Ergonomics in design using a computer man and conversational graphics

A throe dimensional variable dimensioned computer model of a man has been developed which can be used as a conversational mode design tool. This paper illustrates the use of this model for equipment design, in particular to determine whether controls can be reached and whether equipment dimensions are suitable to match different members of the population. The equipment may be described cither by special purpose or general purpose environmental modelling systems. The modules of the general purpose system may be assembled into a model of the equipment and then evaluated by taking the operator, represented by the computer man, through a typical work sequence. If the dimensions or positions of the modules are unsatisfactory they may be altered conversationally and the new design retested.