DE29521450U1 - Airbag system - Google Patents
Airbag systemInfo
- Publication number
- DE29521450U1 DE29521450U1 DE29521450U DE29521450U DE29521450U1 DE 29521450 U1 DE29521450 U1 DE 29521450U1 DE 29521450 U DE29521450 U DE 29521450U DE 29521450 U DE29521450 U DE 29521450U DE 29521450 U1 DE29521450 U1 DE 29521450U1
- Authority
- DE
- Germany
- Prior art keywords
- sensor
- airbag system
- airbag
- control unit
- output signal
- 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.)
- Expired - Lifetime
Links
- 244000309464 bull Species 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Air Bags (AREA)
Description
R. 29809
19.12.95 Be/JäR. 29809
19.12.95 Be/Jä
ROBERT BOSCH GMBH, 70442 StuttgartROBERT BOSCH GMBH, 70442 Stuttgart
Stand der TechnikState of the art
Die Erfindung geht aus von einem Airbagsystem nach der Gattung des Anspruchs 1. Ein derartiges Airbagsystem ist beispielsweise aus der Zeitschrift 1141 Ingenieurs de I1Automobile (1982) No. 6, Seite 69 ff bekannt. Aus der US 5,449,198 A der Anmelderin ist weiter ein Airbagsystem mit zwei Sensoren sowie analogen und digitalen Schaltungsmitteln für die Auswertung der Sensorsignale bekannt. Auch aus EP 0 434 679 Bl der Anmelderin ist weiter ein Airbagsystem mit zwei Sensoren und Schaltungsmitteln für die Auswertung der Sensorsignale bekannt, bei dem das Ausgangssignal eines ersten Sensors die Auswertung des Ausgangssignales des zweiten Sensors beeinflußt. Weiterhin ist aus DE 37 29 020 C2 eine Sensorschaltung für Kraftfahrzeug-Insassen-Rückhaltesysteme bekannt, die- mindestens zwei Sensoren umfaßt, wobei jedem dieser Sensoren 0 mindestens ein als Auslösepfad bezeichnete Auswertungsschaltung zugeordnet ist.The invention is based on an airbag system according to the preamble of claim 1. Such an airbag system is known, for example, from the magazine 1141 Ingenieurs de I 1 Automobile (1982) No. 6, page 69 ff. From US 5,449,198 A of the applicant, an airbag system with two sensors and analog and digital circuit means for evaluating the sensor signals is also known. From EP 0 434 679 B1 of the applicant, an airbag system with two sensors and circuit means for evaluating the sensor signals is also known, in which the output signal of a first sensor influences the evaluation of the output signal of the second sensor. Furthermore, from DE 37 29 020 C2, a sensor circuit for motor vehicle occupant restraint systems is known, which comprises at least two sensors, each of these sensors being assigned at least one evaluation circuit referred to as a trigger path.
Vorteile der ErfindungAdvantages of the invention
Ein Airbagsystem mit den Merkmalen des Anspruchs 1 bietet insbesondere den Vorteil einer gesteigerten Betriebssicherheit, da ein als SicherheitsschalterAn airbag system with the features of claim 1 offers the particular advantage of increased operational safety, since a safety switch
• · S · « **&idigr; &igr; • · S · « **&idigr;&igr;
vorgesehener Sensor nicht den hohen Zündstrom für eine Zündpille führen muß. Daraus ergeben sich weiterhin Vorteile hinsichtlich einer verringerten Baugröße, gesteigerter Zuverlässigkeit, einer erleichterten Wiederverwendbarkeit, eines reduzierten Preises.The sensor provided does not have to carry the high ignition current for a squib. This results in further advantages in terms of reduced size, increased reliability, easier reusability, and reduced price.
Zeichnungdrawing
Die Erfindung wird nachfolgend unter Bezug auf die Zeichnung näher erläutert. Dabei zeigt Figur 1 ein vereinfachtes Blockdiagramm eines Airbagsystems, Figur 2 ein detailliertes Blockschaltbild eines Airbagsystems mit einem Sensor als Sicherheitsschalter.The invention is explained in more detail below with reference to the drawing. Figure 1 shows a simplified block diagram of an airbag system, Figure 2 shows a detailed block diagram of an airbag system with a sensor as a safety switch.
Beschreibung der ErfindungDescription of the invention
Ein Airbagsystem 1 umfaßt nach Figur 1 mindestens einen für Beschleunigungen empfindlichen Sensor 10, ein Steuergerät und mindestens einen Airbag 30. Das Steuergerät 20 wertet das Ausgangssignal des Sensors 10 aus und steuert bei Gefahr den Airbag 3 0 an, der sich zum Schutz eines Fahrzeuginsassen aufbläht.According to Figure 1, an airbag system 1 comprises at least one sensor 10 sensitive to acceleration, a control unit and at least one airbag 30. The control unit 20 evaluates the output signal of the sensor 10 and, in the event of danger, controls the airbag 30, which inflates to protect a vehicle occupant.
Bei dem in Figur 2 dargestellten Ausführungsbeispiel der Erfindung sind zwei Sensoren 10a, 10b vorgesehen, die mit dem Steuergerät 20 verbunden sind. Mit dem Steuergerät 20 sind, zwei Endstufen 31a, 31b verbunden. Die Endstufen 31a, 31b steuern zwei Zündkreise 32a, 32b an, in denen je eine Zündpille 33, 33b angeordnet ist. Jede Zündpille 33a, 33b 0 steht in Wirkverbindung mit mindestens einem Airbag 3 0a, 3 0b. Das Steuergerät 20 trifft seine Entscheidung für die Zündung des Airbags 3 0a, 3 0b anhand des analogen Ausgangssignals des Sensors 10a. Als Sicherungsschalter ist ein zweiter Sensor 10b mit folgenden Eigenschaften vorgesehen:In the embodiment of the invention shown in Figure 2, two sensors 10a, 10b are provided, which are connected to the control unit 20. Two output stages 31a, 31b are connected to the control unit 20. The output stages 31a, 31b control two ignition circuits 32a, 32b, in each of which a squib 33, 33b is arranged. Each squib 33a, 33b is operatively connected to at least one airbag 30a, 30b. The control unit 20 makes its decision to ignite the airbag 30a, 30b based on the analog output signal of the sensor 10a. A second sensor 10b with the following properties is provided as a safety switch:
• er ist nicht in einem der Zündkreise angeordnet;• it is not located in one of the ignition circuits;
• er liefert ein digitales Ausgangssignal;• it provides a digital output signal;
• er spricht auf positive und negative Beschleunigungen an,• it responds to positive and negative accelerations,
• er liefert bereits bei Beschleunigungswerten unterhalb
einer vorgebbaren Auslöseschwelle ein Ausgangssignal,• it delivers at acceleration values below
a predeterminable trigger threshold an output signal,
• er beruht auf gleicher oder unterschiedlicher Technologie wie der Sensor 10a,• it is based on the same or different technology as the sensor 10a,
er ist baulich mit dem Sensor 10a vereinigt oder getrennt von diesem angeordnet.It is structurally combined with the sensor 10a or arranged separately from it.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29521450U DE29521450U1 (en) | 1995-12-21 | 1995-12-21 | Airbag system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19547843 | 1995-12-21 | ||
| DE29521450U DE29521450U1 (en) | 1995-12-21 | 1995-12-21 | Airbag system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29521450U1 true DE29521450U1 (en) | 1997-04-24 |
Family
ID=26021501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29521450U Expired - Lifetime DE29521450U1 (en) | 1995-12-21 | 1995-12-21 | Airbag system |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE29521450U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7273229B2 (en) | 2003-02-14 | 2007-09-25 | Denso Corporation | Apparatus for driving on-vehicle occupant-protecting airbag device |
-
1995
- 1995-12-21 DE DE29521450U patent/DE29521450U1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7273229B2 (en) | 2003-02-14 | 2007-09-25 | Denso Corporation | Apparatus for driving on-vehicle occupant-protecting airbag device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 19970605 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 19990429 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20020319 |
|
| R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20040505 |
|
| R071 | Expiry of right |