摘要
为充分发挥DSP实时信号处理能力强和FPGA的逻辑控制以及硬件可编程的优势,构建了一套基于FPGA和DSP的16电极ERT数据采集系统。模块化的设计保证了系统良好的可维护性和可扩展性。FPGA完成激励信号产生、前端信号处理、系统逻辑控制和正交序列解调,DSP完成数据的后处理和成像算法的实现,实现了两种控制器的优势互补,在一定程度上提高了ERT系统的速度和精度。
In order to combine real-time signal processing ability of DSP and logic controllable,hardware programmable of FPGA,a novel 16 electrodes ERT data acquisition system was constructed.In this paper,FPGA was used to realize excitation signal generation,front-end signal processing,system logic control and orthogonal sequences demodulation,while DSP accomplished data post-processing and image reconstruction.Experiments show that this modularization design guarantees a better maintainability and expansibility and then effectively improves imaging speed and measurement precision of the ERT system.
出处
《传感技术学报》
CAS
CSCD
北大核心
2011年第7期1011-1016,共6页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金重大国际合作项目(60820106002)
国家自然科学基金重点项目(60532020)
关键词
电阻层析成像
FPGA
DSP
正交序列解调
模块化
electrical resistance tomography
FPGA
DSP
orthogonal sequences demodulation
modular design
