FR2723807A1 - Frame pulse data communication system e.g. between central unit and vehicles - Google Patents

Frame pulse data communication system e.g. between central unit and vehicles Download PDF

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Publication number
FR2723807A1
FR2723807A1 FR9410121A FR9410121A FR2723807A1 FR 2723807 A1 FR2723807 A1 FR 2723807A1 FR 9410121 A FR9410121 A FR 9410121A FR 9410121 A FR9410121 A FR 9410121A FR 2723807 A1 FR2723807 A1 FR 2723807A1
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France
Prior art keywords
pulses
central unit
functional
pulse
information
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Granted
Application number
FR9410121A
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French (fr)
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FR2723807B1 (en
Inventor
Robert Heckel
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.)
Rockwell Body & Chassis Syst
Inteva Products France SAS
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Rockwell Body & Chassis Syst
Rockwell Body and Chassis Systems France
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Application filed by Rockwell Body & Chassis Syst, Rockwell Body and Chassis Systems France filed Critical Rockwell Body & Chassis Syst
Priority to FR9410121A priority Critical patent/FR2723807B1/en
Publication of FR2723807A1 publication Critical patent/FR2723807A1/en
Application granted granted Critical
Publication of FR2723807B1 publication Critical patent/FR2723807B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • H04L12/403—Bus networks with centralised control, e.g. polling
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/044—Speed or phase control by synchronisation signals using special codes as synchronising signal using a single bit, e.g. start stop bit

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

The system includes a central unit which passes analogue pulses in the form of frames via a bus to other units. All the frames are identical and each frame includes a synchronisation pulse (5). Several successive analogue pulse packets are each associated with a unit as a function of their rank in the frame. Each pulse packet includes a series of pulses with a first pulse controlling the state of the associated unit for data transmission or reception. Information pulses are also included which control the unit according its state.

Description

La présente invention concerne un système de communication d'informations sous forme de trames d'impulsions entre une unité centrale et différents organes fonctionnels d'un véhicule automobile, raccordés par un réseau de transmission d'informations. The present invention relates to an information communication system in the form of pulse frames between a central unit and various functional organs of a motor vehicle, connected by an information transmission network.

On connaît déjà dans l'état de la technique par exemple dans la demande de brevet FR-A-2 694 848, un système de communication d'informations de ce type, dans lequel les trames de communication comportent une impulsion de synchronisation suivie de plusieurs impulsions émises par l'unité centrale en fonction de la configuration du réseau de transmission et des organes fonctionnels dont elle souhaite piloter ou analyser le fonctionnement. Already known in the prior art, for example in patent application FR-A-2 694 848, an information communication system of this type, in which the communication frames comprise a synchronization pulse followed by several pulses emitted by the central unit as a function of the configuration of the transmission network and of the functional organs whose operation it wishes to control or analyze.

Cependant, on conçoit que cette structure présente un certain nombre d'inconvénients au niveau de la complexité de réalisation de l'unité centrale et des organes fonctionnels. However, it is understood that this structure has a number of drawbacks in terms of the complexity of production of the central unit and of the functional organs.

Le but de l'invention est donc de résoudre ces problèmes. The object of the invention is therefore to solve these problems.

A cet effet, l'invention a pour objet un système de communication d'informations sous forme de trames d'impulsions entre une unité centrale et différents organes fonctionnels d'un véhicule automobile, raccordés par un réseau de transmission d'informations, caractérisé en ce que toutes les trames sont identiques et émises par l'unité centrale et comportent chacune une impulsion de synchronisation et plusieurs paquets d'impulsions successifs analogues, associés chacun à un organe fonctionnel déterminé en fonction de son rang dans la trame, chaque paquet d'impulsions comportant une série d'impulsions comprenant une première impulsion de commande de l'état de l'organe fonctionnel associé, pilotée par l'unité centrale dans un premier ou un second état pour commander le fonctionnement de l'organe fonctionnel en réception ou en émission d'informations et plusieurs impulsions d'informa tions qui, selon l'état de fonctionnement de l'organe fonctionnel associé, sont des impulsions de commande émises par l'unité centrale en direction de l'organe fonctionnel, ou des impulsions de données relatives à cet organe fonctionnel transmises par celui-ci en direction de l'unité centrale. To this end, the subject of the invention is a system for communicating information in the form of pulse frames between a central unit and different functional organs of a motor vehicle, connected by an information transmission network, characterized in that all the frames are identical and emitted by the central unit and each comprise a synchronization pulse and several packets of successive similar pulses, each associated with a functional member determined according to its rank in the frame, each packet of pulses comprising a series of pulses comprising a first pulse for controlling the state of the associated functional member, controlled by the central unit in a first or a second state for controlling the operation of the functional member in reception or in transmission of information and several information pulses which, depending on the operating state of the associated functional organ, are control pulses sent by the central unit towards the functional unit, or data pulses relating to this functional unit transmitted by the latter towards the central unit.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels
- la Fig.l représente un schéma synoptique d'un système de communication d'informations selon l'invention; et
- la Fig.2 représente une portion de trame émise par une unité centrale en direction d'organes fonctionnels, entrant dans la constitution d'un système de communication selon l'invention.The invention will be better understood on reading the description which follows, given solely by way of example and made with reference to the accompanying drawings, in which
- Fig.l shows a block diagram of an information communication system according to the invention; and
- Fig.2 shows a portion of frame sent by a central unit towards functional organs, forming part of a communication system according to the invention.

Ainsi qu'on peut le voir sur ces figures, un système de communication d'informations sous forme de trame d'impulsions, permet de réaliser une communication d'informations entre une unité centrale désignée par la référence générale 1 et différents organes fonctionnels par exemple 2 et 3 d'un véhicule automobile, raccordés par un réseau de transmission d'informations 4. As can be seen in these figures, an information communication system in the form of a pulse frame, makes it possible to carry out information communication between a central unit designated by the general reference 1 and various functional organs for example 2 and 3 of a motor vehicle, connected by an information transmission network 4.

Les informations sont transmises sous forme de trames identiques émises par l'unité centrale 1 et comportant chacune comme on peut le voir plus particulièrement sur la figure 2, une impulsion de synchronisation désignée par la référence générale 5 suivie de plusieurs paquets d'impulsions successifs analogues, associés chacun à un organe fonctionnel déterminé en fonction de son rang dans la trame. The information is transmitted in the form of identical frames sent by the central unit 1 and each comprising, as can be seen more particularly in FIG. 2, a synchronization pulse designated by the general reference 5 followed by several successive packets of analogous pulses. , each associated with a functional organ determined according to its rank in the frame.

C'est ainsi par exemple que le paquet d'impulsions désigné par la référence générale 6 sur cette figure 2, est destiné à l'organe fonctionnel 2, tandis que le paquet d'impulsions 7 est destiné à l'organe fonctionnel 3. Thus, for example, the packet of pulses designated by the general reference 6 in this FIG. 2, is intended for the functional member 2, while the packet of pulses 7 is intended for the functional member 3.

Chaque paquet d'impulsions comporte une série d'impulsions comprenant une première impulsion de commande désignée par exemple par la référence 8 sur la figure 2 pour le paquet d'impulsions 6, cette impulsion de commande 8 permet de commander l'état de l'organe fonctionnel 2 associé et est pilotée par l'unité centrale 1 dans un premier ou un second état pour commander le fonctionnement de l'organe fonctionnel en réception ou en émission d'informations. Each packet of pulses comprises a series of pulses comprising a first control pulse designated for example by the reference 8 in FIG. 2 for the packet of pulses 6, this control pulse 8 makes it possible to control the state of the functional organ 2 associated and is controlled by the central unit 1 in a first or a second state to control the operation of the functional organ in reception or in transmission of information.

On sait en effet par exemple du document fran çais précité, que cette impulsion peut comporter une portion modulée en amplitude ou non pour commander le fonctionnement de l'organe fonctionnel en réception ou en émission d'informations. It is known, for example, from the aforementioned French document, that this pulse can comprise a portion modulated in amplitude or not to control the operation of the functional member in reception or in transmission of information.

Le paquet d'impulsions 6 comporte également plusieurs impulsions d'informations désignées de façon générale par la référence 9, qui selon l'état de fonctionnement de l'organe fonctionnel 2 associé, sont des impulsions de commande émises par l'unité centrale 1 en direction de l'organe fonctionnel 2 ou des impulsions de données relatives à cet organe fonctionnel 2, transmises par celui-ci en direction de l'unité centrale 1. The pulse packet 6 also includes several information pulses generally designated by the reference 9, which depending on the operating state of the associated functional member 2, are control pulses sent by the central unit 1 in direction of the functional organ 2 or of the data pulses relating to this functional organ 2, transmitted by the latter towards the central unit 1.

Avantageusement, l'impulsion de synchronisation 5 peut présenter une largeur multiple de la largeur des impulsions d'informations pour garantir une auto-alimentation des organes fonctionnels de façon classique. Advantageously, the synchronization pulse 5 can have a width multiple of the width of the information pulses to guarantee self-supply of the functional members in a conventional manner.

I1 va de soi également que chaque trame comporte autant de paquets d'impulsions qu'il y a d'organes fonctionnels raccordés au réseau de transmission d'informations. It also goes without saying that each frame comprises as many pulse packets as there are functional members connected to the information transmission network.

Pour de plus amples renseignements concernant la structure et le fonctionnement de l'unite centrale et des organes fonctionnels, on pourra se reporter par exemple au document français précité. For further information concerning the structure and operation of the central unit and the functional organs, reference may be made, for example, to the aforementioned French document.

On conçoit alors que le système selon l'invention présente un certain nombre d'avantages par rapport aux systèmes de l'état de la technique dans la mesure où toutes les trames sont identiques et émises par l'unité centrale de sorte que le fonctionnement de cette unité centrale et des organes fonctionnels peut être simplifié.  It can therefore be seen that the system according to the invention has a certain number of advantages compared with the systems of the state of the art insofar as all the frames are identical and transmitted by the central unit so that the operation of this central unit and functional organs can be simplified.

Claims (3)

REVENDICATIONS 1. Système de communication d'informations sous forme de trames d'impulsions entre une unité centrale (1) et différents organes fonctionnels (2,3) d'un véhicule automobile, raccordés par un réseau de transmission d'informations (4), caractérisé en ce que toutes les trames sont identiques et émises par l'unité centrale et comportent chacune une impulsion de synchronisation (5) et plusieurs paquets d'impulsions successifs analogues (6,7), associés chacun à un organe fonctionnel déterminé en fonction de son rang dans la trame, chaque paquet d'impulsions comportant une série d'impulsions comprenant une première impulsion de commande (8) de l'état de l'organe fonctionnel associé, pilotée par l'unité centrale (1) dans un premier ou un second état pour commander le fonctionnement de l'organe fonctionnel en réception ou en émission d'informations et plusieurs impulsions d'informations (9) qui, selon l'état de fonctionnement de l'organe fonctionnel associé, sont des impulsions de commande émises par l'unité centrale en direction de l'organe fonctionnel, ou des impulsions de données relatives à cet organe fonctionnel transmises par celui-ci en direction de l'unité centrale. 1. Information communication system in the form of pulse frames between a central unit (1) and different functional organs (2,3) of a motor vehicle, connected by an information transmission network (4), characterized in that all the frames are identical and transmitted by the central unit and each comprise a synchronization pulse (5) and several packets of successive analog pulses (6,7), each associated with a functional member determined according to its rank in the frame, each packet of pulses comprising a series of pulses comprising a first control pulse (8) of the state of the associated functional member, controlled by the central unit (1) in a first or a second state for controlling the operation of the functional member in receiving or transmitting information and several information pulses (9) which, depending on the operating state of the associated functional member, are imp control commands emitted by the central unit towards the functional unit, or data pulses relating to this functional unit transmitted by the latter towards the central unit. 2. Système selon la revendication 1, caractérisé en ce que l'impulsion de synchronisation (5) présente une largeur multiple de la largeur des impulsions d'informations pour garantir une auto-alimentation des organes fonctionnels. 2. System according to claim 1, characterized in that the synchronization pulse (5) has a width multiple of the width of the information pulses to guarantee self-supply of the functional organs. 3. Système selon la revendication 1 ou 2, caractérisé en ce que chaque impulsion de commande (8) comporte une portion modulée en amplitude ou non pour commander l'état de fonctionnement de l'organe fonctionnel associé.  3. System according to claim 1 or 2, characterized in that each control pulse (8) comprises a portion modulated in amplitude or not to control the operating state of the associated functional member.
FR9410121A 1994-08-18 1994-08-18 SYSTEM FOR COMMUNICATING INFORMATION IN THE FORM OF PULSE FRAMES BETWEEN A CENTRAL UNIT AND DIFFERENT FUNCTIONAL ORGANS OF A MOTOR VEHICLE. Expired - Fee Related FR2723807B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9410121A FR2723807B1 (en) 1994-08-18 1994-08-18 SYSTEM FOR COMMUNICATING INFORMATION IN THE FORM OF PULSE FRAMES BETWEEN A CENTRAL UNIT AND DIFFERENT FUNCTIONAL ORGANS OF A MOTOR VEHICLE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9410121A FR2723807B1 (en) 1994-08-18 1994-08-18 SYSTEM FOR COMMUNICATING INFORMATION IN THE FORM OF PULSE FRAMES BETWEEN A CENTRAL UNIT AND DIFFERENT FUNCTIONAL ORGANS OF A MOTOR VEHICLE.

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FR2723807A1 true FR2723807A1 (en) 1996-02-23
FR2723807B1 FR2723807B1 (en) 1996-11-08

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FR9410121A Expired - Fee Related FR2723807B1 (en) 1994-08-18 1994-08-18 SYSTEM FOR COMMUNICATING INFORMATION IN THE FORM OF PULSE FRAMES BETWEEN A CENTRAL UNIT AND DIFFERENT FUNCTIONAL ORGANS OF A MOTOR VEHICLE.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004036821A1 (en) * 2002-10-18 2004-04-29 Koninklijke Philips Electronics N.V. Data processing apparatus that identifies a communication clock frequency

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1414574A (en) * 1920-05-29 1922-05-02 Laing Robert Machine for pressing lines or designs into rollers
US4988989A (en) * 1987-10-26 1991-01-29 Sharp Kabushiki Kaisha Master-slave communication system for stations having timer means

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1414574A (en) * 1920-05-29 1922-05-02 Laing Robert Machine for pressing lines or designs into rollers
US4988989A (en) * 1987-10-26 1991-01-29 Sharp Kabushiki Kaisha Master-slave communication system for stations having timer means

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
J. DHUSE ET AL.: "Standard protocols are needed for distributed microcontrollers", DATA COMMUNICATIONS, vol. 15, no. 1, NEW YORK US, pages 171 - 175 *
M. IKEL ET AL.: "Communication algorithm for home automation local bus.", INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS, USA, pages 36 - 37 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004036821A1 (en) * 2002-10-18 2004-04-29 Koninklijke Philips Electronics N.V. Data processing apparatus that identifies a communication clock frequency

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FR2723807B1 (en) 1996-11-08

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