DE102006032938A1 - Signal e.g. high dynamic signal, processing method for acceleration sensor, involves verifying result of processing path for plausibility by result of another processing path, where results of processing paths are compared with one another - Google Patents
Signal e.g. high dynamic signal, processing method for acceleration sensor, involves verifying result of processing path for plausibility by result of another processing path, where results of processing paths are compared with one another Download PDFInfo
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- DE102006032938A1 DE102006032938A1 DE102006032938A DE102006032938A DE102006032938A1 DE 102006032938 A1 DE102006032938 A1 DE 102006032938A1 DE 102006032938 A DE102006032938 A DE 102006032938A DE 102006032938 A DE102006032938 A DE 102006032938A DE 102006032938 A1 DE102006032938 A1 DE 102006032938A1
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- 238000012545 processing Methods 0.000 title claims abstract description 48
- 230000001133 acceleration Effects 0.000 title claims abstract description 9
- 238000003672 processing method Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000011156 evaluation Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims 1
- 210000000712 G cell Anatomy 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
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
- B60R2021/0104—Communication circuits for data transmission
- B60R2021/01047—Architecture
- B60R2021/01054—Bus
- B60R2021/01068—Bus between different sensors and airbag control unit
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Verarbeitung eines Signals zumindest eines Beschleunigungssensors sowie entsprechende Signalverarbeitungseinrichtung.The The invention relates to a method for processing a signal at least one acceleration sensor and corresponding signal processing device.
Digitale Signalverarbeitungsprozessoren bieten die Möglichkeit, ein hochdynamisches Signal wie beispielsweise von Beschleunigungssensoren mit komplexen Berechnungen zu analysieren, insbesondere bestimmte Spektralanteile zu bewerten. Digitale Signalverarbeitungsprozessoren weisen jedoch leider nicht immer ein völlig störungsfreies Betriebsverhalten auf. Gerade für sicherheitskritische Anwendungen, wie die Auslösung von Insassenschutzeinrichtungen sind sie daher bisher nur beschränkt einsetzbar.digital Signal processing processors offer the possibility of a highly dynamic Signal such as from acceleration sensors with complex To analyze calculations, in particular certain spectral components to rate. However, digital signal processing processors have unfortunately not always completely trouble-free Operating behavior on. Especially for safety-critical applications, such as the deployment of occupant protection equipment Therefore, they are so far only limited used.
Bei den heutigen Beschleunigungsaufnehmern werden zum Nachweis der Funktionalität desselben im Regelfall bei der Inbetriebnahme (Power On/Zündschlüssel passiv → aktiv) durch eine initiierte Testphase geprüft, ob der Beschleunigungsaufnehmer, ein auf eine Testanregung an einem dafür vorgesehenen Eingang, am Ausgang ein entsprechendes erwartetes Signal zeigt/erzeugt, um Aufgrund dessen Form und Amplitude auf die korrekte Funktionalität, insbesondere den Verstärkungsfaktor und Filtereigenschaften, des Beschleunigungssensors schließen zu können.at Today's accelerometers become the proof of its functionality usually during commissioning (Power On / ignition key passive → active) checked by an initiated test phase, whether the accelerometer, on a test stimulation at a designated entrance, on Output shows / generates a corresponding expected signal to Due its shape and amplitude to the correct functionality, in particular the amplification factor and filter characteristics of being able to close the acceleration sensor.
Diese
Tests werden derzeit nur während
der Selbsttestphase des Systems durchgeführt, da eine Überprüfung während des
zyklischen Betriebs des Sensors (Fahrbetrieb des Kraftfahrzeugs)
die am Ausgang entstehenden Signale von dem nachgeschalteten μC (Berechnungseinheit
außerhalb
des Sensors (
Aufgabe der Erfindung ist es daher, ein Verfahren sowie eine Signalverarbeitungseinrichtung für Beschleunigungsaufnehmer mit verbesserter Funktionssicherheit (Fehlererkennungssicherheit) vorzustellen.task The invention is therefore a method and a signal processing device for accelerometers with improved functional reliability (fault detection reliability) imagine.
Diese Aufgabe wird durch die Merkmale der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen der Erfindung ergeben sich 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 Further 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 ein paralleler Verarbeitungspfad ohne digitalen Signalverarbeitungsprozessor vorgesehen ist, in dem das Signal parallel einer einfacheren Bewertung zugeführt und die Ergebnisse verglichen, insbesondere das Ergebnis des DSP plausibilisiert wird.One essential idea of the invention is that a parallel Processing path provided without a digital signal processing processor in which the signal is fed in parallel for a simpler rating and compared the results, in particular the plausibility of the result of the DSP becomes.
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.The 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.
Vorzugsweise
wird das Sensorsignal (x) der g-Zelle (
Im
Hauptpfad wird der digitale Bitstrom (z.B. 1 Bit @ 1 MHz) anschließend vorzugsweise
mittels eines Dezimationsfilters (
Im
zweiten parallelen bzw. quasi parallelen Pfad, wird, wie aus der
Sofern
die beiden Signale von den beiden Signalpfaden stammend nicht innerhalb
eines bestimmten relativen Bereiches zueinander sind, da beispielsweise
ein Fehler in einem der Signalpfade vorliegt, so liefert der Komparator
(
Auf
diese Art und Weise der parallelen bzw. quasi parallelen Abarbeitung
von Sensorsignalen ist eine einfache permanente Überwachung sowie Fehlerreaktion
hinsichtlich eines Fehlers in der Signalaufbereitung (
Wie
aus der
Die
Die
Die
Abschließend sei
der Vollständigkeit
(nicht näher
gezeigt) erwähnt,
dass bei allen gezeigten Realisierungen, die Daten des Sensors (
- 1.1.
- Sensorsensor
- 1.11.1
- DSP/Digitaler-Signal-ProzessorDSP / Digital Signal Processor
- 1.1.11.1.1
- Tiefpasslowpass
- 1.1.21.1.2
- Verstärkeramplifier
- 1.1.31.1.3
- Hochpasshighpass
- 1.2.11.2.1
- g-Zelle/Sensorzelleg-cell / sensor cell
- 1.2.21.2.2
- Sigma-Wandler (Analogsignal → Bitstrom)Sigma converter (Analog signal → bit stream)
- 1.2.31.2.3
- SINC-Filter/Dezimationsfilter (1 Bit @ 1 MHz → 16 Bit @ 64 kHz)SINC filter / decimation (1 bit @ 1 MHz → 16 Bit @ 64 kHz)
- 1.3.11.3.1
- SINC-Filter/Dezimationsfilter (1 Bit @ 1 MHz → 16 Bit @ 64 kHz)SINC filter / decimation (1 bit @ 1 MHz → 16 Bit @ 64 kHz)
- 1.3.21.3.2
- parallele Signalverarbeitung (z.B. Filter, Komprimierung, Mischer) ohne DSPparallel Signal processing (e.g., filter, compression, mixer) without DSP
- 1.41.4
- Vergleicher mit integrierten Toleranzbereichencomparator with integrated tolerance ranges
- 1.51.5
- SPI/Seriell-Parallel-InterfaceSPI / Serial Parallel Interface
- 1.61.6
- MUXMUX
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006032938A DE102006032938A1 (en) | 2006-03-17 | 2006-07-15 | Signal e.g. high dynamic signal, processing method for acceleration sensor, involves verifying result of processing path for plausibility by result of another processing path, where results of processing paths are compared with one another |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006012767.6 | 2006-03-17 | ||
DE102006012767 | 2006-03-17 | ||
DE102006032938A DE102006032938A1 (en) | 2006-03-17 | 2006-07-15 | Signal e.g. high dynamic signal, processing method for acceleration sensor, involves verifying result of processing path for plausibility by result of another processing path, where results of processing paths are compared with one another |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006032938A1 true DE102006032938A1 (en) | 2007-09-20 |
Family
ID=38375030
Family Applications (1)
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---|---|---|---|
DE102006032938A Withdrawn DE102006032938A1 (en) | 2006-03-17 | 2006-07-15 | Signal e.g. high dynamic signal, processing method for acceleration sensor, involves verifying result of processing path for plausibility by result of another processing path, where results of processing paths are compared with one another |
Country Status (1)
Country | Link |
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DE (1) | DE102006032938A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008053226A1 (en) * | 2008-10-25 | 2010-04-29 | Continental Automotive Gmbh | Body sound signal evaluating method for person protection system for vehicle, involves band pass filtering and scanning body sound signal, and filtering scanning value of body sound signal with decimation filter |
DE102010005914A1 (en) | 2010-01-27 | 2011-07-28 | Continental Automotive GmbH, 30165 | Sensing unit e.g. acceleration sensor, for use in control apparatus for controlling occupant protection system of car, has terminal transmitting signal, where unit transmits another signal in temporal manner, during fault free operation |
DE102015114211A1 (en) * | 2015-08-27 | 2017-03-02 | Endress + Hauser Gmbh + Co. Kg | Sensor circuit for evaluating a sensor signal |
Citations (5)
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---|---|---|---|---|
DE3879512T2 (en) * | 1988-06-09 | 1993-06-24 | Bosch Gmbh Robert | DEVICE AND METHOD FOR TRIGGERING A SECURITY SYSTEM FOR PROTECTING VEHICLE INPUTS. |
DE10037737A1 (en) * | 2000-08-02 | 2002-02-21 | Siemens Ag | Method of secure single channel analysis of sensor signals especially indicator signals |
DE10138764C1 (en) * | 2001-06-06 | 2002-10-31 | Bosch Gmbh Robert | Frontal impact detection system for use on motor vehicle uses forward-mounted longitudinal acceleration sensor and rearward-mounted longitudinal and lateral acceleration sensor |
DE102004021635A1 (en) * | 2004-05-03 | 2005-12-08 | Siemens Ag | Device and method for fail-safe acquisition of measured values in a control unit |
DE102005005995A1 (en) * | 2004-02-23 | 2006-06-22 | Continental Teves Ag & Co. Ohg | Method and device for monitoring signal processing units for sensors |
-
2006
- 2006-07-15 DE DE102006032938A patent/DE102006032938A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3879512T2 (en) * | 1988-06-09 | 1993-06-24 | Bosch Gmbh Robert | DEVICE AND METHOD FOR TRIGGERING A SECURITY SYSTEM FOR PROTECTING VEHICLE INPUTS. |
DE10037737A1 (en) * | 2000-08-02 | 2002-02-21 | Siemens Ag | Method of secure single channel analysis of sensor signals especially indicator signals |
DE10138764C1 (en) * | 2001-06-06 | 2002-10-31 | Bosch Gmbh Robert | Frontal impact detection system for use on motor vehicle uses forward-mounted longitudinal acceleration sensor and rearward-mounted longitudinal and lateral acceleration sensor |
DE102005005995A1 (en) * | 2004-02-23 | 2006-06-22 | Continental Teves Ag & Co. Ohg | Method and device for monitoring signal processing units for sensors |
DE102004021635A1 (en) * | 2004-05-03 | 2005-12-08 | Siemens Ag | Device and method for fail-safe acquisition of measured values in a control unit |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008053226A1 (en) * | 2008-10-25 | 2010-04-29 | Continental Automotive Gmbh | Body sound signal evaluating method for person protection system for vehicle, involves band pass filtering and scanning body sound signal, and filtering scanning value of body sound signal with decimation filter |
DE102008053226B4 (en) * | 2008-10-25 | 2017-03-09 | Continental Automotive Gmbh | Method for evaluating a structure-borne sound signal for a personal protection system |
DE102010005914A1 (en) | 2010-01-27 | 2011-07-28 | Continental Automotive GmbH, 30165 | Sensing unit e.g. acceleration sensor, for use in control apparatus for controlling occupant protection system of car, has terminal transmitting signal, where unit transmits another signal in temporal manner, during fault free operation |
DE102010005914B4 (en) | 2010-01-27 | 2019-10-10 | Continental Automotive Gmbh | Sensor unit for a vehicle control system |
DE102015114211A1 (en) * | 2015-08-27 | 2017-03-02 | Endress + Hauser Gmbh + Co. Kg | Sensor circuit for evaluating a sensor signal |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
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Effective date: 20130716 |