| 电阻式压力敏感阵列足底压力测量及噪声滤除方法研究 |
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| 引用本文： | 蔡楷,毛志勇,蔡萍. 电阻式压力敏感阵列足底压力测量及噪声滤除方法研究[J]. 传感技术学报, 2013, 26(1): 12-16 |
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| 作者姓名： | 蔡楷 毛志勇 蔡萍 |
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| 作者单位： | 上海交通大学仪器工程系,上海,200240;上海交通大学仪器工程系,上海,200240;上海交通大学仪器工程系,上海,200240 |
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| 基金项目： | 国家科技支撑计划重点项目(2009BAI71B06);国家自然科学基金重大项目(61190124) |
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| 摘 要： | 介绍了一种电阻式压力分布测量系统,通过采用零电势电路有效地抑制了阵列间的串扰.分析了系统的噪声机制,针对噪声特性提出一种混合噪声滤波算法——改进的IMF中值滤波方法.算法首先使用边界模板检测出脉冲噪声并通过中值滤波滤除；而后使用阈值自适应中值滤波方法滤除高斯噪声.实验结果表明本文提出的方法较已有方法具有更强的噪声滤除能力.
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| 关 键 词： | 压力映射 中值滤波 自适应滤波 压力传感器 |
A Pressure Mapping System based on Piezoresistive Array and Noise Reduction |
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| CAI Kai , MAO Zhiyong , CAI Ping. A Pressure Mapping System based on Piezoresistive Array and Noise Reduction[J]. Journal of Transduction Technology, 2013, 26(1): 12-16 |
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| Authors: | CAI Kai MAO Zhiyong CAI Ping |
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| Affiliation: | *(Department of Instrument Science and Engineering,Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | A piezo-resistive array based pressure mapping system is introduced. By means of zero-potential method, crosstalk among array elements can be effectively suppressed. Based on the analysis of the noise mechanism of the system, a hybrid noise filtering algorithms is proposed. Impulse noise is identified by using boundary template and removed by median filter firstly; then a threshold adaptive median filter is used to reduce Gaussian noise. Experiments results show that the proposed method demonstrates stronger capability in noise reduction compared with existing methods. |
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| Keywords: | pressure mapping median filter adaptive filter pressure sensor |
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