DE10311132A1 - Occupant sensor for motor vehicle seat airbag uses heating wire for seat heater as sensing electrode for passenger - Google Patents

Occupant sensor for motor vehicle seat airbag uses heating wire for seat heater as sensing electrode for passenger Download PDF

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Publication number
DE10311132A1
DE10311132A1 DE10311132A DE10311132A DE10311132A1 DE 10311132 A1 DE10311132 A1 DE 10311132A1 DE 10311132 A DE10311132 A DE 10311132A DE 10311132 A DE10311132 A DE 10311132A DE 10311132 A1 DE10311132 A1 DE 10311132A1
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Germany
Prior art keywords
seat
vehicle
sensors
heating
impact
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DE10311132A
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German (de)
Inventor
Bernd Piller
Andreas Schirling
Peter Stauder
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Continental Teves AG and Co OHG
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Continental Teves AG and Co OHG
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Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Priority to DE10311132A priority Critical patent/DE10311132A1/en
Publication of DE10311132A1 publication Critical patent/DE10311132A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/0153—Passenger detection systems using field detection presence sensors
    • B60R21/01532—Passenger detection systems using field detection presence sensors using electric or capacitive field sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
    • B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
    • B60N2/003—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat
    • B60N2/0034—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat in, under or on the seat cover
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/56—Heating or ventilating devices
    • B60N2/5678—Heating or ventilating devices characterised by electrical systems
    • B60N2/5685—Resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/0153—Passenger detection systems using field detection presence sensors
    • B60R21/0154—Passenger detection systems using field detection presence sensors in combination with seat heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
    • B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2210/00—Sensor types, e.g. for passenger detection systems or for controlling seats
    • B60N2210/10—Field detection presence sensors
    • B60N2210/12—Capacitive; Electric field
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R2021/01313—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over monitoring the vehicle steering system or the dynamic control system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R2021/01315—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over monitoring occupant displacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2260/00—Interaction of vehicle brake system with other systems
    • B60T2260/09—Complex systems; Conjoint control of two or more vehicle active control systems

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)

Abstract

The method of controlling a passenger safety system for a motor vehicle has the passenger seat formed as a capacitive sensor, having an electrode positioned between the seat cover and upholstery which works together with the vehicle mass. The electrode can be a heating wire for the seat heating system, electrically separated from the vehicle mass.

Description

Die Erfindung betrifft ein Verfahren und eine Einrichtung zum Ansteuern eines reversiblen Insassenschutzmittels in einem Kraftfahrzeug.The invention relates to a method and a device for driving a reversible occupant protection means in a motor vehicle.

In heutigen Kraftfahrzeugen werden ansteuerbare Rückhaltemittel wie Airbag und Sicherheitsgurt eingesetzt, um die Unfallfolgen für einen Fahrzeuginsassen zu mildern. Neben den gängigen Rückhaltemitteln wie Airbag und Sicherheitsgurt mit Gurtstraffer gibt es eine Reihe weiterer ansteuerbarer Insassenschutzmittel, welche eine Rückhaltewirkung und/oder eine energieabsorbierende Wirkung zum Schutz eines Insassen bei einer Kollision entfallen. Beispiele für solche Insassenschutzmittel sind verfahrbare Prallkörper, Kissen und Kopfstützen, welche mittels einer Ansteuerung in Größe, Härte, Form und Lage verändert werden können. Neben diesen Insassenschutzmitteln können zur Verminderung der Unfallschwere weitere ansteuerbare Schutzmittel vorgesehen werden, welche die Unfallfolgen für einen Fahrzeuginsassen vermindern, indem der Insasse positioniert wird, das heißt, er wird in eine für einen Unfall günstige Stellung gebracht. Mittel zum Positionieren des Insassen sind beispielsweise elektrische Sitzverstellungen, eine Kopfstützenverstellung, Sicherheitsgurtstraffer und verfahrbare Polster.In today's motor vehicles controllable restraint devices such as airbag and seat belt used to reduce the consequences of an accident Mitigate vehicle occupants. In addition to the common restraint devices such as airbag and Seat belt with belt tensioner there are a number of other controllable occupant protection devices, which have a restraining effect and / or an energy absorbing effect to protect an occupant a collision is eliminated. Examples of such occupant protection devices are movable impact bodies, Pillows and headrests, which are changed in size, hardness, shape and position by means of a control can. In addition to these occupant protection devices can help reduce the severity of accidents further controllable protective means are provided, which the Consequences of accidents for lessen a vehicle occupant by positioning the occupant will, that is, he will be in one for an accident favorable Positioned. Means for positioning the occupant are, for example electric seat adjustments, a headrest adjustment, seat belt tensioners and movable upholstery.

Für verschiedene Applikationen ist es zum Einleiten vorbeugender Maßnahmen zur Verminderung der Unfallfolgen notwendig über die Sitzbelegung im Fahrzeug informiert zu sein. Sicherheitsfunktionen wie Airbag, Gurtstraffer usw. müssen nur an diesen Sitzplätzen ausgelöst werden, auf denen sich auch Personen befinden. Zum Teil ist es auch von Vorteil zu erkennen, ob Kleinkinder oder erwachsene Personen auf dem Sitz sitzen oder ob die Füße des Beifahrers auf dem Armaturenbrett liegen.For different applications it is to initiate preventive measures necessary to reduce the consequences of the accident via the seat occupancy in the vehicle to be informed. Safety functions such as airbag, belt tensioner etc. need only at these seats triggered on which there are also people. In part it is also from Advantage of recognizing whether toddlers or adults are on sit in the seat or whether the feet of the passenger lying on the dashboard.

Für die aktive Ansteuerung von Insassenschutzmitteln kann die Information über die Sitzbelegung auch dahingehend genutzt werden, bei einem unvermeidbaren Aufprall auf ein Hindernis einen „günstigen" Crashpunkt am Fahrzeug zu erreichen. Ist der Beifahrersitz z.B. nicht belegt, ist es sinnvoller ein Hindernis mit der Beifahrerseite zu treffen als mit der Fahrerseite. Die Belastungen des Fahrers, vor allem im Fußraum, fallen somit wesentlich günstiger aus.For the active activation of occupant protection devices can provide information about the Seat occupancy can also be used with an inevitable Impact on an obstacle to reach a "cheap" crash point on the vehicle the passenger seat e.g. if not used, it makes more sense to be an obstacle to hit with the passenger side than with the driver side. The burdens of the driver, especially in the footwell, are therefore much cheaper.

Fahrzeugsitze sind in der Regel aus einem Metallrahmen mit verschiedenen Verstellmechanismen, Federelementen, einer Polsterauflage und einem Sitzbezug aufgebaut. Höherwertige Sitze besitzen außerdem Stellmotoren für die elektrische Sitzverstellung.Vehicle seats are usually out a metal frame with various adjustment mechanisms, spring elements, a cushion and a seat cover. Higher Rate Also have seats Servomotors for the electric seat adjustment.

Zum Teil kommt auch eine Sitzbelegungserkennungen zum Einsatz, die mit speziellen Schaltern oder Sensormatten arbei tet, welche in die Sitze integriert sind. Hierfür fallen extra Kosten an.In some cases there is also a seat occupancy detection for use with special switches or sensor mats, which are integrated into the seats. There are extra costs for this.

Moderne hochwertige Fahrzeuge besitzen in der Regel eine Sitzheizung, welche aus einer „Heizfolie" mit Heizfäden, zwischen Sitzbezug und Polsterung, besteht.Own modern high quality vehicles usually a seat heater, which consists of a "heating foil" with filaments, between the seat cover and Upholstery.

Der vorliegende Erfindung liegt die Aufgabe zugrunde, die Unfallfolgen im Straßenverkehr zu vermindern.The present invention is the Task to reduce the consequences of accidents in road traffic.

Die Erfindung behandelt eine kapazitive Sitzbelegungserkennung unter zu Hilfenahme von Heizdrähten der Sitzheizung, deren Einsatz als Insassenschutzmittel, vorzugsweise in Verbindung mit aktiven, das heißt Fahrer unabhängig betätigbaren Brems- und Lenksystemen. ESP Systeme, mittels denen eine Drehung um die Hochachse erreicht werden kann sowie die zum Einsatz kommenden Sensoren, sind zum Beispiel in der DE 195 15 050 A1 beschrieben, deren Inhalt Bestandteil der vorliegenden Anmeldung sein soll.The invention deals with capacitive seat occupancy detection with the aid of heating wires of the seat heating, their use as occupant protection means, preferably in conjunction with active, ie driver, independently actuated braking and steering systems. ESP systems, by means of which a rotation around the vertical axis can be achieved, as well as the sensors used, are for example in the DE 195 15 050 A1 described, the content of which is to be part of the present application.

Erfindungsgemäß bilden die Metallheizfäden der Sitzheizung eine Elektrode und die Fahrzeugmasse bildet die Gegenelektrode.According to the invention form the metal filaments Seat heating an electrode and the vehicle mass forms the counter electrode.

Zwischen Fahrzeugmasse und Sitzheizung kann eine Kapazität gemessen werden. Befindet sich eine Person auf dem Sitz, wird diese Kapazität verändert. Die Person verhält sich hierbei wie eine parallelgeschaltete Kapazität. Wichtig für dieses Prinzip ist auf jeden Fall, dass die Sitzheizung galvanisch von der Fahrzeugmasse getrennt ist.Between vehicle mass and seat heating can a capacity be measured. If there is a person in the seat, they will capacity changed. The person behaves like a capacitance connected in parallel. Important for this In any case, the principle is that the seat heating is galvanically isolated from the Vehicle mass is separated.

Es gibt zwei Möglichkeiten zur Realisation:There are two ways to do this:

1. Zusätzliche Metallfäden / Vlies1. Additional metal threads / fleece

In die „Heizfolie" werden einige Fäden bzw. ein Vlies mehr eingebracht, welche nicht zum Heizen benötigt werden. Die Folie wird wie gewohnt in den Sitz eingearbeitet. Zum Heizen wird ein Teil der Fäden benutzt, zur Sitzbelegungserkennung der andere.A few threads or one more fleece are introduced into the "heating foil", which is not needed for heating become. The film is worked into the seat as usual. To the Heating becomes part of the thread used, for seat occupancy detection the other.

2. Übermodulation2. Overmodulation

Zur Heizung und zur Sitzbelegungserkennung werden die gleichen Metallfäden benutzt. Während die Heizung mit Gleichspannung versorgt wird, wird die Sitzbelegungserkennung mit hochfrequenten Wechselspannungspulsen realisiert. Wichtig hierbei ist die galvanische Trennung der Heizungsmasse von der Fahrzeugmasse.For heating and seat occupancy detection are the same metal threads used. While the heating is supplied with DC voltage, the seat occupancy detection realized with high-frequency alternating voltage pulses. Important here is the electrical isolation of the heating mass from the vehicle mass.

Ist keine Sitzheizung vorhanden, kann in den Sitz ein metallisches oder metallisiertes Vlies eingelegt werden.If there is no seat heating, a metallic or metallized fleece can be inserted into the seat become.

Claims (9)

Einrichtung zum Erkennen einer Einwirkung auf einen Sitz, wie einen Fahrzeugsitz, durch einen Fahrzeuginsassen dadurch gekennzeichnet, dass der Sitz als kapazitive Erkennung ausgebildet ist, die mindestens eine unter der Umhüllung, zum Beispiel zwischen dem Sitzbezug und der Polsterung, angeordnete Elektrode aufweist, die mit der Fahrzeugmasse des Fahrzeugs zusammenwirkt.Device for detecting an action on a seat, such as a vehicle seat, characterized by a vehicle occupant, characterized in that the seat is designed as a capacitive detection, which has at least one electrode arranged under the covering, for example between the seat cover and the upholstery, which with the vehicle mass of the vehicle interacts. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Elektrode die Heizdrähte der Sitzheizung sind.Device according to claim 1, characterized in that the electrode is the heating wires the seat heating. Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass Heizdrähte der Sitzheizung galvanisch von der Fahrzeugmasse getrennt sind.Device according to claim 1 or 2, characterized in that that heating wires the seat heating are galvanically isolated from the vehicle mass. Fahrzeugsitz, dadurch gekennzeichnet, dass er eine kapazitive Erkennung aufweist, deren Wert bei einer Sitzbelegung veränderbar ist.Vehicle seat, characterized in that it is a has capacitive detection, the value of a seat occupancy variable is. Verfahren zum Erfassen einer physikalischen Größe mittels eines Fahrzeugsitzes, dadurch gekennzeichnet, dass bei einem als kapazitive Erkennung ausgebildeten Sitz die Dämpfung erfasst wird, die bei einer Einwirkung des Fahrzeuginsassen auf den Sitz entsteht.Method for detecting a physical quantity using of a vehicle seat, characterized in that at an as capacitive detection trained seat the damping is detected at an influence of the vehicle occupant on the seat arises. Verfahren zum Ansteuern eines reversiblen Insassenschutzmittels in einem Kraftfahrzeug mit einer Sensorik, z.B. ESP Sensorik, welche Fahrzeugzustandsdaten erfasst und einem reversiblen Insassenschutzmittel, welches vor einem Kollisionszeitpunkt ausgelöst und dadurch in Wirkstellung gebracht werden kann, dadurch gekennzeichnet, dass anhand einer Sitzbelegungserkennung und der Sensorik das Fahrzeug mittels ESP (Fahrer unabhängigen) Bremseingriffen oder aktiven (Fahrer unabhängigen) Lenkeingriffen so gesteuert wird, dass die Unfallfolgen gemindert werden.Method for controlling a reversible occupant protection device in a motor vehicle with sensors, e.g. ESP sensors, which ones Vehicle condition data and a reversible occupant protection means, which is triggered before a collision time and thus in the active position can be brought, characterized in that based on a Seat occupancy detection and the sensors of the vehicle using ESP (Driver independent) Brake interventions or active (driver-independent) steering interventions controlled in this way will reduce the consequences of the accident. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass der Auftreffpunkt bzw. die Auftreffstelle aktiv so durch Fahrzeugeingriffe gesteuert wird, dass der Auftreffpunkt bzw. die Auftreffstelle an einer Stelle erfolgt, an der keine Sitzbelegung ermittelt wurde.A method according to claim 6, characterized in that the point of impact or the point of impact is active through vehicle interventions is controlled that the point of impact or the point of impact a place where no seat occupancy has been determined. Verfahren zum Ansteuern eines reversiblen Insassenschutzmittels in einem Kraftfahrzeug mit einer Sensorik, z.B. ESP Sensorik, welche Fahrzeugzustandsdaten erfasst und einem reversiblen Insassenschutzmittel, welches vor einem Kollisionszeitpunkt ausgelöst und dadurch in Wirkstellung gebracht werden kann, dadurch gekennzeichnet, dass anhand einer Sitzbelegungserkennung eine elektrische Sitzverstellung in Abhängigkeit von den ermittelten Sitzbelegungsdaten so gesteuert wird, dass Unfallfolgen gemindert werden.Method for controlling a reversible occupant protection device in a motor vehicle with sensors, e.g. ESP sensors, which ones Vehicle condition data and a reversible occupant protection means, which is triggered before a collision time and thus in the active position can be brought, characterized in that based on a Seat occupancy detection an electrical seat adjustment depending is controlled by the determined seat occupancy data so that the consequences of accidents are reduced become. Einrichtung und Verfahren gekennzeichnet durch eine Kombination der Merkmale nach mindestens zwei der vorhergehenden Ansprüche.Establishment and procedure characterized by a Combination of characteristics according to at least two of the previous ones Expectations.
DE10311132A 2003-03-12 2003-03-12 Occupant sensor for motor vehicle seat airbag uses heating wire for seat heater as sensing electrode for passenger Withdrawn DE10311132A1 (en)

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007089654A2 (en) * 2006-01-26 2007-08-09 Tk Holdings Inc. Capacitive sensing isolation using reversed biased diodes
WO2008133804A1 (en) * 2007-04-30 2008-11-06 Kohler Co. Automated seat and/or lid assembly for a toilet
DE102009059114A1 (en) * 2009-12-18 2011-06-22 Continental Automotive GmbH, 30165 Mat for use between base and seat cover of vehicle seat, has heating element and electrode, which are sewn between two non-woven fabric layers such that heating element and electrode do not contact each other
LU91792B1 (en) * 2011-02-22 2012-08-23 Iee Sarl Capacitive occupant detection system
DE102011005551A1 (en) * 2011-03-15 2012-09-20 Takata-Petri Ag Occupancy detection device for detecting an occupancy of a seat of a motor vehicle
AT507518B1 (en) * 2008-10-23 2012-11-15 Hubert Zangl DEVICE FOR DETECTING A NEAR OBJECT
DE102012217140A1 (en) * 2012-09-24 2014-06-12 Bayerische Motoren Werke Aktiengesellschaft Seat occupancy detection device
DE102012223342A1 (en) * 2012-12-17 2014-07-03 Bayerische Motoren Werke Aktiengesellschaft Device for recognizing occupancy of seat by person using seat heater in motor car, has processing unit recognizing seat occupancy based on characteristics of electric current and voltage through and at heating element
DE102013221212A1 (en) 2013-10-18 2015-04-23 Continental Teves Ag & Co. Ohg A method of detecting contact loss between a vehicle and a road
US9067518B2 (en) 2010-08-05 2015-06-30 Takata Corporation Heating system
US9114747B2 (en) 2010-08-05 2015-08-25 Takata Corporation Heating system
US9132758B2 (en) 2010-08-05 2015-09-15 Takata Corporation Heater and heating system
DE102006014061B4 (en) * 2005-03-31 2016-09-22 Denso Corporation System for detecting vehicle occupants
DE102016202415A1 (en) * 2015-11-03 2017-05-04 Volkswagen Aktiengesellschaft System and method for occupant detection in a vehicle
WO2017207273A1 (en) * 2016-06-02 2017-12-07 Robert Bosch Gmbh Safety device for a vehicle
DE112011101042B4 (en) * 2010-03-25 2020-09-17 Iee International Electronics & Engineering S.A. Combination of seat heating and capacitive occupancy sensor
DE112012000923B4 (en) * 2011-02-21 2021-06-24 Iee International Electronics & Engineering S.A. Heating element operated as a capacitive detection electrode
WO2023104506A1 (en) * 2021-12-06 2023-06-15 Marquardt Gmbh Device for heating a surface and for simultaneously detecting contact with the surface

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