EP1943781A1 - Gemischtsignalschaltkreis für ein elektronisches, abgesichertes steuer- bzw. regelungssystem - Google Patents
Gemischtsignalschaltkreis für ein elektronisches, abgesichertes steuer- bzw. regelungssystemInfo
- Publication number
- EP1943781A1 EP1943781A1 EP06807682A EP06807682A EP1943781A1 EP 1943781 A1 EP1943781 A1 EP 1943781A1 EP 06807682 A EP06807682 A EP 06807682A EP 06807682 A EP06807682 A EP 06807682A EP 1943781 A1 EP1943781 A1 EP 1943781A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- data
- sensor
- transmitted
- circuit
- mixed signal
- 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- Withdrawn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
- 238000012360 testing method Methods 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 10
- 238000011156 evaluation Methods 0.000 claims 5
- 238000012937 correction Methods 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 description 3
- 230000001953 sensory effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
- B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
-
- 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
-
- 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
- H04L1/0045—Arrangements at the receiver end
-
- 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
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/40—Failsafe aspects of brake control systems
- B60T2270/406—Test-mode; Self-diagnosis
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
Definitions
- the invention relates to a mixed signal circuit according to claim 1, the use thereof and a data transmission method according to claim 6.
- Motor vehicle brake control devices with ABS, ESP, etc. which comprise as the core of the electronics a fail-safe microcontroller (constructed for example in binuclear microprocessor technology) and an integrated mixed signal circuit, are known per se.
- the separation of the equipped with the microprocessor microcontroller and the mixed signal chip is required in order to produce power drivers for controlling, for example, the valve coils of an ABS system in the semiconductor technology used also in an integrated design.
- the input signal processing for the sensors connected to the control unit is also summarized.
- output units for the actuators connected to the control unit are also combined in the mixed signal circuit.
- the object of the present invention is now to improve the security of the data transmission path between electronic modules (for example electronic components), in particular from a sensor to a microcontroller, in a motor vehicle control unit.
- electronic modules for example electronic components
- test data used on the input side to protect the sensor data are also output when relaying to further external modules for securing the passed-on data. These are then also used in the external module for checking the data transmitted to the module.
- test data used on the input side for securing the sensor data are used within the mixed circuit for securing the internally processed sensor data.
- test data generation essentially takes place only within the sensor. It is particularly expedient for the test data to be generated as early as possible at the beginning of the signal transmission chain, that is to say in particular in the region of the sensor head or the sensor element.
- the invention also relates to a data transmission method according to claim 6.
- Fig. 1 shows a mixed signal circuit according to the prior art in a schematic representation
- Fig. 2 is a mixed signal circuit according to the invention also in a schematic representation.
- sensor 2 is connected via data bus 18 to mixed signal circuit 4.
- Sensor 2 comprises a data source 1 and an interface "Interface A" 3 for the output and transmission of digital sensor data.
- the sensor data generated by sensor 2 are transmitted via line 18 to the mixed signal circuit 4. While the internal data transmission of the sensor 4 (symbolically highlighted as a data path 7 by a circle) is not secured, however, the sensor data transmitted via bus 18 are secured by additional test data "PD A" 15. With the test data 15, it is possible to detect transmission errors on the input side of circuit 4 and, if necessary, to analyze the data before the internal further processing. correcting it.
- Mixed signal circuit 4 thus checks, in particular in input circuit 5, the input data transmitted by sensor 2 with the aid of the likewise transmitted test data. If there is data conformity, these are transferred to the internal bus 6.
- the bus 6 highlighted with a circle symbolically represents a multiplexer 17 for the realization of several sensor inputs, whereby no test data is transmitted via bus 6.
- an error message is generated, which is also provided without Prufarian the internal bus 6.
- the symbol "Dat X" 16 likewise connected on the input side with internal bus 6 is representative of further, non-sensory or internal data of the mixture signal circuit, which can likewise be output via bus 16.
- microcontroller 11 is also connected to mixed signal circuit 4, which inputs the sensor data forwarded by the mixed signal circuit via SPI data bus 16 into input interface 13.
- test data "PD B" 14 are again generated in mixed signal circuit 4 according to the prior art and transmitted together with the sensor data via BUS 16 to microcontroller 11.
- Fig. 2 shows a schematic representation of an improved signal path from sensor 2 'to microcontroller 11' via mixed signal circuit 4 ', in which the above-mentioned sources of error can not occur.
- a test data generating device for generating test data 12 is already provided for this purpose in the area of data generation 1' (for example, directly in the case of a sensory element).
- the sensor data if they were free of errors, including the same, already generated in sensor 2 ', test data to internal bus 6' are then transferred. If the data contained an error, then, according to the circuit in FIG. 1, an error message and a check sum matching the error message are generated. The error message and the generated checksum are transferred to the internal bus 6 '.
- the sensor data can then be output to bus 16 upon request by microcontroller 11 'together with the test data from sensor 2'.
- the data does not contain test data prior to output by the data output interface 19 or is not provided with test data, a new calculation of new test data corresponding to the circuit in FIG. 1 is performed.
- Examples of data to be passed on which do not have any check data are, for example, For example, unsecured internal data ("Dat X") of an analog-to-digital converter residing within composite signal circuit 4 'or data from sensors that were faulty and have been corrected into mixed-signal switching circuit 4'. In the illustrated example of FIG. 2, however, it is provided that also the internal data "Dat X" 20 are provided with check data 15 directly in the area of the data generation.
- Input interface 13 'of microcontroller 11' accepts the data and check data received via bus 16 'from mixed signal circuit 4' and outputs an error message if data and check data are not mutually compliant.
- the generation of the check data preferably takes place according to a per se known parity or CRC method.
- the data within microcontroller 11 ' are not processed in a secure manner or provided by means of other check data.
- inventive principle of complete test data transmission from data generation to data utilization in block 9 ' is consistently continued within microcontroller 8', in particular in the case of an internal transmission of the data via bus 10 '.
- the data transmission concept in FIG. 2 is thus designed so that the same data together with the same test data are checked several times on the signal path from sensor 2 'via mixed signal circuit 4' to microcontroller 11 '.
- each receiving device 13 'and 5' designed so that they can check the Pruf flowers and can output a corresponding error signal in the event of an error.
- the corresponding error signals can either be output via an error line or via the bus itself, for example as a fault word. It is particularly useful to use different error words for this, so that the type and / or location of the error can be determined. It is particularly useful in this context, if then be transferred to the passed error word suitable Pruf flowers, which in turn allow a check of the transmitted error word.
- Another preferred way to secure the entire data path, in principle, is to maintain the Pruf schemes in principle, but to consider them before each transmission as a block of user data and Pruf schemes and this in turn to expand with additional Pruf schemes.
- the invention also relates to a correspondingly secured in the opposite direction signal transmission from a microcontroller to a sensor or actuator, which may be present simultaneously or alternatively.
- the mixed signal circuit may be combined with the microcontroller to form a common electronic component or chip.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005052914 | 2005-11-03 | ||
DE102006051907A DE102006051907A1 (de) | 2005-11-03 | 2006-10-31 | Gemischtsignalschaltkreis für ein elektronisches, abgesichertes Steuer- bzw. Regelungssystem |
PCT/EP2006/067963 WO2007051792A1 (de) | 2005-11-03 | 2006-10-31 | Gemischtsignalschaltkreis für ein elektronisches, abgesichertes steuer- bzw. regelungssystem |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1943781A1 true EP1943781A1 (de) | 2008-07-16 |
Family
ID=37671143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06807682A Withdrawn EP1943781A1 (de) | 2005-11-03 | 2006-10-31 | Gemischtsignalschaltkreis für ein elektronisches, abgesichertes steuer- bzw. regelungssystem |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090307551A1 (de) |
EP (1) | EP1943781A1 (de) |
DE (1) | DE102006051907A1 (de) |
WO (1) | WO2007051792A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011080169A1 (de) * | 2011-08-01 | 2013-02-07 | Robert Bosch Gmbh | Kommunikationsanbindung für Sensorik in Fahrzeug-Regelsystemen |
DE102011116642A1 (de) * | 2011-10-20 | 2013-04-25 | Audi Ag | Übertragungseinrichtung und Verfahren zur sicheren Übertragung eines Sensorsignals an ein Übertragungsziel und Kraftfahrzeug |
US9663078B1 (en) * | 2015-12-28 | 2017-05-30 | Goodrich Corporation | Systems and methods for brake actuator operation sensor error compensation |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5163056A (en) * | 1987-10-01 | 1992-11-10 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for carrying out serial control |
KR100201580B1 (ko) | 1991-04-02 | 1999-06-15 | 후루까와 준노스께 | 다중전송시스템 |
EP1022879B1 (de) | 1993-02-15 | 2003-08-27 | Honda Giken Kogyo Kabushiki Kaisha | Vorrichtung zur Übertragung von Daten |
US6013108A (en) * | 1997-03-18 | 2000-01-11 | Endevco Corporation | Intelligent sensor system with network bus |
DE19739808C2 (de) * | 1997-09-10 | 1999-12-30 | Siemens Ag | Verfahren und Vorrichtung zur Steuerung der Datenübertragung zwischen zwei in einem Kraftfahrzeug vorhandenen Modulen |
US6820038B1 (en) * | 2001-09-04 | 2004-11-16 | Accenture Global Services Gmbh | Component provisioning or issuance in a maintenance, repair or overhaul environment |
DE10250920B4 (de) * | 2002-10-31 | 2005-05-04 | Siemens Ag | Ausgabeeinheit, Empfangseinheit, Anordnung zur Datenübertragung in einem Kraftfahrzeug sowie Verfahren dazu |
DE10343172B4 (de) * | 2003-09-18 | 2016-02-11 | Robert Bosch Gmbh | Datenübertragungsstrecke mit Einrichtung zur Prüfung der Datenintegrität |
WO2005048519A1 (en) * | 2003-11-12 | 2005-05-26 | Koninklijke Philips Electronics N.V. | Communication method, system and device |
US7869169B2 (en) * | 2006-07-14 | 2011-01-11 | William Davison | Method and system of current transformer output magnitude compensation in a circuit breaker system |
US7788055B2 (en) * | 2006-07-14 | 2010-08-31 | Square D Company | Method and system of calibrating sensing components in a circuit breaker system |
US20080243439A1 (en) * | 2007-03-28 | 2008-10-02 | Runkle Paul R | Sensor exploration and management through adaptive sensing framework |
-
2006
- 2006-10-31 DE DE102006051907A patent/DE102006051907A1/de not_active Withdrawn
- 2006-10-31 WO PCT/EP2006/067963 patent/WO2007051792A1/de active Application Filing
- 2006-10-31 EP EP06807682A patent/EP1943781A1/de not_active Withdrawn
- 2006-10-31 US US12/092,100 patent/US20090307551A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2007051792A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102006051907A1 (de) | 2007-08-30 |
US20090307551A1 (en) | 2009-12-10 |
WO2007051792A1 (de) | 2007-05-10 |
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Legal Events
Date | Code | Title | Description |
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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 |
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17P | Request for examination filed |
Effective date: 20080414 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR |
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RBV | Designated contracting states (corrected) |
Designated state(s): DE FR |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MICHEL, FRANK Inventor name: KULESCH, MANFRED Inventor name: FEY, WOLFGANG |
|
17Q | First examination report despatched |
Effective date: 20090515 |
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DAX | Request for extension of the european patent (deleted) | ||
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 |
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18D | Application deemed to be withdrawn |
Effective date: 20140503 |