EP4490883A1 - Dispositif comprenant un appareil de communication pour le transfert de données par l'intermédiaire d'un bus de transfert de données, et système de transfert de données comprenant des dispositifs de ce type - Google Patents

Dispositif comprenant un appareil de communication pour le transfert de données par l'intermédiaire d'un bus de transfert de données, et système de transfert de données comprenant des dispositifs de ce type

Info

Publication number
EP4490883A1
EP4490883A1 EP23712171.0A EP23712171A EP4490883A1 EP 4490883 A1 EP4490883 A1 EP 4490883A1 EP 23712171 A EP23712171 A EP 23712171A EP 4490883 A1 EP4490883 A1 EP 4490883A1
Authority
EP
European Patent Office
Prior art keywords
bus
data transmission
side connection
supply
data
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.)
Pending
Application number
EP23712171.0A
Other languages
German (de)
English (en)
Inventor
Johannes Ante
Torsten Reitmeier
Daniel Luszek
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Vitesco Technologies 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 Vitesco Technologies GmbH filed Critical Vitesco Technologies GmbH
Publication of EP4490883A1 publication Critical patent/EP4490883A1/fr
Pending 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]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5038—Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5061—Pools of addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5092—Address allocation by self-assignment, e.g. picking addresses at random and testing if they are already in use
    • 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
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/618—Details of network addresses
    • H04L2101/627—Controller area network [CAN] identifiers

Definitions

  • the present invention relates to a device with a communication device for data transmission via a data transmission bus and to a data transmission system having at least one such device.
  • Such devices and data transmission systems implemented with them are known from the prior art in various designs.
  • An example is a data transmission system often used in vehicles with a so-called CAN ("Controller Area Network") bus (data transmission bus), on which one or more control devices and a large number of other devices, e.g. each having at least one actuator and / or at least one sensor , are connected, these devices each being equipped with a CAN transceiver including a CAN interface (communication device) in order to send and/or receive data via the CAN bus.
  • CAN Controller Area Network
  • each device connected to the data transmission bus requires a unique address (identification), that is, only assigned once in the data transmission system, in order to use this address to identify the sending device when sending data (sender) and/or to identify the device intended for this purpose (recipient) with regard to the receipt of data.
  • a fixed address of a device can, for example, be specified corresponding (in a specific assignment) to a component identification, such as "part number", which is usually defined for the device anyway for logistical reasons.
  • the disadvantage here is, for example, the need for a central control device to assign the individual device addresses.
  • the implementation of the above-mentioned communications of the measured parameters as well as the assigned addresses via the data transmission bus requires, for example, a certain amount of effort or adjustments to the communication devices in the devices and the central control device, which are not provided for, for example, according to common data transmission standards.
  • this object is achieved in a device of the type mentioned at the outset in that the electrical contacts further comprise an additional contact, that the device has a voltage measuring device which is designed to measure a potential applied to the additional contact in relation to the to measure the first supply potential and/or in relation to the second supply potential, and that the communication device is designed to assign an address to the device for sending and/or receiving the data via the data transmission bus, which is determined by the communication device depending on the at the Additional contact measured potential is selected from several different predetermined addresses.
  • the data transmission bus is a CAN bus.
  • the invention can also be used for any other data transmission system in which addressable data transmission, i.e. with device addresses, is provided.
  • the invention can advantageously be used to assign a large number of different addresses and thus a large number of identical devices can be used in a data transmission system.
  • the communication device is designed to select the address from at least four different predetermined addresses.
  • each sensor must have its own CAN address, which is clearly defined by its respective installation position.
  • Each sensor can automatically set the CAN address required at the respective installation position according to its position. For this purpose, each sensor measures the potential at the additional contact and then selects its address from several different predetermined addresses depending on the measured potential.
  • a simple way to provide the potential (hereinafter also referred to as "POT") to an additional contact of a device in a defined manner is to use the first supply potential (hereinafter also referred to as "GND”) and the second supply potential (hereinafter also referred to as “GND”) as “VS”) to divide the provided supply voltage VS - GND (hereinafter also referred to as VBAT) by means of a voltage divider formed from two or more resistors, at least one resistor of this voltage divider being arranged on the bus side.
  • Each device can then, for example, measure the voltage between the additional contact and the first supply contact and thus determine the potential POT, for example as a proportion of VBAT.
  • the potential POT for example as a proportion of VBAT.
  • five differently set potentials POT1 to POT5 can be provided as follows:
  • POT1 0% VBAT (corresponding to GND)
  • each device can then select its respective address ADR (in the example: CAN ID) from 5 different predefined addresses ADR1 to ADR5 based on the corresponding stored voltage thresholds as follows:
  • the communication device is designed to evaluate a case in which the measured potential POT corresponds to the first supply potential GND or the second supply potential VS as an error case.
  • the values of the supply potentials GND, VS are not possible (permissible) values for the potential POT.
  • five differently set potentials POT1 to POT5 could be provided as follows:
  • the communication device is designed to select the address (ADR) to be assigned to the device according to an assignment table, through which non-overlapping and preferably spaced subareas within the potential range between the first supply potential (GND) and the second supply potential (VS) and addresses assigned to these subareas are defined.
  • the communication device is designed to evaluate a case in which the measured potential (POT) is not within one of the predetermined sub-ranges as an error case (and, for example, an error message using an im to send the device's fixed error address via the data transmission bus).
  • POT measured potential
  • the way in which the potential POT is provided (e.g. the values of the resistors used to form the voltage dividers mentioned) in connection with the sub-areas is provided in such a way that one, two or all three of the following errors Based on the resulting (incorrect) potential, POT can be identified and distinguished from one another: Error 1: Short circuit of the additional contact to GND; Error 2: Additional contact open; Error 3: Short circuit of the additional contact on VBAT.
  • the potential POT can be provided at the additional contact of each device by means of a voltage divider formed from resistors, with at least one resistor of the voltage divider having to be arranged on the bus side, i.e. outside the device. This is in order to realize a voltage division for each device, the result of which (divided voltage or potential POT) depends on the position of the device and therefore a different address ADR can be selected for each position.
  • said at least one resistor of the relevant voltage divider can advantageously be designed in particular in the relevant bus-side connection device.
  • Accommodating the (at least one) resistor in the bus-side connection device has the advantage that no additional electrical Line connection (e.g. additional cable or additional line in a data transmission bus line arrangement) is necessary, which connects the resistor to the bus-side connection device.
  • additional electrical Line connection e.g. additional cable or additional line in a data transmission bus line arrangement
  • one bus-side resistor is arranged outside the relevant bus-side connection device (e.g. a plug connector of this connection device) and via an additional line connection to the relevant bus-side connection device (and the bus-side connection device located there Additional contact) is connected.
  • the device-side connection device has one or more electrical plug connectors (e.g. "plugs” or “sockets”), which are used in pairs with corresponding bus-side electrical (counter) plug connectors (e.g. "for connecting the device to the data transmission bus”). Sockets" or “plugs" of the bus-side connection device can be connected.
  • said at least one bus-side resistor can thus advantageously be formed in particular in a plug connector (mating connector) of the relevant bus-side connection device in order to connect the bus-side additional contact to the bus-side first supply contact or to the bus-side second supply contact.
  • Two resistors can also be formed in the relevant bus-side connection device or in a plug connector thereof, of which one resistor (also referred to below as “third resistor”) connects the bus-side additional contact with the bus-side first supply contact and the other resistor (hereinafter also referred to as “Fourth resistor”) connects the bus-side additional contact with the bus-side second supply contact.
  • the device has a first resistor, via which the additional contact is connected to the first supply contact, and/or a second resistor, via which the additional contact is connected to the second supply contact.
  • the first resistor and/or the second resistor of the device can advantageously be arranged in particular within the device-side connection device.
  • a data transmission system which has: a data transmission bus (e.g. CAN bus), which has at least one data line for transmitting a data signal, a first supply line for transmitting a first supply potential and a second supply line for transmitting a different second supply potential, at least one device of the type described here connected to the data transfer bus, for each device connected to the data transfer bus there is a bus-side connection device provided on the data transfer bus with bus-side electrical contacts, which are used in pairs for connecting the respective device to the data transfer bus are connected to the corresponding electrical contacts of the device-side connection device of the respective device and comprise at least one bus-side data contact for transmitting the data signal, a bus-side first supply contact for transmitting the first supply potential, a bus-side second supply contact for transmitting the second supply potential, and a bus-side additional contact, wherein the data transmission system for each of the at least one bus-side connection device provided on the data transmission bus further comprises: a data transmission bus (e.g. CAN bus), which has at least one data line for
  • the at least one bus-side connection device each has one or more bus-side electrical plug connectors, which can be connected in pairs to corresponding electrical plug connectors of the device-side connection device of the respective device in order to connect the respective device to the data transmission bus.
  • the resistance arrangement formed from the third resistor and/or the fourth resistor is formed at least partially, in particular completely, in the relevant bus-side connection device.
  • the device-side and bus-side connection devices can each have one or more electrical plug connectors, which can be connected to one another in pairs to connect the device in question to the data transmission bus.
  • the connection devices provided on the device side and on the bus side for each device connected to the data transmission bus are each implemented by a single plug connector.
  • these connectors each contain (at least) all of the electrical contacts required within the scope of the invention, i.e. the at least one data contact, the first supply contact, the second supply contact and the additional contact.
  • connection devices to be connected to each other for each device are each implemented by a plurality of plug connectors or alternatively by a plug connector and at least one different type of electrical connection device.
  • the connection between the first supply contacts (potential GND) and/or the connection between the second supply contacts (potential VS) it is possible to implement these structurally separately from the other contact connections of the data transmission system.
  • an on-board electrical system can be provided anyway for distributing a supply voltage (e.g. battery voltage), which has lines for distributing a first supply potential and/or a second supply potential.
  • a supply voltage e.g. battery voltage
  • such an on-board network can optionally supply one or more devices used within the scope of the invention with the potential GND and/or potential VS and thus represent a functional component of the data transmission bus in the sense of the invention.
  • the potential GND is identical to a "ground potential" that is already distributed in a vehicle, for example over a (metallic) body, it should not be ruled out that one or more of the devices can be connected directly to an adjacent part through an electrical connection This body is supplied with the potential GND.
  • the data transmission system further has a control device connected to the data transmission bus with a communication device for sending and / or receiving data via the data transmission bus, the bus-side connection device provided for each data transmission bus consisting of the third resistor and / or the The resistance arrangement formed by the fourth resistor is at least partially, in particular completely, formed in the control device and via an additional line is connected to the relevant bus-side connection device.
  • a preferred use of the devices within the scope of the invention is, for example, for a data transmission system in a vehicle.
  • the devices provided according to the invention can, for example, represent or have sensors (e.g. for exhaust gas aftertreatment, battery monitoring, hydrogen measurement, etc.) and/or actuators (e.g. for actuating mechanically adjustable interior or exterior components, pumps such as coolant pumps, fans, etc.).
  • FIG. 1 shows a device according to a first exemplary embodiment
  • FIG. 3 shows a connection device of a device according to a third exemplary embodiment
  • FIG. 4 shows a data transmission bus including a bus-side connection device for connecting a device, according to a first exemplary embodiment
  • FIG. 5 shows a data transmission bus including a bus-side connection device for connecting a device, according to a second exemplary embodiment
  • FIG. 6 shows a flowchart of a method for automatically assigning an address after connecting a device to a data transmission bus, according to a first exemplary embodiment
  • Fig. 7 is a flowchart of the method for automatically assigning the address according to a second exemplary embodiment.
  • the device 1 shows a device 1 with a communication device 10 for sending and/or receiving data via a data transmission bus (not shown in FIG. 1) and with a device-side connection device 20 for connecting the device 1 to the data transmission bus.
  • the device 1 is a sensor device implemented by means of a microcontroller and used in a vehicle with a sensor 40 for measuring one or more specific measured values at a location in the vehicle (e.g.
  • the communication device 10 is designed as a CAN transceiver with a CAN interface in order to communicate the measured values via the data transmission bus, which in this case is designed as a CAN bus, to other devices and / or a central control device of the vehicle that is also connected to the data transmission bus.
  • the CAN transceiver and its CAN interface can be implemented with the help of software and viewed as functional components of the microcontroller mentioned.
  • the communication device 10 and accordingly the data transmission bus could, however, be provided according to a different data transmission standard or data transmission protocol.
  • the device-side connection device 20 for example an electrical connector connected via an electrical line arrangement (e.g. connecting cable piece) to an assembly having the components 10 and 40, as symbolized in FIG. 1, has electrical contacts K1 -K5 in the example shown, which are used to connect the device 1 can be connected to the data transmission bus in pairs with corresponding bus-side electrical contacts (not shown in FIG. 1) of a bus-side connection device provided on the data transmission bus (see, for example, 20 'in FIG. 4).
  • the device-side connection device 20 (plug connector), symbolized only schematically as a single block in FIG. 1, can generally be implemented within the scope of the invention by one or more electrical plug connectors and/or one or more other types of electrical connection devices.
  • the only essential thing is that the electrical contacts K1 -K5 can be connected in pairs to corresponding bus-side electrical contacts.
  • the example uses the following contacts provided in accordance with the CAN standard:
  • connection device 20 has another contact:
  • the device 1 also has a voltage measuring device 30, which is preferably structurally combined with the components 10 and 40, for example on a common "device circuit board". At least when the device 10 is started up, the potential POT applied to the additional contact K5 is measured by means of the voltage measuring device 30 in relation to the first supply potential GND.
  • the communication device 10 is designed to assign the device 1 an address for sending and/or receiving the data (data transmission), here in particular for sending the measurement data obtained by means of the sensor 40, via the data transmission bus, which is determined independently by the communication device 10 becomes.
  • This address is selected from several different predetermined addresses depending on the potential POT measured at the additional contact K5.
  • these predetermined addresses are stored in a memory device of the communication device 10, for example in the form of a lookup table (assignment table).
  • the communication device 10 is preferably designed to select the address to be assigned to the device 1 from at least four different predetermined addresses.
  • Fig. 4 shows a data transmission bus 2 with a bus side
  • Connection device 20' for connecting a device of the type described here. It is assumed below by way of example that the bus-side connection device 20' shown in FIG. 4 is provided for connecting the device 1 shown in FIG. 1. For the sake of simplicity of illustration, only a single connection device 20 'is shown in FIG. 4, ie the additional bus-side connection devices that exist in practice for connecting further devices to the data transmission bus 2 are not shown in FIG.
  • the data transmission bus 2 has the following lines:
  • the bus-side connection device 20' has electrical contacts K1'-K4' that are electrically connected to these lines and an additional contact K5', which when the two connection devices 20, 20' are connected in pairs with the corresponding electrical contacts K1-K4 and K5 of the device-side connection device 20 be connected (K1 ' with K1 , K2' with K2 etc.).
  • both resistors R3, R4 are housed in the bus-side connection device 20 'as shown, with the resistor R3 being arranged between the additional contact K5' and the first supply contact K3' and the resistor R4 between the additional contact K5' and the second supply contact K4 'is arranged.
  • Resistor (R4) formed resistance arrangements (voltage divider) all differ from each other in such a way that the respective predetermined potentials (POT) also all differ from one another.
  • all other devices (not shown) connected to the data transmission bus 2 can then independently assign the address required for sending and/or receiving data based on the result of a measurement of the respective potential POT.
  • Termination at the ends of the data transmission bus in question which is required in many applications, e.g. a 120 Ohm termination of the lines for CANL and CANH at the beginning (e.g. formed by a control unit) and at the end of the CAN line, can be done in particular, for example, in the relevant bus-side Connection devices (e.g. plug connectors) must be provided for the two devices in question.
  • suitable terminations which can, however, be activated or deactivated individually on the individual devices using a respective switch device.
  • Fig. 2 shows a device 1a with a communication device 10a for sending and/or receiving data via a device (not shown in Fig. 2). Data transmission bus and with a device-side connection device 20a for connecting the device 1a to the data transmission bus.
  • a special feature of the device 1a compared to the device 1 already described (FIG. 1) is that the device 1a also has a resistor R1, via which the additional contact K5 is connected to the first supply contact K3, and a resistor R2, via which the Additional contact K5 is connected to the second supply contact K4.
  • both resistors R1, R2, as symbolized in FIG. 2 are structurally combined with the components 10a, 30a, 40a, for example housed on a circuit board provided for these components.
  • the potential POT can be understood more clearly in this way, for example, that any arbitrary predeterminable "base potential” with the value (R1 / (R1 + R2)) x VBAT within the interval [GND, VS] is specified on the device side by the voltage divider R1, R2, which, however, is still “shifted” due to the parallel connection of the bus-side voltage divider R3, R4 (and therefore different for each of the individual devices).
  • a “base potential” is provided by appropriately selecting the resistance values of R1 and R2, which is in a “middle range” of the interval [GND, VS] and is, for example, at least 5% VBAT, in particular at least 10% VBAT and, for example, at most 95% VBAT, in particular at most 90% VBAT.
  • the "shifted base potential" (potential at the additional contact K5) due to the effect of the parallel-connected bus-side voltage divider R3, R4 can be specified anywhere within the interval [GND, VS].
  • the base potential can also be shifted as desired using just one of the two resistors (R3, R4) shown. If the base potential (e.g. 25% VBAT) is to be shifted to a lower value (e.g. 20% VBAT), then an appropriately sized resistor R3 is sufficient and if the base potential is to be shifted to a higher value (e.g. 30% VBAT), so An appropriately sized resistor R4 is sufficient for this.
  • a voltage divider made of resistors R1, R2 is designed to provide a base potential in a medium potential range, for example 25% VBAT.
  • a single additional resistor in each bus-side connection device is sufficient, for example:
  • Device position 1 Additional contact via R4 high-resistance to VBAT,
  • the resistors R3 and R4 mentioned can each be arranged in the relevant bus-side connection device or, for example, arranged in a control device and connected via an additional line (e.g. cable) to the relevant device or the relevant device-side connection device.
  • a device detects such an error (illegal value of POT)
  • it can be provided, for example, that the device logs on with another "error" address that is not used for normal data transmission and provides corresponding error information (e.g. error code ), whereby this error information specifies the error case in more detail (e.g. through the measured value of POT).
  • error information e.g. error code
  • another device connected to the data transfer bus e.g. diagnostic or control device
  • FIG. 3 illustrates a modification of the device 1a of FIG.
  • the modification compared to the device 1 a (FIG. 2) already described is that the resistors R1 and R2, which form the voltage divider on the device side, are arranged in the area of the device-side connection device 20b, for example in an electrical plug connector.
  • FIG. 5 shows a data transmission bus 2a with a bus-side connection device 20a' for connecting a device of the type described here, for example the device 1 shown in FIG. 1.
  • the data transmission bus 2a again has the lines L1 -L4 already described above with reference to FIG. 4 for transmitting the signals CANL, CANH and potentials GND, VS, and the bus side Connection device 20a' has the electrical contacts KT-K4' electrically connected to these lines L1 -L4 as well as the additional contact K5' for providing the potential POT for a device (not shown in the figure) connected to the connection device 20a'.
  • control device 50a with a communication device 60a, which is also connected to the data transmission bus 2a as shown and, for example, represents a central control device in a vehicle and in this context carries out control tasks in the vehicle, for example by controlling those connected to the bus 2a Actuator devices and/or by querying measured values from sensor devices connected to bus 2a.
  • a control device 50a with a communication device 60a, which is also connected to the data transmission bus 2a as shown and, for example, represents a central control device in a vehicle and in this context carries out control tasks in the vehicle, for example by controlling those connected to the bus 2a Actuator devices and/or by querying measured values from sensor devices connected to bus 2a.
  • the resistors R3, R4 forming a bus-side voltage divider are not housed in the bus-side connection device 20a ', but (in this example both) in the control unit 50a as shown, with the resistor R3 between an additional line L5 and the first supply line L3 is arranged and the resistor R4 is arranged between the additional line L5 and the second supply line L4, and the additional line L5 along the remaining bus lines L1 -L4 (parallel to these) up to the location of the connection device 20a 'and from there continues into the connection device 20a' and is there electrically connected to the additional contact K5'.
  • connection device 50a with the corresponding electrical contacts for connection to the lines of the bus 2a is not shown (in this case, the resistors R3, R4 can also be connected between the corresponding respective contacts). be arranged in such a connection device).
  • resistors R3, R4 which form a respective bus-side voltage divider, can also be accommodated in the control device 50a and through a respective further electrical connection such as an additional line (e.g. running parallel to the other bus lines) with the relevant further bus-side connection device and the additional contact provided therein can be connected.
  • a plurality of devices of the type described here such as a plurality of devices according to one of the exemplary embodiments of FIGS. 1, 2 and 3, together with an associated data transmission bus, on which these devices (and possibly independently also at least one additional device such as in particular, for example, a control device with, for example, a fixed device address) is connected, a data transmission system in which the devices can advantageously assign themselves an address for communication via the data transmission bus.
  • An advantageous use of the invention arises, for example, in a vehicle or other machine with an internal combustion engine, whereby an exhaust gas aftertreatment system with several different catalytic converters is installed and there is a need to measure variables such as the NOx content and/or lambda at up to five in the exhaust gas path to measure consecutive points and to communicate them to a control unit.
  • the devices designed as sensor devices in this case may be required, for example, at the following locations: (1) location at the beginning of the exhaust gas path (raw emissions), (2) location after the pre-catalyst, (3) location after the storage catalytic converter, (4) location after the first SCR Catalyst, (5) position after second SCR/barrier catalytic converter.
  • completely identical sensor devices (with, for example, the same part numbers) can advantageously be used at such different points in the exhaust gas path.
  • a controller e.g. control device mentioned above
  • FIG. 6 shows an example of a possible sequence of a method for automatically assigning an address in a device of the type described here, the operation of which is carried out by control software running in the device.
  • a step S1 the device is initialized and the control software is booted.
  • the potential POT is measured at the additional contact of the device-side connection device, implemented, for example, as a voltage measurement in relation to the first supply potential GND.
  • a step S4 it is checked whether the value of “ratio” falls within a permissible range. If this is the case, processing proceeds to a step S5, in which the correct address ADR for the device is assigned depending on this value, and then to a step S6, in which a data transfer operation of the device is carried out using the previously set device address ADR is included.
  • Fig. 7 shows an example of a method for assigning addresses that is modified from the example in Fig. 6.
  • the steps SO to S6 correspond to the steps SO to S6 already described with reference to FIG. 6.
  • step S4 in the event that the value of "ratio" checked in step S4 does not fall into a permissible range, it is provided that, based on the result of a check in step S7, processing is only carried out up to a predetermined number of times (e.g. in the range between 1 and 10) upon reaching step S7, the processing goes back to step S1, otherwise (i.e. if step S7 has been reached again after this number of times) the processing goes to a step S8.
  • a predetermined number of times e.g. in the range between 1 and 10.
  • step S8 a predetermined "error case” address is assigned for the device and then in step S9 a predetermined one is sent "Error case” message using the previously set error case address.
  • the error case message contains information about at least one detail of the relevant error case, such as in particular, for example, one or more values of the ratio "ratio" determined by the device.
  • the occurrence of the error can advantageously be detected immediately after the device in question is connected become.
  • data transmission systems with autonomous address assignment on the device side can advantageously be implemented.
  • Such systems and the data transmission bus used here e.g. CAN bus, can be advantageously used in vehicles or other technical devices such as machines.
  • the invention proposes a device (1) with a communication device (10) and with a connection device (20) for connecting the device (1) to a data transmission bus (2), the connection device (20) having electrical contacts (K1 -K5). which can be connected in pairs to corresponding bus-side electrical contacts (K1 '-K5') of a bus-side connection device (20') provided on the bus (2) for connecting the device (1) to the bus (2), and wherein the electrical Contacts (K1-K5) at least one data contact (K1, K2) for transmitting a data signal (CANL, CANH), a first supply contact (K3) for transmitting a first supply potential (GND) and a second supply contact (K4) for transmitting a different one second supply potential (VS).
  • the electrical Contacts (K1-K5) at least one data contact (K1, K2) for transmitting a data signal (CANL, CANH), a first supply contact (K3) for transmitting a first supply potential (GND) and a second supply contact (K4) for transmitting a different one second
  • the electrical contacts (K1 -K5) also include an additional contact (K5) and that the device (1) has a voltage measuring device (30) in order to measure a potential (POT) present at the additional contact (K5, K5'), and that the communication device (10) assigns the device (1) an address which (10) depends on that at the additional contact (K5) measured potential (POT) is selected from several different predetermined addresses.
  • the invention further proposes a corresponding data transmission system having such devices (1).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Small-Scale Networks (AREA)
  • Dc Digital Transmission (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

L'invention concerne un dispositif (1) comprenant un appareil de communication (10) et un appareil de connexion (20) pour connecter le dispositif (1) à un bus de transfert de données (2), l'appareil de connexion (20) comprenant des contacts électriques (K1-K5) qui peuvent être connectés par paires à des contacts électriques côté bus correspondants (K1'-K5') d'un appareil de connexion côté bus (20') placé sur le bus (2) pour connecter le dispositif (1) au bus (2), et les contacts électriques (K1-K5) comprenant au moins un contact de données (K1, K2) pour transférer un signal de données (CANL, CANH), un premier contact d'alimentation (K3) pour transférer un premier potentiel d'alimentation (GND) et un second contact d'alimentation (K4) pour transférer un second potentiel d'alimentation (VS) qui diffère du premier potentiel d'alimentation. L'objectif de l'invention est de permettre une attribution d'adresse simple et fiable pour une pluralité de dispositifs (1) connectés au bus de transfert de données (2). Cet objectif est atteint en ce que : les contacts électriques (K1-K5) comprennent également un contact supplémentaire (K5); le dispositif (1) comporte un voltmètre (30) pour mesurer un potentiel (POT) dans le contact supplémentaire (K5, K5'); et l'appareil de communication (10) attribue une adresse au dispositif (1), ladite adresse étant sélectionnée parmi une pluralité d'adresses spécifiées différentes en fonction du potentiel (POT) mesuré dans le contact supplémentaire (K5). L'invention concerne également un système de transfert de données correspondant comprenant des dispositifs (1) de ce type.
EP23712171.0A 2022-03-11 2023-03-09 Dispositif comprenant un appareil de communication pour le transfert de données par l'intermédiaire d'un bus de transfert de données, et système de transfert de données comprenant des dispositifs de ce type Pending EP4490883A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022202455.9A DE102022202455B4 (de) 2022-03-11 2022-03-11 Gerät mit einer Kommunikationseinrichtung zur Datenübertragung über einen Datenübertragungsbus, sowie Datenübertragungssystem mit derartigen Geräten
PCT/EP2023/055991 WO2023170198A1 (fr) 2022-03-11 2023-03-09 Dispositif comprenant un appareil de communication pour le transfert de données par l'intermédiaire d'un bus de transfert de données, et système de transfert de données comprenant des dispositifs de ce type

Publications (1)

Publication Number Publication Date
EP4490883A1 true EP4490883A1 (fr) 2025-01-15

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US (1) US20250202864A1 (fr)
EP (1) EP4490883A1 (fr)
JP (1) JP7741338B2 (fr)
CN (1) CN118844047A (fr)
DE (1) DE102022202455B4 (fr)
WO (1) WO2023170198A1 (fr)

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DE102023127259A1 (de) * 2023-10-06 2025-04-10 HELLA GmbH & Co. KGaA Steuergerät mit wenigstens einer Schnittstelle für einen Sensor und Anordnung aus diesem Steuergerät und dem Sensor, der über eine Leitung an die Schnittstelle des Steuergerätes angeschlossen ist
US20250379765A1 (en) * 2024-06-10 2025-12-11 Toyota Motor Engineering & Manufacturing North America, Inc. Methods, systems, and devices for simulating a connection between a vehicle connector and an accessory system

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US5670861A (en) * 1995-01-17 1997-09-23 Norvik Tractions Inc. Battery energy monitoring circuits
DE10310250A1 (de) * 2003-03-04 2004-11-25 Valeo Schalter Und Sensoren Gmbh Verfahren zur Identifizierung einer elektronischen Einheit
JP4640523B2 (ja) 2008-11-12 2011-03-02 株式会社デンソー 乗員保護システムの通信装置
WO2010141026A1 (fr) 2009-06-05 2010-12-09 Otis Elevator Company Système et procédé d'adressage automatique de dispositifs sur un réseau de communication
DE102013201106B4 (de) 2013-01-24 2014-12-11 Smiths Heimann Gmbh Busknoten und Bussystem sowie Verfahren zur Identifikation der Busknoten des Bussystems
US9013323B2 (en) * 2013-03-15 2015-04-21 Crown Equipment Corporation Pairing of a battery monitor to a communication device
GB2536053A (en) * 2015-03-06 2016-09-07 Melexis Technologies Nv Static data bus address allocation
JP6886903B2 (ja) * 2017-09-15 2021-06-16 ラピスセミコンダクタ株式会社 電池監視装置及び電池監視システム
DE102019212414A1 (de) 2019-08-20 2021-02-25 Conti Temic Microelectronic Gmbh Verfahren zur Positionserkennung eines Busteilnehmers
DE102019212415A1 (de) 2019-08-20 2021-02-25 Conti Temic Microelectronic Gmbh Verfahren zur Positionserkennung eines Busteilnehmers
DE102020104375A1 (de) * 2020-02-19 2021-08-19 Webasto SE Batteriemodul zum Aufbau eines Batteriesystems für ein Fahrzeug

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CN118844047A (zh) 2024-10-25
DE102022202455B4 (de) 2023-10-12
JP2025509447A (ja) 2025-04-11
US20250202864A1 (en) 2025-06-19
JP7741338B2 (ja) 2025-09-17
DE102022202455A1 (de) 2023-09-14
WO2023170198A1 (fr) 2023-09-14

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