An occupant level determination method

Abstract

The present application proposes an occupant level determination method. First, in response to a drive signal, after the drive signal is issued, a first pressure difference sequence is obtained at a first period. The first pressure difference sequence includes a plurality of first pressure differences, and the first pressure difference is the difference between the airbag pressure and the ambient pressure. The first pressure difference sequence is traversed within a first preset duration, and according to a level strategy table, a first level sequence is obtained. The first level sequence includes a plurality of pressure difference levels, and the level strategy table stores a plurality of pressure differences and the pressure difference levels corresponding to the pressure differences. All the pressure difference levels in the first level sequence are judged to obtain a first target level. This solution provides a basis for the working states of the in-vehicle safety functions and comfort functions associated therewith according to different determination levels, improving the safety and comfort of occupants of different weights when riding.

Description

Technical Field

[0001] This application relates to the technical field of automobiles, and particularly relates to a method for determining occupant level. Background Art

[0002] With the development of the automotive industry and the construction of highways, automobiles are becoming more and more common, and the driving speed of automobiles is getting faster and faster. Safety accidents occur frequently. Safety devices such as airbags in automobiles emerge as the times require. Safety functions such as occupant restraint systems and locking mechanisms in automobiles, as well as comfort functions such as seat adjustment, flank support, and lumbar support during riding, are also gradually improving. However, the weights of occupants are inconsistent, and the safety functions and comfort functions cannot change their working states according to the weight of the occupants, resulting in reduced safety and comfort. Summary of the Invention

[0003] In view of the above defects or deficiencies in the prior art, this application aims to provide a method for determining occupant level, a terminal device, and a storage medium.

[0004] In a first aspect, this application proposes a method for determining occupant level, including the following steps:

[0005] S101. Respond to a driving signal, where the driving signal at least includes an occupancy signal and a door closed signal;

[0006] S102. Obtain a first pressure difference sequence at a first acquisition period, where the first pressure difference sequence includes a plurality of first pressure differences, and the first pressure difference is the difference between the airbag pressure and the ambient pressure;

[0007] S103. Traverse the first pressure difference sequence within a first preset duration, and obtain a first level sequence according to a level strategy table, where the first level sequence includes a plurality of pressure difference levels; the level strategy table stores a plurality of pressure differences and the pressure difference levels corresponding to the pressure differences;

[0008] S104. Judge all the pressure difference levels in the first level sequence to obtain a first target level.

[0009] According to the technical solution provided by the embodiment of this application, after step S104, the following steps are further included:

[0010] S201. Set a target vehicle device;

[0011] S202. Based on the target vehicle device, call a working state database to obtain a first state model; the working state database at least includes: vehicle devices and state models corresponding to the vehicle devices; the first state model is used to represent the corresponding relationship between the pressure difference level and the working state;

[0012] S203. Input the first target level into the first state model to obtain the working state of the target vehicle equipment.

[0013] According to the technical solution provided by the embodiment of the present application, after S104, the following steps are further included:

[0014] S301. Set a second preset duration;

[0015] S302. The second preset duration includes a plurality of the first preset durations, and each of the first target levels obtained from each of the first preset durations forms a second level sequence;

[0016] S303. When it is determined that any two of the first target levels in the second level sequence are not equal, calculate the occupancy ratios of each of the first target levels in the second level sequence to obtain a first occupancy ratio sequence;

[0017] S304. Obtain a second target level based on the first occupancy ratio sequence, where the second target level is the first target level corresponding to the largest occupancy ratio in the first occupancy ratio sequence. When it is the second target level, input the second target level into the first state model to obtain the working state.

[0018] According to the technical solution provided by the embodiment of the present application, after step S104, the following steps are further included:

[0019] S401. Set a determination threshold;

[0020] S402. Determine whether the first pressure difference after the first preset duration is not equal to the determination threshold. If so, execute step S403;

[0021] S403. Set a determination duration;

[0022] S404. Calculate the differences between the multiple first pressure differences obtained within the determination duration and the determination threshold, and take the absolute values to obtain a plurality of first absolute values;

[0023] S405. Determine whether the plurality of first absolute values are gradually decreasing. If so, execute step S410. If not, execute step S406;

[0024] S406. Set an airbag leakage rate threshold;

[0025] S407. Calculate the average airbag leakage rate corresponding to the first pressure difference within the determination duration;

[0026] S408. Determine whether the average airbag leakage rate is greater than the airbag leakage rate threshold. If so, execute step S409. If not, execute step S410;

[0027] S409. Send an airbag leakage alarm and maintain the first target level;

[0028] S410. Return to execute steps S102 - S104.

[0029] According to the technical solution provided by the embodiment of the present application, before step S410, the following steps are further included:

[0030] S501. Determine whether the vehicle seat is in an occupied state. If so, execute step S502; if not, execute step S503;

[0031] S502. Execute step S410;

[0032] S503. Cancel the determination result of the occupant level.

[0033] According to the technical solution provided by the embodiment of the present application, before step S501, the following steps are further included:

[0034] S601. Repeatedly determine whether the vehicle seat is in an occupied state. If so, execute step S602; if not, execute step S603;

[0035] S602. Execute step S407;

[0036] S603. Execute step S501.

[0037] According to the technical solution provided by the embodiment of the present application, the following steps are further included:

[0038] S801. Receive the vehicle shutdown signal;

[0039] S802. Determine whether the vehicle seat is in an occupied state. If so, maintain the first target level; if not, adjust the air pressure in the airbag to be equal to the ambient air pressure.

[0040] According to the technical solution provided by the embodiment of the present application, the following steps are further included:

[0041] S801. Set an occupancy threshold;

[0042] S802. Determine whether the first pressure difference is greater than or equal to the occupancy threshold. If so, send an occupancy signal; if not, send a non - occupancy signal.

[0043] In a second aspect, the present application proposes a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: when the processor executes the computer program, the steps of the occupant level determination method as described above are implemented.

[0044] In a third aspect, the present application provides a computer-readable storage medium having a computer program, characterized in that when the computer program is executed by a processor, the steps of the occupant level determination method described above are implemented.

[0045] In summary, the present application provides an occupant level determination method. First, in response to a driving signal, after the driving signal is sent, a first pressure difference sequence is obtained at a first period. The first pressure difference sequence includes a plurality of first pressure differences, and the first pressure difference is the difference between the airbag pressure and the ambient pressure. The first pressure difference sequence is traversed within a first preset duration, and according to a level policy table, a first level sequence is obtained. The first level sequence includes a plurality of pressure difference levels. The level policy table stores a plurality of pressure differences and the pressure difference levels corresponding to the pressure differences. All the pressure difference levels in the first level sequence are judged to obtain a first target level. This solution provides a basis for the working states of the in-vehicle safety functions and comfort functions associated therewith according to different determination levels, improving the safety and comfort of occupants of different weights when riding. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a flowchart of an occupant level determination strategy provided by an embodiment of the present application;

[0047] Figure 2 is a schematic structural diagram of a computer system of a terminal device or a server;

[0048] Figure 3 is a diagram of the change in air pressure value after the fluctuation of the first air pressure value in an embodiment of the present application;

[0049] Figure 4 is a diagram of the change in air pressure value after the airbag leaks or explodes in an embodiment of the present application.

[0050] The text annotations in the figure are represented as:

[0051] 701, CPU; 702, ROM; 703, RAM; 704, bus; 705, I / O interface; 706, input part; 707, output part; 708, storage part; 709, communication part; 710, driver; 711, removable medium. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] The present application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention and are not intended to limit the invention. In addition, it should be noted that for the sake of description, only parts related to the invention are shown in the drawings.

[0053] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present application in detail with reference to the accompanying drawings and in combination with the embodiments.

[0054] Embodiment 1

[0055] As mentioned in the background art, in view of the problems in the prior art, the present application proposes an occupant level determination method, including:

[0056] S101. Respond to a driving signal, where the driving signal at least includes an occupancy signal and a door closed signal;

[0057] S102. Obtain a first pressure difference sequence at a first acquisition period, where the first pressure difference sequence includes a plurality of first pressure differences, and the first pressure difference is the difference between the airbag pressure and the ambient pressure;

[0058] S103. Traverse the first pressure difference sequence within a first preset duration, and obtain a first level sequence according to a level policy table. The first level sequence includes a plurality of pressure difference levels; the level policy table stores a plurality of pressure differences and the pressure difference levels corresponding to the pressure differences;

[0059] S104. Judge all the pressure difference levels in the first level sequence to obtain a first target level.

[0060] Among them, referring to Figure 1 the occupant level determination method shown in, when the occupant opens the door and occupies the seat, the module receives the door closed signal and starts the determination. Set a first acquisition period of 3 - 10 s, and the first acquisition period is distributed throughout the determination process, not limited to the first minute when the occupant just takes a seat. Every 0.1 - 1 second within the first acquisition period, measure and obtain the pressure value inside the airbag of the vehicle seat. Obtain a plurality of pressure values during the entire acquisition period, and measure the atmospheric pressure. Calculate the difference between the pressure value inside the airbag and the atmospheric pressure. These pressure differences form a first pressure difference sequence. Use each of the first pressure difference sequences to match with a pre-set level policy table. The level policy table covers the weight ranges of 50% of children, 50% of adult women, and 50% of adult men. By comparing the first pressure difference sequence with the level policy table, find the corresponding pressure level in the level policy table to obtain a first level sequence. Judge that the level with the largest proportion in the first level sequence is the first target level. The first target level is associated with safety functions such as the occupant restraint system, locking mechanism, or airbag deployment system in the vehicle when the occupant is sitting, and comfort functions such as seat adjustment, side wing support, and lumbar massage of the seat. Adjust the working states of the safety functions and / or comfort functions according to different target levels to improve the safety and comfort of the vehicle. This method selects the method of air pressure detection, and the cost is relatively low.

[0061] In a preferred embodiment, the following steps are further included:

[0062] S201. Set the target vehicle equipment;

[0063] S202. Based on the target vehicle equipment, call the working state database to obtain a first state model; the working state database at least includes: vehicle equipment and a state model corresponding to the vehicle equipment; the first state model is used to represent the corresponding relationship between the pressure difference level and the working state;

[0064] S203. Input the first target level into the first state model to obtain the working state of the target vehicle equipment.

[0065] Among them, the target vehicle equipment includes safety functions such as the occupant restraint system, locking mechanism or airbag deployment system of the whole vehicle, and also includes comfort functions such as seat adjustment, side wing support, lumbar support, and massage for passengers. The working state database is at least associated with one of them. According to steps S102 - S104, the first target level is obtained, and the first target level is compared with the working state database to obtain the first state model, and the first state model is the basis for the working states of the safety function and the comfort function.

[0066] In a preferred embodiment, after step S104, the following steps are further included:

[0067] S301. Set a second preset duration;

[0068] S302. The second preset duration includes a plurality of the first preset durations, and each first target level obtained from each first preset duration forms a second level sequence;

[0069] S303. When it is determined that any two of the first target levels in the second level sequence are not equal, calculate the proportion of each first target level in the second level sequence to obtain a first proportion sequence;

[0070] S304. Obtain a second target level based on the first proportion sequence, where the second target level is the first target level corresponding to the largest proportion value in the first proportion sequence. When it is the second target level, input the second target level into the first state model to obtain the working state.

[0071] Among them, after the first preset duration, a second preset duration is set, and the set second preset duration is longer than the first preset duration, that is, the second preset duration can include multiple first preset durations. Multiple first target levels can be obtained from the multiple first preset durations in the second preset duration. These first target levels form a second-level sequence. When the first target levels in the formed second-level sequence are not all the same, by calculating the proportion of each first target level in the entire second-level sequence, a first proportion sequence composed of the proportion values corresponding to each first target level is obtained. The first target level corresponding to the maximum value in the first proportion sequence is the second target level. The utilization method of the second target level is the same as that of the first target level and is input into the first state model to obtain the working states of the vehicle safety functions and comfort functions associated with the vehicle. Since the time of the entire determination process is short and the determination is performed multiple times, obtaining the second target level can reduce the determination error.

[0072] In a preferred embodiment, after step S104, the following steps are further included:

[0073] S401 Set a determination threshold;

[0074] S402 Determine whether the first pressure difference after the first preset duration is not equal to the determination threshold. If so, execute step S403;

[0075] S403 Set a determination duration;

[0076] S404 Calculate the differences between the multiple first pressure differences obtained within the determination duration and the determination threshold, and take the absolute values to obtain multiple first absolute values;

[0077] S405 Determine whether the multiple first absolute values are gradually decreasing. If so, execute step S410; if not, execute step S406;

[0078] S406 Set an airbag leakage rate threshold;

[0079] S407 Calculate the average first airbag leakage rate corresponding to the first pressure difference within the determination duration;

[0080] S408 Determine whether the average first airbag leakage rate is greater than the airbag leakage rate threshold. If so, execute step S409; if not, execute step S410;

[0081] S409 Issue an airbag leakage alarm and maintain the first target level;

[0082] S410 Return to execute steps S102 - S104.

[0083] Among them, the determination threshold value can be the average value of the pressure differences corresponding to the first target level in the first pressure difference sequence. Since the sitting posture of the occupant changes or the airbag is damaged, the pressure difference will change. Calculate the difference between the first pressure difference value and the determination threshold value, and take the absolute value to obtain a plurality of first absolute values. Under normal circumstances, the plurality of first absolute values should be equal. If they are not equal, there may be the following reasons: the sitting posture of the occupant changes, or the airbag leaks or explodes. If it is caused by the change of the sitting posture, then as Figure 3 shown, observe the change trend of the first absolute value within the determination duration. The determination duration can be set to 5 minutes. If the first absolute value first gradually increases and then gradually decreases within the determination duration, it is determined that the fluctuation is caused by the change of the occupant's sitting posture. At this time, the occupant level after the change of the member's sitting posture needs to be re-determined, and the states of the safety function and the comfort function need to be reconfirmed, and then return to execute steps S102 - S104; if the first absolute value gradually increases but does not decrease within the determination duration, it is determined that the airbag may leak or explode. If leakage or explosion occurs, it is necessary to detect the average leakage rate of the airbag to determine whether the airbag has actually leaked. First, the airbag leakage rate threshold is calculated by a 20% decrease in the pressure difference within 5 minutes. Here, the pressure difference refers to the pressure difference at the beginning of the 5-minute determination duration. When the decrease rate of the pressure difference in the airbag is greater than the airbag leakage rate threshold, as Figure 4 shown, it is possible that the airbag has leaked or even exploded, and an alarm for airbag leakage needs to be issued, and the first target level is used as the final determination level. If the average leakage rate of the first airbag is not greater than the airbag leakage rate threshold, it is possible that a slight vibration of the vehicle has caused a change in the detection value. At this time, to prevent incorrect determination results, return to execute steps S102 - S104 to form a more accurate judgment and real-time monitoring of the working state of the detection airbag. Having the step of detecting gas leakage can improve the efficiency of airbag fault identification of the system.

[0084] In a preferred embodiment, before step S410, the following steps are further included:

[0085] S501. Determine whether the vehicle seat is in an occupied state. If it is, execute step S502; if not, execute step S503;

[0086] S502. Execute step S410;

[0087] S503. Cancel the determination result of the occupant level.

[0088] Among them, by determining whether the seat is occupied, the usage status of the seat is monitored. During driving and use, after detecting a change in the occupancy status, a re - determination is required to ensure the detection accuracy. And when it is detected that the seat is not occupied, the occupant level determination can be cancelled.

[0089] In a preferred embodiment, before step S501, the following steps are further included:

[0090] S601. Repeatedly determine whether the vehicle seat is in an occupied state. If so, execute step S602; if not, execute step S603;

[0091] S602. Execute step S407;

[0092] S603. Execute step S501.

[0093] Among them, for the continuous determination of whether the seat is occupied, during the continuous detection process, if it is detected that the first pressure difference changes and it is not caused by a change in sitting posture, that is, detect whether the airbag leaks. When it is detected that there is no leakage, then determine the occupancy status of the vehicle seat. If it is in an occupied state, return to detect whether the airbag leaks, forming a cycle. During the continuous process of the cycle, when an unoccupied signal is output, then execute step S501. If it is continuously determined as an un - leakage signal and an occupied signal during the cycle process, then maintain the cycle and keep determining whether the airbag leaks and whether the vehicle seat is occupied.

[0094] In a preferred embodiment, the following steps are further included:

[0095] S701. Receive the signal of the vehicle turning off;

[0096] S702. Determine whether the vehicle seat is in an occupied state. If so, maintain the first target level; if not, adjust the air pressure in the airbag to be equal to the ambient air pressure.

[0097] Among them, when the vehicle stalls, the determination stops. However, considering that the occupant may not leave the seat immediately after the vehicle stalls, the original determination level is still maintained. After the occupant leaves the seat and opens the door to get out of the vehicle, the system makes a correction to adjust the air pressure in the airbag to be consistent with the outside atmospheric pressure, making the ambient atmospheric pressure equal to the airbag pressure, and being able to adapt to different atmospheric pressure environments for work. Therefore, this method can be applied to different altitudes such as mountains, plateaus, low altitudes, and depressions. When the door - opening signal is received again, the system correction stops.

[0098] In a preferred embodiment, the following steps are further included:

[0099] S801. Set the occupancy threshold;

[0100] S802. Determine whether the first pressure difference is greater than or equal to the occupancy threshold. If so, send an occupancy signal; if not, send a non-occupancy signal.

[0101] Optionally, the occupancy threshold is 10 kg - 20 kg. In this embodiment, 12 kg is specifically selected. This pressure threshold is determined according to the weight of ordinary people. When the obtained pressure value is greater than 12 kg, it is in the occupancy state and an occupancy signal is obtained. When it is less than 12 kg, it is in the non-occupancy state and a non-occupancy signal is obtained.

[0102] Embodiment 2

[0103] The same parts as those in Embodiment 1 will not be elaborated. The difference between this embodiment and Embodiment 1 is that a terminal device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The following refers to Figure 2 FIG. which shows a schematic structural diagram of a computer system 700 of a terminal device or a server suitable for implementing the embodiments of the present application.

[0104] As Figure 2 shown, the computer system 700 includes a central processing unit (CPU) 701, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 702 or the program loaded from the storage section 708 into the random access memory (RAM) 703. In the RAM 703, various programs and data required for the operation of the system 700 are also stored. The CPU 701, ROM 702, and RAM 703 are connected to each other via a bus 704. The input / output (I / O) interface 705 is also connected to the bus 704.

[0105] The following components are connected to the I / O interface 705: an input section 706 including a keyboard, a mouse, etc.; an output section 707 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage section 708 including a hard disk, etc.; and a communication section 709 including a network interface card such as a LAN card, a modem, etc. The communication section 709 performs communication processing via a network such as the Internet. The drive 710 is also connected to the I / O interface 705 as needed. A removable medium 711, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 710 as needed so that the computer program read from it can be installed into the storage section 708 as needed.

[0106] Specifically, according to the embodiments of the present disclosure, the process described above with reference to Figure 1 can be implemented as a computer software program. For example, the embodiments of the present disclosure include a computer program product, which includes a computer program tangibly embodied on a machine-readable medium, and the computer program includes instructions for performingFigure 1 The program code of the method. In such an embodiment, the computer program can be downloaded and installed from a network through the communication part 709, and / or installed from the removable medium 711.

[0107] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, as well as combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0108] Embodiment 3

[0109] The same parts as those in Embodiment 2 will not be elaborated here. The difference between this embodiment and Embodiment 2 is that a computer-readable storage medium is also provided. The computer-readable storage medium can be the computer-readable storage medium included in the device described in the above embodiments; or it can exist independently and be a computer-readable storage medium not assembled into the device. The computer-readable storage medium stores one or more programs, and the one or more processors are used to execute the steps of the occupant level determination method described in Embodiment 1.

[0110] Specific examples are used in this article to elaborate on the principles and implementation manners of the present application. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present application. The above are only the preferred implementation manners of the present application. It should be noted that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principles of the present invention, several improvements, refinements, or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes, or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present application.

Claims

1. A method for determining the occupant level, characterized in that, It includes the following steps: S101. Respond to a driving signal, where the driving signal at least includes an occupancy signal and a door closing signal; S102. Obtain a first pressure difference sequence at a first acquisition period. The first pressure difference sequence includes a plurality of first pressure differences, and the first pressure difference is the difference between the airbag pressure and the ambient pressure; S103. Traverse the first pressure difference sequence within a first preset duration, and obtain a first level sequence according to a level policy table. The first level sequence includes a plurality of pressure difference levels; the level policy table stores a plurality of pressure differences and the corresponding pressure difference levels; S104. Judge all the pressure difference levels in the first level sequence to obtain a first target level; the first target level is the level with the largest proportion in the first level sequence; S201. Set a target vehicle device; S202. Based on the target vehicle device, call a working state database to obtain a first state model; the working state database at least includes: vehicle devices and the corresponding state models; the first state model is used to represent the corresponding relationship between the pressure difference level and the working state; S203. Input the first target level into the first state model to obtain the working state of the target vehicle device; the working state includes the safety function and / or comfort function of the vehicle.

2. The occupant level determination method according to claim 1, wherein After step S104, it further includes the following steps: S301. Set a second preset duration; S302. The second preset duration includes a plurality of the first preset durations, and the first target levels obtained from each of the first preset durations form a second level sequence; S303. When it is judged that any two of the first target levels in the second level sequence are not equal, calculate the proportion of each first target level in the second level sequence to obtain a first proportion sequence; S304. Obtain a second target level based on the first proportion sequence. The second target level is the first target level corresponding to the largest proportion value in the first proportion sequence. When it is the second target level, input the second target level into the first state model to obtain the working state.

3. The occupant level determination method according to claim 1, wherein, After step S104, it further includes the following steps: S401. Set a determination threshold; S402. Judge whether the first pressure difference after the first preset duration is not equal to the determination threshold. If so, execute step S403; S403. Set a determination duration; S404. Calculate the differences between the plurality of first pressure differences obtained within the determination duration and the determination threshold, and take the absolute values to obtain a plurality of first absolute values; S405. Judge whether the plurality of first absolute values gradually decrease. If so, execute step S410. If not, execute step S406; S406. Set an airbag leakage rate threshold; S407. Calculate the first average airbag leakage rate corresponding to the first pressure difference within the determination duration; S408. Judge whether the first average airbag leakage rate is greater than the airbag leakage rate threshold. If so, execute step S409. If not, execute step S410; S409. Issue an airbag leakage alarm and maintain the first target level; S410. Return to execute steps S102 - S104.

4. The occupant level determination method according to claim 3, characterized in that, Before step S410, the following steps are further included: S501. Determine whether the vehicle seat is in an occupied state. If so, execute step S502; if not, execute step S503; S502. Execute step S410; S503. Cancel the determination result of the occupant level.

5. The occupant level determination method according to claim 4, characterized in that, Before step S501, the following steps are further included: S601. Repeatedly determine whether the vehicle seat is in an occupied state. If so, execute step S602; if not, execute step S603; S602. Execute step S407; S603. Execute step S501.

6. The occupant level determination method according to claim 1, wherein The following steps are further included: S701. Receive the vehicle shutdown signal; S702. Determine whether the vehicle seat is in an occupied state. If so, maintain the first target level; if not, adjust the air pressure in the airbag to be equal to the ambient air pressure.

7. The occupant level determination method according to claim 1, characterized in that The following steps are further included: S801. Set an occupancy threshold; S802. Determine whether the first pressure difference is greater than or equal to the occupancy threshold. If so, issue an occupancy signal; if not, issue a non - occupancy signal.

8. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, it implements the steps of the occupant level determination method according to any one of claims 1 to 7.

9. A computer-readable storage medium having a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the occupant level determination method according to any one of claims 1 to 7.

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