基于石英晶体传感器的凝血酶检测系统的实现  

Development of thrombin detection system based on quartz crystal sensor

作　　者：王青[1] 

机构地区：[1]陕西国防工业职业技术学院,西安710300

出　　处：《国外电子测量技术》2017年第10期47-50,共4页Foreign Electronic Measurement Technology

摘　　要：近些年来,石英晶体为生物传感器领域的重要方向。利用石英晶体对其表面物质变化的特性,构建出具有微小质量检测能力的新型生物传感器。搭建一套硬件系统对QC输出的10 MHz的基频信号进行分析研究。通过测量与分析输出信号的频率变化规律得到结果。实验结果表明,该测量系统空气中稳定后的频率误差波动小于10 Hz,在测量结束时频率误差波动小于30Hz。In recent years ,quartz crystal sensor has become one of the research focus in the field of biosensor .Its princi-ple is the change characteristics betw een the quartz crystal and the material on its surface .Based on the principle ,the pi-ezoelectric biosensor has the feature of the grade detection capability .The paper sets up a hardware system and analyzes the fundamental frequency signal w hich the frequency is 10 M Hz from QC .By measuring the final frequency of difference signal ,the experimental results are obtained .The experimental results show that the frequency fluctuation of the meas-urement system is less than 10 Hz in the air condition and the frequency fluctuation is less than 30 Hz w hen the measure-ment is over .

关 键 词：石英晶体 传感器 频率 测量 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]