WO1989008952A1 - Dispositif anti-coincement - Google Patents

Dispositif anti-coincement Download PDF

Info

Publication number
WO1989008952A1
WO1989008952A1 PCT/AT1989/000028 AT8900028W WO8908952A1 WO 1989008952 A1 WO1989008952 A1 WO 1989008952A1 AT 8900028 W AT8900028 W AT 8900028W WO 8908952 A1 WO8908952 A1 WO 8908952A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
electrodes
evaluation circuit
fixed potential
capacitance
Prior art date
Application number
PCT/AT1989/000028
Other languages
German (de)
English (en)
Inventor
Jiri Marek
Original Assignee
Setec Messgeräte Gesellschaft M.B.H.
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 Setec Messgeräte Gesellschaft M.B.H. filed Critical Setec Messgeräte Gesellschaft M.B.H.
Publication of WO1989008952A1 publication Critical patent/WO1989008952A1/fr

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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
    • E05F15/42—Detection using safety edges
    • E05F15/46—Detection using safety edges responsive to changes in electrical capacitance
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/55—Windows

Definitions

  • the invention relates to a pinch protection for windows and doors with a capacitive sensor plate which is connected to a pole of an alternating current source which supplies a changing potential and which has its other pole with a fixed potential, e.g. Ground is connected, which encoder plate acts as an electrode and is isolated from parts which are at this fixed potential, electrically conductive and form a second electrode, and in which an intermediate electrode is provided which is connected to that through the encoder plate formed electrode, optionally connected via an amplifier and isolated from the parts connected to the fixed potential and forming the second electrode, an evaluation circuit responding to changes in capacitance being provided.
  • a capacitive sensor plate which is connected to a pole of an alternating current source which supplies a changing potential and which has its other pole with a fixed potential, e.g. Ground is connected, which encoder plate acts as an electrode and is isolated from parts which are at this fixed potential, electrically conductive and form a second electrode, and in which an intermediate electrode is provided which is connected to that through the encoder plate formed electrode, optionally connected via
  • Such protection was e.g. known from DE-OS 24 53 439.
  • the electrodes which are electrically connected to one another are held at a fixed mutual distance.
  • the evaluation circuit responds in the known case, in which at least two pairs of electrodes with an alternating voltage and intermediate electrodes must be present, to differences in the capacitance that each of the electrode pairs has against the electrode with the fixed potential. In practice, therefore, the evaluation circuit in the known case responds to asymmetries in the capacitance of the electrode pairs against the ground electrode.
  • this solution can only be used in rooms, but is not suitable, for example, as a pinch protection for electrically operated windows of vehicles.
  • different soiling in the area of the two electrode pairs can lead to asymmetries, which can lead to Faulty shutdowns.
  • This is particularly to be feared in the case of rain, since the wetting in the area of the two pairs of electrodes can be quite different, in particular during the journey, during which corresponding swirls can develop.
  • AT-PS 364 796 discloses a pinch protection in which two electrodes are also provided, which are connected to resonant circuits and interact with a common ground electrode.
  • the evaluation circuit responds to asymmetries in the capacitance of the two electrodes with respect to the ground electrode, so that this solution gives rise to the same problems as in the case described above.
  • the aim of the invention is to avoid these disadvantages and to propose a pinch protection of the type mentioned at the outset, which is insensitive to dirt and moisture and which is also suitable for use outdoors and in vehicles.
  • the changing electrodes can be moved relative to one another and the evaluation circuit only responds to changes in capacitance of the electrode connected to the fixed potential compared to the other two electrodes which are supplied with an alternating-voltage signal.
  • the solution according to the invention can also be installed in vehicles, for example for monitoring electrically operated window regulators.
  • one electrode is connected to the intermediate electrode via a non-inverting amplifier, preferably an operational amplifier.
  • the low impedance output of the amplifier is sensitive to capacitive or ohmic loads, e.g. insensitive to dirt and moisture, especially salt water. As a result, a retroactive effect on its input is largely avoided.
  • the AC voltage source is formed by a Schmittrigger gate with charge resistance and working capacity, which is formed by the capacitance of the transmitter plate and the intermediate electrode. This results in a particularly simple structure which can also be realized using conventional integrated components.
  • FIG. 1 and 2 schematically an embodiment of a pinch protection according to the invention in view and section.
  • the frame of the window 8 is provided with an electrically conductive layer serving as an electrode 1, which is arranged insulated from the rest of the body, which is connected as a mass 3.
  • This electrode 1 is connected directly to the output of an evaluation circuit 6 which contains a generator which supplies an AC voltage signal.
  • a further electrode 2 is arranged insulated from ground 3, which is connected via an amplifier 7 to the electrode 1 or the output of the evaluation circuit 6 is connected, the generator of which is connected to ground 3.
  • the space 5 lying between the two electrodes 1 and 2 is thus protected, the two electrodes 1 and 2 being movable relative to one another.
  • the two electrodes are acted upon by the amplifier 7, which is not absolutely necessary, with signals with the same frequency and phase position.
  • electrode 2 could also be connected directly to the evaluation circuit and electrode 1 via the amplifier to it.
  • auxiliary intermediate electrode 10 in the region of the electrode 1, insulated from it and from ground 3, which can also be connected to the output of the amplifier 7.
  • the capacitance of the electrode 1 against ground 3 does not change, which, as can be seen from FIG. 2, acts as the working capacity C of the Schmitt trigger S acting as a generator.
  • the output signal of the evaluation circuit 6 does not change, which is fed to a safety circuit, not shown, for example to interrupt the movement of the window 8 in the direction of the arrow 9.
  • the circuit trigger S is connected to a resistor R and the amplifier 7 is formed by an operational amplifier SF.

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)
  • Window Of Vehicle (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

Un dispositif anti-coincement pour portes et fenêtres comprend une plaquette de détection capacitive connectée à un pôle, qui fournit un potentiel variable, d'une source de courant alternatif (S) dont l'autre pôle est connecté à un potentiel fixe, par exemple la masse (3). La plaquette de détection fonctionne comme une électrode (1) isolée par rapport à des pièces électroconductrices connectées au potentiel qui forment une deuxième électrode. Une électrode intermédiaire (2) est connectée à l'électrode (1) formée par la plaquette de détection et isolée par rapport aux pièces connectées au potentiel fixe qui forment la deuxième électrode. Un circuit d'évaluation (6) réagit aux variations de la capacité. Afin d'éviter qu'un tel dispositif anti-coincement ne soit affecté par l'humidité et des salissures, les deux électrodes (1, 2) connectées au potentiel variable sont mobiles l'une par rapport à l'autre et le circuit d'évaluation (6, 6') ne réagit qu'aux variations de la capacité de l'électrode (3) connectée au potentiel fixe par rapport aux deux autres électrodes (1, 2), qui reçoivent un signal de tension alternative en phase.
PCT/AT1989/000028 1988-03-18 1989-03-14 Dispositif anti-coincement WO1989008952A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA732/88 1988-03-18
AT0073288A AT391913B (de) 1988-03-18 1988-03-18 Einklemmschutz fuer fenster und tueren

Publications (1)

Publication Number Publication Date
WO1989008952A1 true WO1989008952A1 (fr) 1989-09-21

Family

ID=3498347

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1989/000028 WO1989008952A1 (fr) 1988-03-18 1989-03-14 Dispositif anti-coincement

Country Status (4)

Country Link
EP (1) EP0359797A1 (fr)
JP (1) JPH03500598A (fr)
AT (1) AT391913B (fr)
WO (1) WO1989008952A1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004353A1 (de) * 1990-02-13 1991-08-14 Brose Fahrzeugteile Einklemmschutz
US5074073A (en) * 1990-10-17 1991-12-24 Zwebner Ascher Z Car door safety device
US6157024A (en) * 1999-06-03 2000-12-05 Prospects, Corp. Method and apparatus for improving the performance of an aperture monitoring system
US6169379B1 (en) 1995-05-05 2001-01-02 Prospects Corporation Power driven venting of a vehicle
US6305123B1 (en) * 1999-09-17 2001-10-23 Meritor Light Vehicle Systems, Llc Obstruction sensing a signal transmitted across window
US6337549B1 (en) 2000-05-12 2002-01-08 Anthony Gerald Bledin Capacitive anti finger trap proximity sensor
US6693273B1 (en) 2000-05-02 2004-02-17 Prospects, Corp. Method and apparatus for monitoring a powered vent opening with a multifaceted sensor system
WO2006031185A1 (fr) 2004-09-17 2006-03-23 Electrolux Home Products Corporation N.V. Systeme de capteur capacitif
US7038414B2 (en) 2000-08-03 2006-05-02 Atoma International Corp. Vehicle closure anti-pinch assembly having a non-contact sensor
US20110041409A1 (en) * 2009-08-21 2011-02-24 Nartron Corporation Vehicle Assemblies Having Fascia Panels with Capacitance Sensors Operative for Detecting Proximal Objects
US8436628B2 (en) 2006-03-17 2013-05-07 Electrolux Home Products Corporation N.V. Door position sensor
US9051769B2 (en) 2009-08-21 2015-06-09 Uusi, Llc Vehicle assembly having a capacitive sensor
US9199608B2 (en) 2009-08-21 2015-12-01 Uusi, Llc Keyless entry assembly having capacitance sensor operative for detecting objects
US9575481B2 (en) 2009-08-21 2017-02-21 Uusi, Llc Fascia panel assembly having capacitance sensor operative for detecting objects
US9845629B2 (en) 2009-08-21 2017-12-19 Uusi, Llc Vehicle keyless entry assembly having capacitance sensor operative for detecting objects
US10017977B2 (en) 2009-08-21 2018-07-10 Uusi, Llc Keyless entry assembly having capacitance sensor operative for detecting objects
US10954709B2 (en) 2009-08-21 2021-03-23 Uusi, Llc Vehicle assembly having a capacitive sensor
US11634937B2 (en) 2009-08-21 2023-04-25 Uusi, Llc Vehicle assembly having a capacitive sensor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389568A1 (fr) * 1977-05-04 1978-12-01 Maschf Augsburg Nuernberg Ag
WO1986002506A2 (fr) * 1984-10-15 1986-04-24 Memco-Med Limited Commande automatique utilisant des detecteurs de proximite
DE3521004A1 (de) * 1985-06-12 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Steueranordnung fuer einen elektromotorischen antrieb
DE3527405A1 (de) * 1985-07-31 1987-02-12 Bosch Gmbh Robert Vorrichtung zum schutz von personen gegen einklemmen in motorisch verschliessbaren oeffnungen in kraftfahrzeugen
FR2599013A1 (fr) * 1986-05-26 1987-11-27 Kone Elevator Gmbh Dispositif de securite pour porte d'ascenseur.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI53294C (fi) * 1973-11-13 1978-04-10 Kone Oy Kapacitiv sensor foer automatiska doerrar
DE3509507A1 (de) * 1984-03-17 1985-09-19 Sartorius GmbH, 3400 Göttingen Schaltungsanordnung fuer einen differentialkondensator-messaufnehmer
DE3516162A1 (de) * 1985-05-06 1985-10-31 Haberland, Rüdiger, Prof. Dr.-Ing., 6750 Kaiserslautern Auswerteelektronik fuer differentialkondensatoren zur verwendung in sensoren

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389568A1 (fr) * 1977-05-04 1978-12-01 Maschf Augsburg Nuernberg Ag
WO1986002506A2 (fr) * 1984-10-15 1986-04-24 Memco-Med Limited Commande automatique utilisant des detecteurs de proximite
DE3521004A1 (de) * 1985-06-12 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Steueranordnung fuer einen elektromotorischen antrieb
DE3527405A1 (de) * 1985-07-31 1987-02-12 Bosch Gmbh Robert Vorrichtung zum schutz von personen gegen einklemmen in motorisch verschliessbaren oeffnungen in kraftfahrzeugen
FR2599013A1 (fr) * 1986-05-26 1987-11-27 Kone Elevator Gmbh Dispositif de securite pour porte d'ascenseur.

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004353A1 (de) * 1990-02-13 1991-08-14 Brose Fahrzeugteile Einklemmschutz
US5074073A (en) * 1990-10-17 1991-12-24 Zwebner Ascher Z Car door safety device
US6169379B1 (en) 1995-05-05 2001-01-02 Prospects Corporation Power driven venting of a vehicle
US6157024A (en) * 1999-06-03 2000-12-05 Prospects, Corp. Method and apparatus for improving the performance of an aperture monitoring system
US6305123B1 (en) * 1999-09-17 2001-10-23 Meritor Light Vehicle Systems, Llc Obstruction sensing a signal transmitted across window
US6693273B1 (en) 2000-05-02 2004-02-17 Prospects, Corp. Method and apparatus for monitoring a powered vent opening with a multifaceted sensor system
US6337549B1 (en) 2000-05-12 2002-01-08 Anthony Gerald Bledin Capacitive anti finger trap proximity sensor
US7038414B2 (en) 2000-08-03 2006-05-02 Atoma International Corp. Vehicle closure anti-pinch assembly having a non-contact sensor
WO2006031185A1 (fr) 2004-09-17 2006-03-23 Electrolux Home Products Corporation N.V. Systeme de capteur capacitif
AU2005285525B2 (en) * 2004-09-17 2010-06-10 Electrolux Home Products Corporation N.V. Capacitive sensor system
US8049518B2 (en) 2004-09-17 2011-11-01 Electrolux Home Products Corporation N.V. Capacitive sensor system
CN101044680B (zh) * 2004-09-17 2012-05-23 伊莱克斯家用产品股份有限公司 容性传感器系统
US8436628B2 (en) 2006-03-17 2013-05-07 Electrolux Home Products Corporation N.V. Door position sensor
US20110041409A1 (en) * 2009-08-21 2011-02-24 Nartron Corporation Vehicle Assemblies Having Fascia Panels with Capacitance Sensors Operative for Detecting Proximal Objects
US9051769B2 (en) 2009-08-21 2015-06-09 Uusi, Llc Vehicle assembly having a capacitive sensor
US9199608B2 (en) 2009-08-21 2015-12-01 Uusi, Llc Keyless entry assembly having capacitance sensor operative for detecting objects
US9575481B2 (en) 2009-08-21 2017-02-21 Uusi, Llc Fascia panel assembly having capacitance sensor operative for detecting objects
US9705494B2 (en) 2009-08-21 2017-07-11 Uusi, Llc Vehicle assemblies having fascia panels with capacitance sensors operative for detecting proximal objects
US9797179B2 (en) 2009-08-21 2017-10-24 Uusi, Llc Vehicle assembly having a capacitive sensor
US9845629B2 (en) 2009-08-21 2017-12-19 Uusi, Llc Vehicle keyless entry assembly having capacitance sensor operative for detecting objects
US10017977B2 (en) 2009-08-21 2018-07-10 Uusi, Llc Keyless entry assembly having capacitance sensor operative for detecting objects
US10954709B2 (en) 2009-08-21 2021-03-23 Uusi, Llc Vehicle assembly having a capacitive sensor
US11634937B2 (en) 2009-08-21 2023-04-25 Uusi, Llc Vehicle assembly having a capacitive sensor

Also Published As

Publication number Publication date
AT391913B (de) 1990-12-27
ATA73288A (de) 1990-06-15
JPH03500598A (ja) 1991-02-07
EP0359797A1 (fr) 1990-03-28

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