A method for locating the leakage source of hazardous chemicals

Abstract

The invention relates to the technical field of hazardous chemical substance leakage source positioning, in particular to a hazardous chemical substance leakage source positioning method. The hazardous chemical substance leakage source positioning method comprises the following steps that A, a coordinate system is established, and the approximate range is determined; B, the particle swarm optimization repeated time number k is set to be 1; C, fixed sensor data are obtained, and the self-adaptation variation particle swarm optimization is adopted for back calculation positioning; D, if back calculation precision is not achieved, the step C is conducted again; E, final convergence judgment is conducted, and if the condition is met, the process is finished; F, resetting of the particle swarmoptimization is conducted, and if the resetting time number reaches the maximum value, the step G is conducted; G, a moving sensor is started and arranged at the initial position; and H, the effectivecollection value of the moving sensor is obtained, if the effective collection value is smaller than the final convergence judgment value, the process is finished, and if the effective collection value is not smaller than the final convergence judgment value, the value is added into fixed sensor data, and skipping to the step B for execution is conducted. The hazardous chemical substance leakagesource positioning method has the substantive effect that a fixed sensor network is combined with the moving sensor, accident information can be effectively obtained, the accident monitoring flexibility is improved, and the density of the fixed sensor network is reduced.

Description

technical field [0001] The invention relates to the technical field of locating leakage sources of hazardous chemicals, in particular to a method for locating leakage sources of hazardous chemicals. Background technique [0002] After a hazardous chemical leakage accident occurs, use monitoring equipment to monitor the concentration of hazardous substances at the accident site and the surrounding environment, and then use the monitored data to determine the location and intensity of the leakage source. After the source intensity information of the leak source is determined, the dynamic distribution of the leaked material in different time and space positions in the atmosphere can be determined, thereby realizing the early warning prediction and emergency treatment of the accident. [0003] At present, there are two types of methods for locating the source of hazardous chemical gas leakage: one is based on probability and statistics theory, and the other is based on optimizat...

AI Technical Summary

Problems solved by technology

For data collection methods based on fixed sensor networks, a large number of fixed sensors need to be arranged to ensure the accuracy of positioning results, which increases the cost

For the data collection method based on mobile sensors, it is mainly completed by the search of robots equipped with olfactory sensors, which has low positioning efficiency and is only suitable for small-scale leakage accidents.

For the data acquisition method based on the combination of fixed sensor network and mobile sensor, the error of the optimization algorithm comes from random error, which causes the path of the mobile sensor to oscillate, which reduces the efficiency

[0004] Chinese patent CN105548476B, published on January 9, 2018, a gas leakage detection method and detection system, related to the field of gas detection technology, used to solve the problem that the existing technology cannot detect the location of the gas leakage source in time

However, its judgment on the leakage source is too dependent on the flight trajectory of the drone, which is not suitable for quickly and accurately predicting the leakage source of hazardous chemicals

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