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首页> 外文期刊>Sensors Journal, IEEE >Optical Fiber Specklegram Sensor for Measurement of Force Myography Signals
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Optical Fiber Specklegram Sensor for Measurement of Force Myography Signals

机译：光纤散斑图传感器，用于测量力量肌成像信号

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摘要

The development of an optical fiber specklegram sensor for the assessment of force myography signals is reported. The device consists of microbending transducers attached to the user forearm by means of Velcro straps. The muscular stimuli generated in response to hand movements cause the fibers to be mechanically pressed by the deformer structures, resulting in light modulation. The optical signals are acquired and processed according to specklegram analysis, by computing the normalized intensity inner product of speckles for two reference postures. Finally, the average values are correlated to the fingers configurations by means of artificial neural networks. The system was evaluated for a set of 11 static gestures, making it possible to detect subtle variations in the spatial distribution of forces impressed by the forearm flexor and extensor muscles. Moreover, the technique was tested for different subjects, yielding an average accuracy of 89.9% on the estimation of fingers configurations, even with the utilization of a reduced number of transducers.
机译：报道了用于评估力量肌成像信号的光纤散斑图传感器的开发。该设备包括通过维可牢尼龙搭扣带连接到用户前臂的微弯曲传感器。响应于手部运动而产生的肌肉刺激使纤维被变形器结构机械地挤压，从而导致光调制。通过计算两个参考姿势的散斑的归一化强度内积，根据散斑图分析来获取和处理光信号。最后，平均值通过人工神经网络与手指的形状相关。该系统针对11种静态手势进行了评估，从而有可能检测前臂屈肌和伸肌施加的力的空间分布的细微变化。此外，该技术已针对不同的对象进行了测试，即使减少了换能器的使用量，其手指配置的估计平均精度也达到了89.9％。

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