An ultrasonic liquid level detection method

A liquid level detection and ultrasonic technology, which is applied in the field of ultrasonic liquid level gauge and its liquid level detection, can solve the problems of low measurement accuracy, complex structure and inconvenient use.

Active Publication Date: 2021-02-09
杭州美仪自动化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • An ultrasonic liquid level detection method
  • An ultrasonic liquid level detection method
  • An ultrasonic liquid level detection method

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with accompanying drawing.

[0036] Such as figure 1 As shown, an ultrasonic liquid level gauge includes a power supply module 1 , a control module 2 , a sensor, an ultrasonic transmitting module 3 , an ultrasonic receiving module 4 , a temperature compensation module 5 , an output module 6 and piezoelectric ceramics 7 . The power module 1 converts the externally connected 24V voltage into the control module 2, ultrasonic transmitting module 3, ultrasonic receiving module 4, The temperature compensation module 5 and the output module 6 supply power. The control module 2 transmits the ultrasonic control signal to the ultrasonic transmitting module through the single-chip microcomputer, thereby controlling the transmitting frequency of the ultrasonic transmitting module; The 300V high-voltage alternating current excites the piezoelectric ceramic 7 to generate ultrasonic waves. The ultrasonic receiving...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/296
CPCG01F23/2962
Inventor 徐冬荣磊汪寅波陈定游李山周凯
Owner 杭州美仪自动化有限公司
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