Aimed at the fall issues of the aged, a wearable pre-impact fall early warning and protection system which consists of an early fall alarm, protection airbags, a remote monitoring platform and a guardian’s smart phone application was developed. When fall happens, the early fall alarm triggerd airbag system, then airbags in belt inlfated as soon as possible to reduce the damage to the aged. After the aged fall down, the early fall alarm rang and sent message to guardian for help. Meanwhile, the kinesiology data during falling time was sent to remote monitoring platform for storage, and falling location was showed in the electronic map. Finally, the reliability of this early fall alarm and protection system was veriifed. The results indecate that this system could detect falls accurately, accomplish a series functions such as early fall warning and alarm, airbag inlfation, data transmission and storage and real-time location, which may be beneifcial to reduce direct damage and shorten rescue time.%针对老人跌倒伤害预防的社会难题，设计了一种穿戴式跌倒预警和防护系统，该系统包括跌倒预警器、安全气囊装置、远程监护平台和监护人手机应用程序。当跌倒发生时，跌倒预警器会触发安全气囊快速充气，以减少老人跌倒后所受到的损伤。老人倒地后，跌倒预警器会报警，并发送短信给监护人求助。同时，跌倒过程人体运动学数据会发送到远程监护平台，并显示跌倒事件发生的位置。最后通过实验验证该跌倒预警和防护系统功能的可靠性。结果表明，该系统可以较准确地检测跌倒，完成跌倒预警报警、气囊快速充气、数据传输和存储、监控平台实时定位等一系列功能，对减少老年人跌倒的直接损伤和缩短救助老人的时间有一定帮助。
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