摘要
Abstract
For the actual needs of through casing formation resistivity logging in the measurement fields , this paper designs a weak voltage measurement system , including the control circuit which is based on the TMS320F2812 , high performance , high magni-fication and low noise preamplifier circuit , and 24 bit high precision A/D converter . Using the casing as the experimental carrier , an experimental platform is built to measure the weak voltage by changing the resistance . And at last , the value of measured resis-tance is gotten by calculating.关键词
微弱电压测量/TMS320F2812/ADC/CAN 总线Key words
weak voltage measurement/TMS302F2812/ADC/CAN bus分类
信息技术与安全科学
