CN202649127U

CN202649127U - Automatic optical detection system

Info

Publication number: CN202649127U
Application number: CN 201220276344
Authority: CN
Inventors: 刘树成; 李国强; 吴广强
Original assignee: SHENZHEN QIANGHUA TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: SHENZHEN QIANGHUA TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2012-06-12
Filing date: 2012-06-12
Publication date: 2013-01-02
Anticipated expiration: 2022-06-12

Abstract

The utility model discloses an automatic optical detection system which comprises a precise working table, a motion controlling module, an image acquisition module, a light source module and a computer, wherein the motion controlling module, the image acquisition module and the light source module are respectively connected with the precise working table; and the motion controlling module, the image acquisition module and the light source module are respectively connected with the computer. The motion controlling module comprises a motion controller an X servo motor and a Y servo motor. The image acquisition module comprises an area array charge coupled device (CCD) camera, a lens and an image acquisition card. The light source module comprises a tricolor light source and a light source controller. According to the automatic optical detection system, the working table is highly precise, the motion of a printed circuit board (PCB) is coordinated through an X axis and a Y axis, and therefore the accuracy and the high speed of image acquisition are improved. Due to the fact that a high light red, green and blue (RGB) tricolor light source and the area array CCD camera are adopted, the colors of solder paste, devices and the PCB are distinguished, and therefore a high-definition and easy-to-inspect image can be acquired at high speed.

Description

Automatic optical detecting system

Technical field

The utility model relates to automated optical detection technique field, relates in particular to a kind of automatic optical detecting system.

Background technology

At present, automatic optical detecting system is the image data (generally being converted into digitized view data) that obtains object by optical instrument, then the template with standard compares and analyzes with preordering method, image data is tested and judged, automatic optical detecting system can be used for PCB surface mount production line and replace the manual detection method, the SMT quality is detected, can detect SMT Short Item, counter-rotating, skew, wrong part, tin is many, tin is few etc.Especially micro devices and IC surface mount quality are carried out repeatedly, efficiently, objectively detect, adopt automatic optical detecting system, greatly improved product quality and production efficiency.But existing automatic optical detecting system image definition is low, detection speed slow, detection is unstable etc., causes existing automatic optical detecting system detection efficiency extremely low.

The utility model content

For the weak point that exists in the above-mentioned technology, the utility model provides the automatic optical detecting system that a kind of image acquisition speed is fast, image definition is high, accuracy of detection is high and detection efficiency is high.

For achieving the above object, the utility model provides a kind of automatic optical detecting system, comprises precision stage, motion-control module, image capture module, light source module and computing machine; Described motion-control module, described image capture module and the light source module of being connected are connected with described precision stage respectively, and described motion-control module, image capture module and the light source module of being connected are connected with computing machine respectively.

Wherein, described motion-control module comprises motion controller, X servomotor and Y servomotor; Described motion controller respectively with described X servomotor be connected the Y servomotor and be connected, described X servomotor be connected the Y servomotor and be connected with described precision stage respectively, described motion controller is connected with described computing machine by pci bus.

Wherein, described image capture module comprises area array CCD camera, camera lens and image pick-up card; Described precision stage, described camera lens and the area array CCD camera of being connected are connected successively with described image pick-up card, and described image pick-up card is connected with described computing machine by pci bus.

Wherein, described light source module comprises three-color light source and light source controller; Described three-color light source is connected with described light source controller, and described three-color light source is connected with described precision stage, and described light source controller connects with described computing machine by the RS232 serial ports and is connected.

The beneficial effects of the utility model are: compared with prior art, the automatic optical detecting system that the utility model provides adopts high-accuracy worktable, coordinates the pcb board motion by the XY axle, has improved accuracy and the high speed of image acquisition; Image capture module adopts area array CCD camera, light source module adopts high brightness RGB three-color light source, high brightness RGB three colour circle shape light sources and high resolving power area array CCD form imaging system, set up illuminator by the combination of rgb light source, the color of tin cream is separated with the color of device and the color of pcb board, realize the image that obtains high definition and be easy to detect at a high speed.

Description of drawings

Fig. 1 is the structural drawing of automatic optical detecting system of the present utility model;

Fig. 2 is the block scheme of automatic optical detecting system of the present utility model;

Fig. 3 is that the foundation of automatic optical detecting system of the present utility model detects contrast thumbnail process flow diagram;

Fig. 4 is system's overhaul flow chart of automatic optical detecting system of the present utility model.

Embodiment

In order more clearly to explain the utility model, below in conjunction with accompanying drawing the utility model is done to describe further.

See also Fig. 1, the automatic optical detecting system that the utility model provides comprises precision stage 1, motion-control module 2, image capture module 3, light source module 5 and computing machine 4; Motion-control module 2, image capture module 3 are connected with light source module and are connected with precision stage 1 respectively, and motion-control module 2, image capture module 3 are connected with light source module and are connected with computing machine 4 respectively.

See also Fig. 2, motion-control module 2 comprises motion controller 21, X servomotor 22 and Y servomotor 23; Motion controller 21 is connected with the Y servomotor with X servomotor 22 respectively and is connected, and X servomotor 22 is connected with the Y servomotor and is connected with precision stage 1 respectively, and motion controller 21 is connected with computing machine 4 by pci bus;

Image capture module 3 comprises area array CCD camera 32, camera lens 31 and image pick-up card 33; Precision stage 1, camera lens 31 are connected with area array CCD camera and are connected successively with image pick-up card 33, and image pick-up card 33 is connected with computing machine 4 by pci bus;

Light source module 5 comprises three-color light source 51 and light source controller 52; Three-color light source 51 is connected with light source controller 52, and three-color light source 51 is connected with precision stage 1, and light source controller 52 connects with computing machine 4 by the RS232 serial ports and is connected.

See also Fig. 3 and Fig. 4, the flow process of detection comprises that setting up detection contrast thumbnail detects template with setting up:

The flow process of setting up the examination criteria template is: at first prepare a qualified pcb board, carry out image scanning, reference point is set, if cad data is arranged, directly input cad data, the Connection Element storehouse generates the MARK point and needs surveyed area; If there is not cad data, through human-edited MARK point and need surveyed area, adjust at last and optimize MARK point and need surveyed area, set up to detect and contrast thumbnail;

Setting up detection template flow process is: be positioned on the precision stage pcb board to be detected also fixing, the XY axle of coordinating pcb board by X servomotor and the Y servomotor of motion controller control moves, deliver to the camera watch region of CCD, area array CCD camera is captured image, the PCB picture signal that collects enters computing machine by image pick-up card, when worktable moves to next detection pcb board, completed image is processed, then compare with the standard form image, process and judgement, find out the defective of PCB mounting board, and automatically preserve type and the position coordinates of defective, generate defect file, show testing result by display simultaneously, wait for that the operator further confirms.

Advantage of the present utility model is:

1) by high-accuracy worktable and kinetic control system, when guaranteeing the worktable static accuracy, possesses superior dynamic response characteristic, for realizing that High-speed Image Acquisition lays the foundation;

2) image capture module comprises the high resolving power area array CCD camera, light source module comprises high brightness RGB three-color light source, set up illuminator by rgb light source and area array CCD camera combination, tin cream and device and pcb board three's color are separated, realize obtaining at a high speed the target that high definition is easy to detected image;

3) by detecting contrast, processing and the judgement of template and standard form, realize various PCB are mounted the inspection of mass defect intelligence, diagnosis algorithm and software system development thereof, improve system's detection speed and Stability and veracity;

Above disclosed only be several specific embodiment of the present utility model, but the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.

Claims

1. an automatic optical detecting system is characterized in that, comprises precision stage, motion-control module, image capture module, light source module and computing machine; Described motion-control module, described image capture module and the light source module of being connected are connected with described precision stage respectively, and described motion-control module, image capture module and the light source module of being connected are connected with computing machine respectively.

2. automatic optical detecting system according to claim 1 is characterized in that, described motion-control module comprises motion controller, X servomotor and Y servomotor; Described motion controller respectively with described X servomotor be connected the Y servomotor and be connected, described X servomotor be connected the Y servomotor and be connected with described precision stage respectively, described motion controller is connected with described computing machine by pci bus.

3. automatic optical detecting system according to claim 1 and 2 is characterized in that, described image capture module comprises area array CCD camera, camera lens and image pick-up card; Described precision stage, described camera lens and the area array CCD camera of being connected are connected successively with described image pick-up card, and described image pick-up card is connected with described computing machine by pci bus.

4. automatic optical detecting system according to claim 3 is characterized in that, described light source module comprises three-color light source and light source controller; Described three-color light source is connected with described light source controller, and described three-color light source is connected with described precision stage, and described light source controller connects with described computing machine by the RS232 serial ports and is connected.