Poisonous gas leakage source-locating method based on wireless sensor network

Abstract

The invention provides a poisonous gas leakage source-locating method based on a wireless sensor network. The poisonous gas leakage source-locating method is characterized in that the poisonous gas leakage source-locating method includes the following steps: firstly, a plurality of sensors are arranged in an area to be detected so as to fully cover the area, and the data of the sensors are transmitted via the wireless network; then, when poisonous gas is leaked, parameters are recorded at different states according to the alarm sequence of the sensors, and according to the parameters, the coordinates of a leakage source leaking the poisonous gas are worked out. The method provided by the invention can locate poisonous gas leakage sources, analyzes the spread and motion of a mass of gas respectively in combination with a turbulence model and a Gaussian model in microscopic and macroscopic views, and also introduces a key influencing factor - wind.

Description

technical field [0001] The invention relates to a method for locating poisonous gas leakage sources based on a wireless sensor network, which collects gas information at the initial stage of gas leakage through a sensor array to realize wireless transmission of gas leakage information and real-time positioning of gas leakage points. Background technique [0002] With the continuous development of industry, there are more and more large-scale factories, and the government also prefers to arrange enterprises belonging to a certain type in one area. Relying on this area, build a large and mature society around it to facilitate the employees working in this area and meet their living needs. For areas where chemical production enterprises gather, one of the biggest threats is the possible leakage of toxic gas from a certain enterprise in the park. Once a toxic gas leak occurs in a certain enterprise in the park, it is often difficult to locate where the leak occurred. Because t...

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Problems solved by technology

Once a toxic gas leak occurs in a certain enterprise in the park, it is often difficult to locate where the leak occurred

Because the park is often very large, and the enterprises gathered are of the same or similar type, which brings difficulties to the follow-up work

Once it cannot be organized, the spread of toxic gas will cause fatal hazards to the surrounding living areas

However, at present, in the theory of poisonous gas diffusion, the most widely used prediction model is the Gaussian model, but the Gaussian model can only solve the problem of concentration prediction in the downwind direction after the poisonous gas leaks, and cannot solve the location of the leak source very well.

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