• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a system and method for diffusing air for a vehicle passenger compartment comprising at least one aerator (60) and means (50) for orienting said at least one aerator, suitable for directing an air flow ( 62) delivered by said aerator. According to the invention, a device for detecting a face (Vi) of at least one person present in the passenger compartment is connected to said orientation means so as to direct said flow of air towards at least one or the faces detected.
    公开号:FR3047927A1
    申请号:FR1600297
    申请日:2016-02-22
    公开日:2017-08-25
    发明作者:Bey Moussa Nacer
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    The invention relates to a system and method for diffusing air for a vehicle passenger compartment. It also relates to an air conditioning system equipped with such a diffusion system and a vehicle interior equipped with such an air conditioning system. It is particularly intended for the field of motor vehicles.
    It is known air distribution systems in a motor vehicle interior and more particularly air distribution systems for cooling the passengers of a motor vehicle with an air conditioning system.
    Despite the presence of an air conditioning system, achieving a pleasant thermal environment inside a motor vehicle in sunny weather, or more generally in hot weather, is much more difficult than in a large fixed area for several reasons: - The volume of air in a passenger compartment is relatively small and the windows create a greenhouse effect; this greenhouse effect can be fought by opening the windows and creating drafts, which however is antithetical to the operation of an air-conditioning, - The internal parts of the passenger compartment subjected to the luminous radiation tend to heat and therefore to contribute to the temperature rise in the passenger compartment; these parts cool much more slowly, - Depending on the orientation of the vehicle with respect to the sun, the passengers can be subjected to very different conditions, - Due to the relatively small size of the cabin, the aerators of ventilation are located relatively close to the passengers and the adjustment of the fresh air jet is delicate, both in temperature, direction and intensity.
    From EP 1 236 593 a vehicle air conditioning system is known comprising at least one temperature sensor for measuring the temperature of a surface and an aerator for directing an air flow to that surface. Depending on the measured temperature, the flow is oriented, formed in a jet or in a diffuse flow. The surface whose temperature is measured can be that of a passenger and the system aims to maintain this temperature within a certain range of values.
    This system suffers from several disadvantages: the "surface temperature" of a passenger is difficult to determine and in any case it is not always representative of passenger comfort. The invention proposes another approach. It starts from the observation that the feeling of comfort in heat is largely due to the application of a fresh air flow on the face. But the head of a passenger is not at a fixed place in the passenger compartment, if only because of the difference in size between people. Usually the passenger regulates the aerator (s) himself so as to direct the flow of air towards his face. However, this is inconvenient because once the setting or settings obtained, the passenger should not move if he wants to keep the flow of fresh air on his face.
    Consequently, the invention proposes an air diffusion system for a vehicle cabin comprising at least one aerator and means for orienting said at least one aerator adapted to direct an air flow delivered by said aerator, characterized in that it further comprises a device for detecting a face of at least one person present in the passenger compartment connected to said orientation means so as to direct said flow of air towards at least the detected face or faces.
    The system according to the invention is particularly but not necessarily included in the air-conditioning system of a motor vehicle, such as a car, a truck, a bus ... It conventionally comprises air distribution i vents. air conditioning or outdoor air, these aerators having adjustable flaps so as to vary the orientation of the air flow they deliver. Concomitantly or alternatively, they can be mounted themselves on ball and pivoting around one or more axes. Throughout the text, will be called "means of orientation" means for guiding the flaps of an aerator and / or the aerator as a whole.
    The air diffusion aerators are advantageously provided with actuators so as to make them controllable by electrical and / or electronic means, so that the orientation of the air flow they can vary can be varied. deliver without human intervention.
    The system is characterized by its ability to: - detect the face of at least one person in the passenger compartment, called a passenger further, whether or not this person drives, - orient at least one aerator so as to direct a flow of look towards this face.
    This system therefore adapts in real time to the position of the head of the passenger or passengers to direct the flow of air to their head.
    It is considered that the temperature of the diffused air and its speed are determined by the user by conventional means.
    Advantageously, the detection device may comprise at least one optical sensor, in particular a sensor capable of forming an image of a face.
    Such an optical sensor is for example a camera, a web-cam or other, capable using an optical and a sensor placed behind this optic, to generate an electrical signal representative of an image. Advantageously, said sensor is provided with optics with a wide angle of view, so that a single optical sensor can form an image of a relatively large volume.
    Advantageously, the detection device may comprise means for processing the signals delivered by the optical sensor or sensors, said processing means being able to detect one or more faces.
    This signal processing device comprises for example a first microprocessor associated with a first memory on which is recorded software capable of detecting the faces present in an image. The software, from the usual features of a face, is adapted, by form recognition, to identify a face in an image.
    This image processing is followed by the following geometric calculations: - Calculation of the orientation of this face with respect to the optical sensor from its position in the plane of the image, - Calculation of the position of the face in the passenger compartment ; such a calculation requires an estimate of the distance between the optical sensor and the passenger, - Calculation of the orientation to be given to each aerator so that the flow of air it delivers is directed towards the face.
    These calculations are advantageously carried out by the signal processing device.
    Advantageously, a single optical sensor is used for several or all passengers in the passenger compartment.
    Advantageously, said orientation means are configured to direct the flow of air towards the same face from all or part of said aerators. In other words, several aerators can simultaneously direct their airflow to the head of a passenger. These passengers include those in the first row of seats, called front seats, including the driver, but not only.
    Advantageously, the detection device comprises means for controlling said orientation means adapted to direct, in particular center, at least one air flow to a face.
    These control means comprise, for example, a second microprocessor associated with a second memory on which is recorded software capable of controlling the orientation means of the aerator (s) closest to the detected face. Of course, the first and second microprocessors can be confused, as well as the first and second memories.
    Advantageously, the control means may comprise a timer, for example, set according to a level of speed of movement of the face. A timer can be, for example, a production of an output signal separated from an input signal by a determined time interval.
    This prevents the aerators follow a passenger in all its rapid movements.
    Advantageously, the control means and the orientation means are further provided to adjust the divergence of the air jet diffused by an aerator.
    In addition to the orientation of the airflow delivered by an aerator, the invention comprises means for determining its divergence, that is to say the solid angle in which it is delivered, the orientation of the air flow being considered to be that of the median axis of the solid angle.
    Advantageously, the divergence of the jet of an aerator can be determined according to the distance between the face and said aerator.
    The divergence given to the airflow will be smaller as the distance between the aerator and the head of the passenger will be greater: the further the passenger is away from the aerator, the more the jet delivered is concentrated.
    Advantageously, the divergence of the jet of an aerator can be determined according to the size of the detected face image.
    In this case, the control means use a measurement of the size of the face detected by the optical sensor; the jet of air will be so much smaller that this size will be weak; conversely, if the passenger leans forward, the size of his face will increase and the air jet will be more divergent.
    These embodiments are not exclusive of a manual adjustment by the user of the divergence of the air jets, the latter being then automatically adjusted by the control means according to the position of his head at any moment in the air. 'Living.
    Advantageously, the air diffusion system may comprise means for activating and / or deactivating the face detection device. The user may choose to disable the automatic face detection device. The invention also relates to an air conditioning system for a vehicle cabin, comprising an air diffusion system as described above. The invention also relates to a vehicle interior comprising such an air conditioning system.
    Advantageously, the passenger compartment comprises at least one row of seats arranged transversely in said passenger compartment and the detection system comprises a single optical sensor per row.
    When the optical sensor is arranged for example at the dashboard, it can detect the faces of the passengers in the first row of seats, including the driver, and the orientation means control the aerators associated with this first row, c that is to say, those who can reach the passengers of this row.
    On the other hand, the faces of the passengers sitting on the row or rows behind the driver's side may not be easily visible by this sensor. To these rows are associated other air diffusion aerators, for example in the amounts between front door and rear door, in the armrests ... Therefore the vehicle advantageously comprises as many optical sensors as rows of seats. On the other hand, the signal processing means, the calculation means and the control means are advantageously shared. An optical sensor being associated with a row of seats, this determines an average distance between the sensor and the passengers used in the calculation of the position of the face. The invention also relates to an air diffusion method for a vehicle interior comprising at least one aerator, means for orienting said at least one aerator so as to direct a flow of air delivered by said aerator and a ventilation device. detection of a face of at least one person, in particular at least one optical sensor, characterized in that it comprises the following steps: detecting at least one face in the image delivered by means of said detection device, in particular by the at least one optical sensor, - activate the orientation means of said at least one aerator so as to direct the flow of air to said at least one face.
    Advantageously, the method comprises the following steps: taking a view of the passenger compartment using the at least one optical sensor, processing the signals delivered by said sensor in order to detect at least one face, calculating the position of said face in the image, - calculate the position of said face in the passenger compartment, - assign at least one aerator to each face, - calculate the orientation to be given to each aerator so that the air jet that it delivers reaches a face, - orient at least one aerator to direct its air jet of said aerator towards said face.
    Advantageously, the method may comprise the following step: in the case where a single face is detected, affect all the aerators to this face.
    The method may also include a step where the passenger activates or deactivates: the automatic orientation function-the orientation of all the aerators.
    Embodiments and variants will be described hereinafter, by way of non-limiting examples, with reference to the accompanying drawings in which:
    FIG. 1 is a schematic diagram of an air diffusion system according to the invention,
    FIG. 2 represents an image taken by an optical sensor in the case of two passengers,
    FIG. 3 represents an elevational view of a driver or passenger,
    FIG. 4 represents a plan view of a driver and a passenger,
    Figure 5 shows a plan view of a single driver.
    As illustrated in FIG. 1, the air diffusion system according to the invention comprises a detection device, in particular an optical sensor 10, for example a camera, here placed above the windshield in a vehicle space, which observes a scene according to an angle φ of shooting. The optical sensor is connected to a signal processing device 20 which receives the image taken by the optical sensor. The signal processing device 20 comprises software stored in a memory and which can be executed in a microprocessor so as to extract from this image, in known manner, one or more faces of an image from the characteristic features of the image. a face. At the end of this treatment, we obtain the coordinates (x, y,) of the center of a face Vi in the plane of the image.
    FIG. 2 illustrates an image taken by the same optical sensor, in which two passengers 1, 2 and therefore two faces V 1, V 2 can be distinguished. The face Vi of the first passenger 1 has coordinates (xi, yi) in this image, those of the face V2 of the second passenger 2 being (x2, y2). Said sensor here forms an image of all passengers but such a vertical angle is not necessary, the simple formation of an image from the seat or even a certain height from the seat. seats of the passenger compartment that may be sufficient.
    The coordinates (Xj, y,) are transmitted to a calculation means 30 capable of transforming them into coordinates (Xj, Yj) of this face Vj in the plane P in which the passenger 1 whose face has been detected is located. The means of calculation uses for this the position of the optical sensor 10 and the distance d between this sensor and the plane P, known by construction and / or deduced in correlation with the position of the seats. The plane P is slightly ahead of that of the back of the row of seats on which the passenger sits, for example of the order of 20 cm.
    The position of the plane P is in particular illustrated, schematically, in FIG.
    The coordinates (X ,, Y0) are transmitted to a calculation means 30 which calculates the orientations (ay, Py) to be given to the different aerators Aj capable of reaching the head whose face Vj has been detected. to a horizontal plane and a vertical plane: - Let the angle of orientation to be given in the vertical plane to the aerator Aj so that its air jet reaches the face Vj, - Let Pij be the angle of orientation to be given in the horizontal plane, counted clockwise, the aerator Aj so that its jet of air reaches the face Vj.
    For this purpose, the calculation means 30 first performs an assignment of each aerator Aj to a face Vj. This assignment is done naturally insofar as the vehicle interiors are very generally symmetrical around a vertical median plane. From then on all the aerators on one side of this plane of symmetry are assigned to the passenger who is on the same side of this plane.
    Figure 4 illustrates this situation: the A! and A2 located to the left in the direction of the march of the median plane of symmetry are assigned to the passenger 1 to the left of this plane, the aerators A3 and A4 on the right are assigned to the passenger 2 on the right of this plane. With respect to a longitudinal direction D of the vehicle, the air jets of the aerators Ai to A4 are thus oriented as follows in the horizontal plane: - Aerator Ah angle βι, ι to the first passenger 1, - Aerator A2, angle βιΐ2 to the first passenger 1, - Aerator A3, angle β2> 3 to the second passenger 2, - Aerator A4, angle β2) 4 to the second passenger 2.
    The same goes for the angles 0¾ in the vertical plane.
    As illustrated in FIG. 5, an exception occurs when only one face is detected, for example when the driver is alone; another example is where, when stationary, the non-conducting passenger is alone in the cockpit. In this case, advantageously, the calculation means affects all the aerators to the single detected face. In the case of the driver alone, this can lead him to lower the air conditioning level and thus to save energy. Here, the aerators A3 and A4 located to the right of the median plane of symmetry are this time assigned to the single passenger 1. In this case the orientation angles become respectively βι> ΐ5 β] 2, β13 and βιί4. Nevertheless the passenger may find this affectation of all the aerators on his face unpleasant; the system advantageously comprises means for activating and / or deactivating this function for assigning all the aerators on the same passenger. In this case, the unassigned aerators A3, A4 are either deactivated or their jet is directed axially in the passenger compartment.
    In the case where the system can not detect any face (presence of a large hat for example), it has the jet of aerators for example in the longitudinal direction D of the vehicle.
    Referring again to FIG. 1, it can be seen that the diffusion system according to the invention also comprises one or more aerators 60, for example placed on the instrument panel 70 of the vehicle, and orientation means of said one or more aerators 60, for example one or more actuators 50. Said system further comprises control means 40 controlling said actuators 50.
    According to the invention, said detection device is connected to said orientation means. More precisely, here, the control means 40 are configured to be controlled by the calculation means 30.
    The orientations (dy, Py) are transmitted to said control means 40 so as to orient flaps 61 of the aerator and / or the aerator itself. The aerator thus delivers an air jet 62 directed towards the head 11 of the passenger.
    Advantageously, the aerator 60 can deliver an air jet 62 that is more or less divergent: the air jet 62a is more divergent than the air jet 62b which more precisely targets the head 11 of the passenger 1. This divergence can be the result of a calculation made by the calculation means 30 and based on the distance between the aerator and the head of the passenger, or on the size of the head of the passenger, calculated by the signal processing device 20.
    权利要求:
    Claims (15)
    [1" id="c-fr-0001]
    claims
    A vehicular air diffusion system comprising at least one aerator (60a-60d, Aj) and means (50) for orienting said at least one aerator for directing an air flow (62) delivered by said aerator, characterized in that it further comprises a device for detecting a face (Vi) of at least one person (1, 2) present in the passenger compartment connected to said orientation means so as to directing said airflow to at least the detected face (s).
    [2" id="c-fr-0002]
    2. air diffusion system for vehicle interior according to claim 1, characterized in that the detection device comprises at least one optical sensor (10), capable of forming an image of a face.
    [3" id="c-fr-0003]
    3. Air diffusion system according to claim 2, characterized in that the detection device comprises signal processing means (20) delivered by the optical sensor (s) (10), said processing means being able to detect one or more faces (Vi).
    [4" id="c-fr-0004]
    4. Air diffusion system according to claim 1 to 3, characterized in that the detection device comprises control means (40) of said orientation means (50) adapted to direct at least one air flow ( 62) to a face (Vi).
    [5" id="c-fr-0005]
    5. Air diffusion system according to claim 4, characterized in that the control means (40) comprise a timer.
    [6" id="c-fr-0006]
    6. Air diffusion system according to one of claims 4 or 5, characterized in that the control means (40) and the orientation means (50) are further provided to adjust the divergence of the jet of air (62) diffused by an aerator (Aj).
    [7" id="c-fr-0007]
    7. Air distribution system according to claim 6, characterized in that the divergence of the jet of an aerator (Aj) is determined as a function of the distance between the face (Vj) and said aerator and / or according to the size of the detected face image.
    [8" id="c-fr-0008]
    An air diffusion system according to any one of the preceding claims wherein said orientation means (50) is configured to direct airflow to the same face from all or part of said aerators.
    [9" id="c-fr-0009]
    9. Air diffusion system according to one of the preceding claims, characterized in that it comprises means for activation and / or deactivation of the face detection device.
    [10" id="c-fr-0010]
    10. Air conditioning system for vehicle cabin, comprising an air diffusion system according to one of the preceding claims.
    [11" id="c-fr-0011]
    Vehicle interior having an air conditioning system according to claim 10.
    [12" id="c-fr-0012]
    12. Vehicle interior according to claim 11, said passenger compartment having at least one row of seats arranged transversely in said passenger compartment, characterized in that the detection system comprises a single optical sensor (10) per row.
    [13" id="c-fr-0013]
    13. Method for diffusing air for a vehicle cabin comprising at least one aerator (Aj), means for orienting (50) said at least one aerator so as to direct an air flow (62) delivered by said aerator and a device for detecting a face (Vj) of at least one person (1,2), characterized in that it comprises the following steps: - detecting at least one face (Vj) using said device detection, - activate the orientation means (50) of said at least one aerator so as to direct the flow of air to said at least one face.
    [14" id="c-fr-0014]
    14. The method of air diffusion according to claim 13, wherein said detection device comprises at least one optical sensor (10), said method being characterized in that it comprises the following steps: taking a view of the cabin using the at least one optical sensor (10), - processing the signals delivered by said sensor to detect at least one face (Vj), - calculate the position of said face in the image, - calculate the position of said face in the passenger compartment, - assigning at least one aerator to each face, - calculating the orientation to be given to each aerator (Aj) so that the air jet (62) that it delivers reaches a face, - orient at least one aerator to direct its air jet of said aerator towards said face.
    [15" id="c-fr-0015]
    15. Air diffusion method according to one of claims 13 or 14, characterized in that it comprises the following step: - in the case where a single face (Vj) is detected, affect all the aerators (Aj ) to this face.
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    同族专利:
    公开号 | 公开日
    CN109311364A|2019-02-05|
    EP3419841A1|2019-01-02|
    US20190054798A1|2019-02-21|
    FR3047927B1|2019-06-14|
    WO2017144792A1|2017-08-31|
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    法律状态:
    2017-02-28| PLFP| Fee payment|Year of fee payment: 2 |
    2017-08-25| PLSC| Search report ready|Effective date: 20170825 |
    2018-02-26| PLFP| Fee payment|Year of fee payment: 3 |
    2019-02-28| PLFP| Fee payment|Year of fee payment: 4 |
    2020-02-28| PLFP| Fee payment|Year of fee payment: 5 |
    2021-02-26| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1600297|2016-02-22|
    FR1600297A|FR3047927B1|2016-02-22|2016-02-22|AIR DIFFUSING SYSTEM AND METHOD FOR VEHICLE CABINET|FR1600297A| FR3047927B1|2016-02-22|2016-02-22|AIR DIFFUSING SYSTEM AND METHOD FOR VEHICLE CABINET|
    US16/078,335| US20190054798A1|2016-02-22|2017-02-02|Air diffusion system and method for vehicle passenger compartment|
    CN201780020107.4A| CN109311364A|2016-02-22|2017-02-02|Air diffuser system and method for vehicle's passenger compartment|
    PCT/FR2017/050236| WO2017144792A1|2016-02-22|2017-02-02|Air diffusion system and method for vehicle passenger compartment|
    EP17707618.9A| EP3419841A1|2016-02-22|2017-02-02|Air diffusion system and method for vehicle passenger compartment|
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