JP2002071584A - Diaper wetting detecting method and device therefor - Google Patents

Diaper wetting detecting method and device therefor

Info

Publication number
JP2002071584A
JP2002071584A JP2000258385A JP2000258385A JP2002071584A JP 2002071584 A JP2002071584 A JP 2002071584A JP 2000258385 A JP2000258385 A JP 2000258385A JP 2000258385 A JP2000258385 A JP 2000258385A JP 2002071584 A JP2002071584 A JP 2002071584A
Authority
JP
Japan
Prior art keywords
detection
diaper
resonance circuit
resonance
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2000258385A
Other languages
Japanese (ja)
Inventor
Takao Ota
孝夫 太田
Masaji Sumiyoshi
正司 住吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEL KK
Original Assignee
SEL KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SEL KK filed Critical SEL KK
Priority to JP2000258385A priority Critical patent/JP2002071584A/en
Publication of JP2002071584A publication Critical patent/JP2002071584A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm

Landscapes

  • Emergency Alarm Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

PROBLEM TO BE SOLVED: To detect diaper wetting without attaching a device to a diaper. SOLUTION: A resonance circuit 1 for detection is arranged inside a chair 25 correspondingly to a detection location at which the diaper is located when a diaper-wearing person is seated on the insulating sheet 27 of the chair 25. A coil 9 is arranged at a predetermined interval opposite to the resonance circuit 1 for detection. As the resonance frequency of the resonance circuit 1 for detection is different due to the difference of moisture contents in the ambient environment of the resonance circuit 1 for detection when the diaper located at the detection location is wet and not wet, electromagnetic waves for detection in the vicinity of the resonance frequency of the resonance circuit 1 for detection are transmitted from the coil 9 by a detector 3 to detect diaper wetting by whether electromagnetic coupling occurs between the resonance circuit 1 for detection and the coil 9 or not.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、共振回路を用いた
おむつ濡れ検知方法及びおむつ濡れ検知装置に関するも
のである。本発明にかかるおむつ濡れ検知方法及びおむ
つ濡れ検知装置は、例えば介護を必要とする人に使用し
ているおむつが排尿等により濡れたことを検知して介護
者などに知らせるのに使用される。
The present invention relates to a diaper wetness detection method and a diaper wetness detection device using a resonance circuit. INDUSTRIAL APPLICABILITY The diaper wetness detection method and diaper wetness detection device according to the present invention are used, for example, to detect that a diaper used by a person in need of nursing has become wet due to urination or the like and to notify a caregiver or the like.

【0002】[0002]

【従来の技術】近年の急速な高齢化にともなって、要介
護老人の尿・便失禁に関する介護負荷はますます増大し
てきている。そこで、介護者の負担を軽減すべく、おむ
つ装着者の失禁の有無を電気的な変化により検知して介
護者に知らせるおむつ濡れ検知装置が数多く提案されて
いる。例えば、一対の電極を僅か離して並べて付着形成
して両電極間に静電容量を形成し、おむつが濡れたとき
静電容量が変化するおむつの濡れ検知センサと、この濡
れ検知センサの電極に交流信号を印加する発振器と、一
対の電極間の静電容量の変化を捉える検知器と、この検
知器の出力信号によって作動するバイブレータもしくは
ブザーから構成されるおむつ濡れ報知装置が提案されて
いる(特開平9−220259号公報参照)。この装置
では、おむつ装着者が排泄しておむつが濡れると、おむ
つの濡れ検知センサに設けられた電極間の静電容量が変
化し、その静電容量の変化に起因してバイブレータもし
くはブザーが作動することにより介護者にこれを報知す
る。
2. Description of the Related Art With the rapid aging of the population in recent years, the burden of nursing care on urinary and fecal incontinence of elderly people requiring care has been increasing. Therefore, in order to reduce the burden on the caregiver, many diaper wetness detection devices have been proposed which detect the presence or absence of incontinence of the diaper wearer by an electrical change and notify the caregiver of the incontinence. For example, a pair of electrodes may be arranged side by side at a slight distance to form an electrostatic capacitance between the two electrodes, forming a capacitance between the two electrodes, and changing the capacitance when the diaper is wet. There has been proposed a diaper wetting notification device including an oscillator that applies an AC signal, a detector that captures a change in capacitance between a pair of electrodes, and a vibrator or buzzer that is activated by an output signal of this detector ( See JP-A-9-220259. In this device, when the diaper wearer excretes and the diaper gets wet, the capacitance between the electrodes provided on the diaper wetness detection sensor changes, and the vibrator or buzzer operates due to the change in the capacitance. To inform the caregiver of this.

【0003】[0003]

【発明が解決しようとする課題】しかし、上記のおむつ
濡れ報知装置は、濡れ検知センサや発振器、検知器、そ
れらを動作させるための電池など、おむつに何らかの装
置の装着を必要とする。そこで本発明は、おむつに装置
を装着することなくおむつ濡れを検知できるおむつ濡れ
検知方法及びおむつ濡れ検知装置を提供することを目的
とするものである。
However, the above-described diaper wetting notification device requires some device to be mounted on the diaper, such as a wetting detection sensor, an oscillator, a detector, and a battery for operating them. Therefore, an object of the present invention is to provide a diaper wetness detection method and a diaper wetness detection device capable of detecting diaper wetness without mounting the device on the diaper.

【0004】[0004]

【課題を解決するための手段】本発明にかかるおむつ濡
れ検知方法は、おむつ装着者のおむつが位置する検知位
置に検知用共振回路を配置し、おむつが検知位置に位置
するようにおむつ装着者を位置させ、検知用共振回路に
外部から検知用電磁波を印加して検知用共振回路の周辺
雰囲気の水分量変化に基づく検知用共振回路の共振周波
数の変化を検知することによりおむつ濡れを検知する。
According to the present invention, there is provided a diaper wetness detection method, wherein a detection resonance circuit is arranged at a detection position where the diaper of the diaper wearer is located, and the diaper wearer is positioned so that the diaper is located at the detection position. Diaper wetness is detected by applying a detection electromagnetic wave to the detection resonance circuit from the outside and detecting a change in the resonance frequency of the detection resonance circuit based on a change in the amount of moisture in the atmosphere around the detection resonance circuit. .

【0005】本発明にかかるおむつ濡れ検知装置は、お
むつ装着者がおむつを装着した状態でおむつが位置され
る検知位置に配置される検知用共振回路と、検知用共振
回路に一定の距離を保って固定されて検知用共振回路に
外部から検知用電磁波を印加する送受信器を有し、検知
用共振回路の周辺雰囲気の水分量変化に基づく検知用共
振回路の共振周波数の変化を検知することによりおむつ
濡れを検知する検知器とを備えたものである。
A diaper wetness detection device according to the present invention maintains a predetermined distance between a detection resonance circuit disposed at a detection position where a diaper is worn by a diaper wearer and a detection resonance circuit. And has a transmitter / receiver that applies a detection electromagnetic wave from the outside to the detection resonance circuit, and detects a change in the resonance frequency of the detection resonance circuit based on a change in the amount of moisture in the atmosphere around the detection resonance circuit. And a detector for detecting diaper wetness.

【0006】図1は共振回路の等価回路図である。共振
回路の共振周波数f0は下記の(1)式で表される。 f0=1/{2π(LC)1/2 } ・・・(1) ここで、Lは共振回路に設けられたコイルのインダクタ
ンス、Cは共振回路に設けられたコンデンサのキャパシ
タンスである。また、キャパシタンスCは下記の(2)
式で表される。 C=k・ε ・・・(2) ここでεは誘電率、kは形状などで決まる定数である。
FIG. 1 is an equivalent circuit diagram of a resonance circuit. The resonance frequency f 0 of the resonance circuit is expressed by the following equation (1). f 0 = 1 / {2π (LC) 1/2 } (1) where L is the inductance of the coil provided in the resonance circuit, and C is the capacitance of the capacitor provided in the resonance circuit. The capacitance C is expressed by the following (2)
It is expressed by an equation. C = k · ε (2) where ε is a dielectric constant, and k is a constant determined by the shape and the like.

【0007】検知用共振回路の周辺雰囲気の水分量が変
化すると、周辺雰囲気の誘電率εが変化し、検知用共振
回路に設けられたコンデンサのキャパシタンスCが変化
するので、検知用共振回路の共振周波数f0が変化す
る。すなわち、おむつを検知位置に位置させた場合に、
おむつが濡れているときと、濡れていないときとでは検
知用共振回路の共振周波数f0は異なる。そこで、その
共振周波数f0の変化を検知用共振回路に外部から検知
用電磁波を印加して検知することにより、おむつ濡れを
検知することができる。これにより、介護者はおむつを
開いて内部を目視により確認したり、おむつの中に手を
入れて感触により確認したりすることなく、おむつの濡
れを確認することができる。
When the amount of moisture in the surrounding atmosphere of the detection resonance circuit changes, the dielectric constant ε of the surrounding atmosphere changes, and the capacitance C of the capacitor provided in the detection resonance circuit changes. The frequency f 0 changes. That is, when the diaper is located at the detection position,
The resonance frequency f 0 of the detection resonance circuit differs between when the diaper is wet and when it is not wet. Therefore, by detecting the change in the resonance frequency f 0 by applying a detection electromagnetic wave from the outside to the detection resonance circuit, it is possible to detect diaper wetness. Thus, the caregiver can check the wetness of the diaper without opening the diaper and visually checking the inside, or without putting a hand in the diaper and checking by touch.

【0008】[0008]

【発明の実施の形態】検知用共振回路の一例として、誘
電体基板表面に導体パターンによりコイルが形成されて
なるものが挙げられる。そのような検知用共振回路を用
いたおむつ濡れ検知装置は、検知用共振回路のコイルと
送受信器が対向し、誘電体基板を外側にして固定され、
その基板表面がおむつ装着者の着座面となっていること
が好ましい。その結果、おむつ装着者を検知位置に座ら
せるだけでおむつ濡れを検知することができる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As an example of a detection resonance circuit, there is a detection circuit in which a coil is formed by a conductor pattern on the surface of a dielectric substrate. A diaper wetness detection device using such a resonance circuit for detection is fixed with the coil of the detection resonance circuit and the transceiver facing each other, with the dielectric substrate facing outside,
It is preferable that the substrate surface be a seating surface for a diaper wearer. As a result, it is possible to detect diaper wetness only by allowing the diaper wearer to sit at the detection position.

【0009】[0009]

【実施例】図2はおむつ濡れ検知装置の一実施例を示す
ブロック図である。検知用共振回路1と、予め設定され
た周波数の検知用電磁波をコイル(送受信器)9から検
知用共振回路1に向かって無線で印加し、その周波数で
の検知用共振回路1とコイル9の電磁結合の有無を検知
する検知器3が設けられている。ここで、検知用電磁波
は、1つの周波数であってもよいし、複数の異なる周波
数を用いてもよいし、所定周波数範囲内で経時的に変化
させてもよい。
FIG. 2 is a block diagram showing one embodiment of a diaper wetness detecting device. A detection resonance circuit 1 and a detection electromagnetic wave having a predetermined frequency are wirelessly applied from a coil (transmitter / receiver) 9 toward the detection resonance circuit 1, and the detection resonance circuit 1 and the coil 9 are applied at that frequency. A detector 3 for detecting the presence or absence of electromagnetic coupling is provided. Here, the electromagnetic wave for detection may be one frequency, a plurality of different frequencies may be used, or the frequency may be changed over time within a predetermined frequency range.

【0010】図3は検知用共振回路1の一実施例を示す
平面図である。検知用共振回路1は、誘電体基板5の一
表面に形成された渦巻き状の導電性材料パターン(導体
パターン)からなる平面状コイルにより構成されてい
る。この平面状コイルのインダクタンスLは渦巻き状パ
ターンの巻数と内側の距離rによって決定され、そのパ
ターン間にキャパシタンスCが形成される。平面状コイ
ルからなる検知用共振回路1の通常状態(周辺雰囲気が
乾燥している状態)における共振周波数をf1とする。
おむつ濡れ検知状態(周辺雰囲気に水分が存在する状
態)における共振周波数は検知用共振回路1の周辺雰囲
気の水分密度に依存して変化するので、必ずしも1点で
はない。
FIG. 3 is a plan view showing one embodiment of the resonance circuit 1 for detection. The detection resonance circuit 1 is configured by a planar coil formed of a spiral conductive material pattern (conductor pattern) formed on one surface of the dielectric substrate 5. The inductance L of the planar coil is determined by the number of turns of the spiral pattern and the inner distance r, and a capacitance C is formed between the patterns. Normal state of the detection resonant circuit 1 consisting of the planar coil resonance frequency in (near atmosphere state is dry) and f 1.
The resonance frequency in the diaper wetness detection state (a state in which moisture is present in the surrounding atmosphere) changes depending on the moisture density of the surrounding atmosphere of the detection resonance circuit 1, and is not necessarily one point.

【0011】図4は、検知器3の一実施例を示すブロッ
ク図である。検知用共振回路1のおむつ濡れ検知状態に
おける共振周波数付近の周波数f2の検知用電磁波をコ
イル9から発振する高周波発振回路部11が設けられて
いる。コイル9における検知用電磁波の出力を高周波発
振回路部11を介して直流電圧に変換する検波回路部1
3が設けられている。検波回路部13からの直流電圧を
増幅する直流電圧増幅回路部15が設けられており、増
幅された直流電圧はレベル比較回路部17及び出力レベ
ルメータ19に送られる。レベル比較回路部17には基
準レベルLVthが設定されている。レベル比較回路部1
7にはレベル比較回路部17のレベル比較結果を表示す
る表示部21が接続されている。
FIG. 4 is a block diagram showing one embodiment of the detector 3. A high-frequency oscillation circuit section 11 that oscillates an electromagnetic wave for detection at a frequency f 2 near the resonance frequency of the detection resonance circuit 1 in the diaper wetness detection state from the coil 9 is provided. A detection circuit unit 1 for converting the output of the electromagnetic wave for detection in the coil 9 into a DC voltage via a high-frequency oscillation circuit unit 11
3 are provided. A DC voltage amplifying circuit section 15 for amplifying a DC voltage from the detection circuit section 13 is provided, and the amplified DC voltage is sent to a level comparing circuit section 17 and an output level meter 19. A reference level LVth is set in the level comparison circuit section 17. Level comparison circuit 1
7 is connected to a display section 21 for displaying a level comparison result of the level comparison circuit section 17.

【0012】図5はおむつ濡れ検知装置の一実施例を示
す斜視図である。検知用共振回路1と誘電体基板7の一
表面に形成されたコイル9が対向するようにして誘電体
基板5と誘電体基板7が配置されている。誘電体基板5
と誘電体基板7は支持部材10により所定の間隔をもっ
て固定されている。以下、検知用共振回路1、誘電体基
板5、コイル9、誘電体基板7及び支持部材10をまと
めて検知ブロック2という。
FIG. 5 is a perspective view showing one embodiment of a diaper wetness detecting device. The dielectric substrate 5 and the dielectric substrate 7 are arranged so that the detection resonance circuit 1 and the coil 9 formed on one surface of the dielectric substrate 7 face each other. Dielectric substrate 5
And the dielectric substrate 7 are fixed by a support member 10 at a predetermined interval. Hereinafter, the detection resonance circuit 1, the dielectric substrate 5, the coil 9, the dielectric substrate 7, and the support member 10 are collectively referred to as a detection block 2.

【0013】コイル9は検知器3を構成する筐体23の
内部に設けられた高周波発信回路部11に接続されてい
る。高周波発信回路部11はコイル9から周波数f2
電磁波を発信するように設計されている。筐体23の表
面には出力レベルメータ19を設置する窓と、表示部2
1を構成する3つのランプを設置する窓が形成されてい
る。この実施例では、筐体23の内部に設けられたレベ
ル比較回路部17に3段階の基準レベルLVthが設定さ
れており、検知用共振回路1とコイル9の電磁結合が大
きいほど点灯するランプ数が多くなるように設定されて
いる。
The coil 9 is connected to a high-frequency transmission circuit 11 provided inside a housing 23 constituting the detector 3. The high-frequency transmission circuit section 11 is designed to transmit an electromagnetic wave having a frequency f 2 from the coil 9. A window for installing the output level meter 19 and a display unit 2
A window is provided for installing three lamps that constitute one. In this embodiment, three levels of reference levels LVth are set in the level comparison circuit section 17 provided inside the housing 23, and the number of lamps to be turned on as the electromagnetic coupling between the detection resonance circuit 1 and the coil 9 increases. Is set to increase.

【0014】図6は図5の実施例を椅子に設置した例を
示す一部切り欠いた斜視図である。椅子25の座面には
水分非透過性の絶縁シート27が張られている。絶縁シ
ート27のおむつ装着者が着座したときにおむつが位置
する検知位置に対応して、椅子25の内部に検知ブロッ
ク2が設置されている。検知ブロック2は検知用共振回
路1が形成された誘電体基板5が座面27側に位置して
配置されている。椅子25の側面には検知器3の筐体2
3が設置されている。
FIG. 6 is a partially cutaway perspective view showing an example in which the embodiment of FIG. 5 is installed on a chair. The seat 25 of the chair 25 is provided with an insulating sheet 27 impermeable to moisture. The detection block 2 is installed inside the chair 25 corresponding to the detection position where the diaper is located when the diaper wearer of the insulating sheet 27 is seated. In the detection block 2, the dielectric substrate 5 on which the detection resonance circuit 1 is formed is arranged on the seat surface 27 side. On the side of the chair 25, the housing 2 of the detector 3
3 are installed.

【0015】図1から図6を参照しておむつ濡れ検知動
作を説明する。検知位置におむつが位置するようにおむ
つ装着者が椅子25の座面27に着座される。おむつの
濡れを検知するとき、高周波発振回路部11はコイル9
から検知用共振回路1に向かって周波数f2の検知用電
磁波を放出する。その出力レベルを検波回路部13によ
り直流電圧に変換し、その直流電圧を直流電圧増幅回路
部15により増幅してレベル比較回路部17及び出力レ
ベルメータ19に送る。レベル比較回路部17では検知
動作時の直流電圧と基準レベルLVthを比較する。
The operation of detecting diaper wetness will be described with reference to FIGS. The diaper wearer is seated on the seating surface 27 of the chair 25 so that the diaper is located at the detection position. When detecting wetness of the diaper, the high-frequency oscillation circuit 11
Then, a detection electromagnetic wave having a frequency f 2 is emitted toward the detection resonance circuit 1. The output level is converted into a DC voltage by the detection circuit section 13, and the DC voltage is amplified by the DC voltage amplification circuit section 15 and sent to the level comparison circuit section 17 and the output level meter 19. The level comparison circuit section 17 compares the DC voltage at the time of the detection operation with the reference level LVth.

【0016】図7は検知器3の検知出力レベルと発振周
波数の関係を示す波形図である。縦軸は検知出力レベル
を示し、横軸は発振周波数を示す。検知用共振回路1の
周辺雰囲気が乾燥した通常状態のとき、検知用共振回路
1の共振周波数は周波数f1であり、検知用共振回路1
とコイル9の間で生じる電磁結合により、発振周波数f
1において検知出力レベルがLV1から落ち込む(破線
の波形参照)。検知出力レベルが落ち込む発振周波数を
ディップ点という。検知用共振回路1の周辺雰囲気がお
むつ濡れ検知状態のとき、検知用共振回路1のキャパシ
タンスCの値が通常状態と比べて変化し、例えば共振周
波数がf1からf2に変化する。したがって、検知器3の
検知出力レベルがLV1からLV2に落ち込むディップ
点は発振周波数f2である(実線の波形参照)。ここ
で、3段階の基準レベルLVthはLV1とLV2の間に
設定されている。
FIG. 7 is a waveform diagram showing the relationship between the detection output level of the detector 3 and the oscillation frequency. The vertical axis indicates the detection output level, and the horizontal axis indicates the oscillation frequency. When in a normal state in which the peripheral atmosphere of the detection resonant circuit 1 has dried, the resonance frequency of the detection resonant circuit 1 is a frequency f 1, detection resonant circuit 1
The oscillation frequency f
At 1 , the detection output level drops from LV1 (see the broken line waveform). The oscillation frequency at which the detection output level drops is called the dip point. When the surrounding atmosphere of the detection resonant circuit 1 of the diaper wetting detection state, the value of the capacitance C of the sensing resonance circuit 1 changes as compared with the normal state, for example, the resonance frequency changes from f 1 to f 2. Therefore, dip point detecting an output level of the detector 3 fall into LV2 from LV1 is the oscillation frequency f 2 (see the solid line waveform). Here, the three reference levels LVth are set between LV1 and LV2.

【0017】検出器3が発振する周波数f2において、
おむつが濡れていないときは検知出力レベルLV1、お
むつが濡れて、検知用共振回路の共振周波数が周波数f
2付近になったときは検知出力レベルがレベルLV1か
ら落ち込むので、レベル比較回路部17によって検知出
力レベルと基準レベルLVthを比較することにより、お
むつの濡れを検知することができる。また、基準レベル
LVthを変更することにより感度の切替えを行なうこと
ができる。そして、表示部21はランプを点灯させるこ
とにより、レベル比較回路部17の比較結果を検知用共
振回路1とコイル9の電磁結合が大きさ、すなわち出力
レベルの落ち込みの程度に応じて表示する。また、出力
レベルメータ19の針の振れによってもおむつの濡れを
察知することができる。
At the frequency f 2 at which the detector 3 oscillates,
When the diaper is not wet, the detection output level LV1 is obtained. When the diaper is wet, the resonance frequency of the detection resonance circuit becomes the frequency f.
Since the detected output level drops from the level LV1 when the value is near 2 , the wetness of the diaper can be detected by comparing the detected output level with the reference level LVth by the level comparing circuit section 17. Further, the sensitivity can be switched by changing the reference level LVth. Then, the display unit 21 lights the lamp to display the comparison result of the level comparison circuit unit 17 according to the magnitude of the electromagnetic coupling between the detection resonance circuit 1 and the coil 9, that is, the degree of drop in the output level. In addition, wetting of the diaper can also be detected by the deflection of the needle of the output level meter 19.

【0018】図8は、検知器3の他の実施例を示すブロ
ック図である。高周波発振回路部11には、その発振周
波数を検知用共振回路1が通常状態のときの共振周波数
1又は検知用共振回路1がおむつ濡れ検知状態ときの
共振周波数f2に切り替えるための周波数切替えスイッ
チ29が接続されている。周波数切替えスイッチ29に
はCPU31が接続されている。CPU31により周波
数切替えスイッチ29を切り替えて、おむつ濡れを周波
数f1とf2の両方で検知するようにすれば、検知用共振
回路1の共振周波数がf 1又はf2のいずれであるのかを
調べることができ、より正確におむつ濡れを検知するこ
とができるようになる。また、CPU31により、周波
数切替えスイッチ29を介して検知用電磁波の発信周波
数f2を適当な範囲で掃引するようにしてもよい。これ
により、水分検知をより確実に行なえるようになる。
FIG. 8 is a block diagram showing another embodiment of the detector 3.
FIG. The high-frequency oscillation circuit section 11
The resonance frequency when the resonance circuit 1 for detecting the wave number is in a normal state
f1Or when the detection resonance circuit 1 is in the diaper wetness detection state.
Resonance frequency fTwoFrequency switch to switch to
The hook 29 is connected. To the frequency switch 29
Is connected to the CPU 31. CPU 31
Change the number switch 29 to change the diaper wetness.
Number f1And fTwoIf both are detected, the resonance for detection
The resonance frequency of the circuit 1 is f 1Or fTwoWhich of
To detect diaper wetness more accurately.
And be able to. In addition, the CPU 31
Transmission frequency of electromagnetic wave for detection through number switch 29
Number fTwoMay be swept in an appropriate range. this
Thereby, the moisture detection can be performed more reliably.

【0019】図9は、検知ブロック2の他の実施例を示
す分解斜視図である。検知用共振回路1とコイル9が対
向するようにして誘電体基板5と誘電体基板7が配置さ
れ、その間に誘電体基板33が介在されている。誘電体
基板5と誘電体基板29、誘電体基板7と誘電体基板3
3は密着して接着されている。検知ブロック2をこのよ
うな構成にすることにより、ベッドに寝ているおむつ装
着者のおむつの下に侵入させておむつ濡れ検知を行なう
ことができる。
FIG. 9 is an exploded perspective view showing another embodiment of the detection block 2. The dielectric substrate 5 and the dielectric substrate 7 are arranged so that the detection resonance circuit 1 and the coil 9 face each other, and the dielectric substrate 33 is interposed therebetween. Dielectric substrate 5 and dielectric substrate 29, dielectric substrate 7 and dielectric substrate 3
3 is closely adhered. With the detection block 2 having such a configuration, it is possible to detect diaper wetness by invading the diaper of a diaper wearer sleeping on a bed.

【0020】上記の実施例では、表示部21としてラン
プを用いているが、本発明はこれに限定されるものでは
なく、レベルゲージ表示や音声表示など、濡れの検知を
知らせることができる方法であればどのような方法であ
ってもよい。上記の実施例では、渦巻き状の平面状コイ
ルは角型であるが、本発明はこれに限定されるものでは
なく、円形の渦巻き状であってもよい。また、検知用共
振回路は平面状コイルに限定されるものではなく、例え
ば誘電体基板の内部に導電性材料を内蔵し、その誘電体
基板表面に導電性材料をコイル状に巻きつけて形成した
平面状の共振回路など、おむつが位置される検知位置に
配置できるものであればどのような形状のものであって
もよい。
In the above embodiment, a lamp is used as the display unit 21. However, the present invention is not limited to this, and a method that can notify the detection of wetness, such as a level gauge display or a voice display, is used. Any method may be used. In the above embodiment, the spiral planar coil is square, but the present invention is not limited to this, and may be a circular spiral. Further, the resonance circuit for detection is not limited to a planar coil. For example, a conductive material is built in a dielectric substrate, and the conductive material is wound around the surface of the dielectric substrate in a coil shape. Any shape may be used as long as it can be arranged at the detection position where the diaper is located, such as a planar resonance circuit.

【0021】また、検知器3は検知用電磁波の出力を直
流電圧に変換して電圧値を比較することによりおむつ濡
れを検知しているが、本発明はこれに限定されるもので
はなく、直流電流に変換して電流値を比較するようにし
てもよい。また、検知器3は上記の実施例に限定される
ものではなく、検知用共振回路1の共振周波数の変化を
検知できるものであればどのような構成ものでもよい。
Although the detector 3 detects the diaper wetness by converting the output of the electromagnetic wave for detection into a DC voltage and comparing the voltage values, the present invention is not limited to this. The current value may be converted to a current and compared. Further, the detector 3 is not limited to the above embodiment, and may have any configuration as long as it can detect a change in the resonance frequency of the detection resonance circuit 1.

【0022】[0022]

【発明の効果】本発明のおむつ濡れ検知方法及びおむつ
濡れ検知装置では、おむつ装着者のおむつが位置する検
知位置に検知用共振回路を配置し、検知用共振回路に外
部から検知用電磁波を印加して検知用共振回路の周辺雰
囲気の水分量変化に基づく検知用共振回路の共振周波数
の変化を検知することによりおむつ濡れを検知するよう
にしたので、おむつに装置を装着することなくおむつ濡
れを検知することができる。
According to the diaper wetness detection method and diaper wetness detection device of the present invention, a detection resonance circuit is arranged at a detection position where a diaper of a diaper wearer is located, and a detection electromagnetic wave is externally applied to the detection resonance circuit. Diaper wetness is detected by detecting a change in the resonance frequency of the detection resonance circuit based on a change in the moisture content of the surrounding atmosphere of the detection resonance circuit, so that diaper wetness can be achieved without mounting a device on the diaper. Can be detected.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 共振回路の等価回路図である。FIG. 1 is an equivalent circuit diagram of a resonance circuit.

【図2】 おむつ濡れ検知装置の一実施例を示すブロッ
ク図である。
FIG. 2 is a block diagram showing one embodiment of a diaper wetness detection device.

【図3】 検知用共振回路の一実施例を示す平面図であ
る。
FIG. 3 is a plan view showing one embodiment of a resonance circuit for detection.

【図4】 検知器の一実施例を示すブロック図である。FIG. 4 is a block diagram showing one embodiment of a detector.

【図5】 おむつ濡れ検知装置の一実施例を示す斜視図
である。
FIG. 5 is a perspective view showing one embodiment of a diaper wetness detection device.

【図6】 同実施例を椅子に設置した例を示す一部切欠
き斜視図である。
FIG. 6 is a partially cutaway perspective view showing an example in which the embodiment is installed on a chair.

【図7】 検知器の検知出力レベルと発振周波数の関係
を示す波形図である。
FIG. 7 is a waveform diagram showing a relationship between a detection output level of a detector and an oscillation frequency.

【図8】 図8は、検知器3の他の実施例を示すブロッ
ク図である。
FIG. 8 is a block diagram showing another embodiment of the detector 3.

【図9】 検知ブロックの他の実施例を示す分解斜視図
である。
FIG. 9 is an exploded perspective view showing another embodiment of the detection block.

【符号の説明】[Explanation of symbols]

1 検知用共振回路 3 検知器 5,7 誘電体基板 9 コイル 11 高周波発振回路部 13 検波回路部 15 直流電圧増幅回路部 17 レベル比較回路部 19 出力レベルメータ 21 表示部 23 筐体 25 椅子 27 絶縁シート(座面) 29 周波数切替えスイッチ 31 CPU 33 誘電体基板 DESCRIPTION OF SYMBOLS 1 Resonance circuit for detection 3 Detector 5, 7 Dielectric substrate 9 Coil 11 High-frequency oscillation circuit part 13 Detection circuit part 15 DC voltage amplification circuit part 17 Level comparison circuit part 19 Output level meter 21 Display part 23 Housing 25 Chair 27 Insulation Seat (seat surface) 29 Frequency selector switch 31 CPU 33 Dielectric substrate

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 2G060 AA07 AE11 AF10 EA06 HC06 3B084 JA06 JC00 4C098 AA09 CC01 CD07 CD10 5C086 AA42 BA09 CA08 CB40 DA07 EA19 FA06 FA12 FA20  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2G060 AA07 AE11 AF10 EA06 HC06 3B084 JA06 JC00 4C098 AA09 CC01 CD07 CD10 5C086 AA42 BA09 CA08 CB40 DA07 EA19 FA06 FA12 FA20

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 おむつ装着者のおむつが位置する検知位
置に検知用共振回路を配置し、前記検知用共振回路に外
部から検知用電磁波を印加して前記検知用共振回路の周
辺雰囲気の水分量変化に基づく検知用共振回路の共振周
波数の変化を検知することによりおむつ濡れを検知する
おむつ濡れ検知方法。
1. A detection resonance circuit is arranged at a detection position where a diaper of a diaper wearer is located, and a detection electromagnetic wave is externally applied to the detection resonance circuit to thereby determine an amount of moisture in an atmosphere around the detection resonance circuit. A diaper wetness detection method for detecting diaper wetness by detecting a change in a resonance frequency of a detection resonance circuit based on a change.
【請求項2】 おむつ装着者がおむつを装着した状態で
おむつが位置される検知位置に配置される検知用共振回
路と、 前記検知用共振回路に一定の距離を保って固定されて前
記検知用共振回路に外部から検知用電磁波を印加する送
受信器を有し、前記検知用共振回路の周辺雰囲気の水分
量変化に基づく前記検知用共振回路の共振周波数の変化
を検知することによりおむつ濡れを検知する検知器とを
備えたおむつ濡れ検知装置。
2. A detection resonance circuit arranged at a detection position where a diaper is worn while a diaper wearer wears the diaper; and the detection resonance circuit fixed to the detection resonance circuit at a predetermined distance. Detecting diaper wetting by detecting a change in the resonance frequency of the resonance circuit for detection based on a change in the amount of moisture in the atmosphere surrounding the resonance circuit for detection, including a transceiver that externally applies a detection electromagnetic wave to the resonance circuit. Diaper wetness detection device comprising
【請求項3】 前記検知用共振回路は、誘電体基板表面
に導体パターンによりコイルが形成されてなるものであ
る請求項2に記載のおむつ濡れ検知装置。
3. The diaper wetting detection device according to claim 2, wherein the detection resonance circuit is formed by forming a coil by a conductor pattern on a surface of a dielectric substrate.
【請求項4】 前記検知用共振回路のコイルと前記送受
信器が対向し、前記基板を外側にして固定され、その基
板表面がおむつ装着者の着座面となっている請求項3に
記載のおむつ濡れ検知装置。
4. The diaper according to claim 3, wherein the coil of the resonance circuit for detection and the transmitter / receiver face each other and are fixed with the substrate facing outward, and the surface of the substrate serves as a seating surface for a diaper wearer. Wetting detector.
JP2000258385A 2000-08-29 2000-08-29 Diaper wetting detecting method and device therefor Pending JP2002071584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000258385A JP2002071584A (en) 2000-08-29 2000-08-29 Diaper wetting detecting method and device therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000258385A JP2002071584A (en) 2000-08-29 2000-08-29 Diaper wetting detecting method and device therefor

Publications (1)

Publication Number Publication Date
JP2002071584A true JP2002071584A (en) 2002-03-08

Family

ID=18746706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000258385A Pending JP2002071584A (en) 2000-08-29 2000-08-29 Diaper wetting detecting method and device therefor

Country Status (1)

Country Link
JP (1) JP2002071584A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6916968B2 (en) 2001-09-25 2005-07-12 Sysmore, Inc. Urine detection system and method
US7141715B2 (en) 2001-09-25 2006-11-28 Sysmore, Inc. System and method for assessing fluid distribution in a urine detection network
JP2007051967A (en) * 2005-08-19 2007-03-01 Central Res Inst Of Electric Power Ind Geological inspection method and magnetic field generating device thereof
JP2009537824A (en) * 2006-05-16 2009-10-29 スリーエム イノベイティブ プロパティズ カンパニー System and method for remote sensing using inductively coupled transducers
EP2485694A1 (en) * 2009-10-07 2012-08-15 Pampett AB Method and system for detecting moisture at an absorbent article
EP2519207A2 (en) * 2009-12-29 2012-11-07 Kimberly-Clark Worldwide, Inc. Conductor-less detection system for an absorbent article
JP2015157031A (en) * 2014-02-25 2015-09-03 株式会社東京洗染機械製作所 Dryness detection device for roll ironer
US10350115B2 (en) 2015-02-27 2019-07-16 Kimberly-Clark Worldwide, Inc. Absorbent article leakage assessment system
CN111465373A (en) * 2017-12-22 2020-07-28 科洛普拉斯特公司 Ostomy system and monitoring device with angular leak detection
US11013641B2 (en) 2017-04-05 2021-05-25 Kimberly-Clark Worldwide, Inc. Garment for detecting absorbent article leakage and methods of detecting absorbent article leakage utilizing the same

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7141715B2 (en) 2001-09-25 2006-11-28 Sysmore, Inc. System and method for assessing fluid distribution in a urine detection network
US6916968B2 (en) 2001-09-25 2005-07-12 Sysmore, Inc. Urine detection system and method
JP2007051967A (en) * 2005-08-19 2007-03-01 Central Res Inst Of Electric Power Ind Geological inspection method and magnetic field generating device thereof
JP2009537824A (en) * 2006-05-16 2009-10-29 スリーエム イノベイティブ プロパティズ カンパニー System and method for remote sensing using inductively coupled transducers
US8866624B2 (en) 2008-12-31 2014-10-21 Kimberly-Clark Worldwide, Inc. Conductor-less detection system for an absorbent article
EP2485694A1 (en) * 2009-10-07 2012-08-15 Pampett AB Method and system for detecting moisture at an absorbent article
US9132044B2 (en) 2009-10-07 2015-09-15 Pampett Ab Method and system for detecting moisture at an absorbent article
EP2485694A4 (en) * 2009-10-07 2013-08-28 Pampett Ab Method and system for detecting moisture at an absorbent article
EP2519207A4 (en) * 2009-12-29 2013-07-10 Kimberly Clark Co Conductor-less detection system for an absorbent article
EP2519207A2 (en) * 2009-12-29 2012-11-07 Kimberly-Clark Worldwide, Inc. Conductor-less detection system for an absorbent article
JP2015157031A (en) * 2014-02-25 2015-09-03 株式会社東京洗染機械製作所 Dryness detection device for roll ironer
US10350115B2 (en) 2015-02-27 2019-07-16 Kimberly-Clark Worldwide, Inc. Absorbent article leakage assessment system
US11013641B2 (en) 2017-04-05 2021-05-25 Kimberly-Clark Worldwide, Inc. Garment for detecting absorbent article leakage and methods of detecting absorbent article leakage utilizing the same
CN111465373A (en) * 2017-12-22 2020-07-28 科洛普拉斯特公司 Ostomy system and monitoring device with angular leak detection

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