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A method and device for identifying material types of spatial objects

A material type and object technology, applied in the field of waste material type identification and classification, can solve the problems that users are vulnerable to harmful radiation, produce toxic substances, and high machine failure rate, achieve excellent identification effect, easy to move and clean, equipment and the effect of low device cost

Inactive Publication Date: 2015-10-21
索普拉有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spectroscopic and laser methods have a relatively high material identification effect, but the investment cost is high
Due to the high failure rate of the machine, very clean materials must be used, and the user is exposed to harmful radiation during the application of the laser method
The hydrocyclone method is characterized by high efficiency, but its biggest disadvantage is that due to the high-speed rotation of the drum, the failure rate is very high
The biggest disadvantage of floatation centrifugation and other methods using chemical solvents is the generation of toxic substances that are harmful to the environment
Even the electrostatic method, which works well and does not require uniform material fragmentation, is limited to dry and clean materials

Method used

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  • A method and device for identifying material types of spatial objects
  • A method and device for identifying material types of spatial objects
  • A method and device for identifying material types of spatial objects

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0049] Outer packaging and packaging waste identification for PET and HDPE materials

[0050] a) The structure of the device

[0051] According to an embodiment of the present invention, the device is composed of a deformation cavity K, a mechanical deformation system F and an electroacoustic transducer 1, and the electroacoustic transducer 1 is a loudspeaker placed in the deformation cavity F and Connected to the component 2 for recording acoustic signals, the component 2 for acoustic signals is connected to the data processing unit, the data processing unit is a computer 3, and the acoustic signal model obtained based on the multi-material model object analysis is installed on the computer 3. In this example, if figure 2 As shown, the mechanical deformation system consists of a crusher CR. In this embodiment, the crusher comprises a drive whose solid faceplate presses the objects to the sides of the deformation chamber K. The device is equipped with a feeding mechanism P...

example 2

[0061] Recognition of PS and PVC objects

[0062] In the embodiment of the present invention, the structural composition of the device is as described in Example 1, the only difference is that it is equipped with a wet deformation chamber K. The establishment of the model is also as described in Example 1, the difference is that the acoustic signal models of PS and PVC objects are established, and the number of PS and PVC objects is 1000 respectively. The selected and calculated parameters of the acoustic signal are also different, the acoustic signal is generated during the breaking of the object, and these parameters are not unfamiliar to professionals. When building the model, two parameters specific to PS and PVC are selected: spectral flatness SFM and spectral slope. The model is tested on 115 PS objects and 90 PVC objects. Figure 5 Displays the results of model testing. According to this model, in Figure 5 In the diagram of , all points below the line represent PVC...

example 3

[0064] Identification of aluminum objects in cans and outer packaging and plastic packaging waste

[0065] In the embodiment of the present invention, the structural composition of the device is the same as that described in Example 1, and the method for establishing the acoustic signal model is also the same as in Example 1. The only difference is that the model objects include 1000 pop-can objects and 1000 plastic ( PET, HDPE, LEPE, PP, PS and PVC) objects, and calculate the acoustic signal parameters of the acoustic signal generated during the breaking of objects, and select a set of different parameter values ​​from the parameters, this set of parameter values ​​is for professionals. Not unfamiliar. When building the model, select two characteristic parameters of the test object group from the calculation parameters: the third-order normal central spectral moment--signal spectrum skewness Muc3 and the first-order normal spectral moment-power spectrum centroid Mu1. The mod...

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Abstract

The present invention relates to a method for identifying material types of spatial objects characterized in that the method comprising obtaining an acoustic signal from each identified object by deforming the objects mechanically, recording said acoustic signal and comparing it to an acoustic model being obtained on the basis of analysis of reference objects of multiple material types. The present invention also relates to a device for identifying material types of spatial objects, comprising a deformation chamber (K), a mechanical deformation system (F), at least one electro-acoustic transducer (1), an acoustic signal recording assembly (2) and a data processing unit (3) with installed acoustic model, being obtained on the basis of analysis of reference objects of multiple material types.

Description

technical field [0001] The invention relates to a material type identification method and device for space objects, especially plastic waste. The present invention can identify various material types of objects, such as plastic, glass, metal, cardboard, wood, various plastic stools composed of chemical groups or additives of polymers or copolymers, in order to determine and control the properties of these objects material quality. Specifically, the present invention is a method and device for identifying and classifying types of waste materials. Background technique [0002] In the prior art, material type identification methods involve various techniques, such as spectroscopic studies, laser emission, hydrocyclone, electrostatic interaction, and floating centrifugation, or are based on examining centrifuges. Existing methods have many drawbacks and limitations. Spectroscopic and laser methods have a relatively high material identification effect, but the investment costs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/14B07C5/34G01N29/44
CPCG01N29/04B07C5/34G01D5/12G01N29/14G01N29/4409G01N33/442G01N2291/0235G01N2291/101
Inventor 托马斯·布洛赫格热戈日·戈尔奇察库巴·沃帕特卡依沃娜·葛巴斯
Owner 索普拉有限责任公司
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