Camera system applicable to vacuum and cryogenic environment

Abstract

The invention discloses a camera system applicable to vacuum and cryogenic environment. The camera system comprises a seal case, a camera, a monitoring system, a heating system and a ventilation system. The camera is arranged inside the seal case; the front end of the seal case is made of transparent material; the side walls of the seal case are provided with a vacuum aviation plug, a ball-head joint pipe air-inlet mouth and a ball-head joint pipe air-outlet mouth; the vacuum aviation plug is connected with a power supply A and the monitoring system which are outside a vacuum chamber as well as the camera which is inside the seal case via cables respectively; the ball-head joint pipe air-inlet mouth and the ball-head joint pipe air-outlet mouth are connected with an air source and air which are outside the vacuum chamber via connection pipes respectively; a heating sheet is pasted onto the outside wall of the seal case and is rubber sealed; a power supply B, which is outside the vacuum chamber, is connected with the heating sheet via a cable; a thermocouple is pasted on the outside wall of seal case; and a signal line of the thermocouple is connected with the monitoring system outside the vacuum chamber. The advantages of the camera system are that: physical damage, caused by the vacuum environment, to electronic components and the like of the camera is prevented; and problem of low voltage discharge in the vacuum environment for the camera is solved.

Description

technical field [0001] The invention relates to a camera system, in particular to a camera system suitable for vacuum and cryogenic environments. Background technique [0002] Aerospace is the embodiment of a country's scientific and technological level, and it has a wide and far-reaching impact on national and international politics, economy, military and social life. In order to study the vacuum performance of attitude control engines, many countries have established vacuum chambers to simulate vacuum environment for testing. The inner wall of the vacuum chamber is designed with a low-temperature cryogenic pump to increase the vacuum degree of the test, and low-temperature liquid such as liquid nitrogen is introduced to absorb the gas emitted by the engine during the test to increase the vacuum degree of the test. [0003] In order to observe the test process in the vacuum chamber, it is necessary to add a camera system, but the environment of the vacuum chamber will brin...

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Problems solved by technology

[0004] First of all, the high vacuum environment may cause the sealed components such as electrolytic capacitors to burst from the inside, and the low voltage discharge in the high vacuum environment will al

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