Reliable Remote-Monitoring Electrochemical Potentiostat for Glucose Measurements

• 作 者: JIN Yang WANG Hong LV Zhenglia
• 机 构: Department of Automation,Siemens Ltd. Corporate Technology
• 出 处: 清华大学学报（英文版）
• 发表日期: 2004年期
• 关键词: electrochemical potentiostat reliable remote-monitoring glucose measurements

Electrochemical methods have been widely used in the chemical and pharmaceutical industries, which require accurate concentration measurements, chemical reaction detections and analyses. The elec-trochemical potentiostat, the core element in electrochemical instruments, have been discussed as a hot topic addressing the difficulty of applying high-preclsion constant voltage and picoampere current meas-urements. Meanwhile, reliable potenUostats are in demand for complicated industrial environments with noises as well as requirements of remotemonitors. This paper describes a potentiostat for industrial glucose measurement that is not only accurate but also fault tolerant to guarantee high reliability in industrial envi-ronments. The instrument uses standard industrial communication protocols, profibus, and a 4-20 mA cur-rent loop, for remote control and monitoring. Experimental results show that this design has 0.01% accuracy with 1 mV resolution for voltage applications and 0.01% accuracy with 1 pA resolution for current measure-ments. The design is also shown to be highly reliable in noisy environments.