基于NMR的粮仓多场耦合图形化探测系统研究

Research on Graphical Detection System for Multi-Filed Interaction in Grain Storage based on NMR

粮仓是一个复杂的生态系统,其内部生物、非生物以及环境的耦合关系复杂,且只能对温度等少数参数进行探测,粮仓生态近乎“黑箱”。为了便于研究粮仓复杂的耦合关系、核实其中的基本规律,研究提出了一种基于核磁共振(Nuclear Magnetic Resonance,NMR)的粮仓多场耦合图形化探测系统。该系统由核磁共振成像分析仪、粮仓模拟装置和数据采集处理系统三部分组成,可同时实现粮堆温度、湿度和水分三参数的真实精准探测,并能通过配套云图生成软件直观、形象地呈现粮堆温度场、湿度场和水分场分布云图。该系统首次将低场核磁共振成像技术应用于粮堆多场耦合作用研究领域,为探明粮仓生态复杂的耦合关系,进一步证实相关理论研究结论提供了一种新的技术手段。该系统的提出有助于深化行业正在致力发展的粮堆多场耦合及生物场理论。

The stored grain can be regarded as a complex ecosystem, which exist a complex multi-field coupling interaction among the abiotic factors, the biotic factors, and the surrounding environment. In this system, only a few parameters such as temperature can be accurately detected, which causes the system to operate like a “black box” to the outside world. To truly and accurately detect various grain pile parameters, and further study the multi-field coupling interaction in grain piles, a graphical detection system for multi-filed interaction in grain storage based on NMR has been developed. The system consists of an NMR imaging analyzer, a test grain bin, and a data acquisition and processing system, which can accurately detect the grain pile temperature, humidity, and moisture simultaneously, and intuitively and vividly present the cloud map of the temperature field, humidity field, and moisture field in the grain pile through the cloud map drawing software. In this system, the NMR imaging technology was applied to the research field of multi-field coupling interaction in grain piles for the first time, which can provide a new technical means to find out the complex coupling relationship of stored grain ecosystem and further confirm the correctness of relevant theoretical research. The development of this system will be helpful in deepening the theory of multi-field coupling and biological field of grain piles, developed by the industry.