JP5137659B2 - Carpet sensor - Google Patents
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- JP5137659B2 JP5137659B2 JP2008089525A JP2008089525A JP5137659B2 JP 5137659 B2 JP5137659 B2 JP 5137659B2 JP 2008089525 A JP2008089525 A JP 2008089525A JP 2008089525 A JP2008089525 A JP 2008089525A JP 5137659 B2 JP5137659 B2 JP 5137659B2
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本発明は、人や物の接近又は接触を検出するセンサに関するものであり、建物の出入り口や室内に本発明のカ−ペットセンサを敷設すれば、防犯や介護等の監視業務に役立つことができるものである。 The present invention relates to a sensor that detects the approach or contact of a person or an object. If the carpet sensor of the present invention is laid in a doorway or a room of a building, it can be useful for monitoring work such as crime prevention and nursing care. Is.
従来から静電容量型近接センサは、導電体を有し、導電体に人や物体が接近又は接触することにより生じる誘電電位が静電容量の変化として検出できることを利用している。 Conventionally, a capacitance-type proximity sensor has a conductor, and utilizes that a dielectric potential generated when a person or an object approaches or contacts the conductor can be detected as a change in capacitance.
特許文献１においては、通常の生活環境に多数存在する布帛やフィルムを導電体とすることにより、人体の接近または接触を違和感なく検出することができ、離床センサ、入浴センサ、進入センサ等として使用することが提案されている。 In Patent Document 1, it is possible to detect the approach or contact of the human body without a sense of incongruity by using a large number of cloths and films that exist in a normal living environment as conductors, and they are used as leaving sensors, bathing sensors, approach sensors, etc. It has been proposed to do.
また、特許文献２においては、不均一な面における圧力変化を測定できるシート状センサとして、導電繊維と該導電繊維の周囲を被覆する非導電性材料からなる経糸及び緯糸で織った布帛を開示し、経糸と緯糸の交差部分に物体が近付いたり、軽く触れることにより電界に乱れを生じ静電容量が変化することを利用したタッチセンサが提案されている。 Patent Document 2 discloses a fabric woven with warps and wefts made of a conductive fiber and a non-conductive material covering the periphery of the conductive fiber as a sheet-like sensor capable of measuring a change in pressure on a non-uniform surface. There has been proposed a touch sensor that utilizes the fact that an electric field is disturbed by an object approaching or lightly touching the intersection of warp and weft and the capacitance changes.
特許文献３においては、要介護者の動静を静電容量タッチ電極を用いた静電容量タッチセンサによって検出し、要介護者の安全を確保した介護システムの技術を開示している。しかしながら、これらの技術は、静電容量の変化が微小で検知しにくいことが多いことから、検知しやすいセンサが求められている。
本発明は、かかる技術的背景に鑑みてなされたものであって、カーペットを導電体とし、カーペットに人や物体が接近又は接触することにより生じる誘電電位がカーペットの静電容量の変化として確実に検出できるカーペットセンサを提供することを目的とする。 The present invention has been made in view of such a technical background, and a carpet is used as a conductor, and a dielectric potential generated when a person or an object approaches or comes into contact with the carpet is reliably determined as a change in the capacitance of the carpet. An object is to provide a carpet sensor capable of detection.
本発明者らは、このような課題を解決するために鋭意検討の結果、導電繊維を含む糸をカーペットのパイル糸として植え込むことにより、カーペットを三次元的な導電体となし、人や物体が接近又は接触することにより生じる誘電電位がカーペットの静電容量の変化として検出しやすいことを見出し本発明に到達した。前記目的を達成するために、本発明は以下の手段を提供する。 As a result of intensive studies to solve such problems, the inventors have made a carpet as a three-dimensional conductor by implanting a yarn containing conductive fibers as a pile yarn of a carpet, and humans and objects are The present inventors have found that the dielectric potential generated by approaching or contacting can be easily detected as a change in the capacitance of the carpet. In order to achieve the above object, the present invention provides the following means.
［１］パイル糸を植設したループパイルカ−ペットであって、連続した導電繊維を含むパイル糸を少なくとも２本植設し、該２本の導電繊維の一方を検出電極とし、他の一方を検出電極と絶縁した基準電極とし、前記検出電極と前記基準電極との間の静電容量の変化を検出する静電容量検出手段とを備えてなることを特徴とするカ−ペットセンサ。 [1] A loop pile carpet in which pile yarn is implanted, in which at least two pile yarns including continuous conductive fibers are implanted, and one of the two conductive fibers is used as a detection electrode, and the other is detected. A carpet sensor comprising: a reference electrode insulated from an electrode; and a capacitance detecting means for detecting a change in capacitance between the detection electrode and the reference electrode.
［２］パイル糸を植設したループパイルカ−ペットであって、連続した導電繊維を含むパイル糸を少なくとも２本植設し、該２本の導電繊維の一方を検出電極とし、他の一方を検出電極と絶縁した基準電極とし、前記検出電極と前記基準電極との間の静電容量の変化を検出する静電容量検出手段と、前記静電容量検出手段の信号により所定の制御信号を発生する制御手段とを備えてなることを特徴とするカ−ペットセンサ。 [2] A loop pile carpet in which pile yarn is planted, in which at least two pile yarns including continuous conductive fibers are planted, and one of the two conductive fibers is used as a detection electrode and the other is detected. A reference electrode insulated from the electrode, and a capacitance detection means for detecting a change in capacitance between the detection electrode and the reference electrode; and a predetermined control signal is generated by a signal from the capacitance detection means A carpet sensor comprising a control means.
［３］ 前記検出電極と絶縁した基準電極が、導電繊維の周辺を導電繊維以外のパイル糸で被覆したパイル糸からなることを特徴とする前項１または２に記載のカ−ペットセンサ。
[3] The carpet sensor according to the above item 1 or 2, wherein the reference electrode insulated from the detection electrode is made of a pile yarn in which the periphery of the conductive fiber is covered with a pile yarn other than the conductive fiber.
［４］前記連続した導電繊維を含むパイル糸を、導電繊維を含まないパイル糸１本または２本以上の本数置きに少なくとも２本植設したタフテッドカーペットであることを特徴とする前項１または２に記載のカ−ペットセンサ。 [4] The above item 1 or 2, wherein the pile yarn including the continuous conductive fibers is a tufted carpet in which at least two pile yarns not including conductive fibers are planted every two or more. 2. The carpet sensor according to 2.
［１］の発明では、連続した導電繊維を含むパイル糸を少なくとも２本植設し、該２本の導電繊維の一方を検出電極とし、他の一方を検出電極と絶縁した基準電極とするので、前記検出電極と前記基準電極との間の静電容量の変化を静電容量検出手段によって検出できるカ−ペットセンサとすることができる。また、連続した導電繊維を含むパイル糸を少なくとも２本植設するので、前記２本のパイル糸部分が導電体となり、この状態で、前記２本のパイル糸部分に人や物体が接近又は接触するときに生じる誘電電位が、静電容量の変化をもたらし静電容量検出手段によって測定されることでカーペットへの圧力変化や接近を測定することができる。また、パイル糸は、織物等に較べ三次元的に立っていることから、少しの圧力でも変位は大きく、静電容量の変化として検出されやすい。 In the invention of [1], at least two pile yarns containing continuous conductive fibers are planted, and one of the two conductive fibers is used as a detection electrode, and the other is used as a reference electrode insulated from the detection electrode. A carpet sensor that can detect a change in capacitance between the detection electrode and the reference electrode by a capacitance detection means. Further, since at least two pile yarns including continuous conductive fibers are planted, the two pile yarn portions become conductors, and in this state, a person or an object approaches or comes into contact with the two pile yarn portions. The dielectric potential generated at the time of the change brings about a change in the capacitance, and is measured by the capacitance detection means, whereby the pressure change and the approach to the carpet can be measured. Further, since the pile yarn stands three-dimensionally compared to a woven fabric or the like, the displacement is large even with a slight pressure and is easily detected as a change in capacitance.
［２］の発明では、パイル糸を植設したループパイルカ−ペットであって、連続した導電繊維を含むパイル糸を少なくとも２本植設し、該２本の導電繊維の一方を検出電極とし、他の一方を検出電極と絶縁した基準電極とし、前記検出電極と前記基準電極との間の静電容量の変化を検出する静電容量検出手段と、前記静電容量検出手段の信号により所定の制御信号を発生する制御手段とを備えているので、 静電容量の変化を検出した信号を制御手段に接続することにより、不審な侵入者を検知する防犯装置や、ドアの開閉装置等に利用することができる。 In the invention of [2], a loop pile carpet in which pile yarn is implanted, wherein at least two pile yarns including continuous conductive fibers are implanted, and one of the two conductive fibers is used as a detection electrode, and the other One of the two is used as a reference electrode insulated from the detection electrode, capacitance detection means for detecting a change in capacitance between the detection electrode and the reference electrode, and predetermined control based on a signal from the capacitance detection means Control means that generates a signal, and by connecting a signal that detects a change in capacitance to the control means, it is used for a crime prevention device that detects a suspicious intruder, a door opening and closing device, etc. be able to.
［３］の発明では、検出電極と絶縁した基準電極が、導電繊維の周辺を導電繊維以外のパイル糸で被覆したパイル糸からなるので、パイル糸が踏まれて導電繊維を含むパイル糸同士が強く接したとしても、絶縁が保たれ静電容量の変化が正確に検出される。 In the invention of [3], the reference electrode insulated from the detection electrode is made of a pile yarn in which the periphery of the conductive fiber is covered with a pile yarn other than the conductive fiber. Even if the contact is strong, the insulation is maintained and the change in capacitance is accurately detected.
［４］の発明では、連続した導電繊維を含むパイル糸を、導電繊維を含まないパイル糸１本置きまたは２本以上の本数置きに少なくとも２本植設したタフテッドカーペットであるので、連続した導電繊維を含むパイル糸同士が接触して通電する可能性が低下し、連続した導電繊維を導電繊維以外のパイル糸で被覆しなくても長期の使用にも耐えうるカ−ペットセンサとすることができる。 In the invention of [4], since the pile yarn containing continuous conductive fibers is a tufted carpet in which at least two pile yarns not containing conductive fibers or every two or more pile yarns are planted, continuous The possibility of energizing pile yarns containing conductive fibers decreases, and a carpet sensor that can withstand long-term use without covering continuous conductive fibers with pile yarns other than conductive fibers. Can do.
静電容量は、互いに絶縁された導体の間につくられる電荷の貯えることのできる能力を示すもので、二つの導体間の距離と形状、およびその空間の性質によって決まるとされている。二つの導体間に物を近づけたり、接触したりすると、この静電容量は増加（変化）する性質を有しており、本発明はこの性質を利用し、静電容量の変化を測定することによって様々なセンサとして利用するものである。 Capacitance refers to the ability to store charge created between conductors that are insulated from each other, and is determined by the distance and shape between the two conductors and the nature of the space. This capacitance increases (changes) when an object is brought close to or in contact with the two conductors. The present invention uses this property to measure the change in capacitance. It is used as various sensors.
次に、この発明に係るカ−ペットセンサの一実施形態を図面に基づいて説明する。この実施形態のカ−ペットセンサ１は、パイル糸２と基布３とバッキング層４を含み、パイル糸２には連続した導電繊維５がゆるく撚り合わされてカーペットのループパイルを形成している。本発明では、タフデッドカーペットのように多数本のパイル糸を同時に使って、ループパイルカーペットとしてもよいし、ハンドタフトカーペットのように一本のパイル糸を基布に植設して全体を構成するループパイルカーペットとしてもよい。またその大きさも問わず、カーペットの面積に応じて検出電極６と基準電極７と静電容量検出手段８の数を増やしてやればよい。（図１、２参照） Next, an embodiment of a carpet sensor according to the present invention will be described with reference to the drawings. The carpet sensor 1 of this embodiment includes a pile yarn 2, a base fabric 3, and a backing layer 4, and continuous conductive fibers 5 are loosely twisted on the pile yarn 2 to form a carpet loop pile. In the present invention, a large number of pile yarns may be used at the same time as a tufted carpet to form a loop pile carpet, or a single pile yarn may be planted on a base fabric as in a hand tufted carpet. It may be a loop pile carpet. Moreover, what is necessary is just to increase the number of the detection electrode 6, the reference electrode 7, and the electrostatic capacitance detection means 8 according to the area of a carpet regardless of the magnitude | size. (See Figures 1 and 2)
ループパイルカーペットは、無数のループパイルが形成され、本発明は、そのループパイル列のうちの少なくとも２列に連続した導電繊維を含むパイル糸を植設するもので、その一方の列を検出電極とし、他の一方の列を基準電極とし、それぞれにリード線を介して前記検出電極と前記基準電極と静電容量検出手段の間は接続されている。 この状態で人や物体がカーペットに接近又は接触すると、該静電容量が変化することから、静電容量検出手段によって該静電容量の変化を測定することができるので、カ−ペットセンサとして使用することができる。 An infinite number of loop piles are formed in the loop pile carpet. In the present invention, pile yarns including conductive fibers that are continuous in at least two of the loop pile rows are implanted, and one row is used as a detection electrode. The other one column is used as a reference electrode, and the detection electrode, the reference electrode, and the capacitance detection means are connected to each other through a lead wire. In this state, when a person or an object approaches or comes into contact with the carpet, the capacitance changes. Therefore, the change in the capacitance can be measured by the capacitance detection means, so that it can be used as a carpet sensor. can do.
また、静電容量検出手段によって該静電容量の変化を測定して得られた信号を、さらに制御手段に接続することにより、不審な侵入者を検知する防犯装置や、ドアの開閉装置等に利用することが可能となる。またこれらの２列に連続した導電繊維を含むパイル糸を植設する数をカーペット全体に複数個に増やすことにより、カーペット全体の静電容量の変化を測定することができるようになり、測定値の変化が時間的にずれれば、被検出物の移動方向も検出できるようになり、様々な応用制御が可能なカ−ペットセンサとして使用することができる。 In addition, the signal obtained by measuring the change in capacitance by the capacitance detection means is further connected to the control means, so that it can be applied to a security device for detecting a suspicious intruder or a door opening / closing device. It can be used. In addition, by increasing the number of pile yarns containing conductive fibers that are continuous in these two rows to a plurality of carpets, it becomes possible to measure changes in the capacitance of the entire carpet, and the measured values If the change in time shifts in time, the moving direction of the object to be detected can be detected, and it can be used as a carpet sensor capable of various application controls.
導電繊維５としては、特に限定されないが例えばステンレス等の金属繊維や炭素繊維、合成繊維に金属粒子や炭素粒子等を練りこんだ導電繊維や、合成繊維や天然繊維等の非導電性繊維に金属メッキや金属スパッタリング等で導電性を施した導電繊維等を使用することができる。(削除) The conductive fiber 5 is not particularly limited. For example, a metal fiber such as stainless steel or carbon fiber, a conductive fiber in which metal particles or carbon particles are kneaded into a synthetic fiber, or a non-conductive fiber such as synthetic fiber or natural fiber is metal. Conductive fibers or the like that have been made conductive by plating or metal sputtering can be used. (Delete)
パイル糸２としては、非導電性の糸であれば特に限定されないが、例えばポリエステル繊維、ポリアミド繊維、ポリプロピレン繊維、アクリル繊維、レ−ヨン繊維等の合成繊維からなるもの等を好適に使用でき、その他麻、綿、羊毛等の天然繊維からなる糸等も使用できる。パイル長は、カーペットの規格にもよるが３．０〜１０ｍｍであるのが好ましい。１０ｍｍを超えるとパイル糸に荷重がかかるとき、もう一方の導電繊維を含むパイル糸の列に接触通電する可能性が高くなり好ましくない。また、３．０ｍｍを下回っても、カーペットの地が見えてしまう地スケとなり、カーペットとしての品位が下がり好ましくない。 The pile yarn 2 is not particularly limited as long as it is a non-conductive yarn. For example, a yarn made of a synthetic fiber such as a polyester fiber, a polyamide fiber, a polypropylene fiber, an acrylic fiber, or a rayon fiber can be suitably used. Other yarns made of natural fibers such as hemp, cotton, wool, etc. can also be used. The pile length is preferably 3.0 to 10 mm although it depends on the carpet standard. If it exceeds 10 mm, when a load is applied to the pile yarn, the possibility of contact energization to the pile of pile yarns including the other conductive fibers is undesirably increased. Moreover, even if it is less than 3.0 mm, the ground of the carpet can be seen, and the quality of the carpet is lowered, which is not preferable.
なお、本発明において静電容量検出手段や制御手段の構造及び機能は、当業者によく知られるもので構わない。 In the present invention, the structures and functions of the capacitance detection means and the control means may be well known to those skilled in the art.
次に、導電繊維の周辺を導電繊維以外のパイル糸で被覆したパイル糸は、導電繊維を中心に配置しその周囲に非導電繊維のパイル糸を巻き付けるように給糸速度に差をつけながら撚糸してやれば得ることができる。（図４参照）さらに確実な導電繊維の被覆方法としては、導電繊維の周辺を非導電性樹脂で被覆する方法が簡単で確実である。 Next, the pile yarn in which the periphery of the conductive fiber is covered with a pile yarn other than the conductive fiber is twisted with a difference in the yarn feeding speed so that the pile yarn of the non-conductive fiber is wound around the conductive fiber. If you do it, you can get it. (See FIG. 4) As a more reliable conductive fiber coating method, a method of coating the periphery of the conductive fiber with a non-conductive resin is simple and reliable.
連続した導電繊維を含むパイル糸を、導電繊維を含まないパイル糸１本置きまたは２本以上の本数置きに少なくとも２本植設するのは、カーペットが踏み込まれて、パイル形態を維持できなくなったとき、少しでも検出電極と基準電極の絶縁状態を維持させ誤動作を防ごうとするものである。タフテッドカーペットの場合は、使用するパイル糸が細くパイルが倒れやすいことが多いことから、導電繊維を含まないパイル糸１本置きまたは２本以上の本数置きに導電繊維を含むパイル糸を植設することが有効である。但し、静電容量は電極間の距離が大きくなると減少するので、静電容量を実測して導電繊維を含まないパイル糸の本数を決めるのがよい。 If at least two pile yarns containing continuous conductive fibers are installed every other one or two or more pile yarns not containing conductive fibers, the carpet has been stepped in and the pile shape cannot be maintained. At times, the insulation state between the detection electrode and the reference electrode is maintained even a little to prevent malfunction. In the case of tufted carpets, the pile yarn used is thin and the pile tends to fall down. Therefore, pile yarn containing conductive fibers is installed every other pile yarn or no more than two. It is effective to do. However, since the capacitance decreases as the distance between the electrodes increases, it is preferable to determine the number of pile yarns that do not include conductive fibers by actually measuring the capacitance.
＜実施例１＞
基布（目付１００ｇ／ｍ２ポリプロピレンテープヤーン織布（１４×１３））にパイル糸（ポリエステル繊維（２５００ｄｔｅｘ））をタフティング機（１／８Ｇループ、幅１．５ｍ）で植え込む（パイル長５．０ｍｍ、目付５００ｇ／ｍ２）タフテッドカーペットにおいて、導電繊維糸としてステンレス繊維（直径０．０４ｍｍｘ２本 表面抵抗値５Ω）を芯にポリエステル繊維（２５００ｄｔｅｘ）で撚り合わした複合糸を隣接して図２のように三箇所に給糸して、タフテッドカーペットの生地を得た。次にタフテッドカーペットの生地の裏面側にＳＢＲラテックス（充填剤として炭酸カルシウム）を塗布しさらにセカンド基布として５デシテックスのポリエステル繊維からなるニードルパンチ不織布（目付３００ｇ／ｍ２、厚さ６ｍｍ）を積層し、乾燥して導電糸入りのタフテッドカーペットを得た。
<Example 1>
Pile yarn (polyester fiber (2500 dtex)) is planted in a base fabric (100 g / m 2 polypropylene tape yarn woven fabric (14 × 13)) with a tufting machine (1 / 8G loop, width 1.5 m) (pile length 5) 0.0mm, 500g / m 2 per unit area) In a tufted carpet, a composite yarn in which a stainless fiber (0.04mm diameter x 2 surface resistance value 5Ω) is twisted with a polyester fiber (2500dtex) as a conductive fiber yarn is adjacent As shown in Fig. 2, the yarn was fed to three places to obtain a tufted carpet fabric. Next, SBR latex (calcium carbonate as a filler) is applied to the back side of the tufted carpet fabric, and a needle punched nonwoven fabric (basis weight 300 g / m 2 , thickness 6 mm) made of 5 decitex polyester fibers is used as the second base fabric. It laminated | stacked and dried and obtained the tufted carpet containing a conductive yarn.
さらに、該導電糸入りのタフテッドカーペットをマットサイズに裁断し、図２のように三箇所の導電繊維糸の２本を抽出して、片方の導電繊維糸列を基準電極とし、もう一方の導電繊維糸列を検出電極とし、両者の端糸を静電容量検出手段に接続し、静電容量を測定したところ各々１５０ｐＦの値を得た。つぎに人をカーペット上を図の上から下へ歩かせたとき、三箇所の静電容量はそれぞれ１６０ｐＦの値をえることができ、静電容量が、人が歩く方向に順に変化することを確認することができた。なお、静電容量の測定は日置電機株式会社製ＬＣＲハイテスタ３５３２−５０で行った。 Further, the tufted carpet containing the conductive yarn is cut into a mat size, two conductive fiber yarns are extracted as shown in FIG. 2, and one conductive fiber yarn row is used as a reference electrode, and the other conductive fiber yarn is extracted. The fiber yarn row was used as a detection electrode, both end yarns were connected to a capacitance detecting means, and the capacitance was measured to obtain a value of 150 pF for each. Next, when a person walks on the carpet from the top to the bottom of the figure, the capacitance at each of the three locations can have a value of 160 pF, and the capacitance changes sequentially in the direction in which the person walks. I was able to confirm. The capacitance was measured with an LCR high tester 3532-50 manufactured by Hioki Electric Co., Ltd.
＜実施例２＞
ハンドタフト機（ループ用）を用いて図３のような円形のマットを作成した。まず、導電繊維糸としてステンレス繊維（直径０．０４ｍｍｘ２本 表面抵抗値５Ω）を芯にポリエステル繊維（２５００ｄｔｅｘ×４本）で撚り合わした複合糸をハンドタフト機にセットし、渦巻状に中心から外側にタフトし直径３０ｃｍの大きさにした。次に導電繊維糸（ステンレス繊維直径０．０４ｍｍｘ２本とポリエステル繊維（２５００ｄｔｅｘ×４本）の引き揃え）を前にタフトされた複合糸の隣に渦巻の中心から外側にタフトし直径３０ｃｍのマットとした。渦巻きの中心から、外側の端まで一本の連続した導電繊維糸２本が植えられ、その間を非導電繊維であるポリエステル繊維糸が埋めている構成になる。一方の導電繊維糸列を基準電極とし、他の導電繊維糸列を検出電極として両者の端糸を静電容量検出手段に接続し、静電容量を測定し２５０ｐＦの値を得た。次に該マット上に人が手を５ｃｍに近づけた状態で静電容量を測定したところ３５０ｐＦの値をえることができ、静電容量が増加することを確認することができた。
<Example 2>
A circular mat as shown in FIG. 3 was prepared using a hand tuft machine (for loop). First, a composite yarn in which stainless steel fibers (diameter 0.04 mm × 2 surface resistance value 5Ω) and polyester fibers (2500 dtex × 4) are twisted together as a conductive fiber yarn is set in a hand tuft machine, spirally from the center to the outside Tufted to a size of 30 cm in diameter. Next, conductive fiber yarns (alignment of stainless steel fiber diameter 0.04 mm × 2 and polyester fibers (2500 dtex × 4)) are tufted outward from the center of the spiral next to the previously tufted composite yarn, and a mat with a diameter of 30 cm did. Two continuous conductive fiber yarns are planted from the center of the spiral to the outer end, and a polyester fiber yarn which is a nonconductive fiber is buried between them. One conductive fiber yarn row was used as a reference electrode, the other conductive fiber yarn row was used as a detection electrode, both end yarns were connected to a capacitance detecting means, and the capacitance was measured to obtain a value of 250 pF. Next, when the capacitance was measured with a hand approaching 5 cm on the mat, a value of 350 pF was obtained, and it was confirmed that the capacitance increased.
＜比較例１＞
実施例２において、非導電繊維糸に替えて導電繊維糸（ステンレス繊維直径０．０４ｍｍｘ２本とポリエステル繊維（２５００ｄｔｅｘ×４本）の引き揃え）とし導電繊維糸のみで構成されるマットとした以外は実施例１と同様にしてマットを得た。静電容量を測定したところ、マット内で導電繊維糸同士が接触してしまい静電容量を確認できなかった。
<Comparative Example 1>
In Example 2, instead of the non-conductive fiber yarn, a conductive fiber yarn (alignment of stainless steel fiber diameter 0.04 mm × 2 and polyester fiber (2500 dtex × 4)) and a mat composed only of the conductive fiber yarn was used. A mat was obtained in the same manner as in Example 1. When the electrostatic capacity was measured, the conductive fiber yarns were in contact with each other in the mat, and the electrostatic capacity could not be confirmed.
１・・・カーペットセンサ
２・・・パイル糸
３・・・基布
４・・・バッキング層
５・・・導電繊維
６・・・非導電繊維
７・・・検出電極
８・・・基準電極
９・・・静電容量検出手段
DESCRIPTION OF SYMBOLS 1 ... Carpet sensor 2 ... Pile thread 3 ... Base cloth 4 ... Backing layer 5 ... Conductive fiber 6 ... Non-conductive fiber 7 ... Detection electrode 8 ... Reference electrode 9 ... Capacitance detection means
Claims (4)
3. The carpet sensor according to claim 1, wherein the reference electrode insulated from the detection electrode is made of a pile yarn in which the periphery of the conductive fiber is covered with a pile yarn other than the conductive fiber.
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| JP2008089525A JP5137659B2 (en) | 2008-03-31 | 2008-03-31 | Carpet sensor |
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| JP5750751B2 (en) * | 2010-08-20 | 2015-07-22 | 学校法人立命館 | Foot slip detection device and insole |
| FR2988213A1 (en) * | 2012-03-15 | 2013-09-20 | Patrice Brand | Surface coating i.e. carpet for activation of e.g. lighting function, upon detection of user, has upper face and lower face in contact with ground, where proximity capacitive sensor realized by metal sheet is placed on lower face of carpet |
| EP3111838B1 (en) | 2014-02-28 | 2020-01-29 | School Juridical Person Kitasato Institute | Input device, fiber sheet, clothing, biometric information detection device |
| JP7416357B2 (en) * | 2018-05-16 | 2024-01-17 | サンコ テキスタイル イスレットメレリ サン ベ ティク エーエス | Composite yarn for position detection for capacitive touch sensing |
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| JPS62200701A (en) * | 1986-02-28 | 1987-09-04 | 旭化成株式会社 | Deformed conductive knitting |
| JPH031417A (en) * | 1988-12-22 | 1991-01-08 | Nishi Michio | Noncontact sensor switch |
| JP2000131162A (en) * | 1998-10-28 | 2000-05-12 | Ks Techno Kk | Mat sensor |
| JP3782951B2 (en) * | 2001-07-06 | 2006-06-07 | 成人 黒田 | Sensor and sensor output treatment device |
| JP2003033262A (en) * | 2001-07-23 | 2003-02-04 | Naoto Kobayashi | Sensor sheet |
| JP3691460B2 (en) * | 2002-06-18 | 2005-09-07 | 日本エレクトロニクス工業株式会社 | Pressure detection device |
| JP2004150869A (en) * | 2002-10-29 | 2004-05-27 | Asahi Kasei Fibers Corp | Proximity sensor |
| JP2006078422A (en) * | 2004-09-13 | 2006-03-23 | Mitsuba Corp | Proximity sensor, and insertion detector using same |
| JP2006164925A (en) * | 2004-12-03 | 2006-06-22 | Fuminori Hirose | Touch sensor |
| JP2006234716A (en) * | 2005-02-28 | 2006-09-07 | Aichi Prefecture | Sheet-like sensor device |
| JP4587317B2 (en) * | 2006-01-24 | 2010-11-24 | 国立大学法人岐阜大学 | Proximity sensor and proximity / contact sensor |
| JP2007213845A (en) * | 2006-02-07 | 2007-08-23 | Jobu:Kk | Capacitance touch sensor, bed-leaving situation detection device using sensor, and room monitoring system using detection device |
| JP2007232938A (en) * | 2006-02-28 | 2007-09-13 | Gurabitei:Kk | Rubbing cloth |
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