CN105509672B - A kind of vehicle collision experiment dummy breast bottoms out determination methods and device - Google Patents
A kind of vehicle collision experiment dummy breast bottoms out determination methods and device Download PDFInfo
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- CN105509672B CN105509672B CN201510885813.8A CN201510885813A CN105509672B CN 105509672 B CN105509672 B CN 105509672B CN 201510885813 A CN201510885813 A CN 201510885813A CN 105509672 B CN105509672 B CN 105509672B
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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 present invention provides a kind of vehicle collision experiment dummy breasts to bottom out determination methods and device, wherein the described method includes：Automobile B-column is obtained to collide in collision experiment the acceleration at moment；The dummy for obtaining driver side collides the acceleration at moment in collision experiment；The dummy for obtaining driver side collides the breast compressions displacement at moment in collision experiment；According to the acceleration of the automobile B-column got and the acceleration of dummy, speed of related movement of the dummy compared with automobile is calculated；According to breast compressions displacement of the dummy got in collision experiment, the breast compressions rate of dummy is calculated；Situation is bottomed out according to what the speed of related movement and the breast compressions rate judged dummy breast position.Vehicle collision experiment dummy breast provided by the present invention, which bottoms out determination methods and device, to make effective judgement to whether driver side dummy breast in experiment bottoms out, and foundation is provided to the analytical judgment of experiment for automotive safety engineers and technicians.
Description
Technical field
The present invention relates to automotive safety engineering field, more particularly to a kind of vehicle collision experiment dummy breast bottoms out judgement side
Method and device.
Background technology
In the traffic accident of head-on crash, driver's chest is the position for be easy to causeing injury, standard GB/T 1155-
The passenger protection of 2014 frontal crash of vehicles, using the injury values of dummy breast as important evaluation content.Generation head-on crash
When, steering wheel easily damages dummy breast, so being driven in safety restraint system by safety belt and air bag to buffer
Member and the collision of steering wheel, if safety restraint system matching is unreasonable, it may appear that the situation that driver's chest bottoms out makes driver
With steering wheel rigid contact occurs for chest, so as to which chest be caused to injure, endangers driver's life security.But from experiment video recording
From the point of view of, it due to being blocked caused by airbag deployment, can not judge whether dummy breast is contacted with steering wheel, be engineering skill
The analysis of experiments of art personnel brings difficulty.
The content of the invention
The present invention provides a kind of vehicle collision experiment dummy breasts to bottom out determination methods and device, and its purpose is to solve
The problem of whether driver's chest bottoms out when certainly automobile collides.
In order to achieve the above object, the embodiment provides a kind of vehicle collision experiment dummy breasts to bottom out judgement
Method, the described method includes：
Automobile B-column is obtained to collide in collision experiment the acceleration at moment；
The dummy for obtaining driver side collides the acceleration at moment in collision experiment；
The dummy for obtaining driver side collides the breast compressions displacement at moment in collision experiment；
According to the acceleration of the automobile B-column got and the acceleration of dummy, opposite fortune of the dummy compared with automobile is calculated
Dynamic speed；
According to breast compressions displacement of the dummy got in collision experiment, the breast compressions rate of dummy is calculated；
Situation is bottomed out according to what the speed of related movement and the breast compressions rate judged dummy breast position.
Wherein, the acceleration for the automobile B-column that the basis is got and the acceleration of dummy calculate dummy compared with automobile
Speed of related movement the step of include：
Pass through formula achest_vehicle(t)=achest(t)-avehicle(t), relative acceleration of the dummy compared with automobile is calculated,
Wherein, achest_vehicle(t)Represent t moment dummy compared with the relative acceleration of automobile, achest(t)Represent that t moment dummy is touching
Hit the acceleration for testing the moment that collides, avehicle(t)Represent t moment automobile B-column collision experiment collide the moment plus
Speed；
Pass through formulaT moment dummy is calculated compared with automobile
Speed of related movement, wherein vchest_vehicle(t)Represent speed of related movement of the t moment dummy compared with automobile.
Wherein, breast compressions displacement of the dummy that the basis is got in collision experiment calculates the chest of dummy
The step of compression speed, includes：
Pass through formulaThe breast compressions rate of dummy is calculated, wherein, Vchest(t)Represent t
The breast compressions rate of moment dummy, Dchest(t)Represent the breast compressions displacement of t moment dummy.
Wherein, it is described that bottoming out for driver side dummy is judged according to the speed of related movement and the breast compressions rate
The step of situation, includes：
According to the dummy calculated compared with the speed of related movement of automobile, establish speed of related movement and become compared with the time
The first curve changed；
According to the breast compressions rate of the dummy calculated, second song of the breast compressions rate compared with time change is established
Line；
Analyze first curve and second curve, when first curve occur with second curve it is be overlapped
When, it is determined that the driver side dummy bottoms out；Otherwise, do not bottom out.
The embodiment of the present invention additionally provides a kind of vehicle collision experiment dummy breast and bottoms out judgment means, described device bag
It includes：
First acquisition module, the acceleration at the moment that collides for obtaining automobile B-column in collision experiment；
Second acquisition module, the acceleration at the moment that collides for obtaining the dummy of driver side in collision experiment；
3rd acquisition module, the breast compressions position at the moment that collides for obtaining the dummy of driver side in collision experiment
Shifting amount；
First computing module, for according to the acceleration of automobile B-column and the acceleration of dummy got, calculating dummy's phase
For the speed of related movement of automobile；
Second computing module for the breast compressions displacement according to the dummy got in collision experiment, calculates false
The breast compressions rate of people；
Judgment module, for judging dummy breast position according to the speed of related movement and the breast compressions rate
Bottom out situation.
Wherein, first computing module includes：
First computing unit, for passing through formula achest_vehicle(t)=achest(t)-avehicle(t), calculate dummy compared with
The relative acceleration of automobile, wherein, achest_vehicle(t)Represent t moment dummy compared with the relative acceleration of automobile, achest(t)
Represent that t moment dummy collides the acceleration at moment in collision experiment, avehicle(t)Represent that t moment automobile B-column is real in collision
Issue after examination and approval the acceleration of raw collision moment；
Second computing unit, for passing through formulaWhen calculating t
Dummy is carved compared with the speed of related movement of automobile, wherein vchest_vehicle(t)Represent t moment dummy compared with the opposite of automobile
Movement velocity.
Wherein, second computing module includes：
3rd computing unit, for passing through formulaThe breast compressions rate of dummy is calculated,
Wherein, Vchest(t)Represent the breast compressions rate of t moment dummy, Dchest(t)Represent the breast compressions displacement of t moment dummy.
Wherein, described device further includes：
First establishes module, for the speed of related movement according to the dummy calculated compared with automobile, establishes opposite fortune
Move first curve of the speed compared with time change；
Second establishes module, and for the breast compressions rate according to the dummy calculated, it is opposite to establish breast compressions rate
In the second curve of time change；
Analysis module, for analyzing first curve and second curve, when first curve and described second
When curve is overlapped, it is determined that the driver side dummy bottoms out；Otherwise, do not bottom out.
The said program of the present invention has the beneficial effect that：
Vehicle collision experiment dummy breast provided by the present invention bottoms out determination methods and device can be to driving in experiment
Whether member side dummy breast bottoms out the problem of making effective judgement, finding safety restraint system matching in time, and solves in time
Certainly, provide safeguard for the security performance of vehicle, so as to protect the life security of user.
Description of the drawings
Fig. 1 is the flow chart of the method for the invention；
Fig. 2 is the concrete operations flow chart of the method for the invention；
Fig. 3 is the reference axis figure of the first curve of the present invention and the second curve；
Fig. 4 is the structure diagram of device of the present invention.
Specific embodiment
To make the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention needs whether to bottom out the problem of judging to dummy breast in test for existing, provides one
Kind vehicle collision experiment dummy breast bottoms out determination methods and device.
As shown in Figure 1, the embodiment provides a kind of vehicle collision experiment dummy breasts to bottom out determination methods, institute
The method of stating includes：
Step 1, automobile B-column is obtained to collide in collision experiment the acceleration at moment；
Step 2, the dummy for obtaining driver side collides the acceleration at moment in collision experiment；
Step 3, the dummy for obtaining driver side collides the breast compressions displacement at moment in collision experiment；
Step 4, according to the acceleration of the automobile B-column got and the acceleration of dummy, dummy is calculated compared with automobile
Speed of related movement；
Step 5, the breast compressions displacement according to the dummy got in collision experiment calculates the breast compressions of dummy
Rate；
Step 6, feelings are bottomed out according to what the speed of related movement and the breast compressions rate judged dummy breast position
Condition.
Method described in the above embodiment of the present invention is specially that adding for automobile B-column is gathered in frontal crash of vehicles experiment
Speed, the acceleration of driver side dummy and breast compressions displacement, dummy is calculated compared with vapour according to the data got
The speed of related movement of vehicle and the breast compressions rate of dummy bottom out situation with what this judged dummy breast position.The present invention's
Vehicle collision experiment dummy breast described in above-described embodiment bottoms out determination methods
No bottom out makes effective judgement, finds the problem of safety restraint system matches in time, and solves in time, is the safety of vehicle
Performance provides safeguard, so as to protect the life security of user.
Wherein, the acceleration for the automobile B-column that the basis is got and the acceleration of dummy calculate dummy compared with automobile
Speed of related movement the step of include：
Pass through formula achest_vehicle(t)=achest(t)-avehicle(t), relative acceleration of the dummy compared with automobile is calculated,
Wherein, achest_vehicle(t)Represent t moment dummy compared with the relative acceleration of automobile, achest(t)Represent that t moment dummy is touching
Hit the acceleration for testing the moment that collides, avehicle(t)Represent t moment automobile B-column collision experiment collide the moment plus
Speed；
Pass through formulaT moment dummy is calculated compared with automobile
Speed of related movement, wherein vchest_vehicle(t)Represent speed of related movement of the t moment dummy compared with automobile.
Wherein, breast compressions displacement of the dummy that the basis is got in collision experiment calculates the chest of dummy
The step of compression speed, includes：
Pass through formulaThe breast compressions rate of dummy is calculated, wherein, Vchest(t)Represent t
The breast compressions rate of moment dummy, Dchest(t)Represent the breast compressions displacement of t moment dummy.
Dummy described in the above embodiment of the present invention compared with automobile speed of related movement by the dummy compared with
The relative acceleration of automobile begins to pass through integration from 0ms and obtains, and breast compressions rate is opened by dummy breast compression displacement amount from 0ms
Beginning obtains by differential.
As shown in Figures 2 and 3, it is described that driver side is judged according to the speed of related movement and the breast compressions rate
Dummy's includes the step of bottoming out situation：
Step 61, it is opposite to be established compared with the speed of related movement of automobile according to the dummy calculated for speed of related movement
In the first curve of time change；
Step 62, according to the breast compressions rate of the dummy calculated, breast compressions rate is established compared with time change
The second curve；
Step 63, first curve and second curve are analyzed, when first curve and second curve go out
When being now overlapped, it is determined that the driver side dummy bottoms out；Otherwise, do not bottom out.
The above embodiment of the present invention calculates speed of related movement and dummy of the dummy compared with automobile by formula
Breast compressions rate can be apparent from the data variation at each moment within a certain period of time, and clear in a coordinate system
Explicitly show, facilitate engineers and technicians whether dummy breast is bottomed out in checking test is researched and developed judge and
The problem of Shi Faxian safety restraint systems match, and solve in time, it provides safeguard for the security performance of vehicle, is used so as to protect
The life security of person.
As shown in figure 4, the embodiment of the present invention, which additionally provides a kind of vehicle collision experiment dummy breast, bottoms out judgment means,
Described device includes：First acquisition module, on automobile B-column, for obtaining automobile B-column when collision experiment collides
The acceleration at quarter；Second acquisition module, it is real in collision for obtaining the dummy of driver side on the dummy of driver side
Issue after examination and approval the acceleration of raw collision moment；3rd acquisition module mounted on the chest locations of driver side dummy, drives for obtaining
The dummy of member side collides the breast compressions displacement at moment in collision experiment；First computing module gets for basis
The acceleration of automobile B-column and the acceleration of dummy, calculate dummy compared with automobile speed of related movement；Second calculates mould
Block for the breast compressions displacement according to the dummy that gets in collision experiment, calculates the breast compressions rate of dummy；Sentence
Disconnected module bottoms out situation for judge dummy breast position according to the speed of related movement and the breast compressions rate.
Wherein, first computing module includes：
First computing unit, for passing through formula achest_vehicle(t)=achest(t)-avehicle(t), calculate dummy compared with
The relative acceleration of automobile, wherein, achest_vehicle(t)Represent t moment dummy compared with the relative acceleration of automobile, achest(t)
Represent that t moment dummy collides the acceleration at moment in collision experiment, avehicle(t)Represent that t moment automobile B-column is real in collision
Issue after examination and approval the acceleration of raw collision moment；
Second computing unit, for passing through formulaWhen calculating t
Dummy is carved compared with the speed of related movement of automobile, wherein vchest_vehicle(t)Represent t moment dummy compared with the opposite of automobile
Movement velocity.
Wherein, second computing module includes：
3rd computing unit, for passing through formulaThe breast compressions rate of dummy is calculated,
Wherein, Vchest(t)Represent the breast compressions rate of t moment dummy, Dchest(t)Represent the breast compressions displacement of t moment dummy.
As shown in Figure 3 and Figure 4, described device further includes：First establishes module, for according to the dummy that calculates compared with
The speed of related movement of automobile establishes first curve of the speed of related movement compared with time change；Second establishes module, is used for
According to the breast compressions rate of the dummy calculated, second curve of the breast compressions rate compared with time change is established；Analysis
Module, for analyzing first curve and second curve, when first curve occur with second curve it is be overlapped
When, it is determined that the driver side dummy bottoms out；Otherwise, do not bottom out.
Vehicle collision experiment dummy breast described in the above embodiment of the present invention bottoms out determination methods and device pass through it is right
The acceleration of the automobile B-column, the acquisition of the acceleration of the driver side dummy and the breast compressions displacement, by public affairs
The calculating of formula is drawn corresponding curve and is recorded in a coordinate system, calculates the speed of related movement and the chest pressure
Contracting rate can make effective judgement to whether driver side dummy breast in experiment bottoms out, find security constraint in time
The problem of system matches, and solve in time, it provides safeguard for the security performance of vehicle, so as to protect the life security of user.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of vehicle collision experiment dummy breast bottoms out determination methods, which is characterized in that the described method includes：
Automobile B-column is obtained to collide in collision experiment the acceleration at moment；
The dummy for obtaining driver side collides the acceleration at moment in collision experiment；
The dummy for obtaining driver side collides the breast compressions displacement at moment in collision experiment；
According to the acceleration of the automobile B-column got and the acceleration of dummy, relative motion speed of the dummy compared with automobile is calculated
Degree；
According to breast compressions displacement of the dummy got in collision experiment, the breast compressions rate of dummy is calculated；
Situation is bottomed out according to what the speed of related movement and the breast compressions rate judged dummy breast position.
2. vehicle collision experiment dummy breast according to claim 1 bottoms out determination methods, which is characterized in that the basis
The acceleration of the automobile B-column got and the acceleration of dummy, calculate dummy compared with automobile speed of related movement the step of
Including：
Pass through formula achest_vehicle(t)=achest(t)-avehicle(t), relative acceleration of the dummy compared with automobile is calculated, wherein,
achest_vehicle(t)Represent t moment dummy compared with the relative acceleration of automobile, achest(t)Represent t moment dummy in collision experiment
Collide the acceleration at moment, avehicle(t)Represent that t moment automobile B-column collides the acceleration at moment in collision experiment；
Pass through formulaT moment dummy is calculated compared with the opposite of automobile
Movement velocity, wherein vchest_vehicle(t)Represent speed of related movement of the t moment dummy compared with automobile.
3. vehicle collision experiment dummy breast according to claim 1 bottoms out determination methods, which is characterized in that the basis
The step of breast compressions displacement of the dummy got in collision experiment, the breast compressions rate for calculating dummy, includes：
Pass through formulaThe breast compressions rate of dummy is calculated, wherein, Vchest(t)Represent that t moment is false
The breast compressions rate of people, Dchest(t)Represent the breast compressions displacement of t moment dummy.
4. vehicle collision experiment dummy breast according to claim 1 bottoms out determination methods, which is characterized in that the basis
The speed of related movement and the breast compressions rate judge including the step of bottoming out situation for dummy breast position：
According to the dummy calculated compared with the speed of related movement of automobile, speed of related movement is established compared with time change
First curve；
According to the breast compressions rate of the dummy calculated, second curve of the breast compressions rate compared with time change is established；
First curve and second curve are analyzed, when first curve is Chong Die with the second curve appearance, then
Determine that the driver side dummy bottoms out；Otherwise, do not bottom out.
5. a kind of vehicle collision experiment dummy breast bottoms out judgment means, which is characterized in that described device includes：
First acquisition module, the acceleration at the moment that collides for obtaining automobile B-column in collision experiment；
Second acquisition module, the acceleration at the moment that collides for obtaining the dummy of driver side in collision experiment；
3rd acquisition module, the breast compressions displacement at the moment that collides for obtaining the dummy of driver side in collision experiment
Amount；
First computing module, for according to the acceleration of automobile B-column that gets and the acceleration of dummy, calculate dummy compared with
The speed of related movement of automobile；
Second computing module for the breast compressions displacement according to the dummy got in collision experiment, calculates dummy's
Breast compressions rate；
Judgment module, for judging bottoming out for dummy breast position according to the speed of related movement and the breast compressions rate
Situation.
6. vehicle collision experiment dummy breast according to claim 5 bottoms out judgment means, which is characterized in that described first
Computing module includes：
First computing unit, for passing through formula achest_vehicle(t)=achest(t)-avehicle(t), dummy is calculated compared with automobile
Relative acceleration, wherein, achest_vehicle(t)Represent t moment dummy compared with the relative acceleration of automobile, achest(t)Represent t
Moment dummy collides the acceleration at moment in collision experiment, avehicle(t)Represent that t moment automobile B-column occurs in collision experiment
The acceleration of collision moment；
Second computing unit, for passing through formulaIt is false to calculate t moment
People is compared with the speed of related movement of automobile, wherein vchest_vehicle(t)Represent relative motion of the t moment dummy compared with automobile
Speed.
7. vehicle collision experiment dummy breast according to claim 5 bottoms out judgment means, which is characterized in that described second
Computing module includes：
3rd computing unit, for passing through formulaThe breast compressions rate of dummy is calculated, wherein,
Vchest(t)Represent the breast compressions rate of t moment dummy, Dchest(t)Represent the breast compressions displacement of t moment dummy.
8. vehicle collision experiment dummy breast according to claim 5 bottoms out judgment means, which is characterized in that described device
It further includes：
First establishes module, for the speed of related movement according to the dummy calculated compared with automobile, establishes relative motion speed
Spend the first curve compared with time change；
Second establishes module, for according to the breast compressions rate of dummy calculated, establish breast compressions rate compared with when
Between the second curve for changing；
Analysis module, for analyzing first curve and second curve, when first curve and second curve
When being overlapped, it is determined that the driver side dummy bottoms out；Otherwise, do not bottom out.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105737743B (en) * | 2016-05-05 | 2018-03-30 | 中国汽车技术研究中心 | The measuring method of dummy H point displacements in a kind of impact test based on shooting 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 |
| 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 |
| CN114910094B (en) * | 2022-07-15 | 2022-11-15 | 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 |
| 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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Effective date of registration: 20190416 Address after: 101300 No. 1 Tongxin Road, Zhaoquanying Town Zhaofeng Industrial Base, Shunyi District, Beijing Patentee after: Beijing automobile group cross-country car Co., Ltd. Address before: 101300 99 Shuanghe street, Renhe Town, Shunyi District, Beijing Patentee before: Beijing Automobile Research General Institute Co., Ltd. |