Zero-gravity active safety seat and control method of zero-gravity active safety seat

Abstract

The invention provides a zero-gravity active safety seat and a control method of the zero-gravity active safety seat, is applied to a mobile carrier, and relates 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 movable 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 movable carrier. By analyzing the running state of the mobile carrier, the pose of the zero-gravity active safety seat and the state of the side wing supporting air bag are adjusted, the accident and degree of casualties of passengers are fundamentally reduced, the probability of accidents of the passengers is actively reduced, and the safety and reliability of the zero-gravity seat under high-speed running of the vehicle are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of safety seats, and in particular to a zero-gravity active safety seat and a control method for the zero-gravity active safety seat. Background Art

[0002] Zero-gravity seats achieve zero contact between the occupant's body and the seat surface by adjusting the cushion inclination, backrest angle, leg rest extension and flipping, so that the seat can bear the gravity of the occupant's body to the greatest extent, reduce the load on the occupant's bones, and let the occupant feel a different zero-gravity space experience. When the seat is in zero-gravity state, the occupant's posture is in a nearly lying state, and the seat belt's protective effect on the occupant is greatly reduced. In addition, when the vehicle is braking or colliding at high speed, the occupant is at risk of diving (sliding), increasing the risk of occupant displacement and collision. Therefore, the safety of using the zero-gravity function during driving is greatly limited.

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

[0004] In-vehicle portrait recognition or ultrasonic position sensors, as a new generation of in-vehicle and seat position sensors, are used in occupant recognition and safety protection. However, portrait recognition is generally used for comparative authentication, and ultrasonic sensors are used as in-vehicle mobile device position sensors. Due to the complex and convenient environmental factors in the car, they are difficult to be widely used. 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 a zero-gravity active safety seat, which collects the operating status information of a mobile vehicle through a pressure sensor and an acceleration collection mechanism arranged on the zero-gravity active safety seat frame, analyzes the operating status of the mobile vehicle, and then adjusts the posture of the zero-gravity active safety seat and the status of the side support airbags, fundamentally reducing and lowering the accidents and degree of casualties of occupants, actively reducing the probability of accidents of occupants, and improving the safety and reliability of the zero-gravity seat under high-speed operation of the vehicle.

[0006] In a first aspect, the present invention provides a zero-gravity active safety seat, which is applied to a mobile vehicle. The zero-gravity active safety seat includes: a seat body, a side wing support airbag, a seat controller, an acceleration acquisition mechanism and a pressure sensor;

[0007] The acceleration collection mechanism is arranged on the seat body;

[0008] The mobile carrier is provided with an air source; the air source is connected to the wing support air bag, and the air source is used to inflate and deflate the wing support air bag;

[0009] The side support airbags are arranged on the seat body;

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

[0011] The seat body includes: a seat frame and a seat posture adjustment mechanism;

[0012] The seat posture adjustment mechanism is arranged on the seat frame;

[0013] The acceleration acquisition mechanism is used to obtain the acceleration value of the mobile vehicle and send the acceleration value to the seat controller;

[0014] 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;

[0015] The air source and the seat posture adjustment mechanism are both connected to the seat controller;

[0016] The seat controller determines the motion state of the mobile vehicle based on the air pressure value in the wing support airbag and the acceleration value of the mobile vehicle; wherein the motion state of the mobile vehicle includes: conventional braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, steering or side sliding;

[0017] 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.

[0018] 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;

[0019] The seat body also includes: a headrest, a backrest and a seat cushion;

[0020] The headrest, backrest and seat cushion are all fixedly connected to the seat frame;

[0021] The first acceleration sensor is arranged inside the headrest;

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

[0023] The third acceleration sensor is arranged 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.

[0024] In some preferred embodiments of the present invention, the seat posture adjustment mechanism includes: a slide rail module, a lifting module, a leg support adjustment module, a seat cushion inclination speed adjustment module and a backrest speed adjustment module;

[0025] Slide rail module, used to adjust the position of the zero-gravity active safety seat;

[0026] A lifting module for adjusting the height of the seat cushion of the zero-gravity active safety seat;

[0027] A leg rest adjustment module, used to adjust the position of the leg rest of the zero-gravity active safety seat;

[0028] A seat cushion inclination speed control module is used to adjust the inclination of the seat cushion of the zero-gravity active safety seat;

[0029] The backrest speed adjustment module is used to adjust the inclination angle of the backrest of the zero-gravity active safety seat.

[0030] In some preferred embodiments of the present invention, the leg support adjustment module includes: a first lifting motor and a second lifting motor;

[0031] The seat cushion tilt speed regulating module includes: a first seat cushion tilt speed regulating motor and a second seat cushion tilt speed regulating motor;

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

[0033] In some preferred embodiments of the present invention, the seat controller includes: a domain drive chip and a relay circuit;

[0034] The domain drive chip is connected to the relay circuit;

[0035] The relay circuit is connected with the slide rail module, the leg support adjustment module, the lifting module and the seat cushion inclination speed control module;

[0036] The domain drive chip is used to control the slide rail module, leg rest adjustment module, lifting module and seat cushion inclination speed control module through the relay circuit.

[0037] In some preferred embodiments of the present invention, the seat controller further comprises: a MOS circuit;

[0038] The MOS circuit is connected to the backrest speed control module;

[0039] The domain drive chip is used to control the connection of the backrest speed control module through the MOS circuit.

[0040] 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;

[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] The first MOS driver and the second MOS driver are both connected to one end of the backrest speed regulating motor;

[0043] The third MOS driver and the fourth MOS driver are both connected to the other end of the backrest speed regulating motor;

[0044] The domain drive chip controls the states of the first MOS drive, the second MOS drive, the third MOS drive and the fourth MOS drive through the output PWM signal to make the backrest speed regulating motor run forward or reverse.

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

[0046] The active seatbelt system includes: seatbelt webbing;

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

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

[0049] In some preferred embodiments of the present invention, the active seat belt system further comprises: an electronic controller and a retracting motor;

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

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

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

[0053] Controlling the acceleration collection mechanism to collect the acceleration value of the mobile vehicle, and controlling the pressure sensor to collect the air pressure value in the wing support air bag;

[0054] Determining the motion state of the mobile vehicle based on the air pressure value in the side support airbag and the acceleration value of the mobile vehicle; wherein the motion state of the mobile vehicle includes: conventional braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, steering or sideslip;

[0055] 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.

[0056] The present invention brings the following beneficial effects:

[0057] The present invention provides a zero-gravity active safety seat and a control method for a zero-gravity active safety seat, which are applied to a mobile vehicle. The zero-gravity active safety seat comprises: a seat body, wing support air bags, a seat controller, an acceleration acquisition mechanism and a pressure sensor; the acceleration acquisition mechanism is arranged on the seat body; the mobile vehicle is provided with an air source; the air source is connected to the wing support air bags, and the air source is used to inflate and deflate the wing support air bags; the wing support air bags are arranged on the seat body; the pressure sensor is used to obtain the air pressure value in the wing support air bags and send the air pressure value to the seat controller; the seat body comprises: a seat frame and a seat posture adjustment mechanism; the seat posture adjustment mechanism is arranged on the seat frame; the acceleration acquisition mechanism is used to obtain 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 comprises: zero-gravity posture posture and normal posture; the air source and the seat posture adjustment mechanism are both 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 airbag 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 operating state information of the mobile vehicle is collected through the pressure sensor and the acceleration collection mechanism arranged on the zero-gravity active safety seat frame, the operating state of the mobile vehicle is analyzed, and then the posture of the zero-gravity active safety seat and the state of the side wing support airbag are adjusted, so as to fundamentally reduce and reduce the accidents and degree of casualties of the occupants, actively reduce the probability of accidents of the occupants, and improve the safety and reliability of the zero-gravity seat under high-speed operation of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

[0061] Figure 3A schematic diagram of the position of a speed regulating motor provided by an embodiment of the present invention;

[0062] Figure 4 A speed regulating motor control principle diagram provided by an embodiment of the present invention;

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

[0064] Figure 6 A schematic diagram of a zero-gravity active safety seat sensor arrangement provided by an embodiment of the present invention;

[0065] Figure 7 The present invention provides a flowchart of a method for controlling a zero-gravity active safety seat. DETAILED DESCRIPTION

[0066] 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. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0067] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying 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 creative work are within the scope of protection of the present invention.

[0068] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0069] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0070] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0071] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] With the rapid development of the new energy electric vehicle industry at home and abroad, new energy vehicles are becoming more and more popular at home and abroad. The interior space of new energy vehicles is larger, which is more conducive to the layout design of complex multifunctional intelligent seats, satisfying the riding experience of different groups of people and expanding new energy vehicles into people's second space. At present, zero-gravity seats, as a highlight of new energy vehicle companies, have attracted more and more attention from automobile companies, and have also expanded the configuration of zero-gravity seats on new energy vehicles. Zero-gravity seats are gradually extending and expanding to mid- and low-end cars to meet the needs of more people for zero-gravity riding. Zero-gravity seats achieve zero contact between the occupant's body parts and the seat surface by adjusting the seat cushion inclination, backrest angle, leg rest extension and flipping postures, so that the seat can bear the gravity of the occupant's various parts to the greatest extent, reduce the load on the occupant's bones, and let the occupant feel a different zero-gravity space experience from the senses.

[0073] Although the current zero-gravity seats are gradually becoming popular in the new energy vehicle industry, judging from the frequency of application and working condition data of zero-gravity seats by many new energy vehicle companies, automobile zero-gravity seats are mainly applicable in parking or low-speed operation environments, and most new energy vehicles with zero gravity use this function far less frequently than the estimated value of the car. The reason for this is that when the seat is in zero-gravity state, the occupant's posture is in a nearly lying state, and the seat belt's protective effect on the occupant is greatly reduced. In addition, when the vehicle is in emergency braking or collision at high speed, the occupant is at risk of diving (sliding), increasing the risk of occupant displacement and collision. Therefore, the safety of the zero-gravity function during driving is greatly limited. In the parking state, the occupant sits in the car for too long, and needs to get out of the seat to exercise or stretch the cervical vertebrae to relieve fatigue, while the zero-gravity seat is more suitable for scenes such as naps and lunch breaks.

[0074] Among the currently known types of automobile collision accidents, the more common ones are: frontal collision, side collision, and rear collision. The probability of frontal collision accounts for a high proportion, exceeding 40% of the total accidents, and the severity of casualties in accidents is much higher than that of side collision and rear collision. Especially when the seats with zero gravity are deployed, the probability of accidents will only increase, resulting in a further increase in the probability of secondary collisions of the occupants, which greatly limits the promotion and popularization of zero-gravity seat functions in the automotive industry. Therefore, the demand for the use of zero-gravity functions during vehicle operation and its own functional safety have become the fundamental contradictions in its use. How to solve the active safety of zero-gravity seats has become a key factor for seat companies or new energy vehicle companies to stand out in the field of cabin comfort.

[0075] Although the zero-gravity seat function poses some accident risks in terms of vehicle operation safety, the seat's zero-gravity function is an objective reflection of people's demand for car seat comfort and an important source of technological innovation for car seats. Therefore, through technological innovation, the safety factors caused by zero-gravity seats can be reduced, which not only ensures the passengers' demand for the use of the zero-gravity seat function, but also improves the active safety of the zero-gravity seat itself, thereby compensating for the risks in use to a certain extent.

[0076] Many new energy vehicle manufacturers have increased their measures to protect passengers. They have not only improved the vehicle's collision energy absorption design through the structural design of the body-in-white, but also further optimized the airbag layout in the car. At present, many new energy vehicle seats have added side airbags to protect passengers, and multiple airbags have been added to the door side to further reduce the risk of casualties in accident collisions. However, for the zero-gravity seats in the middle row, after the seats are deployed in zero gravity, the posture of the passengers and the position of the seats overlap less with the airbag protection area, so the airbag's protective effect on the passengers on the seats is weakened to a certain extent. Therefore, many vehicles have developed the zero-gravity deployment function when running at high speeds, and many passengers have not experienced the zero-gravity function for a long time when the vehicle is running at high speeds.

[0077] A lot of research has also been done on the active safety of seats. For example, vehicle signals are collected through external radar sensors, speed sensors, and other vehicle signals to determine whether the vehicle is in a risky state, so as to actively adjust the state of the seat and provide protection for the occupants to a certain extent. However, external radar and body sensor signals are affected by many factors in the external environment. For example, obstacles, weather changes, and road bumps may cause delays in signal transmission and signal processing. There may also be risks of misjudgment or non-response due to interference from internal and external signals. At the same time, some signals are difficult to open to seat suppliers, especially radar sensor signals (which affect the vehicle's collection of radar data), which to a certain extent restricts its application and research.

[0078] The seat anti-pinch function is derived and extended from the window anti-pinch function, and is also widely used in seats. By calibrating the anti-pinch force to contact the human body, the seat can be actively controlled during the collision. However, the seat anti-pinch function relies on the body environment and the motor characteristic data of the seat itself for judgment and analysis. The current seat anti-pinch function on the market generally has problems such as response delay, no response, and over-sensitivity. The seat anti-pinch function is part of passive safety, and the response cycle is relatively long, generally more than a few seconds. In-car portrait recognition or ultrasonic position sensors are used as a new generation of in-car and seat position sensors for occupant recognition and safety protection. However, portrait recognition is generally used for comparison and certification, and ultrasonic sensors are used for in-car mobile device position sensors. They are subject to complex and convenient environmental factors in the car and are difficult to be widely used.

[0079] Therefore, the in-depth analysis and research on the active or passive safety of the above-mentioned automobile zero-gravity seats have a certain effect on the protection of passengers using the zero-gravity function, but it is difficult to meet the zero-gravity function protection needs when the vehicle is in operation.

[0080] The present invention fundamentally improves the zero-gravity function application logic by introducing the active safety function of the zero-gravity seat of the automobile, and controls the state of the zero-gravity seat according to the vehicle operation state monitoring and state prediction to provide the safety requirements required by the occupants in a timely and maximum manner. The present invention relates to a zero-gravity seat with multi-directional electric adjustment, and has a wing protection support function. A double-adjustment high-speed return motor is arranged on the seat shaft, an active seat belt pre-tensioning system is added to the seat, and each end of the seat frame is provided with a micro-acceleration sensor. A built-in pressure sensor is arranged in the seat controller, and the pressure sensor is connected to the gas in the wing support airbag to monitor the pressure value in the airbag in real time. The seat motor speed control MOS circuit monitors the emergency braking of the whole vehicle and the accident collision prediction through the sensor on the zero-gravity seat, controls the zero-gravity seat to return quickly, reduces the degree of damage to the occupants in an emergency situation caused by the zero-gravity seat, compensates for the potential risks of the seat in the high-speed operation of the whole vehicle, and reduces the probability of casualties in accidents.

[0081] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0082] Embodiment 1

[0083] The embodiment of the present invention provides a zero-gravity active safety seat, which is applied to a mobile vehicle. The zero-gravity active safety seat includes: a seat body, a wing support air bag, a seat controller, an acceleration acquisition mechanism and a pressure sensor; the acceleration acquisition mechanism is arranged on the seat body; the mobile vehicle is provided with an air source; the air source is connected to the wing support air bag, and the air source is used to inflate and deflate the wing support air bag; the wing support air bag is arranged on the seat body; the pressure sensor is used to obtain the air pressure value in the wing support air bag 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 arranged on the seat frame; the acceleration acquisition mechanism is used to obtain the acceleration of the mobile vehicle The speed value is determined, and the acceleration value is sent 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; the air source and the seat posture adjustment mechanism are both 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 support airbag 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 sideslipping; 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.

[0084] Specifically, mobile vehicles can be airplanes, trains and cars, especially new energy vehicles; the seat frame can be made of 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 flip and telescopic adjustment to meet the personalized needs of different passengers.

[0085] The side support air bags are located on the left and right sides of the seats, close to the occupants' bodies to provide optimal support; the air bags are quickly inflated or deflated through an air source to adapt to different driving conditions and occupant needs.

[0086] The seat controller receives signals from the acceleration acquisition mechanism and the pressure sensor, and controls the working status of the air source and the seat posture adjustment mechanism after analysis and processing; in some preferred embodiments of the present invention, the seat controller has self-learning ability, and can automatically adjust the seat status according to the passenger habits and driving environment to enhance the riding experience.

[0087] Acceleration acquisition mechanisms are distributed in key parts of the seats to monitor the acceleration changes of the vehicle in real time and predict possible collision risks. The measuring end of the pressure sensor is built into the side wing support airbag to accurately measure the air pressure value in the airbag and reflect the displacement of the occupant's body.

[0088] See also Figure 1The illustrated embodiment of the present invention provides a zero-gravity active safety seat posture schematic diagram. The right side shows the zero-gravity deployment state of the member's sitting posture, with the backrest flipped backward, the front of the seat cushion lifted upward, and the push-off flipped upward and extended forward to support the entire leg. In the zero-gravity posture, the seat back and seat cushion are close to horizontal, so that all parts of the occupant's body have zero contact with the seat surface, and the gravity of all parts of the occupant is borne to the greatest extent, reducing the load on the bones, and providing a different zero-gravity space experience. The left side shows the zero-gravity retracted state of the member's sitting posture, with the backrest, seat cushion and push-off all in the normal position. In the normal position, the seat returns to the normal sitting position, providing a basis for pre-tightening the seat belt and side wing support in high-speed driving or emergency situations.

[0089] When the vehicle is in high-speed operation, the pressure sensor of the seat controller is set in the connection interface of the left and right wing support systems of the seat. When the vehicle has the function of turning left or right, the body of the occupant on the zero-gravity seat squeezes the left or right wing support airbag of the seat due to centrifugal motion, resulting in an increase in the pressure in the airbag, and the vehicle steering signal is fed back to the seat controller through the pressure value in the airbag. When the vehicle accelerates forward or backward, the sensor on the zero-gravity seat frame collects the acceleration value of the vehicle's forward acceleration or backward acceleration through the built-in piezoelectric structure and capacitor structure, and the vehicle acceleration value is fed back to the seat controller through the ADC signal. By real-time monitoring of the vehicle's acceleration and steering signal, it is decided whether the zero-gravity seat enters the zero-gravity automatic return position, whether the seat belt is automatically tightened, and the active wing support is automatically inflated. The seat controller transmits the seat belt webbing tension gear demand signal to the active seat belt system, and the seat belt webbing is automatically tightened to the tension value of the specified gear. The seat controller quickly inflates the wing support airbag of the zero-gravity seat through the vehicle body air source. Under effective monitoring of the vehicle's operating status, the safety mechanism required for active protection is provided to the occupants through the zero-gravity seat's rapid return to its zero-gravity sitting position, the seat belt's automatic adjustment and tightening, and the support provided by the side support airbags.

[0090] When the vehicle is running at high speed, the seat can be adjusted horizontally forward and backward, backrest forward and backward, seat pan tilt, leg rest flip adjustment, and leg rest telescopic adjustment through the seat controller according to the needs of the passengers. The pressure sensor of the seat controller is set in the connection interface of the left and right wing support system of the seat. When the vehicle has the function of turning left or right, the body of the passenger on the zero-gravity seat squeezes the left or right wing support airbag of the seat due to centrifugal movement, causing the pressure in the airbag to increase, thereby triggering the seat controller to quickly inflate the wing support airbag through the vehicle body air source interface, achieving the body offset support effect for the passenger, and providing the passenger with a physiological and psychological sense of safety. When the sensor on the zero-gravity seat frame detects that the acceleration of the seat and the vehicle increases, the seat controller outputs the vehicle acceleration signal value (acceleration direction and acceleration value) to the active seat belt system, and the active seat belt system automatically adjusts the retracting motor to tighten the seat belt webbing and adjusts the seat belt webbing tension to the specified value.

[0091] The seat controller can analyze the braking intensity and collision risk based on the data from the acceleration collection mechanism, adjust the seat to the safest state in advance, and accurately determine the type and degree of collision based on the collaborative analysis of the data collected by the acceleration collection mechanism and the pressure sensor, and initiate corresponding safety protection measures. It can also sense the direction and degree of the occupant's body deviation through the pressure changes of the side support airbags, and intelligently adjust the inflation volume of the side support airbags and the seat posture in combination with the steering signal of the acceleration collection mechanism to ensure the stability of the occupants.

[0092] Furthermore, when the value of the acceleration sensor on the seat frame changes, it indicates that the vehicle is in an acceleration or deceleration state. When the value of the acceleration sensor is less than 0, it indicates that the vehicle is in a deceleration state. The seat controller analyzes the change value of the acceleration sensor (collecting acceleration values ​​per unit time, and comparing the collected multiple acceleration values, the acceleration difference within n unit time, △a = da / dt). When the acceleration value is close to zero, the forward acceleration and the backward acceleration are constantly changing, and the acceleration value is lower than the set value as, it indicates that the vehicle is in a braking state or a normal deceleration state, there is no collision risk, and it is a conventional braking.

[0093] When the acceleration sensor value on the seat frame changes, it means that the vehicle is accelerating or decelerating. When the acceleration value changes from greater than 0 to less than 0, the acceleration sensor is always less than 0 within n units of time, the acceleration is lower than the set value as, and the acceleration difference △a=da / dt within n units of time (always greater than 0, close to 0), it means that the vehicle is in an emergency braking state, which is an emergency braking.

[0094] When the acceleration sensor value on the seat frame increases, it means that the vehicle is in a deceleration state. If the acceleration sensor value is always less than 0 within n units of time, the acceleration exceeds the set value as, and the acceleration difference value △a=da / dt (always greater than as) within n units of time, it means that the vehicle is in a collision state, which is a pre-collision state.

[0095] A zero-gravity active safety seat provided by an embodiment of the present invention can quickly recover from a zero-gravity position to a normal position in an emergency situation, such as when a pre-collision signal is triggered, and provide maximum protection in conjunction with a seat belt pretensioner; it can provide additional lateral support during turning or side sliding 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 also 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 support airbag and the acceleration value of the moving vehicle.

[0097] Specifically, after identifying the risk of collision, the seat controller will quickly adjust the working state of the retraction 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 forward leaning of the occupant, the tensioning force of the seat belt increases rapidly, triggering the seat belt warning function, quickly tightening the seat belt and adjusting it to the set value after the airbag signal is triggered, thereby reducing the probability of injury to the occupant in the collision.

[0098] The present invention provides a zero-gravity active safety seat, which is applied to a mobile vehicle. The zero-gravity active safety seat includes: a seat body, wing support air bags, a seat controller, an acceleration acquisition mechanism and a pressure sensor; the acceleration acquisition mechanism is arranged on the seat body; the mobile vehicle is provided with an air source; the air source is connected to the wing support air bags, and the air source is used to inflate and deflate the wing support air bags; the wing support air bags are arranged on the seat body; the pressure sensor is used to obtain the air pressure value in the wing support air bags, 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 arranged on the seat frame; the acceleration acquisition mechanism is used to obtain 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 conventional posture; the air source is connected to the wing support air bags, and the air source is used to inflate and deflate the wing support air bags; the wing support air bags are arranged on the seat body; the pressure sensor is used to obtain the air pressure value in the wing support air bags, 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 arranged on the seat frame; the acceleration acquisition mechanism is used to obtain 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 conventional posture; The air source and the seat posture adjustment mechanism are both 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 airbag and the acceleration value of the mobile vehicle; wherein the motion state of the mobile vehicle includes: conventional braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, steering or sideslipping; 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 operating state information of the mobile vehicle is collected through the pressure sensor and the acceleration collection mechanism arranged on the zero-gravity active safety seat frame, the operating state of the mobile vehicle is analyzed, and then the posture of the zero-gravity active safety seat and the state of the side wing support airbag are adjusted, so as to fundamentally reduce and reduce the accidents and degree of casualties of the occupants, actively reduce the probability of accidents of the occupants, and improve the safety and reliability of the zero-gravity seat under high-speed operation of the vehicle.

[0099] Embodiment 2

[0100] Based on the above embodiment, the present invention provides another zero-gravity active safety seat. Figure 2The structural schematic diagram of a zero-gravity active safety seat provided by the embodiment of the present invention shown in the figure includes a seat controller, an active safety belt system, a seat frame, a wing support system, and a vehicle body air source. The seat controller realizes the horizontal forward and backward adjustment of the seat frame, the forward and backward tilt angle adjustment of the backrest, the tilt angle adjustment of the seat pan, the flip adjustment of the leg rest, and the telescopic adjustment of the leg rest. The seat controller has built-in MOS circuits and components, and adjusts the output voltage of the MOS circuit through the PWM signal (frequency and duty cycle) output by the domain drive chip, thereby adjusting the backrest and seat cushion tilt angle of the zero-gravity seat to quickly return to the position and adjust the low-speed adjustment requirements. The zero-gravity seat is provided with a backrest dual motor and a seat cushion tilt dual motor structure. When the vehicle is running at high speed and the seat is in a zero-gravity unfolded state, the zero-gravity seat is in a state of rapid adjustment of the MOS circuit, and the high-speed and high-torque output provided by the backrest and seat cushion tilt dual motors is used to realize the rapid return of the seat back and seat cushion to the normal sitting position, providing the maximum degree of collision protection effect for the occupants on the seat. The left and right sides of the seat are provided with wing support systems, which are connected to the seat controller. When the vehicle turns left or right, the seat controller inputs high-pressure gas through the body air source to inflate and deflate the wing support system, so as to realize the wing support protection function when the vehicle turns. The wing support is provided with a built-in pressure sensor at the connection with the seat controller, which is placed in the seat controller. During the vehicle turning process, the occupant's body is squeezed by centrifugal movement on the wing airbag, resulting in an increase in the pressure in the wing support airbag, thereby outputting a vehicle turning signal for the seat controller to decide whether the zero gravity should be quickly restored to a normal sitting position. The seat frame contains multiple acceleration sensors, which detect the acceleration values ​​of the seat and the vehicle in the direction of the sensor arrangement, and are combined with the steering signal for the seat controller to decide whether the zero gravity should be quickly restored to a normal sitting position. The active seat belt system has a built-in ECU (electronic controller), a retractor motor and a seat belt webbing. The built-in ECU collects the seat belt webbing tightening or releasing signal input by the seat controller, adjusts the retractor forward or reverse signal, and thus adjusts the retractor motor to tighten or loosen the webbing pull. On this basis, the seat controller monitors the running status of the seat and the corresponding vehicle and the risk prediction of accidents in real time through the acceleration vehicle sensor and pressure sensor of the seat safety monitoring system, and uses the active safety belt system of the active safety zero-gravity seat, the MOS drive circuit of the seat controller, the seat dual motor adjustment system, and the side wing support system to provide a zero-gravity seat with rapid return. At the same time, it provides all-round protection of seat belt webbing tightening and side wing support protection, providing the most effective protection for occupants from risk prediction, safety mechanism decision-making, and multi-level safety protection mechanisms, and providing maximum protection for zero-gravity seat occupants under high-speed vehicle operation, reducing the probability of accidents and the degree of casualties. See the following description 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, the backrest and the seat cushion are all fixedly connected to the seat frame; the first acceleration sensor is arranged inside the headrest; the second acceleration sensor is arranged 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 arranged 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, including the inside of the headrest, the left and right sides of the backrest, and the left and right sides of the seat cushion. The seat controller monitors the analog voltage ADC signal output by each sensor to predict the vehicle's operating state. When one of the acceleration sensors on the seat frame fails, the acceleration and deceleration state of the vehicle can still be identified through acceleration sensors at other locations, thereby providing a control basis for whether the zero-gravity seat should return to its original position quickly.

[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 inclination speed regulation module and a backrest speed regulation 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 inclination speed regulation module is used to adjust the inclination angle of the seat cushion of the zero-gravity active safety seat; the backrest speed regulation module is used to adjust the inclination angle of the backrest of the zero-gravity active safety seat.

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

[0105] See also Figure 3 A schematic diagram of the position of a speed regulating motor provided in an embodiment of the present invention is shown, and a dual-motor adjustable backrest is designed on the zero-gravity seat back frame. The motor has a fast or slow speed adjustment function, which can not only meet the conventional seat zero-gravity deployment, return adjustment, and backrest adjustment, but also meet the seat's zero-gravity backrest rapid retraction function within milliseconds. Compared with the conventional single-motor backrest zero-gravity seat adjustment on the market, the dual-adjustable backrest motor not only solves the problem of insufficient lifting force of the backrest under zero gravity, but also can provide greater load capacity through the dual-adjustable motor, while realizing the automatic motor speed adjustment function, meeting the use requirements of people with heavier weight for the zero-gravity seat function, and realizing the rapid automatic return function required for the active safety of the seat zero gravity.

[0106] The zero-gravity seat cushion frame is designed with dual motors to adjust the seat cushion inclination. The motors have fast and slow speed adjustment functions, which can not only meet the conventional seat zero-gravity deployment, return adjustment, and seat cushion inclination adjustment, but also meet the seat's zero-gravity seat cushion rapid return function within milliseconds. Compared with the conventional single-motor seat cushion inclination zero-gravity seat adjustment on the market, the dual-adjustment motor for the seat cushion inclination not only solves the problem of insufficient lifting force under zero-gravity seat inclination, but also provides greater load capacity through the dual adjustment motors, while realizing the automatic motor speed adjustment function, meeting the requirements of people with heavier weight for the use of zero-gravity seat functions, and realizing the rapid automatic return function required for active zero-gravity seat safety.

[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 rest adjustment module, the lifting module and the seat cushion inclination speed regulation module; the domain drive chip is used to control the slide rail module, the leg rest adjustment module, the lifting module and the seat cushion inclination speed regulation 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 regulation module; and the domain drive chip is used to control the connection of the backrest speed regulation module 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 drive chip; the first MOS driver and the second MOS driver are both connected to one end of the backrest speed regulation motor; the third MOS driver and the fourth MOS driver are both connected to the other end of the backrest speed regulation motor; the domain drive chip controls the states of the first MOS driver, the second MOS driver, the third MOS driver and the fourth MOS driver through the output PWM signal to make the backrest speed regulation motor forward or reverse.

[0110] The seat motor fast and slow speed adjustment is realized through the seat controller. The main chip (domain drive 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 realizes the level control of the input and output ends of the speed regulating motor through MOS driver 1, MOS driver 2, MOS driver 3, and MOS driver 4, controls the voltage (level difference) at both ends of the motor, and indirectly adjusts the voltage change applied to both ends of the motor to achieve the motor speed regulation control requirements, and finally realizes the seat fast return function. In this way, the automatic return speed of the zero-gravity seat is significantly improved. Compared with the conventional zero-gravity seats on the market, the cycle of the zero-gravity seat automatic return function of this design can be controlled within milliseconds, and the rate is increased by more than 40 times, so as to realize the rapid return of the vehicle under high-speed pre-collision according to the seat acceleration sensor. The MOS driver realizes arbitrary speed adjustment and high and low speed adjustment of the motor through the frequency and duty cycle of the PWM of the gate. The conventional relay circuit can only realize on and off, and cannot realize the speed regulation function.

[0111] See Figure Figure 4 The embodiment of the present invention provides a speed regulating motor control principle diagram, MOS drive groups: group A MOS drive 1, MOS drive 3; group B MOS drive 2, MOS drive 4. The MOS tubes in the same group cannot be turned on at the same time, and the motor adjustment operation mode is: when MOS drive 1 and MOS drive 4 are turned on, the speed regulating motor rotates forward, and the seat can be adjusted forward or backward; when MOS drive 2 and MOS drive 3 are turned on, the speed regulating motor flips, and the seat can be adjusted backward or forward.

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

[0113] For details, see Figure 5The control principle diagram of a zero-gravity active safety seat provided by an embodiment of the present invention is shown. Each end point on the seat frame includes multiple acceleration sensors. The acceleration sensors form analog voltages through built-in capacitor structures and piezoelectric modules. The analog voltages are formed under the action of inertial force and transmitted to the seat controller through ADC sampling and analysis. The seat controller analyzes whether the vehicle is in a conventional braking, emergency braking, or pre-collision state through the acceleration values ​​of each point at the seat end point. The seat controller is arranged at the bottom of the seat, and analyzes the slight offset of the seat in combination with the acceleration values ​​of each end point of the seat frame, so as to confirm whether the vehicle is in a sharp turn or side sliding state, and timely control the zero-gravity seat to return to its original state. During vehicle turning, the occupant's body shifts to one side of the seat due to inertia, especially in the zero-gravity seat state, when the seat cushion and the backrest are nearly horizontal (bed mode). During vehicle turning, due to the priority of seat edge restraint, the occupant is at risk of lateral sliding. The side wing support structure can provide effective anti-side sliding protection when the occupant is in a zero-gravity state, thereby improving the occupant's seat zero-gravity feeling during vehicle operation. A pressure sensor is provided at the end of the air bag of the side wing support. When the air bag in the side wing support is squeezed by the occupant's side sliding, the air pressure value in the air bag will change significantly. The pressure sensor converts the air pressure value into an analog voltage value through the internal pressure chip, which is then fed back to the seat controller. The seat controller determines whether the occupant has the risk of side sliding and diving (sliding) through the difference in the pressure value change and the rate of change of the side wing support air bag, thereby driving the seat quick return mechanism to quickly restore the seat controller from the zero-gravity state to the normal riding state, so as to alleviate the risk of occupant diving and side sliding, thereby avoiding the probability and risk of occupant injury.

[0114] The active seat safety pretensioning system adds a built-in ECU module and a retractor motor to the conventional seat belt system. The ECU module monitors the tension of the belt in real time. According to the body shape of the occupant and the retractor motor, the ECU automatically adjusts the seat belt to the set pretension range. When the vehicle is in a braking, deceleration state, steering and side-slipping state, due to the relative movement between the occupant's sitting posture and the seat, the ECU analyzes whether the belt is currently too loose or too tight based on the tension value of the seat belt, and then adjusts the tension of the belt through the retractor motor to provide the occupant with appropriate restraint force, fundamentally improving the difference in seat belt restraint effect caused by differences in various vehicle operating conditions in the zero-gravity state.

[0115] When the vehicle is in a pre-collision state, the occupants lean forward due to inertia, and the tension of the seat belt increases rapidly, thereby triggering the seat belt warning function. The seat belt is quickly tightened, and the seat belt webbing is adjusted to the set value (collision is over) after the airbag signal is triggered, which reduces the probability of injury and casualties to the occupants during the collision, increases the restraint safety of the seat belt, and improves the warning effect of the seat belt. The active safety pre-tensioning system of the seat needs to be calibrated by the car manufacturer based on the collision test data on the retracting motor, built-in ECU, and pre-tensioning parameters, so as to meet the seat belt pre-tensioning requirements under various vehicle conditions, ensuring the comfort of the occupants and meeting the necessary safety protection requirements.

[0116] For further information, see Figure 6 The embodiment of the present invention shown in the figure provides a schematic diagram of the setting of a zero-gravity active safety seat sensor. A plurality of acceleration sensors are provided at each end point of the zero-gravity seat frame. The acceleration sensors have a built-in capacitor structure and a piezoelectric module. The seat forms an analog voltage when the vehicle brakes and forms an analog voltage under the action of inertial force. The analog voltage is transmitted to the seat controller through ADC sampling and analysis. The seat controller analyzes whether the vehicle is in normal braking, emergency braking, or pre-collision state through the acceleration values ​​of each point at the seat end point.

[0117] When the vehicle turns or slides, the acceleration sensor on the seat frame collects the acceleration value and the pressure change value in the wing support airbag of the wing airbag connector to analyze the current state of the vehicle as acceleration, deceleration or turning. When the vehicle is in a turning state, the occupants on the zero seat squeeze the wing airbag due to inertia and centrifugal force. The controller detects the increase in pressure of the airbag on the left side of the seat or the right side of the seat, thereby judging whether the vehicle is turning right, turning left or sliding sideways. The acceleration sensor on the frame monitors whether the vehicle acceleration changes through the internal capacitor element and piezoelectric element of the sensor. The acceleration sensor determines whether the vehicle is accelerating forward or backward according to the increase or decrease in capacitance, and indirectly monitors whether the vehicle is accelerating or decelerating. According to the analysis, when the vehicle changes direction, the seat controller inflates the wing support airbag, and the seat wing lifts up to provide support to the side of the occupant. This improves the riding comfort of the occupants.

[0118] The seat controller has a built-in pressure sensor chip to monitor the air pressure in the side wing airbags in real time, and feedback whether the air pressure of the air source input by the vehicle body is within the normal range to avoid damaging the side wing support airbags. At the same time, the air pressure of the vehicle body is generally above 1.5MPa. High air pressure can achieve rapid inflation of the side wing support airbags and provide a responsive effect of the side wing support function. When the zero-gravity seat is in the unfolded state, the seat controller monitors the pressure of the side wing support airbags in real time. When the controller does not inflate and pressurize the side wing support airbags, when the side wing air pressure value increases, the acceleration sensor detects that the backward acceleration increases, and the acceleration value output by the speed sensor is positive or negative within a few seconds, and the rate of change of the acceleration value is always greater than 0, the controller determines that the vehicle is in the pre-collision range. The seat returns to the normal riding state in milliseconds through the zero-gravity rapid return function. The active seat belt pretensioner tightens the seat belt webbing according to the pre-collision signal and maintains it for a few seconds, thereby providing active safety protection for the occupants in zero-gravity state.

[0119] The embodiment of the present invention provides a zero-gravity active safety seat with a wing protection support function. A dual-adjustable high-speed return motor is arranged on the seat shaft, a seat belt pre-tensioning device is added to the seat, and micro acceleration sensors are provided at each end of the seat frame. A pressure sensor is arranged in the seat controller, and a seat motor speed regulation MOS circuit is provided. The sensors on the zero-gravity seat monitor the emergency braking of the whole vehicle and the prediction of accident collision, and control the rapid return of the zero-gravity seat, thereby reducing the degree of damage to the occupant caused by the zero-gravity seat in an emergency situation, compensating for the potential risks of the seat in the high-speed operation of the whole vehicle, and reducing the probability of casualties in accidents.

[0120] The present invention provides large torque and high speed performance for the zero-gravity seat under automatic return through dual adjustment motors, thereby compensating for the long automatic return time and insufficient adjustment torque of conventional zero-gravity seats on the market. On this basis, the acceleration sensor is arranged through the skeleton to actively monitor the vehicle operation status of the zero-gravity seat, and the acceleration value and the change value of the acceleration are used to deeply analyze whether the vehicle has a collision risk. Under active prediction of vehicle collision, the zero-gravity seat is automatically restored to a normal riding state within milliseconds through the speed regulating motor and the MOS driving circuit, and the seat belt is automatically tightened by the retracting motor and maintained for several seconds, thereby actively protecting the occupants. The arrangement of multiple acceleration sensors can not only reduce the risk of occasional failure of the sensor itself, resulting in reduced active safety performance, but also analyze the data differences of each sensor, thereby reducing the risk of misjudgment or untimely response of the seat controller system to the vehicle status.

[0121] The zero-gravity seat is equipped with wing supports, and the built-in pressure sensor of the seat controller can monitor the airbag pressure in real time, which not only provides support for the body deviation caused by inertia and centrifugal force when the vehicle turns, but also improves the comfort experience of the occupants in the zero-gravity state of the seat. At the same time, the change in the pressure value of the sensor can be associated with the direction of the occupant's body deviation, and then predict whether the vehicle is turning or skidding (side collision risk). Combined with the acceleration value and acceleration change value output by the acceleration sensor, the vehicle is analyzed to be at risk of side collision, triggering the zero-gravity return of the seat and the automatic tightening of the seat belt. Fundamentally reduce and reduce the accidents and degree of casualties of passengers, actively reduce the probability of accidents of passengers, and thus improve the safety and reliability of zero-gravity seats under high-speed operation of vehicles.

[0122] Embodiment 3

[0123] Based on the above embodiments, the present invention provides a method for controlling a zero-gravity active safety seat, which is applied to a seat controller of a zero-gravity active safety seat. Figure 7 The flowchart of a method for controlling a zero-gravity active safety seat provided by an embodiment of the present invention is shown, and the method comprises:

[0124] Step S302, controlling the acceleration acquisition mechanism to acquire the acceleration value of the mobile vehicle, and controlling the pressure sensor to acquire the air pressure value in the wing support airbag.

[0125] Step S304, determining the motion state of the mobile vehicle based on the air pressure value in the side support airbag and the acceleration value of the mobile vehicle; wherein the motion state of the mobile vehicle includes: conventional braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, turning or sideslipping.

[0126] Step S306, controlling 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 can clearly understand that, for the convenience and brevity of description, the specific working process of the control method of the zero-gravity active safety seat described above can refer to the corresponding process in the aforementioned embodiment 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, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements 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: Applied to mobile vehicles, the zero-gravity active safety seat comprises: a seat body, side wing support air bags, a seat controller, an acceleration acquisition mechanism and a pressure sensor; The acceleration acquisition mechanism is arranged on the seat body; The mobile carrier is provided 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 airbag is arranged on the seat body; The pressure sensor is used to obtain the air pressure value in the side wing support air bag and send the air pressure value to the seat controller; The seat body comprises: a seat frame and a seat posture adjustment mechanism; The seat posture adjustment mechanism is arranged on the seat frame; The acceleration acquisition mechanism is used to obtain 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; The air source and the seat posture adjustment mechanism are both connected to the seat controller; The seat controller determines the motion state of the mobile vehicle based on the air pressure value in the wing support airbag and the acceleration value of the mobile vehicle; wherein the motion state of the mobile vehicle includes: conventional 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.

2. The zero-gravity active safety seat according to claim 1, characterized in that: 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 arranged inside the headrest; The second acceleration sensor is arranged 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 arranged 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.

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

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

5. The zero-gravity active safety seat according to claim 4, characterized in that: 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 lifting module and the seat cushion inclination speed regulation 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 inclination speed control module through the relay circuit.

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

7. The zero-gravity active safety seat according to claim 6, 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; 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 drive chip controls the states 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 regulating motor run forward or reverse.

8. The zero-gravity active safety seat according to claim 1, characterized in that: The zero-gravity active safety seat also includes: an active safety belt system; The active seat belt system includes: a 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 support airbag and the acceleration value of the moving vehicle.

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

10. A method for controlling a zero-gravity active safety seat, characterized in that: A seat controller applied to the zero-gravity active safety seat comprises: Controlling the acceleration collection mechanism to collect the acceleration value of the mobile vehicle, and controlling the pressure sensor to collect the air pressure value in the wing support air bag; Determining the motion state of the mobile vehicle based on the air pressure value in the side support airbag and the acceleration value of the mobile vehicle; wherein the motion state of the mobile vehicle includes: conventional braking, emergency braking, pre-collision state, frontal collision, side collision, rear collision, steering 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.

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