EP1853467A1 - System zur überprüfung der funktionsfähigkeit einer sensoreinrichtung - Google Patents
System zur überprüfung der funktionsfähigkeit einer sensoreinrichtungInfo
- Publication number
- EP1853467A1 EP1853467A1 EP06708179A EP06708179A EP1853467A1 EP 1853467 A1 EP1853467 A1 EP 1853467A1 EP 06708179 A EP06708179 A EP 06708179A EP 06708179 A EP06708179 A EP 06708179A EP 1853467 A1 EP1853467 A1 EP 1853467A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor device
- sensor
- sensor elements
- evaluation
- functionality
- 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- Withdrawn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
-
- 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
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R21/38—Protecting non-occupants of a vehicle, e.g. pedestrians using means for lifting bonnets
-
- 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
- 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
- B60R21/0134—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 responsive to imminent contact with an obstacle, e.g. using radar systems
-
- 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
- B60R2021/01122—Prevention of malfunction
- B60R2021/01184—Fault detection or diagnostic circuits
-
- 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
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
Definitions
- a pedestrian protection system In the field of protective systems in motor vehicles, the introduction of a pedestrian protection system has been discussed for some time in addition to occupant protection. Such a system is intended to detect whether there is a collision of the vehicle with a pedestrian and, if appropriate, suitable protective mechanisms should be activated.
- Such protective mechanisms may be, for example, airbags on the bonnet or on the A-pillars of the vehicle or a positioning of the bonnet by a few centimeters, in order to soften the impact of the pedestrian's head on the bonnet.
- DE 100 30 465 A1 proposes to provide sensors on the bumper and on the bonnet of the vehicle, which sensors can detect a typical pedestrian impact in terms of their time sequence.
- Sensors are there strain gauges or piezoresistive films but also optical sensors having a pressure-dependent light transmission, proposed.
- another decision criterion is formed by determining the speed and / or acceleration changes of the vehicle caused by an impact, and then comparing these speed and / or acceleration changes with reference variables which typical of a pedestrian impact.
- the sensors of this pedestrian impact device - both the optical sensors and the acceleration sensors - are connected with their data lines directly to the central control unit, so that a high cabling is required, which is in fact still greater due to the requirement of supply voltage lines for the individual sensors.
- the use of two sensors ren to increase reliability consuming and therefore expensive.
- the invention is therefore based on the object, a system with a sensor device formed with at least one sensor element, which is connected to an evaluation unit for generating a signal indicating an impact, indicate that can be checked in a simple manner on the functioning of the sensor device.
- a second evaluation unit synchronized with the first evaluation unit is provided in such a way that the sensor unit can be controlled by the two evaluation units in time division multiplex mode.
- the functionality of the sensor device can be checked in a simple manner and in an advantageous embodiment of the invention in case of lack of functionality of the sensor device to a connected to the evaluation central control unit an error signal are transmitted, which blocks the triggering of a pedestrian protection.
- each sensor element can be checked separately. In the event that a sensor element is defective, the system can continue to be operated with the remaining functional sensor elements in an emergency operation, wherein in development of the invention, each non-functional sensor element is individually deactivated.
- the transmission of the error signal by modulation of the current on a supply Voltage line between the evaluation and the central control unit to accomplish.
- a data transmission line can be saved.
- the individual sensor elements can be interrogated one after the other.
- individual defective sensor elements can be identified and thus individually deactivated.
- Figure 1 is a schematic representation of an inventive
- Figure 2 is a schematic representation of the temporal sequence of sensor device queries.
- FIG. 1 shows a sensor device 1, which in the example shown is formed with four sensor elements 2.
- the sensor device is connected on the one hand by means of four lines to a first evaluation unit 3 and on the other hand by means of likewise four lines to a second evaluation unit 4. It is connected as each sensor element 2 with its own line to both the first and the second evaluation unit 3, 4.
- the first evaluation unit 3 can check the functionality of the sensor elements 2 of the sensor device 1, but can also determine by evaluating the signals of the sensor elements 2 whether a force has taken place, for example, due to the impact on the bumper of a vehicle in which the sensor device 1 is arranged ,
- the sensor elements 2 of the sensor device 1 can be formed with any type of pressure-sensitive sensors, where in a particularly advantageous manner, a fiber optic sensor is used whose optical conductivity changes by the action of a force, so that it can be determined by measuring the light intensity in the first evaluation unit 3, whether the optical fiber has been deformed.
- the first evaluation unit 3 can be advantageously formed with a microprocessor.
- the second evaluation unit 4 is only intended to check the functionality of the sensor elements 2 of the sensor device 1 and can therefore be made simpler. However, it is also possible to use a microprocessor for this as well. A check of the functionality of the sensor elements 3 of the sensor device 1 can be effected, for example, by the fact that in the case of the use of optical fibers as sensor elements 2 it is checked whether the received light intensity corresponds to an expected light intensity.
- the first evaluation unit 3 and the second evaluation unit 4 deliver according to their evaluation of the signals of the sensor device 1 output signals to a central control unit 5.
- This is connected via a supply voltage line 8 with the two evaluation units 3, 4, whereby this with a supply voltage be supplied.
- the output signals of the two evaluation units 3 and 4 are linked together, which is indicated by a logic gate 6, whereby the triggering of a pedestrian protection means 7, which in the illustrated embodiment as hinged Bonnet is shown, in the presence of a lack of functionality of the sensor device 1 can be disabled.
- each individual sensor element 2 can be determined and, if only a few sensor elements Mente 2 are recognized as defective, an emergency operation with the remaining sensor elements 2 are maintained. Accordingly, the processing of the signals of the first evaluation device 3 due to the defective sensor elements 2 in the central control unit 5 can be prevented.
- the signal of the second evaluation unit 4 may alternatively by modulation of
- the modulation can be performed in the second evaluation unit 4 by charging the supply voltage line 8 with a variable resistor, for example the load path of a
- both evaluation units 3, 4 are connected to the sensor elements 2 of the sensor device 1, the interrogation of the sensor elements 2 takes place according to the invention in time division multiplex mode, which is shown schematically in FIG.
- a sensor value is measured by the first evaluation unit 3.
- the sensor is then checked for correct operation by the second evaluation unit 4. This process can be repeated periodically in an advantageous manner.
- the sensor elements 2 can all be queried simultaneously or, as shown in the example of FIG. 2, in successive time slots.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Traffic Control Systems (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005009102A DE102005009102B4 (de) | 2005-02-28 | 2005-02-28 | System zur Überprüfung der Funktionsfähigkeit einer Sensoreinrichtung |
| PCT/EP2006/050836 WO2006092357A1 (de) | 2005-02-28 | 2006-02-10 | System zur überprüfung der funktionsfähigkeit einer sensoreinrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1853467A1 true EP1853467A1 (de) | 2007-11-14 |
Family
ID=36201376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06708179A Withdrawn EP1853467A1 (de) | 2005-02-28 | 2006-02-10 | System zur überprüfung der funktionsfähigkeit einer sensoreinrichtung |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20070277584A1 (de) |
| EP (1) | EP1853467A1 (de) |
| JP (1) | JP2008513278A (de) |
| KR (1) | KR20070088530A (de) |
| CN (1) | CN100475616C (de) |
| DE (1) | DE102005009102B4 (de) |
| WO (1) | WO2006092357A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8166795B2 (en) * | 2009-11-30 | 2012-05-01 | Eaton Corporation | Out-of-range sensor recalibration |
| DE102011080511A1 (de) * | 2011-08-05 | 2013-02-07 | Robert Bosch Gmbh | Schaltungsanordnung und Verfahren zur Plausibilisierung von Sensorsignalen |
| US9568407B2 (en) * | 2014-05-05 | 2017-02-14 | Sonam Technologies, Llc | Apparatus, system and methods for determining the impact attenuation of a surface |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3921129A (en) * | 1971-05-10 | 1975-11-18 | Toyo Kogyo Co | Malfunction preventive system for use in an air bag incorporating a sensor for detecting the collision speed of a vehicle |
| DE3811217A1 (de) * | 1988-04-02 | 1989-10-12 | Bosch Gmbh Robert | Elektronische einrichtung |
| US5253510A (en) * | 1989-06-22 | 1993-10-19 | I C Sensors | Self-testable micro-accelerometer |
| JPH03109163A (ja) * | 1989-09-21 | 1991-05-09 | Sumitomo Electric Ind Ltd | 加速度センサの故障検出装置 |
| EP0491095B1 (de) * | 1990-12-17 | 1996-02-28 | UNITED TECHNOLOGIES AUTOMOTIVE, Inc. | Einleiter-Kraftfahrzeug-Multiplex-Anlage, die zufällig reflektierte Infrarote Wellen benutzt |
| JPH05238348A (ja) * | 1991-03-13 | 1993-09-17 | Zexel Corp | 車両安全装置の制御システム |
| CN2158603Y (zh) * | 1993-05-28 | 1994-03-09 | 杨林 | 列车专用载波电话 |
| US5543776A (en) * | 1993-10-19 | 1996-08-06 | Whistler Corporation | Vehicle security system |
| DE4439886A1 (de) * | 1994-03-12 | 1995-09-14 | Bosch Gmbh Robert | Elektronisches Gerät mit einem beschleunigungsempfindlichen Sensor |
| JP3246833B2 (ja) * | 1994-07-08 | 2002-01-15 | 株式会社日立製作所 | 自動車制御装置及び自動車制御方法 |
| DE19740021A1 (de) * | 1997-09-11 | 1999-03-25 | Siemens Ag | Einrichtung für den Insassenschutz in einem Kraftfahrzeug |
| US6169479B1 (en) * | 1998-10-23 | 2001-01-02 | Visteon Global Technologies, Inc. | Vehicular deformation sensor system |
| DE19909297B4 (de) * | 1999-03-03 | 2004-11-18 | Siemens Ag | Steuersystem für ein Insassenschutzsystem |
| DE10030465A1 (de) * | 2000-06-21 | 2002-01-03 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Erkennen eines Fußgängeraufpralls |
| KR100555600B1 (ko) * | 2000-08-22 | 2006-03-03 | 지멘스 악티엔게젤샤프트 | 자동차 탑승자 보호 시스템에 대한 제어 회로 및 그 동작 방법 |
| DE10057916C2 (de) * | 2000-11-21 | 2003-04-17 | Bosch Gmbh Robert | Steuergerät für ein Rückhaltesystem in einem Kraftfahrzeug |
| EP1467897B1 (de) * | 2002-01-23 | 2005-08-10 | Siemens VDO Automotive Corporation | Verfahren und vorrichtung zur bestimmung der entfaltung einer sicherheitsrückhaltevorrichtung in einem insassenrückhaltesystem |
| DE10237160A1 (de) * | 2002-08-14 | 2004-02-26 | Robert Bosch Gmbh | Vorrichtung zur Aufprallsensierung mit wenigstens zwei Drucksensoren |
| DE10321678A1 (de) * | 2003-05-14 | 2004-12-09 | Siemens Ag | Verfahren und Vorrichtungen zur Übertragung von Daten auf einer Datenleitung zwischen einem zentralen Steuergerät und mindestens einer Datenverarbeitungsgeräteschnittstelle mindestens eines dezentralen Datenverarbeitungsgeräts |
| ES2228262B1 (es) * | 2003-06-20 | 2006-02-16 | Sistemas Integrados Para La Automocion, S.L. | Sistema de cableado digital para vehiculos. |
-
2005
- 2005-02-28 DE DE102005009102A patent/DE102005009102B4/de not_active Expired - Fee Related
-
2006
- 2006-02-10 KR KR1020077006431A patent/KR20070088530A/ko not_active Abandoned
- 2006-02-10 EP EP06708179A patent/EP1853467A1/de not_active Withdrawn
- 2006-02-10 WO PCT/EP2006/050836 patent/WO2006092357A1/de not_active Ceased
- 2006-02-10 JP JP2007531772A patent/JP2008513278A/ja not_active Withdrawn
- 2006-02-10 US US11/663,256 patent/US20070277584A1/en not_active Abandoned
- 2006-02-10 CN CNB2006800008859A patent/CN100475616C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006092357A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070277584A1 (en) | 2007-12-06 |
| KR20070088530A (ko) | 2007-08-29 |
| DE102005009102A1 (de) | 2006-09-14 |
| CN100475616C (zh) | 2009-04-08 |
| JP2008513278A (ja) | 2008-05-01 |
| WO2006092357A1 (de) | 2006-09-08 |
| CN101031458A (zh) | 2007-09-05 |
| DE102005009102B4 (de) | 2009-12-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20070228 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONTINENTAL AUTOMOTIVE GMBH |
|
| 17Q | First examination report despatched |
Effective date: 20080505 |
|
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20090608 |