A flexible system for determining the quality of pharmaceutical products based on characteristics such as, for example, mass, shape, hardness, size, color and surface texture is disclosed herein. The quality determination apparatus includes a feeder assembly for sequentially dropping individual product samples upon an impact transducer arrangement. The impact transducer generates transducer signals indicative of the physical characteristics of each product sample. In addition, an imaging device operates to synthesize a digital image representation of each product sample. The transducer signal and digital image representation corresponding to each product are analyzed so as to determine the appropriate degree of quality to be associated therewith.
US 5,422,831 A
Iowa State University Research Foundation, Inc.
Misra, Manjit K. and Shyy, Yuh Yuan, "Acoustic and video imaging system for quality determination of pharmaceutical products" (1995). Iowa State University Patents. 266.