Digital pressure meter used in extreme site environment

Abstract

The invention discloses a digital pressure gauge used in an extreme site environment, which includes a watch case, a circuit board inside the watch case and a battery connected to the circuit board, and is characterized in that it also includes a A thermal insulation cover for heat absorption and heat preservation outside the shell and a heating control device for controlling the temperature of the circuit board; the thermal insulation cover includes double-layer vacuum glass, a heat absorption layer and a thermal insulation layer, and the The heat-absorbing layer is located inside the double-layer vacuum glass, and the heat-insulating layer is located outside the double-layer vacuum glass; the heating control device includes a heating circuit connected in series with a heat dissipation resistor, a heat preservation cover plate and a control panel. The controller for switching on and off the heating circuit of the present invention has a fully sealed structure, good heat preservation performance, low energy consumption, long service life, waterproof, explosion-proof, and corrosion-resistant, suitable for working under extreme conditions in the field, high informatization, and convenient for remote control 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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