Capacitive sensor for detecting liquid level in pipeline

Abstract

The invention discloses a capacitive sensor for detecting the liquid level in a pipeline, which comprises two symmetrical semi-arc-shaped base bodies, the two base bodies are connected through an elastic hinge, the two base bodies can freely move along the extension direction of the elastic hinge, one end, far away from the elastic hinge, of each base body is provided with a supporting part, and the supporting parts are connected with the elastic hinge. A first sensor is arranged in one supporting part, and a second sensor is arranged in the other supporting part; the capacitive sensor for detecting the liquid level in the pipeline is composed of two parts, one part is the base body with the first sensor and the second sensor, the other part is the signal processor, the base body is independently assembled on the detected pipeline for detection, when pipeline data needs to be read, the signal processor is connected with the base body, and the signal processor is connected with the signal processor. The purpose of reducing the overall weight and size of the sensor is achieved; the position of the base body on the measured pipeline can be easily adjusted, multiple times of measurement are achieved, and the data accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of sensors, and in particular relates to a capacitive sensor for detecting liquid level in a pipeline. Background technique [0002] Capacitive sensors are usually used to detect the level of liquid media in non-metallic walled pipes; traditional capacitive sensor housings are usually designed to be flat in the area of ​​the active surface of the electric field, and the electric field is usually generated by the same flat electrodes, which leads to the The sensor installed at the measurement point of the curved surface area is easy to cause the problem of inaccurate measurement; the KI6000 capacitive sensor, which is widely used in the industry, needs to clamp the detection device on the pipe under test through fixing bolts. The KI6000 capacitive sensor equipped with display components is not only cumbersome to assemble , Large volume and heavy weight, it is easy to loosen the connection due to the influence...

AI Technical Summary

Problems solved by technology

[0002] Capacitive sensors are usually used to detect the liquid level of liquid media in non-metallic walled pipes; traditional capacitive sensor housings are usually designed to be planar in the active surface area of ​​​​the electric field, and the electric field is usually generated by electrodes that are also planar, which leads to the The installation of the sensor on the measuring point of the curved surface area is likely to cause inaccurate measurement; the KI6000 capacitive sensor, which is widely used in the industry, needs to clamp the detection device on the pipeline under test through fixing bolts, and the KI6000 capacitive sensor equipped with display components is not only cumbersome to assemble , large volume and heavy weight, it is easy to loosen the connection due to the influence of its own gravity over time, and it can only measure a single liquid level of the pipeline under test. Multiple measurements need to be disassembled repeatedly, which is very time-consuming

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