WO2004048921A1 - Verfahren und vorrichtung zur ermittlung des von einer person empfundenen sitzkomforts eines sitzpolsters - Google Patents
Verfahren und vorrichtung zur ermittlung des von einer person empfundenen sitzkomforts eines sitzpolsters Download PDFInfo
- Publication number
- WO2004048921A1 WO2004048921A1 PCT/EP2003/011803 EP0311803W WO2004048921A1 WO 2004048921 A1 WO2004048921 A1 WO 2004048921A1 EP 0311803 W EP0311803 W EP 0311803W WO 2004048921 A1 WO2004048921 A1 WO 2004048921A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seat
- measuring
- deformation
- seat surface
- comfort
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/001—Testing of furniture, e.g. seats or mattresses
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
- A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
Definitions
- the invention relates to a method and a device for determining the seating comfort perceived by a person of a seat cushion under load, and in particular the perceived softness of a cushion of a motor vehicle seat.
- a method for determining the pressure comfort of a seat cushion is known from German patent DE 196 01 974 C2, in which a value for the pressure comfort of the seat cushion can be determined via a measuring mat which has a large number of individual pressure sensors.
- a group of pressure sensors corresponding to anthropomorphic areas and a corresponding area-specific evaluation of the measured pressure values at a value reflecting the respective comfort of the seat cushion is used to determine the comfort. Even if this method provides somewhat reproducible values with regard to perceived pressure comfort due to a seat pressure distribution corresponding to the human body when sitting for prolonged periods, the method is completely unsuitable for providing a measurement of reproducible values of sitting comfort when sitting, i.e. in the initial phase of sitting.
- the object of the invention is to provide a method and a device for determining the perceived seating comfort when sitting on a seat cushion, which on the one hand enable an objective, reproducible measurement of the seating comfort and on the other hand can be carried out by a large number of test persons without complex test arrangements and tests ,
- This object is achieved with a method with the steps according to claim 1 and with a device with the steps according to the features of claim 6.
- the method for determining the seating comfort perceived by a person of a seat cushion under load, in particular the perceived softness of a motor vehicle seat, when a given seat surface and contour is subjected to a pressure load and distribution corresponding to the seating of a person is characterized by measuring the pressure distribution over the Seat surface by means of a pressure sensor system; Measuring the actual deformation of the seat surface by means of a displacement / or deformation sensor system; and by calculating a value of seating comfort when sitting from the measured deformation and the measured pressure distribution of the seat cushion.
- a pressure measurement of the seat surface By linking a pressure measurement of the seat surface with a deformation measurement of the seat surface according to the invention, it is possible to calculate a softness or elasticity value which allows an objective and reproducible statement about the softness and thus the seating comfort when the vehicle seat is seated.
- a new type of measurement methodology is available, which can be used just as advantageously with regard to the development of seat cushions and their implementation by means of specifications as for quality assurance in series production.
- the method or the method of determining the comfort of a seat enables an objective and reproducible statement about the actual comfort perception of a user, especially when sitting.
- the measured pressure values are used as spring force, the measured deformation of the seat surface as spring travel, so that the softness can be calculated from the formula in the form of a matrix elasticity value analogous to the elastic constant D.
- a simple matrix calculation enables a three-dimensional softness value to be determined using the method according to the invention.
- the calculation of a softness matrix value D for assessing the seating comfort when sitting is carried out from a measured pressure distribution matrix P and a measured deformation matrix X in relation to the actual seat surface.
- the pressure distribution and the deformation of the seat surface are preferably determined here by an equal number of measuring points, for example over approximately 1,000 measuring points, the distribution and arrangement of the respective sensors being essentially corresponding.
- the calculated seat comfort value is shown in a three-dimensional representation as a multi-dimensional elasticity matrix.
- the multidimensional representation can take place, for example, by three coordinates in space, the X and Y coordinates representing the seat surface and the Z coordinate, for example, elasticity values in the unit N / cm 2 .
- the three-dimensional representation can alternatively by colored fields, which are entered as a third dimension in a two-dimensional grid of the seat contour.
- a first measuring mat is used with a multiplicity of measuring sensors the size of the seat surface for measuring the pressure distribution, and then a second measuring mat is used for measuring the seat surface deformation, the first and the second measuring mat being essentially the same number of measuring points and positioned accordingly.
- the calculation of the seat comfort value with essentially the same number of measuring points is relatively simple and can be carried out by any suitable means with which matrix calculations are possible.
- the deformation of the seat contour is measured by forming a difference between a three-dimensional image of the seat surface in the non-seated case and a three-dimensional image of the seat surface in the seated case.
- the device according to the invention with the features of claim 6 has means for loading a seat surface with a pressure load and distribution corresponding to the seating of a person and is characterized in that a pressure sensor system is provided for measuring a pressure distribution on the seat surface, a deformation sensor system for Measuring the actual deformation of the seat surface and an evaluation unit for calculating a value of the seat comfort from the measured pressure distribution and the measured deformation of the seat surface.
- the device is therefore extremely compact and can be simply placed on a given vehicle seat and attached to closing sitting can be operated by a test person or by an additional test device.
- the pressure sensor system is first simply placed on the respective seat and then the deformation sensor system.
- the evaluation unit is adapted to save the measured values and to process them on site or later for evaluation.
- the device according to the invention is provided with a pressure sensor system in the form of a first measuring mat, which can be fastened on the seat surface, and the deformation sensor system is provided in the form of a second measuring mat, which can be fastened on the seat surface, and which, after being seated, the deformation can maintain.
- the provision of the respective sensor system in the form of flat mats essentially in the size of the seat surface has the advantage that the sitting can be measured with actual test persons or with a single person in order to calculate an objectified seat comfort value.
- the sensor mats simply have to be placed on a given seat and actuated one after the other by means of a test person or a special device which simulates the sitting of a person.
- the evaluation unit has a calculation means for performing matrix calculations.
- the multi-dimensional result matrices of the pressure measurement and the deformation measurement can be processed further by matrix multiplication and division.
- a three-dimensional result matrix can thus also be determined, which can be calculated analogously to an elastic modulus matrix from the elastic constant from Hook's law. Further details on the method of calculation using matrices will be described below in the exemplary embodiment of the present invention.
- an output and display unit is provided, by means of which three-dimensional measurement and result matrices can be represented.
- a user of the device or the development engineer can assess the actual comfort when sitting by simply comparing the respective seat comfort values in the form of matrices. In this way, undesirable developments are avoided, and a reproducible, objective assessment of the softness or comfort of the seat can be carried out without a large number of attempts.
- FIGS. 1 a to 1 c show the determination of the pressure distribution of an exemplary embodiment according to the invention, which together with the seat contour measurement according to FIGS. 1 a to 1 c serve to calculate a value of the softness of the seat.
- FIG. 1 a shows a seat contour in the form of a three-dimensional representation, in the non-seated case, that is to say without a person taking a seat on the seat or using a special device for simulating a seated person on the seat.
- the three-dimensional representation of the seat contour is made after evaluation of a measurement by a (not shown) measuring mat, as described for example in the German patent DE 196 01 972 C2.
- a plurality of measuring points are determined by means of a flat measuring mat, which can be fixed and stiffened in any desired deformation state after it has been placed on by applying a vacuum.
- any other type of measurement of the deformation of the seat surface or the seat contour can be used.
- FIG. 1b shows the same vehicle seat as in FIG.
- FIG. 1a the seat contour being shown here in the deformed, that is to say in the seated, state.
- the measurement is carried out in the same way as before.
- the actual cushion cushion deformation is shown in FIG. 1 c, by forming the difference between the data matrices, which result from the values in FIGS. 1 a and 1 b. For example, around 1,000 individual measuring points are used, which are evenly distributed over the seat surfaces to be measured. From the differential contour of a deformation of the surface, that is to say the actual cushion deformation, the inventive calculation or determination of the perceived seating comfort when sitting in this exemplary embodiment is calculated using data from a seat pressure distribution, as described below.
- FIG. 2 shows an example of the result of a pressure measurement as can be used in one step in accordance with the method according to the invention.
- a measuring mat with a pressure sensor system
- a multiplicity of pressure measuring points preferably the same number as in the previous contour measurement, that is to say approximately 1,000 measuring points, are measured when a test person sits on a given cushion of a vehicle seat.
- the measurement points of the pressure distribution result in a pressure distribution pattern, similar to that shown in FIG. 2.
- a measuring mat as described in German patent DE 196 01 974 C2 can be used to measure the pressure distribution.
- Other methods of printing measurement can also be used to determine a seat comfort value according to the invention.
- P is the pressure distribution matrix
- A the active pressure sensor surface
- X the deformation matrix
- D the softness matrix.
- the data matrices are evaluated by matrix multiplication and division by inserting into the above formula to determine the softness matrix D.
- the result is a matrix value D, which can be represented as a three-dimensional elastic constant with the unit N / m 2 .
- This seat softness or comfort matrix D can be represented similarly to the pressure distribution shown in FIG. 2, for example by colored areas of different degrees of softness.
- the method according to the invention can thus be used to make a reproducible and objectified statement about the perceived softness of a seat cushion when sitting in a very simple manner.
- a seat softness matrix pattern D By specifying a seat softness matrix pattern D, specifications can be created that can be used for the production and trolls of the quality of seats can be used.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03775227A EP1565721A1 (de) | 2002-11-28 | 2003-10-24 | Verfahren und vorrichtung zur ermittlung des von einer person empfundenen sitzkomforts eines sitzpolsters |
US10/536,784 US20060150756A1 (en) | 2002-11-28 | 2003-10-24 | Method and device for determining the sitting comfort a seat cushion, which is perceived by a person |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10255445A DE10255445A1 (de) | 2002-11-28 | 2002-11-28 | Verfahren und Vorrichtung zur Ermittlung des von einer Person empfundenen Sitzkomforts eines Sitzpolsters |
DE10255445.5 | 2002-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004048921A1 true WO2004048921A1 (de) | 2004-06-10 |
Family
ID=32335804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/011803 WO2004048921A1 (de) | 2002-11-28 | 2003-10-24 | Verfahren und vorrichtung zur ermittlung des von einer person empfundenen sitzkomforts eines sitzpolsters |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060150756A1 (de) |
EP (1) | EP1565721A1 (de) |
DE (1) | DE10255445A1 (de) |
WO (1) | WO2004048921A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007014634A1 (de) * | 2005-08-04 | 2007-02-08 | Daimlerchrysler Ag | Verfahren und vorrichtung zur komfortbewertung eines sitzes |
CN103458738A (zh) * | 2011-03-31 | 2013-12-18 | Be航天股份有限公司 | 优化座椅元件的几何结构的方法 |
CN111855250A (zh) * | 2020-07-30 | 2020-10-30 | 程意斐 | 一种竹躺椅座面舒适度的评价方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006017726B4 (de) * | 2006-04-11 | 2009-10-29 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Verfahren und Vorrichtung zur Komfortbewertung von Sitz-, Liege- und Stützpolstern, insbesondere für Fahrzeugsitze |
US20080015719A1 (en) * | 2006-07-14 | 2008-01-17 | Scott Ziolek | Computer-assisted assessment of seat design |
DE102009016051A1 (de) * | 2009-04-02 | 2010-10-07 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Erzeugung einer Tragschale für einen Sitz |
DE102010005983A1 (de) * | 2010-01-28 | 2011-08-18 | Audi Ag, 85057 | Verfahren und Vorrichtung zum Ermitteln einer Eigenschaft eines Sitzes |
US8801102B2 (en) | 2010-07-30 | 2014-08-12 | Herman Miller, Inc. | Test device for seating structure |
CN105101844B (zh) * | 2013-04-02 | 2019-05-31 | B/E航空公司 | 确定优化座椅表面轮廓的方法和具有优化的座椅表面轮廓的座椅 |
CN103364215B (zh) * | 2013-07-19 | 2015-11-04 | 上海理工大学 | 座椅舒适性客观参数检测与处理方法 |
JP6679394B2 (ja) * | 2016-04-13 | 2020-04-15 | 日置電機株式会社 | 測定結果報知装置、測定システムおよび測定結果報知方法 |
CN107449612B (zh) | 2016-05-30 | 2022-03-11 | 宝马股份公司 | 确定座椅的座椅单元的至少一个负荷特性的方法和系统 |
CN115399597B (zh) * | 2022-09-09 | 2023-07-14 | 永艺家具股份有限公司 | 一种智能座椅的自适应坐姿识别方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19601974A1 (de) * | 1996-01-20 | 1997-07-24 | Daimler Benz Ag | Verfahren zur quantitativen Ermittlung des Druckkomforts eines Sitzpolsters |
DE19601972A1 (de) * | 1996-01-20 | 1997-07-24 | Daimler Benz Ag | Verfahren und Einrichtung zur Erfassung der Oberflächenkontur bei einem elastischen ,unter Belastung verformbaren Sitzpolster |
FR2788595A1 (fr) * | 1999-01-15 | 2000-07-21 | Soprolia | Appareil de mesure et installation pour etablir un comparatif entre differents types de confort concernant des familles de produits de literies ou de sieges, en tenant compte du poids et de la morphologie de l'utilisateur |
Family Cites Families (11)
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US4526043A (en) * | 1983-05-23 | 1985-07-02 | At&T Bell Laboratories | Conformable tactile sensor |
US5400662A (en) * | 1992-04-17 | 1995-03-28 | Enix Corporation | Matrix type surface pressure distribution detecting element |
US6098000A (en) * | 1994-06-24 | 2000-08-01 | Mccord Winn Textron Inc. | Interactive, individually controlled, multiple bladder seating comfort adjustment system and method |
US5930152A (en) * | 1995-02-21 | 1999-07-27 | Semap S.A.R.L. | Apparatus for positioning a human body |
DE19601971C2 (de) * | 1996-01-20 | 1997-11-20 | Daimler Benz Ag | Sitzprüfstempel |
US5991676A (en) * | 1996-11-22 | 1999-11-23 | Breed Automotive Technology, Inc. | Seat occupant sensing system |
DE10144877A1 (de) * | 2001-09-12 | 2003-04-03 | Bosch Gmbh Robert | Sensor zur Sitzbelegungserkennung |
DE10148662B4 (de) * | 2001-10-02 | 2006-05-24 | Daimlerchrysler Ag | Verfahren zur quantitativen Ermittlung des dynamischen Sitzkomforts eines Sitzpolsters |
US7026946B2 (en) * | 2002-04-17 | 2006-04-11 | Darrel Saunders | Method and apparatus for sensing seat occupancy |
EP1475274B1 (de) * | 2003-05-06 | 2011-08-31 | Mitsubishi Electric Information Technology Centre Europe B.V. | System und Verfahren zum Überwachen einer Sitzbelegung |
KR100716376B1 (ko) * | 2005-10-17 | 2007-05-11 | 현대자동차주식회사 | 인공신경망을 이용한 자동차 시트표피재의 촉감 평가 방법및 시스템 |
-
2002
- 2002-11-28 DE DE10255445A patent/DE10255445A1/de not_active Withdrawn
-
2003
- 2003-10-24 WO PCT/EP2003/011803 patent/WO2004048921A1/de not_active Application Discontinuation
- 2003-10-24 EP EP03775227A patent/EP1565721A1/de not_active Withdrawn
- 2003-10-24 US US10/536,784 patent/US20060150756A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19601974A1 (de) * | 1996-01-20 | 1997-07-24 | Daimler Benz Ag | Verfahren zur quantitativen Ermittlung des Druckkomforts eines Sitzpolsters |
DE19601972A1 (de) * | 1996-01-20 | 1997-07-24 | Daimler Benz Ag | Verfahren und Einrichtung zur Erfassung der Oberflächenkontur bei einem elastischen ,unter Belastung verformbaren Sitzpolster |
FR2788595A1 (fr) * | 1999-01-15 | 2000-07-21 | Soprolia | Appareil de mesure et installation pour etablir un comparatif entre differents types de confort concernant des familles de produits de literies ou de sieges, en tenant compte du poids et de la morphologie de l'utilisateur |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007014634A1 (de) * | 2005-08-04 | 2007-02-08 | Daimlerchrysler Ag | Verfahren und vorrichtung zur komfortbewertung eines sitzes |
CN103458738A (zh) * | 2011-03-31 | 2013-12-18 | Be航天股份有限公司 | 优化座椅元件的几何结构的方法 |
CN103458738B (zh) * | 2011-03-31 | 2015-09-30 | Be航天股份有限公司 | 优化座椅元件的几何结构的方法 |
CN111855250A (zh) * | 2020-07-30 | 2020-10-30 | 程意斐 | 一种竹躺椅座面舒适度的评价方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1565721A1 (de) | 2005-08-24 |
US20060150756A1 (en) | 2006-07-13 |
DE10255445A1 (de) | 2004-06-24 |
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