EP3797478A1 - Dispositif d'optimisation des circulations des courants et de la compatibilite electromagnetique pour vehicule et vehicule comprenant un tel dispositif - Google Patents
Dispositif d'optimisation des circulations des courants et de la compatibilite electromagnetique pour vehicule et vehicule comprenant un tel dispositifInfo
- Publication number
- EP3797478A1 EP3797478A1 EP19790045.9A EP19790045A EP3797478A1 EP 3797478 A1 EP3797478 A1 EP 3797478A1 EP 19790045 A EP19790045 A EP 19790045A EP 3797478 A1 EP3797478 A1 EP 3797478A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- point
- vehicle
- electromagnetic compatibility
- signal transmission
- digital signal
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
- H04B10/801—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections
- H04B10/802—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections for isolation, e.g. using optocouplers
Definitions
- the present invention relates to the field of network equipment adapted to vehicles.
- the invention relates in particular to a device for optimizing current flows and electromagnetic compatibility for a digital signal transmission network of a vehicle.
- the invention further relates to a vehicle comprising such a device.
- the invention applies in particular to high speed transmission networks that are nowadays arranged within motor vehicles, in particular networks that operate by implementing the Ethernet protocol.
- Ethernet networks are currently in the process of being deployed at most automakers. These networks allow transmission rates of the order of 10 or 100 Mbps bidirectional, possibly full-duplex. However, this deployment is made complex by the speed of the networks (currently 200 times higher than that of CAN-type networks, the most used until now) as well as by the covered vehicle surfaces, without major changes in the characteristics of the transmission channels. communication in the beams electric (especially for economic reasons). Other Ethernet car networks are even being studied to achieve data transmission rates of the order of Gb / s, or even beyond.
- the object of the invention is to provide a device that can be used during the development phase to overcome these drawbacks.
- the object of the invention is in particular to provide a device that can be interfaced within an Ethernet network in order to study a better electromagnetic compatibility of the elements of said network, whether from the point of view of emissivity or immunity.
- Another object of the invention is to provide a device capable of participating in the suppression of mass loops in a network.
- the subject of the invention is a device for optimizing the circulation of current and the electromagnetic compatibility for a digital signal transmission network of a vehicle, the device comprising an electronic circuit provided with galvanic isolation means capable of providing galvanic isolation at at least a first point, a second point and a third point of said circuit .
- the device may comprise communication means adapted and configured to enable the device to act as a repeater according to the Ethernet protocol.
- the first point and / or the third point may be connected to a first connection member for connecting the device to a digital signal transmission medium.
- the second point can be connected to a second connection member for connecting the device to a power supply for electrically powering the device, which can advantageously be floating relative to the rest of the system.
- the isolation means may comprise at least one optocoupler.
- the device may be provided with copying means for duplicating digital signals.
- the device may comprise supply means shaped and configured to interact with an electric accumulator.
- the device may be provided with means for activating at least one direct electrical or optical connection between at least one first point and at least one second point of said circuit.
- the invention further relates to a vehicle comprising a device as described above.
- FIG. 1 is a block diagram illustrating an architecture in which is arranged a device for optimizing current flows and electromagnetic compatibility according to the invention
- FIG. 2 is a block diagram illustrating a device for optimizing current flows and electromagnetic compatibility according to the invention.
- the device for optimizing circulations and current and compatibility according to the invention evolves within an architecture of which only a part is illustrated in FIG. 1.
- a first computer system 101 communicates, via the device 100, with a second computer system 102 by means of digital signals transmitted via a communication medium 103 which forms a one-way or bidirectional communication channel (possibly in full-duplex mode) by means, for example, of cables .
- the first and second systems 101 and 102 are computers such as those found in motor vehicles.
- the systems 101 and 102 comprise one or more computers, one or more servers, one or more supercomputers and / or any combination comprising one of these computer systems.
- the systems 101 and 102 are adapted and configured to communicate by implementing the Ethernet or LVDS protocol.
- the systems 102 and 103 as well as the device 100 form with the communication medium 103 a portion of a high-speed Ethernet or LVDS network of a vehicle, for example a motor vehicle.
- the device 100 comprises an electronic circuit which is connected to a first connection member 201 to connect the device to the communication medium 103, a second connection member 202 to connect the device to the communication medium 103, a third connection member 203 to connect the device to a ground, a fourth connecting member 204 for connecting the device to a ground, a fifth connecting member 205 for connecting the device to a power supply for electrically powering the device, a sixth connecting member 206 for connecting the device to a power supply for electrically powering the device, a seventh connecting member 207 for connecting the device to a communication medium for the additional digital signal transmission and an eighth connecting member 208 for connecting the device to a communication medium for the transmission of naked signals additional costs. All connections described in this section include one or more wires.
- galvanic isolation means 209 make it possible to provide galvanic isolation at at least two distinct points of the electronic circuit of the device 100.
- these means make it possible to carry out an isolation galvanically at a first point of the circuit connected to the first and second members 201, 202 and at a fourth point of the circuit connected to the seventh and eighth members 207 and 208.
- the device according to the invention connects equipotentially (this is that is, without isolation) the third and fourth members 203 and 204 through the link 212 as well as fifth and sixth members 205 and 206 through the link 213.
- the device is able to allow the removal of ground loops and / or power supply existing in the network.
- This has the advantage of making it possible to study said loops, for example by successive bridging of the device itself, followed by comparative measurements with laboratory equipment in order to realize the necessary optimizations of the system and then to allow its appropriate operation in the absence of the device according to the invention, in particular clear of ground loops and power supply.
- the galvanic isolation means 209 further comprise hardware and / or software copying means for copying digital signals so as to provide a digital signal copy functionality that can be bidirectional.
- the invention may comprise other devices for generating digital signals capable of enabling the system to operate sufficiently to its study according to the principles of implementation 1 'invention.
- the invention can process certain analog signals instead of digital or even only analog signals. These variants can advantageously be achieved by implementing common mode inductors.
- the device further comprises activation means 210 for at least one direct electrical or optical connection between at least one first point and at least one second point of said circuit.
- the activation means 210 which may comprise one or more relays and one or more switches, make it possible to provide a direct electrical connection between the first connection member 201 and the second connection member 202, between the third member 203 and the fourth connection member 204, between the fifth connection member 205 and the sixth connection member 206 and / or between the seventh connection member 207 and the eighth connection member 208.
- the circuit of the device is further provided with power supply means 211 - electronic components, dedicated circuits and connections - which, for example by using an electric accumulator, make it possible to implement the energy autonomy of the device 100 according to the invention.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1854329A FR3081404B1 (fr) | 2018-05-23 | 2018-05-23 | Dispositif d’optimisation des circulations des courants et de la compatibilite electromagnetique pour vehicule et vehicule comprenant un tel dispositif |
| PCT/FR2019/051133 WO2019224461A1 (fr) | 2018-05-23 | 2019-05-17 | Dispositif d'optimisation des circulations des courants et de la compatibilite electromagnetique pour vehicule et vehicule comprenant un tel dispositif |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3797478A1 true EP3797478A1 (fr) | 2021-03-31 |
Family
ID=62684977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19790045.9A Withdrawn EP3797478A1 (fr) | 2018-05-23 | 2019-05-17 | Dispositif d'optimisation des circulations des courants et de la compatibilite electromagnetique pour vehicule et vehicule comprenant un tel dispositif |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3797478A1 (fr) |
| CN (1) | CN112154613A (fr) |
| BR (1) | BR112020023171A2 (fr) |
| FR (1) | FR3081404B1 (fr) |
| WO (1) | WO2019224461A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7065152B2 (en) * | 2001-12-27 | 2006-06-20 | Caterpillar Inc. | Controller area network using transformers |
| DE10235162A1 (de) * | 2002-08-01 | 2004-02-19 | Robert Bosch Gmbh | Steuergerät in einem Fahrzeug |
| CA2442272A1 (fr) * | 2002-09-24 | 2004-03-24 | Envitech Automation Inc. | Circuit de communication pour vehicule |
| CN102006287B (zh) * | 2010-11-08 | 2013-02-27 | 北京交通大学 | 一种采用电气隔离保护措施的FlexRay网络节点 |
| DE102011087828A1 (de) * | 2011-12-06 | 2013-06-06 | Continental Automotive Gmbh | Netzwerk-Komponente für ein Fahrzeug-Netzwerk und entsprechendes Fahrzeug-Netzwerk |
-
2018
- 2018-05-23 FR FR1854329A patent/FR3081404B1/fr not_active Expired - Fee Related
-
2019
- 2019-05-17 CN CN201980033845.1A patent/CN112154613A/zh active Pending
- 2019-05-17 BR BR112020023171-1A patent/BR112020023171A2/pt not_active IP Right Cessation
- 2019-05-17 WO PCT/FR2019/051133 patent/WO2019224461A1/fr not_active Ceased
- 2019-05-17 EP EP19790045.9A patent/EP3797478A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN112154613A (zh) | 2020-12-29 |
| BR112020023171A2 (pt) | 2021-02-09 |
| FR3081404A1 (fr) | 2019-11-29 |
| FR3081404B1 (fr) | 2021-01-15 |
| WO2019224461A1 (fr) | 2019-11-28 |
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