Digital pressure meter used in extreme site environment

Abstract

The invention discloses a digital pressure meter used in an extreme site environment. The digital pressure meter comprises a meter shell, a circuit board and a battery, wherein the circuit board and the battery are positioned in the meter shell; the battery is connected with the circuit board. The digital pressure meter is characterized by also comprising a heat preservation and insulation cover and a heating control device, wherein the heat preservation and insulation cover is arranged outside the meter shell and is used for absorbing and preserving heat; the heating control device is used for controlling the temperature of the circuit board; the heat preservation and insulation cover comprises double-layer vacuum glass, a heat absorption layer and a heat-preservation layer; the heat absorption layer is positioned on the inner side of the double-layer vacuum glass; the heat-preservation layer is positioned outside the double-layer vacuum glass; the heating control device comprises a heating loop connected in series with a radiation resistor, a heat-preservation cover plate and a controller for controlling the switching-on and switching-off of the heating loop. The digital pressure meter is shaped into a totally-sealed structure, and is high in heat-preservation performance, low in energy consumption, long in service life, waterproof, explosion-proof, anticorrosive, suitable for work under an outdoor extreme condition, high in informationization degree and convenient to remotely monitor and manage.

Description

technical field [0001] The invention relates to a digital pressure gauge device used in an extreme site environment, in particular to a device designed to ensure the normal operation of the digital voltmeter under low temperature and unattended conditions, which has both heat preservation function and wireless transmission Digital pressure gauge device with function and automatic alarm function. Background technique [0002] Antarctic expeditions are of great significance to the study of climate change, ecosystems, and the global environment. At the same time, Antarctica is also a good place to study space physics and cosmology, so expeditions to Antarctica are becoming more and more frequent. However, the Antarctic region is subject to harsh environmental conditions such as extreme cold on the plateau, low air pressure, and lack of oxygen all year round. According to calculations, the average temperature in August at an altitude of 4,000 to 4,100 meters in the Antarctic in...

AI Technical Summary

Problems solved by technology

However, the digital display pressure gauge is easy to fail in low temperature environment. There are roughly three reasons: First, the various original components (such as coils, capacitors, etc.) In addition, after the pressure gauge enters a warm indoor environment from a cold environment, condensation may occur, and the small water droplets on the surface of the circuit board will corrode components and even cause a short circuit; It cannot flow, and the heat is lost through heat conduction, causing the medium in the pressure gauge to freeze and fail; third, because the pressure surface plate is not tight, the air circulation is large, and the heat loss of the medium in the pressure gauge is accelerated, resulting in the pressure gauge freezing

In a low temperature environment, in order to prevent the pressure gauge from being frozen, it is usually wrapped with insulation materials such as felt. Although this has a certain insulation effect, it has become a safety hazard because the surface of the pressure gauge is covered and cannot be checked in time.

The natural environment in Antarctica is very harsh. Many scientific research stations cannot be staffed for a long time, and the monitoring of pressure is needed in real time. At the same time, the battery life of the pressure gauge is limited and needs to be replaced manually.

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