测控技术2012，Vol.31Issue(9)：11-15,5.
电容层析成像系统中的数字相敏解调技术
Digital Phase Sensitive Demodulation in Electrical Capacitance Tomography System
摘要
Abstract
Phase sensitive demodulator is the key to the electrical capacitance fomography( ECT) system. The existence of low accuracy, great noise and long stability time of analog devices and other issues in traditional analog demodulation become a bottleneck in further improving accuracy and speed of ECT system. Based on the FPGA, it achieves a fast, high-precision signed digital phase sensitive demodulation. Validation shows that the digital phase sensitive demodulation complete enough to meet the requirements of ECT system in accuracy and speed.关键词
电容层析成像/数字相敏解调/FPGA/VerilogKey words
electrical capacitance tomography/ digital phase sensitive demodulation/ FPGA/ Verilog分类
信息技术与安全科学引用本文复制引用
马敏,韩路军,侯敏,张彩霞,王化祥..电容层析成像系统中的数字相敏解调技术[J].测控技术,2012,31(9):11-15,5.基金项目
国家自然科学基金青年基金资助项目(61102096) （61102096）
国际重大项目资助项目(60820106002) （60820106002）
中国民航大学中央高校基金资助项目(ZXH2010C005) （ZXH2010C005）
