The System of Liquid Level Detection

Ya Mei Li; Ping Liang

doi:10.4028/www.scientific.net/AMM.182-183.511

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 182-183The System of Liquid Level Detection

The System of Liquid Level Detection

Abstract:

The design is a ultrasonic level meter based on the PIC18F4520 micro chip. This ultrasonic level meter can be achieved in data is not lost when the power is down, making multi-function button to change the value, accurate measurement of liquid level. Closed loop fixed gain amplifier and the echo peak calibration signal amplification technology eliminates the phase shift error and the amplitude fluctuation error of the method, and digital potentiometers to achieve the system's automatic gain control, improve the quality of the echo signal. The effect of design is good, especially in sewage treatment, and oil storage tank system that can not contact measuring system have a strong value in use.

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Periodical:

Applied Mechanics and Materials (Volumes 182-183)

Pages:

511-514

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.182-183.511

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Online since:

June 2012

Authors:

Ya Mei Li, Ping Liang

Keywords:

LCD, Liquid Level Measurement, PIC18F4520 Microcontroller, Ultrasonic Wave (UW)

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