JP2017125269A - Smart helmet - Google Patents

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JP2017125269A
JP2017125269A JP2016003946A JP2016003946A JP2017125269A JP 2017125269 A JP2017125269 A JP 2017125269A JP 2016003946 A JP2016003946 A JP 2016003946A JP 2016003946 A JP2016003946 A JP 2016003946A JP 2017125269 A JP2017125269 A JP 2017125269A
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silver
electrode
fibers
biological information
information acquisition
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将俊 東島
Masatoshi Tojima
将俊 東島
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Starlite Co Ltd
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Starlite Co Ltd
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  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Helmets And Other Head Coverings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a smart helmet which appropriately mounts an electrode for biological information acquisition which can stably and easily measure biological information, environment information and body motion information at the same time without giving pain to a subject and a sensor which can measure temperature, humidity and acceleration, performs distribution to the outside by using a radio communication device, displays the fatigue degree of a body and a condition of health on a screen, and is used for a system which can perform prevention determination.SOLUTION: An electrode 5 for biological information acquisition is provided in a part which comes into contact with a skin of a head band 3 or a chin strap 4, and the electrode for biological information acquisition is made of a flexible conductive cloth configured by performing weave processing of conductive fibers and non-conductive fibers, wherein an electrode material is silver-coated organic fibers or a plurality of fibers containing the silver-coated organic fibers.SELECTED DRAWING: Figure 1

Description

本発明は、被験者が頭部に装着して使用するスマートヘルメットに係わり、更に詳しくは、被験者の生体情報を始め環境情報や体動情報を取得して、被験者の疲労度等の体調を監視し、作業の安全を図るために使用するスマートヘルメットに関するものである。   The present invention relates to a smart helmet that a subject wears on his / her head, and more particularly, obtains environmental information and body movement information including biological information of the subject, and monitors the physical condition such as fatigue level of the subject. The present invention relates to a smart helmet used for work safety.

帽子やヘルメットに、電極を取付けて生体情報を取得することは公知である（特許文献１、２参照）。生体情報としては、脳波、心拍数、脈波、体温等が代表される。この生体情報を得るために、生体インピーダンスを計測し、被験者の疲労度、眠気等を検知し、警告し休憩を促すシステムに関して記載されている。   It is well known to acquire biological information by attaching electrodes to a hat or a helmet (see Patent Documents 1 and 2). Examples of biological information include brain waves, heart rate, pulse wave, body temperature, and the like. In order to obtain this biometric information, it describes a system that measures bioelectrical impedance, detects the degree of fatigue, sleepiness, etc. of a subject, warns and prompts a break.

特許文献３には、医師や研究者等専門家でない一般人でも容易に操作することができるカウボーイハットが記載され、電極パッドの皮膚接触部に、導電性布、導電性ペースト等を介在させ、皮膚のインピーダンスを低下させることが好ましいと記載されている。   Patent Document 3 describes a cowboy hat that can be easily operated by a non-professional person such as a doctor or a researcher. The skin contact portion of the electrode pad is interposed with a conductive cloth, a conductive paste, or the like, and the skin. It is described that it is preferable to reduce the impedance.

特許文献４には、疲労監視装置として機能するヘルメットが記載されている。具体的には、ヘルメットは、帽体内に設置され、頭部の位置に接触して第１情報取得するための第１電極と、帽体外に設置され、頭部の別の位置に接触して、第２情報を取得するための第２電極とを電気的に接続し脳波情報を取得すると記載されている。電極の材質、詳細は記載されていないため詳細は不明であるが、図面から第２電極はクリップタイプであり、耳に挟んで装着していることは解る。   Patent Document 4 describes a helmet that functions as a fatigue monitoring device. Specifically, the helmet is installed in the cap body, contacts the position of the head, the first electrode for acquiring the first information, and is installed outside the cap body and contacts the other position of the head. It is described that the electroencephalogram information is acquired by electrically connecting the second electrode for acquiring the second information. Although the material and details of the electrode are not described, the details are unknown, but it can be seen from the drawing that the second electrode is a clip type and is sandwiched between ears.

特許文献５には、人体を電気的に刺激する下着電極に関し、ナイロンとウレタンの合成繊維からなるパワーネットの織り目に導電性の糸を織り込んで電極を形成すること、前記導電性の糸は、金糸、銀糸、等の金属系、あるいは、銅線、アルミ線、カーボン繊維等の導電細線を使用することが記載されている。   Patent Document 5 relates to an underwear electrode that electrically stimulates the human body, forming an electrode by weaving a conductive thread into a weave of a power net made of a synthetic fiber of nylon and urethane, the conductive thread, It is described that metal type such as gold thread and silver thread, or conductive thin line such as copper wire, aluminum wire and carbon fiber is used.

特許文献６には、電極材料が銀被覆有機繊維体あるいは銀被覆有機繊維を含有する複数の繊維から形成され、ゴム弾性を有する生体用電極が記載されている。そして、循環器系や呼吸器系等の生体情報を得るために、生体のインピーダンスを計測と記載されている。   Patent Document 6 describes a biomedical electrode in which an electrode material is formed of a silver-coated organic fiber body or a plurality of fibers containing silver-coated organic fibers and has rubber elasticity. And, in order to obtain biological information such as a circulatory system and a respiratory system, it is described that the impedance of the living body is measured.

特開２０１０−１４８７１８号公報JP 2010-148718 A 特開２００５−２３００３０号公報JP 2005-230030 A 特開２０１１−１８２９７３号公報JP 2011-182773 A 特開２０１５−０２１２１５号公報Japanese Patent Laying-Open No. 2015-021215 特開２０００−３１４００２号公報JP 2000-312002 A 特開平０５−１３７７０３号公報JP 05-137703 A

しかしながら、生体情報を得るために生体インピーダンスを計測する電極として、布地に銅系、Ｎｉ系等の金属繊維を織り込んだものは、安全性、安定性の面で問題があり実用化されることは少なかった。特に、この布地は伸縮性に乏しいため、装着時に被験者が苦痛と感じる問題があった。また、導電性の布を使用する場合でも、皮膚のインピーダンスを低くするために導電性ペーストを接触部に塗ることが多く、使用前後の作業が煩雑であった。   However, as an electrode for measuring bioimpedance in order to obtain biometric information, a material in which a metal fiber such as copper-based or Ni-based fabric is woven is problematic in terms of safety and stability and will be put into practical use. There were few. In particular, since this fabric has poor stretchability, there was a problem that the subject felt pain when worn. Even when a conductive cloth is used, a conductive paste is often applied to the contact portion in order to reduce the impedance of the skin, and the work before and after use is complicated.

そこで、本発明が前述の状況に鑑み、解決しようとするところは、被験者に苦痛を与えることなく、生体情報、環境情報、体動情報を同時に安定かつ容易に計測できる生体情報取得用電極及び温度、湿度、加速度を計測できるセンサーを適宜搭載し、無線通信デバイスを使い外部へ配信し、身体の疲労度、健康状態を画面表示し、予防判断できるシステムに使用するためのスマートヘルメットを提供する点にある。   Therefore, in view of the above-described situation, the present invention intends to solve a biological information acquisition electrode and a temperature that can simultaneously and stably measure biological information, environmental information, and body motion information without causing pain to the subject. Providing a smart helmet for use in a system that is equipped with sensors that can measure humidity and acceleration as needed, distributed to the outside using a wireless communication device, displays the degree of fatigue and health of the body, and can make preventive decisions It is in.

本発明は、前述の課題解決のために、ヘッドバンド若しくはあご紐の皮膚に接触する部位に生体情報取得用電極を備え、該生体情報取得用電極は、電極材料が銀被覆有機繊維あるいは銀被覆有機繊維を含有する複数の繊維であり、これら導電性繊維と、非導電性繊維とを織り加工又は編み加工で構成され柔軟性を持つ導電性布からなることを特徴とするスマートヘルメットを構成した。   In order to solve the above-mentioned problems, the present invention is provided with a biological information acquisition electrode at a site contacting the skin of a headband or chin strap, and the biological information acquisition electrode is made of silver-coated organic fiber or silver-coated electrode material. A plurality of fibers containing organic fibers, and composed of a conductive cloth having flexibility, which is formed by weaving or knitting these conductive fibers and non-conductive fibers to constitute a smart helmet. .

ここで、前記電極材料に使用される銀被覆有機繊維の太さが３０〜１５０デニールの集合体であるが好ましい。   Here, the thickness of the silver-coated organic fiber used for the electrode material is preferably an aggregate of 30 to 150 denier.

また、前記銀被覆有機繊維は、有機繊維への銀被覆量が有機繊維の重量に対して５〜３０重量％であることも好ましい。   The silver-coated organic fiber preferably has a silver coating amount of 5 to 30% by weight based on the weight of the organic fiber.

また、前記銀被覆有機繊維は、表面抵抗が２０Ω／ｃｍ以下であることも好ましい。   The silver-coated organic fiber preferably has a surface resistance of 20 Ω / cm or less.

また、前記銀被覆有機繊維は、比重が１．４〜１．８であることも好ましい。   The silver-coated organic fiber preferably has a specific gravity of 1.4 to 1.8.

以上にしてなる本発明のスマートヘルメットは、電極材料が銀被覆有機繊維あるいは銀被覆有機繊維を含有する複数の繊維であり、これら導電性繊維と、非導電性繊維とを織り加工又は編み加工で構成され柔軟性を持つ導電性布からなる生体情報取得用電極を、ヘッドバンド若しくはあご紐の皮膚に接触する部位に設けたので、頭皮や皮膚に柔軟性を持つ生体情報取得用電極が接触するだけであり、長時間に亘って苦痛を与えることなく生体情報を取得することができる。本発明で用いる生体情報取得用電極は、生体インピーダンスを接触若しくは非接触で低侵襲な計測が可能である。   In the smart helmet of the present invention as described above, the electrode material is a plurality of fibers containing silver-coated organic fibers or silver-coated organic fibers, and these conductive fibers and non-conductive fibers are woven or knitted. Since the electrode for biometric information acquisition composed of a flexible conductive cloth is provided at the site of the headband or chin strap that contacts the skin, the biometric information acquisition electrode having flexibility on the scalp or skin contacts However, it is possible to acquire biological information without causing pain for a long time. The biometric information acquisition electrode used in the present invention can measure bioimpedance with minimal contact or non-contact.

本発明のスマートヘルメットの使用例を示す部分断面図である。It is a fragmentary sectional view which shows the usage example of the smart helmet of this invention. 生体情報取得用電極をヘッドバンドに装着した例を示す斜視図である。It is a perspective view which shows the example which mounted | wore the headband with the electrode for biometric information acquisition. 生体情報取得用電極をあご紐に装着した例を示す側面図である。It is a side view which shows the example which mounted | worn the biometric information acquisition electrode to the chin string. 各種導電性繊維のＩ−Ｖ特性を示すグラフである。It is a graph which shows the IV characteristic of various conductive fibers. 銀被覆有機繊維の洗濯耐久性評価結果を示し、洗濯回数に対する表面抵抗の変化を示すグラフである。It is a graph which shows the washing durability evaluation result of a silver covering organic fiber, and shows the change of surface resistance with respect to the frequency | count of washing. 生体情報取得用電極で発汗情報が取得可能であることの実験結果を示し、水分量に対する静電容量の変化を示すグラフである。It is a graph which shows the experimental result that perspiration information is acquirable with a living body information acquisition electrode, and shows the change of the electrostatic capacity to the amount of moisture. 本発明のスマートヘルメットを使用して取得した各種情報に基づいて被験者毎の状態を表示する例を示すモニター画面である。It is a monitor screen which shows the example which displays the state for every test subject based on the various information acquired using the smart helmet of this invention.

本発明のスマートヘルメットは、被験者（作業者）が頭部に装着して使用している間、ヘッドバンド若しくはあご紐の皮膚に接触する部位に設けた生体情報取得用電極から生体情報を取得すると同時に、帽体に装着した各種センサーによって、外気温等の環境情報を取得するとともに、被験者の動作を体動情報として取得し、これらの情報を逐次無線通信手段によって監視サーバーに送信し、監視サーバーで情報処理して被験者の疲労度等の体調を監視するシステムに使用し、未然に不慮の事故を防止したり、作業効率の向上を図ることができる。また、被験者の異常を監視サーバーが検出した場合、警告信号を被験者のスマートヘルメットに送信し、被嵌者に知らせるようにすることも可能である。   The smart helmet of the present invention acquires biological information from a biological information acquisition electrode provided on a portion of the headband or chin strap that comes into contact with the skin while the subject (operator) wears it on the head. At the same time, environmental information such as the outside air temperature is acquired by various sensors attached to the cap body, the movement of the subject is acquired as body movement information, and the information is sequentially transmitted to the monitoring server by wireless communication means. It can be used in a system that processes information and monitors the physical condition of the subject, such as fatigue, to prevent accidents and improve work efficiency. In addition, when the monitoring server detects an abnormality of the subject, a warning signal can be transmitted to the subject's smart helmet to notify the fitee.

次に、添付図面に示した実施形態に基づき、本発明を更に詳細に説明する。図１は、本発明のスマートヘルメット１を被験者(作業者)Ｍの頭部に被った状態を示し、図中符号２は帽体、３はヘッドバンド、４はあご紐を示している。   Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings. FIG. 1 shows a state in which a smart helmet 1 according to the present invention is put on the head of a subject (operator) M, in which 2 is a cap body, 3 is a headband, and 4 is a chin cord.

前記ヘッドバンド３若しくはあご紐４の一方又は双方に、生体情報を取得するための生体情報取得用電極５を備えている。この生体情報取得用電極５は、電極材料が銀被覆有機繊維あるいは銀被覆有機繊維を含有する複数の繊維であり、これら導電性繊維と、非導電性繊維とを織り加工又は編み加工で構成され柔軟性を持つ導電性布からなっている。   One or both of the headband 3 and the chin cord 4 are provided with a biological information acquisition electrode 5 for acquiring biological information. The biological information acquisition electrode 5 is composed of a plurality of fibers whose electrode material contains silver-coated organic fibers or silver-coated organic fibers, and these conductive fibers and non-conductive fibers are woven or knitted. Made of flexible conductive cloth.

前記ヘッドバンド３に生体情報取得用電極５を設ける場合、図２に示すように、ヘッドバンド３の被験者の額に接触する部位に、柔軟性を持つ導電性布からなる生体情報取得用電極５を被せて設ける。前記ヘッドバンド３に装着する生体情報取得用電極５は、消臭機能と吸水速乾機能を備えていることがより好ましい。また、前記あご紐４に生体情報取得用電極５を設ける場合、図３に示すように、柔軟性を持つ導電性布そのものであご紐４を作製する。この場合も、あご紐４に消臭機能を有する繊維と補強繊維を組み合わせた複合繊維構造材を用いて破断荷重が１１０ｋｇｆ以上となるように構成することが好ましい。   In the case where the biological information acquisition electrode 5 is provided on the headband 3, as shown in FIG. 2, the biological information acquisition electrode 5 made of a conductive cloth having flexibility at the portion of the headband 3 that contacts the forehead of the subject. To cover. It is more preferable that the biological information acquisition electrode 5 attached to the headband 3 has a deodorizing function and a water absorption quick-drying function. Further, when the biological information acquisition electrode 5 is provided on the chin string 4, as shown in FIG. 3, the chin string 4 is made of a flexible conductive cloth itself. Also in this case, it is preferable to use a composite fiber structure material in which the chin string 4 is combined with a fiber having a deodorizing function and a reinforcing fiber so that the breaking load is 110 kgf or more.

織り加工又は編み加工を工夫すれば、柔軟性を持つ布の一部に生体情報取得用電極５を構成する電極部を設けることができ、また電極部は複数箇所に設けることも可能である。   If the weaving process or the knitting process is devised, an electrode part constituting the biological information acquiring electrode 5 can be provided on a part of a flexible cloth, and the electrode part can be provided at a plurality of locations.

本発明に使用する生体情報取得用電極５は、銀被覆有機繊維と非導電性繊維とを織り加工又は編み加工で構成され、柔軟性を持ち、屈曲特性に優れ、測定部位との密着性、肌心地が良い。また、前記生体情報取得用電極５は、布であるから、任意の形状に裁断し、ミシンにより任意の場所へ縫着できる。更に、前記生体情報取得用電極５は、他の非導電性の布と一体化して使用することも可能である。そして、被験者Ｍの測定部位と接触若しくは非接触であり、低侵襲で生体情報を計測できる。しかも、皮膚と電極間に、導電性ジェル、導電グリース等を使わず、ドライでの使用も可能である。   The biological information acquisition electrode 5 used in the present invention is composed of a silver-coated organic fiber and a non-conductive fiber by weaving or knitting, has flexibility, excellent bending properties, and adhesion to a measurement site. The skin feels good. Further, since the biological information acquisition electrode 5 is a cloth, it can be cut into an arbitrary shape and sewn to an arbitrary place by a sewing machine. Furthermore, the biometric information acquisition electrode 5 can be used integrally with another non-conductive cloth. And it is a contact or non-contact with the measurement site | part of the test subject M, and biometric information can be measured with minimal invasiveness. In addition, it is possible to use it dry without using conductive gel, conductive grease or the like between the skin and the electrode.

前記生体情報取得用電極５で取得する生体情報は、脳波、心拍、脈拍の生体インピーダンスの変化である。また、前記帽体２に装着した各種センサーで取得する環境情報は、温度（気温）、湿度、あるいは降雨状況であり、体動情報は、身体の動作に関する情報であり、これらを同時に安定して計測し解析を行う演算回路を搭載し、無線通信デバイスを使い、監視サーバーへ情報を配信し画面で状況を知ることができるようにする。   The biological information acquired by the biological information acquisition electrode 5 is a change in bioelectrical impedance of an electroencephalogram, a heartbeat, and a pulse. The environmental information acquired by the various sensors attached to the cap body 2 is temperature (air temperature), humidity, or rainfall conditions, and the body motion information is information related to the movement of the body. It is equipped with an arithmetic circuit that measures and analyzes it, and uses a wireless communication device to distribute information to the monitoring server so that the situation can be known on the screen.

図１において、前記帽体２の内部で頭頂部の空間を利用して、温度・湿度センサー６と加速度センサー７を演算回路や無線通信デバイス（図示せず）とともに設け、生体情報や体動情報を取得している。また、前記帽体２の外部、図示したものは後頭部に位置する部位に、温度・湿度センサー８を設けて環境情報を取得している。また、前記帽体２の外部で後部には、各種センサーや演算回路、無線通信デバイスに電源を供給するバッテリー９を備えている。   In FIG. 1, a temperature / humidity sensor 6 and an acceleration sensor 7 are provided together with an arithmetic circuit and a wireless communication device (not shown) using the space at the top of the head 2 inside the cap body 2. Is getting. In addition, a temperature / humidity sensor 8 is provided outside the cap body 2, in the illustrated portion located at the back of the head, to acquire environmental information. In addition, a battery 9 for supplying power to various sensors, arithmetic circuits, and wireless communication devices is provided outside the cap body 2 at the rear part.

本発明で使用する銀被覆有機繊維とは、天然及び合成の有機繊維、即ち、綿、麻、ポリアミド、アクリル、ポリエステル、セルロースポリウレタン等の繊維で、太さが０．１〜１５ｄ（ｄ＝デニール）のものに、銀を被覆したものである。ここで、有機繊維の太さにこだわる理由として、太さが０．１ｄよりも細い場合、狙いの膜厚にするための銀の被覆量を多く必要となり、比重も大きくなる。逆に、１５ｄより太いと狙いの膜厚にするための銀の被覆量は減らせるが、繊維が硬くなり、柔軟性を失われてしまう。そして、前記有機繊維の表面に銀を被覆し、銀被覆有機繊維の太さが３０〜１５０ｄの集合体となるように作製する。   The silver-coated organic fibers used in the present invention are natural and synthetic organic fibers, that is, fibers of cotton, hemp, polyamide, acrylic, polyester, cellulose polyurethane, etc., and the thickness is 0.1 to 15d (d = denier) ) Is coated with silver. Here, as a reason for sticking to the thickness of the organic fiber, when the thickness is thinner than 0.1 d, a large amount of silver coating is required to obtain a target film thickness, and the specific gravity also increases. Conversely, if it is thicker than 15d, the silver coating amount for making the target film thickness can be reduced, but the fiber becomes hard and the flexibility is lost. And the surface of the said organic fiber is coat | covered with silver, and it produces so that the thickness of a silver covering organic fiber may become an aggregate of 30-150d.

本発明において、有機繊維を銀で被覆する方法は、幾通りかの方法があるが、量産性を配慮し、無電解メッキ法で被覆する。銀の被覆量は、５〜３０重量％（銀重量／有機繊維重量）で、銀の被覆量により、分極電圧に影響がでる。銀被覆有機繊維あるいは銀被覆有機繊維を含有する複数の繊維で形成された電極材料の形態としては、銀被覆有機繊維のみからな不織布、銀被覆有機繊維を含んだ不織布、銀被覆有機繊維のみからなる糸を織り加工、編み加工して作製した導電性布としたもの等である。   In the present invention, there are several methods for coating organic fibers with silver, but in consideration of mass productivity, coating is performed by an electroless plating method. The silver coating amount is 5 to 30% by weight (silver weight / organic fiber weight), and the polarization voltage is affected by the silver coating amount. The form of the electrode material formed of silver-coated organic fibers or a plurality of fibers containing silver-coated organic fibers includes non-woven fabrics made only of silver-coated organic fibers, non-woven fabrics containing silver-coated organic fibers, and only silver-coated organic fibers. A conductive cloth produced by weaving and knitting the yarn.

前記生体情報取得用電極５として、実使用に耐えるには、柔軟性、屈曲性に加え、洗濯耐久性が必要となる。本実施形態で使用した銀被覆有機繊維は、ミツフジ株式会社製のＡＧｐｏｓｓ（登録商標）である。導電性布の柔軟性、屈曲性に関しては特許文献にも書かれており既に実証済みである。   In order to endure actual use as the biological information acquisition electrode 5, in addition to flexibility and flexibility, washing durability is required. The silver-coated organic fiber used in this embodiment is AGposs (registered trademark) manufactured by Mitsufuji Corporation. The flexibility and flexibility of the conductive cloth are also described in the patent literature and have already been demonstrated.

図４に、本発明に係る銀被覆有機繊維（１）〜（３）のＩ−Ｖ特性を測定して導電性を評価した結果を示した。比較のために、ポリウレタン被覆銅線、ニクロム線、炭素繊維トウのＩ−Ｖ特性も測定した。抵抗値測定方法は、上記の線、トウ、繊維を延ばし、測定間距離１０ｃｍとし、３回測定した結果を示した。   In FIG. 4, the result of having measured the IV characteristic of the silver covering organic fiber (1)-(3) which concerns on this invention, and evaluating electroconductivity was shown. For comparison, IV characteristics of polyurethane-coated copper wire, nichrome wire, and carbon fiber tow were also measured. The resistance value measurement method showed the result of measuring the above-mentioned line, tow, and fiber, extending the distance between measurements to 10 cm, and measuring three times.

また、表１に前述のＩ−Ｖ特性を測定した各電極材料について、抵抗値を示している。更に、各電極材料を用いて電極を作製した場合について、着心地、織り加工、編み加工、洗濯特性、生体適合性、抗菌性、導電特性を、○（良好）、△（やや良）、×（不良）の３段階で評価した結果を表１に示している。   Table 1 shows the resistance values of the electrode materials whose IV characteristics were measured. Furthermore, in the case where an electrode is prepared using each electrode material, the comfort, weaving, knitting, washing characteristics, biocompatibility, antibacterial properties, and conductive characteristics are indicated by ○ (good), Δ (slightly good), × Table 1 shows the results of evaluation in three stages (defect).

Figure 2017125269
Figure 2017125269

これらの評価の結果、銀被覆有機繊維は、金属製繊維に匹敵する導電性を有しており、電極材料として使用できることが確認できた。金属繊維は優れた導電特性を示すが、皮膚、人体と接触する電極としては、着心地、生体適合性が良くないため、不適であると判断できる。   As a result of these evaluations, it was confirmed that the silver-coated organic fiber has conductivity comparable to that of a metal fiber and can be used as an electrode material. Although metal fibers exhibit excellent conductive properties, it can be determined that they are unsuitable for electrodes that come into contact with the skin or human body because they are not comfortable and biocompatible.

洗濯耐久性評価として、銀被覆有機繊維の織物を家庭用洗濯機にて、中性洗剤を使用して洗濯した後に織物の表面抵抗を測定し、洗濯耐久性評価とした。織物の経方向、横方向それぞれ５ヶ所測定し得られた平均値をグラフ化して図５に示す。図５のグラフ中、下側は銀被覆有機繊維のみを織り加工して作製した導電性布の結果であり、上側は有機繊維を織り加工して作製した布に無電解銀メッキを施した導電性布（後染め）の結果である。後染め（織り加工後銀被覆）でなければ、表面抵抗の変化は小さく耐久性があると判断できる。   As the washing durability evaluation, the surface resistance of the woven fabric was measured after washing the silver-coated organic fiber fabric using a neutral detergent in a household washing machine, and the washing durability was evaluated. The average value obtained by measuring 5 points in the warp direction and the transverse direction of the fabric is graphed and shown in FIG. In the graph of FIG. 5, the lower side is a result of a conductive cloth produced by weaving only silver-coated organic fibers, and the upper side is a result of electroless silver plating applied to a cloth produced by weaving organic fibers. It is a result of a characteristic cloth (post-dyed). Unless post-dyed (silver coating after weaving), it can be judged that the change in surface resistance is small and durable.

次に、前記生体情報取得用電極５を用いて水分（発汗）センサーを作製し、実際に測定できることを確認した。電極材料として銀被覆有機繊維を用い、水分センサー（１）は、銀メッキ繊維製で導電性ウェアラブルニット生地（表面抵抗値５Ω／ｃｍ以上）を用いて構成し、水分センサー（２）は、銀メッキ繊維製で導電性ウェアラブルニットテープ（表面抵抗値０．５Ω／ｃｍ以上）を用いて構成した。水分センサー（１）、（２）は、ミツフジ株式会社製の銀メッキ繊維（商品名ＡＧｐｏｓｓ）を使用した。   Next, a moisture (sweat) sensor was produced using the bio-information acquisition electrode 5 and it was confirmed that it could actually be measured. Silver-coated organic fiber is used as the electrode material, and the moisture sensor (1) is made of silver-plated fiber and is made of conductive wearable knit fabric (surface resistance value of 5 Ω / cm or more), and the moisture sensor (2) is silver A conductive wearable knit tape (surface resistance value of 0.5 Ω / cm or more) made of plated fiber was used. For the moisture sensors (1) and (2), silver-plated fibers (trade name AGposs) manufactured by Mitsufuji Corporation were used.

評価方法は、ヘルメットと頭部を固定するヘッドバンド３に銀被覆有機繊維製電極（布状電極５）を製作し、頭皮（額部分）と接触するように帽体２の内部に設置し、頭皮（額部分）に発生する水分による静電容量変化を測定した。実際には、前記布状電極５に所定量の水を吸収させてその静電容量の変化を測定した。測定装置には、Kaise デジタルマルチメーター ＫＴ−２０１１を用いた。その結果を図６に示す。   In the evaluation method, a silver-coated organic fiber electrode (cloth-like electrode 5) is manufactured on the headband 3 for fixing the helmet and the head, and is placed inside the cap body 2 so as to come into contact with the scalp (forehead). The change in capacitance due to moisture generated on the scalp (forehead) was measured. Actually, the cloth-like electrode 5 was allowed to absorb a predetermined amount of water, and the change in capacitance was measured. A Kaise digital multimeter KT-2011 was used as a measuring device. The result is shown in FIG.

図６より、水分量に応じて静電容量が変化しており、頭皮（額部分）と接触するようにヘルメット内部に生体情報取得用電極５を設置し、頭皮（額部分）に発生する水分による静電容量の変化を検知することができることが分かった。   As shown in FIG. 6, the capacitance changes according to the amount of water, and the biological information acquisition electrode 5 is placed inside the helmet so as to come into contact with the scalp (forehead), and moisture generated in the scalp (forehead). It was found that the change in capacitance due to can be detected.

また、前記生体情報取得用電極５を用いて脳波情報取得の実験を行なった。実験方法は、ヘルメットと頭部を固定するヘッドバンド３に生体情報取得用電極５として、銀被覆有機繊維製電極（布状電極）を製作し、頭皮（額部分）と接触するようにヘルメット内部に、設置し、頭皮（額部分）から市販の脳波計で脳波を計測した。前記生体情報取得用電極５で脳波を取得できることが確認できた。   In addition, an experiment for acquiring electroencephalogram information was performed using the biological information acquiring electrode 5. In the experiment method, a silver-coated organic fiber electrode (cloth-like electrode) is manufactured as a biological information acquisition electrode 5 on the headband 3 that fixes the helmet and the head, and the inside of the helmet is in contact with the scalp (forehead). The brain waves were measured using a commercially available electroencephalograph from the scalp (forehead). It was confirmed that an electroencephalogram could be acquired with the biological information acquisition electrode 5.

上記方法で脳波計測、温度・湿度データを計測し、タブレットパソコン画面上に脳波データを解析し、（１）注意力／集中力、（２）落ち着き／リラックスとして知らせることが可能同時に、（３）ヘルメット内温度／湿度、（４）ヘルメット外部の温度に関して同時に計測し知らせることが可能であり、そのモニター画面の表示例を図７に示す。   EEG measurement, temperature / humidity data can be measured by the above method, and EEG data can be analyzed on the tablet PC screen to inform (1) attention / concentration, (2) calm / relax, and (3) It is possible to simultaneously measure and notify the temperature / humidity inside the helmet and (4) the temperature outside the helmet, and a display example of the monitor screen is shown in FIG.

このように、電極材料が銀被覆有機繊維あるいは銀被覆有機繊維を含有した複数の繊維によって形成される生体情報取得用電極を、ヘルメット内部に設置し、頭皮に柔軟に接触させて、苦痛を与えることなく生体情報を取得することができた。更に、電極材料に使用した、銀被覆有機繊維は分極電圧が低く、安全で安定した計測が可能となる。   In this way, the electrode material is formed of silver-coated organic fibers or a plurality of fibers containing silver-coated organic fibers, and the biometric information acquisition electrode is placed inside the helmet and flexibly brought into contact with the scalp to give pain. It was possible to obtain biometric information without any problems. Furthermore, the silver-coated organic fiber used for the electrode material has a low polarization voltage, and enables safe and stable measurement.

以上説明した通り、本発明に係るスマートヘルメットは、電極材料が銀被覆有機繊維あるいは銀被覆有機繊維を含有する複数の繊維によって形成された生体情報取得用電極を設置したので、被験者がヘルメットを装着したときの当該生体情報取得用電極の頭皮接触部に触れる感触が良く、圧迫による苦痛もなく、インピーダンス計測の信頼度が向上し、安定した生体情報得ることができる。   As described above, the smart helmet according to the present invention is equipped with the electrode for biometric information acquisition in which the electrode material is formed of silver-coated organic fibers or a plurality of fibers containing silver-coated organic fibers, so that the subject wears the helmet In this case, the touch to the scalp contact portion of the biometric information acquisition electrode is good, there is no pain caused by compression, the reliability of impedance measurement is improved, and stable biometric information can be obtained.

また、生体情報以外の環境情報、体動情報を計測するセンサーで同時に計測し、演算し無線通信デバイスを使い被験者情報を配信し、画面で状況を知ることができる。上記情報を蓄積し、ビッグデータとの関係付けにより、健康悪化の前兆を予知し危険状態から身を守るシステムの提供ができる。   Moreover, it can measure simultaneously with the sensor which measures environmental information other than biometric information, and body movement information, calculates, delivers test subject information using a wireless communication device, and can know a condition on a screen. By accumulating the above information and associating it with big data, it is possible to provide a system for predicting signs of health deterioration and protecting yourself from dangerous conditions.

本発明はヘルメットに適用した例を示したが、帽子等、頭部に被るものを対象とし、人以外の動物でも生体情報取得も可能である。   Although the present invention is applied to a helmet, the present invention is intended for a thing such as a hat that is worn on the head, and biological information can be obtained even in animals other than humans.

１ スマートヘルメット
２ 帽体
３ ヘッドバンド
４ あご紐
５ 生体情報取得用電極
６ 温度・湿度センサー
７ 加速度センサー
８ 温度・湿度センサー
９ バッテリー
Ｍ 被験者 DESCRIPTION OF SYMBOLS 1 Smart helmet 2 Cap body 3 Headband 4 Chin string 5 Electrode for biometric information acquisition 6 Temperature / humidity sensor 7 Acceleration sensor 8 Temperature / humidity sensor 9 Battery M Subject

Claims (5)

ヘッドバンド若しくはあご紐の皮膚に接触する部位に生体情報取得用電極を備え、該生体情報取得用電極は、電極材料が銀被覆有機繊維あるいは銀被覆有機繊維を含有する複数の繊維であり、これら導電性繊維と、非導電性繊維とを織り加工又は編み加工で構成され柔軟性を持つ導電性布からなることを特徴とするスマートヘルメット。   A biological information acquisition electrode is provided in a portion of the headband or chin string that contacts the skin, and the biological information acquisition electrode is made of silver-coated organic fibers or a plurality of fibers containing silver-coated organic fibers. A smart helmet characterized in that it is made of a conductive cloth having flexibility, which is formed by weaving or knitting conductive fibers and non-conductive fibers. 前記電極材料に使用される銀被覆有機繊維の太さが３０〜１５０デニールの集合体である請求項１記載のスマートヘルメット。   The smart helmet according to claim 1, wherein the silver-coated organic fiber used for the electrode material is an aggregate having a thickness of 30 to 150 denier. 前記銀被覆有機繊維は、有機繊維への銀被覆量が有機繊維の重量に対して５〜３０重量％である請求項１又は２記載のスマートヘルメット。   The smart helmet according to claim 1 or 2, wherein the silver-coated organic fiber has a silver coating amount of 5 to 30% by weight based on the weight of the organic fiber. 前記銀被覆有機繊維は、表面抵抗が２０Ω／ｃｍ以下である請求項１〜３何れか１項に記載のスマートヘルメット。   The smart helmet according to claim 1, wherein the silver-coated organic fiber has a surface resistance of 20 Ω / cm or less. 前記銀被覆有機繊維は、比重が１．４〜１．８である請求項１〜４何れか１項に記載のスマートヘルメット。   The smart helmet according to any one of claims 1 to 4, wherein the silver-coated organic fiber has a specific gravity of 1.4 to 1.8.
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