Astronaut urine detection method based on liquid-core waveguide Raman spectroscopy

Abstract

The invention discloses an astronaut urine detection method based on a liquid core waveguide Raman spectrum. The method is implemented on an astronaut urine detection system based on the liquid core waveguide Raman spectrum, and the method comprises five steps of continuous sample injection of test liquid, dynamic liquid core waveguide Raman test, real-time collection of waste liquid, test end andpost-data processing, and residual waste liquid post-treatment. The astronaut urine detection method based on the liquid core waveguide Raman spectrum provided by the invention has the following beneficial effects that a detection method based on a moving liquid core waveguide Raman spectrum is adopted, which can realize the enhancement of weak Raman signals and the statistical measurement of a large number of samples, so that the component detection of astronaut urine is more reliable; a direct current electric field method is adopted in waste liquid collection to meet the requirements in amicrogravity environment; and at the end of the test, clear water is adopted to clean a liquid core, thus the environment-friendly and sanitary requirements are satisfied.

Description

technical field [0001] The invention relates to a micro-area Raman detection method, in particular to a micro-area detection method based on a liquid-core waveguide laser Raman spectrum, which is suitable for daily monitoring of astronaut urine in a space station microgravity environment and belongs to the field of photoelectric detection . Background technique [0002] Manned spaceflight refers to the flight activities of humans driving spacecraft in space to engage in various sciences, experiments, researches, etc. to and from the earth. The areas where astronauts work mainly include manned spacecraft, space stations, and alien planet camps. Among them, the space station is the most common and long-term workplace. In the space station, astronauts are in a long-term microgravity environment, and their physical conditions need to be monitored at any time in order to discover their potential health effects and problems. [0003] Many test samples can be selected for the he...

AI Technical Summary

Problems solved by technology

[0005] Laser Raman spectroscopy is a convenient and feasible method to detect polymers, but because the content of creatinine, protein, urea, etc. in urine is low, the Raman signal is very weak, so if Raman spectroscopy is used for astronauts Urine monitoring needs to solve the problem of its weak signal. In addition, it also needs to consider the needs of spaceflight in terms of microgravity, sample injection, residual liquid recovery, compactness, and durability.

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