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首页> 外文期刊>International Journal of Industrial Ergonomics >Validation of inertial-magnetic wearable sensors for full-body motion tracking of automotive manufacturing operations
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Validation of inertial-magnetic wearable sensors for full-body motion tracking of automotive manufacturing operations

机译：用于汽车制造运算全身运动跟踪的惯性磁性可穿戴传感器的验证

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The objective of this study is to determine if wearable inertial-magnetic tracking systems can be suitably used to conduct full-body motion analysis when performing common tasks in the automotive manufacturing industry. Twenty unimpaired participants were recruited for this study. Seventeen Xsens inertial-magnetic sensors and fifty-two Cortex reflective markers were secured onto each of the participants to record their operations at six workstations. We compared the root mean square error produced by the two measuring systems in 13 human joints. We also evaluated the linear positional error of the left foot placement. Due to the complexity of the shoulder girdle motion, we compared the outputs from the Cortex and Xsens systems in two additional postural tests with a 3rd camera system. Our results indicate that the Xsens platform is affected by positional drifts; however, such drifts are contained in an acceptable range. Due to the use of magnetometers to measure tilt, data from these complementary inertial sensors can be used to reduce drift by continuously correcting the orientation obtained by integrating sensor data. The Xsens system maintains acceptable accuracy (r.m.s.e. < 10 degrees for most of the joints), even in the presence of large metal parts that could cause systematic errors in the transducer output, which is based on the sensor fusion of an inertial-magnetic sensor. We believe that the Xsens, a wearable inertialmagnetic tracking system, could be a viable alternative to camera-based systems for full-body biomechanical model analysis.
机译：本研究的目的是确定可穿戴惯性磁性跟踪系统是否可以在进行汽车制造业中的常见任务时适当地用于进行全身运动分析。为这项研究招募了二十个未受害的参与者。将十七个Xsens惯性磁传感器和五十二个皮质反射标记固定在每个参与者上，以在六个工作站记录其操作。我们比较了13个人关节中的两个测量系统产生的根均方误差。我们还评估了左脚放置的线性位置误差。由于肩带运动的复杂性，我们将来自皮层和Xsens系统的输出与第3相机系统的两个额外姿势测试进行了比较。我们的结果表明，Xsens平台受到位置漂移的影响;然而，这种漂移包含在可接受的范围内。由于使用磁力计来测量倾斜，来自这些互补惯性传感器的数据可用于通过连续校正通过集成传感器数据而获得的取向来减少漂移。 Xsens系统保持可接受的精度（对于大多数接头，即使在存在可能导致换能器输出中的系统误差的大型金属部件的情况下，这是基于惯性磁传感器的传感器融合的大规模金属部件的存在。我们认为，Xsens是可穿戴惯性跟踪系统，可以是对全身生物力学模型分析的基于相机的系统可行的替代品。

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