CA2275246A1 - Fault-resilient automobile control system - Google Patents

Fault-resilient automobile control system Download PDF

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Publication number
CA2275246A1
CA2275246A1 CA002275246A CA2275246A CA2275246A1 CA 2275246 A1 CA2275246 A1 CA 2275246A1 CA 002275246 A CA002275246 A CA 002275246A CA 2275246 A CA2275246 A CA 2275246A CA 2275246 A1 CA2275246 A1 CA 2275246A1
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CA
Canada
Prior art keywords
mcu
bus
components
scu
automobile
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.)
Granted
Application number
CA002275246A
Other languages
French (fr)
Other versions
CA2275246C (en
Inventor
William S. Wong
Lawrence W. Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microsoft Corp
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Individual
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 Individual filed Critical Individual
Publication of CA2275246A1 publication Critical patent/CA2275246A1/en
Application granted granted Critical
Publication of CA2275246C publication Critical patent/CA2275246C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2035—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant without idle spare hardware
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2028—Failover techniques eliminating a faulty processor or activating a spare
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/0315—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for using multiplexing techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W2050/0001—Details of the control system
    • B60W2050/0002—Automatic control, details of type of controller or control system architecture
    • B60W2050/0004—In digital systems, e.g. discrete-time systems involving sampling
    • B60W2050/0006—Digital architecture hierarchy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
    • B60W2050/0292—Fail-safe or redundant systems, e.g. limp-home or backup systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
    • B60W2050/0297—Control Giving priority to different actuators or systems

Abstract

A fault-resilient automobile control system integrates diverse and separate automobile components and provides fault-tolerance to component failure. The automobile control system includes a master control unit (MCU) electrically coupled via a primary data communications bus to the electronic automobile components. The MCU is master of the bus and manages data flow over the bus among the electronic automobile components. The MCU can be configured with a routing table to route data monitored in one component to one or more other components. The MCU is also capable of performing the same functions as those performed by local controllers at the eletronic components. During initialization, driver software for all of the local controllers is downloaded and stored at the MCU. In the event that a local controller fails, the MCU executes the driver software for the failed controller to remotely control the electronic automobile component in place of the failed local controller. Switching logic is installed at each of the electronic components to selectively route data to the primary bus, circumventing the failed controller. The automobile control system has a secondary control unit (SCU) electrically coupled to the MCCI via the primary bus. The SCU is a standalone computer that supports clients and other devices on a secondary support bus.
The SCU is also configured to backup the MCU. During normal operation, the SCU
is subordinate to and controlled by the MCU on the primary bus. In the event that the MCU fails, however, the SCU assumes control of the data communications network and manages the data flow among the electronic automobile components.
CA002275246A 1996-12-16 1997-12-10 Fault-resilient automobile control system Expired - Fee Related CA2275246C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/771,343 US5957985A (en) 1996-12-16 1996-12-16 Fault-resilient automobile control system
US08/771,343 1996-12-16
PCT/US1997/023030 WO1998026958A1 (en) 1996-12-16 1997-12-10 Fault-resilient automobile control system

Publications (2)

Publication Number Publication Date
CA2275246A1 true CA2275246A1 (en) 1998-06-25
CA2275246C CA2275246C (en) 2008-06-03

Family

ID=25091511

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002275246A Expired - Fee Related CA2275246C (en) 1996-12-16 1997-12-10 Fault-resilient automobile control system

Country Status (7)

Country Link
US (1) US5957985A (en)
EP (1) EP0942849B1 (en)
JP (1) JP4091126B2 (en)
KR (1) KR20000057625A (en)
CA (1) CA2275246C (en)
DE (1) DE69737308T2 (en)
WO (1) WO1998026958A1 (en)

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