电流型电化学遥测系统的研制与应用

研制了一种微型嵌入式遥测系统,并利用此系统实现了电化学传感检测。遥测系统的输出电压范围为!0.5~0.5 V,分辨率〈1 m V;电流检测范围为!1~1μA,最小分辨率为0.2 n A。此遥测系统是基于ADu CM360微处理器设计的,包括恒电位仪、电流检测模块和无线模块,尺寸大小为24 mm×13 mm×11 mm。利用Lab VIEW开发上位机软件,用于数据存储和实时显示。为了验证该系统的精度和可靠性,对系统进行了电学性能测试。应用遥测系统检测不同浓度抗坏血酸溶液的电流响应,电极施加的工作电位为30 m V,在浓度范围50~300μmol/L内,抗坏血酸电极的电流响应与其浓度呈现良好的线性...

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Published in分析化学 Vol. 44; no. 9; pp. 1465 - 1470
Main Author 李晓钢 郭彬乾 秦泰春 郝洁 于萍 毛兰群
Format Journal Article
LanguageChinese
Published 北京航空航天大学可靠性与系统工程学院,北京,100191%中国科学院化学研究所，活体分析化学院重点实验室，北京100190 2016
Subjects
安培法
微型化
抗坏血酸
电化学
遥测系统
Amperometric
Ascorbic acid
遥测系统
电化学
安培法
Telemetry system
Electrochemistry
抗坏血酸
微型化
Miniaturization
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Summary:研制了一种微型嵌入式遥测系统,并利用此系统实现了电化学传感检测。遥测系统的输出电压范围为!0.5~0.5 V,分辨率〈1 m V;电流检测范围为!1~1μA,最小分辨率为0.2 n A。此遥测系统是基于ADu CM360微处理器设计的,包括恒电位仪、电流检测模块和无线模块,尺寸大小为24 mm×13 mm×11 mm。利用Lab VIEW开发上位机软件,用于数据存储和实时显示。为了验证该系统的精度和可靠性,对系统进行了电学性能测试。应用遥测系统检测不同浓度抗坏血酸溶液的电流响应,电极施加的工作电位为30 m V,在浓度范围50~300μmol/L内,抗坏血酸电极的电流响应与其浓度呈现良好的线性关系,线性方程为I（n A）=2.98C（AA）（μmol/L）-137.39,线性相关系数R~2=0.984。并以脑缺血模型为例,探索了仪器在活体动物研究中的适用性。结果表明,该系统可用于相关动物模型的研究。
Bibliography:LI Xiao-Gang1 , GUO Bin-Qian1 , QIN Tai-Chun1 , HAO Jie2, YU Ping2, MAO Lan-Qun2 （School of Reliability and Systems Engineering, Beihang University, Beijing 100191, China; Key Laboratory of Analytical Chemistry for Living Biosystems , Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China）
A new micro embedded telemetry system was developed for the amperometric sensing detection. Its output voltage range was ±0.5 V and resolution was 1 m V. The current acquisition range was ±1 μA and the minimum resolution was 0. 2 n A. This telemetry system was designed based on microprocessor ADu CM360,including a potentiostat,a current detection module and a radio module. And the size was only 24 mm ×13 mm × 11 mm. The computer software written in Lab VIEW language was used for data storage and display.In order to verify the accuracy and reliability of this system,an electrical performance test was performed. The current response for ascorbic acid with different concentration was recorded by using the te
ISSN:0253-3820
DOI:10.11895/j.issn.0253-3820.160234