现代电子技术Issue(14)：120-123,4.
基于核酸适体传感器的ATP浓度检测系统设计
Design of ATP concentration detection system based on aptamer sensor
摘要
Abstract
Since the aptamer amperometric sensor signal is generally weak,high noise and difficult to be measured,the de⁃tection circuit of aptamer sensor which can precisely detect ATP concentration was designed. The circuit is mainly composed of constant potential circuit,I/V conversion circuit,multi⁃stage amplifier circuit,band⁃pass filtering circuit and lock⁃in amplifier circuit. The relationship between the output voltage of aptamer sensor and ATP concentration of the object under test were ana⁃lyzed by means of a cyclic voltammetry. The testing results indicates that the system has high SNR,excellent sensitivity and linearity of 0.9940,which can satisfy the requirements of precision detection on spot.关键词
核酸适体传感器/ATP浓度/微电流检测/锁定放大/电路测试Key words
aptamer sensor/ATP concentration/weak current signal detection/lock-in amplifier/circuit testing分类
信息技术与安全科学引用本文复制引用
姜利英,岳保磊,梁茂,周鹏磊,肖小楠..基于核酸适体传感器的ATP浓度检测系统设计[J].现代电子技术,2015,(14):120-123,4.基金项目
国家自然科学基金项目（61002007）；河南省科技创新人才计划项目 （）
