• 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 seat (2) in particular for a passenger transport vehicle, said seat comprising a seat (8), a backrest (10) pivoting relative to the seat (8), a headrest (12) and an active noise control device (32) comprising: - at least one error sensor (36) capable of sensing a minimizing acoustic field and generating a reference signal, - a reference sensor capable of sensing an acoustic field undesirable, - a processing unit (34) capable of generating a cancellation signal from the reference signal and a signal representative of the undesirable acoustic field, and - at least one loudspeaker (40) capable of emitting a acoustic cancellation field from the cancellation signal, characterized in that the headrest (12) comprises a support (16) and a first deformable envelope (18) carried by the support and in that said at least an error sensor (36) is arranged on said first envelope defor mable.
    公开号:FR3064557A1
    申请号:FR1752921
    申请日:2017-04-04
    公开日:2018-10-05
    发明作者:Sylvain Pons
    申请人:Zodiac Actuation Systems SAS；
    IPC主号:
    专利说明:

    © Publication no .: 3,064,557 (to be used only for reproduction orders)
    ©) National registration number: 17 52921 ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY
    COURBEVOIE © Int Cl 8 : B 60 N 2/24 (2017.01), B 60 N2 / 44
    A1 PATENT APPLICATION
    ©) Date of filing: 04.04.17. © Applicant (s): ZODIAC ACTUATION SYSTEMS (© Priority: Simplified joint stock company - FR. @ Inventor (s): PONS SYLVAIN. ©) Date of public availability of the request: 05.10.18 Bulletin 18/40. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): ZODIAC ACTUATION SYSTEMS related: Joint stock company. ©) Extension request (s): © Agent (s): CABINET PLASSERAUD.
    SEAT IN PARTICULAR FOR A PASSENGER TRANSPORT VEHICLE.
    FR 3,064,557 - A1 (h /) The invention relates to a seat (2) in particular for a passenger transport vehicle, said seat comprising a seat (8), a backrest (10) pivoting relative to the seat (8 ), a headrest (12) and an active noise control device (32) comprising:
    - at least one error sensor (36) capable of capturing a minimizing acoustic field and of generating a reference signal,
    - a reference sensor capable of picking up an undesirable sound field,
    a processing unit (34) capable of generating a cancellation signal from the reference signal and from a signal representative of the undesirable acoustic field, and
    - at least one loudspeaker (40) capable of emitting a cancellation acoustic field from the cancellation signal, characterized in that the headrest (12) comprises a support (16) and a first deformable envelope (18) carried by the support and in that said at least one error sensor (36) is arranged on said first deformable envelope.

    Seat especially for passenger transport vehicle
    The present invention is situated in the field of transport vehicle seats and in particular in the field of seats for aircraft.
    It is known to equip aircraft seats with an active noise control device. However, these active noise control devices are not always very effective. They are difficult to adjust because the sound is perceived differently by passengers with different body shapes, by the same passenger in two different positions or depending on the seat or lying position of the seat.
    The present invention aims to provide a seat equipped with an active noise control device which adapts to the different morphologies of the passengers, the different positions that a passenger can take as well as the different position of the seat.
    To this end, the invention provides a seat, in particular for a passenger transport vehicle, said seat comprising a seat, a backrest pivoting relative to the seat, a headrest and an active noise control device comprising:
    - at least one error sensor capable of capturing a minimizing sound field and of generating a reference signal,
    - a reference sensor capable of picking up an undesirable sound field,
    - a processing unit capable of generating a cancellation signal from the reference signal and a signal representative of the undesirable acoustic field,
    - at least one loudspeaker capable of emitting a cancellation acoustic field from the cancellation signal, characterized in that the headrest comprises a support and a first deformable envelope carried by the support and in that said at least one error sensor is arranged on said first deformable envelope.
    According to particular embodiments, the seat includes one or more of the following characteristics:
    - the seat includes:
    a pump capable of circulating a filling fluid inside or outside the first deformable envelope to expand or contract the first deformable envelope, and
    a control unit capable of controlling the deformation of the first deformable envelope between the contracted form and the expanded form;
    - the first deformable casing includes a pressure sensor capable of measuring the pressure of the filling fluid inside the first deformable casing, and in which the processing unit comprises:
    a memory storing at least two secondary transfer functions, each secondary transfer function being characteristic of the acoustic modifications induced by at least torque comprising an error sensor and a loudspeaker, and
    - a calculation unit suitable for selecting a secondary transfer function in the memory as a function of the pressure measured by the pressure sensor, said cancellation signal being generated from said selected secondary transfer function;
    - in which the control unit includes a man-machine interface capable of being piloted by the passenger;
    - wherein the first deformable envelope further comprises a filling material; said filling material being one of a fibrous material, a granular material, a viscous material, a liquid material and a foam, polystyrene beads;
    - The seat further comprises comfort balloons arranged on said seat and in which said pump is also able to circulate the filling fluid in or outside said comfort balloons;
    - the first deformable envelope comprises:
    a piezoelectric material, at least one voltage source and electrical wires connecting the piezoelectric element to said at least one voltage source, and
    a control unit capable of controlling the deformation of the piezoelectric element, the control unit comprising a man-machine interface capable of being controlled by the passenger;
    - The seat comprises an additional deformable envelope, said additional deformable envelope being movable relative to the first deformable envelope, said additional deformable envelope comprising an additional error sensor capable of transmitting an additional reference signal to the processing unit;
    - Said additional deformable envelope comprises a connector connected to said at least one additional error sensor capable of generating an additional reference signal, and in which the first deformable envelope comprises an additional connector connected to the processing unit, the connector being clean to be connected to the complementary connector to transmit the additional reference signal to the processing unit, the processing unit being suitable for generating the cancellation signal from the additional reference signal.
    - in which the at least one loudspeaker is capable of further broadcasting audio content coming from a communication device, and in which the processing unit is capable of calibrating at least one secondary transfer function as a function of the broadcast audio content, minimizing sound field and unwanted sound field, said calibration being carried out periodically with a predefined frequency, said cancellation signal being generated from said calibrated secondary transfer function.
    the seat which includes a backrest actuator capable of pivoting the backrest relative to the seat and in which the control unit comprises a map associating with each backrest position relative to the seat a quantity of filling fluid contained in the first deformable envelope so that the control unit is capable of controlling the deformation of the first deformable envelope as a function of the position of the backrest with respect to the seat;
    the seat comprises at least two error sensors arranged on the first deformable envelope and in which the processing unit comprises:
    - a memory storing at least two secondary transfer functions; each secondary transfer function being characteristic of the acoustic modifications induced by at least torque comprising an error sensor and a loudspeaker, and
    - a calculation unit suitable for selecting a secondary transfer function in the memory as a function of the relative position of the backrest with respect to the seat, the cancellation signal being generated from said selected secondary transfer function.
    The invention will be better understood on reading the description which follows, given solely by way of example and made with reference to the figures in which:
    - Figure 1 is a schematic relief view of a seat according to a first embodiment of the invention;
    - Figure 2 is a schematic sectional view of a portion of the seat illustrated in Figure 1;
    - Figure 3 is a schematic view of the active noise control device according to the first embodiment of the invention;
    - Figure 4 is a sectional view of a part of a seat according to a second embodiment of the present invention;
    - Figure 5 is a perspective view of a deformable envelope according to the second embodiment of the invention;
    - Figure 6 is a schematic view of a variant of the active noise control device.
    The present invention relates to a seat 2 in particular for a passenger transport vehicle.
    This seat can for example be mounted in a seat module as shown in FIG. 1. This type of seat module is generally installed in a first class or business class area of a passenger aircraft. This seat module comprises box 4 which envelops the rear and the sides of the seat 2 and which is extended on one side by a work table 6 on which the passenger can deposit objects.
    With reference to FIG. 2, the seat 2 comprises a seat 8, a backrest 10 mounted to pivot relative to the seat 8, a headrest 12 fixed to the backrest, a footrest 14 fixed to the seat and an actuator backrest 15 able to rotate the backrest 10 relative to the seat 8.
    Preferably, the headrest 12 and the footrest 14 are also pivotable relative to the backrest 10 and respectively to the seat 8.
    Referring to Figure 2, the headrest 12 includes a support 16 and a deformable envelope 18 carried by the support, called the first deformable envelope.
    The support is for example constituted by a frame.
    The deformable envelope 18 is suitable for being expanded or contracted according to the needs of the passenger. The deformable envelope 18 is waterproof. It is for example made of plastic or elastomer.
    According to the first embodiment of the invention, the deformable envelope 18 contains a filling material 19, a filling fluid 20, an orifice 21 for passage of the filling fluid and a pressure sensor 22.
    The filling material 19 is for example constituted by polystyrene beads, a fibrous material, a granular material, a viscous material, a liquid material or a foam.
    The seat 2 also comprises a pump 24 capable of circulating a filling fluid inside or outside the deformable envelope 18 to expand or contract the deformable envelope, a flexible flexible pipe 26 connecting the outlet of the pump 24 at the orifice 21 of the deformable envelope and a control unit 28 suitable for controlling the starting or stopping of the pump.
    The pump 24 is for example fixed on the back of the backrest 10 or under the seat 8.
    In the embodiment illustrated in FIG. 1, the filling fluid 20 consists of the pressurized air contained in the cabin of the aircraft. According to a variant not shown, the filling fluid 20 can be a gas or a liquid contained in a reserve connected to the pump.
    The control unit 28 is also able to control the backrest actuator 15 to control the pivoting of the backrest 10 relative to the seat 8.
    In the illustrated embodiment, the control unit 28 comprises a man-machine interface 30 controllable by the passenger so that the passenger can adjust the inflation of the deformable envelope 18 according to its morphology, its sensitivity or his lying or sitting position. This man-machine interface 30 is for example a remote control or a tablet.
    As a variant, the control unit 28 can also be controlled by a central computer managed by the on-board staff.
    Advantageously, the passenger can adjust the inflation of the envelope of the headrest according to his morphology, his perception of well-being or his sitting or lying position.
    Seat 2 also includes an active noise control device 32 of the anticipation control type (from the English "Feed Foward Control"). The general operating principle of this type of active noise control device is known per se and will not be described in detail. This operating principle is for example described in the book "Adaptive Feed Foward Control of Low Frequency Interior Noise" by Thomas Kletschkowski published in 2012 in the Springer edition (CF. for example chapter 6.2).
    With reference to FIGS. 1 to 3, the active noise control device 32 comprises a processing unit 34, error sensors 36 connected to the processing unit, reference sensors 38 connected to the processing unit, and speakers 40 connected to the processing unit. In Figure 3, two error sensors 36, two reference sensors 38 and two speakers 40 have been shown by way of example.
    The processing unit 34 is able to generate a cancellation signal from the acoustic fields Cm picked up by the reference sensors 38 and the acoustic fields Ci picked up by the error sensors 36. With reference to FIG. 4, l the processing unit 34 comprises a memory 42 and a calculation unit 44 connected to the memory 42.
    The memory 42 stores in particular transfer functions, generally called secondary transfer functions FT1, FT2. Each secondary transfer function FT1, FT2 has been predefined beforehand as a function of the characteristics and of the positioning of each error sensor 36 - speaker 40 pair. For example, in the case where the seat 2 comprises two speakers 40 and two error sensors 36, the memory stores four secondary transfer functions.
    The calculation unit 44 is connected to the reference sensors 38, as well as to the pressure sensors 22 and to the loudspeakers 40. It is able to receive reference signals picked up by the reference sensors 38 as well as the information relative to the pressure measured Pm in the deformable envelope
    18.
    The calculation unit 44 is able to select the secondary transfer functions FT1, FT2 to be applied to the reference signals picked up by the reference sensors 38. The calculation unit 44 is also capable of generating a signal in phase opposition by compared to the reference signal. This signal in phase opposition is called cancellation signal.
    The computing unit 44 is capable of transmitting this cancellation signal to the speakers 40.
    The error sensors 36 are capable of picking up an acoustic field of minimization Cm. According to the present invention, the error sensors 36 are fixed to the deformable envelope 18.
    The reference sensors 38 are capable of picking up an undesirable acoustic field Ci upstream of the passenger's ears. In particular, the reference sensors 38 are fixed upstream of the error sensors by considering the direction of propagation of the acoustic field of the disturbance. They can, for example, be mounted on the outer periphery of the housing 4 or at the end of the work table 6 as illustrated in FIG. 1.
    The reference sensors 38 are capable of producing a reference signal. This reference signal is processed by the calculation unit 44. In particular, the calculation unit 44 is able to apply certain secondary transfer functions FT1, FT2 to the reference signal. The secondary transfer functions FT1, FT2 which will be applied are selected by the calculation unit 44 as a function of the pressure measured Pm by the pressure sensor 22 arranged in the deformable envelope 18.
    The loudspeakers 40 are capable of emitting a cancellation acoustic field from the cancellation signal. They are arranged in the deformable envelope 18, as shown in Figures 2 and 3. The speakers 40 are connected to the processing unit 34. The deformable envelope 18 performs a speaker function for the speakers . For this purpose, it is fixed to the same structure as the loudspeakers and it includes for example a geometry allowing a behavior called "bass reflex".
    Optionally, the seat 2 includes comfort balloons 46 connected to the pump 24 by flexible pipes 48, as illustrated in the embodiment of FIG. 2. The comfort balloons 46 are for example lumbar comfort balloons located at level backrest 10 suitable for pressing on the passenger's lumbar muscles to relieve it or comfort balloons located on the seat 8 on the east side of the passenger's thighs or comfort balloons located at the nape of the neck or on the side and on the other side of the headrest 12. The inflation of the comfort balloons 46 can be carried out by controlling the pump 24, for example using the man-machine interface 30.
    In operation, the passenger controls the pump 24 according to his needs. For example, the deformable envelope 18 is inflated when the seat 2 is in the extended position. Then, the sensor 22 measures the pressure inside the deformable envelope 18 and the active noise control device 32 regulates the cancellation acoustic field emitted by the speakers 40 as a function of this pressure in order to minimize the minimization sound field.
    As a variant, the loudspeakers are mounted in the internal face of the housing 4 at the height of the headrest.
    According to a first operating variant of the active noise control device, the passenger does not control the deformation of the deformable envelope. This deformation is carried out automatically by the control unit 28 as a function of the position of the backrest 10 relative to the seat 8. In this variant, the control unit 28 comprises a map (map) associating with each position Po of the backrest relative to the seat, a quantity of pressurized air contained in the deformable envelope 18. Thus, for example, according to this variant, the passenger controls the backrest actuator 15 using the control unit 28 to arrange the seat 2 in an elongated position. Then, the control unit 28 automatically controls the pump 24 to adjust the amount of pressurized air contained in the deformable envelope. The control unit 28 is also capable of adjusting, as a function of the position Po of the seat, parameters such as the gain of the cancellation signals, the weighting coefficient of the filters of the secondary transfer functions or the leakage coefficients of the filters of the secondary transfer functions.
    According to a second operating variant of the active noise control device, the deformable envelope 18 does not include a pressure sensor 22. In this case, the control unit 28 is able to transmit to the calculation unit 44 the position of the backrest Po relative to the seat. The calculation unit is able to select a secondary transfer function in the memory 32 as a function of the position Po received from the control unit 28. This secondary transfer function is applied to the reference signal.
    Figures 4 and 5 illustrate a seat 3 according to a second embodiment of the invention. This seat 3 according to this second embodiment is similar to the seat 2 according to the first embodiment except that it does not have a pump 24, a pressure sensor 22 and a flexible pipe 26, and because that the headrest 12 further comprises an additional deformable envelope 181 capable of being placed on the first deformable envelope 18.
    In this second embodiment, the control unit 28 no longer controls the deformation of the first deformable envelope 18. The active noise control device 32 operates according to the first or the second operating variant described above.
    The first deformable envelope 18 is similar to the first envelope according to the first embodiment. In particular, it incorporates loudspeakers 40 connected to the processing unit 34 and it carries on its external surface error sensors 36 connected to the processing unit 34. It is completely filled with a filling material. This filling material has not been shown in Figure 4 to simplify the figure.
    The additional deformable envelope 181 is movable relative to the first deformable envelope 18. It can be arranged on the first deformable envelope like a pillow. It can include a fastening strip of the type of strip of the registered trademark "Velcro" intended to be fixed to a complementary strip fixed on the first deformable envelope 18. The additional deformable envelope 181 can also be stored in a cupboard.
    The additional deformable envelope 181 comprises, on a first external surface, two additional error sensors 361 capable of generating additional reference signals. The additional error sensors 61 are suitable for transmitting the additional reference received signals to the processing unit 34.
    According to an embodiment not shown, this transmission is carried out by a non-wired communication link
    According to the embodiment shown in FIG. 4, the additional deformable envelope 181 comprises a connector 23 arranged on a face opposite to the face equipped with additional error sensors 361. The first deformable envelope 18 comprises an additional connector 25 flush with its outer surface. The connector 23 is connected to the additional error sensors 361. The complementary connector 25 is connected to the processing unit 34. The complementary connector 25 is intended to be connected to the connector 23 for transmitting the additional reference signals from the envelope additional deformable 181 to the processing unit 34, after placement of the additional deformable envelope 181 on the first deformable envelope.
    The calculation unit 44 is capable of recognizing that the connector 23 of the additional deformable envelope 181 is connected to the complementary connector 25 by a discrete address system. The calculation unit 44 is able to take into account the additional reference signals and all the associated parameters in place of the reference signals and parameters associated with the error sensors 36 included in the first deformable envelope. The loudspeakers 40 of the first deformable envelope are capable of diffusing the cancellation acoustic field.
    In operation, the processing unit 34 generates the cancellation signal from the reference signals of the error sensors 36 of the first deformable envelope, when the additional deformable envelope 181 is not placed on the first deformable envelope 18. This operating mode is for example used in a seated position. And the processing unit 34 generates the cancellation signal from the additional reference signals, when the additional deformable envelope 181 is placed on the first deformable envelope 18. This operating mode is for example used in the extended position.
    According to a variant of this second embodiment, the loudspeakers 40 are arranged in the internal face of the housing 4.
    According to a variant not shown, the deformable envelope 18 comprises a piezoelectric material, a voltage source and electrical wires connecting the piezoelectric element to the voltage source. In this embodiment, the control unit 30 controls the voltage applied to the piezoelectric element so as to contract or expand the deformable envelope 18. This control can be directly controlled by the passenger via the human interface -machine 30 or indirectly controlled by the passenger. In the latter case, the passenger controls the backrest actuator 15 to choose a position of the backrest 10 relative to the seat 8. The control unit 30 applies a voltage between the two faces of the piezoelectric element to using a map contained in his memory. Such mapping associates a tension with each position of the backrest in relation to the seat.
    According to an alternative embodiment of the invention illustrated in Figure 6, the speakers 40 are also connected to a communication device
    50. This communication device 50 is capable of broadcasting audio content via the speakers 40. Such a communication device 50 can for example be the audio channel of a video screen ("In Flight Entertainment") or a channel intended the dissemination of music or information relating to the flight.
    In this embodiment illustrated in Figure 6, the processing unit
    52 includes a memory 54 and a calculation unit 56. The memory 54 contains a secondary transfer function FT3 to be calibrated. The calculation unit 56 is capable of calibrating this secondary transfer function FT3 as a function of the audio content broadcast, the reference signal and the signal representative of the undesired acoustic field Ci. This calibration is carried out periodically with a predefined frequency. Finally, the calculation unit 56 is capable of generating a cancellation signal from said calibrated secondary transfer function.
    As a variant, the parameters selected by the calculation unit such as, for example, transfer functions are chosen as a function of information coming from a seat control system. This information is for example the position of the seat, the weight of the passenger, etc.
    As a variant, the deformable envelope is only mechanical.
    权利要求:
    Claims (12)
    [1" id="c-fr-0001]
    1Seat (2, 3) in particular for a passenger transport vehicle, said seat (2, 3) comprising a seat (8), a backrest (10) pivoting relative to the seat (8), a headrest (12 ) and an active noise control device (32) comprising:
    - at least one error sensor (36) capable of picking up a minimization acoustic field (Cm) and of generating a reference signal,
    - a reference sensor (38) capable of picking up an undesirable acoustic field (Ci),
    a processing unit (34) capable of generating a cancellation signal from the reference signal and from a signal representative of the undesirable acoustic field (Ci), and
    - at least one loudspeaker (40) capable of emitting a cancellation acoustic field from the cancellation signal, characterized in that the headrest (12) comprises a support (16) and a first deformable envelope (18) carried by the support and in that said at least one error sensor (36) is arranged on said first deformable envelope (18).
    [2" id="c-fr-0002]
    2, - Seat (2) according to claim 1, which comprises:
    a pump (24) capable of circulating a filling fluid (20) inside or outside the first deformable envelope (18) to expand or contract the first deformable envelope (18), and
    - A control unit (28) capable of controlling the deformation of the first deformable envelope (18) between the contracted form and the expanded form.
    [3" id="c-fr-0003]
    3.- Seat (2) according to claim 2, wherein the first deformable envelope (18) comprises a pressure sensor (22) capable of measuring the pressure of the filling fluid inside the first deformable envelope (18) , and in which the processing unit (34) comprises:
    a memory (42) storing at least two secondary transfer functions (FT1, FT2), each secondary transfer function (FT1, FT2) being characteristic of the acoustic modifications induced by at least torque comprising an error sensor (36) and a speaker (40), and
    a calculation unit (44) capable of selecting a secondary transfer function (FT1, FT2) in the memory (42) as a function of the pressure measured by the pressure sensor (22), said cancellation signal being generated at from said selected secondary transfer function.
    [4" id="c-fr-0004]
    4, - Seat (2) according to any one of claims 2 and 3, wherein the control unit (28) comprises a man-machine interface (30) adapted to be controlled by the passenger.
    [5" id="c-fr-0005]
    5. - Seat (2) according to any one of claims 2 to 4, wherein the first deformable envelope (18) further comprises a filling material (19); said filling material (19) being a material from a fibrous material, a granular material, a viscous material, a liquid material and a foam, polystyrene beads.
    [6" id="c-fr-0006]
    6. - Seat (2) according to any one of claims 2 to 5, which further comprises comfort balloons (46) arranged on said seat (2) and wherein said pump (24) is also able to circulate the filling fluid in or outside said comfort balloons (46).
    [7" id="c-fr-0007]
    7, - Seat (2) according to claim 1, in which the first deformable envelope (18) comprises:
    a piezoelectric material, at least one voltage source and electrical wires connecting the piezoelectric element to said at least one voltage source, and
    - A control unit (28) capable of controlling the deformation of the piezoelectric element, the control unit (28) comprising a man-machine interface (30) capable of being controlled by the passenger.
    [8" id="c-fr-0008]
    8. - Seat (3) according to claim 1, which comprises an additional deformable envelope (181), said additional deformable envelope (181) being movable relative to the first deformable envelope (18), said additional deformable envelope (181) comprising an additional error sensor (361) capable of transmitting an additional reference signal to the processing unit (34).
    [9" id="c-fr-0009]
    9. - Seat (3) according to claim 8, wherein said additional deformable envelope (181) comprises a connector (23) connected to said at least one additional error sensor (361) capable of generating an additional reference signal, and wherein the first deformable casing (18) comprises a complementary connector (25) connected to the processing unit (34), the connector (23) being adapted to be connected to the complementary connector (25) for transmitting the additional reference signal to the processing unit (34), the processing unit (34) being adapted to generate the cancellation signal from the additional reference signal.
    [10" id="c-fr-0010]
    10. - Seat (2, 3) according to any one of claims 1,2 and 4 to 9, wherein the at least one speaker (40) is capable of further broadcasting audio content from a device communication (50), and in which the processing unit (52) is capable of calibrating at least one secondary transfer function as a function of the audio content broadcast, the minimizing sound field and the undesirable sound field, said calibration being implemented periodically with a predefined frequency, said cancellation signal being generated from said calibrated secondary transfer function.
    [11" id="c-fr-0011]
    11.- Seat (2, 3) according to any one of claims 1,2 and 4 to 9, which comprises a backrest actuator (15) adapted to pivot the backrest (10) relative to the seat (8 ) and in which the control unit (28) includes a map associating with each backrest position relative to the seat a quantity of filling fluid contained in the first deformable casing (18) so that the control unit (28) is suitable for controlling the deformation of the first deformable casing (18) as a function of the position of the backrest (10) relative to the seat (8).
    [12" id="c-fr-0012]
    12, - Seat (2, 3) according to claim 11, which comprises at least two error sensors (36) arranged on the first deformable envelope (18) and in which the processing unit (34) comprises:
    - a memory (32) storing at least two secondary transfer functions; each secondary transfer function being characteristic of the acoustic modifications induced by at least torque comprising a sensor
    10 error (36) and one speaker (40), and
    - a calculation unit (44) capable of selecting a secondary transfer function in the memory (32) as a function of the relative position of the backrest (10) relative to the seat (8), the cancellation signal being generated from said selected secondary transfer function.
    1/4
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    同族专利:
    公开号 | 公开日
    DE102018107792A1|2018-10-04|
    GB2563132A|2018-12-05|
    US20180281965A1|2018-10-04|
    GB201805454D0|2018-05-16|
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    GB2563132B|2022-01-12|
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    法律状态:
    2018-02-26| PLFP| Fee payment|Year of fee payment: 2 |
    2018-10-05| PLSC| Publication of the preliminary search report|Effective date: 20181005 |
    2019-02-27| PLFP| Fee payment|Year of fee payment: 3 |
    2020-03-19| PLFP| Fee payment|Year of fee payment: 4 |
    2021-03-23| PLFP| Fee payment|Year of fee payment: 5 |
    2021-12-17| CD| Change of name or company name|Owner name: SAFRAN ELECTRONICS & DEFENSE ACTUATION, FR Effective date: 20211108 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1752921|2017-04-04|
    FR1752921A|FR3064557B1|2017-04-04|2017-04-04|SEAT ESPECIALLY FOR PASSENGER TRANSPORT VEHICLES|FR1752921A| FR3064557B1|2017-04-04|2017-04-04|SEAT ESPECIALLY FOR PASSENGER TRANSPORT VEHICLES|
    DE102018107792.0A| DE102018107792A1|2017-04-04|2018-04-03|Seat especially for passenger transport vehicle|
    GB1805454.4A| GB2563132B|2017-04-04|2018-04-03|Seat particularly for a passenger transport vehicle|
    US15/945,206| US10232945B2|2017-04-04|2018-04-04|Seat particularly for a passenger transport vehicle|
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