A continuous emission monitoring system for a manufacturing plant (10) includes a control system (16) which has associated therewith a virtual sensor network (18). The network (18) is a predictive network that receives as inputs both control values to the plant (10) and also sensor values. The network...http://www.google.co.uk/patents/US5386373?utm_source=gb-gplus-sharePatent US5386373 - Virtual continuous emission monitoring system with sensor validation
