DE10159081B4 - Method and device for transmitting redundant information - Google Patents
Method and device for transmitting redundant information Download PDFInfo
- Publication number
- DE10159081B4 DE10159081B4 DE10159081.4A DE10159081A DE10159081B4 DE 10159081 B4 DE10159081 B4 DE 10159081B4 DE 10159081 A DE10159081 A DE 10159081A DE 10159081 B4 DE10159081 B4 DE 10159081B4
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- redundant information
- sensors
- redundant
- evaluation
- information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C2201/00—Transmission systems of control signals via wireless link
- G08C2201/60—Security, fault tolerance
- G08C2201/63—Redundant transmissions
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Small-Scale Networks (AREA)
Abstract
Vorrichtung zur Übertragung von redundanten Informationen (I1 - In), umfassend mindestens zwei Sensoren (S1 - Sn), mindestens zwei Auswerteeinheiten (A1 - An) sowie eine den Auswerteeinheiten (A1 - An) nachgeordnete Verknüpfung (V), die über eine einzige serielle Schnittstelle mit einem Bussystem (2) verbunden ist, wobei jeder Auswerteeinheit (A1 - An) mindestens ein Sensor (S1 - Sn) zugeordnet ist, wobei die Sensoren (S1 - Sn) jeweils mit einem Eingang der zugeordneten Auswerteeinheit (A1 - An) verbunden sind, wobei die Sensoren (S1 - Sn) redundant sind und die gleiche Messgröße erfassen, wobei die Auswerteeinheiten (A1 - An) derart ausgebildet sind, zugeführte Sensorsignale (S1 - Sn) in redundante Informationen (I1 - In) umzusetzen, wobei die Verknüpfung (V) derart ausgebildet ist, die redundanten Informationen (I1 - In) zu einem Signal (S) zusammenzufassen, wobei der jeweilige volle Informationsgehalt der redundanten Informationen (I1 - In) erhalten bleibt und über die einzige serielle Schnittstelle übertragen wird. Device for transmitting redundant information (I 1 -I n ), comprising at least two sensors (S 1 -S n ), at least two evaluation units (A 1 -A n ) and the evaluation units (A 1 -A n ) downstream link ( V), which is connected via a single serial interface with a bus system (2), wherein each evaluation unit (A 1 - A n ) at least one sensor (S 1 - S n ) is assigned, wherein the sensors (S 1 - S n ) are each connected to an input of the associated evaluation unit (A 1 -A n ), wherein the sensors (S 1 -S n ) are redundant and detect the same measured variable, wherein the evaluation units (A 1 -A n ) are formed such supplied sensor signals (S 1 -S n ) in redundant information (I 1 - I n ) implement, wherein the link (V) is designed such that the redundant information (I 1 - I n ) to summarize a signal (S), wherein the respective full information content of the redundant information (I 1 - I n ) is maintained and transmitted via the single serial interface.
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Übertragung von redundanten Informationen.The invention relates to a method and a device for transmitting redundant information.
Insbesondere in der Kraftfahrzeugtechnik nimmt die Anzahl elektrischer Systeme und Steuergeräte kontinuierlich zu, wobei diese vermehrt auch in sicherheitsrelevanten Systemen wie beispielsweise elektromechanischen Bremsanlagen oder Airbag-Steuergeräten zum Einsatz kommen. Bei sicherheitskritischen Systemen spielt die Zuverlässigkeit eine entscheidene Rolle, so daß es hier bekannt ist, die Systeme weitgehend redundant auszubilden. Hierzu umfaßt das elektrische System mindestens einen Sensor zur Erfassung einer Meßgröße und mindestens zwei Auswerteeinheiten, die aus dem mindestens einem Signal des Sensors zwei redundante Informationen generieren, die dann über ein reduntantes Bussystem bzw. zwei separate Datenleitungen an andere elektrische Systeme übertragen werden. Derartig vollständig redundante Systeme erfordern einen erheblichen schaltungstechnischen Aufwand, sind relativ teuer und bereiten einen großen Installationsaufwand.In particular, in automotive technology, the number of electrical systems and control units is increasing continuously, and these are increasingly used in safety-related systems such as electromechanical brake systems or airbag control units. Reliability plays a decisive role in safety-critical systems, so that it is known here to design the systems largely redundantly. For this purpose, the electrical system comprises at least one sensor for detecting a measured variable and at least two evaluation units, which generate from the at least one signal of the sensor two redundant information, which are then transmitted via a reduntantes bus system or two separate data lines to other electrical systems. Such completely redundant systems require a considerable circuit complexity, are relatively expensive and prepare a large installation effort.
Aus der
Aus der
Aus der
Der Erfindung liegt daher das technische Problem zugrunde, ein Verfahren und eine Vorrichtung zur Übertragung von redundanten Informationen zu schaffen, bei der bei geringerem schaltungstechnischem Aufwand die Redundanz erhalten bleibt.The invention is therefore based on the technical problem of providing a method and a device for transmitting redundant information, in which the redundancy is maintained with less circuit complexity.
Die Lösung des technischen Problems ergibt sich durch die Gegenstände mit den Merkmalen der Patentansprüche 1 und 4. Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.The solution of the technical problem results from the objects with the features of
Hierzu wird den Auswerteeinheiten eine Verknüpfungseinheit nachgeordnet, mittels derer die redundanten Informationen zu einem Signal zusammenfassbar sind, wobei der jeweilige volle Informationsgehalt der redundanten Informationen erhalten bleibt und über eine einzige serielle Schnittstelle zu den anderen elektrischen Systemen übertragen wird. Dabei bleibt die Redundanz erhalten, wobei nur eine einzige Schnittstelle und nur ein einziges Bussystem benötigt wird. Der dabei auftretende Zeitverlust ist bei kurzen Informationen vernachlässigbar, so daß sich der Mehraufwand auf die Verknüpfungseinheit beschränkt.For this purpose, the evaluation units are followed by a linking unit, by means of which the redundant information can be combined to form a signal, wherein the respective full information content of the redundant information is retained and transmitted via a single serial interface to the other electrical systems. In this case, the redundancy is maintained, with only a single interface and only a single bus system is required. The time loss occurring is negligible with short information, so that the additional effort is limited to the linking unit.
Dabei ist jeder Auswerteeinheit mindestens ein Sensor zugeordnet.Each evaluation unit is assigned at least one sensor.
In einer Ausführungsform werden in der Verknüpfungseinheit Abweichungen oder Fehler in den redundanten Informationen erfaßt und als Fehler im Signal gekennzeichnet.In one embodiment, deviations or errors in the redundant information are detected in the linking unit and identified as an error in the signal.
In einer weiteren bevorzugten Ausführungsform ist die Verknüpfungseinheit fail-silent ausgebildet, so daß im Fehlerfall keine Signale mehr erzeugt werden, die ein gültiges Datum darstellen könnten.In a further preferred embodiment, the linking unit is formed fail-silent, so that no more signals are generated in the event of an error, which could represent a valid date.
Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Die einzige Figur zeigt ein schematisches Blockschaltbild einer Vorrichtung zur Übertragung von redundanten Informationen.The invention will be explained in more detail below with reference to a preferred embodiment. The single FIGURE shows a schematic block diagram of a device for transmitting redundant information.
Die Vorrichtung
Ein bevorzugtes Anwendungsgebiet der Erfindung ist die Datenübertragung von Modulen in einem Kraftfahrzeug, insbesondere als Bestandteil eines sicherheitsrelevanten Systems.A preferred field of application of the invention is the data transmission of modules in a motor vehicle, in particular as part of a safety-relevant system.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10159081.4A DE10159081B4 (en) | 2001-11-26 | 2001-11-26 | Method and device for transmitting redundant information |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10159081.4A DE10159081B4 (en) | 2001-11-26 | 2001-11-26 | Method and device for transmitting redundant information |
Publications (2)
Publication Number | Publication Date |
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DE10159081A1 DE10159081A1 (en) | 2003-06-05 |
DE10159081B4 true DE10159081B4 (en) | 2018-08-02 |
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Application Number | Title | Priority Date | Filing Date |
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DE10159081.4A Expired - Lifetime DE10159081B4 (en) | 2001-11-26 | 2001-11-26 | Method and device for transmitting redundant information |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0179341A2 (en) | 1984-10-26 | 1986-04-30 | Westinghouse Electric Corporation | Method and apparatus for remotely monitoring a process carried out in a containment structure |
DE19705365A1 (en) | 1997-02-12 | 1998-08-20 | Autoliv Dev | Time multiplexed transmission of signals from sensors |
DE19739808A1 (en) | 1997-09-10 | 1999-03-11 | Siemens Ag | Method and device for controlling the data transmission between two modules present in a motor vehicle |
DE19832167A1 (en) | 1997-11-22 | 1999-05-27 | Itt Mfg Enterprises Inc | Electromechanical braking system for cars |
DE19829126A1 (en) | 1997-11-22 | 1999-05-27 | Itt Mfg Enterprises Inc | Electromechanical braking system for cars |
DE19853036A1 (en) | 1997-11-22 | 1999-06-02 | Continental Teves Ag & Co Ohg | Electromechanical braking system |
DE19841335A1 (en) | 1998-02-07 | 1999-08-12 | Itt Mfg Enterprises Inc | Generation of a braking request for the control of the electric braking system |
DE19756976C2 (en) | 1997-12-20 | 2000-05-11 | Daimler Chrysler Ag | Brake device for vehicles |
DE19946970A1 (en) | 1998-12-03 | 2000-06-21 | Toshiba Kawasaki Kk | Detection device |
-
2001
- 2001-11-26 DE DE10159081.4A patent/DE10159081B4/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0179341A2 (en) | 1984-10-26 | 1986-04-30 | Westinghouse Electric Corporation | Method and apparatus for remotely monitoring a process carried out in a containment structure |
DE19705365A1 (en) | 1997-02-12 | 1998-08-20 | Autoliv Dev | Time multiplexed transmission of signals from sensors |
DE19739808A1 (en) | 1997-09-10 | 1999-03-11 | Siemens Ag | Method and device for controlling the data transmission between two modules present in a motor vehicle |
WO1999012771A1 (en) | 1997-09-10 | 1999-03-18 | Siemens Aktiengesellschaft | Method and device for controlling data transmission between two modules located in a motor vehicle |
DE19832167A1 (en) | 1997-11-22 | 1999-05-27 | Itt Mfg Enterprises Inc | Electromechanical braking system for cars |
DE19829126A1 (en) | 1997-11-22 | 1999-05-27 | Itt Mfg Enterprises Inc | Electromechanical braking system for cars |
DE19853036A1 (en) | 1997-11-22 | 1999-06-02 | Continental Teves Ag & Co Ohg | Electromechanical braking system |
DE19756976C2 (en) | 1997-12-20 | 2000-05-11 | Daimler Chrysler Ag | Brake device for vehicles |
DE19841335A1 (en) | 1998-02-07 | 1999-08-12 | Itt Mfg Enterprises Inc | Generation of a braking request for the control of the electric braking system |
DE19946970A1 (en) | 1998-12-03 | 2000-06-21 | Toshiba Kawasaki Kk | Detection device |
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DE10159081A1 (en) | 2003-06-05 |
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