EP3414839A1 - Bedienvorrichtung für ein kraftfahrzeug mit kapazitiver annäherungssensorik sowie kraftfahrzeug - Google Patents
Bedienvorrichtung für ein kraftfahrzeug mit kapazitiver annäherungssensorik sowie kraftfahrzeugInfo
- Publication number
- EP3414839A1 EP3414839A1 EP17703998.9A EP17703998A EP3414839A1 EP 3414839 A1 EP3414839 A1 EP 3414839A1 EP 17703998 A EP17703998 A EP 17703998A EP 3414839 A1 EP3414839 A1 EP 3414839A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- operating
- electrodes
- motor vehicle
- operating device
- capacitive sensor
- 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- Withdrawn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
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
- H03K17/945—Proximity switches
- H03K17/955—Proximity switches using a capacitive detector
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/960755—Constructional details of capacitive touch and proximity switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/960755—Constructional details of capacitive touch and proximity switches
- H03K2217/96078—Sensor being a wire or a strip, e.g. used in automobile door handles or bumpers
Definitions
- Control device for a motor vehicle with capacitive proximity sensor as well
- the present invention relates to an operating device for a motor vehicle with a control element, which has a control surface, with a capacitive
- the present invention relates to a motor vehicle with such an operating device.
- Such operating devices usually comprise an operating element which has a control surface.
- This control surface can be operated or actuated with an input device, for example a finger or an operator's hand.
- an input device for example a finger or an operator's hand.
- the operating action can be detected and a control signal is output, with the one associated with the operating device
- Functional device of the motor vehicle can be controlled.
- Functional device may be, for example, an air conditioner, an information and maintenance system, a navigation system or the like.
- Operating devices are known from the prior art, which include a capacitive sensor device or a capacitive proximity sensor as a sensor device.
- a capacitive film structure is used on the operating element, which is arranged on the back of the operating element.
- Such capacitive film structures are usually expensive and they also have a flexible cable connection and a contact plug with a
- Such an evaluation device serves to the Capacitance change to the capacitive sensor device or to detect the electrode and from this an approximation of the input device to the
- DE 10 2009 058 592 A1 describes an operating and / or control element for a vehicle, which has a capacitive sensor. It is on one
- the capacitive sensor has a plurality of separate
- Sensor fields which are aligned at least in the direction of a control room and in predetermined directions laterally thereto, so that an approach or a touch of an operator within the control room is three-dimensionally selectively detectable.
- WO 2007/014780 A1 describes an operating element for a
- the operating element comprises a capacitive-based, touch-sensitive push button and a housing, wherein the push button is slidably mounted in the housing.
- a capacitance-forming capacitor is formed of a metal portion applied on an inside or outside of a surface facing the operator, and the metallic portion forms an electrode of the capacitor, which is electrically contacted in the case.
- Operating device for a motor vehicle which has a capacitive sensor device, can be provided easily and inexpensively.
- Operating element which has a control surface.
- a capacitive sensor device having at least one electrode, which on one of the control surface opposite the back of
- the capacitive sensor device is designed to detect a change in capacitance at the at least one electrode.
- the operating device further comprises an evaluation device for detecting an approach of an input device to the operating surface on the basis of the detected Capacitance change. It is provided that the capacitive sensor device has a plurality of electrodes and is adapted to detect the change in capacitance at each of the electrodes. Furthermore, the evaluation device is designed to detect the approach of the input device based on the respective detected at the electrodes capacitance change.
- An operating device can be used in a motor vehicle.
- the operating device may be arranged in an interior of the motor vehicle, for example in a center console or a dashboard.
- the operating device has the operating element, which may be formed, for example, from a plastic.
- the control element can be part of a switch panel.
- the operating element has an operating surface which can be operated by the driver or another occupant of the motor vehicle.
- the control surface can, for example, the
- a capacitive sensor device which has at least one electrode which is arranged on the rear side of the operating element.
- the approach of the operating device for example a finger or a hand of a vehicle occupant, causes a change in capacitance at the electrode of the capacitive sensor device. This capacity change can be done with the
- Evaluation device which is connected to the capacitive sensor device electrically or for data transmission, are evaluated. In this way, the
- the capacitive sensor device has a plurality of electrodes and is designed to determine the capacitance change at each of the electrodes. Furthermore, with the evaluation device the
- Capacity change can be used at the respective electrodes to the
- the respective electrodes serve as antennas to form an electric field for detecting the input device.
- the capacitive sensor device can thus be designed in the manner of a self-capacitance sensor (Seif Capacitance Sensor).
- a self-capacitance sensor Seif Capacitance Sensor
- Such capacitive sensors allow the recognition of the approach of the input device with a high
- Electrostatic discharge (ESD - Electrostatic Discharge) can not be met.
- Electrostatic discharge can be dispensed with by the arrangement of the electrodes on the back of a capacitive film structure.
- the operating device can thus
- the operating device can be operated safely and reliably.
- the electrodes are each formed linear and arranged parallel to each other.
- line-shaped means that the respective electrodes have a significantly greater extent in the longitudinal direction than in the transverse direction. The length of the respective electrodes is thus significantly greater than their width.
- the electrodes are arranged substantially parallel to one another.
- Sensor device may for example have three electrodes which are arranged parallel to each other. By evaluating the capacitance change at each of the electrodes, with respect to a direction perpendicular to the main extension direction, the
- Electrodes are detected where the control element is touched or in which area the input device approaches the control surface. Thus, it can be provided, for example, that depending on where the touch or approach is detected, a corresponding control signal is output to a functional device coupled to the operating device.
- the evaluation device is adapted to a relative position between the input device and the operating surface on the basis of the respective
- the respective differences of the capacitances are determined at the electrodes and from this the direction of the approach of the input device is derived. Furthermore, a distance between the input device or the finger and the operating surface can be determined on the basis of the respective change in capacitance.
- the operating element is formed from a plastic and the respective electrodes are formed by a metal layer, in particular a chromium layer, which is applied to the back of the operating element.
- chromium can be applied in regions on the rear side of the operating element, which is provided by a plastic component.
- the back of the control element can be completely coated with the metal layer and then the metal layer can be structured. It can also be provided that first a masking layer is applied to the back and then a coating process is performed. Basically, the production of the operating element or the plastic component and the
- the respective electrodes are arranged at a predetermined distance from each other. This distance between the electrodes, which are arranged in particular parallel to each other, depending on the
- Insulating element arranged, which is formed of an electrically insulating material. Another way to meet the requirements regarding the
- an electrically insulating material or an insulating element between the parallel electrodes.
- This insulating element may be formed of a plastic. It can also be provided that the insulation element is a part or a structure of the operating element. Furthermore, it can be provided that the insulation element is formed by a corresponding lacquer.
- the evaluation device comprises a printed circuit board and the electrodes are in each case electrically connected to the printed circuit board by means of a resilient contact element.
- the evaluation device may comprise a printed circuit board on which a plurality of electronic components may be arranged. These electronic components can form an evaluation circuit, by means of which capacitances at the respective electrodes are detected and their changes evaluated can be.
- On the circuit board may also be a computing device, such as a microprocessor or the like, be arranged, with the basis of the respective change in capacity, the approach can be detected.
- the operating element and the circuit board are each arranged fixed.
- the control element and the printed circuit board are therefore not arranged to be movable relative to one another.
- the respective resilient contact elements can be arranged.
- the respective electrodes can be electrically connected to the circuit board.
- control element and the circuit board are arranged parallel to each other and the respective resilient contact elements are formed as a spiral spring.
- These coil springs can be formed from an electrically conductive material, in particular a metal. These spiral springs can thus between the PCB and the
- Control element are introduced, that these each have a spring force on the
- a recess may be provided on the operating element and / or the circuit board, in which the coil springs are introduced.
- an electrical connection between the electrodes and the circuit board can be provided in a cost effective manner.
- the electrical connection by means of the resilient contact elements can also be ensured if vibrations occur during operation of the motor vehicle.
- the operating element can be, for example, a diaphragm of the operating device.
- an additional cover can be arranged on the back of this control element.
- This cover may be formed of a plastic.
- the electrodes can be protected on the back of the control.
- it may also be provided that both in the
- This passage opening can serve to carry out further operating parts, for example buttons or the like.
- a motor vehicle according to the invention comprises an inventive
- the motor vehicle is designed in particular as a passenger car.
- FIG. 1 shows a motor vehicle according to an embodiment of the present invention
- Invention having an operating device
- FIG. 2 shows the operating device in a perspective view
- FIG. 3 shows the operating device in a further perspective view.
- Fig. 1 shows a motor vehicle 1 according to an embodiment of the present invention in a plan view.
- the motor vehicle 1 is presently designed as a passenger car.
- an operating device 3 is arranged in an interior 2 of the motor vehicle 1, in an interior 2 of the motor vehicle 1, an operating device 3 is arranged.
- the operating device 3 comprises a control element 4, which of a Inmates of the motor vehicle 1 can be operated.
- a control element 4 which of a Inmates of the motor vehicle 1 can be operated.
- a control element 4 which of a Inmates of the motor vehicle 1 can be operated.
- a control element 4 which of a Inmates of the motor vehicle 1 can be operated.
- a control element 4 which of a Inmates of the motor vehicle 1 can be operated.
- a control element 4 which of a Inmates of the motor vehicle 1 can be operated.
- a control element 4 which of a Inmates of the motor vehicle 1 can be operated.
- a control element 4 which of a Inmates of the motor vehicle 1 can be
- Control surface 5 of the control element 4 are operated.
- the operating device 3 or the operating element 4 may be arranged in the interior 2 of the motor vehicle 1 such that the operating surface 5 of the operating element 4 faces the occupant of the motor vehicle 1.
- the operating device 3 further comprises a capacitive sensor device 7, which is arranged on a rear side 6 of the operating element 4.
- the back is the one
- the capacitive sensor device 7 comprises at least one electrode 8 (see FIG. 2). Furthermore, the operating device 3 comprises an evaluation device 9, with the basis of the
- a passage opening 14 is also introduced, which can serve as a passage for further operating parts, such as buttons or the like, for example.
- Fig. 2 shows the operating device 2 in a perspective view. It can be seen that the operating element 4 is substantially plate-shaped.
- Control element 4 may be formed for example of a plastic.
- the electrodes 8 can be seen, which are arranged on the rear side 6 of the operating element 4.
- the capacitive sensor device 7 comprises three electrodes 8, which are formed substantially linear.
- the respective electrodes 8 are arranged parallel to each other.
- the respective electrodes 8 are formed by metal structures, which are applied to the back 6.
- the respective electrodes 8 may be formed of chromium and applied to the backside 6 by electrochemical deposition.
- the respective electrodes 8 also have contact areas 11. At the contact areas 1 1, the respective electrodes 8 are electrically connected by means of resilient contact elements 12 to a printed circuit board 13 of the evaluation device 9.
- the resilient contact elements 12 are presently designed as coil springs.
- the evaluation device 9 comprises the printed circuit board 13, on which a plurality of electronic components not shown here can be arranged.
- a computing device such as a microprocessor
- the capacitance change can be detected at each of the electrodes 8.
- This capacitance change occurs when an input device 10, which in the present case is formed by a finger, contacts the operating surface 5 approaches. In this case, it can be determined on the basis of the respective capacitances on the electrodes 8, from which direction the input device 10 or the finger approaches the operating surface 5. In addition, it can be determined based on the respective capacitances at the electrodes 8, which distance the input device 10 to the
- Operating surface 5 has. The distance between the adjacent electrodes 8 is chosen so that they can not be damaged by overvoltages due to electrostatic discharge.
- FIG. 3 shows the operating device 2 in a further perspective view.
- a cover element 15 is arranged on the rear side 6 of the operating element 4.
- This cover member 15 may also be formed of a plastic.
- the electrodes 8 are covered on the back 6 of the control element 4.
- the through hole 14 also extends through the cover 15.
- the cover 15 has holes through which the resilient contact elements 12 are guided. It can also be provided that corresponding recesses are arranged on the printed circuit board 13 in order to hold the resilient contact elements 12.
Landscapes
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016102392.2A DE102016102392A1 (de) | 2016-02-11 | 2016-02-11 | Bedienvorrichtung für ein Kraftfahrzeug mit kapazitiver Annäherungssensorik sowie Kraftfahrzeug |
| PCT/EP2017/052832 WO2017137484A1 (de) | 2016-02-11 | 2017-02-09 | Bedienvorrichtung für ein kraftfahrzeug mit kapazitiver annäherungssensorik sowie kraftfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3414839A1 true EP3414839A1 (de) | 2018-12-19 |
Family
ID=57995212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17703998.9A Withdrawn EP3414839A1 (de) | 2016-02-11 | 2017-02-09 | Bedienvorrichtung für ein kraftfahrzeug mit kapazitiver annäherungssensorik sowie kraftfahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3414839A1 (de) |
| DE (1) | DE102016102392A1 (de) |
| WO (1) | WO2017137484A1 (de) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0802500A2 (de) * | 1996-04-15 | 1997-10-22 | Pressenk Instruments Inc. | Berührungssensor ohne Kissen |
| WO2006133082A1 (en) * | 2005-06-03 | 2006-12-14 | Synaptics Incorporated | Methods and systems for detecting a capacitance using switched charge transfer techniques |
| WO2010057625A1 (de) * | 2008-11-18 | 2010-05-27 | Ident Technology Ag | Kapazitives sensorsystem |
| WO2013117815A1 (en) * | 2012-02-06 | 2013-08-15 | Canatu Oy | A touch sensing device and a detection method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060073272A1 (en) * | 2004-09-28 | 2006-04-06 | Clearpath Technologies Corp. | Control panel and method of manufacturing |
| DE102004060846B4 (de) * | 2004-12-17 | 2008-12-18 | Diehl Ako Stiftung & Co. Kg | Kapazitiver Berührungsschalter |
| EP1913612B1 (de) | 2005-08-03 | 2011-05-18 | Preh GmbH | Bedienelement für ein kraftfahrzeug |
| TW200947030A (en) * | 2008-05-13 | 2009-11-16 | Tpk Touch Solutions Inc | Capacitive touch control device and method thereof |
| DE102009058592A1 (de) | 2009-12-17 | 2011-06-22 | Valeo Schalter und Sensoren GmbH, 74321 | Bedien- und/oder Steuerelement mit kapazitivem Sensor |
| US8952919B2 (en) * | 2011-02-25 | 2015-02-10 | Taiwan Green Point Enterprises Co., Ltd. | Capacitive touch sensitive housing and method for making the same |
| KR101183144B1 (ko) * | 2012-05-25 | 2012-09-14 | 실력산업 (주) | 정전용량 감지형 터치 스위치 |
-
2016
- 2016-02-11 DE DE102016102392.2A patent/DE102016102392A1/de not_active Withdrawn
-
2017
- 2017-02-09 EP EP17703998.9A patent/EP3414839A1/de not_active Withdrawn
- 2017-02-09 WO PCT/EP2017/052832 patent/WO2017137484A1/de not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0802500A2 (de) * | 1996-04-15 | 1997-10-22 | Pressenk Instruments Inc. | Berührungssensor ohne Kissen |
| WO2006133082A1 (en) * | 2005-06-03 | 2006-12-14 | Synaptics Incorporated | Methods and systems for detecting a capacitance using switched charge transfer techniques |
| WO2010057625A1 (de) * | 2008-11-18 | 2010-05-27 | Ident Technology Ag | Kapazitives sensorsystem |
| WO2013117815A1 (en) * | 2012-02-06 | 2013-08-15 | Canatu Oy | A touch sensing device and a detection method |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2017137484A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016102392A1 (de) | 2017-08-17 |
| WO2017137484A1 (de) | 2017-08-17 |
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