Control system for detecting cut-time of milk coagulation using ultrasonic method

Youxian Wen; Jianyin Liu; Liming Yu; Sundaram Gunasekaran

doi:10.1117/12.156365

22 September 1993 Control system for detecting cut-time of milk coagulation using ultrasonic method

Youxian Wen, Jianyin Liu, Liming Yu, Sundaram Gunasekaran

Proceedings Volume 2101, Measurement Technology and Intelligent Instruments; (1993) https://doi.org/10.1117/12.156365
Event: Measurement Technology and Intelligent Instruments, 1993, Wuhan, China

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.

Citation Download Citation

Youxian Wen, Jianyin Liu, Liming Yu, and Sundaram Gunasekaran "Control system for detecting cut-time of milk coagulation using ultrasonic method", Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993); https://doi.org/10.1117/12.156365

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