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Self-recording type measurement device for ice content of frozen soil

A measuring device and self-recording technology, which is applied in the direction of soil material testing, material inspection, etc., can solve the problems of soil sampling and measurement difficulties, and achieve the effects of simplified measuring equipment, stable performance and easy maintenance

Active Publication Date: 2015-11-25
NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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  • Application Information

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Problems solved by technology

Ice is one of the important components of permafrost, and observing its changes is an important reference for studying permafrost activities. However, the current long-term field observation of the ice content of permafrost is a technical problem, because the special structure of permafrost makes the soil Sampling, measuring, etc. are very difficult

Method used

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  • Self-recording type measurement device for ice content of frozen soil
  • Self-recording type measurement device for ice content of frozen soil
  • Self-recording type measurement device for ice content of frozen soil

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Embodiment Construction

[0015] The electric heating grid (1) used in the present invention is coated with ZS-1091 high temperature resistant ceramic insulating coating, which can withstand high temperature of 600°C, breakdown strength greater than 10KV / mm, chemical stability, aging resistance, water resistance, chemical corrosion resistance, coating The layer has a high thermal conductivity. The temperature sensor (2) is packaged in stainless steel, the waterproof DS18b20 temperature probe, the soil temperature and humidity sensor (3) and the data collector are respectively 5TM and EM50 produced by Decagon Company of the United States. The temperature control switch circuit (5) is composed of a temperature sensor ( 2) It is composed of a single-chip system board with STC89C52R+ as the core controller, the battery (9) installed in the incubator (8) is a battery pack composed of batteries (PV100-12) in series, and the solar panel (7) is solar energy The solar power generation group composed of battery ...

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Abstract

The invention relates to a self-recording type measurement device for the ice content of frozen soil. After factors for causing temperature state changes of the frozen soil are eliminated, the temperature of the frozen soil is recovered to a previous stable state under the influences of local natural conditions; by using the property, the frozen soil with the unit volume is heated to be melted; and the soil humidity before and after the frozen soil is melted is measured so that the ice content of the frozen soil with the unit volume is indirectly estimated. A soil temperature and humidity sensor is fitted with a temperature sensor and is mounted at geometrical center formed by four electric heating nets coated with high-temperature-resisting insulating materials; and the connection and disconnection of the electric heating nets and a power supply are controlled through a temperature sensor switching circuit. The storage battery is mounted in a heat insulation box and is connected with a solar charging controller to be connected with a solar cell panel to form a power supply system. The self-recording type measurement device has relatively low cost, can be operated stably and reliably, has a simple structure principle, and is suitable for long-time automatic detection of the ice content of the wild frozen soil.

Description

technical field [0001] The invention relates to a self-recording ice content measuring device of frozen soil, which can realize the measurement and record of the ice content value of frozen soil within a fixed time interval, and complete long-term field observation experiments through automatic charging, measurement and recording . Background technique [0002] Permafrost is a soil medium that is extremely sensitive to temperature and contains abundant underground ice. Research data on ecosystems in permafrost regions at high latitudes in the Arctic show that in recent years, the active layer of permafrost has deepened due to rising temperatures, and ecosystems have varied. Significant changes have taken place in these ecological elements. At the same time, a large amount of greenhouse gases and water are released, causing profound changes in the regional water energy cycle system, which in turn has an important impact on the entire earth system. In my country, the permafro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 文军王作亮王欣任生霞赵林郑东海康悦田辉张堂堂
Owner NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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