Living body detection method, automobile domain controller and automobile

Abstract

The invention discloses a living body detection method, an automobile domain controller and an automobile, a detection radar is arranged on a rotatable ceiling screen, the detection area of the detection radar is changed through rotation of the ceiling screen, the whole in-vehicle space of the automobile can be detected by a single detection radar, and the living body detection cost of the automobile is reduced. When the automobile is in a power-off locking working condition, the detection radar is firstly controlled to carry out preliminary living body detection on the automobile, when the preliminary detection result is that the living body feature exists, the position interval of the living body feature is determined according to the current rotation angle of the ceiling screen, and then the ceiling screen is controlled to rotate to the preset angle with the best detection precision of the detection radar. And controlling the detection radar to perform deep living body detection on the position interval, and outputting a first alarm signal when the depth detection result is that the living body feature exists. Therefore, the accuracy of in-vivo detection of the automobile can be effectively improved, whether a person exists in the automobile after the automobile is powered off and locked or not is accurately judged, and the safety of the automobile during power-off and locking is improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile liveness detection, and in particular to a liveness detection method, an automobile domain controller and an automobile. Background Art

[0002] In recent years, there have been many incidents where children have been forgotten in cars, endangering their personal safety. Currently, a liveness detection radar is installed inside the car to detect liveness inside the car after the car is locked electrically. However, the detection range of the liveness detection radar is limited and can only detect certain areas. In order to detect liveness in various areas inside the car, multiple detection radars need to be installed, resulting in higher car costs. Summary of the invention

[0003] In view of this, the present application provides a liveness detection method, a vehicle domain controller and a vehicle, which are used to reduce the cost of liveness detection in a vehicle. The technical solution of the present application is as follows: A first aspect of the present application provides a liveness detection method, which is applied to a car, wherein a rotatable ceiling screen is provided on the inner top of the car, and a detection radar is provided on the ceiling screen. The liveness detection method comprises: when the car is in a state of being electrically locked, controlling the detection radar to perform a preliminary liveness detection on the car; in response to the preliminary detection result that a liveness feature exists in the car, determining a position interval of the liveness feature according to a current rotation angle of the ceiling screen; controlling the ceiling screen to rotate to a preset angle according to the position interval; wherein, when the ceiling screen is at the preset angle, the detection radar has the best liveness detection accuracy for the position interval; in response to the ceiling screen rotating to the preset angle, controlling the detection radar to perform a deep liveness detection on the position interval; and outputting a first alarm signal when the deep detection result indicates that a liveness feature exists in the car.

[0004] In one embodiment of the present application, the liveness detection method also includes: when the preliminary detection result or the depth detection result is that there is no liveness feature in the car, controlling the ceiling screen to rotate from the current rotation angle in a preset angle step; in response to the ceiling screen completing the rotation in the preset angle step, controlling the detection radar again to perform preliminary liveness detection on the car until the ceiling screen rotates from a closed state to a fully open state or the depth detection result is that there is liveness feature in the car.

[0005] In one embodiment of the present application, when the ceiling screen rotates from a closed state to a fully open state, the detection range of the detection radar moves from the rear area of ​​the car to the front area of ​​the car.

[0006] In an embodiment of the present application, the liveness detection method further includes: when the preliminary detection result is that liveness features exist in the car, outputting a second alarm signal; wherein the second alarm signal is different from the first alarm signal.

[0007] In one embodiment of the present application, the first alarm signal is used to be sent to a mobile terminal paired with the car, so that the mobile terminal generates an alarm message according to the first alarm signal; the second alarm signal is used to control the lighting system of the car to flash an alarm and / or control the buzzer of the car to sound an alarm.

[0008] In one embodiment of the present application, the living body detection method further includes: consulting a correspondence table between the detection range of the detection radar and the rotation angle of the ceiling screen; and determining the preset angle according to the position range currently detected by the detection radar.

[0009] A second aspect of the present application provides an automobile domain controller, comprising: a memory for storing a computer program; and a processor for implementing the above-mentioned liveness detection method when executing the computer program.

[0010] According to a third aspect of the present application, there is provided a car, comprising a ceiling screen and a car domain controller, wherein the ceiling screen is rotatably arranged on the inner top of the car, a detection radar is arranged on the ceiling screen, and the car domain controller is communicatively connected with the ceiling screen and the detection radar; the car domain controller is used to: when the car is in a lower electric lock state, send a first detection instruction to the detection radar, so that the detection radar performs a preliminary liveness detection on the car according to the first detection instruction; receive a preliminary detection signal output by the detection radar; when the preliminary detection signal indicates the presence of liveness features and the ceiling screen is rotated to a preset angle, send a second detection instruction to the detection radar, so that the detection radar performs a deep liveness detection on the car according to the second detection instruction; wherein, when the ceiling screen is at the preset angle, the detection radar has the best liveness detection accuracy for the position interval corresponding to the preset angle; receive a depth detection signal output by the detection radar, and output a first alarm signal when the depth detection signal indicates the presence of liveness features in the car.

[0011] In one embodiment of the present application, the ceiling screen is communicatively connected to the detection radar, and the ceiling screen is used to: receive the preliminary detection signal; when the preliminary detection signal indicates the presence of living features, rotate to the preset angle; when rotated to the preset angle, send an indication signal to the vehicle domain controller; the indication signal indicates that the ceiling screen has been rotated to the preset angle; when the preliminary detection signal indicates that there are no living features in the car, the ceiling screen rotates from the current rotation angle in preset angle steps.

[0012] In one embodiment of the present application, the car also includes a vehicle-mounted T-BOX, which is communicatively connected to the car domain controller, and the vehicle-mounted T-BOX is used to receive the first alarm signal and send the first alarm signal to a mobile terminal paired with the car, so that the mobile terminal generates alarm information according to the first alarm signal.

[0013] In the liveness detection method, automobile domain controller and automobile of the present application, by setting the detection radar on a rotatable ceiling screen, the detection area of ​​the detection radar can be changed by rotating the ceiling screen, so that a single detection radar can detect the entire interior space of the car, thereby reducing the cost of liveness detection of the car. When the car is in the working condition of the car being electrically locked, the detection radar is first controlled to perform a preliminary liveness detection on the car. When the preliminary detection result shows that there are liveness features, the position interval of the liveness features is determined according to the current rotation angle of the ceiling screen, and then the ceiling screen is controlled to rotate to the preset angle with the best detection accuracy of the detection radar, and the detection radar is controlled to perform a deep liveness detection on the position interval. When the deep detection result also shows that there are liveness features, a first alarm signal is output to remind the owner of the safety of the people in the car. In this way, the accuracy of the car's liveness detection can be effectively improved, and it can be accurately judged whether there are still people inside the car after the car is electrically locked, thereby improving the safety of the car being electrically locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a flow chart of the liveness detection method provided in the embodiment of the present application.

[0015] Figure 2 It is a partial flow chart of a liveness detection method provided in another embodiment of the present application.

[0016] Figure 3 It is the detection area of ​​the detection radar when the ceiling screen in the embodiment of the present application is at a partial rotation angle.

[0017] Figure 4 This is a partial flow chart of a liveness detection method provided in another embodiment of the present application.

[0018] Figure 5 It is a module schematic diagram of the automobile domain controller provided in an embodiment of the present application.

[0019] Figure 6 It is a module schematic diagram of the automobile provided in an embodiment of the present application.

[0020] Figure 7 It is a schematic diagram of the structure of the ceiling screen and detection radar provided in the embodiment of the present application.

[0021] Figure 8 It is a module schematic diagram of a car provided in another embodiment of the present application. DETAILED DESCRIPTION

[0022] It should be noted that in the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more than two. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0023] It should also be noted that the method disclosed in the embodiments of the present application or the method shown in the flowchart includes one or more steps for implementing the method. Without departing from the scope of the claims, the execution order of multiple steps can be interchangeable with each other, and some of the steps can also be deleted.

[0024] Please refer to Figure 1 , Figure 1 A flow chart of a liveness detection method provided in an embodiment of the present application. It can be understood that the liveness detection method can be applied to a car, and a rotatable ceiling screen is provided on the top of the car, and a detection radar is provided on the ceiling screen. Among them, the liveness detection method can be executed by a controller of the car, or it can be executed jointly by multiple controllers in the car, or it can be executed jointly by a controller of the car and the ceiling screen. The controller of the car is, for example, a car domain controller, a body controller, etc.

[0025] like Figure 1 As shown, the liveness detection method may include: Step S100: When the vehicle is in the electric lock state, the detection radar is controlled to perform preliminary liveness detection on the vehicle.

[0026] Among them, when the car is in the electric locking condition, the car domain controller, ceiling screen and detection radar are all in a shallow sleep state. When the car domain controller enters the shallow sleep state, it sends a detection command to the detection radar, so that the detection radar sends out a detection wave according to the detection command, and realizes preliminary liveness detection of the car based on the detection wave reflected back to the detection radar.

[0027] Step S200: In response to the preliminary detection result indicating that there is a living body feature in the car, a position interval of the living body feature is determined according to the current rotation angle of the ceiling screen.

[0028] When the preliminary detection result shows that there are living features in the car, the location interval of the living features can be determined based on the current rotation angle of the ceiling screen, the detection range of the detection radar itself, and the detection waves reflected back to the detection radar.

[0029] Step S300: Control the ceiling screen to rotate to a preset angle according to the position interval.

[0030] Among them, when the ceiling screen is at a preset angle, the detection radar has the best accuracy in detecting live bodies in the position interval. It can be understood that there can be a correspondence table between the position interval detected by the detection radar and the rotation angle of the ceiling screen, and each position interval has a corresponding rotation angle, so that the detection radar has the best detection accuracy for the position interval. After determining the position interval, the preset angle with the best detection accuracy of the detection radar can be determined according to the correspondence table, and the ceiling screen can be rotated to the preset angle.

[0031] Step S400: In response to the ceiling screen rotating to a preset angle, the detection radar is controlled to perform deep liveness detection on the position interval.

[0032] During the preliminary liveness detection, the detection radar's detection accuracy for the location interval where the liveness features are located may not be optimal. Therefore, when confirming the location interval of the liveness features, the ceiling screen is rotated to a preset angle corresponding to the location interval, and the detection radar is controlled again to perform deep liveness detection on the location interval. The location interval is then tested again with better pop-up window accuracy to further confirm whether there are liveness features in the location interval.

[0033] Step S500: When the depth detection result indicates that there are living features in the car, a first alarm signal is output.

[0034] When the depth detection result also shows that there are living features, the first alarm signal is output to remind people outside the car or the car owner that there are people in the car, so as to pay attention to unlocking the car, thereby preventing people from being forgotten in the car and improving car safety.

[0035] In the embodiment of the present application, by setting the detection radar on the rotatable ceiling screen, the detection area of ​​the detection radar can be changed by rotating the ceiling screen, so that a single detection radar can detect the entire interior space of the car, thereby reducing the cost of liveness detection of the car. When the car is in the working condition of the car being electrically locked, the detection radar is first controlled to perform a preliminary liveness detection on the car. When the preliminary detection result shows that there are liveness features, the position interval of the liveness features is determined according to the current rotation angle of the ceiling screen, and then the ceiling screen is controlled to rotate to the preset angle with the best detection accuracy of the detection radar, and the detection radar is controlled to perform a deep liveness detection on the position interval. When the deep detection result also shows that there are liveness features, a first alarm signal is output to remind the owner of the safety of the people in the car. In this way, the accuracy of the car's liveness detection can be effectively improved, and it can be accurately judged whether there are still people inside the car after the car is electrically locked, thereby improving the safety of the car being electrically locked.

[0036] In some embodiments, Figure 2 As shown, the liveness detection method also includes: Step S600: When the preliminary detection result or the depth detection result shows that there is no living feature in the car, the ceiling screen is controlled to rotate from the current rotation angle to a preset angle step.

[0037] The preset angle step may be predetermined according to the rotatable range of the ceiling screen and the detection range of the detection radar. After the ceiling screen rotates with the preset angle step, the current detection range of the detection radar and the detection range before the rotation may partially overlap.

[0038] Step S700, in response to the ceiling screen completing the rotation in steps of a preset angle, the detection radar is controlled again to perform preliminary liveness detection on the car until the ceiling screen rotates from a closed state to a fully open state or the depth detection result indicates that there are live features in the car.

[0039] The preliminary detection result is that there is no living feature in the car, which means that there is no living feature in the area detected by the detection radar at this time. Therefore, the ceiling screen is controlled to rotate at a preset angle step. After the rotation, the detection area of ​​the detection radar changes, and then the detection radar performs a preliminary live detection on the new location area. If the preliminary detection result is still that there is no living feature, it continues to rotate at a preset angle step, and performs a preliminary live detection on the new location area again. If the preliminary detection result is that there is no living body each time, the ceiling screen can rotate from the closed state to the fully open state to complete the live detection of each area in the car. If the preliminary detection result is that there is a living body, execute steps S200-S500. If the depth detection result is that there is no living body, it is also rotated at a preset angle step to perform live detection on the new area. If the depth liveness detection result is that there is a living body, a first alarm signal is issued to stop the liveness detection of the car.

[0040] See also Figure 3 , Figure 3 The figure shows the detection area of ​​the detection radar when the ceiling screen in the embodiment of the present application is partially rotated. Figure 3 For example, when the car is in the power-off unlocking state, the ceiling screen is first in the closed state. At this time, the detection area of ​​the detection radar is Figure 3In the area L0 in the image, the detection radar performs preliminary liveness detection on the area L0. When the liveness feature is detected in the area L0, the position interval of the liveness feature is determined, the ceiling screen rotates to the preset angle corresponding to the position interval, and the detection radar performs deep liveness detection on the position interval. When the depth detection result still shows that the liveness feature exists, the first alarm signal is output. If it is detected that there is no liveness feature in the area L0, or the depth detection result shows that there is no liveness feature, the ceiling screen rotates to the next position with a preset angle step. At this time, the detection area of ​​the detection radar is the area L1 (not shown in the figure), and the detection radar performs preliminary liveness detection and / or deep liveness detection on the area L1. When there is no liveness feature in the preliminary detection result or the depth result corresponding to the area L1, the ceiling screen continues to rotate to the next position with a preset angle step, so that the detection radar performs preliminary liveness detection and deep liveness detection on the next detection area. When no liveness is detected in each area, the execution is repeated until the ceiling screen rotates to the fully open state. When the ceiling screen rotates to the fully open state, the detection area of ​​the detection radar is the area Ln.

[0041] It can be understood that when the ceiling screen rotates from the closed state to the fully open state, the detection range of the detection radar moves from the rear area of ​​the car to the front area of ​​the car. In this way, the detection radar can detect the front area of ​​the car from the rear area of ​​the car, realizing complete liveness detection of the car.

[0042] Of course, in some other embodiments, during the process of the ceiling screen rotating from a closed state to a fully open state, the detection range of the detection radar may also move from the front area of ​​the car to the rear area of ​​the car.

[0043] In some embodiments, the liveness detection method may further include: when the preliminary detection result indicates that there are liveness features in the car, outputting a second alarm signal, wherein the second alarm signal is different from the first alarm signal.

[0044] It can be understood that the first alarm signal is used to be sent to the mobile terminal paired with the car, so that the mobile terminal generates an alarm message according to the first alarm signal. The second alarm signal is used to control the external lighting system of the car (such as the turn signal) to flash the alarm and / or control the buzzer of the car to sound the alarm. That is to say, when the detection radar detects the presence of live features in the car during the preliminary liveness detection, it controls the turn signal of the car to flash or the buzzer to sound, which can remind the owner who has not gone far or other people nearby that there are live features in the car and they need to pay attention to safety. When the live features are detected in the car during the deep liveness detection, the first alarm signal is output to the mobile terminal associated with the car to remind the user of the mobile terminal that there are live features in the car and to unlock the car.

[0045] In some embodiments, Figure 4As shown, the liveness detection method may further include: Step S800, looking up the correspondence table between the detection range of the detection radar and the rotation angle of the ceiling screen.

[0046] It can be understood that the corresponding relationship table can be obtained by continuously adjusting the rotation angle of the ceiling screen during the car testing phase, detecting that when the detection radar detects a position, the ceiling screen changes different rotation angles, detecting the detection wave intensity of the detection radar at each rotation angle, and recording the rotation angle at which the detection wave intensity is the strongest at this position. After recording the position, adjust the ceiling screen with a larger rotation angle, and then change the detection position of the detection radar, and record the rotation angle at which the detection wave intensity is the strongest at the detection position again, and rotate the ceiling screen from the closed state to the fully open state to generate a complete corresponding relationship table. Specifically, during the pre-factory test, the detection radar can detect, for example, the left seat in the back row by adjusting the rotation angle of the ceiling screen, and the detection radar emits a detection wave after each adjustment of the position of the detection radar. The reflected energy wave at each position of the left seat in the back row that the detection radar can detect is recorded, and the corresponding ceiling screen rotation angle when the reflected energy wave is the strongest is used as the preset angle of the left seat in the back row, and recorded in the corresponding relationship table. In other spaces of the car, the corresponding preset angles are also obtained in this way and recorded in the corresponding relationship table.

[0047] Step S900: determine a preset angle according to the position interval currently detected by the detection radar.

[0048] According to the correspondence table and the position interval, the angle of the ceiling screen corresponding to the best detection accuracy of the detection radar in the position interval can be confirmed, and then the preset angle can be determined.

[0049] Specifically, if the reflected energy wave of the detection radar is Q, Q=a log10(R)+b, where R=Tn c, where a, b, and c are proportional parameters, Tn is the motion trajectory of the ceiling screen, and R is the target distance from the detection radar to the target position. The reflected energy wave Q is inversely proportional to the target distance R. The smaller the target distance R, the larger the reflected energy wave Q and the more accurate the detection accuracy.

[0050] Of course, in some embodiments, during the actual liveness detection process of a car, the ceiling screen can be rotated and fine-tuned with an angle step that is smaller than the preset angle step each time a deep liveness detection is performed. The reflected energy wave is obtained each time the fine-tuning is performed. After multiple fine-tunings, the maximum corresponding rotation angle of the reflected energy wave is obtained, and the corresponding relationship table is updated with the rotation angle.

[0051] See also Figure 5The embodiment of the present application further provides a vehicle domain controller 10, comprising a memory 110 and a processor 120. The memory 110 is used to store a computer program. The processor 120 is used to implement the above-mentioned liveness detection method when executing the computer program.

[0052] See also Figure 6 The embodiment of the present application also provides a car 100, including a car domain controller 10 and a ceiling screen 20. The ceiling screen 20 is rotatably arranged on the inner top of the car 100. A detection radar 30 is arranged on the ceiling screen 20. The car domain controller 10 is communicatively connected with the ceiling screen 20 and the detection radar 30.

[0053] When the car 100 is in the state of the electric lock, the car domain controller 10 sends a first detection instruction to the detection radar 30, so that the detection radar 30 performs a preliminary liveness detection on the car 100 according to the first detection instruction. After the preliminary liveness detection, the detection radar 30 outputs a preliminary detection signal according to the received reflected energy wave. The car domain controller 10 receives the preliminary detection signal output by the detection radar 30.

[0054] When the preliminary detection signal indicates the presence of live features and the ceiling screen 20 rotates to a preset angle, the vehicle domain controller 10 sends a second detection instruction to the detection radar 30, so that the detection radar 30 performs deep live detection on the vehicle 100 according to the second detection instruction. Among them, the detection radar 30 has the best live detection accuracy for the position interval when the ceiling screen 20 is at a preset angle. After the detection radar 30 performs deep live detection, it will also output a depth detection signal based on the received reflected energy wave.

[0055] The automobile domain controller 10 receives the depth detection signal output by the detection radar 30 , and outputs a first alarm signal when the depth detection signal indicates that there are living features in the automobile 100 .

[0056] See also Figure 7 , Figure 7 FIG. 2 shows a schematic diagram of the structure of the ceiling screen 20 and the detection radar 30 provided in the embodiment of the present application. Figure 7 As shown, the detection radar 30 is embedded in the back shell 21 of the ceiling screen 20. Specifically, the detection radar 30 is embedded on the central axis of the back shell 21 of the ceiling screen 20. For example, the back shell 21 of the ceiling screen 20 is provided with a groove 210, and the detection radar 30 is embedded in the groove 210.

[0057] Of course, in some other embodiments, the detection radar 30 can also be installed at other positions of the ceiling screen 20, for example, on both sides of the back shell 21 of the ceiling screen 20, the top / bottom of the screen, etc. The embodiments of the present application are not limited to this. As long as it is set on the ceiling screen 20, its detection area can be changed with the rotation of the ceiling screen 20.

[0058] In some embodiments, the ceiling screen 20 is communicatively connected to the detection radar 30, and the ceiling screen 20 is used to receive a preliminary detection signal. When the preliminary detection signal indicates the presence of a living feature, the ceiling screen 20 rotates to a preset angle. When the ceiling screen 20 rotates to a preset angle, the ceiling screen 20 sends an indication signal to the vehicle domain controller 10. The indication signal indicates that the ceiling screen 20 has rotated to a preset angle. When the preliminary detection signal indicates that there is no living feature in the car 100, the ceiling screen 20 rotates from the current rotation angle to a preset angle step. In this way, the rotation of the ceiling screen 20 is achieved.

[0059] Of course, in some other embodiments, only the preliminary detection signal may be sent to the vehicle domain controller 10 , and the vehicle domain controller 10 controls the rotation of the ceiling screen 20 according to the preliminary detection signal.

[0060] like Figure 8 As shown, the car 100 may also include a vehicle-mounted T-BOX 40, which is connected to the car domain controller 10 for communication, and is used to receive a first alarm signal and send the first alarm signal to a mobile terminal 200 paired with the car 100, so that the mobile terminal 200 generates an alarm message according to the first alarm signal. The first alarm signal is sent to the mobile terminal 200 through the vehicle-mounted T-BOX 40, so that the user can timely understand the presence of living features in the car 100, thereby improving safety.

[0061] The embodiment of the present application further provides a computer storage medium, which stores a computer program. When the computer program is executed by the automobile domain controller 10, the automobile domain controller 10 executes the above-mentioned liveness detection method.

[0062] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer storage medium or transmitted through a computer storage medium. The computer instructions can be transmitted from a website site, a computer, a server or a data center to another website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer storage medium can be any available medium that can be accessed by the computer or a data storage device such as a server or a data center that contains one or more available media integrated. Available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media (eg, digital versatile discs (DVD)), or semiconductor media (eg, solid state disks (SSD)), etc.

[0063] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes. In the absence of conflict, the technical features in this embodiment and the implementation scheme can be combined arbitrarily.

[0064] The above embodiments are merely preferred embodiments of the present application and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements made to the technical solutions of the present application by ordinary technicians in this field should fall within the protection scope of the claims of the present application.

Claims

1. A method for detecting a living body, applied to a car, wherein a rotatable ceiling screen is provided on the inner top of the car, characterized in that: The ceiling screen is provided with a detection radar, and the living body detection method comprises: When the vehicle is in the electric lock down state, controlling the detection radar to perform preliminary liveness detection on the vehicle; In response to the preliminary detection result indicating that a living feature exists in the automobile, determining a position interval of the living feature according to a current rotation angle of the ceiling screen; The ceiling screen is controlled to rotate to a preset angle according to the position interval; wherein the detection radar has the best accuracy of live body detection in the position interval when the ceiling screen is at the preset angle; In response to the ceiling screen rotating to the preset angle, controlling the detection radar to perform deep liveness detection on the position interval; When the depth detection result indicates that there are living features in the car, a first alarm signal is output.

2. The method for detecting a living body according to claim 1, wherein: Also includes: When the preliminary detection result or the depth detection result indicates that there is no living feature in the car, controlling the ceiling screen to rotate from the current rotation angle to a preset angle step length; In response to the ceiling screen completing the rotation in the preset angle step, the detection radar is controlled again to perform preliminary liveness detection on the car until the ceiling screen rotates from a closed state to a fully open state or the depth detection result indicates that there are live features in the car.

3. The method for detecting a living body according to claim 2, wherein: During the process of the ceiling screen rotating from the closed state to the fully opened state, the detection range of the detection radar moves from the rear area of ​​the car to the front area of ​​the car.

4. The method for detecting a living body according to any one of claims 1 to 3, characterized in that: Also includes: When the preliminary detection result indicates that there are living features in the car, a second alarm signal is output; wherein the second alarm signal is different from the first alarm signal.

5. The method for detecting a living body according to claim 4, wherein: The first alarm signal is used to be sent to a mobile terminal paired with the car, so that the mobile terminal generates an alarm message according to the first alarm signal; the second alarm signal is used to control the lighting system of the car to flash an alarm and / or control the buzzer of the car to sound an alarm.

6. The method for detecting a living body according to claim 1, wherein: Also includes: Refer to the corresponding relationship table between the detection range of the detection radar and the rotation angle of the ceiling screen; The preset angle is determined according to the position interval currently detected by the detection radar.

7. An automotive domain controller, characterized in that: include: Memory for storing computer programs; A processor, configured to implement the liveness detection method according to any one of claims 1 to 6 when executing the computer program.

8. A car, characterized in that: It includes a ceiling screen and a car domain controller, wherein the ceiling screen is rotatably arranged on the inner top of the car, a detection radar is arranged on the ceiling screen, and the car domain controller is communicatively connected with the ceiling screen and the detection radar; the car domain controller is used for: When the vehicle is in a state of being electrically locked, sending a first detection instruction to the detection radar, so that the detection radar performs preliminary liveness detection on the vehicle according to the first detection instruction; Receiving a preliminary detection signal output by the detection radar; When the preliminary detection signal indicates the presence of a live feature and the ceiling screen rotates to a preset angle, a second detection instruction is sent to the detection radar, so that the detection radar performs deep live detection on the vehicle according to the second detection instruction; wherein, when the ceiling screen is at the preset angle, the detection radar has the best live detection accuracy for the position interval corresponding to the preset angle; The depth detection signal output by the detection radar is received, and when the depth detection signal indicates that there are living features in the car, a first alarm signal is output.

9. The automobile according to claim 8, characterized in that The ceiling screen is connected to the detection radar for communication, and the ceiling screen is used for: receiving the preliminary detection signal; When the preliminary detection signal indicates the presence of a living feature, rotating to the preset angle; When the screen is rotated to the preset angle, an indication signal is sent to the vehicle domain controller; the indication signal indicates that the ceiling screen has been rotated to the preset angle; When the preliminary detection signal indicates that there is no living feature in the car, the ceiling screen rotates from the current rotation angle to a preset angle step.

10. The automobile according to claim 8 or 9, characterized in that: It also includes a vehicle-mounted T-BOX, which is communicatively connected to the vehicle domain controller, and is used to receive the first alarm signal and send the first alarm signal to a mobile terminal paired with the vehicle, so that the mobile terminal generates alarm information according to the first alarm signal.

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