EP3369180A1 - Operating element, particularly in motor vehicles - Google Patents
Operating element, particularly in motor vehiclesInfo
- Publication number
- EP3369180A1 EP3369180A1 EP16798419.4A EP16798419A EP3369180A1 EP 3369180 A1 EP3369180 A1 EP 3369180A1 EP 16798419 A EP16798419 A EP 16798419A EP 3369180 A1 EP3369180 A1 EP 3369180A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- operating element
- sensors
- piezoresistive
- element according
- layer
- 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.)
- Withdrawn
Links
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 238000011156 evaluation Methods 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000006260 foam Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000010985 leather Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/964—Piezoelectric touch switches
- H03K17/9643—Piezoelectric touch switches using a plurality of detectors, e.g. keyboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
- B62D1/046—Adaptations on rotatable parts of the steering wheel for accommodation of switches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
- B62D1/06—Rims, e.g. with heating means; Rim covers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/18—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/205—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using distributed sensing elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/9625—Touch switches using a force resistance transducer
Definitions
- the invention relates to an operating element, in particular in motor vehicles, on the surface of which pressure-sensitive piezoresistive sensors for switching and controlling vehicle-internal sequences and applications are applied.
- motor vehicle has to be interpreted broadly, and may include four- and two-wheeled land vehicles as well as water or air vehicles.
- each manually operable control, switching or control element is meant, such as a steering wheel, a handlebar, a joystick, etc.
- a steering wheel such as a steering wheel, a handlebar, a joystick, etc.
- the invention will be described below but using the example of a steering wheel in a car.
- a steering wheel with feeler elements is known, wherein the feeler elements are piezoresistive sensors which are arranged at defined locations on the circumference of the steering wheel rim or the steering wheel spokes.
- WO 2014/0852778 discloses an optical system with infrared sensors. Infrared sensors are arranged uniformly distributed around the steering wheel, but they have the disadvantage that there must always be an optical connection to the measurement object. In the case of a steering wheel, this means that the sensor surface must not be damaged. In addition, such a solution is very expensive.
- the invention is therefore the object of an operating element in such a way that with the help of cost-effective piezoresistive sensors in addition to the gripping and touching detection and gesture recognition is possible.
- the invention solves this problem according to the characterizing part of patent claim 1, characterized in that a plurality of piezoresistive sensors is arranged in a matrix in rows and columns close together on a substrate layer, wherein the substrate surrounds the entire control area and the individual sensors via conductor tracks are connected to an evaluation unit which processes the individual sensor signals.
- the piezoresistive sensors are combined in subregions to form an application-specific group.
- a sensor group on the left side of the steering wheel for the audio system and another group on the right side of the steering wheel for a navigation system may be responsible.
- the substrate layer carrying the piezoresistive sensors is arranged between a first foam layer arranged on the operating element and an optional second foam layer, which is covered by a protective cover.
- the protective cover can be made of leather or plastic.
- the piezoresistive sensors are arranged on a flexible substrate (for example a foil or a fabric).
- a flexible substrate for example a foil or a fabric.
- each sensor consists of a piezoresistive layer, which is fastened above the substrate by means of spacers, wherein the contacts for the conductor tracks are arranged either on the substrate or on the piezoresistive layer. Sensors constructed in this way are, as stated above, arranged close to each other in a matrix.
- the individual sensors can be arranged in mutually parallel columns and rows. But it is also possible that adjacent rows / columns consists of mutually offset sensors.
- control element to an element for controlling the direction of travel, so for example, a steering wheel, in which at least the turntable is completely surrounded with the piezoresistive sensor film.
- Claim 8 proposes that the evaluation unit is integrated in the control itself.
- the sensors are designed and interconnected in such a way that the evaluation unit differs with appropriate contact between gripping and gesture recognition.
- the embodiment of the invention combines all known from the prior art possibilities with a simple and inexpensive construction and high spatial resolution.
- Fig. 1 a equipped with a sensor matrix
- Fig. 2 is a cross-section A-A of the turntable according to Fig. 1;
- Fig. 3 is a sensor mat according to the invention with
- the steering wheel of a motor vehicle is shown schematically and generally provided with the reference numeral 1.
- the steering rim 2 has a first foam layer 4 arranged around the skeleton 3 of the steering rim 2.
- a film is arranged with piezoresistive sensors arranged close to each other, and provided with the reference numeral 5.
- the sensor layer 5 is covered with a second foam layer 6 and this in turn covered with a leather covering 7.
- a plurality of piezoresistive sensors 8 on the Circumference of the steering wheel 2 arranged.
- the individual sensors 8 are connected via printed conductors, not shown, to an evaluation unit 9.
- This evaluation unit 9 is integrated in, for example, a steering wheel spoke 10.
- FIG. 3 shows schematically how the regularly arranged sensors 8 are arranged on a substrate 11. Schematically illustrated is the electrical connection 12 with the evaluation unit. 9 On a substrate 1 1, which may be a flexible film, spacers 13 are applied, which carry a piezoelectric layer 14, wherein the contacts 15 for the electrical connections 12 either at the piezoelectric layer 14 or the substrate layer 1 1 can be arranged. Between the piezoelectric layer 14 and the substrate layer 1 1 thus remains a gap into which the piezoelectric layer 14 can be pressed in contact, whereby a signal is generated, which is transmitted via the electrical connections 12 to the evaluation unit 9.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Push-Button Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015118531.8A DE102015118531A1 (en) | 2015-10-29 | 2015-10-29 | Operating element, in particular in motor vehicles |
PCT/EP2016/075951 WO2017072242A1 (en) | 2015-10-29 | 2016-10-27 | Operating element, particularly in motor vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3369180A1 true EP3369180A1 (en) | 2018-09-05 |
Family
ID=57354329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16798419.4A Withdrawn EP3369180A1 (en) | 2015-10-29 | 2016-10-27 | Operating element, particularly in motor vehicles |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3369180A1 (en) |
CN (1) | CN108292921A (en) |
DE (1) | DE102015118531A1 (en) |
WO (1) | WO2017072242A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017216674A1 (en) | 2017-09-20 | 2019-03-21 | Bayerische Motoren Werke Aktiengesellschaft | Device and method for driving vehicle functions |
DE102017216675A1 (en) | 2017-09-20 | 2019-03-21 | Bayerische Motoren Werke Aktiengesellschaft | Device and method for driving vehicle functions |
DE102018202786A1 (en) | 2018-02-23 | 2019-08-29 | Bayerische Motoren Werke Aktiengesellschaft | Device and method for operating an automated mobile vehicle with a driver's operable steering handle |
DE102018202780A1 (en) * | 2018-02-23 | 2019-08-29 | Bayerische Motoren Werke Aktiengesellschaft | Device and method for operating an at least partially automated mobile vehicle |
DE102018006914B4 (en) | 2018-08-30 | 2022-08-04 | CurveSYS GmbH | Areal force sensor unit |
DE202019106523U1 (en) | 2019-11-22 | 2019-12-17 | MöllerTech Engineering GmbH | Interior component, interior trim component and arrangement for a vehicle |
DE102020111405A1 (en) * | 2020-04-27 | 2021-10-28 | Tdk Electronics Ag | Control element and vehicle with control element |
DE102021108089A1 (en) | 2021-03-30 | 2022-10-06 | Bayerische Motoren Werke Aktiengesellschaft | Functional module for a vehicle interior paneling, interior paneling and motor vehicle |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19927464B4 (en) | 1999-06-16 | 2008-09-04 | Volkswagen Ag | Steering wheel with feeler elements |
US6817130B2 (en) * | 2002-06-17 | 2004-11-16 | New Jersey Institute Of Technology | Sensor array for unauthorized user prevention device |
US8983732B2 (en) * | 2010-04-02 | 2015-03-17 | Tk Holdings Inc. | Steering wheel with hand pressure sensing |
DE102010035940B4 (en) | 2010-08-31 | 2012-04-26 | Denis Güzelocak | Monitoring and emergency system for motor vehicles |
US8692646B2 (en) * | 2011-04-05 | 2014-04-08 | Kang Won LEE | Piezoresistive type touch panel; manufacturing method thereof; and display device, touch pad, pressure sensor, touch sensor, game console and keyboard having the panel |
DE102011076174A1 (en) * | 2011-05-20 | 2012-11-22 | Robert Bosch Gmbh | Haptic steering wheel, steering wheel system and driver assistance system for a motor vehicle |
EP3466741B1 (en) | 2012-11-27 | 2024-03-06 | Neonode Inc. | Light-based touch controls on a steering wheel and dashboard |
US9896070B2 (en) * | 2013-02-11 | 2018-02-20 | Redevex Corporation | Steering wheel squeeze-activated vehicle braking system |
US9067618B2 (en) * | 2013-06-11 | 2015-06-30 | Honda Motor Co., Ltd. | Touch-based system for controlling an automotive steering wheel |
-
2015
- 2015-10-29 DE DE102015118531.8A patent/DE102015118531A1/en active Pending
-
2016
- 2016-10-27 CN CN201680063251.1A patent/CN108292921A/en active Pending
- 2016-10-27 WO PCT/EP2016/075951 patent/WO2017072242A1/en unknown
- 2016-10-27 EP EP16798419.4A patent/EP3369180A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102015118531A1 (en) | 2017-05-04 |
WO2017072242A1 (en) | 2017-05-04 |
CN108292921A (en) | 2018-07-17 |
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