Saturated submersible pressure reduction method and pressure reduction system

Abstract

The invention discloses a saturated diving pressure reduction method and system. The saturated diving pressure reduction method comprises the steps: acquiring the initial pressure reduction depth pressure and the initial environment oxygen partial pressure in a diving pressurization cabin; calculating a first stay station depth pressure; iteratively calculating the partial pressure of the inert gas in the slowest theoretical tissue of the human body at the beginning of the next stop station; iteratively calculating the allowed residence time of the current residence station; repeating the iteration process to obtain the allowable staying time corresponding to all the staying stations in the saturated diving decompression process; 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 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 saturation 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 decompression, and the depth of stay is called decompression stop (or decompression station). 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 the length of s...

AI Technical Summary

Problems solved by technology

[0005] However, the premise used by the existing saturation diving decompression program is that the entire decompression process is carried out in accordance with the operation specified by the decompression program

Once the sudden uncontrollable factors such as the environment and equipment of the diving operation site and the physiological condition of the diver change, causing certain environmental parameters to deviate from the established procedures, or there is a need to speed up or slow down the decompression process during decompression, then It is impossible to continue to use the existing fixed decompression table for decompression, and it is necessary to select a more conservative plan that is closest to the current situation in the decompression table after a safety assessment by a specific professional to ensure decompression safety, reducing decompression efficiency, and may even affect decompression safety

In addition, the environmental parameters during the actual decompression process cannot be completely consistent with the values ​​required by the decompression scheme, so the theoretical process of inert gas desaturation in the human body calculated by using the existing decompression table will be Differs from the actual process of inert gas desaturation in the human body

At the same time, the current saturation diving decompression operations all rely on manual control. During the decompression process of tens to hundreds of hours, the operator needs to check the decompression table to time and decompress hundreds of times at each stop.

Long-term monotonous and repetitive manual operations are prone to errors. Misoperations such as missed decompression and early decompression will affect the efficiency of decompression and even endanger the lives of divers in the cabin.

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