Capacitance detection label and labeled container

Abstract

A capacitance detection tag provided in a container having a housing part for housing contents whose upper surface is displaced in the height direction, the capacitance detection tag comprising: electrodes having a first electrode and a second electrode provided at a position not overlapping the first electrode; an antenna unit capable of contactless communication with an external device; and an IC chip which is electrically connected to the electrode and the antenna unit and measures capacitance formed between the first electrode and the second electrode. The IC chip performs non-contact communication with an external device via the antenna unit and transmits the capacitance measured by the IC chip to the external device.

Description

Technical Field

[0001] This invention relates to capacitance detection tags and tagged containers.

[0002] This application claims priority with respect to Japan Patent Application No. 2022-144592, filed on September 12, 2022, the contents of which are incorporated herein by reference. Background Technology

[0003] Currently, as a detection device for detecting the water level (contents) contained in a container, there are, for example, float-type devices that detect the water level based on the movement of a float floating on the liquid surface (see Patent Document 1). Additionally, capacitance-based level detection devices that detect changes in the capacitance of multiple detection electrodes are known (see Patent Document 2).

[0004] However, for containers used in everyday life to hold contents such as beverages and household detergents, the need to check the remaining amount can be confirmed by pre-forming graduations on the container or label, as shown in Patent Document 3.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2002-83364

[0006] Patent Document 2: Japanese Patent Application Publication No. 2020-67366

[0007] Patent Document 3: Japanese Patent Application Publication No. 2011-189955 Summary of the Invention

[0008] However, the detection devices described in Patent Documents 1 and 2 require an external power source, making it impossible to detect the contents of containers in locations without a nearby external power supply. Furthermore, the detection section of the devices described in Patent Documents 1 and 2 comes into contact with the contents, making them unsuitable for use with beverages or similar items from a hygiene perspective. Moreover, these water level detection devices are mostly large and specialized, making them difficult to install or use easily with various containers.

[0009] Furthermore, the container described in Patent Document 3 is not preferred for cosmetics or other products that are visually appealing to consumers. Moreover, containers using graduations need to be configured such that the container body and the label wrapped around it are transparent or semi-transparent, allowing for comparison of the remaining contents with the graduations. In addition, as a method for determining the remaining amount in a container, there are methods that rely on weight rather than water level. In this case, the measuring instrument must be held at all times, making it difficult to determine the volume outside of one's home.

[0010] The present invention was made in view of this situation, and its object is to provide a capacitance detection tag that is easy to install on a container and can detect the capacity of the contents inside the container, as well as a tagged container having the capacitance detection tag.

[0011] To address the above problems, the present invention proposes the following method.

[0012] The first aspect of the present invention relates to a capacitance detection tag disposed in a container having a receiving portion for accommodating contents whose upper surface has shifted in the height direction. The capacitance detection tag includes: an electrode having a first electrode and a second electrode disposed at a position not overlapping the first electrode; an antenna capable of contactless communication with an external instrument; and an IC chip electrically connected to the electrode and the antenna, measuring the capacitance formed between the first and second electrodes. The IC chip communicates contactlessly with the external instrument via the antenna, transmitting the capacitance measured by the IC chip to the external instrument.

[0013] The effects of the invention

[0014] According to the capacitance detection tag and the tagged container of the present invention, it is possible to provide a capacitance detection tag that is easy to install in a container and detects the capacity of the contents inside the container, and a tagged container having a capacitance detection tag. Attached Figure Description

[0015] Figure 1 This is a perspective view of a labeled container according to the first embodiment of the present invention.

[0016] Figure 2 It means Figure 1 Front view of the structure of the labeled container with an IC tag seal.

[0017] Figure 3A This is a diagram representing the initial state of the labeled container.

[0018] Figure 3B This is a diagram of the labeled container showing a reduced state of water within the containment section compared to its initial state.

[0019] Figure 4 It means Figure 1 A graph showing the correlation between the capacitance of the electrodes on a labeled container and the water level.

[0020] Figure 5 This is a diagram illustrating the structure of the capacitance detection tag of the tagged container according to the second embodiment of the present invention.

[0021] Figure 6This is a diagram showing the labeled container in its opened state after the cap of the plastic bottle has been removed.

[0022] Figure 7 It means Figure 5 A graph showing the correlation between the capacitance of the electrodes on a labeled container and the water level.

[0023] Figure 8 This is a diagram showing the structure of the capacitance detection tag 1B of the tagged container 10B according to the third embodiment of the present invention.

[0024] Figure 9 It means Figure 8 A graph showing the correlation between the capacitance of the electrodes on a labeled container and the water level.

[0025] Figure 10 It means Figure 1 A diagram of a variant of a labeled container.

[0026] Figure 11 It means Figure 8 A diagram showing a variation of a labeled container.

[0027] Figure 12 This is a diagram showing the structure of the capacitance detection system according to the fourth embodiment.

[0028] Figure 13 This is a diagram used to illustrate a specific display example on an external instrument.

[0029] Figure 14 This is a diagram used to illustrate a specific display example on an external instrument. Detailed Implementation

[0030] (First Implementation)

[0031] Reference Figures 1 to 4 The first embodiment of the present invention will be described. Furthermore, in the embodiments and variations described below, corresponding structures are labeled with the same reference numerals, and sometimes repeated descriptions are omitted. Also, in the following description, expressions such as "parallel," "orthogonal," "center," and "coaxial," indicating relative or absolute configurations, not only strictly indicate such configurations but also indicate a state in which relative displacement occurs by tolerance or the degree to which the same function can be obtained.

[0032] Figure 1 This is a perspective view of the labeled container 10 according to the first embodiment of the present invention.

[0033] Regarding the labeled container 10, in this embodiment, the plastic bottle 2 for beverages, which serves as the container, is placed on the ground and extends vertically. However, the labeled container 10 may also be placed horizontally during storage, handling, or other processes.

[0034] In the following description of the labeled container 10, the direction in which the plastic bottle 2 extends is defined as the vertical direction A, the top is defined as the upper side A1, and the ground side, i.e., the bottom, is defined as the lower side A2. In this embodiment, the vertical direction A is the vertical direction.

[0035] The labeled container 10 includes: a plastic bottle 2; and a seal 100 with an IC tag, which contains a capacitance detection tag 1.

[0036] [Plastic bottle (container) 2]

[0037] The plastic bottle (container) 2 can utilize plastic bottles of commonly known sizes and shapes capable of carrying and transporting. The plastic bottle 2 has a plastic bottle body 20 and a cap (sealing part) 25.

[0038] [Plastic bottle body (container body) 20]

[0039] The plastic bottle body (container body) 20 has a body part 21 and an outlet part 23.

[0040] The body portion 21 extends in the vertical direction A. The body portion 21 has a housing portion 22 inside. The housing portion is, for example, a space capable of housing water W (contents).

[0041] A seal 100 with an IC tag, described later, is installed on the outer surface 21a of the body portion 21 in the circumferential direction R. Furthermore, a label sheet displaying information such as the product name, product details, and images can be affixed to the body portion 21 to cover the outer surface 21a, or the information display can be printed on the outer surface 21a as described above. In this embodiment, the body portion 21 is made transparent, but this is not particularly limited; it may also be opaque.

[0042] The injection outlet 23 is an annular component connected to the upper side A1 of the body part 21. An external thread 23a is formed on the outer surface of the injection outlet, which engages with an internal thread (not shown) of the cover 25 described later.

[0043] An opening 24 is formed at the inlet / outlet 23. The opening 24 is an inlet / outlet that allows water W to enter and exit relative to the receiving section 22.

[0044] If the user allows water W to flow out of or into the receiving section 22 through the opening 24, the water level WA (height of the upper surface (water level)) of the water W contained in the receiving section 22 will shift (change). Because of gravity, the water W shifts vertically within the receiving section 22, therefore the height direction of the water level WA is the vertical direction. That is, in this embodiment, the height direction is the same as the vertical direction A.

[0045] Here, as Figure 1 As shown, the area within the containment section 22 that holds water W in the vertical direction A is defined as the containment area. The containment area is also referred to as the region where the water level WA of the body section 21 at its highest point (where the water level WA is highest) changes to the bottom surface of the body section 21 at its lowest point (where the water level WA is lowest). Furthermore, the positions of the highest and lowest water levels WA within the containment section 22 are not particularly limited; the containment area can be defined as long as it is set at a predetermined position within the containment section 22.

[0046] [Cap (Sealing Part) 25]

[0047] The cap (sealing part) 25 can be removed from the plastic bottle body (container body) 20 to open and close the opening 24. The cap 25 has an internal thread (not shown) on its inner side, which engages with the external thread of the dispensing outlet to open and close the opening 24.

[0048] The plastic bottle 2 is formed, for example, by connecting the body portion 21, the outlet portion 23, and the cap 25 of the plastic bottle body 20 in this order from the lower side A2 to the upper side A1 along the vertical direction A.

[0049] [Seal with IC tag 100]

[0050] like Figure 1 As shown, the seal 100 with the IC tag is affixed to the outer surface 21a of the body part 21 using an adhesive or the like, and is positioned to be longer in the vertical direction A.

[0051] The seal 100 with the IC tag has a substrate 3 and a capacitance detection tag 1.

[0052] [Substrate 3]

[0053] Figure 2 This is a front view showing the seal 100 with an IC tag on the tagged container 10.

[0054] Substrate 3 is an insulating sheet-like substrate. For example... Figure 2 As shown, the substrate 3 is configured such that its back side 3g is adhered to the outer side 21a of the body portion 21 of the plastic bottle body 20 of the plastic bottle 2. According to this structure, a seal 100 with an IC tag is provided on the plastic bottle 2.

[0055] The substrate 3 is formed in a rectangular shape on its outer surface 21a, having long and short sides that are opposite each other. Preferably, the substrate 3 is flexible enough to be adhered to its outer surface 21a, which can be bent along the circumferential direction R of the body portion 21. For example... Figure 1 As shown, in this embodiment, the substrate 3 is formed in a circumferentially curved manner along the outer surface 21a of the body portion 21, but it is not particularly limited and may also be formed along a tangent plane relative to a portion of the outer surface 21a of the body portion 21.

[0056] In this embodiment, the substrate 3 is formed, for example, using a PET substrate. However, the material of the substrate 3 is not particularly limited; for example, it can be epoxy glass, a paper substrate, or a substrate composed of multiple materials. Using a paper substrate can further reduce the environmental impact. Additionally, the substrate 3 can be transparent or opaque.

[0057] The substrate 3 is adhered to the plastic bottle 2 using an adhesive or similar agent. The adhesive can be applied to the back 3g of the plastic bottle 2, or it can be applied to the plastic bottle 2 itself, thereby adhering the substrate 3. The electrodes 4, IC chip 5, and antenna 6 of the capacitance detection tag 1 (described later) are mounted on the surface 3f of the substrate 3. The electrodes 4, IC chip 5, and antenna 6 constitute the support for the capacitance detection tag 1. Furthermore, the substrate 3 is not an essential component.

[0058] [Capacitance Testing Label 1]

[0059] A capacitance detection tag 1 is disposed on a plastic bottle 2. The capacitance detection tag 1 is, for example, a tag that enables contactless communication with contactless external instruments such as smartphones or readers that support UHF or NFC, and can detect the water level WA of the water W contained in the containment section 22 of the plastic bottle 2. The capacitance detection tag 1 includes electrodes 4, an IC chip 5, and an antenna 6.

[0060] [Electrode 4]

[0061] like Figure 2 As shown, electrode 4 is disposed on the surface 3f of substrate 3. Electrode 4 is a detection part for detecting the water level WA of water W contained in the receiving part 22 of plastic bottle 2. Regarding electrode 4, examples of manufacturing methods include laser cutting of metal plates and foils, punching, etching of metal foils and metal layers, and arrangement of metal wires. Electrode 4 has a first electrode 41 and a second electrode 42.

[0062] [First Electrode 41]

[0063] A first electrode 41 is disposed on the surface 3f of the substrate 3 and extends along the vertical direction A. The first electrode 41 is formed into a rectangle along the vertical direction A, having a long side and a short side facing each other. Figure 1As shown, the first electrode 41 is disposed in the detectable area F opposite to the receiving area, separated from the outer surface 21a of the plastic bottle 2. Furthermore, only a portion of the first electrode 41 needs to be disposed in the detectable area F. The first electrode 41 is positioned on a side R1 further in the circumferential direction than the central axis O1 of the substrate 3 in the vertical direction A. The first electrode 41 has a first water level detection portion 410 and a first electrode connection portion 411.

[0064] The first water level detection unit 410 is a plate-shaped electrode that detects the water level WA of the water W contained in the receiving section 22 of the plastic bottle 2. For example... Figure 2 As shown, the first water level detection unit 410 extends along the vertical direction A and is formed in a rectangular shape. In addition, the size and shape of the first water level detection unit 410 are not particularly limited.

[0065] The first electrode connection part 411 electrically connects the first water level detection part 410 and the IC chip 5. The first electrode connection part 411 is not an essential structure, and the first water level detection part 410 and the IC chip 5 can be directly connected without it.

[0066] [Second electrode 42]

[0067] The second electrode 42 is disposed on the surface 3f of the substrate 3 and extends along the vertical direction A. The second electrode 42 is formed into a rectangle along the vertical direction A, having a long side and a short side facing each other. Figure 1 As shown, the second electrode 42 is disposed within the detectable region F in the vertical direction A. Furthermore, only a portion of the second electrode 42 needs to be disposed within the detectable region F. The second electrode 42 is positioned on the opposite side R2, further circumferentially than the central axis O1. The second electrode 42 has a second water level detection section 420 and a second electrode connection section 421.

[0068] The second water level detection unit 420 is a plate-shaped electrode that detects the water level WA of the water W contained in the receiving section 22 of the plastic bottle 2. For example... Figure 2 As shown, the second water level detection unit 420 extends along the vertical direction A and is formed in a rectangular shape. Furthermore, the size and shape of the second water level detection unit 420 are not particularly limited.

[0069] The second electrode connection part 421 electrically connects the second water level detection part 420 and the IC chip 5. The second electrode connection part 421 is not an essential structure, and the second water level detection part 420 and the IC chip 5 can be directly connected without it.

[0070] The first electrode 41 and the second electrode 42 are positioned opposite each other in the circumferential direction R, separated by a central axis O1. A space S1 is formed between the first electrode 41 and the second electrode 42. This space S1 extends at a substantially uniform interval in the vertical direction A. That is, the first electrode 41 and the second electrode 42 are arranged in the detectable region F at a substantially uniform interval in the vertical direction A.

[0071] Electrode 4 applies a voltage to antenna section 6 (described later) by generating a high-frequency voltage using a high-frequency electromagnetic field produced by a non-contact external instrument transceiver circuit (not shown), thus accumulating capacitance between the first electrode 41 and the second electrode 42. This capacitance changes with the capacitance caused by changes in the water level WA of the water W.

[0072] [IC Chip 5]

[0073] like Figure 2 As shown, the IC chip 5 is disposed on the surface 3f of the substrate 3. The IC chip 5 is configured to be positioned higher than the first electrode 41 and the second electrode 42 by a distance A1, and is connected to both the first electrode 41 and the second electrode 42. The IC chip 5 communicates with external instruments via the antenna section 6, realizing the wireless communication function of the capacitance detection tag 1. Specifically, the IC chip 5 is powered via the antenna section 6. Furthermore, the IC chip 5 is capable of wireless communication, receiving commands from external instruments, and responding to the commands through communication.

[0074] In this embodiment, the IC chip 5 has the following function: it receives commands from an external instrument to measure the capacitance accumulated between the first electrode 41 and the second electrode 42. Furthermore, the IC chip 5 can transmit the measured capacitance to the external instrument via wireless communication.

[0075] Furthermore, the IC chip 5 can detect the water level WA by storing the correlation between the measured capacitance and the water level WA of the water W. Specifically, the space S1 between the first electrode 41 and the second electrode 42 extends at approximately uniform intervals, so the water level WA of the water W is approximately proportional to the increase or decrease of the capacitance. That is, the IC chip 5 can detect the water level WA of the water W contained in the housing 22 based on the measured capacitance.

[0076] Furthermore, IC chip 5 may not store the correlation between the measured capacitance and the water level WA of water W. In this case, an external instrument can detect the water level WA corresponding to the change in capacitance obtained from IC chip 5 via wireless communication by storing the correlation between the capacitance and the water level WA measured by IC chip 5 in the application.

[0077] Furthermore, the IC chip 5 can store information related to water W and identification information for the plastic bottle 2 on which the IC chip 5 is installed. In this case, the IC chip 5 can send the information related to water W and the identification information to an external instrument. Moreover, the IC chip 5 can use an external instrument to add or update information.

[0078] [Antenna Section 6]

[0079] like Figure 2 As shown, the antenna section 6 is disposed on the surface 3f of the substrate 3. The antenna section 6 is a ring-shaped conductor configured to be positioned higher than the IC chip 5 (A1) and connected to the IC chip 5. The antenna section 6 can use currently known antennas, for example, designed with antenna length and antenna linewidth corresponding to the UHF band and HF band. In this embodiment, the antenna section 6 is formed in a spiral shape with a central axis O2 as the center, arranged in a circular shape drawn in the thickness direction of the substrate 3 orthogonal to the circumferential direction R. Furthermore, the placement position of the antenna section 6 is not particularly limited.

[0080] Furthermore, in this embodiment, the base end of the antenna section 6 near the central axis O2 and the front end of the conductor formed on the outermost periphery of the antenna section 6 are connected by a slit or by forming a through hole and by bridging wiring 60 on the back side 3g of the substrate 3. However, this is not particularly limited, and wiring circuits can also be provided on the surface 3f of the substrate 3 by using jumper wiring at the base end and the front end.

[0081] The antenna section 6 enables contactless communication with contactless external instruments such as readers and mobile phones. The IC chip 5, which communicates with external instruments using the antenna section 6, can be powered and receive commands from the external instruments to perform communication in response to those commands.

[0082] (effect)

[0083] Next, the function of the labeled container 10 will be explained.

[0084] Figure 3A This is a diagram representing the labeled container 10 in its initial state. Figure 3B This is a diagram of a labeled container 10 showing the reduced state of water W within containment section 22 relative to its initial state.

[0085] First, the labeled container 10 is formed by attaching a seal 100 with an IC tag to the plastic bottle 2 using an adhesive or similar agent. For example... Figure 3A As shown in the initial state, water W is contained in the receiving section 22 of the plastic bottle 2 with the label container 10. At this time, the water level WA of water W is set as the first water level P1.

[0086] Next, the user uses the water W contained in the containment section 22 of the plastic bottle 2, such as... Figure 3B As shown, the water level W in the containment section 22 decreases from the initial state. At this time, the water level WA of W is set to the second water level P2. The water level WA of W decreases (changes) from the first water level P1 to the second water level P2.

[0087] Figure 4 This is a graph showing the relationship between the water level WA in the containment area of ​​the labeled container 1's containment section 22 and the capacitance of the detectable area F measured by the IC chip 5. Figure 4 In the graph, the horizontal axis represents the water level WA, and the vertical axis represents the capacitance. The water level WA is the bottom surface of the lowest part of the body 21 on the left, indicating that the water level WA rises higher and higher towards the right, above A1 in the vertical direction.

[0088] If the water level WA decreases (changes) from the first water level P1 to the second water level P2, then as follows Figure 4 As shown, the capacitance also decreases proportionally to the water level WA. The IC chip 5 can receive commands from an external instrument to measure this changing capacitance and transmit the measured capacitance to the external instrument via wireless communication.

[0089] In this embodiment, the capacitance detection tag 1 has electrodes 4 arranged at approximately uniform intervals in the detectable area F along the vertical direction A. Furthermore, the IC chip 5 is capable of measuring the capacitance between the first electrode 41 and the second electrode 42 of the electrodes 4. Therefore, the IC chip 5 is capable of detecting the water level WA of the water W contained in the receiving portion 22 of the plastic bottle 2.

[0090] Furthermore, in this embodiment, the IC chip 5 of the capacitance detection tag 1 can measure the capacitance between the first electrode 41 and the second electrode 42 of the electrode 4. Therefore, the IC chip 5 can detect the water level WA by storing the correlation between the measured capacitance and the water level WA.

[0091] Furthermore, in this embodiment, the seal 100 with the IC tag and capacitance detection tag 1 can be used without direct contact with water W. Therefore, it can be used safely in terms of hygiene and can be appropriately used in various scenarios. In addition, the container body of the plastic bottle 2 can also be opaque, thus making it easy to use with various containers.

[0092] Furthermore, in this embodiment, the seal 100 with the IC tag and the capacitance detection tag 1 can be reused repeatedly. Therefore, costs can be reduced.

[0093] Furthermore, in this embodiment, the IC-labeled seal 100 with the capacitance detection tag 1 can be easily affixed to the plastic bottle 2 without requiring a power source. Therefore, the IC-labeled seal 100 can be used regardless of the location.

[0094] In addition, the structure is formed by attaching the IC tag-bearing seal 100 with the capacitance detection tag 1 to the plastic bottle 2, but the capacitance detection tag 1 can also be integrally formed with the plastic bottle body 20 by embedding or the like during the manufacturing of the plastic bottle 2.

[0095] The first embodiment and its variations of the present invention have been described in detail above with reference to the accompanying drawings. However, the specific structure is not limited to this embodiment and includes design changes that do not depart from the spirit of the present invention. Furthermore, the structural elements shown in the above-described embodiments, the embodiments described below, and the variations can be appropriately combined and configured.

[0096] (Second Implementation)

[0097] Next, refer to Figures 5 to 7 The second embodiment of the present invention will be described. In the following description, structures common to those already described will be labeled with the same reference numerals, and repeated descriptions will be omitted. Furthermore, the capacitance detection label differs from that of the first embodiment in any of the following embodiments. Therefore, the following description will focus on the differences from the first embodiment.

[0098] Figure 5 This is a diagram showing the structure of the capacitance detection tag 1A of the tagged container 10A according to the second embodiment of the present invention.

[0099] Compared to the first embodiment, the capacitance detection tag 1A is positioned opposite to the vertical direction A of the capacitance detection tag 1A relative to the plastic bottle 2.

[0100] like Figure 5 As shown, substrate 3A is adhered to the plastic bottle body 20 and cap (sealing part) 25 of the plastic bottle 2. According to this structure, a seal 100A with an IC tag is provided on the plastic bottle 2.

[0101] like Figure 5 As shown, electrode 4A is disposed on surface 3Af of substrate 3A, and has a first electrode 41A and a second electrode 42A.

[0102] The first electrode 41A is disposed on the surface 3Af of the substrate 3A and extends along the vertical direction A.

[0103] The first electrode 41A is positioned on the side R1, which is further circumferentially than the central axis O1 of the substrate 3A. The first electrode 41A has a first electrode portion 412, a second electrode portion 413, a connecting portion 414, and a first electrode connecting portion 411.

[0104] The first electrode portion 412 is formed into a slender rectangle along the vertical direction A, and is formed into a rectangular shape with long sides and short sides facing each other.

[0105] Compared to the first electrode portion 412, the second electrode portion 413 has a larger contact area with the outer surface 21a (plastic bottle 2) of the detectable area F. Specifically, the second electrode portion 413 is formed as a rectangle with a wider circumferential direction R than the first electrode portion 412, and is formed as a rectangle with long sides along the circumferential direction R and short sides along the vertical direction A. Therefore, when viewed from the front, the area of ​​overlap between the second electrode portion 413 and the detectable area F is larger than that of the first electrode portion 412. There are multiple second electrode portions 413, and in this embodiment there are seven. In addition, the multiple second electrode portions 413 are approximately the same in shape and size. Approximately the same size means that the dimension in the vertical direction A and the dimension in the direction perpendicular to the vertical direction A are the same.

[0106] The connecting portion 414 is formed into an elongated rectangle along the vertical direction A, having a rectangular shape with opposing long and short sides. The circumferential width R of the connecting portion 414 is approximately the same as that of the first electrode portion 412. Figure 5 As shown, the connecting part 414 extends across the plastic bottle body 20 and the cap 25.

[0107] Here, the strength of the connection 414 spanning the plastic bottle body 20 and the cap 25, and the substrate 3A, is weaker than the force required for the user to remove the cap 25. Therefore, if the user removes the cap 25, the portion of the connection 414 and the substrate 3A attached to the cap 25 is damaged and removed.

[0108] The first electrode portion 412 connects to a plurality of second electrode portions 413 respectively. The first electrode portion 412 and the second electrode portion 413 are alternately arranged along the vertical direction A. In addition, the connecting portion 414 connects the plurality of second electrode portions 413 that are closest to the cover 25 and are as follows: Figure 5 As shown, the second electrode portion 413 provided on the plastic bottle body 20 of the plastic bottle 2 and the second electrode portion 413 provided on the cap 25 in a manner adjacent to the second electrode portion 413 are connected.

[0109] The second electrode 42A, like the first electrode 41A, is disposed on the surface 3Af of the substrate 3A and extends in the vertical direction A. The second electrode 42A is positioned on the other side R2, which is further away from the central axis O1 of the substrate 3A in the circumferential direction R. The second electrode 42A, like the first electrode 41A, has a first electrode portion 422, a second electrode portion 423, a connecting portion 424, and a second electrode connecting portion 421.

[0110] The first electrode 41A and the second electrode 42A are opposite each other in the circumferential direction R, separated by the central axis O1. A space S1 is formed between the first electrode 41A and the second electrode 42A, extending at approximately uniform intervals in the vertical direction A.

[0111] Furthermore, the second electrode portion 413 and the second electrode portion 423 provided on the cover 25 are not located in the detectable area F, but if a voltage is applied, a slight capacitance accumulates between the second electrode portion 413 and the second electrode portion 423. The IC chip 5 is able to measure this capacitance.

[0112] (effect)

[0113] Next, the function of the labeled container 10A will be explained.

[0114] Figure 6 This is a diagram of a labeled container 10 in its opened state after the cap 25 of the plastic bottle 2 has been removed from the main body 20 of the plastic bottle. Figure 7 This is a graph showing the relationship between the capacitance of the 4A electrode in the 10A labeled container and the water level WA.

[0115] First, such as Figure 7 As shown, IC chip 5 is in Figure 5 In the unopened state of the labeled container 10A shown, the capacitance accumulated at the first electrode 41A and the second electrode 42A is measured by communicating with an external instrument. The total capacitance at this point is designated as capacitance Q1.

[0116] Here, in the second embodiment, compared to the first embodiment, the space S1 between the first electrode 41A and the second electrode 42A extends at a substantially uniform interval, but has first electrode portions 412 and second electrode portions 413 of different sizes. Therefore, the capacitance relative to the water level WA of the water W is formed as follows: Figure 7 The diagram shows an interlaced correlation. IC chip 5 can analyze the measured capacitance and water level WA. Figure 7 The correlation shown is stored to detect the water level WA.

[0117] The user removed water W, therefore from Figure 5 The unopened state of the labeled container 10A is shown as follows: Figure 6 The cap 25 of the plastic bottle 2 is removed as shown in the labeled container 10A. The connecting part 414 and the substrate 3A are then broken and removed, and the electrical connection between the second electrode part 413 and the second electrode part 423 provided on the cap 25 is broken.

[0118] IC chip 5 in Figure 6 In the unsealed state of the labeled container 10A shown, the capacitance accumulated at the first electrode 41A and the second electrode 42A is measured by communicating with an external instrument. Thus, the total capacitance becomes capacitance Q2, which is slightly smaller than capacitance Q1. That is, by disconnecting the electrical connection between the second electrode portion 413 and the second electrode portion 423 provided on the cover 25, the capacitance of electrode 4A changes even if the water level WA of the water W does not change.

[0119] In this embodiment, the IC chip 5 can detect opening of the unopened capacitor by storing information about the capacitor in the unopened state.

[0120] Then, the user removes water W, and if the water level is as follows... Figure 6 As shown, the capacitance decreases gradually from P6 to P1. In this embodiment, the tagged container 10A has a first electrode portion 412 and a second electrode portion 413 of different sizes. Therefore, the difference in capacitance with respect to the change of each water level WA varies greatly, which can improve the measurement accuracy of the IC chip 5, and can detect the water level WA in stages, such as water levels P1 to P6.

[0121] The second embodiment of the present invention has been described in detail above with reference to the accompanying drawings. However, the specific structure is not limited to this embodiment and includes design changes that do not depart from the spirit of the invention. Furthermore, the structural elements shown in the above embodiment and the variations shown below can be appropriately combined and configured.

[0122] (Third Implementation)

[0123] Next, refer to Figure 8 and Figure 9 The third embodiment of the present invention will be described. In the following description, common structures will be labeled with the same reference numerals, and repeated descriptions will be omitted. Furthermore, each of the following embodiments differs from the first embodiment in terms of electrodes. Therefore, the following description will focus on the differences from the first embodiment.

[0124] Figure 8 This is a diagram showing the structure of the capacitance detection tag 1B of the tagged container 10B according to the third embodiment of the present invention.

[0125] like Figure 8 As shown, electrode 4B is disposed on the surface 3f of substrate 3, and has a first electrode 41B and a second electrode 42B.

[0126] The first electrode 41B is disposed on the surface 3f of the substrate 3 and extends along the vertical direction A. The first electrode 41B is positioned on the side R1, which is further circumferentially than the central axis O1 of the substrate 3. The first electrode 41B has a first electrode portion 412B, a second electrode portion 413B, and a first electrode connecting portion 411.

[0127] The first electrode portion 412B is formed into a slender rectangle along the vertical direction A.

[0128] In this embodiment, one second electrode portion 413B is provided at a position A2 lower than the central axis O3, which passes through the center of the substrate 3 in the vertical direction A and is orthogonal to the vertical direction A. Specifically, the second electrode portion 413B is positioned close to the bottom surface of the plastic bottle 2.

[0129] The second electrode 42B is disposed on the surface 3f of the substrate 3 in the same manner as the first electrode 41B and extends in the vertical direction A. The second electrode 42B is positioned on the other side R2, which is further away from the central axis O1 of the substrate 3 in the circumferential direction R. Like the first electrode 41B, the second electrode 42B has a first electrode portion 422B and a second electrode portion 423B.

[0130] The first electrode 41B and the second electrode 42B are opposite each other in the circumferential direction R, separated by a central axis O1. A space S1 is formed between the first electrode 41B and the second electrode 42B, extending at approximately uniform intervals in the vertical direction A. In addition, a slight gap S2 is formed between the first electrode portion 412B of the first electrode 41B and the first electrode portion 422B of the second electrode 42B.

[0131] (effect)

[0132] Next, the function of the labeled container 10B will be explained.

[0133] Figure 9 This is a graph showing the relationship between the capacitance of electrode 4B in labeled container 10B and the water level WA.

[0134] Here, in the third embodiment, the labeled container 10B differs from the first embodiment in that the first electrode portion 412B is formed into an elongated rectangle along the vertical direction A, thus the capacitance relative to the water level WA of the water W is as follows: Figure 9 As shown, there is almost no change. Furthermore, a second electrode portion 413B is positioned near the bottom surface of the plastic bottle 2. Therefore, the capacitance of the water level WA near the bottom surface of the water W changes more significantly than a certain water level WA of the first electrode portion 412B. Therefore, the IC chip 5 measures the capacitance and the water level WA of the water W. Figure 9 The correlation shown is stored to detect the water level WA.

[0135] Thus, in this embodiment, the IC chip 5 can detect the water level at any location with high precision by detecting large changes in capacitance.

[0136] The third embodiment of the present invention has been described in detail above with reference to the accompanying drawings. However, the specific structure is not limited to this embodiment and includes design changes that do not depart from the spirit of the invention. Furthermore, the structural elements shown in the above embodiments and the variations shown below can be appropriately combined and configured.

[0137] (Modified Example)

[0138] The first electrode 41 and the second electrode 42 of the capacitance detection tag 1 described above can be mounted on the substrate 3 with the circumferential direction R facing in opposite directions.

[0139] In addition, such as Figure 10 As shown, regarding the capacitance detection tag 1 according to the above embodiment, the electrode 4A can be formed as a ring that electrically connects the first electrode 41 and the second electrode 42.

[0140] The tagged seal 100 of the tagged container 10 has an opening portion 43b at the lower end of the electrode 4A. The opening portion 43b is formed to be surrounded by a toothed hole 43a. If the opening portion 43b is opened, the electrode 4A is divided into a first electrode 41 and a second electrode 42. That is, the first electrode 41 and the second electrode 42 are formed to be in a non-electrically connected state.

[0141] Regarding electrode 4 in the first embodiment described above, the capacitance value in the initial state sometimes varies. If the capacitance value varies, it is difficult to determine whether it is the initial state. As in this modified example, when electrode 4A is annular, the capacitance value in the initial state is a fixed value, so it is easy to determine whether it is the initial state.

[0142] Furthermore, as in the second embodiment, when the IC chip 5 and antenna section 6 are located on the lower end side of the plastic bottle 2, the first electrode 41A and the second electrode 42A are formed into an electrically connected ring with respect to the cap 25 of the plastic bottle 2. In this configuration, instead of the aforementioned toothed hole 43, the cap 25 is removed from the plastic bottle body 20, thereby dividing the electrode 4A into the first electrode 41A and the second electrode 42A.

[0143] In addition, this embodiment illustrates the effect and function when the water level WA decreases, but it is not particularly limited and is also effective when the user adds water W to the plastic bottle 2, causing the water level to rise.

[0144] Furthermore, the second electrode portion 413 and the second electrode portion 423 according to the second embodiment may not be provided on the cap 25. For example, it is sufficient that at least one or more of the second electrode portion 413 and the second electrode portion 423 are provided in the detectable area F at the position closest to the cap 25. In addition, the second electrode portion 413 and the second electrode portion 423 can be provided in the substrate 3A in a way that makes it easy to disconnect their electrical connection by cutting them when the user removes the cap 25 of the plastic bottle 2.

[0145] Furthermore, the size and shape of the first and second electrodes involved in the above embodiments are not particularly limited. Additionally, the placement of the first and second electrodes is not particularly limited. For example, as... Figure 11As shown, for the tagged seal 100C of the tagged container 10C, the first electrode 41C and the second electrode 42C of the electrode 4C of the capacitive detection label 1C are disposed on a substrate 3C arranged in a manner that is wound around the circumference of the plastic bottle 2. The first electrode 41C and the second electrode 42C are formed in the circumferential direction R such that they pass through the center of the plastic bottle 2 in the vertical direction A. In this case, the IC chip 5 can appropriately measure the water level WA that reaches approximately less than or equal to half of the plastic bottle 2. Therefore, the user can easily determine the timing for replenishing water W to the receiving portion 22 of the plastic bottle 2.

[0146] (Fourth Implementation)

[0147] Next, refer to Figure 12 The fourth embodiment of the present invention will be described. In the following description, structures common to those already described will be labeled with the same reference numerals, and repeated descriptions will be omitted. Furthermore, any of the following embodiments differs from the first embodiment in that they are configured as a capacitance detection system utilizing a server and external instruments. Therefore, the following description will focus on the differences from the first embodiment.

[0148] [Capacitance Detection System 200]

[0149] Figure 12 This is a diagram showing the structure of the capacitance detection system 200 according to the fourth embodiment.

[0150] The capacitance detection system 200 according to the fourth embodiment includes the tagged container 10, server 300 and non-contact external instrument 400 according to the first embodiment.

[0151] [10 labeled containers]

[0152] The tagged container 10 utilizes the tagged container according to the first embodiment. The tagged container 10 includes a capacitance detection tag 1. The IC chip 5 of the capacitance detection tag 1 can transmit and receive information with an external instrument 400 via the antenna section 6.

[0153] [Server 300]

[0154] Server 300 is an information processing device capable of communication. Server 300 performs actions according to requests sent from external instruments 400. Server 300 includes a communication unit 301, a storage unit 302, and a control unit 303.

[0155] Communication unit 301 is a communication interface. Communication unit 301 communicates with external instrument 400 via network 900. Communication unit 301 is, for example, a device that communicates with a router connected to the Internet via a specified protocol such as a wired LAN.

[0156] The communications section 301 may be, for example, a device that can communicate with an access point connected to the Internet via a specified protocol such as a wireless LAN.

[0157] The storage unit 302 is configured using storage devices such as magnetic hard disk drives and semiconductor storage devices. The storage unit 302 stores program data of applications executing actions in the server 300. The storage unit 302 can also store data transmitted and received from other external devices via the communication unit 301.

[0158] The control unit 303 is configured using a processor such as a CPU. The control unit 303 functions by having the processor execute programs stored in the storage unit 302.

[0159] [External Instruments 400]

[0160] External instrument 400 is, for example, a communication terminal device that can be carried by a user. External instrument 400 includes, for example, smartphones, tablets, portable personal computers, wearable devices, etc. External instrument 400 can communicate with the tagged container 10 in a contactless manner. External instrument 400 includes an input unit 401, a display unit 402, a communication unit 403, an external antenna unit 404, a storage unit 405, and a control unit 406.

[0161] The input unit 401 is constructed using existing input devices such as keyboards, orientation devices (mice, tablets, etc.), buttons, and touch panels. The input unit is operated by the user when inputting user instructions into the portable terminal device. The input unit can serve as an interface for connecting the input device to external instruments 400.

[0162] Display unit 402 is an image display device such as a CRT (Cathode Ray Tube) display, a liquid crystal display, or an organic EL (ElectroLuminescence) display. Display unit 402 displays data above the screen. Display unit 402 can also serve as an interface for connecting the image display device to external instruments 400.

[0163] Communication unit 403 is a communication interface. Communication unit 403 communicates with server 300 via network 900. Communication unit 403 can be, for example, a device that wirelessly communicates with a base station installed in a mobile communication network using a specified protocol. Communication unit 403 can be, for example, a device that communicates with an access point connected to the Internet using a specified protocol such as a wireless LAN (Local Area Network).

[0164] The external antenna section 404 serves as a communication interface. For example, the external antenna section 404 can wirelessly communicate with the antenna section 6 of the capacitive sensing tag 1 in the tag container 10 via NFC (Near Field Communication).

[0165] The storage unit 405 is configured using a storage device such as a magnetic hard disk drive or a semiconductor storage device. For example, the storage unit 405 stores program data of an application executing actions in the external instrument 400. The storage unit 405 can also store other information.

[0166] The control unit 406 is configured using a processor such as a CPU (Central Processing Unit). The functions of the control unit 406 are realized by the processor executing the program stored in the storage unit 405.

[0167] Next, the function of the capacitance detection system 200 will be explained.

[0168] The capacitance detection system 200 described in this embodiment operates in both offline and online states. Here, offline refers to the state where the external instrument 400 is not communicating with the server 300 via the network 900. Online refers to the state where the external instrument 400 can communicate with the server 300 via the network 900.

[0169] The user operates the external instrument 400, which is pre-installed with a prescribed application. Within the application, information such as the relationship between the capacitor and the water level WA (W), specific identification information, detailed information related to the plastic bottle 2, and other information can be pre-registered through the user's operation.

[0170] [Offline Status]

[0171] First, the function of the capacitance detection system 200 in offline mode will be explained.

[0172] like Figure 13 As shown, the user holds the external instrument 400 and brings the external antenna 404 (external instrument 400) close to the antenna 6 of the capacitance detection tag 1. The IC chip 5 of the capacitance detection tag 1 is then powered via the antenna 6, measures the capacitance between the first electrode 41 and the second electrode 42, and transmits the information to the external instrument 400. Additionally, the IC chip 5 can transmit identification information for the plastic bottle 2 to the external instrument 400.

[0173] The external instrument 400 stores the acquired information in the storage unit 405.

[0174] Here, by storing information about the relationship between the capacitance measured by the IC chip 5 of the capacitance detection tag 1 and the water level WA of water W, the remaining water level in the plastic bottle 2 can be detected and this detection information can be sent to the external instrument 400. Furthermore, when the external instrument 400 stores information about the relationship between the capacitance and the water level WA of water W during application, the IC chip 5 sends the measured capacitance value to the external instrument 400. The external instrument 400 can then detect the remaining water level in the plastic bottle 2 based on the measured value and generate detection information.

[0175] Users can confirm the detection information via the application. Specifically, the control unit 406 can determine the state of the water W in the containment unit 22—whether it is full, half full, or low—based on the capacitance measured using the IC chip 5. Therefore, users can easily perform subsequent actions by adding water W or preparing the next plastic bottle 2.

[0176] Here, a specific display example of the external instrument 400 will be explained.

[0177] In this embodiment, such as Figure 13 As shown, if the external instrument 400 is brought close to the antenna section 6 of the capacitance detection tag 1, the identification information of the plastic bottle 2 is displayed, for example, in an application that provides the remaining water W in the container 10. The display section 402 of the external instrument 400 displays the model (type), ID, URL of product information, remaining water in the container 10, threshold, illustration 402a of the plastic bottle, etc.

[0178] In addition, it is sufficient to display an illustration 402a of the plastic bottle on the display unit 402, which allows for visual confirmation of the remaining amount.

[0179] If the remaining water W in container 10 is greater than or equal to the threshold, such as Figure 13 As shown, illustration 402a of the plastic bottle shows an illustration representing the state of being filled with water.

[0180] Additionally, if the remaining water W in container 10 is less than or equal to the threshold, such as Figure 14 As shown, illustration 402a of the plastic bottle depicts a state where water is present in trace amounts. This allows the user to instantly determine the remaining amount by visually confirming illustration 402a.

[0181] For example, when the container is semi-transparent or opaque, it is difficult to determine the remaining water level in container 10. In this case, the user can confirm the remaining water level by placing the external terminal 400 on container 10 and visually inspecting the illustration 402a displayed by the confirmation 402. Thus, even when the container is semi-transparent or opaque, the remaining water level in container 10 can be easily confirmed.

[0182] Furthermore, when the user places the external terminal 400 in the container 10, and the product is not in use, the display unit 402 can display information related to the use and storage of the product, as well as the product guide URL.

[0183] Additionally, when the user places the external terminal 400 into the container 10, after the product has been used, the system can display information about the next product and URLs for service vouchers.

[0184] Furthermore, when the user places the external terminal 400 in the container 10, the aforementioned URL can be automatically displayed on the display unit 402, or it can be displayed when the user accesses the URL.

[0185] Furthermore, the identification information for the plastic bottle 2 is sent to the external instrument 400 via the IC chip 5, thereby enabling the control unit 406 of the external instrument 400 to display the remaining amount of the tagged container 10 on the display unit 402. The user can easily perform subsequent actions by checking the display unit 402. Additionally, the user can further confirm detailed information related to the plastic bottle 2.

[0186] Furthermore, the external instrument 400 can send information input by the user via the input unit 401 to the IC chip 5. Thus, the IC chip 5 can add or update the acquired information. For example, the user can add identification information and send it to the IC chip 5. Additionally, the user can cause the external instrument 400 to periodically communicate with the capacitance detection tag 1, recording the time, location, and current status of the communication in relation to the IC chip 5. Therefore, the tagged container 10 allows the user to, to some extent, focus on timing the water W replenishment and preparing for the next action of the plastic bottle 2, through the external instrument 400.

[0187] [Online Status]

[0188] Next, the function of the online capacitance detection system 200 will be explained.

[0189] The user holds the external instrument 400 and brings the external antenna 404 close to the antenna 6 of the capacitance detection tag 1. The IC chip 5 of the capacitance detection tag 1 is then powered via the antenna 6, measures the capacitance between the first electrode 41 and the second electrode 42, and sends the measured capacitance value or detection information to the external instrument 400. Additionally, the IC chip 5 can also send identification information for the plastic bottle 2 to the external instrument 400.

[0190] The communication unit 403 of the online external instrument 400 sends the received information to the server 300 via the network 900, either manually or automatically.

[0191] If the control unit 303 of the server 300 receives capacitance measurement information or detection information and identification information via the communication unit 301, it stores this information in the storage unit 302 in association with other information. Specifically, the control unit 303 of the server 300 can detect the water level WA of the water W in the plastic bottle 2 based on the measurement information and generate detection information. Furthermore, the control unit 303 of the server 300 can, for example, generate capacitance detection information by summarizing, based on the received identification information, detailed information about the contents (water) contained in the plastic bottle 2 (e.g., place of origin), the time of receipt (information indicating the moment), the location of receipt (information indicating the location), and information about other plastic bottles associated with the identification information. The control unit 303 can send the detection information or capacitance detection information to an external instrument 400. Additionally, the capacitance detection information may include detection information.

[0192] Users can access server 300 via network 900 using an external instrument 400 to obtain test information or capacitance test information from the application. Furthermore, the test information or capacitance test information can be automatically sent to the external instrument 400 via email if an email address has been pre-registered in the application. Alternatively, the test information or capacitance test information can be automatically sent via push notifications from the application targeting the external instrument 400. Users can confirm the test information or capacitance test information via display unit 402.

[0193] Thus, with respect to the capacitance detection system 200 of this embodiment, users can easily confirm the remaining water W using an external instrument 400, both online and offline. Furthermore, with respect to the capacitance detection system 200 of this embodiment, users can obtain new information, making it easier to take subsequent actions and promote sales.

[0194] The fourth embodiment of the present invention has been described in detail above with reference to the accompanying drawings. However, the specific structure is not limited to this embodiment and includes design changes that do not depart from the spirit of the invention. Furthermore, the structural elements shown in the above embodiments and the variations shown below can be appropriately combined and configured.

[0195] (Modified Example)

[0196] For example, in the above embodiments, a plastic bottle is cited as an example of a container used in labeled containers, but this is not particularly limited. Containers can be bottles, tubes, stand-up pouches, boxes, glass products, paper packages, etc. Furthermore, the cross-sectional shape of the container and its opening is not particularly limited; it can be circular, triangular, rectangular, or any other shape. Also, the size of the container is not particularly limited. Additionally, the sealing part is not limited to a cap; any component that seals the opening is acceptable.

[0197] For example, in the above embodiment, liquid water is used as the contents contained in the plastic bottle, but the contents may not be liquid. For example, it may be a solid substance such as yogurt or jelly.

[0198] If the capacitance detection tag involved in the above embodiment is in a frequency band capable of wireless communication, it may not be in the UHF band, but in the HF band, microwave band (around 2.45GHz), or LF band (less than or equal to 135kHz).

[0199] In addition, the capacitance detection tag described in this embodiment can also be further equipped with protective molds, various resistors, capacitors, rectifiers, surge arresters, power supplies, power generation components, display units, and modular electronic circuits.

[0200] In addition, the electrodes of the capacitance detection tag involved in the above embodiment have two electrodes, namely a first electrode and a second electrode, but it is not particularly limited and may have more than or equal to three electrodes.

[0201] Regardless of any of the above-described methods, the capacitance detection tag and the tagged container according to the present invention can provide a capacitance detection tag that is easy to install in a container and detects the capacity of the contents inside the container, as well as a tagged container with a capacitance detection tag.

[0202] Industrial applicability

[0203] According to the present invention, a capacitance detection tag and a tagged container are provided that can be easily installed in a container and detect the capacity of the contents inside the container, and a tagged container with a capacitance detection tag is provided, and therefore can be used in industry.

[0204] Explanation of the label

[0205] 10, 10A, 10B Labeled Containers

[0206] 2. Plastic bottles (containers)

[0207] 20. Plastic bottle body (container body)

[0208] 21. Body Part

[0209] 21a Outer surface (outer facet)

[0210] 22 Containment Department

[0211] 23 Note: Export Department

[0212] 24. Opening

[0213] 25. Cap (Sealing Part)

[0214] 100, 100A with label seal

[0215] 1. Capacitor testing labels for 1A and 1B

[0216] 3. 3A substrate

[0217] 3f, 3Af surfaces

[0218] 4. Electrodes 4A and 4B

[0219] 41, 41A, 41B First Electrodes

[0220] 410 First Water Level Monitoring Department

[0221] 412, 412B First Electrode Section

[0222] 413, 413B Second Electrode Section

[0223] 42 Second Electrode

[0224] 420 Second Water Level Detection Department

[0225] 422, 422B First Electrode Section

[0226] 423, 423B Second Electrode Section

[0227] 5 IC chips

[0228] 6. Antenna Section

[0229] 200 Capacitor Detection System

[0230] 300 server

[0231] 400 external instruments

[0232] 900 Network

[0233] W water(content)

[0234] WA water level (height of the upper surface)

[0235] F Detectable area

Claims

1. A capacitance detection tag, which is provided in a container having a receiving portion for receiving contents whose upper surface is displaced in a height direction, wherein: The capacitance detection tag has: An electrode comprising a first electrode and a second electrode disposed at a position not overlapping with the first electrode; an antenna unit capable of contactless communication with an external device; as well as an IC chip which is electrically connected to the electrode and the antenna portion and measures the capacitance formed between the first electrode and the second electrode, The IC chip performs contactless communication with the external device via the antenna unit, and transmits the capacitance measured by the IC chip to the external device.

2. The capacitance detection tag according to claim 1, wherein: The first electrode and the second electrode extend along the height direction.

3. The capacitance detection tag according to claim 1, wherein: The capacitance detection label is adhered to the outer surface of the container.

4. The capacitance detection tag according to claim 1, wherein: The capacitance detection tag is formed integrally with the container.

5. The capacitance detection tag according to claim 1 or 2, wherein: The first electrodes and the second electrodes are arranged at substantially uniform intervals in the height direction.

6. The capacitance detection tag according to claim 1 or 2, wherein: The first electrode and the second electrode are substantially the same size and shape.

7. The capacitance detection tag according to claim 1 or 2, wherein: The first electrode and the second electrode have different shapes.

8. The capacitance detection tag according to claim 1 or 2, wherein: The first electrode or the second electrode comprises: a first electrode portion; and a second electrode portion, the contact area between the second electrode portion and the container being larger than the contact area between the first electrode portion and the container. The first electrode portions and the second electrode portions are alternately disposed along the height direction.

9. The capacitance detection tag according to claim 8, wherein: The first electrode and the second electrode each have the second electrode portion, The second electrode portion of the first electrode and the second electrode portion of the second electrode have different sizes.

10. The capacitance detection tag according to claim 8, wherein: The second electrode portion is provided below the center of the container in the height direction.

11. The capacitance detection tag according to claim 1 or 2, wherein: The first electrode and the second electrode are provided along the circumferential direction of the container and face each other with the accommodation portion interposed therebetween.

12. A labeled container, wherein: The labeled container has: The capacitance detection tag according to claim 1 or 2; and The container.

13. The labeled container according to claim 12, wherein: At least a portion of the first electrode and the second electrode is disposed in a detectable region that faces the housing region where the upper surface is displaced, with the container interposed therebetween.

14. The labeled container according to claim 12, wherein: The container comprises: a container body having an opening portion that allows the contents to enter and exit the storage portion; and a sealing portion that can be removed from the container body and opens and closes the opening portion. The first electrode or the second electrode comprises: a first electrode portion; and a plurality of second electrode portions, the contact area between the second electrode portions and the container being larger than the contact area between the first electrode portion and the container. The first electrode portions and the second electrode portions are alternately arranged along the height direction, At least one of the second electrode portions is provided in the sealing portion.

Images