DE102005036050B4 - Control device for controlling personal protective equipment - Google Patents
Control device for controlling personal protective equipment Download PDFInfo
- Publication number
- DE102005036050B4 DE102005036050B4 DE102005036050.5A DE102005036050A DE102005036050B4 DE 102005036050 B4 DE102005036050 B4 DE 102005036050B4 DE 102005036050 A DE102005036050 A DE 102005036050A DE 102005036050 B4 DE102005036050 B4 DE 102005036050B4
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- Prior art keywords
- data
- sensor
- sensors
- control device
- bus
- Prior art date
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Classifications
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- 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
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- 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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- 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
- B60R2021/01102—Transmission method
- B60R2021/01115—Transmission method specific data frames
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- 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
Abstract
Steuergerät zur Ansteuerung von Personenschutzmitteln (27) mit einem Interfacebaustein (100), der an einen BUS (19) ankoppelbar ist und einen Demultiplexer (101) für über den BUS (19) empfangene Datentelegramme aufweist, wobei der Demultiplexer (101) die jeweiligen Datentelegramme zu einer jeweiligen Datenauswertung verteilt, wobei in Abhängigkeit von der jeweiligen Auswertung die jeweiligen Datentelegramme in jeweilige Register (105, 106, 107) geschrieben werden.Control device for controlling personal protection means (27) having an interface module (100) which can be coupled to a BUS (19) and has a demultiplexer (101) for data telegrams received via the BUS (19), wherein the demultiplexer (101) the respective data telegrams distributed to a respective data evaluation, wherein depending on the respective evaluation, the respective data telegrams in respective registers (105, 106, 107) are written.
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Steuergerät zur Ansteuerung von Personenschutzmitteln nach Gattung des unabhängigen Patentanspruchs.The invention relates to a control device for controlling personal protection devices according to the preamble of the independent claim.
Aus
Aus der
Aus der
Der erste Teil wird für die Sensorwerte verwendet. Der zweite Teil wird für Status- und Fehlermeldungen und der dritte Teil für Sensoridentifikationsdaten verwendet, wobei die drei Teile voneinander getrennt sind und aufeinander folgen.The first part is used for the sensor values. The second part is used for status and error messages and the third part for sensor identification data, the three parts being separate and following each other.
Aus der
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Steuergerät zur Ansteuerung von Personenschutzmitteln mit den Merkmalen des unabhängigen Patentanspruchs haben dem gegenüber den Vorteil, dass zusätzlich zum Zeitschlitz für jeden Sensor eine eigene Kontrolle bzw. Auswertung durchgeführt wird, sodass mit erhöhter Sicherheit festgestellt wird, ob das betreffende Datentelegramm von dem jeweiligen Sensor auch tatsächlich gesendet wird. Insbesondere beim Personenschutz in Fahrzeugen ist es wichtig, die Sensorinformation auch dem richtigen Sensor zuzuordnen, denn andernfalls könnte eine falsche Zuordnung zur Auslösung von falschen Personenschutzmitteln führen und damit den tatsächlichen Unfall nicht optimal in seinen Folgen mildern und gegebenenfalls sogar die Folgen weiter verschlechtern. Erfindungsgemäß wird nun ein Datenabschnitt zur Datenüberprüfung dazu verwendet, auch diese Sensorzuordnung zu ermöglichen. Dazu wird dieser Datenabschnitt kennzeichnend für den jeweiligen Sensor verändert, sodass im Steuergerät ausgewertet werden kann und zwar anhand dieses Datenabschnitts von welchem Sensor dieses Datentelegramm stammt. Dieser Datenabschnitt kann auch als Kontrollinformationseinheit bezeichnet werden und wird daher erfindungsgemäß mit einer Kanalkontrolle verbunden. Mit Datenüberprüfung ist eine Datenkontrolle gemeint, d.h. der Empfänger der Daten stellt fest, ob Fehler aufgetreten sind und ggfs. welche. Es können auch Daten zur Fehlerkorrektur und/oder zur Fehlerverschleierung in diesem Datenabschnitt vorgesehen sein.The inventive control device for controlling personal protection means with the features of the independent claim have the advantage over that in addition to the time slot for each sensor its own control or evaluation is performed so that it is determined with increased certainty, whether the relevant data telegram from the respective sensor also actually sent. In particular, in the protection of persons in vehicles, it is important to assign the sensor information to the right sensor, otherwise an incorrect assignment could lead to the triggering of false personal protection devices and thus not optimally mitigate the actual accident in its consequences and possibly even further worsen the consequences. According to the invention, a data section for data verification is now used to enable this sensor assignment as well. For this purpose, this data section is characteristically changed for the respective sensor, so that it is possible to evaluate in the control unit, and indeed from this sensor, from which sensor this data telegram originates. This data section can also be referred to as a control information unit and is therefore connected according to the invention to a channel control. By data verification is meant a data control, i. The recipient of the data determines whether errors have occurred and, if so, which ones. It is also possible to provide data for error correction and / or error concealment in this data section.
Besonders vorteilhaft ist, dass als der Datenabschnitt ein Parity Bit verwendet wird. Diese Kontrollinformation kann bei einer Anordnung mit nur zwei Sensoren verwendet werden, da durch dass Parity Bit lediglich zwei Sensoren codierbar sind. Werden mehr als zwei Sensoren verwendet, dann kann vorteilhafterweise die so genannte CRC Checksumme verwendet werden. Mit dieser Prüfsumme ist es möglich, mehrere Sensoren zu codieren, in dem unterschiedliche CRC Polynome oder dieselben Polynome mit unterschiedlichen Startwerten für die CRC Bits verwendet werden. Im einfachsten Fall ist die Parity Bildung ein CRC Polynom erster Ordnung, nur das dem Parity Bit ein Startwert zugeordnet wird. Die zu prüfenden Bits werden nach und nach mit dem Parity XOR verknüpft. Ist dies 0, dann ist die Parity ODD, ist es 1, dann ist die Parity Even. Die Verwendung dieser bereits vorhandenen Kontrollinformationen sorgt dafür, dass für die Kanalzuordnung keine zusätzliche Übertragungskapazität verwendet werden muss. Damit ist das erfindungsgemäße Verfahren bzw. das erfindungsgemäße Steuergerät äußerst effizient.It is particularly advantageous that a parity bit is used as the data section. This control information can be used in an arrangement with only two sensors, since only two sensors can be coded by the parity bit. If more than two sensors are used, then advantageously the so-called CRC checksum can be used. With this checksum it is possible to encode multiple sensors using different CRC polynomials or polynomials with different starting values for the CRC bits. In the simplest case, the parity formation is a first order CRC polynomial, except that the parity bit is assigned a seed. The bits to be checked are gradually linked to the parity XOR. If this is 0, then the parity is ODD, if it is 1, then the parity is even. The use of this already existing control information ensures that no additional transmission capacity has to be used for channel assignment. Thus, the inventive method or the control unit according to the invention is extremely efficient.
Das Datentelegramm wird über eine BUS-Leitung übertragen, wobei hier eine BUS-Leitung, meist ein serieller BUS, nicht nur für die bidirektionale Übertragung geeignet sein muss, sondern es kann auch ein Quasi-BUS sein, bei dem die Sensoren an den BUS angeschlossen sind, aber keine Nachrichten von Steuergerät empfangen. Die Daten werden also uni-direktional von den Sensoren zum Steuergerät übertragen, wobei der Start beispielsweise durch das Hochlaufen der Energieversorgungsspannung gegeben sein kann und dann die Sensoren nacheinander die Daten auf den Quasi-BUS legen.The data telegram is transmitted via a BUS line, in which case a BUS line, usually a serial BUS, not only has to be suitable for bidirectional transmission, but it can also be a quasi-BUS in which the sensors are connected to the BUS are but no messages received from controller. The data are thus transmitted uni-directionally from the sensors to the control unit, wherein the start can be given for example by the run-up of the power supply voltage and then the sensors successively put the data on the quasi-BUS.
Zeichnungdrawing
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden in der nachfolgenden Beschreibung näher erläutert.Embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description.
Es zeigen
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1 ein erstes Blockschaltbild -
2 zweites Blockschaltbild und -
3 ein Flussdiagramm.
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1 a first block diagram -
2 second block diagram and -
3 a flowchart.
Beschreibungdescription
Die Übertragungskontrollen
Bei nur zwei Sensoren kann auch ein Parity Bit zur Identifikation des jeweiligen Sensors verwendet werden. Dann sendet ein erster Sensor seine Botschaft mit dem Parity ODD und der zweite Sensor sendet seine Botschaft mit dem Parity EVEN. In der Empfangseinheit schaltet der Eingangsdemultiplexer nach Zeitschlitz oder nach Anfrage zwischen den beiden Eingangskanälen um. Im Kanal
Im Flussdiagramm gemäß
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102005036050.5A DE102005036050B4 (en) | 2005-08-01 | 2005-08-01 | Control device for controlling personal protective equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102005036050.5A DE102005036050B4 (en) | 2005-08-01 | 2005-08-01 | Control device for controlling personal protective equipment |
Publications (2)
Publication Number | Publication Date |
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DE102005036050A1 DE102005036050A1 (en) | 2007-02-08 |
DE102005036050B4 true DE102005036050B4 (en) | 2019-03-07 |
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DE102005036050.5A Expired - Fee Related DE102005036050B4 (en) | 2005-08-01 | 2005-08-01 | Control device for controlling personal protective equipment |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102007008386A1 (en) | 2007-02-21 | 2008-08-28 | Robert Bosch Gmbh | Control device for controlling personal protection devices, device for controlling personal protection devices and method for generating a test signal for at least one accident sensor |
DE102007058071A1 (en) * | 2007-12-03 | 2009-06-10 | Robert Bosch Gmbh | Method and device for checking the plausibility of an evaluation of safety-relevant signals for a motor vehicle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19945614C1 (en) | 1999-09-23 | 2000-12-28 | Bosch Gmbh Robert | Data transmission method for passenger restraint control device in automobile has data from crash sensors transmitted to control device via common bus line in response to received interrogation telegram |
DE10111265A1 (en) | 2001-03-09 | 2002-09-12 | Bosch Gmbh Robert | Device for data transmission between vehicle sensors and a processor of a control unit |
DE10149332A1 (en) | 2001-10-06 | 2003-04-30 | Bosch Gmbh Robert | Method for transmitting data from at least one sensor to a control device |
DE10321679A1 (en) | 2003-05-14 | 2004-12-09 | Siemens Ag | Method and device for transmitting data between a central control unit of an occupant protection system in a vehicle and at least one decentralized sensor unit |
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2005
- 2005-08-01 DE DE102005036050.5A patent/DE102005036050B4/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19945614C1 (en) | 1999-09-23 | 2000-12-28 | Bosch Gmbh Robert | Data transmission method for passenger restraint control device in automobile has data from crash sensors transmitted to control device via common bus line in response to received interrogation telegram |
DE10111265A1 (en) | 2001-03-09 | 2002-09-12 | Bosch Gmbh Robert | Device for data transmission between vehicle sensors and a processor of a control unit |
DE10149332A1 (en) | 2001-10-06 | 2003-04-30 | Bosch Gmbh Robert | Method for transmitting data from at least one sensor to a control device |
DE10321679A1 (en) | 2003-05-14 | 2004-12-09 | Siemens Ag | Method and device for transmitting data between a central control unit of an occupant protection system in a vehicle and at least one decentralized sensor unit |
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