WANG Zhimin, TAO Baolin, Yü Peng, et al. Indoor positioning technology of pedestrian based on wearable IMU[J]. 2021, 40(1): 46-48+52. DOI: 10.13873/J.1000-9787(2021)01-0046-03.
IMU is attached to instep of foot to measure information of acceleration and angular velocity of the human body in real time while walking.Through threshold value judgment and zero speed correction model
step size
step frequency and direction of pedestrian are calculated
so as to draw the pedestrian’s moving trajectory.Finally
the model is verified on experimental platform for wearable IMU trajectory monitoring.Experimental result of pedestrian trajectory drawn by resolving
is compared with measured trajectory while walking.Results show that the accuracy of this method is more than 98%
which realizes the portable and wearable real-time accurate measurement of pedestrians in indoor environment.
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