Airbag-based protection apparatus and control method

Abstract

Disclosed in the present invention are an airbag-based protection apparatus and a control method. The apparatus comprises at least one airbag for protecting different body parts, a gas channel, a steering engine, an eccentric cam, a valve, a high-pressure gas cylinder, a motion sensor, a gas dynamic monitoring module and a first controller, wherein the first controller is used for controlling, when a target object falling down is determined according to motion data of the target object that is collected by the motion sensor, the steering engine to drive the eccentric cam to open the valve, so as to inflate the airbag, monitoring in real time a change in the volume of a gas in the high-pressure gas cylinder by means of the gas dynamic monitoring module, and when the volume of a gas reduced from the high-pressure gas cylinder is equal to the total gas volume of all airbags, controlling the steering engine to drive the eccentric cam to close the valve, so as to stop inflating. The present invention can perform personalized configuration on an airbag protection region according to requirements, and accurately inflate an airbag according to a change in the volume of a gas in a high-pressure gas cylinder without the need for frequently replacing the high-pressure gas cylinder, thereby improving the durability and practicability of the high-pressure gas cylinder.

Description

Airbag protection device and control method Technical Field

[0001] The present application relates to the technical field of safety protection devices, and in particular to an airbag protection device and a control method thereof. Background Art

[0002] Falls and collisions are common in modern society, especially for the elderly, frail, or those working in high-risk occupations. These injuries can result in serious injuries, including fractures and concussions. Traditional protective measures, such as crutches and walkers, have limitations. These devices require hand-holding or support, making them inconvenient for those with limited mobility. Furthermore, their protective capabilities are limited, rendering them ineffective in protecting against falls or collisions. Therefore, providing a safe and reliable device to mitigate or prevent the harm caused by falls and collisions is crucial. As an innovative protective device, airbags primarily protect users from falls during daily activities such as walking, running, and cycling, minimizing serious injury. These protective devices offer excellent protection, strong adaptability, and portability, and can be integrated with various wearable devices. These features make them highly effective in protecting users.

[0003] Existing airbag protection devices usually include key components such as airbags, inflation mechanisms, gas cylinders, and power supply devices. These components are cleverly embedded in everyday wearable items such as belts, clothing, and helmets so that users can easily incorporate them into their daily lives. The airbag protection device is controlled by a control system. When a user falls, the microcontroller immediately activates the inflation mechanism, allowing the gas cylinder to quickly release gas, providing sufficient gas for the airbag to inflate. The inflated airbag can effectively protect the user and reduce the possibility of physical injury caused by falls. However, the existing control method does not support the control of the amount of gas charged or released by the gas cylinder. When the airbag is full of gas, the remaining gas in the gas cylinder will also be wasted, resulting in the inability to rationally utilize the gas in the gas cylinder. Technical issues

[0004] In view of this, the present application provides an airbag protection device and a control method to solve the problem of poor practicality of the gas cylinder of the existing airbag protection device. Technical Solutions

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide an airbag protection device, which includes: an airbag, a gas channel, a servo, an eccentric cam, a valve, a high-pressure gas cylinder, a motion sensor, a gas dynamic monitoring module and a first controller; the air inlet and the air outlet of the gas channel are respectively connected to the high-pressure gas cylinder and the airbag, the servo, the eccentric cam and the valve are arranged in the gas channel, the drive shaft of the servo is connected to the eccentric cam, the eccentric cam abuts the valve to control the opening or closing of the valve, and the valve is arranged on the gas outlet of the high-pressure gas cylinder; the first controller is electrically connected to the motion sensor, the gas dynamic monitoring module and the servo respectively; the motion sensor is used to collect motion data of the target object; the gas dynamic monitoring module is used to monitor the change of the gas volume in the high-pressure gas cylinder in real time; the first controller is used to determine that the target object falls according to the motion data, control the servo to drive the eccentric cam to open the valve to inflate the airbag, and when the reduced gas volume in the high-pressure gas cylinder is equal to the total gas volume of all airbags, control the servo to drive the eccentric cam to close the valve to stop inflation.

[0006] As a further improvement of the present application, it also includes a timer, which is electrically connected to the first controller and is used to start timing when it is determined based on the motion data that the target object has fallen, and to determine that the target object has fallen if the acceleration and angular velocity of the target object have not returned to a preset range within a preset timing period.

[0007] As a further improvement of the present application, the gas dynamic monitoring module includes a temperature sensor and a pressure sensor for collecting the temperature and pressure in the high-pressure gas cylinder in real time; the first controller is also used to calculate the real-time gas volume of the high-pressure gas cylinder based on the real-time temperature and pressure, and then calculate the volume difference between the real-time gas volume and the initial gas volume in the high-pressure gas cylinder, and when the volume difference is equal to the gas volume of the airbag, control the servo to drive the eccentric cam to close the valve to stop inflation.

[0008] As a further improvement of the present application, it also includes a second controller, a communication module, a positioning module, and a voice module electrically connected to the second controller. The second controller is electrically connected to the first controller. The first controller is also used to send a fall signal to the second controller. After receiving the fall signal, the second controller is used to control the positioning module to obtain the current positioning signal, and then send the current positioning signal to the cloud server through the communication module, and use the voice module and the communication module to establish a voice call with the cloud server.

[0009] As a further improvement of the present application, it also includes a power supply module electrically connected to the first controller, for supplying power to the first controller, the motion sensor, the gas dynamic monitoring module, and the servo.

[0010] As a further improvement of the present application, the airbag includes at least one airbag for protecting different parts of the body.

[0011] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a control method for an airbag protection device, which is one of the above-mentioned airbag protection devices, the airbag protection device includes an airbag, a gas channel, a servo, an eccentric cam, a valve, a high-pressure gas cylinder, a motion sensor, a gas dynamic monitoring module and a first controller; the method includes: the motion sensor collects motion data of the target object; when the first controller determines that the target object falls according to the motion data, the servo drives the eccentric cam to open the valve to inflate the airbag; the gas dynamic monitoring module monitors the change in the gas volume in the high-pressure gas cylinder in real time; when the reduced gas volume in the high-pressure gas cylinder is equal to the total gas volume of all airbags, the first controller controls the servo to drive the eccentric cam to close the valve to stop inflation.

[0012] As a further improvement of the present application, the control system also includes a timer; the step of the first controller determining whether the target object has fallen based on the motion data includes: the first controller constructs a sliding window data set for the motion data, and the size and step size of the sliding window are pre-set; the first controller inputs the sliding window data set into a pre-trained convolutional neural network for prediction to obtain a prediction result; when the prediction result is a fall behavior, the first controller starts the timer; the first controller determines whether the acceleration and angular velocity of the target object have returned to a preset range within the preset timing period; if so, the first controller determines that the target object has not fallen; if not, the first controller determines that the target object has fallen.

[0013] As a further improvement of the present application, the gas dynamic monitoring module includes a temperature sensor and a pressure sensor; the steps of the gas dynamic monitoring module monitoring the changes in the gas volume in the high-pressure gas cylinder in real time include: the temperature sensor and the pressure sensor collect the temperature and pressure in the high-pressure gas cylinder in real time; the first controller calculates the real-time gas volume of the high-pressure gas cylinder based on the real-time temperature and pressure; the first controller calculates the volume difference between the real-time gas volume and the initial gas volume in the high-pressure gas cylinder, and the initial gas volume is calculated based on the temperature and pressure in the high-pressure gas cylinder before the inflation operation.

[0014] As a further improvement of the present application, the control system also includes a second controller, a communication module, a positioning module, and a voice module; when the first controller determines that the target object has fallen based on the motion data, it controls the servo to drive the eccentric cam to open the valve to inflate the airbag, and also includes: the first controller sends a fall signal to the second controller; after receiving the fall signal, the second controller controls the positioning module to obtain the current positioning signal, and then sends the current positioning signal to the cloud server through the communication module, and uses the voice module and the communication module to establish a voice call with the cloud server. Beneficial effects

[0015] The beneficial effects of the present application are as follows: the airbag protection device of the present application sets a gas dynamic monitoring module in the high-pressure gas cylinder, and uses the first controller to determine that when the target object falls based on the motion data of the target object collected by the motion sensor, controls the servo to drive the eccentric cam to open the valve to inflate the airbag, and monitors the change of the gas volume in the high-pressure gas cylinder in real time through the gas dynamic monitoring module. When the reduced gas volume in the high-pressure gas cylinder is equal to the total gas volume of all airbags, controls the servo to drive the eccentric cam to close the valve to stop inflation. It actually monitors the change of the gas volume in the high-pressure gas cylinder in real time and accurately inflates the airbag, so that there is no need to frequently replace the high-pressure gas cylinder, thereby improving the durability and practicality of the high-pressure gas cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a schematic structural diagram of an airbag protection device according to an embodiment of the present invention;

[0017] FIG2 is a schematic diagram of the system structure of an airbag protection device according to an embodiment of the present invention;

[0018] FIG3 is a flow chart of a method for controlling an airbag protection device according to an embodiment of the present invention. Best Mode for Carrying Out the Invention

[0019] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0020] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features identified. Therefore, features identified as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional designations in the embodiments of this application (such as up, down, left, right, front, back, etc.) are intended only to illustrate the relative positional relationships and movement of components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional designations will also change accordingly. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to such process, method, product, or apparatus.

[0021] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] Figure 1 shows a schematic diagram of the structure of an airbag protection device according to an embodiment of the present invention, and Figure 2 shows a schematic diagram of the system structure of a control system for the airbag protection device according to an embodiment of the present invention. As shown in Figures 1 and 2 , the airbag protection device includes an airbag (not shown), a gas channel 1, a steering gear 2, an eccentric cam 3, a valve 4, a high-pressure gas cylinder 5, a motion sensor 6, a gas dynamics monitoring module 7, and a first controller 8.

[0023] The inlet and outlet of gas channel 1 are connected to the high-pressure gas cylinder 5 and the airbag, respectively. A servo 2, eccentric cam 3, and valve 4 are located within gas channel 1. The drive shaft of servo 2 is connected to eccentric cam 3, which abuts valve 4. The drive shaft of servo 2 drives eccentric cam 3 to rotate. When it rotates to a certain angle, eccentric cam 3 squeezes valve 4 to open it. After further rotation, eccentric cam 3 releases valve 4, closing it. Valve 4 is located on the outlet of high-pressure gas cylinder 5. When valve 4 is open, high-pressure gas cylinder 5 discharges gas into gas channel 1 under pressure. When valve 4 is closed, high-pressure gas cylinder 5 stops discharging gas into gas channel 1.

[0024] The first controller 8 is electrically connected to the motion sensor 6, the gas dynamics monitoring module 7, and the servo 2. The motion sensor 6 is used to collect motion data of the target object. The gas dynamics monitoring module 7 is used to monitor the change in gas volume in the high-pressure gas cylinder 5 in real time. When the first controller 8 determines based on the motion data that the target object has fallen, it controls the servo 2 to drive the eccentric cam 3 to open the valve 4 to inflate the airbag. When the reduced gas volume in the high-pressure gas cylinder 5 equals the total gas volume of all airbags, it controls the servo 2 to drive the eccentric cam 3 to close the valve 4 to stop inflation.

[0025] Specifically, the motion sensor 6 collects the motion data of the target object and transmits it to the first controller 8. The first controller 8 analyzes the motion data to determine whether the target object falls. When it is determined that the target object falls, the first controller 8 controls the servo 2 to drive the eccentric cam 3 to open the valve 4 to inflate the airbag. At this time, the gas dynamic monitoring module 7 starts to monitor the change in the gas volume in the high-pressure gas cylinder 5, and feeds back the change result to the first controller 8. When the reduced gas volume in the high-pressure gas cylinder 5 is equal to the total gas volume of all airbags, the first controller 8 controls the servo 2 to drive the eccentric cam 3 to close the valve 4 to stop inflation. Modes for Carrying Out the Invention

[0026] The airbag protection device of the embodiment of the present invention sets a gas dynamic monitoring module 7 in the high-pressure gas cylinder 5, and uses the first controller 8 to determine that when the target object falls based on the motion data of the target object collected by the motion sensor 6, the steering gear 2 is controlled to drive the eccentric cam 3 to open the valve 4 to inflate the airbag, and the gas dynamic monitoring module 7 is used to monitor the change in the gas volume in the high-pressure gas cylinder 5 in real time. When the reduced gas volume in the high-pressure gas cylinder 5 is equal to the total gas volume of all airbags, the steering gear 2 is controlled to drive the eccentric cam 3 to close the valve 4 to stop inflation. In fact, the change in the gas volume in the high-pressure gas cylinder 5 is monitored in real time, and the airbag is accurately inflated, so that the high-pressure gas cylinder 5 does not need to be frequently replaced, thereby improving the durability and practicality of the high-pressure gas cylinder 5.

[0027] Furthermore, the airbag protection device also includes a timer 9, which is electrically connected to the first controller 8 and is used to start timing when it is determined based on the motion data that the target object has fallen, and to determine that the target object has fallen if the acceleration and angular velocity of the target object have not returned to a preset range within a preset timing period.

[0028] Specifically, when the first controller 8 determines based on the motion data that the target object has fallen, the timer 9 begins counting. During a preset timing period, the timer 9 continuously obtains the acceleration and angular velocity of the target object through the motion sensor 6 and determines whether the acceleration and angular velocity of the target object have returned to a preset range. If the acceleration and angular velocity of the target object have not returned to the preset range, the target object is determined to have fallen. If the acceleration and angular velocity of the target object have returned to the preset range, the target object is determined not to have fallen.

[0029] This embodiment sets a timer 9 to continuously determine the acceleration and angular velocity of the target object when the target object falls, thereby helping to determine whether the target object has really fallen, avoiding the situation where the airbag is deployed due to misidentification, and improving the accuracy of fall determination.

[0030] Furthermore, the gas dynamic monitoring module 7 includes a temperature sensor 71 and a pressure sensor 72, which are used to collect the temperature and pressure in the high-pressure gas cylinder 5 in real time; the first controller 8 is also used to calculate the real-time gas volume of the high-pressure gas cylinder 5 based on the real-time temperature and pressure, and then calculate the volume difference between the real-time gas volume and the initial gas volume in the high-pressure gas cylinder 5, and when the volume difference is equal to the gas volume of the airbag, control the servo 2 to drive the eccentric cam 3 to close the valve 4 to stop inflation.

[0031] It should be noted that the calculation formula for gas volume is as follows:

[0032] ;

[0033] in, is the pressure of the gas, is the moles or mass of the gas, is the volume of the gas, Gas constant, Gas temperature. After obtaining the gas pressure and temperature, the gas volume can be calculated. The initial gas volume can be calculated using the pressure and temperature of the high-pressure gas cylinder 5 before filling.

[0034] Specifically, as high-pressure gas cylinder 5 inflates the airbag, temperature sensor 71 and pressure sensor 72 collect real-time data on the temperature and pressure of high-pressure gas cylinder 5. Based on the temperature and pressure, they calculate the real-time gas volume in high-pressure gas cylinder 5. They then calculate the difference between the real-time gas volume and the initial gas volume, and compare this difference with the airbag's gas volume. If the difference is lower than the airbag's gas volume, high-pressure gas cylinder 5 continues inflating the airbag. If the difference equals the airbag's gas volume, high-pressure gas cylinder 5 stops inflating the airbag.

[0035] Furthermore, the airbag protection device also includes a second controller 10, a communication module 11, a positioning module 12, and a voice module 13 electrically connected to the second controller 10. The second controller 10 is electrically connected to the first controller 8. The first controller 8 is also used to send a fall signal to the second controller 10. After receiving the fall signal, the second controller 10 is used to control the positioning module 12 to obtain the current positioning signal, and then send the current positioning signal to the cloud server through the communication module 11, and use the voice module 13 and the communication module 11 to establish a voice call with the cloud server.

[0036] Specifically, after the first controller 8 determines that the target object has fallen and deploys the airbag to protect the target object, the second controller 10 can also control the positioning module 12 to obtain the target object's current positioning signal, and then send the current positioning signal to the cloud server through the communication module 11. In addition, the voice module 13 and the communication module 11 can also establish a voice call with the cloud server to facilitate inquiries about whether the target object is injured or whether to call the police. The positioning module 12 can achieve triple indoor and outdoor positioning, with the priority of the triple positioning being GPS / Beidou positioning, Wi-Fi positioning, and base station positioning. Through the hybrid positioning method and the design of positioning priority, the accuracy of positioning is guaranteed.

[0037] In this embodiment, the first controller 8 is primarily responsible for fall detection and airbag control, while the second controller 10 is primarily responsible for external high-reliability remote communication, high-precision location tracking, and voice alarms based on the time of the fall. The first and second controllers 8 and 10 transmit data via an internal high-speed UART interface.

[0038] Furthermore, the airbag protection device also includes a power supply module 14 electrically connected to the first controller 8 , for supplying power to the first controller 8 , the motion sensor 6 , the gas dynamic monitoring module 7 , and the steering gear 2 .

[0039] Furthermore, the airbag includes at least one airbag for protecting different parts of the body.

[0040] Specifically, the airbags protecting different body parts in this embodiment primarily include a hip protection airbag, a waist protection airbag, and a head protection airbag. The hip protection airbag serves as the primary airbag, while the waist protection airbag and the head protection airbag serve as optional airbags. Further referring to FIG1 , each airbag protecting a different body part is connected to an air outlet 100 of the gas channel 1 . It should be noted that for ease of description, only three air outlets are shown in the figure, corresponding to the hip protection airbag, the waist protection airbag, and the head protection airbag, respectively. However, this embodiment does not limit the number of air outlets 100, which is specifically set according to the number of airbags.

[0041] This embodiment provides a pre-configured airbag, so that the protection area can be personalized according to the user's fall risk level and needs, meeting the fall protection needs of users of different age groups.

[0042] FIG3 is a flow chart of a control method for an airbag protection device according to an embodiment of the present invention. The airbag protection device includes an airbag, a gas channel, a steering gear, an eccentric cam, a valve, a high-pressure gas cylinder, a motion sensor, a gas dynamic monitoring module, and a first controller. The control method includes:

[0043] Step S101: a motion sensor collects motion data of a target object.

[0044] Step S102: When the first controller determines that the target object has fallen according to the motion data, the first controller controls the steering gear to drive the eccentric cam to open the valve to inflate the airbag.

[0045] Step S103: The gas dynamic monitoring module monitors the change of the gas volume in the high-pressure gas cylinder in real time.

[0046] Step S104: When the reduced gas volume in the high-pressure gas cylinder is equal to the total gas volume of all airbags, the first controller controls the steering gear to drive the eccentric cam to close the valve to stop inflation.

[0047] Specifically, the motion sensor collects the motion data of the target object and transmits it to the first controller. The first controller analyzes the motion data to determine whether the target object falls. When it is determined that the target object falls, the first controller controls the servo to drive the eccentric cam to open the valve to inflate the airbag. At this time, the gas dynamic monitoring module begins to monitor the change in the gas volume in the high-pressure gas cylinder and feeds back the change results to the first controller. When the reduced gas volume in the high-pressure gas cylinder is equal to the total gas volume of all airbags, the first controller controls the servo to drive the eccentric cam to close the valve to stop inflation.

[0048] The airbag protection device of the embodiment of the present invention sets a gas dynamic monitoring module in the high-pressure gas cylinder, uses the first controller to determine that the target object falls based on the motion data of the target object collected by the motion sensor, controls the servo to drive the eccentric cam to open the valve to inflate the airbag, and monitors the change of the gas volume in the high-pressure gas cylinder in real time through the gas dynamic monitoring module. When the reduced gas volume in the high-pressure gas cylinder is equal to the total gas volume of all airbags, controls the servo to drive the eccentric cam to close the valve to stop inflation. It actually monitors the change of the gas volume in the high-pressure gas cylinder in real time and accurately inflates the airbag, so that there is no need to frequently replace the high-pressure gas cylinder, thereby improving the durability and practicality of the high-pressure gas cylinder.

[0049] Furthermore, the control system further includes a timer. The step of determining in step S102 that the target object has fallen according to the motion data by the first controller specifically includes:

[0050] 1. The first controller constructs a sliding window data set for the motion data, and the size and step length of the sliding window are pre-set.

[0051] 2. The first controller inputs the sliding window data set into the pre-trained convolutional neural network for prediction to obtain the prediction result.

[0052] 3. When the predicted result is a fall behavior, the first controller starts a timer.

[0053] 4. The first controller determines whether the acceleration and angular velocity of the target object return to a preset range within a preset timing period.

[0054] 5. If yes, the first controller determines that the target object has not fallen.

[0055] 6. If not, the first controller determines that the target object has fallen.

[0056] Specifically, when the first controller determines, based on the motion data, that the target object has fallen, a timer begins. During a preset timing period, the timer continuously obtains the acceleration and angular velocity of the target object through the motion sensor, and determines whether the acceleration and angular velocity of the target object have returned to a preset range. If the acceleration and angular velocity of the target object have not returned to the preset range, the target object is determined to have fallen. If the acceleration and angular velocity of the target object have returned to the preset range, the target object is determined not to have fallen.

[0057] This embodiment sets a timer to continuously determine the acceleration and angular velocity of the target object when the target object falls, thereby helping to determine whether the target object has really fallen, avoiding misidentification that may cause the airbag to be deployed, and improving the accuracy of fall determination.

[0058] Furthermore, the gas dynamic monitoring module includes a temperature sensor and a pressure sensor. In step S103, the gas dynamic monitoring module monitors the change in the gas volume in the high-pressure gas cylinder in real time, specifically including:

[0059] 1. The temperature sensor and pressure sensor collect the temperature and pressure in the high-pressure gas cylinder in real time.

[0060] 2. The first controller calculates the real-time gas volume of the high-pressure gas cylinder according to the real-time temperature and pressure.

[0061] 3. The first controller calculates the volume difference between the real-time gas volume and the initial gas volume in the high-pressure gas cylinder, where the initial gas volume is calculated based on the temperature and pressure in the high-pressure gas cylinder before the charging operation.

[0062] Specifically, when the high-pressure gas cylinder inflates the airbag, the temperature sensor and pressure sensor collect the temperature and pressure in the high-pressure gas cylinder in real time, and calculate the real-time gas volume in the high-pressure gas cylinder based on the temperature and pressure, and then calculate the volume difference between the real-time gas volume and the initial gas volume. This volume difference is the reduced gas volume in the high-pressure gas cylinder.

[0063] Furthermore, the control system further includes a second controller, a communication module, a positioning module, and a voice module; after the first controller determines, based on the motion data, that the target object has fallen, and controls the steering gear to drive the eccentric cam to open the valve to inflate the airbag, the control system further includes:

[0064] 1. The first controller sends a fall signal to the second controller.

[0065] 2. After receiving the fall signal, the second controller controls the positioning module to obtain the current positioning signal, then sends the current positioning signal to the cloud server through the communication module, and uses the voice module and the communication module to establish a voice call with the cloud server.

[0066] Specifically, when the first controller determines that the target object has fallen and activates the airbag to protect the target object, it can also send a fall signal to the second controller, and the second controller controls the positioning module to obtain the current positioning signal of the target object, and then sends the current positioning signal to the cloud server through the communication module. In addition, the voice module and the communication module can also be used to establish a voice call with the cloud server, which is convenient for inquiring whether the target object is injured, whether an alarm is needed, etc.

[0067] For other details of the technical solutions for implementing each step in the control method of the airbag protection device in the above embodiment, please refer to the description of the airbag protection device in the above embodiment, which will not be repeated here.

[0068] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0069] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An airbag protection device, characterized in that: It includes: Safety Airbag, gas channel, steering gear, eccentric cam, valve, high-pressure gas cylinder, motion sensor, gas dynamic monitoring module and first controller; The air inlet and the air outlet of the gas channel are connected to the high-pressure gas cylinder and the safety airbag respectively. The steering gear, the eccentric cam and the valve are arranged in the gas channel. The driving shaft of the steering gear is connected to the eccentric cam. The eccentric cam abuts against the valve to control the valve to open or close. The valve is arranged on the air outlet of the high-pressure gas cylinder. The first controller is electrically connected to the motion sensor, the gas dynamic monitoring module, and the steering gear respectively; The motion sensor is used to collect motion data of the target object; The gas dynamic monitoring module is used to monitor the change of gas volume in the high-pressure gas cylinder in real time; The first controller is used to control the servo to drive the eccentric cam to open the valve to inflate the airbag when it is determined according to the motion data that the target object has fallen, and when the reduced gas volume in the high-pressure gas cylinder is equal to the total gas volume of all airbags, control the servo to drive the eccentric cam to close the valve to stop inflation.

2. The airbag protection device according to claim 1, characterized in that: It also includes a timer, which is electrically connected to the first controller and is used to start timing when it is determined based on motion data that the target object has fallen, and to determine that the target object has fallen when the acceleration and angular velocity of the target object have not recovered to a preset interval within a preset timing period.

3. The airbag protection device according to claim 1, characterized in that: The gas dynamic monitoring module includes a temperature sensor and a pressure sensor, which are used to collect the temperature and pressure in the high-pressure gas cylinder in real time; The first controller is also used to calculate the real-time gas volume of the high-pressure gas cylinder based on the real-time temperature and pressure, and then calculate the volume difference between the real-time gas volume and the initial gas volume in the high-pressure gas cylinder, and when the volume difference is equal to the gas volume of the airbag, control the servo to drive the eccentric cam to close the valve to stop inflation.

4. The airbag protection device according to claim 1, characterized in that: It also includes a second controller, a communication module, a positioning module, and a voice module electrically connected to the second controller, the second controller is electrically connected to the first controller, the first controller is also used to send a fall signal to the second controller, the second controller is used to control the positioning module to obtain the current positioning signal after receiving the fall signal, and then send the current positioning signal to the cloud server through the communication module, and use the voice module and the communication module to establish a voice call with the cloud server.

5. The airbag protection device according to claim 1, characterized in that: It also includes a power supply module electrically connected to the first controller, which is used to supply power to the first controller, the motion sensor, the gas dynamic monitoring module, and the steering gear.

6. The airbag protection device according to claim 1, characterized in that: The airbag includes at least one airbag for protecting different body parts.

7. A method for controlling an airbag protection device, characterized in that: The method is applied to the airbag protection device according to any one of claims 1 to 6, wherein the airbag protection device comprises an airbag, a gas channel, a steering gear, an eccentric cam, a valve, a high-pressure gas cylinder, a motion sensor, a gas dynamic monitoring module and a first controller; the method comprises: The motion sensor collects motion data of the target object; When the first controller determines that the target object has fallen according to the motion data, the first controller controls the steering gear to drive the eccentric cam to open the valve to inflate the airbag; The gas dynamic monitoring module monitors the change of gas volume in the high-pressure gas cylinder in real time; When the reduced gas volume in the high-pressure gas cylinder is equal to the total gas volume of all the airbags, the first controller controls the steering gear to drive the eccentric cam to close the valve to stop inflation.

8. The control method of the airbag protection device according to claim 7, characterized in that: The control system also includes a timer; The step of the first controller determining that the target object has fallen according to the motion data comprises: The first controller constructs a sliding window data set for the motion data, and the size and step length of the sliding window are preset; The first controller inputs the sliding window data set into a pre-trained convolutional neural network for prediction to obtain a prediction result; When the prediction result is a falling behavior, the first controller starts the timer; The first controller determines whether the acceleration and angular velocity of the target object are restored to a preset interval range within a preset timing period; If so, the first controller determines that the target object has not fallen; If not, the first controller determines that the target object has fallen.

9. The control method of the airbag protection device according to claim 7, characterized in that: The gas dynamic monitoring module includes a temperature sensor and a pressure sensor; The step of the gas dynamic monitoring module monitoring the change of the gas volume in the high-pressure gas cylinder in real time includes: The temperature sensor and the pressure sensor collect the temperature and pressure in the high-pressure gas cylinder in real time; The first controller calculates the real-time gas volume of the high-pressure gas cylinder according to the real-time temperature and pressure; The first controller calculates a volume difference between the real-time gas volume and an initial gas volume in the high-pressure gas cylinder, where the initial gas volume is calculated based on the temperature and pressure in the high-pressure gas cylinder before a charging operation.

10. The control method of the airbag protection device according to claim 7, characterized in that: The control system also includes a second controller, a communication module, a positioning module, and a voice module; After the first controller determines that the target object falls according to the motion data, controls the steering gear to drive the eccentric cam to open the valve to inflate the airbag, the method further includes: The first controller sends a fall signal to the second controller; After receiving the fall signal, the second controller controls the positioning module to obtain the current positioning signal, then sends the current positioning signal to the cloud server through the communication module, and uses the voice module and the communication module to establish a voice call with the cloud server.

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