A detector and method for detecting microbending of metal deep holes
A detection method and detector technology, applied in the field of optical detection, can solve the problems of cumbersome detection, complex structure, low precision, etc., and achieve the effect of simple demodulation circuit, high detection precision and low cost
Active Publication Date: 2021-08-17
YANSHAN UNIV
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[0004] In response to the above problems, the object of the present invention is to provide a detector and method for detecting microbends in metal deep holes that solve the problems of complex structure, cumbersome detection, high cost, and low precision by using the F-P interference principle detection method
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[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
[0023] It should be noted that in the description of the present invention, the terms "upper", "lower", "top", "bottom", "side", "other side", "left", "right" etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplification of the description, and does not mean that devices or elements must have a specific orientation, be constructed and operated in a s...
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The invention relates to a detector and a method for detecting microbends in metal deep holes. The detector includes a sensor assembly, an optical switch connected to the input end of the sensor assembly, and a circulator connected to the input end of the optical switch. The input of the circulator A broadband light source is connected to one end of the circulator, the other output end of the circulator is connected to the input end of the coupler, and the output end of the coupler is respectively connected to the input ends of the optical power meter and the demodulator. The detection method proposed by the present invention adopts the principle of F-P interference, wherein the end face of the optical fiber and the inner wall of the metal deep hole form an F-P cavity structure, and the relationship between the F-P cavity length and the free spectral width is demodulated by using the peak detection method, The distance between the inner wall of the metal deep hole and the sensor detector is determined, and the accuracy can reach the order of μm, which can accurately determine the degree and position of the microbending of the metal deep hole, and has a very ideal technical effect.
Description
technical field [0001] The invention relates to the technical field of optical detection, in particular to a detector and a method for detecting microbends in metal deep holes. Background technique [0002] In recent years, with the continuous advancement of science and technology, people have put forward higher requirements for the precision of devices. Metal deep holes are widely used in military industry, machinery, aerospace, petrochemical and other fields, but metal deep holes are prone to micro-deformation in the processing of metal deep holes due to the limitation of pore size and process level. Most of the deep-hole micro-deformation detection equipment at this stage can achieve an accuracy of 10 μm, which is difficult to meet the detection requirements of μm. Aiming at the above problems, the present invention develops a novel high-precision detector that utilizes optical detection technology to realize micro-deformation detection of metal deep holes. [0003] In ...
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IPC IPC(8): G01B11/16
CPCG01B11/161
Inventor 齐跃峰宫宸博王楠楠王一晴刘燕燕
Owner YANSHAN UNIV