CN105509672A - Dummy chest bottoming-out judgment method and device in vehicle collision experiment - Google Patents
Dummy chest bottoming-out judgment method and device in vehicle collision experiment Download PDFInfo
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- CN105509672A CN105509672A CN201510885813.8A CN201510885813A CN105509672A CN 105509672 A CN105509672 A CN 105509672A CN 201510885813 A CN201510885813 A CN 201510885813A CN 105509672 A CN105509672 A CN 105509672A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0078—Shock-testing of vehicles
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Abstract
The invention provides a dummy chest bottoming-out judgment method and a device in the vehicle collision experiment. The method comprises the steps of acquiring the acceleration of a vehicle B-pillar at the collision moment in a vehicle collision experiment; acquiring the acceleration of a dummy arranged at a driver side at the collision moment in the vehicle collision experiment; acquiring the chest compression displacement of the dummy arranged at the driver side at the collision moment in the vehicle collision experiment; calculating the relative movement speed of the dummy relative to a vehicle based on the acceleration of the vehicle B-pillar and the acceleration of the dummy; calculating the chest compression speed of the dummy according to the chest compression displacement of the dummy in the vehicle collision experiment; and judging the bottoming-out condition of the dummy chest according to the relative movement speed and the chest compression speed. According to the invention, based on the dummy chest bottoming-out judgment method and the device in the vehicle collision experiment, whether the dummy chest on the driver side is bottomed out or not in the vehicle collision experiment can be effectively judged. Therefore, the method and the device provide the vehicle safety engineering and technical personnel a basis for the analysis and the judgment of the test.
Description
Technical field
The present invention relates to automotive safety engineering field, particularly a kind of vehicle collision experiment dummy breast touches end determination methods and device.
Background technology
In the traffic hazard of head-on crash, driver's chest is the passenger protection of the position easily damaged, standard GB/T 1155-2014 frontal crash of vehicles, using the injury values of dummy breast as important evaluation content.When there is head-on crash, bearing circle very easily damages dummy breast, so cushion the collision of driver and bearing circle in safety restraint system by securing band and air bag, if safety restraint system coupling is unreasonable, there will be the situation that driver's chest touches the end, make driver's chest and bearing circle generation rigid contact, thus cause chest to injure, harm driver life security.But from test video recording, what produce due to airbag deployment blocks, cannot judge that whether dummy breast there occurs with bearing circle and contact, for the analysis of experiments of engineering technical personnel brings difficulty.
Summary of the invention
The invention provides a kind of vehicle collision experiment dummy breast and touch end determination methods and device, its objective is, in order to solve driver's chest when automobile collides, whether the problem at the tactile end occurs.
In order to achieve the above object, The embodiment provides a kind of vehicle collision experiment dummy breast and touch end determination methods, described method comprises:
Obtain automobile B-column to collide at collision experiment the acceleration in moment;
Obtain the dummy of driver side to collide at collision experiment the acceleration in moment;
Obtain the dummy of driver side to collide at collision experiment the breast compressions displacement in moment;
According to the acceleration of the automobile B-column got and the acceleration of dummy, calculate the speed of related movement of dummy relative to automobile;
According to the breast compressions displacement of the dummy got when collision experiment, calculate the breast compressions speed of dummy;
The situation of the tactile end of dummy breast position is judged according to described speed of related movement and described breast compressions speed.
Wherein, the acceleration of the automobile B-column that described basis gets and the acceleration of dummy, calculate dummy and comprise relative to the step of the speed of related movement of automobile:
By formula a
chest_vehicle (t)=a
chest (t)-a
vehicle (t), calculate the relative acceleration of dummy relative to automobile, wherein, a
chest_vehicle (t)represent the relative acceleration of t dummy relative to automobile, a
chest (t)represent that t dummy collides at collision experiment the acceleration in moment, a
vehicle (t)represent that t automobile B-column collides at collision experiment the acceleration in moment;
Pass through formula
calculate the speed of related movement of t dummy relative to automobile, wherein v
chest_vehicle (t)represent the speed of related movement of t dummy relative to automobile.
Wherein, the breast compressions displacement of the dummy that described basis gets when collision experiment, the step calculating the breast compressions speed of dummy comprises:
Pass through formula
calculate the breast compressions speed of dummy, wherein, V
chest (t)represent the breast compressions speed of t dummy, D
chest (t)represent the breast compressions displacement of t dummy.
Wherein, describedly judge that according to described speed of related movement and described breast compressions speed the step of the situation of the tactile end of driver side dummy comprises:
According to the speed of related movement of the dummy calculated relative to automobile, set up first curve of speed of related movement relative to time variations;
According to the breast compressions speed of the dummy calculated, set up second curve of breast compressions speed relative to time variations;
Analyze described first curve and described second curve, when described first curve occurs overlapping with described second curve, then determine that the tactile end occurs described driver side dummy; Otherwise, do not occur to touch the end.
Embodiments of the invention additionally provide a kind of vehicle collision experiment dummy breast and touch end judgment means, and described device comprises:
First acquisition module, to collide at collision experiment the acceleration in moment for obtaining automobile B-column;
Second acquisition module, the dummy for obtaining driver side to collide at collision experiment the acceleration in moment;
3rd acquisition module, the dummy for obtaining driver side to collide at collision experiment the breast compressions displacement in moment;
First computing module, for according to the acceleration of automobile B-column got and the acceleration of dummy, calculates the speed of related movement of dummy relative to automobile;
Second computing module, for according to the dummy that the gets breast compressions displacement when collision experiment, calculates the breast compressions speed of dummy;
Judge module, for judging the situation of the tactile end of dummy breast position according to described speed of related movement and described breast compressions speed.
Wherein, described first computing module comprises:
First computing unit, for passing through formula a
chest_vehicle (t)=a
chest (t)-a
vehicle (t), calculate the relative acceleration of dummy relative to automobile, wherein, a
chest_vehicle (t)represent the relative acceleration of t dummy relative to automobile, a
chest (t)represent that t dummy collides at collision experiment the acceleration in moment, a
vehicle (t)represent that t automobile B-column collides at collision experiment the acceleration in moment;
Second computing unit, for passing through formula
calculate the speed of related movement of t dummy relative to automobile, wherein v
chest_vehicle (t)represent the speed of related movement of t dummy relative to automobile.
Wherein, described second computing module comprises:
3rd computing unit, for passing through formula
calculate the breast compressions speed of dummy, wherein, V
chest (t)represent the breast compressions speed of t dummy, D
chest (t)represent the breast compressions displacement of t dummy.
Wherein, described device also comprises:
First sets up module, for according to the dummy that calculates relative to the speed of related movement of automobile, set up first curve of speed of related movement relative to time variations;
Second sets up module, for the breast compressions speed according to the dummy calculated, sets up second curve of breast compressions speed relative to time variations;
Analysis module, for analyzing described first curve and described second curve, when described first curve occurs overlapping with described second curve, then determines that the tactile end occurs described driver side dummy; Otherwise, do not occur to touch the end.
The beneficial effect of such scheme of the present invention is as follows:
Vehicle collision experiment dummy breast provided by the present invention touches end determination methods and device and to driver side dummy breast in test whether can occur the tactile end and make effective judgement; the problem of Timeliness coverage safety restraint system coupling; and solve in time; for the security performance of vehicle provides safeguard, thus the life security of protection user.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method for the invention;
Fig. 2 is the concrete operations process flow diagram of the method for the invention;
Fig. 3 is the coordinate axis figure of the first curve of the present invention and the second curve;
Fig. 4 is the structural representation of device of the present invention.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Whether the present invention is directed to existing needs in test touches to dummy breast the problem that the end judges, and provides a kind of vehicle collision experiment dummy breast and touches end determination methods and device.
As shown in Figure 1, The embodiment provides a kind of vehicle collision experiment dummy breast and touch end determination methods, described method comprises:
Step 1, obtains automobile B-column and to collide at collision experiment the acceleration in moment;
Step 2, obtains the dummy of driver side and to collide at collision experiment the acceleration in moment;
Step 3, obtains the dummy of driver side and to collide at collision experiment the breast compressions displacement in moment;
Step 4, according to the acceleration of the automobile B-column got and the acceleration of dummy, calculates the speed of related movement of dummy relative to automobile;
Step 5, according to the breast compressions displacement of the dummy got when collision experiment, calculates the breast compressions speed of dummy;
Step 6, judges the situation of the tactile end of dummy breast position according to described speed of related movement and described breast compressions speed.
Method described in the above embodiment of the present invention is specially the acceleration gathering automobile B-column in frontal crash of vehicles test, the acceleration of driver side dummy and breast compressions displacement, calculate the speed of related movement of dummy relative to automobile and the breast compressions speed of dummy according to the data got, judge the situation of the tactile end of dummy breast position with this.Vehicle collision experiment dummy breast described in the above embodiment of the present invention touches end determination methods and to driver side dummy breast in test whether can occur the tactile end and make effective judgement; the problem of Timeliness coverage safety restraint system coupling; and solve in time; for the security performance of vehicle provides safeguard, thus the life security of protection user.
Wherein, the acceleration of the automobile B-column that described basis gets and the acceleration of dummy, calculate dummy and comprise relative to the step of the speed of related movement of automobile:
By formula a
chest_vehicle (t)=a
chest (t)-a
vehicle (t), calculate the relative acceleration of dummy relative to automobile, wherein, a
chest_vehicle (t)represent the relative acceleration of t dummy relative to automobile, a
chest (t)represent that t dummy collides at collision experiment the acceleration in moment, a
vehicle (t)represent that t automobile B-column collides at collision experiment the acceleration in moment;
Pass through formula
calculate the speed of related movement of t dummy relative to automobile, wherein v
chest_vehicle (t)represent the speed of related movement of t dummy relative to automobile.
Wherein, the breast compressions displacement of the dummy that described basis gets when collision experiment, the step calculating the breast compressions speed of dummy comprises:
Pass through formula
calculate the breast compressions speed of dummy, wherein, V
chest (t)represent the breast compressions speed of t dummy, D
chest (t)represent the breast compressions displacement of t dummy.
Dummy described in the above embodiment of the present invention is obtained through integration from 0ms relative to the relative acceleration of automobile by described dummy relative to the speed of related movement of automobile, and breast compressions speed is obtained through differential from 0ms by dummy breast compression displacement amount.
As shown in Figures 2 and 3, describedly judge that according to described speed of related movement and described breast compressions speed the step of the situation of the tactile end of driver side dummy comprises:
Step 61, according to the speed of related movement of the dummy calculated relative to automobile, sets up first curve of speed of related movement relative to time variations;
Step 62, according to the breast compressions speed of the dummy calculated, sets up second curve of breast compressions speed relative to time variations;
Step 63, analyzes described first curve and described second curve, when described first curve occurs overlapping with described second curve, then determines that the tactile end occurs described driver side dummy; Otherwise, do not occur to touch the end.
The above embodiment of the present invention goes out the speed of related movement of dummy relative to automobile and the breast compressions speed of dummy by formulae discovery; clearly can know the data variation in each moment within a certain period of time; and explicitly in a coordinate system to show; engineering technical personnel are facilitated to judge the dummy breast whether tactile end in research and development demonstration test; the problem of Timeliness coverage safety restraint system coupling; and solve in time; for the security performance of vehicle provides safeguard, thus the life security of protection user.
As shown in Figure 4, embodiments of the invention additionally provide a kind of vehicle collision experiment dummy breast and touch end judgment means, and described device comprises: the first acquisition module, are arranged on automobile B-column, to collide the acceleration in moment for obtaining automobile B-column at collision experiment; Second acquisition module, is arranged on the dummy of driver side, and the dummy for obtaining driver side to collide at collision experiment the acceleration in moment; 3rd acquisition module, is arranged on the chest locations of driver side dummy, and the dummy for obtaining driver side to collide at collision experiment the breast compressions displacement in moment; First computing module, for according to the acceleration of automobile B-column got and the acceleration of dummy, calculates the speed of related movement of dummy relative to automobile; Second computing module, for according to the dummy that the gets breast compressions displacement when collision experiment, calculates the breast compressions speed of dummy; Judge module, for judging the situation of the tactile end of dummy breast position according to described speed of related movement and described breast compressions speed.
Wherein, described first computing module comprises:
First computing unit, for passing through formula a
chest_vehicle (t)=a
chest (t)-a
vehicle (t), calculate the relative acceleration of dummy relative to automobile, wherein, a
chest_vehicle (t)represent the relative acceleration of t dummy relative to automobile, a
chest (t)represent that t dummy collides at collision experiment the acceleration in moment, a
vehicle (t)represent that t automobile B-column collides at collision experiment the acceleration in moment;
Second computing unit, for passing through formula
calculate the speed of related movement of t dummy relative to automobile, wherein v
chest_vehicle (t)represent the speed of related movement of t dummy relative to automobile.
Wherein, described second computing module comprises:
3rd computing unit, for passing through formula
calculate the breast compressions speed of dummy, wherein, V
chest (t)represent the breast compressions speed of t dummy, D
chest (t)represent the breast compressions displacement of t dummy.
As shown in Figure 3 and Figure 4, described device also comprises: first sets up module, for according to the dummy that calculates relative to the speed of related movement of automobile, set up first curve of speed of related movement relative to time variations; Second sets up module, for the breast compressions speed according to the dummy calculated, sets up second curve of breast compressions speed relative to time variations; Analysis module, for analyzing described first curve and described second curve, when described first curve occurs overlapping with described second curve, then determines that the tactile end occurs described driver side dummy; Otherwise, do not occur to touch the end.
Vehicle collision experiment dummy breast described in the above embodiment of the present invention touches end determination methods and device by the acceleration to described automobile B-column, the acceleration of described driver side dummy and the collection of described breast compressions displacement, through the calculating of formula, draw corresponding curve in a coordinate system and carry out record, calculate described speed of related movement and described breast compressions speed, whether can there is the tactile end to driver side dummy breast in test and make effective judgement, the problem of Timeliness coverage safety restraint system coupling, and solve in time, for the security performance of vehicle provides safeguard, thus the life security of protection user.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. vehicle collision experiment dummy breast touches an end determination methods, it is characterized in that, described method comprises:
Obtain automobile B-column to collide at collision experiment the acceleration in moment;
Obtain the dummy of driver side to collide at collision experiment the acceleration in moment;
Obtain the dummy of driver side to collide at collision experiment the breast compressions displacement in moment;
According to the acceleration of the automobile B-column got and the acceleration of dummy, calculate the speed of related movement of dummy relative to automobile;
According to the breast compressions displacement of the dummy got when collision experiment, calculate the breast compressions speed of dummy;
The situation of the tactile end of dummy breast position is judged according to described speed of related movement and described breast compressions speed.
2. vehicle collision experiment dummy breast according to claim 1 touches end determination methods, it is characterized in that, the acceleration of the automobile B-column that described basis gets and the acceleration of dummy, calculates dummy and comprises relative to the step of the speed of related movement of automobile:
By formula a
chest_vehicle (t)=a
chest (t)-a
vehicle (t), calculate the relative acceleration of dummy relative to automobile, wherein, a
chest_vehicle (t)represent the relative acceleration of t dummy relative to automobile, a
chest (t)represent that t dummy collides at collision experiment the acceleration in moment, a
vehicle (t)represent that t automobile B-column collides at collision experiment the acceleration in moment;
Pass through formula
Calculate the speed of related movement of t dummy relative to automobile, wherein v
chest_vehicle (t)represent the speed of related movement of t dummy relative to automobile.
3. vehicle collision experiment dummy breast according to claim 1 touches end determination methods, it is characterized in that, the breast compressions displacement of the dummy that described basis gets when collision experiment, and the step calculating the breast compressions speed of dummy comprises:
Pass through formula
calculate the breast compressions speed of dummy, wherein, V
chest (t)represent the breast compressions speed of t dummy, D
chest (t)represent the breast compressions displacement of t dummy.
4. vehicle collision experiment dummy breast according to claim 1 touches end determination methods, it is characterized in that, describedly judges that according to described speed of related movement and described breast compressions speed the step of the situation of the tactile end of driver side dummy comprises:
According to the speed of related movement of the dummy calculated relative to automobile, set up first curve of speed of related movement relative to time variations;
According to the breast compressions speed of the dummy calculated, set up second curve of breast compressions speed relative to time variations;
Analyze described first curve and described second curve, when described first curve occurs overlapping with described second curve, then determine that the tactile end occurs described driver side dummy; Otherwise, do not occur to touch the end.
5. vehicle collision experiment dummy breast touches an end judgment means, it is characterized in that, described device comprises:
First acquisition module, to collide at collision experiment the acceleration in moment for obtaining automobile B-column;
Second acquisition module, the dummy for obtaining driver side to collide at collision experiment the acceleration in moment;
3rd acquisition module, the dummy for obtaining driver side to collide at collision experiment the breast compressions displacement in moment;
First computing module, for according to the acceleration of automobile B-column got and the acceleration of dummy, calculates the speed of related movement of dummy relative to automobile;
Second computing module, for according to the dummy that the gets breast compressions displacement when collision experiment, calculates the breast compressions speed of dummy;
Judge module, for judging the situation of the tactile end of dummy breast position according to described speed of related movement and described breast compressions speed.
6. vehicle collision experiment dummy breast according to claim 5 touches end judgment means, it is characterized in that, described first computing module comprises:
First computing unit, for passing through formula a
chest_vehicle (t)=a
chest (t)-a
vehicle (t), calculate the relative acceleration of dummy relative to automobile, wherein, a
chest_vehicle (t)represent the relative acceleration of t dummy relative to automobile, a
chest (t)represent that t dummy collides at collision experiment the acceleration in moment, a
vehicle (t)represent that t automobile B-column collides at collision experiment the acceleration in moment;
Second computing unit, for passing through formula
Calculate the speed of related movement of t dummy relative to automobile, wherein v
chest_vehicle (t)represent the speed of related movement of t dummy relative to automobile.
7. vehicle collision experiment dummy breast according to claim 5 touches end judgment means, it is characterized in that, described second computing module comprises:
3rd computing unit, for passing through formula
calculate the breast compressions speed of dummy, wherein, V
chest (t)represent the breast compressions speed of t dummy, D
chest (t)represent the breast compressions displacement of t dummy.
8. vehicle collision experiment dummy breast according to claim 5 touches end judgment means, it is characterized in that, described device also comprises:
First sets up module, for according to the dummy that calculates relative to the speed of related movement of automobile, set up first curve of speed of related movement relative to time variations;
Second sets up module, for the breast compressions speed according to the dummy calculated, sets up second curve of breast compressions speed relative to time variations;
Analysis module, for analyzing described first curve and described second curve, when described first curve occurs overlapping with described second curve, then determines that the tactile end occurs described driver side dummy; Otherwise, do not occur to touch the end.
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| CN201510885813.8A CN105509672B (en) | 2015-12-04 | 2015-12-04 | A kind of vehicle collision experiment dummy breast bottoms out determination methods and device |
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Cited By (7)
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| CN105737743A (en) * | 2016-05-05 | 2016-07-06 | 中国汽车技术研究中心 | Measurement method for dummy H point displacement in impact test based on photographed image analysis |
| CN107609318A (en) * | 2017-10-27 | 2018-01-19 | 天津瑷睿赛福科技有限公司 | A kind of frontal crash of vehicles dummy breast structure fast parameter design method |
| CN110658002A (en) * | 2019-11-20 | 2020-01-07 | 天津瑷睿赛福科技有限公司 | Dummy lumbar vertebra measuring tool for automobile crash test |
| CN111121682A (en) * | 2019-11-21 | 2020-05-08 | 中汽研汽车检验中心（天津）有限公司 | Dummy positioning device and method for trolley |
| CN112461549A (en) * | 2020-10-28 | 2021-03-09 | 中汽研汽车检验中心（天津）有限公司 | HIII dummy chest displacement correction method based on combined constraint system |
| CN114910094A (en) * | 2022-07-15 | 2022-08-16 | 中汽研汽车检验中心（天津）有限公司 | Method, device and storage medium for determining false head offset in automobile crash test |
| CN115575141A (en) * | 2022-12-09 | 2023-01-06 | 中国汽车技术研究中心有限公司 | Method and equipment for calibrating chest of automobile crash dummy |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737743A (en) * | 2016-05-05 | 2016-07-06 | 中国汽车技术研究中心 | Measurement method for dummy H point displacement in impact test based on photographed image analysis |
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| CN107609318A (en) * | 2017-10-27 | 2018-01-19 | 天津瑷睿赛福科技有限公司 | A kind of frontal crash of vehicles dummy breast structure fast parameter design method |
| CN110658002A (en) * | 2019-11-20 | 2020-01-07 | 天津瑷睿赛福科技有限公司 | Dummy lumbar vertebra measuring tool for automobile crash test |
| CN111121682A (en) * | 2019-11-21 | 2020-05-08 | 中汽研汽车检验中心（天津）有限公司 | Dummy positioning device and method for trolley |
| CN112461549A (en) * | 2020-10-28 | 2021-03-09 | 中汽研汽车检验中心（天津）有限公司 | HIII dummy chest displacement correction method based on combined constraint system |
| CN112461549B (en) * | 2020-10-28 | 2022-12-06 | 中汽研汽车检验中心（天津）有限公司 | HIII dummy chest displacement correction method based on combined constraint system |
| CN114910094A (en) * | 2022-07-15 | 2022-08-16 | 中汽研汽车检验中心（天津）有限公司 | Method, device and storage medium for determining false head offset in automobile crash test |
| CN115575141A (en) * | 2022-12-09 | 2023-01-06 | 中国汽车技术研究中心有限公司 | Method and equipment for calibrating chest of automobile crash dummy |
| CN115575141B (en) * | 2022-12-09 | 2023-06-06 | 中国汽车技术研究中心有限公司 | Method and equipment for calibrating chest of automobile crash dummy |
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| CN105509672B (en) | 2018-05-25 |
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