TW201518709A - Electrical control method for light sources that reduces mechanism operating times of defect inspection machine and size measuring machine - Google Patents

Abstract

An electrical control method for light sources that reduces mechanism operating times of a defect inspection machine and a size measuring machine is disclosed. The method controls the photographing locations of a CCD camera by a control card and outputs photographing pulses to the CCD camera so the camera sends out pulse signals to a pulse sorting circuit during exposure time. The pulse sorting circuit provides sorted pulses according to the number of light source control circuits and returns the start point and cycles in sequence after the last light source control circuit is reached. Upon receiving a pulse signal, the light source control circuit adjusts the width and the amplitude of the pulse signal according to preset lighting time and lighting intensity of a control light source. The adjusted pulse signal is then sent to a light source module. As a result, a multiple sets of image data of different light sources can be obtained at the same location of an inspection workpiece during one check circle of the mechanism, which reduces repeated and time-consuming operations of resetting light source modules and thus improves the overall inspecting speed.

Description

Light source electronic control method capable of reducing the number of operations of the inspection machine and the size measuring machine

The invention relates to a light source electronic control method capable of reducing the operation times of the flaw detector and the size measuring machine mechanism, in particular, a plurality of sets of different condition light source modules in the field of view when walking by the CCD camera In order to operate, with the CCD camera to take images, let the organization cycle through the investigation, in the same position, get the electronic control of the image data of multiple sets of different light sources.

瑕疵 inspection machine or dimension measuring machine, which is to fix the object to be tested on the machine table, a longitudinal sliding rail is arranged on each side of the machine platform, and a horizontal sliding rail is arranged on the two longitudinal sliding rails to make the horizontal The slide rail can be driven by the motor to move along the longitudinal slide rail; the horizontal slide rail is provided with an optical scale, and a CCD camera movable along the transverse slide rail is disposed, and the CCD camera is provided with a light source, the machine Under the stage, there is a light source. By controlling the vertical and horizontal slides, the CCD camera is moved to check whether the object to be tested has a defect or a measure. In order to obtain various image data for clear display of the size or size, when capturing images in a CCD camera, it is usually necessary to take image data of different light source intensities, or obtain RGB (red, green, blue light source) from 3-4 pixels. Data, merged into the same color pixel. However, when the inspection machine is inspected and taken, the CCD camera can only be moved to a designated position for detection, or when the CCD camera is mounted for full-range inspection during travel, the same power source is turned on, and the image is set according to the CCD field of view. In order to achieve the full range of inspections, if you want to take different light source images, or different light source intensity of the same light source, you need to reset the light source to allow the mechanism to repeat the operation once, which not only takes time and manpower, but also can not get better analysis. Image data of degree.

Therefore, the inventor deeply feels that there are still many defects in the operation and control methods of the light source of the traditional inspection machine and the size measurement machine. The experience of the product design and manufacture of the product has been continuously studied for many years. Improvements have been made to create a light source electronic control method that can reduce the number of operations of the inspection machine and the size measuring machine.

The main design object of the present invention is to provide a plurality of sets of different condition light sources in the field of view during the walk-through of a CCD camera during the walk-through inspection of the CCD camera. The modules operate in sequence, with the CCD camera taking images, allowing the organization to cycle through the inspections, and obtain image data of multiple sets of different light sources in the same position, without having to repeatedly set the light source module and the CCD camera to check the mode of electricity. Control method.

Another design object of the present invention to provide a light source electronic control method capable of reducing the number of operations of the inspection machine and the size measuring mechanism is to provide a structure in which the main body of the inspection machine and the size measuring machine are not required to be changed. The method of electronic control, while reducing the number of operations of the equipment and improving the resolution.

(1)‧‧‧Check machine body

(11) (11') ‧ ‧ longitudinal rails

(12)‧‧‧Horizontal slides

(121)‧‧‧ optical ruler

(13)‧‧‧Motor

(2) ‧‧‧CCD camera

(3) ‧‧‧Light source module

(4) ‧ ‧ control card

(5) ‧‧‧ pulse wave sequencing circuit

(6) ‧‧‧Light source control circuit

The invention is further described in detail below with reference to the drawings and embodiments.

The first figure is a perspective view of the body of the present invention, "a light source electronic control method capable of reducing the number of operations of the inspection machine and the size measuring machine."

The second drawing is a schematic flow chart of the present invention "a light source electronic control method capable of reducing the number of operations of the inspection machine and the size measuring machine."

The third figure is a schematic diagram of the light source image capturing method of the present invention, which is a light source electronic control method capable of reducing the number of operations of the inspection machine and the size measuring machine.

The invention relates to a light source electronic control method capable of reducing the number of operations of the flaw detector and the size measuring machine mechanism, wherein the object to be tested is placed on the machine body of the inspection machine (1), and both sides of the machine are fixed. A longitudinal slide rail (11) (11') is respectively arranged, and a transverse slide rail (12) is arranged on the two longitudinal slide rails (11) (11'), so that the transverse slide rail (12) can be driven by a motor (13) driving along the longitudinal slide rail (11) (11'); the horizontal slide rail (12) is provided with an optical scale (121), and is provided with a CCD camera movable along the transverse slide rail ( 2) The CCD camera (2) and the machine stand are respectively provided with a light source module (3). By controlling the longitudinal and lateral slide rails, the CCD camera (2) can be moved to check whether the object to be tested has瑕疵 or measure its size, as shown in the first figure.

The inspection machine is controlled by the control card (4), the pulse wave sequence circuit (5) and the light source control circuit (6) to obtain a plurality of different groups at the same position of the object to be tested under one cycle inspection. The image data of the light source is controlled as follows: (a) planning the image capturing position of the CCD camera (2) with the control card (4), and immediately outputting the image pulse wave to the CCD when the CCD camera (2) moves to the designated position. The camera (2); (b) the CCD camera (2) receives the image pulse wave, and the camera sends the pulse wave signal to the pulse wave sequence circuit (5) at the same time during exposure; (c) the pulse wave sequence circuit ( 5) receiving the pulse wave signal, providing the sequence according to the number of the light source control circuit (6), and sending the first pulse wave signal to the light source control circuit 1 in sequence, and the second pulse wave signal is sent to the light source control circuit 2.... After the number of light source control circuits, return to the first group starting point, sequentially receive the reset signal in sequence, forcing the sorting circuit to assign a heavy head to start; (d) the light source control circuit (6) receives When the pulse signal is controlled, according to the determined lighting source lighting time and lighting intensity, the pulse signal width and amplitude are adjusted to the light source module (3); (e) The light source module (3) controls the lighting pulse wave according to the light source control circuit (6).

The connection mode between the light source control circuit and the light source module can be divided into that all light source control circuits control the same light source module or one light source control circuit controls a set of light source modules, but during the lighting of the same light source module, Only one source control circuit controller can be accepted, as shown in the second figure.

The operation principle of the invention is mainly that when the CCD camera (2) is inspected, multiple sets of different condition light source modules (3) are sequentially operated in the field of view, and the CCD camera (2) is used for image capture, so that the mechanism can be cycled once. After checking, in the same position, the image data of different sets of different light sources are obtained, and the resetting of the light source module (3) is repeated for time-consuming action, and the overall inspection speed is improved. In addition, the electronic control method enables the CCD camera (2) to obtain image data of different light sources (RGB) at the same pixel position, and the same pixel can obtain better resolution without repeating the setting of the light source module. (3) and CCD camera (2) walk mode, and then merge into the same color pixel, as shown in the third figure.

(2) ‧‧‧CCD camera

(3) ‧‧‧Light source module

(4) ‧ ‧ control card

(5) ‧‧‧ pulse wave sequencing circuit

(6) ‧‧‧Light source control circuit

Claims (2)

The utility model relates to a light source electronic control method capable of reducing the operation times of the defect inspection machine and the size measurement machine mechanism, wherein the object to be tested is fixed on the machine body machine table, and a longitudinal slide rail is respectively arranged on both sides of the machine platform, and the two longitudinal directions are respectively A horizontal slide rail is disposed on the slide rail, so that the horizontal slide rail can be moved along the longitudinal slide rail by the motor; the horizontal slide rail is provided with an optical scale, and a horizontal slide rail is disposed to move along the horizontal slide rail The CCD camera, the CCD camera and the machine stand are respectively provided with a light source module, and by controlling the vertical and horizontal slide rails, the CCD camera can be moved to check whether the object to be tested has a defect or measure the size thereof. The device obtains image data of multiple sets of different light sources at the same position of the object to be tested by the control card, the pulse wave sequence circuit and the light source control circuit. The control method is as follows: : (a) plan the image capturing position of the CCD camera with the control card, and when the CCD camera moves through the specified position, immediately output the image pulse wave to the CCD camera; (b) the CCD camera receives the image pulse wave, and when the camera is exposed, Sent at the same time The wave signal is sent to the pulse wave sequence circuit; (c) the pulse wave sequence circuit receives the pulse wave signal, provides a sequence according to the number of the light source control circuits, and sends the first pulse wave signal to the light source control circuit 1 in sequence, After the second pulse wave signal is sent to the light source control circuit 2.... to the number of the light source control circuit, it returns to the first group starting point, and sequentially receives the reset signal in sequence, forcing the sorting circuit to dispatch the heavy head to start; (d) When receiving the pulse signal, the light source control circuit adjusts the pulse signal width and amplitude to the light source module according to the determined lighting source lighting time and the lighting intensity; (e) the light source module depends on the light source The control circuit controls the lighting pulse wave. The invention can reduce the defect inspection machine and the size measuring machine mechanism as described in claim 1 The light source electronic control mode of operation times, wherein the connection mode of the light source control circuit and the light source module can be divided into all light source control circuits to control the same light source module or one light source control circuit to control a set of light source modules However, during the lighting of the same light source module, only one light source control circuit controller can be accepted.