A Two-Dimensional (2D) Distributed-Deflection Sensor for Tissue Palpation With Correction Mechanism for Its Performance Variation

Yichao Yang; Siqi Guo; Zhili Hao

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A Two-Dimensional (2D) Distributed-Deflection Sensor for Tissue Palpation With Correction Mechanism for Its Performance Variation

机译：用于组织触诊的二维（2D）分布式偏转传感器及其性能变化的校正机制

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摘要

This paper presents a proof-of-concept study on a two-dimensional distributed-deflection sensor for tissue palpation and the associated correction mechanism for its performance variation. The core of the sensor is one whole polydimethylsiloxane microstructure embedded with a sensing-plate/transducer array. Upon pressing the sensor against a tissue, the sensing-plate array translates its elasticity distribution to the deflection distribution, which registers as resistance changes by the transducer array and is further converted into the stiffness distribution. The connection of the sensing-plate/transducer array into one piece allows the sensor interacting with a tissue in a continuous manner and, thus, unifies misalignment errors from non-ideal normal contact between the sensor and the tissue. A correction mechanism is developed to remove the effect of performance variation among the sensing-plate/transducer array on the measured stiffness distribution of a tissue. The stiffness distribution normalized to the minimum stiffness across a tissue is utilized to identify the existence and location of a tumor. The related measurement errors are both theoretically and experimentally examined.

机译：本文提出了一种用于组织触诊的二维分布式挠度传感器的概念验证及其相关的性能变化校正机制。传感器的核心是一个完整的聚二甲基硅氧烷微结构，嵌有传感板/换能器阵列。在将传感器压向组织时，传感板阵列将其弹性分布转换为挠度分布，该挠度分布随着换能器阵列的电阻变化而记录下来，并进一步转换为刚度分布。感测板/换能器阵列连接成一体，使传感器能够以连续的方式与组织相互作用，从而统一了传感器与组织之间不理想的正常接触所引起的失准误差。开发了一种校正机制，以消除感测板/换能器阵列之间的性能变化对组织的测得刚度分布的影响。标准化为跨组织的最小刚度的刚度分布用于识别肿瘤的存在和位置。相关的测量误差在理论上和实验上都得到了检验。

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来源
《IEEE sensors journal》 |2016年第11期|4219-4229|共11页
作者
Yichao Yang; Siqi Guo; Zhili Hao;
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作者单位

Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA, USA;

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正文语种 eng
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关键词
Tactile sensors; misalignment; performance; performance variation; sensing-plate/transducer array; tissue palpation; variation;

机译：触觉传感器;错位;性能;性能变化;传感板/换能器阵列;组织触诊;变化;

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A Two-Dimensional (2D) Distributed-Deflection Sensor for Tissue Palpation With Correction Mechanism for Its Performance Variation

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