EP2137030A2 - Système de communication d'un véhicule et procédé pour faire fonctionner un système de communication - Google Patents

Système de communication d'un véhicule et procédé pour faire fonctionner un système de communication

Info

Publication number
EP2137030A2
EP2137030A2 EP08736118A EP08736118A EP2137030A2 EP 2137030 A2 EP2137030 A2 EP 2137030A2 EP 08736118 A EP08736118 A EP 08736118A EP 08736118 A EP08736118 A EP 08736118A EP 2137030 A2 EP2137030 A2 EP 2137030A2
Authority
EP
European Patent Office
Prior art keywords
communication system
network
data
main operating
interface unit
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Withdrawn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
EP08736118A
Other languages
German (de)
English (en)
Inventor
Nicolai Tarasinski
Norbert Fritz
Daniel Woelk
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Priority to EP11161527A priority Critical patent/EP2335981B1/fr
Publication of EP2137030A2 publication Critical patent/EP2137030A2/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Withdrawn legal-status Critical Current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
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area 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
    • 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

Definitions

  • the invention relates to a communication system of a vehicle, in particular an industrial or agricultural utility vehicle.
  • the communication system comprises at least two main operating components and a network.
  • the vehicle and preferably at least one work function, is operable with the main operating components.
  • a main operating component has an interface unit and optionally a control unit, via which the main operating component can be controlled and / or regulated. Data or information is transferable from an interface unit of a main operating component to an interface unit of another main operating component via the network.
  • the present invention relates to a method for operating a communication system.
  • CAN bus This is a serial bus system that has been used in the automotive and automation industries for many years.
  • the CAN bus provides data transfer rates of up to a maximum of 1 Mbps under ideal conditions. Typical data transfer rates are 125 kbps, 250 kbps and 500 kbps, respectively.
  • An application subarea of CAN communication in agricultural machinery represents the communication between the tractor and the device for the exchange of control commands.
  • ISO 11783 or ISOBUS manufacturer-independent international standard
  • the present invention is therefore an object of the invention to provide a communication system of the type mentioned and further, by which the aforementioned problems are overcome.
  • a simplified architecture and / or a communication system with a higher bandwidth is to be made available.
  • the communication system of the aforementioned type is characterized in that the network connecting the interface units has an Ethernet data network.
  • an Ethernet data network is provided between all main operating components.
  • an Ethernet data network could also exist only between selected main operating components of the vehicle.
  • Vehicle suspension system in particular with active control
  • a main operating component is a larger aggregate or a larger assembly having a generally greater power consumption or power output for performing an essential function of the vehicle, such as locomotion or performance of a work function.
  • an inverter of an electrical generator is integrated into the network via an interface unit. Furthermore, an inverter of an electric motor is also connected via an n interface unit integrated into the network. At least between the two interface units, the network is designed as an Ethernet data network, which is in particular real-time capable, so that both the generator and the engine can be operated in coordination with each other.
  • a communication system server which controls the individual interface units of the main operating components.
  • the control of the individual interface units can be done centrally by means of the communication system server, which does not necessarily have to result in a star-shaped network topology.
  • the Ethernet data network is designed such that a real-time data transmission can be realized.
  • a real-time-capable data transmission can be present in particular if data transmission has taken place between at least two interface units within a predefinable time duration, wherein the predefinable time duration lies in a range of 10 ⁇ s to 10 ms.
  • Real-time-capable data transmission can also be realized in the context of a so-called deterministic data transmission.
  • data transmission takes place at predefined times. This can be provided in the form of individual data packets. Typical cycle times are around 200 ⁇ s, but they can be shorter. Within such a Cycle time, data transmission between the network subscribers is completed.
  • real-time data transmission may be present when an interface unit sends data destined for at least one other interface unit.
  • a maximum period of time can be predetermined by the sending interface unit.
  • a maximum period of time may be predetermined in some other way.
  • the receiving interface unit must receive feedback or verification of successful data transmission.
  • Real-time data transmission may also be present if an interface unit sends data intended for at least one other interface unit and the data sent to the receiver has actually arrived, e.g. after a cycle time.
  • Such concepts of real-time data transmission are known from the prior art for stationary applications in different configurations. Such a concept can either be adopted essentially unchanged for the application presented here or it can be adapted specifically to the present application.
  • the network may be wholly or largely designed according to the specifications of the following Ethernet standards:
  • Ethernet data network according to IEC SC5C (Real-Time Ethernet) is formed, can be used in an advantageous manner already certified for safety-critical applications standard.
  • the interface units can communicate with each other as a client and / or server over the network. Additionally or alternatively, it may be expedient that the network has a master and at least one slave.
  • the master can - in particular at predefined times - send a request data packet via the network to the at least one slave and / or to all interface units.
  • known or established concepts of data transmission in the network can be used, depending on which of these concepts appears expedient for the present application.
  • the frame size or the size of the data packets of the frames transmitted over the network can also be predefinable and / or variable.
  • the frame size can be set variably as a function of the information to be transmitted and / or as a function of the temporal transmission density.
  • the interface units communicate with each other according to a master-slave protocol over the network.
  • a communication system server which drives the individual interface units of the main operating components centrally, it is expedient to configure this communication system server as the master and the interface units of the main operating components as a slave.
  • the network is preferably designed such that it has a data transmission rate of at least 1 Mbit / s, preferably of 10 Mbit / s and more.
  • the individual interface units can be interconnected in different ways in the network. In this case, different topologies may be expedient, it being assumed in the following that at least two interface units or three or more interface units are interconnected at least in sections in the respective topology. Particularly preferably, at least two interface units are interconnected in the form of a line topology. Additionally or alternatively, at least two interface units may be interconnected in the form of a ring topology, a tree topology, and / or a star topology.
  • the ring topology is particularly advantageous because in the event of an interruption of the network at one point a data transfer is still possible over the remaining contiguous part.
  • the maximum data transmission rates of individual network sections may have different values, depending on the data traffic usually to be expected between the corresponding interface units.
  • the network extends to a vehicle-adaptable implement.
  • the vehicle is designed in the form of an agricultural utility vehicle and in particular in the form of a farm tractor, as a working implement, for example, a plow, a round baler, a syringe, a harrow, a seeder and / or a mower in question.
  • an implement in the context of the present invention is in particular a device that perform a work function and that are reversibly adapted to the vehicle can.
  • the network connection between the vehicle and implement can be realized via a cable connection and / or via a radio link.
  • a main operating component of the working device could be, for example, an electric motor or a converter driving this electric motor, wherein the electric motor can, for example, drive a mixing screw of a feed mixer wagon.
  • the electric motor can be supplied with electrical power via supply lines, which is generated by an electric generator provided on the vehicle and made available to the feed mixer.
  • the electric motor of the feed mixer wagon can be controlled or regulated in accordance with the speed of travel, the feed to be dispensed, the filling state of the container of the feed mixer wagon and further operating parameters.
  • Sensor data from sensors on the implement and / or on the vehicle can also be transmitted via the network.
  • Device data can be transmitted via the network, which may in particular be data relating to the registration of individual interface units on the network. Furthermore, data relating to an identification of an interface unit or identification data of interface units or main operating components or preset parameters and / or status data of these components come into consideration.
  • Process data can be transmitted alternatively or additionally via the network.
  • process data may be command data to a main operating component, input data from a main operating component, parameters of a main operating component, and / or sensor data.
  • Particularly preferred may be control data relating to an electrical power flow between an electric generator and an electric motor, which are to be transmitted between the inverter of the generator and the inverter of the electric motor.
  • both the generator and the electric motor can be arranged on the vehicle.
  • the generator is arranged on the vehicle and the electric motor is arranged on a working device which can be adapted to the vehicle.
  • Error messages can also be transmitted over the network.
  • these may include the time of an error, the type of error, the reason for the error and / or the status of a main operating component.
  • diagnostic data can be transmitted via the network, with diagnostic data in particular having operating states and / or parameters of a main operating component.
  • the interface unit is based on a single-chip technology.
  • the network communication and the control of the main operating component in a semiconductor device is summarized.
  • this enables a compact design and, on the other hand, a largely error-free and reliable network operation, since only a few individual components have to be used.
  • an interface unit can be added or removed during ongoing network operation.
  • a characteristic of the network which is also referred to as "hot plug”
  • the interface unit of the main operating component of the work implement may be on the vehicle network log in during ongoing network operation and in the Following are controlled via the network.
  • the network in particular, in agricultural implements or tractors tools are changed frequently, so that it is not necessary, for example, to shut down the network to connect another interface unit to the network and to have only a limited range of functions of the vehicle during this time.
  • At least one measure is provided with which unauthorized access to the network can be prevented.
  • a measure may include a firewall, a program routine, a password query, a user rights management and / or a cryptological procedure.
  • existing mechanisms or standards can be used.
  • Such means are provided with which the individual components of the network can be mapped to a file system.
  • Such means may in particular include routines or system components such as e.g. NFS, FPT, SFTP, RSH, SSH, Telnet, Rlogin, and / or X-Windows.
  • routines or system components such as e.g. NFS, FPT, SFTP, RSH, SSH, Telnet, Rlogin, and / or X-Windows.
  • the entire communication system can be represented to the outside in the form of a simple file or file system. This concept can be referred to as the "virtual server" of the vehicle.
  • new and / or changed software can be centrally recorded via the communication system server.
  • new firmware of individual interface units or individual main operating components In this case, it is not necessary to know the actual physical storage location of the individual data or files, since the latter is coordinated, for example, by the communication system server. A suitable addressing would be required.
  • Ethernet data network is due to its property to represent a reliable and robust network, preferably for the present application for communication of individual main operating components of the vehicle via appropriate interface units suitable.
  • the operating system for the individual interface units and / or the communication system server may be Unix or a single-nix derivative. This is a multitasking operating system that can also be equipped with real-time capabilities. Alternatively, Microsoft Windows or a corresponding derivative can be provided as the operating system for the individual interface units and / or the communication system server.
  • GUI graphical and / or multimedia user interface
  • the graphical user interface can be adapted to differently designed, widespread "look & feel" operating schemes, examples of which are known from the user interfaces of the operating systems of Microsoft Windows or Apple.Unix operating systems, and in particular Linux, provide systems under the designation KDE or as user interfaces
  • KDE Kernel Deformation
  • user interfaces can be individually configured so that, for example, they can also have the look and feel of the Microsoft Windows operating system.
  • the communication system has an interface to at least one other network and / or industry-specific software and / or software for managing industrial or agricultural utility vehicles.
  • another network may for example be the basic network of a farm with a central computer system provided there.
  • industry-specific programs can be installed, which are used for the operation, management and / or statistical evaluation of the work of the farm.
  • office and multimedia applications can be integrated into the network of the vehicle or communicate therewith or exchange data.
  • the other network may satisfy one or more of the following network specifications:
  • the communication system according to the invention has a faster data transmission and provides over the prior art - based on comparable applications - increased bandwidth available.
  • Control and regulation programs for control units and / or interface units and / or main operating components can be developed more easily and faster, since simple, automated and global programming is possible without having to explicitly connect in each case with each individual control unit with a possibly special interface. It is possible to work directly on the communication log in to the system system server and from there access all components that are interconnected via the network.
  • the communication system can be made up of components, network protocols and concepts that have been known for some time and that have proven themselves in technology. As a result, a secure and fast network communication is possible in particular. It is an available technology and standard components are available in high volumes at low material costs. It is possible to use certified standards especially for time-critical and / or security-relevant applications.
  • the communication system is designed in particular according to one of claims 1 to 33.
  • the communication system comprises at least two main operating components and a network.
  • the vehicle is operated with the main operating components.
  • a main operating component has an interface unit and optionally a control unit, via which the main operating component is controlled and / or regulated.
  • Data is transferred from an interface unit of a main operating component to an interface unit of another main operating component via the network.
  • the network connecting the interface units has an Ethernet data network.
  • Fig. 1 is a schematic representation of a first
  • FIG. 3 shows a schematic representation of an exemplary embodiment of a possible server configuration of the communication system according to the invention.
  • Fig. 1 shows a communication system 10 of a vehicle 12.
  • the vehicle 12 is in the form of a tractor, ie in the form of a agricultural utility vehicle trained.
  • Fig. 1 is indicated only with the dashed border 12, which components are assigned to the vehicle 12.
  • the communication system 10 includes a plurality of main operating components 14 and a network 16.
  • the vehicle 12 is operable with the main operating components 14.
  • an internal combustion engine 18, a transmission 20, a hydraulic system 22, a generator 24 with a generator 24 associated with the inverter 25 and several e- lectric machines, each as an electric motor or as a generator are operable.
  • this is the electric machine 26 with which a fan (not shown) for the radiator (not shown) of the cooling system is driven.
  • the electric machine 28 drives a compressor (not shown) of an air conditioner.
  • the converter 30 provides via an electrical interface (not shown) to an adapted to the vehicle implement 40 electrical energy in the form required in each case. This may be DC or AC or AC with a predetermined frequency.
  • the network 16 extends to an adaptable to the vehicle 12 working device 40, via a cable connection and / or via a radio link.
  • the working device 40 has a main operating component 44 and an interface unit 46.
  • the interface unit 46 is addable or removable to the network 16 during ongoing network operation.
  • the diagnostic system 52 can also be connected to the network 16 during ongoing network operation. With the diagnostic system 52, the components connected to the network 16 can be diagnosed.
  • the just mentioned main operating components 14 each have an interface unit 32, via which the respective main operating component 14 can be controlled and / or regulated is.
  • data may be transferred from an interface unit 32 of a main operating component 14 to an interface unit 32 of another main operating component 14 via the network 16.
  • 16 components are connected to the network, which are not considered in this embodiment as the main operating components, but control important vehicle functions or work functions. Specifically, the electromagnetically controllable hydraulic valves 34, individual sensors 36 and individual hydraulic actuators 38. These components are each assigned to an interface unit 32, via which a control of these components via the network 16 can take place.
  • the network 16 connecting the interface units 32 comprises an Ethernet data network.
  • the communication system server 42 By means of a communication system server 42, the individual interface units 32 of the main operating components 14 are activated.
  • the communication system server 42 is configured as a master, as far as the dialogue with the network 16 is concerned.
  • the interface units 32 are configured as slave in terms of network operation. Accordingly, a master-slave protocol is used between the communication system server 42 and the interface units 32.
  • At least that part of the network 16 which extends between the interface units 32 of the converter 25 and the electrical machines 26, 28 and the converter 30 is in the form of a real-time capable Ethernet data network according to the specifications of IEC SC5C.
  • the network 16 has a data transfer rate of 100 Mbps or more.
  • a vehicle operator is provided on a monitor and control unit 48, a graphical and multimedia user interface. Here, the operator can read the current status data of the vehicle 12 or its main operating components 14 and activate and / or deactivate individual operating modes of the vehicle 12.
  • a control and interface unit 49 is provided with which the operator interaction with the communication system server 42 of the vehicle 12 is accomplished.
  • the network 16 has multiple interfaces to other networks.
  • an interface 50 is provided to which a diagnostic system 52 can be connected. Diagnostic data can be transmitted via the interface 50 and thus via the network 16, diagnostic data in particular having operating states and / or parameters of a main operating component 14.
  • an interface 54 is provided, via which the vehicle 12 can for example connect to the computer system of a trader, a repair workshop and / or a basic computer system of the operator.
  • the interface 54 may be a wired connection and a conventional Ethernet connection (the vehicle is connected to a network cable in the hall). However, the interface 54 can also be designed as a radio link, which is designed according to the specifications according to IEEE 802.11 (WLAN) or IEEE 802.16 (WiMax).
  • the vehicle 12 has a vehicle navigation system 62, which via an interface 58 or a radio link of at least one satellite can receive 60 GPS position signals. Via the interface 58, the vehicle navigation system 62 can also communicate with a base station 64, which also sends a position signal and can be positioned at a field edge, so that a more accurate position determination in the field work is possible for trained in the form of a tractor vehicle 12.
  • the related portion of the network 16 is connected in a ring topology to the communication system server 42 via a real-time Ethernet data network that meets the specifications for security-critical data transmission, such as TTP (Time Triggered Protocol) or FlexRay.
  • TTP Time Triggered Protocol
  • FlexRay FlexRay
  • Fig. 2a shows in a schematic representation a plurality of interface units 32 for main operating components (not shown in Figs. 2a to 2d), which are interconnected in the form of a line topology.
  • 2b shows a schematic illustration of a plurality of interface units 32 for main operating components, which are interconnected in the form of a tree topology. Portionally, individual interface units 32 are interconnected in a line topology.
  • Fig. 2c shows in a schematic representation the interface units 32 for main operating components, which are interconnected in the form of a star topology.
  • Fig. 2d shows a schematic representation of the interface units 32 for main operating components, which are interconnected in the form of a ring topology.
  • the line and / or the ring topology are at least partially used for the communication system 10 of a vehicle 12.
  • the interface units 32 of FIG. 1 and FIGS. 2a to 2d are based on a single-chip technology.
  • 3 shows a schematic representation of an exemplary embodiment of a server configuration, as can be used, for example, for the communication system 10 shown in FIG. 1.
  • the respective path specification of the file system is given by way of example at the respective part 74.
  • the operating system for the individual interface units 32 and / or the communication system server 42 is a Unix derivative, namely Linux.
  • Measures 76 are provided with which unauthorized access to the network 16 can be prevented. These measures 76 are each in the form of a firewall.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Communication Control (AREA)

Abstract

La présente invention concerne un système de communication (10) d'un véhicule (12), en particulier d'un véhicule utilitaire agricole ou industriel. Le système de communication (10) comprend au moins deux composants principaux (14) et un réseau (16). Ces composants principaux (14) permettent de faire fonctionner le véhicule (12) et d'actionner de préférence au moins une fonction de travail. Un composant principal (14) présente une unité d'interface (32) et éventuellement une unité de commande, par l'intermédiaire desquelles le composant principal (14) peut être piloté et/ou réglé. Des données peuvent être transmises d'une unité d'interface (32) d'un composant principal (14) à une unité d'interface (32) d'un autre composant principal (14) par l'intermédiaire du réseau (16). L'invention concerne également un procédé pour faire fonctionner un système de communication (10). L'objectif de l'invention est de fournir une architecture simplifiée et/ou un système de communication à largeur de bande accrue. A cet effet, le réseau (16) reliant les unités d'interface (32) présente un réseau de données Ethernet.
EP08736118A 2007-04-12 2008-04-11 Système de communication d'un véhicule et procédé pour faire fonctionner un système de communication Withdrawn EP2137030A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11161527A EP2335981B1 (fr) 2007-04-12 2008-04-11 Système de communication destiné à un véhicule agricole

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007016804 2007-04-12
DE102007056318A DE102007056318A1 (de) 2007-04-12 2007-11-22 Kommunikationssystem eines Fahrzeugs und Verfahren zum Betreiben eines Kommunikationssystems
PCT/EP2008/054405 WO2008125614A2 (fr) 2007-04-12 2008-04-11 Système de communication d'un véhicule et procédé pour faire fonctionner un système de communication

Publications (1)

Publication Number Publication Date
EP2137030A2 true EP2137030A2 (fr) 2009-12-30

Family

ID=39744363

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08736118A Withdrawn EP2137030A2 (fr) 2007-04-12 2008-04-11 Système de communication d'un véhicule et procédé pour faire fonctionner un système de communication
EP11161527A Active EP2335981B1 (fr) 2007-04-12 2008-04-11 Système de communication destiné à un véhicule agricole

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11161527A Active EP2335981B1 (fr) 2007-04-12 2008-04-11 Système de communication destiné à un véhicule agricole

Country Status (8)

Country Link
EP (2) EP2137030A2 (fr)
JP (1) JP2010524375A (fr)
KR (1) KR20100015510A (fr)
CN (1) CN101652270B (fr)
BR (1) BRPI0809449A2 (fr)
DE (1) DE102007056318A1 (fr)
MX (1) MX2009010005A (fr)
WO (1) WO2008125614A2 (fr)

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CN101652270B (zh) 2014-06-25
MX2009010005A (es) 2009-12-08
JP2010524375A (ja) 2010-07-15
EP2335981A1 (fr) 2011-06-22
EP2335981B1 (fr) 2012-12-12
KR20100015510A (ko) 2010-02-12
DE102007056318A1 (de) 2008-10-16
WO2008125614A2 (fr) 2008-10-23
WO2008125614A3 (fr) 2009-01-15
BRPI0809449A2 (pt) 2014-09-09
CN101652270A (zh) 2010-02-17

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