摘要
微小电容检测是电容层析成像技术的一个关键和难点。针对油水两相流电容层析成像系统的具体要求,本文研制一种微小电容交流测量电路。电容测量电路的静态测量误差小于0.2%,漂移为0.05% /小时。实验结果表明满足使用要求。
Electrical capacitance tomography is the main trend of technology, in which how to measure the low value capacitance is the key issue of implementation. For this purpose, a novel measurement circuit for electrical capacitance tomography system is presented in this paper. Experiments indicate that static error is less than 0.2% for capacitance measurement with 0.05% of drift per hour. Experimental results verify the performance of this circuit quite satisfactory
出处
《电路与系统学报》
CSCD
2004年第4期107-109,共3页
Journal of Circuits and Systems
基金
黑龙江省重点科技攻关项目(GC02A126)
黑龙江省自然科学基金(F01-25)
教育部重点科技项目(204043)
黑龙江省教育厅计划项目(1054G014)
哈尔滨市学科后备带头人基金(2003AF鬃5015)
关键词
电容层析成像
微小电容测量电路
electrical capacitance tomography
measurement circuit for low capacitance
