Occupant information sensing method, occupant information sensing device, and vehicle

Abstract

The application provides a passenger information sensing method, a passenger information sensing device and a vehicle. The passenger information sensing method is applied to a passenger information sensing device on a vehicle. The passenger information sensing device comprises a distance sensor. The passenger information sensing method comprises the following steps: after a target passenger is seated on a seat, controlling the distance sensor to scan at least the target passenger, and determining passenger information of the target passenger according to a corresponding distance detected by the distance sensor during the scanning process. The passenger information comprises at least one of a limb size, a weight and a body fat of the target passenger. The passenger information sensing method provided by the application can obtain the passenger information of the target passenger without setting a camera, does not obtain human private information, has higher privacy, and is beneficial to the wide use of in-vehicle information sensing technology.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle control, in particular to a passenger information sensing method, a passenger information sensing device and a vehicle. BACKGROUND

[0002] The body weight information of a human body is directly related to the thermal comfort of the human body, and the degree of fatness directly affects the thermal comfort of the automobile air conditioner. The relative surface area of a fat person is small, and the relative surface area of a thin person is larger. Therefore, the same weight but different body fat information also directly affects the thermal comfort of the human body.

[0003] At present, an RBG camera or a depth camera and other in-vehicle sensing devices are often used to shoot the body condition information of a human body in a vehicle. However, the RBG camera or the depth camera can obtain the RBG, infrared picture, body behavior, face, iris, gender and age and other private information of a human body. Therefore, the existing in-vehicle sensing devices can be limited in use due to privacy issues. As a result, the automobile air conditioning system cannot sense the body weight and body fat information of the passengers in the vehicle, and thus cannot realize the intelligent temperature adjustment function. SUMMARY

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a passenger information sensing method, a passenger information sensing device and a vehicle.

[0005] To achieve the above-mentioned purpose, a first aspect of the present application provides a passenger information sensing method applied to a passenger information sensing device on a vehicle, wherein the passenger information sensing device comprises a distance sensor, and the passenger information sensing method comprises the following steps:

[0006] After a target passenger is seated on a seat, the distance sensor is controlled to scan at least the target passenger, and passenger information of the target passenger is determined according to a corresponding distance detected by the distance sensor during the scanning process. The passenger information includes at least one of the limb size, body weight and body fat of the target passenger.

[0007] The passenger information sensing method provided by the present application scans at least the target passenger through the distance sensor, and determines the passenger information of the target passenger according to the corresponding distance detected by the distance sensor during the scanning process. The passenger information sensing method does not obtain the RBG, depth, infrared picture, body behavior, face, iris, gender and age and other private information of a human body, has higher privacy, and is conducive to the widespread use of in-vehicle information sensing technology.

[0008] A second aspect of the present application further provides a passenger information sensing device applied to a vehicle, wherein the passenger information sensing device comprises:

[0009] A distance sensor is installed in front of a seat in a vehicle.

[0010] A control module is electrically connected to the distance sensor, and is configured to execute the occupant information sensing method of the first aspect.

[0011] The third aspect of the present application further provides a vehicle comprising:

[0012] a seat; and

[0013] the occupant information sensing device of the second aspect.

[0014] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0016] Figure 2 is a flowchart of an occupant information sensing method provided by an embodiment of the present application;

[0017] Figure 3 is Figure 1 a schematic diagram of the occupant information sensing device in the vehicle 100 when performing vertical scanning;

[0018] Figure 4 is Figure 1 a schematic diagram of the occupant information sensing device in the vehicle 100 when performing horizontal scanning on the leg area of the occupant;

[0019] Figure 5 is Figure 1 a schematic diagram of the occupant information sensing device in the vehicle 100 when performing horizontal scanning on the abdominal area of the occupant;

[0020] Figure 6 is Figure 1 a schematic diagram of the occupant information sensing device in the vehicle 100 when performing horizontal scanning on the chest and shoulder area of the occupant. The following is a description of the reference signs:

[0021] vehicle 100

[0022] target occupant 1

[0023] floor 2

[0024] first rear seat 7

[0025] main driver seat 8

[0026] hidden cover 9

[0027] occupant information sensing device 10

[0028] Distance sensor 11

[0029] Temperature sensor 12

[0030] Vertical Rotation Servo 13

[0031] Lateral Rotation Servo 14

[0032] Seat Cushion 71

[0033] Cushion 72

[0034] Legs 101

[0035] Abdomen 102

[0036] Side 711

[0037] Distance from L1 and L5

[0038] Lower leg length L2

[0039] Thigh length L3

[0040] Maximum thickness between the abdomen and back (L4)

[0041] Shoulder width L6

[0042] Preset floor reference point A

[0043] Knee apex B

[0044] Abdominal apex C

[0045] Head vertex D

[0046] Seat cushion edge reference point E

[0047] Leg reference point F

[0048] Cushion Reference Point G

[0049] Left shoulder endpoint H

[0050] Right shoulder end point I

[0051] First lateral angle range α1

[0052] Second lateral angle range α2

[0053] Third lateral angle range α3

[0054] First vertical angle range β1

[0055] The third vertical angle range β3

[0056] Fourth vertical angle range β4

[0057] a fifth vertical angle range β5

[0058] The following detailed description will illustrate the present application with reference to the above mentioned drawings. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application.

[0060] In addition, the terms "first", "second", and the like in the specification of the present application are used to distinguish similar objects, and do not necessarily indicate a particular order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0061] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0062] Please refer to Figures 1-2 , Figure 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application, Figure 2 is a flowchart of a passenger information sensing method provided by an embodiment of the present application, the present application provides a passenger information sensing method applied to a passenger information sensing device 10 on a vehicle 100, the passenger information sensing device 10 is installed in front of a seat on the vehicle, and the passenger information sensing device 10 includes a distance sensor 11.

[0063] The number of seats on the vehicle 100 can be multiple, for example, a 5-seat vehicle, the vehicle 100 can include front-row seats and rear-row seats, the front-row seats can include a main driver seat 8 and a co-driver seat (not shown in the figure), the rear-row seats can include a first rear-row seat 7 behind the main driver seat, a second rear-row seat (not shown in the figure) behind the co-driver seat, and a third rear-row seat (not shown in the figure) between the first rear-row seat and the second rear-row seat. The vehicle 100 can be provided with one passenger information sensing device 10 for at least one seat.

[0064] In some embodiments, each seat in the vehicle 100 can be configured with the occupant information sensing device 10. Each occupant information sensing device 10 is installed in front of the corresponding seat (i.e. the occupant information sensing device 10 is located on the plane where the center line of the seat cushion of the corresponding seat is located) and above the seat cushion of the corresponding seat in the vertical direction. For example, the occupant information sensing device 10 corresponding to the driver seat 8 and the occupant information sensing device 10 corresponding to the front passenger seat can be arranged on the console, the occupant information sensing device 10 corresponding to the first rear seat 7 can be arranged on the back side of the seat cushion of the driver seat 8 (as shown in Figure 1 Fig. 1), the occupant information sensing device 10 corresponding to the second rear seat can be arranged on the back side of the seat cushion of the front passenger seat, and the occupant information sensing device 10 corresponding to the third rear seat can be arranged at the position of the rearview mirror inside the vehicle.

[0065] The occupant information sensing device 10 includes a distance sensor 11.

[0066] As shown in Figure 2 Fig. 1, the occupant information sensing method includes the following steps:

[0067] Step S1, after the target occupant 1 sits on the seat, the distance sensor 11 is controlled to at least scan the target occupant 1, and the occupant information of the target occupant 1 is determined according to the corresponding distance detected by the distance sensor 11 during the scanning process.

[0068] The occupant information includes at least one of the limb size, weight, and body fat of the target occupant 1.

[0069] The occupant information sensing method provided by the present application scans the target occupant 1 at least by the distance sensor 11, and determines the occupant information of the target occupant 1 according to the corresponding distance detected by the distance sensor 11 during the scanning process, without obtaining private information such as human RBG, depth, infrared picture, human behavior, face, iris, gender, and age, which has higher privacy and is conducive to the widespread use of in-vehicle information perception technology.

[0070] In some embodiments, the occupant information includes the weight and / or body fat of the target occupant 1. After the distance sensor 11 is controlled to at least scan the target occupant 1, and the occupant information of the target occupant 1 is determined according to the corresponding distance detected by the distance sensor 11 during the scanning process, the occupant information sensing method further includes:

[0071] Adjusting the temperature of the vehicle air conditioner according to at least the weight and / or body fat of the target occupant 1.

[0072] Thus, based on the body weight and / or body fat of the target passenger 1 determined by the passenger information sensing device 10, the intelligent temperature adjustment function can be realized.

[0073] In some embodiments, the limb size includes a calf length L2, the distance sensor 11 is controlled to scan at least towards the target passenger, and the passenger information of the target passenger 1 is determined according to the corresponding distances detected by the distance sensor 11 during the scanning process, including:

[0074] The distance sensor 11 is controlled to scan at different scanning angles towards the preset knee area of the target passenger 1, and the calf length L2 of the target passenger 1 is determined according to the distances corresponding to each scanning angle detected by the distance sensor 11 during the scanning process.

[0075] It can be understood that when the target passenger 1 sits on the seat, although the position of the knee of the target passenger 1 will be different with the height of the target passenger 1, it will always fall within the preset knee area. Therefore, by controlling the distance sensor 11 to scan at different scanning angles towards the preset knee area of the target passenger 1, the position of the knee of the target passenger 1 can be determined according to the distances corresponding to each scanning angle detected by the distance sensor 11 during the scanning process, and then the calf length L2 of the target passenger 1 can be determined according to the position of the knee of the target passenger 1. The preset knee area can be determined according to the statistical results of the knee positions of passengers of different heights when they sit on the seat.

[0076] In some embodiments, the distance sensor 11 is a single-line radar. As shown in Figure 1 In some embodiments, the passenger information sensing device 10 further includes a vertical rotating rudder 13 and a horizontal rotating rudder 14, the vertical rotating rudder 13 is used to rotate in the vertical direction to drive the single-line radar to vertically scan in the vertical direction, and the horizontal rotating rudder 14 is used to rotate in the horizontal direction to drive the single-line radar to horizontally scan in the horizontal direction. In other embodiments, the single-line radar itself can scan within a scanning angle range of 270°, therefore, the passenger information sensing device 10 can only be provided with one of the vertical rotating rudder 13 and the horizontal rotating rudder 14.

[0077] The distance sensor 11 is controlled to scan at different scanning angles towards the preset knee area of the target passenger, and the calf length L2 of the target passenger 1 is determined according to the distances corresponding to each scanning angle detected by the distance sensor 11 during the scanning process, including:

[0078] control the distance sensor 11 to scan the preset knee area of the target passenger 1 at different scanning angles, and determine the point with the shortest distance in the distances corresponding to each scanning angle detected by the distance sensor 11 during scanning as the knee vertex B of the target passenger 1; and

[0079] determine the distance between the knee vertex B and a preset floor reference point A in the vertical direction as the calf length of the target passenger 1.

[0080] Further, the control of the distance sensor 11 to scan the preset knee area of the target passenger 1 at different scanning angles, and the determination of the point with the shortest distance in the distances corresponding to each scanning angle detected by the distance sensor 11 during scanning as the knee vertex B of the target passenger 1, comprises:

[0081] control the distance sensor 11 to vertically scan the area within at least a first vertical angle range β1 corresponding to the cushion edge area; wherein when the area within the first vertical angle range β1 is vertically scanned, the lateral scanning angle of the distance sensor 11 remains a lateral initial angle, which is the lateral scanning angle when the scanning direction of the distance sensor 11 directly faces the center of the cushion of the seat;

[0082] determine the point with the shortest distance in the distances corresponding to each scanning angle detected by the distance sensor 11 during the vertical scanning of the area within at least the first vertical angle range β1 corresponding to the cushion edge area as the cushion edge reference point E of the seat;

[0083] control the distance sensor 11 to laterally scan the area within at least a first lateral angle range α1 corresponding to the leg area with the cushion edge reference point E as the reference point; wherein when the area within the first lateral angle range α1 is laterally scanned, the vertical scanning angle of the distance sensor 11 remains the vertical scanning angle corresponding to the cushion edge reference point E of the seat;

[0084] determine the point with the shortest distance in the distances corresponding to each scanning angle detected by the distance sensor 11 during the lateral scanning of the area within at least the first lateral angle range α1 corresponding to the leg area as the leg reference point F of the target passenger 1;

[0085] The distance sensor 11 is controlled to perform vertical scanning on the area in the second vertical angle range corresponding to at least the knee region with the leg reference point F as the reference point; wherein, when the area in the second vertical angle range is vertically scanned, the lateral scanning angle of the distance sensor 11 remains the lateral scanning angle corresponding to the leg reference point F; and,

[0086] The point corresponding to the shortest distance in the distance detected by the distance sensor 11 in the process of vertically scanning the area in the second vertical angle range corresponding to at least the knee region is determined as the knee vertex B of the target occupant 1.

[0087] Exemplarily, please refer to Figure 1 , Figure 3 and Figure 4 , Figure 3 is a schematic view of the occupant information sensing device in Figure 1 when performing vertical scanning, Figure 4 is a schematic view of the occupant information sensing device in Figure 1 when performing lateral scanning on the leg region of the occupant, and the following will take the seat as the first rear seat 7 in Figure 1 as an example to introduce in detail the method for determining the calf length L2 of the target occupant 1.

[0088] As shown in Figure 1 and Figure 3 , the target occupant 1 is seated on the first rear seat 7 in Figure 1 , that is, the first rear seat 7 is the seat, and the occupant information sensing device 10 installed on the back side of the cushion of the main driver seat 8 is the occupant information sensing device 10 corresponding to the seat.

[0089] Wherein, the seat cushion edge reference point E is the midpoint on the edge 711 of the seat cushion 71 away from the cushion 72 of the seat. It should be noted that since the target occupant 1 is seated on the seat, the legs of the target occupant 1 are usually placed on both sides of the seat cushion edge reference point E, and when the distance sensor 11 performs vertical scanning on the area in the first vertical angle range β1, the lateral scanning angle of the distance sensor 11 remains the lateral initial angle, therefore, the object scanned by the distance sensor 11 when performing vertical scanning on the area in the first vertical angle range β1 is the seat cushion 71, rather than the legs of the target occupant 1. In addition, since Figure 3The occupant information sensing device 10 shown is installed on the back of the cushion of the driver's seat 8. When the driver adjusts the driver's seat 8, causing a change in the position and angle of the cushion, the height of the occupant information sensing device 10 will change accordingly. Consequently, the distance and vertical angle between the occupant information sensing device 10 and the reference point E at the edge of the seat cushion will change. However, since the adjustable angle and adjustable position range of the cushion of the driver's seat 8 are limited when the driver sits on it, the vertical angle of the distance sensor 11 when scanning the reference point E at the edge of the seat cushion will be within a first vertical angle range β1. Therefore, by controlling the distance sensor 11 to perform vertical scanning in the area at least corresponding to the edge area of ​​the seat cushion within the first vertical angle range β1, the distance corresponding to each scanning angle detected by the distance sensor 11 during the vertical scanning process within the area of ​​the first vertical angle range β1 can be used to determine the reference point E at the edge of the seat cushion.

[0090] like Figure 3 As shown, when the distance sensor 11 performs a vertical scan in a clockwise direction within the area of ​​the first vertical angle range β1, the distance detected by the distance sensor 11 first decreases until it reaches a minimum value when scanning to the reference point E at the edge of the seat cushion, and then begins to increase. Therefore, the point with the shortest distance detected by the distance sensor 11 during the vertical scan within the area of ​​the first vertical angle range β1 is the reference point E at the edge of the seat cushion. The first vertical angle range β1 can be determined based on the statistical results of the vertical angles when the distance sensor 11 scans the reference point E at the edge of the seat cushion under different angles and positions adjusted by the driver of the driver's seat 8.

[0091] Furthermore, since the target occupant 1's legs will be within the first lateral angle range α1 when the target occupant 1 sits on the seat, by controlling the distance sensor 11 to perform a lateral scan within the area at least corresponding to the leg region, using the seat cushion edge reference point E as a reference point, the leg reference point F of the target occupant 1's legs 101 can be determined based on the distances corresponding to the scanning angles detected by the distance sensor 11 during the lateral scan within the first lateral angle range α1. For example... Figure 4As shown, the shortest distance point detected by the distance sensor 11 in the process of transversely scanning the area within the first transverse angle range a1 is the leg reference point F of the target occupant 1. The first vertical angle range b1 can be determined according to the statistical result of the vertical angle of the distance sensor 11 when scanning the seat cushion edge reference point E under the condition that the driver adjusts the cushion of the main driver seat 8 to be at different angles and positions.

[0092] Further, after determining the leg reference point F of the leg 101 of the target occupant 1, since the shank lengths of occupants of different heights are different, the leg reference point F is usually not the knee vertex B of the target occupant 1. Therefore, by controlling the distance sensor 11 to vertically scan the area within the second vertical angle range corresponding to the knee region with the leg reference point F as the reference point, the knee vertex B of the target occupant 1 can be determined. The second vertical angle range can be determined according to the statistical result of the position of the knee vertex B of occupants of different heights when they are seated on the seat. In some embodiments, the second vertical angle range can be the same as the first vertical angle range.

[0093] Further, in the embodiments of the present application, after determining the knee vertex B of the target occupant 1, the shank length L2 of the target occupant 1 can be determined by establishing a coordinate system, as follows:

[0094] First, a three-dimensional coordinate system is established with the installation position of the distance sensor 11 as the origin, as shown in Figure 1 The Z-axis direction of the three-dimensional coordinate system is the vertical direction, the Y-axis direction is perpendicular to the Z-axis and points to the center line of the seat cushion 71 of the seat, and the X-axis is perpendicular to the Y-axis and the Z-axis. It should be noted that other position points can also be used as the origin when establishing the three-dimensional coordinate system, which is not limited here.

[0095] Then, the first coordinate value of the preset floor reference point A in the three-dimensional coordinate system and the second coordinate value of the knee vertex B in the three-dimensional coordinate system are determined.

[0096] Finally, the difference between the Z-axis coordinate value in the first coordinate value and the Z-axis coordinate value in the second coordinate value is determined as the shank length L2 of the target occupant 1.

[0097] The preset floor reference point A is a position point on the floor 2 of the vehicle 100 directly below the distance sensor 11.

[0098] In some embodiments, the seat is the first rear seat 7 or the second rear seat in the rear seats, and the occupant information sensing method further comprises:

[0099] controlling the distance sensor 11 to vertically scan at least a region corresponding to a fifth vertical angle range β5 of the floor region, wherein the lateral scanning angle of the distance sensor 11 remains the lateral initial angle when vertically scanning at the region corresponding to the fifth vertical angle range β5, and the fifth vertical angle range β5 starts from the vertical initial angle; and

[0100] determining the point with the shortest distance among the distances corresponding to the respective scanning angles detected during the process of vertically scanning at least the region corresponding to the fifth vertical angle range β5 of the floor region as the preset floor reference point A.

[0101] In some embodiments, the vertical initial angle is the vertical angle of the distance sensor 11 when the back of the cushion of the front seat of the seat is deflected by a preset vertical angle to one side of the seat, and the preset vertical angle is exemplarily 1°.

[0102] It can be understood that, as described above, since the adjustable angle range and the adjustable position range of the cushion of the driver seat 8 are limited when the driver is seated on the driver seat 8, the vertical angle of the distance sensor 11 when scanning the preset floor reference point A under the condition that the driver adjusts the cushion of the driver seat 8 to be at different angles and positions is within the fifth vertical angle range β5. Therefore, by controlling the distance sensor 11 to vertically scan at least the region corresponding to the fifth vertical angle range β5 of the floor region, the preset floor reference point A can be determined according to the distances corresponding to the respective scanning angles detected during the process of vertically scanning at least the region corresponding to the fifth vertical angle range β5 of the floor region. Figure 3 As shown in FIG. 6, when the distance sensor 11 vertically scans the region corresponding to the fifth vertical angle range β5 in the clockwise direction, the distance detected by the distance sensor 11 first decreases until it reaches a minimum value when scanning the preset floor reference point A, and then starts to increase. Therefore, the point with the shortest distance detected by the distance sensor 11 during the process of vertically scanning the region corresponding to the fifth vertical angle range β5 is the preset floor reference point A, that is, the distance detected by the distance sensor 11 when scanning the preset floor reference point A is the distance of the distance sensor 11 relative to the floor of the vehicle 100. The fifth vertical angle range β5 can be determined according to the statistical results of the vertical angles of the distance sensor 11 when scanning the preset floor reference point A under the condition that the driver adjusts the cushion of the driver seat 8 to be at different angles and positions.

[0103] In some embodiments, the body size further comprises an intercostal maximum thickness L4. The distance sensor 11 is controlled to scan at least towards the preset abdominal region of the target passenger 1 at different scanning angles, and according to the distances corresponding to each scanning angle detected by the distance sensor 11 during the scanning, the intercostal maximum thickness L4 of the target passenger 1 is determined.

[0104] The distance sensor 11 is controlled to scan at least towards the preset abdominal region of the target passenger 1 at different scanning angles, and according to the distances corresponding to each scanning angle detected by the distance sensor 11 during the scanning, the intercostal maximum thickness L4 of the target passenger 1 is determined.

[0105] It can be understood that when the target passenger 1 is seated on the seat, although the position of the abdomen of the target passenger 1 will be different with the height and obesity degree of the target passenger 1, it will always fall within the preset abdominal region. Therefore, by controlling the distance sensor 11 to scan the preset abdominal region of the target passenger 1 at different scanning angles, the position of the abdominal apex C of the target passenger 1 can be determined according to the distances corresponding to each scanning angle detected by the distance sensor 11 during the scanning, and then the intercostal maximum thickness L4 can be determined according to the position of the abdominal apex C of the target passenger 1. The preset abdominal region can be determined according to the statistical results of the abdominal position of passengers of different heights when they are seated on the seat.

[0106] Further, the distance sensor 11 is controlled to scan at least towards the preset abdominal region of the target passenger 1 at different scanning angles, and according to the distances corresponding to each scanning angle detected by the distance sensor 11 during the scanning, the intercostal maximum thickness L4 of the target passenger 1 is determined.

[0107] Further, the distance sensor 11 is controlled to scan at least towards the preset abdominal region of the target passenger 1 at different scanning angles, and according to the distances corresponding to each scanning angle detected by the distance sensor 11 during the scanning, the intercostal maximum thickness L4 of the target passenger 1 is determined.

[0108] The distance sensor 11 is controlled to scan at least towards the preset abdominal region of the target passenger 1 at different scanning angles, and according to the distances corresponding to each scanning angle detected by the distance sensor 11 during the scanning, the intercostal maximum thickness L4 of the target passenger 1 is determined.

[0109] According to the distance between the distance sensor 11 and a reference point G of a seat cushion on the seat, the scanning angle of the distance sensor 11 when scanning the reference point G of the seat cushion, and the distance between the distance sensor 11 and the abdominal apex C, the scanning angle of the distance sensor 11 when scanning the abdominal apex C, the maximum thickness L4 between the abdomen and back of the target occupant 1 is determined.

[0110] Further, the control of the distance sensor 11 to scan the preset abdominal region of the target occupant 1 at different scanning angles, and the determination of the point with the shortest distance in the distance corresponding to each scanning angle detected by the distance sensor 11 during scanning as the abdominal apex C of the target occupant, comprises:

[0111] The distance sensor 11 is controlled to vertically scan the region within the third vertical angle range β3 corresponding to the abdominal region; wherein the lateral scanning angle of the distance sensor 11 remains the lateral initial angle when the region within the third vertical angle range β3 is vertically scanned; and,

[0112] According to the distance corresponding to each scanning angle detected by the distance sensor 11 during the vertical scanning of the region within the third vertical angle range β3 corresponding to the abdominal region, the point with the shortest distance in the distance corresponding to each scanning angle detected by the distance sensor 11 during the vertical scanning of the region within the third vertical angle range β3 corresponding to the abdominal region is determined as the abdominal apex C of the target occupant 1.

[0113] In some embodiments, after the control of the distance sensor 11 to scan the preset abdominal region of the target occupant 1 at different scanning angles, and the determination of the point with the shortest distance in the distance corresponding to each scanning angle detected by the distance sensor 11 during scanning as the abdominal apex C of the target occupant, the occupant information sensing method further comprises:

[0114] The distance sensor 11 is controlled to laterally scan the region within the second lateral angle range α2 corresponding to the abdominal region with the abdominal apex C as the reference point. Wherein the vertical scanning angle of the distance sensor 11 remains the vertical scanning angle corresponding to the abdominal apex C of the target occupant 1 when the region within the second lateral angle range α2 is laterally scanned; and,

[0115] The point with a sudden increase in distance in the distance corresponding to each scanning angle detected by the distance sensor 11 during the lateral scanning of the region within the second lateral angle range α2 corresponding to the abdominal region is determined as the reference point G of the seat cushion.

[0116] It should be noted that in some other embodiments, when the seat is a third rear seat, the relative position of the distance sensor 11 and the seat is not adjustable, and the position of the seat cushion reference point G can be preset, instead of determining the abdominal vertex C after determining the abdominal vertex C of the target occupant 1.

[0117] In some implementations, the difference between the upper and lower limits of the third vertical angle range β3 is 20°.

[0118] For example, please refer to the following: Figure 1 , Figure 3 as well as Figure 5 , Figure 5 yes Figure 1 The diagram below illustrates the occupant information sensing device performing a lateral scan of the occupant's abdominal area, using the seat as an example. Figure 1 Taking the first rear seat 7 as an example, the method for determining the maximum thickness L4 between the abdomen and back of the target occupant 1 is described in detail.

[0119] It is understandable that when the target occupant 1 sits on the seat, although the position of the abdominal apex C of the target occupant 1 will vary depending on the height and degree of obesity of the target occupant 1, the vertical angle between the abdominal apex C of the target occupant 1 and the distance sensor 11 will always fall within the third vertical angle range β3. Therefore, by controlling the distance sensor 11 to perform vertical scanning at different scanning angles towards the third vertical angle range β3, the position of the abdominal apex C of the target occupant 1 can be determined based on the distances corresponding to each scanning angle detected by the distance sensor 11 during the scanning process. It is easy to understand that the distance between the abdominal apex C and the distance sensor 11 is the shortest in the region within the third vertical angle range β3. Therefore, the point with the shortest distance detected by the distance sensor 11 during the horizontal scanning process within the third vertical angle range β3 is the abdominal apex C. The third vertical angle range β3 can be determined based on the statistical results of the vertical angles when the distance sensor 11 scans the abdominal apex positions of occupants of different heights sitting on the seat.

[0120] Furthermore, after determining the abdominal apex C of the target occupant 1's leg 101, although the width of the abdomen 102 varies for occupants of different heights and weights, the lateral angle between the edge of the target occupant 1's abdomen and the distance sensor 11 will definitely fall within the second lateral angle range α2. Figure 5As shown, in the process of controlling the distance sensor 11 to perform lateral scanning on the region corresponding to the second lateral angle range a2 of the abdominal region with the abdominal apex C as the reference point, the distance detected by the distance sensor 11 continuously increases until the lateral scanning angle is θ1, and the scanning position of the distance sensor 11 changes from the abdomen of the target occupant 1 to the cushion reference point G, so that the distance detected by the distance sensor 11 will suddenly increase when scanning to the cushion reference point G. Therefore, according to the distance between the distance sensor 11 and the cushion reference point G, the scanning angle of the distance sensor 11 when scanning the cushion reference point G, and the distance between the distance sensor 11 and the abdominal apex C, the scanning angle of the distance sensor 11 when scanning the abdominal apex C, the maximum thickness L4 between the abdomen and back of the target occupant 1 can be determined. The second lateral angle range a2 can be determined according to the statistical results of the lateral angles of the distance sensor 11 when scanning the positions of the edges of the abdomen of the occupants with different heights and different body shapes when they are seated on the seat.

[0121] As described above, in the embodiment of the present application, after the cushion reference point G is determined, the maximum thickness L4 between the abdomen and back of the target occupant 1 can be determined by establishing a coordinate system, as follows:

[0122] First, as shown, a three-dimensional coordinate system is established with the installation position of the distance sensor 11 as the origin. Figure 1

[0123] Then, according to the distance between the distance sensor 11 and the cushion reference point G and the scanning angle of the distance sensor 11 when scanning the cushion reference point G, the third coordinate value of the cushion reference point G in the three-dimensional coordinate system is determined, and according to the distance between the distance sensor 11 and the abdominal apex C and the scanning angle of the distance sensor 11 when scanning the abdominal apex C, the fourth coordinate value of the abdominal apex C in the three-dimensional coordinate system is determined.

[0124] Finally, the difference between the Y-axis coordinate value in the third coordinate value and the Y-axis coordinate value in the fourth coordinate value is determined as the maximum thickness L4 between the abdomen and back of the target occupant 1.

[0125] In some embodiments, the limb size further includes the thigh length L3. After the process of controlling the distance sensor 11 to scan the preset knee region of the target occupant 1 at different scanning angles, and determining the point with the shortest distance corresponding to each scanning angle in the distances detected by the distance sensor 11 during scanning as the knee apex B of the target occupant, the occupant information sensing method further includes:

[0126] ​According to the distance between the distance sensor 11 and the cushion reference point G on the seat, the scanning angle of the distance sensor 11 when scanning the cushion reference point G, and the distance between the distance sensor 11 and the knee vertex B, the scanning angle of the distance sensor 11 when scanning the knee vertex B, the thigh length L3 of the target occupant 1 is determined.

[0127] As described above, in the embodiment of the present application, after the cushion reference point G is determined, the thigh length L3 of the target occupant 1 can be determined by establishing a coordinate system, as follows:

[0128] First, as shown in FIG. 6, a three-dimensional coordinate system is established with the installation position of the distance sensor 11 as the origin. Figure 1

[0129] Then, according to the distance between the distance sensor 11 and the cushion reference point G and the scanning angle of the distance sensor 11 when scanning the cushion reference point G, the third coordinate value of the cushion reference point G in the three-dimensional coordinate system is determined, and according to the distance between the distance sensor 11 and the knee vertex B and the scanning angle of the distance sensor 11 when scanning the knee vertex B, the fifth coordinate value of the knee vertex B in the three-dimensional coordinate system is determined.

[0130] Finally, the difference between the Y-axis coordinate value in the third coordinate value and the Y-axis coordinate value in the fifth coordinate value is determined as the thigh length L3 of the target occupant 1.

[0131] In some embodiments, the body size further includes a height H. The control of the distance sensor 11 to scan at least the target occupant 1, and according to the corresponding distance detected by the distance sensor 11 during the scanning process, the determination of the occupant information of the target occupant 1, further includes:

[0132] The distance sensor 11 is controlled to scan the preset head region of the target occupant 1 at different scanning angles, and according to the distance corresponding to each scanning angle detected by the distance sensor 11 during the scanning process, the head vertex D of the target occupant 1 is determined; and,

[0133] The sum of the head vertex D of the target occupant 1, the distance L5 of the distance sensor 11 in the vertical direction, the distance L1 of the distance sensor 11 from the floor reference point in the vertical direction, and the thigh length L3 of the target occupant 1 is determined as the height H of the target occupant 1.

[0134] Exemplarily, as shown in FIG. 7, the height H of the target occupant 1 = L1 + L3 + L5. Figure 3 ​​

[0135] Further, the control of the distance sensor 11 to scan the preset head region of the target passenger 1 at different scanning angles, and determining the head vertex D of the target passenger 1 according to the distance detected by the distance sensor 11 at each scanning angle during the scanning process, comprises:

[0136] The distance sensor 11 is controlled to vertically scan the region within the fourth vertical angle range β4 corresponding to the head region. Wherein, when the region within the fourth vertical angle range β4 is vertically scanned, the lateral scanning angle of the distance sensor 11 remains the lateral initial angle; and,

[0137] The head vertex D of the target passenger 1 is determined according to the distance detected by the distance sensor 11 at each scanning angle during the process of vertically scanning the region within the fourth vertical angle range β4 corresponding to the head region.

[0138] It can be understood that when the target passenger 1 is seated on the seat, although the position of the head of the target passenger 1 will be different with the different heights of the target passenger 1, the vertical angle between the head of the target passenger 1 and the distance sensor 11 will always fall within the fourth vertical angle range β4. Therefore, by controlling the distance sensor 11 to scan the fourth vertical angle range β4 at different scanning angles, the position of the head vertex D of the target passenger 1 can be determined according to the distance detected by the distance sensor 11 at each scanning angle during the scanning process. Wherein, the fourth vertical angle range β4 can be determined according to the statistical results of the vertical angles of the distance sensor 11 when scanning the head vertex of the passenger with different heights seated on the seat.

[0139] Further, the control of the distance sensor 11 to scan the preset head region of the target passenger 1 at different scanning angles, and determining the head vertex D of the target passenger 1 according to the distance detected by the distance sensor 11 at each scanning angle during the scanning process, comprises:

[0140] The boundary point before the distance suddenly increases in the distance detected by the distance sensor 11 at each scanning angle during the process of vertically scanning the region within the fourth vertical angle range β4 corresponding to the head region is determined as the head vertex D of the target passenger 1.

[0141] In some embodiments, the body size further comprises a shoulder width L6. After the distance sensor 11 is controlled to scan the preset head region of the target occupant 1 at different scanning angles, and the vertex D of the head of the target occupant 1 is determined according to the distance detected by the distance sensor 11 at each scanning angle during the scanning process, the occupant information sensing method further comprises:

[0142] controlling the distance sensor 11 to at least scan the preset chest-shoulder region of the target occupant 1 laterally, and determining the shoulder width L6 of the target occupant 1 according to the distance detected by the distance sensor 11 at each scanning angle during the scanning process. Wherein, the preset chest-shoulder region is located below the vertex D of the head, and the distance between the preset chest-shoulder region and the vertex D of the head in the vertical direction is a first preset distance.

[0143] It is found through statistics that the position 0.2 times the height H from the top of the human body generally corresponds to the chest-shoulder region of the human body. Therefore, in some embodiments, the first preset distance is 0.2 times the height H of the target occupant 1.

[0144] In some embodiments, the controlling the distance sensor 11 to at least scan the preset chest-shoulder region of the target occupant 1 laterally, and determining the shoulder width L6 of the target occupant 1 according to the distance detected by the distance sensor 11 at each scanning angle during the scanning process, comprises:

[0145] controlling the distance sensor 11 to scan the region within the third lateral angle range a3 corresponding to the chest-shoulder region laterally. Wherein, when the region within the third lateral angle range a3 is scanned laterally, the scanning point of the distance sensor 11 is located below the vertex D of the head, and the distance between the scanning point of the distance sensor 11 and the vertex D of the head in the vertical direction is the first preset distance;

[0146] determining the left shoulder end point H and the right shoulder end point I according to the distance detected by the distance sensor 11 at each scanning angle during the process of scanning the region within the third lateral angle range a3 corresponding to the chest-shoulder region laterally; and,

[0147] determining the distance between the left shoulder end point H and the right shoulder end point I as the shoulder width L6 of the target occupant 1.

[0148] For example, please refer to Figure 1 , Figure 3 and Figure 6 , Figure 6 , Figure 1 , Figure 1Taking the first rear seat 7 as an example, the method for determining the shoulder width L6 of the target occupant 1 will be described in detail.

[0149] It is not difficult to understand that although the shoulder widths of occupants of different weights vary, the left shoulder endpoint H and right shoulder endpoint I of the target occupant 1 will definitely fall within the third lateral angle range α3, such as... Figure 6 As shown, during the process of controlling the distance sensor 11 to perform a lateral scan within a region at least corresponding to the third lateral angle range α3 of the chest and shoulder area, when the distance detected by the distance sensor 11 suddenly increases, it can be determined that the scanned position is the left shoulder endpoint H or the right shoulder endpoint I, as shown. Figure 6 As shown, the scanning position of the distance sensor 11 at a lateral scanning angle of θ2 is the left shoulder endpoint H, and the scanning position at a lateral scanning angle of θ3 is the right shoulder endpoint I. The third lateral angle range α3 can be determined based on the statistical results of the lateral angles when the distance sensor 11 scans the left and right shoulder endpoints of occupants with different shoulder widths sitting in the seat.

[0150] As mentioned above, in this embodiment of the application, after determining the left shoulder endpoint H and the right shoulder endpoint I, the shoulder width L6 of the target occupant 1 can be determined by establishing a coordinate system, as follows:

[0151] First, such as Figure 1 As shown, a three-dimensional coordinate system is established with the installation position of the distance sensor 11 as the origin.

[0152] Then, based on the distance between the distance sensor 11 and the left shoulder endpoint H and the scanning angle of the distance sensor 11 when scanning the left shoulder endpoint H, the sixth coordinate value of the left shoulder endpoint H in the three-dimensional coordinate system is determined. Based on the distance between the distance sensor 11 and the right shoulder endpoint I and the scanning angle of the distance sensor 11 when scanning the right shoulder endpoint I, the seventh coordinate value of the right shoulder endpoint I in the three-dimensional coordinate system is determined.

[0153] Finally, the difference between the X-axis coordinate value in the sixth coordinate value and the X-axis coordinate value in the seventh coordinate value is determined as the shoulder width L6 of the target occupant 1.

[0154] It should be noted that, in some embodiments, the distance sensor 11 can complete a vertical scan of the region within the first vertical angle range β1, the region within the third vertical angle range β3, the region within the fourth vertical angle range β4, and the region within the fifth vertical angle range β5 in a single scan, for example... Figure 1As shown, the vertical scanning of the area in the sixth vertical angle range is started from the vertical initial angle, wherein the lateral scanning angle of the distance sensor 11 remains the lateral initial angle when the area in the sixth vertical angle range is vertically scanned, the first vertical angle range β1, the third vertical angle range β3, the fourth vertical angle range β4 and the fifth vertical angle range β5 are all located in the sixth vertical angle range, and the scanning direction of the distance sensor 11 when scanning the area in the sixth vertical angle range can be clockwise or counterclockwise.

[0155] In some embodiments, the weight of the target occupant 1 is determined according to the limb size of the target occupant 1.

[0156] Further, the weight of the target occupant 1 is determined according to the limb size of the target occupant 1, including:

[0157] The weight of the target occupant 1 is calculated by a preset weight estimation model with the limb size as input. The preset weight estimation model is a model trained by a machine learning algorithm based on multiple sets of human parameter samples.

[0158] For example, the machine learning algorithm includes one or more of a deep neural network, XGboost, a decision tree, a random forest, a gradient boosting tree, K-nearest neighbors, Naive Bayes, logistic regression or linear regression.

[0159] In some embodiments, the body fat of the target occupant 1 is determined according to the limb size of the target occupant 1.

[0160] Further, the body fat of the target occupant 1 is determined according to the limb size of the target occupant 1, including:

[0161] The body fat of the target occupant 1 is calculated by a preset body fat estimation model with the limb size as input. The preset body fat estimation model is a model trained by a machine learning algorithm based on multiple sets of human parameter samples.

[0162] In some embodiments, the occupant information sensing device 10 further includes a temperature sensor 12.

[0163] After the control of the distance sensor 11 to scan the preset head region of the target occupant 1 at different scanning angles and the determination of the vertex D of the head of the target occupant 1 according to the distance detected by the distance sensor 11 at each scanning angle during the scanning process, the occupant information sensing method further includes:

[0164] The temperature sensor 12 is controlled to measure the temperature of a preset temperature measurement area of the target occupant 1. The preset temperature measurement area is below the head vertex D and has a second preset distance from the head vertex D in the vertical direction.

[0165] It is found through statistics that the position 0.1 times the height H from the head top generally corresponds to the face of the human body. Therefore, in some embodiments, the second preset distance is 0.1 times the height H of the target occupant 1. The temperature sensor 12 is an infrared probe, for example.

[0166] In some embodiments, the temperature of the vehicle air conditioner is adjusted according to at least the weight and / or body fat of the target occupant 1, including:

[0167] The temperature of the vehicle air conditioner is adjusted according to the temperature measurement result of the preset temperature measurement area of the target occupant 1 measured by the temperature sensor 12 and the weight and / or body fat of the target occupant 1.

[0168] In some embodiments, the seat is provided with a safety belt including a webbing, a tongue plate, and a buckle for locking the tongue plate. The occupant information sensing device further includes a safety belt state monitoring module, and the occupant information sensing method further includes:

[0169] The state of the safety belt of the seat is monitored by the safety belt state monitoring module, and when it is monitored that the webbing is pulled out, the tongue plate is inserted into the buckle, and the pulling-out length of the webbing no longer changes, it is determined that the occupant is seated on the seat.

[0170] In some embodiments, the occupant information sensing method further includes:

[0171] When the infotainment system of the vehicle 100 is turned off, the distance sensor 11 and / or the temperature sensor 12 are controlled to reset.

[0172] In this way, the scanning direction of the distance sensor 11 is the same each time the vehicle 100 is restarted.

[0173] Please refer to Figure 1 , based on the same inventive concept, the present application also provides an occupant information sensing device 10 applied to a vehicle 100, the occupant information sensing device 10 includes a distance sensor 11 and a control module (not shown in the figure), and the occupant information sensing device 10 is installed in front of a seat of the vehicle 100.

[0174] The control module is electrically connected with the distance sensor 11, and the control module is used to execute the occupant information sensing method of any one of the above-mentioned embodiments.

[0175] In some embodiments, the distance sensor 11 is a single line radar.

[0176] In some embodiments, the distance sensor 11 can further include a vertical rotation rudder 13 and a horizontal rotation rudder 14.

[0177] In some embodiments, the occupant information sensing device 10 further includes a temperature sensor 12.

[0178] In some embodiments, the occupant information sensing device 10 is installed in a hidden cover 9 for passing infrared light and shielding visible light. In some embodiments, the occupant information sensing device 10 is installed in a hidden cover 9 for passing infrared light and shielding visible light.

[0179] The hidden cover 9 can be made of black glass infrared filter, since the wavelength range of visible light is 390-760nm, and the black glass infrared filter can prevent light below 760nm from passing through and only allow light above 760nm to pass through, so that the occupant information sensing device 10 is arranged in the hidden cover 9, which can be fully integrated with the seat, so that customers cannot observe any monitoring equipment, and the concealment is better. The hidden cover 9 can be made in any shape.

[0180] Please refer to Figure 1 , based on the same inventive concept, the application also provides a vehicle 100, the vehicle 100 includes a seat and the occupant information sensing device 10 of any of the above embodiments.

[0181] The occupant information sensing device 10 and the vehicle 100 provided by the application scan at least the target occupant 1 by the distance sensor 11, and determine the occupant information of the target occupant 1 according to the corresponding distance detected by the distance sensor 11 during the scanning process, without obtaining private information such as human RBG, depth, infrared picture, human behavior, face, iris, gender and age, which has higher privacy and is conducive to the widespread use of in-vehicle information sensing technology.

[0182] Based on the same inventive concept, the application further provides a computer readable storage medium, the computer readable storage medium stores executable instructions, when the executable instructions are executed by a processor, the above-mentioned occupant information sensing method is realized.

[0183] The computer storage medium of the embodiments of the present application can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. More specific examples (a non-exhaustive list) of the computer-readable storage medium include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, the computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device.

[0184] The computer-readable signal medium can include a data signal propagated in baseband or propagated as a carrier wave, in which the computer-readable program code is contained. Such propagated data signals can take a wide variety of forms, including but not limited to electro-magnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium that is not a storage medium, that is, that is not a tangible medium.

[0185] The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber cable, RF, and the like, or any suitable combination of the above.

[0186] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object-oriented programming language such as Java, Smalltalk, C++, or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider). In some embodiments, electronic circuitry including, for example, programmable logic circuitry, application specific circuitry, or field programmable gate array (FPGA) circuitry can execute the computer program code.

[0187] While the embodiments of the application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. An occupant information sensing method characterized by comprising: The passenger information sensing method is applied to a passenger information sensing device on a vehicle, the passenger information sensing device comprising a distance sensor, and the passenger information sensing method comprising: After a target passenger is seated on a seat, the distance sensor is controlled to scan at least towards the target passenger, and passenger information of the target passenger is determined according to distances detected by the distance sensor during the scanning; wherein the passenger information comprises at least one of a limb size, a body weight, and a body fat of the target passenger; The limb size comprises an inter-abdominal maximum thickness; and the controlling the distance sensor to scan at least towards the target passenger and determining the passenger information of the target passenger according to distances detected by the distance sensor during the scanning comprises: The distance sensor is controlled to scan at least towards a preset abdominal region of the target passenger at different scanning angles, and the inter-abdominal maximum thickness of the target passenger is determined according to distances detected by the distance sensor at different scanning angles during the scanning; The controlling the distance sensor to scan at least towards a preset abdominal region of the target passenger at different scanning angles and determining the inter-abdominal maximum thickness of the target passenger according to distances detected by the distance sensor at different scanning angles during the scanning comprises: The distance sensor is controlled to scan towards a preset abdominal region of the target passenger at different scanning angles, and a point with the shortest distance among distances detected by the distance sensor at different scanning angles during the scanning is determined as an abdominal apex of the target passenger; and The inter-abdominal maximum thickness of the target passenger is determined according to a distance between the distance sensor and a reference point of a cushion on the seat, a scanning angle of the distance sensor when scanning the reference point of the cushion, and a distance between the distance sensor and the abdominal apex, a scanning angle of the distance sensor when scanning the abdominal apex.

2. The occupant information sensing method according to claim 1, characterized by, The passenger information sensing device is configured to be installed in front of the target passenger.

3. The occupant information sensing method according to claim 1, characterized by, The limb size comprises a calf length, and the controlling the distance sensor to scan at least towards the target passenger and determining the passenger information of the target passenger according to distances detected by the distance sensor during the scanning comprises: The distance sensor is controlled to scan towards a preset knee region of the target passenger at different scanning angles, and the calf length of the target passenger is determined according to distances detected by the distance sensor at different scanning angles during the scanning.

4. The occupant information sensing method according to claim 3, characterized by, The controlling the distance sensor to scan towards a preset knee region of the target passenger at different scanning angles and determining the calf length of the target passenger according to distances detected by the distance sensor at different scanning angles during the scanning comprises: The distance sensor is controlled to scan towards a preset knee region of the target passenger at different scanning angles, and a point with the shortest distance among distances detected by the distance sensor at different scanning angles during the scanning is determined as a knee apex of the target passenger; and The calf length of the target passenger is determined according to a distance between the distance sensor and a reference point of a cushion on the seat, a scanning angle of the distance sensor when scanning the reference point of the cushion, and a distance between the distance sensor and the knee apex, a scanning angle of the distance sensor when scanning the knee apex. control the distance sensor to scan a preset knee region of the target occupant at different scanning angles, and determine a point with the shortest distance in distances corresponding to respective scanning angles detected by the distance sensor in the process of scanning as a knee vertex of the target occupant; and determine a distance between the knee vertex and a preset floor reference point in a vertical direction as a calf length of the target occupant.

5. The occupant information sensing method according to claim 4, characterized by, The control of the distance sensor to scan a preset knee region of the target occupant at different scanning angles, and the determination of a point with the shortest distance in distances corresponding to respective scanning angles detected by the distance sensor in the process of scanning as a knee vertex of the target occupant, include: control the distance sensor to perform vertical scanning on a region corresponding to at least a first vertical angle range of the seat cushion edge region; wherein the transverse scanning angle of the distance sensor is kept as a transverse initial angle when the region in the first vertical angle range is vertically scanned, and the transverse initial angle is a transverse scanning angle when a scanning direction of the distance sensor directly faces a center of the seat cushion; determine a point with the shortest distance in distances corresponding to respective scanning angles detected by the distance sensor in the process of vertical scanning on the region in the first vertical angle range as a seat cushion edge reference point of the seat cushion; control the distance sensor to perform transverse scanning on a region corresponding to at least a first transverse angle range of the leg region with the seat cushion edge reference point as a reference point; wherein the vertical scanning angle of the distance sensor is kept as a vertical scanning angle corresponding to the seat cushion edge reference point when the region in the first transverse angle range is transversely scanned; determine a point with the shortest distance in distances corresponding to respective scanning angles detected by the distance sensor in the process of transverse scanning on the region in the first transverse angle range as a leg reference point of the target occupant; control the distance sensor to perform vertical scanning on a region corresponding to at least a second vertical angle range of the knee region with the leg reference point as a reference point; wherein the transverse scanning angle of the distance sensor is kept as a transverse scanning angle corresponding to the leg reference point when the region in the second vertical angle range is vertically scanned; and determine a point with the shortest distance in distances corresponding to respective scanning angles detected by the distance sensor in the process of vertical scanning on the region in the second vertical angle range as a knee vertex of the target occupant.

6. The occupant information sensing method according to claim 1, wherein The control of the distance sensor to scan a preset knee region of the target occupant at different scanning angles, and the determination of a point with the shortest distance in distances corresponding to respective scanning angles detected by the distance sensor in the process of scanning as a knee vertex of the target occupant, include: control the distance sensor to perform vertical scanning on a region in a third vertical angle range corresponding to the abdominal region; wherein, when the distance sensor performs vertical scanning on the region in the third vertical angle range, a horizontal scanning angle of the distance sensor remains a horizontal initial angle, wherein the horizontal initial angle is a horizontal scanning angle when a scanning direction of the distance sensor directly faces a center of a seat cushion of the seat; and determine a point with a shortest distance among distances corresponding to respective scanning angles detected by the distance sensor during vertical scanning of the region in the third vertical angle range as an abdominal apex of the target occupant.

7. The occupant information sensing method according to claim 6, characterized by, after the control of the distance sensor to scan the preset abdominal region of the target occupant at different scanning angles, and the determination of a point with a shortest distance among distances corresponding to respective scanning angles detected by the distance sensor during scanning as the abdominal apex of the target occupant, the occupant information sensing method further comprises: control the distance sensor to perform horizontal scanning on a region in a second horizontal angle range corresponding to the abdominal region with the abdominal apex as a reference point; wherein, when the distance sensor performs horizontal scanning on the region in the second horizontal angle range, a vertical scanning angle of the distance sensor remains a vertical scanning angle corresponding to the abdominal apex of the target occupant; and determine a point with a sudden increase in distance among distances corresponding to respective scanning angles detected by the distance sensor during horizontal scanning of the region in the second horizontal angle range as a cushion reference point of the seat.

8. The occupant information sensing method according to claim 5, characterized by, the limb size further comprises a thigh length; after the control of the distance sensor to scan the preset knee region of the target occupant at different scanning angles, and the determination of a point with a shortest distance among distances corresponding to respective scanning angles detected by the distance sensor during scanning as a knee apex of the target occupant, the occupant information sensing method further comprises: determine a thigh length of the target occupant according to a distance between the distance sensor and a cushion reference point on the seat, a scanning angle of the distance sensor when scanning the cushion reference point, and a distance between the distance sensor and the knee apex, a scanning angle of the distance sensor when scanning the knee apex.

9. The occupant information sensing method according to claim 8, characterized by, the limb size further comprises a height; the control of the distance sensor to scan at least the target occupant, and the determination of occupant information of the target occupant according to distances detected by the distance sensor during scanning further comprises: control the distance sensor to scan a preset head region of the target occupant at different scanning angles, and determine a head apex of the target occupant according to distances corresponding to respective scanning angles detected by the distance sensor during scanning; and determine a height of the target occupant as a sum of a distance between the head apex of the target occupant and the distance sensor in a vertical direction, a distance between the distance sensor and the floor reference point in the vertical direction, and the thigh length of the target occupant.

10. The occupant information sensing method according to claim 9, characterized by, The control of the distance sensor to scan the preset head region of the target passenger at different scanning angles includes: controlling the distance sensor to vertically scan at least a region corresponding to the fourth vertical angle range; wherein the lateral scanning angle of the distance sensor remains the initial lateral angle when vertically scanning at the region within the fourth vertical angle range; and determining the head vertex of the target passenger according to the distance detected by the distance sensor at each scanning angle during the vertical scanning of the region within the fourth vertical angle range.

11. The occupant information sensing method according to claim 9, characterized by, The limb size further includes a shoulder width; after the control of the distance sensor to scan the preset head region of the target passenger at different scanning angles and determine the head vertex of the target passenger according to the distance detected by the distance sensor at each scanning angle, the passenger information sensing method further includes: controlling the distance sensor to at least laterally scan the preset chest-shoulder region of the target passenger, and determining the shoulder width of the target passenger according to the distance detected by the distance sensor at each scanning angle during the scanning process; wherein the preset chest-shoulder region is located below the head vertex and has a first preset distance from the head vertex in the vertical direction.

12. The occupant information sensing method according to claim 11, wherein The control of the distance sensor to at least laterally scan the preset chest-shoulder region of the target passenger and determine the shoulder width of the target passenger according to the distance detected by the distance sensor at each scanning angle during the scanning process includes: controlling the distance sensor to laterally scan at least a region corresponding to the third lateral angle range; wherein the scanning point of the distance sensor is located below the head vertex and has a first preset distance from the head vertex in the vertical direction when laterally scanning at the region within the third lateral angle range; determining the left shoulder endpoint and the right shoulder endpoint according to the distance detected by the distance sensor at each scanning angle during the lateral scanning of the region within the third lateral angle range corresponding to the chest-shoulder region; and determining the distance between the left shoulder endpoint and the right shoulder endpoint as the shoulder width of the target passenger.

13. The occupant information sensing method according to claim 1, wherein The body weight of the target passenger is determined according to the limb size of the target passenger.

14. The occupant information sensing method according to claim 13, characterized by, The body weight of the target passenger is determined according to the limb size of the target passenger, including: inputting the limb size into a preset body weight estimation model to calculate the body weight of the target passenger; wherein the preset body weight estimation model is a model trained by a machine learning algorithm based on a plurality of human parameter samples.

15. The occupant information sensing method according to claim 1, wherein The body fat of the target passenger is determined according to the limb size of the target passenger.

16. The occupant information sensing method according to claim 15, wherein The body fat of the target passenger is determined according to the limb size of the target passenger, including: The body fat of the target occupant is calculated by a preset body fat estimation model based on the limb size as input, wherein the preset body fat estimation model is a model trained by a machine learning algorithm based on a plurality of sets of human parameter samples.

17. The occupant information sensing method according to claim 9, characterized by, The occupant information sensing device further comprises a temperature sensor. After the distance sensor is controlled to scan the preset head region of the target occupant at different scanning angles, and the vertex of the head of the target occupant is determined according to the distance corresponding to each scanning angle detected by the distance sensor during the scanning process, the occupant information sensing method further comprises: The temperature sensor is controlled to measure the temperature of the preset temperature measurement region of the target occupant, wherein the preset temperature measurement region is located below the vertex of the head and is vertically spaced apart from the vertex of the head by a second preset distance.

18. The occupant information sensing method according to claim 11, wherein The first preset distance is 0.2 times the height of the target occupant.

19. The occupant information sensing method according to claim 17, wherein The second preset distance is 0.1 times the height of the target occupant.

20. The occupant information sensing method according to claim 1, wherein The occupant information includes the weight and / or body fat of the target occupant, and after the distance sensor is controlled to scan at least the target occupant, and the occupant information of the target occupant is determined according to the corresponding distance detected by the distance sensor during the scanning process, the occupant information sensing method further comprises: The temperature of the vehicle-mounted air conditioner is adjusted according to at least the weight and / or body fat of the target occupant.

21. An occupant information sensing device applied to a vehicle, characterized by comprising: The occupant information sensing device comprises: A distance sensor installed in front of a seat of a vehicle; A control module electrically connected to the distance sensor, the control module being configured to execute the occupant information sensing method according to any one of claims 1-20.

22. The occupant information sensing device of claim 21, wherein The distance sensor is a single-line radar.

23. The occupant information sensing device of claim 21, wherein The occupant information sensing device further comprises a temperature sensor.

24. The occupant information sensing device of claim 21, wherein The occupant information sensing device is configured to be installed in a hidden cover for allowing infrared light to pass through and for shielding visible light.

25. A vehicle characterized by Comprise: A seat; And The occupant information sensing device according to any one of claims 21-24.

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