CN203242023U - Image-based sheet total number counting apparatus - Google Patents

Abstract

The utility model relates to an image-based sheet total number counting apparatus, which solves the problems of low efficiencies, time consuming, and poor accuracy in sheet counting in the prior art. The apparatus includes an image acquisition unit for realization of image acquisition of a sheet end face, and a computer for realizing image data saving, image processing and result output after the acquisition of the image acquisition unit. The apparatus is simple in structure, and can efficiently and accurately count the sheets.

Description

Image-based thin plate sum statistic device

Technical field

The utility model belongs to photoelectric detecting technology, is specifically related to a kind of total image-based thin plate sum statistic device of the reflective thin material of end face (such as sheet metal, plank, paper etc.) that can be used for measuring stacked placement.

Background technology

Along with the rising of human cost, the work of workpiece accurate metering will be replaced by the automatic measurement method gradually by the mode of artificial statistics.The thin material of stacked placement often quantity is larger, and is not easy to counting.May reach 600 such as a stacked plate quantity, it will be extremely low manually carrying out counting efficiency, and easily make mistakes.This is for the user, and obtaining of thin material quantity information will depend on the numerical value that institute adds up and demarcates when packing.This will have a strong impact on the validity of the materials allocating of pipelining in the thin material use procedure.For example, in the enterprise of pursuing modern industry " zero inventory management " pattern, if because the actual thin plate quantity of using is less than given numerical value (this is probably out in the cold in thin plate manufacturing enterprise packing link), then will affect the manufacturing schedule of this streamline.Therefore, the quantity of the thin material after the stacked packing of accurate metering how? being not only the responsibility that thin material manufacturing enterprise guarantees product quality, also is that thin material uses enterprise to ensure the effective measures of High-efficient Production.

At present, thin plate processing enterprise often adopts the method for machinery that the quantity of thin plate in the process is added up, and namely the thin plate before stacking is counted one by one, and the thin plate that stacks is added up obtains sum at last.But there is certain defect in actual applications in the method, as there is the extraction of partition, defective thin plate etc. in the process that stacks, may cause the whole quantity that stacks thin plate inconsistent with counting.And for the method that adopts two dimensional image analysis, be subject to the impact of resolution,, be difficult to realize that the binaryzation of thin plate and slit is divided in the image, and further have influence on the accuracy that image is processed about 1mm or the skimble-scamble thin plate that stacks of end face color for single thickness.

Summary of the invention

The purpose of this utility model is in order to solve the problems of the technologies described above, to provide a kind of simple in structure, can be efficiently, the image-based thin plate sum statistic device accurately thin plate counted.

Technical scheme comprises image acquisition units, is used for realization to the collection of thin plate end view drawing picture; And be used for realizing the view data after the image acquisition units collection is preserved and the processing of image and result's output computing machine.

Described image acquisition units comprises a line array CCD that is connected with data processing unit, and one is used for blocking the shell of extraneous parasitic light, a support that is used for the lighting source of illumination thin plate end face and is used for supporting line array CCD.

Described shell comprises the stationary fixture that is sleeved on outside the line array CCD and the shading sleeve that is connected with stationary fixture, and described shading sleeve is corresponding with line array CCD.

Described shading sleeve is flat-shaped triangle, and its drift angle is the slot corresponding with line array CCD, the bottom surface be can be corresponding with thin plate wide mouthful.

Described lighting source is the wide cut parallel light source that a plurality of directional lights form.

Described lighting source is installed in the Kuan Kouchu of shading sleeve.

Described support is the Liftable type support.

Line array CCD connects computing machine through bus, but the view data that piched battle CCD gathers and is kept in the computing machine is carried out filtering processing, Threshold segmentation, Fourier transform and feature extraction, by the cycle of fluctuation of analysis image gradation data and the feature of data, calculate the light plate of publishing picture and neatly stack quantity.

With extraneous parasitic light, avoid extraneous parasitic light on the impact of imaging data by the shading sleeve, flat-shaped leg-of-mutton profile is conducive to the line array CCD view field imaging; Simultaneously, the Kuan Kouchu in the shading sleeve installs one group of lighting source with directional light of realizing the wide cut illumination additional, and lighting source shines the thin plate end face and can pass through the line array CCD lens imaging to the line array CCD image planes.

Described support height is adjustable, guarantee that line array CCD and thin plate center are high consistent, can guarantee that all thin plates can both be imaged in the line array CCD, the structure that realizes described lifting type support has multiple, as adopting the A-frame form that connects by link rod, realize highly regulating by stretching tripod connecting rod, also can adopt other version that satisfies the line array CCD VTOL (vertical take off and landing).

The utility model compared with prior art has the following advantages:

(1) thin plate that stacks be can align and total number directly measurement and counting carried out, time saving and energy saving, realized noncontacting measurement and counting, be specially adapted to 1-600 is opened thickness greater than the total counting number that neatly stacks thin plate of 0.5mm.

(2) measuring process is finished automatic measurement and data by computing machine and is processed, and measuring speed is fast, can solve that indistinguishable, the efficient of artificially counting existence are low, the easy deficiency such as make mistakes.

(3) utilize the design of shell at utmost to avoid extraneous parasitic light on the impact of imaging data, be beneficial to and obtain accurately view data, improve the reliability of system with accurate.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model image-based thin plate sum statistic device.

Fig. 2 is that steel plate (thickness is that 1mm/ opens) neatly stacks the local picture of rear end face, and wherein, vertical line has partly been illustrated the data area that line array CCD gathers.Fig. 3 is the profile schematic diagram of shading sleeve.

Fig. 4 is the structural representation of lifting type support.

Wherein, 1-thin plate layer, 2-shading sleeve, the wide mouth of 2.1-, 2.2-slot, 3-stationary fixture, the CCD of 4-front, 5-lifting type support, 5.1-triangular coupling rod, 5.2-A-frame, 6-computing machine, 7-lighting source.

Embodiment

Below in conjunction with accompanying drawing the utility model is further explained explanation:

With reference to Fig. 1, as shown in Figure 1, line array CCD 4 is fixed on the lifting type support 5, line array CCD 4 imaging directions are perpendicular to the plane of thin plate layer 1 in the time of fixedly; Shell comprises outer stationary fixture 3 and the shading sleeve 2 of the suit CCD4 of front, described shading sleeve 2 links to each other with support 5 by stationary fixture 3, and keep relatively fixing, lifting type support 5 can be designed to the form of three-legged support 5.2, three connecting rods of its three supports and tripod connecting rod 5.1 are hinged respectively, can realize by stretching tripod connecting rod 5.1 the height adjusting of lifting type support 5, specifically as shown in Figure 4; Shading sleeve 2 is designed to flat-shaped triangle according to the line array CCD imaging viewing field, as shown in Figure 3, and the slot 2.2 that its drift angle can dock with line array CCD 4, the bottom surface is rectangle for wide mouthful of its cross section of 2.1(that can be corresponding with thin plate).Lighting source 7 also is equipped with at its wide mouthful 2.1 places, and described lighting source 7 be the wide cut parallel light source that a plurality of directional lights form, and is vertically mounted on the side inwall at wide mouth 2.1 places of shading sleeve 2.For system succinctly convenient, line array CCD 4 by bus be that computing machine 6 links to each other.

Principle of work:

Measure beginning, computing machine 6 gathers the end view drawing picture of a width of cloth thin plate layer 1 by bus line control battle array CCD4, and gained end view drawing picture is the gradation of image data of two perpendicular line directions as shown in Figure 2, can be saved in the computing machine 6 by an array; The piched battle CCD4 image that gathers and be kept in the computing machine 6 carries out filtering processing, Threshold segmentation, Fourier transform and feature extraction again, by the cycle of fluctuation of analysis image gradation data and the feature of data, calculates the light plate of publishing picture and neatly stacks quantity.

Described filtering is used for the smoothed image data, reduces fluctuation within a narrow range to the impact of data, improves the efficient of subsequent treatment.Algorithm is as follows:

$Q\left(i\right)=\mathrm{Med}(p(i-k)...,p\left(i\right),...p(i+k)),---\left(1\right),$

Wherein, p (i) is the gray-scale value of image, and Q (i) is filtered result, and Med () is filtering method, the filter length of 2k for selecting in this filtering method.

Described Threshold segmentation is realized the removal of CCD noise signal, and algorithm is as follows:

$\left\{\begin{array}{c}Q\left(i\right)=Q\left(i\right),Q\left(i\right)>\mathrm{threshold}\\ Q\left(i\right)=0,Q\left(i\right)<\mathrm{threshold}\end{array}\right.,---\left(2\right)$

Wherein, threshold is the threshold value of cutting apart.

Described Fourier transform for the vibration frequency of extracting the gradation of image data, obtains the first step period that reflects that thin plate and slit alternately occur.Algorithm is as follows:

$F\left(i\right)=\mathrm{FFT}\left(Q\right),---\left(3\right),$

Wherein, FFT () is the fourier transform algorithm of one-dimensional vector, the various fourier spectras of F (i) for returning.

Described feature extraction, the first step period that namely alternately occurs according to the thin plate of formula (3) gained and slit, and the gradation data of image mated and judge calculates in the image total number of thin layer in the real thin plate layer 1.

Method of operating:

Before measuring beginning, select the comparatively neat end face of thin plate layer 1 of stacked placement, with the wide mouthful 2.1 neat end face near thin plate layer 1 of shading sleeve 2, regulate the height of lifting support 5, make line array CCD 4 high consistent with the center of thin plate layer 1, guarantee that namely all thin plates can both be imaged in the line array CCD 4.Measure beginning, computing machine 6 control linear array CCD4 gather the end view drawing picture of a width of cloth thin plate layer 1, and gained end view drawing picture is the gradation of image data of red line 1.1 directions as shown in Figure 2, can be saved in the computing machine 6 by an array; Finished again calculating and the analysis of data by computing machine 6, the total quantity of thin plate in the thin plate layer 1 that is finally neatly stacked.

Claims (7)

1. an image-based thin plate sum statistic device is characterized in that, comprises image acquisition units, is used for realization to the collection of thin plate end view drawing picture; And be used for realizing the view data after the image acquisition units collection is preserved and the processing of image and result's output computing machine.

2. image-based thin plate as claimed in claim 1 sum statistic device, it is characterized in that, described image acquisition units comprises a line array CCD that is connected with data processing unit, and one is used for blocking the shell of extraneous parasitic light, a support that is used for the lighting source of illumination thin plate end face and is used for supporting line array CCD.

3. image-based thin plate sum statistic device as claimed in claim 2 is characterized in that, described shell comprises the stationary fixture that is sleeved on outside the line array CCD and the shading sleeve that is connected with stationary fixture, and described shading sleeve is corresponding with line array CCD.

4. image-based thin plate as claimed in claim 3 sum statistic device is characterized in that, described shading sleeve is flat-shaped triangle, and its drift angle be the slot corresponding with line array CCD, the bottom surface be can be corresponding with thin plate wide mouth.

5. such as each described image-based thin plate sum statistic device of claim 2-4, it is characterized in that, described lighting source is the wide cut parallel light source that a plurality of directional lights form.

6. image-based thin plate sum statistic device as claimed in claim 4 is characterized in that, described lighting source is installed in the Kuan Kouchu of shading sleeve.

7. such as each described image-based thin plate sum statistic device of claim 2-4, it is characterized in that, described support is the Liftable type support.

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