CN105361277B - Garment with function of protecting wearer from being hurt by falling and method for protecting wearer from being hurt by falling - Google Patents

Abstract

The invention discloses a garment with a function of protecting a wearer from being hurt by falling and a method for protecting the wearer from being hurt by falling. The garment comprises a garment body with a collar and sleeves, and air bags are arranged at the collar, at a position, corresponding to the waist of a human body, of the garment body and at positions, corresponding to elbows and wrists of the human body, of the sleeves respectively. An air bag controller is arranged on the back of the garment body and comprises a controller body, an AD (analog-digital) converter, a power supply module, a trigger module and a gas generator. A motion detection module is arranged at a position, corresponding to the chest of the human body, of the garment body and connected with the AD converter which is connected with the controller. The controller is connected with the trigger module which is connected with the gas generator, the gas generator is respectively connected with the air bags, and the power supply module is respectively connected with the controller body, the trigger module and the gas generator. The garment is capable of protecting the head, the neck, shoulders, elbows, wrists and the waist of the human body.

Description

Clothes and method for preventing people from falling

technical field

The invention belongs to clothes, and in particular relates to clothes and a method for preventing people from falling.

Background technique

As people grow older, people's metabolism slows down, their responses are sluggish, their physical functions decline, and they are prone to falls. Existing protection method is exactly to wear the protective pad that sponge or foaming material are made in clothes. This method will cause the clothes to be bloated, and the wearer is inconvenient to move; at the same time, due to the limitation of the thickness of the clothes, it is difficult to provide sufficient protection for the user.

Since people often have subconscious self-protection actions when they wrestle, for example, they usually use their hands to support the ground, then the hands, wrists, and shoulders will be strongly impacted by external forces in a short period of time, which may easily cause elbows, wrists, etc. and shoulder fractures. It can be seen that if these important parts can be well protected, the probability of the elderly falling or breaking a bone will be greatly reduced.

Contents of the invention

The object of the present invention is to provide a kind of clothes and method for preventing people from falling, so as to protect the head, neck, shoulders, elbows, wrists and waist of the human body.

The clothes for preventing people from falling according to the present invention include a clothes body, on which a collar and sleeves are arranged, where the clothes body corresponds to the waist of the human body, and the sleeves correspond to the elbows and wrists of the human body , and the collar is equipped with airbags;

The back of the clothes body is provided with an airbag controller, which includes a controller, an AD converter, a power module, a trigger module and a gas generator,

The clothing body is provided with a motion detection module at the chest position corresponding to the human body, which is used to detect three-dimensional acceleration and relative rotation angle;

The motion detection module includes a three-axis acceleration sensor and a two-axis gyroscope, the three-axis acceleration sensor and the two-axis gyroscope are respectively connected with an AD converter, the AD converter is connected with a controller, the controller is connected with a trigger module, and the trigger module is connected with the The gas generator is connected, the gas generator is connected with each airbag respectively, and the power module is connected with the controller, the trigger module and the gas generator respectively;

The three-axis acceleration sensor outputs the acceleration values on the x, y, and z axes, the two-axis gyroscope outputs the angular rate of the human body's rotation angle, and the AD converter converts the acceleration values and angular rates of each axis into digital signals and sends them to A controller, the controller calculates the acceleration intensity value a and the inclination angle value θ based on the digital signal, and compares the acceleration intensity value a with the preset acceleration intensity threshold value a _max , and simultaneously compares the inclination angle value θ with the Compared with the preset tilt angle threshold θ _max , when a > a _max and θ > θ _max , it is considered that the person will fall, and the controller starts the trigger module to make the gas generator inflate the airbag, and just when the person falls Before opening the airbag; otherwise, it is considered that the person will not fall, and the controller will not activate the gas generator;

The calculation formulas of the acceleration intensity value a and the inclination angle value θ are as follows:

Where: a ₁ is the acceleration value on the x-axis, a ₂ is the acceleration value on the y-axis, and a ₃ is the acceleration value on the z-axis direction;

Wherein: g=9.8Nm/s ² .

The airbag controller also includes a photoelectric coupling module connected to the controller. When a>a _max and θ>θ _max , if the trigger module is not activated, the photoelectric coupling module activates the gas generator to inflate the airbag.

The airbag controller also includes an early warning diagnostic module connected to the controller, which is used to monitor the operating status of the airbag controller and the motion detection module, and when a fault occurs, the fault is diagnosed and debugged and an alarm is issued, while providing fault diagnosis and positioning mechanism.

The airbag, the airbag controller and the motion detection module are all installed in the interlayer of the clothes.

A method for preventing people from falling of the present invention, the user wears the clothes preventing people from falling as described in the present invention, comprising the following steps:

Step 1, the three-axis acceleration sensor outputs the acceleration values on the x, y, and z axes, the two-axis gyroscope outputs the angular rate of the human body's rotation angle, and the AD converter converts the acceleration values and angular rates of each axis into digital signals and sent to the controller;

Step 2, the controller receives the digital signal and calculates the acceleration intensity value a and the inclination angle value θ, and compares the acceleration intensity value a with the preset acceleration intensity threshold value a _max , and simultaneously compares the inclination angle value θ Compared with the preset tilt angle threshold θ _max , when a>a _max and θ>θ _max , it is considered that the person will fall, and the controller activates the trigger module to make the gas generator inflate the airbag, and just when the person falls Open the airbag before falling; otherwise, it is considered that the person will not fall, the controller does not start the gas generator, and enters step 1;

The calculation formulas of the acceleration intensity value a and the inclination angle value θ are as follows:

Where: a ₁ is the acceleration value on the x-axis, a ₂ is the acceleration value on the y-axis, and a ₃ is the acceleration value on the z-axis direction;

Wherein: g=9.8Nm/s ² .

In the step 1, the early warning diagnosis module monitors the operating status of the motion detection module in real time, and when a fault occurs, it diagnoses and debugs the fault and sends an alarm, and provides a mechanism for fault diagnosis and location;

In the step 2, the early warning diagnosis module monitors the operating status of the airbag controller in real time, and when the airbag controller fails, it diagnoses and debugs the failure and issues an alarm, and provides a mechanism for fault diagnosis and location.

In the step 2, when a>a _max and θ>θ _max , if the trigger module is not activated, the photoelectric coupling module activates the gas generator to inflate the airbag.

The present invention has the following advantages:

(1) Since airbags are installed at several key positions corresponding to the neck, elbow, wrist and waist of the human body, the airbags installed on the neck are used to protect the back of the head, neck and shoulders of the personnel , the airbag installed at the waist is used to protect the waist of the person, the airbag installed at the elbow is used to protect the elbow of the person, and the airbag installed at the wrist is used to protect the wrist of the person; when the controller judges that the person is about to fall When the collision occurs, start the trigger module immediately to make the gas generator inflate the airbags, and deploy the airbags before the person touches the ground, so as to consume the collision energy and avoid direct contact between the human body and the ground to cause injury;

(2) The present invention reduces the probability of distal radius fractures, proximal humerus fractures, lumbar vertebral compression fractures, and femoral neck fractures caused by falls of the wearer (especially the elderly) by rationally laying out the installation positions of the airbags. Can play a very good protective role for the elderly;

(3) The calculation and processing speed of the airbag controller is fast, and its control accuracy can reach millisecond level, which can ensure the system has high real-time performance and reliability;

(4) Only when a > a _max and θ > θ _max , the system activates the trigger module, so that the gas generator inflates the airbag, avoiding the inconvenience and economic loss caused by the system's false activation of the trigger module;

(5) When a > a _max and θ > θ _max , if the system does not start the trigger module, the gas generator can also be triggered by the photoelectric coupling module, which helps the airbag system to deploy in time and accurately, greatly improving the reliability of the system ;

(6) It can monitor the operating status of the airbag controller and motion detection module in real time. When a fault occurs, it can diagnose and debug the fault and issue an alarm. At the same time, it can provide a mechanism for fault diagnosis and location to facilitate maintenance and processing;

(7) The airbag, airbag controller and motion detection module are all installed in the interlayer of the clothes, and are small in size and light in weight, and will not affect the comfort of the clothes;

In summary, the present invention can effectively protect several key positions of the human body, such as the back of the head, neck, shoulders, elbows, wrists and waist, and has very high reliability.

Description of drawings

Fig. 1 is a circuit structure diagram of the present invention;

Fig. 2 is one of the schematic diagrams of the position of the airbag on the clothes in the present invention;

Fig. 3 is the second schematic diagram of the position of the airbag on the clothes in the present invention;

Fig. 4 is a schematic diagram of human body movement coordinates in the present invention.

detailed description

The present invention will be further described below in conjunction with accompanying drawing:

The clothes for preventing people from falling as shown in Figures 1 to 3 include a clothes body on which a collar and sleeves are arranged. The collar is provided with an air bag 8 for protecting the back of the head, neck and shoulders of the personnel. Airbags 8 are respectively provided at the positions where the sleeves correspond to the elbows and wrists of the human body to protect the elbows and wrists of the personnel. An airbag 8 is provided at the waist position of the clothing body corresponding to the human body for protecting the waist of the personnel. The design of the air bag 8 installed on the neck is larger, and the air bag 8 bounces upwards during work to mainly protect the back of the head. In order to ensure that the human body can be protected from falling from all directions, the air bag 8 at the waist surrounds the entire waist of the human body, and the air bag 8 pops up downward when it works. The design of the air bag 8 installed on the elbow and wrist is smaller, and the air bag 8 of the wrist and elbow is small and light. The design thickness and width of each airbag 8 can be customized according to the build and body weight of the user, and after the airbag 8 is opened, the airbag 8 can also be replaced and continued to use.

An airbag controller is arranged on the back of the clothing body, and the airbag controller includes a controller 4 , an AD converter 2 , a power supply module 6 , a trigger module 5 and a gas generator 7 . The power supply adopts a rechargeable lithium battery, and provides power for each module through the power supply module 6 to ensure the normal operation of the system. The electric control part is easily damaged, and the gas generator has a certain weight, so these parts are installed on the back of the clothes to avoid damage to the electric control part due to extrusion and friction, and at the same time reduce the impact of weight on the comfort of the clothes .

The clothing body is equipped with a motion detection module at the chest position corresponding to the human body, which is used to detect three-dimensional acceleration and relative rotation angle.

The motion detection module includes a three-axis acceleration sensor 1 and a two-axis gyroscope 3, the three-axis acceleration sensor 1 and the two-axis gyroscope 3 are respectively connected to the AD converter 2, the AD converter 2 is connected to the controller 4, and the controller 4 is connected to the trigger The module 5 is connected, the trigger module 5 is connected with the gas generator 7, the gas generator 7 is connected with each air bag 8 through the pipeline, and the power module 6 is connected with the controller 4, the trigger module 5, and the gas generator 7 respectively. In order to simplify and prevent interference between modules, the data connection between modules is in the form of wired connection.

The three-axis acceleration sensor 1 outputs the acceleration values on the x, y, and z axes, the two-axis gyroscope 3 outputs the angular rate of the human body rotation angle, and the AD converter 2 converts the acceleration values and angular rates of each axis into digital signals and sends them to the controller 4, the controller 4 calculates the acceleration intensity value a and the inclination angle value θ based on the digital signal, and compares the acceleration intensity value a with the preset acceleration intensity threshold value a _max , and simultaneously compares the inclination angle value θ Compared with the preset inclination angle threshold θ _max , when a > a _max and θ > θ _max , it is considered that the person will fall, and the controller 4 activates the trigger module 5 to make the gas generator 7 inflate the airbag 8, and Open the airbag 8 just before the person falls; otherwise, it is considered that the person will not fall, the controller 4 does not start the gas generator 7, and performs a real-time self-check. Real-time self-inspection means that when a<a _max, θ<θ max, or a<a _{max, θ>θ max, or a>a max, θ<θ max , the elderly} are judged to be in normal physical activity, and then automatically re-test . Therefore, the present invention can avoid the interference of various normal activities of the human body such as squatting, bending over, jumping, etc., and prevent the airbag from deploying during normal activities of the human body. When the system is started, the system needs to perform a power-on self-test. The power-on self-test means that the system automatically sets a<a _max and θ<θ _max when the system is powered on.

The gas generator 7 adopts a hybrid gas generator, and its gas-generating agents are mainly ammonium nitrate, strontium nitrate and guanidine nitrate, using a small amount of manganese dioxide as a catalyst and PVA17-88 as a binder. When the gas generator 7 starts to work, it can generate enough gas to fill the airbag 8 in a very short time, and the whole process can guarantee the safety of people.

Before a person falls, there will be some warnings, such as discontinuous walking, poor sense of balance, shortened stride, inability to lift the feet to a suitable height, etc. These behaviors make it difficult for the person to control the fall of the body. It occurs quickly, and it takes a shorter time and more violently than normal human body movements (such as squatting). As the body instantly falls in a certain direction, the center of gravity of the body will also move in the direction of inclination instantly, and the changes in pitch angle and acceleration are most obvious during the fall process. We use the three-axis acceleration and gyroscope to monitor the changes of acceleration and angle values during the human body movement, model the state of the person's fall, and use the measured parameters to analyze the person's body posture to detect the fall in time. Symptoms and differentiated from daily activities. As shown in Figure 4, the present invention takes the installation position of the motion detection module as the coordinate origin, the front of the human body as the x-axis, the side of the human body to the right hand as the y-axis, and the vertical upward direction as the z-axis, wherein the acceleration intensity value a and the calculation formula of the tilt angle value θ is as follows:

Where a ₁ is the acceleration value on the x-axis, a ₂ is the acceleration value on the y-axis, and a ₃ is the acceleration value on the z-axis direction;

Wherein: g=9.8Nm/s ² .

As shown in Figure 1, the airbag controller also includes a photoelectric coupling module 9 connected to the controller 4. When a>a _max and θ>θ _max , if the trigger module 5 is not activated, the photoelectric coupling module 9 will The magnesium light generator directly realizes the triggering of the gas generator 7 and helps the airbag 8 to deploy in time and accurately. At the same time, the photocoupling module 9 can realize function expansion, wireless data writing and reading, and the like.

As shown in Figure 1, the airbag controller also includes an early warning diagnostic module 10 connected to the controller 4, which is used to monitor the operating status of the airbag controller and the motion detection module, and when a fault occurs, the fault is diagnosed and debugged and issued Alarm, while providing a mechanism for fault diagnosis and location, which facilitates maintenance and handling. For example: when the controller 4 does not receive any of the acceleration values and angular rates collected by the motion detection module, the controller 4 sends an e1 signal; when the power-on self-test cannot be set a<a _max , θ<θ When _max , the controller 4 sends the e2 signal; when a>a _max , θ>θ _max , if the trigger module 5 is not started, the controller 4 sends the e3 signal; when a<a _max and θ<θ _max , or a< When a _max and θ>θ _max , or a>a _max and θ<θ _max , if there is no automatic re-detection, the controller 4 sends a signal e4.

In the clothes for preventing people from falling of the present invention, the airbag 8, the airbag controller and the motion detection module are all installed in the interlayer of the clothes, so the comfort of the clothes will not be affected.

In a method for preventing people from falling of the present invention, the user wears the clothes for preventing people from falling according to the present invention, as shown in Figure 4, with the installation position of the motion detection module as the origin of coordinates and the forward direction of the human body is the x-axis, the right-hand side of the human body is the y-axis, and the vertical upward direction is the z-axis, including the following steps:

Step 1, the three-axis acceleration sensor 1 outputs the acceleration values on the x, y, and z axes, the biaxial gyroscope 3 outputs the angular rate of the human body rotation angle, and the AD converter 2 converts the acceleration values of each axis and the angular rate It is a digital signal and sent to the controller 4;

Step 2, the controller 4 receives the digital signal and calculates the acceleration intensity value a and the inclination angle value θ, and compares the acceleration intensity value a with the preset acceleration intensity threshold value a _max , and simultaneously compares the inclination angle value θ is compared with the preset inclination angle threshold θ _max , when a > a _max and θ > θ _max , it is considered that the person will fall, and the controller 4 activates the trigger module 5 to make the gas generator 7 inflate the airbag 8, And open the airbag 8 just before the person falls; otherwise, it is considered that the person will not fall, the controller 4 does not start the gas generator 7, and enters step 1;

The calculation formulas of the acceleration intensity value a and the inclination angle value θ are as follows:

Where: a ₁ is the acceleration value on the x-axis, a ₂ is the acceleration value on the y-axis, and a ₃ is the acceleration value on the z-axis direction;

Wherein: g=9.8Nm/s ² .

In the step 1, the early warning diagnosis module 10 monitors the running status of the motion detection module in real time, and when a fault occurs, it diagnoses and debugs the fault and issues an alarm, and provides a mechanism for fault diagnosis and location.

In the step 2, the early warning diagnosis module 10 monitors the operating status of the airbag controller in real time, and when the airbag controller fails, it diagnoses and debugs the failure and issues an alarm, while providing a mechanism for fault diagnosis and location. When a>a _max and θ>θ _max , if the trigger module 5 is not activated, the photoelectric coupling module 9 activates the gas generator 7 to inflate the airbag 8 .

Claims (3)

1. A kind of clothing that prevents people from falling, comprising a clothing body, on which a collar and sleeves are provided, characterized in that: at the waist position where the clothing body corresponds to the human body, the sleeves correspond to the elbow and wrist of the human body Airbags (8) are respectively provided at the position of the collar and at the collar; The back of the clothes body is provided with an airbag controller, which includes a controller (4), an AD converter (2), a power supply module (6), a trigger module (5) and a gas generator (7), The clothing body is provided with a motion detection module at the chest position corresponding to the human body, which is used to detect three-dimensional acceleration and relative rotation angle; The motion detection module includes a triaxial acceleration sensor (1) and a biaxial gyroscope (3), and the triaxial acceleration sensor (1) and the biaxial gyroscope (3) are respectively connected with the AD converter (2), and the AD converter (2) be connected with the controller (4), the controller (4) is connected with the trigger module (5), the trigger module (5) is connected with the gas generator (7), and the gas generator (7) is connected with each air bag (8) ), the power supply module (6) is connected with the controller (4), the trigger module (5), and the gas generator (7) respectively; The three-axis acceleration sensor (1) outputs the acceleration values on the x, y, and z axes, the two-axis gyroscope (3) outputs the angular rate of the human body's rotation angle, and the AD converter (2) converts the acceleration values of each axis and The angular rate is converted into a digital signal and sent to the controller (4), the controller (4) calculates the acceleration intensity value a and the tilt angle value θ based on the digital signal, and compares the acceleration intensity value a with the preset acceleration intensity Threshold value a _max comparison, at the same time the described inclination angle value θ is compared with preset inclination angle threshold value θ _max , when a>a _max , and θ>θ _max , then think that people will fall, controller (4) Start the trigger module (5), so that the gas generator (7) inflates the airbag (8), and opens the airbag (8) just before the person falls; otherwise, it is considered that the person will not fall, and the controller (4) does not start gas generator (7); The calculation formulas of the acceleration intensity value a and the inclination angle value θ are as follows: Where: a ₁ is the acceleration value on the x-axis, a ₂ is the acceleration value on the y-axis, and a ₃ is the acceleration value on the z-axis direction; Among them: g=9.8Nm/s ² ; The airbag controller also includes a photoelectric coupling module (9) connected to the controller (4). When a>a _max , and θ>θ _max , if the trigger module (5) is not activated, the photoelectric coupling module (9) Start the gas generator (7) to inflate the air bag (8); The airbag controller also includes an early warning diagnostic module (10) connected to the controller (4), used to monitor the operating status of the airbag controller and the motion detection module, and when a fault occurs, the fault is diagnosed and debugged and issued Alarms, while providing a mechanism for fault diagnosis and location. 2. The clothes for preventing people from falling according to claim 1, characterized in that: the airbag (8), the airbag controller and the motion detection module are all installed in the interlayer of the clothes. 3. A method for preventing people from falling, characterized in that: the user wears the clothes preventing people from falling as claimed in claim 1 or 2, comprising the following steps: Step 1, the three-axis acceleration sensor (1) outputs the acceleration values on the x, y, and z axes, the biaxial gyroscope (3) outputs the angular rate of the human body's rotation angle, and the AD converter (2) converts the acceleration values of each axis The acceleration value and the angular rate are converted into digital signals and sent to the controller (4); Step 2, the controller (4) receives the digital signal and calculates the acceleration intensity value a and the inclination angle value θ, and compares the acceleration intensity value a with the preset acceleration intensity threshold value a _max , and compares the inclination angle value a max at the same time. The angle value θ is compared with the preset inclination angle threshold θ _max . When a>a _max and θ>θ _max , it is considered that the person will fall, and the controller (4) starts the trigger module (5) to make the gas generator (7) Inflate the airbag (8), and open the airbag (8) just before the person falls; otherwise, it is considered that the person will not fall, the controller (4) does not start the gas generator (7), and enters step 1 ; The calculation formulas of the acceleration intensity value a and the inclination angle value θ are as follows: Where: a ₁ is the acceleration value on the x-axis, a ₂ is the acceleration value on the y-axis, and a ₃ is the acceleration value on the z-axis direction; Among them: g=9.8Nm/s ² ; In the step 1, the early warning diagnosis module (10) monitors the operating status of the motion detection module in real time, and when a fault occurs, it diagnoses and debugs the fault and sends an alarm, and provides a mechanism for fault diagnosis and location; In the step 2, the early warning diagnosis module (10) monitors the operating state of the airbag controller in real time, and when the airbag controller breaks down, it diagnoses and debugs the failure and sends an alarm, and simultaneously provides a mechanism for fault diagnosis and location; In the step 2, when a>a _max and θ>θ _max , if the trigger module (5) is not activated, the photoelectric coupling module (9) activates the gas generator to inflate the airbag (8).