TWI719742B - Detection Systems - Google Patents

Abstract

The present invention is a detection system, which includes a light source device arranged around a detection device to illuminate the detection device, wherein the light source device includes a lamp holder provided with at least one substrate, and a plurality of rows of light-emitting elements are arranged on the substrate. A diffuser plate is further provided on the seat to cover the substrate and a plurality of light-emitting elements. A control device is connected to the detection device and the substrate to control the detection device and all the light-emitting elements to emit light, or to control a plurality of rows of light-emitting elements to emit light at intervals, so that the light source emitted by the plurality of light-emitting elements presents a striped light source. The invention can provide an omnidirectional light source, and the light source can be presented in a striped manner, can avoid excessive reflection of the object to be measured, and can improve the accuracy of detection.

Description

Detection Systems

The present invention relates to a detection technology, in particular to a detection system that can provide good lighting.

In the past, traditional manufacturers could only manually select and inspect the products one by one when inspecting whether the products shipped from the factory are defective. However, this inspection method is not only time-consuming, but also a lot of manpower. With the rapid development of science and technology and the continuous advancement of science and technology, the use of optics for product inspection technology has begun to be developed. This technology is to use back-end equipment or managers to directly inspect the image after the image of the product is captured by a camera, which can effectively reduce Time of inspection.

Generally, a device structure that uses images to detect an object to be tested includes a viewing base, and a fixed light-emitting device and a camera are arranged above the viewing base. During the inspection, the manager places the test object on the viewing stand, and operates the light-emitting device to illuminate the test object, and then operates the camera to shoot the image of the test object to generate the test image for the manager to judge the status of the test object. The disadvantage is that the light-emitting device is only set at a fixed position, so that the irradiation surface of the light source is relatively incomplete, and the camera and the viewing stand are both fixed. When detecting the object to be tested, the camera or the object to be tested cannot be arbitrarily rotated, making the detection It is easy to detect dead corners, and the detection effect is not good.

Furthermore, if the surface of the object to be measured is a highly reflective metal surface, under the light of a general light-emitting device, even if the surface of the object to be measured has abnormal depressions, it will reflect back high-brightness light, causing management The person cannot observe the abnormal dents on the surface, and thus misses the defects of the product.

In view of this, the present invention addresses the shortcomings of the above-mentioned conventional technologies and proposes a detection system to effectively overcome the above-mentioned problems.

The main purpose of the present invention is to provide a detection system, which can surround the object to be tested with a light source to provide a omni-directional light source, and the light source is presented in stripes, which can prevent the light from being improperly reflected by the object to be tested, and can improve The accuracy of detection.

Another object of the present invention is to provide a detection system that can effectively detect various angles of the object to be tested and avoid blind spots.

To achieve the above objective, the present invention provides a detection system including a detection device and a light source device connected to a control device, wherein the light source device is surrounded by the detection device to illuminate the detection device. The structure of the lamp source device includes a lamp holder, at least one substrate is arranged in the lamp holder, and a plurality of rows of light-emitting elements are arranged on the substrate, and a diffuser plate is arranged on the lamp holder to cover the substrate and the plurality of light-emitting elements; control device It is used to control the operation of the detection device and all the light-emitting elements to emit light, or to control a plurality of rows of light-emitting elements to emit light at intervals, so that the light source emitted by the plurality of light-emitting elements presents a striped light source.

The light source device is a semicircular light source device to surround the detection device.

The detection system further includes a light source device on one side, which is opposite to the other end of the light source device, and is connected to the control device to receive control light emission from the control device.

The detection device further includes a mobile device connected to the control device. The mobile device can hold an object to be tested and rotate the object to be tested according to the control of the control device; a photographing device is connected to the control device and receives the control of the control device to shoot different angles At least one detection image of the object to be tested, and the detection image is transmitted to the control device; an illumination device is arranged on the lens side of the photographing device, connected to the control device, and receives the control of the control device to provide a light source.

The detection device further includes a fixed frame for setting an object to be measured; a moving device is connected to the control device, and the moving device can hold a photographing device. According to the control of the control device, the moving photographing device is along the edge of the object to be measured. To shoot at least one detection image, the photography device is also connected to the control device, so that the photography device can transmit the detection image to the control device; an illumination device is arranged on the lens side of the photography device, and is connected to the control device, and receives the control of the control device. Provide light source.

Detailed descriptions are given below by specific embodiments, so that it will be easier to understand the purpose, technical content, features, and effects of the present invention.

The present invention provides a detection system, which can provide omnidirectional light sources, and the light sources can be presented in a striped manner, which can avoid excessive reflection of the object to be tested, so as to improve the detection accuracy, and can detect various angles of the object to be tested , To avoid detecting blind spots.

Please refer to the first to third figures to explain in detail how the structure of the detection system 1 of the present invention achieves the above-mentioned effects. The detection system 1 includes a detection device 10, a light source device 20, a side light source device 29, and a control device 30. The control device 30 may be a computer device, which is electrically connected to and controls the detection device 10, the light source device 20, and the side light source device 29. The detection device 10 is a device that provides images of the object to be measured, and the image taken by the detection device 10 can be provided to the control device 30 to perform detection of the object to be measured. The light source device 20 is mounted on a frame 21. The light source device 20 can provide surrounding equidistant light sources. The preferred light source device 20 can be a semicircular light source device with a detection device 10 around it, thereby achieving no dead spots. In the illumination detection device 10, the purpose of the object to be tested is to provide a light source for detection. The side light source device 29 is arranged on the frame 21 and opposite to the other end of the light source device 20 to assist the light source device 20 to provide additional light sources.

Please refer to the third figure. The light source device 20 includes a lamp holder 22. The lamp holder 22 is provided with at least one substrate 24 which can be a circuit board, and a plurality of rows of light-emitting elements 26 are arranged on the substrate 24. The light-emitting elements 26 can be For light-emitting diodes, such as white light-emitting diodes, the lamp holder 22 is further provided with a diffuser 28 to cover the substrate 24 and the plurality of light-emitting elements 26; the substrate 24 in the lamp holder 22 is electrically connected to the control device 30 to control The device 30 can control all the light-emitting elements 26 on the substrate 24 to emit light, or only control a plurality of rows of light-emitting elements 26 to emit light at intervals, so that the light source emitted by the plurality of light-emitting elements 26 appears as a striped light source, thereby reducing brightness.

Next, please refer to the first and second figures to illustrate the structure of the detection device 10. The detection device 10 includes a mobile device 12 and a photographing device 14. Both the mobile device 12 and the photographing device 14 are electrically connected to the control device 30 and receive The control device 30 is controlled. The mobile device 12 of this embodiment is a robotic arm for holding a test object 40. The control device 30 can control the mobile device 12 to move and rotate the angle of the test object 40; the mobile device 12 is equipped with There is a light projector 122 which is electrically connected to and receives the control switch of the control device 30. After the light projector 122 is turned on, the light projector 122 can aim at the object 40 to be measured and move along with the object 40 to be measured. The photographing device 14 is used to photograph the image of the object 40, and the lens side of the photographing device 14 is further provided with an illuminating device 142, which is connected to and receives the control of the control device 30, and the illuminating device 142 can provide a light source to the photographing device 14Carry out image shooting. During the detection, the control device 30 controls the mobile device 12 to rotate the test object 40, and at the same time, the control device 30 controls the photographing device 14 to take multiple detection images of the test object 40 with different viewing angles, and then transmits the detection images to the control device 30 , The control device 30 is allowed to automatically determine whether the test object 40 in the inspection image has a defect and meets the product factory standard, or the control device 30 provides the inspection image to the manager, and the manager makes a manual judgment on the inspection image.

Next, please refer to the second figure, the fourth figure A, the fourth figure B, the fifth figure A and the fifth figure B to illustrate the influence of the light state of the light source device 20 on the detected image. This embodiment exemplifies that the test object 40 is a material with high reflectivity, such as an object with a smooth metal surface. First, in Figure 4A, when the control device 30 controls all the light-emitting elements 26 in the light source device 20 to turn on, At this time, the brightness projected by the light source device 20 is too large. As shown in Figure 4B, the recess of the object 40 will still reflect high-brightness light, which will eventually result in the recession presented by the detection image being inconspicuous. Therefore, the detection image Either the automatic judgment by the control device 30 or the manual judgment will cause errors.

In this regard, when the test object 40 is an object with a highly reflective surface, please refer to Figure 5A. The control device 30 of the detection system 1 of the present invention can control the plurality of rows of light-emitting elements 26 on the substrate 24 of the light source device 20 to emit light at intervals. , In order to reduce the brightness of the light source, the detected image taken at this time is shown in Figure 5B. The light projected on the depression of the object 40 presents a clear stripe shape, thereby effectively improving the accuracy of the surface shape of the object 40 degree.

In addition to the above-mentioned embodiments, the present invention further provides a second embodiment. Please refer to FIG. 6 and FIG. 7. The detection system 2 of this embodiment includes a detection device 50, a light source device 20, and a control device 30. The detection device 50 is a device for capturing images of the object under test, and the captured images can be provided to the control device 30 to detect the object under test 40. The light source device 20 is surrounded by a detection device 50 to provide surrounding equidistant light sources. The preferred light source device 20 may be a semicircular light source device, thereby illuminating the object under test in the detection device 10 without blind spots. Among them, the structure and connection relationship of the light source device 20 and the control device 30, and the effects produced by the light source device 20 are the same as those of the above-mentioned embodiment, and will not be repeated here.

The difference between this embodiment and the previous embodiment is that, as shown in the sixth and seventh figures, the structure of the detection device 50 further includes a fixed frame 52 for setting the object under test 40, and the mobile device 54 can be a mechanical arm electric The control device 30 is sexually connected, and a photographing device 56 is clamped. The lens side of the photographing device 56 is provided with an illuminating device 562 which is electrically connected to and receives the control of the control device 30 to provide a light source. Through the control of the control device 30, the mobile device 54 operates the photographing device 56 to shoot at least one detected image along the edge of the object 40. The photographing device 56 is also electrically connected and controlled by the control device 30, so the photographing device 56 can be tested The object 40 shoots multiple inspection images with different viewing angles, and transmits the inspection images to the control device 30, so that the control device 30 automatically determines whether the object 40 in the inspection image is defective, whether it meets the product factory standard, or the inspection image Provided to managers, allowing managers to make manual judgments.

In summary, the present invention can surround the object to be tested with a light source to provide a omni-directional light source, and the light source can be presented in a striped manner, which can avoid excessive reflection of light, improve the detection accuracy, and the detection device is more effective. Detect various angles of the object to be tested to avoid blind spots in the test.

Only the above are only preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes or modifications made in accordance with the characteristics and spirit of the application scope of the present invention shall be included in the patent application scope of the present invention.

1: Detection system 10: Detection device 12: mobile device 122: Projector 14: Photography installation 142: Lighting Device 20: Light source device 21: Frame 22: Lamp holder 24: substrate 26: Light-emitting element 28: diffuser 29: Side light source device 30: control device 40: DUT 2: Detection system 50: detection device 52: fixed frame 54: mobile device 56: Photography installation 562: Lighting Device

The first figure is a three-dimensional view of the present invention. The second figure is a block diagram of the system of the present invention. The third figure is a perspective view of the light source device of the present invention. Fig. 4A is a schematic diagram of all the light-emitting elements of the light source device of the present invention. The fourth figure B is a schematic diagram of the detection image of all the light-emitting elements of the light source device of the present invention illuminating the object under test. Fig. 5A is a schematic diagram showing the light emission of the light-emitting elements of the light source device of the present invention. Fig. 5B is a schematic diagram of the detection image of the light-emitting element of the light source device of the present invention illuminating the object under test. The sixth figure is a perspective view of another embodiment of the present invention. The seventh figure is a system block diagram of another embodiment of the present invention.

1: Detection system

10: Detection device

12: mobile device

122: Projector

14: Photography installation

142: Lighting Device

20: Light source device

21: Frame

22: Lamp holder

28: diffuser

29: Side light source device

40: DUT

Claims (12)

A detection system includes: A detection device; A light source device surrounding the detection device to illuminate the detection device, and the light source device includes: A lamp holder in which at least one substrate is arranged, and a plurality of rows of light-emitting elements are arranged on the substrate; and A diffuser plate arranged on the lamp holder to cover the substrate and the light-emitting elements; and A control device is connected to the detection device and the substrate to control the detection device and all the light-emitting elements to emit light, or the control device can control the rows of light-emitting elements to emit light at intervals, so that the light source emitted by the light-emitting elements is striped light source. The detection system according to claim 1, wherein the light source device is a semicircular light source device to surround the detection device. The detection system according to claim 1, wherein the light-emitting elements are light-emitting diodes. The detection system according to claim 1, further comprising a light source device on one side, which is arranged at the other end of the light source device opposite to the other end of the light source device, and is connected to the control device to receive the control light emission of the control device. The inspection system according to claim 1, wherein the substrate is a circuit board. The detection system according to claim 1, wherein the detection device further includes: A moving device connected to the control device, the moving device can hold an object under test, and rotate the object under test according to the control of the control device; and A photographing device is connected to the control device, receives at least one detection image of the object under test from different angles controlled by the control device, and transmits the detection image to the control device. The detection system according to claim 6, wherein an illumination device is further provided on the lens side of the photographing device, connected to the control device, and controlled by the control device to provide a light source. The detection system according to claim 6, wherein the mobile device is a robotic arm. The detection system according to claim 6, wherein the mobile device is further provided with a light projector, which is electrically connected to the control device, and the light projector can be aimed at the object to be tested for illumination. The detection system according to claim 1, wherein the detection device further includes: A fixed frame for setting an object to be tested; A photographing device connected to the control device to photograph the object to be tested to generate at least one detection image, and transmit the detection image to the control device; and A moving device is connected to the control device. The moving device can clamp the photographing device. The moving device moves the photographing device along the edge of the object to be measured according to the control of the control device to shoot the detection image. The detection system according to claim 10, wherein a lighting device is further provided on the lens side of the photographing device, which is connected to the control device, and receives the control of the control device to provide a light source. The detection system according to claim 10, wherein the mobile device is a robotic arm.

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