| 基于单传感器温度调制的无线电子鼻系统设计 |
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| 引用本文： | 宋凯,王祁,张振平.基于单传感器温度调制的无线电子鼻系统设计[J].仪器仪表学报,2011,32(1). |
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| 作者姓名： | 宋凯 王祁 张振平 |
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| 作者单位： | 哈尔滨工业大学电气工程及自动化学院,哈尔滨,150001 |
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| 摘 要： | 针对无线电子鼻系统应用多个气体传感器组成传感器阵列功耗过大的问题,本文研究了基于温度调制技术的单传感器动态检测方法,并设计了相应的无线电子鼻系统,实现了单一传感器对混合气体的定量分析.根据半导体气体传感器在不同工作温度下具有不同响应灵敏度的特点,用高压5 V、低压1.5 V、周期为150 s的矩形脉冲加热电压控制传感器工作在高温和低温两种状态,通过选取一个加热周期内传感器动态响应在4个时刻的采样点,构成4个虚拟传感器响应.利用支持向量机回归算法建立混合气体分析模型,提高小样本情况下的泛化性能.对氢气和甲烷两种气体混合样本进行实验,结果表明该系统可有效地分析混合气体成分,具有较高的精度,较低的功耗,并可通过无线传感器网络对目标气体进行实时监控.
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| 关 键 词： | 无线电子鼻 动态检测 温度调制 支持向量回归 低功耗 |
Design of a wireless electronic nose system based on single sensor temperature modulation |
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| Song Kai,Wang Qi,Zhang Zhenping.Design of a wireless electronic nose system based on single sensor temperature modulation[J].Chinese Journal of Scientific Instrument,2011,32(1). |
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| Authors: | Song Kai Wang Qi Zhang Zhenping |
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| Affiliation: | Song Kai,Wang Qi,Zhang Zhenping(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | Aiming at the problem that the multi-sensor gas sensor array in a wireless electronic nose(WEN) system consumes excessive power,a dynamic detection method of single sensor based on temperature modulation technique was studied.A WEN system was designed to implement quantitative analysis of mixed gas using a single sensor.According to the characteristic that semiconductor gas sensor has different response sensitivities under different working temperatures,a rectangular pulse heating voltage with high voltage ... |
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| Keywords: | wireless electronic nose dynamic detection temperature modulation support vector regression low power |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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