WO2013117501A1 - Station d'abonné pour un système de bus, et procédé de transmission de messages entre des stations d'abonnés d'un système de bus - Google Patents

Station d'abonné pour un système de bus, et procédé de transmission de messages entre des stations d'abonnés d'un système de bus Download PDF

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Publication number
WO2013117501A1
WO2013117501A1 PCT/EP2013/052075 EP2013052075W WO2013117501A1 WO 2013117501 A1 WO2013117501 A1 WO 2013117501A1 EP 2013052075 W EP2013052075 W EP 2013052075W WO 2013117501 A1 WO2013117501 A1 WO 2013117501A1
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WO
WIPO (PCT)
Prior art keywords
messages
frequency range
subscriber station
bus system
bus
Prior art date
Application number
PCT/EP2013/052075
Other languages
German (de)
English (en)
Inventor
Florian Hartwich
Volker Blaschke
Anton Pfefferseder
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2013117501A1 publication Critical patent/WO2013117501A1/fr

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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
    • H04L12/40169—Flexible bus arrangements
    • H04L12/40176—Flexible bus arrangements involving redundancy
    • H04L12/40189—Flexible bus arrangements involving redundancy by using a plurality of bus systems
    • 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
    • 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

Definitions

  • Subscriber station for a bus system and method for transmitting messages between subscriber stations of a bus system
  • the present invention relates to a subscriber station for a bus system and to a method for transmitting messages between subscriber stations of a bus system in which, in particular, an existing network is used for various types of data transmission.
  • Ethernet I EEE 802.3 Ethernet I EEE 802.3
  • CAN Controller Area Network
  • Signal transmission for the transmission of data usually via two or more wires, which are made in particular of copper.
  • IP Internet Protocol
  • Vehicle networking systems to which the sensors are connected, supported.
  • IP-based communication even in a fieldbus or in a vehicle-installed network to
  • PLC power line communication systems
  • the object of the invention is therefore to provide a subscriber station for a bus system and a method for transmitting messages between subscriber stations of a bus system, which solve the aforementioned problems and in particular bypass the additional cabling overhead in the installation of a high data rate communication system in parallel to an existing low data rate network installation.
  • the subscriber station for a bus system having the features of patent claim 1.
  • the subscriber station comprises a frequency filter means for passing messages in a first frequency range in which messages according to the CAN protocol for the subscriber station in the bus system can be transmitted, and for blocking messages in a second frequency range, in which
  • Messages for other subscriber stations can be transmitted at the same time and / or in a suitable or predetermined time sequence to the messages in the first frequency range in the bus system, and a transceiver for transmitting or receiving messages according to the CAN protocol in the first frequency range.
  • the object is also achieved by a subscriber station for a bus system with the features of claim 2.
  • the subscriber station comprises a frequency filter device for blocking messages in a first Frequency range in which messages according to the CAN protocol for other subscriber stations in the bus system can be transmitted, and for the passage of messages in a second frequency range in which messages for the subscriber station at the same time and / or in a suitable or predetermined time sequence to the News in the first
  • Frequency range can be transmitted in the bus system, and a transmitting / receiving device for transmitting or receiving messages in the second frequency range.
  • the subscriber stations described can each ensure that they only receive the messages, that is, data which are relevant to them or which are sent with the data transmission protocol or signal type used by them.
  • the other messages that is to say data which are likewise transmitted via the bus system, are in each case masked out by means of the frequency filter device.
  • in the bus system can be dispensed with an additional network installation in addition to or instead of the existing network installation. This is particularly advantageous because of the associated lower material usage and lower costs incurred by the installation.
  • the first frequency range is below the second
  • the messages of the subscriber station in the first frequency range are preferably in one
  • the separation between the two frequency ranges is preferably below 10 MHz.
  • the messages in the second frequency range are messages transmitted according to a multi-carrier transmission technology.
  • the messages of the subscriber station may contain video data in the second frequency range.
  • information from data from the first frequency range can also be used to control the transmission. That is, the transmitting / receiving device may be configured such that it also uses information from data from the first frequency range for controlling the transmission for transmitting data of the subscriber station in the second frequency range.
  • the aforementioned subscriber stations may be part of a bus system for the transmission of data.
  • the first subscriber station is used to send messages in the first frequency range to another first subscriber station and the second subscriber station is used to send messages in the second frequency range to another second
  • the bus system may further comprise a bus for transmitting the messages in the first frequency range between the first subscriber station and the further first subscriber station and for transmitting the messages in the second frequency range between the second subscriber station and the further second subscriber station on a bus line of the bus.
  • the second subscriber stations of the bus system are configured to transmit messages according to a multi-carrier transmission technology.
  • the second subscriber stations of the bus system may be configured to transmit video data.
  • the above object is further achieved by a method for transmitting messages between subscriber stations of a bus system with the
  • the method for transmitting messages comprises the steps of: transmitting, by means of a first subscriber station, messages in a first frequency range and according to the CAN protocol to a further first subscriber station; Sending, by means of a second subscriber station, messages in a second frequency range to one another second subscriber station; Transmitting the messages in the first frequency range and the messages in the second frequency range on a bus line of a bus via which the first and second subscriber stations are connected, wherein the messages in the first frequency range coincide and / or in an appropriate time sequence the
  • Messages in the second frequency range can be transmitted on the one bus line of the bus; Receiving, by the further first subscriber station, the messages in the first frequency range and blocking the messages in the second frequency range; and receiving, by the further second subscriber station, the messages in the second
  • the method is carried out by the subscriber stations described above and therefore offers the same advantages as the subscriber stations.
  • 1 is a simplified block diagram of a bus system according to a first embodiment
  • 2 is a diagram illustrating a spectral range of a
  • FIG. 6 is a simplified block diagram of a bus system according to a second embodiment.
  • Fig. 1 shows a bus system 1, which may be, for example, a CAN bus system, which may be used in a vehicle, in particular a motor vehicle, an aircraft, etc. or in the hospital.
  • the bus system 1 has a plurality of first subscriber stations 10 and second
  • the first subscriber stations 10 may be, for example, control devices or display devices of a motor vehicle which exchange a message 40 with each other by means of the CAN protocol.
  • the second subscriber stations 10 may be, for example, control devices or display devices of a motor vehicle which exchange a message 40 with each other by means of the CAN protocol.
  • the second subscriber stations 10 may be, for example, control devices or display devices of a motor vehicle which exchange a message 40 with each other by means of the CAN protocol.
  • Subscriber stations 20 may be, for example, devices which exchange a message 41 with one another via a suitable transmission technology, such as frequency division multiplexing (FM) and in particular Orthogonal Frequency Division Multiplexing (OFDM), which is used, for example, in the HomePlug standard.
  • FM frequency division multiplexing
  • OFDM Orthogonal Frequency Division Multiplexing
  • the HomePlug standard describes layers 1 to 3 of the ISO / OSI protocol stack (protocol stack). This will provide support for applications based on the Internet Protocol (IP), such as web services or otherwise Streaming, multimedia, and infotainment services.
  • IP Internet Protocol
  • PLC system power line communication system
  • PLC system uses the home plug standard offers the advantage of a very interference-resistant communication, since very strong interference occurs during signal transmission via power lines.
  • Fig. 2 shows a diagram of the spectral range with respect to a signal
  • a first frequency range F1 which is, for example, less than 2 MHz
  • the messages 40 can be transmitted via the bus system 1.
  • This first frequency range Fl corresponds to a frequency range in which messages 40 are transmitted in accordance with the CAN protocol or the TTCAN protocol (time-triggered CAN), CAN FD (CAN with flexible data rate), etc. become.
  • the messages 41 can be transmitted in a second time via the bus system 1 at the same time and / or in a suitable or predetermined time sequence
  • Frequency range F2 be transmitted, which is for example between 2 to 40 MHz.
  • a predetermined time sequence may mean that the time sequence has been clearly and firmly defined at an earlier point in time.
  • a suitable chronological sequence in addition to this variant, also includes a flexible time sequence determined / negotiated at the current transmission time.
  • These usually have a sin (x) / x-shaped course, which is characterized by periodically repeating local maxima and minima.
  • the frequencies fl, f2, f3 can also be frequency bands.
  • Fig. 3 shows a first subscriber station 10 and a second subscriber station 20 in more detail.
  • the first subscriber station 10 is connected via a bus stub 31 to the bus 30, which is formed from a pair of wires whose wires are made in particular of copper. According to the CAN specification, the pair of wires forms a bus line of the bus 30.
  • the first subscriber station 10 has a transmitting / receiving device 11 and a frequency filter device 12. All messages 40, 41 sent via the bus 30 pass over the
  • Frequency filter device 12 is configured to pass messages 40 in the first frequency range F1. Consequently, the arrive
  • the frequency filter device 12 is designed to block messages 41 which are located in the second frequency range F2.
  • the transceiver 11 receives only messages 40 which are in the first frequency range Fl. Since the first subscriber station 10 is also designed only for sending messages 40, which in the first
  • Frequency filter means 12 to the bus stub 31 and thus to the bus 30 passed.
  • the frequency filter device 12 for the first frequency range Fl can also be designed in such a form that it performs the function of those conventionally used in CAN subscriber stations 10
  • the second subscriber station 20 is connected via a bus stub 31 to the bus 30.
  • the second subscriber station 20 has a transmitting / receiving device 21 and a frequency filter device 22. All messages 40, 41 transmitted via the bus 30 arrive via the bus stub line 31 to the frequency filter device 22.
  • the frequency filter device 22 is designed such that it transmits messages 41 in the second Frequency range F2 lets through. As a result, the messages 41 arrive via a line 23 to the transceiver 21, which transmits messages 41 or
  • the frequency filter means 22 is configured to block messages 40 which are in the first frequency range Fl.
  • the transceiver 21 receives only messages 41 which are in the second frequency range F2. Since the second subscriber station 20 is also designed only for transmitting messages 41 which are located in the second frequency range F2, these data are also passed by the frequency filter means 22 to the bus stub 31 and thus to the bus 30.
  • the transmitting / receiving device 21 can also be configured such that information from data from the first frequency range is used to control the transmission for transmitting or transmitting the data of the subscriber station in the second frequency range.
  • Subscriber stations 20 system is used, it is physically possible
  • Subscriber stations 10 connects, are also used for a transmission of messages 41 between the second subscriber stations 20.
  • the frequency filter means 12 is preferably arranged to make a compromise of maximum possible signal attenuation and minimum required slope of the signals containing the messages 40 to ensure reliable detection of the relevant signal, more specifically the data transmitted with it, in the transmitter / receiver.
  • Participant station 10 to realize.
  • Frequency filter means 22 similarly designed to realize a secure detection of the relevant signal, more specifically, the data transmitted with it, in the transceiver 21 of the second subscriber station 20.
  • a message 40 is at a step Sl by means of the first
  • Subscriber station 10 is sent to a further first subscriber station 10.
  • a message 41 is sent by means of a second subscriber station 20 to a further second subscriber station.
  • the messages 40, 41 are transmitted on the bus line of the bus 30.
  • Frequency range F2 on the one bus line of the bus 30 are transmitted. This means that a message 40 can be sent regardless of whether there is currently a message 41 on the bus 30 at the time. The same applies analogously to the transmission of a message 41.
  • the message 40 is received in the transmitting / receiving device 11 of at least one of the further first subscriber stations 10.
  • the respective frequency filter device 12 of these further first subscriber stations 10 blocks the possible messages 41 in the second frequency range F2, which may also be transmitted on the bus 30.
  • the message 41 is received in the transmitting / receiving device 21 of at least one of the further first subscriber stations 20.
  • the respective frequency filter device 22 blocks this further second one
  • Step S2 may also take place before step S1.
  • step S5 may also take place before step S4.
  • Fig. 5 shows a modification of the first embodiment. Accordingly, the frequency filter means 22 of the second subscriber station 20, the signal in the second frequency range F2, for example, the OFDM transmission signal, which transmits the messages 41, with a
  • Matching device 25 to the frequencies / frequency bands fl, f2, f3 ( Figure 2) adapt accordingly.
  • the adjustment is made by a reduction to a shutdown of the transmission power of the respective subcarriers. This can further reduce the interference on the
  • Baseband system the existing between the first subscriber stations 10 system reached. However, it is still a data transfer in the existing between the second subscriber stations 20 system,
  • the HomePlug system that is the OFDM system, possible.
  • Fig. 6 shows to explain the second embodiment, a vehicle 60 with a camera 61, which is used as a parking aid when reversing.
  • the camera 61 is mounted in Fig. 6 at the rear of the vehicle 60, for example on the rear license plate holder.
  • the camera 61 is connected via a cable 62 to a display device 63 in a dashboard 64.
  • Display device 63 may be in a radio or navigation device of
  • Vehicle be installed, wherein the display device 63 has a video signal input, not shown.
  • a switching of the display of the display device 63 to the image of the camera 61 takes place when inserting the reverse gear of the vehicle 60, not shown, for example, controlled by the bus system 1 (FIG. 1).
  • the cable 62 is the bus 30 (FIG. 1), via which in addition to the messages 40 according to the CAN protocol, messages 41 are also transmitted, which in the concrete example may contain video data.
  • the video signal of the camera 61 is preferably transmitted continuously after engagement of the reverse gear. In addition, the time for compression and decompression of the video signal is minimized. However, it is possible to transmit the video signal of the camera 61 uncompressed when the camera 61 has a low image resolution.
  • the messages 40 may also include control data to the camera 61 according to the CAN protocol.
  • the control data is, for example, an adjustment of the viewing angle, zoom, switching to
  • the camera 61 not only includes a second subscriber station 20 of the bus system 1 as shown in FIG. 1, but the camera 61 also includes a first subscriber station 10 of the bus system 1 as shown in FIG.
  • the display device 63 is a second subscriber station 20 of the bus system 1, as shown in Fig. 1.
  • Display device 63 may, however, also comprise a first subscriber station 10 of bus system 1, as shown in FIG. 1, although this also sends and / or receives control data in the form of messages 40 according to the CAN protocol.
  • the bus line 30 may also transmit messages 41 for other applications. These messages 41 can also be transmitted in multiplex access.
  • Measures are implemented on the one hand in the physical connection to the bus by means of the frequency filter devices, and / or in the suitable adaptation of the OFDM-based communication system. All of the previously described embodiments of the bus system 1, the first and second subscriber stations 10, 20 and the method can be used individually or in all possible combinations. Any combination of the features of the first and second embodiments and the modification of the first embodiment is possible. In addition, the following modifications are conceivable, in particular.
  • the number and arrangement of the first subscriber stations 10 in the bus system 1 of the embodiments is arbitrary. In addition, the number and
  • the frequency filter device 12 of the first subscriber station 10 can be any frequency filter device 12 of the first subscriber station 10.
  • the frequency filter device 12 is preferably a low-pass filter.
  • the frequency filter device 22 of the second subscriber station 20 may be a bandpass filter which suppresses all (interfering) signal components which lie outside the frequency band transmitted by the bandpass filter in order to minimize their influence on the signal evaluation in the transceiver 21. This minimizes potential interference with the baseband bandpass filter.
  • the second frequency range F2 shown in Fig. 2 can be increased or decreased in a suitable manner.
  • the subscriber stations 10, 20 may also be shaped in such a way that they can transmit and receive data both in the first frequency range Fl and in the second frequency range F2.

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

Abstract

L'invention concerne une station d'abonné (10) pour un système de bus (1), et un procédé de transmission de messages (40; 41) entre des stations d'abonnés (10; 20) d'un système de bus (1). La station d'abonné (10) pour un système de bus (1) comprend un dispositif de filtrage de fréquence (22) pour le passage de messages (40) dans une première gamme de fréquences (F1), dans laquelle des messages (40) sont transmis, conformément au protocole CAN pour la station d'abonné (10) dans le système de bus (1), et pour bloquer les messages (40) dans une seconde gamme de fréquences (F2), dans laquelle les messages (40) pour d'autres stations d'abonnés (10) peuvent être transmis, de manière isochrone et/ou dans un ordre chronologique approprié, dans le système de bus (1), et un dispositif émetteur/récepteur (11), pour l'émission ou la réception de messages (40), conformément au protocole CAN, dans la première gamme de fréquences (F1).
PCT/EP2013/052075 2012-02-06 2013-02-01 Station d'abonné pour un système de bus, et procédé de transmission de messages entre des stations d'abonnés d'un système de bus WO2013117501A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012201675.9 2012-02-06
DE201210201675 DE102012201675A1 (de) 2012-02-06 2012-02-06 Teilnehmerstation für ein Bussystem und Verfahren zur Übertragung von Nachrichten zwischen Teilnehmerstationen eines Bussystems

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WO2013117501A1 true WO2013117501A1 (fr) 2013-08-15

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DE (1) DE102012201675A1 (fr)
WO (1) WO2013117501A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105594160A (zh) * 2013-10-02 2016-05-18 姜守元 使用带通调制的高速can通信系统
CN110489713A (zh) * 2018-05-14 2019-11-22 通用汽车环球科技运作有限责任公司 用于为控制器区域网络控制器配置过滤器对象的方法和系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218202B4 (de) * 2015-09-22 2022-10-06 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum gemeinsamen Übertragen von Daten auf einem Bus in einem Kraftfahrzeug und diesbezügliche Vorrichtungen

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DE10000305A1 (de) 2000-01-05 2001-07-12 Bosch Gmbh Robert Verfahren und Vorrichtung zum Austausch von Daten zwischen wenigstens zwei mit einem Bussystem verbundenen Teilnehmern
US20050206240A1 (en) * 2003-01-17 2005-09-22 Robert Bosch Gmbh Transmitting/receiving device for a component of a motor vehicle that is connected to a communication network
US20060262814A1 (en) * 2003-05-20 2006-11-23 Ungermann Joern Time-triggered communication system and method for the synchronization of a dual-channel network
US20070286225A1 (en) * 2004-02-24 2007-12-13 Thorsten Enders Method and Communications System for Transmitting Information in a Motor Vehicle
WO2010146002A1 (fr) * 2009-06-16 2010-12-23 Robert Bosch Gmbh Dispositif de transmission de données entre des stations utilisateurs d'un système de bus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10000305A1 (de) 2000-01-05 2001-07-12 Bosch Gmbh Robert Verfahren und Vorrichtung zum Austausch von Daten zwischen wenigstens zwei mit einem Bussystem verbundenen Teilnehmern
US20050206240A1 (en) * 2003-01-17 2005-09-22 Robert Bosch Gmbh Transmitting/receiving device for a component of a motor vehicle that is connected to a communication network
US20060262814A1 (en) * 2003-05-20 2006-11-23 Ungermann Joern Time-triggered communication system and method for the synchronization of a dual-channel network
US20070286225A1 (en) * 2004-02-24 2007-12-13 Thorsten Enders Method and Communications System for Transmitting Information in a Motor Vehicle
WO2010146002A1 (fr) * 2009-06-16 2010-12-23 Robert Bosch Gmbh Dispositif de transmission de données entre des stations utilisateurs d'un système de bus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105594160A (zh) * 2013-10-02 2016-05-18 姜守元 使用带通调制的高速can通信系统
CN105594160B (zh) * 2013-10-02 2019-04-30 Vsi 株式会社 使用带通调制的高速can通信系统
CN110489713A (zh) * 2018-05-14 2019-11-22 通用汽车环球科技运作有限责任公司 用于为控制器区域网络控制器配置过滤器对象的方法和系统
CN110489713B (zh) * 2018-05-14 2023-10-27 通用汽车环球科技运作有限责任公司 用于为控制器区域网络控制器配置过滤器对象的方法和系统

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