Design of Ultrasonic Processing Circuits in Borehole Sediment Thickness Measurement

Abstract:

The ultrasonic technique is a new method for detecting the borehole sediment thickness and has been gradually developed in recent years. However, there are still several key technologies needing to be further studied and developed. This paper focuses on studying and designing the ultrasonic processing circuits including the mono-stable flip-flop circuit, the driving circuit, the amplification filtering circuit and the automatic gain control circuit. Under the environment of Multisim10.0, the designed circuits are simulated. The results show that the deigned ultrasonic driving circuit has a strong driving capacity and is capable of completely meeting the bandwidth requirements in measuring the sediment thickness by ultrasonic. The automatic gain control circuit is capable of strengthening the ultrasonic signal in a time varying mode so that the output signal can be kept stable within the given range. So it has a significant effect on the ultrasonic measurement of sediment; the designed amplification, filter bandwidth and the quality value can all meet the system requirements. Meanwhile, the integrated filter is adopted and few peripheral components are used, therefore, the system design is greatly simplified.

• Periodical: Applied Mechanics and Materials (Volumes 416-417)
• Pages: 549-553
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.416-417.549
• Online since: September 2013
• Authors: Di Fan, Yan Gao, Qin Guang Cai
• Keywords: Chebyshev Filter, Pile Foundation Borehole, Sediment Thickness Measurement, Time Varying Gain Control, Ultrasonic Processing Circuits

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