EP2368341A1 - Systeme de gestion des reveils et des endormissements de calculateurs connectes a un reseau can de vehicule automobile - Google Patents

Systeme de gestion des reveils et des endormissements de calculateurs connectes a un reseau can de vehicule automobile

Info

Publication number
EP2368341A1
EP2368341A1 EP09760199A EP09760199A EP2368341A1 EP 2368341 A1 EP2368341 A1 EP 2368341A1 EP 09760199 A EP09760199 A EP 09760199A EP 09760199 A EP09760199 A EP 09760199A EP 2368341 A1 EP2368341 A1 EP 2368341A1
Authority
EP
European Patent Office
Prior art keywords
network
computers
gateway
frame
sleep
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Withdrawn
Application number
EP09760199A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jean-Michel Rocher
Jean-Yves Stineau
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP2368341A1 publication Critical patent/EP2368341A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • 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
    • H04L12/40039—Details regarding the setting of the power status of a node according to activity on the bus
    • 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]
    • H04L12/46—Interconnection of networks
    • 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
    • H04L2012/40208—Bus networks characterized by the use of a particular bus standard
    • H04L2012/40215—Controller Area Network CAN
    • 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 present invention relates to the management of the falling asleep and awakening of CAN computers (for "Control Area Network") of a motor vehicle.
  • a motor vehicle is usually equipped with several CAN networks connected to each other by gateways.
  • certain features of the vehicle driven by computer are intermittent, such as so-called “comfort” features such as air conditioning, wipers, window lifts, etc.
  • the associated computer is asleep and then woken up when needed.
  • the wakeup and sleep orders of the vehicle computers are usually centrally managed by a dedicated computer, called the "master” computer, and the CAN network to which it is connected then takes the “main” CAN network designation.
  • the other CAN networks of the vehicle are designated as “secondary” networks and the computers under the orders of the master computer take the denomination of "slave” computers.
  • the master computer For the awakening and falling asleep of a slave computer, the master computer sends on the main CAN network a control frame to the address of the latter.
  • the control frame transits if necessary through a gateway when the slave computer is connected to a secondary CAN network. Once received by the slave computer, the latter then sends back to the master computer a frame confirming the good reception of the control frame, frame that passes if necessary by the gateway.
  • the aim of the present invention is to solve the aforementioned problem by proposing a system for managing the waking and falling asleep of slave computers which substantially reduces the number of frames exchanged with the master computer, thus reducing the risk of collision of frames and accelerating the processing of frames by the master computer.
  • the object of the invention is a system for managing the awakening and falling asleep of computers connected to a secondary CAN network of a motor vehicle, the secondary CAN network being connected to a main CAN network by means of a gateway , said system comprising a master computer connected to the main CAN network and adapted to manage the awakening and falling asleep of the computers by exchange with them woofing frames and falling asleep through the gateway.
  • the gateway is able to synthesize a single wake-up and sleep frame from several wake-up and sleep frames transmitted by the computers and to send this single frame to the configured master computer to interpret the one -this.
  • the master computer is capable of transmitting a wake-up and sleep frame relative to several computers of the secondary CAN network, and the gateway is able to transmit, according to this frame, a waking and sleeping frame for each computer concerned.
  • the gateway is further adapted to implement a degraded sleep mode of computers connected to the main CAN network.
  • FIG. 1 is a schematic view of the control frames transmitted by a master computer in a vehicle equipped with primary and secondary CAN networks; and
  • FIG. 2 is a schematic view of the frames transmitted by the slave computers connected to said CAN networks.
  • a main CAN network 10 of a motor vehicle is connected to a secondary CAN network 12 through a gateway 14.
  • the main CAN network 10 comprises a master computer 16 as well as slave computers 20-22 connected to a CAN bus 24.
  • the secondary CAN network 12 comprises, for its part, slave computers 28-30 connected to a CAN bus 32, the gateway 14. being connected to both CAN bus 24 and CAN bus 32.
  • the master computer 16 manages the waking and falling asleep of each of the slave computers 18, 20, 22, 26, 28, 30.
  • the awakening or falling asleep of the slave computers 18, 20, 22 of the main CAN network 10 is realized in a conventional manner by the transmission of a control frame by the master computer 16 to the attention of each slave computer requiring access. be awake or asleep ( Figure 1).
  • Each slave computer having received the frame intended for it then transmits in turn to the master computer 16 a confirmation frame of the good reception ( Figure 2).
  • the awakening or falling asleep of the slave computers 26, 28, 30 of the secondary CAN network 12 is however achieved with the help of the gateway 14 in order to reduce the number of frames exchanged by the master computer 16 with the secondary network 12.
  • the master computer when the awakening and / or falling asleep of several slave computers of the secondary CAN network 12 is required, the master computer sends a single control frame including the addresses and commands for each of the targeted slave computers.
  • the gateway 14 receives said single control frame, extracts the information from it, then transmits to the attention of each of the slave computers involved a control frame similar to that which it would have conventionally received from the master computer 16 (FIG. ).
  • the confirmation frames of good reception are then sent by the slave computers to the master computer 14.
  • the gateway receives these confirmation frames and creates from them a single confirmation frame containing all the information contained in the messages. frames issued by calculators slaves.
  • the gateway 14 transmits this single confirmation frame on the main CAN network destined for master computer 16 which extracts from it the confirmation information transmitted by the slave computers (FIG. 2).
  • the gateway 14 forms a single confirmation frame from the frames received from the slave computers 26, 28, 30, this synthesis can be carried out in real time or from the information stored for a predetermined duration in a buffer memory. the gateway 14. In this second case, once this time has elapsed, the gateway forms the unique confirmation frame from the stored frames, transmits the frame thus formed, erases the contents of the buffer memory and resumes a new storage cycle.
  • the gateway 14 is further adapted to implement a degraded sleep mode of computers connected to the main CAN network.
  • the gateway comprises identical software components to that of the master computer 16 for managing the waking and falling asleep of slave computers.
  • the gateway then takes over from the master computer in case of failure of it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Power Sources (AREA)
EP09760199A 2008-12-18 2009-10-22 Systeme de gestion des reveils et des endormissements de calculateurs connectes a un reseau can de vehicule automobile Withdrawn EP2368341A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0858753A FR2940477B1 (fr) 2008-12-18 2008-12-18 Systeme de gestion des reveils et des endormissements de calculateurs connectes a un reseau can de vehicule automobile
PCT/FR2009/052032 WO2010070218A1 (fr) 2008-12-18 2009-10-22 Systeme de gestion des reveils et des endormissements de calculateurs connectes a un reseau can de vehicule automobile

Publications (1)

Publication Number Publication Date
EP2368341A1 true EP2368341A1 (fr) 2011-09-28

Family

ID=40671124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09760199A Withdrawn EP2368341A1 (fr) 2008-12-18 2009-10-22 Systeme de gestion des reveils et des endormissements de calculateurs connectes a un reseau can de vehicule automobile

Country Status (7)

Country Link
US (1) US9021075B2 (zh)
EP (1) EP2368341A1 (zh)
JP (1) JP2012512783A (zh)
KR (1) KR20110104520A (zh)
CN (1) CN102257768A (zh)
FR (1) FR2940477B1 (zh)
WO (1) WO2010070218A1 (zh)

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CN103064815B (zh) * 2012-12-29 2015-09-02 广东志成冠军集团有限公司 一种单spi总线控制多can接口的控制方法
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CN104691451B (zh) * 2014-12-31 2017-07-28 安徽江淮汽车集团股份有限公司 一种降低车身控制器静态功耗的方法及系统
KR101678096B1 (ko) * 2015-11-05 2016-11-23 현대자동차주식회사 통신 모듈, 그를 가지는 차량 및 그 제어 방법
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CN106218550B (zh) * 2016-07-29 2019-02-19 北京车和家信息技术有限公司 电子控制单元的控制方法、电子控制单元、系统和车辆
CN106184074B (zh) * 2016-07-29 2018-11-13 北京车和家信息技术有限公司 电子控制单元的控制方法、电子控制单元、系统和车辆
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Also Published As

Publication number Publication date
CN102257768A (zh) 2011-11-23
FR2940477B1 (fr) 2011-02-11
JP2012512783A (ja) 2012-06-07
KR20110104520A (ko) 2011-09-22
US20120030330A1 (en) 2012-02-02
US9021075B2 (en) 2015-04-28
FR2940477A1 (fr) 2010-06-25
WO2010070218A1 (fr) 2010-06-24

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