PURPOSE: To identify noteworthy process parameter of a production process having a plurality of parameters by utilizing a computer.
CONSTITUTION: In order to appropriately discriminate parameters related to the production of nonconformable products, the productivity deterioration of conformable products, or the deterioration of other production efficiencies without largely increasing the human labor in a production process having a plurality of parameters, a process monitoring device 10 is constituted of a real-time statistic analyzer 24 which analyzes a selected process variable related to a production process by conducting one to a plurality of statistic analyses, a terminal 30 which displays a process variable when the variable is deviated from one of a plurality of reference values, a means which discriminates all processes which cause the deviation of the variable from the reference values, and a means which displays the statistic history of the discriminated process variable while the operation of the production process and real-time statistic analysis are made freely continuable.
DEBUITSUDO JIEI REIDEN
TOOMASU EE PEASON
| JPS62255053A | 1987-11-06 |