Zero-gravity active safety seat and control method for a zero-gravity active safety seat

Abstract

The application provides a zero-gravity active safety seat and a control method of the zero-gravity active safety seat, which are applied to a mobile carrier and relate to the technical field of safety seats. The zero-gravity active safety seat comprises a seat body, a side wing supporting air bag, a seat controller, an acceleration collecting mechanism and a pressure sensor. The mobile carrier is provided with an air source. The side wing supporting air bag is arranged on the seat body. The seat body comprises a seat framework and a seat posture adjusting mechanism. The seat controller controls the working state of the air source and / or the working state of the seat posture adjusting mechanism based on the motion state of the mobile carrier. By analyzing the running state of the mobile carrier, the position and posture of the zero-gravity active safety seat and the state of the side wing supporting air bag are adjusted, the accidents and the degree of casualties of passengers are fundamentally reduced and lowered, the probability of accidents of passengers is actively reduced, and the safety and reliability of the zero-gravity seat under the high-speed running of the vehicle are improved.

Description

Technical Field

[0001] This invention relates to the field of child safety seat technology, and in particular to a zero-gravity active safety seat and a control method for a zero-gravity active safety seat. Background Technology

[0002] Zero-gravity seats achieve zero contact between the occupant's body and the seat surface by adjusting the seat cushion angle, backrest angle, leg rest extension, and tilt. This allows the seat to bear the weight of the occupant's body to the greatest extent possible, reducing the load on the occupant's skeleton and providing a unique zero-gravity space experience. However, in zero-gravity mode, the occupant's posture is almost reclining, significantly reducing the protective effect of the seat belt. Furthermore, during emergency braking or a collision at high speeds, the occupant faces the risk of falling (sliding), increasing the risk of displacement and impact. Therefore, the safety of using zero-gravity functions while driving is greatly limited.

[0003] Existing active safety technologies collect vehicle signals through external radar sensors, speed sensors, and other means to determine whether the vehicle has entered a risky state, so as to actively adjust the seat status and provide a certain degree of protection for the occupants. However, the signals from external radar and vehicle body sensors are affected by many external environmental factors, which to some extent restricts the application and research of zero-gravity seats.

[0004] In-vehicle facial recognition or ultrasonic position sensors, as a new generation of in-vehicle and seat position sensors, are used for occupant identification and safety protection. However, facial recognition is widely used for comparison and authentication, while ultrasonic sensors are used as position sensors for in-vehicle mobile devices. However, due to the complex and difficult environmental factors inside the vehicle, their application is difficult to be widespread. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a zero-gravity active safety seat and a control method for the zero-gravity active safety seat. By collecting the operating status information of the moving vehicle through pressure sensors and an acceleration acquisition mechanism set on the frame of the zero-gravity active safety seat, analyzing the operating status of the moving vehicle, and then adjusting the position and posture of the zero-gravity active safety seat and the state of the side support airbags, the invention fundamentally reduces and lowers the incidence and severity of accidents involving occupants, actively reduces the probability of accidents involving occupants, and improves the safety and reliability of the zero-gravity seat under high-speed vehicle operation.

[0006] In a first aspect, the present invention provides a zero-gravity active safety seat for use in mobile vehicles. The zero-gravity active safety seat includes: a seat body, side wing support airbags, a seat controller, an acceleration acquisition mechanism, and a pressure sensor.

[0007] The acceleration acquisition mechanism is mounted on the seat body;

[0008] The mobile carrier is provided with a gas source; the gas source is connected with the side wing support air bag, and the gas source is used for inflating and deflating the side wing support air bag;

[0009] The side wing support air bag is arranged on the seat body;

[0010] The pressure sensor is used for acquiring the air pressure value in the side wing support air bag and sending the air pressure value to the seat controller;

[0011] The seat body comprises a seat framework and a seat posture adjusting mechanism;

[0012] The seat posture adjusting mechanism is arranged on the seat framework;

[0013] The acceleration acquisition mechanism is used for acquiring the acceleration value of the mobile carrier and sending the acceleration value to the seat controller;

[0014] The seat posture adjusting mechanism is used for adjusting the posture of the zero-gravity active safety seat; wherein the posture of the zero-gravity active safety seat comprises a zero-gravity posture and a normal posture;

[0015] The gas source and the seat posture adjusting mechanism are connected with the seat controller;

[0016] The seat controller determines the motion state of the mobile carrier based on the air pressure value in the side wing support air bag and the acceleration value of the mobile carrier; wherein the motion state of the mobile carrier comprises normal braking, emergency braking, pre-collision state, front collision, side collision, rear collision, turning or side sliding;

[0017] The seat controller controls the working state of the gas source and / or the working state of the seat posture adjusting mechanism based on the motion state of the mobile carrier.

[0018] In some preferred embodiments of the present application, the acceleration acquisition mechanism comprises a first acceleration sensor, a second acceleration sensor and a third acceleration sensor;

[0019] The seat body further comprises a headrest, a backrest and a seat cushion;

[0020] The headrest, the backrest and the seat cushion are fixedly connected with the seat framework;

[0021] The first acceleration sensor is arranged in the interior of the headrest;

[0022] The second acceleration sensor is arranged on the seat framework on the left side of the backrest and / or on the seat framework on the right side of the backrest;

[0023] The third acceleration sensor is arranged on the seat framework on the left side of the seat cushion and / or on the seat framework on the right side of the seat cushion.

[0024] In some preferable embodiments of the present application, the seat posture adjustment mechanism comprises a slide rail module, a lifting module, a leg rest adjustment module, a cushion reclining speed adjustment module and a backrest speed adjustment module.

[0025] The slide rail module is used for adjusting the position of the zero-gravity active safety seat.

[0026] The lifting module is used for adjusting the height of the cushion of the zero-gravity active safety seat.

[0027] The leg rest adjustment module is used for adjusting the position of the leg rest of the zero-gravity active safety seat.

[0028] The cushion reclining speed adjustment module is used for adjusting the reclining angle of the cushion of the zero-gravity active safety seat.

[0029] The backrest speed adjustment module is used for adjusting the reclining angle of the backrest of the zero-gravity active safety seat.

[0030] In some preferable embodiments of the present application, the leg rest adjustment module comprises a first lifting motor and a second lifting motor.

[0031] The cushion reclining speed adjustment module comprises a first cushion reclining speed adjustment motor and a second cushion reclining speed adjustment motor.

[0032] The backrest speed adjustment module comprises a first backrest speed adjustment motor and a second backrest speed adjustment motor.

[0033] In some preferable embodiments of the present application, the seat controller comprises a domain drive chip and a relay circuit.

[0034] The domain drive chip is connected with the relay circuit.

[0035] The relay circuit is connected with the slide rail module, the leg rest adjustment module, the lifting module and the cushion reclining speed adjustment module.

[0036] The domain drive chip is used for controlling the slide rail module, the leg rest adjustment module, the lifting module and the cushion reclining speed adjustment module through the relay circuit.

[0037] In some preferable embodiments of the present application, the seat controller further comprises a MOS circuit.

[0038] The MOS circuit is connected with the backrest speed adjustment module.

[0039] The domain drive chip is used for controlling the backrest speed adjustment module through the MOS circuit.

[0040] In some preferable embodiments of the present application, the MOS circuit comprises a first MOS drive, a second MOS drive, a third MOS drive and a fourth MOS drive.

[0041] The first MOS driver, the second MOS driver, the third MOS driver, and the fourth MOS driver are all connected to the domain driver chip;

[0042] Both the first MOS driver and the second MOS driver are connected to one end of the backrest speed control motor.

[0043] Both the third MOS drive and the fourth MOS drive are connected to the other end of the backrest speed control motor.

[0044] The domain drive chip controls the state of the first MOS drive, second MOS drive, third MOS drive and fourth MOS drive through the output PWM signal, so as to make the backrest speed control motor rotate forward or reverse.

[0045] In some preferred embodiments of the present invention, the zero-gravity active safety seat further includes: an active seat belt system;

[0046] Active seatbelt systems include: seatbelt webbing;

[0047] The active seatbelt system is connected to the seat controller;

[0048] Active seatbelt systems tighten or release seatbelt webbing based on the air pressure inside the side support airbags and the acceleration of the moving vehicle.

[0049] In some preferred embodiments of the present invention, the active seatbelt system further includes: an electronic controller and a retraction motor;

[0050] The electronic controller is connected to the seat controller;

[0051] The electronic controller is used to control the rewind motor to tighten or release the seat belt webbing based on the air pressure value inside the side support airbag and the acceleration value of the moving vehicle.

[0052] Secondly, the present invention provides a control method for a zero-gravity active safety seat, applied to a seat controller of a zero-gravity active safety seat, comprising:

[0053] The acceleration acquisition mechanism is controlled to collect the acceleration value of the moving vehicle, and the pressure sensor is controlled to collect the air pressure value inside the side support airbags;

[0054] The motion state of the mobile vehicle is determined based on the air pressure value inside the side support airbags and the acceleration value of the mobile vehicle; among which, the motion state of the mobile vehicle includes: normal braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, turning or sideslip.

[0055] The working status of the air source and / or the working status of the seat posture adjustment mechanism are controlled based on the motion status of the mobile vehicle.

[0056] This invention brings the following beneficial effects:

[0057] This invention provides a zero-gravity active safety seat and a control method for it, applied to a mobile vehicle. The zero-gravity active safety seat includes: a seat body, side support airbags, a seat controller, an acceleration acquisition mechanism, and a pressure sensor. The acceleration acquisition mechanism is disposed on the seat body. The mobile vehicle is provided with an air source. The air source is connected to the side support airbags and is used to inflate and deflate the side support airbags. The side support airbags are disposed on the seat body. The pressure sensor is used to acquire the air pressure value inside the side support airbags and send the air pressure value to the seat controller. The seat body includes: a seat frame and a seat posture adjustment mechanism. The seat posture adjustment mechanism is disposed on the seat frame. The acceleration acquisition mechanism is used to acquire the acceleration value of the mobile vehicle and send the acceleration value to the seat controller. The seat posture adjustment mechanism is used to adjust the posture of the zero-gravity active safety seat. The posture of the zero-gravity active safety seat includes: a zero-gravity position... The seat controller is connected to both the normal and conventional positions of the vehicle. The air source and seat posture adjustment mechanism are connected to the seat controller. The seat controller determines the motion state of the vehicle based on the air pressure in the side wing support airbags and the acceleration of the moving vehicle. The motion state of the moving vehicle includes: normal braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, steering, or sideslip. The seat controller controls the working state of the air source and / or the working state of the seat posture adjustment mechanism based on the motion state of the moving vehicle. The system collects the operating state information of the moving vehicle through pressure sensors and an acceleration acquisition mechanism installed on the zero-gravity active safety seat frame, analyzes the operating state of the moving vehicle, and then adjusts the position of the zero-gravity active safety seat and the state of the side wing support airbags. This fundamentally reduces and mitigates the incidence and severity of accidents involving occupants, actively reducing the probability of accidents and improving the safety and reliability of the zero-gravity seat under high-speed vehicle operation. Attached Figure Description

[0058] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0059] Figure 1 This is a schematic diagram of the zero-gravity active safety seat posture provided in an embodiment of the present invention;

[0060] Figure 2 This is a structural schematic diagram of a zero-gravity active safety seat provided in an embodiment of the present invention;

[0061] Figure 3This is a schematic diagram of the position of a speed-regulating motor provided in an embodiment of the present invention;

[0062] Figure 4 A schematic diagram of a speed-regulating motor control provided in an embodiment of the present invention;

[0063] Figure 5 A control principle diagram of a zero-gravity active safety seat provided in an embodiment of the present invention;

[0064] Figure 6 This is a schematic diagram of a zero-gravity active safety seat sensor setup provided in an embodiment of the present invention;

[0065] Figure 7 A flowchart illustrating a control method for a zero-gravity active safety seat provided in an embodiment of the present invention. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0067] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0068] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0069] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0070] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0071] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0072] With the rapid development of the new energy electric vehicle industry both domestically and internationally, the popularity of new energy vehicles is increasing. New energy vehicles offer larger interior spaces, which are more conducive to the design and layout of complex, multi-functional intelligent seats, meeting the needs of different groups and transforming new energy vehicles into a second space for people. Currently, zero-gravity seats are a highlight for new energy vehicle manufacturers, attracting increasing attention and leading to an expansion of their configuration in new energy vehicles. Zero-gravity seats are gradually extending to mid-to-low-end cars to meet the needs of a wider range of people seeking zero-gravity seating. Zero-gravity seats achieve zero contact between the occupant's body and the seat surface by adjusting the seat cushion angle, backrest angle, leg rest extension, and rotation. This allows the seat to bear the weight of the occupant's body to the maximum extent, reducing the load on the occupant's skeleton and providing a unique zero-gravity space experience.

[0073] Although zero-gravity seats are gradually becoming more common in the new energy vehicle industry, data from numerous new energy vehicle manufacturers on the frequency and operating conditions of their use suggest that these seats are primarily suitable for parking or low-speed operation. Furthermore, the usage frequency of this function in most new energy vehicles equipped with zero-gravity seats is far lower than the estimated number of times the vehicle will be used. The reasons for this are as follows: In zero-gravity mode, the occupant's posture is almost reclining, significantly reducing the protective effect of the seatbelt. Moreover, during emergency braking or a collision at high speeds, occupants face the risk of lurching (sliding down), increasing the risk of displacement and impact. Therefore, the safety of using the zero-gravity function while driving is greatly limited. When parked, occupants often need to get up and move around or stretch their necks to relieve fatigue after prolonged sitting, and zero-gravity seats are more suitable for short naps and rest periods.

[0074] Among the known types of car collisions, the most common are frontal, side, and rear-end collisions. Frontal collisions account for a high proportion, exceeding 40% of all accidents, and the severity of injuries and fatalities is far greater than in side and rear-end collisions. Especially during the deployment of zero-gravity seats, the probability of an accident increases exponentially, further increasing the likelihood of secondary impacts on occupants, significantly limiting the promotion and widespread adoption of zero-gravity seating in the automotive industry. Therefore, the fundamental contradiction lies between the demand for zero-gravity functionality during vehicle operation and its inherent safety features. Solving the active safety issues of zero-gravity seats has become a key factor for seating manufacturers and new energy vehicle companies to stand out in the field of cabin comfort.

[0075] Although zero-gravity seat functions pose some accident risks to vehicle operation safety, they objectively reflect people's demand for comfortable car seats and are an important source of technological innovation in car seats. Therefore, through technological innovation, the safety factors caused by zero-gravity seats can be reduced, ensuring that occupants can use the zero-gravity seat function while also improving the active safety of the zero-gravity seats themselves, thereby mitigating the risks that exist during use to a certain extent.

[0076] Many new energy vehicle manufacturers have increased their measures to protect occupants. This includes improving energy absorption in collisions through structural design of the body-in-white and optimizing airbag placement. Many new energy vehicles now feature side airbags in the seats and multiple airbags in the doors to further reduce the risk of injury or death in collisions. However, for the zero-gravity seats in the middle row, the overlap between the occupant's posture and seat position and the airbag protection area is smaller after the seats deploy, thus weakening the protective effect of the airbags to some extent. Therefore, due to the lack of development of zero-gravity deployment functionality at high speeds, many occupants have not experienced the zero-gravity function for extended periods while the vehicle is traveling at high speeds.

[0077] Extensive research has been conducted on active safety features for vehicle seats. For example, vehicle signals such as external radar sensors and speed sensors are collected to determine if the vehicle has entered a risky state, so as to actively adjust the seat status and provide a certain degree of protection for the occupants. However, external radar and vehicle sensor signals are affected by many external environmental factors. Obstacles, weather changes, and road bumps may cause delays in signal transmission and processing. Interference between signals inside and outside the vehicle may also lead to the risk of misjudgment or non-response. At the same time, some signals, especially radar sensor signals (which affect the vehicle's collection of radar data), are difficult to access by seat suppliers, which to some extent limits their application and research.

[0078] Seat anti-pinch functions, derived from and extended from window anti-pinch systems, are also widely used in seats. By calibrating the anti-pinch force against human contact, they actively control the seat's operation during a collision. However, seat anti-pinch functions rely on data from the vehicle's environment and the seat's own motor characteristics for judgment and analysis. Currently available seat anti-pinch functions generally suffer from response delays, lack of response, and oversensitivity. Seat anti-pinch is part of passive safety, and its response cycle is relatively long, typically several seconds or more. In-vehicle facial recognition or ultrasonic position sensors, as next-generation in-vehicle and seat position sensors, are used for occupant identification and safety protection. However, facial recognition is primarily used for comparative authentication, and ultrasonic sensors, used for in-vehicle mobile device position sensors, are limited by the complex and unpredictable environment inside the vehicle, hindering widespread application.

[0079] Therefore, the in-depth analysis and research on the active or passive safety of the aforementioned zero-gravity car seats have a certain protective effect on occupants using the zero-gravity function, but they are difficult to meet the protection requirements of the zero-gravity function while the vehicle is in operation.

[0080] This invention introduces an active safety function for a zero-gravity car seat, fundamentally improving the application logic of zero-gravity functions. Based on vehicle operation status monitoring and prediction, it controls the zero-gravity seat's state to provide timely and maximum safety for occupants. This invention relates to a multi-directional electrically adjustable zero-gravity seat with side wing support. A dual-adjustment, high-speed return motor is mounted on the seat's pivot. An active seatbelt pretensioning system is added to the seat. Miniature acceleration sensors are installed at each end of the seat frame. A built-in pressure sensor is located within the seat controller, connected to the gas inside the side wing support airbags to monitor the airbag pressure in real time. The seat motor speed control MOS circuit monitors the vehicle's emergency braking and collision prediction via sensors on the zero-gravity seat, controlling the zero-gravity seat to quickly return to its original position. This reduces the risk of injury to occupants in emergency situations, mitigates potential risks during high-speed vehicle operation, and lowers the probability of injury or death in accidents.

[0081] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0082] Example 1

[0083] This invention provides a zero-gravity active safety seat applied to a mobile vehicle. The zero-gravity active safety seat includes: a seat body, side wing support airbags, a seat controller, an acceleration acquisition mechanism, and a pressure sensor. The acceleration acquisition mechanism is disposed on the seat body. The mobile vehicle is provided with an air source. The air source is connected to the side wing support airbags and is used to inflate and deflate the side wing support airbags. The side wing support airbags are disposed on the seat body. The pressure sensor is used to acquire the air pressure value inside the side wing support airbags and send the air pressure value to the seat controller. The seat body includes: a seat frame and a seat posture adjustment mechanism. The seat posture adjustment mechanism is disposed on the seat frame. The acceleration acquisition mechanism is used to acquire the acceleration of the mobile vehicle. The system calculates the velocity value and sends the acceleration value to the seat controller; the seat posture adjustment mechanism is used to adjust the posture of the zero-gravity active safety seat; the posture of the zero-gravity active safety seat includes: zero-gravity posture and normal posture; both the air source and the seat posture adjustment mechanism are connected to the seat controller; the seat controller determines the motion state of the moving vehicle based on the air pressure value in the side wing support airbags and the acceleration value of the moving vehicle; the motion state of the moving vehicle includes: normal braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, steering or sideslip; the seat controller controls the working state of the air source and / or the working state of the seat posture adjustment mechanism based on the motion state of the moving vehicle.

[0084] Specifically, mobile vehicles can include airplanes, trains, and automobiles, especially new energy vehicles; the seat frame can use high-strength, lightweight materials to ensure structural strength while reducing weight, improving fuel economy and power performance. The seat posture adjustment mechanism includes multi-directional electric adjustment mechanisms such as backrest angle adjustment, seat cushion tilt adjustment, leg rest tilt and extension adjustment, meeting the personalized needs of different passengers.

[0085] Side support airbags are located on the left and right sides of the seat, close to the occupant's body to provide optimal support; the airbags can be quickly inflated or deflated by an air source to adapt to different driving conditions and occupant needs.

[0086] The seat controller receives signals from the acceleration acquisition mechanism and pressure sensor, analyzes and processes them, and then controls the working state of the air source and seat posture adjustment mechanism. In some preferred embodiments of the present invention, the seat controller has self-learning capability and can automatically adjust the seat state according to the occupant's habits and driving environment to improve the riding experience.

[0087] Accelerometers are distributed across key areas of the seat to monitor changes in vehicle acceleration in real time and predict potential collision risks. Pressure sensors are integrated into the side wing airbags to accurately measure the air pressure within the airbags, reflecting the occupant's body displacement.

[0088] See Figure 1The diagram illustrates a zero-gravity active safety seat posture according to an embodiment of the present invention. The right side shows the zero-gravity unfolded posture of the occupant, with the backrest flipped backward, the front of the seat cushion raised upward, and the seat arm flipped upward and extended forward to support the entire leg. In this zero-gravity posture, the seat back and cushion are nearly horizontal, ensuring zero contact between the occupant's body and the seat surface, maximizing the bearing of the occupant's weight, reducing skeletal load, and providing a unique zero-gravity space experience. The left side shows the zero-gravity retracted posture of the occupant, with the backrest, seat cushion, and seat arm all in their normal positions. In this normal posture, the seat returns to a normal sitting position, providing a basis for seatbelt pretensioning and side wing support in high-speed driving or emergency situations.

[0089] When the vehicle is traveling at high speed, the pressure sensors of the seat controller are located in the connection interfaces of the left and right side wing support systems. When the vehicle turns left or right, the occupant's body in the zero-gravity seat experiences centrifugal motion, compressing the left or right side wing support airbags, increasing the pressure within the airbags. The vehicle's steering signal is fed back to the seat controller via the pressure value within the airbags. When the vehicle accelerates forward or backward, sensors on the zero-gravity seat frame collect the acceleration values ​​through built-in piezoelectric and capacitive structures. These acceleration values ​​are fed back to the seat controller via an ADC signal. By monitoring the vehicle's acceleration and steering signals in real time, the system determines whether the zero-gravity seat enters its automatic zero-gravity return position, whether the seatbelts automatically tighten, and whether the active side wing supports automatically inflate. The seat controller transmits the seatbelt webbing tension setting request signal to the active seatbelt system, and the seatbelt webbing automatically tightens to the specified tension value. The seat controller rapidly inflates the side wing support airbags of the zero-gravity seat using the vehicle's air supply. With effective monitoring of vehicle operation, the system provides occupants with the necessary safety mechanisms for active protection through measures such as rapid return to zero-gravity seating position via zero-gravity seats, automatic adjustment and tightening of seat belts, and support provided by side wing airbags.

[0090] When the vehicle is traveling at high speed, the seat can be adjusted according to the occupant's needs via the seat controller, including horizontal forward / backward adjustment, backrest forward / backward adjustment, seat tilt adjustment, leg rest tilt adjustment, and leg rest extension adjustment. The pressure sensors of the seat controller are located within the connection interfaces of the left and right side wing support systems. When the vehicle turns left or right, the occupant's body in the zero-gravity seat experiences centrifugal motion, compressing the left or right side wing support airbags. This increases the pressure within the airbags, triggering the seat controller to rapidly inflate the side wing support airbags via the vehicle's air supply interface. This provides offset support for the occupant's body, offering both physiological and psychological comfort. When sensors on the zero-gravity seat frame detect an increase in the acceleration of the seat and the vehicle, the seat controller outputs a vehicle acceleration signal (acceleration direction and value) to the active seatbelt system. The active seatbelt system automatically adjusts the retraction motor to tighten the seatbelt webbing, adjusting the webbing tension to a specified value.

[0091] The seat controller can analyze braking intensity and collision risk based on data from the acceleration acquisition mechanism, and adjust the seat to the safest state in advance. Based on the collaborative analysis of data collected by the acceleration acquisition mechanism and pressure sensors, it can accurately determine the type and degree of collision and activate corresponding safety protection measures. It can also sense the direction and degree of the occupant's body displacement through the pressure changes of the side support airbags, and combine the steering signals from the acceleration acquisition mechanism to intelligently adjust the inflation volume of the side support airbags and the seat posture to ensure occupant stability.

[0092] Furthermore, when the acceleration sensor value on the seat frame changes, it indicates that the vehicle is accelerating or decelerating. When the acceleration sensor value is less than 0, it indicates that the vehicle is decelerating. The seat controller analyzes the changes in the acceleration sensor value (collecting acceleration values ​​per unit time and comparing multiple collected acceleration values; the acceleration difference over n unit time intervals is Δa = da / dt). When the acceleration value is close to zero and continuously changes between forward and backward acceleration, if the acceleration value is lower than the set value as, it indicates that the vehicle is in a state of intermittent braking or normal deceleration, with no risk of collision, and is performing conventional braking.

[0093] When the acceleration sensor value on the seat frame changes, it indicates that the vehicle is accelerating or decelerating. When the acceleration value changes from greater than 0 to less than 0, and the acceleration sensor value remains less than 0 for n unit time intervals, the acceleration is lower than the set value as, and the acceleration difference Δa = da / dt over n unit time intervals (constantly greater than 0, close to 0) indicates that the vehicle is in an emergency braking state.

[0094] When the acceleration sensor value on the seat frame increases, it indicates that the vehicle is decelerating. If the acceleration sensor value remains less than 0 for n unit time intervals, and the acceleration exceeds the set value as, and the acceleration difference Δa = da / dt over n unit time intervals (constantly greater than as), it indicates that the vehicle is in a collision state, which is a pre-collision state.

[0095] The zero-gravity active safety seat provided in this invention can quickly return from a zero-gravity position to a normal position in an emergency, such as when a pre-collision signal is triggered, and provide maximum protection in conjunction with the seat belt pretensioner; it also provides additional lateral support during steering or skidding to prevent occupants from being thrown out of the seat or hitting hard objects such as car doors due to inertia.

[0096] Furthermore, in some preferred embodiments of the present invention, the zero-gravity active safety seat further includes: an active seat belt system; the active seat belt system includes: seat belt webbing; the active seat belt system is connected to the seat controller; the active seat belt system tightens or releases the seat belt webbing based on the air pressure value in the side wing support airbags and the acceleration value of the moving vehicle.

[0097] Specifically, after recognizing a collision risk, the seat controller will quickly adjust the working state of the retractor motor according to the preset safety logic, so that the seat belt webbing is quickly tightened to an appropriate degree to ensure that the occupant is fully protected during the collision. Especially in the pre-collision state, due to the occupant's forward tilt, the tension of the seat belt increases rapidly, triggering the seat belt warning function, which quickly tightens the seat belt and adjusts it to the set value after the airbag signal is triggered, reducing the probability of injury to the occupant in the collision.

[0098] This invention provides a zero-gravity active safety seat for use in mobile vehicles. The zero-gravity active safety seat includes: a seat body, side support airbags, a seat controller, an acceleration acquisition mechanism, and a pressure sensor. The acceleration acquisition mechanism is mounted on the seat body. The mobile vehicle is equipped with an air source. The air source is connected to the side support airbags and is used to inflate and deflate the side support airbags. The side support airbags are mounted on the seat body. The pressure sensor is used to acquire the air pressure value inside the side support airbags and send the air pressure value to the seat controller. The seat body includes: a seat frame and a seat posture adjustment mechanism. The seat posture adjustment mechanism is mounted on the seat frame. The acceleration acquisition mechanism is used to acquire the acceleration value of the mobile vehicle and send the acceleration value to the seat controller. The seat posture adjustment mechanism is used to adjust the posture of the zero-gravity active safety seat. The posture of the zero-gravity active safety seat includes: a zero-gravity posture and a conventional posture. Both the air source and the seat posture adjustment mechanism are connected to the seat controller. The seat controller determines the motion state of the moving vehicle based on the air pressure value in the side wing support airbags and the acceleration value of the moving vehicle. The motion state of the moving vehicle includes: normal braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, steering, or sideslip. The seat controller controls the working state of the air source and / or the working state of the seat posture adjustment mechanism based on the motion state of the moving vehicle. The operating state information of the moving vehicle is collected by pressure sensors and acceleration acquisition mechanisms set on the zero-gravity active safety seat frame. The operating state of the moving vehicle is analyzed, and the position and posture of the zero-gravity active safety seat and the state of the side wing support airbags are adjusted accordingly. This fundamentally reduces and lowers the incidence and severity of accidents involving occupants, actively reduces the probability of accidents involving occupants, and improves the safety and reliability of the zero-gravity seat under high-speed vehicle operation.

[0099] Example 2

[0100] Based on the above embodiments, this invention provides another zero-gravity active safety seat, see [link to previous embodiment]. Figure 2The schematic diagram of a zero-gravity active safety seat provided by this embodiment of the invention shows a seat controller, an active seat belt system, a seat frame, a side wing support system, and a vehicle air source. The seat controller enables the seat to adjust the horizontal forward / backward position, backrest tilt angle, seat cushion tilt angle, leg rest rotation, and leg rest extension / retraction. The seat controller has built-in MOS circuits and components, and adjusts the output voltage of the MOS circuits through the PWM signal (frequency and duty cycle) output by the domain driver chip, thereby adjusting the rapid return and low-speed adjustment of the backrest and seat cushion tilt angles of the zero-gravity seat. The zero-gravity seat is equipped with a dual-motor structure for the backrest and seat cushion tilt angles. When the vehicle is running at high speed and the seat is in a zero-gravity unfolded state, the zero-gravity seat, under the rapid adjustment state of the MOS circuit, uses the high-speed, high-torque output provided by the dual motors for the backrest and seat cushion tilt angles to quickly return the seat back and seat cushion to a normal sitting posture, providing maximum collision protection for the occupants. The seats feature side wing support systems on both sides, connected to the seat controller. When the vehicle turns left or right, the seat controller uses high-pressure gas from the vehicle's air supply to inflate and deflate the side wing support systems, providing protection during turns. Each side wing support has a built-in pressure sensor at its connection point with the seat controller. During turns, the occupant's body experiences centrifugal force, compressing the side wing airbags and increasing the pressure within them. This increases the pressure, triggering a steering signal that the seat controller uses to determine whether to quickly return to a normal seating position from zero gravity. The seat frame contains multiple acceleration sensors that detect the acceleration of the seat and vehicle in their respective directions. This acceleration, combined with the steering signal, helps the seat controller determine whether to quickly return to a normal seating position from zero gravity. The active seatbelt system includes an ECU (Electronic Control Unit), a retractor motor, and seatbelt webbing. The ECU collects signals from the seat controller indicating seatbelt webbing tightening or loosening, adjusting the retractor's forward or reverse rotation to tighten or loosen the webbing. Based on this, the seat controller uses the seat safety monitoring system's acceleration and pressure sensors to monitor the seat and the corresponding vehicle's operating status and predict accident risks in real time. Utilizing the active safety zero-gravity seat's active seatbelt system, the seat controller's MOS drive circuit, the seat's dual-motor adjustment system, and the side wing support system, it provides rapid zero-gravity seat return while simultaneously offering comprehensive protection through seatbelt webbing tightening and side wing support. From risk prediction and safety mechanism decision-making to multi-layered safety protection mechanisms, it provides maximum protection for occupants, offering maximum protection for zero-gravity seated occupants during high-speed vehicle operation, reducing the probability of accidents and the severity of injuries. See the description below for details.

[0101] In some preferred embodiments of the present invention, the acceleration acquisition mechanism includes: a first acceleration sensor, a second acceleration sensor, and a third acceleration sensor; the seat body also includes: a headrest, a backrest, and a seat cushion; the headrest, backrest, and seat cushion are all fixedly connected to the seat frame; the first acceleration sensor is disposed inside the headrest; the second acceleration sensor is disposed on the seat frame on the left side of the backrest and / or on the seat frame on the right side of the backrest; the third acceleration sensor is disposed on the seat frame on the left side of the seat cushion and / or on the seat frame on the right side of the seat cushion.

[0102] The zero-gravity seat frame has multiple acceleration sensors at each end point, including those located inside the headrest, on the left and right sides of the backrest, and on the left and right sides of the seat cushion frame. The seat controller monitors the analog voltage (ADC) signals output by each sensor to predict the vehicle's operating state. If one acceleration sensor on the seat frame fails, the acceleration and deceleration states of the vehicle can still be identified through acceleration sensors in other locations, thus providing a control basis for whether the zero-gravity seat should quickly return to its original position.

[0103] In some preferred embodiments of the present invention, the seat posture adjustment mechanism includes: a slide rail module, a lifting module, a leg rest adjustment module, a seat cushion tilt angle adjustment module, and a backrest speed adjustment module; the slide rail module is used to adjust the position of the zero-gravity active safety seat; the lifting module is used to adjust the height of the seat cushion of the zero-gravity active safety seat; the leg rest adjustment module is used to adjust the position of the leg rest of the zero-gravity active safety seat; the seat cushion tilt angle adjustment module is used to adjust the tilt angle of the seat cushion of the zero-gravity active safety seat; and the backrest speed adjustment module is used to adjust the tilt angle of the backrest of the zero-gravity active safety seat.

[0104] In some preferred embodiments of the present invention, the leg support adjustment module includes: a first lifting motor and a second lifting motor; the seat cushion tilt speed adjustment module includes: a first seat cushion tilt speed adjustment motor and a second seat cushion tilt speed adjustment motor; the backrest speed adjustment module includes: a first backrest speed adjustment motor and a second backrest speed adjustment motor.

[0105] See Figure 3 The diagram shown in this embodiment of the invention illustrates the location of a speed-adjustable motor. The zero-gravity seat backrest frame is equipped with a dual-motor adjustable backrest. The motors have speed adjustment functions, satisfying both conventional zero-gravity seat unfolding, return adjustment, and backrest adjustment, as well as enabling the seat to quickly retract its backrest within milliseconds. Compared to conventional single-motor zero-gravity seat backrest adjustments on the market, the dual-motor backrest adjustment not only solves the problem of insufficient lifting force under zero gravity but also provides greater load capacity. Simultaneously, it achieves automatic motor speed adjustment, meeting the usage requirements of heavier individuals for zero-gravity seat functions, while also realizing the rapid automatic return function necessary for active safety in zero-gravity seating.

[0106] The zero-gravity seat cushion frame is designed with dual motors to adjust the seat cushion tilt angle. The motors have speed adjustment functions, which not only meet the conventional zero-gravity seat unfolding, return adjustment, and seat cushion tilt angle adjustment, but also enable the seat to achieve rapid zero-gravity seat cushion return within milliseconds. Compared with the conventional single-motor seat cushion tilt adjustment of zero-gravity seats on the market, the dual-motor seat cushion tilt adjustment not only solves the problem of insufficient lifting force under zero-gravity seat tilt, but also provides greater load capacity through dual-motor adjustment. At the same time, it realizes the function of automatic motor speed adjustment, which meets the usage requirements of the zero-gravity seat function for people with larger body weight, and realizes the rapid automatic return function necessary for the active safety of the zero-gravity seat.

[0107] In some preferred embodiments of the present invention, the seat controller includes: a domain drive chip and a relay circuit; the domain drive chip is connected to the relay circuit; the relay circuit is connected to the slide rail module, the leg support adjustment module, the lift module, and the seat cushion tilt speed adjustment module; the domain drive chip is used to control the slide rail module, the leg support adjustment module, the lift module, and the seat cushion tilt speed adjustment module through the relay circuit.

[0108] In some preferred embodiments of the present invention, the seat controller further includes: a MOS circuit; the MOS circuit is connected to the backrest speed control module; and a domain drive chip is used to control the backrest speed control module connection through the MOS circuit.

[0109] In some preferred embodiments of the present invention, the MOS circuit includes: a first MOS driver, a second MOS driver, a third MOS driver, and a fourth MOS driver; the first MOS driver, the second MOS driver, the third MOS driver, and the fourth MOS driver are all connected to the domain driver chip; the first MOS driver and the second MOS driver are both connected to one end of the backrest speed-regulating motor; the third MOS driver and the fourth MOS driver are both connected to the other end of the backrest speed-regulating motor; the domain driver chip controls the state of the first MOS driver, the second MOS driver, the third MOS driver, and the fourth MOS driver through the output PWM signal, so as to make the backrest speed-regulating motor rotate forward or reverse.

[0110] The seat motor's fast and slow speed adjustment is achieved through the seat controller. The main chip (domain driver chip) of the seat controller outputs PWM signals (duty cycle and frequency) with a duty cycle of 5%-95% and a frequency of 10-500Hz. The main chip controls the input and output levels of the speed-regulating motor through MOS driver 1, MOS driver 2, MOS driver 3, and MOS driver 4, controlling the voltage (level difference) across the motor and indirectly regulating the voltage changes applied to the motor to achieve the motor speed regulation control requirements. Ultimately, this enables the seat to quickly return to its original position. This method significantly improves the automatic return speed of the zero-gravity seat. Compared to conventional zero-gravity seats on the market, the automatic return function of this design can be controlled within milliseconds, increasing the speed by more than 40 times. This allows for rapid return to the original position under high-speed pre-collision conditions based on the seat acceleration sensor. The MOS driver achieves arbitrary speed adjustment and high / low speed adjustment of the motor through the frequency and duty cycle of the PWM on the gate. Conventional relay circuits can only achieve on / off switching and cannot achieve speed regulation.

[0111] See figure Figure 4 The illustrated embodiment of the present invention provides a control principle diagram for a speed-regulating motor. The MOS drivers are grouped as follows: Group A consists of MOS driver 1 and MOS driver 3; Group B consists of MOS driver 2 and MOS driver 4. MOS transistors in the same group cannot be turned on simultaneously. The motor operates in two modes: when MOS driver 1 and MOS driver 4 are on, the speed-regulating motor rotates forward, allowing the seat to adjust forward or backward; when MOS driver 2 and MOS driver 3 are on, the speed-regulating motor rotates backward, allowing the seat to adjust forward or backward.

[0112] In some preferred embodiments of the present invention, the active seat belt system further includes: an electronic controller and a retraction motor; the electronic controller is connected to the seat controller; the electronic controller is used to control the retraction motor to tighten or release the seat belt webbing based on the air pressure value in the side wing support airbags and the acceleration value of the moving vehicle.

[0113] For details, see Figure 5The illustrated embodiment of the invention provides a control principle diagram of a zero-gravity active safety seat. Each end point of the seat frame includes multiple acceleration sensors. These sensors generate analog voltages through built-in capacitor structures and piezoelectric modules. Under the action of inertial force, these analog voltages are sampled and analyzed by an ADC and transmitted to the seat controller. The seat controller analyzes the acceleration values ​​at each end point of the seat to determine whether the vehicle is in a state of normal braking, emergency braking, or pre-collision. The seat controller is located at the bottom of the seat and, combined with the acceleration values ​​at each end point of the seat frame, analyzes for even slight seat displacements. This allows for timely control of the zero-gravity seat to return to its original position if the vehicle is in a state of rapid turning or sideslip. During vehicle cornering, inertia causes occupants to shift to one side of the seat, especially in zero-gravity seating mode where the seat cushion and backrest are nearly horizontal (bed mode). Because the seat edges provide primary restraint during cornering, occupants are at risk of lateral slippage. The side wing support structure provides effective anti-slip protection in a zero-gravity state, improving the occupant's zero-gravity experience. Pressure sensors are installed at the ends of the airbags in the side wing support. When the airbags are compressed by the occupant's lateral slippage, the air pressure changes significantly. The pressure sensors convert this pressure into an analog voltage value via an internal pressure chip, which is then fed back to the seat controller. The seat controller uses the difference and rate of pressure change in the side wing support airbags to determine if there is a risk of lateral slippage or downward movement. This triggers a rapid seat return mechanism, quickly restoring the seat from a zero-gravity state to a normal seating position, mitigating the risk of lateral slippage and injury.

[0114] The active safety pretensioning system for seats adds a built-in ECU module and a retractor motor to the conventional seat belt system. The ECU module monitors the webbing tension in real time and automatically adjusts the seat belt webbing to the set pretension range based on the occupant's body shape and the retractor motor. When the vehicle is braking, decelerating, turning, or skidding, due to the relative movement between the occupant's posture and the seat, the ECU analyzes the seat belt tension value to determine whether the webbing is too loose or too tight. Then, it adjusts the webbing tension through the retractor motor to provide appropriate restraint force for the occupant, fundamentally improving the seat belt restraint effect differences caused by various vehicle operating conditions in zero gravity.

[0115] When a vehicle is in a pre-collision situation, due to inertia, the occupants lean forward, causing the seatbelt tension to increase rapidly. This triggers the seatbelt warning function, causing the seatbelt to tighten quickly. After the airbag signal is triggered, the seatbelt webbing adjusts to the set value (after the collision has ended), reducing the probability of injury and death to the occupants during the collision. This increases the restraint safety of the seatbelt and improves the warning effect. The active seat pretensioning system requires automakers to calibrate the retractor motor, built-in ECU, and pretensioning parameters based on crash test data to meet seatbelt pretensioning requirements under various vehicle operating conditions, ensuring both occupant comfort and necessary safety protection.

[0116] Further, see Figure 6 The diagram shown is a schematic of a zero-gravity active safety seat sensor setup provided by an embodiment of the present invention. The zero-gravity seat frame has multiple acceleration sensors at each end point. The acceleration sensors have built-in capacitor structures and piezoelectric modules. The seat generates an analog voltage when the vehicle brakes and under the action of inertial force. The analog voltage is then sampled and analyzed by an ADC and transmitted to the seat controller. The seat controller analyzes whether the vehicle is in a normal braking, emergency braking, or pre-collision state by using the acceleration values ​​at each point of the seat end point.

[0117] When the vehicle is turning or skidding, the accelerometer on the seat frame collects acceleration values ​​and simultaneously collects pressure changes within the side wing support airbags connected to the side wing airbag connectors. This analysis determines whether the vehicle is accelerating, decelerating, or turning. When the vehicle is turning, the occupant in the seat, due to inertia and centrifugal force, compresses the side wing airbags. The controller detects an increase in pressure in the left or right side wing airbag, thus determining whether the vehicle is turning right, left, or skidding. The accelerometer on the frame uses internal capacitive and piezoelectric elements to monitor changes in vehicle acceleration. The sensor determines whether the vehicle is accelerating forward or backward based on an increase or decrease in capacitance, indirectly monitoring whether the vehicle is accelerating or decelerating. When the vehicle's steering changes, the seat controller inflates the side wing support airbags, causing the side wing to rise and provide lateral support to the occupant, thereby improving occupant comfort.

[0118] The seat controller incorporates a pressure sensor chip to monitor the air pressure in the side wing airbags in real time and provides feedback on whether the air pressure from the vehicle's input air source is within the normal range, preventing damage to the side wing support airbags. Meanwhile, the vehicle's air pressure is generally above 1.5 MPa; this high pressure allows for rapid inflation of the side wing support airbags, providing responsive side support. With the zero-gravity seat deployed, the seat controller monitors the side wing support airbag pressure in real time. When the controller is not inflating the side wing support airbags, an increase in side wing pressure is detected by the acceleration sensor, indicating an increase in rearward acceleration. If the acceleration value output by the speed sensor remains positive or negative for several seconds, and the rate of change of acceleration is consistently greater than 0, the controller determines that the vehicle is within the pre-collision range. The seat uses a zero-gravity rapid return function to return to a normal seating position within milliseconds. The active seatbelt pretensioner tightens the seatbelt webbing based on the pre-collision signal and maintains it for several seconds, thus providing active safety protection for occupants in zero-gravity conditions.

[0119] This invention provides a zero-gravity active safety seat with side wing protection support. A dual-adjustment, high-speed return motor is mounted on the seat's pivot. A seatbelt pretensioner is added to the seat. Miniature acceleration sensors are installed at each end of the seat frame. A pressure sensor is located within the seat controller. A speed-regulating MOS circuit for the seat motor is also included. By monitoring emergency braking and collision prediction of the vehicle through sensors on the zero-gravity seat, the system controls the zero-gravity seat to return to its original position quickly. This reduces the degree of injury to occupants in emergency situations, mitigates potential risks associated with the seat during high-speed vehicle operation, and lowers the probability of injury or death in accidents.

[0120] This invention utilizes dual adjustable motors to provide high torque and high speed performance for the zero-gravity seat during automatic return, thus overcoming the problems of long automatic return time and insufficient adjustment torque in conventional zero-gravity seats on the market. Building upon this, acceleration sensors are arranged in the frame to actively monitor the vehicle's operating status and analyze the vehicle's collision risk based on acceleration values ​​and changes in acceleration. In the event of an active collision prediction, the speed-regulating motor and MOS drive circuit enable the zero-gravity seat to automatically return to a normal seating position within milliseconds, and the seatbelt automatically tightens and maintains its position for several seconds via a retraction motor, thus providing active protection for the occupant. The arrangement of multiple acceleration sensors not only reduces the risk of occasional sensor failures that could degrade active safety performance but also analyzes the data differences between the sensors, thereby reducing the risk of misjudgment or delayed response of the seat controller system regarding the vehicle's status.

[0121] This zero-gravity seat features side wing support, and the pressure sensors built into the seat controller monitor the airbag pressure in real time. This not only provides support for occupants to prevent body displacement due to inertia and centrifugal force during vehicle steering, thus improving occupant comfort in the zero-gravity state, but also correlates changes in sensor pressure with the direction of occupant body displacement. This allows for prediction of whether the vehicle is steering or skidding (side collision risk). Combined with acceleration values ​​and changes in acceleration from the acceleration sensor, the system analyzes the risk of a side collision, triggering the seat's zero-gravity return and automatic seatbelt tightening. This fundamentally reduces the likelihood and severity of accidents resulting in occupant injury or death, proactively lowering the probability of accidents and improving the safety and reliability of the zero-gravity seat during high-speed vehicle operation.

[0122] Example 3

[0123] Based on the above embodiments, this invention provides a control method for a zero-gravity active safety seat, applied to the seat controller of a zero-gravity active safety seat. (See also...) Figure 7 The flowchart shown is a control method for a zero-gravity active safety seat provided by an embodiment of the present invention. The method includes:

[0124] Step S302: Control the acceleration acquisition mechanism to acquire the acceleration value of the moving vehicle, and control the pressure sensor to acquire the air pressure value inside the side support airbag.

[0125] Step S304: Determine the motion state of the mobile vehicle based on the air pressure value inside the side wing support airbags and the acceleration value of the mobile vehicle; wherein, the motion state of the mobile vehicle includes: normal braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, steering or sideslip.

[0126] Step S306: Control the working state of the air source and / or the working state of the seat posture adjustment mechanism based on the motion state of the mobile vehicle.

[0127] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the control method of the zero-gravity active safety seat described above can be referred to the corresponding process in the aforementioned embodiments of the zero-gravity active safety seat, and will not be repeated here.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A zero-gravity active safety seat, characterized in that, For use in mobile vehicles, the zero-gravity active safety seat includes: a seat body, side wing support airbags, a seat controller, an acceleration acquisition mechanism, and a pressure sensor; The acceleration acquisition mechanism is mounted on the seat body; The mobile vehicle is equipped with an air source; the air source is connected to the side wing support air bag, and the air source is used to inflate and deflate the side wing support air bag; The side wing support airbags are disposed on the seat body; The pressure sensor is used to acquire the air pressure value inside the side wing support airbag and send the air pressure value to the seat controller; The seat body includes: a seat frame and a seat posture adjustment mechanism; The seat posture adjustment mechanism is mounted on the seat frame; The acceleration acquisition mechanism is used to acquire the acceleration value of the mobile vehicle and send the acceleration value to the seat controller; The seat posture adjustment mechanism is used to adjust the posture of the zero-gravity active safety seat; wherein, the posture of the zero-gravity active safety seat includes: zero-gravity posture and normal posture; Both the air source and the seat posture adjustment mechanism are connected to the seat controller; The seat controller determines the motion state of the mobile vehicle based on the air pressure value in the side wing support airbags and the acceleration value of the mobile vehicle; wherein, the motion state of the mobile vehicle includes: normal braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, steering or sideslip; The seat controller controls the working state of the air source and / or the working state of the seat posture adjustment mechanism based on the motion state of the mobile vehicle. The acceleration acquisition mechanism includes: a first acceleration sensor, a second acceleration sensor, and a third acceleration sensor; The seat body also includes: a headrest, a backrest, and a seat cushion; The headrest, the backrest, and the seat cushion are all fixedly connected to the seat frame; The first acceleration sensor is disposed inside the headrest; The second acceleration sensor is disposed on the seat frame on the left side of the backrest and / or on the seat frame on the right side of the backrest; The third acceleration sensor is disposed on the seat frame on the left side of the seat cushion and / or on the seat frame on the right side of the seat cushion.

2. The zero-gravity active safety seat according to claim 1, characterized in that, The seat posture adjustment mechanism includes: a slide rail module, a lifting module, a leg support adjustment module, a seat cushion tilt speed adjustment module, and a backrest speed adjustment module; The slide rail module is used to adjust the position of the zero-gravity active safety seat; The lifting module is used to adjust the height of the seat cushion of the zero-gravity active safety seat; The leg rest adjustment module is used to adjust the position of the leg rest of the zero-gravity active safety seat; The seat cushion tilt angle adjustment module is used to adjust the tilt angle of the seat cushion of the zero gravity active safety seat. The backrest speed adjustment module is used to adjust the tilt angle of the backrest of the zero-gravity active safety seat.

3. The zero-gravity active safety seat according to claim 2, characterized in that, The leg support adjustment module includes: a first lifting motor and a second lifting motor; The seat cushion tilt speed control module includes: a first seat cushion tilt speed control motor and a second seat cushion tilt speed control motor. The backrest speed control module includes: a first backrest speed control motor and a second backrest speed control motor.

4. The zero-gravity active safety seat according to claim 3, characterized in that, The seat controller includes: a domain driver chip and a relay circuit; The domain driver chip is connected to the relay circuit; The relay circuit is connected to the slide rail module, the leg support adjustment module, the lifting module, and the seat cushion tilt speed adjustment module; The domain drive chip is used to control the slide rail module, the leg support adjustment module, the lifting module, and the seat cushion tilt speed adjustment module through the relay circuit.

5. The zero-gravity active safety seat according to claim 4, characterized in that, The seat controller also includes: a MOS circuit; The MOS circuit is connected to the backrest speed control module; The domain drive chip is used to control the connection of the backrest speed control module through the MOS circuit.

6. The zero-gravity active safety seat according to claim 5, characterized in that, The MOS circuit includes: a first MOS driver, a second MOS driver, a third MOS driver, and a fourth MOS driver; The first MOS driver, the second MOS driver, the third MOS driver, and the fourth MOS driver are all connected to the domain driver chip; Both the first MOS driver and the second MOS driver are connected to one end of the backrest speed-regulating motor. Both the third MOS driver and the fourth MOS driver are connected to the other end of the backrest speed control motor. The domain drive chip controls the state of the first MOS drive, the second MOS drive, the third MOS drive, and the fourth MOS drive through the output PWM signal, so as to make the backrest speed control motor rotate forward or reverse.

7. The zero-gravity active safety seat according to claim 1, characterized in that, The zero-gravity active safety seat also includes: an active seat belt system; The active seat belt system includes: seat belt webbing; The active seatbelt system is connected to the seat controller; The active seatbelt system tightens or releases the seatbelt webbing based on the air pressure inside the side support airbags and the acceleration of the moving vehicle.

8. The zero-gravity active safety seat according to claim 7, characterized in that, The active seatbelt system also includes: an electronic controller and a retraction motor; The electronic controller is connected to the seat controller; The electronic controller is used to control the rewind motor to tighten or release the seat belt webbing based on the air pressure value inside the side support airbag and the acceleration value of the moving vehicle.

9. A control method for a zero-gravity active safety seat, characterized in that, The seat controller applied to the zero-gravity active safety seat includes: The acceleration acquisition mechanism is controlled to collect the acceleration value of the moving vehicle, and the pressure sensor is controlled to collect the air pressure value inside the side support airbags; The motion state of the mobile vehicle is determined based on the air pressure value inside the side support airbags and the acceleration value of the mobile vehicle; wherein, the motion state of the mobile vehicle includes: normal braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, turning or sideslip; The working state of the air source and / or the working state of the seat posture adjustment mechanism are controlled based on the motion state of the mobile vehicle. The acceleration acquisition mechanism includes a first acceleration sensor, a second acceleration sensor, and a third acceleration sensor; the seat body also includes a headrest, a backrest, and a seat cushion; the headrest, the backrest, and the seat cushion are all fixedly connected to the seat frame; the first acceleration sensor is disposed inside the headrest; the second acceleration sensor is disposed on the seat frame on the left side of the backrest and / or on the seat frame on the right side of the backrest; the third acceleration sensor is disposed on the seat frame on the left side of the seat cushion and / or on the seat frame on the right side of the seat cushion.

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