CN113967130A

CN113967130A - Electronic humidity-sensing saturation paper diaper and related method

Info

Publication number: CN113967130A
Application number: CN202010715544.1A
Authority: CN
Inventors: 傅海纳; 杨斌
Original assignee: Foshan Yongai Yiyang Mall E Commerce Co ltd
Current assignee: Foshan Yongai Yiyang Mall E Commerce Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2022-01-25

Abstract

The invention discloses an electronic humidity-sensing saturation paper diaper and a related method, which relate to the technical field of absorption articles and comprise the following steps: a flexible waterproof film; a strip-shaped parallel line arranged on one surface of the flexible waterproof film, flexible electrodes which are mutually separated and insulated from each other up and down, an upper positive electrode, a middle insulation and a lower negative electrode; a water-permeable woven fabric layer; the absorption layer is arranged on the other side of the flexible waterproof film, is positioned between the flexible waterproof film and the water-permeable woven fabric layer and is used for absorbing liquid entering from the water-permeable woven fabric layer; the flexible waterproof film, the flexible electrode and the liquid contained in the absorption layer form a nonpolarity variable electrolytic capacitor, wherein the flexible electrode is used as an electrode of the electrolytic capacitor, the flexible waterproof film is used as a dielectric medium of the variable electrolytic capacitor, the liquid is used as an electrolyte of the variable electrolytic capacitor, and the humidity state of the electronic moisture-sensing absorption article can be obtained by detecting the capacitance value and the change of the variable electrolytic capacitor.

Description

Electronic humidity-sensing saturation paper diaper and related method

Technical Field

The invention relates to the technical field of absorbing articles, in particular to an electronic humidity-sensing saturation paper diaper and an analysis and manufacturing method thereof.

Background

The disposable absorption articles comprise absorption articles such as paper diapers, paper urine pads and sanitary towels, and the disposable absorption articles all have the problem of needing to be replaced at proper time, and if the disposable absorption articles are replaced too frequently, the disposable absorption articles are troublesome and waste; however, if the replacement is too late, there is a possibility that liquid leakage may occur because the absorbent capacity of the absorbent article is limited. How to dynamically detect and display the excretion situation of a user, including excretion times, excretion amount and whether the absorption capacity of the absorption article is close to saturation, has a great reference value for reasonable use of the absorption article.

However, the information provided by the conventional urine wetness detection technology is limited, and one of the most common technologies is to generate a urine wetness prompt signal by short-circuiting the electrodes with urine, and the urine wetness detection method can only detect whether urine wetness has occurred but not how much urine wetness has occurred in principle, and can not provide dynamic information of the urine wetness process and information whether the absorption capacity of the absorbent article is close to saturation, which needs a new technical solution.

Therefore, there is a need for an electronically moisture-sensitive diaper and related methods to solve the above problems.

Disclosure of Invention

Technical problem to be solved

The present invention is directed to an electronic wetness saturation diaper and related method, which solve the above-mentioned problems of the prior art.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the invention provides an electronic humidity-sensing saturation paper diaper,

comprises a flexible waterproof film;

a strip-shaped parallel line arranged on one surface of the flexible waterproof film, flexible electrodes which are mutually separated and insulated from each other up and down, an upper positive electrode, a middle insulation and a lower negative electrode;

a water-permeable woven fabric layer;

the absorption layer is arranged on the other side of the flexible waterproof film, is positioned between the flexible waterproof film and the water-permeable woven fabric layer and is used for absorbing liquid entering from the water-permeable woven fabric layer;

the flexible electrode and the absorption layer are respectively positioned on two sides of the flexible waterproof film and are isolated and insulated from each other;

the flexible waterproof film, the flexible electrode and the liquid contained in the absorption layer form a non-polar variable electrolytic capacitor, wherein the flexible electrode is used as an electrode of the variable electrolytic capacitor, the flexible waterproof film is used as a dielectric medium of the variable electrolytic capacitor, the liquid is used as an electrolyte of the variable electrolytic capacitor, and the moisture state of the electronic sensing wet saturation diaper can be obtained by detecting the capacitance value and the change of the variable electrolytic capacitor;

wherein the absorption layer comprises a first absorption body and a second absorption body mixed in the first absorption body, the first absorption body is used for absorbing liquid entering from the water-permeable woven fabric layer and increasing the capacitance value of the variable electrolytic capacitor, and the second absorption body is used for absorbing liquid from the first absorption body, so that the liquid content in the first absorption body is reduced and the wet area is reduced, and the capacitance value of the variable electrolytic capacitor is reduced.

The first absorber has a higher moisture absorption speed than the second absorber, the second absorber has a higher moisture absorption capacity than the first absorber and has a higher moisture absorption locking capacity, so that the process of transferring the liquid from the first absorber to the second absorber is realized, the process can be dynamically reflected in the change of the capacitance value, the first absorber comprises wood pulp, cotton pulp, fluffy cloth or a fine water storage space formed by soft and loose materials, and the second absorber comprises fine granular high polymer water-absorbent resin.

The flexible waterproof film is arranged on the flexible electrode, the absorption layer is arranged on the flexible waterproof film, the hydrophilic layer is arranged between the flexible waterproof film and the absorption layer and is used for absorbing liquid from the absorption layer and is beneficial to maintaining the surface area of the flexible electrode covered by the liquid unchanged, so that the change of the capacitance value of the variable electrolytic capacitor is reduced, and the hydrophilic layer comprises any one or any combination of a hydrophilic material layer, a hydrophilic film, hydrophilic fibers and a hydrophilic coating.

Wherein, flexible waterproof membrane is flexible waterproof ventilative film with between the hydrophilic layer, and in hugging closely the ventilated membrane be provided with the prevention of seepage coating on the surface, be used for preventing the liquid that contains in the hydrophilic layer passes through waterproof ventilative film seepage, thereby prevent the short circuit takes place between the flexible electrode of mutual separation insulation.

The flexible waterproof film comprises a flexible insulating protective layer, covers the flexible electrode and is used for preventing a human body from contacting the electrode to influence the capacitance value of the electrolytic capacitor.

The flexible waterproof film comprises a polyethylene film, and the water-permeable woven fabric layer comprises non-woven fabric or hot air non-woven fabric.

Wherein, the electronic moisture-sensitive absorbing article is any one of a paper diaper, a paper diaper pad and a sanitary towel.

The flexible electrode comprises a urine wet induction line printed on the flexible waterproof film by adopting carbon conductive ink;

the electronic wet saturation paper diaper further comprises a urine wet detection device, the urine wet detection device is electrically connected with the urine wet induction line and is used for detecting the urine wet condition of the electronic wet saturation paper diaper, and the urine wet detection device comprises:

the charging and discharging unit is used for carrying out periodic charging and discharging operation on the urine wet induction line;

an analog-to-digital conversion unit for acquiring capacitance value data or voltage peak value data related to the magnitude of the capacitance value generated between the urine wetness sensing lines through the periodic charge and discharge operations;

the processor is used for controlling the charging and discharging unit and the analog-to-digital conversion unit and processing a series of voltage peak value data or capacitance value data to obtain quantized urine wet state information;

wherein, the urine wet detection device further includes:

the data information storage unit is used for storing the series of voltage peak value data or capacitance value data and forming a voltage curve or a capacitance curve reflecting the wet state of the electronic humidity-sensing saturation paper diaper;

the moisture validity confirming unit is used for judging whether moisture occurs once according to the condition that the voltage curve is reduced from an original value or a peak value or according to the condition that the capacitance curve is increased from an original value or a valley value;

the humidity state output unit is used for outputting humidity state information of the electronic humidity saturation paper diaper;

a dryness recovery confirming unit, configured to determine whether the electronic wetness saturation diaper has recovered to a dry state according to a situation that the voltage curve rises from a trough value or a situation that the capacitance curve falls from a peak value;

the humidity frequency calculating unit is used for counting the frequency of humidity according to the output of the humidity effectiveness confirming unit, and outputting a signal for replacing the electronic humidity sensing saturation paper diaper when the frequency reaches a preset trigger value;

the humidity duration calculation unit is used for calculating time from the trough of the voltage curve or the crest of the capacitance curve, and outputting a signal for replacing the electronic humidity saturation paper diaper when the electronic humidity saturation paper diaper does not recover a dry state when the time exceeds a preset trigger value;

the humidity degree analysis unit is used for judging the humidity degree of the electronic humidity saturation paper diaper according to the descending amplitude of the voltage curve or the ascending amplitude of the capacitance curve, and outputting a signal for replacing the electronic humidity saturation paper diaper when the change exceeds a preset trigger value;

and the discharge duration calculation unit is used for outputting a signal for replacing the electronic humidity-sensing saturation paper diaper from the beginning of timing when the effective humidity is generated to a preset time trigger value and the curve does not form an effective voltage trough or a capacitance wave crest.

Wherein the moisture validity confirming unit confirms that moisture has occurred once when the voltage curve is decreased by 3% -30% from an original value or a peak value.

Wherein, when the voltage curve rises from the trough by 3-30%, the dryness restoration confirming unit confirms that the electronic moisture-sensitive absorbent article has restored to a dry state.

The preset humidity frequency trigger value range is 1 time to 10 times, the preset humidity duration trigger value range is 1 minute to 60 minutes, the preset humidity degree trigger value range is 10 percent to 90 percent of the original voltage value, and the preset discharge time trigger value range is 10 seconds to 300 seconds.

Wherein, the urine wet detection device further includes:

and the wireless transmitting unit is used for transmitting the information related to the voltage peak data in a wireless mode.

The electronic moisture-sensing absorption article is a paper diaper, the paper diaper comprises a front belly sticker, the front belly sticker comprises a magic sticker and is used for sticking the urine moisture detection device, and notches are respectively arranged on two sides of a urine moisture induction line of the front belly of the paper diaper and are used for overturning the urine moisture induction line and electrically connected with the urine moisture detection device.

Wherein, the wet absorption articles for use of electronic sensing is panty-shape diapers, panty-shape diapers include that the front abdomen pastes, the front abdomen pastes including the magic subsides, is used for pasting wet detection device of urine, and the wet response line position of urine of panty-shape diapers front abdomen includes a bulge, be used for by after the upset with wet detection device of urine electrical connection.

Wherein, the urine wet detection device further includes:

the bottom shell is provided with a magic tape and is used for sticking and fixing the urine wetness detecting device on the electronic wetness sensing absorption article;

the surface shell and the bottom shell form a sealing body together;

the electronic circuit board is positioned in the sealing body;

the movable lock catch is used for clamping the electronic moisture-sensing absorption article under the combined action of the movable lock catch and the face shell;

and one end of the probe is positioned between the face shell and the movable lock catch, and when the electronic humidity sensing absorption article is clamped, the probe is electrically connected with the urine humidity sensing line on the electronic humidity sensing absorption article to acquire a variable capacitance value signal provided by the electronic humidity sensing absorption article and transmit the variable capacitance value signal to the electronic circuit board.

Wherein, the urine wet detection device further includes:

and the shell opening groove is used for separating the face shell and the bottom shell so as to conveniently replace the battery.

Wherein, the urine wet detection device further includes:

the shell sealing ring is positioned between the face shell and the bottom shell and used for sealing between the face shell and the bottom shell;

and the probe sealing ring is positioned between the probe and the face shell and used for sealing between the probe and the face shell.

The urine wetness detecting device is of a flat circular structure, the diameter range of the circle is 15 mm to 50 mm, and the thickness range of the circle is 5 mm to 20 mm.

Wherein, the urine wet detection device further includes:

the clamping piece detection unit is used for judging whether the movable lock catch clamps the electronic moisture-sensitive absorbing article, and when at least 2 probes simultaneously contact the same urine-moisture induction line, the clamping piece detection unit sends a clamping piece signal and lights an LED indicating lamp on the clamping piece signal.

Wherein, the urine wet detection device further includes: and the sleeping posture detection unit sends a lying sleeping signal when the urine humidity detection device is turned over.

Wherein, the urine wetness sensing line crosses the electronic wetness sensing absorption article, the width range of the urine wetness sensing line is 3 to 15 millimeters, and the interval range of the adjacent urine wetness sensing lines is 3 to 15 millimeters.

In another aspect, the present invention provides a method for making a disposable absorbent article capable of providing dynamic fluid absorption process information and absorbent capacity information, comprising the steps of:

selecting a flexible waterproof film as a base material;

one side of the waterproof film is provided with a strip-shaped parallel line, flexible electrodes which are mutually separated and insulated from each other up and down, an upper positive electrode, a middle insulation and a lower negative electrode;

covering a flexible insulating layer on the electrode;

arranging a first absorber on the other surface of the waterproof film at a position corresponding to the electrode;

a second absorber is arranged above the first absorber or mixed in the first absorber, the second absorber has strong moisture absorption and locking capacity, and the first absorber and the second absorber form an absorption layer of the electronic moisture-sensing absorption article;

covering a layer of water-permeable braided fabric above the absorption layer, and fixing the absorption layer between the waterproof film and the water-permeable braided fabric;

by the arrangement, a disposable absorbent article which can be injected with liquid from the water-permeable woven fabric layer, can absorb the liquid by the first absorbent, can absorb and lock water from the first absorbent by the second absorbent and can prevent the liquid from leaking by the waterproof film is formed; and is

The electrode, the waterproof film and the liquid contained in the first absorber form a special non-polar variable electrolytic capacitor, wherein the flexible electrode is used as an electrode of the electrolytic capacitor, the waterproof film is used as a dielectric of the electrolytic capacitor, the liquid contained in the first absorber is used as an electrolyte of the capacitor, the capacitance value of the electrolytic capacitor is related to the content and distribution of the electrolyte liquid contained in the first absorber, and the process that the liquid enters the first absorber from the water-permeable woven fabric layer, and then the second absorber absorbs and locks water from the first absorber can be dynamically reflected in the change of the capacitance value of the electrolytic capacitor.

A material or a coating with specific hydrophilic or hydrophobic property is arranged between the waterproof film and the first absorber and on the surface close to the waterproof film, the hydrophilic or hydrophobic property of the material is different, and the accumulation and distribution of the moisture of the first absorber on the surface of the waterproof film can be influenced, so that the change of the capacitance value of the electrolytic capacitor can be influenced, different capacitance change rules can be generated, and the liquid content or the liquid distribution condition of the first absorber can be obtained by detecting the capacitance value of the capacitor.

Wherein the first absorbent body has a faster but relatively weaker absorption capacity, and the liquid content of the liquid first present in the first absorbent body is increased by the liquid entering from the water-permeable woven fabric layer, so that the capacitance value of the electrolytic capacitor is increased; and

the second absorber has a slower but relatively stronger liquid absorption capacity, and can compete for moisture from the first absorber and lock the moisture, so that the moisture content in the first absorber is reduced, the capacitance value of the electrolytic capacitor is reduced, and a dynamic change process that the capacitance value is increased and decreased is formed; and

the second absorbent has a limited ability to absorb and lock water, and when the second absorbent is close to saturation, the water absorption locking ability of the second absorbent is significantly reduced, so that the capacity of the second absorbent to compete for water from the first absorbent is reduced, and the speed of reducing the capacitance value is reduced, thereby providing information as to whether the liquid absorption locking ability of the electronic moisture absorbent article is close to a limit.

Wherein, the electronic moisture-sensitive absorbing article comprises a disposable paper diaper, a paper diaper pad and a sanitary towel; the waterproof film comprises a polyethylene film; the water-permeable braided fabric comprises a non-woven fabric and a hot air non-woven fabric; the flexible electrode comprises conductive ink lines printed on the waterproof film and metal lines pasted on the waterproof film; the insulating layer covered on the electrode comprises soft and loose non-woven fabric and imitated sticky cloth; the first absorber comprises wood pulp, cotton pulp, fluffy cloth or a fine water storage space made of specific flexible materials; the second absorber comprises fine granular high-molecular water-absorbing resin, and the water-absorbing resin is mixed in the first absorber or embedded in the fine water storage space; the hydrophilic material comprises paper, cotton and hydrophilic fiber; the hydrophobic material comprises non-woven fabrics and hydrophobic fibers; the liquid includes urine, sweat, menstrual blood and other excretions of human or animal containing moisture.

In another aspect, the present invention further provides a method for implementing moisture analysis and status prompt based on the electronic moisture-sensitive absorbent article, comprising the following steps:

the electrodes of the electronic moisture-sensitive absorbing article are periodically charged and discharged to obtain a series of capacitance value information presented at the two ends of the electrodes or voltage information related to the capacitance value of the electrodes, and the voltage or capacitance information data form a dynamic voltage or capacitance curve containing the moisture state information of the electronic moisture-sensitive absorbing article;

analyzing the curve to find out each wave peak value and each wave trough value in the curve;

presetting a moisture confirmation voltage or a capacitance trigger value;

when the voltage curve is decreased from the peak value or the capacitance curve is increased from the valley value and reaches the preset trigger value, judging that one-time effective moisture occurs;

presetting a voltage for recovering dryness or a capacitance trigger value;

when the voltage curve rises from a valley value or the capacitance curve falls from a peak value and reaches the preset trigger value, judging that the electronic moisture-sensitive absorbing article is restored to a dry state;

presetting a moisture frequency trigger value;

and when the frequency of the effective moisture reaches the preset trigger value, sending a signal for replacing the electronic moisture-sensitive absorbing article.

Presetting a minimum voltage or maximum capacitance trigger value;

when the voltage curve is decreased to the preset minimum voltage trigger value or the capacitance curve is increased to the preset maximum capacitance value, the electronic humidity sensing absorption article can be regarded as reaching the maximum humidity degree, and accordingly a signal for replacing the electronic humidity sensing absorption article is sent;

presetting a longest time trigger value for waiting for recovery from dryness;

when the voltage curve is in a trough or the capacitance curve is in a peak and cannot be restored to a dry state within the preset time, the moisture absorption locking capacity of the second absorber is considered to be close to saturation, and accordingly a signal for replacing the electronic moisture-sensitive absorbent article is sent;

presetting a liquid discharge longest time trigger value;

and when the timing is started from the occurrence of the effective moisture once, the voltage curve cannot form an effective trough when the preset time trigger value is reached, or the capacitance curve cannot form an effective peak, the discharge time is considered to be too long, or the moisture absorption locking capacity of the second absorber is close to saturation, so that a signal for replacing the electronic moisture-sensitive absorbent article is sent.

In another aspect, the present invention further provides a system detection device for implementing the moisture analysis and status indication method of claim 30, comprising:

a charging and discharging device for realizing periodic charging and discharging operations of the electrode;

an analog-to-digital conversion unit for acquiring capacitance value data information generated at both ends of the electrodes due to the periodic charge and discharge operations or a series of voltage peak value data information related to the capacitance values of the electronic moisture-sensitive absorbing article;

the data information storage unit stores the series of voltage peak value data information or capacitance value data information and forms a dynamic voltage or capacitance curve reflecting the moisture state of the electronic moisture-sensing absorption article;

the moisture validity confirming unit analyzes and judges the occurrence of primary valid moisture according to the condition that the voltage curve is reduced from an original value or a wave peak value or the condition that the capacitance curve is increased from the original value or a wave trough value;

a moisture state output unit which outputs state information or data related to the moisture state of the electronic moisture-sensitive absorbing article;

and the processor can be connected with, contain or control the related units and realize related functions.

Wherein, still include:

the dryness recovery confirming unit analyzes and judges whether the electronic moisture-sensing absorbent article recovers the dry state or not according to the condition that the voltage curve rises from the trough value or the condition that the capacitance curve rises from the original value or the trough value;

the humidity frequency calculating unit and the humidity frequency trigger value storage unit can count the frequency of humidity occurrence of the electronic humidity sensing absorption article according to the output of the humidity validity confirming unit, and send a signal for replacing the electronic humidity sensing absorption article when the frequency reaches the preset trigger value;

the device comprises a humidity duration calculation unit and a longest time trigger value storage unit for waiting for the recovery of dryness, wherein the time is calculated from the wave trough of the voltage curve or the wave crest of the capacitance curve, and when the time exceeds the preset trigger value and the electronic humidity sensing absorption article does not recover the dryness state, a signal for replacing the electronic humidity sensing absorption article is sent;

the humidity degree analysis unit and the minimum voltage or maximum capacitance trigger value storage unit regard the descending amplitude of the voltage curve or the ascending amplitude of the capacitance curve as the humidity degree of the electronic humidity sensing absorption article, and send a signal for replacing the electronic humidity sensing absorption article when the numerical value changes to a preset trigger value;

and the discharge duration calculation unit and the discharge longest time trigger value storage unit are used for judging that the discharge time is too long or the moisture absorption locking capacity of the second absorber of the electronic moisture-sensitive absorption article is close to saturation when the curve does not form an effective voltage trough or a capacitance wave crest from the beginning of the timing of one-time effective moisture generation to the preset time trigger value, and accordingly sending a signal for replacing the electronic moisture-sensitive absorption article.

Wherein:

the moisture confirmation voltage trigger value comprises 70% -97% of the original value or peak value of the voltage curve, and when the voltage curve is reduced by 3% -30% from the original value or peak value, the occurrence of effective moisture is confirmed;

the dry recovery voltage trigger value comprises 103-130% of the wave trough value of the voltage curve, and when the voltage curve rises from the wave trough by 3-30%, the dry state of the electronic moisture-sensing absorbent article is confirmed;

the maximum time trigger value for waiting for the drying to be recovered comprises 1 minute to 60 minutes;

the emission maximum time trigger value comprises 10 seconds to 300 seconds;

the moisture number trigger value comprises 1 to 10 times;

the minimum voltage trigger value comprises 10% to 90% of the original voltage value.

The electronic moisture-sensitive absorbing article comprises a moisture-sensitive absorbing article and a moisture-sensitive absorbing article, and is characterized by also comprising an intelligent terminal capable of receiving a Bluetooth signal, wherein the moisture state output unit comprises a Bluetooth or Wi-Fi transceiver and can send a series of voltage peak data information or capacitance value information related to the moisture state of the electronic moisture-sensitive absorbing article to the intelligent terminal through Bluetooth or Wi-Fi; the data information storage unit, the humidity validity confirming unit, the dryness recovery confirming unit, the humidity frequency calculating unit, the humidity frequency trigger value storage unit, the humidity duration calculating unit, the longest time trigger value storage unit waiting for the dryness recovery, the humidity degree analyzing unit, the minimum voltage or maximum capacitance trigger value storage unit, the discharge duration calculating unit and the longest time trigger value storage unit are all arranged in the intelligent terminal, and the related functions are realized in a software and hardware combined mode; or

The humidity state output unit comprises a wireless receiver and a state display, and the humidity state output unit comprises a wireless transmitter which can transmit a series of voltage peak data information or capacitance value information related to the humidity state of the electronic humidity sensing absorption article to the wireless receiver and the state display; the data information storage unit, the moisture validity confirming unit, the dryness recovery confirming unit, the moisture times calculating unit, the moisture times trigger value storage unit, the moisture duration calculating unit, the longest time trigger value storage unit waiting for the dryness recovery, the moisture degree analyzing unit, the minimum voltage or maximum capacitance trigger value storage unit, the discharge duration calculating unit and the longest time trigger value storage unit are all arranged in the wireless receiver and the state display, and the related functions are realized in a software and hardware combination mode.

(III) advantageous effects

Compared with the prior art, the invention provides the electronic humidity saturation paper diaper and the related method, and the electronic humidity saturation paper diaper has the following beneficial effects:

1. according to the electronic humidity saturation paper diaper and the related method, the flexible electrode and the absorption layer for absorbing moisture are arranged on the inner side of the flexible waterproof film of the electronic humidity saturation paper diaper, so that the flexible waterproof film, the flexible electrode and liquid contained in the absorption layer form a variable electrolytic capacitor, and the humidity state of the electronic humidity saturation paper diaper can be obtained only by detecting the capacitance value and the change of the capacitor. In addition, the urine wetness detection device is arranged on the paper diaper which is an application of the electronic humidity saturation paper diaper, the charging and discharging unit is used for carrying out periodic charging and discharging operation on a urine wetness sensing line arranged on the paper diaper to obtain voltage peak data related to the variable capacitance value of the paper diaper and form a curve reflecting the wet state of the paper diaper, and the curve contains various information for judgment, such as whether urine wetness occurs, how long the urine is discharged, how many times the urine is wetted, how the maximum urine wetness degree is, whether the urine is recovered to be dry and the like, so that the urine wetness detection is more diversified, and the detection information is richer. By utilizing the absorbing article and the related method, the humidity condition of the electronic humidity saturation paper diaper can be dynamically, quickly and accurately analyzed and judged, and a reliable basis is provided for the use and the replacement of disposable absorbing articles such as paper diapers and paper diapers.

Drawings

Fig. 1 is a schematic cross-sectional structure view of an electronic wetness saturation diaper in a dry state according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a paper diaper with electronic wetness saturation in a wet state according to an embodiment of the present invention.

FIG. 3 is a schematic sectional view taken along line A-A' of FIG. 2.

Fig. 4 is a schematic cross-sectional structure view of the electronic wetness saturation diaper in the embodiment of the present invention when the electronic wetness saturation diaper recovers to the dry state.

Fig. 5 is a schematic structural view of a paper diaper with electronic wetness saturation comprising a hydrophilic layer according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of an electronic wetness saturation diaper provided with an impermeable coating according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a key part of an electronic wetness-sensitive saturation paper diaper according to an embodiment of the present invention, which influences a capacitance value of a variable electrolytic capacitor.

Fig. 8 is an equivalent structural diagram of a variable electrolytic capacitor of the electronic wetness saturation diaper according to the embodiment of the present invention.

Fig. 9 is a schematic structural view of capacitance detection performed on the electronic wetness sensing saturation diaper in the embodiment of the present invention.

Fig. 10 is a schematic circuit diagram of the electronic wetness sensing saturation detection implemented on the diaper in the embodiment of the present invention.

FIG. 11A is a graph showing voltage curves associated with capacitance values of E-commerce diapers according to one embodiment of the present invention.

Fig. 11B is a graph showing capacitance curves associated with the wetness level of the electronic wetness saturation diaper in the example of the present invention.

Fig. 12 is a schematic diagram of a system for performing urine wetness detection, data transmission and reception and status display on the electronic wetness saturation diaper according to the embodiment of the present invention.

Fig. 13 is a functional block diagram of a urine wetness detecting apparatus in the embodiment of the present invention.

FIG. 14 is a flowchart of a method for making a disposable absorbent article capable of providing dynamic fluid intake process information and absorbent capacity information in accordance with one embodiment of the present invention.

Fig. 15 is a flowchart of a method for implementing moisture analysis and status prompt based on the electronic wetness saturation paper diaper in the embodiment of the present invention.

Fig. 16 is a flowchart of another method for implementing moisture analysis and status indication based on the electronic wetness saturation diaper according to the embodiment of the present invention.

Fig. 17 is an appearance structure and an application schematic diagram of an electronic wetness saturation diaper in an embodiment of the invention.

Fig. 18 is another schematic view of an appearance structure and an application of the electronic wetness saturation diaper in the embodiment of the present invention.

Fig. 19 is another schematic view of an appearance structure and an application of the electronic wetness saturation diaper according to the embodiment of the present invention.

Fig. 20 is another schematic view of an appearance structure and an application of the electronic wetness saturation diaper according to the embodiment of the present invention.

Fig. 21 is an external appearance front view of the urine wetness detecting apparatus in the embodiment of the present invention.

Fig. 22 is an external rear view of a urine wetness detecting apparatus in an embodiment of the present invention.

Fig. 23 is a left side view of the external appearance of the urine wetness detecting device in the embodiment of the present invention.

FIG. 24 is a schematic view of an application of the urine wetness detecting device in the embodiment of the present invention.

Fig. 25 is another schematic structural view of the urine wetness detecting device in the 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.

The invention is further described below with reference to the accompanying drawings. Fig. 1 is a schematic cross-sectional view of an electronic moisture-sensing absorbent article in a dry state according to an embodiment of the present invention.

The illustrated electronic wetness sensation absorbent article 10 includes:

a flexible waterproof film 11;

a strip-shaped parallel line arranged on one surface of the flexible waterproof film 11, a flexible conductive electrode 12 which is mutually separated and insulated from the upper part and the lower part, an upper positive electrode, a middle insulation and a lower negative electrode;

a water-permeable woven fabric layer 18;

the absorption layer 15 is arranged on the other side of the flexible waterproof film 11 and is positioned between the flexible waterproof film 11 and the water-permeable woven fabric layer 18 and is used for absorbing liquid entering from the water-permeable woven fabric layer 18;

the flexible waterproof film 11, the flexible electrode 12 and the liquid contained in the absorption layer may form a special (or generalized) nonpolarity variable electrolytic capacitor, wherein the flexible electrode 12 serves as two electrodes of the electrolytic capacitor, the flexible waterproof film 11 serves as a dielectric of the electrolytic capacitor, the liquid in the absorption layer corresponding to the electrodes serves as an electrolyte (electrolyte) of the electrolytic capacitor, the capacitance value of the electrolytic capacitor is related to the content and distribution of the liquid contained in the absorption layer, and the moisture state of the electronic moisture-sensing absorbent article 10 can be known through detection of the capacitance value of the electrolytic capacitor and analysis of the change rule thereof.

Specifically, the electronic wetness sensation absorbent article 10 is generally referred to as a disposable diaper or diaper, and may also be suitable for use as a paper diaper, sanitary napkin, or other disposable sanitary absorbent article. The flexible waterproof film 11 is usually made of a soft and nontoxic polyethylene film (PE film for short), the commonly used PE film includes a breathable film and a non-breathable film, the breathable film is commonly used for infant diapers, and the non-breathable film is commonly used for adult diapers. One side of the flexible waterproof film 11 is provided with a strip-shaped parallel line, flexible electrodes 12 which are mutually separated and insulated up and down, an upper positive electrode, a middle insulation and a lower negative electrode, wherein the flexible electrodes 12 are usually formed by printing carbon conductive ink on the waterproof film, and can also be formed by compounding materials such as aluminum foil, metal wires or graphite wires on the waterproof film, and the materials have flexibility and do not influence the flexibility and the use of the product. In order to prevent the electrodes from short circuit caused by human body or liquid contacting the electrodes, a flexible insulating protective layer 13 is covered (or compounded) on the flexible electrodes 12, and is usually made of soft and loose non-woven fabric, hot air non-woven fabric or imitation sticky cloth.

The absorbent layer 15 on the other side of the flexible waterproof film 11 includes a first absorbent 16 disposed in close contact with the flexible waterproof film 11, and the main component of the absorbent is a material such as powdery or flocculent cotton pulp, wood pulp, or paper pulp, or may be a fine water storage space formed of a series of fibers or a wool-like woven fabric. The second absorbent 17 is mixed in the first absorbent 16, and its main component is a polymeric water absorbent resin (SAP) material in fine particle form. The water-permeable fabric layer 18 located above the absorbent layer 15 is usually made of a nonwoven fabric having soft water-permeable characteristics, a through-air nonwoven fabric, or the like, and the absorbent layer 15 is sandwiched between the flexible waterproof film 11 and the water-permeable fabric layer 18 and is thus fixed and formed.

Referring to fig. 2, it is a schematic cross-sectional structure diagram of an electronic moisture-sensing absorbent article in a wet state according to an embodiment of the present invention. In the figure, 19 is the liquid (including human or animal excreta such as water, urine, sweat, etc.) applied on the electronic moisture-sensitive absorbent article 10, and the liquid 19 enters the moisture-absorbing layer 15 of the electronic moisture-sensitive absorbent article 10 through the water-permeable woven fabric layer 18 and is first absorbed by the first absorbent 16 of the absorbent layer 15. If the amount of liquid is small, it is absorbed only by the first absorbent 16 on the upper layer (liquid 19 is labeled 191), if the amount of liquid is large, the liquid will reach the lower layer position of the first absorbent 16 (liquid 19 is labeled 192), and below the liquid 192, there is the flexible waterproof membrane 11, and the liquid 192 will not leak downward any more due to the obstruction of the flexible waterproof membrane 11. Since the liquid 192 is tightly attached to the flexible electrode 12, it can form a specific non-polar variable electrolytic capacitor in a broad sense together with the flexible electrode 12 and the flexible waterproof film 11, wherein the flexible electrode 12 serves as two electrodes of the electrolytic capacitor, the flexible waterproof film 11 serves as an insulating dielectric of the electrolytic capacitor, and the liquid 192 (e.g. containing saline urine) serves as an electrolyte of the electrolytic capacitor, and the capacitance value of the variable electrolytic capacitor is related to the liquid content of the first absorbent 16, and the moisture area and the liquid distribution of the first absorbent on the flexible waterproof film 11 corresponding to the flexible electrode 12 are more directly related, and the information of the liquid content or coverage (or distribution) contained in the first absorbent 16 can be known by monitoring the capacitance values at both ends of the flexible electrode 12, which is further described in the following illustration.

Referring to FIG. 3, a cross-sectional view along A-A' of FIG. 2 is shown. The difference from the previous fig. 2 is that in fig. 3 two wet areas, 19A and 19B, respectively, can be seen. Assuming that the capacitance value generated by the capacitor 19A is C19A and the capacitance value generated by the capacitor 19B is C19B, the whole capacitance value of the electronic moisture-sensitive absorbent article 10 is C19A + C19B, i.e., the capacitance value of the variable electrolytic capacitor is in direct proportion to the amount of the moisture area and the size of the moisture range.

Referring to fig. 4, it is a schematic cross-sectional structure diagram of an electronic moisture-sensing absorbent article in the embodiment of the present invention when the electronic moisture-sensing absorbent article returns to a dry state. In the absorbent layer 15, the first absorbent material 16 absorbs moisture faster than the second absorbent material 17, and liquid (for example, urine) entering from the water-permeable woven fabric layer 18 is first absorbed by the first absorbent material 16. The Second Absorbent (SAP)17 contained in the first absorbent 16 has a higher moisture absorption rate than the first absorbent 16, but absorbs water several hundred or even thousand times larger than the first absorbent 16, and locks the water in the SAP, which is a high molecular water absorbent resin. The moisture contained in the first absorbent 16 is reduced by the presence of SAP, which causes the aforementioned moisture contained in the first absorbent 16 to be gradually transferred into the second absorbent 17 and locked. Fig. 4 shows that the moisture 191 in the upper layer of the absorbent layer 15 is absorbed by the second absorber 17, the moisture 192 in the lower layer is greatly reduced, the SAP in the original fine particle form absorbs the moisture, and the absorbent article 10 is expanded to a dry state due to the SAP, and the absorbent article 10 is returned to a dry state. At the same time, the capacitance of the electrolytic capacitor present on the electronic wetness sensation absorbent article 10 across the flexible electrode 12 is significantly reduced from that of fig. 2.

The first absorber 16 may also be made of an absorbent material having a fine water storage space formed of a specific material/fiber, such as a hot air non-woven fabric, a bulky fabric, and a short fiber, and the fine space has a certain water storage capacity, thereby achieving absorption of moisture/liquid. In this case, the fine granular high molecular water absorbent resin can be distributed in the fine water storage space to reabsorb water in the space, so that the water storage space can be changed from a wet state to a dry state.

Referring to fig. 5, it is a schematic structural diagram of an electronic moisture-sensitive absorbent article including a hydrophilic film according to an embodiment of the present invention. In some applications, it may be desirable to have a memory effect on the wet state of the absorbent article, i.e., whether or not the wet area has returned to dryness, the wet state or wetness information is desirably retained by memory, in which case a hydrophilic layer may be added between flexible waterproofing membrane 11 and first absorbent 16 to perform the function. Fig. 5 shows the hydrophilic layer 14, which has a strong moisture absorption and retention capacity and is used for absorbing liquid from the absorbing layer 15 and maintaining the surface area of the liquid covering the flexible electrode 12 unchanged, so that the capacitance value of the electrolytic capacitor remains substantially unchanged. As can be seen from fig. 5, although the moisture content contained in the first absorbent body 16 above the hydrophilic layer 14 is reduced, the moisture content 141 contained in the hydrophilic layer 14 remains substantially unchanged, so that the capacitance value of the electrolytic capacitor present between the flexible electrodes 12 is substantially unchanged. From another perspective, it is believed that the hydrophilic layer 14 enhances the moisture memory effect, i.e., reduces the change in capacitance of the variable electrolytic capacitor from large to small.

Conversely, if it is desired to reduce the moisture memory effect or enhance the change of the capacitance of the variable electrolytic capacitor from a larger value to a smaller value in order to detect whether the electronic moisture-sensitive absorbent article 10 has returned to a dry state, a hydrophobic layer (indicated by the same reference numeral 14 in the figure) may be added between the flexible waterproof film 11 and the first absorbent 16. Due to the fact that the hydrophilic layer or the hydrophobic layer has different performances, the accumulation condition of moisture in the first absorber 16 on the surface of the flexible waterproof film 11 can be influenced, so that the change of capacitance values of the variable electrolytic capacitor can be influenced, different capacitance value change rules can be generated, and different parameter characteristics can be provided to be suitable for different detection function purposes. For an absorbent article with a hydrophobic layer, the liquid entering the water-permeable woven fabric layer 18 can reach the hydrophobic layer 14 to wet the hydrophobic layer if the injection speed is fast. Because the hydrophobic layer is tightly attached to the flexible waterproof film and faces the flexible electrode, the soaking of the hydrophobic layer can increase the capacitance value of the electrolytic capacitor, and the detection of the capacitance value can know whether a large amount of liquid enters or not. Because the hydrophobic layer has poor water-locking capacity, when the absorption layer 15 (especially the second absorber 17 in the absorption layer 15) exerts a water absorption effect, the water soaked on the hydrophobic layer is gradually absorbed by the water absorption layer, so that the water on the hydrophobic layer is reduced, and the capacity value of the electrolytic capacitor is reduced.

In general, the small to large and large to small effect of the electrolytic capacitor is amplified by the presence of the hydrophobic layer 14, which corresponds to the change from dry to wet and then from wet to dry of the electronic moisture-sensitive absorbent article 10. If the total amount of liquid entering the absorbent layer 15 is too great to exceed the absorbent capacity of the absorbent layer 15 and saturate the absorbent layer, the liquid will accumulate on the hydrophobic layer. In this case, the capacitance of the electrolytic capacitor does not decrease after increasing, and it is possible to analytically determine whether the absorption layer has entered the saturation state. As for the electronic moisture-sensitive absorbing article 10 having the hydrophilic layer 14, the capacitance change rule is more nearly increased in one direction because it is easy to change from dry to wet and is difficult to dry from wet, and the capacitance change from small to large is more obvious and the capacitance change from large to small is not obvious. Therefore, the adjustment of the capacitance value change rule can be realized by selectively arranging a hydrophilic layer or a hydrophobic layer. In practical applications, the hydrophilic layer includes any one or any combination of a hydrophilic material layer, a hydrophilic film, hydrophilic fibers and a hydrophilic coating, such as toilet paper, cotton or other hydrophilic fibers/coatings with good water absorption performance. The hydrophobic layer comprises non-woven fabrics or other hydrophobic fibers, films, coatings and the like.

Referring to fig. 6 again, it is a schematic structural diagram of an electronic moisture-sensing absorbent article including an impermeable coating according to an embodiment of the present invention. In practical applications, the flexible waterproof film 11 has a certain air permeability, and particularly, the absorbent article for baby diapers usually uses a waterproof and air permeable polyethylene film (PE film) as the flexible waterproof film, which is waterproof and has a certain air permeability, and is comfortable to wear. Although the flexible waterproof film 11 having the air permeability does not allow liquid to flow out, the permeated water vapor may short-circuit the flexible electrode 12 printed on the flexible waterproof film 11, which affects the capacitance value between the two electrode terminals. In order to prevent the liquid leakage from shorting the flexible electrodes 12, in fig. 6, on the other side of the flexible waterproof film 11 corresponding to the electrodes 12, a barrier coating 11A is included, which may be printed with waterproof ink at the corresponding position to prevent the moisture on the hydrophilic layer 14 from passing through the flexible waterproof film 11 and causing a short circuit between the flexible electrodes 12. The waterproof ink comprises gravure surface printing ink, and the ink can contain some waterproof agents, such as fluorocarbon resin, fluorocarbon high polymer, acrylic waterproof paint, polyurethane waterproof paint and the like, so that the waterproof effect is better.

Referring to fig. 7, it is a schematic structural diagram of a key portion of an electronic moisture-sensitive absorbing article according to an embodiment of the present invention that affects a capacitance value of a capacitor. In the figure, 121 and 122 are two left and right electrodes (both belonging to the electrode 12), 111 and 112 are flexible waterproof films tightly attached to the

electrodes

121 and 122, 141/192 is liquid tightly attached to the flexible waterproof film 11 and near the

electrodes

121 and 122, which form the aforementioned broadly non-polar variable electrolytic capacitor, wherein 121 and 122 form electrodes of the electrolytic capacitor, the flexible

waterproof films

111 and 112 form insulating dielectric of the electrolytic capacitor, 141/192 (for example, urine containing salt) is used as electrolyte/electrolyte of the electrolytic capacitor, the capacitance value of the variable electrolytic capacitor is related to the contact area of the electrolyte 141/192 and the flexible waterproof film 111/112, and the information of the liquid content/coverage area contained in the first absorbent 16, especially the hydrophilic layer/14 can be known by monitoring the capacitance values at both ends of the flexible electrode 12, and the change in the liquid in the first absorbent 16 can be dynamically reflected in the change in the capacitance value of the variable electrolytic capacitor, the quantified wetness state being known by detecting the capacitance value of said electrolytic capacitor.

Referring to fig. 8, it is a schematic diagram of an equivalent structure of a variable electrolytic capacitor of an electronic moisture-sensitive absorbent article according to an embodiment of the present invention. In the figure, 121 and 122 are positive and negative electrodes of the variable electrolytic capacitor formed by the

flexible electrode

12, 111 and 112 are dielectrics (equivalent to metal oxide films of a conventional electrolytic capacitor) formed by the flexible waterproof films 11 and closely attached to the

flexible electrodes

121 and 122, and 141 and 192 are electrolytes (for example, urine containing salt) adhered and covered on the flexible

waterproof films

121 and 122. If a positive voltage is applied to flexible electrode 121 and a negative voltage is applied to flexible electrode 122, positive and negative charges are respectively generated on

electrodes

121 and 122, and the positive and negative charges attract ions with opposite polarity in electrolyte 141/192 to accumulate on the other side of flexible waterproof film 111/112, so that a capacitance effect similar to that of a conventional electrolytic capacitor is generated, and two equivalent series electrolytic capacitors Ca and Cb are formed. In Ca, the flexible electrode 121 is a positive electrode and the electrolytic solution 141/192 is a negative electrode, which is the same as a conventional electrolytic capacitor. In Cb, the electrolyte 141/192 is a positive electrode, and the flexible electrode 122 is a negative electrode, unlike the case of the conventional electrolytic capacitor in which the electrolyte is a negative electrode. However, if a positive voltage is applied to the flexible electrode 122 and a negative voltage is applied to the flexible electrode 121, the reverse will be true, and the case of Cb is the same as that of the conventional electrolytic capacitor, while Ca is different from that of the conventional electrolytic capacitor.

The core of the electrolytic capacitor is that an electrolyte/electrolyte is used as an electrode of the capacitor, and the electrolyte of the traditional electrolytic capacitor is a negative electrode because a metal oxide film used as a dielectric has unidirectional conductivity, and if a voltage is applied in reverse, a serious leakage phenomenon is caused. If the dielectric does not have unidirectional conductivity, the electrolyte can serve as either the negative or positive electrode of the capacitor, so that the electrolytic capacitor can be made non-polarized. The variable electrolytic capacitor according to the embodiment of the present invention is a case in which no leakage phenomenon occurs regardless of whether a positive voltage or a negative voltage is applied, and the capacitance value is the same. The variable electrolytic capacitor in the embodiment of the present invention can be regarded as a development and supplement to the conventional electrolytic capacitor, and thus the variable electrolytic capacitor of the present invention can be referred to as a special electrolytic capacitor in a broad sense.

Referring to fig. 9, it is a schematic structural diagram of the electronic moisture-sensitive absorbent article for capacitive detection according to an embodiment of the present invention. In order to monitor the usage, liquid absorption and absorption capacity change of the electronic moisture-sensitive absorbent article 10, a capacitance detection device 20 is included in fig. 9, and the capacitance detection device is connected to the flexible electrode 12 of the electronic moisture-sensitive absorbent article 10, so that the capacitance change at both ends of the flexible electrode 12 can be monitored in real time, and the change of the capacitance is known, wherein the liquid enters from the water-permeable woven fabric layer 18, is absorbed by the first absorbent 16, and is absorbed and locked by the second absorbent 17, so that the electronic moisture-sensitive absorbent article 10 changes from dry to wet and then from wet to dry. For electronic moisture-sensitive absorbent articles equipped with a hydrophilic layer having a moisture memory effect, the capacitive detection is mainly used to monitor whether moisture occurs, how the moisture level/area/range is, etc., and generally cannot reflect whether the absorbent article has returned to a relatively dry state.

Referring to fig. 10, it is a schematic diagram of a capacitance detection circuit of the electronic moisture-sensitive absorbent article according to an embodiment of the present invention. The capacitance detection device 20 is shown connected to the electronic wetness sensing absorbent article 10 by flexible electrodes 121,122. The electronic moisture-sensitive absorbing article 10 includes a variable capacitor 21(C, which is an equivalent capacitance after the series connection of Ca and Cb), and the capacitor C mainly includes a flexible electrode 12, a flexible waterproof film 11, and a liquid (electrolyte) contained in the first absorber 16/hydrophilic film 14. The more liquid contained in the first absorbent 16/hydrophilic film 14, the larger the area of the liquid corresponding to the flexible electrode, the larger the capacitance value of the electrolytic capacitor, and the moisture condition of the electronic moisture-sensitive absorbent article 10 and the condition of whether the absorption capacity is close to saturation can be known by detecting the capacitance C and analyzing the change of the capacitance value.

The capacitance detection device 20 includes a charging unit 23 (current source I), a discharging unit 24 (electronic switch K), and a voltage detection unit 25, which can realize periodic charging and discharging and voltage measurement operations of the capacitance C of the electronic wetness sensing absorbent article 10 through the flexible electrode 12 (including 121 and 122), so as to detect the capacitance value of the capacitance C. Assuming that the charging current is I, the charging time is T, and the voltage across the capacitor C before charging is 0, the following calculation formula is obtained:

C-Q/V-I × T/V, i.e.: v is I multiplied by T/C

As can be seen from the above formula, the voltage across the flexible electrode 12 increases with time during the charging process, and when the time reaches T (i.e., the end-of-charge time), the voltage value is maximum (V), which is referred to as the peak voltage of one charging cycle. The value of the peak voltage V is inversely proportional to the capacitance value C in the electronic wetness sensing absorbent article 10, and the more the liquid (electrolyte) 141/192 in the electronic wetness sensing absorbent article 10 is, the larger the wetness area is, the larger the capacitance value of the capacitance C is, and the lower the voltage value V obtained by calculating the formula V ═ I × T/C is. Thus, by detecting the voltage V, the magnitude of the capacitance C can be known, and hence, how wet the electronic wetness sensing absorbent article 10 is/is.

After charging to V and reading the value of V, the discharge unit 24(K) in the circuit is switched on, which short-circuits the

electrodes

121, 122, the capacitor C is discharged to a voltage of 0 through the electronic switch K, then waits for the start of the next charging cycle, then K is switched off again, and the charging unit 23 is recharged again, thus obtaining the next charging peak voltage V. Through the periodic charge and discharge operations, a series of peak voltage V data information varying with time may be obtained. In practical application, one-time charging and discharging operation can be carried out within one second, namely, the capacitance value of the one-time absorption article 10 presented at the two ends of the electrode 12 is detected within one second, so that the moisture condition monitoring of the one-time one-second absorption article is realized.

The capacitance detection implemented by the dc charging and discharging method described in fig. 10 is a common method, but in practical applications, there are many methods of capacitance detection, including applying an ac voltage or an ac current across the electrodes to obtain a capacitance value. The above-described fig. 10 may be considered as an illustration of one of the ways of capacitance detection and not as a limitation of the capacitance detection of the present invention.

Referring to fig. 11A, a voltage curve diagram of an embodiment of the present invention, which is inversely proportional to the capacitance of the electronic wetness sensation absorbent article, is shown. The horizontal axis of the coordinate in the figure is time t, the vertical axis is voltage V, and the voltage V is composed of a series of voltage peak value V data generated by periodic charging and discharging in figure 10. Assuming that the electronic wetness sensing absorbent article 10 is a diaper, the peak voltage of the electronic wetness sensing absorbent article in the original state (T0) is V0, which corresponds to the original dry state, and the voltage value is the highest in the whole curve, which represents the smallest capacitance value C corresponding to the diaper (the electrolytic capacitance value is substantially 0, and a smaller dielectric capacitance value appears at the two ends of the flexible electrode 12 in the absence of the electrolyte). When a urine-wet condition occurs (e.g. urine), an electrolytic capacitance effect begins to appear, the capacitance value of the capacitor C begins to become larger, and the corresponding voltage value V begins to become smaller. With the original value V0 as a reference point, when the voltage drops to a certain value (e.g., V1, which is assumed to be 70% -97% of V0, i.e., 3% -30% drop from the original value V0) at a certain time point (T1), it can be considered that the electronic moisture-sensitive absorbent article 10 is wet with urine, or its wet state is confirmed.

The process of urinating will be firstly shown in the increase of the urine content in the first absorbent 16, and after the urinating stops, the moisture in the first absorbent 16 will be gradually transferred into the second absorbent 17(SAP) and effectively locked because of the strong moisture absorption capacity of the SAP, so as to make the moisture in the first absorbent 16 decrease and make the corresponding capacitance value C smaller, and finally make the periodic charge-discharge peak voltage V generated by the capacitance detecting device 20 at both ends of the flexible electrode 12 increase and form a valley in the curve. Assuming that the voltage at time T2 is at the trough value V2, the voltage at time T3 is at V3, and V3 is greater than V2 by a certain amount (e.g., 3% -30% greater, i.e., V3 is 103% -130% of V2), it is believed that the process of urination at time T2 at the trough time T2 has stopped, and the article 10 has recovered to a relatively dry state at time T3, or the second absorbent 17 has not reached its capacity to absorb more water thereafter.

As time progresses, the moisture in the first absorbent 16 further decreases and the curve continues to rise after T3 until another peak V4 is reached at time T4. the peak voltage V4 is lower than the original peak V0 because the article was wetted with urine and was unable to return to the original dry state. If the user urinates again at this time, the curve will decrease again, and when the curve decreases to the time point of T5, the voltage value V5 decreases by 3% -30% compared with the peak value V4 (i.e. V5 is 70% -97% of V4), and the electronic moisture-sensitive absorbent article 10 can be considered to be wet again, i.e. a new wet condition is confirmed again. The above steps are repeated until the liquid reaches another trough at T6/V6, returns to dry state again at T7/V7, reaches another peak at T8/V8, confirms that one time of urine wetting occurs again at T9/V9, and reaches another trough at T10/V10. In contrast to the foregoing, after T10, the curve does not rise, indicating that the second absorbent member 17 is saturated and that the absorbent article 10 must be replaced.

In practical application, whether the electronic moisture-sensitive absorbent article needs to be replaced or not has a plurality of different judgment standards, which represent different moisture states. The curve contains various information for discrimination, specifically including whether or not urine wetting occurs, how long it has occurred, how long urine (liquid discharge) has occurred, how many times urine has been wetted, how large the maximum urine wetting degree is, whether or not dryness has been restored, whether or not the liquid absorber has reached a saturated state, and the like, which will be described in detail in the following legend.

Referring to fig. 11B, a capacitance curve diagram related to the wetness level of the electronic wetness sensing absorbent article in the embodiment of the present invention is shown, which is a curve corresponding to fig. 10 but with an inverse change rule. The horizontal axis of the coordinate in the figure is time t, the vertical axis is capacitance value C, which is composed of capacitance value data related to the moisture degree of the electronic moisture-sensitive absorbing article obtained by periodic charging and discharging (or by other means) in figure 10. Assuming that the absorbent article 10 is a diaper, the original capacitance value C0 in the original state (T0) corresponds to the original dry state, and the capacitance value is the smallest throughout the curve. When a urine-wet condition occurs (for example, urine), the electrolytic capacitance effect will start to occur, so that the capacitance value of the capacitor C becomes larger. With the original value C0 as a reference point, when the capacitance rises to a certain value (e.g., C1) at a certain time point (T1), the electronic wetness sensing absorbent article 10 is considered to be wetted by urine, or its wet state is confirmed.

The process of urination is first shown by an increase in the amount of urine in the first absorbent 16, and after urination has ceased, the water in the first absorbent 16 is gradually transferred to the second absorbent 17(SAP) and locked in place due to the strong water-absorbing capacity of the SAP, causing the water in the first absorbent 16 to drop and its corresponding capacitance C to decrease, forming a peak in the curve. Assuming that the capacitance at time T2 is at the peak value C2, the capacitance at time T3 is at C3, and C3 has decreased from C2 by a certain amount, it is assumed that the urine process has stopped at time T2 and the article 10 has returned to a relatively dry state at time T3, or the second absorbent 17 has not reached saturation and is then able to absorb more water.

As the moisture content of the first absorbent 16 further decreases over time, the capacitance curve continues to decrease after T3 until a valley value C4 is reached at time T4, the valley capacitance value C4 is greater than the original valley value C0 because the moist absorbent article was wetted with urine and failed to return to the original dry state. If the user urinates again at this time, the curve will rise again, and when the curve rises to the time point T5, the capacitance C5 rises to a certain extent compared with the wave bottom C4, and the electronic moisture-sensitive absorbent article 10 is considered to be wet again, i.e. a new wet condition is confirmed. This was repeated until the peak was reached at T6/C6, the dryness was again restored at T7/C7, the trough was again reached at T8/C8, the occurrence of urine wetting was again confirmed at T9/C9, and the peak was again reached at T10/C10. In contrast to the foregoing, after T10, the curve does not drop, indicating that the second absorbent member 17 is saturated, and the absorbent article 10 must be replaced.

In practical application, whether the electronic moisture-sensitive absorbent article needs to be replaced or not has a plurality of different judgment standards, which represent different moisture states. The curve contains various discriminative information including whether or not urine wetting has occurred, how long it has occurred, how long urine (liquid discharge) has occurred, how many times urine has been wetted, how much the maximum urine wetting degree has been reached, whether or not dryness has been restored, whether or not the liquid absorbent has reached a saturated state, and the like, which will be described further in the following figure.

Referring to fig. 12, it is a schematic diagram of a system for performing a urine wetness detection, data transmission and reception and status display on a disposable paper diaper with a variable capacitance type electronic moisture saturation according to an embodiment of the present invention. The absorbent article 10 in the figure is a disposable diaper, and the diaper 10 includes urine-wet sensing lines (sensing line electrode ends) 121 and 122, which can sense the urine-wet condition of the

diaper

10, and 19 in the figure is the range/area of the diaper 10 wetted by urine. The urine wetness sensing line is connected to the capacitance detecting device 20, the capacitance detecting device 20 may also be referred to as a urine wetness detecting device, a urine wetness sensor or a sensor device, the urine wetness detecting device 20 includes a wireless transmitter/unit (e.g. a low power wireless, bluetooth transceiver, Wi-Fi transceiver, etc.) and can transmit a data signal related to urine wetness to the intelligent terminal 30 (or a wireless receiver and a status indicator) through the wireless signal 22, the intelligent terminal 30 processes the data signal and extracts urine wetness information included in the data, including information such as whether urine wetness occurs, how long urine has occurred, how many times urine has been wet, how dry the maximum urine wetness has been recovered, whether the moisture absorption layer/absorber has reached a saturated state, etc., and displays the related information on the intelligent terminal 30 (or the wireless receiver and the status indicator), the capacitance detection device 20 is in signal connection with a flashing light 40 and signals the change of the diaper/absorbent article when appropriate.

Referring to fig. 13 again, this is a functional block diagram of a urine wetness detecting device in the embodiment of the present invention. The electronic moisture-sensing absorbent article 10 (e.g. an electronic moisture-sensing saturation diaper) is shown in the figure, the electronic moisture-sensing absorbent article 10 includes a variable capacitor C mainly composed of a flexible electrode 12, a flexible waterproof film 11 and a liquid (electrolyte) in a first absorber 16 or a hydrophilic layer 14, the variable capacitor C is connected to a urine wetness detecting device 20 through the flexible electrode 12, the urine wetness detecting device 20 includes a charging and discharging unit 26, a digital-to-analog converting unit 27 and a processor 28, the processor 28 controls the charging and discharging unit 26 to perform periodic charging and discharging operations on the capacitor C, and obtains voltage peak value data (or calculates a capacitance value) generated by charging through the digital-to-analog converting unit 27. Further, the urine wetness detecting device 20 further comprises a wetness state output unit 29, which can output data information related to the wetness state of the electronic wetness sensing absorbent article 10 by means of low power wireless, bluetooth, Wi-Fi and the like, or locally by means of sound and light alarm.

The wireless signal sent by the wetness state output unit 29 is received by the wireless receiving unit 31 in the wireless receiver and status indicator 30, and the related data is stored in the data information storage unit 32, so that the series of data information can be combined into a voltage curve (or capacitance curve) related to the wetness state of the electronic wetness sensing absorbent article 10.

In order to analyze and determine the curve to obtain the relevant status information, a moisture validity confirming unit 33 and a dryness restoration confirming unit 34 are further included in fig. 13, where the moisture validity confirming unit 33 includes a preset moisture confirmation voltage (or capacitance) trigger value, and when the voltage curve drops from an original value or a certain peak value to a preset trigger value (for example, drops by 3% -30%) (or the capacitance curve rises from the original value or a valley value to the preset trigger value), it can be confirmed that the absorbent article 10 is wet by urine, or a moisture status is confirmed once; the dryness recovery confirming unit 34 includes a preset dryness recovery voltage (or capacitance) trigger value, and when the curve change reaches the preset trigger value, the dryness state of the electronic moisture-sensitive absorbent article can be confirmed.

Further, the wireless receiver and status indicator 30 further includes a wetness number calculating unit 35 and a wetness number trigger value storing unit 36, which can calculate the number of times the electronic wetness-sensitive absorbent article is wetted (the number of wet urination times, for example, in the curves shown in fig. 11A and fig. 11B, three occurrences of wet urination T1, T5, and T9 can be confirmed), and when the number of wet times reaches a preset trigger value (for example, 1 to 10 times), a signal for replacing the absorbent article 10 is sent through the status displaying unit 38.

Further, the wireless receiver and status indicator 30 further includes a wet time period calculating unit 41 and a maximum time trigger value waiting for dry recovery storage unit 42, which are configured to start timing from a time when a wet state is confirmed (e.g., T9 in fig. 11A), and if the electronic wetness sensing absorbent article 10 does not return to the dry state after waiting for a predetermined time trigger value (i.e., the maximum time trigger value waiting for dry recovery, e.g., 1 minute to 60 minutes, from T9 to T11 in fig. 11A), the electronic wetness sensing absorbent article 10 is considered to have reached the saturated state, and a signal for replacing the absorbent article 10 is sent through the status display unit 38.

Further, a moisture level analyzing unit 43 and a minimum voltage (or maximum capacitance) trigger value storage unit 44 are also included in the wireless receiver and status indicator 30, and when the voltage curve drops from the original value to the minimum voltage trigger value (e.g., 10% to 90% of the original value; such as V10 in fig. 11A) (or the capacitance curve rises from the original value to the maximum capacitance trigger value, e.g., C10 in fig. 11B), it is considered that the electronic wetness sensing absorbent article 10 has reached the maximum moisture level, and a signal for replacing the absorbent article 10 can be sent through the status display unit 38.

Further, the wireless receiver and status indicator 30 further includes a liquid discharge duration calculation unit 45 and a liquid discharge maximum time trigger value storage unit 46, and when the time from when a moisture occurrence is confirmed to when the trigger value is reached (for example, 10 seconds to 300 seconds) and the curve does not yet form an effective voltage valley (or capacitance peak), it can be considered that the liquid discharge duration is too long (i.e., the urine absorption duration is too long), which causes the electronic wetness sensitive absorbent article to enter a saturated state, and at this time, a signal for replacing the absorbent article 10 can be sent through the status display unit 38.

Also included in the wireless receiver and status indicator 30 is a processor 48, which may include modules for controlling and implementing the functions of the wireless receiver and status indicator 30. In practical applications, the wireless receiver and the status indicator 30 may also be implemented by using an intelligent terminal 30 in combination with an application App, that is, the data information storage unit, the moisture validity confirmation unit, the dryness restoration confirmation unit, the moisture times calculation unit, the moisture times trigger value storage unit, the moisture duration calculation unit, the longest time trigger value storage unit waiting for the dryness restoration, the moisture degree analysis unit, the minimum voltage (or maximum capacitance) trigger value storage unit, the liquid discharge duration calculation unit, the longest liquid discharge time trigger value storage unit, and the like are all disposed in the intelligent terminal 30. In this case, the wet status output unit 29 will include a bluetooth transceiver or a Wi-Fi transceiver, etc. that can communicate with the smart terminal 30.

Referring to fig. 14, a flow chart of a method for manufacturing a disposable absorbent article capable of providing information on dynamic liquid absorption process and absorption capacity according to an embodiment of the present invention is shown, which is a summary of the method and apparatus described in fig. 1-13. The method flow comprises the following steps:

step S1401 is to select a flexible waterproof film as a substrate;

step S1402 is to arrange a strip-shaped parallel line on one side of the waterproof film, a flexible electrode which is separated and insulated from each other up and down, an upper positive electrode, a middle insulation and a lower negative electrode;

step S1403, a flexible insulating layer is covered on the electrode;

step S1404 is to provide a first absorber on the other surface of the waterproof film at a position corresponding to the electrode;

step S1405 is to provide a second absorber above or mixed in the first absorber, the second absorber having strong moisture absorbing ability and locking ability;

step S1406 is to cover a layer of water-permeable woven fabric on the upper layer of the first and second absorbers, so that the first and second absorbers are fixed between the waterproof film and the water-permeable woven fabric;

step S1407 is to form a disposable absorbent article which can be impregnated with liquid from the water-permeable woven fabric layer, and which can be absorbed by the first absorbent, and then absorbed and locked with moisture from the first absorbent by the second absorbent, while preventing liquid leakage by the waterproof film;

step S1408 is to form a nonpolarity variable electrolytic capacitor related to the moisture content in the first absorber by the flexible electrode, the waterproof film and the first absorber, and the process that the liquid enters the first absorber from the permeable woven fabric layer, and then the second absorber absorbs and locks the moisture can be dynamically reflected to the capacitance value change of the capacitor;

step S1409 is to arrange a material layer or coating having specific hydrophilic or hydrophobic properties between the waterproof film and the first absorber and tightly attached to the waterproof film, where the hydrophilic/hydrophobic properties of the material are different and may affect the accumulation and distribution of moisture of the first absorber on the surface of the waterproof film, thereby affecting the change of capacitance value and generating different capacitance change rules.

Referring to fig. 15 again, it is a flowchart of a method for implementing moisture analysis and status prompt based on the electronic moisture-sensitive absorbent article according to an embodiment of the present invention, where the method includes the following steps:

step S1501, performing periodic charging and discharging on an electrode of the electronic wetness sensing absorbent article to obtain a series of voltage (or capacitance) information related to capacitance values appearing at two ends of the electrode, where the voltage (or capacitance) information data forms a dynamic information curve (voltage or capacitance curve) including the wetness state of the electronic wetness sensing absorbent article;

step S1502, analyzing the curve, and finding out information of each wave peak value and each wave trough value in the curve;

step S1503 is to preset a moisture confirmation voltage (or capacitance) trigger value;

step S1504 is to determine that one effective moisture occurs when the voltage curve decreases from the peak value (or the capacitance curve increases from the valley value) and reaches the preset trigger value;

step S1505 presets a trigger value for recovering the dry-state voltage (or capacitance);

step S1506 is to determine that the electronic wetness sensation absorption article has recovered to a dry state when the voltage curve rises from a valley value (or the capacitance curve falls from a peak value) and reaches the preset trigger value;

step S1507 is to preset a wet number trigger value;

step S1508 is sending a signal to replace the electronic moisture-sensitive absorbent article when the number of times of occurrence of the effective moisture reaches the preset trigger value.

Referring to fig. 16 again, it is a flowchart of another method for implementing moisture analysis and status indication based on the electronic moisture-sensitive absorbent article according to an embodiment of the present invention, where the method includes the following steps:

step S1601 is to preset a minimum voltage (or maximum capacitance) trigger value;

step S1602 regards the voltage curve falling (or capacitance curve rising) as the moisture degree of the electronic moisture-sensitive absorbent article, and when the voltage represented by the curve falls to the minimum voltage trigger value (or the capacitance represented by the curve rises to the maximum capacitance trigger value), it is determined that the electronic moisture-sensitive absorbent article has reached the maximum moisture degree, and accordingly a signal for replacing the electronic moisture-sensitive absorbent article is sent;

step S1603 is to preset a longest time trigger value for waiting for the drying recovery;

step S1604, when the voltage curve cannot be restored to the dry state within the preset time in the trough (or the capacitance curve in the peak), determining that the moisture absorption locking capacity of the second absorber is close to saturation, and accordingly sending a signal for replacing the electronic moisture-sensitive absorbent article;

step S1605, presetting a liquid discharge (urinating) longest time trigger value;

in step S1606, when the effective voltage trough (or the capacitance peak) is not formed yet after the occurrence of the effective moisture reaches the preset time trigger value, it is determined that the liquid discharge time is too long, or the moisture absorption locking capability of the second absorber is close to saturation, and a signal for replacing the electronic moisture absorption article is sent accordingly.

Referring to fig. 17, it is a schematic view of an appearance structure and an application of an electronic wetness saturation diaper according to an embodiment of the present invention. The paper diaper 10 is a specific application of the electronic moisture-sensitive absorbing article, a flexible electrode 12 formed by printing conductive ink is arranged on the paper diaper 10, the flexible electrode is also called a urine-moisture sensing line or a sensing line electrode, the urine-moisture sensing line 12 spans the whole paper diaper 10 from the front abdomen part of the paper diaper 10 to the back waist part of the paper diaper 10, and therefore urine moisture occurring at different positions of the front and back of the paper diaper 10 can be sensed. A front abdominal portion 102 is provided at the front abdominal portion of the diaper 10, and the front abdominal portion 102 is usually made of a hook and loop fastener material to facilitate the attachment and tightening of the waist of the diaper 10.

In the embodiment of the present invention, the front adhesive bandage 102 is also used for adhering a urine-wet detecting device 200 for performing capacitive detection, so that the urine-wet state of the diaper 10 can be monitored in real time. In the urine wetness detecting apparatus 200, a movable latch 202 is included, which can clamp a part of the diaper including the urine wetness sensing wire 12 and electrically connect with the sensing wire electrode 12 to detect the capacitance value of the generalized electrolytic capacitor composed of the diaper electrode 12, the waterproof film 11 and urine (electrolyte), and the dynamic urine wetness state change is known through the capacitance value change, thereby realizing the quantitative urine wetness detecting function. In order to facilitate the clamping of the urine wetness sensor 200 on the urine wetness sensing line 12 of the diaper, the two sides of the urine wetness sensing line 12 at the front abdomen of the diaper 10 include two notches 105, and due to the existence of the notches 105, the urine wetness sensing line 12 at the middle part of the notch can be conveniently turned over and electrically connected with the urine wetness detecting device 200, thereby realizing the electronic wetness sensing function.

Referring to fig. 18, it is another schematic view of an appearance structure and an application of an electronic moisture saturation diaper according to an embodiment of the present invention, which is further described with reference to fig. 17. In fig. 18, it can be seen that the urine wetness sensing line 12 on the front abdominal portion of the diaper 10 can be turned over due to the existence of the cut 105 and clamped by the movable lock 202 of the urine wetness detecting device, and then can be electrically connected with the urine wetness detecting device 200, thereby achieving the electronic wetness sensing function.

Referring to fig. 19, it is another schematic view of an appearance structure and an application of the electronic moisture saturation sensing diaper according to an embodiment of the present invention, which is a variation and innovation of the electronic moisture saturation sensing diaper 10 described in fig. 17. Unlike the diaper shown in fig. 17, which includes two cuts 105 for facilitating the turning of the urine wetness sensing line 12, the diaper shown in fig. 19 includes a protruding portion 108 at the front abdominal sensing line position for facilitating the turning of the protruding portion 108, and is electrically connected to the urine wetness detecting device 200, so as to achieve the electronic wetness sensing function.

Referring to fig. 20, it is another schematic view of an appearance structure and an application of an electronic moisture saturation diaper according to an embodiment of the present invention, which is further described with reference to fig. 19. In fig. 17, it can be seen that the urine wetness sensing line 12 on the front abdominal portion of the diaper 10 can be turned over due to the presence of the protrusion 108, clamped by the movable lock 202 of the urine wetness detecting device, and then electrically connected to the urine wetness detecting device, thereby achieving the electronic wetness sensing function.

Referring to fig. 21, it is an appearance front view of a urine wetness detecting device according to an embodiment of the present invention. The urine wetness detecting device 200 is shown as a front cover 201 and a movable fastener 202, which can be opened to clamp the wetness sensing line of the diaper, and these functions are described in the foregoing fig. 17-20.

Referring to fig. 22 again, it is a rear view of the urine wetness detecting device in the embodiment of the present invention. In the drawing, 200 is a urine wetness detecting device, a bottom case 203 can be seen in a rear view, and a magic tape 204 is included on the bottom case 203, so that the urine wetness detecting device 200 can be adhered and fixed on the front belly patch/magic tape 102 of the paper diaper 10, so as to facilitate the urine wetness detection of the paper diaper 10. Also visible in the figure is the inclusion of an open shell structure 205, by means of which 205 the front shell 201 can be separated/opened from the bottom shell 203 to facilitate the replacement of the button cell placed under the bottom shell.

Referring to fig. 23 again, it is a left side view of the urine wetness detecting device in the embodiment of the present invention. In the drawing, 200 is a urine wetness detecting device, in which a front cover 201 and a bottom cover 203 are seen in a left side view, and the front cover and the bottom cover are combined to form a sealing body, an electronic circuit board is included in the sealed space of the sealed body to perform related functions including capacitance detection and urine wetness detection, and the charging unit 23 (current source I), the discharging unit 24 (electronic switch K), the voltage detecting unit 25, and the charging and discharging unit 26, the digital-to-analog conversion unit 27, the processor 28 and the moisture state output unit (including a wireless transmitter/unit, a bluetooth transceiver, a Wi-Fi transceiver) included in the urine wetness detecting device 20 in fig. 13 can be disposed on the electronic circuit board, so as to realize the functions of relevant capacitance/urine wet detection, data processing, signal analysis, signal transmission and output and the like.

In practical applications, button cells are used to power the relevant electronic components/units/devices on the circuit board, and there is a need to open the front and bottom cases so that the user can replace the batteries inside. In order to open the front case and the bottom case, an open case structure 205 is further included in the drawing, and the key of the open case structure 205 is an open case groove through which a force can be applied to open/separate the front case and the bottom case, so as to facilitate the battery replacement operation of a user.

Fig. 23 further includes a movable buckle 202 attached to the front cover 201, wherein one end of the movable buckle 202 includes a rotating shaft 206, which connects the front cover 201 and the movable buckle 202 together and enables the other end of the buckle to be opened at least 90 degrees, so that the urine-wet sensing line of the diaper can be conveniently clamped and locked between the front cover 201 and the movable buckle 202.

Referring to fig. 24, it is a schematic view of an application of the urine wetness detecting device 200 according to the embodiment of the present invention. In the figure, 201 is a panel case, and 202 is a movable lock catch opened by 90 degrees around a rotating shaft 206. The movable lock catch 202 comprises a convex part 207 and the face shell 201 comprises a groove 208 corresponding to the convex part 207, and when the lock catch 202 is closed, the convex part 207 and the groove 208 are matched with each other to lock the movable lock catch.

After the movable latch 202 is opened, the 4

probes

211, 212, 213 and 214 disposed on the front shell are visible, and the probes are mainly used for electrically connecting with the urine sensing lines 12 (including 121 and 122). In this embodiment, 4 probes are used instead of 2 probes to connect with the urine-wet sensing line, mainly to achieve the function of clip detection, that is, to detect whether the movable lock catch clamps the diaper or the diaper, and whether the probes are in effective contact with the urine-wet sensing line. In the probe, at least 2 probes are used for the clip detection, when the 2 probes are simultaneously contacted with the same urine wet sensing line (such as 211, 212 are simultaneously contacted with 121, or 213, 214 are simultaneously contacted with 122), the probe is connected with the other end of the probe

The clip detection unit on the electronics detects the associated status and signals the clip and illuminates the associated LED indicator to provide an indication of the clip status.

In practical applications, the urine wetness detecting device 200 may adopt a waterproof design of a sealing ring, wherein the sealing ring includes a shell sealing ring, and the shell sealing ring is located between the face shell and the bottom shell to realize a sealing function between the face shell and the bottom shell; and the probe sealing ring is positioned between the probe and the surface shell to realize the sealing function between the probe and the surface shell. Due to the waterproof design, the sensor device can be conveniently cleaned and disinfected.

Because the urine wetness detecting device 200 is applied by being attached to the front belly attachment part of the paper diaper, in practical application, a sleeping posture detecting unit can be added in an electronic circuit board of the urine wetness detecting device 200 to realize the sleeping posture detection of a user (such as an infant) of the paper diaper. Infant sleeping posture detection is valuable in practical applications because studies have shown that Sudden Infant Death Syndrome (SIDS) is related to the sleeping situation of infants, and european and american countries advocate avoiding infants (especially infants of 0-6 months) from the end of the twentieth century to reduce the occurrence of sudden infant death syndrome.

In practical application, the sleeping posture detection unit can be formed by a gravity acceleration Sensor (G-Sensor). When the baby lies on the back, the urine wet detection device 200 enables the surface shell to face upwards, the axis of the Z surface of the gravity acceleration sensor faces upwards, and the axis outputs a signal with the upward axis; when the baby lies prone to sleep, the urine-wet detection device enables the face shell to face downwards, the axis of the Z face of the gravity acceleration sensor faces downwards, and the axis of the Z face of the gravity acceleration sensor outputs a signal with the axis facing downwards, so that the sleeping posture of the baby can be identified, and a related prompt/alarm signal is sent out.

In addition, the embodiment of the present invention can also place more functions related to the urine wetness detection of the diaper 10 in the urine wetness detecting device 20, or integrate with the wireless receiver and the status indicator 30 to form a device with more complete functions, so that the urine wetness detecting device 20 includes the data information storage unit, the moisture validity confirming unit, the dryness recovery confirming unit, the moisture number calculating unit, the moisture number trigger value storage unit, the moisture duration calculating unit, the longest time trigger value to wait for the dryness recovery storage unit, the moisture degree analyzing unit, the minimum voltage trigger value (or the maximum capacitance trigger value) storage unit, the liquid discharge duration calculating unit, and the longest liquid discharge time trigger value storage unit described in the aforementioned fig. 13, and further includes a status output or status display unit 68 (which may include functions of urine wetness data display and audible and visual urine wetness alarm), therefore, the whole process from signal acquisition to signal processing to state output or display can be realized, as shown in fig. 25.

The embodiment of the invention has the beneficial effects that the flexible electrodes and the absorbing layer for absorbing moisture are arranged on the two sides of the flexible waterproof film of the electronic moisture-sensing absorbing article, so that the flexible waterproof film, the flexible electrodes and the liquid contained in the absorbing layer form a variable electrolytic capacitor, and the moisture state of the electronic moisture-sensing absorbing article can be obtained only by detecting the capacitance value and the change of the variable electrolytic capacitor. In addition, the urine wetness detection device is arranged on a paper diaper which is an application of an electronic wetness sensing absorption article, the periodic charging and discharging operation is carried out on a urine wetness sensing line arranged on the paper diaper through a charging and discharging unit, voltage peak value data (or capacitance value data) related to the variable capacitance value of the paper diaper is obtained, a curve reflecting the wet state of the paper diaper is formed, and the curve contains various information for judgment, such as whether urine wetness occurs or not, how long the urine is discharged or how wet the urine is, how many times the urine is wet, how the maximum urine wetness degree is, whether the urine is dry or not, and the like, so that the urine wetness detection is more diversified, and the detection information is richer.

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. An electronic wetness saturation paper diaper, comprising:

a flexible waterproof film;

a water-permeable woven fabric layer;

2. The ewc diaper of claim 1, wherein the absorbent layer comprises a first absorbent for absorbing the liquid entering from the water-permeable woven fabric layer and increasing the capacitance value of the variable electrolytic capacitor, and a second absorbent mixed in the first absorbent for absorbing the liquid from the first absorbent such that the liquid content in the first absorbent decreases and the wet area decreases, thereby decreasing the capacitance value of the variable electrolytic capacitor.

3. The electronically moisture-saturation-sensitive diaper according to claim 2, wherein the first absorbent has a faster moisture absorption rate than the second absorbent, the second absorbent has a stronger moisture absorption capacity than the first absorbent and has a moisture absorption locking capacity, thereby realizing a process of transferring the liquid from the first absorbent to the second absorbent, the process being dynamically reflected in the change of the capacitance value, the first absorbent includes a fine water storage space formed of a soft porous material, and the second absorbent includes a fine particulate polymer water-absorbent resin.

4. The electronic wetness saturation paper diaper of claim 1, wherein a hydrophilic layer is disposed between the flexible waterproof film and the absorbing layer and in a position close to the flexible waterproof film, for absorbing liquid from the absorbing layer and facilitating to maintain a surface area of the flexible electrode covered by the liquid unchanged, thereby reducing a capacitance value change of the variable electrolytic capacitor, the hydrophilic layer comprises a hydrophilic material layer; and a surfactant is arranged between the hydrophilic layer and the flexible waterproof film.

5. The electronically moisture-saturation-sensing paper diaper according to claim 4, wherein said flexible waterproof film is a flexible waterproof breathable film, and an impermeable coating is disposed between said flexible waterproof breathable film and said hydrophilic layer and on a surface close to said flexible waterproof breathable film for preventing a liquid contained in said hydrophilic layer from leaking through said flexible waterproof breathable film, thereby preventing a short circuit between said flexible electrodes separated and insulated from each other.

6. The electronic wetness saturation paper diaper of claim 1, wherein the flexible waterproof film comprises a flexible insulating protective layer covering the flexible electrode for preventing a human body from contacting the flexible electrode to affect a capacitance value of the variable electrolytic capacitor.

7. The electronically moisture-sensitive saturable diaper of claim 1 wherein the flexible waterproof film comprises a polyethylene film.

8. The electronically moisture-saturation-sensing paper diaper according to claim 1, wherein the electronically moisture-saturation-sensing paper diaper is any one of a paper diaper, a paper diaper pad and a sanitary napkin.

9. The electronic wetness saturation paper diaper of claim 1, wherein the wetness detecting means further comprises: and the wireless transmitting unit is used for transmitting the information related to the voltage peak data in a wireless mode.

10. The electronic moisture saturation sensing paper diaper according to claim 1, wherein the electronic moisture saturation sensing paper diaper is a paper diaper, the paper diaper comprises a front belly patch, the front belly patch comprises a magic tape for attaching the urine wetness detecting device, and two sides of a urine wetness sensing line of the front belly of the paper diaper are respectively provided with a notch for turning the urine wetness sensing line and electrically connecting the urine wetness detecting device.

11. The electronic wetness saturation paper diaper of claim 1, wherein the electronic wetness saturation paper diaper is a paper diaper, the paper diaper comprises a front belly patch, the front belly patch comprises a magic tape for attaching the wetness detecting device, and a wetness sensing line of the front belly of the paper diaper comprises a protruding portion for being electrically connected with the wetness detecting device after being turned over.

12. The electronic wetness saturation paper diaper of claim 1, wherein the wetness detecting means further comprises:

the bottom shell is provided with a magic tape and is used for sticking and fixing the urine wetness detecting device on the electronic wetness sensing saturation paper diaper;

the surface shell and the bottom shell form a sealing body together; the electronic circuit board is positioned in the sealing body;

the movable lock catch is used for clamping the electronic humidity saturation paper diaper under the combined action of the movable lock catch and the face shell;

and one end of the probe is positioned between the face shell and the movable lock catch, and when the electronic humidity saturation paper diaper is clamped, the probe is electrically connected with a urine humidity induction line on the electronic humidity saturation paper diaper so as to acquire a variable capacitance value signal provided by the electronic humidity saturation paper diaper and transmit the variable capacitance value signal to the electronic circuit board.

13. The electronically moisture-sensitive saturable diaper of claim 12, wherein: the urine wetness detecting apparatus further includes:

14. The electronically moisture-sensitive saturable diaper of claim 12, wherein: the urine wetness detecting apparatus further includes:

15. The electronic wetness saturation paper diaper of claim 12, wherein the wetness detecting means further comprises:

the clamping piece detection unit is used for judging whether the movable lock catch clamps the electronic humidity saturation paper diaper or not, and when at least 2 probes simultaneously contact the same urine humidity induction line, the clamping piece detection unit sends a clamping piece signal and lights an LED indicator lamp on the clamping piece signal.

16. The electronic wetness saturation paper diaper of claim 12, wherein the wetness detecting means further comprises:

and the sleeping posture detection unit sends a lying sleeping signal when the urine humidity detection device is turned over.

17. A method for manufacturing an electronic humidity-sensitive saturation paper diaper capable of providing dynamic liquid absorption process information and absorption capacity information is characterized by comprising the following steps:

selecting a flexible waterproof film as a base material;

one side of the flexible waterproof film is provided with a strip-shaped parallel line, flexible electrodes which are mutually separated and insulated from each other up and down, an upper positive electrode, a middle insulation and a lower negative electrode;

covering a flexible insulating layer on the flexible electrode;

arranging a first absorber on the other surface of the flexible waterproof film at a position corresponding to the flexible electrode;

a second absorber is arranged above the first absorber or mixed in the first absorber, the second absorber has strong moisture absorption and locking capacity, and the first absorber and the second absorber form an absorption layer of the electronic moisture saturation paper diaper; covering a layer of water-permeable braided fabric above the absorption layer, and fixing the absorption layer between the flexible waterproof film and the water-permeable braided fabric;

through the arrangement, the electronic moisture saturation paper diaper which can be injected with liquid from the water-permeable woven fabric layer, can be absorbed by the first absorber, can be absorbed and locked by the second absorber from the first absorber and can be prevented from liquid leakage by the flexible waterproof film is formed;

and the flexible electrode, the flexible waterproof film and the liquid contained in the first absorber form a special nonpolarity variable electrolytic capacitor, wherein the flexible electrode is used as an electrode of the variable electrolytic capacitor, the flexible waterproof film is used as a dielectric medium of the variable electrolytic capacitor, the liquid contained in the first absorber is used as an electrolyte of the variable electrolytic capacitor, the capacitance value of the variable electrolytic capacitor is related to the content and distribution of the electrolyte liquid contained in the first absorber, the liquid enters the first absorber from the layer of water-permeable woven fabric, and the process of absorbing and locking moisture from the first absorber by the second absorber is dynamically reflected in the change of the capacitance value of the variable electrolytic capacitor.

18. The method of manufacturing of claim 17, further comprising the steps of:

a material or a coating with specific hydrophilic or hydrophobic property is arranged between the flexible waterproof film and the first absorber and on the surface close to the flexible waterproof film, the hydrophilic or hydrophobic property of the material is different, and the accumulation and distribution of the moisture of the first absorber on the surface of the flexible waterproof film can be influenced, so that the change of the capacitance value of the variable electrolytic capacitor can be influenced, different capacitance change rules can be generated, and the liquid content or the liquid distribution condition of the first absorber can be obtained by detecting the capacitance value of the variable electrolytic capacitor.

19. The method of manufacturing of claim 18, wherein: the first absorbent body has a faster but relatively weaker absorption capacity, and the liquid entering from the layer of water-permeable fabric will first be present in the first absorbent body with an increased liquid content, thus increasing the capacitance value with the variable electrolytic capacitor; and

the second absorber has a slower but relatively stronger liquid absorption capacity, and can compete for moisture from the first absorber and lock the moisture, so that the moisture content in the first absorber is reduced, and the capacitance value of the variable electrolytic capacitor is reduced, and a dynamic change process of increasing the capacitance value to be reduced is formed; and

the second absorber has a limited ability to absorb and lock water, and when the second absorber is close to saturation, the water absorption locking ability thereof is significantly reduced, so that the ability to compete for water from the first absorber is reduced and the rate of reduction of the capacitance value is slowed, thereby providing information as to whether the liquid absorption locking ability of the electronic moisture saturation diaper is close to the limit.

20. The method of claim 19, wherein the electronically wetness saturation diaper comprises a disposable diaper, a paper diaper pad, or a sanitary napkin; the flexible waterproof film comprises a polyethylene film; the water-permeable woven fabric comprises non-woven fabrics; the flexible electrode comprises conductive ink lines printed on the flexible waterproof film and metal lines pasted on the flexible waterproof film; the insulating layer covering the flexible electrode comprises soft and loose non-woven fabric; the first absorber comprises a fine water storage space made of a specific flexible material; the second absorber comprises fine granular high-molecular water-absorbing resin, and the water-absorbing resin is mixed in the first absorber; the hydrophilic material comprises paper, cotton or hydrophilic non-woven fabric; the hydrophobic material comprises hydrophobic non-woven fabric; the liquid includes urine, sweat, menses, or other excreta containing moisture.