Automatic frozen soil observer and using method thereof

Abstract

The invention relates to a using method of an automatic frozen soil observer. The method comprises the following steps: connecting an aviation socket I of the automatic frozen soil observer with an aviation plug of an upper computer, drilling a hole on the ground, vertically installing an outer sleeve in the hole, filling enough fine soil into a gap between the outer sleeve and the hole, and tamping to prevent the outer sleeve from sinking; enabling the 4-20cm scale line of the outer sleeve to be flush with the ground, and tightly attaching the outer sleeve to the soil; enabling a data collector module 1 to send a command to a temperature measuring unit 2 every 60 seconds to start temperature collection; in an initial state, if the single-point sampling temperature of the temperature measuring unit 2 is lower than 0 DEG C, initializing the point to be in a frozen state, and if not, initiating the point to be in a molten state; and according to the temperature change characteristic that water condenses into ice or ice melts into water, extracting the freezing point / melting point is extracted through the threshold value to obtain the upper limit, the lower limit and the depth data of frozen soil. The reliability of data acquisition, processing, storage and transmission is improved.

Description

technical field

[0001] The invention relates to an automatic observation instrument for frozen soil and a use method thereof, which are used for automatically observing the depth of frozen soil and the upper and lower limits of a frozen layer. Background technique

[0002] At present, in the field of meteorology, manual instrumentation is mainly used for permafrost observation. Using TB1-1 type permafrost (also known as Danilin permafrost), the water injection soft hose with a depth of 0.5 to 4.5 meters is lifted to the ground at regular intervals every day. First, feel the freezing of water in the hose by hand to judge the level and depth of the frozen soil. This observation method is relatively primitive, labor-intensive, and the inner tube is easily broken during the process of extraction and touch measurement. In addition, due to the subjective perception of observers, there are human errors in the permafrost observation results. At the same time, with the increasing de...

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