Research Of An Expert System For Evaluating The Indoor Environment

People have the time more than 80% to be in indoor, indoor environmental quality that can directly affect Life quality and the health of people.Evaluating indoor environment efficiently and scienctific to become the hot point that people study. With develop of expert system, it offer people a new research tool and a new thought for solve complex environment problem. This paper with indoor environment as research content, make more detailed exposition from hot comfortable environment, hearing environment, visual environment and air quality aspects for the physical pollution, chemical pollution, biological pollution and radioactive pollution that affects indoor environment. The major problem of indoor environment is indoor air quality. This paper has determined with air quality comprehensive evaluating index.This system can help people make evaluation fast for indoor air quality, and the result for evaluation gives reasonable explaination.The research method of this paper is technique of the artificial intelligent technology of producing expert system based on rule. Indoor environmental corresponding relation has studied systematicly, indoor environment evaluation expert system has established, expert system of development way based on the inference of CLIPS and technical and Delphi database technology. System includes data input modular, appraisement inference modular, evaluation result export modular and rule editor modular. System database and fact base will each other, when evaluation data to be input into database, on the one hand system can treat with data in database , at the same time the fact also will corresponding with slot of fact list, preparing for system inference. The change of database field content will influence the slot in fact list. With consider of characteristic of indoor Pollution and influence of the health of human body by excessive pollutive factor value.under the foundation of environmental quality evaluation technique, apply the concept of the indoor air evalation of quality to pollute the comprehensive evaluation index of factor, reflect the influence of indoor air contaminant for the health of human body. Useing SQL calculates for indoor air quality index, useing inference for the reason of causing air quality change. At the same time, system can watch fact, rule, activation and other aspect for the course of inference. Eule base editor modular can let user look over rules existed in rule base and also operate rules with edit, add, delete.This expert system has adopted various computer technology, it is simple and convenient and interface is operated friendly, systematic fact base and rule base are easy to modify, expand and maintenance.Developing indoor environmental evaluation expert system with the inference technology based on rule have important theoretical signification , and that can raise the practicality of system greatly, Offer excellent expert knowledge is key.