Detection of foreign bodies in processed food and drinking by means of ultrasound

Detection of foreign bodies in food and drinking products play an important role in quality assurance and customers satisfaction. There are many approaches to detect and identification of foreign bodies (FBs) which each one has advantages and disadvantages. However ultrasound-based measurement ways have showed potential in various food processing applications, such as concentration gauging, flow measurement, level detection, food shelf life monitoring, food properties assessment and FBs detection. The basis of ultrasound diagnosis and FBs detection is transmitting ultrasound waves to tested canned food and drink with specific frequency and power, then returned signals processing and analyzing. Ultrasound is non-destructive and does not spoil foods physically or hygienically. Ultrasound approach can be very useful when other approaches such optical approach is not possible.