JPH0684914B2 - Pressure distribution measurement sensor - Google Patents
Pressure distribution measurement sensorInfo
- Publication number
- JPH0684914B2 JPH0684914B2 JP62197565A JP19756587A JPH0684914B2 JP H0684914 B2 JPH0684914 B2 JP H0684914B2 JP 62197565 A JP62197565 A JP 62197565A JP 19756587 A JP19756587 A JP 19756587A JP H0684914 B2 JPH0684914 B2 JP H0684914B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pressure distribution
- distribution
- substance
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は物体の底面が置かれている面に及ぼす圧力およ
びその分布を測定するための圧力分布測定センサーに関
するものである。この圧力分布測定センサーは、例え
ば、坐りごこちの良い椅子の設計時に椅子に及ぼす人体
の圧力を測定するためのセンサーして使用され得る。あ
るいは、風洞実験の際、風洞中に設置された物体の表面
に及ぼす風圧分布の測定に使用され得る。また、タイヤ
やキャタピラの接地圧の圧力分布の測定等広範囲に使用
され得る。Description: TECHNICAL FIELD The present invention relates to a pressure distribution measuring sensor for measuring pressure exerted on a surface on which a bottom surface of an object is placed and its distribution. This pressure distribution measuring sensor can be used as a sensor for measuring the pressure of a human body exerted on a chair when a comfortable chair is designed, for example. Alternatively, it can be used to measure the wind pressure distribution exerted on the surface of an object installed in the wind tunnel during a wind tunnel experiment. Further, it can be used in a wide range such as measurement of pressure distribution of ground pressure of tires and tracks.
（従来技術とその問題点） 従来から知られている圧力の測定用センサーとしては、
圧電素子の様に圧力を直接電圧に変換するもの、金属ス
トレンゲージ、半導体ストレンゲージ等の様に圧力を電
気抵抗に変換して測定するもの、差動トランスの様にイ
ンダクタンスを利用するもの、容量マノメータのように
圧力を静電容量の変化に変換して測定するもの等があ
る。これらのセンサーは圧力の付加された面のうち、一
個所の圧力値のみしか測定することができないため、面
に働く圧力の分布を測定するためには、センサーを複数
個、例えば10個×10個のマトリックス状に面に張りつけ
て設定することが必要である。また、このようにして、
センサーをマトリックス状に設置した場合にも、マトリ
ックス状に設置したセンサーの配置間隔より微細な圧力
の分布を測定することは出来ないと言う不都合がある。(Prior art and its problems) As a conventionally known pressure measuring sensor,
Piezoelectric elements that directly convert pressure into voltage, metal strain gauges, semiconductor strain gauges that convert pressure into electrical resistance for measurement, differential transformers that use inductance, and capacitance There is a manometer or the like that measures pressure by converting it into a change in capacitance. Since these sensors can measure only the pressure value at one point on the surface to which pressure is applied, in order to measure the distribution of pressure acting on the surface, a plurality of sensors, for example, 10 × 10 It is necessary to attach them to the surface in a matrix and set them. Also, in this way,
Even when the sensors are arranged in a matrix, there is a disadvantage that it is impossible to measure a pressure distribution finer than the arrangement interval of the sensors arranged in a matrix.
一方、圧力の分布を直接に測定出来るセンサーとして
は、発色剤をマイクロカプセルの中に封じたものの塗布
層に圧力を加え、マイクロカプセルを破壊させて圧力の
分布を測定するものが知られている。このセンサーは前
述の圧力分布測定センサーと異なり、圧力分布を測定出
来ると言う点では優れているが、感圧機構がマイクロカ
プセルの破壊を利用するものであるため、一度測定した
ら、再度使用出来ないと言う欠点がある。また、この方
法では圧力のかかった状態から圧力の無い状態に移行す
る時の圧力分布の変動を測定することが原理的に不可能
である。また、この圧力分布測定フィルムは人体の計
測、例えば、足の裏の圧力分布の測定に使用する場合等
のように、圧力が変動ししかもその圧力の変動自体に意
味がある様な場合には、圧力分布の時間的な変動を測定
出来ないため、利用することが出来ないという欠点があ
る。On the other hand, as a sensor that can directly measure the pressure distribution, a sensor is known in which a color former is enclosed in microcapsules and pressure is applied to the coating layer to break the microcapsules and measure the pressure distribution. . This sensor is different from the above-mentioned pressure distribution measuring sensor in that it can measure the pressure distribution, but since the pressure-sensitive mechanism utilizes the destruction of the microcapsules, once it is measured, it cannot be used again. There is a drawback to say. In addition, in this method, it is theoretically impossible to measure the fluctuation of the pressure distribution when the pressure-applied state changes to the pressure-free state. In addition, this pressure distribution measuring film is used for measuring the human body, for example, when it is used for measuring the pressure distribution on the sole of the foot, when the pressure fluctuates and the fluctuation itself has a meaning. However, there is a drawback that it cannot be used because the time variation of the pressure distribution cannot be measured.
（発明の目的） 本発明の目的は、圧力の分布の測定に当たって、圧力の
分布の定量的把持とともにその経時的変動を測定して、
圧力分布の経時的変動に含まれる情報を検出することが
可能な圧力分布測定センサーを提供することにある。(Object of the invention) In measuring the distribution of pressure, the object of the present invention is to quantitatively grasp the distribution of pressure and measure its variation over time,
It is an object of the present invention to provide a pressure distribution measuring sensor capable of detecting information contained in a time-dependent change in pressure distribution.
（目的を達成するための手段） 上記目的を達成するため、本発明の圧力分布測定センサ
ーは光学的に透明な電導性基板と他の導体との間に螢光
体とゴム状物質からなる膜を挟み、この透明な電導性基
板と他の導体との間に電圧を加えて、螢光体を発光させ
るようにした電圧発光素子よりなっており、素子を構成
する電極間に圧力を付加して発光強度を変化させ、その
光強度分布を測定することにより、素子に付加された圧
力分布およびその経時変動を検出することを特徴とす
る。(Means for Achieving the Object) In order to achieve the above object, the pressure distribution measuring sensor of the present invention comprises a film made of a fluorescent substance and a rubber-like substance between an optically transparent conductive substrate and another conductor. It is composed of a voltage light emitting element that applies a voltage between this transparent conductive substrate and another conductor so that the fluorescent substance emits light, and pressure is applied between the electrodes forming the element. It is characterized in that the pressure distribution applied to the element and its change over time are detected by changing the emission intensity and measuring the light intensity distribution.
（作用） 本発明の圧力分布測定センサーは光学的に透明な電導性
基板と他の導体により、電圧の印加で発光する螢光体お
よび付加圧力により縮むゴム状物質からなる膜とを挟ん
だ電圧発光素子、およびそのゴム状物質を圧力変化によ
り電気抵抗の変化する感圧性ゴム状物質に置き換えた膜
とからなる圧力発光素子よりなっているため、本発明の
測定法に使用する圧力分布測定センサーに電圧を印加し
た状態で、ゴム状物質の上部の導体に圧力を付加する
と、圧力の付加された部分のゴム状物質が縮み、電圧発
光素子の電極間距離が小さくなり、あるいは、感圧ゴム
状物質の電気抵抗が変化して螢光体の発光強度が増大す
る。この発光強度の増加を光学的に透明な電導性基板を
通して観察することにより、圧力分布を検出することが
可能となる。この際、電場の強度により発色する色彩が
異なる螢光体を混合して使用することにより、圧力の違
いを色彩の差として捕らえることも出来る。(Function) The pressure distribution measuring sensor of the present invention has a voltage between an optically transparent conductive substrate and another conductor that sandwiches a fluorescent substance that emits light when a voltage is applied and a film made of a rubber-like substance that contracts by an applied pressure. A pressure distribution measuring sensor used in the measuring method of the present invention, which comprises a light emitting element and a pressure light emitting element comprising a film in which the rubber-like substance is replaced with a pressure-sensitive rubber-like substance whose electric resistance changes with pressure change. When a pressure is applied to the conductor above the rubber-like substance with a voltage applied to the rubber-like substance, the rubber-like substance in the portion to which the pressure is applied contracts, and the distance between the electrodes of the voltage light-emitting element decreases, or the pressure-sensitive rubber The electrical resistance of the particulate material changes and the emission intensity of the phosphor increases. By observing this increase in emission intensity through the optically transparent conductive substrate, it becomes possible to detect the pressure distribution. At this time, the difference in pressure can also be captured as the difference in color by mixing and using the fluorescent substances having different colors that are colored depending on the strength of the electric field.
この観察法の特徴は、目視、光学カメラによる写真撮影
をはじめ、ビデオカメラを通して映像信号としてコンピ
ュータに入力して解析するなど、通常の手法がそのまま
使用出来る点にある。しかも、本発明の圧力分布測定セ
ンサーによれば、単に圧力分布の測定が出来るのみなら
ず、上述のように圧力分布の経時的変動までも検出する
ことが可能となり、産業の発達に寄与するところが大で
ある。The feature of this observation method is that ordinary methods such as visual observation, taking a photograph with an optical camera, and inputting to a computer as a video signal through a video camera for analysis can be used as they are. Moreover, according to the pressure distribution measuring sensor of the present invention, not only the pressure distribution can be simply measured, but also the temporal variation of the pressure distribution can be detected as described above, which contributes to the development of the industry. Is large.
（実施例） 以下、図面に基づき本発明の実施例について詳細に述べ
る。(Example) Hereinafter, the Example of this invention is described in detail based on drawing.
第１図は本発明に係る圧力分布測定センサーの一例の断
面図である。この図において、１は約350度に加熱した
硬質ガラス製の基板の上に１％の塩化アンチモンを添加
した塩化スズ−エタノール溶液をスプレーすることによ
り、アンチモンをドープした酸化スズの膜を被覆して調
製した光学的に透明な電導性基板、２は硫化亜鉛に銅を
ドープした電場発光用の螢光体を50wt％添加混練したシ
リコンゴムからなる膜、３はアルミニウムを蒸着するこ
とにより形成した電極、４は絶縁膜、５は電圧発光素子
用の電源、６はセンサー試験圧力を付加するために使用
した二重円筒形の物体、７は撮影装置。こうした組み合
わせで光学的に透明な電導性基板の側から写真撮影を行
った結果を図２に示す。図に斜線で示した部分が二重円
筒形の物体を用いて圧力を付加したことにより発光した
部分である。FIG. 1 is a sectional view of an example of a pressure distribution measuring sensor according to the present invention. In this figure, 1 is a tin glass-ethanol solution containing 1% antimony chloride added to a hard glass substrate heated to about 350 ° C. to coat an antimony-doped tin oxide film. The optically transparent conductive substrate prepared by the above, 2 is a film made of silicon rubber in which 50 wt% of a fluorescent substance for electroluminescence which is doped with zinc sulfide is added and kneaded, and 3 is formed by depositing aluminum Electrodes, 4 is an insulating film, 5 is a power source for a voltage light emitting element, 6 is a double cylindrical object used for applying a sensor test pressure, and 7 is a photographing device. FIG. 2 shows the result of taking a photograph from the side of the optically transparent conductive substrate with such a combination. The shaded portion in the figure is the portion that emitted light when pressure was applied using a double-cylindrical object.
（発明の効果） 以上詳述したように、本発明の圧力分布測定センサーに
を使用すれば、次に列挙するような効果を期待すること
が出来る。(Effects of the Invention) As described in detail above, when the pressure distribution measuring sensor of the present invention is used, the effects listed below can be expected.
（１）物体に及ぼす圧力分布を発光強度の分布として測
定出来るのみならず、圧力分布の経時的変動をも測定す
ることが出来る。(1) Not only the pressure distribution exerted on the object can be measured as the distribution of the emission intensity, but also the temporal variation of the pressure distribution can be measured.
（２）電場の強度により発色する色彩の異なる螢光体を
混合して使用することにより、圧力の違いを色彩の差と
して捕らえることが出来る。(2) By mixing and using fluorescent substances having different colors which are colored depending on the strength of the electric field, the difference in pressure can be captured as the difference in color.
（３）螢光体が発色するために必要な最小限度の電圧値
より僅かに低い電圧を螢光体に印加した状態で、素子に
圧力を付加することにより、圧力を付加した部分のみを
発光させることが出来る。(3) By applying pressure to the element while applying a voltage slightly lower than the minimum voltage value required for the fluorescent material to develop color, only the portion to which pressure is applied emits light. It can be done.
第１図は本発明の一実施例の全体的な構成を示す断面
図。第２図は本発明を実施した結果得られた圧力の分布
図で、斜線の部分の圧力が高いことを示す。 １はガラス基板の上に透明電極を付けた光学的に透明な
電導性基板 ２は螢光体およびゴム状物質からなる層 ３は電極 ４は絶縁膜 ５は電圧発光素子用の電源 ６はセンサーに圧力を付加するための２重円筒形の物体 ７は撮影装置FIG. 1 is a sectional view showing the overall construction of an embodiment of the present invention. FIG. 2 is a pressure distribution chart obtained as a result of carrying out the present invention, showing that the pressure in the shaded area is high. 1 is an optically transparent conductive substrate having a transparent electrode on a glass substrate 2 is a layer made of a fluorescent substance and a rubber-like substance 3 is an electrode 4 is an insulating film 5 is a power source for a voltage light emitting device 6 is a sensor Double cylindrical object 7 for applying pressure to the camera
Claims (1)
からなる弾性発光層と導電体層とを順次積層し、かつ電
導性透明基板と導電体層との間に電圧を印加する手段及
び弾性発光層からの発光強度を測定する手段をそれぞれ
設けたことを特徴とする圧力分布測定センサー。1. An elastic light emitting layer made of a fluorescent substance and a rubber-like substance and a conductor layer are sequentially laminated on a conductive transparent substrate, and a voltage is applied between the conductive transparent substrate and the conductor layer. A pressure distribution measuring sensor, characterized in that it is provided with a means and a means for measuring the emission intensity from the elastic light emitting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62197565A JPH0684914B2 (en) | 1987-08-06 | 1987-08-06 | Pressure distribution measurement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62197565A JPH0684914B2 (en) | 1987-08-06 | 1987-08-06 | Pressure distribution measurement sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6439534A JPS6439534A (en) | 1989-02-09 |
| JPH0684914B2 true JPH0684914B2 (en) | 1994-10-26 |
Family
ID=16376616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62197565A Expired - Lifetime JPH0684914B2 (en) | 1987-08-06 | 1987-08-06 | Pressure distribution measurement sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0684914B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1682860B1 (en) * | 2003-11-05 | 2011-04-20 | Innovative Scientific Solutions, Inc. | Method for determining a surface contact force |
-
1987
- 1987-08-06 JP JP62197565A patent/JPH0684914B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6439534A (en) | 1989-02-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |