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Hot casting measuring method and device based on compressed sensing algorithm

A technology of compressed sensing and measurement device, which is applied in measurement device, optical device, instrument, etc., and can solve problems such as inability to obtain images

Active Publication Date: 2019-08-06
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for measuring hot castings based on compressed sensing algorithm, so as to solve the problem that the correct image cannot be obtained in the prior art

Method used

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  • Hot casting measuring method and device based on compressed sensing algorithm
  • Hot casting measuring method and device based on compressed sensing algorithm

Examples

Experimental program
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Embodiment 1

[0027] Such as Figure 1-Figure 3 As shown, this embodiment includes a photoelectric sensor 1, a placement platform 4 and a grid baffle, and the grid baffle is made of asbestos net or other high temperature resistant materials. The high temperature resistance refers to the temperature resistance above 800 degrees. The structure of the asbestos net 2 is a square grid structure, the size of each grid is d, 50% of the grids are fixed with shading baffles, and the distribution of shading baffles is distributed according to the random vector generated by the computer, which is generated by the computer and storage. The light emitted by the hot casting 3 to be tested cannot pass through the shading baffle, but can only pass through the grid without the shading baffle on the asbestos mesh 2 . In order to ensure the measurement accuracy of the device, the size of the square grid should be smaller than the measurement accuracy requirements. At the same time, the distance between the...

Embodiment 2

[0052] Such as figure 1 figure 2 and Figure 4 As shown, this embodiment includes a photoelectric sensor 1, a placement table 4, a baffle 6 and a grid baffle, and the baffle 6 and the grid baffle are made of asbestos net or other high temperature resistant materials. The high temperature resistance refers to the temperature resistance above 800 degrees. The baffle plate 6 is fixed on the placement platform 4, and the left end of the hot casting 3 is fixed on the placement platform 4. The hot casting 3 is placed on the placement table 4, and both sides of the placement table 4 are fixed with support motors 5, and the asbestos net 2 is connected between the support motors 5 on both sides of the placement table 4, and the rotation of the support motor 5 drives the asbestos net 2 on both sides. Two-way movement between two supporting motors 5, the photoelectric sensor 1 is fixed on the top of the asbestos net 2, the photoelectric sensor 1 can receive the light source informati...

Embodiment 3

[0077] Such as figure 2 , image 3 , Figure 5 and Figure 6 As shown, this embodiment includes a photoelectric sensor 1, a lower transmission device 8, an upper transmission device 7 and a grid baffle, and the grid baffle is made of asbestos net or other high temperature resistant materials. The high temperature resistance refers to the temperature resistance above 800 degrees. The structure of the asbestos net 2 is a square grid structure, the size of each grid is d, 50% of the grids are fixed with shading baffles, and the distribution of shading baffles is distributed according to the random vector generated by the computer, which is generated by the computer and storage. The light emitted by the hot casting 3 to be tested cannot pass through the shading baffle, but can only pass through the grid without the shading baffle on the asbestos mesh 2 . In order to ensure the measurement accuracy of the device, the size of the square grid should be smaller than the measurem...

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Abstract

The invention discloses a hot casting measuring method and device based on a compressed sensing algorithm. The method comprises the following steps of step1, obtaining a complete optical signal of a part to be tested of a tested hot casting, and converting the obtained optical signal into an electrical signal; step2, converting the electrical signal into an electrical signal matrix, and simplifying the electrical signal matrix into an equation; step3, solving an electrical signal equation through a compressed sensing algorithm to obtain a vector C; step4, restoring the obtained vector C to a two-dimensional grid matrix according to a principle of a row priority, and acquiring image information of the part to be tested of the tested hot casting; and step5, obtaining size information of thepart to be tested of the tested hot casting according to the image information of the part to be tested of the tested hot casting. Through measuring the hot casting under shielded high-temperature-resistant asbestosed wire gauze multiple times and combining the compression sensing algorithm, the measurement information of the complete hot casting is acquired, and a shape of the tested hot castingcan be accurately obtained.

Description

technical field [0001] The invention relates to the technical field of hot casting measurement, in particular to a hot casting measurement method and device based on a compressed sensing algorithm. Background technique [0002] When metal castings are first cast, the temperature is very high, which can reach 800 degrees. At this time, it is difficult to measure its size. Manual measurement is used, and the working environment is poor, and workers cannot work for a long time. Using a contact sensor to measure, due to high temperature, the sensor will be inaccurate and its life will be shortened. In the method of image capture, the temperature of the nearby air increases due to the high temperature of the casting to be tested, which causes the refractive index of the air to light to change, resulting in deformation of the captured image, and the correct image cannot be obtained. Contents of the invention [0003] The object of the present invention is to provide a method a...

Claims

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Application Information

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IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 张健魏峘何睿清余辉龙赵静覃翠刘伟伟
Owner NANJING INST OF TECH
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