EP3513472A1 - Unité électronique de commande, dispositif électronique et système associés - Google Patents
Unité électronique de commande, dispositif électronique et système associésInfo
- Publication number
- EP3513472A1 EP3513472A1 EP17771728.7A EP17771728A EP3513472A1 EP 3513472 A1 EP3513472 A1 EP 3513472A1 EP 17771728 A EP17771728 A EP 17771728A EP 3513472 A1 EP3513472 A1 EP 3513472A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- contact
- control unit
- electronic control
- electronic device
- 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- Withdrawn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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/02—Arrangements for reducing harmonics or ripples
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/548—Systems for transmission via power distribution lines the power on the line being DC
Definitions
- the present invention relates to the power supply of remote electronic devices, for example within a vehicle.
- It relates more particularly to an electronic control unit, and an associated electronic device and system.
- the invention is particularly advantageous in the case where the electronic device consumes a relatively high electrical power, for example when the electronic device comprises an illumination means.
- a data transmission cable is used to exchange data between the remote electronic device and the control equipment.
- a power cable is also used to transmit a high intensity current from the control equipment (or other power source) to the remote electronic device, the transmission cable of data are generally not suitable for the transmission of such a current.
- the present invention proposes an electronic control unit comprising a connector comprising at least one contact, a voltage booster circuit powered by an input voltage and designed to deliver at said contact an output voltage greater than said voltage. input, and a conversion circuit connected to said contact for processing electrical signals present on said contact and representative of data processed by the electronic control unit.
- Such an electronic control unit thus delivers a voltage high at the contact of the connector, which allows to transmit a significant electrical power in a cable connected to this connector, even with a limited current in this cable.
- the voltage booster circuit and the conversion circuit are each connected to said contact via a filter
- a power supply terminal for connection to a battery carries said input voltage
- the output voltage is greater than 20 V
- the electronic control unit comprises a processing unit designed to process said data
- the conversion circuit is a serial-parallel converter connected to the processing unit;
- the electronic control unit comprises a supply circuit powered by said input voltage and producing a supply voltage of the processing unit.
- the invention also proposes an electronic device comprising a connector comprising at least one contact, a voltage-reducing circuit arranged to receive at the input a voltage present at said contact and designed to produce at least a voltage lower than the voltage present at said level. contact, and a conversion circuit connected to said contact for processing electrical signals present on said contact and representative of data processed by the electronic device.
- the step-down circuit and the conversion circuit may each be connected to said contact via a filter.
- the voltage present at said contact is for example greater than 20 V.
- the electronic device comprises an illumination means powered by the voltage-reducing circuit, as is the case for example when the electronic device is a camera based on the flight time or a screen.
- the invention also proposes a system comprising such an electronic control unit, such an electronic device and a cable connecting the connector of the electronic control unit and the connector of the device. electronic.
- the invention proposes a system comprising an electronic control unit with a first connector comprising at least a first contact, an electronic device with a second connector comprising at least a second contact, and a cable connecting the first connector and the second connector.
- the electronic control unit comprises a voltage booster circuit powered by an input voltage and adapted to deliver at said first contact an output voltage greater than said input voltage, and a first conversion circuit.
- the electronic device comprises a voltage-reducing circuit arranged to receive as input a voltage present at said level; second contact and designed to produce at least one tens ion less than the voltage present at said second contact, and a second conversion circuit connected to said second contact for processing electrical signals present on said second contact and representative of data processed by the electronic device.
- the cable makes it possible, on the one hand, to exchange data between the electronic control unit and the electronic device, and on the other hand to supply the electronic device with electricity by the electronic control unit. with a high power without requiring a high current due to the use of a high voltage by the voltage booster circuit.
- Figure 1 shows schematically some elements of an electronic system embedded in a vehicle according to the invention.
- Such a system comprises an electronic control unit 1 and an electronic device (here a camera 2) connected by a cable 3 (here a coaxial cable). These elements are powered by the battery 4 of the vehicle (here a motor vehicle), as explained below.
- the cable 3 comprises, in addition to the wire represented in FIG. 1 (which corresponds to the core of the coaxial cable), a ground wire (not shown, corresponding to the braid of the coaxial cable) for establishing a ground common to the electronic control unit 1 and the electronic device 2.
- the electronic control unit 1 comprises a supply terminal 1 1, a voltage booster circuit 12, a supply circuit 14, a processing unit 15, a conversion circuit 1 6, a filter 18 and a connector having a contact 19 for connection to the cable 3.
- the power supply terminal 1 1 is connected to the battery 4 and is thus brought to a potential equal to the nominal voltage Vbatt of the battery 4 (the ground potential or reference potential equal to 0 V).
- the nominal voltage Vbatt is typically between 10 V and 15 V, and is for example 13 V.
- the voltage booster circuit 12 is designed to generate at its output O a voltage greater than the voltage received on its input I (typically greater than twice the voltage received on its input I).
- the voltage booster circuit 12 is here a DC-DC converter, for example of Boost converter type.
- the voltage Vh on the output O of the voltage booster circuit 12 is therefore greater than the nominal voltage Vbatt of the battery 4 (typically greater than twice the nominal voltage Vbatt of the battery 4).
- the voltage Vh is (approximately) 39 V, which is three times the nominal voltage Vbatt of the battery 4.
- the voltage Vh produced by the voltage booster circuit 12 is, for example, at least 20 V.
- the power supply circuit 14 is designed to generate, from the nominal voltage Vbatt of the battery 4, a supply voltage Vcc of certain electronic circuits of the electronic control unit 1 (in particular for power supply of the control unit 1). processing unit 15 and possibly further conversion circuit 16).
- the supply circuit 14 is here a voltage-reducing circuit (the supply voltage Vcc typically being between 1 V and 5 V).
- the processing unit 15 is here a microcontroller comprising a processor (for example a video processor) and at least one memory for processing the data manipulated by the electronic control unit 1, in particular the data (here representing images or image sequences) received from the electronic device 2 as described below.
- a processor for example a video processor
- memory for processing the data manipulated by the electronic control unit 1, in particular the data (here representing images or image sequences) received from the electronic device 2 as described below.
- processing unit 15 could be embodied as a specific application integrated circuit (or ASIC for "Application Specifies Integrated Circuit”).
- the conversion circuit 16 is here a series-parallel converter (or “deserialize according to the imperial name) designed to convert into parallel signals (delivered on a bus B connected to the processing unit 15) the received serial signals in from the contact 19 of the connector (here via the filter 18).
- serial signals are those present on a serial link S established (via the cable 3) between the conversion circuit 1 6 of the electronic control unit 1 and a conversion circuit 26 of the electronic device 2 described below.
- Such serial signals are formed by a bit stream, generally with a high bit rate (typically greater than 100 Mbps).
- the conversion circuit 1 6 could be a demodulator adapted to convert a modulated signal at a high frequency, present on the contact 19 of the connector, into a data stream for the processing unit 15.
- serial link S can in practice be bidirectional; in this case, the conversion circuit 1 6 is also designed to send, at the contact 19 of the connector, a bit stream representing data (or commands) received from the processing unit 15 via the bus B.
- the filter 18 comprises a low-frequency terminal L, a high-frequency terminal H and a common terminal C.
- the filter 18 (typically an analog filter) is designed so that the low-frequency terminal L carries a low-frequency component of the signal present on the common terminal C and for the high-frequency terminal H to carry a high-frequency component of the signal present on the common terminal C.
- the low-frequency terminal L is connected to the output O of the voltage booster circuit 12
- the high-frequency terminal H is connected to the conversion circuit 1 6 (precisely here at the serial input of the conversion circuit 1 6) and the common terminal C is connected to the contact 19 of the connector.
- the voltage at the contact 19 (and therefore that present in the cable 3) is composed of the voltage Vh generated by the voltage booster circuit 12 (voltage Vh which is here 39 V) and S series signals representing the data exchanged between the electronic control unit 1 and the electronic device 2.
- the electronic device 2 (as already indicated here, a camera) comprises a connector having a contact 21, a filter 28, a voltage-reducing circuit 22, an illumination means 23, an image sensor 24, a signal unit control 25 and a conversion circuit 26.
- the electronic device 2 is a three-dimensional camera operating on the principle of flight time (or TOF camera for "Time Of Flighf"): the illumination means 23 (for example light-emitting diodes) emits radiation (eg infrared) in the direction of the scene observed at a predefined time (or according to a predefined modulation) and it is thus possible to determine, by measurement at the image sensor 24, the travel time (or flight time) of the radiation from the camera 2 to the first object encountered and, after reflection on this object, from the object to the camera, this time being representative of the distance separating the object from the camera 2. It is understood that such a means illumination 23 consumes a large current, typically a current of intensity greater than 2 A.
- the illumination means 23 for example light-emitting diodes
- the illumination means 23 emits radiation (eg infrared) in the direction of the scene observed at a predefined time (or according to a predefined modulation) and it is thus possible to determine, by measurement at the image sensor 24, the travel time (or flight
- the image sensor 24 comprises a matrix of pixels and is generally associated with an optical element (not shown) so that each pixel of the matrix corresponds to an observation direction of the environment situated in front of the camera 2.
- the illumination means 23 and the image sensor 24 are controlled (synchronously) by the control unit 25, in order to estimate, for each pixel, the flight time associated with the pixel concerned (and to deduce the distance of the first object encountered in the observation direction associated with this pixel).
- the conversion circuit 26 is connected by a bus B 'to the image sensor 24.
- the conversion circuit 26 is here a parallel-serial converter designed to convert into a bit stream (S-series signal), generally of high frequency (for example greater than 100 Mbps), the parallel signals received as input, here the signals representative of the images (or image sequences) acquired produced by the image sensor 24.
- S-series signal generally of high frequency (for example greater than 100 Mbps)
- the parallel signals received as input here the signals representative of the images (or image sequences) acquired produced by the image sensor 24.
- serial link S may be bidirectional and the conversion circuit 26 may also receive (from the contact 21 of the connector, here via the filter 28) data or commands intended for the image sensor 24 (or possibly to the control circuit 25).
- the conversion circuit 26 could be a modulator designed to convert data received from the image sensor 24 into a signal modulated at a high frequency, delivered on the contact 21 of the connector.
- the filter 28 comprises a low-frequency terminal L ', a high-frequency terminal H' and a common terminal C.
- the filter 28 (typically an analog filter) is designed so that the low-frequency terminal L 'carries a low-frequency component. the frequency of the signal present on the common terminal C and for the high-frequency terminal H 'to carry a high-frequency component of the signal present on the common terminal C.
- the common terminal C is connected to the contact 21 of the connector, the low-frequency terminal L 'is connected to the voltage-reducing circuit 22 and the high-frequency terminal H' is connected to the conversion circuit 26 (precisely here at the serial output of the conversion circuit 26).
- the filter 28 can deliver the voltage Vh (which is a DC voltage) to the voltage-reducing circuit 22 while allowing the passage of the serial signals S of the conversion circuit 26 to the contact 21.
- the voltage-reducing circuit 22 is designed to convert the DC voltage Vh received at the input (here of the contact 21 via the filter 28) into at least one DC voltage V1, V2, V3 less than this input voltage Vh.
- the voltage received at the input (or input voltage) Vh is preferably at least 20 V to allow the transport in the cable 3 of a high electrical power with a limited current.
- the voltage-reducing circuit 22 is, for example, in practice a DC-DC converter, here of the Buck converter type.
- the voltage-reducing circuit 22 produces three DC voltages V1, V2, V3 in the example described:
- each DC voltage V1, V2, V3 produced by the voltage-reducing circuit 22 has a value of less than 12 V.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
- Control By Computers (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1658705A FR3056347B1 (fr) | 2016-09-16 | 2016-09-16 | Unite electronique de commande, dispositif electronique et systeme associes |
| PCT/EP2017/073513 WO2018050898A1 (fr) | 2016-09-16 | 2017-09-18 | Unité électronique de commande, dispositif électronique et système associés |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3513472A1 true EP3513472A1 (fr) | 2019-07-24 |
Family
ID=57960525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17771728.7A Withdrawn EP3513472A1 (fr) | 2016-09-16 | 2017-09-18 | Unité électronique de commande, dispositif électronique et système associés |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3513472A1 (fr) |
| FR (1) | FR3056347B1 (fr) |
| WO (1) | WO2018050898A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040038169A1 (en) * | 2002-08-22 | 2004-02-26 | Stan Mandelkern | Intra-oral camera coupled directly and independently to a computer |
| US8541903B2 (en) * | 2010-02-03 | 2013-09-24 | Panasonic Automotive Systems Company Of America, Division Of Panasonic Corporation Of North America | Power line communication system and method |
| WO2011116258A1 (fr) * | 2010-03-19 | 2011-09-22 | Videolarm, Inc. | Système de priorisation d'alimentation électrique par câble ethernet et procédé pour des caméras de surveillance |
| JP5159928B2 (ja) * | 2011-07-29 | 2013-03-13 | 株式会社シマノ | 自転車用通信アダプタ |
-
2016
- 2016-09-16 FR FR1658705A patent/FR3056347B1/fr active Active
-
2017
- 2017-09-18 WO PCT/EP2017/073513 patent/WO2018050898A1/fr not_active Ceased
- 2017-09-18 EP EP17771728.7A patent/EP3513472A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR3056347B1 (fr) | 2021-01-01 |
| WO2018050898A1 (fr) | 2018-03-22 |
| FR3056347A1 (fr) | 2018-03-23 |
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