DE102006002748A1 - Occupant protection system for motor vehicle, has control unit for release of occupant protection devices and sensors where sensors are connected with control unit by common optical fiber - Google Patents

Occupant protection system for motor vehicle, has control unit for release of occupant protection devices and sensors where sensors are connected with control unit by common optical fiber Download PDF

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Publication number
DE102006002748A1
DE102006002748A1 DE102006002748A DE102006002748A DE102006002748A1 DE 102006002748 A1 DE102006002748 A1 DE 102006002748A1 DE 102006002748 A DE102006002748 A DE 102006002748A DE 102006002748 A DE102006002748 A DE 102006002748A DE 102006002748 A1 DE102006002748 A1 DE 102006002748A1
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DE
Germany
Prior art keywords
sensors
control unit
occupant protection
common optical
optical fiber
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Withdrawn
Application number
DE102006002748A
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German (de)
Inventor
Thomas Dipl.-Ing. Görnig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Conti Temic Microelectronic GmbH
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Conti Temic Microelectronic GmbH
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Filing date
Publication date
Application filed by Conti Temic Microelectronic GmbH filed Critical Conti Temic Microelectronic GmbH
Priority to DE102006002748A priority Critical patent/DE102006002748A1/en
Publication of DE102006002748A1 publication Critical patent/DE102006002748A1/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Withdrawn legal-status Critical Current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
    • 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
    • B60R2021/0104—Communication circuits for data transmission
    • B60R2021/01047—Architecture
    • B60R2021/01054—Bus
    • B60R2021/01068—Bus between different sensors and airbag control unit
    • 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
    • B60R2021/0104—Communication circuits for data transmission
    • B60R2021/01081—Transmission medium
    • B60R2021/01095—Transmission medium optical

Abstract

The system has a control unit for the release of occupant protection devices and sensors. The sensors are connected with the control unit by a common optical fiber. The sensors produce optical signals of defined wavelength for the data communication. The different wavelengths are assigned to the sensors for the data communication over the common optical fiber.

Description

Die Erfindung betrifft ein Insassenschutzsystem für ein Kraftfahrzeug gemäß dem Oberbegriff von Anspruch 1. Derartige Insassenschutzsysteme weisen zumindest ein Steuergerät zur Auslösung von Insassenschutzeinrichtungen sowie Sensoren auf, wobei zumindest eines der Steuergeräte mit zumindest einer Mehrzahl der Sensoren über ein Datenübertragungssystem verbunden ist.The The invention relates to an occupant protection system for a motor vehicle according to the preamble of Claim 1. Such occupant protection systems have at least one control unit for triggering of occupant protection devices and sensors, wherein at least one of the control units with at least a majority of the sensors via a data transmission system connected is.

Bei zukünftigen Kraftfahrzeugen kommen vermehrt Systeme zum Einsatz, welche über eine Vielzahl von ausgelagerten Assistenzsensoren verfügen.at future Motor vehicles are increasingly systems used, which have a variety have outsourced assistance sensors.

1 zeigt zum Beispiel ein Airbagsteuergerät gemäß dem Stand der Technik, bei diesem ein Zentralsteuergerät (4) mit zwei (von vielen weiteren nicht gezeigten) Assistenzsensoren (2.1, 2.2) mittels elektrischen Verbindungsleitungen (2.11, 2.2.1) verbunden sind. 1 For example, an airbag control apparatus according to the prior art, in which a central control unit ( 4 ) with two assistance sensors (not shown by many others) ( 2.1 . 2.2 ) by means of electrical connection lines ( 2.11 . 2.2.1 ) are connected.

Um hier den kostenintensiven Verkabelungsaufwand zu minimieren, wird zunehmend dazu übergegangen, dass, wie in 2 gezeigt, so genannte Sensor-Cluster (2.3) zum Einsatz gelangen, welche nur mit einer elektrischen Schnittstelle (2.3.1) mit dem Zentralgerät (4) verbunden sind.In order to minimize the costly cabling effort, it is increasingly being assumed that, as in 2 shown, so-called sensor cluster ( 2.3 ) are used, which only with an electrical interface ( 2.3.1 ) with the central device ( 4 ) are connected.

Ein Nachteil an dieser Lösung ist darin zu sehen, dass die Bandbreite zur Übertragung der vielen Daten der mehreren Sensoren sehr begrenzt ist, und somit nur eine begrenzte Datenübertragung der einzelnen Sensorsignale möglich ist.One Disadvantage of this solution can be seen in the fact that the bandwidth to transfer the many data The number of sensors is very limited, and thus only a limited data transfer the individual sensor signals possible is.

Die Aufgabe der vorliegenden Erfindung ist es daher, ein Datenübertragungssystem vorzustellen, welches störunempfindlicher ist und zudem eine hohe Übertragungskapazität und geringen Verkabelungsaufwand bietet.The The object of the present invention is therefore a data transmission system to imagine which interference insensitive is and also has a high transmission capacity and low Cabling effort offers.

Diese Aufgabe wird durch die Merkmale der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen der Erfindung ergeben sind aus den Unteransprüchen, wobei auch Kombinationen und Weiterbildungen einzelner Merkmale miteinander denkbar sind.These The object is solved by the features of the independent claims. advantageous Developments of the invention will become apparent from the dependent claims, wherein also combinations and developments of individual features with each other are conceivable.

Ein wesentlicher Gedanke der Erfindung besteht darin, dass die Sensoren über einen gemeinsamen Lichtwellenleiter mit dem Steuergerät verbunden sind, die Sensoren optische Signale definierter Wellenlänge für die Datenübertragung erzeugen und den Sensoren unterschiedliche Wellenlängen für die Datenübertragung über den gemeinsamen Lichtwellenleiter zugewiesen sind.One essential idea of the invention is that the sensors have a common optical fibers are connected to the control unit, the sensors generate optical signals of defined wavelength for data transmission and the Sensors different wavelengths for data transmission over the common optical fiber are assigned.

Die Erfindung wird nun nachfolgend anhand eines Ausführungsbeispieles unter Zuhilfenahme der Figuren näher erläutert. Im Folgenden können für funktional gleiche und/oder gleiche Elemente mit den gleichen Bezugsziffern bezeichnet sein. Es zeigenThe Invention will now be described below with reference to an embodiment with the aid closer to the figures explained. In the following you can for functional same and / or same elements with the same reference numerals be designated. Show it

1: Airbagsteuergerät mit Einzelverdrahtung gemäß dem Stand der Technik. 1 : Airbag control unit with single wiring according to the prior art.

2: Airbagsteuergerät mit Sensorcluster gemäß dem Stand der Technik. 2 : Airbag control unit with sensor cluster according to the prior art.

3: Insassenschutzsystem mit einem gemeinsamen Lichtwellenleiter für mehrere Sensoren three : Occupant protection system with a common optical fiber for several sensors

Wie in 3 dargestellt, wird erfindungsgemäß vorgeschlagen, dass die Schnittstelle (2.3.1) zwischen den Assistenzsensoren (2.3) und dem Zentralsteuergerät (4) als Lichtwellenleiter-Realisierung für eine optische Signalübertragung ausgebildet wird. Die Vorteile einer solchen Lösung sind darin zu sehen, dass neben einer sehr hohen Übertragungsbandbreite auch eine hohe Störfestigkeit gegen EMV/ESD gewährleistet ist.As in three In accordance with the invention, it is proposed that the interface ( 2.3.1 ) between the assistance sensors ( 2.3 ) and the central control unit ( 4 ) is designed as an optical waveguide implementation for an optical signal transmission. The advantages of such a solution can be seen in the fact that in addition to a very high transmission bandwidth and a high immunity to EMC / ESD is guaranteed.

Das Steuergerät weist entsprechende Empfänger 2.3.5, 2.3.6, 2.3.7 auf, die die im Wellenlängenmultiplex übertragenen Daten selektiv erfassen und den jeweiligen Sensoren zugeordnet an die weitere Auswertung weitergeben.The control unit has corresponding receivers 2.3.5 . 2.3.6 . 2.3.7 on, which detect the data transmitted in the wavelength division multiplex selectively and the respective sensors assigned to the further evaluation.

Claims (1)

Insassenschutzsystem für ein Kraftfahrzeug, mit zumindest einem Steuergerät zur Auslösung von Insassenschutzeinrichtungen sowie Sensoren, wobei zumindest eines der Steuergeräte mit zumindest einer Mehrzahl der Sensoren über ein Datenübertragungssystem verbunden ist, dadurch gekennzeichnet, dass die Sensoren über einen gemeinsamen Lichtwellenleiter mit dem Steuergerät verbunden sind, die Sensoren optische Signale definierter Wellenlänge für die Datenübertragung erzeugen und den Sensoren unterschiedliche Wellenlängen für die Datenübertragung über den gemeinsamen Lichtwellenleiter zugewiesen sind.Occupant protection system for a motor vehicle, with at least one control unit for triggering occupant protection devices and sensors, wherein at least one of the control units is connected to at least a plurality of sensors via a data transmission system, characterized in that the sensors are connected via a common optical waveguide with the control unit, the Sensors generate optical signals of defined wavelength for the data transmission and the sensors are assigned different wavelengths for the data transmission via the common optical waveguide.
DE102006002748A 2006-01-20 2006-01-20 Occupant protection system for motor vehicle, has control unit for release of occupant protection devices and sensors where sensors are connected with control unit by common optical fiber Withdrawn DE102006002748A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102006002748A DE102006002748A1 (en) 2006-01-20 2006-01-20 Occupant protection system for motor vehicle, has control unit for release of occupant protection devices and sensors where sensors are connected with control unit by common optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006002748A DE102006002748A1 (en) 2006-01-20 2006-01-20 Occupant protection system for motor vehicle, has control unit for release of occupant protection devices and sensors where sensors are connected with control unit by common optical fiber

Publications (1)

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DE102006002748A1 true DE102006002748A1 (en) 2007-07-26

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DE102006002748A Withdrawn DE102006002748A1 (en) 2006-01-20 2006-01-20 Occupant protection system for motor vehicle, has control unit for release of occupant protection devices and sensors where sensors are connected with control unit by common optical fiber

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107272164A (en) * 2016-03-30 2017-10-20 德尔福技术有限公司 For the multipurpose camera apparatus used on vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3811217C2 (en) * 1988-04-02 1991-09-26 Robert Bosch Gmbh, 7000 Stuttgart, De
DE19944967C2 (en) * 1999-09-14 2002-01-24 Brose Fahrzeugteile Transmission system for data and control signals in a motor vehicle
DE10321679A1 (en) * 2003-05-14 2004-12-09 Siemens Ag Method and device for transmitting data between a central control unit of an occupant protection system in a vehicle and at least one decentralized sensor unit
DE10328976A1 (en) * 2003-06-27 2005-01-13 Robert Bosch Gmbh Method and device for controlling an occupant protection device in a vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3811217C2 (en) * 1988-04-02 1991-09-26 Robert Bosch Gmbh, 7000 Stuttgart, De
DE19944967C2 (en) * 1999-09-14 2002-01-24 Brose Fahrzeugteile Transmission system for data and control signals in a motor vehicle
DE10321679A1 (en) * 2003-05-14 2004-12-09 Siemens Ag Method and device for transmitting data between a central control unit of an occupant protection system in a vehicle and at least one decentralized sensor unit
DE10328976A1 (en) * 2003-06-27 2005-01-13 Robert Bosch Gmbh Method and device for controlling an occupant protection device in a vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107272164A (en) * 2016-03-30 2017-10-20 德尔福技术有限公司 For the multipurpose camera apparatus used on vehicle

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OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
R005 Application deemed withdrawn due to failure to request examination

Effective date: 20130122