CN201327415Y

CN201327415Y - Embedded-type image detecting device

Info

Publication number: CN201327415Y
Application number: CNU2008201451094U
Authority: CN
Inventors: 张海顺; 赵永福; 王峻松; 王志为; 徐晓明; 刘恩树; 朱体高
Original assignee: TIANJIN HUAHE TECHNOLOGY Co Ltd
Current assignee: Huahe New Technology Development Company, Research Institute of Physical and Chemical Engineering of Nuclear Industry
Priority date: 2008-12-30
Filing date: 2008-12-30
Publication date: 2009-10-14
Anticipated expiration: 2018-12-30

Abstract

The utility model discloses an embedded-type image detecting device which comprises a feeding system, an image acquisition system, an embedded-type image detecting system, a static memory, a flash memory, an executing mechanism and a man-machine interface. The feeding system comprises a feed bin, a vibrating feeder, a sliding chute and a track-type conveyor; the image acquisition system comprises a camera, a light source and a polyhedral background board; and the embedded-type image detecting system comprises a controlling and scheduling module, a timing control module, an algorithm processing module, a memory management module and a result output module. The embedded-type image detecting device employs the color charge coupled device (CCD) as image sensor and the field programmable gate array (FPGA) as hardware core and integrates multiple techniques such as the system-on-a-programmable-chip (SOPC) technique, the image processing technique and the pattern recognition technique; simplifies the hardware structure; increases the integration degree; reduces the cost and the equipment size; and is easy to be mounted on the on-line quality control system of a production line.

Description

A kind of embedded image pick-up unit

Technical field

The utility model belongs to a kind of image detection device, be specifically related to a kind of can be used for online detection, based on the embedded image pick-up unit of machine vision technique.

Background technology

The product detection technique is all very important for the production and consumption of product, is the important subject in industrial or agricultural field for many years always.The method that adopts machine vision detects the external sort of product, certified products and unacceptable product are distinguished, be important step in the process of producing product, for improve the quality of products, grading is significant.

In On-line Product detection technique, to the collection of product image with handle and become its most important component based on machine vision.Present image collecting device mainly adopts computing machine and image pick-up card or digital signal processor (DSP:Digital Signal Processor) and field programmable gate array modes such as (FPGA:Field Programmable Gate Array).Computing machine and image pick-up card mode are the early stage modes that adopts, and can make full use of the software and hardware resources of computing machine, reduce the research and development difficulty, but its volume are big, cost is high.Along with the development of DSP (Digital Signal Processor digital signal processor) technology, DSP and FPGA are present a kind of main application modes, collection, storage, processing and the transmission of DSP control view data.Though this mode has obtained desirable effect, cost is higher, is difficult to be accepted by market.

Summary of the invention

The utility model proposes for the shortcoming that overcomes the prior art existence, and its objective is provides a kind of built-in real time image pick-up unit.

The technical solution of the utility model is: a kind of embedded image pick-up unit comprises feed system, image capturing system, embedded image detection system, static memory, flash memory, topworks and man-machine interface.Feed system comprises feed bin, is provided with oscillating feeder below feed bin, is provided with chute below oscillating feeder, is provided with pedrail delivering strap below chute.Described image capturing system comprises camera lens, is provided with light source and a polyhedron background board below camera lens; The embedded image detection system comprises control scheduler module, time-sequence control module, algorithm processing module, memory management module and output module as a result.

Light source adopts the high-frequency spectrum white light as light source.

The color touch screen model that man-machine interface adopts is a color touch screen like VT585W or the performance classes.

The utility model with colored CCD as imageing sensor, with FPGA is hardware core, based on technology such as SOPC technique construction light harvesting, Flame Image Process, pattern-recognitions in the embedded image pick-up unit of one, simplified hardware configuration, improve integrated level, reduced cost, reduced the volume of equipment simultaneously, can be installed in easily on the online detection production line of product.

Description of drawings

Fig. 1 is a whole composition frame chart of the present utility model;

Fig. 2 is a structural representation of the present utility model.

Wherein:

1 material system, 2 image capturing systems

3 embedded image detection systems, 4 static memories

5 flash memories, 6 topworkies

7 man-machine interfaces, 21 camera lenses

22 colored CCDs, 23 analog to digital conversion

14 feed bins, 15 oscillating feeders

16 chutes, 19 nozzles

20 travelling belts, 27 light sources

28 background boards, 31 control scheduler modules

32 memory management modules, 33 algorithm processing module

34 time-sequence control modules 35 are output module as a result

Embodiment

With reference to drawings and Examples a kind of embedded image pick-up unit of the present utility model is elaborated:

As shown in Figure 1, 2, a kind of embedded image pick-up unit comprises material system 1, image capturing system 2, embedded image detection system 3, static memory 4, flash memory 5, topworks 6 and man-machine interface 7.

Wherein, material system 1 comprises feed bin 14, is provided with oscillating feeder 15 below feed bin 14, is provided with chute 16 below oscillating feeder 15, is provided with pedrail delivering strap 20 below chute 16.

Image capturing system 2 comprises camera lens 21, camera lens 21 and colorful charge coupled device (colored CCD) 22 becomes one, analog to digital conversion 23 is provided with light source 27 and a polyhedron background board 28 with the analog image information digitalization that colored CCD 22 transmission come below camera lens 21.

Wherein, colored CCD (Charge Coupled Device, charge-coupled image sensor): the semiconductor material by a kind of ISO is made, and photon conversion can be become electric charge, has resolution height, accuracy of identification height, portable characteristics such as strong.

Light source 27 adopts the high-frequency spectrum white light as light source.

Background board 28: under different reference background, the gradation of image value that camera lens 21 gets access to is different with RGB (red, green, orchid) characteristic information value, for satisfying the requirement of sorting different colours, adopting a polyhedron is the reference background plate, the utility model is a hexahedron, and every face scribbles different reference background looks.Polyhedron background board 28 is by control circuit control, and can requiring automatically according to the different material sorting classifying during work, the control background board turns to the different background faceted pebble.

Embedded image detection system 3 comprises control scheduler module 31, memory management module 32, algorithm processing module 33, time-sequence control module 34 and output module 35 as a result.

Wherein control scheduler module 31 and be in charge of and dispatch other module, finish quality testing and evaluation, mainly estimate color, gloss, size, shape, scab of determinand etc. determinand.

Memory management module 32 main management static memory 4 and flash memories 5.Because the limited storage space of FPGA inside, and image data amount is bigger, therefore needs to use chip external memory data cached.The view data that transmits by analog to digital conversion 23 under the FPGA sequential control, store in the static memory 4 stand-by, system acquisition or handle after relevant data can be stored in the flash memory 5.

Algorithm processing module 33 mainly comprises processes such as image rectification, filtering, area-of-interest extraction, eigenwert extraction, analysis and judgement to treatment of picture, at concrete identifying object (as agricultural product such as apple, tomatoes), speed is fast, and is real-time.

Time-sequence control module 34 is functional modules in the field programmable gate array (FPGA), be articulated on the processor through the AVALON bus, be responsible for producing the driving sequential of colored CCD 22 and analog to digital conversion 23, the driving picture signal becomes digital signal through analog to digital conversion after gathering through colored CCD 22.Whole process is carried out under the management of time-sequence control module 32 in order.

Output module 35 control scheduler modules are delivered to topworks 6 and man-machine interface 7 by data communication interface with result as a result, drive topworks 6 and carry out corresponding actions, and man-machine interface 7 is responsible for the relevant information of display image.

Topworks 6 comprises nozzle 19, and nozzle 19 can be designed to the different structure form as required, as the flat structure.

Man-machine interface 7 adopts the color touch screen, is connected with embedded image detection system 3 by signal wire.During sorting, on touch-screen, show the normal material image and the corresponding with it image of picking out material that sub-elect according to different sorting classifying standards.Click different images, can determine to have selected different sorting standards.Simultaneously when sorting work, collect the image of current sorting material through image capturing system 2 after, can on touch-screen, show in real time, be convenient to observe.Color touch screen can be selected color touch screen like VT585W type or the performance classes for use.

The course of work of the present utility model is:

(i) detected material falls into from feed bin 14 on the travelling belt 20 through oscillating feeder 15 vibrations, and is detected one by one on travelling belt 20, detects detected material and whether arrives pickup area;

(ii) determinand arrives desired location, and the light of light source 27 is blocked, and produces a level triggers signal.This signal is sent into embedded image detection system 3, triggers light source 27 exposures, starts whole testing processes such as image acquisition, processing simultaneously.

(iii) under the control of control scheduler module 31, finish quality testing and evaluation, mainly estimate the color, gloss, size, shape, scab of determinand etc., analysis result is delivered to topworks 6 by output module 35 as a result determinand.

(iv) topworks 6 is put into the determinand of different qualities respectively in the different containers by nozzle 19 according to testing result, has promptly realized the hierarchical detection of determinand.

Claims

1, a kind of embedded image pick-up unit, comprise feed system (1), image capturing system (2), embedded image detection system (3), static memory (4), flash memory (5), topworks (6) and man-machine interface (7), feed system (1) comprises feed bin (14), be provided with oscillating feeder (15) in the below of feed bin (14), be provided with chute (16) in the below of oscillating feeder (15), be provided with pedrail delivering strap (20) in the below of chute (16), it is characterized in that: described image capturing system (2) comprises camera lens (21), is provided with a light source (27) and a polyhedron background board (28) in the below of camera lens (21); Embedded image detection system (3) comprises control scheduler module (31), memory management module (32), algorithm processing module (33), time-sequence control module (34) and output module (35) as a result.

2, a kind of embedded image pick-up unit according to claim 1 is characterized in that: light source (27) adopts the high-frequency spectrum white light as light source.

3, a kind of embedded image pick-up unit according to claim 1 is characterized in that: the color touch screen model that man-machine interface (7) adopts is a color touch screen like VT585W or the performance classes.