EP2633641A1 - Réseau et procédé pour faire fonctionner un réseau - Google Patents

Réseau et procédé pour faire fonctionner un réseau

Info

Publication number
EP2633641A1
EP2633641A1 EP11775744.3A EP11775744A EP2633641A1 EP 2633641 A1 EP2633641 A1 EP 2633641A1 EP 11775744 A EP11775744 A EP 11775744A EP 2633641 A1 EP2633641 A1 EP 2633641A1
Authority
EP
European Patent Office
Prior art keywords
voltage
subscriber
line
central
coupling 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Withdrawn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
EP11775744.3A
Other languages
German (de)
English (en)
Inventor
Martin Döring
Olaf Krieger
Andreas Titze
Henning Harbs
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP2633641A1 publication Critical patent/EP2633641A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/10—Current supply arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40045—Details regarding the feeding of energy to the node from the bus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40039—Details regarding the setting of the power status of a node according to activity on the bus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—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 network and a method for operating a network.
  • Control units in motor vehicles can be connected via various bus systems, such as e.g. CAN, MOST, FlexRay or LIN bus systems.
  • the bus systems mentioned differ in their properties, such as e.g. a data rate of data to be transmitted, plug and cable types, number of connectable to the bus control units, maximum allowable cable length, etc.
  • a power supply of the control units can be made from an electrical system, usually via so-called terminals.
  • Control units can only be supplied with energy when needed or constantly from a vehicle electrical system.
  • Ethernet In contrast to CAN, FlexRay and LIN bus systems, Ethernet allows DC-free communication. In case of Ethernet realized bus systems can thus a
  • Communication signal usually an AC signal
  • the control unit comprises a coupling unit for feeding and / or for detecting a signal, wherein the coupling unit has a common potential with another connected to the bus system Unit uses.
  • control units from a vehicle electrical system are supplied with energy, then there may be a need to transform a voltage level of the vehicle electrical system voltage to a voltage level of an operating voltage of the respective control unit.
  • a voltage level of the vehicle electrical system voltage i.a. so-called switching regulators and so-called series regulators can be used.
  • Switching regulator is an input voltage of the switching regulator periodically switched on and off and given to a memory element. Depending on the ratio of on and off time is at the output. the switching regulator or the memory element a specific
  • the technical problem arises of providing a network and a method for operating a network, which is a reduction of network elements, in particular
  • the network is preferably a DC-free network, in particular an Ethernet network.
  • the network comprises a central participant and at least a first participant.
  • the central subscriber can be a central control unit, in particular a so-called gateway.
  • the first subscriber may be a peripheral controller.
  • the network may include other participants in addition to the first participant.
  • the central participants and the at least one first participant are connected via at least a first cable.
  • further subscribers can be connected to the central subscriber via additional cables in each case. Overall, this results in a so-called
  • the central subscriber comprises at least one signal coupling unit and at least one power coupling unit.
  • the signal coupling unit is an AC voltage auf josgbar on at least a first line of the first cable or tapped from this.
  • the AC voltage serves to transmit data for communication between the central subscriber and the first subscriber. Communication is possible bidirectionally.
  • sending data characterizes e.g. the central subscriber has a corresponding AC voltage on the at least first line of the first cable.
  • the central subscriber accesses the corresponding AC voltage from the at least first line of the first cable.
  • the power coupling unit is a DC voltage with predetermined
  • Voltage level can be impressed on the first line of the first cable.
  • the AC voltage and the DC voltage can therefore be impressed simultaneously on the first line of the first cable. It is therefore possible to modulate the AC voltage to the DC voltage.
  • the at least one first subscriber also comprises a signal coupling unit and at least one energy coupling unit.
  • the signal coupling unit is a
  • the signal coupling unit is used for bidirectional communication with the central subscriber by means of a signal impressed on the first line
  • DC voltage that can be impressed from the central subscriber to the first line of the first cable can be tapped from the at least first line of the first cable.
  • the first DC voltage is a first operating voltage of the first
  • Energy coupling unit of the first subscriber can be transformed into the first operating voltage of the first subscriber. Furthermore, the first operating voltage can be applied to at least one first input of the first subscriber.
  • the first DC voltage is in this case a first operating voltage of the first subscriber or in such a transformable. It thus corresponds to a supply voltage required for the operation of the subscriber, for example a control unit, for example one Supply voltage of 5 V.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • the first subscriber may have several inputs to which voltages with different voltage levels can be applied.
  • Operating voltage to supply a microcontroller of the first participant serve.
  • a second operating voltage can serve a voltage supply of memory units of the first subscriber.
  • the first participant comprises a signaling unit or the first participant is assigned a signaling unit, wherein by means of
  • Participant a demand signal is generating bear.
  • the demand signal is from the
  • Signaling unit to the central subscriber via at least one of the first and the central subscriber line connecting, for example, the first line of the first cable, transferable.
  • a sleep state denotes an energy-saving state of the first participant.
  • a power supply of the first subscriber takes place in such a way that, when awakened, he is put out of the sleep state into an operating state which is the same as the operating state which the first subscriber had when activating this sleep state. This. constitutes the essential difference to the disconnected state of the subscriber.
  • the first participant When switched off from the off state, the first participant in a
  • Initial state offset which usually does not correspond to the operating state in which the first participant was turned off. Also, an energy requirement is the first. Participant in the off state less than in the sleep state.
  • the demand signal serves for signaling a communication requirement of the first party.
  • a switched-off state or sleep state therefore, the energy consumption of the first subscriber decreases in comparison with a service or
  • waking may also be initiated upon signaling of a need for communication by the first party.
  • backward awakening advantageously allows a simple operation of the network, which is inexpensive from a control logic, in the so-called subnetwork mode.
  • the term backward awakening here comprises the waking up or turning on signaling a need to communicate the first participant.
  • a demand signal may be generated, for example, if a communication requirement of the first party is detected.
  • a communication requirement of the first subscriber can be made by evaluating signals from a sensor which is assigned directly to the first subscriber.
  • the sensor Under a direct assignment, e.g. be understood that the sensor is physically connected to an input interface of at least the first participant, for example via at least one line.
  • the sensor may be directly connected to the input interface of at least the first subscriber, i. that signals of the sensor directly to the first participant and not about other participants to the first participant, such as. in a bus system.
  • the sensor may be hardwired to the first party. It can also be understood by a direct association that the sensor is physically connected exclusively to the first subscriber, for example via at least one line.
  • the senor can also be a control element which can be operated manually, e.g. by a motor vehicle driver, is operable.
  • the sensor may be an operating element of an electric window, wherein the operating element is physically connected to a control unit of the servomotor for adjusting the window pane.
  • the control unit of the servomotor is in this case the first participant according to the invention. Operates e.g. one
  • Participant detected and thus generates a demand signal.
  • the associated sensor generated generating a demand signal can be realized in an advantageous manner independent of a central logic backward awakening.
  • the sensor no longer has to be connected to a central control unit, for example the central one
  • Participants physically, for example via lines, be connected to a
  • the demand signal can be detected by means of the central subscriber, wherein the first DC voltage of the first subscriber can be impressed by means of the energy coupling unit of the central subscriber at least on the first line of the first cable, if the demand signal is detected.
  • DC voltage of the first participant this is from a disconnected state switched on or woken up from a sleep state.
  • the first participant must advantageously no longer be connected to a vehicle electrical system or be connected to this, the power supply when the first participant is woken up or turned on.
  • the central subscriber is connected to other subscribers in addition to the first subscriber, a central energy supply for the first and the further subscribers can be provided by the central subscriber.
  • switching elements for the electrical connection of the first and the further subscribers with the vehicle electrical system can advantageously be saved for the first and all other subscribers.
  • a demand voltage with a predetermined voltage level can be generated by means of the signaling unit as a demand signal, wherein by means of the
  • Energy coupling unit of the first participant the demand voltage on at least one of the first and the central participant connecting line, for example, the first line of the first cable, can be imprinted.
  • the demand voltage may be a
  • the demand voltage can be tapped from the first line and to a
  • Detection input of the central participant can be applied.
  • an evaluation unit of the central participant is evaluated whether the voltage applied to the detection input voltage exceeds a predetermined voltage level. Further, by means of the energy coupling unit of the central subscriber, the first DC voltage can be impressed on at least the first line of the first cable, if the voltage applied to the detection input is the
  • a level of the required voltage is less than a level of the first operating voltage of the first subscriber and / or an operating voltage of the central subscriber. Is e.g. a level of the first operating voltage of the first
  • Subscriber 5 V may be a level of the required voltage, for example, 2 volts. If a level of the required voltage is lower than a level of an operating voltage of the central subscriber, the required voltage can not be used to wake up or switch on the central subscriber and in particular not to supply power to the central subscriber
  • Demand voltage or a transmitted from the first participant to the central subscriber DC voltage can be supplied with energy.
  • a level of the required voltage may be smaller than the levels of all the operating voltages of the first subscriber. This results in an advantageous manner, that little energy for signaling a communication needs to be transmitted from the first participant to the central participant, whereby the backward-awakening is designed to save energy.
  • the signaling unit of the first. Participant at least one switching unit.
  • the signaling unit can be connected to a voltage source.
  • the voltage source can be a battery or a
  • the signaling unit may additionally comprise at least one voltage converter; wherein the voltage converter is connectable by means of the switching unit with the voltage source.
  • an output voltage of the voltage source may be higher or lower than the level of the required voltage.
  • the voltage source may be e.g. be the electrical system or the electrical system battery.
  • the voltage converter is a level of the output voltage of the voltage source to the level of the required voltage convertible. The demand voltage is thus applied to at least the first line of the first cable when the switching unit establishes an electrical connection between the signaling unit and the voltage source.
  • the switching unit can in this case be controlled by means of a control unit, the control unit e.g.
  • the switching unit may be directly connected to the sensor, which is assigned directly to the first participant. This results in an advantageous manner that a demand signal regardless of a state of the first subscriber, in particular independent of an off state or a sleep state of the first
  • the energy coupling unit of the first subscriber comprises at least one voltage converter, wherein by means of the at least one
  • the first operating voltage is variable in their voltage level.
  • the changed in their voltage level first operating voltage can be applied to at least one other input of the first participant.
  • the first participant comprises e.g. a first input to the power supply of a microcontroller and a second input for the supply of memory units, so by means of the voltage converter from the first line of the first cable tapped DC voltage, in this case the first
  • Operating voltage corresponds to be transformed so that it can be applied to the second input, whereby energy for supplying the memory units can also be transmitted via the first line of the first cable.
  • Energy coupling unit of the first subscriber comprise further voltage converter, by means of which the tapped DC voltage is transformable to a voltage level of further inputs of the first subscriber.
  • the first cable comprises a second line, wherein by means of the energy coupling unit of the central subscriber, a further DC voltage of the first subscriber can be imposed on the second line of the first cable.
  • the further DC voltage may be a further operating voltage of the first subscriber or be transformable into the further operating voltage, for example by means of a voltage converter, the part of
  • a voltage level of the further DC voltage is equal to the voltage level of the first DC voltage, wherein the further DC voltage can likewise be applied to the first input of the first subscriber.
  • the further DC voltage can likewise be applied to the first input of the first subscriber.
  • Participant can be applied.
  • the first line of the first cable for supplying power to the first input of the first subscriber For example, for the power supply of a microcontroller of the first subscriber, can be used, wherein the second line for powering the second input of the first subscriber, for example, to power storage units of the other subscriber, can be used.
  • the energy coupling unit of the first participant may comprise at least one further spahnungswandler, wherein by means of at least one further
  • the further operating voltage is variable in its voltage level, wherein the voltage in its voltage level changed voltage to the further input or to the first input of the first subscriber can be applied.
  • the predetermined voltage level of the second DC voltage impressed on the second line of the first cable corresponds to a ground potential, wherein the second DC voltage can be tapped from the second line of the first cable and applied to a ground input of the first subscriber by means of the energy coupling unit of the first subscriber.
  • the lines of the first cable are mainly for communication between the central subscriber and the first subscriber.
  • DC resistance, a length and a current flow through the first and / or second line is to be selected.
  • a first operating voltage impressed by the central subscriber should be chosen such that a voltage drop across the first and / or second line is taken into account.
  • the voltage converter can be a previously explained longitudinal regulator.
  • the DC voltage tapped from the first line of the first cable can be lowered in its voltage level.
  • the network is in this case designed according to the previously described embodiments of the network.
  • a communication state of the first subscriber is by means of a signal coupling unit of the central participant a AC voltage impressed on at least a first line of a first cable or tapped from it, wherein by means of an energy coupling unit of the central participant, a first DC voltage having a predetermined voltage level is impressed on the first line of the first cable.
  • the communication state designates an active state of the first subscriber which does not correspond to a deactivated state or a sleep state of the first subscriber.
  • the first subscriber comprises a signaling unit, wherein a demand signal is generated by means of the signaling unit in a switched off or dormant state of the first subscriber in the case of a communication requirement, the demand signal from the signaling unit to the central subscriber via at least one connecting the central and the first subscriber Line is transmitted.
  • FIG. 1 is a schematic overview of a network according to the invention
  • FIG. 2 is a schematic representation of a central subscriber
  • FIG. 3 is a schematic representation of a first subscriber
  • FIG. 4 is a schematic representation of a central and a first subscriber
  • FIG. 5 is a schematic representation a further embodiment of a first
  • Fig. 6 is a schematic representation of another embodiment of a first
  • Fig. 7 is a schematic representation of another embodiment of a first
  • Fig. 8 is a schematic representation of another embodiment of a
  • the network 1 comprises a central subscriber 2, which can also be referred to as a gateway. Furthermore, the network 1 comprises a first subscriber 3, a second subscriber 4, a third subscriber 5 and a fourth subscriber 6.
  • the central subscriber 2 is connected to the first subscriber 3 via a first cable 7. Analogously, the central subscriber 2 is connected to the subscribers 4, 5, 6 via a second cable 8, a third cable 9 and a fourth cable 10.
  • the central participant 2 thus serves as a star point in a so-called
  • the central subscriber 2 comprises a microcontroller 11 with a so-called MAC unit (Media Access Control Unit) 12. Furthermore, the central subscriber 2 comprises an Ethernet switch 13 and for each to the central subscriber 2
  • MAC unit Media Access Control Unit
  • an energy coupling unit 14 which is designed as a DC voltage coupler.
  • a structure of a further subscriber 3, 4, 5, 6 is explained by way of example in the structure of the first subscriber 3.
  • the first subscriber 3 likewise comprises an energy coupling unit 15, which is likewise designed as a DC voltage coupler.
  • Subscriber 3 has a microcontroller 16 with an internal MAC unit 17, to which a physical layer 18 of the network, ie the Ethernet, is connected. Furthermore, the first subscriber 3 comprises a control unit periphery 19 for executing predetermined ones
  • the MAC unit 17 of the first subscriber 3 contained in the microcontroller 16 regulates an Ethernet communication with the central subscriber 2.
  • the Ethernet switch 13 of the central user 2 converts in the transmission direction digital signals of the MAC unit 12 in analog transmission signals and distributes them in a so-called point-to-point communication to the respective communication branches, which are used as cable 7, 8, 9, 10 are shown.
  • the physical layer 18 digitizes these analog signals again.
  • the microcontroller 11 of the central subscriber 2 are the microcontroller 11 of the central subscriber 2 .
  • Network information available From this it is possible to derive a need for communication with regard to the further subscribers 3, 4, 5, 6.
  • the further subscribers 3, 4, 5, 6 can be selectively switched on or off as required. This switching on or off is done by turning on or off ' one by means of
  • the first participant 3 is in the Energy coupling unit 15, the DC voltage disconnected from Kommunikatiohssignal.
  • the DC voltage is used here for the power supply of the microcontroller 6, wherein the communication signal (Ethernet signal) of the MAC unit 17 is supplied.
  • the microcontroller 16 can switch on the control device periphery 19 and thus operate, for example, the input / output interface (IO interface) of the first user 3.
  • the energy coupling units 14 in this case couple a DC voltage to lines 21, 22 of the cables 7, 8, 9, 10, which is provided by a central voltage source 20.
  • the impressed DC voltage serves as the operating voltage of the other
  • the first subscriber 3 requires a first operating voltage of 5 V, a second operating voltage of 3.3 V and a third operating voltage of 1.6 V.
  • the second subscriber 4 requires a first operating voltage of 5 V and a second operating voltage of 3.3 V.
  • the third subscriber 5 requires a first operating voltage of 5 V and a second operating voltage of 1.6 V.
  • the fourth subscriber 6 requires a first operating voltage of 3.3 V and a second operating voltage of 1.6 V.
  • the energy coupling units 14 of the central subscriber and / or the energy coupling units 15 of the further subscribers 3, 4, 5, 6 comprise voltage transformers, by means of which the voltage provided by the central voltage source 20 to the required operating voltages of the other
  • a central logic of the network management is integrated in the central subscriber, which advantageously results in a complexity of the
  • Network management is reduced and a robustness of the network is increased. Since the combination of active and disconnected further participants 3, 4, 5, 6 is arbitrary, thus can be realized in an advantageous manner any subnetwork operation.
  • FIG. 2 is a schematic view of a central participant 2 is shown.
  • a signal coupling unit of the central subscriber 2 in this case comprises a first capacitance C1, a second capacitance C2, a first inductance L1 and a second inductance L2.
  • the first capacitance C1 and the first inductance L1 are arranged in the first line 21 of the first cable 7.
  • the second capacitance C2 and the second inductance L2 are in a second line 22 of the first cable 7 is arranged.
  • the capacitors C1, C2 are used to decouple the central subscriber 2 from a DC voltage to be applied to the first line 21.
  • the inductors L1, L2 serve here as common mode choke (common mode choke).
  • This common mode choke has several equal but bifilar wound windings, which are in opposite directions flowed through by a working current. Their magnetic fields in the core of the common mode choke cancel each other out.
  • the common mode choke serves to dampen spurious emissions (EMI).
  • EMI spurious emissions
  • Central subscriber 2 comprises an inductance L3, wherein via the inductance L3, which is used to block high frequencies of the communication serving AC voltage, a first DC voltage, for example, in the amount of 5 V, can be placed on the first line 21.
  • a first DC voltage for example, in the amount of 5 V
  • Voltage source 20 is provided.
  • a first participant 3 is shown schematically. This includes a
  • this signal coupling unit comprises a first inductor L4 and a second inductor L5 of the signal coupling unit of the first subscriber 3.
  • the capacitors C3, C4 and the inductors L4, L5 in this case have the same functionality as the previously explained capacitors C1, C2 and inductors L1, L2 of the signal coupling unit of a central station 2.
  • An energy coupling unit 15 of the first subscriber 3 includes i.a. a coil L6, over which a first
  • Energy coupling unit 15 a first series regulator 24 and a second series regulator 25.
  • About the first series regulator 24 is impressed on the first line 21 DC voltage corresponding to the first operating voltage, to a voltage level of 3.3 V and to a second input 26 of the first Participant 3 created.
  • Longitudinal regulator 25 is a voltage level of the first operating voltage on
  • FIG. 4 shows a schematic interconnection of a central subscriber 2 and a first subscriber 3, a so-called reverse awakening being explained with reference to the circuit shown in FIG.
  • the central subscriber 2 has a detection input 28. By means of the detection input is impressed on a first line 21
  • the central station 2 has a switching output 29.
  • a switch 30 is switchable, which connects a central voltage source 20 with the first line 21 via an inductance L3.
  • a signaling unit of the first subscriber 3 has a voltage converter 31 and a diode 32. Furthermore, the signaling unit has a switch 33. By means of the switch 33 is the
  • Voltage converter 31 with an electrical system 34 electrically connected.
  • the voltage converter 31 in this case transforms the level of a vehicle electrical system voltage in the amount of e.g. 12V to a lower level, e.g. 2.7 V.
  • About the diode 32 additionally falls a so-called
  • the Voltage converter 31 and the diode 32 the level of the vehicle electrical system voltage to a level of a required voltage, e.g. 2 V, transformed down.
  • the demand voltage of 2 V is then impressed on the first line 21.
  • the required voltage serves as
  • Microcontroller 1 1 of the central subscriber 1 can be integrated, it is evaluated whether the voltage applied to the detection input 28 voltage exceeds a predetermined voltage level, in particular the predetermined voltage level of the required voltage. If the voltage applied to the detection input 28 exceeds the predetermined voltage level, then the switch 30 is controlled by means of the switching output 29 such that it is closed and the central voltage source 20 is coupled to the first participant 3 via the inductance L3. As a result, a first DC voltage impressed on the first line 21 and the first subscriber 3 supplied with an operating voltage.
  • FIG. 5 is a schematic block diagram of the power supply of a first
  • the first participant 3 is constructed as shown in Fig. 3.
  • the first input 23 of the first subscriber 3 and the first and the second longitudinal exciter 24, 25 are electrically connected by means of an inductance L7 to the second line 22 of the first cable 7.
  • Also on the second line 22 can by means of a
  • FIG. 6 shows a voltage supply of a first input of a first subscriber 3 via a first line 21 and a voltage supply of a second and a third input 26, 27 with a lower voltage level by means of a second line 22.
  • a first DC voltage e.g. in the amount of 5 V, which corresponds to a first operating voltage
  • This is tapped off via an inductance L6 from the first line 21 and applied to a first input 23 of the first subscriber 3.
  • the energy coupling unit 14 or another energy coupling unit of the central participant 2 is a second
  • Operating voltage corresponds to impressed on the second line 22. This is picked off via an inductance L7 from the second line 22 and applied to a second input 26 of the first subscriber.
  • L7 inductance
  • the tapped from the second line 22 second operating voltage to a comparison with this second
  • Fig. 7 is shown in contrast to Fig..6 that the first operating voltage in the amount of 5 V, first, to the first input 23 of the first subscriber 3 and a first
  • Longitudinal regulator 24 is applied to a second input 26 of the first subscriber 3.
  • a lower operating voltage compared to the first operating voltage e.g. in the amount of 1, 3 V, is applied as a second DC voltage to a second line 22 of the in Fig. 1
  • Imprinted illustrated first cable 7. By means of an inductance L7 this is tapped from the second line 22 and applied to a third input 27 of the first participant 3.
  • the tapped from the second line 22 second operating voltage is used as maintenance voltage for registers or memory states.
  • Processors or memory stored information is preserved. This can also be referred to as a so-called freeze state.
  • the first subscriber 3 can be quickly put back into its previous state (state when switching off or falling asleep) when connecting the first DC voltage in the amount of 5 V. A time-consuming booting or initializing could thus be omitted.
  • FIG. 8 shows that a second DC voltage of 0 V is impressed via a second line 22, ie that the second line 22 has a ground potential, in particular a potential of a vehicle ground. Via an inductance L8, this ground potential can be tapped off from the second line 22 and applied to a ground input 35 of a first subscriber 3. As a result, a first subscriber 3 can be operated without separate connection to a vehicle ground in an advantageous manner.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Dc Digital Transmission (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

L'invention concerne un réseau, notamment dans un véhicule à moteur, le réseau (1) comprenant un abonné central (2) et au moins un premier abonné (3); l'abonné central (2) et ledit au moins premier abonné (3) étant reliés par au moins un premier câble (7); l'abonné central (2) comportant au moins une unité de couplage de signaux et au moins une unité de couplage d'énergie (14); l'unité de couplage de signaux permettant d'appliquer une tension alternative à au moins un premier conducteur (21) du premier câble (7) ou de l'en prélever; l'unité de couplage d'énergie (14) permettant d'appliquer une première tension continue d'un premier niveau prédéfini au premier conducteur (21) du premier câble (7); Ledit au moins premier abonné (3) comportant au moins une unité de couplage de signaux et au moins une unité de couplage d'énergie (15); l'unité de couplage de signaux permettant de prélever une tension alternative dans ledit au moins premier conducteur (21) du premier câble (7) ou bien de la lui appliquer; l'unité de couplage d'énergie (15) permettant de prélever la tension continue dans ledit au moins un premier conducteur (21) du premier câble (7) et de l'appliquer à au moins une première entrée (23) du premier abonné (3); la tension continue étant une première tension de service du premier abonné (3); le premier abonné (3) comportant une unité de signalisation ou bien une unité de signalisation étant affectée au premier abonné (3); l'unité de signalisation pouvant générer un signal de demande lorsque le premier abonné (3) est hors tension ou en mode veille; le signal de demande pouvant être envoyé par l'unité de signalisation à l'abonné central (2) via au moins une ligne reliant le premier abonné (3) et l'abonné central (2). L'invention concerne également un procédé pour faire fonctionner un réseau (1).
EP11775744.3A 2010-10-27 2011-10-24 Réseau et procédé pour faire fonctionner un réseau Withdrawn EP2633641A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010049834A DE102010049834A1 (de) 2010-10-27 2010-10-27 Netzwerk und Verfahren zum Betreiben eines Netzwerks
PCT/EP2011/005348 WO2012055526A1 (fr) 2010-10-27 2011-10-24 Réseau et procédé pour faire fonctionner un réseau

Publications (1)

Publication Number Publication Date
EP2633641A1 true EP2633641A1 (fr) 2013-09-04

Family

ID=44862942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11775744.3A Withdrawn EP2633641A1 (fr) 2010-10-27 2011-10-24 Réseau et procédé pour faire fonctionner un réseau

Country Status (5)

Country Link
US (1) US9442543B2 (fr)
EP (1) EP2633641A1 (fr)
CN (1) CN103181116B (fr)
DE (1) DE102010049834A1 (fr)
WO (1) WO2012055526A1 (fr)

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Also Published As

Publication number Publication date
DE102010049834A1 (de) 2012-05-03
US9442543B2 (en) 2016-09-13
CN103181116B (zh) 2015-11-25
WO2012055526A1 (fr) 2012-05-03
CN103181116A (zh) 2013-06-26
US20130275784A1 (en) 2013-10-17

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