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三电极电化学传感器的恒电位仪设计

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Indexed by:期刊论文

Date of Publication:2009-09-15

Journal:仪表技术与传感器

Included Journals:PKU、ISTIC、CSCD

Issue:9

Page Number:23-25

ISSN No.:1002-1841

Key Words:电化学传感器;三电极;便携性;恒电位仪

Abstract:三电极电化学传感器在化学、生物和环境监测等领域的应用越来越广泛,为了充分发挥其性能,并实现测量仪器的便携性,选用AT89S8252单片机和A/D、D/A转换器等IC芯片,设计了一种用于传感器电流信号检测的便携式恒电位仪.该恒电位仪通过电压负反馈调节系统使电化学传感器的工作电压等于基准电压,并保持恒定.为检测仪器的性能,用一个电路模型等效三电极电化学传感器进行了测试,实验结果表明该恒电位仪具有很好的精度.

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