CN111638059A - Air bag action time measuring device - Google Patents

Abstract

The invention provides an airbag action time measuring device for accurately measuring the airbag action time. The airbag action time measuring device includes: a flashing module, connected to the current output end of the airbag ignition system, for flashing when receiving the current pulse output by the airbag ignition system; the flashing moment of the flashing module is is the explosion moment of the airbag; a high-speed camera is arranged near the airbag, and is used to take pictures of the airbag and the flash module during the period from the start of the airbag explosion to the completion of the action. The airbag action time measuring device can accurately measure the airbag action time, and has important guiding significance for the evaluation and improvement of the airbag performance. The airbag action time measuring device also has the advantages of simplicity and convenience.

Description

An airbag action time measuring device

technical field

The invention belongs to the field of time interval measurement, and relates to an action time measurement device, in particular to an airbag action time measurement device.

Background technique

Airbags can effectively protect the safety of occupants and have saved many lives since their inception. The working process of the single-stage airbag is as follows:

In the process of driving the car, the sensor will continuously transmit information to the airbag control system. The control system judges whether to deploy the airbag through the obtained speed, acceleration and other information. Once a collision occurs and the conditions are met, the airbag deployment system will A current pulse is sent out as an ignition signal, which is used to inflate the airbag.

After the airbag receives the current pulse, due to the different energy absorption effects of different models of cars, a delay time will be set for the explosion of the airbag. This is to ensure that the airbag is deployed to the maximum range and optimal position to cushion the passengers, which usually requires precise to the millisecond level.

After the delay, the airbag begins to inflate and expand. First, the cover of the airbag must be broken. The time from the current pulse given by the airbag ignition system to the time when the airbag of the airbag breaks through the cover is called the airbag opening time, and the size of the airbag opening time is directly determined. Airbag safety.

After the airbag breaks through the cover, it will continue to inflate and deploy until the airbag is full. The filling time refers to the time from when the airbag is fully charged until the airbag is fully filled, so as to protect the safety of the occupants. The full filling refers to the state of the air bag when the maximum air bag outer diameter is reached.

During or after the airbag is inflated, the airbag contacts the occupant to provide protection for the occupant. After the air bag has been deployed and has actually been in contact with the occupant for a period of time, the vent hole of the air bag will automatically open to release the gas in the air bag and shrink the air bag. The time from when the airbag starts to contact the passenger to when the airbag starts to deflate is called the contact time, which is generally 60-100 milliseconds.

When the gas in the air bag is completely released, the air bag will deflate. The time between the beginning of deflation of the balloon and the completion of full deflation is called the deflation time.

In addition to single-stage airbags, common airbags are 2-stage airbags. Level 2 airbags are usually called 2-stage unconventional airbags. The airbag controls and adjusts the airbag deployment speed and inflation time according to the collision time, collision speed, and collision intensity. The strength is not violent, and the first-level airbag explodes, that is, the airbag is only inflated to about 70%; when a stronger collision occurs, the second-level airbag will be fully opened, thus avoiding the damage of the airbag to the human body, especially for children. s damage. For the 2-level airbag, there should be 2 filling times, the first-level filling time and the second-level filling time.

In addition, for the 3-level airbag, the principle and deployment process are similar to the above-mentioned 2-level airbag, except that the inflation of the airbag is divided into 3 stages, and the corresponding filling time is also 3, namely the first-level filling time, the second-level filling time and the third-level filling time. Level is full of time. For the 4-level airbag, its principle and deployment process are similar to the above-mentioned 2-level airbag, except that the inflation of the airbag is divided into 4 stages, and there are 4 corresponding filling times, namely the first-level filling time, the second-level filling time, and the third-level filling time. Full Time and Level Four Full Time.

It can be seen from the above introduction that the airbag will undergo a series of actions from the point of explosion, including but not limited to the airbag breaking through the cover, the airbag being filled to the maximum outer diameter of the airbag, the airbag starting to contact the passenger, the airbag beginning to deflate, the airbag fully shrunk. Accurately measuring the time from the point of airbag deployment to the completion of any of the above actions is of great significance for the improvement of the safety performance of the airbag. However, since the process of the airbag from the point of explosion to the deployment to the contraction is completed in a very short time, which belongs to the action of milliseconds, and the existence of the delay time makes it difficult for many time measuring devices to determine the time of the airbag's explosion, so it is difficult to Accurate measurement of airbag action time.

SUMMARY OF THE INVENTION

In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an airbag action time measuring device, which is used to solve the problem that the airbag explosion time cannot be determined due to the existence of delay time in the prior art, and thus it is difficult to accurately measure the airbag action time. The problem.

In order to achieve the above object and other related objects, the present invention provides an airbag action time measuring device, characterized in that, the airbag action time measuring device comprises: a flash module, connected to the current output end of the airbag ignition system, and used for When receiving the current pulse output by the airbag ignition system, a flashing light is emitted; the flashing time of the flashing module is the ignition time of the airbag; the high-speed camera is arranged near the airbag and is used to start the airbag when the airbag starts. Photographs of the airbag and the flash module are taken during the period from burst to completion of the action.

In an embodiment of the present invention, the flash module includes: a switch unit, connected to the current output end of the airbag ignition system, for converting the current pulse into a switch value; a lighting unit, arranged on the Between the switch unit and a power supply, it is used for flashing light when triggered by the switch quantity.

In an embodiment of the present invention, the airbag action time measuring device further includes: a communication module, connected to the high-speed camera, for reporting the photo to a remote server; a remote server, connected to the communication module for communication , the remote server obtains the airbag action time by analyzing and processing the obtained photo.

In an embodiment of the present invention, the high-speed camera has a time stamp; the remote server learns the time when the airbag completes the action according to the time stamp on the photo when the airbag completes the action, and the flash module The time stamp on the photo at the moment of flashing tells the moment when the airbag explodes.

In an embodiment of the present invention, the remote server calculates the airbag operation time according to the total number of photos taken by the high-speed camera from the start point of the airbag to the completion of the operation and the frame rate of the high-speed camera.

In an embodiment of the present invention, the airbag is an automobile single-stage airbag, a 2-stage airbag, a 3-stage airbag, or a 4-stage airbag.

The present invention also provides an airbag action time measurement device, the airbag action time measurement device includes: a flash module, connected to the current output end of the airbag ignition system, for receiving the current pulse output by the airbag ignition system The flashing moment of the flash module is the moment of the explosion of the airbag; a high-speed camera is arranged near the airbag, and is used to photograph the airbag from the time when the airbag starts to explode to the completion of the action. and a photo of the flashing module; a processing module, connected to the high-speed camera, obtains the airbag action time by processing the photo.

In an embodiment of the present invention, the flash module includes: a switch unit, connected to the current output end of the airbag ignition system, for converting the current pulse into a switch value; a lighting unit, arranged on the Between the switch unit and a power supply, it is used for flashing light when triggered by the switch quantity.

In an embodiment of the present invention, the high-speed camera has a time stamp; the processing module learns the time when the airbag completes the action according to the time stamp on the photo when the airbag completes the action, and the flash module The time stamp on the photo at the moment of flashing tells the moment when the airbag explodes.

In an embodiment of the present invention, the processing module calculates the airbag action time according to the total number of photos taken by the high-speed camera from the start point of the airbag to the completion of the action and the frame rate of the high-speed camera.

The present invention also provides a method for measuring the action time of the airbag, the method for measuring the action time of the airbag includes: receiving a current pulse sent by an airbag ignition system; the current pulse is used to trigger the airbag deployment; A flash is emitted under the triggering of the current pulse; a high-speed camera located near the airbag is used to take pictures of the airbag and the flashing module during the period from the explosion of the airbag to the completion of the action; Describe the airbag operation time.

As described above, the airbag action time measuring device of the present invention can well solve the following problems:

Since the process of the airbag from the point of explosion to the deployment to the contraction is completed in a very short time, which belongs to the action of milliseconds, and the existence of the delay time makes it impossible for many time measuring devices to determine the time of the airbag's explosion, so it is difficult to accurately The airbag action time was measured. In view of this problem, the present invention connects a flash module to the current output terminal of the airbag ignition system, and emits a flash after the flash module receives the current pulse, thereby ensuring the synchronization of the flash flash and the current pulse, thereby ensuring all The airbag action time measuring device can accurately detect the time of the airbag explosion, effectively solving the problem that the time of the output pulse current of the airbag explosion system cannot be determined due to the delay time, thereby affecting the measurement accuracy of the airbag action time.

The measurement of the action time of the airbag usually needs to be accurate to the millisecond level, and the shape of the airbag is different and the effect is different. A timing device specially designed for the airbag is time-consuming and labor-intensive. The airbag action time measurement device of the present invention includes a flash module, a high-speed camera, a communication module and a remote server, or a flash module, a high-speed camera and a processing module, and can easily and conveniently measure the airbag action time, effectively solving the above-mentioned special design problem. The timing device used in the airbag is time-consuming and labor-intensive.

In conclusion, the airbag action time measuring device of the present invention can accurately measure the airbag action time, which has important guiding significance for the performance evaluation and improvement of the airbag. The airbag action time measuring device also has the advantages of simplicity and convenience.

Description of drawings

FIG. 1 is a schematic diagram showing the implementation structure and connection relationship of the airbag action time measuring device according to a specific embodiment of the present invention.

FIG. 2 is a schematic diagram showing the implementation structure and connection relationship of a flash module in a specific embodiment of the airbag action time measuring device according to the present invention.

FIG. 3 is a schematic diagram of the implementation structure of the airbag action time measuring device according to a specific embodiment of the present invention.

FIG. 4 is a schematic diagram showing the implementation structure and connection relationship of the airbag action time measuring device according to a specific embodiment of the present invention.

FIG. 5 is a schematic diagram of the implementation process of the method for measuring the action time of the airbag according to the present invention in a specific embodiment.

Component label description

100 Airbag Action Time Measuring Device

110 Flash Module

120 high-speed cameras

111 Switch unit

112 Lighting Unit

200 Airbag Action Time Measuring Device

210 Flash Module

220 high-speed camera

230 Communication Module

240 remote server

300 Airbag Action Time Measuring Device

310 Flash Module

320 high-speed camera

330 Processing Module

Steps S101～S104

Detailed ways

The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict.

It should be noted that the drawings provided in the following embodiments are only to illustrate the basic concept of the present invention in a schematic way, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation. For drawing, the type, quantity and proportion of each component can be arbitrarily changed during actual implementation, and the layout of components may also be more complicated.

The action of the airbag in the present invention refers to all the actions of the airbag from the time the airbag receives the current pulse to the time when the airbag is fully deflated, including but not limited to the airbag breaking through the cover, the airbag being filled to the maximum outer diameter of the airbag, the beginning of the airbag On contact with the passenger, the airbag begins to deflate, and the airbag fully deflates. The airbag action time refers to the time elapsed from the time the airbag receives the current pulse to the completion of any action. In addition, the airbag action time measuring device of the present invention can also be used to measure the time interval between any two actions of the airbag.

Since the airbag action time is in milliseconds, and due to the existence of delay time, it is difficult for many existing time measuring devices to accurately measure the airbag action time. In order to solve this problem, the present invention proposes an airbag action time measurement device, the airbag action time measurement device includes: a flash module, connected to the current output end of the airbag ignition system, for receiving the airbag ignition time The system emits a flash when the current pulse is output; the flashing moment of the flash module is the moment when the airbag explodes; the high-speed camera is arranged near the airbag, and is used to complete the action from the start of the airbag to the completion of the action. Photographs of the airbag and the flash module were taken during this period. The airbag action time measuring device of the present invention can accurately measure the airbag action time, and has the advantages of simplicity and convenience.

Please refer to FIG. 1 , which is a schematic diagram showing the implementation structure and connection relationship of the airbag action time measuring device according to an embodiment of the present invention. The airbag action time measuring device includes a flash module 110 and a high-speed camera 120 . The flash module 110 is connected to the current output end of the airbag ignition system, and the high-speed camera 120 is disposed near the airbag and the flash module 110 , and its position should be able to completely photograph the airbag and the flash module 110 .

The working process of the airbag action time measuring device is as follows:

First, the trigger mode of the high-speed camera 120 is set. Preferably, the trigger mode is a center mode or a start mode. The so-called start mode is to start shooting at the same time as the trigger input, and will continue to shoot until the storage capacity reaches the upper limit. The central mode is to record the content before and after the trigger signal is input. Generally, this mode is used in occasions where image acquisition is required before and after some important moments.

In the process of driving the car, the sensor will continuously transmit information to the airbag control system, and the control system judges whether to deploy the airbag through the obtained speed, acceleration and other information. Once a collision occurs and the conditions are met, the airbag deployment system will output a current pulse to deploy the airbag, and the current pulse will also be output to the flash module 110 of the airbag action time measuring device.

When the flashing module 110 receives the current pulse output from the airbag ignition system, it will emit a flash. Preferably, the flashing module 110 will turn off immediately after the flashing. At this time, the high-speed camera 120 responsible for recording will take a picture of the flash module 110 and the airbag at present. Due to the high-speed conductivity of electrical signals, the time from when the airbag ignition system starts outputting current pulses to when the flash lamp is lit can be ignored. Therefore, the flashing moment of the flashing module 110 is the ignition moment of the airbag.

The airbag then experiences a delay time and then begins to inflate until it breaches the airbag cover. The time from when the air bag receives the current pulse to when the air bag of the air bag breaks through the cover is called the air bag opening time.

After the airbag breaks through the cover, it will continue to inflate and expand. For a single-stage airbag, the deployment process will continue until the entire airbag is full. In particular, the bladder is considered to be fully filled when the bladder continues to inflate to the maximum outer diameter of the bladder. The time from when the airbag receives the current pulse to when it is fully charged is called the full time.

During or after the airbag is inflated, the airbag will come into contact with the passenger to provide protection for the passenger. When the airbag is in contact with the passenger for a period of time, the airbag vent will automatically open to release the gas in it. The time from when the airbag starts to contact the passenger to when the airbag starts to deflate is called the contact time.

When the gas in the air bag is completely released, the air bag will deflate. The time between the beginning of deflation of the balloon and the completion of full deflation is called the deflation time.

During this process, the high-speed camera 120 will continue to take pictures of the airbag. The airbag action time of any action can be obtained by analyzing and processing the photos.

In an embodiment of the present invention, the flash module includes: a switch unit, connected to the current output end of the airbag ignition system, for converting the current pulse into a switch value; a lighting unit, arranged on the Between the switch unit and a power supply, it is used for flashing light when triggered by the switch quantity.

Please refer to FIG. 2 , which shows a schematic diagram of an implementation structure and a connection relationship of the flash module described in this embodiment.

Specifically, after the switch unit 111 obtains the current pulse output by the airbag ignition system, it will convert the current pulse into a passive switch quantity through the optocoupler system and output it to the lighting unit 112 . The light unit 112 is connected to a power source, and after receiving the switch value, a circuit will be formed inside and a flash will be emitted, and then the flash will be extinguished.

In an embodiment of the present invention, the airbag action time measurement device includes: a flash module, a high-speed camera, a communication module, and a remote server. Wherein, the communication module is connected with the high-speed camera, and is used for reporting the photo to the remote server; the remote server is connected in communication with the communication module, and the obtained photo is obtained by analyzing and processing the obtained photo. Airbag action time.

Please refer to FIG. 3 , which is a schematic structural diagram of the airbag action time measuring device according to the present embodiment. After the high-speed camera 220 finishes taking the photo, the communication module 230 reports the photo to the remote server 240 through wireless communication, and the remote server 240 can analyze and process the obtained photo to obtain the photo. Airbag action time.

In an embodiment of the present invention, the high-speed camera has a time stamp; the remote server learns the time when the airbag completes the action according to the time stamp on the photo when the airbag completes any one of the actions, and according to the flashing light The time stamp on the photo of the flashing time of the module is used to know the explosion time of the airbag. Specifically, the airbag action time can be obtained by subtracting the time of the airbag when the airbag completes the action.

In an embodiment of the present invention, the remote server calculates the airbag operation time according to the total number of photos taken by the high-speed camera from the start point of the airbag to the completion of the operation and the frame rate of the high-speed camera. Specifically, the airbag action time can be obtained by dividing the total number of photos by the frame rate. Among them, the frame rate refers to the number of photos taken by the high-speed camera in one second, and the unit is fps (frames per second).

In an embodiment of the present invention, the airbag is an automobile single-stage airbag, a 2-stage airbag, a 3-stage airbag, or a 4-stage airbag. The deployment process of the single-stage airbag of the automobile is completed at one time; the level 2 airbag can be deployed according to the collision situation; In the event of a collision, choose a level 1 airbag or a level 2 airbag or a level 3 airbag or a level 4 airbag to deploy.

The present invention also provides an airbag action time measurement device, characterized in that the airbag action time measurement device comprises: a flash module, connected to the current output end of the airbag ignition system, for receiving the airbag ignition system The flashing time of the output current pulse is emitted; the flashing time of the flashing module is the explosion time of the airbag; the high-speed camera is arranged near the airbag, and is used for the period from the start of explosion of the airbag to the completion of the action. Taking pictures of the airbag and the flashing module; a processing module, connected to the high-speed camera, and obtaining the airbag action time by processing the photos. Please refer to FIG. 4 , which shows a schematic diagram of the implementation structure and connection relationship of the airbag action time measuring device according to the present embodiment, wherein the airbag action time measuring device includes a flash module 310 , a high-speed camera 320 and a processing module 330 .

The working process of the airbag action time measuring device is as follows:

First, the trigger mode of the high-speed camera 320 is set. Preferably, the trigger mode is a center mode or a start mode. The so-called start mode is to start shooting at the same time as the trigger input, and will continue to shoot until the storage capacity reaches the upper limit. The central mode is to record the content before and after the trigger signal is input. Generally, this mode is used in occasions where image acquisition is required before and after some important moments.

In the process of driving the car, the sensor will continuously transmit information to the airbag control system, and the control system judges whether to deploy the airbag through the obtained speed, acceleration and other information. Once a collision occurs and the conditions are met, the airbag deployment system will output a current pulse to inflate the airbag, and the current pulse will also be output to the flash module 310 of the airbag action time measuring device.

When the flashing module 310 receives the current pulse output by the airbag ignition system, it will emit a flash. Preferably, the flashing module 310 will turn off immediately after the flashing. At this time, the high-speed camera 320 responsible for recording will take a picture of the flash module 310 and the airbag at present. Due to the high-speed conductivity of the electrical signal, the time from when the airbag ignition system starts outputting the current pulse to when the flasher lights up is negligible. Therefore, the flashing moment of the flashing module 310 is the ignition moment of the airbag.

The airbag then experiences a delay time and then begins to inflate until it breaches the airbag cover. The time from when the air bag receives the current pulse to when the air bag of the air bag breaks through the cover is called the air bag opening time.

After the airbag breaks through the cover, it will continue to inflate and expand. For a single-stage airbag, the deployment process will continue until the entire airbag is full. In particular, the bladder is considered to be fully filled when the bladder continues to inflate to the maximum outer diameter of the bladder. The time from when the airbag receives the current pulse to when it is fully charged is called the full time.

During or after the airbag is inflated, the airbag will come into contact with the passenger to provide protection for the passenger. When the airbag is in contact with the passenger for a period of time, the airbag vent will automatically open to release the gas in it. The time from when the airbag starts to contact the passenger to when the airbag starts to deflate is called the contact time.

When the gas in the air bag is completely released, the air bag will deflate. The time between the beginning of deflation of the balloon and the completion of full deflation is called the deflation time.

During this process, the high-speed camera 320 will continue to take pictures of the airbag. After the action of the airbag is completed, the processing module 330 obtains the action time of the airbag by processing and analyzing the photos taken by the high-speed camera 320 .

In an embodiment of the present invention, the flash module includes: a switch unit, connected to the current output end of the airbag ignition system, for converting the current pulse into a switch value; a lighting unit, arranged on the Between the switch unit and a power supply, it is used for flashing light when triggered by the switch quantity.

In an embodiment of the present invention, the high-speed camera has a time stamp; the processing module obtains the time when the airbag completes the action according to the time stamp on the photo when the airbag completes any one of the actions, and according to the flashing light The time stamp on the photo of the flashing time of the module is used to know the explosion time of the airbag. Specifically, the airbag action time can be obtained by subtracting the time of the airbag when the airbag completes the action.

In an embodiment of the present invention, the processing module calculates the airbag action time according to the total number of photos taken by the high-speed camera from the start point of the airbag to the completion of the action and the frame rate of the high-speed camera. Specifically, the airbag action time can be obtained by dividing the total number of photos by the frame rate. Among them, the frame rate refers to the number of photos taken by the high-speed camera in one second, and the unit is fps (frames per second).

The present invention also provides a method for measuring the action time of the airbag, the method for measuring the action time of the airbag includes: receiving a current pulse sent by an airbag ignition system; the current pulse is used to trigger the airbag deployment; Under the triggering of the current pulse, a flash is emitted; a high-speed camera located near the airbag is used to take pictures of the airbag and the flashing module during the period from the explosion of the airbag to the completion of the action; the photo is processed to obtain the Airbag action time.

Please refer to FIG. 5, which shows the method for measuring the airbag action time according to the present invention, which specifically includes:

S101, receiving a current pulse sent by an airbag ignition system; the current pulse is used to trigger the airbag deployment. During the driving process of the car, the sensor will continuously transmit information to the airbag control system, and the control system judges whether to deploy the airbag through the obtained speed, acceleration and other information. Once a collision occurs and the conditions are met, the airbag ignition system will output a current pulse, which is used to trigger the airbag to deploy.

S102, using a flash module to emit flash under the trigger of the current pulse. When the airbag ignition system outputs the current pulse, the flash module also receives the current pulse, and converts it into a switch quantity to control the internal lighting unit to emit flash. Due to the high-speed conductivity of the electrical signal, the time from when the airbag ignition system starts outputting the current pulse to when the flasher lights up can be neglected, so the flashing moment is the ignition moment of the airbag.

S103, using a high-speed camera located near the airbag to take pictures of the airbag and the flash module during the period from when the airbag starts to explode to when the action is completed. Preferably, the high-speed camera is triggered in a central mode or a start mode. Preferably, the high-speed camera continuously takes pictures of the airbag and flash module.

S104, analyzing and processing the photo to obtain the airbag action time. An implementation manner of the analysis and processing is: using the time stamp on the photo to obtain the explosion time of the airbag and the completion time of the action, and subtracting the explosion time of the airbag from the completion time of the action to obtain the result. The airbag action time; another implementation method of the analysis and processing is: to obtain the total number of photos taken by the high-speed camera from the start point of the airbag to the completion of the action, and divide the total number of photos by the frame of the high-speed camera. rate to obtain the airbag action time.

The airbag action time measuring device proposed by the present invention can effectively solve the problem of inability to determine the timing of the output pulse current of the airbag ignition system caused by the delay time, thereby affecting the measurement accuracy of the airbag action time. The airbag action time measuring device can accurately measure the action time of the airbag, and also has the advantages of simplicity and convenience.

The above-mentioned embodiments merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present invention should still be covered by the claims of the present invention.

Claims (11)

1. An airbag operation time measuring apparatus for measuring an airbag operation time, comprising:

the flashing module is connected with the current output end of the air bag detonation system and is used for emitting flashing light when receiving current pulses output by the air bag detonation system; the flashing time of the flashing module is the explosion time of the air bag;

and the high-speed camera is arranged near the air bag and is used for taking pictures of the air bag and the flash module during the period from the starting point of the air bag to the completion of the action.

2. The airbag actuation time measuring device of claim 1, wherein the flashing module comprises:

the switching unit is connected with the current output end of the air bag explosion system and used for converting the current pulse into switching value;

and the light unit is arranged between the switch unit and a power supply and is used for emitting flash under the triggering of the switching value.

3. The air bag actuation time measuring device according to claim 1, further comprising:

the communication module is connected with the high-speed camera and used for reporting the photo to a remote server;

and the remote server is in communication connection with the communication module and obtains the air bag action time by analyzing and processing the obtained picture.

4. An air bag actuation time measuring device according to claim 3, characterized in that: the high speed camera has a timestamp; and the remote server acquires the moment when the airbag finishes the action according to the timestamp on the photo when the airbag finishes the action, and acquires the explosion moment of the airbag according to the timestamp on the photo when the flash module flashes.

5. An air bag actuation time measuring device according to claim 3, characterized in that: and the remote server calculates the air bag action time according to the total number of pictures shot by the high-speed camera during the period from the starting point of the air bag to the completion of the action and the frame rate of the high-speed camera.

6. The air bag actuation time measuring device according to claim 1, characterized in that: the air bag is a single-stage air bag, a 2-stage air bag, a 3-stage air bag or a 4-stage air bag of an automobile.

7. An air bag actuation time measuring device, characterized by comprising:

the flashing module is connected with the current output end of the air bag detonation system and is used for emitting flashing light when receiving current pulses output by the air bag detonation system; the flashing time of the flashing module is the explosion time of the air bag;

the high-speed camera is arranged near the air bag and is used for taking pictures of the air bag and the flash module during the period from the starting point of the air bag to the completion of the action;

and the processing module is connected with the high-speed camera and is used for processing the pictures to obtain the air bag action time.

8. The airbag actuation time measuring device of claim 7, wherein the flashing module comprises:

the switching unit is connected with the current output end of the air bag explosion system and used for converting the current pulse into switching value;

and the light unit is arranged between the switch unit and a power supply and is used for emitting flash under the triggering of the switching value.

9. An air bag actuation time measuring device according to claim 7, characterized in that: the high speed camera has a timestamp; the processing module obtains the time when the air bag finishes the action according to the time stamp on the photo when the air bag finishes the action, and obtains the explosion moment of the air bag according to the time stamp on the photo when the flashing module flashes.

10. An air bag actuation time measuring device according to claim 7, characterized in that: and the processing module calculates the air bag action time according to the total number of pictures shot by the high-speed camera during the period from the starting point of the air bag to the completion of the action and the frame rate of the high-speed camera.

11. A method of measuring an air bag actuation time, the method comprising:

receiving current pulses sent by an airbag detonation system; the current pulse is used for triggering the airbag to be unfolded;

a flash module is used for emitting flash under the trigger of the current pulse;

utilizing a high-speed camera positioned near the air bag to take pictures of the air bag and the flashing module during the period from the starting point of the air bag to the completion of the action;

and analyzing and processing the picture to obtain the air bag action time.

Images