WO2008107279A1 - Capteur à surface tactile - Google Patents
Capteur à surface tactile Download PDFInfo
- Publication number
- WO2008107279A1 WO2008107279A1 PCT/EP2008/051812 EP2008051812W WO2008107279A1 WO 2008107279 A1 WO2008107279 A1 WO 2008107279A1 EP 2008051812 W EP2008051812 W EP 2008051812W WO 2008107279 A1 WO2008107279 A1 WO 2008107279A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- touch
- active
- sensor
- control
- band
- Prior art date
Links
- 230000005484 gravity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/033—Indexing scheme relating to G06F3/033
- G06F2203/0339—Touch strips, e.g. orthogonal touch strips to control cursor movement or scrolling; single touch strip to adjust parameter or to implement a row of soft keys
Definitions
- the present invention relates to a touch-sensitive sensor using pressure-sensitive resistors (also known as the FSR sensor for "Force Sensing Resistor”).
- the invention also applies to an electrical control device by FSR touch surface, in particular for motor vehicle control devices such as a motorized mechanism for opening and / or closing at least one opening or an organ electronics for a multimedia display or an air conditioning system.
- Such sensors are for example known under the name “digitizing tablet” (English name “Digitizer pad”) and are cited as prior art the following documents: US 4,810,992, US 5,008,497, FR 2683649 or EP 0 541 102.
- These sensors comprise semiconductor layers sandwiched between, for example, a conductive layer and a resistive layer.
- a pressure By exerting a pressure on the FSR layer, its ohmic resistance decreases, thus making it possible, by application of a suitable voltage, to measure the applied pressure and / or the location of the place where the pressure is exerted.
- the coordinates delivered by the sensor are used to perform the control of a specific electrical function associated with the area touched by the hand of a user.
- FIG. 1 of the state of the art shows such a sensor, comprising a tactile surface 36 using pressure-sensitive resistors for the detection of a circular movement (arrow 38) of a control finger 40.
- the coordinates of the control finger 40 are obtained by determining the barycentre of the bearing points of the bearing zone of the finger 40.
- the disadvantage of this arrangement of the sensor is an error of interpretation of location of the finger 40 occurring when the finger 40 is positioned at the seam 42 of the two ends of the loop formed by the sensor.
- a position of the finger 40 on the gap 42 is interpreted by the sensor as a position located at the center of the two ends of the sensor, a position diametrically opposed to the actual position of the finger 40, shown schematically by the cross 44.
- the object of the present invention is therefore to provide a touch-type sensor of the FSR type for detecting a movement in closed track of the finger which does not have the disadvantages of surface sensors of the prior art.
- the subject of the invention is a touch-sensitive sensor comprising a touch-sensitive surface using pressure-sensitive resistors in a control zone forming at least one closed path, characterized in that the tactile surface comprises a first active band capable of supplying a first signal to a processing unit corresponding to a bearing zone of a control finger applied to said first band, and at least a second active band capable of supplying a second signal to the first band; processing unit corresponding to a bearing area of a control finger applied to said second band, said active strips being arranged so as to locate a support throughout the control area.
- each active band has an annular shape opened by a gap, the active strips being superimposed so that the interstices are angularly offset from one another in the control zone, two active bands facing each have a support layer in common carrying on each side a track associated with each active band, the active strips assemble in series,
- the control zone has a polygonal shape
- - the control zone has a shape circular
- at least one active band has an arcuate shape
- the active bands are substantially identical
- the control zone forms at least two closed paths and the active bands have substantially symmetrical shapes
- - the control zone comprises two bands, the interstices between active strips have a width substantially less than the width of a bearing zone of a control finger, at least two ends of active strips are placed end to end so that they are substantially parallel to each other and oblique with respect to a direction evolving from the center of the closed path, at least two ends of a same active band are substantially parallel to each other, at least two ends of active strips placed end to end have a chev
- FIG. 1 is a diagram of the sensor of the state of the art commented on above.
- FIG. 2 is a disassembled schematic view of a sensor according to a first embodiment of the invention.
- FIG. 3a is a schematic view of a second embodiment of the sensor according to the invention.
- FIG. 3b is a view similar to FIG. 3a in perspective
- FIGS. 4a, 4b, 5a, 5b, 6a and 6b are schematic views from above and in perspective of variants of the second embodiment of the sensor according to FIG.
- FIG. 7 is a schematic view of a third embodiment of the sensor according to the invention
- FIG. 8 is a diagram of an alternative embodiment.
- the identical elements bear the same reference numbers.
- FIG. 2 illustrates a touch-sensitive surface sensor 1 according to the invention, using pressure sensitive resistors (also known as FSR sensor for "Force Sensing Resistor”).
- This sensor 1 is in particular intended to be integrated in an electric control device by FSR-type tactile surface, in particular for motor vehicle control devices such as a motorized opening and / or closing mechanism of at least one opening or an electronic device for a multimedia screen or an air conditioning system or any other motor vehicle electrical control such as an electric seat control or light controls such as a ceiling lamp or mood light.
- the touch-sensitive surface sensor 1 comprises a touch-sensitive surface using pressure-sensitive resistors in a control zone 2 forming at least one closed path.
- the touch surface comprises a first active band 3 capable of supplying a first signal 6a to a processing unit 8 corresponding to a support zone of a control finger applied to the first band 3, and at least a second active band 5 capable of supplying a second signal 6b to the processing unit 8 corresponding to a bearing zone of a control finger applied to the second band 5.
- a bearing zone corresponds to a pressure applied by a control finger in the control zone 2 modifying the ohmic resistance of the active band 3, 5.
- the processing unit 8 measures the signal corresponding to the applied pressure and / or the location of the place where the pressure is exerted on each active band 3, 5 and determines the location of the the support zone by the barycentre of the signals supplied for each active band 3, 5.
- the processing unit 8 determines the correct position of the bearing zone in the control zone 2 by checking the coherence of the two measurement signals.
- the active strips 3, 5 are said to be “slippery”, that is to say that not only is the bearing area of a finger of the user, but also his movement, in particular the direction of movement. moving a finger of the user for a command in "automatic" mode.
- the active strips 3, 5 are arranged in such a way as to be able to locate a support throughout the control zone 2. This characteristic can be obtained with a control zone 2 comprising two active bands 3, 5.
- each active band 3, 5 has an annular shape opened by a gap 10a, 10b, the active strips 3, 5 being superimposed so that the interstices 10a, 10b are angularly offset. from each other in control zone 2.
- the active strips 3, 5 are offset by an angle ⁇ , such that the gaps 10a, 10b of the superimposed active strips 3, 5 do not overlap, so that a support zone can not overlap two interstices 10a simultaneously. 10b and simultaneously provide two signals that would be misinterpreted by the processing unit 8.
- the tracks can be in graphite and obtained by screen printing.
- the layers of each active band 3, 5 can be kept separated from each other by a spacer 13a, 13b formed by two concentric rings.
- each active band 3, 5 For each position of the control finger in the control zone 2, each active band 3, 5 provides a signal 6a, 6b to the processing unit 8 to deduce a correct location of the command.
- control finger when the control finger is positioned in the control zone 2 at the location shown diagrammatically in FIG. 2 by the cross 15, the finger bears on both the upper active band 3 and the lower active band 5.
- Each active band 3, 5 provides a signal 6a, 6b to the processing unit 8.
- This unit 8 determines a support position from each signal 6a, 6b received. If the positions obtained by the two signals 6a, 6b coincide, the support position is validated and can be used subsequently by a command as described above.
- the processing unit 8 which has memorized the center of gravity position obtained when pressing on the two ends, can reject this measurement by checking the coherence with the another measurement signal 6a, 6b whose position will be validated.
- control finger is positioned at the location shown by the cross 17.
- the finger is positioned in the gap 10a, pressing two ends 3a, 3b of the upper active band 3 and on the lower active band 5.
- the processing unit 8 is programmed to recognize this case and determine what is the correct interpretation of the location of the finger of the user.
- This embodiment has the advantage of completely covering the control zone 2 so that it does not include a dead zone.
- this embodiment does not cause any feeling for the user when passing the finger on the interstices 10a, 10b.
- the active strips 3, 5 assemble in series in at least one closed control pattern for locating a support in the control zone 2.
- control zone 2 may have a polygonal, circular or any shape.
- the active strips 3, 5 then have complementary shapes adapted to assemble and cover the entire control zone 2. It is considered that the control zone 2 is covered even if it comprises at least two gaps 10a, 10b between the active bands 3, 5 successive.
- Figures 3a, 3b, 4a, 4b, 5a, 5b show embodiments for which the control zone 2 has a circular shape.
- at least one active band 3, 5 advantageously has a shape of an arc of a circle.
- each active band 3, 5 provides a signal 6a, 6b to the processing unit 8 which deduces the location of the support zone.
- the control finger bears on the active band 5 and does not press on the active band 3.
- the active band 5 sends back a signal 6b corresponding to the zone of support of the finger and the active band 3 does not provide a signal or a signal 6a corresponding to the absence of support.
- the processing unit 8 then has no trouble determining the correct position of the control finger.
- control finger is positioned at the position shown diagrammatically by the cross 17 of FIG. 3a, in the gap 10a, and simultaneously bears on two ends 3a, 5a of the active strips 3 and 5.
- the active band 3 sends a signal 6a corresponding to the support zone on the end 3a and the active band 5 sends a signal 6b corresponding to the support zone on the end 5a, which allows the unit to processing 8 to determine the correct position of the control finger.
- This second embodiment has the advantage of being inexpensive and easy to produce.
- the active bands 3, 5 are substantially identical, as shown in Figures 2, 3b and 5b.
- Figures 6a and 6b show two other embodiments for which the active strips 3, 5 are assembled in series in a control zone 2 forming a closed path of any shape.
- control zone 2 of the touch sensor 1 forms at least two, preferably exactly two closed paths, the active bands 3, 5 having substantially symmetrical shapes.
- FIG. 7 illustrates this third embodiment for a control zone
- the control zone 2 comprises two active bands 3, 5. Each active band
- 3 has three ends 3a, 3c, 3d to assemble with the three ends 5a, 5c, 5d of the other active band 5 forming three interstices 10a, 10b and 10c.
- the gaps 10a, 10b, 10c between active strips 3, 5 have a width substantially smaller than the width of a bearing zone of a control finger, which makes it possible to limit the creation of dead zones.
- the invention provides in the variant embodiment illustrated in FIGS. 4a, 4b, 5a, 5b and 6a that at least two ends 3a, 3c, 5a, 5c of active strips 3, 5 are placed end to end so that they are substantially parallel to each other and oblique with respect to a direction 19 moving from the center of the closed path.
- At least two ends 3a, 3c, 5a, 5c of the same active band 3, 5, are substantially parallel to each other.
- At least two ends 3a, 5a of active bands 3, 5 placed end to end have a chevron shape.
- Such a sensor 1 whose touch surface comprises a first active band 3 and at least a second active band 5, capable of supplying a signal 6a, 6b to a processing unit 8 corresponding to a bearing area of a control finger applied on the active strip 3, 5 concerned, the active strips 3, 5 being arranged so as to locate a support throughout the control zone 2, makes it easy to determine the center of gravity of the bearing points of a zone of pressing the control finger located in a gap 10a, 10b, 10c, from the center of gravity read by each active band 3, 5, of the sensor 1, which eliminates misinterpretations of control.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Adjustable Resistors (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08709004A EP2122444A1 (fr) | 2007-03-02 | 2008-02-14 | Capteur à surface tactile |
US12/528,460 US20110007022A1 (en) | 2007-03-02 | 2008-02-14 | Touch surface sensor |
JP2009551163A JP5623750B2 (ja) | 2007-03-02 | 2008-02-14 | 接触表面センサ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR0701563 | 2007-03-02 | ||
FR0701563A FR2913272B1 (fr) | 2007-03-02 | 2007-03-02 | Capteur a surface tactile |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008107279A1 true WO2008107279A1 (fr) | 2008-09-12 |
Family
ID=38511413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/051812 WO2008107279A1 (fr) | 2007-03-02 | 2008-02-14 | Capteur à surface tactile |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110007022A1 (fr) |
EP (1) | EP2122444A1 (fr) |
JP (1) | JP5623750B2 (fr) |
FR (1) | FR2913272B1 (fr) |
WO (1) | WO2008107279A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2913271B1 (fr) * | 2007-03-02 | 2009-10-02 | Dav Sa | Dispositif de commande electrique pour vehicule automobile |
US8098141B2 (en) * | 2009-02-27 | 2012-01-17 | Nokia Corporation | Touch sensitive wearable band apparatus and method |
JP5423297B2 (ja) * | 2009-09-30 | 2014-02-19 | 富士通株式会社 | 入力装置、入力処理プログラム、および入力制御方法 |
CN102298420B (zh) * | 2011-09-15 | 2013-03-20 | 鸿富锦精密工业(深圳)有限公司 | 具触摸输入功能的电子装置 |
KR101876128B1 (ko) * | 2017-05-08 | 2018-07-13 | 주식회사 티비알 | 벡터 포인팅 디바이스 및 그의 벡터 포인팅 검출 방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2639708A1 (fr) * | 1988-11-29 | 1990-06-01 | Peugeot | Capteur rotatif potentiometrique perfectionne |
EP1035551A2 (fr) * | 1999-03-11 | 2000-09-13 | Matsushita Electric Industrial Co., Ltd. | Résistance variable par rotation et système de contrôle l'utilisant |
US20060028454A1 (en) * | 2004-08-04 | 2006-02-09 | Interlink Electronics, Inc. | Multifunctional scroll sensor |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5852268B2 (ja) * | 1981-09-30 | 1983-11-21 | 日本電気ホームエレクトロニクス株式会社 | 手書き入力装置 |
US4810992A (en) * | 1986-01-17 | 1989-03-07 | Interlink Electronics, Inc. | Digitizer pad |
US5008497A (en) * | 1990-03-22 | 1991-04-16 | Asher David J | Touch controller |
US7466307B2 (en) * | 2002-04-11 | 2008-12-16 | Synaptics Incorporated | Closed-loop sensor on a solid-state object position detector |
DE212004000044U1 (de) * | 2003-08-21 | 2006-06-01 | Philipp, Harald, Hamble | Kapazitiver Positionssensor |
US7495659B2 (en) * | 2003-11-25 | 2009-02-24 | Apple Inc. | Touch pad for handheld device |
US7398688B2 (en) * | 2003-12-11 | 2008-07-15 | Proteus Biomedical, Inc. | Pressure sensor circuits |
US7310089B2 (en) * | 2004-05-18 | 2007-12-18 | Interlink Electronics, Inc. | Annular potentiometric touch sensor |
US8049731B2 (en) * | 2005-07-29 | 2011-11-01 | Interlink Electronics, Inc. | System and method for implementing a control function via a sensor having a touch sensitive control input surface |
US20070291016A1 (en) * | 2006-06-20 | 2007-12-20 | Harald Philipp | Capacitive Position Sensor |
US20080143681A1 (en) * | 2006-12-18 | 2008-06-19 | Xiaoping Jiang | Circular slider with center button |
GB2451267A (en) * | 2007-07-26 | 2009-01-28 | Harald Philipp | Capacitive position sensor |
-
2007
- 2007-03-02 FR FR0701563A patent/FR2913272B1/fr active Active
-
2008
- 2008-02-14 EP EP08709004A patent/EP2122444A1/fr not_active Ceased
- 2008-02-14 US US12/528,460 patent/US20110007022A1/en not_active Abandoned
- 2008-02-14 WO PCT/EP2008/051812 patent/WO2008107279A1/fr active Application Filing
- 2008-02-14 JP JP2009551163A patent/JP5623750B2/ja not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2639708A1 (fr) * | 1988-11-29 | 1990-06-01 | Peugeot | Capteur rotatif potentiometrique perfectionne |
EP1035551A2 (fr) * | 1999-03-11 | 2000-09-13 | Matsushita Electric Industrial Co., Ltd. | Résistance variable par rotation et système de contrôle l'utilisant |
US20060028454A1 (en) * | 2004-08-04 | 2006-02-09 | Interlink Electronics, Inc. | Multifunctional scroll sensor |
Also Published As
Publication number | Publication date |
---|---|
US20110007022A1 (en) | 2011-01-13 |
JP5623750B2 (ja) | 2014-11-12 |
FR2913272B1 (fr) | 2010-06-25 |
EP2122444A1 (fr) | 2009-11-25 |
FR2913272A1 (fr) | 2008-09-05 |
JP2010520613A (ja) | 2010-06-10 |
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