Shaping Resistive Bend Sensors to Enhance Readout Linearity
Shaping Resistive Bend Sensors to Enhance Readout Linearity
复制标题
塑造电阻弯曲传感器以增强读出线性度
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
G. Orengo
中科院分区：
文献类型：
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作者：
G. Saggio;Antonino Lagati;G. Orengo
电阻式弯曲传感器由于其弯曲时电阻变化的特性而在不同领域得到越来越多的应用。它们可以用于必须测量关节旋转的那些系统，特别是生物医学系统，以测量人体关节静态和动态姿势。尽管商业弯曲传感器具有诸如坚固性、低价格和长寿命等令人感兴趣的特性，但其响应实际上不是线性的，而测量弯曲角度的电子设备应当是线性的，以恢复人的姿势而不失真。在这项工作中，不同的接口传感器设备读出分析和比较的输出响应线性度的角度来看。为了获得尽可能接近理想线性的传感器特性，开发了一种从经验薄层电阻模型出发，用广义电阻条轮廓计算传感器特性的方法，以找到更合适的非均匀几何形状。
Resistive bend sensors have been increasingly used in different areas for their interesting property to change their resistance when bent. They can be employed in those systems where a joint rotation has to be measured, in particular biomedical systems, to measure human joint static and dynamic postures. In spite of their interesting properties, such as robustness, low price, and long life, the commercial bend sensors have a response which is not actually linear, as an electronic device to measure bend angles should be, to recover human posture without distortion. In this work, different interfaces for sensor device readout were analyzed and compared from the output response linearity point of view. In order to obtain a sensor characteristic as closer as possible to the ideal linear one, a way to calculate the sensor characteristic with a generalized resistive strip contour, starting from an empiric sheet resistance model, was developed, in order to find what is the more suitable nonuniform geometry.