DEVELOPMENT OF A NEW DESIGN FILTERING RESPIRATOR FOR MINERS

Abstract

The purpose of the research is to develop a new design of a filtering respirator for conditions of mining enterprises, taking into account the anthropometric parameters of workers’ faces and featuring an improved the sealing line. The optical triangulation method was used to design a 3D model of the respirator face blank based on the determination of the coordinates of key anthropometric points, as well as a Gaussian radial basis function for smoothing and local fitting of the half mask model to the user’s facial topology. A new design of a filtering respirator has been developed, which takes into account the user’s facial anthropometry. The 3D modeling method of the respirator sample was improved by determining the coordinates of key anthropometric points of users’ faces using the optical triangulation method. A process for determining the contact area of the sample with the user’s face was proposed. It was established that as the size of the sample increases, the contact area of the sealing line with the face decreases, which is related to changes in the half mask’s geometry. The scientific novelty lies in improving the respirator design process through the use of the optical triangulation method to design the sample on key anthropometric points as Gaussian radial basis function for local adjustment of the facial topological structure. The practical value consists in developing a process for determining the contact area of the half mask sealing line with the user’s face.