冰层厚度自动化观测系统的试验研究

以河冰为例,在实验室中进行了三个冰生消变化过程中直流电微弱传导性质的试验。通过对大量测量数据的抽样分析,验证了冰的直流电传导性;总结了冰在生消变化过程中其直流传导性与冰、传导距离、直流电压的关系,得出了冰具有直流电微弱传导特性。利用这一性质,结合单片机及计算机图形学技术来实现对冰的生消变化及冰层厚度进行自动化观测。该研究成果可用于极地海冰厚度的自动化监测,为极地海冰厚度变化过程监测提供技术基础。

The Experimental Research of Automatic Observation System of Icy Thickness Based on the Weak Conductance of Ice

Pure ice is insulator. Whatever river ice, or sea ice, containes a bit of foreign particle in its natural state. Whether the existence of foreign particle is the true reason that natural ice has a faint conductance, which has not been determined by experiment now. This paper takes river ice as an example and introduces three experiments about the direct current faint conductivity in the course of ice-up and ice-out in the lab. Using sampling analysis from a great number of measuring data, the paper validates the direct current conductivity of ice and sums up the relation of its direct current conductivity with ice, conduction distance, direct current voltage in the changing course of ice-up and ice-out, reachs a conclusion that ice has direct current faint conductivity. Making use of this character, the paper realizes the system mechanism of automation observing about the changes of icing and ice melt, ice band thickness with single-chip microcomputer and computer graphics.