Architecture of an expert system for ergonomics analysis and design

Abstract

The architecture of a computerized ergonomics expert system (ERGOEX) for ameliorating the conditions of workers at a workplace is described. The purpose of this computer-assisted tool is to transform sets of worker data and working requirements into a specification or description of an artifact, which is capable of producing ergonomic functions. The ergonomic advisor has been developed so as to reach out to both expert and non-expert users, who can thereby take advantage of this novel approach to workplace design without requiring sophisticated computing equipment. Turbo-Pascal has been chosen as language, rather than an expert system shell, or a logic-based language. In realizing the aims of “guidance” and “user friendliness” we have adopted the principle that the expert system must be able to interface with both novice and expert users. The analysis function is represented as hierarchy, workplace structure, environment, and evaluation and failure analysis at the highest level, and further breakdowns at lower levels. The design process is divided into data input, generation of recommendations, critiquing, and referral to sources for basic supplementary information. Relevance to industry The article describes an expert advisory system to be used by Industrial Engineers, Ergonomists, factory personnel and medical staff for analysis, evaluation and design of a workplace. The methodology has been developed for both expert and non-expert practitioners, who can operate the system using an interactive man–computer dialogue.