Passive safety system protects the passengers in case of an accident such as airbag and seat-belt tightener. Active safety systems help prevent accidents such as ABS and TCS.

被动安全系统在事故是保护乘客，如一个胶皮安全气囊和安全带。主动安全系统帮助预防事故，如abs和TCS。

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This paper introduces a new type of seat-belt warning system, which is controlled by single chip with warning light and sound reminding drivers to pull on the seat-belt.

介绍一种新型安全带提示装置，它采用单片机控制以提示灯和声音来提示驾驶员系上安全带。

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