Automobile seat and intelligent control method of automobile seat

Abstract

The embodiment of the application discloses a kind of automobile seat and the intelligent control method of automobile seat, the automobile seat includes: backrest;Cushion;Pressure sensor, pressure sensor is set in backrest and cushion;Arc-shaped protective arm, two ends of arc-shaped protective arm are mechanically connected with backrest respectively, with the line of two ends of arc-shaped protective arm as rotation axis, arc-shaped protective arm can rotate around rotation axis;Arc-shaped protective arm can move along first direction, first direction is parallel to the plane where backrest is and perpendicular to the intersection line of the plane where backrest is and the plane where cushion is;Unit air bag is provided in cushion, and / or, arc-shaped protective arm is telescopic structure.The automobile seat is suitable for adult to ride, also suitable for children of different ages or body size to ride, the automobile seat can be adjusted deformation according to the safety and / or comfort of children, greatly convenient for the travel of rider.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and more particularly to an automotive seat and an intelligent control method for automotive seats. Background Technology

[0002] Currently, the seats that come with cars are standard adult seats, but children must be equipped with child seats when traveling. If you want to take a taxi or bus with a child, on the one hand, it is inconvenient to carry and install a child seat with you, and on the other hand, not having a child seat affects the safety of the child. If you want to take a child in a private car, as the child grows, you will need a child seat of different sizes, and you will need to replace it every two or three years, which is also an investment.

[0003] Existing child car seats are designed for children of different weights or ages to accommodate changes in body shape over a long period of growth. While they offer some degree of adjustability, they also have the following drawbacks:

[0004] 1. Currently, child seats on the market need to be installed separately in the car, taking up a lot of interior space. They are not connected to the car's infotainment system and cannot provide real-time feedback on the child's riding status. Some careless parents may even forget about their child sitting in the back seat when they get out of the car.

[0005] 2. If parents are traveling with their children in a taxi or ride-hailing service, it is inconvenient to carry a child seat with them, and installing a child seat also takes time. In addition, there is no guarantee that the child seat they bring will be compatible with the taxi or ride-hailing service they will be able to install.

[0006] 3. For vehicles that already have individual child seats installed, dealing with the child seats can be time-consuming and costly when the child grows up or needs to carry other adults. Summary of the Invention

[0007] This invention provides a car seat and an intelligent control method for the car seat, which is suitable for both adults and children of different ages or sizes, bringing convenience to passengers.

[0008] In a first aspect, embodiments of the present invention provide an automobile seat, comprising:

[0009] Backrest;

[0010] cushion;

[0011] A pressure sensor is disposed in the backrest and the seat cushion;

[0012] An arc-shaped protective arm, the two ends of which are mechanically connected to the backrest, and the arc-shaped protective arm can rotate around the line connecting the two ends of the arc-shaped protective arm as the axis of rotation; the arc-shaped protective arm can move along a first direction, the first direction being parallel to the plane of the backrest and perpendicular to the boundary line between the plane of the backrest and the plane of the seat cushion.

[0013] The seat cushion is equipped with a unit airbag, and / or the arc-shaped protective arm is a telescopic structure.

[0014] Optionally, the seat cushion includes armrests, and some of the unit airbags are disposed within the armrests.

[0015] Optionally, the arc-shaped protective arm integrates an air bag and a signal receiver, the air bag being configured to inflate when the signal receiver receives an accident signal.

[0016] Optionally, the surface of the backrest is provided with two sets of limiting rods, each set of limiting rods including two limiting rods, and the two ends of the arc-shaped protective arm are respectively limited between the two limiting rods of each set of limiting rods. The limiting rods extend along the first direction so that the arc-shaped protective arm can move along the first direction.

[0017] Optionally, the arc-shaped protective arm includes an arc-shaped support arm, two straight support arms, and two spherical adjusters, with the two ends of the arc-shaped support arm respectively fixedly connected to the two straight support arms;

[0018] The spherical adjuster has a rotating groove on its surface; the first end of the straight support arm is fitted into the rotating groove of the spherical adjuster, the rotating groove extends around the line connecting the first ends of the two straight support arms, and the first end of the straight support arm is the end connected to the spherical adjuster; the straight support arm rotates along the rotating groove.

[0019] The limiting rod surface is provided with a first helical thread; the spherical adjuster is provided with limiting grooves on the surfaces facing the two limiting rods respectively, and parallel threads are provided in the limiting grooves; the arc-shaped protective arm also includes a transmission gear, the transmission gear surface is provided with a second helical thread; the transmission gear is located between the limiting rod and the limiting groove, and meshes with the first helical thread on the limiting rod and the parallel thread in the limiting groove respectively through the second helical thread; the transmission gear rotates under the limitation of the first helical thread and the parallel thread and moves relative to the limiting rod in the first direction, so as to drive the spherical adjuster to move in the first direction.

[0020] Optionally, the straight arm includes two telescopic rods that are interlocked.

[0021] Optionally, a headrest is provided in the middle area of ​​the arc-shaped support arm.

[0022] Optionally, the car seat also includes a seat belt, and an auxiliary seat belt buckle is provided on the arc-shaped protective arm; one end of the seat belt is fixed to the side of the seat cushion, and the other end is used to insert into the auxiliary seat belt buckle when in use.

[0023] Secondly, embodiments of the present invention also provide an intelligent control method for an automobile seat, applied to the automobile seat described in any of the first aspects; the intelligent control method includes:

[0024] Determine whether the passenger is an adult or a child based on the position of the curved protective arm;

[0025] When the passenger is a child, pressure sensors are used to detect pressure information on the backrest and seat cushion.

[0026] The child's sitting posture is determined based on the pressure information on the backrest and the seat cushion;

[0027] Adjust the extension and retraction of the arc-shaped protective arm according to the child's sitting posture, and / or adjust the inflation and deflation of the unit airbags in the seat cushion.

[0028] Optionally, the seat cushion includes armrests, and some of the unit airbags are disposed within the armrests;

[0029] Adjusting the inflation and deflation of the unit airbags within the seat cushion includes:

[0030] Adjust the inflation and deflation of the unit airbags inside the armrest.

[0031] Optionally, the child's sitting posture is determined based on pressure information from the backrest and the seat cushion, including:

[0032] Based on the pressure information on the backrest and the seat cushion, a first pressure gradient map and a second pressure gradient map are drawn respectively; wherein, the first pressure gradient map includes a first central gradient region, and the second pressure gradient map includes a second central gradient region and a third central gradient region;

[0033] Among the multiple backrest partitions preset on the backrest, the backrest partition in which the first central gradient region is located is determined;

[0034] Among the multiple preset cushion sections on the cushion, the cushion sections where the second central gradient region and the third central gradient region are located are determined respectively.

[0035] The child's sitting posture is determined based on the backrest partition where the first central gradient region is located, and the seat cushion partitions where the second and third central gradient regions are located.

[0036] Optionally, the child's sitting posture is determined based on pressure information from the backrest and the seat cushion, including:

[0037] When pressure information is present on both the backrest and the seat cushion, the child's sitting posture is determined to be a sitting posture.

[0038] When there is pressure information on the seat cushion but no pressure information on the backrest, the child's sitting posture is determined to be either a reclining or forward-leaning posture.

[0039] Optionally, the child's sitting posture is determined based on pressure information from the backrest and the seat cushion, including:

[0040] Based on the pressure information on the seat cushion, a third pressure gradient map is drawn; wherein, the third pressure gradient map includes a fourth central gradient region and a fifth central gradient region;

[0041] Determine the distance between the peak point in the fourth central gradient region and the peak point in the fifth central gradient region;

[0042] When the distance meets the preset torso length range, the child's sitting posture is determined to be a lying position;

[0043] When the distance meets the preset ischial tuberosity distance range, the child's sitting posture is determined to be a sitting posture.

[0044] Optionally, the extension and retraction of the arc-shaped protective arm can be adjusted according to the child's sitting posture, and / or the inflation and deflation of the unit airbags within the seat cushion can be adjusted, including:

[0045] Adjust the extension and retraction of the arc-shaped protective arm, and calculate the static seat pressure distribution value on the backrest in real time based on the pressure information on the backrest until the static seat pressure distribution value on the backrest meets the preset static seat pressure distribution value range; and / or, adjust the inflation and deflation of the unit airbag in the seat cushion, and calculate the circular pressure gradient value on the seat cushion in real time based on the pressure information on the seat cushion until the circular pressure gradient value on the seat cushion meets the preset circular pressure gradient value range.

[0046] Optionally, determining the child's sitting posture based on pressure information from the backrest and the seat cushion further includes:

[0047] If the pressure information on the backrest and the seat cushion remains unchanged for a preset time, the child is determined to be in a sleeping state.

[0048] Optionally, after determining that the child is asleep, the method further includes:

[0049] Confirm that the car engine is running;

[0050] Send a signal to lower the speaker volume;

[0051] Displays the interior temperature and air conditioning fan speed.

[0052] Optionally, the arc-shaped protective arm integrates an air bag and a signal receiver;

[0053] The intelligent control method further includes:

[0054] The signal receiver is used to monitor whether an accident has occurred;

[0055] When the signal receiver receives an accident signal, it controls the air bag to inflate.

[0056] Optionally, after determining the child's sitting posture based on the pressure information on the backrest and the seat cushion, the method further includes:

[0057] Confirm that the car engine is stopped;

[0058] Send a warning signal indicating that a child is in the car.

[0059] This invention provides an automotive seat and an intelligent control method for the automotive seat. The automotive seat includes: a backrest; a seat cushion; a pressure sensor disposed in the backrest and the seat cushion; an arc-shaped protective arm, the two ends of which are mechanically connected to the backrest, and the arc-shaped protective arm can rotate around the line connecting the two ends of the arc-shaped protective arm as a rotation axis; the arc-shaped protective arm can move along a first direction, the first direction being parallel to the plane of the backrest and perpendicular to the boundary line between the plane of the backrest and the plane of the seat cushion; a unit airbag is disposed in the seat cushion, and / or the arc-shaped protective arm is a telescopic structure. This car seat features an arc-shaped protective arm mechanically connected to the backrest. This arc-shaped protective arm is rotatable and movable. When the arc-shaped protective arm is close to the backrest surface, the car seat is in the standard adult seat configuration, suitable for adults. When the arc-shaped protective arm rotates around the axis of rotation to one side of the seat cushion and moves along the first direction, the car seat is in the child seat configuration. That is, this car seat is suitable for both adults and children of different ages or sizes. This car seat can be adjusted and deformed according to the safety and / or comfort of children, bringing great convenience to passengers. Attached Figure Description

[0060] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0061] Figure 1 This is a structural schematic diagram of a car seat provided in an embodiment of the present invention;

[0062] Figure 2 This is a schematic diagram of another car seat structure provided in an embodiment of the present invention;

[0063] Figure 3 This is a schematic diagram of another type of car seat provided in an embodiment of the present invention;

[0064] Figure 4 This is a schematic diagram of another type of car seat provided in an embodiment of the present invention;

[0065] Figure 5 This is a schematic diagram of another type of car seat provided in an embodiment of the present invention;

[0066] Figure 6 yes Figure 1 An enlarged schematic diagram of the M region of the car seat shown;

[0067] Figure 7 yes Figure 2 An enlarged schematic diagram of the M region of the car seat shown;

[0068] Figure 8 yes Figure 3 An enlarged schematic diagram of the M region of the car seat shown;

[0069] Figure 9 This is a flowchart illustrating an intelligent control method for a car seat provided in an embodiment of the present invention;

[0070] Figure 10 This is a flowchart illustrating another intelligent control method for car seats provided in an embodiment of the present invention;

[0071] Figure 11 This is a schematic diagram of a first pressure gradient map and a second pressure gradient map provided in an embodiment of the present invention;

[0072] Figure 12 This is a schematic diagram of a backrest partition and seat cushion partition provided in an embodiment of the present invention;

[0073] Figure 13 This is a flowchart illustrating another intelligent control method for car seats provided in an embodiment of the present invention;

[0074] Figure 14 This is a flowchart illustrating another intelligent control method for car seats provided in an embodiment of the present invention;

[0075] Figure 15 This is a schematic diagram of a third pressure gradient map provided in an embodiment of the present invention;

[0076] Figure 16 This is a flowchart illustrating another intelligent control method for car seats provided in an embodiment of the present invention;

[0077] Figure 17 This is a flowchart illustrating another intelligent control method for car seats provided in an embodiment of the present invention;

[0078] Figure 18 This is a flowchart illustrating another intelligent control method for car seats provided in an embodiment of the present invention. Detailed Implementation

[0079] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0080] The terminology used in the embodiments of this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. It should be noted that directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this invention are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this invention. Furthermore, in the context, it should be understood that when referring to an element being formed "on" or "below" another element, it can be formed not only directly on or below the other element, but also indirectly on or below it through intermediate elements. The terms "first," "second," etc., are used for descriptive purposes only and do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0081] The term "comprising" and its variations as used in this invention are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment".

[0082] It should be noted that the concepts of "first" and "second" mentioned in this invention are only used to distinguish the corresponding contents and are not used to limit the order or interdependence.

[0083] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0084] Figure 1 This is a structural schematic diagram of a car seat provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of another car seat structure provided in an embodiment of the present invention. Figure 3 This is a structural schematic diagram of another type of car seat provided in an embodiment of the present invention, such as... Figure 1 , Figure 2 and Figure 3 As shown, the car seat includes: a backrest 10; a seat cushion 20; and a pressure sensor ( Figure 1 , Figure 2 and Figure 3 (Not shown in the image), pressure sensors are installed in the backrest 10 and the seat cushion 20; an arc-shaped protective arm 30, with both ends of the arc-shaped protective arm 30 mechanically connected to the backrest 10, and the arc-shaped protective arm 30 can rotate around the axis of rotation A with the line connecting the two ends of the arc-shaped protective arm 30 as the axis of rotation A; the arc-shaped protective arm 30 can move along the first direction X, the first direction X being parallel to the plane of the backrest 10 and perpendicular to the boundary line B of the plane of the backrest 10 and the plane of the seat cushion 20; a unit airbag 21 is provided inside the seat cushion 20, and / or the arc-shaped protective arm 30 is a telescopic structure.

[0085] Specifically, please refer to Figure 1 , Figure 2 and Figure 3 The car seat includes a backrest 10, a seat cushion 20, a pressure sensor, and an arc-shaped protective arm 30. The pressure sensor is located in the backrest 10 and the seat cushion 20, and can detect pressure information on the backrest 10 and the seat cushion 20 in real time. For example, the pressure sensor can be a thin-film pressure sensor, located under the surface covering material of the backrest 10 and the seat cushion 20. The car seat includes a standard adult seat configuration and a child seat configuration. The conversion between these two configurations mainly depends on the position of the arc-shaped protective arm 30. Both ends of the arc-shaped protective arm 30 are mechanically connected to the backrest 10. On the one hand, the arc-shaped protective arm 30 can rotate around the axis of rotation A, with the line connecting its two ends as the axis of rotation A. When the arc-shaped protective arm 30 is in close contact with the surface of the backrest 10… Figure 1 The car seat shown is a standard adult seat, suitable for adults. When the arc-shaped protective arm 30 rotates around the rotation axis A toward the seat cushion 20, Figure 2The car seat shown is a child seat, suitable for children of a certain age or size. The two ends of the arc-shaped protective arm 30 are mechanically connected to the backrest 10. Furthermore, the arc-shaped protective arm 30 can move along a first direction X, which is parallel to the plane of the backrest 10 and perpendicular to the boundary line B between the plane of the backrest 10 and the plane of the seat cushion 20. Figure 3 The car seat shown is a child seat, suitable for children of different ages or sizes. The position of the arc-shaped protective arm 30 along the first direction X can be adjusted according to the child's age or size, providing a certain degree of restraint and protection for the child. In other words, this car seat is suitable for both adults and children of different ages and sizes, meeting the seating needs of children at different stages of growth and weight.

[0086] Furthermore, the seat cushion 20 is equipped with a unit airbag 21, and / or the arc-shaped protective arm 30 is a telescopic structure. This car seat can adjust the inflation and deflation of the unit airbag 21 within the seat cushion 20 according to the child's riding posture to improve the child's comfort, and / or adjust the telescopic extension and retraction of the arc-shaped protective arm 30 to ensure the child's safety.

[0087] The technical solution in this embodiment of the invention includes a car seat comprising: a backrest; a seat cushion; a pressure sensor disposed in the backrest and the seat cushion; an arc-shaped protective arm, the two ends of which are mechanically connected to the backrest, and the arc-shaped protective arm can rotate around the axis of rotation connecting the two ends of the arc-shaped protective arm; the arc-shaped protective arm can move along a first direction, the first direction being parallel to the plane of the backrest and perpendicular to the boundary line between the plane of the backrest and the plane of the seat cushion; a unit airbag is disposed in the seat cushion, and / or the arc-shaped protective arm is a telescopic structure. This car seat features an arc-shaped protective arm mechanically connected to the backrest. This arc-shaped protective arm is rotatable and movable. When the arc-shaped protective arm is close to the backrest surface, the car seat is in the standard adult seat configuration, suitable for adults. When the arc-shaped protective arm rotates around the axis of rotation to one side of the seat cushion and moves along the first direction, the car seat is in the child seat configuration. That is, this car seat is suitable for both adults and children of different ages or sizes. This car seat can be adjusted and deformed according to the safety and / or comfort of children, bringing great convenience to passengers.

[0088] Optionally, Figure 4 This is a structural schematic diagram of another type of car seat provided in an embodiment of the present invention, such as... Figure 4 As shown, the seat cushion 20 includes armrests 22, and some unit airbags 21 are disposed within the armrests 22.

[0089] Specifically, the seat cushion 20 includes armrests 22, which can be located on both sides of the seat cushion 20 or only on one side. Partially, unit airbags 21 are housed within the armrests 22. This car seat can adjust the inflation and deflation of the unit airbags 21 within the armrests 22 according to the child's seating posture, thereby changing the coverage of the armrests 22 and improving the child's comfort. For example, if the child is in a reclining position, positioned between the curved protective arm 30 and the seat cushion 20, the curved protective arm 30 ensures the child's safety and restricts their range of motion. Adjusting the inflation of the unit airbags 21 within the armrests 22 provides head support, further enhancing the child's comfort.

[0090] Optionally, Figure 5 This is a structural schematic diagram of another type of car seat provided in an embodiment of the present invention, such as... Figure 5 As shown, the arc-shaped protective arm 30 integrates an air bag 31 and a signal receiver. Figure 5 (Not shown in the image), the air bag 31 is configured to inflate when the signal receiver receives an accident signal.

[0091] Specifically, the car seat also includes a child safety seat mode, which is activated only when a child is in the seat and an accident occurs. The arc-shaped protective arm 30 integrates an airbag 31 and a signal receiver. The location of the signal receiver is not limited; it can be located on the surface of the airbag 31, or on the surface or inside the arc-shaped protective arm 30. The car's infotainment system typically includes an acceleration sensor, which sends an accident signal. The signal receiver on the arc-shaped protective arm 30 receives this signal. Upon receiving the accident signal, the airbag 31 on the arc-shaped protective arm 30 immediately inflates. The arc-shaped protective arm 30 enhances the child's restraint protection, maximizing the restriction of the child's range of motion and ensuring the child's safety, reducing the severity of injuries in car accidents, and preventing secondary collision injuries. Furthermore, the arc-shaped protective arm 30 also integrates an exhaust valve. After an accident, the exhaust valve can be manually adjusted to quickly release air and free the child from the car seat.

[0092] Optionally, Figure 6 yes Figure 1 The diagram shown is an enlarged view of the M area of ​​the car seat. Figure 7 yes Figure 2 The diagram shown is an enlarged view of the M area of ​​the car seat. Figure 8 yes Figure 3 The enlarged diagram of the M area of ​​the car seat shown is for further reference. Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 The surface of the backrest 10 is provided with two sets of limiting rods 11. Each set of limiting rods 11 includes two limiting rods 11. The two ends of the arc-shaped protective arm 30 are respectively limited between the two limiting rods 11 of each set of limiting rods 11. The limiting rods 11 extend along the first direction X so that the arc-shaped protective arm 30 can move along the first direction X.

[0093] Specifically, the surface of the backrest 10 is provided with two sets of limiting rods 11, each set of limiting rods 11 including two limiting rods 11, and each end of the arc-shaped protective arm 30 corresponds to a set of limiting rods 11. The two ends of the arc-shaped protective arm 30 are respectively limited between the two limiting rods 11 of each set of limiting rods 11, and the limiting rods 11 extend along the first direction X, so that the arc-shaped protective arm 30 can move along the first direction X.

[0094] Optionally, continue to refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 The arc-shaped protective arm 30 includes an arc-shaped support arm 32, two straight support arms 33, and two spherical adjusters 34. The two ends of the arc-shaped support arm 32 are fixedly connected to the two straight support arms 33 respectively. A rotating groove 341 is provided on the surface of the spherical adjuster 34. The first end of the straight support arm 33 is fitted into the rotating groove 341 of the spherical adjuster 34. The rotating groove 341 extends around the line connecting the first ends of the two straight support arms 33, and the first end of the straight support arm 33 is the end connected to the spherical adjuster 34. The straight support arm 33 rotates along the rotating groove 341. A first helical thread is provided on the surface of the limiting rod 11. Figure 6 , Figure 7 and Figure 8 (Not shown in the image); the spherical adjuster 34 has limit grooves 342 on the surfaces facing the two limit rods 11, and parallel threads are provided in the limit grooves 342. Figure 6 , Figure 7 and Figure 8 (Not shown in the image); the arc-shaped protective arm 30 also includes a transmission gear 35, the surface of which is provided with a second helical thread (not shown in the image); Figure 6 , Figure 7 and Figure 8 (Not shown in the image); the transmission gear 35 is located between the limiting rod 11 and the limiting groove 342, and meshes with the first helical thread on the limiting rod 11 and the parallel thread in the limiting groove 342 respectively through the second helical thread; the transmission gear 35 rotates under the limitation of the first helical thread and the parallel thread and moves relative to the limiting rod 11 in the first direction X, so as to drive the ball adjuster 34 to move in the first direction X.

[0095] Specifically, the arc-shaped protective arm 30 includes an arc-shaped support arm 32, two straight support arms 33, and two spherical adjusters 34. The two straight support arms 33 are respectively connected to the two spherical adjusters 34. The end of the straight support arm 33 connected to the spherical adjuster 34 is the first end; that is, for each straight support arm 33 of the arc-shaped protective arm 30, it corresponds to one spherical adjuster 34, and each spherical adjuster 34 corresponds to a set of limit rods 11 / two limit rods 11. The surface of the spherical adjuster 34 is provided with a rotating groove 341, which extends around the line connecting the first ends of the two straight support arms 33. The first ends of the straight support arms 33 are fitted into the rotating groove 341 of the spherical adjuster 34, allowing the straight support arms 33 to rotate along the rotating groove 341, so that the arc-shaped protective arm 30 rotates around the rotation axis A. Figure 6 and Figure 7 The arc-shaped protective arm 30 shown achieves rotation around the rotation axis A. The arc-shaped protective arm 30 also includes a transmission gear 35. For a straight support arm 33 of the arc-shaped protective arm 30, it is positioned between two limit rods 11 in each set of limit rods 11. Each limit rod 11 corresponds to one transmission gear 35, which is located between the limit rod 11 and the limit groove 342. The spherical adjuster 34 has limit grooves 342 on its surface facing the two limit rods 11, and parallel threads are provided within the limit grooves 342. Figure 6 , Figure 7 and Figure 8 (as shown in the image); the surface of the limiting rod 11 is provided with a first helical thread (as shown in the image). Figure 6 , Figure 7 and Figure 8 (Not shown in the image); the surface of the transmission gear 35 is provided with a second helical thread (not shown in the image); Figure 6 , Figure 7 and Figure 8 (Not shown in the image). The transmission gear 35 is located between the limiting rod 11 and the limiting groove 342. The transmission gear 35 can mesh with the first helical thread on the limiting rod 11 and the parallel thread in the limiting groove 342 through the second helical thread. Since the first helical thread and the second helical thread correspond and mesh, relative movement can occur between the first helical thread and the second helical thread. However, the second helical thread and the parallel thread do not correspond, and no relative movement occurs between the second helical thread and the parallel thread. The transmission gear 35 and the ball adjuster 34 can be regarded as a fixed integral structure. The transmission gear 35 rotates under the limitation of the first helical thread and the parallel thread and moves relative to the limiting rod 11 in the first direction X, so as to drive the ball adjuster 34 to move in the first direction X, so as to move the arc-shaped protective arm 30 in the first direction X. Figure 7 and Figure 8 The arc-shaped protective arm 30 shown realizes movement along the first direction X.

[0096] Further reference Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 The straight support arm 33 includes two telescopic rods that are interlocked.

[0097] Specifically, the straight arm 33 includes two interlocking telescopic rods. This structure meets the seating needs of children at different growth stages and weights, and can provide a certain restraining effect for children. At the same time, the two interlocking telescopic rods can also save space and improve the space utilization rate of car seats.

[0098] Further, continue to refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 A headrest is provided in the middle area of ​​the arc-shaped support arm 32.

[0099] Specifically, a headrest can be provided in the middle area of ​​the arc-shaped support arm 32. When the car seat is in the form of a standard adult seat, the headrest can provide head and neck protection for adults. When the car seat is in the form of a child seat, the headrest can provide waist and abdomen protection for children, increasing the protection area.

[0100] Optionally, continue to refer to Figure 2 The car seat also includes a seat belt 40, and an auxiliary seat belt socket 36 is provided on the arc-shaped protective arm 30; one end of the seat belt 40 is fixed to the side of the seat cushion 20, and the other end is used to insert into the auxiliary seat belt socket 36 when in use.

[0101] Specifically, the car seat also includes a seat belt 40, and an auxiliary seat belt socket 36 is provided on the arc-shaped protective arm 30. For example, the auxiliary seat belt socket 36 can be located on one side of the arc-shaped support arm 32. One end of the seat belt 40 is fixed to the side of the seat cushion 20, and the other end is used to insert into the auxiliary seat belt socket 36 when in use. The seat belt 40 can provide further restraint for children, maximizing the safety of children while riding.

[0102] Figure 9 This is a flowchart illustrating an intelligent control method for a car seat according to an embodiment of the present invention. This intelligent control method for a car seat can be applied to any of the car seats provided in the above embodiments, and can control the car seat. Figure 9 As shown, the intelligent control method includes:

[0103] S110. Determine whether the passenger is an adult or a child based on the position of the arc-shaped protective arm.

[0104] Specifically, please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 The car seat shown is a standard adult seat, suitable for adults. Figure 2 The car seat shown is a child seat, suitable for children of a certain age or size. Figure 3 The car seat shown is a child seat, suitable for children of a certain age or size. When the curved protective arm 30 is flush against the backrest 10, the occupant is identified as an adult. When the curved protective arm 30 rotates around the axis of rotation A towards the seat cushion 20, and the plane of the curved protective arm 30 is parallel to the plane of the seat cushion 20, the occupant is identified as a child. Furthermore, if the curved protective arm 30 rotates around the axis of rotation A towards the seat cushion 20, but the plane of the curved protective arm 30 is not parallel to the plane of the seat cushion 20, the car seat can issue an alarm to remind relevant personnel / parents that the curved protective arm 30 has not rotated to its proper position, thus preventing any impact on the child's safety or comfort.

[0105] S120. When the passenger is a child, pressure sensors are used to detect pressure information on the backrest and seat cushion.

[0106] Specifically, please refer to Figure 1 , Figure 2 and Figure 3 Pressure sensors are installed in the backrest 10 and the seat cushion 20. When the occupant is a child, the pressure sensors can be used to detect pressure information on the backrest 10 and the seat cushion 20 respectively. For example, this pressure information can be the pressure value at various locations on the backrest 10 and the seat cushion 20, as well as a pressure gradient map (or a human body pressure distribution model, which is an elastic contact model) corresponding to the pressure values ​​on the backrest 10 and the seat cushion 20. For example, each location on the backrest 10 and the seat cushion 20 can be considered as a node, and the formula for calculating the contact pressure per unit node i is: Among them, A i Let σ be the cell area at unit node i. e The elastic contact stress is determined by the given stress penetration thickness, λ. i λ is the contact surface thickness of a unit node i. i ′ Let t be the derivative of the contact surface thickness at unit node i. i C is the variable contact surface thickness per unit node i. d σ is a constant damping coefficient. d f is the damping stress function. dDamping amplification factor. Furthermore, when the occupant is an adult, the car seat functions like a standard adult seat; it does not activate pressure sensors to detect pressure information on the backrest 10 and seat cushion 20, nor does it perform subsequent steps.

[0107] S130. Determine the child's riding posture based on pressure information from the backrest and seat cushion.

[0108] Specifically, please refer to Figure 1 , Figure 2 and Figure 3 After the pressure sensors detect the pressure information on the backrest 10 and the seat cushion 20 respectively, the pressure information can be analyzed and processed to identify the child's activity intentions and thus determine the child's sitting posture.

[0109] S140. Adjust the extension and retraction of the curved protective arm according to the child's riding posture, and / or adjust the inflation and deflation of the unit airbag in the seat cushion.

[0110] Specifically, please refer to Figure 1 , Figure 2 and Figure 3 After determining the child's seating posture, the extension and retraction of the curved protective arm 30, and / or the inflation and deflation of the unit airbag 21 within the seat cushion 20, can be adjusted according to the child's posture. It should be noted that children's activity patterns differ from adults during car rides, and their activity frequency is also higher. To improve the comfort of children while riding, the car seat can be partially adjusted according to the child's seating posture. For example, when a child is drowsy or asleep, the curved protective arm 30 can be shortened, and / or the unit airbag 21 within the seat cushion 20 can be inflated or deflated to reduce the child's movement space and better secure the child's body; when a child is eating or drinking, the curved protective arm 30 can be extended, and / or the unit airbag 21 within the seat cushion 20 can be inflated or deflated to increase upper limb movement space.

[0111] The technical solution in this embodiment of the invention first determines whether the passenger is an adult or a child based on the position of the arc-shaped protective arm. Then, when the passenger is a child, pressure sensors detect pressure information on the backrest and seat cushion. Next, based on this pressure information, the child's seating posture is determined. Finally, based on the child's posture, the extension and retraction of the arc-shaped protective arm is adjusted, and / or the inflation and deflation of the unit airbags within the seat cushion are adjusted. Using this method, the car seat is suitable for both adults and children of different ages and sizes. When the passenger is a child, the car seat is partially adjusted according to the child's posture, effectively improving the safety and comfort of the child and greatly facilitating travel.

[0112] Optionally, continue to refer to Figure 4 The seat cushion 20 includes an armrest 22, and some unit airbags 21 are disposed in the armrest 22; adjusting the inflation and deflation of the unit airbags 21 in the seat cushion 20 includes: adjusting the inflation and deflation of the unit airbags 21 in the armrest 22.

[0113] Specifically, the seat cushion 20 includes armrests 22, which can be located on both sides of the seat cushion 20 or only on one side of the seat cushion 20. Some unit airbags 21 are located inside the armrests 22. The car seat can adjust the inflation and deflation of the unit airbags 21 inside the armrests 22 according to the child's sitting posture, thereby changing the coverage of the armrests 22 to improve the child's sitting comfort.

[0114] Figure 10 This is a flowchart illustrating another intelligent control method for a car seat provided by an embodiment of the present invention. This embodiment is an optimization based on the above embodiment. Optionally, determining the child's sitting posture based on pressure information on the backrest and seat cushion includes:

[0115] Based on the pressure information on the backrest and seat cushion, a first pressure gradient map and a second pressure gradient map are drawn respectively; wherein, the first pressure gradient map includes a first central gradient region, and the second pressure gradient map includes a second central gradient region and a third central gradient region;

[0116] Among the multiple preset backrest zones on the backrest, determine the backrest zone where the first central gradient region is located;

[0117] Among the multiple preset cushion sections on the cushion, determine the cushion sections where the second central gradient region and the third central gradient region are located respectively;

[0118] The child's riding posture is determined based on the backrest zone where the first central gradient zone is located, and the seat cushion zones where the second and third central gradient zones are located.

[0119] For details not covered in this embodiment, please refer to the above embodiments. Figure 10 As shown, the intelligent control method includes:

[0120] S210. Determine whether the passenger is an adult or a child based on the position of the arc-shaped protective arm.

[0121] S220: When the passenger is a child, pressure sensors are used to detect pressure information on the backrest and seat cushion.

[0122] S230. Based on the pressure information on the backrest and seat cushion, draw a first pressure gradient map and a second pressure gradient map respectively; wherein, the first pressure gradient map includes a first central gradient region, and the second pressure gradient map includes a second central gradient region and a third central gradient region.

[0123] Specifically, Figure 11 This is a schematic diagram of a first pressure gradient map and a second pressure gradient map provided in an embodiment of the present invention. (Continue referring to...) Figure 1 , Figure 2 , Figure 3 and Figure 11 Based on the pressure information on the backrest 10, an A / D conversion algorithm is used to convert the pressure information on the backrest 10. This information is then analyzed and processed using specialized computer software to create a first pressure gradient map 50. The first pressure gradient map 50 reflects the characteristic indicators of the pressure distribution on the backrest 10. It is a planar isobaric map and includes a first central gradient region 51, which corresponds to the contact position between the child's head or neck and the backrest 10. Similarly, based on the pressure information on the seat cushion 20, an A / D conversion algorithm is used to convert the pressure information on the seat cushion 20. This information is then analyzed and processed using specialized computer software to create a second pressure gradient map 60. The second pressure gradient map 60 reflects the characteristic indicators of the pressure distribution on the seat cushion 20. It is also a planar isobaric map and includes a second central gradient region 61 and a third central gradient region 62, which correspond to the contact positions between the child's buttocks or legs and the seat cushion 20. Understandably, the first pressure gradient map 50 and the second pressure gradient map 60, as visual graphical representations, help to analyze the correspondence between pressure distribution and the child's sitting posture.

[0124] S240. Among the multiple backrest zones preset on the backrest, determine the backrest zone where the first central gradient region is located.

[0125] in, Figure 12 This is a schematic diagram of a backrest partition and seat cushion partition provided in an embodiment of the present invention. (Continue referring to...) Figure 1 , Figure 2 , Figure 3 , Figure 11 and Figure 12The backrest 10 includes multiple preset backrest zones, such as a head movement zone 12 (the outer curve of the head movement zone 12 is the head and neck line), a lumbar and back movement zone 13 (the outer curve of the lumbar and back movement zone 13 is the lumbar and back line), a first edge zone 14, and a second edge zone 15. The backrest 10 also includes a preset first longitudinal interruption line 16, which serves as the boundary line to distinguish the left (zone one) and right (zone two) of the backrest 10. Specifically, among the multiple preset backrest zones on the backrest 10, the backrest zone where the first central gradient region 51 is located is determined. For example, children may unconsciously sway while riding, and cars may also experience bumps while driving. Taking a child's normal sitting posture as an example, when a child sits on the seat cushion 20 and leans against the backrest 10, the first central gradient region 51 in the first pressure gradient map 50 on the backrest 10 is located in the head movement zone 12.

[0126] S250. Among the multiple preset seat cushion zones on the seat cushion, determine the seat cushion zones where the second central gradient zone and the third central gradient zone are located respectively.

[0127] Among them, continue to refer to Figure 1 , Figure 2 , Figure 3 , Figure 11 and Figure 12 The seat cushion 20 includes multiple preset seat cushion zones, such as a hip movement zone 23, a leg movement zone 24, and a third edge zone 25. The seat cushion 20 also includes a preset second longitudinal interruption line 26, which serves as the boundary line to distinguish the left (zone three) and right (zone four) areas of the seat cushion 20. Specifically, among the multiple preset seat cushion zones on the seat cushion 20, the seat cushion zones where the second central gradient region 61 and the third central gradient region 62 are located are determined. For example, children may unconsciously sway while riding, and the car will also experience bumps during travel. Taking a child's normal sitting posture as an example, when a child sits on the seat cushion 20 and leans against the backrest 10, both the second central gradient region 61 and the third central gradient region 62 in the second pressure gradient map 60 on the seat cushion 20 are located in the hip movement zone 23.

[0128] S260. Determine the child's riding posture based on the backrest zone where the first central gradient zone is located and the seat cushion zones where the second and third central gradient zones are located.

[0129] Specifically, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 11 and Figure 12Based on the backrest partition where the first central gradient region 51 is located, and the seat cushion partitions where the second central gradient region 61 and the third central gradient region 62 are located, the child's riding posture can be determined. For example, if the backrest partition where the first central gradient region 51 is located is the first edge zone 14 and is located in the left zone of the backrest 10, and the seat cushion partitions where the second central gradient region 61 and the third central gradient region 62 are located are the hip movement zone 23 and are located in the left zone of the seat cushion 20, then the child's riding posture is a left-leaning posture. Further, based on the movement / change of the first central gradient region 51 from one backrest partition to another, and / or based on the movement / change of the second central gradient region 61 from one seat cushion partition to another, and / or based on the movement / change of the third central gradient region 62 from one seat cushion partition to another, it can be determined that the child's riding posture has changed. For example, the child's riding posture changes from a left-leaning posture to a right-leaning posture.

[0130] S270, Adjust the extension and retraction of the curved protective arm according to the child's riding posture, and / or adjust the inflation and deflation of the unit airbag in the seat cushion.

[0131] The technical solution in this embodiment of the invention details how to determine a child's sitting posture based on pressure information from the backrest and seat cushion. A first pressure gradient map and a second pressure gradient map are drawn based on the pressure information from the backrest and seat cushion, respectively. The child's sitting posture is determined based on the backrest section where the first central gradient region is located, and the seat cushion sections where the second and third central gradient regions are located. Using the above method, the backrest and seat cushion are divided into regions, and the child's sitting posture can be determined based on the positions of the first, second, and third central gradient regions.

[0132] Figure 13 This is a flowchart illustrating another intelligent control method for a car seat provided by an embodiment of the present invention. This embodiment is an optimization based on the above embodiment. Optionally, determining the child's sitting posture based on pressure information on the backrest and seat cushion includes:

[0133] When pressure information is present on both the backrest and the seat cushion, the child's sitting posture is determined to be a sitting posture.

[0134] If there is pressure information on the seat cushion but not on the backrest, the child's sitting posture is determined to be either reclining or leaning forward.

[0135] For details not covered in this embodiment, please refer to the above embodiments. Figure 13 As shown, the intelligent control method includes:

[0136] S310. Determine whether the passenger is an adult or a child based on the position of the arc-shaped protective arm.

[0137] S320: When the passenger is a child, pressure sensors are used to detect pressure information on the backrest and seat cushion.

[0138] S330. When pressure information is present on both the backrest and the seat cushion, the child's sitting posture is determined to be a sitting posture.

[0139] Specifically, please refer to Figure 11 and Figure 12 After the pressure sensor detects the pressure information on the backrest 10 and the seat cushion 20, if there is obvious pressure information on both the backrest 10 and the seat cushion 20, it can be determined that the child's sitting posture is a sitting posture. The child sits on the seat cushion 20 and leans against the backrest 10. For example, the child's sitting posture can be a sitting posture with the body leaning to the left or a sitting posture with the body leaning to the right.

[0140] S340. When there is pressure information on the seat cushion but no pressure information on the backrest, determine that the child's sitting posture is a reclining or forward-leaning posture.

[0141] Specifically, please refer to Figure 11 and Figure 12 After the pressure sensor detects the pressure information on the backrest 10 and the seat cushion 20, if there is obvious pressure information on the seat cushion 20 and no obvious pressure information on the backrest 10, the child's head or back is not in contact with the backrest 10, and it can be determined that the child's sitting posture is a reclining or forward-leaning posture.

[0142] S350: Adjust the extension and retraction of the curved protective arm according to the child's riding posture, and / or adjust the inflation and deflation of the unit airbags in the seat cushion.

[0143] The technical solution in this embodiment of the invention details how to determine a child's sitting posture based on pressure information from the backrest and seat cushion. When pressure information is present on both the backrest and seat cushion, the child's sitting posture is determined to be a sitting posture; when pressure information is present on the seat cushion but not on the backrest, the child's sitting posture is determined to be a reclining or forward-leaning posture. Using this method, the presence or absence of significant pressure information on the backrest and / or seat cushion provides a simple approach to determining a child's sitting posture.

[0144] In one specific embodiment, optionally, determining the child's sitting posture based on pressure information on the backrest and seat cushion further includes: determining that the child is asleep when the pressure information on the backrest and seat cushion remains unchanged for a preset time. Further, after determining that the child is asleep, the method further includes: determining that the car engine is running; issuing a signal to lower the horn volume; and displaying the interior temperature and air conditioning fan speed.

[0145] The preset time is based on the average time it takes for a child to fall asleep; for example, the preset time could be 15 minutes. For more details, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 3 , Figure 11 and Figure 12 After the pressure sensor detects the pressure information on the backrest 10 and the seat cushion 20, if the pressure information on the backrest 10 and the seat cushion 20 remains unchanged for a preset time, the child is determined to be in a sleeping state. For example, it can be understood that if the pressure values ​​at various positions on the backrest 10 and the seat cushion 20, as well as the pressure gradient map corresponding to the pressure values ​​on the backrest 10 and the seat cushion 20, remain unchanged or only slightly change within a duration of 15 minutes, the child can be determined to be in a sleeping state. This sleeping state can be either a sitting sleeping state or a lying sleeping state. Furthermore, once the car seat determines that the child is asleep, the position of the arc-shaped protective arm 30 remains fixed to prevent the arc-shaped protective arm 30 from shifting due to the child's unconscious movements, which could lead to abnormal limiting or affect the child's safety. It can also interact with the vehicle's infotainment system to determine whether the car engine is running, i.e., whether the driver is driving. If the driver is driving, the car seat can remind the driver through the infotainment system by lowering the horn volume and displaying the interior temperature and air conditioning fan speed, providing the child with a relatively quiet and comfortable sleeping environment.

[0146] In another specific embodiment, optionally, after determining the child's riding posture based on the pressure information on the backrest and seat cushion, the method further includes: determining that the car engine is stopped; and issuing a warning signal that the child is inside the vehicle.

[0147] Specifically, please refer to Figure 11 and Figure 12 Once the car seat determines the child's seating position, it can interact with the vehicle's infotainment system to determine whether the car engine is running, i.e., whether the driver is driving. If the driver is not driving, the car seat can alert the driver through the infotainment system that the child is in the car, thus preventing the driver from leaving the child in the vehicle.

[0148] Figure 14 This is a flowchart illustrating another intelligent control method for a car seat provided by an embodiment of the present invention. This embodiment is an optimization based on the above embodiment. Optionally, determining the child's sitting posture based on pressure information on the backrest and seat cushion includes:

[0149] Based on the pressure information on the seat cushion, a third pressure gradient map is drawn; the third pressure gradient map includes a fourth central gradient region and a fifth central gradient region;

[0150] Determine the distance between the peak points in the fourth central gradient region and the peak points in the fifth central gradient region;

[0151] When the distance meets the preset torso length range, the child's sitting posture is determined to be a lying position;

[0152] When the distance meets the preset ischial tuberosity distance range, the child's sitting posture is determined to be a sitting posture.

[0153] For details not covered in this embodiment, please refer to the above embodiments. Figure 14 As shown, the intelligent control method includes:

[0154] S410. Determine whether the passenger is an adult or a child based on the position of the arc-shaped protective arm.

[0155] S420: When the passenger is a child, pressure sensors are used to detect pressure information on the backrest and seat cushion.

[0156] S430. Based on the pressure information on the seat cushion, draw a third pressure gradient map; wherein, the third pressure gradient map includes a fourth central gradient region and a fifth central gradient region.

[0157] Specifically, Figure 15 This is a schematic diagram of a third pressure gradient map provided in an embodiment of the present invention. (Continue referring to...) Figure 1 , Figure 2 , Figure 3 and Figure 15 Based on the pressure information on the seat cushion 20, the pressure information on the seat cushion 20 is converted by an A / D conversion algorithm and analyzed by computer software to draw a third pressure gradient map 70. The third pressure gradient map 70 can reflect the characteristic indicators of the pressure distribution on the seat cushion 20. The third pressure gradient map 70 is a planar isobaric map. The third pressure gradient map 70 includes a fourth central gradient region 71 and a fifth central gradient region 72. The fourth central gradient region 71 and the fifth central gradient region 72 correspond to the contact positions between the child's buttocks or legs and the seat cushion 20.

[0158] S440. Determine the distance between the peak points in the fourth central gradient region and the peak points in the fifth central gradient region.

[0159] Specifically, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 15The third pressure gradient map 70 is a planar isobaric map. The fourth central gradient region 71 is the region where multiple nodes with large pressure values ​​are located. The peak point in the fourth central gradient region 71 is the node with the largest pressure value in the fourth central gradient region 71 (which corresponds to a coordinate point). The fifth central gradient region 72 is also the region where multiple nodes with large pressure values ​​are located. The peak point in the fifth central gradient region 72 is the node with the largest pressure value in the fifth central gradient region 72 (which corresponds to a coordinate point). The distance between the peak points in the fourth central gradient region 71 and the fifth central gradient region 72 can be determined by distance calculation.

[0160] S450. When the distance meets the preset torso length range, determine the child's sitting posture as a lying position.

[0161] The preset torso length range is determined based on the child's age or body size, and for example, it can be 20cm-50cm. For more details, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 15 The distance between the peak point in the fourth central gradient region 71 and the peak point in the fifth central gradient region 72 can be determined by distance calculation. When the distance meets the preset torso length range, the child's sitting posture can be determined to be a lying position.

[0162] S460. When the distance meets the preset ischial tuberosity distance range, determine the child's sitting posture as a sitting posture.

[0163] The preset ischial tuberosity distance range is determined based on the child's age or body size. For example, the preset ischial tuberosity distance can be 10cm-30cm. For more details, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 15 The distance between the peak point in the fourth central gradient region 71 and the peak point in the fifth central gradient region 72 can be determined by distance calculation. When the distance meets the preset ischial tuberosity distance range, the child's sitting posture can be determined to be a sitting posture.

[0164] S470, Adjust the extension and retraction of the curved protective arm according to the child's riding posture, and / or adjust the inflation and deflation of the unit airbag in the seat cushion.

[0165] The technical solution in this embodiment of the invention details how to determine a child's sitting posture based on pressure information from the backrest and seat cushion. Specifically, it involves drawing a third pressure gradient map based on the pressure information from the seat cushion; determining the distance between the peak points in the fourth and fifth central gradient regions; determining the child's sitting posture as a reclining position when the distance meets a preset torso length range; and determining the child's sitting posture as a sitting position when the distance meets a preset ischial tuberosity distance range. By using this method, and comparing the distance between the peak points in the fourth and fifth central gradient regions with a preset range, the child's sitting posture is initially determined, providing a simple approach to determining a child's sitting posture.

[0166] Figure 16 This is a flowchart illustrating another intelligent control method for a car seat provided by an embodiment of the present invention. This embodiment is an optimization based on the above embodiment. Optionally, the extension and retraction of the arc-shaped protective arm is adjusted according to the child's sitting posture, and / or the inflation and deflation of the unit airbag in the seat cushion is adjusted, including:

[0167] Adjust the extension and retraction of the arc-shaped protective arm, and calculate the static seat pressure distribution value on the backrest in real time based on the pressure information on the backrest until the static seat pressure distribution value on the backrest meets the preset static seat pressure distribution value range; and / or, adjust the inflation and deflation of the unit airbag in the seat cushion, and calculate the circular pressure gradient value on the seat cushion in real time based on the pressure information on the seat cushion until the circular pressure gradient value on the seat cushion meets the preset circular pressure gradient value range.

[0168] For details not covered in this embodiment, please refer to the above embodiments. Figure 16 As shown, the intelligent control method includes:

[0169] S510. Determine whether the passenger is an adult or a child based on the position of the arc-shaped protective arm.

[0170] S520: When the passenger is a child, pressure sensors are used to detect pressure information on the backrest and seat cushion.

[0171] S530: Determine the child's riding posture based on pressure information from the backrest and seat cushion.

[0172] S540, adjust the extension and retraction of the arc-shaped protective arm, and calculate the static seat pressure distribution value on the backrest in real time based on the pressure information on the backrest until the static seat pressure distribution value on the backrest meets the preset static seat pressure distribution value range; and / or, adjust the inflation and deflation of the unit airbag in the seat cushion, and calculate the circular pressure gradient value on the seat cushion in real time based on the pressure information on the seat cushion until the circular pressure gradient value on the seat cushion meets the preset circular pressure gradient value range.

[0173] Among them, continue to refer to Figure 1 , Figure 2 and Figure 3 The preset static seat pressure distribution range determines the rate of pressure change on the backrest 10. This range reflects the uniformity of pressure distribution on the backrest 10. The shape of the backrest 10 provides appropriate support to key parts of the human body and avoids unnecessary pressure on certain areas. For example, the static seat pressure distribution value can be... Among them, P i Let P be the contact pressure at the i-th node, and n be the total number of nodes corresponding to non-zero contact pressure values ​​on the backrest 10. av The average pressure value is a non-zero contact pressure. The preset circular pressure gradient range determines the rate of pressure change on the cushion 20, or the rate of pressure change at the ischial tuberosities of a child. The preset circular pressure gradient range can reflect the changes in pressure distribution on the cushion 20. The main weight of the human body is concentrated at the ischial tuberosities. For example, the circular pressure gradient value can be... Among them, P max n is the maximum pressure value among non-zero contact pressures. jThis refers to the total number of nodes corresponding to non-zero contact pressure values ​​on the seat cushion 20. Specifically, after determining the child's sitting posture, the extension and retraction of the arc-shaped protective arm 30 can be adjusted according to the child's sitting posture, and the static seat pressure distribution value on the backrest 10 can be calculated in real time based on the pressure information on the backrest 10 until the static seat pressure distribution value on the backrest 10 meets the preset static seat pressure distribution value range. At this time, the pressure information distribution on the backrest 10 is relatively uniform, effectively improving the safety of child restraint; and / or, the inflation and deflation of the unit airbag 21 in the seat cushion 20 can be adjusted, and the circular pressure gradient value on the seat cushion 20 can be calculated in real time based on the pressure information on the seat cushion 20 until the circular pressure gradient value on the seat cushion 20 meets the preset circular pressure gradient value range. At this time, the pressure information distribution on the seat cushion 20 is relatively uniform, effectively improving the comfort of the child's seating. For example, when a child changes from a standard sitting posture to a left-leaning posture, the extension of the curved protective arm 30 is adjusted, and the static seat pressure distribution value on the backrest 10 is calculated in real time based on the pressure information on the backrest 10 until the static seat pressure distribution value on the backrest 10 meets the preset static seat pressure distribution value range, at which point the extension of the curved protective arm 30 stops. When a child changes from a left-leaning posture to a right-leaning posture, the shortening of the curved protective arm 30 is adjusted, and the static seat pressure distribution value on the backrest 10 is calculated in real time based on the pressure information on the backrest 10 until the static seat pressure distribution value on the backrest 10 meets the preset static seat pressure distribution value range, at which point the shortening of the curved protective arm 30 stops. When the child's sitting posture is a reclining posture, the inflation and deflation of the unit airbags 21 in the seat cushion 20 and the unit airbags 21 in the armrest 22 are adjusted to improve the pressure distribution of the child's head, buttocks, and legs, so that the pressure value in the prominent pressure distribution peak area decreases, ensuring the uniformity of the pressure distribution on the seat cushion 20, and effectively improving the comfort of the child's seating.

[0174] The technical solution in this embodiment of the invention details how to adjust the extension and retraction of the arc-shaped protective arm according to the child's sitting posture, and / or adjust the inflation and deflation of the unit airbags in the seat cushion, adjust the extension and retraction of the arc-shaped protective arm, and calculate the static seat pressure distribution value on the backrest in real time based on the pressure information on the backrest until the static seat pressure distribution value on the backrest meets the preset static seat pressure distribution value range; and / or adjust the inflation and deflation of the unit airbags in the seat cushion, and calculate the circular pressure gradient value on the seat cushion in real time based on the pressure information on the seat cushion until the circular pressure gradient value on the seat cushion meets the preset circular pressure gradient value range. Using the above method, the preset static seat pressure distribution value range and the preset circular pressure gradient value range are used as adjustment standards for the uniformity of pressure distribution on the backrest and seat cushion, respectively, so that the car seat can be adjusted and deformed according to the child's safety and / or comfort, bringing great convenience to the passenger's travel.

[0175] Figure 17This is a flowchart illustrating another intelligent control method for a car seat provided by an embodiment of the present invention. This embodiment is an optimization based on the above embodiment. Optionally, the arc-shaped protective arm integrates an air bag and a signal receiver;

[0176] Intelligent control methods also include:

[0177] Use signal receivers to monitor for accidents;

[0178] When the signal receiver receives a signal that an accident has occurred, it controls the inflation of the airbag.

[0179] For details not covered in this embodiment, please refer to the above embodiments. Figure 17 As shown, the intelligent control method includes:

[0180] S610. Determine whether the passenger is an adult or a child based on the position of the arc-shaped protective arm.

[0181] S620: When the passenger is a child, pressure sensors are used to detect pressure information on the backrest and seat cushion.

[0182] S630: Determine the child's riding posture based on pressure information from the backrest and seat cushion.

[0183] S640, Adjust the extension and retraction of the curved protective arm according to the child's riding posture, and / or adjust the inflation and deflation of the unit airbag in the seat cushion.

[0184] S650 uses a signal receiver to monitor for accidents.

[0185] Specifically, please refer to Figure 5 The arc-shaped protective arm 30 integrates an airbag 31 and a signal receiver. The position of the signal receiver is not limited; it can be located on the surface of the airbag 31, or on the surface or inside the arc-shaped protective arm 30. The vehicle's infotainment system typically includes an acceleration sensor, which can emit an accident signal when an accident occurs. The signal receiver on the arc-shaped protective arm 30 can receive this accident signal.

[0186] S660: When the signal receiver receives an accident signal, it controls the airbag to inflate.

[0187] Specifically, please refer to Figure 5 The airbag 31 on the arc-shaped protective arm 30 inflates immediately after the signal receiver receives an accident signal. The arc-shaped protective arm 30 can enhance the restraint protection for children, thereby limiting their range of movement to the greatest extent and ensuring their safety while riding, reducing the severity of injuries to children in accidents such as car crashes, and preventing secondary collision injuries.

[0188] It should be noted that S610-S640 correspond to the adult standard seat mode and child seat mode of this car seat, while S650-S660 correspond to the child safety seat mode. The child safety seat mode is only triggered when a child is riding in the car and an accident occurs. The order of S610-S640 and S650-S660 is not limited; S610-S640 or S650-S660 can occur first. In the child seat mode, S610-S640 and S650-S660 can occur simultaneously.

[0189] The technical solution in this embodiment of the invention details that the car seat also includes a safety seat configuration. The safety seat configuration is activated only when a child is riding in the car and an accident occurs. The airbag 31 on the arc-shaped protective arm 30 inflates immediately after the signal receiver receives the accident signal. The arc-shaped protective arm 30 can enhance the restraint protection of the child, thereby maximally restricting the child's range of motion and ensuring the child's safety while riding in the car, reducing the degree of injury to the child in accidents such as car crashes, and preventing secondary collision injuries to the child.

[0190] Figure 18 This is a flowchart illustrating another intelligent control method for car seats provided in an embodiment of the present invention, as shown below. Figure 18 As shown, this car seat includes adult standard seat mode, child seat mode, and child safety seat mode. The position of the curved protective arm can determine whether the passenger is an adult or a child. When the car seat is in child seat mode, pressure sensors detect pressure information on the backrest and seat cushion, determining the child's posture based on this information. When a significant change occurs in the pressure information on the backrest and / or seat cushion, indicating a change in the child's posture, the extension / retraction command of the curved protective arm controls the motor to ensure the child's safety. Simultaneously, the inflation / deflation command of the unit airbag within the seat cushion controls the air pump to improve the child's comfort. Furthermore, if there is no significant change in the pressure information on the backrest and / or seat cushion for a preset time, it indicates that the child has entered a sleep state. In this case, the position of the curved protective arm is fixed, limiting the child's movement. This car seat can also interact with the vehicle's infotainment system, which can be linked to the dashboard display to prompt the driver to lower the horn volume and display the interior temperature and air conditioning fan speed. The signal receiver on the curved protective arm can receive accident signals. Upon receiving the signal, the airbag on the curved protective arm immediately inflates, and the arm remains in a fixed position to prevent secondary injuries to the child. Furthermore, when the car engine is off and the car seat detects a child in the vehicle, it can interact with the vehicle's infotainment system to alert the driver that a child is inside, preventing children from being left behind.

[0191] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An automobile seat characterized by comprising: The automobile seat comprises: a backrest; a seat cushion; a pressure sensor arranged in the backrest and the seat cushion; an arc-shaped protection arm, two ends of the arc-shaped protection arm are respectively mechanically connected with the backrest, a line connecting the two ends of the arc-shaped protection arm is a rotation axis, the arc-shaped protection arm can rotate around the rotation axis, the arc-shaped protection arm can move in a first direction, the first direction is parallel to a plane where the backrest is located and perpendicular to an intersection line between the plane where the backrest is located and a plane where the seat cushion is located; a surface of the backrest is provided with two groups of limiting rods, each group of the limiting rods comprises two limiting rods, two ends of the arc-shaped protection arm are respectively limited between the two limiting rods of each group of the limiting rods, the limiting rods extend in the first direction, so that the arc-shaped protection arm moves in the first direction; the arc-shaped protection arm comprises an arc-shaped supporting arm, two straight supporting arms and two spherical adjusters, two ends of the arc-shaped supporting arm are respectively fixedly connected with the two straight supporting arms; a surface of the spherical adjuster is provided with a rotation groove, a first end of the straight supporting arm is embedded in the rotation groove of the spherical adjuster, the rotation groove extends around a line connecting the first ends of the two straight supporting arms, the first end of the straight supporting arm is an end connected with the spherical adjuster, the straight supporting arm rotates along the rotation groove; a surface of the limiting rod is provided with a first helical thread, a surface of each of the two limiting rods is respectively provided with a limiting groove, the limiting groove is provided with a parallel thread, the arc-shaped protection arm further comprises a transmission gear, a surface of the transmission gear is provided with a second helical thread, the transmission gear is located between the limiting rod and the limiting groove, and the second helical thread is respectively engaged with the first helical thread on the limiting rod and the parallel thread in the limiting groove, the transmission gear rotates under the limitation of the first helical thread and the parallel thread and moves in the first direction relative to the limiting rod, so as to drive the spherical adjuster to move in the first direction; the seat cushion is provided with a unit air bag, and / or the arc-shaped protection arm is a telescopic structure.

2. The automobile seat according to claim 1, characterized by the seat cushion comprises an armrest, and part of the unit air bag is arranged in the armrest.

3. The automobile seat according to claim 1, characterized by the arc-shaped protection arm is integrated with an air bag and a signal receiver, the air bag is configured to inflate and expand when the signal receiver receives an accident signal.

4. The automobile seat according to claim 1, characterized by the straight supporting arm comprises two telescopic rods which are sleeved with each other.

5. The automobile seat according to claim 1, characterized by a headrest is arranged in a middle region of the arc-shaped supporting arm.

6. The automobile seat according to claim 1, wherein the automobile seat further comprises a safety belt, an auxiliary safety belt socket is arranged on the arc-shaped protection arm, one end of the safety belt is fixed to a side edge of the seat cushion, and the other end is used for being inserted into the auxiliary safety belt socket in use.

7. An intelligent control method of an automobile seat, characterized by, application to the automobile seat in any one of claims 1-6; the intelligent control method comprises: determining whether a passenger is an adult or a child according to a position of an arc-shaped protection arm; when the passenger is a child, detecting pressure information on a backrest and a seat cushion by using a pressure sensor; determining a sitting posture of the child according to the pressure information on the backrest and the seat cushion; adjusting the extension and retraction of the arc-shaped protection arm according to the sitting posture of the child, and / or adjusting the inflation and deflation of the unit air bags in the seat cushion.

8. The intelligent control method of an automobile seat according to claim 7, characterized by, The seat cushion comprises an armrest, and part of the unit air bags are arranged in the armrest. The adjusting the inflation and deflation of the unit air bags in the seat cushion comprises: adjusting the inflation and deflation of the unit air bags in the armrest.

9. The intelligent control method of an automobile seat according to claim 7, characterized by, The determining the sitting posture of the child according to the pressure information on the backrest and the seat cushion comprises: drawing a first pressure gradient map and a second pressure gradient map according to the pressure information on the backrest and the seat cushion respectively; wherein the first pressure gradient map comprises a first central gradient area, and the second pressure gradient map comprises a second central gradient area and a third central gradient area. determining the backrest partition where the first central gradient area is located among a plurality of backrest partitions pre-set on the backrest; determining the seat cushion partitions where the second central gradient area and the third central gradient area are located respectively among a plurality of seat cushion partitions pre-set on the seat cushion; determining the sitting posture of the child according to the backrest partition where the first central gradient area is located and the seat cushion partitions where the second central gradient area and the third central gradient area are located respectively.

10. The intelligent control method of an automobile seat according to claim 7, wherein The determining the sitting posture of the child according to the pressure information on the backrest and the seat cushion comprises: when there is pressure information on both the backrest and the seat cushion, determining that the sitting posture of the child is a sitting posture; when there is pressure information on the seat cushion and no pressure information on the backrest, determining that the sitting posture of the child is a lying posture or a forward-leaning posture.

11. The intelligent control method of an automobile seat according to claim 7, wherein The determining the sitting posture of the child according to the pressure information on the backrest and the seat cushion comprises: drawing a third pressure gradient map according to the pressure information on the seat cushion; wherein the third pressure gradient map comprises a fourth central gradient area and a fifth central gradient area; determining the distance between the peak point in the fourth central gradient area and the peak point in the fifth central gradient area; when the distance satisfies a pre-set trunk length range, determining that the sitting posture of the child is a lying posture; when the distance satisfies a pre-set ischial tuberosity distance range, determining that the sitting posture of the child is a sitting posture.

12. The intelligent control method of an automobile seat according to claim 7, wherein The adjusting the extension and retraction of the arc-shaped protection arm according to the sitting posture of the child, and / or adjusting the inflation and deflation of the unit air bags in the seat cushion comprises: adjusting the extension and retraction of the arc-shaped protection arm, and calculating a static seat pressure distribution value on the backrest in real time according to the pressure information on the backrest until the static seat pressure distribution value on the backrest satisfies a pre-set static seat pressure distribution value range; and / or adjusting the inflation and deflation of the unit air bags in the seat cushion, and calculating a circular pressure gradient value on the seat cushion in real time according to the pressure information on the seat cushion until the circular pressure gradient value on the seat cushion satisfies a pre-set circular pressure gradient value range.

13. The intelligent control method of an automobile seat according to claim 10, wherein The determining the sitting posture of the child according to the pressure information on the backrest and the seat cushion further comprises: when there is no change in the pressure information on the backrest and the seat cushion for a pre-set time, determining that the child is in a sleep state.

14. The intelligent control method of an automobile seat according to claim 13, wherein After determining that the child is in a sleep state, the method further comprises: Determine that the engine of the automobile is in operation; Send a signal to reduce the volume of the horn; Display the temperature in the car and the air volume of the air conditioner in the car.

15. The intelligent control method of an automobile seat according to claim 7, wherein The arc-shaped protective arm is integrated with an air bag and a signal receiver; The intelligent control method further comprises: Monitoring whether an accident occurs by using the signal receiver; When the signal receiver receives an accident signal, controlling the air bag to inflate.

16. The intelligent control method of an automobile seat according to claim 7, wherein After determining the sitting posture of the child according to the pressure information on the backrest and the cushion, the method further comprises: Determine that the engine of the automobile is in a stop operation state; Send a signal to remind that a child is in the car.

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