| 摘要: |
| 提出了一种使用20 kHz超声波检测浴室跌倒状况的方法，并进行了浴室环境中的测试.由于跌倒会造成失重，身体运动速度增大，导致产生多普勒效应，造成反射的超声频率的偏移.根据这一频移判断人是否跌倒，并采取相关措施，可以在保护隐私的前提下结合浴室的特点保护人们的健康和安全，为智能医疗的发展打下良好的基础. |
| 关键词: 跌倒检测 浴室 超声 多普勒效应 |
| DOI：10.3969/J.ISSN.1000-5137.2018.02.015 |
| 分类号:TP212 |
| 基金项目: |
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| Bathroom fall detection based on ultrasonic Doppler effect |
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Zhang Dajun, Lan Hengrong, Wu Youlong
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School of Information Science and Technology, ShanghaiTech University, Shanghai 201210, China
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| Abstract: |
| A method of bathroom fall detection using 20 kHz ultrasound is proposed and tested in bathroom environment.The fall can cause weight loss and increase the velocity of the body movement,resulting in Doppler effect and the shift of the reflected ultrasonic frequency.Based on this frequency shift we can decide whether a person is fall and take relevant measures,so as to protect people's health and safety under the premise of protecting privacy combined with the characteristics of the bathroom,and this method lays a good foundation for the development of intelligent medicine. |
| Key words: fall detection bathroom ultrasound Doppler effect |
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