CN117451629A - Editable multi-angle light source equipment for bipolar ear detection - Google Patents

Abstract

The invention relates to machine vision technology and discloses an editable multi-angle light source device for bipolar ear detection, which includes: a three-dimensional light source module, including two symmetrical three-dimensional light source components, each of the three-dimensional light source components including U A preset number of light-emitting channels arranged in a ring; a control module used to control the light-emitting channels of the light-emitting channels, select the number of light-emitting channels of the light-emitting channels, and adjust the light-emitting parameters of the light-emitting channels. In the embodiment of the present invention, the luminescence parameters of each luminous channel can be edited according to the object to be detected, so as to realize multi-angle lighting of different objects to be detected. Two three-dimensional light source components can be used to detect both ends of the object to be detected at the same time, without the need for future detection. By moving the object to be detected or the light source, the three-dimensional light source component adopts a U-shaped ring arranged light channel, which can match more lens sizes and improve efficiency.

Description

An editable multi-angle light source device for bipolar ear detection

Technical field

The present invention relates to the field of machine vision lighting technology, and in particular to an editable multi-angle light source device for bipolar ear detection.

Background technique

The types of defects that appear in the tab area of lithium batteries are complex and diverse, and their locations are random. Moreover, some subtle defects are only slightly different from the background color of the tab, making it difficult to accurately extract defect features, and visual inspection has become one of the difficulties in the industry.

The OPT machine vision light source relies on the two major technology platforms of optical imaging and visual analysis to improve the quality and speed of image acquisition from the hardware source, and combines it with self-developed AI algorithms to accurately classify and judge subtle or complex defects in the ear, covering extremely It handles multiple processes such as lug cutting, winding, and welding to comprehensively solve the problem of lug defect detection.

When using traditional visual light sources to detect lithium battery tabs, the light source needs to be customized as the needs of the inspection project change or the size of the lens. There is no universal light source solution. In addition, the lithium battery or light source needs to be moved back and forth to achieve dual inspection. Illumination of the pole lug, therefore, detection efficiency is lower.

Contents of the invention

The present invention provides an editable multi-angle light source device for bipolar tab detection. Its main purpose is to solve the problem of low detection efficiency of traditional visual light sources when detecting tabs of lithium batteries.

In order to achieve the above object, the present invention provides an editable multi-angle light source device for bipolar ear detection. The editable multi-angle light source device includes: a three-dimensional light source module, including two symmetrical three-dimensional light source components, each Each of the three-dimensional light source components includes a U-shaped arrangement of a preset number of light-emitting channels, and the preset number of light-emitting channels are attached to the inner wall of the three-dimensional light source component;

A control module, including a control circuit and control software, wherein the control circuit is used to control the light emitting channel, and the control software is used to select the number of light emitting channels of the light emitting channel according to the object to be detected and adjust the intensity of the light emitting channel. Luminescence parameters.

Optionally, each of the three-dimensional light source components includes 42 light-emitting channels.

Optionally, any of the light-emitting channels includes: a red light-emitting unit, a green light-emitting unit, a blue light-emitting unit, a (CIE)A light-emitting unit, a (CIE)D50 light-emitting unit and a (CIE)D65 light-emitting unit.

Optionally, the control software adjusts the flashing frequency of any light-emitting unit of the light-emitting channel according to the preset camera shooting frequency.

Optionally, the luminescence parameters of the luminescence channel include: luminescence brightness and luminescence color temperature.

Optionally, selecting the number of light-emitting channels of the light-emitting channel and adjusting the light-emitting parameters of the light-emitting channel according to the object to be detected includes:

Select the number of light-emitting channels of the light-emitting channel according to the position of the object to be detected;

Get the exposure parameters of the preset camera;

The luminous brightness and luminescent color temperature of the luminescent channel are adjusted according to the exposure parameters and the defect type of the object to be detected.

Optionally, the control module further includes: a storage unit for storing the number of light-emitting channels and light-emitting parameters of the light-emitting channel and the label corresponding to the object to be detected.

Optionally, the angle between the light-emitting channel and the horizontal plane ranges from 4.5° to 60°.

Optionally, the control circuit includes: RS232 communication interface circuit, MCU microcontroller, PWM modulation circuit and MOS tube switch circuit.

Optionally, the light-emitting channel uses an aluminum substrate as a carrier.

In the editable multi-angle light source device for bipolar ear detection provided by the present invention, the luminescence parameters of each luminous channel can be edited according to the object to be detected, so as to realize multi-angle lighting of different objects to be detected, using two three-dimensional The light source component can detect both ends of the object to be detected at the same time, without the need to move the object to be detected or the light source back and forth. The three-dimensional light source component uses a U-shaped hole, which can match more lens sizes and improve efficiency.

Description of the drawings

Figure 1 is a schematic framework diagram of an editable multi-angle light source device for bipolar ear detection provided by an embodiment of the present invention;

Figure 2 is a schematic structural diagram of an editable multi-angle light source device for bipolar ear detection provided by an embodiment of the present invention;

Figure 3 is a schematic diagram of the arrangement of light-emitting channels of an editable multi-angle light source device for bipolar ear detection provided by an embodiment of the present invention;

Figures 4 to 7 are respectively schematic diagrams of lighting different channels of an editable multi-angle light source device for bipolar ear detection provided by an embodiment of the present invention.

Figure 8 is a schematic cross-sectional view of a light-emitting channel according to an embodiment of the present invention.

The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

The editable multi-angle light source device for bipolar ear detection of the present invention will be described below in conjunction with Figures 1-8. Referring to FIG. 1 , a schematic framework diagram of an editable multi-angle light source device for bipolar ear detection is provided according to an embodiment of the present invention. In this embodiment, the editable multi-angle light source device includes: a three-dimensional light source module 10 and a control module 11 .

The three-dimensional light source module 10 includes two symmetrical three-dimensional light source components to perform three-dimensional lighting on both ends of the object to be detected, such as the bipolar ears of a lithium battery, to achieve simultaneous detection of both ends of the object to be detected, instantly. Identifying two mark positions eliminates the need to move the detected object or light source back and forth, improving efficiency. In addition, as shown in FIG. 2 , in the embodiment of the present invention, each of the three-dimensional light source components includes a preset number of light-emitting channels arranged in a U-shaped ring, and the preset number of light-emitting channels are fitted to the three-dimensional light source. The inner wall of the U-shaped light source structure of the component. Wherein, the light emitting channel may be an LED light. Compared with the traditional circular light source structure, the U-shaped light source structure has larger holes, which can match more lens sizes.

Preferably, as shown in FIG. 3 , in the embodiment of the present invention, each of the three-dimensional light source components includes 42 luminous channels arranged in a U-shaped ring. Therefore, the three-dimensional light source module 10 can achieve 84 individually controlled channels. Lighting channel allows you to edit more lighting methods and is suitable for more application scenarios. The light-emitting channels are evenly or unevenly distributed according to the needs and are attached to the inner wall of the U-shaped light source structure. The light-emitting parameters of each of the light-emitting channels can be edited according to specific needs, and can be based on different light-emitting parameters and light-emitting at different positions. Channel luminescence detects defects of different types and positions of objects to be inspected, and the height between the U-shaped light source structure and the illuminated surface of the object to be inspected is adjustable, enabling multi-angle lighting of the illuminated object.

Furthermore, in the embodiment of the present invention, an aluminum substrate with high thermal conductivity is used as the carrier of the light-emitting channel, which can improve the welding strength. At the same time, the use of high thermal conductivity system heat dissipation glue is beneficial to the heat dissipation of the light-emitting channel, generating less heat and consuming It uses less electric power and has good high-temperature resistance. At the same time, the reasonable arrangement of LEDs in annular and equal proportions and the selection of the light-emitting angle of the light-emitting channel can very well improve the uniformity of the light.

The control module 11 includes a control circuit and control software, wherein the control circuit is used to control the lighting of the lighting channel, and the control software is used to select the number of lighting channels of the lighting channel and adjust the lighting according to the object to be detected. The luminescence parameters of the channel.

In the embodiment of the present invention, the control module 11 selects the number of light-emitting channels and adjusts the light-emitting parameters of the light-emitting channel according to the object to be detected, and the control circuit controls the light-emitting channel according to the number of light-emitting channels and the light-emitting parameters. The glow channel glows. The control circuit can independently control the luminescence parameters of any one or more luminous channels in the three-dimensional light source module, can arbitrarily combine the luminous channels according to the number of luminous channels, and is widely adapted to different visual inspection systems for detecting different defect types and different types of various inspection objects. Defect position, no need to replace the light source.

In the embodiment of the present invention, the control module 11 can use a high-frequency and high-memory chip, which has fast running speed and high stability. The control module 11 can be connected to the PC through a serial port. Open the corresponding host computer software on the PC, select the corresponding port, baud rate, and click on the software interface to set the number and brightness of the corresponding lighting channels. The host computer software will generate different outputs based on the configured number of lighting channels, brightness, etc. Light combination, parsing the data according to the communication protocol to generate corresponding control instructions, and sending them to the editable multi-angle light source device for bipolar ear detection through the serial port to control the editable multi-angle light source device to switch light source channels and control the light source Brightness, more convenient to integrate the light source into the bipolar ear area of the lithium battery.

In one embodiment of the present invention, the image to be detected under the current lighting parameters can be displayed in real time in the corresponding host computer software on the PC, so as to facilitate timely adjustment of the lighting parameters and the number of light emitting channels.

In one embodiment of the present invention, the three-dimensional light source module interacts with the control software in real time to implement mode setting, number of lighting channels, lighting parameter settings, and saving of defect pictures of objects to be detected. Through the real-time interaction between the control software and the host computer software and the defect identification algorithm of deep learning, different types of defect detection can be realized.

In a preferred embodiment, any one of the light-emitting channels includes: a red light-emitting unit, a green light-emitting unit, a blue light-emitting unit, a (CIE)A light-emitting unit, a (CIE)D50 light-emitting unit and a (CIE)D65 light-emitting unit. Light emitting unit.

Furthermore, the control software adjusts the flashing frequency of any light-emitting unit of the light-emitting channel according to the preset camera shooting frequency, which can not only save energy but also extend the service life of the light-emitting unit. For example, the control software can adjust the flicker of any one of the red light emitting unit, the green light emitting unit, the blue light emitting unit, the (CIE)A light emitting unit, the (CI E)D50 light emitting unit and the (CI E)D65 light. frequency.

In a preferred embodiment, the luminescence parameters of the luminescence channel include: luminescence brightness and luminescence color temperature.

The control software uses the following method to adjust the luminescence parameters of the luminescence channel:

Select the number of light-emitting channels of the light-emitting channel according to the position of the object to be detected;

Get the exposure parameters of the preset camera;

The luminous brightness and luminescent color temperature of the luminescent channel are adjusted according to the exposure parameters and the defect type of the object to be detected.

In the embodiment of the present invention, the luminous brightness, luminous color temperature and flicker frequency of the three-dimensional light source module 10 are adjusted according to the exposure parameters and flicker frequency of the preset camera, so that the preset camera can take clear pictures of the object to be detected.

As shown in the black area of Figure 4, in one embodiment of the present invention, the control module 11 controls the red light-emitting units of the 17th, 18th, 19th, 20th, 21st, 22nd, 23rd, and 24th light-emitting channels to light up. Appears as a ring light effect.

As shown in the black area of Figure 5, in another embodiment of the present invention, the control module 11 controls the 17th, 18th, 19th, 20th, 21st, 22th, 23rd, 24th, 25th, 26th, 27th, 30th, 31st, The (CI E) D50 light-emitting units of 32, 33, 34, 35, 38, 39, 40, 41, 42, 43, 46, 47, and 48 light-emitting channels are lit, presenting a dome light source effect.

As shown in the black area in Figure 6, in another embodiment of the present invention, the control module 11 controls the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, The blue light-emitting units of the 14th, 15th, and 16th light-emitting channels light up, presenting a four-sided light source effect.

As shown in the black area of Figure 7, in another embodiment of the present invention, the control module 11 controls the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 30, 31, 32, 33, 34, 35, 38, 39, 40, 41, 42, The blue light-emitting units of the 43, 46, 47, and 48 light-emitting channels are lit, presenting a combination effect of four-sided light sources and dome light sources.

Further, FIG. 8 illustrates a schematic cross-sectional view of the light-emitting channel according to the embodiment of the present invention. The angle range between each light-emitting channel and the horizontal plane is 4.5° to 60°.

Further, the control module further includes a storage unit for storing the number of light-emitting channels and light-emitting parameters of the light-emitting channel and the label corresponding to the object to be detected.

Specifically, when the number of light-emitting channels and the light-emitting parameters of the light-emitting channel meet the detection requirements, the number of light-emitting channels and the light-emitting parameters of the light-emitting channel and the label corresponding to the object to be detected are stored in the storage unit. In subsequent detection, the number of light-emitting channels and light-emitting parameters of the light-emitting channel can be automatically called to detect the object to be detected.

In a preferred embodiment, the control circuit includes: RS232 communication interface circuit, MCU microcontroller, PWM modulation circuit and MOS tube switching circuit. The control circuit may also include a power conversion circuit to convert 220V commercial power into a voltage corresponding to the MCU microcontroller.

In one embodiment of the present invention, the number of lighting channels and lighting parameters set by the control software are sent to the MCU microcontroller through the RS232 communication interface circuit, and the MCU microcontroller analyzes the number of lighting channels and the lighting parameters, and controls the PWM modulation circuit to generate a PWM value according to the analysis results, and inputs the PWM value into the MOS tube switch circuit to control the three-dimensional light source module to emit light.

In the editable multi-angle light source device for bipolar ear detection provided by the present invention, the luminescence parameters of each luminous channel can be edited according to the object to be detected, so as to realize multi-angle lighting of different objects to be detected, using two three-dimensional The light source component can detect both ends of the object to be detected at the same time, without the need to move the object to be detected or the light source back and forth. The three-dimensional light source component uses a U-shaped hole, which can match more lens sizes and improve efficiency.

The device embodiments described above are only illustrative. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in One location, or it can be distributed across multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Persons of ordinary skill in the art can understand and implement the method without any creative effort.

Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the part of the above technical solutions that essentially contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disc, optical disk, etc., including a number of instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in various embodiments or certain parts of the embodiments.

Furthermore, it is clear that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Multiple units or devices stated in the system claims may also be implemented by one unit or device by software or hardware. The words first, second, etc. are used to indicate names and do not indicate any specific order.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified. Modifications or equivalent substitutions may be made without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. An editable multi-angle light source device for bipolar ear detection, the editable multi-angle light source device comprising:

the three-dimensional light source module comprises two three-dimensional light source assemblies which are bilaterally symmetrical, each three-dimensional light source assembly comprises a preset number of light-emitting channels which are distributed in a U-shaped ring, and the preset number of light-emitting channels are attached to the inner wall of a U-shaped light source structure of the three-dimensional light source assembly;

the control module comprises a control circuit and control software, wherein the control circuit is used for controlling the luminous channels to emit light, and the control software is used for selecting the luminous paths of the luminous channels and adjusting the luminous parameters of the luminous channels according to the object to be detected.

2. The editable multi-angle light source device of claim 1, wherein each of the stereoscopic light source assemblies includes 42 light emitting channels.

3. The editable multi-angle light source apparatus according to claim 2, wherein any one of the light emitting channels includes: red light emitting unit, green light emitting unit, blue light emitting unit, (CIE) a light emitting unit, (CIE) D50 light emitting unit, and (CIE) D65 light emitting unit.

4. The editable multi-angle light source apparatus according to claim 3, wherein the control software adjusts a flicker frequency of any one of the light emitting units of the light emitting channel according to a photographing frequency of a preset camera.

5. The editable multi-angle light source device according to claim 1, wherein the light emitting parameters of the light emitting channel include: luminance and color temperature of light emission.

6. The editable multi-angle light source apparatus according to claim 5, wherein the selecting the number of light emitting paths of the light emitting channel and adjusting the light emitting parameters of the light emitting channel according to the object to be detected includes:

selecting the number of light-emitting paths of the light-emitting channel according to the position of the object to be detected;

acquiring exposure parameters of a preset camera;

and adjusting the luminous brightness and the luminous color temperature of the luminous channel according to the exposure parameters and the defect type of the object to be detected.

7. The editable multi-angle light source device of claim 1, wherein the control module further comprises:

and the storage unit is used for storing the number of the luminous paths of the luminous channel, the luminous parameters and the labels of the corresponding objects to be detected.

8. The editable multi-angle light source device according to claim 1, wherein the angle of the light emitting channel with respect to the horizontal plane is in the range of 4.5 ° to 60 °.

9. The editable multi-angle light source device according to claim 1, wherein the control circuit includes: RS232 communication interface circuit, MCU microcontroller, PWM modulation circuit and MOS pipe switch circuit.

10. The editable multi-angle light source apparatus according to claim 1, wherein the light emitting channel uses an aluminum substrate as a carrier.