RP conversion and air quality evaluation

One of the most important issues is indoor air quality in our environment-related. Formaldehyde, ammonia and other toxic substances in interior decoration materials and new furniture is known as a major source of indoor air pollution, indoor air gas into its volatile state. However, it is still using the current measurement tools to accurately estimate a challenge overall air quality. Therefore, the conversion from a region to a point (RP) is developed to evaluate the air quality in this article. Conversion from one area is defined as the first point value. It is the difference between the center and the belief that the threshold interval. In the RP conversion confident interval of the two sensors basic probability function is calculated based on the measurement value sensor of formaldehyde and ammonia sensor. Then, the interval is converted to a particular belief values. After the collision the extent and computing portfolio, the degree of contamination by the maximum probability and belief interval was chosen to represent the results of the integration decision. Compared with the Dempster-Shafer evidential reasoning conversion and weighted fusion method, the experiment proved that the conversion can improve the RP interval faith belief functions separability. In addition, the degree of conflict of evidence greatly reduced, so that the evidential reasoning to proceed.