Hole diameter measuring method based on staggered combination of laser trigonometry displacement sensors

A technology of displacement sensor and laser triangulation, which is applied in the direction of measuring devices, instruments, optical devices, etc., to achieve the effect of increasing the measuring range

Inactive Publication Date: 2015-07-15
TIANJIN UNIV
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Problems solved by technology

However, when we dock two laser displacement sensors to measure the aperture, the size of the measur

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  • Hole diameter measuring method based on staggered combination of laser trigonometry displacement sensors
  • Hole diameter measuring method based on staggered combination of laser trigonometry displacement sensors
  • Hole diameter measuring method based on staggered combination of laser trigonometry displacement sensors

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Embodiment Construction

[0019] An aperture measurement method based on laser triangulation and dislocation combination of displacement sensors of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

[0020] Such as figure 1 As shown, what we see is a schematic diagram of the working range of the laser triangulation displacement sensor. Each laser triangulation displacement sensor has its own working distance, that is, the working center distance l mid and scope of work. These two parameters are important parameters of the laser triangulation displacement sensor, which restrict the hole measurement capability of the entire laser displacement sensor hole measurement system. Wherein, the working range mentioned is the farthest working distance l max The closest distance to work l min the distance between.

[0021] A method for measuring aperture based on laser triangulation displacement sensor dislocation combination of the present...

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Abstract

A hole diameter measuring method based on staggered combination of laser trigonometry displacement sensors comprises steps as follows: two laser trigonometry displacement sensors are adopted and assembled in a parallel-staggered manner to form a measuring system; in a measuring range of the measuring system, the measuring system is arranged on one side in a to-be-measured hole, that is, the measuring system is located in a semicircle of the to-be-measured hole; measuring is started as follows: the measuring system is moved to another semicircle of the to-be-measured hole in the direction perpendicular to emergent rays of the laser trigonometry displacement sensors, and continuous sampling and recording are performed in the movement process; the maximum value of the sum of measuring values of the laser trigonometry displacement sensors at the same moment during continuous sampling is taken and is substituted into a formula for the hole diameter of the to-be-measured hole, and the diameter of the to-be-measured hole is obtained. Problems in the prior art are solved, and the measuring range of the whole measuring system is greatly enlarged through staggered placement of the double laser trigonometry displacement sensors, so that a smaller hole diameter can be measured with the method.

Description

technical field [0001] The invention relates to a method for measuring an aperture. In particular, it relates to an aperture measurement method based on a dislocation combination of laser triangulation displacement sensors for non-contact distance measurement. Background technique [0002] In the invention patent application with publication number 103278100.A, an aperture measurement method based on a combination of non-contact distance measurement sensors is announced. This invention patent application proposes a method for measuring the aperture that can be directly operated in real time by the spindle of the processing machine tool. Since the method is based on a non-contact measuring sensor, good safety can be obtained when used on-board. An important implementation condition of this method is that, in the given case of the invention, the two measurement lines of the two sensors must be strictly collinear. See the original text in the abstract of the announcement "Wh...

Claims

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Application Information

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IPC IPC(8): G01B11/12
Inventor 付鲁华刘尧夫王磊李兴强吴翔宇
Owner TIANJIN UNIV
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