Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
  • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
  • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
  • B60Q1/30—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces
  • B60Q1/305—Indicating devices for towed vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
  • B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
  • B60Q11/005—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00 for lighting devices, e.g. indicating if lamps are burning or not
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
  • H05B45/10—Controlling the intensity of the light
  • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
  • H05B47/20—Responsive to malfunctions or to light source life; for protection

Definitions

• the present invention generally relates to a diagnostic device mounted on a motor vehicle and more specifically a diagnostic device and fire control mounted on a trailer, arranged on a motor vehicle.
• motor vehicles may be provided to allow attachment of a trailer-type annex, such as a caravan or a storage tank or the like, at the rear. Since these trailers generally hide the rear of the vehicle, and therefore the lights, or lighting / signaling devices, rear of the vehicle, they are generally themselves equipped with lighting / signaling devices substantially identical to those of the vehicle, ie they include a sidelight, rear fog lamp, brake light, flashing light or a reversing light.
• a trailer-type annex such as a caravan or a storage tank or the like
• LED lights On road vehicles and trailers, lighting / signaling devices mainly use filament lamps, but more and more new fire technologies are emerging, such as LED lights, which are spreading rapidly. These new LED lighting technologies, in particular, cause difficulties in operation and diagnosis because of their electrical characteristics different from those of filament lamps (generally lower consumption) and because of the lack of standardization of the electrical characteristics of the lamps. these lights unlike filament lamps. Indeed, there are different technologies of LED lights:
• control and diagnostic device is defined by the manufacturer of the towing vehicle without knowledge of the characteristics of the lights of the trailers to be mounted on the towing vehicle, the latter not being designed under his responsibility.
• EP 1839928 discloses a system which detects a failure on LED lighting on a trailer and compensates for the failed LEDs by a voltage increase. Also, DE 102005055574 discloses a failure control system on vehicle lighting. None of these documents, however, can diagnose the type of bulb mounted on a trailer and control the lights accordingly from the vehicle.
• An object of the present invention is therefore to meet the disadvantages of the document of the prior art mentioned above and in particular, first of all, to provide a device for diagnosing and controlling lights of a trailer mounted on a automotive device capable of detecting a type of fire mounted on the trailer.
• a first aspect of the invention relates to a detachable light source diagnostic device mounted on a motor vehicle comprising a control unit arranged to be connected to at least one light source, an interface element with said at least one source.
• luminous device characterized in that the interface element comprises means for detecting an output voltage of the light source arranged to detect a first output voltage value of the light source and transmit said first voltage value to said control unit, and in that said control unit is arranged to determine a type of light source according to said first voltage value.
• the vehicle can adapt the control of the lights of a trailer for example depending on the type of fire detected.
• control unit is arranged to adapt a supply of said at least one light source according to the detected light source so as to generate a first power mode for supplying a first type of light source and a second power mode for feeding a second type of light source. In this way, the lights are correctly driven / powered.
• the first power mode is a PWM mode for a filament light source.
• the life of the filament bulbs is increased.
• the second power mode is an application of a voltage dependent on the edge voltage of the vehicle for a LED light source. In this way, the LED lights are not disturbed.
• the interface element further comprises means for biasing the light source from a first power source arranged to polarize the light source for a minimum period during which the control unit acquires said light source. first voltage value.
• the interface element further comprises a switching means of the light source arranged to supply the light source from a second power source. In this way, the light source is reliably controlled.
• the biasing means is arranged to be actuated before powering on or after stopping the powering up of the light source so that the detection means detects a second output voltage value of the light source and transmits said second voltage value to said control unit arranged to determine a failure of the light source as a function of said second voltage value.
• the failures of the LED lights are reliably detected.
• the light sources are mounted on a trailer arranged to be attached to said vehicle. Thus, several trailers with different technology lights can be attached to the vehicle with reliability of driving lights.
• a second aspect of the invention is a vehicle comprising a diagnostic device according to the first aspect of the invention.
• FIG. 1 shows a schematic diagram of the device of the present invention.
• FIG. 2 represents a detailed diagram of a preferred embodiment of the device of the present invention.
• FIG. 1 represents a diagnostic device 1 of detachable light sources 4 mounted for example on a trailer arranged so as to be attached to a motor vehicle.
• the device 1 comprises a control unit 3 arranged to be connected to at least one light source 4 and an interface element 2 with said at least one light source 4 situated between the control unit 3 and the light source 4.
• the device 1 allows a detection of the type of fire, that is to say, light source 4, and self-adaptation of the fire control.
• the interface element 2 preferably comprises several components 21, 22, 23, 24 including a means 21 for detecting an output voltage of the light source 4. the output voltage of the light source 4, the voltage at the terminals of the light source 4 when it is powered by a biasing means 23 described below.
• the detection means 21 is arranged to detect a first output voltage value of the light source 4, when it is supplied for example by the polarization means 23, and transmit the first voltage value to the control unit. 3 via a signal.
• the control unit 3 acquires the signal of the first voltage value and compares it with a pre-established threshold value dependent on the type of light source and the equipment installed in the device 1, to determine the type of light source 4 according to the first voltage value. Note that it is also possible to define, in the control unit 3, a second voltage threshold beyond which a connection fault can be detected.
• the control unit 3 is arranged to adapt a supply of said at least one light source 4 determined according to the detected light source so as to generate a first power supply mode, for example a regulation of a PWM voltage, for supplying a light source 4 of filament light bulb type and / or a second power supply mode, for example an application of a voltage depending on the voltage of the edge of the vehicle, to power a light source 4 LED type.
• a first power supply mode for example a regulation of a PWM voltage
• a light source 4 of filament light bulb type for supplying a light source 4 of filament light bulb type and / or a second power supply mode, for example an application of a voltage depending on the voltage of the edge of the vehicle, to power a light source 4 LED type.
• the interface element 2 furthermore comprises the polarization means 23, mentioned above, of the light source 4.
• the polarization is preferably carried out from a first power source U a iimi and polarizes the light source 4 for a minimum period during which the control unit 3 acquires the first voltage value of the light source 4.
• the interface element 2 further comprises a means of switching 24 of the light source 4 arranged to feed the light source 4 from a second power source U to Nm2 by order of the control unit 3.
• the device 1 also comprises a diagnostic means 22 of the switching means 24 which measures the current switched to provide a diagnostic signal to the control unit 3.
• the biasing means 23 is arranged to be actuated before being put into operation. voltage or after a stop of the powering up of the light source so that the detection means 21 detects a second output voltage value of the light source 4 and transmits said second voltage value to said control unit 3 arranged to determine a failure of the light source as a function of said second voltage value.
• the polarization is not necessarily only before switching or after switching off, but can overlap the switching transition of the light source 4.
• the fire determination phase can be done when the vehicle wakes up, when the ignition is switched on or when the detachable light sources or the trailer are connected.
• FIG. 2 represents a particularly preferred embodiment in which the switching means is of the Smartpower 22 type, the polarization module 23 comprises a transistor T1 and a resistor R1, the detection module comprises a divider bridge R2, R3, the module diagnostic circuit comprises two resistors R4 and R5, and the polarization module 23 and the switching module 23 are fed by the same power source Vbat.
• the polarization module 23 comprises a transistor T1 and a resistor R1
• the detection module comprises a divider bridge R2, R3
• the module diagnostic circuit comprises two resistors R4 and R5
• the polarization module 23 and the switching module 23 are fed by the same power source Vbat.
• the switching means 24 may be made in several ways, for example a Smartpower, a MOSFET or bipolar transistor, an electromechanical relay or the like, the biasing means 23 is for example a bipolar transistor or a MOSFET transistor and the unit of command 3 can be performed with a microcontroller including software or logic or analog electronics.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=53366053

Family Applications (1)

Country Status (4)

Families Citing this family (3)

Family Cites Families (6)

• 2015
  • 2015-03-16 FR FR1552127A patent/FR3033747B1/fr active Active
• 2016
  • 2016-03-02 CN CN201680015934.XA patent/CN107466274B/zh not_active Expired - Fee Related
  • 2016-03-02 EP EP16713536.7A patent/EP3272192A1/de not_active Ceased
  • 2016-03-02 WO PCT/FR2016/050471 patent/WO2016146915A1/fr not_active Ceased

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