| 任晶秋,蒋 杨,张光华.AHRS 的老人跌倒检测算法[J].电子测量与仪器学报,2020,34(12):190-196 |
| AHRS 的老人跌倒检测算法 |
| The algorithm of elderly fall detection based on AHRS |
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| DOI： |
| 中文关键词: 老年人 跌倒 姿态角 航姿参考系统 检测 |
| 英文关键词:senior fall attitude angle AHRS testing |
| 基金项目:东北石油大学青年基金(2019QNL-34)资助项目 |
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| 中文摘要: |
| 独居老人如在室内或室外发生意外摔倒时,没有得到及时医疗救助治疗,将给老年人造成巨大的心理与身体的伤害。
将航姿参考系统(attitude and heading reference system,AHRS)应用在跌倒检测中,将跌倒的过程转变成姿态的变化,从而来判断
跌倒的程度。 AHRS 航姿系统比过去原有实验方案 3 种姿态角度均有所提升,俯仰角( pitch)提升 2. 371%,滚转角( roll)提升
9. 238%,偏航角(yaw)提升 4. 682%,加速度计最大值精确了 0. 171g,AHRS 航姿系统融合扩展卡尔曼滤波器在检测老年人跌倒
姿态中比过去原有实验方案在检测时间计算上提升了 1 s。 综上实验验证 AHRS 航姿融合在检测老年人跌倒上可以数据更精
确,计算时间更少,在研究人体真实跌倒姿态中更贴近了一步。 |
| 英文摘要: |
| If an elderly person lives alone and accidentally falls indoors or outdoors, she / he will not receive timely medical assistance and
treatment, which will cause huge psychological and physical harm. In this paper, the attitude and heading reference system (AHRS) is
used in fall detection, and the fall process is transformed into a change in attitude to judge the degree of fall. The AHRS attitude and
heading system has been improved from the previous three experimental attitude angles, the pitch angle is increased by 2. 371%, the roll
angle is increased by 9. 238%, the yaw angle is increased by 4. 682%, the maximum accelerometer accuracy is 0. 171g. The system
fusion extended Kalman filter has improved the detection time calculation of the elderly by 1 second compared with the original
experimental scheme in the past. In summary, the experiment proves that the AHRS attitude and attitude fusion can detect the fall of the
elderly with more accurate data and less calculation time, which is a step closer to study the real fall posture of the human body. |
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