433.92 MHz声表面波水果气体传感器研究  

Study on 433.92 MHz SAW Fruit Gas Sensor

作　　者：李亚[1] 薛严冰[1] 宋智[1] 

机构地区：[1]大连交通大学电气信息学院,辽宁大连116000

出　　处：《压电与声光》2015年第5期742-745,751,共5页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(61201092);辽宁省自然科学基金资助项目(201202015);辽宁省高等学校优秀人才支持计划基金资助项目(LJQ2013047)

摘　　要：为监测水果在仓储及运输等过程中的新鲜程度,研制了一种以声表面波(SAW)单端谐振器为载体的SAW水果释放气体传感器。运用原位一步聚合法制备了聚苯胺气敏材料,在器件的敏感区域上用滴涂法涂覆敏感膜。实验结果表明,该传感器在室温条件下,对水果气体具有灵敏度高,响应恢复快等特性。对敏感机理进行了理论分析。In order to monitor the fruit freshness in the process of storage,transportation and so on,a surface acoustic wave（SAW）fruit releasing gas sensor with the single port resonator is developed.The sensitive material of polyaniline was synthesized by one-step in situ polymerization method,and the sensitive membrane was coated on the device with dropping process.The experimental results show that the sensor has the advantages of high sensitivity,quick response recovery characteristics for the detection of fruit gas at room temperature.The sensitive mechanism is analyzed theoretically.

关 键 词：气体传感器 声表面波(SAW)谐振器 聚苯胺 水果释放气体 敏感机理 

分 类 号：TN65[电子电信—电路与系统]