High and low temperature resistant video monitoring device

Abstract

The invention discloses a high and low temperature-resistant video monitoring device, comprising an outer barrel, a bellows internal barrel, an exterior mirror flange, a fixed end cover welding flange, a first vacuum double-glazed sight glass, an electric heating wire, an LED (Light Emitting Diode) lamp, a camera, an air suction pipe, an air return pipe, a vacuumizing pipe, a ring-shaped air diffusing circle, a hermetic aviation connector, a first KF joint, a second KF joint, a third KF joint, an adiabatic support, a first oxygen-free copper seal ring, a second oxygen-free copper seal ring, athird oxygen-free copper seal ring, bolts and a second vacuum double-glazed sight glass. Heat is preserved between the outer barrel and the internal barrel through a vacuum multi-layer adiabatic heatpreservation method, when the external environment working condition is the high-temperature working condition, the device is cooled by nitrogen, and when the external environment working condition is the low-temperature working condition, a method of active heating compensation is used, so that video monitoring and lighting devices in high temperature environment or low temperature environment can work regularly.

Description

technical field [0001] The invention relates to a video surveillance device, in particular to a high and low temperature resistant video surveillance device, in particular to a high and low temperature resistant video surveillance device that can work in an environment from -196°C (liquid nitrogen temperature) to +100°C . Background technique [0002] The space environment simulation system of large-scale aerospace experiments, commercial high and low temperature boxes, and scientific research conducted by high and low temperature alternating laboratories often require visual monitoring devices to observe the operating conditions of various working equipment and measured objects in the target space in time . Compared with the observation window scheme, this monitoring device is located inside the system, which not only facilitates the observation of targets in hidden areas (dead corners of the observation window), greatly expands the field of view of the observation window;...

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Problems solved by technology

However, there are no literature and patent reports on the low-temperature imaging device that can withstand the temperature of liquid nitrogen.

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