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Proceedings Paper

Control system for detecting cut-time of milk coagulation using ultrasonic method
Author(s): Youxian Wen; Jianyin Liu; Liming Yu; Sundaram Gunasekaran
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Paper Abstract

The research developed new and non-destructive method to detect the cutting time of milk coagulation. The system used for estimating cut-time of milk coagulation consisted of a high frequency signal generator transmitter and receiver transducers computerized data acquisition and control executive circuits. When input signal frequency equals to the inherent frequency of the ultrasonic transducer-milk coagulation system the output signal of the receiver transducer is the same frequency sine wave as that of the emit transducer and only different on their amplitude. The RMS. to DC conversion designed converted the high frequency signal into dc signal so that the computer can process easily it. The whole control system was operated by running designed EASYEST program and the clotting time(turning point) and cutting time(cutting point) was determined automatically. The experiments running the control system in laboratory produced positive correlation between the attenuation of ultrasonic signal and the physical property of milk coagulation.

Paper Details

Date Published: 22 September 1993
PDF: 6 pages
Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993); doi: 10.1117/12.156365
Show Author Affiliations
Youxian Wen, Huazhong Agricultural Univ. (China)
Jianyin Liu, Huazhong Agricultural Univ. (China)
Liming Yu, Huazhong Agricultural Univ. (China)
Sundaram Gunasekaran, Univ. of Wisconsin/Madison (United States)

Published in SPIE Proceedings Vol. 2101:
Measurement Technology and Intelligent Instruments
Li Zhu, Editor(s)

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