Counting type variable-pitch grating displacement sensor

A technology of variable grating pitch grating and displacement sensor, applied in the field of displacement sensor, can solve the problems of spectral change, constant displacement, change of incident light angle, etc.

Inactive Publication Date: 2021-04-27
BEIJING INFORMATION SCI & TECH UNIV
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Problems solved by technology

[0004] However, in the existing technology, when the guide rail has an angle pitch due to its own accuracy, it will cause a change in the angle of the incid...

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  • Counting type variable-pitch grating displacement sensor

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Embodiment Construction

[0020] The objects and functions of the present invention and methods for achieving the objects and functions will be clarified by referring to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The essence of the description is only to help those skilled in the relevant art comprehensively understand the specific details of the present invention.

[0021] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0022] A counting variable pitch grating displacement sensor with double mirrors, including a sensor housing 6 and a collimating optical system 7, one side of the collimating optical system 7 corresponds to the first mirror 11 on the slider 5, and the slider 8 is L Type, one outer side is ...

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Abstract

The invention relates to a counting type variable-pitch grating displacement sensor. The sensor comprises a collimation optical system and a Y-shaped optical fiber, wherein the collimation optical system is arranged in the sensor, the Y-shaped optical fiber penetrates into the sensor and is opposite to one side of the collimation optical system, a guide rail is arranged in a sensor shell, and a sliding block is arranged on the guide rail in a sliding mode through a connecting shaft; a reflecting mirror opposite to the other side of the collimating optical system is arranged on the inner side of the sliding part, and a variable-pitch grating opposite to the reflecting mirror is arranged at the bottom end in the sensor. The counting type variable-pitch grating displacement sensor is advantaged in that the counting type variable-pitch grating displacement sensor is provided, overall precision of the sensor is improved, the requirement for the guide rail machining precision is lowered, and applicability of the device is improved.

Description

technical field [0001] The invention relates to the field of electromagnetic interference-resistant displacement sensors, in particular to a counting variable grating pitch grating displacement sensor. Background technique [0002] At the end of the last century, the United States and other western developed countries first proposed several research plans for advanced components of the optical transmission system. Some large companies became contractors of the research project and developed several optical displacement sensors with different principles, some of which were obtained in the laboratory. Verification, some have passed related experiments. Many units in China have also carried out research in this area, among which the displacement sensor with counting variable pitch structure has passed the experiment of the principle prototype. The sensor of this principle can also be used in areas with strong electromagnetic fields in industrial production, replacing the exist...

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Application Information

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IPC IPC(8): G01B11/02G02B5/08
CPCG01B11/02G02B5/08
Inventor 祝连庆努尔兰牛海莎董明利李红何巍张钰民
Owner BEIJING INFORMATION SCI & TECH UNIV
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