DE4033765A1 - Acceleration sensor triggering airbag in vehicle - has spring-mounted plate reflecting light or sound from transmitters on either side to corresp. receivers - Google Patents
Acceleration sensor triggering airbag in vehicle - has spring-mounted plate reflecting light or sound from transmitters on either side to corresp. receiversInfo
- Publication number
- DE4033765A1 DE4033765A1 DE19904033765 DE4033765A DE4033765A1 DE 4033765 A1 DE4033765 A1 DE 4033765A1 DE 19904033765 DE19904033765 DE 19904033765 DE 4033765 A DE4033765 A DE 4033765A DE 4033765 A1 DE4033765 A1 DE 4033765A1
- Authority
- DE
- Germany
- Prior art keywords
- transmitter
- sensor according
- plate
- sound
- receiver
- 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- Withdrawn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
-
- 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
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
- B60G17/01908—Acceleration or inclination sensors
-
- 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
- G01P15/093—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 by photoelectric pick-up
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/10—Acceleration; Deceleration
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Sensor zur Messung von Beschleunigungen mit einem im wesentlichen eindimensional auslenkbaren in einem Gehäuse federnd gelagerten Masseteil und einer berührungslos arbeitenden Abstands-Meßeinrich tung mit Sender und Empfänger.The invention relates to a sensor for measuring Accelerations with an essentially one-dimensional deflectable mass part mounted in a housing and a non-contact distance measuring device device with transmitter and receiver.
Derartige Sensoren werden in Kraftfahrzeugen zur Erzeugung eines Signals für die Auslösung des Airbags, die Aktivie rung des Gurtstrammersystems oder die Erfassung von Beschleunigungswerten für die Fahrwerksregelung eingesetzt. Sie müssen in einem weiten Temperaturbereich uneinge schränkt funktionsfähig sein und dürfen über einen langen Zeitraum ihre Betriebssicherheit nicht verlieren. Außerdem sollten Sie möglichst einfach und preisgünstig sein.Such sensors are used in motor vehicles for production a signal for the deployment of the airbag, the activation belt tensioner system or the detection of Acceleration values used for the chassis control. They have to be unique over a wide temperature range limited functionality and allowed over a long Do not lose operational reliability for a period of Furthermore you should be as simple and inexpensive as possible.
Aus der DE-OS 35 38 766 ist ein Sensor für das genannte Anwendungsgebiet bekannt. Das Sensorelement ist in Form eines Biegeschwingers mit oder ohne zusätzliche Massenkopp lung ausgebildet, dessen beschleunigungsbedingte mechani sche Verformung von einem berührungslos arbeitenden Abstandsmeßverfahren festgestellt und als elektrisches Signal ausgegeben wird. Dabei sind zwei Sensoren so ange ordnet, daß die Summe ihrer Ausgangssignale der doppelten Linearbeschleunigung entspricht und ihre Differenz ein Maß für die Drehbeschleunigung ist.DE-OS 35 38 766 is a sensor for the above Application area known. The sensor element is in shape of a bending vibrator with or without additional mass coupling lung trained, the acceleration-related mechani deformation of a non-contact person Distance measuring method determined and as electrical Signal is output. There are two sensors orders that the sum of their output signals is double Linear acceleration corresponds and its difference is a measure for the spin.
Dieser bekannte Beschleunigungsaufnehmer hat den Nachteil, daß man ein nichtlineares Signal erhält, bei dem nicht erkannt werden kann, ob bei einer Signaldifferenz eine Drehbeschleunigung vorliegt oder ob eine alterungsbedingte Veränderung der Sensordaten oder des mechanischen Aufbaus eingetreten ist.This known accelerometer has the disadvantage that you get a nonlinear signal that doesn't can be recognized whether a signal difference Spin is present or whether it is due to aging Change the sensor data or the mechanical structure has occurred.
Es besteht somit die Aufgabe, einen Sensor vorzuschlagen, der die geschilderten Nachteile nicht aufweist und allen oben angegebenen Anforderungen entspricht.There is therefore the task of proposing a sensor who does not have the disadvantages described and all above requirements.
Zur Lösung dieser Aufgabe wird für den Sensor der eingangs genannten Art vorgeschlagen, daß das Masseteil aus einem senkrecht zur Meßrichtung angeordneten, reflektierenden Plättchen besteht und daß im Gehäuse zwei Sender-Empfänger- Einheiten so angeordnet sind, daß die von den Sendern aus gehenden Strahlen von der Vorder- und Rückseite des Plätt chens in die zugehörigen Empfänger reflektiert werden.To solve this task, the input for the sensor mentioned type proposed that the mass part from a reflective arranged perpendicular to the measuring direction There is plate and that in the housing two transmitter-receiver Units are arranged so that from the transmitters rays emanating from the front and back of the plate chens are reflected in the associated receiver.
Der erfindungsgemäße Sensor genügt allen geforderten Bedin gungen und hat darüber hinaus den Vorteil, daß er mit ver gleichsweise geringem Aufwand herstellbar ist. Außerdem ist in Folge der doppelten Abstandsmessung mit umgekehrtem Vor zeichen einerseits sehr leicht ein Null-Abgleich des Sen sors möglich und andererseits wird ein Ausgangssignal erzeugt, das der doppelten Auslenkung des Masseteils ent spricht. Die gewählte Anordnung ermöglicht auch eine selb ständige Temperaturkorrektur sowie eine Nachkalibrierung mit der Maßgabe, daß die Summe der beiden Signale konstant bleiben muß. The sensor according to the invention meets all required conditions gung and has the additional advantage that he ver equally easy to manufacture. Besides, is as a result of the double distance measurement with the opposite forward sign on the one hand very easily a zero adjustment of the Sen sors possible and on the other hand an output signal generated that ent the double deflection of the mass part speaks. The chosen arrangement also allows the same constant temperature correction and recalibration with the proviso that the sum of the two signals is constant must stay.
Vorteilhafte Ausgestaltungen des Erfindungsgedankens sind in den Unteransprüchen 2 bis 12 beschrieben.Advantageous refinements of the inventive concept are described in subclaims 2 to 12.
Weitere Einzelheiten und Vorteile werden anhand der in den Fig. 1 bis 3 dargestellten Ausführungsbeispielen näher erläutert.Further details and advantages are explained in more detail with reference to the exemplary embodiments shown in FIGS. 1 to 3.
Fig. 1 zeigt einen erfindungsgemäßen Sensor im Schnitt. Fig. 1 shows a sensor according to the invention in section.
Fig. 2 zeigt eine erste Ausführungsform des Masseteils. Fig. 2 shows a first embodiment of the mass part.
Fig. 3 zeigt eine zweite Ausführungsform des Masseteils. Fig. 3 shows a second embodiment of the mass part.
In Fig. 1 ist eine Ausführungsform des Erfindungsgedankens in stark vereinfachter Form dargestellt. In einem Gehäuse 3 ist ein Plättchen 1 unter Zwischenschaltung von biegewei chen Bereichen 2 randseitig eingespannt. Außerdem sind zwei Sender 4a und zwei Empfänger 4b vorgesehen, die im Gehäuse 3 so angeordnet sind, daß die von den Sendern 4a ausgehen den Strahlen von der Vorder- und Rückseite des Plättchens 1 in die Empfänger 4b reflektiert werden. Mit 11 ist die Richtung angezeigt, in der der Sensor Beschleunigungen mes sen kann. Von anders gerichteten Beschleunigungen werden nur die in die Richtung der Pfeile 11 fallenden Anteile von Beschleunigungskräften erfaßt. Die Sender 4a werden über eine Spannungsquelle 10 mit Energie versorgt, während über die Anschlüsse S1 und S2 die der jeweiligen Beschleunigung entsprechenden elektrischen Signale der linken bzw. rechten Sender-Empfänger-Einheit einer nicht dargestellten Auswert- Einheit zugeführt werden.In Fig. 1, an embodiment of the inventive concept is shown in greatly simplified form. In a housing 3 , a plate 1 is clamped on the edge side with the interposition of bending areas 2 . In addition, two transmitters 4 a and two receivers 4 b are provided, which are arranged in the housing 3 so that the rays emanating from the transmitters 4 a are reflected from the front and rear of the plate 1 into the receiver 4 b. 11 shows the direction in which the sensor can measure accelerations. From accelerations directed differently, only the proportions of acceleration forces falling in the direction of the arrows 11 are detected. The transmitters 4 a are supplied with energy via a voltage source 10 , while the electrical signals corresponding to the respective acceleration of the left and right transmitter / receiver unit are fed to an evaluation unit (not shown) via the connections S 1 and S 2 .
In Fig. 2 ist eine Membran 5 dargestellt, bei der Schlitze 6 angebracht und Stege 7 ausgebildet sind, die das zentral angeordnete Plättchen 1 biegeweich mit dem Rand 9 verbin den. Die Membran 5 gemäß Fig. 3 unterscheidet sich von der nach Fig. 2 nur durch eine andere Führung der Schlitze 6 und eine andere Anordnung der Stege 7.In Fig. 2, a membrane 5 is shown, in which slots 6 are made and webs 7 are formed which connect the centrally arranged plate 1 to the edge 9 in a manner which is flexible. The membrane 5 according to FIG. 3 differs from that according to FIG. 2 only by a different guidance of the slots 6 and a different arrangement of the webs 7 .
Claims (12)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19904033765 DE4033765A1 (en) | 1990-10-24 | 1990-10-24 | Acceleration sensor triggering airbag in vehicle - has spring-mounted plate reflecting light or sound from transmitters on either side to corresp. receivers |
US08/077,157 US5385048A (en) | 1990-10-14 | 1993-06-14 | Acceleration sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19904033765 DE4033765A1 (en) | 1990-10-24 | 1990-10-24 | Acceleration sensor triggering airbag in vehicle - has spring-mounted plate reflecting light or sound from transmitters on either side to corresp. receivers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4033765A1 true DE4033765A1 (en) | 1992-04-30 |
Family
ID=6416929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19904033765 Withdrawn DE4033765A1 (en) | 1990-10-14 | 1990-10-24 | Acceleration sensor triggering airbag in vehicle - has spring-mounted plate reflecting light or sound from transmitters on either side to corresp. receivers |
Country Status (1)
Country | Link |
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DE (1) | DE4033765A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10534010B2 (en) * | 2014-06-20 | 2020-01-14 | Myfox | Energy-efficient home-automation device and method for tracking the displacement of a monitored object |
CN114486285A (en) * | 2022-01-07 | 2022-05-13 | 浙江吉利控股集团有限公司 | Method and device for detecting installation direction of airbag controller, vehicle and storage medium |
-
1990
- 1990-10-24 DE DE19904033765 patent/DE4033765A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10534010B2 (en) * | 2014-06-20 | 2020-01-14 | Myfox | Energy-efficient home-automation device and method for tracking the displacement of a monitored object |
CN114486285A (en) * | 2022-01-07 | 2022-05-13 | 浙江吉利控股集团有限公司 | Method and device for detecting installation direction of airbag controller, vehicle and storage medium |
CN114486285B (en) * | 2022-01-07 | 2023-11-14 | 浙江吉利控股集团有限公司 | Method and device for detecting installation direction of airbag controller, vehicle and storage medium |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: MANNESMANN VDO AG, 60326 FRANKFURT, DE |
|
8139 | Disposal/non-payment of the annual fee |