衛生福利部統計處106年死因結果摘要表顯示事故傷害是年齡1-14歲的主要死亡原因。事故傷害死亡人數在近十年雖然有下降的趨勢，但其中的意外墜落死亡人數不僅在近十年不斷上升，甚至佔事故傷害比例達到近三十年的高峰。
年齡越小，頭部佔身體重量比越高，因此容易重心不穩跌倒。判斷頭部傷害的方式由一開始的大體和動物進行測試，再到使用碰撞人偶進行實驗，而近期則是多用電腦模擬來分析與討論。由於大體不易取得、碰撞人偶成本高昂、電腦模擬須先熟悉軟體的介面以及參數設定等操作方式，故本文目的為找出一簡單又能快速求得兒童頭部傷害實驗值之辦法。
本研究建立的頭部數學模型應用方式為輸入兒童墜落高度或是撞擊速度，即可得出頭部撞擊地面的加速度與時間關係，進而求得頭部傷害指數。亦可輸入頭部撞擊物的材質，如地墊、安全帽等至模型中，藉此協助和設計安全保護設施。而本研究模型的應用結果與實驗值比對準確率超過九成，為一有可行性的孩童墜落頭部碰撞數學模型。

The purpose of this study was to find a simple and quick way to obtain experimental values for children's head injuries and to assist and design safety protection facilities. The method is to establish a mathematical model of the head, as long as inputing the falling height of the child or the striking velocity. The results of the relationship between the acceleration and time of the head hitting the ground and the head injury index can be obtained. When it comes to application, the proper material property of the impacting specimens should be given to the model, such as floor mats, helmets into the model. Based on the results from model the accuracy exceed 90% compare with the experimental value. Accordingly, the mathematical child head model developed in this study is reliable and feasible.

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