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目的研究30°仰卧位下,真人与假人接受不同量程的冲击过载条件时输出响应的变化,探讨假人替代真人进行冲击实验的可行性。方法在冲击塔上进行真人5人次,3量程(4.67,8.96,11.33G)共15次的冲击,以及HybridⅢ型汽车碰撞假人6量程(6.77,10.39,16.93,21.11,24.98,31.11G),共12次的冲击,冲击波形为脉宽40～60ms的半正弦波。实验中实时监测真人实验前、中、后心电图变化。结果真、假人的额头和胸部的输出响应随平台输入G值的增大而增大,但真人在低G冲击下动态响应变化与假人存在较为明显的差异。真人在冲击过程中有一过性心率增高,实验后迅速恢复。结论假人在一定程度上与真实人体存在差别。真人的心电图变化主要是由精神紧张引起。
Objective To study the change of output response under the condition of 30 ° supine position and the live-dummy and the dummies under the different conditions of impact overload, so as to explore the feasibility of the impact test of dummy instead of real person. Methods A total of 15 shocks were conducted on the impact tower, including 5 live-fires, 3 ranges (4.67, 8.96, 11.33G) and 6 ranges of Hybrid III colliders (6.77,10.39,16.93,21.11,24.98,31.11G) A total of 12 times the impact of the impact of pulse-shaped pulse width of 40 ~ 60ms half-sine wave. Real-time monitoring experiments live experiments before, during and after ECG changes. As a result, the output response of the forehead and the chest of the dummy increased with the increase of the input G value of the platform, but there was a significant difference between the dynamic response and the dummy under the impact of low G shock. Live during the impact of a transient increase in heart rate, rapid recovery after the experiment. Conclusion Dummy to some extent, there is a difference between the real body. Live ECG changes are mainly caused by mental stress.