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Detection method for vehicle tail gas purification filter open-cell rate

A technology for purifying filters and automobile exhaust. It is applied in measuring devices, scientific instruments, permeability/surface area analysis, etc. It can solve the problems that the detection results are not easy to be accurate, time-consuming and labor-intensive, and achieve increased production efficiency, detection speed, and automation. high effect

Inactive Publication Date: 2015-09-16
蒋大成
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is greatly influenced by manual experience factors, which is not only time-consuming and laborious, but also the detection results are not easy to be accurate.

Method used

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  • Detection method for vehicle tail gas purification filter open-cell rate
  • Detection method for vehicle tail gas purification filter open-cell rate
  • Detection method for vehicle tail gas purification filter open-cell rate

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Embodiment Construction

[0029] The detection method of the automobile exhaust purification filter, the exhaust purification filter has a structure of honeycomb coal, fine pores and a catalyst attached to the inner wall, comprising the following steps:

[0030] Step 1: If figure 1 , figure 2 As shown, place the purification filter 3 horizontally and fix it, use the light source 1 and the beam expander collimator assembly 2 to generate parallel light, and let the parallel light shine on the side of the purification filter 3 in a direction parallel to the through hole of the purification filter 3 .

[0031] Step 2: Cover the other side of the purification filter 3 with a layer of ground glass 4 , and the ground glass 4 should be close to the purification filter 3 .

[0032] Step 3: Use the CCD camera 5 to convert the bright and dark spots on the frosted glass 4 into digital images and store them in the industrial computer 6 . The number of pixels of the digital image is 100-200 times the number of t...

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Abstract

The invention relates to a detection method for the vehicle tail gas purification filter open-cell rate. The detection method is characterized in that: the bright spots of filter holes are imaged through parallel light and ground glass, and the vehicle tail gas purification filter open-cell rate can be accurately detected through a series of image processing algorithms. According to the present invention, compared with the traditional manual detection method with the low efficiency, the method of the present invention based on the tail gas purification filter with the honeycomb briquette-like and fine pore structure and widely used in the current vehicles has the following characteristics that: the accuracy and the detection efficiency are substantially improved, and due to the high automation degree, the detection method can further be used in large-scale production pipeline.

Description

technical field [0001] The invention relates to a method for detecting whether the through-porosity of an automobile exhaust purification filter is qualified. Background technique [0002] As we all know, the impact of automobile exhaust on the environment is huge. Among various pollution sources, automobile exhaust has become an important source of air pollution. Therefore, the purification and filtration technology of automobile exhaust has developed rapidly. [0003] A kind of purification filter widely used in automobiles at present, its structure is honeycomb coal shape, and the pores are extremely fine and dense. When the automobile exhaust flows through the purification filter, the exhaust gas is in extensive contact with the catalyst attached to the wall of the purification filter, and the toxic and harmful gases can be catalyzed and reacted into non-toxic and harmless gases. [0004] However, due to the limitation of the manufacturing process, some channels will ...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 蒋大成
Owner 蒋大成