Liquid level measuring system based on optical fiber array liquid level sensor, preparation method and use method

Abstract

The invention provides a liquid level measuring system based on an optical fiber array liquid level sensor, a preparation method and a measuring method. The liquid level measuring system comprises an Led panel light source, a container, an optical fiber array liquid level sensor, an optical signal acquisition unit and a data processing unit, wherein an Led panel is used for providing a light source for the optical fiber array liquid level sensor, the optical fiber array liquid level sensor is used for detecting an optical signal reflected and output after light of the Led panel passes through a liquid in the container, the optical signal acquisition unit is used for converting the optical signal into a digital signal and then transmitting the digital signal to the data processing unit, the Led panel light source is reflected after passing through the liquid in the container, after the optical fiber array liquid level sensor detects reflected optical signals, the optical signal acquisition unit and the image processing module of the data processing unit analyze and process digital signals, and finally height information of the liquid level is given. The method is high in anti-interference capability, corrosion-resistant, heat-resistant and high in measurement precision, and the optical fiber array liquid level sensor has the advantages of being convenient to manufacture, wide in application range, low in cost and the like.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to a liquid level measurement system based on an optical fiber array liquid level sensor, a preparation method and a use method. Background technique [0002] Liquid level measurement involves all aspects of industrial and agricultural production and social life, especially in the field of industrial production processes. It not only requires high precision, but also needs to be able to deal with special environmental impacts in industrial scenarios. [0003] Therefore, the measurement of liquid level requires high precision, high stability and real-time online detection. There are many methods for traditional liquid level measurement, such as mechanical float level gauges, but its disadvantage is that the movement of the float may be affected by the transmission mechanism. The influence of dirt accumulated on the surface, interference signal, and failure, and then as ...

AI Technical Summary

Problems solved by technology

The optical fiber Fabry-Perot cavity liquid level sensor cannot perform absolute liquid level measurement, the wavelength demodulation technology of the optical fiber grating liquid level sensor is difficult, and the demodulator is expensive

Moreover, in these two methods, the accuracy of liquid pressure conversion is difficult to guarantee, thus affecting the measurement accuracy

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