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1. (WO2018077176) WEARABLE DEVICE AND METHOD FOR DETERMINING USER DISPLACEMENT IN WEARABLE DEVICE

Pub. No.:    WO/2018/077176    International Application No.:    PCT/CN2017/107603
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Thu Oct 26 01:59:59 CEST 2017
IPC: G01C 21/16
Applicants: BEIJING PICO TECHNOLOGY CO., LTD.
北京小鸟看看科技有限公司
Inventors: SHU, Yulong
舒玉龙
MA, Jinbo
马金波
SUN, Enqing
孙恩情
Title: WEARABLE DEVICE AND METHOD FOR DETERMINING USER DISPLACEMENT IN WEARABLE DEVICE
Abstract:
A wearable device and a method for determining a user displacement in the wearable device. The wearable device comprises an inertial measurement unit (IMU) (201), a vision sensor (203), and a microcontroller unit (MCU) (202). The IMU (201) acquires motion parameter information of a user in a motion process to obtain a plurality of groups of corresponding IMU data; the vision sensor (203) acquires motion position information of the user in the motion process to obtain a plurality of frames of corresponding image data; the MCU (202) is used for receiving the IMU data and the image data, calculating an acquisition moment of the image data and an acquisition moment of the IMU data, determining the IMU data to be fused according to the acquisition moment of the two adjacent frames of image data, and fusing the IMU data between the two adjacent frames of image data, so as to determine the displacement of the user in the motion process. In the solution, the user displacement is measured by a vision sensor and the measurement result of the IMU (201) is compensated; the user displacement measurement accuracy is improved; further, the user experience and the competitiveness of the wearable device can be improved.