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With the continuous development of the automobile industry, almost every family has a car, so the car safety issue is gradually highlighted. Driving for a long time produce drowsiness; many owners simply sleep in their car, especially younger children who are more prone to the sense of fatigue. In our live, car asphyxiation accidents caused by high temperature and high concentration of carbon monoxide are very common. The automobile has been integrated into people’s life, and its related demands are more diversified. The automobile industry is about to enter the “post-automobile era”. The problem of the interior safety of automobiles is what we need to solve urgently. It is an important means for people to know the safety problems inside the car correctly and take precautions against them. In this document, the status quo of the automotive interior safety problems are described and analyzed. Based on the actual situation, a sensor-based automotive interior safety alarm system is proposed to promote the development of automobile safety industry.

The aim of the study is to further understand the rule of conversion of bottom hole pressure of a vertical well in a dual-permeability reservoir, which is about the dual permeability under different outer boundary (infinite, close, and constant value) conditions. However, there are few articles dealing with the model of a vertical well in a dual permeability reservoir under these three different outer boundary conditions. Hence, the paper proposes a model of a vertical well in a dual permeability reservoir under three outer boundary conditions. The model is solved with a Laplace space equation. We find the solution to the model that has a similar structure under three different outer boundary conditions by combining it with the similar structure theory. Therefore, we put forward a similar constructing method (SCM) that solves our model. The concrete steps of the SCM are given in this paper. At the same time, we draw the curves of the bottom hole pressure and pressure derivative using the modified Stehfest inversion formula and MATLAB software. In addition, we investigate the evolution of the pressure by changing the parameters (mobility ratio K, storability ratio ω , and crossflow coefficient λ ). The solution to such a reservoir model obtained in this paper could be used as a basis for analyzing other typical reservoirs with vertical wells.

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