Method, apparatus and storage medium for measuring motion response of dummies in crash tests
A collision test and dummy motion technology, applied in measuring devices, impact tests, vehicle tests, etc., to achieve the effects of reducing calculation errors, improving measurement accuracy, and reducing conversion complexity
Active Publication Date: 2022-07-12
CHINA AUTOMOTIVE TECH & RES CENT +1
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[0003] However, there is currently no related technology that can directly and accurately measure the motion response trajectory of any part of the dummy
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[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described clearly and completely below. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
[0029] Due to the short time and rapid speed change of the car crash test process, the motion response of each part of the dummy has the influence of the transient state that is difficult to capture and the superposition of nonlinear crash loads. Therefore, how to scientifically, simply and accurately obtain the part to be tested on the dummy is The movement directions and movement trajectories at different times during the collision test process are the technical problems m...
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The invention relates to the field of automobile passive safety testing, and discloses a method, device and storage medium for measuring the motion response of a dummy in a crash test. The method includes: acquiring an image of the measurement mark through a camera during the collision test, the measurement mark is fixed on the to-be-measured part of the dummy, and the dummy is set in association with a preset platform; and the first coordinate position of the measurement mark in the image is determined; The second coordinate position corresponding to the first coordinate position in the static coordinate system is determined according to the preset conversion relationship. The X axis of the static coordinate system is parallel to the movement direction of the preset platform, and the Y axis of the static coordinate system is parallel to the movement direction of the preset platform. Vertically, one side of the pixel cell of the image is parallel to the X axis, and the other side intersecting with one side is parallel to the Y axis; the motion response trajectory of the part to be measured is determined according to the initial position of the part to be measured and the second coordinate position. This embodiment can realize relatively accurate measurement of the motion response of any part of the dummy.
Description
technical field [0001] The invention relates to the field of automobile passive safety testing, in particular to a method, equipment and storage medium for measuring the motion response of a dummy in a crash test. Background technique [0002] Automobile crash test is the technical core for evaluating vehicle safety performance, and crash dummy (referred to as dummy) is the key test equipment directly used for vehicle safety performance evaluation instead of occupants. The automobile crash test has the characteristics of instantaneous high load. Due to the impact of the dummy, various parts of the dummy have obvious motion responses relative to the initial position. The motion response trajectories of different parts of the dummy are an important evaluation index for evaluating its biological simulation. It is the main evaluation basis for automobile safety performance tests such as pedestrian protection test and airbag protection effectiveness test. [0003] However, there...
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IPC IPC(8): G01M17/007G01M7/08G01B11/00G06T7/70
CPCG01M17/0078G01M7/08G01B11/002G06T7/70G06T2207/10016G06T2207/30196G06T2207/30204G06T2207/30241G06T7/20G06T7/251G06T7/248
Inventor 马伟杰刘志新吴志新陈弘刘伟东王凯解明浩
Owner CHINA AUTOMOTIVE TECH & RES CENT