CN110346425B

CN110346425B - Moisture absorption type humidity sensing module and humidity sensing sticker with same

Info

Publication number: CN110346425B
Application number: CN201811135839.0A
Authority: CN
Inventors: 张国忠; 黄国财; 李柏锋; 方美雁
Original assignee: Yingqun Bangsheng Technology Co ltd
Current assignee: Yingqun Bangsheng Technology Co ltd
Priority date: 2018-04-02
Filing date: 2018-09-28
Publication date: 2022-11-29
Anticipated expiration: 2038-09-28
Also published as: CN110346425A; CN210243554U; CN209589913U; CN209656615U

Abstract

The invention provides a humidity sensor which is characterized by comprising a base material, wherein the base material is provided with a coating lead and humidity detection parts S, the number of the humidity detection parts S is at least 1, each humidity detection part S is provided with at least two electrodes, each electrode is connected with the corresponding coating lead, and an electrochemical medium which is insulated when dry and conductive when wet is arranged between the electrodes. The use of such a wetness sensor allows highly sensitive monitoring of wetness, in particular the amount and extent of urine.

Description

Moisture absorption type humidity sensing module and humidity sensing sticker with same

The present application claims prior application to taiwan, application No.: 107111670;107204339; application date: priority of 4/2/2018. The present application also claims prior application in taiwan, application No.: 107210375, filing date: priority of 30 days in 2018, 7 months.

Technical Field

The present invention relates to humidity sensing, and more particularly to a moisture absorption type humidity sensing module and a humidity sensing sticker having the same.

Background

A humidity sensor is a device or apparatus that converts the amount of humidity into an electrical signal that is easily processed by a measurement. A common humidity sensor generally measures the relative humidity in the environment. For certain applications, such as measuring wetness in absorbent articles, such as diapers, training pants, incontinence products, feminine hygiene products, and swim undergarments, conventional wetness sensors cannot be directly applied.

Currently, various types of moisture or wetness indicators have been used in absorbent articles. Zl201180075983.X discloses an absorbent article with a built-in liquid discharge sensor, which comprises an electrically insulating back sheet, an absorbent core and a liquid discharge sensor are arranged on a body book of the back sheet, at least one hole is formed in the back sheet to enable at least one liquid discharge sensor to be communicated with the absorbent core, the liquid discharge sensor is provided with a plurality of conductive wires, each conductive wire is partially exposed by at least one hole, liquid discharge enters the absorbent core from the hole, and when the absorbent core between the two conductive wires is changed from a dry state to a wet state, the liquid discharge sensor outputs an electric signal; a plurality of apertures are provided in the back sheet, each aperture being longitudinally spaced from the other apertures, with a longitudinal axis extending in a front-to-back direction of the absorbent article.

Such a liquid discharge sensor that detects the range of humidity in an absorbent article has the following disadvantages: 1. are built into absorbent articles (e.g., diapers, training pants, etc.), must be manufactured with the absorbent article, and cannot be matched with other absorbent articles. 2. When the wet absorbent core is used to conduct the conductive wires of the liquid discharge sensor and output an electric signal after absorbing liquid by the absorbent core, and when the adjacent conductive wires are conducted when the degree of wetness of the absorbent core is insufficient, the liquid discharge sensor cannot output an electric signal, and the liquid discharge sensor has low sensitivity. 3. The liquid excretion sensor is provided with a metal conducting wire, the metal conducting wire is integrated in a diaper, an incontinence product and the like, the hidden danger that the metal conducting wire is broken to hurt a user exists, the cost of the metal conducting wire is high, the foreign body sensation of a human body is strong when the metal conducting wire is close to the human body, and the comfort is poor.

Disclosure of Invention

The invention aims to provide a humidity sensor which can be matched with any absorption core and does not have a metal wire.

The humidity sensor comprises an insulator substrate, wherein the substrate is provided with a coating lead and at least 1 humidity detection part, each humidity detection part is provided with at least two electrodes, each electrode is connected with the corresponding coating lead, and an electrochemical medium which is insulated in dry state and conductive in wet state is arranged between the electrodes. The coated lead is a conductive wire which is arranged on the substrate by printing or coating by using conductive adhesive (such as conductive silver adhesive and conductive carbon adhesive) or biochemical ink and the like.

When in use, the base material is fixed on the surface of the absorbent article, and the humidity sensor is directly contacted with a human body; when a liquid substance is present, the liquid first comes into direct contact with the wetness sensor and is absorbed by the absorbent article. The electrochemical medium of the humidity detection unit wetted with the liquid changes from an insulator to a conductor, and the two electrodes change from an open circuit to a short circuit to output an electric signal to the outside.

In some aspects, the portion of the substrate having the electrochemical media has a greater electrical conductivity than the electrical conductivity of the substrate when the substrate is wetted.

In some embodiments, the substrate has a portion that does not include an electrochemical mediator and a portion of the substrate that includes an electrochemical mediator, wherein the portion of the substrate that does not include an electrochemical mediator when wetted has a lower electrical conductivity than the portion of the substrate that includes the electrochemical mediator.

In some embodiments, the substrate has a portion that does not include an electrochemical medium and a portion of the substrate that includes an electrochemical medium, wherein the electrochemical medium has a conductivity equal to the portion of the substrate that includes the electrochemical medium when the substrate is dry.

In some approaches, the substrate is an insulator.

Humidity detection unit

In some preferable schemes, there are a plurality of humidity detection parts, each humidity detection part sends out a conduction signal when being conducted, and the plurality of humidity detection parts send out an accumulated conduction signal when being conducted. For example, the on signal is a buzzer sound, and when only one humidity detection unit is on, a single buzzer sound is generated per unit time. When two humidity detection parts are conducted, two buzzes are emitted in unit time; when N humidity detection parts are conducted, N buzzes are generated in unit time. Alternatively, when one humidity detection unit is turned on, a buzzer sound of one unit intensity is generated, and when N humidity detection units are turned on, a buzzer sound of N × unit intensity is generated. The conducting signal can also be an optical signal and is transmitted to a reminding signal lamp of the terminal. The conduction number of the humidity detection part represents the liquid amount and the humidity diffusion range.

Each coating lead is connected with at least one electrode of the humidity detection part. When a plurality of humidity detection portions are connected to the same coating wire, the electrochemical medium of the humidity detection portion which is not wetted by liquid is an insulator, only current is supplied to the coating wire, and a wire which is not connected with another electrode of the humidity detection portion wetted by liquid does not form a loop with the coating wire, so that signal interference cannot be caused by the plurality of humidity detection portions arranged on one coating wire, and the area of the substrate can be saved.

In some preferred forms, each electrode comprises a plate connected to a lead, the electrochemical medium is disposed between the two plates, and the plates are coated with a conductive paste (e.g., a screen-printed carbon paste or silver paste). One of the polar plates in the humidity detection part is arranged in the other polar plate, the outer polar plate is provided with a gap, and the connection part of the inner polar plate and the coating lead thereof is positioned in the gap. The inner polar plate and the outer polar plate are both circular, and the connecting part of the inner polar plate and the connecting part of the outer polar plate are both straightness. In the form of inclusion and inclusion, the relative area between the two plates is increased to improve the sensitivity of the humidity detection part. Alternatively, the two electrode plates of the humidity detection unit face each other. Comb teeth are distributed along the polar plate, and tooth grooves are formed between every two adjacent comb teeth; the comb teeth of the two electrodes are opposite. In the humidity detection part, the comb teeth of one electrode are inserted into the tooth grooves of the other electrode, the position between the adjacent comb teeth is the tooth groove, a gap is formed between the two electrodes, and an electrochemical medium is filled in the gap between the electrodes. The sensing area of the electrode is increased by the comb teeth, and an electric signal can be output as long as an electrochemical medium between a pair of comb teeth is wetted in the two electrodes, so that the sensitivity of humidity sensing is improved. And a part of the coated wire is used as a polar plate, or the polar plate is overlapped with the coated wire part, or the polar plate is positioned at the end of the coated wire, or the polar plate is connected with the end of the coated wire. Preferably, the two electrodes are located in the same layer. The electrochemical medium partially or completely covers the electrodes. During manufacture, the electrochemical medium solution is dripped into the humidity detection part and then dried to enable the electrochemical medium to be in an insulated state.

Or each humidity detection part comprises a pair of conductive segments, a moisture absorption hole is arranged between the two conductive segments, and an electrochemical medium is filled in the moisture absorption hole. The liquid enters the moisture absorption hole, the electrochemical medium is changed from the insulator into a conductor, and the two conductive segments are conducted to output an electric signal.

Each conductive segment comprises a carbon glue layer and a silver glue layer, the conductive segments are coated on the surface of the base material, and the silver glue layer is arranged between the carbon glue layer and the base material. One end of the conductive section adjacent to the moisture absorption hole is a first end, and the other end of the conductive section is a second end; the second end parcel of silver-colored glue film is in the carbon glue film, and the second end of silver-colored glue film and the second end of carbon glue film all expose in the hole that absorbs moisture. An electrochemical medium is arranged in a gap between the silver adhesive layer and the carbon adhesive layer. Or the silver glue layer is wrapped in the carbon glue layer.

The electrochemical media fills the hygroscopic pores. The electrochemical medium fills the moisture-absorbing apertures and has an overflow portion that partially covers the two conductive segments. The carbon glue layer and the silver glue layer both participate in electric conduction, the carbon glue layer plays a role in protecting the silver glue layer, and the silver glue layer plays a role in enhancing electric signals. The electrochemical medium is filled in the moisture absorption holes and permeates into each gap exposed to the moisture absorption holes, so that the contact area of the electrochemical medium and the conductive segments is increased, and the sensitivity of the humidity detection part S is enhanced.

Base material

Preferably, the substrate is a hygroscopic paper tape. Paper materials such as filter paper, rice paper, and plant fiber absorbent paper, which have good moisture absorption and do not undesirably diffuse liquid, can be used as the base material.

Preferably, the base material is a strip-shaped absorbent paper having an equal width, and the humidity detectors S are spaced apart from each other in the longitudinal direction of the base material.

As one option, the substrate has at least one enlarged portion thereon; the swelling part is provided with humidity detection parts S at intervals along the width direction.

As a scheme, the base material comprises a detection section and a signal connection section, the humidity detection part S is arranged at the detection end, the signal input terminal is arranged at the signal connection section, and the detection section and the signal connection section form an included angle. The detection section is orthogonal to the signal connection section. The base material has at least one swelling portion having one or more humidity detection portions S.

The base material is provided with a positioning hole which is staggered with the coating lead and the humidity detection part S. In use, the moisture sensor needs to be connected to a connector capable of inputting current to the moisture sensor, and the locating hole is used to mate with the connector to determine the correct position between the moisture sensor and the connector.

The front surface of the base material is provided with a coating wire, and the back surface of the base material is printed with patterns. The pattern is printed with a material that develops color when it is in contact with water. After the base material absorbs liquid, the patterns appear, and the effects of beauty and indication are achieved.

Coated wire

Preferably, the coated wires are multiple, and the coated wires are not crossed. All the coated wires are positioned in the same layer, and no intersection point exists between the coated wires, so that signal interference does not occur.

And a humidity detection part S is arranged between every two adjacent coating wires. A humidity detection part S is arranged between the two outermost coating leads.

Preferably, the coated wire extends along the length of the substrate. Two wires at the outermost side are straight line segments parallel to the base material respectively. Each of the wires has parallel sections parallel to the substrate. One end of the parallel section is a signal terminal. The signal terminal is used for connecting current. The wires from the first coated wire to the last coated wire are numbered in natural numbers, and a humidity detection part S is arranged between adjacent odd-numbered wires or a humidity detection part S is arranged between adjacent even-numbered wires.

Alternatively, the coated wire may be formed in a pattern having at least one expanded area having 1 or more humidity sensing parts S. The humidity detection parts S are provided at intervals in the longitudinal direction of the base material in the expanded region, or at intervals in the width direction of the base material, or both the humidity detection parts S provided at intervals in the longitudinal direction and the humidity detection parts S provided at intervals in the width direction are provided. The expanded area corresponds to the expanded part on the base material; or the substrate is a strip with the same width, and only the pattern formed by the coating wires has an expanded area. The center of the expansion area is provided with a humidity detection part S. The provision of the enlarged region serves to improve the detection of the moisture range in the region of liquid concentration.

Adhesive layer

Preferably, the humidity sensor has an adhesive layer. The adhesive layer can enable the substance to be attached or adhered to any place where humidity sensing is needed, for example, the adhesive layer is a non-drying glue layer. The coated wire is positioned between the adhesive layer and the substrate. The adhesive layer not only serves as an adhesive, but also seals the coated leads and the electrochemical media between the adhesive layer and the substrate. When the electrochemical humidity sensor is used, liquid reaches the humidity detection part S to humidify the electrochemical medium only through the base material, so that misleading of an electrode and misjudgment of liquid quantity caused by the fact that the liquid directly reaches the humidity detection part S without being absorbed by the base material due to liquidity of the liquid are avoided. The electrochemical medium is higher than the electrode, and the adhesion layer covers the electrochemical medium and the electrode.

Release sheet layer

Preferably, a release sheet layer is detachably attached to the adhesive layer. The release sheet layer is a resin film. The release sheet layer completely covers the substrate, a free separation section is arranged between the release sheet layer and the substrate, and the adhesion layer covers the area of the substrate except the free separation section. The free separation section facilitates separation of the release sheet layer from the substrate.

Moisture sensor coiled material

The humidity sensor coiled material comprises a plurality of humidity sensors, the humidity sensors are sequentially arranged along the length direction in a head-to-head connection mode, the head end of the first humidity sensor is a free end, the tail end of the last humidity sensor is a free end, and the humidity sensors are sequentially coiled into the coiled material from the first humidity sensor.

Preferably, a separation mark is arranged between two adjacent humidity sensors. The separation mark is a crease, or a tear line, etc.

The coiled material comprises a mandrel, and the head end of the first humidity sensor is fixed with the mandrel. The humidity sensor is housed around the mandrel. The tail end of the last humidity sensor is provided with a fixing piece. The fixing member prevents the coil from being loosened.

Preferably, the moisture sensor in the web includes a substrate, a coated wire, a moisture sensing portion S, and an electrochemical medium. When the humidity sensor is used, one humidity sensor is taken down, and the humidity sensor is attached to an object to be tested through bonding or other modes.

Preferably, the humidity sensor in the roll includes a base material, a coated wire, a humidity detecting portion S, an electrochemical medium, an adhesive layer, and a release sheet layer. When the humidity sensor is used, the humidity sensor is taken down, and the adhesion layer is used for attaching the humidity sensor to an object to be tested after the release sheet body layer is torn.

And a plurality of humidity sensors are stored into a roll, so that the roll is convenient to transport, store and store.

Humidity sensor strip

Humidity transducer coiled material, including a plurality of humidity transducer, the humidity transducer head links to each other along length direction sequence arrangement, and first humidity transducer's head end is the free end, and last humidity transducer's tail end is the free end, and front and back adjacent humidity transducer is folding, and folding department is two humidity transducer's boundary line. A plurality of humidity transducer fold into a humidity transducer's length, convenient storage.

Preferably, the dividing line is an intermittently connected tear line to facilitate access to the individual moisture sensors.

The invention has the advantages that:

1. the humidity sensor is an independent device, can be used together with any absorbent article (such as a diaper, a raincoat and the like), has no requirement on an application object, has wide applicability, and can be manufactured independently.

2. The coated wire is used for replacing a metal wire, so that potential safety hazards are avoided, and the cost is low.

3. The base material is a paper tape, and the base material is directly contacted with a human body, so that the detection sensitivity is high; and the substrate is soft, the coating wire can not increase the foreign body sensation of the substrate, and the comfort of the human body is improved.

4. The coating wire is packaged between the adhesive layer and the substrate, the substrate is in contact with a human body, the substrate isolates the coating wire from the human body, current input into the coating wire cannot flow through the human body, and the use safety is high.

Drawings

FIG. 1 is a plan perspective view of a first embodiment of a humidity sensor of the present invention (with the release sheet layer removed).

Fig. 2 is a sectional view of the humidity detecting part S according to the first embodiment of the humidity sensor of the present invention.

Fig. 3 is a plan view of the conductive silver paste layer of fig. 1 in a top view according to the present invention.

Fig. 4 is a partial enlarged view of fig. 3 according to the present invention.

FIG. 5 is a schematic perspective plan view of the first embodiment of the humidity sensor of the present invention with the receiver attached (with the release sheet layer removed).

FIG. 6 is a plan view of example 2 of the conductive silver paste layer in the humidity sensor according to the present invention.

Fig. 7 is a sectional view of a humidity sensing part S according to a third embodiment of the humidity sensor of the present invention.

FIG. 8 is an enlarged partial view of a humidity sensor according to a fourth embodiment of the present invention.

FIG. 9 is an enlarged partial view of a fifth embodiment of the humidity sensor in accordance with the present invention.

FIG. 10 is an exploded perspective view of the connection portion of the humidity sensor of the present invention electrically connected to the inside of the receiver.

Fig. 11 is a perspective assembly view according to fig. 10 of the present invention.

FIG. 12 is an enlarged schematic view of a humidity sensor according to a sixth embodiment of the present invention.

Fig. 13 is a sectional view of a humidity sensing part S in another embodiment of the humidity sensor according to the present invention.

Fig. 14 is a sectional view of a humidity sensing part S in another embodiment of the humidity sensor according to the present invention.

[ notation ] to show

100. 100a 8230and humidity sensor

1-8230and base material

2 8230and a conductive silver adhesive layer

21 \ 8230and conducting segment

211 \ 8230and moisture absorption holes

22 \ 8230and connecting part

221 \8230andcontact point

222 \8230ahole body

3 \ 8230and protective layer

3b 8230and carbon glue layer

31 \ 8230and the second gap

32' \ 8230and carbon glue part

4 8230and electrochemical medium

41 8230a caulking part

42 \ 8230and bay part

5 8230j an adhesive layer

6 \ 8230and release sheet body layer

7 \ 8230and receiver

71 \ 8230and electric connection structure

711, 8230and first structural member

712 (8230); second structural member

713 8230and lead terminal

714 \ 8230and the first magnetic part

715 8230and the second magnetic part

716' \ 8230and caulking groove

717 8230and its blocking body

A1-A5 8230and the first to fifth large-area sensing regions

S8230and humidity detection part S

Detailed description and specific embodiments

The structures referred to in this application, or the terminology used, are further described below in the specification and drawings in a general sense and are not intended to be limiting, unless otherwise specified.

Humidity detection

The moisture detection represents the amount of liquid or moisture, including but not limited to: urine, feces with liquid, blood, tissue fluid, secretion, saliva, purified water, rainwater, water formed by condensation of water vapor, and secretion or excrement formed by condensation of hot vapor on the body surface; moisture includes, but is not limited to: water vapor formed by evaporation, water vapor in humid air, hot vapor on the human body surface, and water vapor in solid or semisolid excrement. In addition, the humidity detection indicates the spread range of the liquid.

Electrochemical media

The electrochemical mediator is a substance that is non-conductive when dry and conductive when wet, and the substance is any chemical substance. For example, inorganic salts are not conductive in nature when dry, and when dissolved, for example, water as a solvent, free ions are present in the solvent and thus are conductive. Such substances can also be of the type that chemically react, for example, when dry they do not conduct electricity and when dissolved, chemically change to produce ions, causing electrical conduction. These substances can be, but are not limited to, for example, inorganic salts (NaCl, mgCl, etc.), or hydrophilic polymers containing at least one polar or charged functional group, etc., the electrochemical medium 4 being actively hygroscopic. Often contain hydrophilic functional groups in the polymer backbone or side chains, including but not limited to CONH2-, -OH, -CONH, -COOH, -SO ₃ H、－NH ₂ . For example, acrylics include, but are not limited to, acrylic acid, acrylamide, polyethylene, and the like, as well as copolymers modified or formed from the above-described polymer precursors copolymerized with one another. Amine functional polymers include, but are not limited to, allylamine, ethyleneimine, enol, and other polymers containing amine groups in their main or side chains.

For example, some of these reagents for testing blood glucose in urine or blood react with certain analytes in urine or blood when they encounter urine or blood, thereby causing a chemical reaction, and thus causing a conductive substance.

Signalling system

The humidity sensor generally needs to be used in conjunction with a signaling system to indicate to the user when the liquid is wetting the humidity sensor. For example, in one aspect, the signaling system is designed to emit a signal when the humidity sensor detects liquid. However, the humidity sensor can be matched with the existing signal system, and the structure of the humidity sensor does not need to include the structure and the detection scheme of the signal system.

Humidity sensor

The humidity sensor can be independently manufactured, is matched with any object to be detected, does not have a metal lead, can actively absorb moisture, can identify the liquid amount and/or the humidity range after being wetted, and can be directly contacted with a human body.

As shown in fig. 1, 3, 5, 6, 8, 9 and 12, the humidity sensor comprises a substrate, a coating lead and a humidity detection part S are arranged on the substrate, at least 1 humidity detection part S is arranged on the substrate, each humidity detection part S is provided with at least two electrodes, each electrode is connected with the corresponding coating lead, and an electrochemical medium which is insulated in dry time and conductive in wet time is arranged between the electrodes. The coated lead is a conductive wire which is arranged on the substrate by printing or coating by using conductive adhesive (such as conductive silver adhesive and conductive carbon adhesive) or biochemical ink and the like.

When in use, the base material is fixed on the surface of the absorbent article, and the humidity sensor is directly contacted with the human body; when a liquid substance is present, the liquid first comes into direct contact with the wetness sensor and is absorbed by the absorbent article. The electrochemical medium of the humidity detection unit S wetted with the liquid changes from an insulator to a conductor, and the two electrodes change from an open circuit to a short circuit, thereby outputting an electric signal to the outside.

In some embodiments, the substrate may be an insulating but water-absorbent material, or the substrate may be an insulating but not water-absorbent material. When the substrate is insulating but not water-absorbent, the electrochemical medium of the humidity detection part is not conductive when it is dry, but generally has a liquid when it is wet by the liquid, so that the dry electrochemical medium or a part of the electrochemical medium forms an electrochemical solution to cause conductivity. The liquid here can be any solution with water molecules, such as urine, saliva, etc., which directly contacts the electrochemical medium. The substrate may be an insulating but water-absorbing material, in which case the electrodes are arranged on the substrate with a gap between them without contact, and the substrate is spotted, coated with a liquid electrochemical medium, and then dried. When dry, the electrochemical medium is not conductive, so that no current is formed between the two electrodes. When the substrate absorbs the liquid, it also wets the electrochemical mediator, leaving the dry electrochemical mediator wet or a portion of the electrochemical mediator wet, which forms ions in the wet portion, resulting in the generation of an electrical current between the electrodes.

Humidity detection unit S

In some embodiments, as shown in fig. 1, 3, 5, 6, 8, 9, 12, 13 and 14, the humidity sensing part includes one or more humidity sensing units S or T. Each humidity detection part S sends out a conduction signal when being conducted, and a plurality of humidity detection parts S send out an accumulated conduction signal when being conducted. For example, the on signal is a buzzer sound, and when only one humidity detection unit S is on, a single buzzer sound is emitted per unit time. When two humidity detection parts S are conducted, two buzzes are emitted in unit time; when N humidity detection units S are turned on, N beeps are generated in unit time. Alternatively, when one humidity detection unit S is turned on, a buzzer sound of one unit intensity is generated, and when N humidity detection units S are turned on, a buzzer sound of N × unit intensity is generated. The conducting signal can also be an optical signal and is transmitted to a reminding signal lamp of the terminal. The conduction number of the humidity detection section S represents the liquid amount and the humidity diffusion range. The alarm signal is identified and sent by the electric connection structure, or the alarm signal is transmitted to the terminal by the electric connection structure and identified and sent by the terminal.

Each coated wire is connected with at least one electrode of the humidity detection part S. When a plurality of humidity detection parts S are connected to the same coating lead, the electrochemical medium of the humidity detection part S which is not wetted by liquid is an insulator, only current is supplied to the current coating lead, and a lead which is connected with the other electrode of the humidity detection part S which is not wetted by liquid does not form a loop with the current coating lead, so that the plurality of humidity detection parts S arranged on one coating lead can not cause signal interference, and the area of the substrate can be saved.

In some embodiments, each electrode comprises a plate connected to a lead, the electrochemical medium is disposed between the two plates, and the plates are coated with a conductive adhesive (e.g., a screen-printed carbon adhesive or silver adhesive). As shown in fig. 4, 6 and 8, one of the plates in the humidity sensing part S is inside the other plate, the outer plate has a gap, and the connection part of the inner plate and its coated wire is located in the gap. The inner polar plate and the outer polar plate are both circular, and the connecting part of the inner polar plate and the connecting part of the outer polar plate are both straightness. In the inclusion and inclusion forms, the relative area between the two electrode plates is increased to improve the sensitivity of the humidity detection part S.

Alternatively, as shown in fig. 4, 6, 9, 12, 13 and 14, the two plates of the humidity sensing part S are opposed to each other. Comb teeth are distributed along the pole plate, and tooth grooves are formed between every two adjacent comb teeth; the comb teeth of the two electrodes are opposite. In the humidity detection part S, comb teeth of one electrode are inserted into tooth grooves of the other electrode, the position between adjacent comb teeth is a tooth groove, a gap is formed between the two electrodes, and an electrochemical medium is filled in the gap between the electrodes. The comb teeth increase the sensing area of the electrode, and as long as an electrochemical medium between a pair of comb teeth in the two electrodes is wetted, an electric signal can be output, so that the sensitivity of humidity sensing is improved. And a part of the coated lead is used as a polar plate, or the polar plate is overlapped with the coated lead, or the polar plate is positioned at the end of the coated lead, or the polar plate is connected with the end of the coated lead.

In some embodiments, the two electrodes are located in the same layer. The electrochemical medium partially or completely covers the electrodes. During manufacturing, the electrochemical medium solution is dripped into the humidity detection part S and is dried, so that the electrochemical medium is in an insulation state.

Alternatively, as shown in fig. 2 and 7, each humidity sensing portion S includes a pair of conductive segments, a moisture absorption hole is formed between the two conductive segments, and the moisture absorption hole is filled with an electrochemical medium. The liquid enters the moisture absorption hole, the electrochemical medium is changed from the insulator to the conductor, and the two conductive segments are conducted to output an electric signal.

Each conductive segment comprises a carbon glue layer and a silver glue layer, the conductive segments are coated on the surface of the base material, and the silver glue layer is arranged between the carbon glue layer and the base material. One end of the conductive section adjacent to the moisture absorption hole is a first end, and the other end of the conductive section is a second end; the second end parcel of silver-colored glue film is in the carbon glue film, and the second end of silver-colored glue film and the second end of carbon glue film all expose in the hole that absorbs moisture. The gap between the silver glue layer and the carbon glue layer is filled with electrochemical medium, as shown in fig. 2. Alternatively, the silver paste layer is wrapped inside the carbon paste layer, as shown in fig. 7.

The electrochemical media fills the hygroscopic pores. The electrochemical medium fills the moisture-absorbing apertures and has an overflow portion that partially covers the two conductive segments. The carbon adhesive layer and the silver adhesive layer both participate in electric conduction, the carbon adhesive layer plays a role in protecting the silver adhesive layer, and the silver adhesive layer plays a role in enhancing electric signals. The electrochemical medium is filled in the moisture absorption holes and permeates into each gap exposed to the moisture absorption holes, so that the contact area of the electrochemical medium and the conductive segments is increased, and the sensitivity of the humidity detection part S is enhanced.

Base material

The substrate is a carrier of the coated wire, and has water absorption and moisture absorption. Liquid or water vapor firstly permeates into the base material, the electrochemical medium is wetted and then generates electrochemical reaction, and the corresponding coating lead and the wetted humidity detection part output electric signals. When the substrate is dried, the substrate absorbs liquid or water vapor, and when the humidity is not enough to enable the electrochemical medium to generate electrochemical reaction, the coating lead can not output an electric signal enough to serve as an alarm signal even if the electric signal is output. If the liquid or moisture absorbed by the substrate only wets the space between the coated leads, and the electrochemical medium is still in a dry state or the humidity of the electrochemical medium is not enough for electrochemical reaction, even if an electric signal is output between the coated leads, the electric signal output by the electrochemical reaction of the humidity detection part cannot be interfered.

Here, the substrate has at least two parts, one of which is treated with electrochemical mediator and the other part is free of electrochemical mediator. The mode of treatment may be dropping the electrochemical mediator solution onto the substrate. Generally any substrate having water absorption properties, such as absorbent filter paper, glass fibers, cotton, which absorb or retain water by capillary action, can be used as the substrate of the present invention. This creates a place on the substrate with treated electrochemical medium and a place on the substrate with untreated electrochemical medium. When the substrate has water absorption, there is a possibility that the electrochemical medium is not treated in the wet area but passes through the area having the conductive coating, and in this case, the area treated with the electrochemical medium is not wetted, but the area passing through the conductive coating is wetted but does not have current conduction. Instead, only after the site treated with the electrochemical medium is wetted, can the generation of an electric current be caused between the electrodes to which the conductive coating is attached, thereby causing electrical conduction.

It is considered that, as described above, the liquid wets only the region between any two coated wires, but the liquid does not spread to the humidity detection portion (where the electrochemical medium is processed), and an electrical signal appearing between the coated wires cannot be recognized as a humidity alarm signal by the electrical connection structure. For example, electrical signals that are weak or even absent are not recognizable by the electrical connection structure.

Or, the electric signal as the humidity alarm signal has an intensity range, the electric connection structure can only identify the electric signal in the intensity range as the humidity alarm signal, and if the electric signal between the coating wires is lower than the intensity lower limit of the humidity alarm signal or higher than the intensity upper limit of the humidity alarm signal, the electric connection structure does not identify the electric signal outside the intensity range. For example, because the substrate has areas treated with electrochemical mediator and areas not treated with electrochemical mediator, theoretically, the two different regions will exhibit different conductivities when subjected to the same degree of wetting. Generally, the place treated with the electrochemical medium has a higher conductivity than the place not treated with the electrochemical medium because the conductive coating may pass through the place not treated with the electrochemical medium and may pass through the place with the electrochemical medium (forming the humidity sensing part), and at this time, if a voltage is applied between the wires, a current is formed in the place treated with the electrochemical medium to be larger than the place not treated with the electrochemical medium, so that the current range of the electrochemical medium and the current range not treated with the electrochemical medium can be set, and thus the current can be selectively identified to represent the wetted place and position and degree. For example, the range of current flow with the electrochemical medium treated is 0.1-5A, whereas the range of current flow without the electrochemical medium treated may be less than 0.1A. At this time, although the part not treated with the electrochemical medium is wetted, the current is generated, but no alarm is caused, and on the contrary, if the current between the two leads is more than 0.1A, the part treated with the electrochemical medium is considered to be wetted, and an alarm is caused, thereby indicating that the part treated with the electrochemical medium is wetted.

In some embodiments, the substrate is a hygroscopic paper tape. Paper materials such as filter paper, rice paper, and absorbent paper made of plant fiber, which have good moisture absorption properties and prevent liquid from spreading unintentionally, can be used as the base material.

In some embodiments, as shown in fig. 12, the base material is a strip-shaped absorbent paper having an equal width, and the humidity sensing parts S are spaced apart from each other in the longitudinal direction of the base material. The electrode plates in the S section can be arranged arbitrarily with a certain distance between each two electrode plates without contact, but the electrochemical medium is processed on the electrode plates and then subjected to a drying process. The conductive coating passes through those portions where the electrochemical medium is not treated, such as those identified by 989 and 981 in fig. 12, but even if wetted at 989 and 981, the conductive coating does not form a loop, no current is generated, and no signal is generated. Only after the S site is wetted, a loop is formed, thereby generating a signal. This is merely a relative state, as mentioned above, it is also possible that the conductivity of the treated electrochemical medium is different from that of the untreated electrochemical medium, so that different currents or voltages can be generated, so that the device can be distinguished, for example, only the part treated with the electrochemical medium forms a loop to indicate a signal, whereas the part not treated with the electrochemical medium does not indicate a signal even if it is conducting.

Alternatively, as shown in FIGS. 1, 3, 5, 6, 8, 9, the substrate has at least one enlarged portion thereon; the swelling part is provided with humidity detection parts S at intervals along the width direction.

Alternatively, the substrate may be selected to be less hygroscopic than the desired material, or even non-hygroscopic, such as a plastic sheet, but where the electrochemical medium is to be treated, it may be sufficient to be hygroscopic. Since two electrodes are arranged where the electrochemical medium is treated. As long as the electrochemical medium encounters a water molecule, part or all of it forms an electrochemical solution, resulting in electrical conduction.

Coated wire

In some embodiments, there are multiple coated wires as shown in fig. 1, 3, 5, 6, 8, 9, 12, without crossing between the coated wires. All the coating wires are positioned in the same layer, and no intersection point exists between the coating wires, so that signal interference can not occur.

And a humidity detection part S is arranged between every two adjacent coating wires. And a humidity detection part S is arranged between the two outermost coating wires.

In some embodiments, as shown in fig. 12, the coated wire extends along the length of the substrate. Two wires at the outermost side are straight line segments parallel to the base material respectively. Each of the conductive wires has a parallel section parallel to the substrate. One end of the parallel section is a signal terminal. The signal terminal is used for connecting current. The wires from the first coated wire to the last coated wire are numbered with natural numbers, and a humidity detection part S is arranged between adjacent odd-numbered wires or a humidity detection part S is arranged between adjacent even-numbered wires. Therefore, the area utilization rate of the base material is highest, each conducting wire is effectively utilized, the maximum quantity of humidity detection parts S are obtained, and the humidity detection range is enlarged.

Alternatively, as shown in fig. 1, 3, 5, 6, 8 and 9, the coated wire is formed in a pattern having at least one expanded area having 1 or more humidity sensing parts S. The humidity detection parts S are provided at intervals in the longitudinal direction of the base material in the expanded region, or at intervals in the width direction of the base material, or both the humidity detection parts S provided at intervals in the longitudinal direction and the humidity detection parts S provided at intervals in the width direction are provided. The expanded area is provided with an expanded part corresponding to the base material; or the substrate is a strip with the same width, and only the pattern formed by the coating wires has an expanded area. The center of the expansion area is provided with a humidity detection part S. The provision of the enlarged region serves to improve the detection of the moisture range in the region of liquid concentration.

Adhesive layer

In some embodiments, as shown in fig. 2 and 7, the humidity sensor has an adhesive layer. The adhesive layer can enable the substance to be attached or adhered to any place where humidity sensing is needed, for example, the adhesive layer is a non-drying glue layer. The coated wire is positioned between the adhesive layer and the substrate. The adhesive layer not only serves as an adhesive, but also seals the coated leads and the electrochemical media between the adhesive layer and the substrate. When the electrochemical humidity sensor is used, liquid reaches the humidity detection part S to humidify the electrochemical medium only through the base material, so that misleading of an electrode and misjudgment of liquid quantity caused by the fact that the liquid directly reaches the humidity detection part S without being absorbed by the base material due to liquidity of the liquid are avoided. The electrochemical medium is higher than the electrode, and the adhesion layer covers the electrochemical medium and the electrode.

Release sheet layer

In some embodiments, as shown in fig. 2 and 7, a release sheet layer is detachably attached to the adhesive layer. The release sheet layer is a resin film. The release sheet layer completely covers the substrate, a free separation section is arranged between the release sheet layer and the substrate, and the adhesion layer covers the area of the substrate except the free separation section. The free separation section facilitates separation of the release sheet layer from the substrate.

Moisture sensor coiled material

In some embodiments, a separation mark is provided between two adjacent humidity sensors. The separation mark is a crease, or a tear line, etc.

In some embodiments, the moisture sensor in the web includes a substrate, a coated wire, a moisture sensing portion S, and an electrochemical media. When the humidity sensor is used, one humidity sensor is taken down, and the humidity sensor is attached to an object to be tested through bonding or other modes.

In some embodiments, the moisture sensor in the web includes a substrate, a coated wire, a moisture sensing portion S, an electrochemical medium, an adhesive layer, and a release sheet layer. When the humidity sensor is used, the humidity sensor is taken down, and the adhesion layer is used for attaching the humidity sensor to an object to be tested after the release sheet body layer is torn.

Accomodate the lapping with a plurality of humidity transducer, transportation, storage and accomodate the convenience.

Humidity sensor strip

In some embodiments, the demarcation line is an intermittently connected tear line to facilitate access to a single wetness sensor.

Example 1

As shown in fig. 1, 2, 3, 4 and 5, the humidity sensor of the invention is a humidity detecting unit S, and as shown in fig. 1, 2, 3, 4 and 5, the humidity sensor 100 of the invention includes: a base material 1 and a plurality of humidity detection units ST1. The substrate 1 has a front surface 11 and a back surface 12 facing each other, and the humidity detection units ST1 are arranged side by side on the front surface 11 of the substrate 1.

Each humidity detection portion ST1 includes a conductive silver paste layer 2, a carbon paste layer 3b, and an electrochemical mediator electrochemical media 4.

The conductive silver adhesive layer 2 includes two conductive segments 21 spaced from each other, and a moisture absorption hole 211 is formed between the two conductive segments 21, so that the two conductive segments 21 of the conductive silver adhesive layer 2 can be separated from each other by the moisture absorption hole 211 and cannot be conducted temporarily.

The carbon adhesive layer 3b covers the conductive silver adhesive layer 2 and is provided with one, and the moisture absorption holes 211 and the moisture absorption holes S are combined with each other. The present invention is not limited to the structure of the moisture absorption holes 211 and the combination of the moisture absorption holes 211, and in this embodiment, the moisture absorption holes S are formed by connecting the moisture absorption holes 211 in a straight line. Wherein the carbon adhesive layer 3b having conductivity is used to protect the conductive silver adhesive layer 2 from oxidation.

The electrochemical medium 4 is correspondingly filled in the moisture absorption hole S, so that the electrochemical medium 4 is connected between the two conductive segments 21 and correspondingly connected to the carbon adhesive layer 3b, and at this time, since moisture is not absorbed yet, conduction is not achieved, as described in the following.

The electrochemical medium 4 is a material that can chemically change upon exposure to moisture and produce an excellent conductive material, and in this embodiment, a hydrophilic polymer having at least one polar or charged functional group is illustrated as an example, such that the electrochemical medium 4 has active hygroscopicity. Often contain hydrophilic functional groups in the polymer backbone or side chains, including but not limited to CONH2-, -OH, -CONH, -COOH, -SO ₃ H、－NH ₂ . For example, acrylics include, but are not limited to, acrylic acid, acrylamide, polyethylene, and the like, as well as copolymers modified or formed from the above-described polymer precursors copolymerized with one another. Amine functional polymers include, but are not limited to, allylamine, ethyleneimine, enol, and other polymers containing amine groups in their main or side chains.

Therefore, when the humidity detection portion ST1 of the present invention encounters a liquid (not shown), the electrochemical medium 4 absorbs the liquid through the moisture absorption hole S to absorb moisture actively, and after moisture absorption, chemical changes occur and generate an excellent conductive substance, and further the conductive silver layer 2 is conducted between the two conductive segments 21 and the carbon adhesive layer 3b is conducted, so that a conductive loop is formed by the conductive silver adhesive layer 2. At this time, if a receiver 7 (see fig. 5) is electrically connected between the two conductive segments 21 of the conductive loop, the receiver 7 will be turned on to emit sound, light or sound and light prompting or warning signals, and even wirelessly transmit the signals to, for example, a smart phone for notification and warning.

In order to facilitate the attachment of the humidity sensor on the object to be detected, the invention can arrange an adhesive layer 5 and a release sheet body layer 6 on the substrate and the coating lead. The shape of the humidity sensor 100 is not limited in the present invention, and a straight strip (see fig. 1 or fig. 3) is taken as an example for description in the present embodiment.

The substrate 1 can be any object having water absorption property and used for supporting other structural layers, and in this embodiment, the water absorption paper made of plant fiber is taken as an example for illustration.

The conductive silver paste layers 2 of the humidity detection units ST1 are stacked on the front surface 11 of the base material 1 in parallel with each other, and the moisture absorption holes 211 communicate with the base material 1. It must be noted (as shown in figures 1 and 3): the two conductive segments 21 are not limited in the present invention, except that the conductive silver paste layer 2 itself is in a main line (or called main line) form to represent the two conductive segments 21, and certainly, the two conductive segments 21 can also be in a branch line form to represent the two conductive segments 21, in the present embodiment, the main line and the branch line are used in a mixed manner as an example for illustration, and the conductive silver paste layer 2 further includes a plurality of pairs of conductive segments 21 as shown in the figure.

The carbon adhesive layer 3b covers the conductive silver adhesive layers 2 of all the humidity detection portions ST1, and a corresponding number of moisture absorption holes 211 corresponding to each humidity detection portion ST1 are formed, so that a plurality of moisture absorption holes S are formed together.

The electrochemical media 4 are correspondingly filled in the moisture absorption holes S of the humidity detection parts ST1 and respectively connected between each pair of conductive segments 21.

The adhesion layer 5 is disposed on the carbon adhesive layer 3b, so that the humidity sensor 100 can be attached or adhered to any place where humidity sensing is needed, for example, a raincoat, a diaper, or a place where water leakage or rain leakage is to be known. The adhesive layer 5 and the carbon glue layer 3b are opened together. In addition, the adhesive layer 5 can be any material with adhesive property, and in this embodiment, the water glue is taken as an example for illustration.

The release sheet layer 6 is detachably attached and adhered to the adhesive layer 5, and the release sheet layer 6 is torn off when the humidity sensor 100 of the present invention is to be adhered. It should be noted that the height of the electrochemical medium 4 after filling is preferably higher than (or equal to) the carbon glue layer 3b and lower than the adhesive layer 5 (as shown in fig. 2), so as to form a break on the outer surface of the adhesive layer 5.

In addition, the conductive silver paste layer 2 may have various shapes, and in the embodiment, a designed pattern layer (not labeled with a reference numeral) is taken as an example for illustration, and any number of the pattern layers are spaced apart from each other and arranged side by side to form a large-area sensing region, respectively, and the end portions are gathered to form a connecting portion 22 (see fig. 1) for electrically connecting to the receiver 7 shown in fig. 5. For example, as shown in fig. 1 and fig. 3, a plurality of first large-area sensing regions A1 and a second large-area sensing region A2 are simultaneously and circularly gathered around a main sensing region (in the case of a diaper, refer to a region corresponding to a urination organ of a human body), and a circular fifth large-area sensing region A5 is surrounded therein, and the detailed shapes of the first and second large-area sensing regions A1 and A2 are elongated and protruding teeth which are alternately arranged, and the fifth large-area sensing region A5 is a combination of a circle and a star-shaped polygon; a fourth large-area sensing area A4 can be formed by two vortex shapes which are staggered at intervals at another main sensing part (in the case of a diaper, the part corresponding to the defecation organ of the human body); a third large-area sensing region A3 can be formed between the two main sensing portions.

Therefore, the present invention can include a plurality of large-area sensing areas (first to fifth large-area sensing areas A1 to A5) to respectively send out warning according to the conduction of each area, so that the user or notified person can clearly know the wet range or wet degree.

Example 2

As shown in fig. 6, the humidity detecting unit ST1 and the embodiment 2 of the humidity sensor 100 having the module T1 according to the present invention are shown, and the embodiment 2 is substantially the same as the first embodiment, and the overall shape is changed from the straight strip shape of the first embodiment to the L-shaped folded shape of the embodiment 2. The rest of the structure, such as the humidity detection section S, is the same as in example 1.

Example 3

Referring to fig. 7, a humidity sensor 100 according to a third embodiment of the present invention is shown with a humidity detecting unit ST2 and a module T2, which is substantially the same as the first embodiment or the second embodiment 2, except that the structures of the protective layer 3 and the electrochemical medium 4 are different, and a single humidity detecting unit ST2 is taken as an example for detailed description.

The carbon adhesive layer 3b has two carbon adhesive portions 32 respectively covering the two conductive segments 21, and the two carbon adhesive portions 32 are formed therebetween, so that the two conductive segments 21 are spaced apart from each other by the two carbon adhesive portions 32, and the adhesive layer 5 and the carbon adhesive layer 3b are formed together. The moisture absorption holes 211 are surrounded, so that the electrochemical medium 4 can only be filled in.

It should be noted that the carbon glue layer 3b is also conductive, and since the carbon glue portion 32 covers the conductive segments 21, the conductive sequence of the third embodiment is that the carbon glue layer 3b is first and the conductive silver glue layer 2 is second, so that when the electrochemical medium 4 absorbs moisture, the two conductive segments 21 can be conducted through the two carbon glue portions 32. In other words, the carbon paste layer 3b has both protective and conductive effects, and the main function of the conductive silver paste layer 2 is to enhance the signal in the third embodiment.

The electrochemical medium 4 includes a filling portion 41 and a bridging portion 42 connected to each other, the filling portion 41 is filled in the moisture absorption hole S and is adjacent to one side of the carbon paste portion 32 (for example, fig. 7 indicates the left side and the right side of the carbon paste portion 32), and the bridging portion 42 extends between the adhesive layer 5 and the carbon paste layer 3b to bridge the carbon paste portion 32 and is adjacent to the other side of the carbon paste portion 32 (for example, fig. 7 indicates the top side of the carbon paste portion 32). The rest of the structure was the same as in example 1.

Example 4

As shown in fig. 8, the humidity sensor includes a substrate including an insulator substrate, the substrate having a coated lead and at least 1 humidity sensing portion S, each humidity sensing portion S having at least two electrodes, each electrode being connected to a respective coated lead, and an electrochemical medium between the electrodes that is dry-insulated and wet-conductive. The coated lead is a conductive wire which is arranged on the substrate by printing or coating by using conductive adhesive (such as conductive silver adhesive and conductive carbon adhesive) or biochemical ink and the like.

The coated wire is formed in a pattern having at least one expanded area having 1 or more humidity sensing parts S. The humidity detection parts S are arranged at intervals along the length direction of the base material in the expansion area, or arranged at intervals along the width direction of the base material, or the humidity detection parts S are arranged at intervals along the length direction and the humidity detection parts S are arranged at intervals along the width direction. As shown in fig. 8, there are two rounded enlargements, the first being forward and the second being rearward. The first swelling part is larger than the second swelling part in diameter, the first swelling part is provided with humidity detection parts S which are distributed at intervals along the width direction, and the second swelling part is provided with humidity detection parts S which are distributed at intervals along the length direction.

The expanded region corresponds to an expanded portion on the substrate. Or the substrate is a strip with the same width, and only the pattern formed by the coating wires has an expanded area. The center of the expansion area is provided with a humidity detection part S. The provision of the enlarged region serves to improve the detection of the moisture range in the region of liquid concentration. Example 4 compared to example 1, the coated wire was designed with a simplified pattern of layers (not labeled) in both shape and number to have a cost reduction effect, but still have a substantial moisture response.

The humidity detectors S are disposed in the region other than the enlarged portion along the longitudinal direction of the base material.

Each of the wires has parallel sections parallel to the substrate. One end of the parallel section is a signal terminal. The signal terminal is used for connecting current. The wires from the first coated wire to the last coated wire are numbered with natural numbers, and a humidity detection part S is arranged between adjacent odd-numbered wires or a humidity detection part S is arranged between adjacent even-numbered wires. Therefore, the area utilization rate of the base material is highest, each lead is effectively utilized, the humidity detection parts S with the largest quantity are obtained, and the humidity detection range is enlarged.

The structure was the same as in one of examples 1 to 3 except for the shape and number of the coated wires.

Example 5

As shown in fig. 9, the humidity sensor of the present embodiment is different from embodiment 4 in that both of the enlarged portions formed by the coated wire are formed in an elliptical shape, and the major axis of the enlarged portion is along the length direction of the base material. The first swelling part has a plurality of humidity detection parts S arranged at intervals in the length direction. The second swelling part has a plurality of humidity detection parts S which are not arranged at intervals in the longitudinal direction.

The expanded part is set to be oval, the width of the coating wire pattern is reduced, and compared with the embodiment 4, paper materials are further saved. The structure was the same as in example 4 except for the shape of the enlarged portion.

Each of the conductive wires has a parallel section parallel to the substrate. One end of the parallel section is a signal terminal. The signal terminal is used for connecting current. The wires from the first coated wire to the last coated wire are numbered in natural numbers, and a humidity detection part S is arranged between adjacent odd-numbered wires or a humidity detection part S is arranged between adjacent even-numbered wires. Therefore, the area utilization rate of the base material is highest, each conducting wire is effectively utilized, the maximum quantity of humidity detection parts S are obtained, and the humidity detection range is enlarged.

The embodiment difference is only that the coated wire is designed into a pattern layer (not marked with reference number) with simplified shape and number, so as to have the effect of reducing the cost, but still have basic humidity sensing.

Example 6

As shown in fig. 12, the humidity sensor includes an insulator substrate having a plurality of humidity sensing portions S each having at least two electrodes, each electrode being connected to a respective coated wire, and an electrochemical medium between the electrodes, which is dry-insulated and wet-conductive.

Each electrode comprises a polar plate connected with a lead, an electrochemical medium is arranged between the two polar plates, and the polar plates are conductive adhesive coatings (such as a carbon adhesive layer or a silver adhesive layer formed by screen printing). The two electrode plates of the humidity detection unit S face each other. Comb teeth are distributed along the polar plate, and tooth grooves are formed between every two adjacent comb teeth; the comb teeth of the two electrodes are opposite. In the humidity detection part S, comb teeth of one electrode are inserted into tooth grooves of the other electrode, the position between adjacent comb teeth is a tooth groove, a gap is formed between the two electrodes, and an electrochemical medium is filled in the gap between the electrodes. The comb teeth increase the sensing area of the electrode, and as long as an electrochemical medium between a pair of comb teeth in the two electrodes is wetted, an electric signal can be output, so that the sensitivity of humidity sensing is improved. And a part of the coated lead is used as a polar plate, or the polar plate is overlapped with the coated lead, or the polar plate is positioned at the end of the coated lead, or the polar plate is connected with the end of the coated lead.

The two electrodes are located in the same layer. The electrochemical medium partially or completely covers the electrodes. During manufacturing, the electrochemical medium solution is dripped into the humidity detection part S and then dried, so that the electrochemical medium is in an insulation state.

The base material is a strip-shaped absorbent paper having an equal width, and the humidity detection units S are spaced apart from each other in the longitudinal direction of the base material.

The substrate includes detection section and signal connection section, and the sense terminal is located to humidity detection portion S, and signal connection section is located to the signal input terminal, and the detection section is the contained angle with the signal connection section. The detection section is orthogonal to the signal connection section. The base material has at least one swelling portion having one or more humidity detection portions S.

The front surface of the base material is provided with a coating wire, and the back surface of the base material is printed with patterns. The pattern is printed with a material that develops color when it encounters water. After the base material absorbs liquid, the patterns appear, and the effects of beauty and indication are achieved.

The coated wire extends along the length of the substrate. Two wires at the outermost side are straight line segments parallel to the base material respectively. Each of the conductive wires has a parallel section parallel to the substrate. One end of the parallel section is a signal terminal. The signal terminal is used for connecting current. The wires from the first coated wire to the last coated wire are numbered with natural numbers, and a humidity detection part S is arranged between adjacent odd-numbered wires or a humidity detection part S is arranged between adjacent even-numbered wires. Therefore, the area utilization rate of the base material is highest, each lead is effectively utilized, the humidity detection parts S with the largest quantity are obtained, and the humidity detection range is enlarged.

The humidity sensor has an adhesive layer. The adhesive layer can enable the substance to be attached or adhered to any place where humidity sensing is needed, for example, the adhesive layer is a non-drying glue layer. The coated wire is positioned between the adhesive layer and the substrate. The adhesive layer not only serves as an adhesive, but also seals the coated leads and the electrochemical media between the adhesive layer and the substrate. When the electrochemical humidity sensor is used, liquid reaches the humidity detection part S to humidify the electrochemical medium only through the base material, so that misleading of an electrode and misjudgment of liquid quantity caused by the fact that the liquid directly reaches the humidity detection part S without being absorbed by the base material due to liquidity of the liquid are avoided. The electrochemical medium is higher than the electrode, and the adhesion layer covers the electrochemical medium and the electrode.

A release sheet layer is detachably attached to the adhesive layer. The release sheet layer is a resin film. The release sheet layer completely covers the substrate, a free separation section is arranged between the release sheet layer and the substrate, and the adhesion layer covers the region of the substrate except the free separation section. The free separation section facilitates separation of the release sheet layer from the substrate.

Further, since the carbon paste layer 3b in the foregoing embodiment has a function of protecting the conductive silver paste layer 2, it can be a protective layer 3 (see fig. 2 and 7) for protecting the conductive silver paste layer 2. Furthermore, the

humidity sensors

100 and 100a of embodiments 1 to 6 may also be provided in a plurality of sets connected in series, and preferably wound in a bundle in a belt-type design; moreover, the connection between any two

adjacent humidity sensors

100, 100a is designed to be tearable, so as to facilitate tearing off a section of the

humidity sensor

100, 100a when the user wants to use it.

As shown in fig. 5, there are various electrical connection methods between the connection portion 22 and the receiver 7 of the

humidity sensors

100, 100a according to the present invention, which are not limited in the present invention, and only one example thereof is described below.

As shown in fig. 10 and 11 in conjunction with fig. 5, a plurality of conductive contacts 221 are disposed on one surface of the connecting portion 22, and the conductive contacts 221 are electrically connected to the conductive silver paste layer 2. An electrical connection structure 71 is disposed inside the receiver 7, and the

humidity sensors

100 and 100a are electrically connected to the electrical connection structure 71 of the receiver 7 through the connection portion 22.

The electrical connection structure 71 includes a first structure member 711 and a second structure member 712 clamped to each other. The first structure 711 is configured with a plurality of conductive terminals 713 and a plurality of first magnetic attraction pieces 714, and the second structure 712 is configured with a plurality of second magnetic attraction pieces 715. Each conductive terminal 713 corresponds to each conductive contact 221, and each first magnetic attraction element 714 corresponds to each second magnetic attraction element 715. Thus, the first structure member 711 and the second structure member 712 can be clamped by the magnetic attraction between the first magnetic part 714 and the second magnetic part 715, and the connecting portion 22 is clamped between the first structure member 711 and the second structure member 712, such that the conductive terminals 713 are correspondingly connected to the conductive points 221 and electrically conducted with each other.

The first structural member 711 and the second structural member 712 can be positioned by magnetic attraction as shown in the figure, but may also be positioned by other methods such as a snap fit or a tight fit, which is not limited in the present invention.

Preferably, an insertion groove 716 is formed on the clamping surface of the first structural member 711 or the second structural member 712, and the connecting portion 22 is inserted into the insertion groove 716, so that the relative clamping of the first structural member 711 and the second structural member 712 is not interfered by the connecting portion 22. Furthermore, a blocking body 717 can be protruded in the embedding slot 716, and the connecting portion 22 is provided with a hole 222 corresponding to the blocking body 717, so that the connecting portion 22 embedded in the embedding slot 716 can be blocked by the blocking body 717 and is not pulled out or shifted by mistake.

The humidity detection parts S are provided with a plurality of parts, each humidity detection part S sends out a conduction signal when being conducted, and the plurality of humidity detection parts S send out an accumulated conduction signal when being conducted. For example, the on signal is a buzzer sound, and when only one humidity detection unit S is on, a single buzzer sound is emitted per unit time. When two humidity detection parts S are conducted, two buzzes are emitted in unit time; when N humidity detection parts S are conducted, N buzzes are generated in unit time. Alternatively, when one humidity detection unit S is turned on, a buzzer sound of one unit intensity is generated, and when N humidity detection units S are turned on, a buzzer sound of N × unit intensity is generated. The conducting signal can also be an optical signal and is transmitted to a reminding signal lamp of the terminal. The conduction number of the humidity detection section S represents the liquid amount and the humidity diffusion range.

Each coated wire is connected with at least one electrode of the humidity detection part S. When a plurality of humidity detection parts S are connected to the same coating lead, the electrochemical medium of the humidity detection part S which is not wetted by liquid is an insulator, only the current is on the current coating lead, and the lead connected with the other electrode of the humidity detection part S which is not wetted by liquid does not form a loop with the current coating lead, so that the plurality of humidity detection parts S arranged on one coating lead can not cause signal interference, and the area of the base material can be saved.

All patents and publications mentioned in the specification of the invention are indicative of the techniques disclosed in the art to which this invention pertains and are intended to be applicable. All patents and publications cited herein are hereby incorporated by reference to the same extent as if each individual publication were specifically and individually indicated to be incorporated by reference. The invention described herein may be practiced in the absence of any element or elements, limitation or limitations, which limitation or limitations is not specifically disclosed herein. For example, in each of the examples herein, the terms "comprising", "consisting essentially of \8230; …" and "consisting of \8230;" may be replaced by the remaining 2 terms of either one of the two. The terms and expressions which have been employed herein are used as terms of description and not of limitation, and there is no intention in the use of such terms and expressions of excluding any equivalents of the features shown and described, but it is recognized that various modifications are possible within the scope of the invention and the claims which follow. It is to be understood that the embodiments described herein are preferred embodiments and features and that modifications and variations may be made by one skilled in the art in light of the teachings of this disclosure, and are to be considered within the purview and scope of this invention and the scope of the appended claims and their equivalents.

Claims

1. A humidity sensor, comprising: the humidity detection part S comprises a conductive silver glue layer and a carbon glue layer, the conductive silver glue layer comprises two conductive electrodes which are spaced from each other, moisture absorption holes are formed between the two conductive electrodes, and the carbon glue layer covers the conductive electrodes respectively to protect the conductive silver glue layer from being oxidized; the electrochemical medium comprises a filling part and a span part which are connected with each other, wherein the filling part is filled in the moisture absorption hole, is connected between the two conductive electrodes and is correspondingly connected to one side of the carbon adhesive layer, and the span part extends out of the moisture absorption hole, is connected between the two conductive electrodes and is correspondingly connected to the other side of the carbon adhesive layer.

2. The humidity sensor according to claim 1, wherein the humidity detection portions S are plural, each of the humidity detection portions S generates an on signal when turned on, and the plural humidity detection portions S generate an accumulated on signal when turned on.

3. The humidity sensor according to claim 1, wherein each of the coated wires is connected to an electrode of at least one humidity sensing part S.

4. The wetness sensor of claim 1 wherein the substrate is a water-absorbent or hygroscopic tape.

5. The humidity sensor according to claim 1, wherein the base material is a strip-shaped absorbent paper having an equal width, and the humidity sensing parts S are arranged at intervals along a longitudinal direction of the base material.

6. The humidity sensor according to claim 1, wherein the substrate comprises a detection section and a signal connection section, the humidity detection portion S is disposed at the detection end, the signal input terminal is disposed at the signal connection section, and the detection section and the signal connection section form an included angle; alternatively, the detection segment is orthogonal to the signal connection segment.

7. The humidity sensor according to claim 1, wherein the substrate is provided with positioning holes, and the positioning holes are staggered from the coating conductor and the humidity detecting part S.

8. The moisture sensor of claim 1 wherein the front surface of the substrate is provided with coated conductive traces and the back surface of the substrate is printed with a pattern printed with a water-developable material.

9. The humidity sensor according to claim 1, wherein the humidity sensor has an adhesive layer; or a release sheet layer is detachably attached to the adhesive layer; or the release sheet layer completely covers the substrate, a free separation section is arranged between the release sheet layer and the substrate, and the adhesion layer covers the area of the substrate except the free separation section.

10. The humidity sensor of claim 1, wherein the portion of the substrate having the electrochemical media has a greater electrical conductivity than the electrical conductivity of the substrate when the substrate is wetted.

11. The moisture sensor of claim 1 wherein the substrate has a portion that does not include the electrochemical media and a portion of the substrate that includes the electrochemical media, wherein the portion of the substrate that does not include the electrochemical media is less conductive than the portion of the substrate that includes the electrochemical media when the substrate is wetted.

12. The wetness sensor of claim 1 wherein the substrate has a portion that does not include the electrochemical media and a portion of the substrate that includes the electrochemical media, wherein the substrate, when dry, has an electrical conductivity equal to the portion of the substrate that includes the electrochemical media.

13. The humidity sensor of claim 1, wherein the substrate is an insulator.

14. The humidity sensor of claim 1, wherein said coating is a carbon coating.

15. The humidity sensor of claim 1, wherein said coating is a carbon coating; and/or the material of the electrode is a carbon electrode.