An Aperture Measurement Method Based on Laser Triangulation Displacement Sensor Displacement Combination
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: 2018-01-12
TIANJIN UNIV
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However, when we dock two laser displacement sensors to measure the aperture, the size of the measured aperture is limited by the volume of the sensor itself and the minimum working distance parameters
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[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] like 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 in...
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An aperture measurement method based on the dislocation combination of laser triangulation displacement sensors: two laser triangulation displacement sensors are assembled in parallel and dislocated to form a measurement system; within the measurement range of the measurement system, the measurement system is placed on one side of the measured aperture , that is, within a semicircle of the measured hole; start measurement: move the measurement system to the other semicircle of the measured hole in the direction perpendicular to the outgoing line of the laser triangulation displacement sensor, and continuously sample and record during the movement ; In continuous sampling, take the maximum value of the sum of the measured values of two laser triangulation displacement sensors at the same moment, and bring it into the measured aperture formula to obtain the measured hole diameter. The present invention overcomes the problems existing in the prior art, and greatly increases the measurement range of the entire measurement system by using the dislocation arrangement of the dual laser triangulation displacement sensors, so that smaller apertures can also be measured by this 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...
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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