An ultrasonic liquid level detection method

Abstract

The invention discloses an ultrasonic liquid level detection method. Ultrasonic liquid level gauges currently on the market have complex structures, inconvenient use, and low measurement accuracy. The invention relates to an ultrasonic liquid level gauge, comprising a power supply module, a control module, a sensor, an ultrasonic transmitting module, an ultrasonic receiving module, a temperature compensation module and piezoelectric ceramics. The power supply module supplies power to the control module, the ultrasonic transmitting module, the ultrasonic receiving module, the temperature compensation module and the output module through the first voltage regulator, the second voltage regulator, the switching regulator and the ultra-low voltage regulator. The temperature compensation module detects the ambient temperature through the temperature sensor and transmits it to the control module. The control module sends an ultrasonic control signal to the ultrasonic transmitting module through a single-chip microcomputer; the ultrasonic transmitting module boosts the ultrasonic control signal through a high-frequency transformer and transmits it to the piezoelectric ceramic. The invention can avoid the problem of inaccurate measurement caused by the blind area.

Description

technical field [0001] The invention belongs to the technical field of liquid level detection, and in particular relates to an ultrasonic liquid level gauge and a liquid level detection method thereof. Background technique [0002] With the development of science and technology, the solutions of distance measurement technology are becoming more and more diversified, especially the distance measurement technology applied to the measurement of material level. Now the principle of material level measurement is mainly divided into contact type and non-contact type, non-contact type Because of the characteristics of no direct contact with the medium, it is easy to use and has unique advantages in some special working conditions, while the non-contact type is mainly based on the principle of ultrasonic waves. However, the ultrasonic liquid level gauges currently on the market have complex structures, are inconvenient to use, and have low measurement accuracy, so it is difficult to...

AI Technical Summary

Problems solved by technology

However, the ultrasonic liquid level gauges currently on the market are complex in structure, inconvenient to use, and low in measurement accuracy, and it is difficult to meet the needs of the general market.

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