手持式核磁共振波谱仪的研究  

Research of hand-hold nuclear magnetic resonance spectrum instrument

作　　者：刘婧[1] 薛鹏[1] 

机构地区：[1]长春工业大学电气与电子工程学院,吉林长春130012

出　　处：《仪器仪表用户》2005年第5期13-14,共2页Instrumentation

摘　　要：针对现场中甲醛含量测定方法复杂的特点,以DSP TMS320C6701 微处理器为平台,核磁共振检测技术为基础,通过开发专用功能芯片A/D9852,用数字检波技术代替模拟正交检波,完成了核磁共振波谱仪的监测、检测、记录、控制以及提供上微机接口等功能。简化了现在类似的测量设备所需的复杂手段。找出了一种能实现快速,方便,精确的测量方法,并通过实验验证了该系统调节具有精度高,响应快等优点。Aim at the characteristics of uneasy checking on dimethoxy methane,special purpose modules are developed on DSP platform, based on NMR skill of detecting. The replacement for analog quadrature phase-detection with digital phase-detection,the complicat ed process of the similar instruments in China was simplified and a fast ,simple and exact determination method was gained.Experiments result show that the accuracy of this system adjustment proves to be satisfactory and speed of response is fast.

关 键 词：核磁共振 磁场 

分 类 号：TM938.82[电气工程—电力电子与电力传动] TL817.5[核科学技术—核技术及应用]