JP5522337B2 - Cylindrical expansion contact pressure calibration method - Google Patents

Cylindrical expansion contact pressure calibration method Download PDF

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JP5522337B2
JP5522337B2 JP2008116278A JP2008116278A JP5522337B2 JP 5522337 B2 JP5522337 B2 JP 5522337B2 JP 2008116278 A JP2008116278 A JP 2008116278A JP 2008116278 A JP2008116278 A JP 2008116278A JP 5522337 B2 JP5522337 B2 JP 5522337B2
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pressure
contact pressure
sample
calibration method
cylinder
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JP2009244247A (en
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幸哉 小南
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株式会社エイエムアイ・テクノ
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産業上の利用分野Industrial application fields

この発明は、柔軟で曲面である体の表面に掛かる拘束圧、圧迫圧、体圧などを計測する接触圧計の計測精度や、再現性を確認する校正方法に関するものである。圧迫値は体に大きく影響する情報であるが、医療福祉分野では、あいまいな計測値を示す体圧計などにより信頼を得られてないのが現状である。  The present invention relates to a calibration method for confirming the measurement accuracy and reproducibility of a contact pressure gauge that measures a restraint pressure, a compression pressure, a body pressure, and the like applied to a body surface that is flexible and curved. The compression value is information that greatly affects the body, but in the medical and welfare field, the current situation is that the pressure is not obtained by a body pressure gauge that shows an ambiguous measurement value.

従来の柔軟面の接触圧校正法として、水に受圧センサを水平に沈めて面圧を掛け、水深を計って行う方法があったが平面に限られており、人体や寝具などは曲面であるため実用面には向いていなかった。また、容器内に受圧センサを入れて容器内を加圧する方法は、受圧センサへの加圧が面圧ではなく立体加圧であり、受圧センサの硬さや厚みの影響などが現れず、実際の計測は接触面であるため校正とはいい難い方法であった。  As a conventional method for calibrating the contact pressure of a flexible surface, there has been a method in which a pressure sensor is horizontally submerged in water to apply a surface pressure and measure the water depth, but it is limited to a flat surface, and the human body and bedding are curved surfaces Therefore, it was not suitable for practical use. In addition, the method of putting the pressure sensor in the container and pressurizing the container is not a surface pressure but a three-dimensional pressure, and the effect of hardness and thickness of the pressure sensor does not appear. Since measurement is a contact surface, calibration is a difficult method.

発明が解決しようとする課題Problems to be solved by the invention

したがって、例えば下腿を圧迫するサポーターの圧迫圧を知る方法は、生地の伸縮力や曲率を計算して行われるが、実際の体は曲面で柔らかく変形するため計算では求めきれないのが実情である。ＪＩＳやＩＳＯなどの計測規格がない現状で各計器の計測精度を示す規定がなく提示方法がまちまちである。また提示されてないものも多くある。  Therefore, for example, the method of knowing the compression pressure of the supporter that compresses the lower leg is performed by calculating the stretch force and curvature of the fabric, but the actual body is deformed softly with a curved surface, so it is actually impossible to calculate . In the current situation where there are no measurement standards such as JIS and ISO, there are no regulations indicating the measurement accuracy of each instrument, and there are various presentation methods. There are also many that are not presented.

課題を解決するための手段Means for solving the problem

円筒状の繊維などの伸縮材からなる試料７を内部加圧で拡張し、規定した周径に達した時点の内部圧力を計測して試料７の圧迫圧を事前に知ったうえで、実測を試料７を規定曲面の円柱Ａに装着して接触圧計で計測を行い、その計測値を比較で観る方法で、筒状または袋状の伸縮材からなる試料７を内部加圧にて円筒状に拡張し、規定した周径に達した時点の内部圧力を計測して試料７の圧迫圧で基準値とする。実測は規定した周径である規定曲面の円柱１０に試料７を装着して、規定曲面の円柱１０と試料７間の接触圧の計測値Ｃを読み取り、内部圧力の計測値Ａとの差を誤差として示すことができる。規定曲面を数条件設け校正を行う方法である。  The sample 7 made of a stretchable material such as a cylindrical fiber is expanded by internal pressure, and the internal pressure when the specified circumference is reached is measured to know the compression pressure of the sample 7 in advance. A sample 7 is mounted on a cylinder A having a specified curved surface and measured with a contact pressure gauge, and the measured value is compared and the sample 7 made of a cylindrical or bag-like stretchable material is formed into a cylindrical shape by internal pressure. The internal pressure at the time of expansion and reaching the specified circumference is measured, and the compression pressure of the sample 7 is used as a reference value. In actual measurement, the sample 7 is mounted on a cylinder 10 having a specified curved surface having a specified circumference, and the measured value C of the contact pressure between the cylinder 10 having the specified curved surface and the sample 7 is read, and the difference from the measured value A of the internal pressure is calculated. It can be shown as an error. This is a method of performing calibration by setting a number of prescribed curved surfaces.

作用Action

試料７の圧迫圧を知るには、図１、図６に示す連結部６を介し両側に規定曲面の周径の円形板２を備え、互いの円形板２の周囲を、柔軟なフィルムや薄いゴムなどからなる通気性がない膜１にたわみをつけて覆い、その内部に中空管５で配管されたエアポンプやコンプレッサーなどの加圧装置４と、圧力計３を備え構成する装置に、図２に示す軸方向の引っ張り力を一定にして装着できるように間隔線１１や、縦横の格子線、点などの印しを入れた筒状の伸縮材でなる試料７を、両円形板２の全面に掛かるようにし周囲を均等にした状態で装着する。図３、図７に示す加圧装置４で加圧して膜１を介し試料７を円形板２と同じ径まで拡張させ、両間隔線１１や格子線、丸線、点などの目印を着け間隔や形状を観て均等で装着してるか、規定の間隔Ｄであるかなどを確認し、圧力計３にて内部圧力の計測値Ａを読み取る。そこで試料７の圧迫圧は、円形板２の周径、間隔線１１の間隔Ｄの条件下の内部圧力の計測値Ａである。膜１の変形に要する抵抗圧力は誤差とする。  In order to know the compression pressure of the sample 7, a circular plate 2 having a circumferential surface with a prescribed curved surface is provided on both sides via a connecting portion 6 shown in FIGS. 1 and 6, and a flexible film or a thin film is provided around each circular plate 2. A device comprising a pressure gauge 3 and a pressure device 3 such as an air pump and a compressor, which is covered with a membrane 1 made of rubber and having no air permeability and is bent and covered with a hollow tube 5, is shown in FIG. A sample 7 made of a cylindrical expansion / contraction material with markings such as spacing lines 11 and vertical and horizontal grid lines and dots so that the axial pulling force shown in FIG. Install it on the entire surface with the circumference even. 3 and 7, the sample 7 is expanded to the same diameter as the circular plate 2 through the membrane 1 by applying pressure with the pressurizing device 4, and marks such as both spacing lines 11, grid lines, round lines, and dots are attached. The shape of the internal pressure is checked to see if it is evenly mounted or whether it is at a specified interval D, and the pressure gauge 3 reads the measured value A of the internal pressure. Therefore, the compression pressure of the sample 7 is a measured value A of the internal pressure under the condition of the circumference of the circular plate 2 and the interval D of the interval line 11. The resistance pressure required for the deformation of the film 1 is assumed to be an error.

実施例として、図４に於いて事前に膜１と試料７の間に接触圧計８の受圧センサ９を設置し、試料７が円形板２と同径まで拡張させ、間隔Ｄなどを確認後、接触圧計８で拡張時の接触圧の計測値Ｂを読み取り、内部圧力の計測値Ａとの値の差が、この規定曲面に於いての接触圧計８と受圧センサ９での計測誤差である。また、図５に示す円形板２と同じ直径の規定曲面の円柱１０の表面に受圧センサ９を着け、試料７の間隔線１１の両間を間隔Ｄになるように装着し、接触圧計８で実測による接触圧の計測値Ｃを読み取り、基準圧である内部圧力の計測値Ａとの値の差が、この規定曲面と規定曲面の円柱１０の硬さ影響を受けた計測誤差となる。規定曲面の円柱１０は柔らかさが異なった材質も校正が可能である。試料７の素材の伸縮性が極端に衰えない周径で規定曲面を設定するが、その確認は規定曲面の円柱１０で接触圧計測の校正後、再度、図２、図３における加圧にて拡張させ内部圧力の計測値Ａが再現値であるかで判断できる。  As an example, in FIG. 4, a pressure sensor 9 of a contact pressure gauge 8 is installed in advance between the membrane 1 and the sample 7, the sample 7 is expanded to the same diameter as the circular plate 2, and after confirming the distance D and the like, The contact pressure measurement value B at the time of expansion is read by the contact pressure gauge 8, and the difference from the measurement value A of the internal pressure is a measurement error between the contact pressure gauge 8 and the pressure sensor 9 on the specified curved surface. Further, a pressure sensor 9 is attached to the surface of a cylinder 10 having a predetermined curved surface having the same diameter as that of the circular plate 2 shown in FIG. The measurement value C of the contact pressure obtained by actual measurement is read, and the difference between the measured value A and the internal pressure, which is the reference pressure, becomes a measurement error affected by the hardness of the cylinder 10 of the specified curved surface and the specified curved surface. The cylinder 10 having the specified curved surface can be calibrated even for materials having different softness. The specified curved surface is set with a circumference that does not cause a significant decrease in the stretchability of the material of the sample 7, but the confirmation is made by pressurizing in FIGS. 2 and 3 again after calibrating the contact pressure measurement with the cylinder 10 of the specified curved surface. It can be determined whether the measured value A of the internal pressure is a reproduction value.

発明の効果Effect of the invention

本発明により、伸縮材からなる試料７を規定された曲面条件での圧迫値を知ることで、実際の規定曲面の円柱１０の面に於いて接触圧を計測し、許容誤差や再現性を確認できる単純明解な校正方法である。それにより許容誤差が提示された接触圧計８で、柔らかさや曲面などが複雑な体の各部位の拘束圧や体圧など信頼ある計測が可能となる。  According to the present invention, the contact pressure is measured on the surface of the cylinder 10 of the actual specified curved surface by knowing the compression value of the sample 7 made of elastic material under the specified curved surface conditions, and the tolerance and reproducibility are confirmed. It is a simple and straightforward calibration method that can be done. As a result, the contact pressure gauge 8 in which an allowable error is presented enables reliable measurement such as restraint pressure or body pressure of each part of the body having a complicated softness or curved surface.

本発明の構成の外観図  External view of the configuration of the present invention 本発明の試料装着時の外観図  External view when mounting the sample of the present invention 本発明の拡張時の外観図  External view of the present invention when expanded 本発明の接触圧計の校正時の外観図  External view at the time of calibration of the contact pressure gauge of the present invention 本発明の円柱による接触圧計の校正時の外観図  External view at the time of calibration of the contact pressure gauge by the cylinder of the present invention 本発明の構成の断面図  Sectional view of the configuration of the present invention 本発明の拡張時の断面図  Sectional view during expansion of the present invention

符号の説明Explanation of symbols

１は膜
２は円形板
３は圧力計
４は加圧装置
５は中空管
６は連結部
７は試料
８は接触圧計
９は受圧センサ
１０は規定曲面の円柱
１１は間隔線
Ａは内部圧力の計測値
Ｂは拡張時の接触圧の計測値
Ｃは実測による接触圧の計測値
Ｄは間隔1 is a membrane 2 is a circular plate 3 is a pressure gauge 4 is a pressurizing device 5 is a hollow tube 6 is a connecting part 7 is a sample 8 is a contact pressure gauge 9 is a pressure sensor 10 is a specified curved cylinder 11 is a space 11 The measured value B of the contact pressure is the measured value C of the contact pressure at the time of expansion.

Claims (5)

（イ）両側に円形板２を備え、たわんだ状態の膜１で円形板２の相互間の周囲を覆った構成である。
（ロ）膜１で覆われた内部に繋がった加圧装置４と圧力計５を備える。
（ハ）筒状または袋状で伸縮材からなる試料７が、膜１の外側を両端の円形板２の全面を覆う。
（ニ）膜１と試料７の間に、接触圧計の受圧センサ９を着ける。
以上の如く構成し、受圧センサ９の計測の校正を、基準圧の圧力計５の計測との差にて行う円筒拡張式接触圧校正法。(A) A configuration in which the circular plates 2 are provided on both sides, and the periphery between the circular plates 2 is covered with the bent film 1.
(B) A pressure device 4 and a pressure gauge 5 connected to the inside covered with the membrane 1 are provided.
(C) A sample 7 made of an elastic material in a cylindrical shape or a bag shape covers the entire surface of the circular plate 2 at both ends outside the membrane 1.
(D) A pressure sensor 9 of a contact pressure gauge is put between the membrane 1 and the sample 7.
A cylindrical expansion type contact pressure calibration method configured as described above and performing calibration of measurement of the pressure sensor 9 based on a difference from measurement of the pressure gauge 5 of the reference pressure. 試料７に間隔線１１を入れた請求項１に記載の円筒拡張式接触圧校正法。The cylindrical expansion type contact pressure calibration method according to claim 1, wherein a spacing line 11 is provided in the sample 7. 試料７に縦横の格子線や丸線や点の印しを入れた請求項１の円筒拡張式接触圧校正法。The cylindrical expanded contact pressure calibration method according to claim 1, wherein vertical and horizontal grid lines, round lines, and dots are marked on the sample 7. 円形板２と同径の規定曲面の円柱１０を加え備え、受圧センサ９を円柱１０の表面に着けて行う請求項１に記載の円筒拡張式接触圧校正法。The cylindrical expansion contact pressure calibration method according to claim 1, wherein a cylinder 10 having a specified curved surface having the same diameter as the circular plate 2 is additionally provided, and the pressure sensor 9 is attached to the surface of the cylinder 10. 規定曲面の円柱１０が、中空の筒状や容器状の請求項４に記載の円筒拡張式接触圧校正法。The cylindrical expansion contact pressure calibration method according to claim 4, wherein the cylinder 10 having a prescribed curved surface is a hollow cylinder or container.
JP2008116278A 2008-03-31 2008-03-31 Cylindrical expansion contact pressure calibration method Active JP5522337B2 (en)

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CN105067175B (en) * 2015-08-05 2018-07-20 广州科莱瑞迪医疗器材股份有限公司 A kind of contraction force test device and method
CN113654720B (en) * 2021-09-02 2023-11-17 安徽中科本元信息科技有限公司 Pneumatic flexible force sensor calibration device and calibration method

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