the power obtained through non-contact communication via the antenna 12 through the detection wires 13a and 13b, detects the state of conduction between the detection wires 13a and 13b based on the resistance value, converts the detection result into digital information, and transmits it non-contact via the antenna 12.

The waterproof sheets 20a and 20b serve as protective layers in this invention.

The waterproof sheet 20a is laminated so as to cover the IC chip 11 and the antenna 12 on the surface of the base substrate 10 on which the antenna 12 and the detection wiring 13a, 13b are provided, and is attached by an adhesive layer 30a. The waterproof sheet 20a can be made of waterproof tack paper with an adhesive layer 30a laminated on one surface of the waterproof sheet 20a.

The waterproof sheet 20b is laminated over the entire surface of the base substrate 10 opposite the waterproof sheet 20a, and is attached by an adhesive layer 30c, which serves as the adhesive layer of the present invention. The waterproof sheet 20b can be a waterproof tack paper with an adhesive layer 30b laminated on one side of the waterproof sheet 20b.

The release paper 40 is constructed by applying a release agent (not shown) to one side of a release mount (not shown), and is releasably attached to the waterproof sheet 20b by an adhesive layer 30b.

The moisture detection tag 1 of this embodiment is configured as described above, so that the detection wirings 13a, 13b are arranged parallel to each other along the periphery of the base substrate 10, and while a portion of one side of the base substrate 10 is covered by the waterproof sheet 20a, the other portion is exposed.

The following describes how to use the moisture detection tag 1 configured as above and its function.

Figure 2 shows an example of how the moisture detection tag 1 shown in Figure 1 can be used.

The moisture detection tag 1 shown in FIG. 1 is attached to a floor surface 3 that is a detection area where a pipe 2 is installed, as shown in FIG. 2, for example, and is used to detect water leakage from the pipe 2. In this case, the release paper 40 is peeled off, and the moisture detection tag 1 is attached and fixed to the floor surface 3 by the exposed adhesive layer 30b.

Figure 3 is a diagram for explaining the action of the moisture detection tag 1 shown in Figure 1 when attached to the floor surface 3 as shown in Figure 2 and water leakage occurs from the pipe 2, (a) is a diagram showing the state when there is no water leakage from the pipe 2, and (b) is a diagram showing the state when water leakage occurs from the pipe 2. Note that in Figure 3, the waterproof sheet 20a is omitted for ease of explanation.

When the moisture detection tag 1 shown in FIG. 1 is attached to the floor surface 3 as shown in FIG. 2 and no water leakage is occurring from the pipe 2, the two detection wires 13a and 13b are not conductive and are in a non-conductive state as shown in FIG. 3(a).

On the other hand, when the moisture detection tag 1 shown in FIG. 1 is attached to the floor surface 3 as shown in FIG. 2, if a water leak occurs in the pipe 2, the moisture from the leak travels down the pipe 2 and accumulates on the floor surface 3, and then, as shown in FIG. 3(b), moisture 13c rises up from the edge of the base substrate 10 onto the moisture detection tag 1. Then, a short circuit occurs between the two detection wires 13a, 13b formed in parallel to each other on the base substrate 10 due to the generated moisture 13c, and the two detection wires 13a, 13b become conductive. Then, by detecting the conductive state between the detection wires 13a, 13b, it is possible to detect the occurrence of a water leak from the pipe 2.

In this way, when there is no water leakage from the pipe 2, there is no electrical continuity between the detection wires 13a and 13b. On the other hand, when there is water leakage from the pipe 2, there is electrical continuity between the detection wires 13a and 13b. Therefore, by detecting the electrical continuity between the detection wires 13a and 13b, it is possible to detect that there is water leakage from the pipe 2.

Below, we will explain a specific method for detecting the occurrence of a water leak from a pipe 2 using the moisture detection tag 1 by utilizing the above-mentioned action.

Figure 4 shows an example of a system for detecting water leakage from a pipe 2 using the moisture detection tag 1 shown in Figure 1.

As a system for detecting water leakage from the pipe 2 shown in FIG. 2 using the moisture detection tag 1 shown in FIG. 1, a system having a reader/writer 5 as a reading means capable of non-contact communication with the moisture detection tag 1, and a management computer 6 as a processing means connected to the reader/writer 5 via a wired or wireless connection, as shown in FIG. 4, is conceivable. Note that a handheld terminal with a built-in processing means as well as a reading means may also be used as the reader/writer, in which case the management computer is not necessary.

Figure 5 is a flowchart for explaining a method for detecting water leakage from pipe 2 when moisture detection tag 1 shown in Figure 1 is attached to floor surface 3 as shown in Figure 2 in the system shown in Figure 4.

In the moisture detection tag 1 shown in FIG. 1, when the reader/writer 5 is brought close to the moisture detection tag 1 and the reader/writer 5 detects the moisture detection tag 1 (step 1), the reader/writer 5 first supplies power to the moisture detection tag 1 and transmits a command to the moisture detection tag 1 to detect the electrical continuity between the detection wires 13a and 13b and transmit the detection result (step 2).

When the power supplied from the reader/writer 5 is obtained by the moisture detection tag 1 and the command sent from the reader/writer 5 is received by the IC chip 11 via the antenna 12 of the moisture detection tag 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 between the detection wires 13a, 13b is detected using the supplied current, and thus the conduction state between the detection wires 13a, 13b is detected (step 4). Here, when the moisture detection tag 1 is attached to the floor surface 3 as shown in FIG. 2 and no water leak is occurring from the pipe 2, the detection wires 13a, 13b are in a non-conductive state. In this state, even if a current is supplied between the detection wires 13a, 13b by the power supplied from the reader/writer 5, no current flows between the detection wires 13a, 13b because the detection wires 13a, 13b are in a non-conductive state, and as a result, the resistance value detected in the IC chip 11 becomes almost infinite.

In the IC chip 11, if the detected resistance value is nearly infinite, it is determined that there is no electrical continuity between the detection wirings 13a, 13b, and this determination result is converted into digital information as the detection result of the electrical continuity between the detection wirings 13a, 13b and is transmitted contactlessly to the reader/writer 5 via the antenna 12 (step 5). In addition, the resistance value detected by the IC chip 11 when the detection wires 13a and 13b are in a conductive state is the resistance value when the detection wires 13a and 13b are shorted by the moisture 13c, as described below, that is, the maximum resistance value when the detection wires 13a and 13b are connected to each other at the end opposite the end connected to the IC chip 11. Therefore, the resistance value for determining that the detection wires 13a and 13b are in a non-conductive state in the IC chip 11 is not nearly infinite, but may be a certain threshold value or more that is greater than the resistance value when the detection wires 13a and 13b are connected to each other at the end opposite the end connected to the IC chip 11.

On the other hand, when the moisture detection tag 1 is attached to the floor surface 3 as shown in FIG. 2 and water is leaking from the pipe 2, as described above, the detection wiring 13a and the detection wiring 13b are short-circuited by the moisture 13c and become conductive, so that the IC chip 11 detects the resistance value of the connection between the detection wiring 13a and the detection wiring 13b in the area where the moisture 13c is attached.

If the detection wires 13a and 13b are shorted by moisture 13c and thus in a conductive state, as described above, the detected resistance value will be at most the resistance value when the detection wires 13a and 13b are connected to each other at the end opposite the end connected to the IC chip 11. Therefore, in the IC chip 11, if the detected resistance value is equal to or less than the resistance value when the detection wires 13a and 13b are connected to each other at the end opposite the end connected to the IC chip 11, it is determined that there is conductivity between the detection wires 13a and 13b, and this determination result is converted into digital information as the detection result of the conductive state between the detection wires 13a and 13b and is transmitted contactlessly to the reader/writer 5 via the antenna 12. In addition, since the resistance value detected by the IC chip 11 when the detection wirings 13a, 13b are not conductive, as described above, is nearly infinite, the resistance value used by the IC chip 11 to determine that the detection wirings 13a, 13b are conductive may be a value equal to or less than a certain threshold value larger than the resistance value when the detection wirings 13a and 13b are connected to each other at the ends opposite the ends connected to the IC chip 11.

In this way, the reader/writer 5 transmits the electrical continuity state between the detection wirings 13a and 13b detected by the moisture detection tag 1 in a non-contact manner via the antenna 12.

When the detection result transmitted contactlessly from the moisture detection tag 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 transferred to the management computer 6 (step 7).

When the detection result transferred from the reader/writer 5 is received by the management computer 6 (step 8), the management computer 6 determines whether or not there is a water leak from the pipe 2 based on the detection result that was contactlessly transmitted from the moisture detection tag 1 to the reader/writer 5 and transferred to the management computer 6 (step 9). Specifically, if the detection result transferred from the reader/writer 5 to the management computer 6 shows that there is no electrical continuity between the detection wires 13a and 13b, it is determined that there is no water leak from the pipe 2, and if there is electrical continuity between the detection wires 13a and 13b, it is determined that there is a water leak from the pipe 2.

Here, we will explain the effect of having the two detection wirings 13a and 13b arranged parallel to each other along the periphery of the base substrate 10.

Figure 6 is a diagram to explain the effect of the moisture detection tag 1 shown in Figure 1 having two detection wires 13a, 13b arranged parallel to each other along the periphery of the base substrate 10.

As described above, in the moisture detection tag 1 shown in FIG. 1, when moisture is generated on the floor surface 3 to which the moisture detection tag 1 is attached, the generated moisture runs up from around the moisture detection tag 1 onto the base substrate 10 and adheres to the two detection wires 13a, 13b, causing the detection wires 13a, 13b to short-circuit, and the conductive state is transmitted non-contact from the IC chip 11 via the antenna 12, thereby detecting the generation of moisture. Therefore, in the moisture detection tag 1 shown in FIG. 1, the two detection wires 13a, 13b are arranged parallel to each other along the periphery of the base substrate 10, so that moisture generated in any direction around the moisture detection tag 1 can easily adhere to the two detection wires 13a, 13b, as shown in FIG. 6, making it easier to detect the generation of moisture.

In addition, waterproof sheets 20a, 20b, which are water-resistant, are laminated on the base substrate 10 to cover the antenna 13 and IC chip 11, thereby protecting the antenna 12 and IC chip from moisture.

Second Embodiment
7A and 7B are diagrams showing a second embodiment of the moisture detection tag of the present invention, in which (a) is a diagram viewed from the front, (b) is a cross-sectional view taken along the line A-A' shown in (a), and (c) is a diagram showing the configuration after removing the waterproof sheet 120a shown in (a).

As shown in FIG. 7, the moisture detection tag in this embodiment is a moisture detection tag 101 that has a different configuration of the base substrate 110 and waterproof sheets 120a, 120b compared to the one shown in FIG. 1.

In this embodiment, the base substrate 110 of the moisture detection tag 101 has three sets of perforations 114a to 114c that serve as folding sections. The three sets of perforations 114a to 114c include one set of perforations 114a that are arranged in series with a gap between them in one direction in the center of the base substrate 110, and two sets of perforations 114b, 114c that extend parallel to both sides of the perforation 114a. Each of the two sets of perforations 114b, 114c is also arranged in series with two gaps between them in one direction. In the base substrate 110 thus provided with the three sets of perforations 114a to 114c, the area between the perforations 114b and 114c becomes the protruding portion 116, and the areas between the perforations 114b, 114c and the edge of the base substrate 110 become the mounting portions 115a, 115b. The IC chip 11 and the antenna 12 are provided between the perforations 114a and 114c, and therefore are provided on the protruding portion 116, and part of the detection wiring 13a, 13b is provided on the mounting portions 115a, 115b. Note that it is sufficient that at least part of the detection wiring 13a, 13b is provided on the mounting portions 115a, 115b, and the entire wiring may be provided on the mounting portions 115a, 115b.

Waterproof sheet 120a has perforations 121a to 121c that face perforations 114a to 114c, and waterproof sheet 120b also has perforations (not shown) that face perforations 114a to 114c.

Figure 8 is a diagram showing an example of how the moisture detection tag 101 shown in Figure 7 can be used.

The moisture detection tag 1 shown in FIG. 7 is attached to a floor surface 3 that is a detection area where a pipe 2 is installed, as shown in FIG. 8, for example, and is used to detect water leakage from the pipe 2. In this case, the release paper 40 is peeled off, and the base material 110 and the waterproof sheets 120a, 120b are folded in half at the perforations 114a, 121a so that the surface where the adhesive layer 30b is exposed is on the inside, and the base material 110 and the waterproof sheets 120a, 120b are folded in half at the perforations 114b, 114c, 121b, 121c so that the surface where the adhesive layer 30b is exposed is on the outside.

Then, as shown in FIG. 8, the mounting portions 115a and 115b of the base substrate 110 abut against the floor surface 3 via the waterproof sheet 120b, and the protruding portions 116 of the base substrate 110 protrude from the mounting portions 115a and 115b and stand above the floor surface 3, and are attached and fixed to the floor surface 3 by the adhesive layer 30b.

In the moisture detection tag 101 fixed to the floor surface 3 as described above, similarly to the first embodiment, if water leaks from the pipe 2, the moisture from the leak adheres to the detection wires 13a, 13b, causing the detection wires 13a, 13b to short out, thereby detecting the water leak. In this case, since the two detection wires 13a, 13b are arranged parallel to each other along the periphery of the base substrate 110, moisture generated in any direction around the moisture detection tag 101 can easily adhere to the two detection wires 13a, 13b, making it easier to detect the generation of moisture.

Here, we will explain the unique effects of using the moisture detection tag 101 shown in Figure 7 as shown in Figure 8.

Figure 9 is a diagram to explain the unique effect when the moisture detection tag 101 shown in Figure 7 is used as shown in Figure 8.

In the moisture detection tag 101 shown in FIG. 7, as shown in FIG. 8, the mounting parts 115a, 115b of the base substrate 110 are in contact with the floor surface 3 via the waterproof sheet 120b, and the protruding parts 116 of the base substrate 110 are attached and fixed to the floor surface 3 by the adhesive layer 30b so that they protrude from the mounting parts 115a, 115b and stand on the floor surface 3. In this state, the antenna 12 and IC chip 11 are provided on the protruding parts 116 as described above. As shown in FIG. 9, even if moisture 13c generated on the floor surface 3 around the moisture detection tag 101 runs up onto the base substrate 110, the running up moisture 13c is less likely to adhere to the antenna 12 and IC chip 11, and the antenna 12 and IC chip 11 can be protected from moisture.

In addition, when the mounting portions 115a, 115b of the base substrate 110 are in contact with the floor surface 3 via the waterproof sheet 120b and the protrusions 116 of the base substrate 110 are attached and fixed to the floor surface 3 by the adhesive layer 30b so as to protrude from the mounting portions 115a, 115b and stand on the floor surface 3, the protrusions 116 folded in half are bonded to each other at their opposing surfaces by the adhesive layer 30b laminated on the surface of the waterproof sheet 120b opposite the surface laminated with the base substrate 110, so that the protrusions 116 can be easily maintained in a state in which they protrude from the mounting portions 115a, 115b and stand on the floor surface 3. In this embodiment, the waterproof sheet 120b is laminated on the mounting surface of the base substrate 110 to the floor surface 3, so the adhesive layer 30b laminated on the surface opposite to the laminated surface of the waterproof sheet 120b acts as an adhesive layer, and when the protrusion 116 is folded in half, the opposing surfaces are adhered to each other. However, if the waterproof sheet 120b is not laminated on the mounting surface of the base substrate 110 to the floor surface 3, as described above, the adhesive layer 30c laminated on the surface of the base substrate 110 where the antenna 12 and the detection wiring 13a, 13b are not provided acts as an adhesive layer, and when the protrusion 116 is folded in half, the opposing surfaces are adhered to each other.

In this embodiment, the perforations 114a-114c and 121a-121c are used as examples of the folds for folding the base material 110 and the waterproof sheets 120a and 120b. However, slits, creasing, etc. may also be used as the folds for folding the base material 110 and the waterproof sheets 120a and 120b.

Other Embodiments
In the above-described embodiment, the two detection wires 13a, 13b extend parallel to each other along the four edges of the base substrate 10, 110, and are therefore provided parallel to each other along the periphery of the base substrate 10, 110, but the two detection wires may not be parallel to each other at some of the four edges of the base substrate due to constraints imposed by the configuration and design of the base substrate. In particular, in the case where the waterproof sheets 20a, 120a are laminated on the surface of the base substrate 10, 110 on which the detection wires 13a, 13b are provided, as shown in the above-described embodiment, the two detection wires 13a, 13b do not need to be provided parallel to each other in the area where the waterproof sheets 20a, 120a are laminated, since moisture generated in the surroundings does not adhere to the detection wires 13a, 13b in the first place. In this manner, the present invention defines the two detection wirings as being arranged parallel to each other along the peripheral portion of the base substrate, including a configuration in which the two detection wirings are not parallel to each other at some of the four end edges of the base substrate.

Figure 10 shows another embodiment of the moisture detection tag of the present invention, showing only the configuration on the base substrate.

As shown in FIG. 10(a), the two detection wirings 113a, 113b extend parallel to each other along the three edges of the base substrate 10, but one of the detection wirings 113a may not be provided in a portion of one of the remaining edges of the base substrate 10.

Also, as shown in FIG. 10(b), the two detection wires 213a, 213b may extend parallel to each other along the two end sides of the base substrate 10, but one of the detection wires 213a, 213b may not be provided at each of the remaining two end sides of the base substrate 10.Also, as shown in FIG. 10(b), the two detection wires 213a, 213b may each be connected at one end to the IC chip 11, and extend from there by branching into two.

REFERENCE SIGNS LIST 1,101 moisture detection tag 2 pipe 3 floor surface 5 reader/writer 6 management computer 10,110 base material 11 IC chip 12 antenna 13a,13b,113a,113b,213a,213b detection wiring 13c moisture 20a,20b,120a,120b waterproof sheet 30a to 30c adhesive layer 40 release paper 115a,115b attachment portion 116 protrusion 114a to 114c,121a to 121c perforation

Claims (3)

A moisture detection tag that is attached to a detection area and detects the occurrence of moisture in the detection area,
A base material;
An antenna and two detection wires provided on the base material;
a detection means that is connected to the antenna and the two detection wires and is provided on the base material, the detection means detecting a conduction state between the two detection wires and transmitting the detection result in a non-contact manner via the antenna,
The two detection wirings are provided parallel to each other along a peripheral portion of the base material ,
The base material is
an attachment portion that faces and comes into contact with the detection area when the moisture detection tag is attached to the detection area;
a protrusion that is foldably connected to the attachment portion via a folding portion and that protrudes from the attachment portion when the moisture detection tag is attached to the detection area,
The antenna and the detector are provided on the protrusion,
A moisture detection tag , wherein at least a portion of the two detection wires is provided on the attachment portion . The moisture detection tag according to claim 1 ,
The protruding portion is configured to be foldable in two,
The attachment portion is connected to each of the two folded regions of the protruding portion via the folded portion,
The moisture detection tag has an adhesive layer laminated on at least the surfaces of the protruding parts that face each other when the protruding parts are folded in half. The moisture detection tag according to claim 1 or 2 ,
A moisture detection tag comprising a water-resistant protective layer laminated on said base substrate so as to cover said antenna and said detection means.

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