Showing papers by "Valeo published in 2012"

inductive power transmission device

Abstract: The invention relates to a single device (500) combining the functions of an inductive power transmitter for recharging a mobile device and of near-field data communication (NFC) with said mobile device. Said device comprises at least the following elements: a) an inductive power transmission module (500) for transmitting power to a mobile device (600), including: a power transmission coil (110); a first device (120) for communicating between the power transmission module and the mobile device; and a device (130) for monitoring the charge of the mobile device; b) a second near-field communication device including: a data transmission coil (310); a second device (320) for communicating between the data transmission module and the mobile device; and a device (330) for controlling the exchanges of information with the mobile device; and c) a base (502) for receiving the mobile device.

Optical measuring device

Abstract: The invention relates to an optical measuring device (1) with a housing (3), in which at least one optical transmitter (20) for emitting at least one transmission beam (22, 24) and at least one optical receiver are arranged, wherein a cover disk (5) closes off the housing and forms a transmission window (10) and a reception window (7), wherein the at least one transmission beam (22, 24) exits from the housing through the transmission window (10). In order to provide a measuring device (1) with as flat an outer surface (14) as possible and to achieve a reduction of interference signals, which can be ascribed to reflections of the transmission beam (22, 24) on the transmission window (10) among other factors, the exterior side (5.1) of a cover disc (5) is arranged essentially perpendicular to the emission direction and the transmission window (10) is designed with an inclination that has a predetermined angle of inclination (α).

Optical measuring device and a method for producing a cover disc for a housing of an optical measuring device

Abstract: The invention relates to an optical measuring device ( 1 ) having a housing ( 3 ), in which at least one optical emitter ( 20 ) for emitting at least one emission beam ( 22, 24 ) and at least one optical receiver are arranged, wherein a cover disc ( 5 ) terminates the housing and forms an emission window ( 10 ) and a reception window ( 7 ), wherein the at least one emission beam ( 22, 24 ) exits from the housing through the emission window ( 10 ), wherein the receiver receives the emission beam, which is reflected from the surroundings, as a reception beam through the reception window ( 7 ), and wherein the cover disc ( 5 ) has a heating assembly ( 20 ), and a corresponding method for producing a cover disc ( 5 ) for the optical measuring device ( 1 ). To provide an optical measuring device ( 1 ) having a heating assembly ( 20 ), which does not distort an emission beam as it exits from the housing ( 3 ) of the measuring device ( 1 ) via the cover disc ( 5 ), the heating assembly ( 20 ) is arranged essentially in the region of the reception window ( 7 ) and the region of the emission window ( 10 ) is left out.

Automotive standards-grade lane departure warning system

Abstract: The increasing trend towards the use of image sensors in transportation is driven both by legislation and consumer demands for higher safety and a better-driving experience. Awareness of the environment that surrounds a vehicle can make driving and manoeuvring of the vehicle much safer for all road users. The authors present an image processing method to detect lane departure in forward-facing video specifically designed to be in accordance with proposed automotive lane departure warning standards. Our system uses a novel lane-marking segmentation algorithm in accordance with national standards for lane markings. This method does not demand the high computational requirements of inverse perspective mapping unlike methods proposed in related research. The authors present a method for lane boundary modelling based on subtractive clustering and Kalman filtering in the Hough transform domain, which is within the constraints of automotive standards. Finally, using the cameras intrinsic and extrinsic parameters, the width of the vehicle and guidelines issued by the International Organisation for Standardisation, we show how lane departure can be identified. Results are presented that verify the systems high detection rate and robustness to various background interference, lighting conditions and road environments.

Method for detecting a parking space, parking assist system and motor vehicle comprising a parking assist system

Abstract: The invention relates to a method for detecting a parking space (20) by means of a parking assist system (2) of a motor vehicle (1) while the motor vehicle (1) passes the parking space (20). A first sensor (7) senses a chronological sequence (26) of measured values (27), and a second sensor (12) likewise senses a chronological sequence (31) of measured values (32) when passing by. The parking space (20) is detected on the basis of the measured values (27, 32) of at least one of the sensors (7, 12). For the detection of the parking space (20), the measured values (27) of the first sensor (7) and the measured values (32) of the second sensor (12) are sensed redundantly, and the chronological sequence (26) of the measured values (27) of the first sensor (7) is checked for plausibility on the basis of the measured values (32) of the second sensor (12). The invention further relates to a parking assist system (2) and to a motor vehicle (1) comprising such a system.

Method for opening a movable panel of a motor vehicle

Abstract: The invention relates to a method for opening a movable panel of a motor vehicle, including the following steps: Step A (1) - the presence of at least one body part of a person is detected by a capacitive or non-capacitive sensor; Step B (2) - the person is authenticated as being authorized to unlock the vehicle by an authentication means; Step C (5) - a virtual switch is produced by projecting a light pattern onto the ground on which the motor vehicle is standing; and Step D (6) - the person positions his/her foot so as to obscure the virtual switch in a predetermined manner; Step E (7) - if the foot is not positioned in the predetermined manner, a signal is sent to restart step D, or if the foot is positioned in the predetermined manner, a control means opens the movable panel.

Rangiersystem und Verfahren zum automatischen Rangieren eines Kraftfahrzeugs, Kraftfahrzeug, tragbares Kommunikationsgerät und Computerprogramm

Abstract: Die Erfindung betrifft ein Rangiersystem zum automatischen Rangieren eines Kraftfahrzeugs (1), mit einer fahrzeugseitigen Steuereinrichtung (2), die dazu ausgelegt ist, Steuersignale (S) an eine Antriebs- und/oder Lenkvorrichtung (5) des Kraftfahrzeugs (1) abzugeben und hierdurch einen automatischen Rangiervorgang des Kraftfahrzeugs (1) selbsttatig durchzufuhren, und mit einem tragbaren Kommunikationsgerat (10), welches dazu eingerichtet ist, eine Eingabe, die eine Bedienperson zum Freigeben des Rangiervorgangs an einer Bedieneinrichtung (11) des tragbaren Kommunikationsgerats (10) vornimmt, zu empfangen und aufgrund dieser Eingabe einen Befehl (12) an die Steuereinrichtung (2) drahtlos zu ubertragen, um das Durchfuhren des Rangiervorgangs zu veranlassen, wobei die Bedieneinrichtung (11) des tragbaren Kommunikationsgerats (10) zumindest ein Betatigungselement (14, 15) aufweist und das tragbare Kommunikationsgerat (10) dazu eingerichtet ist, das Rangieren des Kraftfahrzeugs (1) nur solange zu veranlassen, wahrend die Bedienperson das zumindest eine Betatigungselement (14, 15) betatigt halt, und nach Freigeben des Betatigungselements (14, 15) ein Anhalten des Kraftfahrzeugs (1) zu veranlassen.

Charge transfer device and associated management method

Abstract: The present invention relates to a method of managing a charge transfer between, on the one hand means of accumulation (9) of an electrical control device (1) of an electric motor of a motor vehicle (43) and, on the other hand, an external electrical circuit (41) outside said motor vehicle (43), said electrical control device (1) comprising: a voltage converter (21) connected to the accumulation means (9); an H-bridge voltage inverter (3) connected to the voltage converter (21) on the one hand and to the phases of the electric motor on the other hand, characterized in that the method comprises a step of controlling the voltage converter (21) and the voltage inverter (3) as a function of the charge transfer.

Pendulum-oscillator-type damping system comprising an improved guiding device

Abstract: The invention relates to a damping system (10) having an axis of rotation (X) and comprising: at least a first governor weight (14) and a second governor weight (14), both of which are capable of oscillating in relation to a supporting member (12); and at least one device (20) for guiding the first and second governor weights (14) in relation to the supporting member (12), said device comprising at least one rolling element (22) capable of co-operating with a pair of opposing tracks, namely a first guide track (24) and a second guide track (26) which is borne by the supporting member (12). The system is characterised in that the first guide track (24) is borne by linking means (16).

AiroDiag: A sophisticated tool that diagnoses and updates vehicles software over air

Abstract: This paper introduces a novel method for diagnosing embedded systems and updating embedded software installed on the electronics control units of vehicles through the Internet using client and server units. It also presents the communication protocols between the vehicle and the manufacturer for instant fault diagnosis and software update while ensuring security for both parties. AiroDiag ensures maximum vehicle efficiency for the driver and provides the manufacturer with up-to-date vehicle performance data, allowing enhanced future software deployment and minimum loss in case of vehicle recalls.

Actuator device for automatically activating the vehicle door of a motor vehicle

Abstract: The invention relates to an actuator device for automatically activating the vehicle door (2) of a motor vehicle (1), in particular the tailgate (2), which comprises an electromotive drive (9) and a radially extending arm (6) attached either to the vehicle door (2) or to a vehicle bodywork, and set in motion by the electromotive drive (14), said electromotive drive comprising an electrical motor (14) and a gearbox (20) driven by the motor (14), characterized in that, the gearbox (20) comprises a wobble mechanism (34, 46, 68, 72).

Device for air conditioning a drive train and a passenger compartment of a vehicle

Abstract: The invention relates to an air conditioning device 1 comprising a refrigerant circuit 2 and a coolant circuit 3, - the refrigerant circuit 2 comprising at least a compressor 4, an internal heat exchanger 5, an external heat exchanger 6 and an evaporator 7, - the coolant circuit 3 comprising at least a first heat exchanger associated with a component 8, a second heat exchanger associated with a component 9 and a radiator 11, - a fluid/fluid heat exchanger 12 installed in the refrigerant circuit 2 and in the coolant circuit 3, the coolant circuit 3 comprising a first loop 13 and a second loop 14 which are interconnected by an interconnection device 15, characterized in that the first loop 13 comprises the fluid/fluid heat exchanger 12, the first heat exchanger associated with a component 8 and a means 16 for heating the coolant which means is interposed between the interconnection device 15 and the fluid/fluid heat exchanger 12, the second loop 14 comprising the second heat exchanger associated with a component 9 and the radiator 11.

Device for assembling capacitors for an electronic converter

Abstract: The device (100) for assembling capacitors (200) according to the invention is intended for an electronic converter with a plurality of arms provided with transistors. The device comprises a bus bar (11) with positive polarity and a bus bar (12) with negative polarity. According to the invention, the bus bar with positive polarity and the bus bar with negative polarity are superposed one on top of the other without electrical contact. Preferably, the bus bar with positive polarity comprises a width (L1) smaller than the width (L2) of the bus bar with negative polarity. The device for assembling capacitors further comprises a support part (13) for insulating and indexing, arranged between the bus bar with positive polarity and the bus bar with negative polarity. Said support part for insulating and indexing is typically formed from PBT plastic material reinforced with fibreglass.

Optical module with common part reference for motor vehicle lighting and/or signalling

Abstract: The invention relates to an optical module (1) for a vehicle lighting and/or signalling device, comprising at least one light source (2, 7) to (9) able to generate a light beam, a cooling device (3) able to dissipate heat and a device (4) for focusing the light beam, characterized in that the focusing device (4) is carried directly by the cooling device (3).

Analysis of the load sharing characteristics of the series-parallel connected interleaved LLC resonant converter

Abstract: Based on the fundamental approximation equivalent circuit of a single cell LLC resonant converter, this paper has developed the equivalent circuit of the interleaved LLC resonant converter, with its primary side connected in series and its secondary side connected in parallel. The load sharing characteristics of the series-parallel connected interleaved LLC converter is then analyzed and a current sharing mathematical model is developed to illustrate the current sharing principles. A case example of a 300/12–18V, 2.5kW, 500kHz interleaved LLC resonant converter is designed and simulated to verify the proposed load sharing model. The established model's error analysis is conducted and the developed model is proved to have relatively high precision in current continuous mode and satisfactory precision in current discontinuous mode. The Monte Carlo analysis is executed to get an overall review of current sharing among different frequencies and the Worst Case analysis is executed to reveal the sensitivity of different influencing factors. The paper provides innovative and valuable references for the dimensioning of series-parallel connected interleaved LLC resonant converters.

Optical device and signaling and/or lighting system

Abstract: The device has an exit portion (14) that emits, via its exit face (8), light rays emanating from first LED light source (3) and a second LED light source. The exit portion is integrated into a first light guide (1) that allows the light rays from the first source to propagate toward the exit portion. A second cylindrical light guide (2) is distinct from the first light guide and allows the light rays from the second source to propagate toward the exit portion. The exit face comprises a deviating relief with parallel striations (11) oriented along thickness of the first light guide. The first and second light sources respectively emit a change-of-direction indicator light flux and a daytime running lighting flux. An independent claim is also included for a lighting system.

Experimental Characterization of the Iron Losses Variability in Stators of Electrical Machines

Abstract: Manufacturing processes may introduce a significant variability on the magnetic properties of claw pole generator stators. The present work deals with the analysis of two groups of stator samples. The first group is composed of 28 slinky stators (SS) and the second group is composed of 5 stators, manufactured using laser cut stacked laminations (SL). Both groups are made from the same lamination grade and with the same geometrical dimensions. Characterization was carried out for several levels of excitation field at 50 Hz. A noticeable variability has been observed on the iron losses for SS samples, whereas it appears to be not significant for SL samples. The loss separation technique has then been investigated for the SS samples. Results show that the variability of static losses is more important than the one of dynamic losses.

Control and display module for motor vehicles

Abstract: The invention relates to a control and display module for motor vehicles, comprising: a display screen for displaying data; a capacitive touchpad for entering user commands, said touchpad at least partially overlapping the display screen; and a casing in which the display screen and the touchpad are housed, said casing comprising a front frame The control and display module also comprises a retaining protective film having a thickness of between 05 and 12 mm, which is attached to the external edges of the front frame of the casing, the touchpad being secured at the rear of said film in a suspended manner

Optische Objekterfassungseinrichtung mit einem MEMS und Kraftfahrzeug mit einer solchen Erfassungseinrichtung

Abstract: Die Erfindung betrifft eine optische Objekterfassungseinrichtung (1) fur ein Kraftfahrzeug (26), mit einer Sendeeinheit (2) zum Aussenden eines Sendelichtstrahls (5), mit einer Empfangseinheit (3) zum Empfangen eines Empfangslichtstrahls (8), und mit einer elektronischen Auswerteeinrichtung zum Detektieren eines fahrzeugexternen Objektes in einer Umgebung des Kraftfahrzeugs (26) abhangig von dem Empfangslichtstrahl (8), wobei die Sendeeinheit (2) einen Sender (4) zum Erzeugen des Sendelichtstrahls (5), einen steuerbaren Mikrospiegel (11) aufweist, mittels welchem der Sendelichtstrahl (5) zumindest in einer ersten Schwenkrichtung (10) verschwenkbar ist, und eine im Sendestrahlengang hinter dem Mikrospiegel (11) angeordnete Sendelinse (17) aufweist, wobei zumindest entlang der ersten Schwenkrichtung (10) die Sendelinse (17) als Konkav-Konvex-Linse mit einer konkav gekrummten Oberflache (18), welche dem Mikrospiegel (11) zugewandt ist, und mit einer konvex gekrummten Oberflache (19) ausgebildet ist.

Computation of optimal current references for flux-weakening of multi-phase synchronous machines

Abstract: Multi-phase synchronous machines are more and more used in specific applications where high power density, low bus voltage, wide speed range and fault-tolerant capabilities are required. Due to the high number of degrees of freedom, multi-phase machines are difficult to optimally operate in flux-weakening zones. This paper proposes a technique to numerically compute optimal current references that can be used for feed-forward flux-weakening techniques in order to exploit the maximum machine performances for given DC bus voltage and current limits. The proposed technique is applied to a five-phase permanent magnet synchronous machine specifically developed for an automotive application.

torque transmission device for a motor vehicle

Abstract: The invention relates to a torque transmission device for a motor vehicle, comprising a torque input member (1) and a torque output element (19) rotatable relative to each other, and elastic members (15) mounted between the input and torque output elements (1, 19). The torque output element (19) comprises an annular web (26), the elastic members (15) being mounted between the annular web (26) and the torque input member (1). The device further comprises tilting means comprising damping pendulum masses (39) movably mounted on at least one annular support (33) fixed to the annular web (26). The support (33) has a radially inner region (34) attached to the annular web (26) and a radially outer area (36) on which are mounted the pendular mass (39).

Optical system for generating a composite light beam with wide angular aperture

Abstract: An optical system for generating, from a light source and along an optical axis (X-X), a composite light beam comprising at least one central light beam and at least one peripheral light beam surrounding the central light beam. The system directs towards an optical diffuser for redistributing the composite light beam in a predetermined manner in a plane orthogonal to the optical axis (X-X). The optical system is configured for generating, in a second plane comprising the optical axis (X-X), the central light beam and/or the peripheral light beam in such a manner that light rays of the central light beam and/or of the peripheral light beam are respectively inclined, on either side of the optical axis (X-X), with respect to the optical axis (X-X).

Touch-sensitive operating device for a motor vehicle and motor vehicle

Abstract: The invention relates to a touch-sensitive operating device (1) for a motor vehicle, having an elongated actuating lever (2), particularly a steering column lever, having a sensor arrangement comprising at least one touch-sensitive or proximity-sensitive sensor element (4) arranged on the actuating lever (2), and having an electronic evaluation device which is coupled to the at least one sensor element (4) and is designed to detect touching of the at least one sensor element (4) and/or an approach to the at least one sensor element (4). The evaluation device is designed to recognise an operating gesture of an operator at the actuating lever on the basis of a combination of at least two detected touches of the sensor arrangement and/or approaches to the sensor arrangement, and to initiate a predetermined operating function on the basis of the recognised operating gesture.

Heat exchanger, especially for a motor vehicle, and corresponding air intake device

Abstract: The invention relates to a heat exchanger for heat exchange between at least two fluids, especially for a motor vehicle, comprising a bundle (7) for heat exchange between said fluids, and a housing (9) for receiving said bundle (7), said housing (9) having at least one raised edge (11). The invention is characterised in that the exchanger also comprises a seal (15) consisting of a rigid plastic material, said seal enveloping said at least one raised edge (11) and being designed to ensure the tightness between the exchanger and a container of said exchanger. The invention also relates to an air intake device comprising such a heat exchanger and an air intake collector.

Stacked plate exchanger casing and exchanger comprising such a casing

Abstract: The invention relates to a casing (10) of a stacked plate exchanger (1), said casing (10) defining a volume intended to accommodate a plurality of stacked plates (2) which is configured for the circulation of a fluid that is to be cooled and of a cooling fluid, said casing (10) defining an interface (53, 54) able to accept a header (75, 76, 80) for the fluid that is to be cooled and comprising a first part (5) able to move in the direction of stacking of the plates (2) when the stacked plates (2) are being brazed, and a second part (35) which has at least one side wall (51, 52) defining said interface (53, 54), said first (5) and second (35) parts being able to be assembled with one another when the plates (2) are being brazed. The invention also relates to a heat exchanger (1) comprising such a casing (10).

Driver assistance device having a plurality of ultrasound sensors and vehicle having such a driver assistance device and method for operating a driver assistance device

Abstract: The invention relates to a driver assistance device ( 2 ) having a plurality of ultrasound sensors, wherein at least one first ultrasound sensor ( 8 to 11, 17, 18, 21 to 24 ) has a normal mode as an operating mode in which transmitted ultrasound signals are unencoded and/or in which the first ultrasound sensor ( 8 to 11, 17, 18, 21 to 24 ) is designed for receiving unencoded ultrasound signals, and at least one second ultrasound sensor ( 6, 7, 13 to 16, 19, 20 ) can be operated in two different operating modes and has the normal mode as a first operating mode and has a special mode as a second operating mode, in which transmitted ultrasound signals are encoded and/or in which the second ultrasound sensor ( 6, 7, 13 to 16, 19, 20 ) is designed for receiving encoded ultrasound signals. The invention also relates to a vehicle ( 1 ) having a driver assistance device ( 2 ) and a method for operating a driver assistance device ( 2 ).

Lighting and/or signalling device for an automobile including a surface light source

Abstract: The device (10) has a fixing element (2) for fixing a surface light source (1), where a light emission of the surface light source is higher than 10 cm 2>. The surface light source includes an organic LED (OLED). A fastener includes a frame (3), where the frame surrounds partially or completely the surface light source. The frame is presented in a form that matches a circumference of the surface light source. The fastener is provided with a clipping element, a fastening element, a bonding element, a welding element, a screwing element and/or a heading element.

Analytical model of magnet eddy-current volume losses in multi-phase PM machines with concentrated winding

Abstract: This paper studies magnet eddy-current losses in permanent magnet (PM) machines with concentrated winding. First of all, space harmonics of magnetomotive force (MMF) and their influence on magnet losses in electrical machines are investigated. Secondly, analytical model of magnet volume losses is developed by studying the interaction between MMF harmonics wavelengths and magnet pole dimensions. Different cases of this interaction are studied according to the ratio between each harmonic wavelength and magnet pole width (following flux density variation). Then various losses sub-models are deduced. Finally, using this analytical model, magnet volume losses for many slots/poles combinations of 3, 5, and 7 phase machines with concentrated winding are compared. This comparison leads to classify combinations into different families depending on their magnet losses level. Besides, in order to validate the theoretical study, Finite Element models are built and simulation results are compared with analytical calculations.

Wiper blade for cleaning vehicle windows, and wiper arm

Abstract: A wiper blade for cleaning vehicle windows is disclosed. The wiper blade includes a wiper blade body extending in a wiper blade longitudinal axis, with a wiper rubber and a wiper blade adapter on the wiper blade body. The wiper blade adapter forms a mechanical connection, constructed as detent connection, of the wiper blade to a wiper arm adapter arranged on a wiper arm. The wiper blade adapter and the wiper arm adapter are connected to or released from one another at least substantially in a direction which extends perpendicularly to the wiper blade longitudinal axis. Spring are provided on the wiper blade adapter and/or on the wiper arm adapter, which provide an initial spring tension when the wiper blade is mounted on the wiper arm, and bring about a releasing force between the wiper arm adapter and the wiper blade adapter when the detent connection is released.