Rotating angle detection method for rotating object and sensor therefor

Abstract

Disclosed is a method for detecting rotary body angle and a sensing device. The inventive detecting method comprises: between luminous body and optoelectronic receiver connected with external circuit being positioned a barrier, which blocks light transmission between luminous body and optoelectronic receiver by rotating with the rotary body and stopping at the blocking point; detecting corresponding rotary angle according to the character signal output by the external circuit. The rotary sensing device having a cylinder shell, in the shell body being positioned a luminous body and an optoelectronic receiver connected with external circuit, between the luminous body and the optoelectronic receiver being positioned a barrier which rotates with a rotary body and blocks light projected by the luminous body by blocking the optoelectronic receiver. The inventive sensing device has the advantages of withstanding high moisture and high voltage, of withstanding hot corrosion and vibratory impulse.

Description

technical field [0001] The invention relates to a sensing technology, in particular to a method for detecting the rotation angle of a rotating object and a rotation angle sensor designed by the method. Background technique [0002] At present, in the fields of oil drilling, geological drilling and trenchless pipeline laying, directional drilling technology has been increasingly widely used. A notable feature of directional drilling is that the drilling trajectory is not required to be a straight line, and curved drilling can be realized. Therefore, it can bypass various obstacles such as houses, rivers, pipelines, etc. according to actual requirements. The guiding function of directional drilling is accomplished by the inclined drilling tool. When the drilling tool is rotating and feeding, a straight hole will be drilled to achieve straight drilling; when the drilling tool is only feeding but not rotating, due to The resistance of the inclin...

AI Technical Summary

Problems solved by technology

However, the sensors designed by the above methods have the following disadvantages: large size, complex structure, and difficult manufacturing process; most of them are workshop operations, requiring a lot of manual debugging, not suitable for mass production, and high cost; not all solid state, dynamic range Narrow, and low impact and vibration resistance

The measurement of the rotation angle can also be carried out by using an inertial device such as an accelerometer, but due to the use of an electronic chip sensitive to acceleration, its vibration resistance, temperature resistance, reliability, etc. are far from meeting the requirements of the underground drilling environment

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