EP4494320A1 - Verfahren und vorrichtung zur datenkommunikation in einem fahrzeug zwischen einer ansteuervorrichtung und mehreren einheiten - Google Patents
Verfahren und vorrichtung zur datenkommunikation in einem fahrzeug zwischen einer ansteuervorrichtung und mehreren einheitenInfo
- Publication number
- EP4494320A1 EP4494320A1 EP23711068.9A EP23711068A EP4494320A1 EP 4494320 A1 EP4494320 A1 EP 4494320A1 EP 23711068 A EP23711068 A EP 23711068A EP 4494320 A1 EP4494320 A1 EP 4494320A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal pulse
- communication
- pulses
- control device
- rising edges
- 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
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
- H04L12/403—Bus networks with centralised control, e.g. polling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/87—Combinations of sonar systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
Definitions
- the invention relates to a method and a device for data communication in a vehicle between a control device and several units, which can primarily be sensors and/or actuators.
- the invention relates to a method and a device for bidirectional data exchange via at least two communication buses (such as DSI3), to each of which a control device (master) and one or more functional units (slaves) are connected.
- each US transducer is connected to the control unit via a separate communication line.
- signals are modulated, typically in the form of signal pulse trains.
- Signal modulation inevitably results in EMC radiation.
- the loads caused by EMC radiation increase. This can be counteracted by EMC-reducing measures, but this is only possible to a limited extent or with great effort if the EMC load is too high.
- the object of the invention is to create a method and a device for data communication in a vehicle in which the addition of EMC emissions is reduced despite the use of multiple communication channels.
- the invention provides a method for data communication in a vehicle between a control device and several units are proposed, which can be sensors and / or actuators, the method having several communication channels via which at least one unit is in communication connection with the control device, the communication between the control device and the units by sending Signal pulse sequences consist of pulses with rising edges of the same repetition frequency and the signal pulse sequences sent by the control device via at least two of the communication channels to the units in communication with them are phase-shifted from one another and thus the rising edges of the pulses of the one transmitted signal pulse sequence are time-shifted within the period defined by the repetition frequency the rising edges of the pulses of the or any other transmitted signal pulse sequence and/or this also applies to the falling edges of the pulses among themselves and/or the steepness of the rising edges of the pulses of one signal pulse sequence is chosen to be different from the steepness of the rising edges of the pulses of the or any other signal pulse sequence .
- the idea pursued by the invention is to use signal pulse sequences for communication between the control device and the units, which are provided with rising edge pulses of the same repetition frequency.
- the control device sends these signal pulse sequences out of phase via the individual communication channels, so that it is avoided that the rising edges of the pulses of two signal pulse sequences coincide in time, which preferably also applies to the falling edges with one another. This reduces the strength of EMC radiation.
- the units typically send “own” signal pulse sequences as responses back to the control device after a phase-shifted signal pulse sequence of the type according to the invention issued by the control device, with what was previously said in connection with the signal pulse sequence of the control device also applying to these response signal pulse sequences.
- the units can, for example, have ultrasonic transducers that can be used to monitor the surroundings of a vehicle.
- the invention is about the communication between the control device and the units and not about the emitted ultrasonic signals and their echo signals due to reflection from objects in the area surrounding the vehicle.
- the communication channels can each be data communication buses known from the prior art, such as DSI3 or the like. act.
- the data communication buses are bidirectional buses.
- the said modification reduces the radiation properties of the communication system, with a superposition of the radiation energies being prevented by the phase shift with which the individual signal pulse sequences are sent.
- phase offset As an alternative to the phase offset or in addition to this, provision can be made to select the steepness of the rising edges of the pulses of the signal pulse sequences differently.
- the signal pulse sequences sent via all communication channels are phase-shifted from one another and thus the rising edges of the pulses of one of the transmitted signal pulse sequences are time-delayed within a period of the repetition frequency to the rising edges of the pulses of every other transmitted signal pulse sequence and / or the slope the rising edges of the pulses of one of the signal pulse sequences are chosen to be different from the steepness of the rising edges of the pulses of every other signal pulse sequence.
- an electrical line in particular a cable, is selected as the communication channel.
- the electrical lines are combined at least in sections.
- a device for data communication in a vehicle between a control device and several units which can be sensors and / or actuators, with a control unit, several communication channels and several units, which are Sensors and / or actuators can act, with at least one unit being in communication connection with the control device via each communication channel, the control device for data communication with the units sending signal pulse sequences of rising edge pulses of the same repetition frequency and the control device from the control device via at least two of the Communication channels to the signal pulse sequences sent with these units in communication are phase-shifted with respect to one another and thus the rising edges of the pulses of one transmitted signal pulse sequence are time-shifted from the rising edges of the pulses of the or any other transmitted signal pulse sequence within the period defined by the repetition frequency and / or this also for the falling edges of the pulses apply to one another and/or the steepness of the rising edges of the pulses of one signal pulse sequence is selected to be different from the steepness of the rising edges of the pulses of the or any other signal
- the signal pulse sequences sent via all communication channels are phase-shifted from one another and thus the rising edges of the pulses of one of the transmitted signal pulse sequences are time-delayed within a period of the repetition frequency to the rising edges of the pulses of every other transmitted signal pulse sequence and / or the slope the rising edges of the pulses of one of the signal pulse sequences are selected to be different from the steepness of the rising edges of the pulses of every other signal pulse sequence.
- only one unit is in communication connection with the control device via at least some of the communication channels or via each communication channel.
- each communication channel is designed as a bus to which several units are connected.
- each communication channel is designed as an electrical line, in particular as a cable, and that the electrical lines are combined at least in sections.
- FIG. 1 shows an exemplary embodiment of a data communication system with four separate communication channels between a control device and four individual units that are controlled separately by the control device
- Fig. 2 shows an example of four signal pulse sequences with which the control device controls the four units.
- FIG. 1 shows a highly schematic data communication system 10, which has a control device 12 and, in this exemplary embodiment, four units 14, 16, 18, 20 to be controlled, designed for example as sensors or actuators, which can be controlled via a separate communication channel 22, 24, 26 and 28 and also sends signals back to the control unit 12 via this communication channel.
- a control device 12 and, in this exemplary embodiment, four units 14, 16, 18, 20 to be controlled, designed for example as sensors or actuators, which can be controlled via a separate communication channel 22, 24, 26 and 28 and also sends signals back to the control unit 12 via this communication channel.
- ultrasonic transducers may be mentioned, which can be installed, for example, in the front or rear bumper of a vehicle.
- the phase-shifted control or data communication of the control device 12 with the four units 14 to 20 by signal pulse trains consisting of pulses with rising edges of the same repetition frequency is shown in FIG. 2.
- the reference numbers 22', 24', 26', 28' of FIG. 2 denote the signal sequences that are sent from the control unit 12 to the units 22, 24, 26, 28.
- the signal pulse sequences are different, but can also have the same pulse sequences. It can be seen that at no time are pulses 30 with temporally coinciding rising edges 32 sent via the four communication channels 22 to 28 (see the time offsets Ati, Atz and Ats of the signal pulse sequences 24', 26' and 28' compared to the signal pulse sequence 22'). .
- the respective return signals from the units 14 to 20 controlled in this way are then shifted in time accordingly, so that there are no rising edges at the same time on the four communication channels at any time.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Dc Digital Transmission (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22161885 | 2022-03-14 | ||
| PCT/EP2023/056490 WO2023174940A1 (de) | 2022-03-14 | 2023-03-14 | Verfahren und vorrichtung zur datenkommunikation in einem fahrzeug zwischen einer ansteuervorrichtung und mehreren einheiten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4494320A1 true EP4494320A1 (de) | 2025-01-22 |
Family
ID=81326234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23711068.9A Pending EP4494320A1 (de) | 2022-03-14 | 2023-03-14 | Verfahren und vorrichtung zur datenkommunikation in einem fahrzeug zwischen einer ansteuervorrichtung und mehreren einheiten |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4494320A1 (de) |
| JP (1) | JP2025509506A (de) |
| CN (1) | CN118872237A (de) |
| DE (2) | DE102022131595A1 (de) |
| WO (1) | WO2023174940A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0813321A3 (de) * | 1996-06-14 | 2001-05-09 | TEMIC TELEFUNKEN microelectronic GmbH | Verfahren und Steuersystem zum Übertragen von Daten |
| DE102004052919A1 (de) | 2004-10-29 | 2006-05-11 | Sick Stegmann Gmbh | Verfahren und Vorrichtung zur Übertragung von Informationen |
| DE102007054981A1 (de) * | 2007-11-17 | 2009-05-20 | Ape Angewandte Physik Und Elektronik Gmbh | Sensoranordnung, Verwendung einer Sensoranordnung und Verfahren zur Entfernungsmessung |
| DE102009028350A1 (de) | 2009-08-07 | 2011-02-10 | Pmd Technologies Gmbh | Verfahren und Schaltung zur Erzeugung mehrerer phasenstarr gekoppelter Modulationssignale in unterschiedlichen relativen Phasenlagen |
| US9774442B2 (en) | 2015-04-03 | 2017-09-26 | Denso Corporation | Communication device |
| DE102017110063A1 (de) * | 2017-03-02 | 2018-09-06 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Verfahren und Vorrichtung zur Umfelderfassung |
-
2022
- 2022-11-29 DE DE102022131595.9A patent/DE102022131595A1/de active Pending
-
2023
- 2023-03-14 JP JP2024554628A patent/JP2025509506A/ja active Pending
- 2023-03-14 CN CN202380027146.2A patent/CN118872237A/zh active Pending
- 2023-03-14 DE DE102023106352.9A patent/DE102023106352A1/de active Pending
- 2023-03-14 WO PCT/EP2023/056490 patent/WO2023174940A1/de not_active Ceased
- 2023-03-14 EP EP23711068.9A patent/EP4494320A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2025509506A (ja) | 2025-04-11 |
| WO2023174940A1 (de) | 2023-09-21 |
| DE102022131595A1 (de) | 2023-09-14 |
| CN118872237A (zh) | 2024-10-29 |
| DE102023106352A1 (de) | 2023-09-14 |
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