Self-adaptive passenger safety airbag unfolding strategy generation system and method

Abstract

The invention discloses a self-adaptive passenger safety air bag unfolding strategy generation system which comprises a sensing observation module and a control decision module. The sensing observation module is used for acquiring existence state signals, weight and sitting height of a passenger corresponding to a front-row air bag and the distance between the passenger and an instrument in real time; when an airbag unfolding instruction is triggered, the control decision module generates an unfolding forbidding strategy if no passenger exists, triggers a standard airbag unfolding strategy or a secondary airbag unfolding strategy according to a comparison result of the body weight, the sitting height and a set range if the passenger exists, and optimizes a decision by combining distance comparison under specific conditions. The problem that an existing safety airbag cannot adaptively adjust a protection strategy according to the body type of a passenger is solved. According to the invention, the optimal protection of people with different body types is realized through real-time signal processing and a grading strategy, and the collision safety performance is obviously improved.

Description

Technical Field

[0001] The present invention relates to a vehicle safety system, and more particularly to a system and method for generating an adaptive passenger airbag deployment strategy. Background Art

[0002] Current passenger airbag systems in passenger vehicles generally utilize a standardized design. The core technical solution is that the airbag structure is developed based on a pre-set fixed configuration, typically optimized for average-sized adult occupants. The airbag is packaged in a single, folded-layer configuration within the instrument panel and fully secured within the airbag housing via rigid connections (such as bolts or clips). The system's triggering logic relies solely on the collision sensor and basic seat occupancy sensors (such as pressure pads or seatbelt buckle status) to determine whether to fire. When a vehicle collision is detected and the passenger seat is occupied, the airbag deploys fully in the pre-set fixed configuration and inflation pressure, creating a protective envelope covering the entire collision risk area. This airbag effectively enhances the safety of the passenger in a collision. It utilizes a single, folded-layer structure and is fully secured within the airbag housing via rigid connections (such as bolts). Upon activation, it inflates and deploys in a pre-set, single configuration.

[0003] Existing standardized solutions have significant limitations: they fail to adapt protection to the specific body types of occupants. The airbag's fixed deployment configuration and inflation characteristics are tailored to a specific body type (typically, a medium-sized adult male). For occupants whose body types significantly deviate from the pre-set standard (such as petite women or adolescents), airbag deployment can pose two risks: 1. Inadequate protection: For smaller occupants, the airbag's excessive coverage area shifts the initial contact position, preventing effective restraint of critical areas (such as the head); 2. Excessive injury: The airbag's impact force exceeds the tolerance threshold of smaller occupants, potentially causing secondary injuries such as excessive recoil of the neck and rib fractures. Furthermore, existing systems trigger protection based solely on a binary signal (occupied / unoccupied) without incorporating real-time occupant characteristics (such as weight distribution, seat height, and torso tilt). This crude approach fails to distinguish individual occupant differences, leading to a mismatch between protection strategies and actual risks. In particular, in scenarios where occupants are out of position (e.g., leaning forward to retrieve an object), fixed-configuration airbags can even exacerbate injuries.

[0004] In response to the above-mentioned defects, a dynamically adjustable airbag system with an adaptive airbag structure has been invented: an airbag module with a multi-stage deployment form is designed, and structural reorganization is achieved through a controllable failure mechanism (such as an explosive unlocking device or an electromagnetic latch). When it is necessary to adapt to small-sized occupants, the system triggers the failure of specific connection points, causing the airbag to deploy in a staged inflation mode, forming a smaller and more moderate contact pressure protection form. It includes a multi-source data fusion strategy: the integrated occupant monitoring system (OMS) obtains multi-dimensional parameters of the occupant (including body characteristics and sitting position) in real time, and generates a personalized protection strategy through a preset algorithm: when it is recognized that the occupant's body size is significantly smaller than the preset standard, the system automatically switches the airbag to an adaptive form; the inflation pressure and deployment timing are dynamically adjusted in combination with the occupant's out-of-position state to achieve on-demand protection, solving the body adaptability defect. Summary of the Invention

[0005] The purpose of the present invention is to provide an adaptive passenger airbag deployment strategy generation system. The present invention solves the body adaptability defect by designing a hierarchical folding airbag (such as a two-stage airbag structure) and achieving morphological switching through a controllable failure mechanism (such as a bursting bolt or an electromagnetic latch).

[0006] To achieve this objective, the present invention provides an adaptive passenger airbag deployment strategy generation system, which includes: The sensing and observation module is used to obtain in real time the presence status signal of the occupant corresponding to the front airbag, the weight of the occupant corresponding to the front airbag, the seat height of the occupant corresponding to the front airbag, and the distance between the occupant corresponding to the front airbag and the instrument panel; The control decision module is used to generate a strategy to prohibit airbag deployment when the airbag deployment command is triggered by a collision and the presence status signal of the front airbag corresponding to the occupant is no occupant; When the airbag deployment command is triggered by a collision, if the presence status signal of the front airbag corresponding to the occupant indicates that there is an occupant, the weight of the front airbag corresponding to the occupant is compared with the set weight range, and the sitting height of the front airbag corresponding to the occupant is compared with the set sitting height range. If the weight of the front airbag corresponding to the occupant is within the set weight range and the sitting height of the front airbag corresponding to the occupant is within the set sitting height range, the standard airbag deployment strategy is triggered; When the weight of the occupant corresponding to the current airbag is not within the set weight range and / or the sitting height of the occupant corresponding to the front airbag is not within the set sitting height range, the secondary airbag expansion and deployment strategy is triggered, and the distance between the occupant corresponding to the front airbag and the instrument is compared with the set occupant and instrument distance range. When the distance between the occupant corresponding to the current airbag and the instrument is within the instrument distance range, the secondary airbag expansion and deployment strategy is triggered.

[0007] In the above-mentioned adaptive passenger airbag deployment strategy generation system, when the distance between the passenger corresponding to the current airbag and the instrument is not within the instrument distance range, the airbag standard deployment strategy is triggered.

[0008] In the above-mentioned adaptive passenger airbag deployment strategy generation system, the standard airbag deployment strategy is: the main airbag is inflated and deployed, and the secondary airbag provided on the main airbag is not deployed.

[0009] In the above-mentioned adaptive passenger airbag deployment strategy generation system, the secondary airbag expansion and deployment strategy is to deploy the primary airbag and the secondary airbag simultaneously.

[0010] In the above-mentioned adaptive passenger airbag deployment strategy generation system, the secondary airbag expansion and deployment strategy is that the secondary airbag is deployed after a preset time of deployment of the main airbag.

[0011] In the above-mentioned adaptive passenger airbag deployment strategy generation system, the secondary airbag is sewn to the area of ​​the main airbag facing the occupant. The main airbag and the secondary airbag each have independent inflation space. The main airbag is connected to the gas generator through the main airbag switch, and the secondary airbag is connected to the gas generator through the secondary airbag switch. The working status of the main airbag switch, the secondary airbag switch and the gas generator is determined by the airbag deployment prohibition strategy, the airbag standard deployment strategy or the secondary airbag expansion deployment strategy.

[0012] In the above-mentioned adaptive passenger airbag deployment strategy generation system, when the airbag deployment strategy is prohibited, the primary airbag switch remains closed, the secondary airbag switch remains closed, and the gas generator does not operate.

[0013] In the above-mentioned adaptive passenger airbag deployment strategy generation system, when the airbag standard deployment strategy is used, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch remains closed.

[0014] In the above-mentioned adaptive passenger airbag deployment strategy generation system, when the secondary airbag expansion deployment strategy is used, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch is turned on at the same time.

[0015] In the above-mentioned adaptive passenger airbag deployment strategy generation system, when the secondary airbag expansion deployment strategy is implemented, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch is turned on after a preset time after the main airbag switch is turned on.

[0016] A method for generating an adaptive passenger airbag deployment strategy, comprising: Real-time acquisition of the presence status signal of the occupant corresponding to the front airbag, the weight of the occupant corresponding to the front airbag, the seat height of the occupant corresponding to the front airbag, and the distance between the occupant corresponding to the front airbag and the instrument panel; When the airbag deployment command is triggered due to a collision, if the occupant presence status signal corresponding to the front airbag is no occupant, a strategy for prohibiting airbag deployment is generated; When the airbag deployment command is triggered by a collision, if the presence status signal of the front airbag corresponding to the occupant indicates that there is an occupant, the weight of the front airbag corresponding to the occupant is compared with the set weight range, and the sitting height of the front airbag corresponding to the occupant is compared with the set sitting height range. If the weight of the front airbag corresponding to the occupant is within the set weight range and the sitting height of the front airbag corresponding to the occupant is within the set sitting height range, the standard airbag deployment strategy is triggered; When the weight of the occupant corresponding to the current airbag is not within the set weight range and / or the sitting height of the occupant corresponding to the front airbag is not within the set sitting height range, the secondary airbag expansion and deployment strategy is triggered, and the distance between the occupant corresponding to the front airbag and the instrument is compared with the set occupant and instrument distance range. When the distance between the occupant corresponding to the current airbag and the instrument is within the instrument distance range, the secondary airbag expansion and deployment strategy is triggered.

[0017] In the above-mentioned adaptive passenger airbag deployment strategy generation method, when the distance between the passenger corresponding to the current airbag and the instrument panel is not within the instrument panel distance range, the standard airbag deployment strategy is triggered.

[0018] In the above-mentioned adaptive passenger airbag deployment strategy generation method, the standard airbag deployment strategy is: the main airbag is inflated and deployed, and the secondary airbag provided on the main airbag is not deployed.

[0019] In the above-mentioned adaptive passenger airbag deployment strategy generation method, the secondary airbag expansion and deployment strategy is to deploy the primary airbag and the secondary airbag simultaneously.

[0020] In the above-mentioned adaptive passenger airbag deployment strategy generation method, the secondary airbag expansion and deployment strategy is to deploy the secondary airbag after a preset time of deployment of the primary airbag.

[0021] In the above-mentioned adaptive passenger airbag deployment strategy generation method, the secondary airbag is sewn to the area of ​​the main airbag facing the occupant, and both the main airbag and the secondary airbag have independent inflation spaces. The main airbag is connected to the gas generator through the main airbag switch, and the secondary airbag is connected to the gas generator through the secondary airbag switch. The working status of the main airbag switch, the secondary airbag switch and the gas generator is determined by the airbag deployment prohibition strategy, the airbag standard deployment strategy or the secondary airbag expansion deployment strategy.

[0022] In the above-mentioned adaptive passenger airbag deployment strategy generation method, when the airbag deployment strategy is prohibited, the primary airbag switch remains closed, the secondary airbag switch remains closed, and the gas generator does not operate.

[0023] In the above-mentioned adaptive passenger airbag deployment strategy generation method, during the standard airbag deployment strategy, the gas generator works, the primary airbag switch is turned on, and the secondary airbag switch remains closed.

[0024] In the above-mentioned adaptive passenger airbag deployment strategy generation method, when the secondary airbag expansion deployment strategy is implemented, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch is turned on at the same time.

[0025] In the above-mentioned adaptive passenger airbag deployment strategy generation method, when the secondary airbag expansion deployment strategy is implemented, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch is turned on after a preset time after the main airbag switch is turned on.

[0026] A computer program product comprises a computer program, wherein when the computer program is executed by a processor, the steps of the above method are implemented.

[0027] Beneficial Effects of the Invention: This invention proposes an adaptive passenger airbag deployment strategy generation system and method. This system uses signals from the Occupant Monitoring System (OMS) to obtain real-time information about the occupant's presence, weight, seat height, and distance from the instrument panel. It then develops a multi-level decision-making algorithm (e.g., standard airbag deployment strategy and secondary airbag expansion deployment strategy). This addresses the inadequate protection afforded by conventional passenger airbags designed for limited body types. For example, when a small female occupant is detected, the system triggers the secondary airbag expansion strategy. This dynamic adjustment of the airbag shape is achieved through a fixed-point failure mechanism (e.g., mechanical release or electromagnetically controlled latch) within the airbag's multi-layer folding structure, significantly reducing the risk of impact injuries to the occupant in a collision. The hierarchical airbag design optimizes the structure and improves system reliability. The primary and secondary airbags are physically decoupled and controlled via independent inflation chambers (primary and secondary airbag switches). This ensures that the fixed-point failure persists during normal airbag deployment, while a failure mechanism (e.g., pyrotechnic generator detonation or motor electromagnetic control) releases the secondary airbag when expansion deployment is required. This design not only improves airbag deployment response accuracy (for example, enabling secondary airbags to deploy after a preset time or simultaneously), but also enhances system robustness, preventing false triggering. Multi-layer foldable storage optimizes space utilization and extends the lifespan of airbag components. By dynamically binding body recognition parameters (such as weight and seat height threshold) to airbag strategies (e.g., disable deployment, standard deployment, and secondary expansion), this system enables scalability and intelligent upgrade potential, supporting expansion from secondary protection to three or more levels (e.g., distinguishing between obese and elderly occupants). Combining the OMS algorithm with auxiliary data such as the steering wheel bone density sensor enables refined control of airbag pressure and shape. This not only enhances the adaptability of protection but also provides a technical framework for future integration of AI algorithms (such as deep learning models), driving the development of intelligent and personalized airbag systems. By enabling real-time judgment in the control decision module (e.g., disable airbag deployment when no occupants are present, triggering the secondary expansion strategy when a small occupant is present), the risk of excessive impact on small occupants caused by traditional airbags is effectively avoided. Furthermore, strategy parameters (such as N1, N2, H3, and S) are based on human body data, ensuring compatibility across different vehicle designs and enhancing safety and user compatibility. By incorporating fault response mechanisms (such as automatic strategy switching and airbag switch-off control upon communication interruption), the airbag deployment strategy can be seamlessly downgraded to a safe mode before a vehicle collision command is triggered or in the event of a system failure (such as loss of the OMS signal), preventing protection failure.The present invention integrates Occupant Monitoring System (OMS) signals to identify occupant size and position, constructs a multi-stage airbag deployment strategy and adaptive structural control architecture based on perception data, and achieves precise matching of airbag shape and protection strength while ensuring collision safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the process of the present invention; Figure 3 This is a schematic diagram of the structure of the secondary airbag of the present invention; Figure 4 Schematic diagram of the hierarchical relationship of the components of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1 An adaptive passenger airbag deployment strategy generation system, such as Figure 1 As shown, it includes: The sensing and observation module is used to obtain in real time the presence status signal of the occupant corresponding to the front airbag, the weight of the occupant corresponding to the front airbag, the seat height of the occupant corresponding to the front airbag, and the distance between the occupant corresponding to the front airbag and the instrument panel; The control decision module is used to generate a strategy to prohibit airbag deployment when the airbag deployment command is triggered by a collision and the presence status signal of the front airbag corresponding to the occupant is no occupant; When the airbag deployment command is triggered by a collision, if the presence status signal of the front airbag corresponding to the occupant indicates that there is an occupant, the weight of the front airbag corresponding to the occupant is compared with the set weight range, and the sitting height of the front airbag corresponding to the occupant is compared with the set sitting height range. If the weight of the front airbag corresponding to the occupant is within the set weight range and the sitting height of the front airbag corresponding to the occupant is within the set sitting height range, the standard airbag deployment strategy is triggered; When the weight of the occupant corresponding to the current airbag is not within the set weight range and / or the sitting height of the occupant corresponding to the front airbag is not within the set sitting height range, the secondary airbag expansion and deployment strategy is triggered, and the distance between the occupant corresponding to the front airbag and the instrument is compared with the set occupant and instrument distance range. When the distance between the occupant corresponding to the current airbag and the instrument is within the instrument distance range, the secondary airbag expansion and deployment strategy is triggered.

[0031] In the above technical solution, when the distance between the occupant corresponding to the current airbag and the instrument is not within the instrument distance range, the standard deployment strategy of the airbag is triggered.

[0032] In the above technical solution, when the occupant distance is not within the set range, the standard deployment strategy is forced to return, which is conducive to risk avoidance. It can effectively prevent the secondary airbag from deploying at inappropriate times due to the occupant sitting extremely forward (such as bending over to pick up items), which in turn increases the risk of collision injury.

[0033] In the above technical solution, the standard deployment strategy of the airbag is: the main airbag is inflated and deployed, and the secondary airbag arranged on the main airbag is not deployed.

[0034] In the above technical solution, the secondary airbag expansion and deployment strategy is to deploy the primary airbag and the secondary airbag simultaneously.

[0035] In the above technical solution, the secondary airbag expansion and deployment strategy is that the secondary airbag is deployed after a preset time of deployment of the main airbag.

[0036] In the above technical solution, a graded airbag deployment mechanism is jointly constructed through different airbag deployment strategies: the standard airbag deployment strategy, that is, the main airbag is inflated and deployed, and the secondary airbag is not deployed, which meets the protection needs of most people; the secondary airbag expansion deployment strategy, that is, both the main airbag and the secondary airbag are deployed, which meets the protection needs of people who are too small or too large; the design of flexible delayed deployment allows the optimization of the airbag shape by calibrating the time difference (such as the main airbag is inflated first to form a buffer layer, and the secondary airbag is expanded subsequently), thereby improving the protection adaptability for different groups of people.

[0037] In the above technical solution, the secondary airbag is sewn to the area of ​​the main airbag facing the occupant. The main airbag and the secondary airbag each have independent inflation space. The main airbag is connected to the gas generator through the main airbag switch, and the secondary airbag is connected to the gas generator through the secondary airbag switch. The working status of the main airbag switch, the secondary airbag switch and the gas generator is determined by the airbag deployment prohibition strategy, the airbag standard deployment strategy or the secondary airbag expansion deployment strategy.

[0038] In the above technical solution, when the airbag deployment strategy is prohibited, the primary airbag switch remains closed, the secondary airbag switch remains closed, and the gas generator does not work.

[0039] In the above technical solution, when the airbag standard deployment strategy is used, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch remains closed.

[0040] In the above technical solution, when the secondary airbag expansion and deployment strategy is implemented, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch is turned on at the same time.

[0041] In the above technical solution, the main airbag and the secondary airbag have independent inflation spaces and switches, which are precisely implemented through the opening and closing combination of switches. The switch control solution avoids the reliability disputes of purely mechanical structures (such as the stability of gunpowder detonation) and is easier to meet automotive-grade safety standards.

[0042] In the above technical solution, when the secondary airbag expansion and deployment strategy is implemented, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch is turned on after a preset time after the main airbag switch is turned on.

[0043] Regarding the preset time, some optimized technical solutions include: the time when the secondary airbag starts to inflate is adjustable. Combined with the calibration results of the specific protection effect on personnel, the time when the secondary airbag starts to inflate is adjusted, or deviated by an algorithm-recognized time (5~10ms).

[0044] In the above technical solution, the core architecture of the airbag control system is as follows: Figure 4 As shown in the figure, its function is to visualize the "perception-decision-execution" full-link technical process of the adaptive airbag, which includes the following: at the data acquisition end: the OMS (Occupancy Monitoring System) camera captures occupant characteristics in real time (the body characteristic parameters of the front airbag corresponding to the occupant, that is, the front airbag corresponding to the occupant's weight and the front airbag corresponding to the occupant's seat height / N2, and the distance between the front airbag corresponding to the occupant and the instrument / N3); the seat SBR (Seat Belt Reminder) system detects the occupant's presence (the front airbag corresponding to the occupant's presence status signal / N1) and the seat belt status; the seat motor feedbacks the seat adjustment stroke to assist in verifying the body shape (such as the seat height corresponding to the seat height).

[0045] Decision center: ACU / IVI controller (Airbag Control Unit, airbag control unit / In-Vehicle Infotainment, in-vehicle infotainment system): executes the calibration algorithm based on the input parameters (N1 / N2 / N3), determines whether to trigger protection (with or without occupants) according to the presence status signal of the front airbag corresponding to the occupant, and generates the airbag deployment strategy based on the weight of the front airbag corresponding to the occupant, the seat height of the front airbag corresponding to the occupant, and the distance between the front airbag corresponding to the occupant and the instrument panel.

[0046] Mechanical response end: airbag switch control (standard strategy only opens the main valve, secondary strategy double valve coordination); failure mechanism triggering (gunpowder pull ring / electromagnetic pin releases the secondary airbag).

[0047] In this technical solution, the airbag deployment disable strategy prevents false triggering of the airbag due to heavy objects, pets, or child safety seats placed on the seats (traditional systems are prone to false triggering due to insufficient pressure sensor sensitivity). This strategy significantly reduces unnecessary repair expenses and reduces ineffective wear and tear on the igniter and inflator, extending the life of the safety system. The standard airbag deployment strategy maximizes impact mitigation based on body shape and seating safety. The airbag deployment pattern fully covers the collision risk zone from the steering wheel to the occupant's chest, increasing energy absorption. The secondary airbag expansion strategy dynamically suppresses impact damage based on body shape or out-of-position risks, forming a basic cushioning layer to absorb initial collision energy. The expanded airbag is released after a preset time, protecting smaller occupants from high-speed airbag impacts. Through three-level sensor fusion (OMS + seat SBR + motor travel), this strategy fundamentally solves the industry's problem of insufficient protection for smaller occupants.

[0048] In this technical solution, a pre-set timer creates a hierarchical cushioning structure. The primary airbag inflates first, forming a base cushioning layer that prioritizes kinetic energy absorption when the occupant leans forward. The secondary airbag, after a delayed deployment, forms a reinforced protective layer, filling the remaining space between the primary airbag and the occupant, preventing occupants of unusual size from experiencing rigid impacts caused by excessive airbag inflation. Furthermore, during single-stage inflation, the inflator power is concentrated on the primary airbag, ensuring it quickly reaches operating pressure. The delayed activation of the secondary airbag switch prevents simultaneous inflation of both airbags, which could result in insufficient pressure, ensuring each reaches its designed capacity.

[0049] In some preferred embodiments of the present invention, when determining the airbag switch, Figure 3 As shown, when the secondary airbag is not deployed, it is kept locked by a fixed locking pin mechanism, that is, the secondary airbag switch remains closed, the gas generator does not work, and is fixed to the side wall of the airbag frame by a fixing component. If the locking pin is not disengaged, the secondary airbag will not deploy.

[0050] In the above technical solution, when the secondary airbag switch is normally opened, the fixing point of the fixing component does not fail, and its failure structure can be implemented in the following forms: 1. The failure structure for fixed point failure can be realized by a mechanical structure, and the secondary airbag is released by detonating the gunpowder generator to control the pulling out of the airbag, and the gas generator works to inflate the airbag; 2. The fixed point failure can be achieved by pulling out the external motor electromagnetic control pin. By pulling out the external motor electromagnetic control pin, the secondary airbag is released and the gas generator works to inflate.

[0051] When determining the airbag deployment strategy for people with a body shape smaller than normal, in some preferred embodiments, the airbag deployment prohibition strategy is applicable when the OMS camera or seat sensor detects that there is no one sitting (N1=no one); the standard airbag deployment strategy is applicable when a standard-sized occupant is identified (i.e., N2≥threshold) and the sitting posture is safe (N3≥safe distance); the secondary airbag expansion deployment strategy is applicable when a small-sized occupant is detected (N2<threshold) or out-of-position state (N3<safe distance, such as leaning forward), wherein N1 is the presence status signal of the occupant corresponding to the front airbag, N1=0 indicates no one, N1=1 indicates someone, N2 indicates the body feature parameters of the occupant corresponding to the front airbag (i.e., the weight of the occupant corresponding to the front airbag and the sitting height of the occupant corresponding to the front airbag), and N3 indicates the distance between the occupant corresponding to the front airbag and the instrument, which is obtained based on the distance between the occupant corresponding to a small-sized person and the instrument, and the distance between the occupant corresponding to the front airbag whose body feature is within the threshold range and the instrument. Using human body data and the body parameters of the 50th percentile male body type as a reference, we determined the body type threshold and the distance between the front airbag and the instrument panel for passengers within the threshold. Using the parameters of the 5% of small female body types as a reference, we determined the distance between the front airbag and the instrument panel for passengers of small body types. The specific calculation formula for S is: S = (S1 + S2) / 2, where S is the distance between the front airbag and the instrument panel, S1 is the distance between the front airbag and the instrument panel for passengers within the threshold, and S2 is the distance between the front airbag and the instrument panel for passengers of small body types.

[0052] In the above technical solution, when determining the airbag deployment strategy for people smaller than normal, the prohibition of airbag deployment effectively avoids resource waste and false triggering, preventing ineffective airbag deployment due to empty seats, heavy objects, or pets accidentally touching the seat sensor. This reduces the replacement cost of airbag modules costing tens of thousands of yuan, improves system reliability, reduces the risk of aging and failure caused by frequent electronic system triggering, and extends the life of the safety system. The standard airbag deployment strategy maximizes collision protection effectiveness, providing the highest level of cushioning and restraint in a fully inflated state, fully adapting to the protection needs of medium-sized and larger occupants (such as head and chest impact energy absorption). The secondary airbag expansion deployment strategy dynamically reduces impact damage. For smaller occupants, the controlled deactivation of the secondary airbag (such as by unlocking the blasting bolt) reduces the airbag inflation volume, thereby reducing the risk of secondary injuries such as excessive neck recoil and rib fractures. For out-of-position occupants, the airbag deployment sequence is delayed (delayed secondary airbag inflation) to prevent direct impact with the high-speed deploying airbag in the early stages of a collision.

[0053] In the above technical solution, different response strategies are implemented according to different airbag triggering scenarios, so as to maintain high protection intensity for mainstream occupants under the premise of controllable costs, dynamically optimize the impact force for high-risk groups (small body / out of position), and eliminate resource waste in invalid scenarios (empty seats).

[0054] When calculating the airbag deployment strategy for people with smaller bodies than normal, the present invention, in some preferred embodiments, estimates the data of the small body population by referring to human body data, as shown in Table 1: Table 1 Reference human body data calculation table According to the above table, the weight parameter is set to 63.4kg and the seat height is set to 83.55cm. Therefore, when the weight parameter ≥ 63.4kg and the seat height ≥ 83.55cm are met, the standard airbag deployment strategy is triggered; when the weight parameter is < 63.4kg and the seat height is < 83.55cm, the secondary airbag expansion deployment strategy is triggered.

[0055] Example 2 Airbag deployment strategy methods, such as Figure 2As shown in the figure, the OMS camera integrates and analyzes the occupant's presence status (N1), body shape characteristics (N2), and real-time distance from the dashboard (N3), and integrates the seat SBR parameters and motor stroke parameters for cross-validation to form an intelligent airbag control decision: when it is identified that no one is riding, strategy 1 is triggered (PAB does not detonate, that is, the airbag deployment is prohibited strategy) to avoid false triggering; when a standard-sized occupant is detected, strategy 2 (PAB detonates normally, that is, the airbag standard deployment strategy) is adopted to provide basic protection; and for small-sized or out-of-position occupants (such as occupants close to the dashboard), strategy 3 (PAB detonation + secondary airbag prevention mechanism, that is, the secondary airbag expansion and deployment strategy) is activated.

[0056] A method for generating an adaptive passenger airbag deployment strategy, comprising: Real-time acquisition of the presence status signal of the occupant corresponding to the front airbag, the weight of the occupant corresponding to the front airbag, the seat height of the occupant corresponding to the front airbag, and the distance between the occupant corresponding to the front airbag and the instrument panel; When the airbag deployment command is triggered due to a collision, if the occupant presence status signal corresponding to the front airbag is no occupant, a strategy for prohibiting airbag deployment is generated; When the airbag deployment command is triggered by a collision, if the presence status signal of the front airbag corresponding to the occupant indicates that there is an occupant, the weight of the front airbag corresponding to the occupant is compared with the set weight range, and the sitting height of the front airbag corresponding to the occupant is compared with the set sitting height range. If the weight of the front airbag corresponding to the occupant is within the set weight range and the sitting height of the front airbag corresponding to the occupant is within the set sitting height range, the standard airbag deployment strategy is triggered; When the weight of the occupant corresponding to the current airbag is not within the set weight range and / or the sitting height of the occupant corresponding to the front airbag is not within the set sitting height range, the secondary airbag expansion and deployment strategy is triggered, and the distance between the occupant corresponding to the front airbag and the instrument is compared with the set occupant and instrument distance range. When the distance between the occupant corresponding to the current airbag and the instrument is within the instrument distance range, the secondary airbag expansion and deployment strategy is triggered.

[0057] In the above technical solution, when the distance between the occupant corresponding to the current airbag and the instrument is not within the instrument distance range, the standard deployment strategy of the airbag is triggered.

[0058] In the above technical solution, the standard deployment strategy of the airbag is: the main airbag is inflated and deployed, and the secondary airbag arranged on the main airbag is not deployed.

[0059] In the above technical solution, the secondary airbag expansion and deployment strategy is to deploy the primary airbag and the secondary airbag simultaneously.

[0060] In the above technical solution, the secondary airbag expansion and deployment strategy is that the secondary airbag is deployed after a preset time of deployment of the main airbag.

[0061] In the above technical solution, the secondary airbag is sewn to the area of ​​the main airbag facing the occupant. The main airbag and the secondary airbag each have independent inflation space. The main airbag is connected to the gas generator through the main airbag switch, and the secondary airbag is connected to the gas generator through the secondary airbag switch. The working status of the main airbag switch, the secondary airbag switch and the gas generator is determined by the airbag deployment prohibition strategy, the airbag standard deployment strategy or the secondary airbag expansion deployment strategy.

[0062] In the above technical solution, when the airbag deployment strategy is prohibited, the primary airbag switch remains closed, the secondary airbag switch remains closed, and the gas generator does not work.

[0063] In the above technical solution, when the airbag standard deployment strategy is used, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch remains closed.

[0064] In the above technical solution, when the secondary airbag expansion and deployment strategy is implemented, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch is turned on at the same time.

[0065] In the above technical solution, when the secondary airbag expansion and deployment strategy is implemented, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch is turned on after a preset time after the main airbag switch is turned on.

[0066] Example 3 A computer program product includes a computer program, characterized in that when the computer program is executed by a processor, the steps of the method described in Example 2 are implemented.

[0067] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

[0068] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0069] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A system that specifies the functions of a box or boxes.

[0070] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction system that is implemented in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0071] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0072] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. An adaptive passenger airbag deployment strategy generation system, characterized in that it include: The sensing and observation module is used to obtain in real time the presence status signal of the occupant corresponding to the front airbag, the weight of the occupant corresponding to the front airbag, the seat height of the occupant corresponding to the front airbag, and the distance between the occupant corresponding to the front airbag and the instrument panel; The control decision module is used to generate a strategy to prohibit airbag deployment when the airbag deployment command is triggered by a collision and the presence status signal of the front airbag corresponding to the occupant is no occupant; When the airbag deployment command is triggered by a collision, if the presence status signal of the front airbag corresponding to the occupant indicates that there is an occupant, the weight of the front airbag corresponding to the occupant is compared with the set weight range, and the sitting height of the front airbag corresponding to the occupant is compared with the set sitting height range. If the weight of the front airbag corresponding to the occupant is within the set weight range and the sitting height of the front airbag corresponding to the occupant is within the set sitting height range, the standard airbag deployment strategy is triggered; When the weight of the occupant corresponding to the current airbag is not within the set weight range and / or the sitting height of the occupant corresponding to the front airbag is not within the set sitting height range, the secondary airbag expansion and deployment strategy is triggered, and the distance between the occupant corresponding to the front airbag and the instrument is compared with the set occupant and instrument distance range. When the distance between the occupant corresponding to the current airbag and the instrument is within the instrument distance range, the secondary airbag expansion and deployment strategy is triggered.

2. An adaptive passenger airbag deployment strategy generation system according to claim 1, characterized in that: When the distance between the occupant corresponding to the current airbag and the instrument is not within the instrument distance range, the standard airbag deployment strategy is triggered.

3. An adaptive passenger airbag deployment strategy generation system according to claim 1, characterized in that: The standard deployment strategy of the airbag is as follows: the main airbag is inflated and deployed, and the secondary airbag arranged on the main airbag is not deployed.

4. An adaptive passenger airbag deployment strategy generation system according to claim 1, characterized in that: The secondary airbag expansion and deployment strategy is to deploy the primary airbag and the secondary airbag simultaneously.

5. An adaptive passenger airbag deployment strategy generation system according to claim 1, characterized in that: The secondary airbag expansion and deployment strategy is that the secondary airbag is deployed after a preset time of deployment of the primary airbag.

6. An adaptive passenger airbag deployment strategy generation system according to claim 1, characterized in that: The secondary airbag is sewn to the area of ​​the main airbag facing the occupant. Both the main airbag and the secondary airbag have independent inflation spaces. The main airbag is connected to the gas generator through the main airbag switch, and the secondary airbag is connected to the gas generator through the secondary airbag switch. The working status of the main airbag switch, the secondary airbag switch and the gas generator is determined by the airbag deployment prohibition strategy, the airbag standard deployment strategy or the secondary airbag expansion deployment strategy.

7. An adaptive passenger airbag deployment strategy generation system according to claim 6, characterized in that: When the airbag deployment strategy is disabled, the primary airbag switch remains closed, the secondary airbag switch remains closed, and the inflator does not operate.

8. An adaptive passenger airbag deployment strategy generation system according to claim 6, characterized in that: During the standard airbag deployment strategy, the gas generator works, the primary airbag switch opens, and the secondary airbag switch remains closed.

9. An adaptive passenger airbag deployment strategy generation system according to claim 6, characterized in that: During the secondary airbag expansion and deployment strategy, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch is turned on at the same time.

10. An adaptive passenger airbag deployment strategy generation system according to claim 6, characterized in that: During the secondary airbag expansion and deployment strategy, the gas generator works, the main airbag switch is turned on, and the secondary airbag switch is turned on after the preset time of the main airbag switch being turned on.

11. A method for generating an adaptive passenger airbag deployment strategy, characterized in that it include: Real-time acquisition of the presence status signal of the occupant corresponding to the front airbag, the weight of the occupant corresponding to the front airbag, the seat height of the occupant corresponding to the front airbag, and the distance between the occupant corresponding to the front airbag and the instrument panel; When the airbag deployment command is triggered due to a collision, if the occupant presence status signal corresponding to the front airbag is no occupant, a strategy for prohibiting airbag deployment is generated; When the airbag deployment command is triggered by a collision, if the presence status signal of the front airbag corresponding to the occupant indicates that there is an occupant, the weight of the front airbag corresponding to the occupant is compared with the set weight range, and the sitting height of the front airbag corresponding to the occupant is compared with the set sitting height range. If the weight of the front airbag corresponding to the occupant is within the set weight range and the sitting height of the front airbag corresponding to the occupant is within the set sitting height range, the standard airbag deployment strategy is triggered; When the weight of the occupant corresponding to the current airbag is not within the set weight range and / or the sitting height of the occupant corresponding to the front airbag is not within the set sitting height range, the secondary airbag expansion and deployment strategy is triggered, and the distance between the occupant corresponding to the front airbag and the instrument is compared with the set occupant and instrument distance range. When the distance between the occupant corresponding to the current airbag and the instrument is within the instrument distance range, the secondary airbag expansion and deployment strategy is triggered.

12. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to claim 11 are implemented.

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