WO2013143592A1 - Procédé et dispositif de transmission redondante de données critiques dans le temps - Google Patents

Procédé et dispositif de transmission redondante de données critiques dans le temps Download PDF

Info

Publication number
WO2013143592A1
WO2013143592A1 PCT/EP2012/055603 EP2012055603W WO2013143592A1 WO 2013143592 A1 WO2013143592 A1 WO 2013143592A1 EP 2012055603 W EP2012055603 W EP 2012055603W WO 2013143592 A1 WO2013143592 A1 WO 2013143592A1
Authority
WO
WIPO (PCT)
Prior art keywords
information
data
data packets
data packet
dsl
Prior art date
Application number
PCT/EP2012/055603
Other languages
German (de)
English (en)
Inventor
Franz-Josef GÖTZ
An Ninh NGUYEN
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2012/055603 priority Critical patent/WO2013143592A1/fr
Publication of WO2013143592A1 publication Critical patent/WO2013143592A1/fr

Links

Classifications

    • 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
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658—Clock or time synchronisation among packet nodes
    • H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
    • 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
    • H04L12/40169—Flexible bus arrangements
    • H04L12/40176—Flexible bus arrangements involving redundancy
    • H04L12/40182—Flexible bus arrangements involving redundancy by using a plurality of communication lines
    • 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]
    • H04L12/42—Loop 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]
    • H04L12/46—Interconnection of networks
    • H04L12/4637—Interconnected ring systems

Definitions

  • the IEC 62439-3 standard for high-availability requirements has standardized corresponding protocols "Industrial communication networks: high availability automation networks”.
  • the Parallel Redundancy Protocol PRP
  • Ring structures are supported by High-availability Seamless Redundancy Protocol (HSR) on Ethernet IEEE 802.3.
  • HSR High-availability Seamless Redundancy Protocol
  • the data D are received by the sensor Sen1 in duplicated data packets D1, D2, fed into the ring and redundantly transmitted via two disjoint paths RS3, RS4 to the coupling-out node AK.
  • the data D is the data D in each case a data packet Dx (Dl or D2) sent to the receiver PLC.
  • DAN dual ⁇ Attached Nodes
  • All packets are always sent over both ports respectively over both networks.
  • the receiver accepts the packets on both ports and ignores the later arriving packet.
  • PRP can be realized in an additional software layer in a network element or as an upstream hardware solution.
  • the redundancy concept therefore requires no switching or reconfiguration.
  • the same data must be fed through multiple end stations into the network, as shown in FIG.
  • two sensors Senl and Sen2 are shown here, which record the same measured values in parallel, Dsl and Ds2.
  • the measured values are fed into the network as in FIG. 1 in two different network elements NE1 and NE3.
  • the Auskopplerknoten AK then forwards all data packets to the receiver PLC, there must be recognized which packages such duplicated information tions Dsl, Ds2 include and then correspondingly aussortie ⁇ ren.
  • Priority Tag or Ethertype, ..
  • the end station in such cases must have the knowledge that it receives the same highly available time-critical data several times from different end stations.
  • the filtering of the "duplicates" is done by the application.
  • the object of the invention is to specify a method and a device which does not have the stated problems and makes it possible to identify duplicates of data packets in a high-availability network at an early stage and to filter them out.
  • the method provides for the transmission of information in a communication network consisting of interconnected network elements.
  • the information is redundantly determined at least twice and sent in each case at least a first data packet and a second data packet, the ⁇ sterrorismlich transmitter address information.
  • the first data packet having a first source address and the second data packet ⁇ one of which different second sender address.
  • the first and second data packets contain additional synchronized time information, and the filtering of the duplicate information is performed on the basis of the time information in the data packets.
  • the device for transmitting and filtering information in a communication network consists of interconnected network elements, with means for redundant, so duplicate detection of information, and sending in at least a first data packet and a second data packet, wherein the first data packet, a first sender address and the second data packet one of which different second Absen ⁇ der address has first means and with the first means syn ⁇ chroninstrumente second means to the first and second Da ⁇ tendigit provided with an additional synchronized Zeitinformati ⁇ ones (TS), the filtering of the redundant information enable on the basis of time information.
  • TS additional synchronized Zeitinformati ⁇ ones
  • the redundant data transmission is advantageously carried out according to the HSR protocol via a communication network which has a ring structure.
  • the filtering of a data packet redundantly transmitted is advantageously performed by a selected network element by ⁇ , said selected network element, the Verbin ⁇ dung establishes between the ring structure of the communication network and the address by a contained in the packet robadres ⁇ se recipient of the data.
  • the data packets also contain information about at least one sequence number, which facilitates the filtering of the redundant packets.
  • the Informati ⁇ ones are suitable for use in a programmable logic controller, If the sender of the information is a sensor and that information is sensor data.
  • the method is particularly advantageous if the information to be transmitted is time-critical data. Because every loss of data also means a loss of time.
  • Those data packets which contain time-critical information to be transmitted should be identified as such in a suitable manner in that the data packets are Ethernet frames in accordance with the IEEE 802.3 standard and the type field Etherframe is suitably assigned.
  • Those data packets, the time-critical alternative to be transmitted may additionally be identified as such by means of a priority tag, the data packets containing the time-critical information.
  • the embodiments of the device are analogous to those of the methods. In the following, embodiments of the invention will be described. The figures show:
  • FIG. 1 shows a first prior art, data duplicates in an annular network
  • FIG. 2 shows a second prior art, duplicate data from redundant sensor measurements
  • Figure 3 shows a first network with redundant data packets according to the invention
  • FIG. 4 shows a second network with several transmitter groups.
  • the claimed method describes a solution with whose use the previously known protocols (PRP / HSR) can nevertheless filter the redundant packets, see FIG. 3.
  • transmitter stations eg sensors
  • SEN1, SEN2 which provide the same high-availability time-critical data DS1, DS2
  • CLOCK suitable means
  • the header of the two data packets also contains the destination address DA_1. Since the two redundant data packets are fed into the communication network via different network elements NE1, NE3, the redundant data packets initially run via different paths RS4, RS3 to the coupling-out node AK from the ring topology. There, the redundant data packets due the time information TS (Timestamp) are filtered out and only one data packet Dx is routed through to the receiver.
  • TS Timestamp
  • DA_1 (combi ⁇ ned with Priority day, or Ethertype, ...) are used, and a network- ⁇ -wide unique identifier for the highly available time-critical data.
  • the proposed solution has the advantage that the media redundancy protocols known today, such as PRP and HSR, can continue to be used to set up system-redundant systems, since only the parameters used to detect duplicates require an extended interpretation.
  • Another advantage of this solution is the smooth exchange of ⁇ From From coupler nodes and end stations.
  • the solution requires no e ecting on the hardware to be used.
  • FIG. 4 shows the procedure according to the invention in a larger network with 4 transmitting stations, SEN1, SEN2, SEN3 and SEN4, two of the stations each determining and transmitting the redundant data DS1, DS2 or DS3, DS4.
  • the synchronized time information TS, TS1 is determined by the 4 timers CLOCK, CLOCK 'or CLOCK1, CLOCK1'.
  • 4 data packets DS1 to DS4 are now sent to the receiver, with DS1 and DS3 taking the same route to the ring topology via the network element NE1. It is again the task of the decoupling node AK to determine and filter out the redundant data packets. It is of course important to ensure that no more data packets are filtered than allowed.
  • the two data packets Dx, Dy which arrive at the receiver, distinguished by a value in the header, DA_1 or
  • the time information TS can be identical.

Landscapes

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

Abstract

L'invention concerne un procédé décrivant une solution permettant le filtrage des paquets de données redondants par les protocoles (PRP/HSR) connus jusqu'alors. Ce procédé se base sur le principe que des stations émettrices (par ex. des capteurs) SEN1, SEN2, SEN3, SEN4, qui fournissent les mêmes données critiques dans le temps de haute disponibilité, sont synchronisées entre elles avec la précision correspondante par des moyens appropriés CLOCK, CLOCK', de sorte que l'application exécutée sur le récepteur PLC, qui traite les mêmes données critiques dans le temps de haute disponibilité, n'est pas influencée par la provenance des données fournies par un quelconque capteur. Selon l'invention, l'information temporelle est utilisée pour reconnaitre et filtrer les duplicata à la place du numéro de séquence.
PCT/EP2012/055603 2012-03-29 2012-03-29 Procédé et dispositif de transmission redondante de données critiques dans le temps WO2013143592A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/055603 WO2013143592A1 (fr) 2012-03-29 2012-03-29 Procédé et dispositif de transmission redondante de données critiques dans le temps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/055603 WO2013143592A1 (fr) 2012-03-29 2012-03-29 Procédé et dispositif de transmission redondante de données critiques dans le temps

Publications (1)

Publication Number Publication Date
WO2013143592A1 true WO2013143592A1 (fr) 2013-10-03

Family

ID=45976905

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/055603 WO2013143592A1 (fr) 2012-03-29 2012-03-29 Procédé et dispositif de transmission redondante de données critiques dans le temps

Country Status (1)

Country Link
WO (1) WO2013143592A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106936529A (zh) * 2017-02-28 2017-07-07 南方电网科学研究院有限责任公司 用于并行冗余协议网络中的时钟输出控制方法和系统
CN111669732A (zh) * 2019-03-06 2020-09-15 乐鑫信息科技（上海）股份有限公司 一种用于在蓝牙Mesh网络中的节点处过滤冗余数据包的方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2148473A1 (fr) * 2008-07-22 2010-01-27 ABB Research Ltd Noeuds de commutation pour réseaux à forte disponibilité
US20120065907A1 (en) * 2010-09-15 2012-03-15 Kabushiki Kaisha Toshiba Measuring device, protection relay, and program product

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2148473A1 (fr) * 2008-07-22 2010-01-27 ABB Research Ltd Noeuds de commutation pour réseaux à forte disponibilité
US20120065907A1 (en) * 2010-09-15 2012-03-15 Kabushiki Kaisha Toshiba Measuring device, protection relay, and program product

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GUNZINGER D ET AL: "HSR performance evaluation; a pre-specification software implementation", EMERGING TECHNOLOGIES&FACTORY AUTOMATION, 2009. ETFA 2009. IEEE CONFERENCE ON, IEEE, PISCATAWAY, NJ, USA, 22 September 2009 (2009-09-22), pages 1 - 4, XP031575762, ISBN: 978-1-4244-2727-7 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106936529A (zh) * 2017-02-28 2017-07-07 南方电网科学研究院有限责任公司 用于并行冗余协议网络中的时钟输出控制方法和系统
CN106936529B (zh) * 2017-02-28 2018-12-07 南方电网科学研究院有限责任公司 用于并行冗余协议网络中的时钟输出控制方法和系统
CN111669732A (zh) * 2019-03-06 2020-09-15 乐鑫信息科技（上海）股份有限公司 一种用于在蓝牙Mesh网络中的节点处过滤冗余数据包的方法
CN111669732B (zh) * 2019-03-06 2021-09-07 乐鑫信息科技（上海）股份有限公司 一种用于在蓝牙Mesh网络中的节点处过滤冗余数据包的方法
US11863652B2 (en) 2019-03-06 2024-01-02 Espressif Systems (Shanghai) Co., Ltd. Method for filtering redundant data packet at node in bluetooth mesh network

Similar Documents

Publication Publication Date Title
EP2838220B1 (fr) Procédé de transmission redondante de messages dans un réseau de communication industriel et appareil de communication
EP3183851B1 (fr) Noeud de distribution, réseau d'automatisation et procédé de transmission de paquets de données sensibles au temps réel et non sensibles au temps réel
EP2625822B1 (fr) Procédé pour configurer un ou plusieurs appareils dans un réseau de communication basé sur ethernet
EP2034668B1 (fr) Système de communication hautement disponible
EP3017570B1 (fr) Dispositif de controle, noeud de reseau et procede pour l'echange des donnees sur un reseau
EP2301202B1 (fr) Dispositif de commande et/ou de surveillance et de demande de données à partir d'unités de fonction décentralisées agencées le long d'un réseau de trafic
EP2688249B1 (fr) Procédé de transmission de nouvelles dans un réseau de communication industriel pouvant fonctionner de manière redondante et appareil de communication pour un réseau de communication industriel pouvant fonctionner de manière redondante
WO2019001718A1 (fr) Procédé de réservation de voies de transmission redondantes au maximum pour la transmission de paquets de données et dispositif
EP2413538B1 (fr) Prévention de boucles de transmission dans un réseau en anneau redondant
EP3155763B1 (fr) Transmission redondante de télégrammes de données dans des réseaux de communication présentant une topologie en anneau
EP2634973A1 (fr) Appareil de communication pour un réseau de communication industriel fonctionnant de manière redondante et procédé de fonctionnement d'un appareil de communication
EP1729454B1 (fr) Dispositif et procédé pour une transmission combinée de données d'entrée-sortie dans des systèmes bus d'automatisation
EP3151476B1 (fr) Procede de trafic transversal entre deux esclaves d'un reseau de donnees en boucle
EP3363165B1 (fr) Procédé et système informatique permettant une transmission rapide de messages en temps réel à commande temporelle
AT514714A1 (de) Verfahren zur Übertragung von Nachrichten in einem Computernetzwerk sowie Computernetzwerk
WO2013143592A1 (fr) Procédé et dispositif de transmission redondante de données critiques dans le temps
EP3632056B1 (fr) Intitialisation d'un bus local
EP2242214B1 (fr) Procédé de redondance pour un réseau de données spécialisé
EP3632054B1 (fr) Determination de noeuds d'un bus de données local
EP2750310A1 (fr) Procédé de synchronisation d'horloges locales dans un réseau de communication d'un système d'automatisation industriel et appareil d'infrastructure de réseau
EP3739407A1 (fr) Procédé d'ajustement d'une topologie de communication dans un système cyberphysique
EP3739408B1 (fr) Procédé de changement de configuration dans un système cyberphysique
EP3874333A1 (fr) Procédé de transfert de données à sécurité intégrée, noeud de réseau, programme informatique et support lisible par ordinateur
WO2019001828A1 (fr) Procédé de transmission de messages dans un réseau de communication industriel pouvant fonctionner de manière redondante et appareil de communication pour la mise en œuvre dudit procédé
EP4125253B1 (fr) Procédé de transmission de données temporellement critiques, système de communication et appareil de communication couplée

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12715337

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12715337

Country of ref document: EP

Kind code of ref document: A1