Sub-saturated diving pressure reduction method and pressure reduction system

Abstract

The invention discloses a sub-saturated diving pressure reduction method and system. The sub-saturated diving pressure reduction method comprises the steps: acquiring the pressurization environment parameters of all pressurization staying stations in the pressurization process; determining an initial parameter at the beginning of pressure reduction; calculating a first stay station depth pressure; iteratively acquiring inert gas partial pressure in various theoretical organizations of the human body when the current stop station is ended, and selecting the theoretical organization of the human body with the maximum inert gas partial pressure value as a leading organization used in the iterative calculation; iteratively calculating the inert gas partial pressure in the leading organization when the next stop station starts; iteratively calculating the allowed residence time of the current residence station; and reducing the pressure according to the depth pressure of each staying station and the allowed staying time of each staying station. According to the technical scheme, the sub-saturation pressure reduction scheme adaptive to the actual situation can be automatically generated and flexibly adjusted.

Description

technical field [0001] The invention relates to the technical field of diving decompression, in particular to a sub-saturated diving decompression method and a decompression system. Background technique [0002] When divers return to the surface after the diving operation, in order to safely discharge the excessive inert gas dissolved in the body tissue, they must make a short stop at a certain depth during the ascent to ensure that the inert gas can be discharged from the body tissue more safely. This process is called diving pressurization, and the depth at which you stay is called a decompression stop (or decompression stop). Instructing divers to perform safe decompression requires the use of a diving decompression plan, also known as a diving decompression table. According to the depth at which the decompression starts and the underwater exposure time, the decompression plan can indicate at which depths the decompression stop should be performed. Information such as th...

AI Technical Summary

Problems solved by technology

This type of conventional diving decompression program has restrictions on the depth of use and the longest exposure time. It is usually required that the depth at which the decompression starts should be lower than 120 meters, and the overall exposure time from the start of decompression should not be longer than 60 seconds.

[0005] However, saturation diving is highly mobile and uncertain in specific applications and does not fully guarantee that it will be performed according to established procedures

When sub-saturation emergency decompression is initiated due to unexpected circumstances, it is possible that the decompression depth and total exposure time have exceeded the applicable range of the heliox conventional diving decompression scheme. Currently, such application scenarios are faced with no suitable decompression scheme available, new calculation methods for emergency decompression schemes are needed to fill technical gaps

In addition, even for emergency decompression within the scope of application of the heliox conventional diving decompression table, certain environmental parameters may deviate from the established procedures due to some uncontrollable factors during the decompression process, or there may be accidents in the middle of decompression. To speed up or slow down the decompression process, it is impossible to continue to use the existing fixed decompression table for decompression, which reduces the decompression efficiency and is contrary to the demand for emergency decompression on decompression efficiency

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