CN114795666A

CN114795666A - Inductor and related device for realizing fixation and electric connection based on autonomous elasticity

Info

Publication number: CN114795666A
Application number: CN202210722658.8A
Authority: CN
Inventors: 黄新凯; 徐菲; 陈阵
Original assignee: Shenzhen Generation Technology Co ltd
Current assignee: Shenzhen Generation Technology Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-07-29
Also published as: CN219302338U

Abstract

The invention provides a sensor capable of realizing fixation and electric connection based on autonomous elasticity, which is used for being inserted into a built-in pocket of an absorption article and can be fixed with the built-in pocket and be electrically connected with a sensing wire in the built-in pocket based on the autonomous elasticity. The invention also provides a device for monitoring the moisture state of the intelligent absorption article, which comprises the intelligent absorption article and the sensor, wherein the intelligent absorption article comprises the disposable absorption article, and the sensing wire and the built-in pocket which are arranged on the absorption article, and the sensor is suitable to be inserted into the built-in pocket to be electrically connected with the sensing wire and to monitor the moisture state.

Description

Inductor and related device for realizing fixation and electric connection based on autonomous elasticity

Technical Field

The present invention relates to a sensor, and more particularly, to a sensor and a moisture monitoring system device adapted to be inserted into a pocket of an absorbent article, fixed to the pocket by an autonomous elastic force, and connected to a sensing wire inside the pocket.

Background

Disposable absorbing articles comprise sanitary products such as paper diapers, sanitary napkins, urine pads and the like, which are disposable nursing articles, and need to be replaced according to needs when in use, and if the replacement is too early/frequent, nursing workload is increased and waste is caused; if the user changes the dressing too late, leakage is likely to occur, and the skin is likely to be affected by long-term irritation of the skin by the excrement. Therefore, people expect an intelligent product which can detect the moisture in real time and prompt replacement at a proper time, and the intelligent product has positive significance for reasonable use of the disposable absorbent article.

In the prior art, chinese patent publication No. CN113425508A discloses an intelligent absorbent article including sensing lines and a built-in pocket, wherein at least two sensing lines are disposed on a diaper to sense moisture, a built-in pocket is disposed on the diaper to accommodate a sensor for performing moisture detection, at least a portion of the sensing lines are disposed in the pocket and exposed, the sensor includes at least two conductive contacts, and the sensor contacts are in contact with and connected to the sensing lines in the built-in pocket of the diaper to realize the moisture detection function of the diaper.

In order to effectively fix the sensor and ensure that the contact between the sensor contact and the induction line of the built-in pocket is more reliable, the built-in pocket is arranged under the front belly patch of the paper diaper in the prior art, and the sensor is fixed by utilizing the elasticity generated on the front belly patch when the paper diaper is worn, so that the reliability of the electric connection between the sensor and the paper diaper is improved. In addition, some prior arts have a built-in pocket disposed on the elastic waist of the diaper, so that the sensor can be fixed by the elastic force generated on the elastic waist when the diaper is worn, and the contact and the electrical connection between the sensor and the diaper are more reliable.

However, for some absorbent articles without a front abdominal patch or an elastic waistline (such as a diaper), or when the built-in pocket is arranged at a place other than the front abdominal patch or the elastic waistline of the diaper, the prior art can only fix the sensor by means of the elasticity of the pocket, and the fixing mode is unreliable, and when the pocket is not in proper size or the pocket is enlarged, the sensor in the pocket becomes loose, and poor contact between the sensor contact and the sensing line of the diaper can be caused.

The above-mentioned deficiencies need to be solved by a new sensor solution that allows the sensor to be effectively secured to the pocket and to make elastic contact and reliable electrical connection with the sensing wires in the pocket even when inserted into a built-in pocket that is not supported by the front abdominal patch and elastic waist band.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a sensor which can generate elasticity autonomously and can implement fixation and electric connection in a self-adaptive manner, and no matter where the built-in pocket is arranged in the absorbing article, the sensor can be effectively fixed in the built-in pocket, and the sensor contact and the sensing wire in the pocket can realize elastic contact and reliable electric connection.

In order to solve the above technical problems, in one aspect, the present invention provides a sensor suitable for being inserted into a built-in pocket of an absorbent article and being fixed to the built-in pocket based on an autonomous elastic force and electrically connected to a sensing wire in the built-in pocket, the sensor comprising a main body device and at least one elastic movable surface, the main body device comprising a flat streamline appearance and including a first flat surface and a second flat surface, the first flat surface including at least two slightly raised conductive contacts, the main body device further comprising a detection device for detecting a wet state of the absorbent article through the sensing wire, at least a portion of the elastic movable surface being located outside the main body device and forming an outer contour of the sensor together with the main body device, and an equivalent circumference of a cross section of the outer contour varying with a state of the elastic movable surface, the sensor comprising:

when the sensor is inserted into the built-in pocket, the elastic movable surface can touch the inner wall of the built-in pocket and exert acting force on the inner wall;

when external force exceeding a set threshold value acts or is locked, the elastic movable surface can enter a limit compression state, and the equivalent circumference of any cross section of the inductor at the position of the elastic movable surface is smaller than the circumference of the cross section of the built-in pocket in the state, so that the inductor can be smoothly inserted into the built-in pocket;

when the inductor is inserted into the built-in pocket and has no external force and is unlocked, the elastic movable surface enters an elastic balance state, the equivalent circumference of at least one cross section of the inductor at the position of the elastic movable surface is equal to the circumference of the cross section of the built-in pocket in the state, the elastic force of the elastic movable surface can effectively act on the inner wall of the built-in pocket, the built-in pocket can generate reaction force or tension force to effectively wrap and fix the inductor, and the induction line is tightly attached to the conductive contact to realize elastic contact and reliable electric connection.

The sensor at least comprises an elastic movable surface on one side, and when the working state of the elastic movable surface changes, the width of the sensor can be changed, and the equivalent perimeter of the cross section of the sensor can be further changed; when the elastic movable surface is in a free extension state, the width of the inductor is the maximum value; when the elastic movable surface is in a limit pressed state, the width of the inductor is the minimum value; when the elastic movable surface is in an elastic balance state, the width of the inductor is between the maximum value and the minimum value.

Wherein:

comprises an arch-shaped wire spring, wherein the arch-shaped wire spring comprises a convex part at any side or two sides of a main body device and forms an elastic movable surface; or

The O-shaped wire spring comprises convex parts at two sides of a main body device and forms an elastic movable surface; or

The C-shaped wire spring comprises convex parts at two sides of a main body device and forms an elastic movable surface; or

The device comprises a coil spring, wherein one end of the coil spring is fixed on a main body device, and the other end of the coil spring is fixed on an elastic movable surface; or

The device comprises a coil spring, wherein two ends of the coil spring are respectively fixed on elastic movable surfaces on the left side and the right side of a main body device; or

The elastic locking control device is positioned on any side or two sides of the main body device, one end of the elastic locking control device is fixed on the main body device, and the other end of the elastic locking control device is fixed on the elastic movable surface and provides elasticity for the elastic movable surface or locks the elastic movable surface.

When the state of the elastic movable surface changes, the distance between the elastic movable surface and the main body device changes, so that the thickness of the inductor changes, and the equivalent perimeter of the cross section of the inductor changes; the thickness is at a maximum when the elastic movable surface is in a freely stretched state, at a minimum when the elastic movable surface is in a limit compressed state, and between the maximum and minimum when the elastic movable surface is in an elastic equilibrium state.

Wherein:

the device comprises a C-shaped sheet spring, wherein one end of the C-shaped sheet spring is fixed on a main body device, and the other end of the C-shaped sheet spring is fixed on an elastic movable surface and provides elasticity for the elastic movable surface; or

Comprises a C-shaped sheet spring, one end of which is fixed on a main body device, and the other end of which forms an elastic movable surface; or

Comprises an arched sheet spring, one end of which is fixed on a main body device, and the other end of which is suspended or can slide; or

The coil spring is fixed on the main body device at one end, and the other end is fixed on the elastic movable surface and provides elasticity for the elastic movable surface; or

The elastic locking control device is fixed on the main body device at one end, and the other end is fixed on the elastic movable surface and provides elasticity for the elastic movable surface or locks the elastic movable surface.

The main body device also comprises a wireless transmitting device which is used for transmitting the state information of the absorbing article detected by the detecting device to the outside.

The sensor comprises a hanging ornament, wherein when the sensor is inserted into the built-in pocket, the hanging ornament is left outside the built-in pocket and can be used as a mark for inserting the sensor, so that a user is reminded of taking care of the sensor, and the user can take the sensor out of the built-in pocket conveniently.

On the other hand, the invention also provides a system device for monitoring the moisture state of the intelligent absorption article, which comprises the intelligent absorption article and a sensor, wherein the intelligent absorption article comprises the disposable absorption article, a sensing wire and a built-in pocket, the sensing wire and the built-in pocket are arranged on the disposable absorption article, and the sensor is suitable for being inserted into the built-in pocket for use, is electrically connected with the sensing wire and detects the moisture state.

When the sensor is inserted into the built-in pocket, the elastic force generated by the elastic movable surface can enable the conductive contacts to cling to the sensing lines to realize elastic contact and electric connection, and the moisture state detection function of the disposable absorption article can be realized through the sensing lines.

The device comprises a wireless receiving device, and the sensor comprises a wireless transmitting device and is used for realizing the wireless moisture state monitoring and state display functions of the disposable absorption article.

The invention has the advantages that the sensor can automatically generate elasticity and automatically adapt to the change of the space of the pocket, and can automatically offset the influence caused by the change of the space of the pocket within the working range, the sensor can be effectively fixed in the built-in pocket no matter where the built-in pocket is arranged in the absorbing article, and the contact of the sensor and the induction wire of the paper diaper can be kept in elastic contact and reliably electrically connected.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an appearance structure of a sensor according to an embodiment of the present invention when used in combination with a pants-type intelligent absorbent article including a sensing line and a built-in pocket.

Fig. 2 and fig. 3 are schematic diagrams of a three-dimensional structure and a cross-sectional schematic diagram/equivalent circuit diagram of an induction film of an intelligent absorbent article used with the inductor according to the embodiment of the present invention.

Fig. 4 and 5 are a schematic sectional structure view a-a 'and a schematic sectional structure view B-B' of fig. 1 according to an embodiment of the invention.

Fig. 6A and 6B are an enlarged schematic structural view and a cross-sectional equivalent circumference view of the inductor at the section a-a' shown in fig. 4, respectively.

Fig. 7A and 7B are schematic side views of the sensor including the C-shaped leaf spring according to the embodiment of the present invention when the elastic movable surface is opened and closed.

Fig. 8A and 8B are schematic side structures of the sensor including the integrated elastic movable surface according to the embodiment of the present invention when the movable surface is opened and closed, respectively.

Fig. 9 is a schematic side view of a sensor including an integrated resilient active surface formed by arched leaf springs according to an embodiment of the present invention.

Fig. 10A and 10B are schematic front structural diagrams and schematic cross-sectional structural diagrams C-C' of the sensor according to the embodiment of the invention, in which two sides of the sensor include the elastic movable surface and the locking device.

Fig. 11 is a schematic front view of the sensor according to the embodiment of the present invention, wherein both sides of the sensor include an elastic movable surface formed by arched wire springs.

Fig. 12 is a schematic front view of an inductor according to an embodiment of the present invention, wherein two sides of the inductor include an elastic movable surface formed by C-shaped wire springs.

Fig. 13A, 13B and 13C are schematic front, right and bottom views of an inductor according to an embodiment of the present invention, wherein the inductor includes elastic movable surfaces formed by O-shaped wire springs on two sides thereof.

Fig. 14 is a schematic structural diagram of an appearance of the sensor according to the embodiment of the present invention when used in combination with a diaper-type smart absorbent article including a sensing wire and a built-in pocket.

Fig. 15 is a schematic diagram of a pattern design of a sensing film having four sensing lines for use with the sensor according to the embodiment of the invention.

Fig. 16 is a schematic diagram of a pattern design of a sensing film having four improved sensing lines for use with a sensor according to an embodiment of the present invention.

Fig. 17 is a schematic diagram of a pattern design of a sensing film having six sensing lines for use with a sensor according to an embodiment of the invention.

Fig. 18 is a functional block diagram of a system for monitoring the moisture status of an intelligent absorbent article according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced. The terms of direction and position of the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the present invention.

Fig. 1 is a schematic view of an appearance structure of a sensor according to an embodiment of the present invention when used in combination with a pants-type intelligent absorbent article including a sensing line and a built-in pocket. The sensor of the embodiment of the invention is suitable for being matched with almost all absorption articles (including disposable and multi-use absorption articles), and the sensor can be placed in a pocket of the absorption article. For simplicity, embodiments of the present invention will be described primarily with reference to disposable absorbent articles.

Disposable absorbent articles include products such as diapers, sanitary napkins, and diapers, and the diapers can be divided into conventional diapers with Closure systems (e.g., left and right tape, hook and loop fasteners), and diapers without Closure systems (Insert Pads, sharp Pads) and pant diapers (Pull-ups/training Pants, Pants). For simplicity, the embodiments of the present invention are described in the context of diapers without a closure system, and the description is applicable to other types of disposable absorbent articles as well. Since diapers are most representative of disposable absorbent articles, diapers (diapers) discussed in the present examples have the same meaning as disposable absorbent articles in most cases, Smart absorbent articles according to the present examples may also be referred to as Smart diapers (Smart diapers).

In this embodiment, the diaper 13 is a pants-type diaper without a closed system, and includes an elastic waist 27, a bottom film (leak-proof layer), an absorbing layer (interlayer), a surface layer (dry layer), an outer nonwoven fabric (bottom film composite layer), and the like. The carrier film typically comprises a breathable or non-breathable polyethylene film (PE), the absorbent layer typically comprises polymeric absorbent material (SAP) and wood pulp, the facing layer typically comprises soft and comfortable hydrophilic nonwoven, and the outer layer of nonwoven is typically combined with the carrier film to form a composite carrier film, which provides the carrier film with a better feel and increased strength, and thus the outer layer of nonwoven can also be considered part of the carrier film.

In order to realize intelligent urine wetting/moisture detection, the diaper of the embodiment of the present invention includes a sensing film 40, one side of the sensing film includes at least two detection electrodes/urine wetting sensing lines (referred to as sensing lines), and the sensing film 40 includes a first sensing line 21 and a second sensing line 22. The sensing line usually starts from a position close to the front end edge of the diaper, crosses over the diaper absorbing layer 12 and is close to the rear end edge of the diaper, so that the moisture state detection function for the whole diaper absorbing layer can be realized.

In order to fix the sensor 30 for implementing the moisture detection, a built-in pocket 26 is further included below the front surface of the diaper 13, and the sensor 30 can be inserted into the pocket 26 through the opening 23 of the pocket for use. At least a portion of the

sensing lines

21, 22 are exposed within the pocket, such that the

conductive contacts

31, 32, 33, 34 on the sensor can be in face-to-face contact with and electrically connected to the

sensing lines

21, 22 within the pocket.

Contacts

31, 33 are shown in contact with the sense line 21, while

contacts

32, 34 are shown in contact with the sense line 22. The sensor is generally in a strip streamline shape and is inserted into the built-in pocket from the length direction for use, and two ends in the length direction are called two ends and two sides in the width direction are called two sides in the embodiment of the invention.

The sensor film 40 is typically arranged between the absorbent layer and the carrier film of the pant diaper, and the opening 23 of the inner pocket is arranged in the carrier film (including the outer nonwoven), through which opening 23 the inner pocket is accessible. The sensing film and the base film on the periphery of the built-in pocket 26 are adhered to each other to form a boundary of the built-in pocket 26. In order to illustrate the relationship between the sensing film and the sensing line and the surface layer, the absorption layer, the bottom film and the outer layer of the diaper according to the embodiment of the present invention, the cross-sectional structures a-a 'and B-B' of the embodiment shown in fig. 1 will be further described in some drawings below.

Fig. 2 and fig. 3 are schematic diagrams of a three-dimensional structure and a cross-sectional schematic diagram/equivalent circuit diagram of an induction film of an intelligent absorbent article used with the inductor according to the embodiment of the present invention. The sensing film 40 includes a plastic film substrate 45 and first and

second sensing lines

21 and 22 disposed on one side of the substrate. In the embodiment of the present invention, the side of the sensing film 40 where the sensing lines are disposed is referred to as a contact surface 61, which can be used for contacting with the conductive contacts of the sensor and performing electrical connection, and the other side of the sensing film 40 is a sensing surface 62, when the sensing film is disposed in the diaper, the sensing surface 62 faces the absorption layer, the

sensing lines

21 and 22 can detect the moisture 16 accumulated on the sensing surface 62 by a non-contact manner of capacitive sensing/capacitive coupling, and the electrolytic capacitance value C1 generated between the

sensing lines

21 and 22 is proportional to the area of the sensing surface 62 wetted by the moisture, proportional to the dielectric constant of the plastic film substrate 45, and inversely proportional to the thickness of the plastic film substrate 45.

Since the electrolytic capacitance value C1 in the embodiment of the present invention is proportional to the area of the moisture/urine-wetting sensing surface 62, the capacitance C1 can be used to calculate/estimate the amount of urine absorbed by the absorbent layer of the diaper. Since the area of the moisture-sensitive surface 62 is also related to the moisture absorption and locking ability of the absorbent layer of the diaper, comprehensive calculation is required according to the specific parameters of the diaper. For the sake of simplicity, in practical application, the urine volume value can be directly obtained by a more convenient table look-up method, specifically, a series of data of the corresponding relationship between the urine volume and the capacitance value is obtained through experiments (tests can be performed by using normal saline or artificial urine), then the data is made into a table, and finally, the detected capacitance value is compared with the capacitance value on the table in the process of using the diaper, so that the urine volume corresponding to the capacitance value can be known.

It should be noted that, because the response membrane sets up in the panty-shape diapers the inside, in order to prevent that the moisture in the panty-shape diapers absorbed layer will respond to the line short circuit in the edge of response membrane, the response membrane all can remain the blank area that the round does not have the response line usually all around, just so can guarantee that the response line can not be moistened by the urine of response membrane edge and short circuit.

Fig. 4 and 5 are a schematic sectional structure view a-a 'and a schematic sectional structure view B-B' of fig. 1 according to an embodiment of the invention. In the figure, 11 is a surface layer of a diaper, 12 is an absorption layer of the diaper, 15 is a bottom film of the diaper, 14 is an outer layer nonwoven fabric of the diaper, and in an actual product, each layer of the diaper is bonded together through an adhesive (a structural adhesive, such as a hot melt adhesive) 28. The diaper of the present embodiment includes a sensing film 40, which includes a plastic film substrate 45 and first and

second sensing lines

21 and 22 disposed on one side of the substrate. The sensing film 40 is positioned between the bottom film 15 and the absorption layer 12 of the paper diaper, and one surface of the plastic film substrate 45, which comprises the sensing lines, is a contact surface 61, faces the bottom film 15 and can be used for being in face-to-face contact with the contacts of the sensor; the other side of the plastic film substrate 45 is a sensing surface 62 which faces the absorbent layer 12 and can capacitively/non-contact detect moisture 16 accumulating on the sensing surface 62.

The inner pocket 26 is located between the carrier film 15 and the contact surface 61 of the sensor film and can be produced by a glue-spraying process during the production of the diaper, for example, without spraying glue in the area of the inner pocket 26, so that a region which can be separated from each other and which forms the inner pocket 26 is produced, and the adhesive 28 around the inner pocket forms the adhesive boundary of the inner pocket.

The sensor 30 inserted into the pocket 26 includes a main body device 36 and a flexible active surface 37. On one of the faces of the body means there are included a first contact 31 and a second contact 32, which are electrically connected to detection means arranged inside the sensor. The side of the inductor on which the conductive contacts are provided faces the contact surface 61, the contact surface 61 forms an inner wall of the built-in pocket 26, and the

inductor contacts

31 and 32 are in face-to-face contact with and electrically connected to the first and second induction lines 21 and 22 on the contact surface, respectively.

The bottom film 15 forms another inner wall of the built-in pocket 26, the elastic movable surface 37 is arranged above the other surface of the main body device 36 opposite to the

conductive contacts

31 and 32, the elastic movable surface 37 has elasticity under the support of the elastic device 38, the elasticity generated by the elastic surface acts on the bottom film 15, the built-in pocket 26 generates reaction force/tension to wrap and fix the inductor 30, meanwhile, the

contacts

31 and 32 are forced to cling to the induction lines 21 and 22, and the contact between the contacts has elasticity, so that the electrical connection is more reliable and the occurrence of poor contact is avoided.

Since no pocket is present in the section B-B', the plastic film substrate 45 is directly bonded to the carrier film 15 by the adhesive 28 and seals the

sensing lines

21, 22, thereby more effectively preventing moisture 16 in the absorbent layer 12 from penetrating into the contact surface 61 and shorting the sensing lines.

Fig. 6A and 6B are respectively an enlarged structural schematic view of the inductor of the section a-a' shown in fig. 4 and a cross-sectional equivalent circumference schematic view thereof, and a cross section perpendicular to the insertion direction of the inductor, i.e., a cross section in the width direction of the inductor, will be referred to as a cross section in the embodiment of the present invention. The inductor 30 comprises a body means 36, a resilient movable surface 37 and a resilient means (e.g. a spring) 38. The main body unit 36 is typically a closed box, usually made of plastic, and generally has a flat, streamlined design for easy insertion into the inner pocket of the diaper for use.

The main body device 36 includes a moisture detection device (or simply a detection device) 54 therein, which is electrically connected to the first and second

conductive contacts

31, 32 for receiving an input signal. The upper and lower surfaces of the body means 36 are relatively flat (less arcuate) and are referred to herein as flat surfaces, one of which faces the user and the other of which faces away from the user when the sensor is inserted into the pouch of a diaper for use. For the sake of convenience of distinction, the surface provided with the conductive contacts and used for contacting the sensing lines is referred to as a first flat surface 301, and the other surface is referred to as a second flat surface 302. The curvature of the left and right sides (both sides, including the left side 303 and the right side 304) of the body device 36 is large and sometimes thin, and thus may be referred to as the two thin sides of the inductor. Embodiments of the present invention refer to this topographical feature of the body device as a flat, streamlined design.

The elastic movable surface 37 of the present embodiment is disposed above the second flat surface 302 of the main body device 36, when the elastic force F1 generated by the elastic movable surface 37 acts on the inner wall (e.g. the bottom film 15) of the built-in pocket 26, the built-in pocket can generate a reaction force F2, which is further transmitted to the

contacts

31, 32 through the elastic movable surface 37, the spring 38 and the main body device 36, and then acts on the

sensing wires

21, 22 of the other inner wall (e.g. the contact surface 61) of the built-in pocket 26, at this time, the built-in pocket 26 can not only wrap and fix the sensor 30, but also provide an elastic force for the contact between the sensor contacts and the sensing wires of the diaper, so as to achieve a more reliable electrical connection therebetween.

Before the sensor is inserted into the pocket, the elastic movable surface 37 is in a freely extending state, at this time, the height of the movable surface is the highest, the thickness of the sensor is the largest, and the equivalent circumference of the cross section of the outer contour of the sensor including the elastic movable surface at the position of the elastic movable surface is larger than the circumference of the cross section of the pocket, that is, the sensor of the embodiment cannot be directly inserted into the pocket. To insert the sensor 30 into the pocket 26, an external force/pressure is typically applied to the flexible movable surface 37 of the sensor, such as by pinching the sensor with a hand, wherein the spring 38 of the sensor is compressed to cause the flexible movable surface 37 to abut the body 36, and wherein the thickness of the sensor is minimized.

When the sensor 30 is inserted into the built-in pocket and the hand is released (the external force disappears), the elastic movable surface 37 is stretched/lifted and acts on the inner wall of the built-in pocket 26. Because the built-in pocket of the paper diaper is made of soft materials such as non-woven fabrics, PE films and the like and has great flexibility, the reaction force generated by the built-in pocket can be reflected and transmitted in a tension mode, so that the built-in pocket is tightened, the inner wall of the built-in pocket is tightly attached to the outer wall of the inductor, the outer contour of the inductor is drawn, and the elastic movable surface 37 enters an elastic balance state.

In the equilibrium state of the spring force, the contour line 24 in the figure represents both the outer contour of the sensor and the inner contour of the built-in pocket, since the two are identical. The contour between the two convex portions of the inductor is shown as a tangent, in which case the length of the contour 24 may represent both the equivalent cross-sectional perimeter of the inductor and the cross-sectional perimeter of the pocket, since they are equal.

To facilitate insertion and removal of the sensor, a locking device 39 may be provided on the sensor which locks or releases the resilient movable surface 37. When in the locked state, the elastic device 38 can be limited to act, so that the elastic movable surface 37 enters the limit compression state with the thinnest thickness; when in the release state/non-locking state, the restriction of the elastic device 38 is removed, and the elastic movable surface 37 is restored to the elastic state. The combination of the resilient means 38 and the locking means 39 is referred to as a resilient locking control means in the embodiments of the invention.

Fig. 7A and 7B are schematic side views of the sensor including the C-shaped leaf spring according to the embodiment of the present invention when the elastic movable surface is opened and closed. Unlike the previous embodiments, this embodiment employs a C-shaped leaf spring 38, one end 67 of which is fixed to the main body 36 and the other end of which is fixed to and provides resiliency to the resiliently movable surface 37. In practical applications, the size and shape of the elastic movable surface 37 can be designed in many different ways as long as it can make the overall shape/volume/thickness/width of the inductor smaller and elastic under the action of external force and can stretch/expand/recover to the original shape after the external force disappears.

The body device of the embodiment of the present invention is generally of an elongated design, and the length direction thereof is generally the insertion direction. The ends 305 and 306 of the inductor in the longitudinal direction are shown, and the insertion end 305 is shown. The resilience of the movable surface 37 of this embodiment is provided by a C-shaped leaf spring 38, in which the resilient movable surface 37 is open in an initial state, in which it is in a freely stretched state, the thickness of the sensor is at its maximum, and the equivalent circumference of the cross-section of the sensor at the highest point of the resilient movable surface 37 is at its maximum.

In order to better accommodate the elastic movable surface 37, the main body device 36 further includes a groove 68, under the action of the external force F, the elastic movable surface 37 will cling to the groove 68 and enter a limit compression state, at this time, the sensor is thinnest, the equivalent circumference of the cross section of the sensor is shortest, and the sensor can be conveniently inserted into the built-in pocket. After the sensor 30 is inserted into the pocket and the external force is removed/the latch is released, the resilient movable surface 37 enters a state of resilient equilibrium, in which the sensor is secured within the pocket and its conductive contacts are in resilient contact with the sensing wires within the pocket.

The housing of the elastic movable surface 37 and the main body 36 of this embodiment is preferably made of plastic material, such as ABS, PC, etc., and the C-shaped leaf springs 38 are preferably made of elastic metal sheet, such as copper phosphor sheet, manganese steel sheet, stainless steel sheet, etc.

Fig. 8A and 8B are schematic side structures of the sensor including the integrated elastic movable surface according to the embodiment of the present invention when the movable surface is opened and closed, respectively. The main difference between the embodiment shown in the present embodiment and the embodiments shown in fig. 7A and 7B is that the present embodiment combines the elastic device 38 and the elastic movable surface 37 into a whole and forms an integrated elastic movable surface 43, i.e. the C-shaped spring plays the roles of both the elastic device 38 and the elastic movable surface 37, and the operation principle is the same as that of the embodiments shown in fig. 7A and 7B. It should be noted that one end of the integrated elastic movable surface 43 is formed into the elastic movable surface 37 by hanging/tilting, and the other end is fixed on the main body device 36 by the barb 69 as an elastic supporting point.

The elastic device/spring 38 of the embodiment of the present invention may be made of a metal sheet (e.g., a steel sheet, a copper sheet, or an alloy sheet), or a plastic (e.g., nylon, PC, etc.), or an elastic material such as rubber, silica gel, or an elastomer may be covered on the metal spring 41 to form an integrated elastic movable surface 43, so that the metal sheet 41 not only can be effectively protected, but also the elastic movable surface has a texture and a hand feeling that are preferred by a user.

Fig. 9 is a schematic side view of a sensor including an integrated resilient active surface formed by arched leaf springs according to an embodiment of the present invention. In practical applications, the integrated elastic movable surface (also referred to as elastic movable surface or movable surface for short) 43 may have various different designs as long as it can provide a movable elastic surface. The elastic movable surface 43 of the present embodiment is an arched thin-plate spring, which can simultaneously play the roles of the elastic movable surface 37 and the elastic device 38, and one end (right end 47) thereof is fixed on the main body device 36, while the other end (left end 46) thereof is movable, when the top of the elastic movable surface 43 is pressed, the movable end 46 thereof extends outward (leftward in the figure), and the height of the elastic movable surface 43 is lowered, so that the sensor 30 becomes thin as a whole and is easily inserted into the built-in pocket (extreme pressed state); when the pressure is removed, the elastic movable surface 43 returns to its highest initial state (freely stretched state). The elastic active surface 43 of the present embodiment can also be formed by covering the metal elastic sheet with an elastic material.

The present embodiment is different from the previous embodiments in that the sensor of the present embodiment can be inserted into the built-in pocket without pressing down or locking the elastic movable surface 43 in advance, because the elastic movable surface of the present embodiment is designed to have low ends and high middle, and the equivalent perimeter of the cross section of the sensor at the starting end 46 is smaller than the perimeter of the cross section of the built-in pocket, so the sensor 46 can be inserted with the left head first, and because the elastic movable surface 43 is a streamline arc, the whole sensor can be inserted as long as a little pressure is applied, at this time, the elastic movable surface is automatically in an elastic balance state, the sensor can be fixed in the built-in pocket, and the conductive contacts can be in elastic contact with and electrically connected with the sensing wires.

When the sensor 30 is inserted into the built-in pocket 26, since the sensor 30 in the built-in pocket 26 is not visible from the outside, the sensor 30 may be easily carelessly disposed along with the replaced diaper to cause waste. To prevent this, the sensor 30 of the present embodiment may further include a hanging ornament 49, when the sensor 30 is inserted into the pocket 26, the hanging ornament 49 may be left outside the pocket as an identification, and when the identification is seen by the user, the user can know that the sensor 30 is still in the pocket, so as to remind the user to pay attention and take out the sensor 30 before the diaper is disposed.

The hanging ornament 49 may employ user-friendly designs (e.g., logo, ornaments, toys, etc.) and materials (e.g., plastic, silicone, foam, leather, cloth, etc.), and may employ a relatively conspicuous color to allow the user to readily notice its presence. The connection 48 between the hanging ornament 49 and the main body device (or the elastic movable surface) can be either a soft connection (e.g. rope, cloth, silicone, leather) or a hard connection (e.g. plastic, metal), depending on the actual needs and the user's preference.

Fig. 10A and 10B are schematic front structural diagrams and schematic cross-sectional structural diagrams C-C' of the sensor according to the embodiment of the invention, in which two sides of the sensor include the elastic movable surface and the locking device. Unlike the elastic movable surface of the previous embodiments, which is disposed on the front surface of the inductor, the elastic movable surface of the present embodiment is disposed on either or both sides of the inductor. The sensor 30 of this embodiment includes a long, flat, streamlined body 36, with right and left

sides

303, 304 and head and tail ends 305, 306, which is inserted into a built-in pocket in the direction Y during use.

The left and

right sides

303, 304 of the sensor 30 respectively include elastic movable surfaces 81 (including three positions/

states

81a, 81b, 81 c) and 83 (including three positions/

states

83a, 83b, 83 c), where 81a and 83a are positions when the elastic movable surfaces are in a freely extending state, 81b and 83b are positions when the elastic movable surfaces are in a locked state/under extreme pressure, and 81b and 83b are positions when the elastic movable surfaces are in an elastic equilibrium state. The elastic movable surfaces are connected with elastic

locking control devices

85 and 86 which comprise elastic devices and locking devices and can provide elastic force for the elastic movable surfaces 81 and 83 and lock the elastic force.

When the elastic force locking

control devices

85 and 86 are in the unlocked state and no external force acts on the elastic surfaces 81 and 83, the elastic movable surfaces are driven by the elastic force to stretch to the

positions

81a and 83a and enter the free stretching state, and the width of the inductor is the maximum value. When the elastic

locking control devices

85 and 86 are in the locking state, the elastic locking of the elastic movable surfaces 81 and 83 can be realized to lose the elasticity, at the moment, the elastic movable surfaces can be contracted to the

positions

81b and 83b, at the moment, the inductor enters the limit compression state, the width of the inductor is the minimum value, and the inductor can be conveniently inserted into the built-in pocket.

The state of the elastic locking devices 81 and 83 can be switched by external force, usually by pressing to lock and then pressing to release/unlock, which is similar to the principle that the SD card seat on the market is pressed to insert and lock the SD card and then pressed to eject the SD card. The sensor has two symmetrical elastic movable surfaces 81 and 83 which are respectively positioned at the left side and the right side of the sensor, the design is convenient to operate, and two fingers can be used for pinching the two sides of the sensor to lock the sensor once and then releasing the lock once.

The sensor 30 can be inserted into the built-in pocket in a locked state, after the sensor is inserted, the two sides of the sensor are pinched to release the locking, the elastic movable surfaces 81 and 83 can restore the elastic property to stretch towards the two sides and act on the inner walls of the two sides of the built-in pocket to fix the sensor, and at the moment, the elastic movable surfaces 81 and 83 enter an elastic force balance state and are positioned at the

positions

81c and 83 c.

Because the built-in pocket of the paper diaper is made of soft materials such as non-woven fabrics, PE films and the like and has great flexibility, the built-in pocket can be tightened under the action of the elastic movable surface, the tension generated by the tightening can enable the inner wall of the built-in pocket to be tightly attached to the inductor, at the moment, the induction wire can be tightly attached to the raised conductive contact of the inductor, and the contact and the induction wire are elastically contacted and reliably electrically connected.

When the diaper needs to be replaced, the elastic movable surfaces 81 and 83 on the two sides of the sensor can be pinched to enable the sensor to enter a locking state, so that the sensor 30 can be conveniently taken out of the pocket. In the present embodiment, the sensor 30 has two elastic movable surfaces/elastic locking control devices on the left and right sides, and in practical applications, the elastic movable surfaces/elastic locking control devices may be disposed on only one side, but the extension range of the elastic movable surfaces is reduced by half, which may be determined according to practical application requirements.

In the cross-section C-C' shown in fig. 10B, it can be seen that when the inductor is in the state of elastic equilibrium and the elastically movable surfaces are in the positions 81C, 83C, the pocket is stretched and pressed against the outer contour of the inductor and forms the contour 24, which is shown in the form of a tangent between the two protruding elements. In the elastic force equilibrium state, the contour 24 of the cross section can represent the outer contour of the sensor 30 and the inner contour of the inner pocket, when the two are overlapped/attached to each other, when the equivalent circumference of the cross section of the sensor 30 (i.e. the length of the contour 24 of the cross section) is the same as the circumference of the cross section of the inner pocket.

Fig. 11 is a schematic front view of the sensor according to the embodiment of the present invention, wherein both sides of the sensor include an elastic movable surface formed by arched wire springs. The resilient

active surfaces

87, 88 of this embodiment may be formed by arcuate wire springs. Both ends of the arch wire spring may be disposed inside the body means 36, and the intermediate interposed portion is exposed outwardly from the left and

right sides

303, 304 of the body means 36, so that the width change of the inductor is realized by the height change of the elastic

movable surfaces

87, 88 in different states.

In the initial state of no pressure, the elastic

active surfaces

87, 88 are in a freely stretched state, with the height being the highest and the width of the inductor 30 being the maximum. When the sensor is pressed on both sides (e.g. by pinching the sides of the sensor with two fingers), the resiliently

movable surfaces

87, 88 contract inwardly and their height decreases, reducing the width of the sensor. If the force applied is greater than the predetermined threshold, the flexible moving

surfaces

87, 88 will be flush with the left and

right edges

303, 304 of the main body, the height of the flexible moving surfaces is the lowest, the width of the sensor is the minimum, and the flexible moving

surfaces

87, 88 enter the extreme compression state.

Since the front end 89 of the sensor 30 of this embodiment is narrow and thin, and the flexible moving

surfaces

87 and 88 are of a smooth streamline design, the sensor 30 can be inserted into the built-in pocket by applying a certain force. The flexible moving

surfaces

87 and 88 of the sensor 30 in the built-in pocket can contract inwards to reduce the height of the sensor due to the extrusion of the inner wall of the pocket, meanwhile, the flexible moving

surfaces

87 and 88 can act on the inner walls of the two sides of the built-in pocket to tighten the pocket and generate tension to tighten and fix the sensor, at the moment, the flexible moving

surfaces

87 and 88 are in a flexible balance state, the width of the sensor is between the width of a free extension state and the width of a limit compression state, and the equivalent circumference of the external contour of the sensor 30 on a specific cross section is consistent with the circumference of the built-in pocket.

In order to increase the elasticity of the elastic

movable surfaces

87 and 88, a coil spring 38 may be added between the two elastic movable surfaces, or the coil spring 38 may be added between the elastic movable surfaces and the main body device 36. In addition, a hanging ornament 49 can be added to the main body device 36 to serve as an indicator that the sensor is inserted into the built-in pocket, and the user can take the sensor 30 out of the built-in pocket conveniently.

Fig. 12 is a schematic front view of an inductor according to an embodiment of the present invention, wherein two sides of the inductor include an elastic movable surface formed by C-shaped wire springs. In addition to using arcuate wire springs, the flexible activation surfaces of the present embodiment may be formed by C-shaped wire spring 80, with the center portion of C-shaped wire spring 80 being secured within body structure 36 by securement device 35, and the left and right arms of the C-shaped wire spring extending outwardly on the left and right sides of body structure 36 and forming flexible activation surfaces 87, 88.

Like the other embodiments, the elastic active surface of the present embodiment also includes three states of free extension (when not pressed), extreme pressing (when the sensor is pinched by fingers on the left and right sides), and elastic balance (when inserted into the built-in pocket). To facilitate insertion into the pocket, the sensor 30 of this embodiment is of a streamlined design with a wide middle portion and narrow ends, so that the front portion 89 of the sensor can be easily inserted into the pocket in the direction Y, and then the entire sensor can be inserted into the pocket with a slight pressure, because the wide middle portion is the compressible elastic moving

surfaces

87, 88, and the sensor will automatically match with the pocket and enter into an elastic equilibrium state.

The wire spring of the present embodiment may be a metal spring (for example, a phosphor copper wire, a manganese steel wire, an alloy wire, etc.), or may be an elastic material such as a plastic spring (for example, made of nylon, PC, etc.) or carbon fiber. If a metal spring 41 is used, the metal spring may be covered with a layer of resilient material, which on the one hand protects the metal spring and on the other hand increases its diameter so that the resilient

active surfaces

87, 88 have the appropriate width/wire diameter.

Fig. 13A, 13B and 13C are schematic front, right and bottom views of an inductor according to an embodiment of the present invention, wherein the inductor includes elastic movable surfaces formed by O-shaped wire springs on two sides thereof. Unlike the other embodiments described above, the flexible moving

surfaces

87, 88 of this embodiment are formed by the outward projections of the left and right sides of one O-shaped wire spring 82 on both

sides

303, 304 of the inductor. The fact that the entire O-spring 82 is disposed around the periphery of the body member 36 allows the body member 36 to be highly independent, particularly without affecting the internal structure and waterproof sealing of the body member 36.

In order to fix the O-shaped wire spring 82,

grooves

91 and 92 are respectively formed on the left and right sides of the main body unit 36, which not only fix the wire spring 82, but also provide sufficient elastic movement space for the elastic movement surfaces 87 and 88 formed by the O-shaped wire spring 82 on the two sides of the main body unit.

When the O-shaped wire spring 82 of this embodiment is in the initial state, the height of the protrusions of the elastic

movable surfaces

87 and 88 is the highest, and the width of the inductor is the widest, and at this time, the elastic

movable surfaces

87 and 88 are in the free extension state; when external force exceeding a preset threshold value acts on the elastic

movable surfaces

87 and 88 at the same time (for example, two fingers are used for pinching the left side and the right side of the sensor 30), the elastic

movable surfaces

87 and 88 are tightly attached to the

grooves

91 and 92, the height of the protrusions of the elastic movable surfaces is the lowest, the width of the sensor is the narrowest, and the elastic

movable surfaces

87 and 88 are in a limit compression state; when the external force disappears, the elastic

movable surfaces

87 and 88 can restore the initial state/free stretching state; when the user inserts the sensor 30 into the pocket with a certain force along the direction Y, the height of the elastic

movable surfaces

87, 88 is between the free extension state and the extreme compression state, and the elastic movable surfaces enter the elastic balance state.

O-wire spring 82 of this embodiment is also designed to be removable from body assembly 36, thereby facilitating installation and replacement of the O-wire spring. A hanging ornament 49 may be attached to the O-ring spring to serve as a marker when the sensor is inserted into the pocket, and to facilitate removal of the sensor 30 from the pocket by the user.

For the sake of illustration, the three views of the present embodiment are not necessarily drawn to scale and correspond to each other, for example, the size of the wire diameter of the O-shaped wire spring 82 in the front view is not shown, but this does not affect the imagination of the overall appearance of the inductor and the understanding of the relationship between the components. In addition, in practical application, the cross section of the inductor can be designed to be closer to an oval shape, namely, four sides of the inductor can be designed to be thinner, so that the inductor can be inserted more easily, and meanwhile, the flat surface of the inductor can increase certain radians, so that tension generated by the built-in pocket can better act on the cambered surface, particularly act on the conductive contact, and details are omitted.

Fig. 14 is a schematic structural diagram of an appearance of the sensor according to the embodiment of the present invention when used in combination with a diaper-type smart absorbent article including a sensing wire and a built-in pocket. A disposable diaper is another typical disposable absorbent article, and this embodiment is a state in which the diaper is unfolded and viewed from the outside. The disposable diaper 13 of this embodiment comprises an absorbent layer 12, a top sheet 11, and a bottom sheet 15, wherein the top sheet 11 overlaps the bottom sheet 15. The diaper front edge 18 corresponds in use to the user's abdomen and the diaper rear edge 19 corresponds in use to the user's back, and the built-in pocket 26 is generally located near the front edge 18 to avoid the user's weight from directly pressing on the built-in pocket 26 when lying flat.

The length of the sensing film 40 and the

sensing lines

21, 22 are selectable. The sensing film 40 is usually chosen to be as long as the nappy 13, so that the sensing film can be cut together with the nappy during production, simplifying the production process. The sensor lines 21, 22 are typically chosen to be as long or slightly longer than the absorbent layer 12 so that the sensor lines span the entire absorbent area of the diaper. In order to prevent moisture in the absorbent layer 12 from shorting the

sensing lines

21, 22, a blank area/safe area without sensing lines is usually provided around the sensing film 40, so as to prevent urine at the edge of the sensing film 40 from contacting the

sensing lines

21, 22 and shorting the sensing lines, which may cause inaccurate detection or false triggering.

The sensor film 40 is generally positioned between the carrier film 15 and the absorbent layer 12 with the

sensor wires

21, 22 oriented toward the carrier film 15 such that when the sensor 30 is inserted into the internal pocket 26 from the opening 23 of the carrier film 15, the conductive contacts of the sensor 30 are in face-to-face contact with and electrically connected to the

sensor wires

21, 22 of the sensor film 40. The inner pocket 26 may be formed by a glue-spraying process between the base film 15 and the sensing film 40, in which a region where no glue is sprayed forms the inner pocket 26 and a region where the glue is sprayed forms a bonding boundary of the inner pocket, thereby obtaining a waterproof inner pocket 26 with four sides bonded.

Fig. 15 is a schematic diagram of a pattern design of a sensing film having four sensing lines for use with the sensor according to the embodiment of the invention. In the embodiment of the present invention, the sensing film 40 can have a plurality of different sensing line numbers and pattern designs, and the common sensing line numbers include 2, 4, and 6, etc., while the foregoing embodiment mainly uses 2 sensing lines as an example for illustration.

In this embodiment, the sensing region 12 ' of the sensing film comprises 4 parallel sensing lines, and when the sensing film 40 is disposed in a diaper for use, the sensing region 12 ' corresponds to the absorbent layer 12 of the diaper, and the connecting region 26 ' corresponds to the inner pocket 26 of the diaper. In the present embodiment, 4 sensing lines of the sensing region 12 'are combined into 2 sensing lines before reaching the connection region 26', and are connected to the first sensing line 21 and the second sensing line 22, respectively. To enable precise positioning during the manufacturing process, the sensing film 40 typically further includes color registration marks 42 for tracking and positioning the sensing region 12 'and the connecting region 26' of the sensing film 40.

Fig. 16 is a schematic diagram of a pattern design of a sensing film having four improved sensing lines for use with a sensor according to an embodiment of the present invention. In the embodiment of the invention, no matter how many sensing lines are, the sensing lines are combined into two groups/2 lines finally. The sensing area 12' of the present embodiment includes 4 parallel sensing lines, the 1 st and 3 rd sensing lines form a group from top to bottom, and the sensing lines are combined at the right edge of the sensing film to form a sensing line 22; and the 2 nd and 4 th sensing lines are another group, and are combined into a sensing line 21 at the left edge of the sensing film. In this embodiment, each group of sensing lines forms a C-shape, and two C-shape sensing lines are interpenetrated and inserted together in a face-to-face manner.

When the sensing film 40 is disposed inside a diaper for use, the sensing region 12 'corresponds to the absorbent layer 12 of the diaper, and the connecting region 26' corresponds to the built-in pocket 26 of the diaper. Unlike the case of fig. 15 in which the sensing region 12 ' is juxtaposed with the connection region 26 ', the connection region 26 ' of the present embodiment is located within the sensing region 12 ', and thus the range of the sensing region 12 ' is effectively enlarged.

Fig. 17 is a schematic diagram of a pattern design of a sensing film having six sensing lines for use with a sensor according to an embodiment of the invention. The sensing film 40 of the present embodiment has 6 parallel sensing lines in the sensing region 12', wherein the 1 st, 3 rd and 5 th sensing lines from top to bottom are in one group and combined into the sensing line 21 at the right edge, and the 2 nd, 4 th and 6 th sensing lines are in another group and combined into the sensing line 22 at the left edge. Each group of sensing lines in the embodiment form an E-shape, and two E-shape sensing lines are interpenetrated and inserted together in a face-to-face manner. The connection region 26 'of this embodiment is also located within the sensing region 12', and the range of the sensing region is effectively enlarged.

When the sensing film needs to be provided with more sensing lines (the more the sensing lines are, the wider the detection range is), the design can be made according to the above principle, for example, each set of sensing lines can be designed to be comb-shaped, then combined into the first sensing line 21 and the second sensing line 22, then the two sensing lines with comb-shaped structures are inserted together in a face-to-face penetrating manner to form the sensing region 12 ', and finally a position is selected as the connection region 26' in the sensing region.

Fig. 18 is a functional block diagram of a moisture monitoring system of an intelligent absorbent article according to an embodiment of the present invention, which is an application system formed by the sensor according to the embodiment of the present invention and the disposable absorbent article including the sensing line and the built-in pocket, and is a general summary of the related drawings of the embodiment of the present invention. The smart absorbent article 10 according to the embodiment of the present invention comprises a disposable absorbent article, the disposable absorbent article comprises an inner pocket 26, the inner pocket 26 comprises a first sensing line 21 and a second sensing line 22 exposed in the pocket, the

sensing lines

21 and 22 are disposed on a sensing film and cross an absorbent layer of the absorbent article, and the moisture state of the absorbent article can be detected through a capacitive sensing method. The figure also includes a sensor 30, and the sensor 30 includes four

conductive contacts

31, 32, 33 and 34, wherein the

contacts

31 and 32 are respectively contacted and electrically connected with the

sensing lines

21 and 22 for detecting the moisture state of the absorbent article. The

contacts

31 and 33 together form a first insertion detection device 51 and the

contacts

32 and 34 together form a second insertion detection device 52.

When the sensor 30 is inserted into the pocket 26, the

contacts

31, 33 of the sensor will simultaneously contact the first sensing line 21 and trigger the first insertion detection device 51, and the

contacts

32, 34 will contact the second sensing line 22 and trigger the second insertion detection device 52. When the sensor 30 is removed from the built-in pocket, the insertion detection devices 51, 52 are shielded at the same time. The sensor 30 further comprises automatic switch control means 53 which controls the operating state of the sensor, for example when the insertion detection means is triggered, the sensor may be activated to enter an on state to perform a wetness detection, and when the insertion detection means is shielded, the sensor may be shielded to enter an off state to save power, which is important for the sensor 30 using the battery 55 and being used as a wearable device, longer battery life meaning better user experience.

The sensor 30 further comprises a moisture detection means 54 which is in contact with the

sensing wires

21, 22 via the

contacts

31, 32 and detects the capacitance between the two sensing wires, and calculates/judges the moisture state/urine volume of the absorbent article based on the capacitance, thereby realizing a quantitative moisture detection function. The detected wetness/urine level may further be wirelessly transmitted by the sensor wireless transmission device 56. The sensor 30 further includes a status indicator 57 for providing an operational status indication to a user.

The embodiment further comprises a wireless receiving device 70, wherein the wireless receiving device comprises a wireless receiving unit 71, and after the moisture state information of the absorbent article is received, a state display unit 72 can display the state, and a state alarm unit 73 can give an alarm. Common wireless transmit/receive devices include bluetooth, Lora, GSM, CDMA, Wi-Fi, NB-IoT, 2G, 3G, 4G, 5G, etc., and may also include custom low power wireless devices. In addition, the wireless receiving device can also be used as a smart phone, a personal computer or a tablet personal computer, and the like, can run software/App on the smart phone or the computer, and realizes the functions of monitoring the moisture state, recording data and inquiring the intelligent absorption article in a mode of combining software and hardware.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims

1. A sensor for realizing fixation and electric connection based on autonomous elasticity is used for being inserted into a built-in pocket of an absorption article, can be fixed with the built-in pocket and can be electrically connected with a sensing wire in the built-in pocket based on the autonomous elasticity, and is characterized by comprising a main body device and at least one elastic movable surface, wherein the main body device comprises a flat streamline outer outline and comprises a first flat surface and a second flat surface, the first flat surface comprises at least two slightly raised conductive contacts, the main body device further comprises a detection device for detecting the damp state of the absorption article through the sensing wire, at least one part of the elastic movable surface is positioned outside the main body device and forms the outer outline of the sensor together with the main body device, and the equivalent perimeter of the cross section of the outer outline can change along with the state change of the elastic movable surface, which comprises the following steps:

when the inductor is inserted into the built-in pocket and has no external force and is unlocked, the elastic movable surface enters an elastic balance state, the equivalent circumference of at least one cross section of the inductor at the position of the elastic movable surface is equal to the circumference of the cross section of the built-in pocket in the state, the elastic force of the elastic movable surface can effectively act on the inner wall of the built-in pocket, the built-in pocket generates a reaction force or tension force to effectively wrap and fix the inductor, and the induction line is tightly attached to the conductive contact to realize elastic contact and reliable electric connection.

2. The sensor of claim 1, wherein the sensor comprises the flexible active surface on at least one side thereof, wherein a change in the operational state of the flexible active surface causes a change in the width of the sensor and further causes a change in the equivalent perimeter of the cross-section of the sensor; when the elastic movable surface is in a free extension state, the width of the inductor is the maximum value; when the elastic movable surface is in a limit pressed state, the width of the inductor is the minimum value; and when the elastic movable surface is in an elastic force balance state, the width of the inductor is between the maximum value and the minimum value.

3. The inductor of claim 2, wherein:

the device comprises an arch-shaped wire spring, wherein the arch-shaped wire spring comprises a convex part at any side or two sides of the main body device and forms the elastic movable surface; or

The O-shaped wire spring comprises convex parts at two sides of the main body device and forms the elastic movable surface; or

The C-shaped wire spring comprises convex parts at two sides of the main body device and forms the elastic movable surface; or

The device comprises a coil spring, wherein one end of the coil spring is fixed on the main body device, and the other end of the coil spring is fixed on the elastic movable surface; or

The elastic movable surface is characterized by comprising a coil spring, wherein two ends of the coil spring are respectively fixed on the elastic movable surfaces on the left side and the right side of the main body device; or

4. The sensor of claim 1, wherein the flexible active surface is disposed on a second flat surface of the body means, and when the state of the flexible active surface changes, the distance between the flexible active surface and the body means changes, thereby changing the thickness of the sensor and causing the equivalent circumference of the cross-section of the sensor to change; the thickness is at a maximum when the elastic movable surface is in a freely stretched state, at a minimum when the elastic movable surface is in a limit compressed state, and between the maximum and minimum when the elastic movable surface is in an elastic equilibrium state.

5. The inductor of claim 4, wherein:

the device comprises a C-shaped sheet spring, wherein one end of the C-shaped sheet spring is fixed on the main body device, and the other end of the C-shaped sheet spring is fixed on the elastic movable surface and provides elasticity for the elastic movable surface; or

The device comprises a C-shaped sheet spring, wherein one end of the C-shaped sheet spring is fixed on the main body device, and the other end of the C-shaped sheet spring forms the elastic movable surface; or

Comprises an arched sheet spring, one end of which is fixed on the main body device, and the other end of which is suspended or can slide; or

The elastic locking control device is characterized by comprising an elastic locking control device, wherein one end of the elastic locking control device is fixed on the main body device, and the other end of the elastic locking control device is fixed on the elastic movable surface and provides elasticity for the elastic movable surface or locks the elastic movable surface.

6. The sensor of claim 1, comprising an insertion detection device and at least three conductive contacts, wherein when the sensor is inserted into the built-in pocket and two of the conductive contacts are in contact with the same sensing wire, the insertion detection device is triggered to enable the sensor to enter an operating state, and the main body device further comprises a wireless transmission device for transmitting the state information of the absorbent article detected by the detection device to the outside.

7. The sensor of claim 1, comprising a hanging ornament, wherein when the sensor is inserted into the built-in pocket, the hanging ornament is left outside the built-in pocket to serve as an identifier for the sensor insertion, so as to remind a user of attention and facilitate the user to take the sensor out of the built-in pocket.

8. A device for monitoring the moisture state of a smart absorbent article, comprising a smart absorbent article and the sensor according to claim 1, wherein the smart absorbent article comprises a disposable absorbent article, and a sensing wire and a built-in pocket arranged on the disposable absorbent article, and the sensor is suitable for being inserted into the built-in pocket for use, electrically connected with the sensing wire and used for detecting the moisture state.

9. The monitoring device of claim 8, wherein the disposable absorbent article comprises at least two sensing wires, at least a portion of the sensing wires is located in the built-in pocket, the sensor comprises at least two conductive contacts, when the sensor is inserted into the built-in pocket, the elastic force generated by the elastic movable surface can make the conductive contacts cling to the sensing wires to realize elastic contact and electric connection, and the moisture state detection function of the disposable absorbent article can be realized through the sensing wires.

10. The monitoring device of claim 9, including wireless receiving means and said sensor includes wireless transmitting means for performing wireless wetness condition monitoring and condition display functions of said disposable absorbent article.