JP2016031269A - Body pressure distribution measurement device - Google Patents
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Abstract
Description
本発明は、車両用座席等における着座者の姿勢の状態を、体圧分布として測定することに関し、上織地と、下織地と、両者を所定の間隔に保つ連結糸とからなる立体織物のクッション性を応用し、人体荷重に応じて立体織物の形状が変形することによっておこる各測定地点での静電容量の変化を測定し、体圧に変換することによって座席における着座者の体圧分布を測定することのできる立体織物の体圧分布測定装置に関するものである。 The present invention relates to measuring a posture of a seated person in a vehicle seat or the like as a body pressure distribution, and relates to a cushion of a three-dimensional fabric composed of an upper woven fabric, a lower woven fabric, and a connecting yarn that keeps both at a predetermined interval. By measuring the change in capacitance at each measurement point caused by deformation of the shape of the three-dimensional fabric according to the human body load, and converting it into body pressure, the body pressure distribution of the seated person in the seat The present invention relates to an apparatus for measuring body pressure distribution of a three-dimensional fabric that can be measured.
体圧分布を測定する装置は、種々開示されており、特許文献１においては、縦方向、横方向の等間隔ごとに感圧センサーの配置されたセンサーマットをシートの着座面に配設し、感圧センサー毎の静たわみ特性を測定して、被試験者の着座のもとでの体圧分布を感圧センサー毎の圧力値として測定する方法が記載されている。 Various devices for measuring body pressure distribution have been disclosed. In Patent Document 1, a sensor mat in which pressure-sensitive sensors are arranged at equal intervals in the vertical and horizontal directions is arranged on the seating surface of the seat, A method is described in which the static deflection characteristics of each pressure-sensitive sensor are measured, and the body pressure distribution under the sitting of the examinee is measured as the pressure value of each pressure-sensitive sensor.
特許文献２においては、多層構造を繊維構造体の上面部及び下面部の両面に導電性を有する導電糸を配置し、多層構造シートを押圧したとき、多層構造の上面部及び下面部を一定間隔に保つ連結部が圧縮され、上面部及び下面部に配置した導電糸が接触し、この時の導電糸間の電気抵抗が変化し、この電気抵抗変化を検知することで多層構造シート表面への圧力が検知できるとしている。 In Patent Document 2, when a multi-layer structure is provided with conductive yarns on both surfaces of a top surface and a bottom surface of a fiber structure and the multi-layer structure sheet is pressed, the top surface and the bottom surface of the multi-layer structure are spaced at a constant interval. The connecting portion to be maintained is compressed, the conductive yarns arranged on the upper surface portion and the lower surface portion come into contact, the electrical resistance between the conductive yarns at this time changes, and by detecting this electrical resistance change, The pressure can be detected.
しかしながら、特許文献１においては、感圧センサーの配線が多く複雑で、着座時に違和感を感じ座り心地のよいものではなかった。また、特許文献２では、上面部及び下面部に配置した導電糸が接触して電気抵抗が変化することを利用しているため、一定の圧力値を超える部分の圧力分布や経時変化の検知は可能であるが、圧力値の変化量を検知することはできない構造であった。 However, in Patent Document 1, the wiring of the pressure-sensitive sensor is complicated, and the user feels uncomfortable when sitting and is not comfortable. Further, in Patent Document 2, since the electrical resistance is changed by contacting the conductive yarns arranged on the upper surface portion and the lower surface portion, the pressure distribution and the change with time of the portion exceeding a certain pressure value are detected. Although it is possible, the structure cannot detect the amount of change in the pressure value.
また、出願人は、特許文献３において、立体編物の上編地と下編地に導電糸を編み込んで、一定の面積で対峙する電極を作製し、該電極間の静電容量を測定し、着座者の体圧分布を測定する技術を開示している。しかしながら、この技術では、立体編物の上編地と下編地に導電糸を編み込んでそれぞれの電極からリード線を取り出すのが困難で、手作業での配線に頼らざるをえず、改善が求められていた。
上織地と、下織地と、両者を所定の間隔に保つ連結糸と、からなる立体織物のクッション性を応用し、人体荷重に応じて立体織物の形状が変形することによっておこる各測定地点での静電容量の変化を測定して、体圧に変換することによって座席における着座者の体圧分布を測定することのできる立体織物の体圧分布測定装置を得ることを目的とする。 Applying the cushioning property of a three-dimensional fabric consisting of an upper woven fabric, a lower woven fabric, and a connecting thread that keeps both at a predetermined interval, and at each measurement point that occurs when the shape of the three-dimensional fabric deforms according to the human body load It is an object of the present invention to obtain a body pressure distribution measuring device for a three-dimensional fabric capable of measuring a body pressure distribution of a seated person in a seat by measuring a change in capacitance and converting it into body pressure.
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、前記目的を達成するために以下の手段を提供する。 The present invention has been made in view of such a technical background, and provides the following means in order to achieve the object.
［１］上織地と、下織地と、前記上織地と下織地の両者を所定の間隔に保つ連結糸とを備える立体織物の体圧分布測定装置であって、前記上織地内の一定方向に複数の導電糸からなる導電糸群を所定の間隔に織り込んで第１電極とし、前記下織地内に前記第１電極と交差する方向に複数の導電糸からなる導電糸群を所定の間隔に織り込んで第２電極とし、前記第１電極と前記第２電極が所定の間隔を保って交差する複数の地点を静電容量測定点とし、前記静電容量測定点での静電容量を測定する静電容量測定装置を有し、前記測定した静電容量を体圧に変換する体圧変換装置を有していることを特徴とする体圧分布測定装置。 [1] A body pressure distribution measuring device for a three-dimensional fabric comprising an upper woven fabric, a lower woven fabric, and a connecting thread that keeps both the upper woven fabric and the lower woven fabric at a predetermined interval, and is arranged in a certain direction within the upper woven fabric. A group of conductive yarns composed of a plurality of conductive yarns is woven at a predetermined interval to form a first electrode, and a group of conductive yarns composed of a plurality of conductive yarns are woven at a predetermined interval in the direction intersecting the first electrode in the lower fabric. Capacitance for measuring the capacitance at the capacitance measurement point with two electrodes, a plurality of points where the first electrode and the second electrode intersect at a predetermined interval as capacitance measurement points A body pressure distribution measuring device having a body pressure converting device that has a measuring device and converts the measured capacitance into body pressure.
［２］前記上織地と下織地との間隔が２〜４０ｍｍであることを特徴とする前項１に記載の体圧分布測定装置。 [2] The body pressure distribution measuring apparatus according to item 1 above, wherein an interval between the upper fabric and the lower fabric is 2 to 40 mm.
［３］前記上織地内の一定方向に複数の導電糸からなる導電糸群を５〜５０ｍｍの間隔に織り込んで第１電極とし、前記下織地内に前記第１電極と交差する方向に複数の導電糸からなる導電糸群を５〜５０ｍｍの間隔に織り込んで第２電極としたことを特徴とする前項１又は２に記載の体圧分布測定装置。 [3] A group of conductive yarns composed of a plurality of conductive yarns in a predetermined direction in the upper fabric is woven into a space of 5 to 50 mm to form a first electrode, and a plurality of conductive wires are intersected with the first electrode in the lower fabric. 3. The body pressure distribution measuring apparatus according to item 1 or 2, wherein a conductive electrode group made of yarn is woven into a space of 5 to 50 mm to form a second electrode.
尚、前記第１電極と前記第２電極が所定の間隔を保ち交差するとは、例えば、図１のように第１電極と第２電極が連結糸によって所定の間隔を保って配列されており、第１電極が経方向、第２電極が緯方向に配列され、第１電極と第２電極が所定の間隔を保って三次元的に交差する複数の交点を、静電容量測定点とするもので、それぞれの交点での静電容量を測定することによって、体圧分布を測定するものである。 The first electrode and the second electrode intersect with each other with a predetermined interval, for example, as shown in FIG. 1, the first electrode and the second electrode are arranged with a predetermined interval by a connecting thread, The first electrode is arranged in the longitudinal direction, the second electrode is arranged in the weft direction, and a plurality of intersections where the first electrode and the second electrode intersect three-dimensionally with a predetermined interval are used as capacitance measurement points Thus, the body pressure distribution is measured by measuring the capacitance at each intersection.
［１］の発明では、上織地と下織地と両者を所定の間隔に保つ連結糸とからなる立体織物に導電糸を織り込んだ体圧分布測定装置であるので、着座時にクッション性があり、配線やリード線等の違和感を感じることなく着座することができる。上織地と下織地において導電糸群が三次元的に交差する複数の地点を静電容量測定点として配置しているので、各静電容量測定点の上織地と下織地の間に一定量の電荷を貯えることができる。また、前記各静電容量測定点での静電容量を測定する静電容量測定装置を有し、前記各測定した静電容量を体圧に変換する体圧変換装置を有しているので、着座時の人体の体圧に応じて立体織物が変形し、その変形に応じて測定点の静電容量が変化し、この静電容量の変化を前記静電容量測定装置が測定し、さらに静電容量の変化を体圧の変化として変換する体圧変換装置を有しているので、体圧分布として測定することができる。また、立体織物の上織地と下織地の反端には、導電糸が露出しているので、第１電極、第２電極としての結線が簡単で、外観が美しく、着座時に違和感を感じない座り心地のよい体圧分布測定装置とすることができる。また体圧を除去後は、立体織物の優れた圧縮回復特性により、上織地と下織地とは所定の間隔にもどるので、体圧の変化を安定して正確に測定することができる。また、立体織物からなるので、平面から曲面にまで、椅子の形状に沿わせて変形して設置することができ、様々な部位における体圧を正確に測定することができる。 In the invention of [1], since it is a body pressure distribution measuring device in which conductive yarn is woven into a three-dimensional woven fabric composed of an upper woven fabric and a lower woven fabric and a connecting yarn that keeps both at a predetermined interval, it has cushioning properties when seated, And can sit without feeling uncomfortable with lead wires. Since a plurality of points where the conductive yarns intersect three-dimensionally in the upper and lower fabrics are arranged as capacitance measurement points, a certain amount of charge is placed between the upper and lower fabrics at each capacitance measurement point. Can be stored. In addition, since it has a capacitance measuring device that measures the capacitance at each capacitance measurement point, and has a body pressure conversion device that converts the measured capacitance into body pressure, The three-dimensional fabric is deformed according to the body pressure of the human body at the time of sitting, and the capacitance at the measurement point changes according to the deformation, and the capacitance measuring device measures the change in capacitance, Since it has a body pressure conversion device that converts a change in electric capacity as a change in body pressure, it can be measured as a body pressure distribution. In addition, the conductive yarn is exposed at the opposite ends of the upper and lower fabrics of the three-dimensional woven fabric, so the connection as the first electrode and the second electrode is simple, the appearance is beautiful, and you do not feel uncomfortable when sitting. A comfortable body pressure distribution measuring device can be obtained. In addition, after the body pressure is removed, the upper and lower fabrics return to a predetermined distance due to the excellent compression recovery characteristics of the three-dimensional fabric, so that changes in body pressure can be measured stably and accurately. Moreover, since it consists of a three-dimensional fabric, it can be installed by changing along the shape of the chair from a flat surface to a curved surface, and body pressure at various parts can be measured accurately.
［２］の発明では、前記上織地と下織地との間隔が２〜４０ｍｍであるので、底付き感なく静電容量の測定を確実に行うことができる。 In the invention [2], since the distance between the upper woven fabric and the lower woven fabric is 2 to 40 mm, the capacitance can be reliably measured without feeling of bottoming.
［３］の発明では、前記上織地内の一定方向に複数の導電糸からなる導電糸群を５〜５０ｍｍの間隔に配列して第１電極とし、下織地内に前記第１電極と交差する方向に複数の導電糸からなる導電糸群を５〜５０ｍｍの間隔に配列して第２電極としたので、その交点に多くの静電容量測定点を構成することができ、広い面積での静電容量測定が可能になり、多くの体圧分布の変化を測定することができる。 In the invention of [3], a group of conductive yarns composed of a plurality of conductive yarns arranged in a fixed direction in the upper woven fabric is arranged at intervals of 5 to 50 mm as the first electrode, and the direction intersecting the first electrode in the lower woven fabric Since the second electrode is formed by arranging conductive yarn groups composed of a plurality of conductive yarns at intervals of 5 to 50 mm, a large number of capacitance measurement points can be formed at the intersections, and the capacitance in a large area Measurement is possible, and many changes in body pressure distribution can be measured.
本発明は、上織地と下織地と両者を所定の間隔に保つ連結糸とからなる立体織物の繊維構造体からなる体圧分布測定装置であって、例えば、図１に示すように、立体織物の上織地と下織地に導電糸群を所定の間隔に織り込んで、導電糸群の交点を静電容量測定点とし、多数の静電容量測定点が配置される。例えば、図１では、上織地側の静電容量測定点a−１が、下織地側の静電容量測定点b−１に対応して静電容量測定点が配置され、電荷を蓄積することになる。導電糸以外の糸は、絶縁糸であって、連結糸も絶縁糸からなり、上織地と下織地の間に導電性は無い構造になっている。上織地と下織地に５〜５０ｍｍの間隔に導電糸群を織り込んで配置すれば、風合が柔らかく、立体織物表面の風合と同じになり、着座者が測定点を意識しないで着座することできる。 The present invention relates to a body pressure distribution measuring device comprising a three-dimensional woven fiber structure comprising an upper woven fabric and a lower woven fabric, and a connecting yarn that keeps both at a predetermined interval. For example, as shown in FIG. Conductive yarn groups are woven into the upper woven fabric and lower woven fabric at a predetermined interval, and intersection points of the conductive yarn groups are used as capacitance measurement points, and a large number of capacitance measurement points are arranged. For example, in FIG. 1, the capacitance measurement point a-1 on the upper fabric side is arranged corresponding to the capacitance measurement point b-1 on the lower fabric side, and charges are accumulated. become. The yarn other than the conductive yarn is an insulating yarn, and the connecting yarn is also an insulating yarn, and has a structure having no electrical conductivity between the upper fabric and the lower fabric. If the conductive yarn group is woven into the upper woven fabric and the lower woven fabric at an interval of 5 to 50 mm, the texture becomes soft and the same as the texture on the surface of the three-dimensional fabric, and the seated person can sit without being aware of the measurement point. .
導電糸群の幅は、特に限定されないが導電糸２〜２００本程度の幅があれば好ましい。例えば、上織地の経糸に、絶縁糸１００本導電糸５０本を繰り返して配列し、緯糸に絶縁糸を使い、平織り組織で上織地を製織し、下織地では、経糸は全て絶縁糸を使い、緯糸は、絶縁糸１００本と導電糸５０本を繰り返して緯入れし、平織り組織で製織すればよい。本発明の立体織物は、ジャガード織機やドビー織機等、通常の多段開口の織機を用いて作ることができる。上織地と下織地の地組織は、同一の織組織であってもよいし、異なる組織であってもよい。また、織組織も特に限定されず、平織組織、綾織組織、朱子織組、あるいはこれらの組み合わせ組織であってよい。 The width of the conductive yarn group is not particularly limited, but a width of about 2 to 200 conductive yarns is preferable. For example, 100 insulating threads and 50 conductive threads are repeatedly arranged on the warp of the upper woven fabric, the insulating yarn is used for the weft, the upper woven fabric is woven with a plain weave structure, and the warp yarn uses all the insulating yarn for the lower woven fabric, The weft may be woven with a plain weave structure by repeatedly wefting 100 insulating threads and 50 conductive threads. The three-dimensional woven fabric of the present invention can be produced using a normal multistage opening loom such as a jacquard loom or a dobby loom. The upper and lower woven fabrics may be the same or different. In addition, the woven structure is not particularly limited, and may be a plain woven structure, a twill woven structure, a satin woven structure, or a combination thereof.
体圧に応じて立体織物が変形し、その変形に応じて測定点の静電容量が変化するので、静電容量の変化を測定することができ、さらに静電容量の変化を体圧の変化として変換し、体圧分布として測定することができるので、平面はもちろん、曲面や立面の形状に合わせて使用することが可能である。また、織物であるので、上織地と下織地と反端から、導電糸を簡単に取り出すことができ、第１電極、第２電極としての配線が簡単で、外観が美しく、着座時に導電糸の違和感を感じない、座り心地のよい体圧分布測定装置とすることができる。 The three-dimensional fabric is deformed according to the body pressure, and the capacitance at the measurement point changes according to the deformation. Therefore, the change in the capacitance can be measured, and the change in the capacitance can be measured by the change in the body pressure. Therefore, it can be used in accordance with the shape of a curved surface or an elevation surface as well as a flat surface. Moreover, since it is a woven fabric, the conductive yarn can be easily taken out from the upper fabric, the lower fabric and the opposite end, the wiring as the first electrode and the second electrode is simple, the appearance is beautiful, and the conductive yarn is It is possible to provide a body pressure distribution measuring device that does not give a sense of incongruity and is comfortable to sit on.
また、各導電糸と第１電極あるいは第２電極と結線するのに、コネクターを介して接続すれば、立体織物部分の取り外しが簡単になり、洗濯等のメンテナンスを容易に行うことができる。 Further, if each conductive thread is connected to the first electrode or the second electrode by connecting via a connector, the three-dimensional fabric portion can be easily removed, and maintenance such as washing can be easily performed.
前記地組織の織密度や連結糸の連結密度は特に限定するものではないが、立体織物の見かけ密度をｄとしたとき、ｄは、０．０２〜０．３ｇ／ｃｍ３のであるのが好ましく、より好ましくは０．０５〜０．２ｇ／ｃｍ３の範囲にあるのがよい。立体織物の見かけ密度ｄが０．０２ｇ／ｃｍ３より下回るようであれは、圧縮回復性に乏しく、０．３ｇ／ｃｍ３を上回ると、硬くなってクッション性が悪く、車両用座席等には不向きである。 The woven density of the ground texture and the connection density of the connecting yarn are not particularly limited, but d is preferably 0.02 to 0.3 g / cm 3 when the apparent density of the three-dimensional fabric is d. More preferably, it is in the range of 0.05 to 0.2 g / cm 3 . If the apparent density d of the three-dimensional fabric is less than 0.02 g / cm 3 , the compression recovery property is poor, and if it exceeds 0.3 g / cm 3 , it becomes hard and has poor cushioning properties. It is unsuitable.
前記上織地と下織地との間隔は２〜４０ｍｍであるのが好ましい。２ｍｍを下回る間隔では、着座時に底付き感があり好ましくない。また、４０ｍｍを超える距離では、静電容量の変化が小さく、正確に測定できないので好ましくない。また、静電容量測定点の数としては、人体の大きさから、１ｍ２に２００〜２５００個を均等に配置するのが好ましい。 The distance between the upper woven fabric and the lower woven fabric is preferably 2 to 40 mm. An interval of less than 2 mm is not preferable because there is a feeling of bottoming when seated. Also, a distance exceeding 40 mm is not preferable because the change in capacitance is small and cannot be measured accurately. In addition, as the number of capacitance measurement points, it is preferable that 200 to 2500 are equally arranged in 1 m 2 from the size of the human body.
また、立体織物の十分な圧縮回復性を保持するために、連結糸の表面に低融点の熱融着性繊維を巻きつけた連結糸を用いて製織したり、表層側が低融点の熱融着性繊維からなる芯鞘構造の連結糸を用いて製織した後、熱処理を施し、連結糸の交点で熱融着性繊維が融着して連結糸と上織地と下織地とを固定し、一体構造とするのが好ましい。 In addition, in order to maintain sufficient compression recovery of the three-dimensional fabric, weaving is performed using a connecting yarn in which a low-melting-point heat-fusible fiber is wrapped around the surface of the connecting yarn, or the surface layer side has a low-melting-point heat-sealing. After weaving using a connecting yarn of core-sheath structure made of conductive fibers, heat treatment is applied, and the heat-fusible fiber is fused at the intersection of the connecting yarns, fixing the connecting yarn, the upper woven fabric, and the lower woven fabric. A structure is preferable.
上織地と下織地において、絶縁糸については、導電性のない糸であれば特に限定しないが、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエステル、ポリプロピレン、綿、ナイロン等の糸が挙げられる。中でも、４００〜８００ｄｔｅｘのナイロンのマルチフィラメント糸は耐久性があり好ましい。５００〜７００ｄｔｅｘのナイロンのマルチフィラメント糸であれば、風合は柔らかく、耐久性も優れている。 In the upper woven fabric and the lower woven fabric, the insulating yarn is not particularly limited as long as it is a non-conductive yarn, and examples thereof include polyethylene terephthalate, polybutylene terephthalate, polyester, polypropylene, cotton, nylon, and the like. Among these, 400-800 dtex nylon multifilament yarn is durable and preferable. A nylon multifilament yarn of 500 to 700 dtex has a soft texture and excellent durability.
連結糸としては、導電性のない糸であれば特に限定しないが、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエステル、ポリプロピレン、綿、ナイロン等の糸が挙げられる。中でも、５００〜２０００ｄｔｅｘ程度のナイロンのモノフィラメント糸が空隙を保つ強度と剛性を保有すると共に復元力が強く好ましい。５００ｄｔｅｘ未満の連結糸であれば、圧縮回復性に乏しく、２０００ｄｔｅｘを超えると硬くなり立体織物のクッション性が低下しやすく、製織性も悪くなる。 The connecting yarn is not particularly limited as long as it is a non-conductive yarn, and examples thereof include polyethylene terephthalate, polybutylene terephthalate, polyester, polypropylene, cotton, nylon, and the like. Among them, a nylon monofilament yarn of about 500 to 2000 dtex is preferable because it has strength and rigidity for maintaining voids and has a strong restoring force. If the connecting yarn is less than 500 dtex, the compression recovery property is poor, and if it exceeds 2000 dtex, it becomes hard and the cushioning property of the three-dimensional fabric is liable to deteriorate, and the weaving property also deteriorates.
本発明における導電糸は、導電性を有する繊維素材であればよく、例えば、銅、ステンレス、銀等の金属繊維や炭素繊維、導電性のない繊維に銀、銅、ニッケル等の金属をメッキ等の手段によって繊維表面にコーティングし導電性機能の付与された糸等をあげることができる。 The conductive yarn in the present invention may be a fiber material having conductivity, for example, a metal fiber such as copper, stainless steel, or silver, a carbon fiber, or a non-conductive fiber plated with a metal such as silver, copper, or nickel. Thus, it is possible to use a yarn having a conductive function coated on the fiber surface.
静電容量測定装置としては、特に特別なものを用意する必要はなく、一般に市販されるものでかまわない。体圧変換装置は静電容量測定装置で測定した静電容量を体圧に変換して表示するもので、体圧がかかると立体編物が変形し、静電容量測定点の静電容量が変化し、この変化を圧力の変化に変換するものである。 As the capacitance measuring device, it is not necessary to prepare a special device, and a commercially available device may be used. The body pressure conversion device displays the capacitance measured by the capacitance measuring device by converting it into body pressure. When body pressure is applied, the three-dimensional knitted fabric is deformed and the capacitance at the capacitance measuring point changes. This change is converted into a change in pressure.
また、本発明の体圧分布測定装置にヒーター線を上織地や連結糸に織り込んで電源と接続すれば、ヒーター機能付きの体圧分布測定装置とすることも出来る。 Moreover, if the heater wire is woven into the upper fabric or the connecting yarn and connected to the power source in the body pressure distribution measuring apparatus of the present invention, a body pressure distribution measuring apparatus with a heater function can be obtained.
次に、この発明の実施例を説明するが、本発明の範囲はこれらの実施例に限定されるものではない。 Next, examples of the present invention will be described, but the scope of the present invention is not limited to these examples.
＜実施例１＞ 図１〜図５に示すように、導電糸４本と絶縁糸６本を一組として、上織地と下織地に第１電極と第２電極を織り込み、同時に上織地と下織地とを所定の間隔に保つ連結糸を織り成して、静電容量測定点を均等になるように配置（４００００個／ｍ２）した立体織物を作成した。なお、導電糸としては１１０ｄｔｅｘ／２４ｆ／６のナイロンマルチフィラメント導電糸（日本蚕毛染色株式会社製、体積抵抗値３．０×１０２Ω・ｃｍ）とし、上織地と下織地のベースに使用した糸は、６６０ｄｔｅｘ／９６ｆのポリエステルマルチフィラメント糸とし、組織は平織りで、連結糸としては６６０ｄｔｅｘ／１ｆのポリエステルモノフィラメント糸に低融点の熱融着性繊維を巻きつけたものを使用し、仕上がり厚みは１３．５ｍｍとした。製織後加熱処理して、連結糸と、上織地と下織地の各交点を固着した。次に上織地と下織地の各導電糸群をそれぞれ第１電極、第２電極としてつなぎ込んで電極とし、他端を各静電容量測定装置に接続して、各静電容量測定点での静電容量を測定した。さらに、各測定した静電容量を体圧に変換する体圧変換装置で体圧に変換し、体圧分布を測定した。 <Example 1> As shown in FIGS. 1 to 5, as a set of four conductive yarns and six insulating yarns, a first electrode and a second electrode are woven into an upper woven fabric and a lower woven fabric. A three-dimensional woven fabric was produced by weaving connecting yarns that keep a predetermined distance from the woven fabric and arranging the capacitance measurement points evenly (40000 pieces / m 2 ). In addition, as the conductive yarn, a nylon multifilament conductive yarn of 110 dtex / 24f / 6 (manufactured by Nippon Kashiwa Dyeing Co., Ltd., volume resistance value 3.0 × 102 Ω · cm) was used as the base of the upper fabric and the lower fabric. Is a polyester multifilament yarn of 660 dtex / 96f, the structure is plain weave, and a uniaxial yarn of 660 dtex / 1f wrapped with a low-melting heat-fusible fiber is used as the connecting yarn, and the finished thickness is 13 0.5 mm. After weaving, heat treatment was performed to fix the connecting yarns and the intersections of the upper and lower fabrics. Next, each conductive yarn group of the upper woven fabric and the lower woven fabric is connected as the first electrode and the second electrode, respectively, and the other end is connected to each capacitance measuring device, and the electrostatic measurement at each capacitance measuring point is performed. The electric capacity was measured. Furthermore, each measured electrostatic capacity was converted into body pressure by a body pressure conversion device that converts body pressure into body pressure, and body pressure distribution was measured.
なお、各静電容量測定点での静電容量のバラツキは、体圧に変換するときに補正を加え体圧分布測定値とした。自動車の座席に置き、体圧分布を測定したが、上織地や下織地の表面に配線が露出しないもので、座り心地のよい体圧分布測定装置とすることができ、十分に実用に耐えうるものであった。 It should be noted that the variation in capacitance at each capacitance measurement point was corrected to be a body pressure distribution measurement value when converted into body pressure. The body pressure distribution was measured by placing it on the seat of an automobile, but the wiring is not exposed on the surface of the upper and lower fabrics, so that it can be a comfortable body pressure distribution measuring device that can withstand practical use. It was a thing.
＜実施例２＞ 実施例１において、導電糸１００本と絶縁糸４００本を一組として、上織地と下織地に第１電極と第２電極を織り込んだ以外は、実施例１と同様にして体圧分布測定装置とした。自動車の座席に置き、体圧分布を測定したが、実施例１と同様に外観がよく、十分に実用に耐えうるものであった。 <Example 2> In Example 1, except that 100 conductive yarns and 400 insulating yarns were combined as a set, and the first electrode and the second electrode were woven into the upper and lower fabrics, the same as in Example 1. A body pressure distribution measuring apparatus was used. The body pressure distribution was measured by placing it on a car seat, but it had a good appearance as in Example 1 and could withstand practical use.
＜比較例１＞ 実施例１において、仕上がり厚みを４２ｍｍとした以外は、実施例１と同様にして体圧分布測定装置とした。体圧分布を測定したところ、上織地と下織地間の静電容量が安定して測定されず、体圧分布を測定するまでには至らず、人が着座しているかいないかの判断しかできないものであった。 <Comparative example 1> In Example 1, it was set as the body pressure distribution measuring apparatus similarly to Example 1 except having set the finishing thickness to 42 mm. When the body pressure distribution is measured, the capacitance between the upper and lower fabrics is not stably measured, and the body pressure distribution is not measured, so it can only be judged whether a person is seated or not. It was a thing.
１・・・体圧分布測定装置
２・・・上織地に配列された導電糸
３・・・下織地に配列された導電糸
４・・・上織地の経糸（絶縁糸）
５・・・上織地の緯糸（絶縁糸）
６・・・下織地の経糸（絶縁糸）
７・・・下織地の緯糸（絶縁糸）
８・・・コネクタ
ａ−１・・・上織地における静電容量測定点（下織地のｂ−１地点に対応）
ｂ−１・・・下織地における静電容量測定点（上織地のａ−１地点に対応）
DESCRIPTION OF SYMBOLS 1 ... Body pressure distribution measuring device 2 ... Conductive yarn 3 arranged in upper fabric ... Conductive yarn arranged in lower fabric 4 ... Warp (insulating yarn) of upper fabric
5 ... Weft yarn of upper fabric (insulating yarn)
6 ... Warp yarn (insulating yarn)
7 ... Weft yarn (insulating yarn) of lower fabric
8 ... Connector a-1 ... Capacitance measurement point in upper fabric (corresponding to point b-1 in lower fabric)
b-1 ... Capacitance measurement point in the lower fabric (corresponding to the a-1 point in the upper fabric)
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