WO2019193292A1 - Data transmission device - Google Patents
Data transmission device Download PDFInfo
- Publication number
- WO2019193292A1 WO2019193292A1 PCT/FR2019/050793 FR2019050793W WO2019193292A1 WO 2019193292 A1 WO2019193292 A1 WO 2019193292A1 FR 2019050793 W FR2019050793 W FR 2019050793W WO 2019193292 A1 WO2019193292 A1 WO 2019193292A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- additional
- communication link
- radio frequency
- transmission system
- power line
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 54
- 238000004891 communication Methods 0.000 claims abstract description 58
- 230000008878 coupling Effects 0.000 claims abstract description 30
- 238000010168 coupling process Methods 0.000 claims abstract description 30
- 238000005859 coupling reaction Methods 0.000 claims abstract description 30
- 230000006978 adaptation Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5483—Systems for power line communications using coupling circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
Definitions
- the present invention is in the field of aircraft data transmission systems.
- the aircraft include a power distribution network and a data transmission network independent of the power distribution network.
- FIG. 1 represents an example of a power transmission system 2 and a data transmission system 4 generally mounted in an aircraft.
- the power transmission system 2 is independent of the data transmission system 4.
- the power transmission system 2 comprises two cables 6,8 connected on the one hand to a voltage supply source 10 of the aircraft and, on the other hand, to a power conversion unit 12 or to a power supply unit 12. set 12 of electrical equipment.
- the data transmission system 4 comprises a first transceiver unit 14, a second transceiver unit 16 able to transmit and receive data to and from the first transceiver unit 14. are transmitted via radiofrequency waves.
- the transceiver units 14, 16 are identical. They each comprise a data processing unit 18 able to generate data to be transmitted, a radio-frequency transceiver 20 connected to the processing unit 18, an adaptation network 22 connected to the processing unit and a data transmission unit 18. transmitting and receiving antenna 24 connected to the adaptation network.
- the present invention aims to propose an alternative transmission system.
- the present invention proposes a data transmission system comprising a transmission device, a reception device and a communication link,
- the transmitting device comprising:
- radiofrequency transmitter having at least one output connected to the communication link, the radiofrequency transmitter being able to generate a radiofrequency signal representative of data to be transmitted,
- a power line connected to the communication link at a connection point; the power line being intended to be brought to a supply voltage
- At least one capacitive coupling component connected between the output of the radiofrequency transmitter and the connection point, said capacitive coupling component being able to transmit the radio frequency signal and to block the supply voltage
- the receiving device comprising:
- a radio frequency receiver having at least one input connected to the communication link for receiving said radio frequency signal
- the transmission system comprises one or more of the following characteristics:
- the radiofrequency transmitter comprises an additional output and the radio frequency receiver comprises an additional input
- the transmission system comprising an additional communication link connected between the additional output of the radiofrequency transmitter and the additional input of the radio frequency receiver
- the transmitting device comprising: an additional power line connected to the additional communication link at an additional connection point; and
- the reception device comprising:
- the transmitting device and / or the receiving device comprises a transformer connected, on the one hand, to the radiofrequency transmitter and / or the radio frequency receiver and, on the other hand, to the communication link and to the communication link additional.
- the transmitting device and / or the receiving device further comprises a filter adapted to block the radio frequency signal and to transmit the supply voltage, said filter being connected to the power line.
- said filter is a transformer.
- the communication link is a strand of a controlled impedance cable.
- the transmission device comprises an impedance matching network connected between the radiofrequency transmitter and the capacitive coupling component, said adaptation network being adapted to adapt the impedances of the communication link.
- the reception device comprises an impedance matching network connected between the capacitive coupling component and the radio frequency receiver, said adaptation network being able to adapt the impedances of the communication link.
- the system further comprises a voltage supply source connected to the power line of the transmitting device or the receiving device.
- the system further comprises a set of electrical equipment connected to the power line of the transmitting device or the receiving device.
- FIG. 1 is a schematic view of an exemplary data transmission system and power transmission system belonging to the state of the art.
- FIG. 2 is a schematic view of a data transmission system according to a first embodiment of the invention
- FIG. 3 is a schematic view of a data transmission system according to a second embodiment of the invention.
- the data transmission system 26 comprises a device 28 for transmitting data capable of transmitting data, a device 30 for receiving data able to receive the data. transmitted by the transmission device 28, a communication link 32 and an additional communication link 34.
- the communication links 32, 34 connect the transmitting device 28 to the receiving device 30.
- the communication links 32, 34 are isolated from each other. They are for example constituted by a first strand and a second strand of a controlled impedance cable.
- a controlled impedance cable For example, an RS 485 type cable or an ethernet cable may be used.
- the transmitting device 28 comprises a processing unit 36 and a radio frequency transmitter 38 connected to the processing unit 36 via a communication link 42.
- the processing unit 36 is constituted by a protocol controller.
- It comprises an output 40 capable of generating a signal representative of data to be transmitted to the reception device 30.
- the transmitter 38 is able to receive the signal generated by the processing unit, to modulate and amplify it. Finally, the transmitter 38 is able to transmit a radio frequency signal containing the data in a differential mode to the communication link 32 and to the communication link. 34.
- the transmitter 38 has an output 41 connected to the communication link 32 and an additional output 43 connected to the additional communication link 34.
- the radiofrequency transmitter 38 is for example an RFID transmitter.
- the communication link 42 is for example of the bus type l 2 C (of the English “Inter-lntegrated Circuit"), link SPI (of the English “Serial Peripheral Interface”), link RS (English “Recommended Standard ”) such as an RS 232 link.
- the transmission device 28 may comprise an impedance matching network 44 connected to the radiofrequency transmitter 38 and / or an electrical transformer 46 connected to the impedance matching network 44.
- the impedance matching network 44 comprises at least one variable impedance and makes it possible to optimize the data transfer.
- the electrical transformer 46 is able to galvanically isolate the transmitter 38 from the communication links 32, 34.
- the electrical transformer 46 has a first coil connected to the impedance matching network 44 and a second coil connected to capacitive coupling components 60, 62, as explained hereinafter.
- the first winding acts as an antenna capable of transmitting the radiofrequency signal.
- the second winding acts as an antenna adapted to receive the radiofrequency signal emitted by the first winding.
- the first coil is connected directly to the output 41 and the additional output 43 of the transmitter and the second coil connected to the communication link 32 and the additional communication link 34.
- the transmitting device 28 further comprises a power line 48 connected to the communication link 32 at a connection point 50, and an additional power line 52 connected to the additional communication link 34 at an additional connection point 54.
- the transmission device 28 may also include a source 56 for supplying voltage to the aircraft such as the aircraft generator or a battery.
- the power lines 48, 52 are connected to this power source 56.
- the power line 48 is for example connected to a power supply. potential of 28 volts.
- the additional power line 52 is connected to the current return of the voltage supply source.
- the transmission device 28 may also comprise a filter 58 connected to the power line 48 upstream of the connection point 50 and to the additional power line 52 downstream of the connection point 54, considering the direction of the current
- the filter 58 is connected between the power source 56 and the connection points 50, 54.
- the filter 58 makes it possible to block the transmission of the radiofrequency signal towards the power source 56 while allowing the supply voltage to pass.
- This filter 58 is for example constituted by a transformer.
- the transmission device 28 furthermore comprises a capacitive coupling component 60 connected between the output of the transmitter and the connection point 50, and an additional coupling capacitive component 62 connected between the additional output 41 of the transmitter and the additional connection point 54.
- the capacitive coupling component 60 and the additional coupling capacitive component 62 are suitable for transmitting the radio frequency signal and blocking the supply voltage. Thus, the supply voltage applied by the power source 56 is not transmitted to the radiofrequency transmitter 38.
- Capacitive coupling components 60, 62 are, for example, constituted by capacitors.
- the capacitive coupling components 60, 62 block the supply voltage so that it is not transmitted to the radiofrequency transmitter 38.
- the receiving device 30 comprises a processing unit 64 and a radio frequency receiver 66 connected to the processing unit.
- the processing unit 64 is identical or similar to the processing unit 36 of the transmitting device. It comprises an input 70 connected to an output 72 of the receiver 66 by a communication link 37 of the bus type 1 2 C, SPI link, RS link.
- the radio frequency receiver 66 comprises the output 72, an input 74 connected to the communication link 32 and an additional input 76 connected to the additional communication link 34
- the receiving device 30 may also include an impedance matching network 68 connected to the radio frequency receiver 66 and / or an electrical transformer 78 connected to the impedance matching network 68.
- the impedance matching network 68 and the transformer 78 are identical or similar to the matching network 68 and the transformer 46 of the transmission device 28.
- the electrical transformer 78 has a first coil connected to the output 74 and at the additional output 76 of the receiver and a second winding connected to the communication link 32 and the additional communication link 34.
- the receiving device 30 includes a power line 80 connected to the communication link 32 at a connection point 82 and an additional power line 84 connected to the additional communication link 34 at an additional connection point 86.
- the receiving device 30 may also include a set of equipment 88 connected to the power line 32 and to the additional power line 34.
- the equipment set 88 comprises one or more electrical equipment.
- the receiving device 30 comprises a filter 90 connected to the power line 80 downstream of the connection point 82 and to the additional power line 84 upstream of the additional connection point 86, considering the direction of the current coming from the power source 56 and supplying the set of equipment 88.
- the filter 90 is connected between the set of equipment 88 and the connection points 82 and 86. This filter 90 is able to block the signal radiofrequency and to let the supply voltage pass.
- the filter 90 is for example constituted by a transformer.
- the receiving device 30 further comprises a capacitive coupling component 92 connected between the connection point 82 and the input 74 of the radio frequency receiver 66, and a capacitive coupling component additional 94 connected between the connection point 86 and the input 76 of the radio frequency receiver 66.
- the capacitive coupling components 92, 94 are able to block the supply voltage from the voltage source 56 and to pass the radio frequency signal.
- Capacitive coupling components 92, 94 include one or more capabilities.
- the equipment assembly 88 connected to the transmission device 28 and the voltage source 56 is connected to the receiving device 30.
- the receiving device 30 that supplies power to the device 30. transmission 28, the data being transmitted from the transmitting device 28 to the receiving device 30.
- the transmitting device 28 and / or the receiving device 30 does not include an electrical transformer 46, 78.
- the power line 48, 80 and the additional power line 52, 84 of the transmission device 28 and / or the reception device 30 do not include a filter 58, 90.
- the transmission system 26 comprises a single communication link 32 and the transmitter 38 has a single output 41 own transmit the radio frequency signal representative of the data to be transmitted on the single communication link in a non-differential mode.
- the radiofrequency transmitter 38 modulates the data from the processing unit 36 into a radio frequency signal and transmits the signal thus obtained to the communication links 32, 34.
- the data is thus transmitted from the transmission device 28 to the reception device 30.
- the received data are demodulated by the radio frequency receiver 66 and then transmitted to the processing unit 64.
- the supply voltage from the source power supply 56 is power lines 48, 52 to the communication links 32, 34. This supply voltage is transmitted to the power lines 80, 84. This supply voltage supplies the set of electrical equipment 88 .
- the data transmission system 96 according to the second embodiment of the invention shown in FIG. 3 is identical to the data transmission system according to the first embodiment with the exception of it comprises a first transmission-reception device 98 in place of the transmission device 28 and a second transmission-reception device 100 in place of the reception device 30.
- the radiofrequency transmitter 38 is a radio frequency transceiver 102 and the radio frequency receiver 66 is a radio frequency transceiver 104.
- the other components of the transmission system 96 according to the second embodiment are identical or similar to the components of the transmission system 26 according to the first embodiment and will not be described a second time.
- the operation of the transmission system according to the second embodiment is similar to the operation of the transmission system according to the first embodiment.
- Data is transmitted from the first transceiver 98 to the second transceiver 100 and data is transmitted from the second transceiver 100 to the second transceiver 98.
- the voltage source 56 feeds the set of equipment 88.
- the supply voltage is transmitted by the power lines 48,58 of the first device 98, the communication links 32, 34 and the power lines 80, 84 of the second device 100.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112020020402-1A BR112020020402A2 (en) | 2018-04-04 | 2019-04-04 | DATA TRANSMISSION SYSTEM |
US17/045,092 US11251825B2 (en) | 2018-04-04 | 2019-04-04 | Data transmission device |
EP19722164.1A EP3776882B1 (en) | 2018-04-04 | 2019-04-04 | Data transmission system |
CN201980031044.1A CN112204893B (en) | 2018-04-04 | 2019-04-04 | Data transmission system |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862652531P | 2018-04-04 | 2018-04-04 | |
US62/652531 | 2018-04-04 | ||
FR1856512 | 2018-07-13 | ||
FR1856512A FR3083939A1 (en) | 2018-07-13 | 2018-07-13 | DATA TRANSMISSION SYSTEM |
FR1859892 | 2018-10-25 | ||
FR1859892A FR3083937B1 (en) | 2018-07-13 | 2018-10-25 | DATA TRANSMISSION SYSTEM |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019193292A1 true WO2019193292A1 (en) | 2019-10-10 |
Family
ID=66429413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2019/050793 WO2019193292A1 (en) | 2018-04-04 | 2019-04-04 | Data transmission device |
Country Status (1)
Country | Link |
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WO (1) | WO2019193292A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6192069B1 (en) * | 1997-11-03 | 2001-02-20 | Advanced Micro Devices, Inc. | Circuit and methodology for transferring signals between semiconductor devices |
US20040258141A1 (en) * | 2003-06-11 | 2004-12-23 | The Boeing Company | Digital communication over 28VDC power line |
FR2937199A1 (en) * | 2008-10-13 | 2010-04-16 | Sagem Defense Securite | AVIONIC SYSTEM COMPRISING A CONTROL CONNECTED TO A DEVICE BY A MUTUALIZED LINE FOR POWER AND DATA. |
-
2019
- 2019-04-04 WO PCT/FR2019/050793 patent/WO2019193292A1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6192069B1 (en) * | 1997-11-03 | 2001-02-20 | Advanced Micro Devices, Inc. | Circuit and methodology for transferring signals between semiconductor devices |
US20040258141A1 (en) * | 2003-06-11 | 2004-12-23 | The Boeing Company | Digital communication over 28VDC power line |
FR2937199A1 (en) * | 2008-10-13 | 2010-04-16 | Sagem Defense Securite | AVIONIC SYSTEM COMPRISING A CONTROL CONNECTED TO A DEVICE BY A MUTUALIZED LINE FOR POWER AND DATA. |
Non-Patent Citations (2)
Title |
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GRASSI F ET AL: "Effects of imbalance on conducted immunity of a PLC link onto a DC power-bus for spacecraft", 2015 ASIA-PACIFIC SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY (APEMC), IEEE, 26 May 2015 (2015-05-26), pages 665 - 668, XP033189121, ISBN: 978-1-4799-6668-4, [retrieved on 20150803], DOI: 10.1109/APEMC.2015.7175334 * |
LARHZAOUI THOMAS ET AL: "OFDM PLC transmission for aircraft flight control system", 18TH IEEE INTERNATIONAL SYMPOSIUM ON POWER LINE COMMUNICATIONS AND ITS APPLICATIONS, IEEE, 30 March 2014 (2014-03-30), pages 220 - 225, XP032594272, DOI: 10.1109/ISPLC.2014.6812333 * |
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