JPH11248409A - Method for measuring shape of seat when person is seated in it - Google Patents

Method for measuring shape of seat when person is seated in it

Info

Publication number
JPH11248409A
JPH11248409A JP6436198A JP6436198A JPH11248409A JP H11248409 A JPH11248409 A JP H11248409A JP 6436198 A JP6436198 A JP 6436198A JP 6436198 A JP6436198 A JP 6436198A JP H11248409 A JPH11248409 A JP H11248409A
Authority
JP
Japan
Prior art keywords
pressure
seat
sensor
shape
measuring
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.)
Pending
Application number
JP6436198A
Other languages
Japanese (ja)
Inventor
Hiromitsu Ogasawara
絋充 小笠原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tachi S Co Ltd
Original Assignee
Tachi S Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tachi S Co Ltd filed Critical Tachi S Co Ltd
Priority to JP6436198A priority Critical patent/JPH11248409A/en
Publication of JPH11248409A publication Critical patent/JPH11248409A/en
Pending legal-status Critical Current

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  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method which can deal with the conditions of reactions and irregular shape changes and by which the shape of a seat can be expressed in a three-dimensional picture. SOLUTION: Sensor mats 12 (12-S/B and 12-S/C) are put on the seating surfaces of a seat 10 to be tested and the static flexure of the seat is measured at every pressure-sensitive sensor by pressing the corresponding templetes against the mats 12 and, at the same time, the body pressure distribution on the seat when a person to be tested is seated in the seat is measured as pressure values at every pressure-sensitive sensors. Then the whole shape of the seat 10 when the person is seated in the seat is calculated by converting the pressure values obtained by measuring the body pressure distribution into the displacement obtained by measuring the static flexure and the displacement at every pressure-sensitive sensors into absolute position data and the calculated shape is displayed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、着座状態におけ
るシート形状を測定するためのシートの着座時形状測定
方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat shape measurement method for measuring a seat shape in a seated state.

【0002】[0002]

【従来の技術】近年の自動車に対する一般ユーザーの関
心は、自動車室内のインテリア、特にシートに向けられ
ており、その傾向も、デザイン重視から、デザインに加
えた機能的性能の充実度の重視に変わりつつある。その
ため、着座姿勢の傾向や着座により変化する着座時のシ
ート形状を知ることが、自動車等のシートの研究、開発
の上での重要点となることから、着座者側の着座姿勢か
らシートの着座時形状を測定、推定することが、メーカ
ーサイドにおいては一般的に行われている。
2. Description of the Related Art In recent years, the interest of general users in automobiles has been directed to interiors of automobile interiors, particularly to seats, and the trend has shifted from emphasis on design to emphasis on functional performance in addition to design. It is getting. Therefore, it is important to know the tendency of the seating posture and the shape of the seat at the time of seating that changes with the seating, which is an important point in the research and development of seats for automobiles and the like. Measuring and estimating the time shape is generally performed on the manufacturer side.

【0003】着座姿勢の測定方法として、ストレイン・
ゲージ法が一般的に知られている。ストレイン・ゲージ
法は、ステンレス製薄板等からなる金属の薄板に等間隔
でストレインゲージ(抵抗歪式センサ)を貼付して歪量
を測定し、その歪量から各ゲージ貼付位置の曲率半径を
求めて、計算により、スムーズな曲線を得るものであ
る。
[0003] As a method of measuring the sitting posture, strain
The gauge method is generally known. In the strain gauge method, a strain gauge (resistive strain sensor) is attached at equal intervals to a thin metal plate made of stainless steel, etc., and the amount of strain is measured. From the amount of strain, the radius of curvature at each gauge attachment position is determined. Thus, a smooth curve is obtained by calculation.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、このス
トレイン・ゲージ法は、薄板の歪量から各ゲージ貼付位
置の曲率半径を求めるものであるため、たとえば、トリ
ムカバーの張力、シートパッドの弾力、およびS ばね等
の支持部材の支持力等の影響、つまり反力の条件の影響
の大きい箇所や、シート表面の部位の境界部分等のよう
な窪みのある部分等のような、曲率変化の出難い変則的
な形状変化を生じる箇所での測定には不向きであるとい
える。つまり、ストレイン・ゲージ法は、シートの着座
時形状の概略の測定には向いているが、着座時のシート
の全体形状の容易、かつ正確な測定には不向きであると
いわざるを得ない。
However, since the strain gauge method obtains the radius of curvature at each gauge attachment position from the amount of strain of the thin plate, for example, the tension of the trim cover, the elasticity of the seat pad, and S The effect of the support force of the support member such as a spring, that is, the change in the curvature is unlikely to occur, for example, in a place where the effect of the reaction force is large, or in a concave portion such as a boundary portion of the seat surface. It can be said that it is unsuitable for measurement at a place where an irregular shape change occurs. In other words, the strain gauge method is suitable for roughly measuring the shape of a seat when the seat is seated, but it cannot be said that it is not suitable for easy and accurate measurement of the overall shape of the seat when seated.

【0005】そして、ストレイン・ゲージ法は、各ゲー
ジの貼付位置における曲率半径を求めるものであること
から、着座によって直接的に変形する部分、つまり着座
者身体の密着部分の形状算出に適している反面、着座者
身体の密着しない部分、たとえばシートバックの上下端
部、シートクッションの前後端部、あるいはそれぞれの
左右の側端部等の形状測定は行えないとともに、着座者
身体の密着部分と非密着部分との境界部も不明瞭とな
る。つまり、ストレイン・ゲージ法による形状測定の際
においては、この着座者身体の密着しないシートバック
の上下端部、シートクッションの前後端部等が、着座姿
勢、シート形状のいずれの対象にもなり得ないため、こ
のストレイン・ゲージ法においてシートの着座時形状を
全体的に認識、表示することは、きわめて困難といわざ
るを得ない。
[0005] The strain gauge method is for calculating the radius of curvature at the position where each gauge is attached. Therefore, the strain gauge method is suitable for calculating the shape of a portion that is directly deformed by sitting, that is, a contact portion of the occupant's body. On the other hand, it is not possible to measure the shape of the part where the occupant's body does not adhere, for example, the upper and lower ends of the seat back, the front and rear ends of the seat cushion, or the left and right side edges, etc. The boundary with the contact portion is also unclear. In other words, when measuring the shape by the strain gauge method, the upper and lower ends of the seat back and the front and rear ends of the seat cushion that do not adhere to the body of the seated occupant can be targets of any of the sitting posture and the seat shape. Therefore, it cannot be said that it is extremely difficult to recognize and display the shape of the seat as a whole in this strain gauge method.

【0006】また、このストレイン・ゲージ法では、特
定の基準点からの距離として、各ゲージ貼付位置の曲率
半径が求められるため、基準点から遠い位置のストレイ
ンゲージにおいては、基準点に近い位置のストレインゲ
ージからの累積誤差により、測定位置のずれが生じる虞
れがある。従って、測定の正確性の低下を伴いやすい。
In this strain gauge method, the radius of curvature of each gauge attachment position is obtained as a distance from a specific reference point. Therefore, in a strain gauge far from the reference point, a position near the reference point is determined. The accumulated error from the strain gauge may cause a shift in the measurement position. Therefore, the accuracy of measurement tends to be reduced.

【0007】更に、シートの設計等においては、コンピ
ュータを使用した画像処理技術により、シート形状の立
体表現(三次元的表現)が一般的に行われている。しか
し、ストレイン・ゲージ法による測定データは、二次元
的な表現にしか適用できないため、シートの着座時形状
の三次元的表現が容易に行えない。
[0007] Further, in sheet design and the like, a three-dimensional representation (three-dimensional representation) of a sheet shape is generally performed by an image processing technique using a computer. However, since the measurement data obtained by the strain gauge method can be applied only to a two-dimensional expression, the three-dimensional expression of the seated shape cannot be easily performed.

【0008】この発明は、反力の条件や変則的な形状変
化に対応可能であるとともに、三次元的な画像表現を容
易に可能とするシートの着座時形状測定方法の提供を目
的としている。
SUMMARY OF THE INVENTION An object of the present invention is to provide a method of measuring the shape of a seat at the time of seating, which is capable of coping with reaction force conditions and irregular shape changes, and which enables easy three-dimensional image expression.

【0009】[0009]

【課題を解決するための手段】この目的を達成するため
に、この発明によれば、縦方向、横方向の等間隔毎に感
圧センサの配置されたセンサマットを供試シートの着座
面に配設し、対応する型板による、センサマットを介し
た押圧によって、型板圧力と押圧ストロークとの関係を
示す供試シートの静たわみ特性を、感圧センサ毎に測定
するとともに、センサマットを介した被試験者の着座の
もとでの圧力の検出によって、被試験者の着座時におけ
る供試シートの着座面での体圧分布を、感圧センサ毎の
圧力値として測定する。
According to the present invention, a sensor mat in which pressure-sensitive sensors are arranged at regular intervals in the vertical and horizontal directions is provided on a seating surface of a test seat. Arranged, by the corresponding template, by pressing through the sensor mat, the static deflection characteristics of the test sheet showing the relationship between the template pressure and the pressing stroke are measured for each pressure-sensitive sensor, and the sensor mat is The body pressure distribution on the seating surface of the test seat when the test subject is seated is measured as a pressure value for each pressure-sensitive sensor by detecting the pressure of the test subject while the test subject is seated.

【0010】そして、体圧分布測定による感圧センサ毎
の圧力値を、静たわみ特性の測定により得られた感圧セ
ンサ毎での変位量に変換し、この感圧センサ毎の変位量
を、供試シートの外観形状に対応した絶対位置データに
それぞれ変換することによって、被試験者の着座時にお
ける供試シートの全体的な形状を算出、表示可能として
いる。
Then, the pressure value of each pressure sensor obtained by measuring the body pressure distribution is converted into a displacement amount of each pressure sensor obtained by measuring the static deflection characteristic. By converting the data into absolute position data corresponding to the external shape of the test sheet, the overall shape of the test sheet when the subject is seated can be calculated and displayed.

【0011】[0011]

【発明の実施の形態】以下、図面を参照しながらこの発
明の実施の形態について詳細に説明する。
Embodiments of the present invention will be described below in detail with reference to the drawings.

【0012】この発明に係るシートの着座時形状測定方
法においては、図1に示すように、供試シート(自動車
用シート)10の着座面にセンサマット12(シートバック
用センサマット12-S/B、シートクッション用センサマッ
ト12-S/C)が配設される。
In the method of measuring a seated shape according to the present invention, as shown in FIG. 1, a sensor mat 12 (a seat back sensor mat 12-S / S) is provided on a seating surface of a test seat (automobile seat) 10. B, sensor mat for seat cushion 12-S / C) is provided.

【0013】センサマット12(12-S/B、12-S/C) は、たと
えば、縦方向、横方向の等間隔毎に小型の感圧センサの
配置されたものであり、各感圧センサ毎の出力(信号)
を測定装置13のデータ入力部14で個別に監視、検出する
ことにより、各感圧センサ毎の圧力を計測可能に構成さ
れている。
Each of the sensor mats 12 (12-S / B, 12-S / C) has small pressure-sensitive sensors arranged at equal intervals in the vertical and horizontal directions. Output (signal)
Is individually monitored and detected by the data input unit 14 of the measuring device 13, so that the pressure of each pressure-sensitive sensor can be measured.

【0014】なお、センサマット12(12-S/B、12-S/C)
は、シートバック16、シートクッション18の少なくとも
着座面を覆って配置可能な形状、大きさにそれぞれ形成
され、その感圧センサの配列としては、たとえば、10mm
間隔における縦列43個×横列48個の配列が例示できる。
The sensor mat 12 (12-S / B, 12-S / C)
Are formed in a shape and size that can be arranged so as to cover at least the seating surface of the seat back 16 and the seat cushion 18, and the arrangement of the pressure-sensitive sensors is, for example, 10 mm.
An arrangement of 43 columns × 48 rows at intervals can be exemplified.

【0015】この発明のシートの着座時形状測定方法
を、図2のフローチャートに沿って説明する。
The method of measuring a seated shape of a seat according to the present invention will be described with reference to the flowchart of FIG.

【0016】図2を見るとわかるように、この発明にお
いては、先ず、圧力と押圧ストロークとの関係を示す供
試シート10の静たわみ特性、つまり供試シート自体が持
つクッション性が、センサマット12(12-S/B、12-S/C) の
感圧センサ毎のデータとして測定される(102) 。供試シ
ート10の圧力と押圧ストロークとの関係を示す静たわみ
特性の測定は、図3に示すように、センサマット12(12-
S/B、12-S/C) の配設された供試シートのシートバック1
6、シートクッション18の着座面を、対応する試験用の
型板、つまり背型板20、および尻型板22等により、特定
の押圧ストロークのもとでそれぞれ押圧することによっ
て行われ、その際の各感圧センサからの出力信号が、デ
ータ入力部14において監視、検出されるとともに、その
計測データが、データセーブ部24において感圧センサ毎
に個別に保存される(図1参照)。
As can be seen from FIG. 2, according to the present invention, first, the static deflection characteristic of the test sheet 10, which indicates the relationship between the pressure and the pressing stroke, that is, the cushioning property of the test sheet itself is determined by the sensor mat. It is measured as data for each of the 12 (12-S / B, 12-S / C) pressure sensors (102). As shown in FIG. 3, the measurement of the static deflection characteristic indicating the relationship between the pressure of the test sheet 10 and the pressing stroke is performed by using the sensor mat 12 (12-
(S / B, 12-S / C)
6, the seating surface of the seat cushion 18 is pressed by a corresponding test template, that is, a back template 20, a butt template 22, etc., under a specific pressing stroke. The output signal from each pressure sensor is monitored and detected by the data input unit 14, and the measurement data is individually stored for each pressure sensor by the data save unit 24 (see FIG. 1).

【0017】そして、データ変換部26において、データ
セーブ部24に保存された信号から、感圧センサ毎の型板
圧力P に対する押圧ストロークS の回帰式を、以下によ
り求める。 Sn=a1P +a2P2+a3P3+・・・ (なお、n は感圧センサを示す個別の数値(1 〜206
4)、P は圧力値、a1、a2、a3・・・ は回帰係数である。) そして、これによって、供試シート固有の圧力−押圧ス
トローク特性曲線が、感圧センサ毎に求められる(図2
の(104) )。
Then, in the data converter 26, a regression equation of the pressing stroke S with respect to the template pressure P for each pressure-sensitive sensor is obtained from the signal stored in the data saving unit 24 as follows. Sn = a 1 P + a 2 P 2 + a 3 P 3 + ··· ( Here, n individual number that indicates the pressure-sensitive sensor (1-206
4), P is the pressure value, a 1, a 2, a 3 ··· are regression coefficients. Then, a pressure-pressing stroke characteristic curve unique to the test sheet is obtained for each pressure-sensitive sensor (FIG. 2).
(104)).

【0018】なお、供試シート10のクッション性は、各
感圧センサの配置箇所に対応するトリムカバーの張力、
シートパッドの厚み、およびS ばね等の支持部材の支持
力等の条件(反力の条件)によって異なるため、その圧
力−押圧ストローク特性曲線は感圧センサ毎に異なり、
図2の(104) に示すように、反力が大きければ破線で示
す軟らかめ曲線の方向に、反力が小さければ一点鎖線で
示す硬め曲線の方向に、それぞれ傾斜する。
The cushioning property of the test sheet 10 depends on the tension of the trim cover corresponding to the location of each pressure-sensitive sensor,
The pressure-pressing stroke characteristic curve differs for each pressure-sensitive sensor because it varies depending on conditions such as the thickness of the seat pad and the supporting force of the supporting member such as the S spring (reaction force condition).
As shown by (104) in FIG. 2, if the reaction force is large, it is inclined in the direction of the soft curve indicated by the broken line, and if the reaction force is small, it is inclined in the direction of the hard curve indicated by the dashed line.

【0019】次に、図4に示すように、前工程と同様
に、供試シートのシートバック16、シートクッション18
の着座面にセンサマット12(12-S/B、12-C/C) をそれぞれ
配置した状態で、たとえば複数の被試験者に供試シート
10に順次着座してもらい、そのときの感圧センサ毎の圧
力値を測定することにより、供試シートの着座面におけ
る被試験者毎の体圧分布を測定する(図2の(106) )。
Next, as shown in FIG. 4, similarly to the previous step, the seat back 16 and the seat cushion 18 of the test sheet are used.
With the sensor mats 12 (12-S / B, 12-C / C) placed on the seating surface of the
10, the body pressure distribution of each test subject on the seating surface of the test seat is measured by measuring the pressure value of each pressure-sensitive sensor at that time ((106) in FIG. 2). .

【0020】なお、この体圧分布の圧力値は、図1に示
すように、静たわみ測定のデータと同様に、データ入力
部14に出力されて、データセーブ部24に感圧センサ毎に
保存される。
As shown in FIG. 1, the pressure value of the body pressure distribution is output to the data input unit 14 and stored in the data save unit 24 for each pressure-sensitive sensor, similarly to the static deflection measurement data. Is done.

【0021】そして、図2に示すように、(104) でデー
タ処理された静たわみ測定によるデータと、(106) の体
圧分布測定における圧力値データとを、図1で示すデー
タ変換部26において合成し、体圧分布測定の圧力値に相
当する変位量Snを、前述の回帰式により算出、変換する
(108) 。
Then, as shown in FIG. 2, the data obtained by the static deflection measurement data-processed in (104) and the pressure value data in the body pressure distribution measurement in (106) are converted into a data converter 26 shown in FIG. The displacement amount Sn corresponding to the pressure value of the body pressure distribution measurement is calculated and converted by the above-described regression equation.
(108).

【0022】次に、供試シート10の外観形状(外形形
状)が測定される(図2の(110) )。供試シート10の外
観形状の測定には、たとえば、図5に示すような、アー
ム28aの先端に検知針28b を有する、いわゆるレイアウ
トマシーン(立体形状測定器)28が用いられる。そし
て、供試シートのシートバック16、シートクッション18
の表面に沿って検知針28b を移動させ、その位置に対応
するレイアウトマシーン26からの出力信号を、図1に示
すデータ入力部14で監視、検出し、データセーブ部24に
保存することによって、供試シート10の外観形状を測定
可能に、このレイアウトマシーンは構成されている。
Next, the external shape (external shape) of the test sheet 10 is measured ((110) in FIG. 2). To measure the external shape of the test sheet 10, for example, a so-called layout machine (solid shape measuring device) 28 having a detection needle 28b at the tip of an arm 28a as shown in FIG. 5 is used. Then, the seat back 16 of the test seat and the seat cushion 18
By moving the detection needle 28b along the surface of the sensor, the output signal from the layout machine 26 corresponding to the position is monitored and detected by the data input unit 14 shown in FIG. This layout machine is configured so that the external shape of the test sheet 10 can be measured.

【0023】なお、この種のレイアウトマシーン自体は
公知であり、その構成自体はこの発明の趣旨でないた
め、ここでは詳細に説明しない。また、供試シート10の
外観形状が測定できれば足りるため、このようなレイア
ウトマシーン28に限定されず、他の装置によって供試シ
ートの外観形状を測定してもよい。
It is to be noted that this kind of layout machine itself is publicly known, and its configuration itself is not the purpose of the present invention, and will not be described in detail here. In addition, since it is sufficient that the external shape of the test sheet 10 can be measured, the external shape of the test sheet may be measured by another apparatus without being limited to the layout machine 28.

【0024】このとき、供試シート10の外観形状に対応
して、各感圧センサの相当する位置の変位量Snが、デー
タ変換部26において絶対位置データに変換され、この絶
対位置データをもとに、被試験者の着座時における供試
シートの全体的な形状が、データ処理部30において算
出、推定される(図1参照)。
At this time, the displacement amount Sn of the corresponding position of each pressure-sensitive sensor is converted into absolute position data by the data converter 26 in accordance with the external shape of the test sheet 10, and this absolute position data is also converted. At this time, the overall shape of the test seat when the subject is seated is calculated and estimated by the data processing unit 30 (see FIG. 1).

【0025】シートの着座時形状の推定は、供試シート
10の無負荷時の外形位置を基準とし、これに着座時の変
形量を補正することにより行われる。たとえば、感圧セ
ンサ毎の補正点は、所定の数式等により個別に算出され
る。そして、この補正点を感圧センサの横列毎、あるい
は縦列毎に繋ぐことによって、対応する平面におけるシ
ートの着座時形状の推定断面が得られる。
The seating shape of the seat is estimated by
This is performed by correcting the deformation amount at the time of sitting on the basis of the outer shape position at no load of 10 as a reference. For example, the correction point for each pressure-sensitive sensor is individually calculated by a predetermined mathematical formula or the like. Then, by connecting the correction points for each row or column of the pressure-sensitive sensors, an estimated cross section of the seated shape of the seat on the corresponding plane can be obtained.

【0026】これにより得られたシートの着座時推定形
状は、図1に示すように、データ処理部30からの出力デ
ータのもとで、所定の出力手段、たとえばディスプレ
イ、プロッタ等に出力、表示される(図2の(112) )。
As shown in FIG. 1, the estimated seating shape of the seat thus obtained is output and displayed on predetermined output means, for example, a display, a plotter, etc., based on output data from the data processing unit 30. ((112) in FIG. 2).

【0027】上記のように、この発明のシートの着座時
形状測定方法においては、供試シート10の体圧分布の圧
力値を、静たわみ特性の測定により得られた感圧センサ
毎での変位量に変換するため、供試シートの対応箇所、
つまり各感圧センサの相当位置で異なる反力を考慮した
変位量が得られる。つまり、供試シートの持つ反力や窪
み等の変則的な形状変化の影響を受けることなく、シー
トの着座時形状が測定できるため、この発明によれば、
供試シート10の着座時形状が容易、かつ正確に測定、推
定できる。
As described above, in the method of measuring the seated shape of the seat according to the present invention, the pressure value of the body pressure distribution of the test seat 10 is changed by the displacement for each pressure sensor obtained by measuring the static deflection characteristics. Corresponding to the test sheet,
That is, a displacement amount in consideration of a different reaction force is obtained at a corresponding position of each pressure-sensitive sensor. In other words, the seated shape of the seat can be measured without being affected by irregular shape changes such as the reaction force and the depression of the test seat.
The seated shape of the test seat 10 can be easily and accurately measured and estimated.

【0028】そして、供試シートのシートバック16、シ
ートクッション18に対するセンサマット12(12-S/B、12-S
/C) の感圧センサの位置は、予め設定されたものであ
り、この各感圧センサからの信号のもとで、静たわみ測
定のデータ、体圧分布測定の圧力値のデータがそれぞれ
検出されるため、変位量の絶対位置データの誤差は十分
に抑制される。従って、この点からも、形状測定の正確
性が向上する。
The sensor mats 12 (12-S / B, 12-S
The position of the pressure sensor of (/ C) is preset, and based on the signal from each pressure sensor, the data of the static deflection measurement and the data of the pressure value of the body pressure distribution measurement are detected respectively. Therefore, the error of the absolute position data of the displacement amount is sufficiently suppressed. Therefore, also from this point, the accuracy of the shape measurement is improved.

【0029】また、この発明は、レイアウトマシーン28
で測定した外観形状の測定データに、静たわみ特性、お
よび着座時の体圧分布をもとにした変位量を補正するこ
とで、シートの着座時形状を推定する方法であるため、
着座者身体の密着部分以外の部分、つまりシートバック
16の上下端部、シートクッション18の前後端部、あるい
はそれぞれの左右の側端部等の非密着部分の形状も容易
に測定、推定できる。従って、着座時における、供試シ
ート10の着座面の全域にわたる形状測定が容易に可能と
なり、着座者身体の密着部分、非密着部分を問わない、
シートの全体的な着座時形状の表現が適切に行える。
The present invention also relates to a layout machine 28.
In the method of estimating the seating shape of the seat, by correcting the static deflection characteristics, and the amount of displacement based on the body pressure distribution at the time of sitting, to the measurement data of the external shape measured at
The part other than the close contact part of the occupant's body, that is, the seat back
The shapes of the non-contact portions such as the upper and lower end portions 16, the front and rear end portions of the seat cushion 18, and the left and right side end portions can be easily measured and estimated. Therefore, at the time of sitting, shape measurement over the entire area of the seating surface of the test seat 10 can be easily performed.
The overall seating shape of the seat can be properly represented.

【0030】ここで、この発明の着座時形状測定方法に
おいては、感圧センサ毎の変位量がx 方向、y 方向の関
数f(x、y)値で得られるため、感圧センサ毎のデータを全
て繋ぎ合わせれば、この関数からなる変位量の画像処理
により、供試シート10の着座時形状の三次元的表現化
(立体表現化)が、容易に可能となる(図2の(114)
)。
In the seating shape measurement method of the present invention, since the displacement amount for each pressure-sensitive sensor is obtained as a function f (x, y) value in the x and y directions, the data for each pressure sensor is Are connected, the three-dimensional representation (three-dimensional representation) of the seated shape of the test seat 10 can be easily performed by image processing of the displacement amount composed of this function ((114) in FIG. 2).
).

【0031】ところで、この発明の実施の形態において
は、感圧センサ毎の変位量を絶対位置データに変換し、
これによって、供試シート10の全体的な形状を測定する
工程を例示したが、供試シートの全体的な形状でなく、
着座面の凹凸形状のみを断面、あるいは立体で得る場合
においては、図2の(110) で、感圧センサ毎の変位量を
相対位置データに変換すればよい。なお、この場合にお
いては、レイアウトマシーン28による供試シート10の外
観形状の測定は省略される。
In the embodiment of the present invention, the displacement of each pressure-sensitive sensor is converted into absolute position data.
Thus, the step of measuring the overall shape of the test sheet 10 is illustrated, but not the overall shape of the test sheet,
When only the uneven shape of the seating surface is obtained in a cross section or in a three-dimensional manner, the displacement amount for each pressure-sensitive sensor may be converted into relative position data in (110) of FIG. In this case, the measurement of the external shape of the test sheet 10 by the layout machine 28 is omitted.

【0032】また、この発明の実施の形態においては、
シートバック16、シートクッション18の双方の着座時形
状を測定、表示させる工程を例示しているが、シートバ
ック、シートクッションの双方に限定されず、いずれか
一方のみを測定し表示してもよい。
In the embodiment of the present invention,
Although the process of measuring and displaying the seated shape of both the seat back 16 and the seat cushion 18 is illustrated, the present invention is not limited to both the seat back and the seat cushion, and only one of them may be measured and displayed. .

【0033】更に、この発明の実施の形態においては、
センサマット12をシートバック用センサマット12-S/Bと
シートクッション用センサマット12-S/Cとに分離してい
るが、これに限定されず、たとえば、シートバック用セ
ンサマットとシートクッション用センサマットとを一体
にした長尺の形態に、センサマットを形成してもよい。
Further, in the embodiment of the present invention,
The sensor mat 12 is separated into a sensor mat 12-S / B for seat back and a sensor mat 12-S / C for seat cushion, but is not limited thereto. The sensor mat may be formed in a long form in which the sensor mat is integrated.

【0034】なお、この発明においては、供試シート10
として自動車用シートを例示しているが、着座によって
形状変化する、弾性体を有するシートであれば足りるた
め、自動車に限定されず、たとえば、電車、飛行機、船
舶や自転車、二輪車等の他の車両用のシートの着座時形
状の測定に、この発明を応用してもよい。また、車両用
シートに限定されず、各種事務用シート、劇場、映画館
等の観劇用シート、および理容、美容用シート、ならび
に家庭用シート等に対しても、この発明の着座時形状測
定方法が応用できる。
In the present invention, the test sheet 10
However, the present invention is not limited to automobiles, and any other vehicle such as a train, an airplane, a ship, a bicycle, a motorcycle, etc. The present invention may be applied to measurement of a seating shape of a seat for use. Further, the seating shape measurement method of the present invention is not limited to vehicle seats, but also for various office seats, theater seats, theater seats, theater seats, theater seats, barber seats, beauty seats, and home seats. Can be applied.

【0035】上述した発明の実施の形態は、この発明を
説明するためのものであり、この発明を何等限定するも
のでなく、この発明の技術範囲内で変形、改造等の施さ
れたものも全てこの発明に包含されることはいうまでも
ない。
The embodiments of the present invention described above are intended to explain the present invention, and do not limit the present invention in any way. Modifications, alterations, and the like made within the technical scope of the present invention are also possible. It goes without saying that all are included in the present invention.

【0036】[0036]

【発明の効果】上記のように、この発明に係るシートの
着座時形状測定方法によれば、シートの体圧分布の圧力
値を、静たわみ特性の測定により得られた感圧センサ毎
での変位量に変換することにより、シートの持つ反力や
窪み等の変則的な形状変化の影響を受けることなく、シ
ートの着座時形状が測定できるため、シートの着座時形
状が容易、かつ正確に測定できる。
As described above, according to the seating shape measuring method of the present invention, the pressure value of the body pressure distribution of the seat is measured for each pressure-sensitive sensor obtained by measuring the static deflection characteristics. By converting to the displacement amount, the seated shape can be measured without being affected by irregular shape changes such as reaction force and dents of the seat, so the seated shape can be easily and accurately measured. Can be measured.

【0037】そして、シートの着座面に配設したセンサ
マットの各感圧センサからの信号のもとで、静たわみ測
定、体圧分布測定の圧力値をそれぞれ検出するため、変
位量の絶対位置データの誤差は十分に抑制される。従っ
て、この点からも、形状測定の正確性が向上する。
In order to detect pressure values for static deflection measurement and body pressure distribution measurement based on signals from the respective pressure-sensitive sensors of the sensor mat disposed on the seating surface of the seat, the absolute position of the displacement amount is determined. Data errors are sufficiently suppressed. Therefore, also from this point, the accuracy of the shape measurement is improved.

【0038】更に、この発明によれば、着座者身体の密
着部分以外の部分の形状も容易に測定、推定できる。従
って、供試シートの着座面の全域にわたる形状測定が容
易に可能となり、着座者身体の密着部分、非密着部分を
問わない、シートの全体的な着座時形状の表現が適切に
行える。
Further, according to the present invention, it is possible to easily measure and estimate the shape of a portion other than the close contact portion of the occupant's body. Therefore, shape measurement over the entire area of the seating surface of the test seat can be easily performed, and the overall seating shape of the seat can be appropriately expressed regardless of whether the seated body is in close contact or non-contact.

【0039】そして、この発明の着座時形状測定方法に
よって得られる感圧センサ毎の変位量のデータ形式によ
れば、コンピュータによる画像処理が容易に可能である
ため、シートの着座時形状の三次元的表現化が得られ
る。
According to the data format of the amount of displacement of each pressure-sensitive sensor obtained by the sitting shape measuring method of the present invention, image processing can be easily performed by a computer. Is obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明に係るシートの着座時形状測定方法を
行う装置の概略ブロック図である。
FIG. 1 is a schematic block diagram of an apparatus for performing a method of measuring a seated shape according to the present invention.

【図2】シートの着座時形状測定方法の概略のフローチ
ャートである。
FIG. 2 is a schematic flowchart of a method of measuring a shape of a seat when the seat is seated.

【図3】シートの着座時形状測定方法における、静たわ
み測定時のシートの概略側面図である。
FIG. 3 is a schematic side view of the seat at the time of measuring static deflection in the method of measuring the shape of the seat when seated.

【図4】シートの着座時形状測定方法における、体圧分
布測定時のシートの概略側面図である。
FIG. 4 is a schematic side view of the seat when measuring the body pressure distribution in the method of measuring the shape of the seat when seated.

【図5】シートの着座時形状測定方法における、シート
の外観形状測定時の概略側面図である。
FIG. 5 is a schematic side view when measuring the external shape of the seat in the method of measuring the shape of the seat when seated.

【符号の説明】[Explanation of symbols]

10 供試シート 12(12-S/B、12-S/C) センサマット 10 Test sheet 12 (12-S / B, 12-S / C) Sensor mat

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 縦方向、横方向の等間隔毎に感圧センサ
の配置されたセンサマットを供試シートの着座面に配設
し、対応する型板による、当該センサマットを介した押
圧によって、型板圧力と押圧ストロークとの関係を示す
供試シートの静たわみ特性を、感圧センサ毎に測定する
とともに、 前記センサマットを介した被試験者の着座のもとでの圧
力の検出によって、当該被試験者の着座時における供試
シートの着座面での体圧分布を、感圧センサ毎の圧力値
として測定し、 前記体圧分布測定による感圧センサ毎の圧力値を、前記
静たわみ特性の測定により得られた感圧センサ毎での変
位量に変換し、この感圧センサ毎の変位量を、供試シー
トの外観形状に対応した絶対位置データにそれぞれ変換
することによって、前記被試験者の着座時における供試
シートの全体的な形状を算出、表示可能としたシートの
着座時形状測定方法。
1. A sensor mat in which pressure-sensitive sensors are arranged at equal intervals in the vertical and horizontal directions is disposed on a seating surface of a test seat, and is pressed by a corresponding template through the sensor mat. The static deflection characteristics of the test sheet indicating the relationship between the template pressure and the pressing stroke are measured for each pressure-sensitive sensor, and by detecting the pressure under the seat of the test subject via the sensor mat, Measuring the body pressure distribution on the seating surface of the test seat when the subject is seated as a pressure value for each pressure-sensitive sensor, and measuring the pressure value for each pressure-sensitive sensor based on the body pressure distribution measurement as the static value. By converting the displacement amount for each pressure-sensitive sensor obtained by measuring the deflection characteristics, and converting the displacement amount for each pressure-sensitive sensor into absolute position data corresponding to the external shape of the test sheet, When the examinee sits down Overall shape calculated, displayable and the seated upon the shape measuring method of the sheet of the test sheet that.
【請求項2】 縦方向、横方向の等間隔毎に感圧センサ
の配置されたセンサマットを供試シートの着座面に配設
し、対応する型板による、当該センサマットを介した押
圧によって、型板圧力と押圧ストロークとの関係を示す
供試シートの静たわみ特性を、感圧センサ毎に測定する
とともに、 前記センサマットを介した被試験者の着座のもとでの圧
力の検出によって、当該被試験者の着座時における供試
シートの着座面での体圧分布を、感圧センサ毎の圧力値
として測定し、 前記体圧分布測定による感圧センサ毎の圧力値を、前記
静たわみ特性の測定により得られた感圧センサ毎での変
位量に変換し、この感圧センサ毎の変位量を、感圧セン
サ間での相対位置データにそれぞれ変換することによっ
て、前記被試験者の着座時における供試シートの、少な
くとも着座面での凹凸形状を算出、表示可能としたシー
トの着座時形状測定方法。
2. A sensor mat on which a pressure-sensitive sensor is arranged at equal intervals in the vertical and horizontal directions is disposed on a seating surface of a test seat, and is pressed by a corresponding template through the sensor mat. The static deflection characteristics of the test sheet indicating the relationship between the template pressure and the pressing stroke are measured for each pressure-sensitive sensor, and by detecting the pressure under the seat of the test subject via the sensor mat, Measuring the body pressure distribution on the seating surface of the test seat when the subject is seated as a pressure value for each pressure-sensitive sensor, and measuring the pressure value for each pressure-sensitive sensor based on the body pressure distribution measurement as the static value. By converting the amount of displacement for each pressure sensor obtained by measuring the deflection characteristics and converting the amount of displacement for each pressure sensor to relative position data between the pressure sensors, Test seat when sitting , Calculated irregularities at least the seating surface, can be displayed and the seated upon the shape measuring method of the sheet.
JP6436198A 1998-02-28 1998-02-28 Method for measuring shape of seat when person is seated in it Pending JPH11248409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6436198A JPH11248409A (en) 1998-02-28 1998-02-28 Method for measuring shape of seat when person is seated in it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6436198A JPH11248409A (en) 1998-02-28 1998-02-28 Method for measuring shape of seat when person is seated in it

Publications (1)

Publication Number Publication Date
JPH11248409A true JPH11248409A (en) 1999-09-17

Family

ID=13256059

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6436198A Pending JPH11248409A (en) 1998-02-28 1998-02-28 Method for measuring shape of seat when person is seated in it

Country Status (1)

Country Link
JP (1) JPH11248409A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6662138B1 (en) * 1999-11-09 2003-12-09 Denso Corporation Seated person determination apparatus for vehicle seats
WO2004020963A1 (en) * 2002-08-28 2004-03-11 Daihatsu Motor Co., Ltd. Vehicle-occupant fatigue-level assessment method, vehicle seat assessment method, and vehicle seat assessment device
US7048338B2 (en) * 2000-03-02 2006-05-23 Siemens Vdo Automotive Corporation Method and apparatus for attaching sensors to a seat assembly
JP2010243240A (en) * 2009-04-02 2010-10-28 Suminoe Textile Co Ltd Body pressure distribution measuring device for solid knitting
JP2020118520A (en) * 2019-01-23 2020-08-06 日本発條株式会社 Seat tester and seat testing method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6662138B1 (en) * 1999-11-09 2003-12-09 Denso Corporation Seated person determination apparatus for vehicle seats
US7048338B2 (en) * 2000-03-02 2006-05-23 Siemens Vdo Automotive Corporation Method and apparatus for attaching sensors to a seat assembly
WO2004020963A1 (en) * 2002-08-28 2004-03-11 Daihatsu Motor Co., Ltd. Vehicle-occupant fatigue-level assessment method, vehicle seat assessment method, and vehicle seat assessment device
US7248996B2 (en) 2002-08-28 2007-07-24 Daihatsu Motor Co., Ltd. Vehicle-occupant fatigue-level assessment method, vehicle seat assessment method, and vehicle seat assessment device
CN100352401C (en) * 2002-08-28 2007-12-05 大发工业株式会社 Vehicle-occupant fatigue-level assessment method, vehicle seat assessment method, and vehicle seat assessment device
JP2010243240A (en) * 2009-04-02 2010-10-28 Suminoe Textile Co Ltd Body pressure distribution measuring device for solid knitting
JP2020118520A (en) * 2019-01-23 2020-08-06 日本発條株式会社 Seat tester and seat testing method

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