Detection control method and system and child safety seat

Abstract

The invention provides a detection control method and system and a child safety seat. The detection control method comprises the steps that dynamic parameters and surrounding interaction parameters are input into a space-time model to output multi-level collision risk levels, and according to the multi-level collision risk levels, a safety airbag and an anti-toppling rotary cover of the child safety seat are pre-unfolded or completely unfolded; when the anti-toppling rotary cover executes the pre-unfolding action or the complete unfolding action, obtaining posture parameters of a user, and judging whether the posture of the user conflicts with the unfolding of the anti-toppling rotary cover or not; if yes, the posture of the user is corrected in an auxiliary mode through acousto-optic reminding, contraction of the safety belt and adjustment of the inflation saturation degree of the safety air bag. The technical problems that in the prior art, a child safety seat only adopts a passive fixing mode, a dynamic risk perception and active protection mechanism is lacked, and adaptive safety intervention cannot be implemented under the emergency situation are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of child safety seats, in particular to a detection control method and system and a child safety seat. BACKGROUND

[0002] In the current travel scenario, diversified mobile carriers significantly improve the efficiency of spatial displacement, and users can effectively compress the time cost by adapting different transportation equipment. However, the potential sudden risks in the process of mechanical movement objectively exist, and such carriers are generally equipped with multiple layers of safety protection systems to deal with unexpected working conditions. As a key component of the occupant protection system, the child safety seat adopts a heterogeneous structure designed based on the principle of ergonomics, and cooperates with a multi-dimensional dynamic restraint system to realize the posture stability control of young passengers in the impact accident, so as to avoid the young passengers from being injured due to the inertia generated by the accident.

[0003] However, there are at least one of the following problems in the related art: the child safety seat in the prior art only adopts a passive fixing mode, lacks a dynamic risk perception and active protection mechanism, and cannot implement adaptive safety intervention in sudden emergency situations. SUMMARY

[0004] The technical problem solved by the present application is that the child safety seat in the prior art only adopts a passive fixing mode, lacks a dynamic risk perception and active protection mechanism, and cannot implement adaptive safety intervention in sudden emergency situations.

[0005] To solve the above problems, the present application provides a detection control method applied to a child safety seat, comprising: collecting dynamic parameters and surrounding interaction parameters of the carrier through a multi-sensor array; establishing a space-time model according to historical data of the carrier running; inputting the dynamic parameters and the surrounding interaction parameters into the space-time model to output a multi-level collision risk level, and executing a pre-expansion action or a complete expansion action on the safety airbag and the anti-toppling rotary cover of the child safety seat according to the multi-level collision risk level; when the anti-toppling rotary cover executes the pre-expansion action or the complete expansion action, acquiring a user posture parameter, and judging whether the user posture conflicts with the expansion of the anti-toppling rotary cover; if the judgment is yes, the user posture is assisted to correct through sound and light reminding, retracting the safety belt and adjusting the inflation saturation of the safety airbag.

[0006] Compared with the prior art, the technical effects achieved by adopting the technical scheme are: the dynamic parameters and surrounding interaction parameters of the carrier are collected through the integrated multi-sensor array, the traditional single acceleration detection mode is broken through, and the space-time model constructed based on the historical driving data of the carrier can dynamically analyze the road topological structure and driving behavior characteristics, so that the prediction window period of the system for potential collision is prolonged, the child safety seat is upgraded from a passive protection device to an intelligent active safety system through the construction of a "data perception, intelligent prediction, and hierarchical response" protection system, the user posture parameter analysis is embedded in the starting stage of the anti-toppling rotary cover, the potential conflict problem between the mechanical unfolding action and the occupant posture is solved through the inflation saturation adjustment, the sound and light reminding, and the safety belt contraction cooperative control, the control chain of conflict detection and flexible correction is formed, and the safety of the occupant in the function release process of the protection device is ensured.

[0007] In an example of the present application, the detection control method further comprises triggering an emergency oxygen supply and heat protection cooperative strategy when an abnormal oxygen concentration or a temperature gradient mutation in the vehicle is detected: the flame detection device is in communication connection with the fire extinguishing device on the seat back, and the fire extinguishing agent is sprayed in a directional and quantitative manner to the position where the flame occurs; the oxygen supply mechanism connected with the head and neck restraint part releases the oxygen flow, and the oxygen injection direction is adaptively adjusted based on the child head and neck posture; wherein, when the flame detection device detects the flame or detects that the surrounding is in a easily ignitable environment, the oxygen supply mechanism controls the oxygen delivery amount or stops the oxygen delivery; when the fire or collision occurs, a multiple positioning alarm operation is performed: an emergency rescue signal containing the seat position information is sent through the carrier communication module; the near-field positioning beacon is activated to generate a periodic sound wave and radio frequency mixed navigation signal.

[0008] Compared with the prior art, the technical effects achieved by adopting the technical scheme are: the intelligent linkage mechanism of the integrated fire extinguishing device and the oxygen supply system realizes rapid physical isolation of the fire source through the flame positioning and directional fire extinguishing agent spraying technology; at the same time, the oxygen injection direction is dynamically adjusted combined with the head and neck posture tracking, to ensure the stability of the breathing passage in extreme environment, form a "suffocation risk blocking-life maintenance" double-effect protection closed loop, accurately distinguish multiple types of danger such as vehicle spontaneous combustion, external fire intrusion or hypoxia in airtight space through the double-threshold cross verification mechanism of temperature gradient mutation and abnormal oxygen concentration, dynamically optimize the oxygen supply strategy and the intensity ratio of fire extinguishing, avoid the protection overload or failure caused by single parameter misjudgment, and innovate the mixed signal alarm system combined with the remote rescue of the wide area communication module and the near-field sound wave-radio frequency mixed positioning beacon, which not only meets the centimeter-level accurate positioning demand of rapid rescue at the accident site, but also guarantees the signal penetration and anti-interference ability in complex environment (such as tunnel, underground garage), to form a global coverage guarantee.

[0009] The application provides a detection control system, which can realize the detection control method of any one of the above, and comprises: a multi-source perception module, which is used to acquire surrounding interaction parameters and dynamic parameters; the surrounding interaction parameters comprise relative distance, approaching vector and trajectory prediction; the dynamic parameters comprise motion direction, speed change and attitude offset; a collision analysis module, which is used to predict the severity of an accident by analyzing the surrounding interaction parameters and the dynamic parameters; a fire detection unit, which is used to judge whether a vehicle has a flame or an easily ignitable environment by acquiring image data, smoke concentration data and temperature data in the vehicle; a vital sign monitoring unit, which is used to detect the vital signs and sitting posture of a user; and a main control processor, which is used to execute corresponding protection measures according to the multi-level collision risk level obtained by prediction.

[0010] Compared with the prior art, the technical effects achieved by the technical scheme are as follows: the multi-source perception module and the collision analysis module cross-verify multi-source data, improve collision warning accuracy and reduce misjudgment rate; the vital sign monitoring unit monitors the sitting posture and heart rate in real time, dynamically adjusts the protection strategy in combination with the collision risk level, and pre-inflates each safety airbag and pre-tightens the safety belt before an accident occurs, so as to timely cope with different conditions; and the fire detection unit and the oxygen supply mechanism are linked, and the oxygen supply is automatically started when the smoke concentration exceeds the standard, so as to prevent children from suffocating.

[0011] In an example of the application, the multi-source perception module comprises a radar, a camera, a laser radar, an ultrasonic sensor, an acceleration sensor and a pressure sensing unit; the radar, the camera, the laser radar and the ultrasonic sensor are arranged at the front, side and rear of the child safety seat; and the acceleration sensor and the pressure sensing unit are arranged at the periphery of the vehicle.

[0012] Compared with the prior art, the technical effects achieved by the technical scheme are as follows: the radar and the laser radar are combined to realize omnidirectional obstacle detection, cover the blind area of the vehicle, and especially warn against a vehicle approaching from the side and rear; the acceleration sensor and the pressure sensing unit cooperatively analyze the collision direction and intensity, distinguish the types of front collision, rear-end collision or side collision, trigger a differentiated protection mechanism, and preferentially detonate the airbag on the side of the child safety seat that collides with the child.

[0013] In an example of the application, the fire detection unit comprises a smoke detection device and a temperature sensor; and the vital sign monitoring unit comprises a pressure sensing unit and a heart rate detection unit, which are arranged at the waist and abdomen, shoulders, legs and chest region of the child safety seat.

[0014] Compared with existing technologies, the technical effects achieved by this solution are as follows: the smoke detection device and temperature sensor are used to distinguish between abnormal heating of the child safety seat itself and fire in the vehicle environment, avoiding accidental triggering of the fire extinguishing device; the pressure-sensitive unit matrix detects the child's sitting posture deviation and corrects poor posture through voice prompts, reducing the risk of non-collision injuries; the detection data of the heart rate detection unit is linked with the collision warning signal to automatically record the child's physiological state in emergency situations, providing a basis for medical rescue.

[0015] This invention provides a child safety seat capable of using any of the aforementioned detection and control systems. The child safety seat includes a main body, a head and neck restraint unit, an anti-tipping rotating cover, and a face cushion airbag assembly. The main body includes a seat back and a seat cushion. The head and neck restraint unit is located at the upper end of the seat back and includes a head fixation chamber. A semi-circular neck airbag is embedded in the inner wall of the head fixation chamber. The anti-tipping rotating cover is located at the upper end of the head fixation chamber. When the anti-tipping rotating cover is unfolded, it forms a semi-enclosed structure with the head fixation chamber. The face cushion airbag assembly is located on the inner side of the anti-tipping rotating cover.

[0016] Compared with existing technologies, the technical effects achieved by this solution are as follows: the head fixation chamber and the semi-circular neck air cushion form a protective enclosure for the head and neck, reducing the risk of neck swinging during a collision; the anti-tipping rotating cover and the head fixation chamber form a semi-enclosed structure; and the design of the facial cushioning airbag group prevents the child's head from tilting forward significantly due to inertia, thus better protecting the child's underdeveloped head.

[0017] In one embodiment of the present invention, the anti-tipping rotating cover has a perforated window, the area enclosed by the perforated window corresponding to the user's face position; the face cushioning airbag assembly includes an annular cushioning airbag; the annular cushioning airbag is located on the inner side of the anti-tipping rotating cover and is arranged along the periphery of the perforated window; wherein, when the annular cushioning airbag is in the deployed state, the annular cushioning airbag forms a wraparound protection for the user's cheeks and chin.

[0018] Compared with existing technologies, the technical effects achieved by this solution are as follows: A perforated window is added to the anti-tipping rotating cover to reduce its weight, while avoiding obstructing children's view or hindering ventilation; the annular buffer airbag extends continuously along the edge of the perforated window, and after expansion, it forms a wraparound pressure distribution on the cheeks and jaw, preventing excessive local pressure that could lead to soft tissue damage; the annular buffer airbag works in conjunction with the neck airbag in the head fixation chamber to achieve a continuous energy absorption path from the neck to the face.

[0019] In one embodiment of the present invention, a flexible partition is provided around the perforated window, one end of which is hinged to the edge of the perforated window; the other end of which is engaged with the edge away from the hinged side of the perforated window; when the flexible partition is unfolded, it covers the area enclosed by the perforated window to form a closed observation window.

[0020] Compared with existing technologies, the technical effects achieved by this solution are as follows: the foldable flexible partition takes into account both collision protection and daily observation needs, and when unfolded, the light-transmitting panel allows parents to visually monitor the child's status; the snap-fit ​​design ensures that the panel is firmly fixed after being folded, preventing accidental closure due to vibration or impact; the hinge structure allows the panel to quickly switch between ventilation mode and closed mode to adapt to different environmental needs.

[0021] In one embodiment of the present invention, the anti-tipping rotating cover includes a first curved guard plate, a second curved guard plate, and a locking mechanism; the first curved guard plate is fixedly disposed in the head fixing chamber; the second curved guard plate is movably disposed in the head fixing chamber, and the second curved guard plate rotates circumferentially along the arc trajectory of the upper surface of the first curved guard plate; the head fixing chamber includes a limiting groove; wherein, when the anti-tipping rotating cover is not unfolded, the second curved guard plate and the first curved guard plate are locked by the locking mechanism; when the anti-tipping rotating cover is in the fully unfolded state, the lower end of the second curved guard plate is inserted into the limiting groove to form a semi-enclosed structure.

[0022] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the combination of the locking mechanism and the limiting groove ensures the stability of the flip cover structure in both the unfolded and unfolded states, preventing protection failure or abnormal opening of the flip cover in the event of a collision; the modular design facilitates the repair and replacement of the flip cover, reducing maintenance costs.

[0023] In one embodiment of the present invention, the child safety seat further includes an oxygen supply mechanism, which includes an oxygen tank, an oxygen delivery channel, an adjustable-angle nozzle, and a solenoid valve. The oxygen tank is embedded in the back of the main body of the seat and is connected to the adjustable-angle nozzles on both sides of the head and neck restraint via the oxygen delivery channel. The solenoid valve is located in the middle section of the oxygen delivery channel and is electrically connected to the fire detection unit of the child safety seat. An emergency alarm button and a wireless communication module are embedded in the front end of the seat cushion, and the wireless communication module is connected to a remote rescue platform in real time.

[0024] Compared with existing technologies, the technical effects achieved by this solution are as follows: the adjustable-angle nozzle enables directional and quantitative oxygen delivery, avoiding direct airflow onto the child's face and causing discomfort; the positioning alarm button is linked with the wireless communication module to automatically send accurate location information in emergencies, shortening the rescue response time; the oxygen cylinder is hidden and integrated inside the child safety seat, avoiding taking up extra space while meeting the child's emergency breathing needs.

[0025] By adopting the technical solution of the present invention, the following technical effects can be achieved: (1) By acquiring user dynamic parameters and surrounding interaction parameters, and inputting the acquired data into the spatiotemporal model, the system can predict the upcoming accident, output a multi-level collision risk level based on the prediction results, and execute different response actions based on the multi-level collision risk level. This can respond to different accident environments more promptly and intelligently, thus providing better protection for children. (2) By monitoring the sudden changes in oxygen concentration and temperature gradient in real time, an early warning is triggered, and the fire extinguishing device and the oxygen supply system are linked to form a closed-loop control. The oxygen supply mechanism adjusts the direction of oxygen flow in real time based on the head and neck posture to ensure that the oxygen flow can still accurately cover the breathing area under unexpected posture. In the detection of flames or flammable environments, the oxygen supply module can actively limit the flow or cut off the oxygen supply to avoid the risk of combustion and the imbalance of oxygen concentration; (3) By unfolding the anti-tipping turn-around cover and detonating the facial buffer airbag group inside the anti-tipping turn-around cover, the inflated facial buffer airbag group wraps the child's entire cheek, jaw and back of the head, preventing the child's head from tilting forward when the vehicle collides, thus providing better protection for the underdeveloped head and neck. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 A flowchart of a detection and control method provided by the present invention; Figure 2 This is a schematic diagram of the various modules within a detection and control system provided by the present invention; Figure 3 This invention provides a structural schematic diagram of a child safety seat; Figure 4 for Figure 3 The diagram shows a child safety seat from another perspective. Figure 5 for Figure 3 A schematic diagram of the structure from another perspective when the flexible partition is not deployed; Figure 6 for Figure 3 The diagram shows a child safety seat from another perspective. Figure 7 for Figure 5 A schematic diagram of the mid-face airbag assembly from another perspective when it is not deployed; Figure 8 for Figure 7 The diagram shown is a structural schematic from another perspective when the anti-tipping rotating cover is not unfolded. Figure 9 for Figure 3 The diagram shows a child safety seat from another perspective. Figure 10 for Figure 7 The diagram shows the structure of the anti-tipping rotating cover from another perspective. Figure 11 for Figure 10 A schematic diagram of the structure at point A in the middle.

[0027] Explanation of reference numerals in the attached figures: 10. Main cockpit body; 20. Waist and abdomen support; 30. Anti-tipping rotating cover; 301. First curved protective plate; 302. Second curved protective plate; 303. Hollowed-out window; 304. Electromagnetic locking mechanism; 305. Stepper motor; 3031. Flexible partition; 40. Head and neck restraint; 401. Head fixing chamber; 402. Annular buffer airbag; 403. Semi-annular neck airbag; 50. Side protection wings; 501. Anti-side impact airbag; 502. Airbag waist support; 60. Base; 70. Seat belt; 80. Anchoring interface; 90. Oxygen supply mechanism; 1001. Multi-source sensing module; 1002. Impact analysis module; 1003. Main control processor; 1004. Fire detection unit; 1005. Vital signs monitoring unit. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] This invention provides a detection and control method applied to a child safety seat. The method includes: collecting dynamic parameters of the vehicle and surrounding interaction parameters through a multi-sensor array; establishing a spatiotemporal model based on historical vehicle driving data; inputting the dynamic parameters and surrounding interaction parameters into the spatiotemporal model to output a multi-level collision risk level; performing pre-deployment or full deployment actions on the child safety seat's airbag and anti-tipping turn-off cover 30 according to the multi-level collision risk level; when the anti-tipping turn-off cover 30 performs the pre-deployment or full deployment action, acquiring the user's posture parameters and determining whether the user's posture conflicts with the deployment of the anti-tipping turn-off cover 30; if the determination is yes, then assisting in correcting the user's posture by using audible and visual reminders, retracting the seat belt 70, and adjusting the airbag inflation saturation.

[0030] Specifically, child safety seats incorporate multi-sensor arrays, including accelerometers, environmental radar, and cameras, which monitor the vehicle's movement and surrounding environment in real time, creating an active safety warning system. Its core function is to dynamically analyze continuous time-series data to assess potential collision risks and respond accordingly.

[0031] Furthermore, accelerometers are used to capture details of vehicle motion, such as acceleration, deceleration, and turning, including sudden braking and emergency lane changes.

[0032] Furthermore, environmental perception radar and cameras are used to monitor changes in the distance to obstacles around the vehicle, the relative movement trends of other vehicles, and whether lane lines are maintained properly.

[0033] Furthermore, the in-vehicle camera is used to observe the posture of the child in the seat, such as whether the body shifts due to vehicle movement.

[0034] Furthermore, all sensor information is time-stamped and aggregated into a unified database in chronological order to form a coherent scene record.

[0035] Furthermore, the dynamic analysis of continuous-time data includes: the system divides real-time data into fixed-length time segments, each segment lasting 3 seconds, and continuously updates these segments based on the vehicle's travel time. Data within each segment is analyzed independently, while comparing the trends of adjacent segments. For example, in behavior pattern recognition: if a segment shows a sudden and significant deceleration of the vehicle, and the deceleration trend continues to intensify in subsequent segments, it may indicate a rear-end collision risk. If the vehicle gradually deviates from its lane in multiple consecutive segments without correction, it may be judged as driver distraction or loss of control. Moreover, by comparing data from different sensors before and after time segments, transient interference, such as bumpy road surfaces, is eliminated to extract the true risk signals.

[0036] Furthermore, the system integrates the following three key indicators and uses logical rules to determine the risk level: **Motion Intensity:** Does the vehicle frequently accelerate or decelerate rapidly, or exhibit abnormal shaking or tilting, potentially indicating a rollover? **Path Stability:** Does the vehicle continuously deviate from its expected path, such as through irregular lane changes or serpentine driving? **Environmental Urgency:** Are there rapidly approaching obstacles or unavoidable potential collision targets, such as a vehicle suddenly stopping ahead? The system outputs a multi-level collision risk rating based on these three key indicators, categorized into high-risk, medium-risk, and low-risk warning signals.

[0037] Furthermore, when multiple indicators are abnormal simultaneously (such as sudden braking of the vehicle + rapid approach of an obstacle + loss of control of the path), it is judged as a high risk, and the system determines that a collision is unavoidable or has already occurred. At this time, the main control chip triggers the airbag initiation device, executing a combined action sequence of pre-inflation and full deployment. The airbag completes full inflation within 50ms to form a surrounding buffer layer; at the same time, the anti-tipping turn-around cover 30 unlocks the rotation mechanism 5ms in advance, and fully deploys and locks after detecting that there is no obstruction on the deployment path; the locking mechanism of the seat belt 70 switches to a rigid locking mode to limit the occupant's displacement in any direction; the child's torso tilt angle and limb extension posture are captured in real time by infrared depth sensors and array sensors. If the head is detected to be deviating from the airbag coverage area and the deployment path of the anti-tipping turn-around cover 30 is obstructed, a dynamic mitigation strategy is immediately activated, including releasing the airbag pressure in stages, activating the dual-side limit motors of the seat to restrain shoulder displacement, and activating the buzzer array to emit directional sound until the user's posture and the deployment of the safety device do not conflict.

[0038] Furthermore, when any one or more indicators are significantly abnormal but not yet fatal (such as lane departure without nearby obstacles), it is judged as medium risk. The driver or accompanying person is alerted by seat vibration or flashing lights, and the anti-rollover turn-off cover 30 enters the pre-deployment state. The pre-deployment state of the anti-rollover turn-off cover 30 is achieved by reducing the current supplied to the electromagnetic locking mechanism 304, thereby reducing the magnetic force of the electromagnetic locking mechanism 304. When the anti-rollover turn-off cover 30 enters the pre-deployment state, it can deploy within 0.2 seconds, and at the same time, the pre-inflation module of the airbag is activated to inflate it to 30%.

[0039] Furthermore, when the predicted probability of a collision is low or there is a brief or slight abnormality (such as acceleration fluctuations caused by road bumps), it is judged as low risk, the data is recorded for subsequent optimization and analysis, and the LED warning lights on both sides of the seat are triggered to flash. At the same time, the seat belt 70 motor is driven to tighten to the first restraint force of about 20N in a gradient boost mode to prevent the child's body from shaking.

[0040] Furthermore, cross-referencing data from multiple sensors reduces false alarms. For example, if radar detects an obstacle but the camera does not identify the corresponding object, it is considered a false signal (such as a bird or debris on the ground). By combining data from typical driving scenarios (such as lane changes and parking), the system can distinguish between normal operations and abnormally dangerous actions (such as a system misjudgment due to failure to slow down in time during a turn).

[0041] In one embodiment of the present invention, the detection and control method further includes triggering an emergency oxygen supply and thermal protection coordinated strategy when an abnormal oxygen concentration or a sudden change in temperature gradient is detected in the vehicle: fire extinguishing device on the back of the seat is connected to a flame detection device for directional and quantitative spraying of fire extinguishing agent towards the location of the flame; oxygen flow is released through an oxygen supply mechanism 90 connected to the head and neck restraint 40, and the oxygen spray direction is adaptively adjusted based on the child's head and neck posture; wherein, when the flame detection device detects a flame or detects that the surrounding environment is flammable, the oxygen supply mechanism 90 controls the oxygen delivery volume or stops the oxygen delivery; when a fire or collision occurs, multiple positioning alarm operations are performed: an emergency distress signal containing seat position information is sent through the vehicle communication module; a near-field positioning beacon is activated to generate a periodic acoustic and radio frequency hybrid navigation signal.

[0042] Specifically, an infrared thermal imager and an electrochemical oxygen sensor are integrated inside the seat headrest to continuously monitor changes in cabin temperature gradient and oxygen concentration. When a local temperature rise rate exceeds a set threshold and the oxygen concentration falls below a critical value, a fire risk is identified, and collaborative protection is activated.

[0043] The targeted fire suppression includes: acquiring the coordinates of the fire source through a camera unit, receiving the fire source coordinates sent by the flame detection device through a pre-installed annular nozzle array on the back of the seat, and driving a piezoelectric ceramic pump to precisely spray aerosol fire extinguishing agent into the target fan-shaped area.

[0044] Dynamic oxygen supply includes: a micro servo motor embedded in the head and neck restraint unit 40 adjusts the universal joint mechanism of the oxygen supply nozzle based on the head deflection angle fed back by the inertial measurement unit, so that the oxygen flow is always directed at the child's mouth and nose area. When the flame detection device detects that the concentration of open flame or volatile combustibles exceeds the standard, the oxygen supply mechanism 90 automatically switches to a pulsed low-flow mode to prevent combustion.

[0045] The multi-location alarm includes: in the event of a serious vehicle collision or fire, it can be used for remote distress calls. The vehicle communication module sends emergency messages through both cellular network and satellite channels. The messages contain the unique seat identification number, real-time latitude and longitude, and hazard type code.

[0046] Near-field positioning includes activating a hybrid beacon transmitter at the bottom of the seat, which alternately emits 125kHz low-frequency sound waves and UWB (Ultra Wide Band) radio frequency signals. The sound waves are used to guide rescuers to penetrate obstacles and locate the target, while the radio frequency signals provide three-dimensional coordinates with centimeter-level accuracy.

[0047] In other words, a near-field positioning beacon is a short-range, precise positioning device that provides location guidance for rescue equipment or personnel by emitting specific signals (such as sound waves, radio frequency, or light waves). Its core function is to enable centimeter-level precise positioning in complex environments (such as accident scenes involving vehicle collisions or fires) even when the target rescue object cannot be seen, thereby assisting in rapid search and rescue.

[0048] Furthermore, the sensor network, control actuators, and communication modules are each connected to an independent CAN bus (Controller Area Network). When the main control unit fails, the backup MCU (Microcontroller Unit) automatically executes the corresponding level of protection action based on the last received valid risk level.

[0049] Furthermore, the system is linked to the oxygen supply and fire suppression system. When the pressure in the oxygen supply pipeline rises abnormally or the extinguishing agent is insufficient, the system automatically shuts down the corresponding functional modules and triggers a buzzer alarm to prevent malfunctions that could cause secondary injuries.

[0050] Optionally, the seat belt 70 is a five-point seat belt, which can better secure the child's entire body to the main body of the cabin 10 through multiple fixed points. When a fire is detected, the child safety seat automatically releases the locking device of the seat belt 70 so that the child can get out of the seat more quickly when escaping on his own.

[0051] In summary, such as Figure 1 The detection and control method shown is for predicting whether a vehicle collision will occur and for responding accordingly: Step S101: Control the multi-source perception module to acquire the dynamic parameters of the vehicle and the surrounding interaction parameters; Step S102: The impact analysis module classifies the risk level of the predicted accident based on dynamic parameters and surrounding interaction parameters. Step S103: If the accident is predicted to be low risk, the LED warning lights on both sides of the seat will be triggered to flash, and the seat belt motor will be driven to tighten to the first restraint force of about 20N in a gradient pressure mode to prevent the child's body from shaking. Step S104: If the predicted accident is of medium risk, reduce the current supplied to the electromagnetic locking mechanism to put it into a pre-unlocked state, so that the anti-tipping rotating cover can be deployed within 0.2 seconds. At the same time, activate the pre-inflation module of the airbag to make it reach 30% inflation. Step S105: If the accident is predicted to be high-risk, the anti-tipping turn-around cover is fully deployed, the airbag is fully inflated within 50ms to form a surrounding buffer layer, and the seat belt locking mechanism is switched to rigid locking mode to limit the occupant's displacement in any direction.

[0052] The present invention provides a detection and control system, comprising: a multi-source sensing module 1001, an impact analysis module 1002, a main control processor 1003, a fire detection unit 1004, and a vital signs monitoring unit 1005. The multi-source sensing module 1001 is used to acquire surrounding interactive parameters and dynamic parameters; the surrounding interactive parameters include relative distance, approach vector, and trajectory prediction; the dynamic parameters include motion direction, speed change, and attitude deviation; the impact analysis module 1002 analyzes the surrounding interactive parameters and dynamic parameters to predict the severity of an accident; the fire detection unit 1004 acquires image data, smoke concentration data, and temperature data inside the vehicle to determine whether there is a flame or an flammable environment in the vehicle; the vital signs monitoring unit 1005 is used to detect the user's vital signs and sitting posture; the main control processor 1003 executes corresponding protective measures according to the predicted multi-level collision risk levels.

[0053] like Figure 2 As shown, in one embodiment, the multi-source sensing module 1001 includes radar, camera, lidar, ultrasonic sensor, accelerometer, and pressure sensor; the radar, camera, lidar, and ultrasonic sensor are arranged at the front, side, and rear of the child safety seat; the accelerometer and pressure sensor are arranged around the periphery of the vehicle.

[0054] Specifically, the multi-source sensing module 1001 is arranged around the head and neck restraint part 40 and the side protective wings 50 on both sides of the child safety seat; the multi-source sensing module 1001 outputs vector data of the position, speed and movement trajectory of vehicles within a hundred meters in real time; the combination of radar and lidar realizes comprehensive obstacle detection, covering the vehicle's blind spot, especially for warning of vehicles rapidly approaching from the side and rear; the acceleration sensor and pressure sensing unit work together to analyze the collision direction and intensity, distinguish between frontal collision, rear-end collision or side collision, trigger differentiated protection mechanisms, and prioritize the deployment of airbags on the side of the child and child safety seat that collided.

[0055] Furthermore, the impact analysis module 1002 includes an acceleration sensor and a pressure sensing unit, which are installed at the anchoring interface 80 of the base 60 and the seat back support beam; the impact analysis module 1002 determines the collision type as a frontal collision or a side collision by comparing the detected data with historical collision data.

[0056] Furthermore, the fire detection unit 1004 includes a smoke detection device and a temperature sensor.

[0057] The fire detection unit 1004 is located in the waist, abdomen, shoulders, legs and chest area of ​​the child safety seat and is integrated into the bottom of the child safety seat and the head and neck restraint part 40. The fire detection unit 1004 triggers a fire alarm when any of the following conditions are met: the smoke concentration exceeds the set threshold, the temperature rises abnormally and exceeds the preset normal temperature range, or an open flame exceeding the preset area is detected.

[0058] Furthermore, the vital signs monitoring unit 1005 includes a pressure sensing unit and a heart rate detection unit, which are arranged in the waist, abdomen, shoulders, legs and chest areas of the child safety seat to monitor the sitting posture offset angle, heart rate variability and body movement frequency in real time.

[0059] In one embodiment, the present invention provides a child safety seat comprising: a seat body 10, the seat body 10 including a seat back and a seat cushion connected end to end; a lumbar support 20, the lumbar support 20 being disposed across the seat body 10, the lumbar support 20 having an airbag lumbar support 502 and an array of sensors embedded inside, the airbag lumbar support 502 being connected to an external air pump via a controllable air valve; and a head and neck restraint 40, the head and neck restraint 40 being disposed at the upper end of the seat back, the head and neck restraint 40 including a U-shaped head fixation chamber. 401, A pair of semi-circular neck airbags 403 are embedded in the inner wall of the head fixation chamber 401; Anti-tipping rotating cover 30, the anti-tipping rotating cover 30 is located at the upper end of the head fixation chamber 401, and when it is unfolded, it forms a semi-enclosed structure with the head fixation chamber 401. The inner side of the anti-tipping rotating cover 30 is covered with a silicone buffer layer, and a face buffer airbag assembly is also embedded in the inner side of the anti-tipping rotating cover 30; Side protection wings 50, the side protection wings 50 are located on the left and right sides of the cockpit body 10, and anti-side impact airbags 501 are embedded inside them.

[0060] See Figures 3 to 9 As shown, this is a child safety seat provided in an embodiment of the present invention. Specifically, the seat back and the seat cushion are fixed by integral molding or bolts, forming a tilt angle of 120°-135° between them, making it more comfortable for children to sit on. A rotating shaft is provided at the connection between the seat back and the seat cushion, supporting manual adjustment of the tilt angle, with five adjustable angles to adapt to the sitting posture needs of children of different ages.

[0061] like Figure 9 As shown, the child safety seat further includes a base 60, the rear end of which extends an adjustable anchoring interface 80. This anchoring interface 80 is used to form a fixed connection with the child safety seat anchor point in the vehicle, thereby securing the base 60 to the vehicle seat. The upper end of the base 60 has a mounting groove for mounting the cabin body 10. The bottom of the cabin body 10 is connected to the mounting groove at the upper end of the base 60 to secure the cabin body 10 to the seat inside the vehicle.

[0062] Optionally, the lumbar support 20 extends horizontally through the middle of the seat back and the lower end of the seat back. The airbag lumbar support 502 is a double-layered airbag, divided into left and right independent air chambers. It is connected to an external air pump through a solenoid valve and controller, and supports pressure feedback adjustment by a pressure-sensitive unit to achieve dynamic fit to the curve of the child's waist and back.

[0063] In one embodiment, the airbag lumbar support 502 consists of multiple micro-airbags arranged in an array, and each micro-airbag supports pressure-sensitive unit feedback adjustment of air pressure to achieve dynamic fit to the curve of the child's waist and back.

[0064] Furthermore, pressure-sensitive units are arranged in a 5×5 matrix on the surface of the lumbar support 20, covering the lumbar region and part of the back region. By synchronously monitoring pressure distribution and using a control algorithm, abnormal child posture is determined, including significant forward leaning or side slipping. When the child is in a normal sitting posture, their back is in close contact with the seat back, and the back area is covered by the pressure-sensitive units. The system dynamically adjusts the inflation level of the airbag lumbar support 502 in each area based on the child's back shape. To prevent misjudgment of abnormal posture, the system checks whether the pressure values ​​of the pressure-sensitive units at different locations deviate significantly from the data under normal sitting posture over a period of time. If a deviation persists for an extended period, the child's posture is deemed abnormal, and the guardian is notified via a mobile app. The guardian then further assesses the child's posture. If the guardian determines it is abnormal, they adjust the inflation level of the airbag lumbar support 502 at different locations to assist in adjusting and fixing the child's posture. If the guardian determines that the sitting posture is normal, the relevant sitting posture data will be entered into the database for storage.

[0065] Furthermore, the head and neck restraint part 40 is hinged to the top of the seat back, and the inner wall of the cavity is made of memory foam wrapped with flexible silicone, and the inner diameter of the cavity is adjustable; there are pre-set semi-circular neck air cushions 403 on both sides. When the semi-circular neck air cushions 403 are in the uninflated state, they are built into the head fixing chamber 401. After being triggered, they expand within milliseconds to form a ring-shaped neck support.

[0066] In one embodiment, after a child is placed in a child safety seat, the pressure-sensitive unit matrix detects the pressure distribution in the lower back in real time. If the pressure value of the sensor group is detected to be lower than the threshold, it is determined to be a hunchback posture or other abnormal posture. The controller starts the air pump to inject appropriate air pressure into the air chambers, pushing the airbag lumbar support 502 forward to forcibly correct the sitting posture to the preset standard sitting posture, and reminds the guardian through a buzzer.

[0067] Furthermore, a silicone buffer layer is laid on the inner side of the anti-tipping turn-around cover 30. When the vehicle is involved in a frontal collision: the acceleration sensor activates and detonates the facial airbag assembly, and simultaneously triggers the inflation of the neck airbag to lock the relative position of the head; the anti-tipping turn-around cover 30 unfolds before the facial airbag assembly is detonated and forms a lock. The head fixing chamber 401 and the flip cover form a rigid support frame, and the silicone buffer layer can absorb the impact kinetic energy through compression deformation.

[0068] Furthermore, the side protective wings 50 are located on the left and right sides of the main body of the cockpit 10; the side protective wings 50 have cavities inside, and the cavities house foldable anti-side impact airbags 501. The airbag triggering mechanism is that the anti-side impact airbag 501 is triggered by a collision sensor, and after inflating, it covers the outer side of the child's shoulder to hip, while forming a lateral linkage enclosure with the head fixation chamber 401.

[0069] Furthermore, when the vehicle is subjected to lateral force, the collision sensor triggers the inflation of the anti-side impact airbag 501; the anti-tipping turn-around cover 30 deploys, and the neck airbag is simultaneously deployed. The lumbar support sensor group 20 monitors the displacement in real time. If the lateral displacement of the child's body is detected to exceed the threshold, the corresponding side airbag is depressurized to avoid secondary impact.

[0070] Furthermore, the anti-tipping rotating cover 30 is connected to the head and neck restraint part 40 via a rotating hinge. After unfolding, it forms an approximately hemispherical semi-enclosed structure with the head fixing chamber 401. The inner silicone buffer layer is 5mm-8mm thick. A facial buffer airbag group is pre-embedded on the inside of the flip cover. The facial buffer airbag group is triggered by an acceleration sensor to detonate. When the facial buffer airbag group is fully unfolded, it can cover the area from the cheekbone to the jaw.

[0071] It should be noted that the anti-tipping rotating cover 30 can be manually deployed and locked. If the anti-tipping rotating cover 30 is deployed when an accident occurs, the face cushioning airbag assembly inside the anti-tipping rotating cover 30 will be directly detonated. If the anti-tipping rotating cover 30 is not deployed, the deployment and locking of the anti-tipping rotating cover 30 will be performed first, and then the face cushioning airbag assembly inside the anti-tipping rotating cover 30 will be activated.

[0072] like Figure 6 and Figure 7 As shown, in one embodiment of the present invention, the anti-tipping rotating cover 30 has a perforated window 303, and the area enclosed by the perforated window 303 corresponds to the user's face position; the face cushioning airbag assembly includes an annular cushioning airbag 402; the annular cushioning airbag 402 is disposed on the inner side of the anti-tipping rotating cover 30 and is disposed along the periphery of the perforated window 303; wherein, when the annular cushioning airbag 402 is in the deployed state, the annular cushioning airbag 402 forms a wraparound protection for the user's cheeks and chin.

[0073] Specifically, a single or double window structure is set in the middle section of the anti-tipping rotating cover 30. Taking the single window structure as an example, the opening shape is an inverted trapezoid or a horizontal ellipse, and the opening area accounts for 30%-50% of the front projection area of ​​the flip cover. This allows the anti-tipping rotating cover 30 to obtain a wider field of vision when unfolded, making it convenient for guardians and children to interact.

[0074] Furthermore, the facial cushioning airbag assembly consists of two annular cushioning airbags 402 symmetrically arranged along both sides of the perforated window 303. Each annular cushioning airbag 402 has an independent inflation tube inside, with the tube's ends connected to the central air chamber. The air chamber is equipped with a miniature gas generator, which inflates within milliseconds after being triggered by an electrical signal. During inflation, the annular cushioning airbags 402 expand to both sides along the edge of the perforated window 303: the upper folding section unfolds first and extends diagonally downwards, covering the area from the cheekbone to the angle of the jaw; the middle turning section bends along the direction of the earlobe, forming a turning arc that covers the angle of the jaw. When fully unfolded, it forms a close fit to the cheeks and back of the head, leaving space for the mouth and nose at the front to prevent suffocation.

[0075] Preferably, the silicone buffer layer and the facial airbag assembly provide composite cushioning for better absorption of the impact of head tilting forward.

[0076] In one embodiment of the present invention, a flexible partition 3031 is provided around the perforated window 303. One end of the flexible partition 3031 is hinged to the edge of the perforated window 303; the other end of the flexible partition 3031 is engaged with the edge away from the hinged side of the perforated window 303; when the flexible partition 3031 is unfolded, the flexible partition 3031 covers the area enclosed by the perforated window 303 to form a closed observation window.

[0077] In one embodiment, the flexible partition 3031 may be a thin film with a thickness in the millimeter range, the film being transparent in color, and its light-transmitting area matching the area of ​​the perforated window 303.

[0078] Optionally, the surface of the flexible partition 3031 is distributed with a large number of through holes for breathing.

[0079] Preferably, the flexible partition 3031 uses a mesh screen, which is thinner and lighter while avoiding the risk of suffocation, and allows for better interaction between the inside and outside.

[0080] Optionally, the retractable buckle uses a magnetic buckle, which includes a cylindrical neodymium iron boron magnet and a corresponding steel locking groove, making it more convenient to use.

[0081] In one embodiment, a contact sensor is pre-embedded on the inner side of the flexible partition 3031. When the flexible partition 3031 is folded to the outer locking position, the contact sensor sends a signal to the controller, triggering the LED backlight strip to light up around the edge of the hollow window 303, which facilitates better observation and monitoring of children by guardians at night or in darker environments.

[0082] like Figure 10 and Figure 11 As shown, in one embodiment of the present invention, the anti-tipping rotating cover 30 includes a first curved guard plate 301, a second curved guard plate 302, and a locking mechanism; the first curved guard plate 301 is fixedly disposed in the head fixing chamber 401; the second curved guard plate 302 is movably disposed in the head fixing chamber 401, and the second curved guard plate 302 rotates circumferentially along the arc trajectory of the upper surface of the first curved guard plate 301; the head fixing chamber 401 includes a limiting groove; wherein, when the anti-tipping rotating cover 30 is not unfolded, the inner side of the second curved guard plate 302 and the outer side of the first curved guard plate 301 are locked to each other by the locking mechanism; when the anti-tipping rotating cover 30 is in the fully unfolded state, the lower end of the second curved guard plate 302 is inserted into the limiting groove to form a semi-enclosed structure.

[0083] Specifically, the first curved guard plate 301 and the second curved guard plate 302 are both arc structures. When the anti-tipping rotating cover 30 is in the un-deployed state, the first curved guard plate 301 and the second curved guard plate 302 overlap each other.

[0084] Furthermore, stepper motors 305 and gears are provided at both ends of the second curved protective plate 302 to control the rotation of the second curved protective plate 302. When a collision risk is detected, the anti-tipping rotating cover 30 changes from the un-unfolded state to the fully-unfolded state. The stepper motors 305 control the second curved protective plate 302 to rotate around the hinge until it rotates to the limit position and the lower end of the second curved protective plate 302 is embedded in the limit groove.

[0085] Furthermore, the locking mechanism employs an electromagnetic locking mechanism 304. Multiple cooperating electromagnetic locking mechanisms 304 are provided on the upper surface of the first curved guard plate 301 and the lower surface of the second curved guard plate 302. When the first curved guard plate 301 and the second curved guard plate 302 are in an unfolded state, the current supplied to the electromagnetic locking mechanism 304 increases, causing the second curved guard plate 302 to be magnetically fixed to the upper end of the first curved guard plate 301. When the first curved guard plate 301 and the second curved guard plate 302 receive a pre-unfolding or fully unfolding command, the current supplied to the electromagnetic locking mechanism 304 decreases or becomes zero, releasing the magnetic fixation between the first curved guard plate 301 and the second curved guard plate 302. The second curved guard plate 302 is then rotated by a stepper motor 305 to a designated position. Alternatively, the rotation of the second curved guard plate 302 to the limiting groove can be achieved manually.

[0086] Optionally, the electromagnetic locking mechanism 304 is composed of a neodymium magnet energized by an external controllable power supply.

[0087] Optionally, neodymium magnets are embedded on both sides of the lower end of the second curved guard plate 302 to form magnetic attraction positioning with the magnetic sheet in the limiting groove, thereby eliminating displacement caused by high-frequency vibration.

[0088] It should be noted that the rotation angle between the first curved protective plate 301 and the second curved protective plate 302 can be controlled by the stepper motor 305 and adjusted according to the actual situation, ultimately forming a semi-open enclosure structure. When the anti-tipping rotating cover 30 changes from the open state to the closed state, it can be achieved by controlling the second curved protective plate 302 to flip through the stepper motor 305, or by manually controlling the second curved protective plate 302 to flip upward.

[0089] In one embodiment of the present invention, the oxygen supply mechanism 90 includes an oxygen tank, an oxygen delivery channel, an adjustable angle nozzle, and an electromagnetic valve; the oxygen tank is embedded in the back of the main body 10 of the cabin, and the oxygen tank is connected to the adjustable angle nozzles on both sides of the head and neck restraint part 40 through the oxygen delivery channel; the electromagnetic valve is located in the middle section of the oxygen delivery channel, and the electromagnetic valve is electrically connected to the fire detection unit 1004 of the child safety seat; an emergency alarm button and a wireless communication module are embedded in the front end of the seat cushion, and the wireless communication module is connected to the remote rescue platform in real time.

[0090] Specifically, the oxygen cylinder is secured to the anti-collision frame inside the seat cushion or to the anchoring interface 80 area away from the base 60 in the recessed area of ​​the seat back using double safety buckles to prevent leakage caused by collision and compression. The oxygen delivery channel is composed of multi-layer flexible flame-retardant silicone tubing, wrapped with corrugated metal hoses on the outside, extending from the seat cushion through the reserved channels inside the seat back to both sides of the headrest. The adjustable nozzle initially defaults to an upward angle of 45°, and the spray direction can be manually or electrically adjusted via a built-in ball hinge. The adjustment range is from 0° forward to 30° downward, ensuring that the oxygen flow avoids the area directly inhaled by the mouth and nose. The electromagnetic valve is linked to the fire detection unit 1004, and automatically opens the oxygen delivery channel when the smoke concentration exceeds the set threshold or the temperature rises abnormally and far exceeds the normal temperature level.

[0091] Furthermore, an anti-accidental triggering mechanism is implemented: the oxygen supply mechanism 90 is activated only when the following conditions are met simultaneously: the fire detection unit 1004 confirms a fire; the air pressure sensor built into the child safety seat detects an abnormally rapid drop in the vehicle's air pressure; and the seat belt 70 is in the locked state and fastened. If the seat belt 70 is not fastened, the oxygen supply mechanism 90 remains closed to prevent the oxygen nozzle from malfunctioning when the child is removed from the child safety seat.

[0092] Furthermore, oxygen concentration control: By using a flow-limiting orifice at the nozzle and a pulsed release mode, a preset amount of oxygen is released at fixed intervals to control the oxygen flow and avoid excessively high local concentrations; and a filter module is installed at the end of the nozzle to prevent smoke particles from entering the respiratory tract with the oxygen.

[0093] Furthermore, the oxygen supply mechanism 90 is intelligently linked with the fire extinguishing device, prioritizing the extinguishing of the fire source before supplying oxygen, thus avoiding the risk of fueling combustion.

[0094] Furthermore, the emergency alarm system can be activated by manually pressing the emergency alarm button. The emergency alarm system can also be linked with the fire detection unit 1004 and the vital signs monitoring unit 1005. When an accident is detected and the child is unconscious or breathing rapidly and unable to manually activate the alarm, or in other emergency situations, the system will automatically activate the alarm.

[0095] It should be noted that the main control processor 1003 in this vehicle updates the latest historical database of vehicle collisions every week in order to more accurately predict the probability of a collision.

[0096] It should be noted that the detection control method, detection control system, and child safety seat described in the instruction manual are illustrated using an environment installed inside a vehicle. However, the detection control method, detection control system, and child safety seat are not limited to the use environment inside a vehicle. They are also applicable to other similar vehicle environments, or to virtual or real-world scenarios that simulate similar environmental requirements.

[0097] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A detection and control method applied to a child safety seat, characterized in that, include: The vehicle's dynamic parameters and surrounding interaction parameters are collected through a multi-sensor array; A spatiotemporal model is established based on the historical data of the vehicle's operation. The dynamic parameters and the surrounding interaction parameters are input into the spatiotemporal model to output a multi-level collision risk level; Based on the multi-level collision risk level, the child safety seat's airbags and anti-tipping turn-off cover are pre-deployed or fully deployed. When the anti-tipping rotating cover performs the pre-expansion action or the fully expanded action, the user's posture parameters are obtained, and it is determined whether the user's posture conflicts with the expansion of the anti-tipping rotating cover. If the determination is correct, then the user's posture will be assisted by sound and light reminders, tightening the seat belt, and adjusting the inflation saturation of the airbag.

2. The detection and control method according to claim 1, characterized in that, Also includes: When an abnormal oxygen concentration or a sudden temperature gradient change is detected in the vehicle, an emergency oxygen supply and thermal protection coordinated strategy is triggered: The fire extinguishing device on the back of the seat is connected to the flame detection device and sprays fire extinguishing agent in a directional and quantitative manner toward the location of the flame. Oxygen flow is released through an oxygen supply mechanism connected to the head and neck restraints, and the oxygen injection direction is adaptively adjusted based on the child's head and neck posture. When the flame detection device detects a flame or detects that the surrounding environment is flammable, the oxygen supply mechanism controls the oxygen supply or stops the oxygen supply. When a fire occurs, execute the multi-location alarm operation: Send an emergency distress signal containing seat position information via the vehicle communication module; Activate the near-field positioning beacon to generate a periodic navigation signal that combines acoustic waves and radio frequency.

3. A detection and control system, characterized in that, The detection and control system is capable of implementing the detection and control method as described in any one of claims 1-2, and the detection and control system includes: A multi-source perception module (1001) is used to acquire the surrounding interaction parameters and the dynamic parameters; the surrounding interaction parameters include relative distance, proximity vector and trajectory prediction; the dynamic parameters include motion direction, velocity change and attitude offset. The impact analysis module (1002) predicts the severity of an accident by analyzing the surrounding interaction parameters and the dynamic parameters. The fire detection unit (1004) determines whether there is a flame or an easily ignitable environment in the vehicle by acquiring image data, smoke concentration data and temperature data inside the vehicle. A vital signs monitoring unit (1005) is used to detect the user's vital signs and sitting posture. The main control processor (1003) executes corresponding protection measures based on the predicted multi-level collision risk levels.

4. The detection and control system according to claim 3, characterized in that, The multi-source sensing module (1001) includes a radar, a camera, a lidar, an ultrasonic sensor, an accelerometer, and a pressure sensing unit; The radar, the camera, the lidar, and the ultrasonic sensor are arranged at the front, side, and rear of the child safety seat; The accelerometer and the pressure sensor are arranged around the periphery of the vehicle.

5. The detection and control system according to claim 4, characterized in that, The fire detection unit (1004) includes a smoke detection device and a temperature sensor; The vital signs monitoring unit (1005) includes a pressure sensing unit and a heart rate detection unit, which are arranged in the waist, abdomen, shoulder, leg and chest areas of the child safety seat.

6. A child safety seat, characterized in that, The child safety seat is equipped with a detection and control system as described in any one of claims 3-5, and the child safety seat includes: The cockpit body (10) includes a seat back and a seat cushion. The head and neck restraint part (40) is located at the upper end of the back of the seat. The head and neck restraint part (40) includes a head fixing chamber (401), and a semi-circular neck air cushion (403) is embedded in the inner wall of the head fixing chamber (401). Anti-tipping rotating cover (30), the anti-tipping rotating cover (30) is located at the upper end of the head fixing chamber (401); When the anti-tipping rotating cover (30) is unfolded, the anti-tipping rotating cover (30) and the head fixing chamber (401) form a semi-enclosed structure; A facial cushioning airbag assembly is located on the inner side of the anti-tipping rotating cover (30).

7. The child safety seat according to claim 6, characterized in that, The anti-tipping rotating cover (30) has a perforated window (303), and the area enclosed by the perforated window (303) corresponds to the position of the user's face. The facial cushioning airbag assembly includes an annular cushioning airbag (402); the annular cushioning airbag (402) is located on the inner side of the anti-tipping rotating cover (30) and is arranged along the periphery of the perforated window (303); When the annular airbag (402) is in the deployed state, the annular airbag (402) provides wraparound protection for the user's cheeks and jaw.

8. The child safety seat according to claim 7, characterized in that, A flexible partition (3031) is provided around the perforated window (303), and one end of the flexible partition (3031) is hinged to the edge of the perforated window (303). The other end of the flexible partition (3031) is engaged with the edge away from the hinged side of the perforated window (303); When the flexible partition (3031) is unfolded, the flexible partition (3031) covers the area enclosed by the perforated window (303) to form a closed observation window.

9. The child safety seat according to claim 6, characterized in that, The anti-tipping rotating cover (30) includes a first curved guard plate (301), a second curved guard plate (302), and a locking mechanism; The first curved protective plate (301) is fixedly disposed in the head fixing chamber (401); The second curved protective plate (302) is movably disposed in the head fixing chamber (401), and the second curved protective plate (302) rotates circumferentially along the arc trajectory of the upper surface of the first curved protective plate (301); The head fixation chamber (401) includes a limiting groove; When the anti-tipping rotating cover (30) is in the unfolded state, the inner side of the second curved guard plate (302) and the outer side of the first curved guard plate (301) are locked by a locking mechanism. When the anti-tipping rotating cover (30) is in the fully unfolded state, the lower end of the second curved guard plate (302) is inserted into the limiting groove to form the semi-enclosed structure.

10. The child safety seat according to claim 6, characterized in that, The child safety seat also includes: Oxygen supply mechanism (90), the oxygen supply mechanism (90) includes an oxygen tank, an oxygen delivery channel, an adjustable angle nozzle and an electromagnetic valve; The oxygen tank is embedded in the back of the cockpit body (10), and the oxygen tank is connected to the adjustable angle nozzles on both sides of the head and neck restraint part (40) through the oxygen delivery channel. The electromagnetic valve is located in the middle section of the oxygen delivery channel, and the electromagnetic valve is electrically connected to the fire detection unit (1004) of the child safety seat. An emergency alarm button and a wireless communication module are embedded in the front end of the seat cushion. The wireless communication module is connected to the remote rescue platform in real time.

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