WO2005000636A1 - Procede pour surveiller le bon fonctionnement d'un appareil de commande et dispositif de diagnostic - Google Patents

Procede pour surveiller le bon fonctionnement d'un appareil de commande et dispositif de diagnostic Download PDF

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Publication number
WO2005000636A1
WO2005000636A1 PCT/DE2004/001307 DE2004001307W WO2005000636A1 WO 2005000636 A1 WO2005000636 A1 WO 2005000636A1 DE 2004001307 W DE2004001307 W DE 2004001307W WO 2005000636 A1 WO2005000636 A1 WO 2005000636A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
impact
threshold value
control unit
value
Prior art date
Application number
PCT/DE2004/001307
Other languages
German (de)
English (en)
Inventor
Bernhard Mattes
Hans-Peter Strumpp
Werner Nitschke
Hartmut Schumacher
Walter Wottreng
Hans Guettler
Rainer Moritz
Thomas Herrmann
Frank-Juergen Stuetzler
Knut Balzer
Thomas Lich
Ulrike Groeger
Alfred Kuttenberger
Lothar Groesch
Michael Schmid
Mario Kroeninger
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2005000636A1 publication Critical patent/WO2005000636A1/fr

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
    • B60R21/01—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
    • B60R21/0132—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 vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • 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
    • 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
    • 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
    • B60R21/01558—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 monitoring crash strength
    • B60R21/0156—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 monitoring crash strength by deceleration
    • 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
    • B60R21/01558—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 monitoring crash strength
    • B60R21/01562—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 monitoring crash strength by speed
    • 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

Definitions

  • the invention relates to a method for monitoring the functionality of a control device and / or at least one sensor of a safety device for protecting vehicle occupants, and a diagnostic device.
  • Safety devices to protect vehicle occupants e.g. Front and side airbags, roll bars, belt tensioners, etc. are standard equipment in today's vehicles.
  • Such safety devices typically consist of a multiplicity of sensors for detecting a crash by recording a negative acceleration or speed caused by the crash and a control device for the safety device which evaluates a value derived from the crash. If a certain threshold value, which indicates the presence of a crash, is detected, then the corresponding restraint means are triggered by the control unit.
  • crash sensors e.g. acceleration sensors, deformation sensors
  • the corresponding control unit function constantly without errors. If the functionality of a crash sensor or a control unit is disturbed, this must be signaled immediately so that the necessary repair or replacement measures can be carried out.
  • Extraordinary operational safety is required for safety-related electronic devices that are entrusted with the life of vehicle occupants in the event of danger.
  • This high loading Driving safety can practically only be guaranteed if all components of the safety device can be checked for their functionality.
  • the acceleration sensor to be checked for its functionality is subjected to a test signal.
  • the response signal output by the acceleration sensor in response to the test signal is then used as a measure for checking the functionality of the acceleration sensor.
  • This function tests of the acceleration sensor are continually during normal operation of the safety device, - For Example mecanic- starting the motor vehicle, made " ⁇ .
  • Control devices for safety devices to protect vehicle occupants and their outsourced sensors always run the risk of being damaged by an accident.
  • the type of damage usually depends on the severity of the impact. If the impact and thus the deformation are so great that the point at which the control device or the corresponding sensors are fastened is deformed, the control device or the sensors may also have been damaged by the impact. This damage can be so great that the control unit or the sensors are no longer functional. In this case, these devices would have to be replaced. Despite an impact and a resulting deformation, the control unit and individual sensors can still be functional, so that they do not necessarily have to be replaced. In addition, there is also the constellation that the control unit or the sensors were slightly damaged by the impact, but are initially still fully functional. However, there is a risk that these devices will lose their functionality over time, for example due to mechanical influences such as vibrations, temperature or penetration of moisture, or in the event of another accident. In this case, however, these devices should have been replaced after the original impact.
  • control devices for safety devices in particular airbag control devices, are typically replaced after one to five crashes in which the control device has triggered at least one restraint device.
  • crash sensors there are often no regulations as to whether and if so under what circumstances they should be replaced in the event of a crash.
  • the invention solves the problems of the prior art by a method with the features of claim 1 and a diagnostic device with the features of claim 7.
  • control device or a comparable device itself decides whether the control device should be replaced as a result of an impact (crash). Additionally or alternatively, the control device or a comparable device can also decide whether and if so which sensors have to be replaced in the event of a crash. In this way, the repair costs arising as a result of a crash can be minimized since only non-fully functional control devices or sensors are replaced, whereas the functional devices can still be used. To this
  • Another advantage of the method according to the invention is that this functionality in the corresponding manuals and specifications of the vehicle manufacturer, the workshop test equipment and
  • a value for the impact severity is calculated for each control device and for each sensor, based on this device.
  • the respectively calculated value for the impact severity of the respective control device or the respective sensor is then compared with a predetermined threshold value.
  • This threshold value is typically also specified specifically for the respective control device or the respective sensor. This means that depending on the position of the respective control device or sensor within the motor vehicle and depending on its mechanical properties, a threshold value that is coordinated with it can be specified.
  • the threshold value can of course also depend on other parameters, such as the mechanical stability of the respective device.
  • information from a plurality of previous impact processes can be taken into account for determining the value for the impact severity of the control device.
  • this functionality provides that, for example, in previous impact processes in which the control unit has triggered, this is also taken into account when considering a new impact to determine the severity of the impact.
  • a detected new impact with a comparatively higher value for the severity of the impact could be considered than an impact of the same magnitude in which no impact occurred.
  • the predetermined threshold value is reduced in the event of a repeated impact.
  • the absolute value of the predetermined threshold value is reduced with increasing operating time of the safety device. It takes into account the fact that with increasing operating time due to external influences, e.g. Vibrations, temperature influences, improper handling, etc., the control unit or the sensors are no longer as functional as they were, for example, in the original state, even without an impact and thus also without damage.
  • measurements from crash tests and calculations and knowledge derived therefrom are used to determine the predetermined threshold value.
  • the vehicle manufacturers can define how high the specified threshold depends on the respective speed, the vehicle bulging, the impact type, etc. would have to be selected. For example, before starting up a safety device in a motor vehicle, a large number of crash tests must be carried out to test this safety device. Such crash tests then result in empirical values or other findings for the predetermined threshold, at which the corresponding sensors or control devices remain functional after the crash, but it turns out that the functionality in the long-term test is no longer guaranteed.
  • the reading or evaluation of the output function error signal is carried out by a workshop test device. Additionally or alternatively, this can also be done by the control unit itself.
  • the diagnostic device requires an output unit that signals this to the vehicle user in the event of an error signal.
  • This output unit can be implemented, for example, in the form of a lighting lamp.
  • it could of course also be present in the functionality of an on-board computer contained in the motor vehicle.
  • Design can be derived from the error signal, which control unit or which sensor is not fully functional.
  • the functionality of the diagnostic device can be implemented entirely or at least partially in the control unit itself.
  • the diagnostic device emits a functional error signal either to a workshop test device or to a program-controlled unit.
  • a control device-typical or sensor-typical threshold value is advantageously provided for this control device or for each sensor. This predetermined threshold value is lower than a threshold value that is provided for triggering a restraint device.
  • FIG. 1 shows the block diagram of a safety device in a motor vehicle with a diagnostic device according to the invention
  • FIG. 2 shows the sequence of a method according to the invention on the basis of a block diagram
  • Figure 3 shows the block diagram of a second embodiment of a diagnostic device according to the invention.
  • FIG. 1 shows the block diagram of a safety device with a diagnostic device according to the invention.
  • the safety device is designated by reference numeral 1.
  • the safety device 1 is designed here as an electronic restraint system, for example an airbag system.
  • the safety device contains an airbag control unit 2 and a large number of sensors 3 - 5.
  • the safety device 1 has one or more front sensors 3 and side sensors 4, 5.
  • rear sensors can of course also be provided.
  • a diagnostic device 6 is now provided according to the invention.
  • the diagnostic device 6 communicates bidirectionally both with the control device 2 and with the sensors 3-5. Instead of a single diagnostic device 6, it would of course also be conceivable to provide a separate diagnostic device 6 for each control device 2 or each sensor 3-5. It would also be conceivable to implement the functionality of the diagnostic device 6 in the control unit 2.
  • the diagnostic device 6 contains a comparison device 7 and an output unit 8.
  • a vehicle impact typically indicates acceleration (or speed or pressure) in the x and y directions.
  • these accelerations are detected by at least one of the sensors 3-5.
  • the accelerations in the x-direction and y-direction are each integrated into one speed (reduced vehicle speed DV) and this becomes averaging was carried out.
  • This so-called reduced speed DV or its mean value is mostly used as a measure of the severity of the impact.
  • the control unit 2 thus receives information about its mechanical load (pressure or acceleration) as a result of a vehicle collision from the installed and outsourced sensors 3-5.
  • the control unit 2 determines the respective integral and peak values of the measured sensor signals during the vehicle impact.
  • the data obtained in this way are compared with adjustable thresholds, which ultimately leads to the triggering of a restraint.
  • the reduced vehicle speed which is calculated from the maximum of the calculated x, y integrals of the measured acceleration, is used as a measure of the severity of the accident.
  • These values for the severity of the accident are stored, for example, in a maximum amount memory.
  • the content of the maximum amount memory can be compared after a vehicle impact with a threshold specified by the vehicle manufacturer, which was determined, for example, in crash tests that are taking place anyway. This takes place in the comparison device 7. If the predetermined threshold is exceeded, the control unit 2 or the diagnostic device 6 generates an error signal which is displayed to the vehicle user in the form of, for example, a warning lamp 8. Additionally or alternatively, this functional error signal can also be read out by a workshop test device in a workshop.
  • Each individual external sensor 3-5 can additionally or alternatively be checked with similar calculations. In this way, the airbag control unit 2 can decide for itself and for each outsourced sensor 3-5 whether it or they need to be replaced after a vehicle crash.
  • the diagnostic device 6 can also be implemented in the control unit 2.
  • the comparison unit 7 and / or the output unit 8 is not necessarily contained in the diagnostic device 6, but can also be provided, for example, at another location on the motor vehicle.
  • control devices 2 or sensors 3 - 5 indicated in FIGS. 1 and 3, but can be expanded to any number of these devices 2 - 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Regulating Braking Force (AREA)
  • Air Bags (AREA)

Abstract

La présente invention concerne un procédé pour surveiller le bon fonctionnement d'un appareil de commande et/ou d'au moins un capteur d'un dispositif de sécurité destiné à protéger des occupants d'un véhicule. Ce procédé consiste à enregistrer une vitesse ou accélération négative occasionnée en particulier par une collision, à déduire une valeur pour la gravité de la collision à partir de la vitesse ou de l'accélération enregistrée puis à comparer à une valeur seuil prescrite la valeur relative à la gravité de la collision. Si la valeur relative à la gravité de la collision excède la valeur seuil prescrite, un signal de dysfonctionnement est émis, lequel signal indique qu'un fonctionnement normal de l'appareil de commande et/ou d'au moins un capteur n'est plus garanti. Ladite invention concerne également un dispositif de diagnostic permettant la mise en oeuvre dudit procédé.
PCT/DE2004/001307 2003-06-23 2004-06-22 Procede pour surveiller le bon fonctionnement d'un appareil de commande et dispositif de diagnostic WO2005000636A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10328062.6 2003-06-23
DE10328062A DE10328062A1 (de) 2003-06-23 2003-06-23 Verfahren zur Verbesserung der Sicherheit von an einem vorzeitig erkannten Unfall beteiligten Verkehrsteilnehmern

Publications (1)

Publication Number Publication Date
WO2005000636A1 true WO2005000636A1 (fr) 2005-01-06

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Application Number Title Priority Date Filing Date
PCT/DE2004/001307 WO2005000636A1 (fr) 2003-06-23 2004-06-22 Procede pour surveiller le bon fonctionnement d'un appareil de commande et dispositif de diagnostic

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DE (1) DE10328062A1 (fr)
WO (1) WO2005000636A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019052762A1 (fr) * 2017-09-12 2019-03-21 Zf Friedrichshafen Ag Prise de décision dépendante de la situation pour véhicules

Families Citing this family (9)

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Publication number Priority date Publication date Assignee Title
US7797108B2 (en) * 2006-10-19 2010-09-14 Gm Global Technology Operations, Inc. Collision avoidance system and method of aiding rearward vehicular motion
DE102008005310A1 (de) 2008-01-21 2009-07-23 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Beeinflussung der Bewegung eines Fahrzeugs bei vorzeitigem Erkennen einer unvermeidbaren Kollision mit einem Hindernis
DE102008005305A1 (de) 2008-01-21 2009-07-23 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Beeinflussung der Bewegung eines Fahrzeugs
DE112009005400B4 (de) * 2009-11-27 2015-05-13 Toyota Jidosha Kabushiki Kaisha Kollisionsvermeidungsvorrichtung
DE102012021004B4 (de) * 2012-10-26 2020-09-10 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung zum Reduzieren von medizinischen Unfallfolgen bei unvermeidbaren Unfällen im Querverkehr
DE102015210780A1 (de) * 2015-06-12 2016-12-15 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Steuereinheit zur Kommunikation zwischen einem autonomen Fahrzeug und einem Insassen
JP6760297B2 (ja) 2015-09-29 2020-09-23 ソニー株式会社 信号処理装置、信号処理方法およびプログラム
DE102019132618B4 (de) * 2019-12-02 2022-08-25 Audi Ag Verfahren zum Betreiben einer Fahrzeugfunktion für ein Kraftfahrzeug
DE102019219367A1 (de) * 2019-12-11 2021-06-17 Continental Automotive Gmbh Verfahren zur Regulierung einer Kollision

Citations (3)

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US3714627A (en) * 1971-10-20 1973-01-30 Gen Motors Corp Vehicle inflatable cushion actuation and monitoring circuit
US5387819A (en) * 1991-03-20 1995-02-07 Hitachi, Ltd. Crash detection apparatus of air bag system
EP0936111A1 (fr) * 1998-02-12 1999-08-18 Fuji Jukogyo Kabushiki Kaisha Unité de contrÔle pour airbag avec dispositif d' empêchement de la réutilisation de l' unité de contrÔle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714627A (en) * 1971-10-20 1973-01-30 Gen Motors Corp Vehicle inflatable cushion actuation and monitoring circuit
US5387819A (en) * 1991-03-20 1995-02-07 Hitachi, Ltd. Crash detection apparatus of air bag system
EP0936111A1 (fr) * 1998-02-12 1999-08-18 Fuji Jukogyo Kabushiki Kaisha Unité de contrÔle pour airbag avec dispositif d' empêchement de la réutilisation de l' unité de contrÔle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019052762A1 (fr) * 2017-09-12 2019-03-21 Zf Friedrichshafen Ag Prise de décision dépendante de la situation pour véhicules
CN110382303A (zh) * 2017-09-12 2019-10-25 Zf 腓德烈斯哈芬股份公司 用于车辆的依赖于情况的决策

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Publication number Publication date
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